JP2009280327A - Feed device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inhibit occurrence of wrinkle-like floating when feeding sheet material. <P>SOLUTION: A roll feeder 40 feeding metallic coil material C wound in a roll shape is equipped with floating mechanisms 46, 56 which engage with roll bodies 45, 55 in rotation directions of the roll bodies 45, 55 catching the coil material C to transmit rotary drive force of a stepping motor 59 to the roll bodies 45, 55 and are ball-spline-fitted in axial directions to allow slide of the roll bodies 45, 55. With this, the coil material C, when being guided, can slide in the axial directions together with the roll bodies 45, 55 so that distortion between portions guided and those caught by the roll bodies 45, 55 can be reduced. Occurrence of wrinkle-like floating when feeding the coil material C can be therefore inhibited. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a feeding device that feeds a metal sheet material that is wound into a roll while guiding the sheet.

Conventionally, a steel strip is mounted by a pinch roll that is mounted on a shearing machine that shears a steel strip wound in a roll shape into a rectangular steel strip sheet of a predetermined length with a drum shear, and sandwiches the upper and lower surfaces of the steel strip with a roll. Has been proposed (for example, see Patent Document 1).
Japanese Patent Application Laid-Open No. 5-116021

  By the way, in such a feeding device, when the steel strip itself has a shape defect such as bending or twisting in the width direction and uneven thickness in the width direction, the posture is not stable when feeding, and it is left and right with respect to the feeding direction. May not be sent straight. At this time, it is conceivable to guide the steel strip by a side guide that sandwiches the steel strip from both sides or a stopper that abuts against the end face, but when the steel strip is pinched by a pinch roll like the above-described feeding device, The steel strip is restrained at that portion, and distortion occurs between the guided portion and the sandwiched portion, and wrinkle-like lifting may occur in the steel strip. Steel strip guides are often used to provide a reference for shearing, but when wrinkle-like lifting occurs, unstable shearing occurs, resulting in problems such as reduced shearing accuracy.

  The main purpose of the feeding device of the present invention is to suppress the occurrence of wrinkle-like lifting when a sheet material is fed.

  The feeding device of the present invention employs the following means in order to achieve the main object described above.

The feeding device of the present invention is
A feeding device for feeding a metal sheet material wound in a roll shape while guiding it,
A feed roller for feeding the sheet material by rotating the sheet material sandwiched from above and below,
A motor that generates rotational driving force;
A floating mechanism configured to mesh with the feed roller to transmit the rotational driving force of the motor with respect to the rotation direction of the feed roller and to slide the feed roller with respect to the axial direction of the feed roller; It is a summary to provide.

  In the feeding device of the present invention, the sheet material is rotated with the sheet material sandwiched from the upper and lower surfaces, and the rotation direction of the feeding roller that feeds the sheet material meshes with the feeding roller to transmit the rotational driving force of the motor and the feeding roller. A floating mechanism is provided so that the feed roller can slide in the axial direction. As a result, the sheet material can slide in the axial direction together with the feed roller when being guided, so that distortion generated between the guided portion and the portion sandwiched between the feed rollers can be reduced. As a result, it is possible to suppress the occurrence of wrinkle-like lifting when the sheet material is fed.

  In such a feeding device of the present invention, the floating mechanism is provided with urging means for urging both side surfaces of the feeding roller so as to return the feeding roller to the initial position when the feeding roller does not sandwich the sheet material. It can also be. In this way, the feed roller can be returned to the initial position with a simple configuration, and therefore distortion caused by the fact that the feed roller cannot slide any more when reaching the limit position where the feed roller can slide can be prevented.

  In the feeding device according to the present invention, the feeding roller includes a hollow roll body and a roll shaft inserted into the roll body, and the floating mechanism includes an inner peripheral surface of the roll body and the roll shaft. Rollable balls are arranged in spline grooves respectively formed on the outer peripheral surface, and the roll main body and the roll shaft can be connected by a ball spline. In this way, it is possible to smoothly slide in the axial direction while reliably transmitting the rotational driving force in the rotational direction.

