CN1871078A - Work carrying device of pressing machine - Google Patents

Abstract

This invention provides a workpiece conveying device for a pressure machine. The continuous automatic feeder (41) includes a lifting and clamping device (80) for moving a bar (14) in a lifting direction and a clamping direction, a plurality of feed carriers (52) provided on the bar (14), and a feed linear motor (53) for driving the feed carriers (52) in the feeding direction. Since the feed carriers (52) are provided on the bar (14), the object driven by the feed linear motor (53) can be made smaller, so a small-capacity motor can be used as the feed linear motor (53), thereby simplifying the structure of the continuous automatic press (1).

Description

Workpiece transfer device for press machines

technical field

The invention relates to a work conveying device of a press machine.

Background technique

27 shows a continuous automatic press 100 as a conventional press, four columnar support columns 121 are erected on a machine tool 123 located at the bottom of the press frame 110, and a beam 120 is provided on the support column 121. A slider driving device is built in the beam 120 to drive the slider 122 below the beam 120 up and down. In addition, an upper die 112 is attached below the slider 122 . A lower mold 113 is arranged on the upper surface of the movable workbench 130 facing the slider 122 , and the workpiece is punched and formed by the cooperation of the upper mold 112 and the lower mold 113 . A pair of left and right transfer rods 114 and 114 extend in parallel with the upper mold 112 and the lower mold 113 interposed therebetween. On a pair of transfer rods 114, 114, there are facingly provided with finger holders (fingers) for holding workpieces not shown in the figure. The reciprocating movement sequentially transfers the workpiece from the lower mold 113 on the upstream side (left side in FIG. 27 ) to the lower mold 113 on the downstream side (right side in FIG. 27 ). Also, the feeding direction is parallel to the workpiece conveying direction, and movement in the feeding direction includes forward (movement from upstream to downstream) and return (movement from downstream to upstream). In addition, the so-called ascending direction is an up-down direction, and the movement in this ascending direction includes ascending (movement from bottom to top) and descent (movement from top to bottom). In addition, the so-called clamping direction is a direction (direction perpendicular to the paper surface of FIG. 27 ) horizontally perpendicular to the feed direction, and there is clamping (the distance between the transfer rods 114 is narrowed) in the movement in the clamping direction. movement) and release (movement to expand the space between the transfer rods 114).

In addition, for example, in the case of a three-dimensional continuous automatic feeder, the transfer bar 114 sequentially transfers the workpiece to the lower die 113 on the downstream side by repeatedly clamping, raising, advancing, lowering, releasing, and returning.

A feed drive unit 115 that moves the transfer rod 114 in the feed direction is fixed to the upstream side or the downstream side of the press frame 110 . The clamp drive unit 116 for moving the transfer rod 114 in the clamping direction and the lift drive unit 117 for moving the transfer rod 114 in the lift direction are provided between the two support columns 121 on the upstream side and the downstream side respectively, And it is installed on the machine tool 123 .

In these feeding driving part 115, clamping driving part 116 and lifting driving part 117, the rotary power taken out from the pressure gauge main body is used to rotate the feeding cam, clamping cam and lifting cam respectively, and the feeding cam is moved by these cams. The rod 114 is driven in the three-dimensional directions of the feeding direction, the clamping direction and the lifting direction.

However, in recent years, in such a device driven by a cam in the feeding direction, the clamping direction, and the raising direction, in the case of changing the operation mode of the transfer rod 114, a plurality of rods are required corresponding to the operation mode. Cams, therefore, the drive mechanism becomes complicated and expensive, and the changeable action modes are limited by the number of cams. Therefore, it is desired that various operation modes can be easily obtained and the drive mechanism can be simplified.

Therefore, a workpiece transfer device has been proposed in which the feeding drive unit 115, the clamping drive unit 116, and the lifting drive unit 117 are driven by servo motors, respectively, and the servo motors are controlled.

The feed drive unit 115 , the clamp drive unit 116 , and the lift drive unit 117 driven by the servo motor are configured as follows. The feed drive unit 115 is provided with a ball screw mechanism using a first servo motor as a drive source to reciprocate the transfer rod 114 in the feed direction. A ball screw mechanism with a second servo motor as a driving source is provided in the clamping driving part 116 to reciprocate the transfer rod 114 in the clamping direction, and a third servo motor is provided in the lifting driving part 117 as a driving source. The rack and pinion mechanism makes the transfer rod 114 move back and forth along the rising direction.

In addition, as disclosed in Patent Document 1, there is also an example in which all of the feeding operation, clamping operation, and raising operation of the feeding rod are performed by using a linear motor. In this workpiece transfer device, the feed rod is suspended on a bracket fixed to the main body of the press. A linear motor is provided between the support and the feed rod, and the feed rod moves in the feed direction relative to the support along the feed direction. In addition, the clamping action and the lifting action are separately driven by a linear motor provided on the lower side of the feed rod.

In addition, as shown in Patent Document 2, there is a device in which a first support is provided on a fixed rod so as to be raised by a linear motor, and the lifting operation is performed on the first support by a linear motor. A second frame is provided for the clamping operation, and a third frame provided with a workpiece holding tool is provided on the second frame so that the feeding operation is performed by a linear motor.

In addition, as shown in Patent Document 3, there is a device that includes a pair of lifting beams that are vertically movable in parallel with the workpiece conveyance direction, and that each lifting beam can be moved along the long sides of the lifting beams by a linear motor. The carrier arranged to move in the direction, the sub-carrier arranged to move in the moving direction of the carrier along the guide rails provided on the carrier by a linear motor, and the horizontal frame are arranged between a pair of sub-carriers facing each other. The horizontal bar of the workpiece holding mechanism. In this workpiece transfer device, the lifting operation is performed by moving the lifting beam with a servo motor. In addition, the feeding operation is performed by moving the carrier and the sub-carriers in the feeding direction using a linear motor. By using the carrier and sub-carriers, the movable range in the feeding direction can be widened.

Patent Document 1: Japanese Unexamined Patent Publication No. 10-314871 (page 4, FIG. 5 )

Patent Document 2: Japanese Unexamined Patent Publication No. 11-104759 (pages 2 to 3, FIGS. 3 and 4 )

Patent Document 3: Japanese Unexamined Patent Publication No. 2003-205330 (page 5, FIG. 5 )

However, in the conventional continuous automatic press shown in Figure 27, since the feed box with the built-in feed drive unit 115 is located on the side of the press main body, in addition, a built-in lift is provided between the left and right support columns 121. Since the raised case of the high drive part 117 or the clamp case in which the clamp drive part 116 is built-in, the structure of a drive mechanism becomes complicated, and it becomes a factor which raises manufacturing cost.

In addition, since the feed box in which the feed drive unit 115 is built protrudes greatly outward from the side of the press main body, there is a problem that it will interfere with the installation of the material supply device or the workpiece unloading device, and As a press line, a wide installation space is required.

In addition, in the scheme shown in Patent Document 1, since the entire feed rod is driven in the feed direction, the total driving weight becomes large. Therefore, in order to keep up with the production speed of the press, a drive source with a large capacity is required, and the manufacturing cost increases.

In addition, in the solution shown in Patent Document 2, since the third frame is provided on the second frame in such a manner that the feeding operation is performed by a linear motor, it is necessary to increase the length of the second frame in the feeding direction in order to ensure the feeding distance. As a result, the second bracket becomes significantly heavier, and the second bracket must be clamped with respect to the first bracket. In addition, it is also necessary to raise the first bracket holding the second bracket with respect to the fixing bar. Therefore, since the driving mechanism for the clamping action and the lifting action is heavy, a linear motor with a large capacity is required, which still increases the manufacturing cost.

In addition, although the solution shown in Patent Document 3 can expand the movable range in the feeding direction, it requires a carrier movable by a linear motor and a sub-carrier movable by a linear motor. Accordingly, the number of linear motors for feeding the workpiece increases, the structure becomes complicated, and the manufacturing cost increases.

As described above, even if a servo motor or other countermeasures are used, the effect of simplification of the structure is not sufficient, and therefore further simplification of the structure and cost reduction are strongly demanded.

Contents of the invention

The present invention has been made with the above problems in mind, and an object of the present invention is to provide a workpiece transfer device for a press machine capable of simplifying the structure.

In order to achieve the above object, the first invention of the present invention is a workpiece conveying device for a press machine, characterized by comprising: frames arranged on both sides of the movable table in the workpiece conveying direction, and frames arranged parallel to the workpiece conveying direction. A pair of rods, a feeding carrier supported by the rods, a feeding drive mechanism that is arranged on the rods and drives the feeding carrier along the workpiece conveying direction, is arranged on the frame and drives the pair of rods along the lifting direction so that The lifting driving mechanism that moves up and down, the clamping driving mechanism that is set on the frame and drives a pair of rods in the clamping direction orthogonal to the workpiece conveying direction, is freely detachable on the feeding carrier and holds the workpiece workpiece holding tool.

A second invention is characterized in that the feed driving mechanism includes a linear motor in the work conveying device for a press machine according to the first invention.

A third invention is characterized in that the feed driving mechanism includes a servo motor in the workpiece conveying device for a press machine according to the first invention.

According to a fourth invention, in any one of the first invention to the third invention, the work conveying device of the press machine is characterized in that, on the feed carrier, a plurality of work holding tools of the process amount are detachably provided. .

According to a fifth invention, in any one of the first invention to the fourth invention, the work conveying device of the press machine is characterized in that the pair of rods are equipped with fixed rods supported by a lifting drive mechanism or a clamping drive mechanism, and can be moved from Remove the moving rod from the fixed rod.

The sixth invention is a workpiece conveying device of a press machine, characterized by comprising: a pair of rods supported by frames arranged on both sides of the movable table in the workpiece conveying direction and arranged parallel to the workpiece conveying direction; The feeding carrier, the feeding driving mechanism that is arranged on the bar and drives the feeding carrier along the workpiece conveying direction, the base supported by the feeding carrier, is arranged on the feeding carrier and lifts the base along the A lift drive mechanism that moves up and down by driving in the high direction, and a workpiece holding tool that is detachably installed on the base and holds the workpiece.

The seventh invention is characterized in that the workpiece conveying device of the press machine according to the sixth invention is provided with a clamping drive provided on the feed carrier and driving the base in a clamping direction perpendicular to the conveying direction of the workpiece. mechanism.

The eighth invention is characterized in that at least one of the feed drive mechanism and the lift drive mechanism is provided with a linear motor in the press machine work conveying device according to the sixth invention or the seventh invention.

A ninth invention is characterized in that the clamp drive mechanism includes a linear motor in the press machine work conveying device according to the seventh invention.

