WO2011158390A1 - Two crimped wire manufacturing device, two crimped wire manufacturing method, and two wire feeding device - Google Patents

Abstract

Provided is a two terminal-crimped wire manufacturing device having an advantage of being able to accurately set the length of each wire and other advantages while suppressing the increase in size and weight of the whole device and the increase in price of the device as much as possible. The two terminal-crimped wire manufacturing device (1) includes a wire feeding device (100), a cutting and stripping device (200), a tail clamping device (300), crimping devices (400, 500), and a wire discharging device (600). The wire feeding device (100) has two sets of wire feeding rollers driven by different motors. Therefore, each wire can be fed only by a precise length. In addition, it is possible to discharge two wires having different lengths by changing the operation amount of each motor. Accordingly, it is also possible to provide, as a set, two terminal-crimped wires having different lengths and types of diameters and jackets.

Description

Two-wire crimped wire manufacturing device, two-wire crimped wire manufacturing method, two-wire wire feeder

The present invention relates to an apparatus and a method for manufacturing a terminal crimped electric wire in which a terminal is crimped to both ends of a stripped electric wire. In particular, the present invention relates to an apparatus and a method for manufacturing two terminal crimped electric wires in parallel with one machine.

The terminal crimped electric wire is manufactured through processes such as feeding the electric wire from a bundle of electric wires wound in a roll shape, peeling the coating on the tip of the electric wire, crimping the terminal to the electric wire tip, and cutting the electric wire. In these processes, the electric wires are generally processed one by one. That is, one terminal crimping electric wire is manufactured by one process.

For the purpose of improving productivity, an apparatus (two-wire type) that manufactures two terminal crimped wires in a single process has been proposed (see, for example, Patent Document 1), but has been widely used in the market. There is currently no such thing. The reason is as follows. For example, in the case of the apparatus proposed in Patent Document 1, two electric wires are fed by a common roller. In this case, the lengths of the two wires to be fed are basically the same. However, depending on the variation in the outer diameter of the wires and the surface condition of the coating, the length of the wires to be fed may vary, resulting in the length of the product. The accuracy may decrease or it may become a defective product. Moreover, in this system, since the standard lengths of the fed wires are basically the same, only terminal crimped wires of the same type (length) can be manufactured. Depending on the product, two terminal crimped wires with different lengths and types (outer diameter and type of covering) may be provided as a set. In this case, even in the two-wire system, it is preferable that electric wires having different lengths can be fed simultaneously, or feeding reflecting the difference in outer diameter and type of coating is performed.

Also, in the terminal crimped wire manufacturing apparatus, not limited to the two-wire type, the tip of the wire fed out from the bundle of wires wound in a roll shape may be bent due to a bend in a rolled state. As a result, it becomes impossible to peel off the coating at the tip or to crimp the terminal well, resulting in a defective product. Thus, an apparatus provided with means for determining whether the terminal crimping state is good or not has been proposed (see, for example, Patent Document 2). However, in the case of this apparatus, defective products can be eliminated, but it cannot be a fundamental measure against producing defective products.

JP-A-1-276513 JP-A-61-133844

The present invention has been made in view of the above points, and is an apparatus for manufacturing two terminal crimped electric wires in parallel on a single machine, which increases the size of the entire apparatus, increases the apparatus weight, and the apparatus. An object of the present invention is to provide a two-wire terminal crimped wire manufacturing apparatus having advantages such as being able to accurately set the wire length of each wire while suppressing an increase in price as much as possible.

The two-wire terminal crimped wire manufacturing apparatus of the present invention includes a wire feeding device that feeds an electric wire, a top peeling device that peels the coating on the tip of the wire, and a terminal on the peeled tip. A top terminal crimping device for crimping, a wire cutting device for cutting a wire whose terminal is crimped at the tip to an arbitrary length, a tail clamp device for gripping the rear end of the cut wire, and a cut wire A tail peeling device that peels off the coating of the rear end portion, a tail terminal crimping device that crimps a terminal to the peeled rear end portion, and a wire dispensing device with terminals crimped at both ends. The electric wire feeder has two sets of rollers for sending electric wires, and the two sets of rollers are driven by separate motors.

According to the present invention, in a two-wire type terminal crimped wire manufacturing apparatus, two wires are sent out by separate feeding mechanisms (rollers and motors). As the motor, it is preferable to use a servo motor that is controlled in a closed loop. Since this motor feeds back the rotation angle signal measured by the built-in encoder to the control unit and controls the operation amount so as to reach the target movement amount, the movement amount can be set accurately. Accordingly, each of the electric wires can be fed by an accurate length.
Further, each motor can be provided with a sensor (encoder or the like) for detecting the length of the electric wire to be sent (full closed control) separately from the built-in encoder. In this case, even when the electric wire slips, the electric wire having an accurate length can be sent.

Furthermore, it is possible to send out two wires of different lengths by changing the operation amount of each motor. Therefore, two terminal crimped electric wires having different lengths and types (outer diameter and type of covering) can be provided as a set.

In the present invention, the top peeling device and the tail peeling device each have two sets of peeling tools for peeling two parallel wires, and the wire cutting device is parallel. A pair of cutting blades for cutting two wires, and the top terminal crimping device and the tail terminal crimping device each process two wires one by one at different times. It is preferable to have a terminal crimping machine.