  Furthermore, in the feeding device of the present invention, the feeding roller may be formed in a barrel shape having a larger outer diameter at the center than at both ends. When a cylindrical feed roller having a uniform outer diameter is used, if the thickness of the sheet material in the width direction is not uniform, a difference occurs in the axial direction in the contact area between the sheet material and the feed roller, and the sheet material is fed straight. However, the distortion caused by the guide tends to increase, but the distortion can be reduced because only the central portion is sandwiched and can be sent relatively straight.

  In the feeding device of the present invention, the sheet material may be used for manufacturing a ring of a belt type CVT in which a belt is composed of an element and a ring. Rings used in belt-type CVTs are required to have a high level of quality and are not allowed to have very small surface flaws. However, by preventing the occurrence of wrinkle-like lifting, they can be used with a feed roller or other feed equipment. Since contact wrinkles and the like can be prevented, the significance of applying the present invention is great.

  Further, in the feeding device of the present invention, the feeding device may be mounted on a cutting device that feeds a metal sheet material wound in a roll shape and cuts the sheet material at a predetermined length. In such a cutting apparatus, it is necessary to guide the sheet material in order to obtain a reference at the time of cutting, and the significance of applying the present invention is great. In particular, in the manufacture of a ring used in a belt-type CVT, since the cut surfaces are bent and welded to each other after cutting, the parallelism between the cut surfaces of the cut sheet material or the cut surfaces and the side surfaces. Therefore, the present invention is of great significance because a sheet material guide is indispensable.

  Next, the best mode for carrying out the present invention will be described using examples.

  FIG. 1 is a configuration diagram showing an outline of the configuration of a cutting device 20 equipped with a feeding device as an embodiment of the present invention, FIG. 2 is a top view of the cutting device 20 of FIG. 1, and FIG. 1 is a cross-sectional view showing an AA cross section of the roll feeder 40 of FIG. 1, and FIG. 4 is an enlarged view of rolls 43 and 53 of the roll feeder 40. The cutting device 20 of the embodiment sends out a coil material C in which a metal sheet used for manufacturing a belt-type CVT ring composed of an element and a ring is wound into a roll shape, for example, at every predetermined length. It is configured as a cutting device. As shown in FIG. 1, the cutting device 20 includes an uncoiler 30 that feeds the coil material C, a roll feeder 40 that feeds the coil material C that is fed between rolls 43 and 53 that are arranged above and below, and a roll feeder 40. A shear 60 that cuts the coil material C fed by the cutting blade 62 disposed above and below by the down-cut method, and a guide 80 that guides the coil material C that is disposed downstream of the cutting blade 62 of the shear 60 and fed. , An operation panel 90 including various button switches such as a power button switch 91 for turning on / off the power, and a main controller 100 for controlling the entire apparatus. The feeding device corresponds to the roll feeder 40.

  As shown in FIG. 1, the uncoiler 30 is connected to a rotating shaft of a stepping motor (not shown) and is expanded so as to contact the inner peripheral surface of the coil material C by a hydraulic cylinder (not shown) to rotate the coil material C. 32 and the outer diameter of the coil material C, which gradually decreases as the coil material C is fed out, is pressed in the radial direction of the coil material C by an air cylinder (not shown) so as to contact the outer peripheral surface of the coil material C. A plurality of presser rollers 34 that rotate in accordance with the rotation and a loop guide 36 that guides the coil material C that is formed in a substantially arc shape and is fed out from below.