According to a tenth invention, in the work conveying device for a press machine according to the sixth invention or the seventh invention, at least one of the feed drive mechanism and the lift drive mechanism is provided with a servo motor.

According to an eleventh invention, in the work conveying device for a press machine according to the seventh invention, the clamp driving mechanism is characterized in that the clamp driving mechanism includes a servo motor.

According to a twelfth invention, in any one of the sixth invention to the eleventh invention, the work conveying device for a press machine is characterized in that a plurality of work holding tools for a process amount are detachably provided on the base.

According to a thirteenth invention, in any one of the workpiece conveying device of the press machine of the sixth invention to the twelfth invention, a rod gap adjusting device for adjusting a gap between a pair of rods is provided.

The fourteenth invention is the work conveying device of the press machine in any one of the sixth invention to the thirteenth invention, characterized in that the pair of rods are configured to be detachable from the frame.

The 15th invention is characterized in that, in any one of the first invention to the 14th invention, the work conveying device of the press machine is characterized in that, on the bar, a plurality of feed carriers are supported, and each feed carrier can be independently ground movement control ground composition.

The sixteenth invention is characterized in that in any one of the first invention to the fourteenth invention, the work conveying device of the press machine is characterized in that a plurality of feed carriers are supported on the rod, and adjacent feed carriers are Link with link mechanism.

According to the first invention, the pair of rods are respectively driven in the raising direction and the clamping direction by the raising driving mechanism and the clamping driving mechanism. Additionally, the feed carrier supported by the rod is driven on the rod in the feed direction by the feed drive mechanism. Using these operations, the workpiece transfer device of the press machine can three-dimensionally move the workpiece holding tool. The movement of the workpiece holding tool in the feed direction requiring a long stroke is performed by a feed drive mechanism provided directly on the rod.

Thus, in the present invention, since the feed drive mechanism requiring a long stroke is provided on the rod, the feed drive mechanism requiring a long stroke can be compactly installed in the press main body.

In this way, since there is no feeding device (feed box) protrudingly provided downstream (or upstream) of the press main body in order to move the rod itself in the feeding direction in the past, the entire press machine can be miniaturized. In addition, since the feed drive mechanism only needs to ensure the driving force necessary to drive the feed carrier, a mechanism with a small capacity can be used as the feed drive mechanism. In this way, the structure of the workpiece conveying device can be simplified.

Here, the feeding direction refers to a direction parallel to the workpiece conveyance direction. In addition, the so-called rising direction refers to the direction perpendicular to the surface including the pair of rods. In addition, the clamping direction refers to a direction horizontally perpendicular to the workpiece conveyance direction, and is a direction in which a pair of rods approach or separate from each other.

In addition, as the case where the feed drive mechanism is arranged on the rod, it may be directly arranged by attaching the feed drive mechanism to the rod, or indirectly arranged via a member attached to the rod. .

According to the second invention, since the feed driving mechanism is equipped with a linear motor, non-contact movement can be realized, and since there is no rotating part, the durability of the workpiece conveying device is improved, and the noise during driving is reduced. In addition, since a linear motor is used, the installation space of the feeding drive mechanism is small, and high-speed conveyance and high-precision positioning can be realized. In addition, since the linear motor has no rotating parts and the number of parts is small, the weight and size of the feed drive mechanism can be reduced.

According to the third invention, since the feed drive mechanism is equipped with a servo motor, the cost of the feed drive mechanism is reduced, and a normal mechanism such as a ball screw mechanism or a mechanism using a rack and a pinion can be used for the power transmission mechanism, and the workpiece is conveyed. The maintenance and adjustment of the device and pressure machinery are easier.

According to the 4th invention, since the workpiece holding tools of a plurality of processes are provided on one feed carrier, for example, in a continuous automatic press having a plurality of processing steps, the number of feed carriers can be reduced, Cost reduction can thus be promoted. In addition, this further simplifies the structure and control.

According to the fifth invention, since the rod includes the fixed rod and the movable rod, the movable rod can be detached from the frame. In this way, since the moving rod can be removed and moved to the outside of the workpiece transfer area when the mold is replaced, the replacement of the workpiece holding tool becomes easier, and the mold replacement operation becomes easier.

According to the sixth invention, the feed carrier is driven by the feed drive mechanism, and moves in the workpiece transfer direction with respect to the pair of rods. In addition, the base is driven by the lifting drive mechanism to move in the lifting direction relative to the feed carrier. Utilizing these moving actions, the workpiece conveying device can realize at least two-dimensional movement in the workpiece conveying direction and the lifting direction.

Since the feed carrier moves in the workpiece conveyance direction with respect to the bar, the movable range of the feed carrier in the workpiece conveyance direction becomes wider. In addition, since the moving distance in the raising direction is generally smaller than the moving distance in the workpiece conveying direction, the length of the feeding carrier in the raising direction becomes smaller. In this way, the feed carrier frame is made small and light, and a mechanism with a small capacity can be used as the feed drive mechanism and the lifting drive mechanism, and these feed drive mechanisms and the lift drive mechanism can be arranged on the rod and the feed mechanism. on the carrier.

Therefore, since the feed box with the feed drive unit built in is unnecessary unlike conventional ones, the feed box does not protrude from the press main body, and the entire press machine becomes compact. In addition, since the feed box does not protrude, it is also possible to arrange a workpiece unloading device near the press machine. In addition, there is no need for a lift box with a built-in lift drive unit, which is conventionally installed between the support columns together with the feed box, and the structure of the workpiece transfer device is simplified.

Here, the rising direction refers to the direction perpendicular to the surface including the pair of rods.

In addition, as the case where the feed drive mechanism is arranged on the rod, it may be directly arranged by attaching the feed drive mechanism to the rod, or indirectly arranged via a member attached to the rod. .

In addition, as the case where the lifting drive mechanism is arranged on the carrier, whether it is the case where the lifting drive mechanism is installed on the feed carrier or the like is directly arranged, or is arranged by means of a member installed on the feed carrier, etc. Any case of indirect configuration is possible.

According to the seventh invention, since the clamp driving mechanism for driving the base is provided, the base can move in the clamping direction. Therefore, the workpiece conveying device, together with the feed drive mechanism and the lift drive mechanism, can realize three-dimensional movement in the feed direction, lift direction, and clamping direction. In this way, it is possible to cope with more kinds of press processes, and the versatility is improved.

Here, the clamping direction refers to a direction horizontally perpendicular to the workpiece conveyance direction, and is a direction in which a pair of rods approach or separate from each other.

According to the eighth invention, since at least one of the feeding drive mechanism and the lifting drive mechanism is equipped with a linear motor, non-contact movement can be realized, and since there is no rotating part, the durability of the workpiece conveying device is improved, and when driving noise reduction. In addition, since a linear motor is used, the installation space is small, and high-speed conveyance and high-precision positioning can be realized.

According to the ninth invention, since the clamp drive mechanism includes a linear motor, it can realize non-contact movement, and since it does not have a rotating part, the durability of the workpiece transfer device is improved, and the noise during driving is reduced. In addition, since a linear motor is used, the installation space is small, and high-speed conveyance and high-precision positioning can be realized.

According to the tenth invention, since at least one of the feed drive mechanism and the lift drive mechanism is equipped with a servo motor, the cost of the feed drive mechanism and/or the lift drive mechanism can be reduced, and a ball screw can be used as the power transmission mechanism. Mechanisms, mechanisms using racks and pinions, etc., facilitate the maintenance and adjustment of workpiece transfer devices and press machines.

According to the eleventh invention, since the clamp driving mechanism is equipped with a servo motor, the cost of the clamp driving mechanism is reduced, and a normal mechanism such as a ball screw mechanism or a mechanism using a rack and a pinion can be used for the power transmission mechanism, and the workpiece can be transported. Maintenance and adjustment of devices and press machinery becomes easier.

According to the twelfth invention, since the workpiece holding tools of a plurality of processes are provided on one base, for example, in a continuous automatic press machine having a plurality of processing steps, the number of feed carriers and feed carriers can be reduced. The number of lifting or clamping carriers that move together can therefore contribute to cost reduction. In addition, the structure and control can be further simplified by this.

According to the thirteenth invention, since the rod gap adjustment device is provided, the optimal rod gap can be set corresponding to the mold. In addition, when the workpiece transfer device is equipped with a clamp drive mechanism, when determining the maximum travel distance of the clamp drive mechanism, it is not necessary to add the dimension of the rod interval to the maximum travel distance (maximum clamping amount), so it is possible to Keep the maximum travel distance of the clamping drive mechanism short. In this way, the base can be reduced in weight. In addition, when placing a replacement die on the movable table during die replacement work other than press machines, the rod gap adjustment device can automatically widen the rod gap, so the die replacement operation becomes easier.

According to the fourteenth invention, since the rod is detachable from the frame, when the mold is replaced, the rod can be removed and placed on the moving table, and can be moved to the outside of the workpiece transfer area together with the moving table . In this way, the replacement of the workpiece holding tool becomes easier, and the mold replacement operation becomes easier.

According to the fifteenth invention, since the feed carriers are configured to be independently movable and controllable, each setting such as the moving distance and the moving time of each feed carrier can be freely set in accordance with the mold. Therefore, it is possible to flexibly cope with various pressing processes, and the versatility is improved.

In addition, since the feeding stroke and the feeding speed corresponding to the feeding position can be set arbitrarily for each feeding carrier, the best feeding action can be obtained in each mold of each processing process, The high-speed operation of the press machine can be realized, and the feeding error is reduced, and the production efficiency is improved.

According to the sixteenth invention, since adjacent feed carriers are connected by the connecting mechanism, when one feed carrier is driven, a plurality of feed carriers connected by the connecting mechanism are simultaneously driven in the workpiece transfer direction. Therefore, there is no need to arrange the feeding driving mechanism on all the feeding carrying frames, the number of parts of the feeding driving mechanism is reduced, the cost is reduced, and the structure and control are further simplified.

Description of drawings

Fig. 1 is a front view of a press machine according to Embodiment 1 of the present invention.

Fig. 2 is a perspective view of the workpiece conveying device according to Embodiment 1 of the present invention.

Fig. 3 is a perspective view showing a feed carrier according to Embodiment 1 of the present invention.

Fig. 4 is a sectional view along A-A of Fig. 3 .

Fig. 5 is a perspective view showing a workpiece holding tool according to Embodiment 1 of the present invention.

Fig. 6 is a diagram showing a modified example of the workpiece holding tool of the present invention.

Fig. 7 is a diagram showing another modified example of the workpiece holding tool of the present invention.