  As shown in FIGS. 1 and 3, the roll feeder 40 includes a roll frame 42 that moves up and down so as to draw an arc around a support shaft 42a by driving an air cylinder 41 attached above the frame 40a. An upper roll 43 that is rotatably attached to the frame 42 via a bearing and interlocked with the roll frame 42, a lower roll 53 that is rotatably attached to the main body frame 40a via a bearing, and a lower roll 53 and a coupling 59a. And a stepping motor 59 that rotates and drives the lower roll 53. When the upper roll 43 is positioned at the lower end by driving the air cylinder 41, the upper roll 43 and the lower roll 53 are coiled by the pressing force of the air cylinder 41. When the material C is nipped and fed and the upper roll 43 is positioned at the upper end, To release the holding of the sealing material C. The upper roll 43 includes a shaft 44 in which a spline groove is formed in an axial direction in a substantially central portion, a roll body 45 attached to the shaft 44 through a floating mechanism 46 so as to be slidable in the axial direction, and the shaft 44 in FIG. And a sprocket 48 attached to the right end. Since the lower roll 53 has the same configuration as the upper roll 43, the description thereof is omitted. The description of the floating mechanisms 46 and 56 will be described later. As shown in FIG. 4, the roll main bodies 45 and 55 are subjected to processing (so-called crown processing) such that the outer diameter of the central portion is slightly larger (about 3/100 mm) than the outer diameter of both ends. It is formed in a barrel shape whose diameter gradually increases from both ends toward the center. The sprocket 48 and the sprocket 58 mesh when the upper roll 43 is positioned at the lower end by driving the air cylinder 41 to transmit the driving force of the stepping motor 59 to the upper roll 43, and the upper roll 43 is rotated in the rotational direction of the lower roll 53. And can be rotated in the opposite direction. For this reason, when the upper roll 43 is positioned at the lower end, the coil material C can be sandwiched and sent to the shear 60 side. When the upper roll 43 is positioned at the upper end, the meshing between the sprocket 48 and the sprocket 58 is released, and the driving force is not transmitted to the upper roll 43. In addition, the relationship between the rotation amount of the stepping motor 59 and the feed amount of the coil material C by the roll feeder 40 accompanying the rotation is grasped in advance and stored in the ROM 104. A corresponding required rotation amount is output from the main controller 100 to the stepping motor 59 as a drive signal.

  Here, the floating mechanisms 46 and 56 will be described. Since the floating mechanisms 46 and 56 have the same configuration, the floating mechanism 46 will be described, and the description of the floating mechanism 56 will be omitted. The floating mechanism 46 sandwiches the roll body 45 between a plurality of balls 46a disposed in a spline groove formed in the shaft 44, a cylindrical member 46b holding the balls 46a and having the roll body 45 fixed to the outer periphery thereof, and the roll body 45. A spring receiver 46c attached to the shaft 44, and a spring 46d provided between the roll body 45 and the spring receiver 46c for urging the roll body 45 toward the center of the shaft 44, and by ball spline fitting. The roll body 45 can be rotated integrally with the shaft 44 and the roll body 45 can be slid in the axial direction with respect to the shaft 44. As a result, the coil material C can slide in the width direction (the axial direction of the roll main body 45) even when being held and fed by the roll feeder 40. The spring 46d has the same spring constant on the left and right, and in the initial state where the coil material C is not sandwiched, the biasing force fl acting on the roll body 45 by the spring 46d provided on the left side of the roll body 45 is used. The spring 46d provided on the right side of the roll main body 45 balances the urging force fr acting on the roll main body 45, so that the roll main body 45 can be held at an initial position substantially in the center in the drawing. When the holding of the coil material C by the roll feeder 40 is released, the roll body 45 returns to the initial position by the urging force of the spring 46d.

  As shown in FIG. 1, the shear 60 is configured as a crank-type shear that cuts by a down-cut method, and faces the upper blade 62 a and a shear body 64 that is attached with an upper blade 62 a and stands by at the upper end in the initial state. The lower blade 62b is installed, and the coil material C is sheared by the upper blade 62a and the lower blade 62b by lowering the shear body 64 along the frame 60a by driving a motor and a crank mechanism (not shown). This motor is rotationally driven by the drive signal from the main controller 100 so that the shear body 64 performs a reciprocating up and down operation. Further, the cut sheet is unloaded by the unloading roll 25 provided on the downstream side of the shear 60 and driven by a motor (not shown) and moves on the free roller 26 attached to the unloading table 24 by its own weight. It stops in contact with the carry-out stopper 27 provided at the tip.