Fig. 8 is a perspective view showing a lift drive mechanism and a clamp drive mechanism according to Embodiment 1 of the present invention.

Fig. 9 is a diagram showing the operation of the workpiece holding tool according to Embodiment 1 of the present invention.

Fig. 10 is a plan view of the workpiece transfer device according to Embodiment 1 of the present invention.

Fig. 11 is a plan view of the workpiece transfer device according to Embodiment 1 of the present invention.

Fig. 12 is a plan view of the workpiece transfer device according to Embodiment 1 of the present invention.

Fig. 13 is a perspective view showing a workpiece transfer device according to Embodiment 2 of the present invention.

Fig. 14 is a perspective view showing a part of a workpiece conveying device according to Embodiment 3 of the present invention.

Fig. 15 is a front view showing a modified example of the workpiece transfer device of the present invention.

Fig. 16 is a front view showing a press machine according to Embodiment 4 of the present invention.

Fig. 17 is a perspective view showing a workpiece transfer device according to Embodiment 4 of the present invention.

FIG. 18 is an enlarged perspective view of a part of the workpiece conveying device according to Embodiment 4 of the present invention.

Fig. 19 is an A-A sectional view of Fig. 17 .

Fig. 20 is a view taken along direction B of Fig. 19 .

Fig. 21 is a view from the direction C of Fig. 19 .

Fig. 22 is a perspective view showing a part of a workpiece conveying device according to Embodiment 5 of the present invention.

Fig. 23 is a perspective view showing a workpiece transfer device according to Embodiment 6 of the present invention.

Fig. 24 is a perspective view showing a workpiece transfer device according to Embodiment 7 of the present invention.

Fig. 25 is a diagram showing the operation of the workpiece holding tool according to Embodiment 7 of the present invention.

Fig. 26 is a perspective view showing a modified example of the workpiece conveying device of the press machine according to the present invention.

Fig. 27 is a front view showing a conventional press machine.

Among them, 1...continuous automatic press (press machine), 1A...press main body, 2...workpiece, 7...universal manipulator, 11...mould, 12...upper mold, 13...lower mold, 14, 14A, 14B, 14AA, 14BA...rod, 20...beam, 21...supporting column, 22...slider, 23...machine tool, 30, 30A...moving table, 33A, 33B...frame, 40, 40A...rod interval adjustment device, 41, 41A, 41B , 41D, 41E, 41F...Continuous automatic feeder, 53, 53A, 53B, 53C, 53D, 53E...Linear motor for feeding (feeding drive mechanism), 56, 56A...Linking mechanism, 52, 52A, 52B, 52C...feeding carrier, 62, 62A...clamping carrier, 63...linear motor for clamping (clamping drive mechanism), 63A...servo motor for clamping (clamping drive mechanism), 72, 72A...lift Carrier, 73...Linear motor for lifting (lifting drive mechanism), 73A...Servo motor for lifting (lifting drive mechanism), 76...Finger clamp (workpiece holding tool), 77...Clamp (workpiece holding tool), 79...vacuum cap (workpiece holding tool), 80...elevating clamping device, 81...elevating device (elevating drive mechanism), 82...elevating carrier, 83...elevating bar, 91...clamping device ( Clamping drive mechanism), 92 ... clamping carrier.

Detailed ways

Embodiments of the present invention will be described below with reference to the drawings.

[Embodiment 1]

Embodiment 1 of the present invention will be described.

FIG. 1 shows a front view of a continuous automatic press machine (press machine) 1 according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of a continuous automatic press machine (work transfer device) 41 .

First, the overall configuration of a continuous automatic press 1 according to Embodiment 1 of the present invention will be described with reference to FIG. 1 .

The continuous automatic press 1 is composed of a press main body 1A composed of a machine tool 23, a support column 21, a beam 20, and a slider 22, a mold 11 equipped with an upper mold 12 and a lower mold 13, a movable table 30, and a continuous automatic feeder 41 poses. In addition, a general-purpose robot 7 for unloading workpieces is provided on the downstream side of the continuous automatic press machine 1 .

A machine tool 23 serving as a pedestal for the continuous automatic press 1 is provided under the floor (FL). The direction of intersection is the direction perpendicular to the paper surface in FIG. 1 ) and a plurality of (four in this embodiment) facing support columns 21 are erected respectively. In addition, a beam 20 incorporating a slider driving device (not shown) is supported on the support column 21 , and a slider 22 freely raised and lowered by the slider driving device is suspended below the beam 20 . In addition, a plurality of upper molds 12 corresponding to the press forming process are provided in a sequentially detachable manner along the feeding direction under the slider 22 . A movable table 30 is provided on the upper surface of the machine tool 23 , and a lower mold 13 forming a pair with the plurality of upper molds 12 is detachably disposed on the upper surface thereof so as to face each upper mold 12 .

The description of the mobile workbench 30 is as follows.

The movable table 30 is installed on the upper surface of the machine tool 23 so as to be freely carried in and out for exchanging the processed mold 11 (upper mold 12 and lower mold 13 ) with the mold 11 to be used next.

Rails (not shown) are laid on the floor and the machine tool 23 , and the mobile table 30 is equipped with a driving device capable of moving on the rails by itself. When the driving device is used to move the mobile table 30 by itself, the mobile table 30 passes through the pair of support columns 21 erected parallel to the workpiece conveying direction along the clamping direction, and is moved from the continuous automatic press 1 (or continuous automatic press 1) out (or in).

In addition, two sets of mobile tables 30 are usually provided, and in order to quickly change the order of molds 11 and workpiece models, a set of mobile tables 30 on which used molds 11 are placed is combined with a continuous automatic press machine in advance. 1, another set of mobile workbenches 30, which are installed with molds 11 to be used below in an external order, are automatically replaced.

Next, the continuous automatic feeder 41 will be described in detail.

In Fig. 2, the continuous automatic feeder 41 is equipped with: a pair of rods 14 arranged on the left and right with respect to the conveying direction of the workpiece, a feed carrier 52 arranged movably along the feeding direction on the rods 14, and a The linear motor for feeding (feeding drive mechanism) 53 for moving the carriage 52 in the feeding direction moves the rod 14 in the up and down direction (the direction perpendicular to the feeding direction and the clamping direction, the raising direction) and the clamping direction. A moving lifting and clamping device (a lifting drive mechanism and a clamping drive mechanism) 80 .

A pair of rods 14 are arranged in parallel with the feed direction with a predetermined distance from each other, and each has a fixed rod 141 fixed to the lifting and clamping device 80, and can be removed from the fixed rod 141 when the mold is replaced. The mobile stick 142.

On the machine tool 23 between the two supporting columns 21 on the upstream side and the two supporting columns 21 on the downstream side on both sides of the workpiece conveying direction of the mobile table 30, a frame 33A is respectively provided (only the upstream side is shown in FIG. 2 ). frame 33A). In addition, the raising/clamping device 80 is provided on these frames 33A. A pair of moving rods 142 is equipped with a plurality of feeding carriers 52 each constituting a pair, and a feeding linear motor 53 that moves each feeding carrier 52 in the feeding direction.

FIG. 3 shows an enlarged perspective view of the feed carrier 52 . In addition, FIG. 4 shows a sectional view taken along line A-A of FIG. 3 . As shown in these FIGS. 3 and 4 , a linear motor 57 is laid on the inner side surfaces of the pair of opposing rods 14 (surfaces on which the pair of rods 14 face each other). The linear motor 57 is composed of a linear guide rail 57A arranged along the side of the bar 14 in the feed direction, and a linear guide clamp 57B fixedly installed on the feed carrier 52 . In addition, rails 51 and 51 for feeding are provided on the outer side of the rod 14 as well as the linear guide 57 . By these linear guides 57 and the feed rails 51, 51, the feed carrier 52 is held movably in the feed direction.

The feeding linear motor 53 is arranged between the pair of feeding guide rails 51, 51 as a fixed part laid in the feeding direction along the outer side of the rod 14 (the surface of the pair of rods 14 facing away from each other). The magnetic plate 54 is composed of the magnetic plate 54 and the coil plate 55 as a moving part which is fixedly installed on the side of the feeding carrier frame 52 by means of a connecting member, facing the magnetic plate 54 . When an electric current flows through the coil plate 52 to generate a moving magnetic field, the coil plate 55 moves due to the force of attraction and rebound by the magnetic plate 54 . In this way, the feed carrier 52 is moved together with the coil plate 55, whereby the feed carrier 52 is fed. Since the linear motors 53 for feed are provided on the respective feed carriers 52, the plurality of feed carriers 52 are provided so as to be movable in the feeding direction each independently, and movement control can be performed individually.

And, here, although the linear motor 57 is provided on the inner side of the rod 14, the linear motor 53 for feeding is provided on the outer side of the rod 14, but also not limited to this position, the linear motor 57 and the linear motor 53 for feeding It is provided on any one of the inner side surface, outer side surface, upper surface, and lower surface of the rod 14 . In addition, the linear motor 57 and the linear motor 53 for feeding may be provided on the same surface of the rod 14 .

Here, in the conventional feeding device, although a plurality of workpiece holding tools are provided on the rod along the feeding direction, these workpiece holding tools are respectively fixed on the rod with predetermined intervals, so each workpiece holding mechanism only has Common feeding action in each processing step. In this way, the degree of freedom in mold design decreases, and the more types of molds, the higher the cost, and it is impossible to achieve high-speed operation corresponding to each of the various molds, making it difficult to improve productivity. In addition, since the distance between dies (work feed stroke) needs to be set in accordance with the die corresponding to the largest workpiece, the overall size of the press machine becomes larger than necessary, increasing its equipment cost.

On the contrary, in Embodiment 1, a plurality of feeding carrier frames 52 are provided on the rod 14 along the feeding direction, and each is controlled by a controller not shown so as to realize independent optimal operation. According to this configuration, since the workpiece conveyance distance can be set arbitrarily for each feed carrier 52, and the optimum feed stroke of the workpiece 2 can be set corresponding to the size of the mold 11 in each process, the degree of freedom in mold design It is possible to realize an optimum mold design for each process. Moreover, since the feed stroke and the feed speed corresponding to the feed position can be arbitrarily set for each feed carrier 52, the best feed action can be obtained for each mold 11 in each process, The high-speed operation of the continuous automatic press 1 can be realized, and feeding errors are reduced, and the production efficiency is improved.

In addition, as the feed drive mechanism of the feed carrier 52, since there is no rotating part and a feed linear motor 53 with a small number of parts is used, the feed drive mechanism can be lightened and miniaturized. A reduction in the manufacturing cost of the feed drive mechanism is achieved. Furthermore, since the linear motor 53 for feeding becomes small and lightweight, it is possible to suppress the vibration of the rod 14 at the time of starting, stopping, and jogging, and it is possible to achieve high speed and high positional accuracy of the continuous automatic feeder 41 as a whole. Therefore, high-speed operation of the continuous automatic press 1 can be realized. In addition, since the vibration of the rod 14 is suppressed, the noise during driving can be reduced, the working environment can be improved, and the durability of each part of the continuous automatic feeder 41 can be improved. As a result, the maintainability of the continuous automatic press 1 is improved, and the life of the continuous automatic press 1 is extended.

The feed carrier 52 is detachably equipped with a finger grip (work holding tool) 76 for holding the workpiece 2 by using a mounting bracket 76A so as to protrude toward the facing bar 14 .

FIG. 5 shows a perspective view of the finger clip 76 . As shown in FIG. 5 , in Embodiment 1, a plurality of (two in this embodiment) finger clips 76 are provided on the feed carrier 52 , and by using the bearings facing the other side not shown in the figure, The finger holder 76 of the frame 52 can simultaneously hold two workpieces 2 (see FIG. 3 ). Like this, since a plurality of (a plurality of processes) finger holders 76 are provided on one feed carrier 52, a plurality of workpieces 2 can be held, so the number of linear motors 53 for feeding can be reduced, Simplification of the configuration of the continuous automatic feeder 41 can be facilitated, and cost can be reduced.

Moreover, in Embodiment 1, the workpiece holding tool for holding the workpiece 2 uses the finger grip 76 placed while positioning the workpiece 2, but it is not limited to this, and the workpiece holding tool may be, for example, as shown in FIG. Clamp 77 for workpiece 2. Alternatively, for example, as shown in FIG. 7 , it may be a vacuum cap 79 for sucking and holding the workpiece 2 . In addition, in Embodiment 1, although the finger clamps 76 for holding the workpiece 2 of two process quantities are provided on the feed carrier 52, the number of finger clamps 76 can be matched with the mold to be one process quantity, or The amount of three steps or more may be used. In addition, the number of installed finger grips 76 is not limited to two with respect to one workpiece 2, and may be one or three or more.

In addition, although the linear motor has been described as an example where the magnetic plate is the fixed side and the coil plate is the moving side, the magnetic plate may be the moving side and the coil plate may be the fixed side.

Next, the raising and clamping device 80 for moving the rod 14 in the vertical direction (lifting direction) and the clamping direction will be described.

FIG. 8 shows a perspective view of the lifting and clamping device 80 . As shown in FIG. 8 , the lifting and clamping device 80 is provided on the frame 33A on the upstream side, and is composed of a lifting device (raising drive mechanism) 81 and a clamping device (clamping driving mechanism) 91 . The lifting/clamping device 80 is connected to the fixed rod 141 at the end of each rod 14 (two places in total).

The upper end of the lifting device 81 is mounted on the rod 14, and the lower end is equipped with two lifting rods 83, 83 having a cam follower 83A capable of moving in the clamping direction. Direction (up-and-down direction, raising direction) the lifting carrier frame 82 that lifts freely. In addition, a screw cap 85 is fixedly installed on the raised carrier 82 . In addition, a lift drive motor 84 is provided that rotates the screw 86 to lift the lift carrier 82 together with the nut 85 screwed to the screw 86 . In addition, on the lifting carrier 82, in order to make its lifting movement smoothly, and to balance the weight of the rod 14, the lifting carrier 82, etc., lifting counterweights 87 are respectively installed at the ends of the clamping direction. ,87.

The clamping device 91 is provided with: a clamping carrier 92 arranged between the two rising bars 83, 83, a linear guide 93 for guiding the clamping carrier 92 to be movable along the clamping direction, and a linear guide 93 for guiding the clamping carrier 92 92 clamping drive motor 94, screw rod 96 and nut 95 driven along the clamping direction.

Two lifting rods 83 , 83 penetrate through the clamp carrier 92 so as to be movable in the vertical direction. The linear guide 93 is composed of a linear guide rail laid along the clamping direction on the frame 33A, and a linear guide fixture fixed under the clamping carrier 92 . With this configuration, the clamping carrier 92 is provided movably in the up-down direction with respect to the raising bar 83 and is provided movably in the clamping direction using the linear guide 93 .

A screw 96 is connected to the clamp drive motor 94 . The screw 96 is arranged along the clamping direction, and penetrates the clamp carrier 92 . A nut 95 is fixed on the clamping carrier 92 , and a screw rod 96 is screwed into the nut 95 . When the clamping drive motor 94 is driven, the screw rod 96 rotates, and the clamping carrier 92 on which the nut 95 is fixed moves along the clamping direction. Thus, the cam follower 83A moves while rolling relative to the lift carriage 82, and the lift rod 83 moves in the clamping direction. Due to this movement, the bar 14 is moved in the clamping direction.

Furthermore, the pair of rods 14 are configured to move in opposite directions to each other. That is, the pair of rods 14 are configured to move toward or away from each other.

Next, the operation of the continuous automatic feeder 41 of the present invention shown in FIGS. 1 and 2 will be described by taking the case of loading the workpiece 2 into the continuous automatic press 1 as an example.

FIG. 9 shows the operation of the finger clip 76 according to the first embodiment.

(1) First, the workpiece 2 is loaded and set on an unillustrated workpiece receiving table at the workpiece loading position of the rod 14 (position at the upstream end of the rod 14 ) by a transfer device such as a general-purpose robot, not shown. At this time, the rod 14 is located in the lowered position (the lower end of the rod 14, the lower end of the lifting stroke), and is located in the released position (the rod is far away, the farther end of the clamping stroke). When the clamping device 91 is driven to move the rods 14 toward each other, the feed carrier 52 and the rods 14 move to the clamping position (the rods are close, the clamping stroke is close to the end), and the workpiece on the receiving table 2 is positioned at the finger grip 72 mounted on the feed carrier 52.

(2) Then, when the rod 14 is lifted by the lifting device 81 in the state where the workpiece 2 is placed on the finger holder 76, along with the action of the rod 14, the feed carrier 52 starts to lift from the lowered position. Move high until it reaches the raised position (rising end of raising stroke). In addition, when the uppermost feed carrier 52 is individually controlled and driven by the linear motor 53 for feeding, the feed carrier 52 will move toward the first processing step of the stamping process (the left end of the slide block 22 in FIG. 1 ). processing) position for feed movement. As a result, the workpiece 2 set on the finger holder 76 is transferred from the outside of the continuous automatic press 1 to the first processing step (forward transfer). In addition, it is not limited to the form in which the several feed carrier 52 is individually controlled and driven, You may control and drive synchronously, All perform the same operation|movement.

(3) After the workpiece 2 reaches the position of the first processing step of the stamping forming process, the lifting device 81 is driven to lower the rod 14 to the lowered position, and the workpiece 2 is placed on the lower part of the first processing step of the stamping forming process. mold 13.

(4) After the workpiece 2 is placed on the lower mold 13, when the rod 14 is moved away from the clamping device 91, along with the movement of the rod 14, the feed carrier 52 starts to loosen from the clamped position. Open and move until reaching the unclamped position, and the finger clamp 76 withdraws from the workpiece 2. Thereafter, when the feed carrier 52 is driven by the linear motor 53 for feeding, the feed carrier 52 performs a return movement (reverse transport) from the first processing step until it reaches the workpiece receiving table, and moves to the first workpiece reception desk.

And described finger clamp 76 moves to release position (rod recedes), retreats outside the area that interferes with mold 11, after carrying out the descending action of slide block 22, the upper mold 12 that is installed on its lower side descends, The workpiece 2 is pressurized and clamped between it and the lower mold 13, and a predetermined first processing step of forming is performed.

Next, the transfer of the workpiece 2 from the loading position to the first processing step position of the press forming process by the continuous automatic feeder 41 and the forming processing of the workpiece 2 in the first processing step are carried out to the next step. Conveying and processing of processing steps. That is, the conveyance of the workpiece by the continuous automatic feeder 41 from the first processing step position of the press forming to the second processing step position and the forming processing of the workpiece 2 in the second processing step are performed in the same manner as described above. In addition, the transfer of the workpiece from the second processing step position of the press forming process to the third processing step position by the continuous automatic feeder 41 and the forming processing of the workpiece 2 in the third processing step are also performed in the same manner as described above. .

When the forming process of the workpiece 2 in the lowermost processing step position (the fifth processing step in this embodiment) is completed, the workpiece 2 is moved from the lowest point of the stamping forming process by the continuous automatic feeder 41 The downstream processing position is transferred to the workpiece receiving table at the workpiece delivery position of the rod 14 (rod rear end position). The molded workpiece 2 carried out to the workpiece receiving table at the workpiece discharge position is carried out of the press by the general-purpose robot 7 .

As described above, the continuous automatic feeder 41 of the present invention performs the feeding and returning movement of reciprocating the feeding carrier 52 along the workpiece conveying direction on the rod 14, and the lifting movement (lifting) of moving the rod 14 up and down (elevating). Clamping and unclamping movement in which the rod 14 reciprocates in a direction horizontally perpendicular to the conveying direction of the workpiece. In addition, the workpiece 2 is moved from the upstream side (left side in FIG. ) of the lower mold 13 to the downstream side (right side of FIG. 1 ) on the lower mold 13 sequentially transferred.

10 shows the feed carrier 52 when the workpiece 2 is loaded from the workpiece receiving table (not shown) at the workpiece loading position to the uppermost processing step (the first processing step in this embodiment) of the continuous automatic press 1. Top view of the continuous automatic press 1 in position. In this FIG. 10 , the uppermost finger clip 76 is located in the state of the continuous automatic press 1 in a plan view (the state of FIG. 10 is viewed from the direction perpendicular to the paper in FIG. 10 ), and is placed on the mobile work. Except for the table top 31 on the table 30 , it is arranged at a position protruding from the table top 31 and the movable table 30 . At this time, the uppermost finger clip 76 is located on the upstream side of the downstream-side ends of the two upstream-side support columns 21 . This position is a position of an idle process for workpiece loading. On the other hand, at this time, the lowest finger grip 76 is located at the lowest processing step (the fifth processing step in this embodiment). In this state, when the workpiece 2 is placed on the finger holders 76, on the uppermost finger holder 76, the material (workpiece 2) supplied from the outside of the continuous automatic press 1 is placed, and on the other finger holders 76 On the top, each workpiece 2 in the state where the machining process has been completed is placed. In this state, each feed carrier 52 is moved in the feed direction, and each workpiece 2 is transferred to the next processing step.