  As shown in FIG. 2, the guide 80 is disposed on the downstream side of the cutting blade 62 of the crank shear 60 (the lower blade 62b is shown in the figure), and is paired so as to sandwich the coil material C from both sides. Two sets of guides, that is, a set of guides 82 and 83 and a set of guides 84 and 85 are provided. Here, the spacing in the feed direction of the coil material C between the guides 82 and 83 and the guides 84 and 85 is substantially perpendicular to the cutting blade 62 on the side surface of the coil material C even when the coil material C is bent in the width direction. The distance is such that the guide can be kept at a distance. The guides 82 to 85 include air cylinders 82a to 85a as actuators, and rollers 82b to 85b that are rotatably attached to the tips of rods of the air cylinders 82a to 85a via a roller frame (not shown), The guides 82 and 84 arranged on the right side (lower side in the figure) with respect to the feeding direction of the coil material C are provided with positioning stoppers 82c and 84c and positioning stoppers 82c and 84c from the rods of the air cylinders 82a and 84a. And projecting portions 82d and 84d projecting in the formed direction. In addition, about the component of the guide, only the guide 84 was attached | subjected the code | symbol in the figure. Each of the guides 82 to 85 of the guide 80 configured in this way is slid in the direction of contact with the coil material C in response to a drive signal from the main controller 100 to the air cylinders 82a to 85a. The guide of the coil material C is released by sliding in a direction away from the coil material C. When guiding the coil material C, the guides 82 and 84 stop at the positions where the projecting portions 82d and 84d abut against the positioning stoppers 82c and 84c, and the guides 83 and 85 have the rollers 83b and 85b contact the coil material C. Stop at the point of contact. At this time, as described above, the roll feeder 40 includes the floating mechanisms 46 and 56 and the roll main bodies 45 and 55 slide in the axial direction, so that the coil material C can be slid in the width direction even when being fed. It is possible to guide the side surface of the material C so as to approach the feeding direction.

  As shown in FIG. 1, the operation panel 90 includes a power button switch 91 for turning on / off the power, a start button switch 92 for instructing the start of cutting during the automatic mode for automatically operating the cutting device 20, and the cutting end during the automatic mode. A stop button switch 93 for instructing, various setting switches 94 for performing various settings for cutting, a mode selection switch 95 for switching whether the cutting device 20 is set to an automatic mode or a manual mode that can be manually operated by an operator, There are various operation button switches for manual mode, etc., and an operator's instruction can be input to the main controller 100 via the internal communication interface 108.

  The main controller 100 is configured as a microprocessor centered on the CPU 102, and has a ROM 104 that stores various processing programs, a RAM 106 that temporarily stores various data, and an internal that enables communication with the operation panel 90. The communication interface 108 is provided, and these are connected so that signals can be exchanged with each other. The main controller 100 inputs an operation signal generated in response to an operation on the operation panel 90. Further, a drive signal corresponding to the feed amount of the coil material C is output to the stepping motor 59 of the roll feeder 40, a drive signal is output to the shear 60, and a drive signal is output to the unloading roll 25. Further, a drive signal is output to the air cylinder 41 of the roll feeder 40 to move the upper roll 43 up and down, or a drive signal is output to the air cylinders 82a to 85a of the guide 80 to guide the coil material C and guides of the coil material C by each guide. And release. It is assumed that when a drive signal is output to the stepping motor 59 of the roll feeder 40, the drive signal is also output to the stepping motor of the uncoiler 30 so as to perform the necessary rotation accompanying the feeding of the coil material C.

  Next, operation | movement of the cutting device 20 of this embodiment comprised in this way is demonstrated. FIG. 5 is a flowchart illustrating an example of an automatic cutting processing routine executed by the main controller 100. This process is executed when the coil material C is set, the mode select switch 95 is set to the automatic mode, and the start button switch 92 is pressed. Normally, when the coil material C is set, the setup operation in the manual mode is performed (for example, the cutting operation of the leading end portion of the coil material C which cannot be used with a tight winding rod), so the start button switch 92 is pressed. When this is done, the tip of the coil material C is in a position on the lower blade 62b.

  When the automatic cutting processing routine is executed, the CPU 102 of the main controller 100 first drives and controls the air cylinder 41 so that the upper roll 43 of the roll feeder 40 descends, and the coil material C is clamped by the roll feeder 40 ( Step S100). At this time, the roll main bodies 45 and 55 sandwich the upper and lower surfaces of the coil material C at the initial position. Next, the air cylinders 82a to 85a of the guide 80 are driven and controlled, the coil material C is guided by the guide 80 (step S110), the roll feeder 40 is driven and controlled, and the coil material C is fed by the feed amount L ( Step S120). Here, the feed amount L is determined as a feed amount when the coil material C is cut at a predetermined length (for example, 300 mm). When the coil material C is sent, the shear 60 is driven and controlled to cut the coil material C (step S130). Subsequently, the air cylinder 41 is driven and controlled so that the upper roll 43 of the roll feeder 40 is raised, and the clamping of the coil material C of the roll feeder 40 is released (step S140). The pinch is released when the axial movement of the roll main bodies 45 and 55 reaches the limit position due to the bending of the coil material C in the width direction or the like. Because. Then, the guide of the guide 80 is released (step S150), and the cut sheet S is carried out by drivingly controlling the carry-out roll 25 (step S160), and then the processing after step S100 is repeated again. . This process is repeated until the stop button switch 93 is pressed by the operator.