11 is a plan view of the continuous automatic press 1 showing the position of the feed carrier 52 when the workpiece 2 is unloaded from the downstream processing step of the continuous automatic press 1 to the workpiece receiving table (not shown) at the workpiece unloading position. In this FIG. 11 , each feed carrier 52 is in a state in which the workpiece 2 has been conveyed and moved from the position of the preceding processing step (indicated by a two-dot chain line in FIG. 11 ) to the next processing step. In FIG. 11, the uppermost finger grip 76 is located at the uppermost processing step. On the other hand, the lowest finger grip 76 is located outside the table top 31 and is arranged at a position protruding from the table top 31 and the movable table 30 . At this time, the most downstream finger clip 76 is located on the downstream side of the upstream-side ends of the two downstream-side support columns 21 . This position becomes the position of the stop process for workpiece unloading. When each finger holder 76 transfers the workpiece 2 that has completed the processing in the processing step to the next processing step, at the same time, the finger holder 76 that has completed the workpiece 2 that has completed the lowest processing step is placed on the continuous automatic press 1. The workpiece 2 is transferred to the outside of the machine, and the workpiece 2 is carried out from the continuous automatic press 1 and transferred to the general-purpose manipulator 7 on the downstream side.

In the vicinity of the conventional feed box, due to the narrow installation space, it was not possible to install the general-purpose robot adjacent to the downstream side of the press, and a discharge conveyor had to be interposed. Accordingly, not only the installation space of the entire press device increases, but also the equipment cost increases. In addition, when the feed box part is protrudingly arranged on the side of the press main body on the loading side, since the stocking part of the material must be provided on the upstream side of the feed box part, it will not only increase the size of the press device as a whole, The installation space, and the installation space of the material input device is greatly restricted, resulting in an unreasonable structure.

However, according to this first embodiment, it is not the case that the rod 14 itself moves in all three-dimensional directions of feeding and returning movement, lifting movement (raising and lowering movement), and clamping and releasing movement. In this way, the movement of the finger clip 76 that requires a long stroke to the feeding direction is carried out as follows, that is, the feed drive mechanism (linear motor 53 for feeding) is directly set on the rod 14, and the finger clip 76 is equipped with it. The feeding carrier 52 moves in the feeding direction along the longitudinal direction of the bar 14 .

With this configuration, it is possible to compactly equip the feed drive mechanism requiring a long stroke in the press main body 1A. In this way, there is no feed box protrudingly provided on the side of the conventional press body, at which position the universal robot 7 can be arranged without the need for an ejection conveyor. As a result, not only the installation space of the press machine can be reduced, but also the equipment cost can be reduced.

In addition, since a general-purpose robot or a material stacking section can be provided adjacent to a press machine, a factory layout with a margin can be formed, and the resulting cost can be suppressed. In addition, the constraints on the design of the material feeding device are reduced, and an optimal structure can be obtained.

In addition, since the conventional feeding device moves the long and heavy rod at high speed, the driving device needs to have high output and high rigidity, and a large and expensive feeding device has to be used. However, in Embodiment 1, since the linear motor 53 for feeding is provided on the rod 14, only small and light objects can be driven, and only a small drive output is sufficient. In this way, the continuous automatic feeder 41 can be miniaturized, manufactured at low cost, and an energy-saving effect can be obtained. In addition, it is possible to increase the speed and positional accuracy of the entire continuous automatic feeder 41 and improve productivity.

However, when changing the die, since each finger holder 76 is also replaced in accordance with the die, it is necessary to place the finger holders 76, 76 together with the bar 14 on the movable table 30 and move it outward from the workpiece transfer area. Here, since the rod 14 is supported by the lifting and clamping device 80 provided on the frame 33A, the carrying out of the rod 14 is hindered.

Therefore, as shown in FIG. 12 , the movable rod 142 and the fixed rod 141 of the rod 14 are separated and removed. On the moving stage 30, a rod receiving table (not shown) with a lifting device is provided on the outside of the rod 14, and supports the divided rod 14 (moving rod 142) as shown in FIG. 12 .

Moreover, on the rod receiving table, a mechanism for moving the moving rod 142 along the clamping direction may also be provided. When it is put on, the distance between the rods will be widened, and the mold replacement work can be easily performed.

Moreover, when changing the mould, if the feed carrier 52 is positioned at a position that interferes with the support column 21 on the upstream side or the downstream side, as long as the feed carrier 52 is moved to the optimum position respectively in advance (as shown in Figure 12 As shown, the finger clip 76 and the end of the feed carrier 52 are accommodated in the space between the support columns 21 on the upstream side and the downstream side) and can be moved. Like this, just can avoid the interference of feeding carrier frame 52 and its accompanying finger clip 76 and support column 21, move out of machine very quickly. In this way, the ADC (Automatic Die Change) action time can be shortened, and the mechanical work efficiency can be improved.

[Embodiment 2]

Next, Embodiment 2 of the present invention will be described. In addition, the same reference numerals are used for the same parts as those described in Embodiment 1, and the description thereof will be omitted. The continuous automatic feeder 41A of Embodiment 2 uses one feeding linear motor 53A installed horizontally on the bar 14 to move the feeding movement of the plurality of feeding carriers 52 connected to each other. The continuous automatic feeder 41 of the mode 1 is different.

FIG. 13 shows a perspective view of a continuous automatic feeder 41A according to Embodiment 2 of the present invention. As shown in this FIG. 13 , in Embodiment 2, a moving member 58 is provided on the fixed rod 141 at one end of the rod 14 , and the moving member 58 is fed along the feeding direction by a linear motor 57 arranged between the moving member 58 and the upper surface of the rod 14 . The direction guides freely. The feeding drive mechanism of the present invention is constituted by including the moving member 58, the linear motor 57, and the linear motor 53A for feeding.

Since there is a pair of rods 14, one feed drive mechanism is respectively provided on each rod, and there are two in total. Here, the linear motor 57 has a linear guide rail 57A provided on the fixed rod 141 at the upstream end of the rod 14 and laid parallel to the longitudinal direction of the rod 14 (feed direction). A linear guide jig 57B mounted below the moving member 58 travels on the rail 57A.

The linear motor 53A for progress includes a magnetic plate 54A provided on the fixed rod 141 and laid parallel to the linear guide 57 , and a coil plate 55A attached to the lower surface of the moving member 58 .

In addition, in the moving member 58 , on a surface corresponding to the outer side surface of the rod 14 , a connection mechanism 56 for connecting a plurality of feed carriers 52 is provided. Linkage mechanisms 56 are provided between the moving member 58 and the uppermost feed carrier 52 and between adjacent feed carriers 52 . The plurality of feed carriers 52 are connected to a moving member 58 while being connected to each other by these connecting mechanisms 56 , and the mutual intervals of the respective feed carriers 52 are adjusted to a predetermined workpiece conveyance pitch by these connecting mechanisms 56 . In addition, each feed carrier 52 is fed along the linear guide rail 59A laid on the bar 14 along its longitudinal direction and the linear guide jig 59B installed under the feed carrier 52 in order to advance on the rail. The direction guides freely.

Device configurations other than the feed drive mechanism described above are the same as those in Embodiment 1, and therefore description thereof will be omitted here.

According to this second embodiment, since the adjacent feeding carriers 52 are connected by the connecting mechanism 56 and connected to the moving member 58, when the moving member 58 is moved in the feeding direction by the linear motor 53A for feeding, a plurality of That is, the feed carriers 52 move simultaneously while maintaining a predetermined distance from each other.

Also, when the mold is replaced, the rod 14 is divided into a moving rod 142 and a fixed rod 141 . To this end, connecting means are provided on its segmented parts. The connection mechanism 56 is also provided near the connection device of the rod 14, and the connection mechanism 56 is also divided into a moving part and a fixed part in the same way as the rod 14 when the mold is replaced.

According to the continuous automatic feeder 41A of embodiment 2, although the feed carrier 52 is provided with a plurality of along the feeding direction on the rod 14, due to the connecting mechanism 56 between the adjacent feed carriers 52 Therefore, for one rod 14, only one feeding linear motor 53A is required.

In this way, since the number of parts of the feeding driving mechanism is small, the structure can be simple, small and light, so the output of the feeding driving mechanism can be small, which not only saves energy, but also reduces the manufacturing cost.

[Embodiment 3]

Next, Embodiment 3 of the present invention will be described. In addition, the same code|symbol is used for the same part as what demonstrated in Embodiment 1 and Embodiment 2, and description is abbreviate|omitted. Embodiment 3 differs from Embodiment 1 in that the feed carrier 52 of Embodiment 1 is driven by a servo motor.

FIG. 14 is a perspective view showing part of a continuous automatic feeder 41B according to Embodiment 3. FIG. As shown in this FIG. 14 , rods 14AA are the same as in Embodiment 1, and a pair is provided parallel to the workpiece conveying direction, and a feed carrier 52B is provided on a pair of feed rails 51, 51 above the rod 14AA. Each is arranged so that movement is possible individually. In addition, although one feed carrier 52B is shown in FIG. 14, an arbitrary number may be provided as needed.

The feeding carrier 52B is driven by a feeding servo motor (feeding drive mechanism) 58B provided on the rod 14AA to perform feeding operation. The ball screw 54B chain-driven by the feed servo motor 53B is provided on the rod 14AA. When the ball screw 54B rotates, the unillustrated ball nut provided on the feed carrier 52B moves, and the feed load is carried. The frame 52B moves together with the ball nut. Like this, feed carrier 52B just carries out feeding action.

Since the feed carrier 52B is driven by the feed servo motor 53B, the cost of the feed drive mechanism can be reduced, and since the ball screw mechanism can be used in the power transmission mechanism, the continuous automatic feeder 41B and the feeder 41B can be easily implemented. Maintenance and adjustment of continuous automatic press 1. Furthermore, as the power transmission mechanism of the feed servomotor 53B, a mechanism such as a mechanism using a rack and a pinion may be employed.

In addition, in each of the above-mentioned embodiments, although the general-purpose manipulator has been described as an example of being installed on the downstream side of the press machine and used for unloading, it does not matter whether it is installed on the upstream side of the press machine and used for workpiece loading. , or whether it is used in both the workpiece unloading and the workpiece loading, there is no problem.

In addition, in each of the above-described embodiments, although the frame 33A is provided on the machine tool, it may be provided above the bars 14 between the support columns 21 as shown in FIG. 15 . In this case, since the rod 14 is suspended, the feed carrier 52 is supported on the lower surface of the rod 14 . By arranging the frame 33A above in this way, the visibility in the continuous automatic press machine 1 can be improved.