  Here, a case where the coil material C having a shape defect such as bending or twisting in the width direction and uneven thickness in the width direction is fed and cut will be described. As an example, bend in the width direction and non-uniform thickness in the width direction. First, the bending will be described. This bending is caused by rolling with a bow-like bending in the width direction in a rolling process in which a steel piece as a material is rolled to a predetermined thickness and wound into a roll to produce a coil material C. is there. Since the bending once generated is not completely eliminated, when the coil material C is sent, it is sent with the bending in the width direction. FIG. 6 is an explanatory diagram showing a state in which the bent coil material C is fed in the above-described automatic cutting processing routine. FIG. 6A shows a state before the coil material C is sent. As illustrated, the side surface of the coil material C is bent to the right (downward in the figure) with respect to the feeding direction due to the bending. When the coil material C starts to be fed while being guided on both sides by the guide 80 (see FIG. 6B), the coil material C is fed in the feeding direction and slides upward in the drawing. At this time, since the roll main bodies 45 and 55 of the roll feeder 40 also slide upward while sandwiching and feeding the coil material C, distortion occurs between the portion guided by the guide 80 and the portion sandwiched by the roll feeder 40. Will not occur. The dotted line in the figure indicates the cutting position. While the coil material C is fed to the feed amount L (see FIG. 6C), the portion of the coil material C sandwiched between the roll feeders 40 slides further upward due to the influence of bending. Even when the roll bodies 45 and 55 slide upward, the distortion can be reduced. Thus, since the roll feeder 40 is provided with the floating mechanisms 46 and 56, when correcting the attitude | position of the coil material C, the distortion produced between the parts guided by the guide 80 can be made small. Moreover, sectional drawing of the roll feeder 40 when the coil material C is sent is shown in FIG. FIG. 7A shows an initial state, and FIG. 7B shows a state when the coil material C is fed by the feed amount L. FIG. As shown in the figure, the coil material C slides to the left side in the drawing and the roll main bodies 45 and 55 slide to the left side in the drawing as compared with the initial state, so that the springs 46d and 56d arranged on the left side in the drawing are contracted. The urging force fl is increased, and the springs 46d and 56d arranged on the right side in the drawing are extended, and the urging force fr is decreased. For this reason, when the holding of the roll feeder 40 is released after the coil material C is fed by the feed amount L and cut, the roll main bodies 45 and 55 are moved rightward in FIG. 7 by the urging force fl and returned to the initial position. It is. Thus, since the roll main bodies 45 and 55 are returned to the initial positions after cutting, it is possible to prevent the occurrence of distortion caused by the fact that the roll bodies 45 and 55 cannot slide any more when reaching the slidable limit position. Here, as a comparative example, a description will be given of a case where the coil material C having a bend is fed by a cutting device equipped with such a roll feeder that does not include the floating mechanisms 46 and 56. FIG. 8 is an explanatory view showing a state in which the coil material C having a bend is fed by the cutting device 120 of the comparative example. In this cutting device 120, since the floating mechanism is not provided, the roll main bodies 145 and 155 (not shown) cannot slide in the axial direction, and when the coil material C is guided by the guide 80, the coil material C slides smoothly. I can't. For this reason, as shown in the drawing, distortion occurs between the portion guided by the guide 80 and the portion sandwiched between the roll main bodies 145 and 155, and wrinkle-like lifting occurs. This floating causes problems such as contact flaws between the coil material C and the roll main bodies 145 and 155, and the coil material C moving during cutting, resulting in unstable cutting. In the present embodiment, as described above, the distortion does not occur and the wrinkle-like lifting does not occur as in the comparative example, so that such a problem can be prevented from occurring.