[Embodiment 4]

Fig. 16 is a front view of a continuous automatic press (press machine) 1 provided with a workpiece transfer device according to Embodiment 4 of the present invention. Fig. 17 is a perspective view of a continuous automatic feeder 41C as a workpiece conveyance device. Fig. 18 is an enlarged perspective view of a part of the continuous automatic feeder 41C. 19 to 21 show partial enlarged views of the continuous automatic feeder 41C. In addition, the same reference numerals are used for the same parts as those described in Embodiment 1 to Embodiment 3, and description thereof will be omitted.

First, as shown in FIG. 16 , four columnar support columns 21 are erected on the machine tool 23 located at the lower part of the press frame 10 of the continuous automatic press 1 , and a beam 20 is provided on the support columns 21 . A slider driving device is incorporated in the beam 20 to drive up and down the slider 22 located below the beam 20 . In addition, the upper mold 12 is attached to the lower surface of the slider 22 . A lower mold 13 is arranged on the movable workbench 30 facing the slider 22, and the workpiece is punched and formed by the cooperation of the upper mold 12 and the lower mold. A pair of left and right rods 14B, 14B extend parallel to the workpiece conveyance direction with the upper die 12 and the lower die 13 interposed therebetween.

As shown in FIG. 17 , on the machine tool 23 between the two support columns 21 on the upstream side and between the two support columns 21 on the downstream side, there are respectively provided upstream side support columns 23 along the direction perpendicular to the workpiece conveying direction. Frame 33A, frame 33B on the downstream side. On the frame 33A on the upstream side and the frame 33B on the downstream side, two pairs of moving rails 42 are respectively provided in parallel to each other along the direction perpendicular to the workpiece conveying direction, and are provided under the two ends of the rods 14B, 14B. The side bases 47A, 47B, 47C, and 47D are arranged so as to be movable on the moving rail 42 . In this way, rods 14B, 14B straddle movable table 30, are supported by frames 33A, 33B located on both sides of movable table 30, and can move in a direction perpendicular to the workpiece conveyance direction.

A rack 43 is provided in parallel to the moving rail 42 near the moving rail 42 on the front side, and gears 43P, 43P provided on the bases 47A, 47B, respectively, engage with the racks 43 , 43 . Interlocking racks 34A, 34A parallel to the moving rail 42 are provided on the bases 47A, 47B facing the facing bases 47C, 47D, respectively, and interlocking gears 35, 35, and 35 bites. In addition, interlocking racks 34B, 34B parallel to the moving rail 42 are provided on the bases 47C, 47D facing the bases 47A, 47B, respectively, and these interlocking racks 34B, 34B engage with the interlocking gears 35, 35 .

When the drive shaft (not shown) passing through the rod 14 in the longitudinal direction is rotated by the moving motor 44 provided on the base 47A, the gears 43P, 43P driven by the drive shaft gear are rotated. . At this time, since the gears 43P, 43P engage with the racks 43, 43, respectively, the near side bar 14B moves together with the bases 47A, 47B. When the interlocking racks 34A, 34A move at the same time, because the interlocking gears 35, 35 are engaged with the interlocking racks 34B, 34B, the interlocking racks 34B, 34B also move, and the rod 14B on the inside is in contact with the base. 47C, 47D move together.

In this way, by providing interlocking racks 34A, 34B and interlocking gear 35, the distance between the pair of rods 14B, 14B formed by the rod 14B on the front side and the rod 14B on the back side in FIG. 17 can be adjusted. The rod spacing adjustment device 40. By adjusting the distance between the rods 14B, 14B according to the die using the rod distance adjusting device 40 , it is possible to flexibly cope with various press processes, and thus the versatility of the continuous automatic press machine 1 can be improved.

As shown in Fig. 17 and Fig. 18, a pair of feeding rails 51, 51 are respectively provided on the rods 14B, 14B, and a plurality of feeding carriers are movably arranged on the pair of feeding rails 51, 51. 52C. In Embodiment 1, although three feeding carriers 52C are used, it may be one, two, or four or more as needed.

The feed carrier 52C is driven by a feed linear motor (feed drive mechanism) 53C (see FIG. 19 ) to perform a feed operation. Here, the so-called feeding operation refers to the movement of the feeding carrier 52C along the feeding direction. In addition, the feeding direction means a direction parallel to the workpiece conveyance direction.

FIG. 19 shows a sectional view taken along line A-A of FIG. 17 . As shown in FIG. 19 and FIG. 18 , the linear motor 53C for feeding includes a magnetic plate 54C that is provided between a pair of rails 51 and 51 for feeding as a fixed part, and a magnetic plate 54C that is placed between the lower surface of the feeding carrier 52C and the moving part as a moving part. The coil plate 55C is provided facing the magnetic plate 54C. When current flows through the coil plate 55C to generate a moving magnetic field, the coil plate 55C moves due to the force of attraction and rebound by the magnetic plate 54C. In addition, the feeding carrier 52C is moved together with the coil plate 55C, so that the feeding operation of the feeding carrier 52C can be performed. Here, since the linear motors 53C for feeding are respectively provided on the plurality of feeding carriers 52C, the feeding carriers 52C are independent and can move independently in the feeding direction on the feeding rails 51 , 51 . control.

In Fig. 17, Fig. 18 and Fig. 19, a pair of rails 61 and 61 for clamping are provided on the top of the feed carrier 52C in a direction perpendicular to the rail 51 for feeding, and a pair of rails for clamping 61 and 61 are movably arranged with a clamping carrier 62 . The clamping carrier 62 is driven by a clamping linear motor (clamping drive mechanism) 63 (see FIG. 20 ) to perform a clamping operation. Here, the so-called clamping action refers to the action in which the clamping carrier 62 moves along the clamping direction. In addition, the so-called clamping direction refers to a direction horizontally perpendicular to the feeding direction, and refers to a direction in which a pair of facing clamping carriers 62 approach and move away from each other.

FIG. 20 shows a view from the direction B of FIG. 19 . As shown in FIGS. 19 and 20 , the clamping linear motor 63 has a magnetic plate 64 that is installed between a pair of clamping rails 61 and 61 as a fixed part, and a magnetic plate 64 that is connected to the magnetic plate under the clamping carrier 62 as a moving part. The plate 64 faces the coil plate 65 provided. When a current flows through the coil plate 65 to generate a moving magnetic field, the coil plate 65 moves due to the force of attraction and rebound by the magnetic plate 64 . Furthermore, the clamping carrier 62 is moved together with the coil plate 65, so that the clamping carrier 62 can perform a clamping action.

As shown in FIGS. 17 and 18 , on the back surface in FIG. 17 of the L-shaped bracket portion 66 of the clamping carrier 62 (the surfaces where the L-shaped bracket portions 66 of a pair of clamping carrier 62 face each other) Above, a pair of rails 71 and 71 for raising are provided along the up and down direction, and a lifting carrier 72 is arranged movably on the pair of rails 71 and 71 for raising. The lift carriage 72 is driven by a lift linear motor (lift drive mechanism) 73 (see FIG. 21 ) to perform a lift operation. In addition, the so-called lifting direction refers to the direction perpendicular to the feeding direction and the clamping direction, and refers to the direction in which the lifting carrier 72 moves up and down.

FIG. 21 shows a view taken along arrow C of FIG. 19 . As shown in FIGS. 19 and 21 , the linear motor 73 for raising is provided with a magnetic plate 74 that is arranged between a pair of rails 71 and 71 for raising as a fixed part, and in FIG. The coil plate 75 is provided to face the magnetic plate 74 on the surface near the front side of the coil. When a current flows through the coil plate 75 to generate a moving magnetic field, the coil plate 75 moves due to the force of attraction and rebound by the magnetic plate 74 . In addition, the lifting carriage 72 is moved together with the coil plate 75, so that the lifting carriage 72 can be raised.

As shown in FIGS. 17 and 19 , detachable finger clips 76 , 76 are provided on the raised carrier 72 as workpiece holding tools for holding the workpieces 2 , 2 . As shown in Fig. 5 mentioned above, in Embodiment 4, the same as Embodiment 1, two finger clips 76, 76 are provided on the lifting carrier 72, and another not shown finger clip 76, 76 can be used for the clamping action. The two finger clamps 76, 76 of the raised carrier 72 facing each other on the one hand clamp the two workpieces 2, 2 (see FIG. 18 ) simultaneously.

Here, because the finger clips 76, 76 are arranged on the lifting carrier 72, and the lifting carrier 72 is arranged on the clamping carrier 62, the finger clips 76, 76 can be moved along the lifting direction and the clamping direction. Therefore, in Embodiment 4, the lifting carrier 72 and the clamping carrier 62 correspond to the base 50 of the present invention.

Since a plurality of finger holders 76, 76 (multiple process quantities) are provided on one lifting carrier 72 in this way, a plurality of workpieces 2 can be held, so the linear motor 53C for feeding and the linear motor 53C for clamping can be reduced. The number of installations of the motor 63 and the linear motor 73 for raising can promote the simplification of the structure of the continuous automatic feeder 41C, and can reduce manufacturing cost.

Furthermore, in Embodiment 4, although the workpiece holding tool for holding the workpiece 2 uses the finger holder 76 placed while positioning the workpiece 2, it is not limited to this, and for example, it may be used to hold the workpiece as in FIG. 7 of Embodiment 1. 2 clips 77. In addition, in Embodiment 4, although two finger grips 76, 76 are provided on the elevated carrier frame 72, the number of finger grips 76, 76 may be one or three to match the mold. more than one.

Same as the above description, on the other side of the bar 14B, there are also a feed carrier 52C, a clamping carrier 62 and a lifting carrier 72, each of which is driven by a linear motor, so that the feeding action (with the workpiece) can be performed. Movement parallel to the conveying direction), clamping action (movement horizontally perpendicular to the feeding direction) and lifting action (movement in the up and down direction).

In addition, although the magnetic plate of each linear motor is described as the fixed side and the coil plate is the moving side, the magnetic plate may be set as the moving side and the coil plate may be set as the fixed side.

Next, referring to FIG. 17 and the aforementioned FIG. 9 , the operation of the workpiece conveying device according to Embodiment 4 will be described by taking a case where a workpiece is conveyed from the first processing step to the second processing step as an example.

(1) First, the workpiece 2 is press-processed in the first processing step, and the slider 22 turns upward.

At this time, the lifting carrier 72 fixed by the finger clip 76 is in the lowering position (the lowering end of the lifting stroke). In addition, the clamping carriage 62 supporting the raised carriage 72 is in the unclamped position (far end of the clamping stroke). When the clamping carrier 62 is driven by the linear motor 63 for clamping, the clamping carrier 62 is clamped along the rails 61 and 61 for clamping from the loosened position to the clamped position (near the end of the clamping stroke). Move, the workpiece 2 on the lower mold 13 of the first processing step is placed on the finger holder 76.