  Next, the case where the coil material C having a non-uniform thickness in the width direction will be described in comparison with a comparative example. FIG. 9 is an explanatory view showing a state in which the coil material C is clamped by the roll feeder. FIG. 9A shows a state in which the coil material C is sandwiched between cylindrical roll bodies 245 and 255 having a uniform outer diameter as a comparative example, and FIG. 9B shows a state in which the coil material C in this embodiment is sandwiched. Show. In the comparative example, as shown in FIG. 9A, the thick part of the coil material C is mainly sandwiched between the roll bodies 245 and 255 (shown by dotted lines in the figure), and the thin part is not sandwiched. . For this reason, when the coil material C is fed, a difference occurs in the feed amount in the width direction, and the coil material C may not be fed straight in the feed direction. On the other hand, in this embodiment, the coil material C is sandwiched between the roll bodies 45 and 55 near the center (illustrated by dotted lines in the figure), so that there is a difference in feed amount in the width direction as in the comparative example. It becomes difficult and can be sent relatively straight. For this reason, when feeding the coil material C, it is possible to suppress the occurrence of bending in the width direction due to the difference in feed amount in the width direction, and the posture of the coil material C is less likely to be corrected by the guide 80. Therefore, distortion can be reduced.

  According to the cutting device 20 of the embodiment described above, the roll feeder 40 meshes with the roll main bodies 45 and 55 in the rotation direction of the roll main bodies 45 and 55 that sandwich and send the coil material C, and the stepping motor 59 Floating mechanisms 46 and 56 are provided, which transmit rotational driving force to the roll bodies 45 and 55 and are ball spline fitted so that the roll bodies 45 and 55 can slide in the axial direction. Thereby, since the coil material C can slide in the axial direction together with the roll main bodies 45 and 55 when being guided by the guide 80, the distortion between the guided portion and the portion sandwiched between the roll main bodies 45 and 55 is reduced. can do. As a result, it is possible to suppress the occurrence of wrinkle-like lifting when the coil material C is fed.

  In the cutting apparatus 20 of the embodiment, the roll main bodies 45 and 55 are formed in a barrel shape, but may be formed in a cylindrical shape having a uniform outer diameter.

  In the cutting device 20 of the embodiment, the floating mechanisms 46 and 56 are configured to attach the roll main bodies 45 and 55 to the shafts 44 and 54 by ball spline fitting. As long as it can rotate integrally with 54 and can slide the roll main bodies 45 and 55 with respect to the shafts 44 and 45 in the axial direction, it may be anything. Further, the springs 46d and 56d are arranged to return the roll main bodies 45 and 55 to the initial positions. However, the spring main bodies 45 and 55 are not limited to the springs, and any means can be used as long as the roll main bodies 45 and 55 can be returned to the initial positions. It is good also as a thing, and it is good also as a thing not provided with the structure which returns such roll main bodies 45 and 55 to an initial position.

  In the cutting apparatus 20 of the embodiment, the guide 80 is provided on the downstream side of the shear 60, but is not limited thereto, and may be provided on the upstream side, or may be provided on the upstream side and the downstream side. .

  In the cutting device 20 of the embodiment, the side surface of the coil material C is guided, but the present invention is not limited to this, and any device may be used as long as it guides the coil material C. For example, as shown in the cutting device 320 of the modification of FIG. 10, a roll feeder 40 similar to that of the present embodiment, and a liftable end face stopper 28 at a distance L from the cutting blade 62 are provided, and a coil material The end face of C may be guided by being brought into contact with the end face stopper 28. FIG. 10A shows a state before the coil material C is sent. When the coil material C is fed, a part of the end surface comes into contact with the end surface stopper 28 by bending before the feeding of the feeding amount L is completed (see FIG. 10B). When the coil material C is further fed so as to complete the feeding of the feed amount L from this state, the entire end surface of the coil material C comes into contact with the end surface stopper 28 and stops (see FIG. 10C). At this time, similarly to the above-described embodiment, the roll main bodies 45 and 55 can be slid while feeding the coil material C by the floating mechanisms 46 and 56, so that the distortion is reduced and the occurrence of wrinkle-like lifting is suppressed. it can.

  In the embodiment, the roll feeder 40 is mounted on the cutting device 20. However, the present invention is not limited to this, and the roll feeder 40 may be mounted on any device that feeds a metal material wound in a roll shape. In the cutting device 20 of the embodiment, the metal material used for the belt of the belt-type CVT is cut. However, the present invention is not limited to this, and any metal material wound in a roll shape may be cut.

  The best mode for carrying out the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Of course, it can be implemented in the form.

  The present invention can be used in the belt type CVT manufacturing industry, the coil metal processing industry, and the like.

It is a block diagram which shows the outline of a structure of the cutting device 20 as one Example of this invention. 3 is a top view of the cutting device 20. FIG. It is sectional drawing which shows the AA cross section of the roll feeder 40 of FIG. 4 is an enlarged view of rolls 43 and 53 of the roll feeder 40. FIG. It is a flowchart which shows an example of an automatic cutting process routine. It is explanatory drawing which shows a mode that the coil material C with a curve is sent. It is sectional drawing of the roll feeder 40 when the coil material C is sent. It is explanatory drawing which shows a mode that the coil material C with a curve is sent with the cutting device 120 of a comparative example. It is explanatory drawing which shows a mode that the coil material C is clamped with a roll feeder. It is explanatory drawing which shows a mode that the coil material C with a curve is sent with the cutting device 320 of a modification.

Explanation of symbols

  20, 120, 320 Cutting device, 24 unloading base, 25 unloading roll, 26 free roller, 27 unloading stopper, 28 end stopper, 30 uncoiler, 32 mandrel, 34 presser roller, 36 loop guide, 40 roll feeder, 40a frame, 41 Air cylinder, 42 Roll frame, 42a Support shaft, 43, 143 Upper roll, 44 shaft, 45, 145, 245 Roll body, 46 Floating mechanism, 46a Ball, 46b Cylindrical member, 46c Spring receiver, 46d Spring, 48 Sprocket, 53 Lower roll, 54 shaft, 55, 255 Roll body, 56 Floating mechanism, 56a Ball, 56b Cylindrical member, 56c Spring receiver, 56d Spring, 58 Sprocket, 59 Step Motor, 59a coupling, 60 shear, 60a frame, 62 cutting blade, 62a upper blade, 62b lower blade, 64 shear body, 80 guide, 82, 83, 84, 85 guide, 82a, 83a, 84a, 85a air cylinder, 82b, 83b, 84b, 85b Roller, 82c, 84c Positioning stopper, 82d, 84d Projection, 90 Operation panel, 91 Power button switch, 92 Start button switch, 93 Stop button switch, 94 Various setting switches, 95 Mode select switch , 100 main controller, 102 CPU, 104 ROM, 106 RAM, 108 interface.

Claims (6)

A feeding device for feeding a metal sheet material wound in a roll shape while guiding it,
A feed roller for feeding the sheet material by rotating the sheet material sandwiched from above and below,
A motor that generates rotational driving force;
A floating mechanism configured to mesh with the feed roller to transmit the rotational driving force of the motor with respect to the rotation direction of the feed roller and to slide the feed roller with respect to the axial direction of the feed roller; A feeding device comprising:   2. The feeding device according to claim 1, wherein the floating mechanism is provided with urging means for urging both side surfaces of the feeding roller so as to return the feeding roller to an initial position when the feeding roller does not sandwich the sheet material. . The feeding device according to claim 1 or 2,
The feed roller is composed of a hollow roll body and a roll shaft inserted into the roll body,
The floating mechanism has rollable balls arranged in spline grooves respectively formed on an inner peripheral surface of the roll main body and an outer peripheral surface of the roll shaft, and connects the roll main body and the roll shaft to a ball spline. Feeder that is a mechanism.   The feeding device according to any one of claims 1 to 3, wherein the feeding roller is formed in a barrel shape having a larger outer diameter at the center than at both ends.   5. The feeding device according to claim 1, wherein the sheet material is used for manufacturing a ring of a belt-type CVT in which a belt includes an element and a ring.   The feeding device according to any one of claims 1 to 5, wherein the feeding device is mounted on a cutting device that feeds a metal sheet wound in a roll shape and cuts the sheet material at predetermined lengths.

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