(2) Then, when the lifting carriage 72 is driven by the lifting linear motor 73 in the state where the workpiece 2 is placed at the finger holder 76, the lifting carriage 72 starts to rise from the raised position. Move until it reaches the raised position (rising end of raising stroke). In addition, when the feed carrier 52C is driven by the feed linear motor 53C, the feed carrier 52 supporting the clamp carrier 62 is controlled and driven to perform feed movement. As a result, the workpiece 2 set on the finger holder 76 is transferred from the first processing step to the second processing step.

(3) After the workpiece 2 has reached the second processing step, the lifting carrier 72 is driven by the linear motor 73 for raising, so that the lifting carrier 72 is lowered and moved to the lowered position, and the workpiece 2 is placed in the second processing step. On the lower mold 13.

(4) After the workpiece 2 is placed on the lower mold 13, when the clamping carrier 62 is driven by the linear motor 63 for clamping, the clamping carrier 62 starts to loosen and move from the clamping position until it reaches the loosening position , the finger clip 76 is withdrawn from the workpiece 2. Also, when the feed carrier 52C is driven by the feed linear motor 53C, the feed carrier 52C moves back from the second processing step to the first processing step, and moves to the first first processing step.

And, after the finger clamp 76 moves to the loosened position and retreats out of the interference area with the upper mold 12, the sliding block 22 is lowered, and the upper mold 12 and the lower mold 13 installed on the lower surface thereof The workpiece 2 is sandwiched between them, and pressurized, and the stamping process of the predetermined second processing step is performed.

As described above, the continuous automatic feeder 41C of Embodiment 4 is provided with the feed carrier 52C freely movable in the feeding direction on the rods 14B, 14B, and the feed carrier 52C freely movable in the clamping direction. The clamping carrier 62 and the lifting carrier 72 freely movable in the rising direction on the clamping carrier 62 are each driven by a linear motor to carry out feeding/returning movement of reciprocating movement in the feeding direction, along and forward movement. Three-dimensional action of reciprocating clamping and unclamping movement in the clamping direction perpendicular to the material direction, and lifting movement (lifting and lowering movement) in the up and down direction. In addition, by appropriately reciprocating the workpiece holding tool held on the lifting carrier 72 in the feeding direction, raising direction, and clamping direction, the workpiece 2 is lifted from the lower mold on the upstream side (the left direction in FIG. 16 ). 13 is sequentially transferred to the lower mold 13 on the downstream side (right direction in FIG. 16 ).

In this way, since the feed carrier 52C is provided so as to be movable on the rods 14B, 14B, the drive target of the feed drive mechanism can be small. Therefore, unlike the conventional ones, the feed drive mechanism can be made small, and the feed box with the feed drive unit built in is not required, so the feed box does not protrude from the side of the press main body, and the continuous automatic press 1 as a whole become compact. In addition, since the feed box does not protrude, a workpiece unloading device and the like can be arranged near the continuous automatic press 1 .

When changing the mold, since each finger holder 76 is also replaced in accordance with the mold, it is necessary to place the finger holders 76, 76 together with the rods 14B, 14B on the movable table 30 and move them outward from the workpiece transfer area. Here, although the rods 14B and 14B themselves can pass between the support columns 21 and move out of the workpiece transfer area, the rod spacing adjustment device 40 connected to the upstream and downstream of the rods 14B and 14B is installed on the support column 21 on the upstream side. Since it is on the frame 33A, 33B between the support column 21 on the downstream side, it will hinder the carrying out of the rods 14B, 14B.

Therefore, the rods 14B, 14B and the rod gap adjusting device 40 including the driving shaft are configured so as to be separable, and the rods 14B, 14B are separated from the rod gap adjusting device 40 when the mold is replaced. That is, in Embodiment 1, the rods 14B and 14B are detachable from the rod gap adjusting device 40 , and are composed of a fixed rod fixed to the rod gap adjusting device 40 and a movable rod that can be separated from the fixed rod. In this way, the rods 14B, 14B can be removed from the frames 33A, 33B.

Furthermore, since the movable table 30 is provided with a rod receiving table 48 with a lifting device as shown in FIG. 17, the rod receiving table 48 supports the divided rod 14B as shown in FIG. , 14B.

In addition, on the rod receiving table 48, a mechanism for moving the rods 14B, 14B in the clamping direction is provided. The distance between rods can be widened, and mold replacement work can be easily performed.

[Embodiment 5]

Next, a continuous automatic feeder 41D according to Embodiment 5 will be described using FIG. 22 . Fig. 22 is a perspective view showing a part of the continuous automatic feeder 41D. Embodiment 5 differs from Embodiment 4 in that the feeding carrier 52C, the clamping carrier 62 and the raising carrier 72 are driven by servo motors, so this point will be described using FIG. 22 , and other The description of parts is the same as that of Embodiment 4, and therefore, descriptions of symbols used for parts that are the same as those described in Embodiment 4 and Embodiments 1 to 3 are omitted.

As shown in FIG. 22 , the bar 14BA is the same as the fourth embodiment, and a pair is arranged parallel to the workpiece conveying direction, and a plurality of feeding carriers 52D are provided on a pair of feeding rails 51, 51 above the bar 14BA. , are placed separately movable. In addition, although one feed carrier 52D is shown in FIG. 22, an arbitrary number may be provided as needed.

The feeding carrier 52D is driven by a feeding servo motor (feeding drive mechanism) 53D provided on the bar 14BA to perform feeding operation. The ball screw 54D chain-driven by the feeding servo motor 53D is provided on the rod 14BA. When the ball screw 54D rotates, the unillustrated ball nut provided on the feeding carrier 52D moves, and the feeding material is carried. The frame 52D moves together with the ball nut. In this way, the feeding carrier 52D promptly performs the feeding action.

A pair of clamping rails 61, 61 are arranged on the upper surface of the feeding carrier 52D along the direction perpendicular to the feeding rail 51, and a clamping carrier is movably arranged on the pair of clamping rails 61, 61. Rack 62A. The clamping carrier 62A is driven by a clamping servo motor (clamping drive mechanism) 63A provided on the feed carrier 52D to perform a clamping operation.

The ball screw 64A driven by the clamping servo motor 63A is provided on the feed carrier 52A. When the ball screw 64A rotates, the unillustrated ball nut provided on the clamping carrier 62A moves to clamp the material. Carriage 62A moves together with the ball nut. In this way, the clamping carrier 62A performs clamping action.

On the surface of the inner side in FIG. 22 of the L-shaped bracket part 66A of the clamping carrier 62A, a pair of raising rails 71, 71 are provided along the up and down direction, and can be moved on the pair of raising rails 71, 71. Ground configuration with raised carrier 72A. The lift carrier 72A is driven by a lift servomotor (lift drive mechanism) 73A to perform a lift operation.

The raising servo motor 73A drives the ball screw 74A rotatably provided on the raising carrier 72A via a gear box 73G provided on the raising carrier 72A. When the ball screw 74A rotates, a ball nut (not shown) provided on the raised carrier 72A moves, and the raised carrier 72A moves together with the ball nut. In this way, the raising of the carrier frame 72A is carried out the lifting action. A detachable finger grip (not shown) is provided as a workpiece holding tool for holding a workpiece on the lift carrier 72A, which is the same as in Embodiments 1 to 4, and therefore description thereof will be omitted.

In addition, the operations of the feeding carrier 52D, the clamping carrier 62A, and the lifting carrier 72A are also the same as those in Embodiments 1 to 4, and therefore description thereof will be omitted.

The same as the above description, on the other rod not shown in the figure, the same feeding carrier, lifting carrier and clamping carrier as the rod 14BA are also provided facing each other, and each is driven by a servo motor. Carry out feeding action, lifting action and clamping action.

As described above, in Embodiment 5, the continuous automatic feeder 41D is provided with a feed carrier 52D freely movable in the feeding direction on the bar 14BA, and a clamp freely movable in the clamping direction on the feed carrier 52D. The tightening carrier 62A and the lifting carrier 72A freely moving along the rising direction on the clamping carrier 62A are each driven by a servo motor, and are respectively controlled by a controller not shown in the figure to control the feeding action, clamping action and Lifting action, thus acting as a three-dimensional continuous automatic feeder. In addition, by appropriately reciprocating the workpiece holding tool held by the lifting carrier 72 in the feeding direction, clamping direction, and raising direction, the workpiece 2 is lifted from the lower mold 13 on the upstream side (the left direction in FIG. 16 ). It is sequentially transferred to the lower die 13 on the downstream side (the right direction in FIG. 16 ).

[Embodiment 6]

Next, the continuous automatic feeder 41E of Embodiment 6 is demonstrated using FIG. 23. FIG. Fig. 23 is a perspective view showing a part of a continuous automatic feeder 41E as a workpiece transfer device. The same reference numerals are used for the same parts as those described in Embodiment 1 to Embodiment 5, and description thereof will be omitted.

In Embodiment 6, adjacent carrier frames 52C in Embodiment 4 are connected by a connection mechanism 56A. In this way, the plurality of feed carriers 52C are arranged such that adjacent feed carriers 52C have predetermined intervals. Since all the feed carrier frames 52C supported by one rod 14 operate in conjunction with such an arrangement, it is not necessary to provide a feed drive mechanism for each of the feed carrier frames 52C. In FIG. 23 , a linear motor 53E as a feed drive mechanism is provided only on the feed carrier 52C on the upstream side.

Furthermore, as shown in the fourth embodiment, linear motors may be provided on all the feed carriers 52C, and the respective linear motors may be driven in synchronization with each other.

Since the operation of the continuous automatic feeder 41E is the same as that of Embodiment 4, description thereof will be omitted.

[Embodiment 7]

Next, a continuous automatic feeder 41F according to Embodiment 7 will be described using FIG. 24 . Fig. 24 is a perspective view of a continuous automatic feeder 41F as a workpiece transfer device. The same reference numerals are used for the same parts as those described in Embodiment 1 to Embodiment 6, and description thereof will be omitted.

In the seventh embodiment, in the fourth embodiment, the clamping linear motor 63 is removed, and the lifting carrier 72 is supported by the feeding carrier 52C. In this way, since the clamping action is removed, the distance between the pair of raised carriers 72 that are arranged on the pair of rods 14 and face each other is kept constant. The horizontal frame has a horizontal frame bar 78. On the horizontal bar 78, a vacuum cap (work holding tool) 79 for sucking the workpiece by negative pressure is arranged. Here, in Embodiment 7, since the vacuum cap 79 is held on the lifting carrier 72 by means of the cross bar 78, and the lifting carrier 72 is provided so as to be movable in the raising direction, the raising carrier 72 is equivalent to In the base 50A of the present invention.

According to the above structure, the continuous automatic feeder 41F of Embodiment 7 can perform a two-dimensional operation by performing the feeding operation by the feeding carrier 52C and raising the carrier 72 to perform the raising operation.

Next, referring to FIG. 24 and FIG. 25 showing the operation of the seventh embodiment, the operation of the workpiece conveying device according to the seventh embodiment will be described taking the case of conveying the workpiece from the first processing step to the second processing step as an example.

(1) First, the workpiece 2 is press-processed in the first processing step, and the slider 22 turns upward.

At this time, the horizontal bar 78 provided on the elevated carrier 72 is arranged at the standby position between the first processing step and the second processing step. At the standby position, the lifting carrier 72 is located at the rising position (rising end of the lifting stroke). When the stamping step is completed, the feed carrier 52C supported by the lifting carrier 72 is controlled and driven to return to the first processing step side. In addition, the horizontal bar 78 moves from the standby position to the first processing step.

Then, the lifting carrier 72 is lowered to the lowering position (lower end of the lifting stroke), and the workpiece 2 on the lower mold 13 of the first processing step is adsorbed by the vacuum cap 79 arranged on the horizontal bar 78 .

(2) Next, in a state where the workpiece 2 is sucked by the vacuum cap 79 , the lifting carrier 72 is raised and moved to a raised position (rising end of the raising stroke). In addition, the feed carrier 52C is controlled to be driven to perform feed movement. As a result, the workpiece 2 sucked by the vacuum cap 79 is transferred from the first processing step to the second processing step.

(3) After the workpiece 2 reaches the second processing step, the lifting carrier 72 is lowered and moved to the lowered position, and the workpiece 2 is placed on the lower mold 13 of the second processing step. Thereafter, the suction force of the vacuum cap 79 is released.

(4) After the workpiece 2 is placed on the lower mold 13, the lifting carrier 72 is raised and moved to the raised position, and the feeding carrier 52C is controlled and driven to return and move to the initial standby position.

Then, after the horizontal bar 78 moves to the standby position and retreats out of the interference area with the upper mold 12, the slide block 22 is lowered, and the workpiece is sandwiched between the upper mold 12 and the lower mold 13 mounted therebelow. 2, and pressurize, and carry out the stamping process of the given second processing step.

As described above, the continuous automatic feeder 41F of Embodiment 7 is provided with the feed carrier 52C freely movable in the feed direction on the bar 14, the lifter freely movable in the raise direction on the feed carrier 52C. The carriers 72 are each driven by a linear motor, and perform a two-dimensional operation of reciprocating feeding and returning movement in the feeding direction and lifting movement reciprocating in the vertical direction. In addition, by appropriately reciprocating the horizontal frame bar 78 provided on the raised carrier 72 and the vacuum cap 79 provided on the horizontal frame bar 78 in the feeding direction and the raising direction, the workpiece 2 is moved from the upstream side The top of the lower mold 13 (left direction in FIG. 24 ) is sequentially transferred to the lower mold 13 on the downstream side (right side direction in FIG. 24 ).

Moreover, in Embodiment 7, although the vacuum cap 79 as a workpiece holding tool was arrange|positioned on the horizontal frame bar 78, as shown in FIG.

In addition, in Embodiment 7, although the linear motor 63 for clamping of Embodiment 4 is eliminated, it is also possible to stop the driving of the linear motor 63 for clamping in the configuration of Embodiment 4, and to make the horizontal bar 78 and the vacuum The cap 79 performs two-dimensional movement.

In each of the above-described embodiments, each drive mechanism is collectively used as a linear motor or a servo motor, but a linear motor and a servo motor may be combined. For example, the feed may be driven by a linear motor, the lifting and clamping may be driven by a servo motor, and the workpiece holding tool may be moved, and at least one driving source may be a linear motor. In addition, for example, a servo motor may be used for feeding, a linear motor may be used for lifting and clamping, and a workpiece holding tool may be moved, and at least one driving source may be a servo motor. That is, a linear motor or a servo motor can also be used as the driving mechanism for feeding, clamping, and raising as needed.

Moreover, in the above description, although the so-called 2-column continuous automatic press machine having 4 supporting columns and 1 slide block has been described, it can also be used for a so-called 3-column continuous press machine having 6 supporting columns and 2 slide blocks. Column-type continuous automatic presses or continuous automatic presses with more than the number of support columns and slides in press machinery.

Furthermore, the workpiece transfer device of the press machine according to the present invention can also be effective even if it is modified.

As a trend in press machines in recent years, retrofitting is being actively carried out by replacing the cam-driven workpiece transfer device of the existing press machine with a servo motor-driven device to improve functions such as responding to workpiece diversification.

In the case of such remodeling, it is necessary to replace the feeding box, which is a main part of the feeding device, protrudingly arranged on the side of the press main body on the unloading side (or the workpiece loading side). However, since the feed box is a large and heavy object and is protruded from the side of the press main body, during the replacement work of the feed box, including welding the feed box mount on the press main body, It takes a lot of man-hours.

In this type of modification, since the production and processing line needs to be stopped for a long period of time, although the long-term holidays of the factory such as the New Year holiday and the Obon holiday can be used as the construction period, if the number of working hours is large, due to the vacation The production and processing line has to be stopped during the period before and after, so it cannot meet the requirements of users who do not want to stop the production line for a long time.

However, in the present invention, since the feed carrier is provided so as to be movable on the rod, the drive target of the feed drive mechanism can be made smaller, and thus the feed drive mechanism can be made smaller. Therefore, if the workpiece transfer device using the press machine of the present invention is refitted, only the existing large feed box is removed, and there is no need to replace and install a new large feed box. It is relatively easy to pre-assemble the miniaturized feeding device, lifting device, clamping device, etc., and replace them at the same time, and the retrofitting operation can be carried out in a very short period of time.

Since the stop period of the processing line can be very short, by using the long-term vacation of the factory such as the New Year's holiday and the Obon holiday as the construction period, it will not affect the user's production management. That is, the construction period required for refitting can be shortened, and the impact on the user's productivity can be minimized.

Although the best configuration, method, etc. for carrying out the present invention are disclosed in the above description, the present invention is not limited thereto. That is, the present invention is mainly specifically illustrated and described for a specific embodiment, but as long as it does not deviate from the scope of the technical idea and purpose of the present invention, with respect to the above-mentioned embodiments, the shape, material, quantity, and other In the detailed composition, technicians can add various deformations.

Therefore, the descriptions that limit the shape, material, etc., disclosed in the above description are exemplified for easy understanding of the present invention, and do not limit the content of the present invention. Descriptions indicated by the names of some or all of the limited members are included in the present invention.

Industrial Utilization Possibility

According to the work conveying device of the press machine of the present invention, a large drive mechanism is not required, and the structure can be simplified. In addition, since the entire workpiece transfer device is arranged on the movable table, it is very easy to replace the mold. Therefore, it can be applied to press machines and the like that handle various molds.

Claims (16)

1. the Work carrying device of a press is characterized in that, possesses:

Be disposed at the work transporting direction both sides of travelling table framework,

The a pair of rod that disposes abreast with described work transporting direction,

The charging carrier that supports by described rod,

The charging driving mechanism of being located on the described rod and described charging carrier being driven along the work transporting direction,

Be located on the described framework and with described a pair of rod along the rising direction drive and the rising driving mechanism that makes it to move up and down,

The clamping driving mechanism of being located on the described framework and described a pair of rod being driven along the clamping direction with work transporting direction quadrature,

Be located on the described charging carrier disassembled and assembled freely and keep the workpiece of workpiece to keep instrument.

2. the Work carrying device of press according to claim 1 is characterized in that, described charging driving mechanism possesses linear motor.

3. the Work carrying device of press according to claim 1 is characterized in that, described charging driving mechanism possesses servo motor.

4. according to the Work carrying device of any described press in the claim 1 to 3, it is characterized in that on described charging carrier, the workpiece that is provided with a plurality of operation amounts keeps instrument disassembled and assembled freely.

5. according to the Work carrying device of any described press in the claim 1 to 4, it is characterized in that the mover bar that described a pair of rod possesses the hold-down bars that supported by described rising driving mechanism or described clamping driving mechanism and can take off from this hold-down bars.

6. the Work carrying device of a press is characterized in that, possesses:

By the frame supported of the work transporting direction both sides that are disposed at travelling table and by a pair of rod that disposes abreast with described work transporting direction,

The charging carrier that supports by described rod,

The charging driving mechanism of being located on the described rod and described charging carrier being driven along the work transporting direction,

The pedestal that supports by described charging carrier,

Be located on the described charging carrier and with described pedestal along the rising direction drive and the rising driving mechanism that makes it to move up and down,

Be located on the described pedestal disassembled and assembled freely and keep the workpiece of workpiece to keep instrument.

7. the Work carrying device of press according to claim 6 is characterized in that, possesses the clamping driving mechanism of being located on the described charging carrier and described pedestal being driven along the clamping direction with work transporting direction quadrature.

8. according to the Work carrying device of claim 6 or 7 described press, it is characterized in that at least 1 in the middle of described charging driving mechanism and the described rising driving mechanism possesses linear motor.

9. the Work carrying device of press according to claim 7 is characterized in that, described clamping driving mechanism possesses linear motor.

10. according to the Work carrying device of claim 6 or 7 described press, it is characterized in that at least 1 in the middle of described charging driving mechanism and the described rising driving mechanism possesses servo motor.

11. the Work carrying device of press according to claim 7 is characterized in that, described clamping driving mechanism possesses servo motor.

12. the Work carrying device according to any described press in the claim 6 to 11 is characterized in that, on described pedestal, the described workpiece that is provided with a plurality of operation amounts keeps instrument disassembled and assembled freely.

13. the Work carrying device according to any described press in the claim 6 to 12 is characterized in that, possesses the rod interval adjusting device at the interval of adjusting described a pair of rod.

14. the Work carrying device according to any described press in the claim 6 to 13 is characterized in that, described a pair of rod can be constituted from described framework with taking off.

15. the Work carrying device according to any described press in the claim 1 to 14 is characterized in that, on described rod, is supported with a plurality of described charging carriers, each described charging carrier can be moved control ground individually and be constituted.

16. the Work carrying device according to any described press in the claim 1 to 14 is characterized in that, on described rod, is supported with a plurality of described charging carriers, adjacent described charging carrier is linked by connect mechanism.

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