The crimping machine is a heavy and expensive part of the terminal crimping wire manufacturing equipment. A general crimping machine crimps one terminal to the end of one electric wire. If there are two sets of this crimping machine for each of the top terminal crimping and the tail terminal crimping, the price of the apparatus becomes nearly double. However, the crimping machine remains in one set for top terminal crimping and tail terminal crimping, and the specifications for two other wire feeding devices, peeling devices, and wire cutting devices (two wires at the same time) Clamping, peeling, or cutting) For crimping equipment, if the two wires are processed one by one at a time, the equipment price is 1.2 to 1.5 times, and the unit Production per hour can be increased from 1.7 times to 1.8 times. That is, the apparatus cost per manufacturing electric wire can be significantly reduced. In addition, the installation space for the device is not doubled because it is a two-wire system (almost no increase or about 1.1 times).

Further, if the electric wire cutting device, the top peeling device, and the tail peeling device are configured to be driven by a single drive source, the device can be reduced in size and space can be saved. Furthermore, it is preferable to perform the top peeling and the tail peeling at the same timing.

In the present invention, it is more preferable that the electric wire feeding device also serves as an electric wire clamp of the top peeling device.

According to the present invention, the wire feeding device combines the work of feeding and retracting the wire drawn out from the wire bundle by a predetermined length and the work of clamping the tip of the wire, thereby reducing the size and space. Is possible.

In the present invention, the electric wire feeder can be driven by a single motor instead of driving the two sets of rollers by separate motors.

In the present invention, it is further preferable that the payout device has two sets of clamp portions arranged in parallel, and the clamp portions are opened and closed independently.

According to the present invention, the two electric wires can be released independently from the clamp portion. Therefore, when one is a good product and the other is a defective product, the good product and the defective product can be paid out to separate product chutes.

The method for manufacturing a two-wire terminal crimped electric wire of the present invention includes a step of feeding an electric wire, a top peeling step of peeling off a coating on the tip of the supplied wire, and a terminal on the peeled tip. A top terminal crimping step for crimping, an electric wire cutting step for cutting an electric wire having a terminal crimped on the tip to an arbitrary length, and a tail peeling step for peeling the coating on the rear end of the cut electric wire, A method for producing a crimped terminal wire, comprising: a tail terminal crimping step for crimping a terminal to a peeled rear end portion; and a payout process for a wire with a terminal crimped on both ends. Using a terminal crimped wire manufacturing apparatus, in at least one or more of the above steps, the two wires are processed while being sent in parallel.

The electric wire feeder of the present invention is an electric wire feeder for feeding electric wires, and has two sets of rollers for feeding electric wires, and the two sets of rollers are driven by different motors. .
Further, each motor can be provided with a sensor (encoder or the like) for detecting the length of the electric wire to be sent (full closed control) separately from the encoder built in the motor. In this case, even when the electric wire slips, the electric wire having an accurate length can be sent.

In the present invention, the two sets of rollers may be driven by a single motor instead of being driven by separate motors.

A terminal crimping method according to another aspect of the present invention is a method of crimping a terminal to an end portion of a stripped electric wire, wherein the electric wire is clamped between a crimper and an anvil that are terminal crimping tools. When the end of the electric wire is fed into the wire, the position and / or bending shape of the end of the electric wire is detected by image photographing / processing, and the clamp is adjusted in position and / or tilt.

According to the present invention, the terminal crimping operation is performed after determining the attitude of the end of the wire and adjusting the position and inclination of the clamp so as to correct the abnormality if the attitude is abnormal. For this reason, defective products are not produced during the terminal crimping operation.

A terminal crimping device according to another aspect of the present invention is a device for crimping a terminal to an end portion of a stripped electric wire, between the crimper and an anvil that is a terminal crimping tool by clamping the electric wire. A clamping device that feeds the end of the electric wire into the wire, position adjusting means for adjusting the height and left-right position of the clamping device, means for imaging the end of the electric wire clamped by the clamping device, and the imaging means Means for determining whether or not the wire end portion is in a clamping posture from the image of the end portion of the electric wire photographed in step S, and based on the determination of the image determining portion, A terminal crimping device, wherein the height and the horizontal position of the clamping device are adjusted so that the portion has a normal clamping posture.

In the present invention, it is preferable to further include an inclination adjusting means for adjusting the inclination of the clamping device.

As is clear from the above description, the two-wire terminal crimped wire manufacturing apparatus of the present invention has the following effects.
(1) When the two pairs of upper and lower roller pairs are driven by independent motors in the electric wire feeder, each electric wire can be fed by an accurate length. Further, the feeding length of the two electric wires can be changed.
(2) When two wires are cut and peeled at the same time, and the crimping operation is performed one by one, the production volume per unit time is simply 2 by using one crimping machine. Although the price cannot be doubled, the price of the equipment can be 1.2 to 1.5 times, and the production amount per unit time can be 1.7 to 1.8 times. That is, the apparatus cost per manufacturing electric wire can be significantly reduced. In addition, the installation space for the apparatus hardly increases.
(3) When the cut / strip device is driven by a single drive source, the device can be further reduced in size and space. Furthermore, if the top peeling and the tail peeling are performed at the same timing, the peeling operation is performed in one operation, which is efficient.
(4) When the dispensing device has two sets of clamp parts that can be opened and closed independently, the two electric wires can be released independently. For example, when one is a non-defective product and the other is a defective product, the non-defective product and the defective product can be paid out to separate product chutes.
(5) When the dispensing device conveys two electric wires in a parallel posture, the two electric wires do not intersect during conveyance, so that the electric wires do not get tangled and each electric wire can be conveyed to an appropriate dispensing position. .
(6) In the case where the position of the wire tip is adjusted to a normal position before crimping, the crimping operation can be performed accurately even when the wire end is curved. That is, a defective product due to the bending of the wire tip is not manufactured. Furthermore, when it has an electric wire inclination adjustment means, a more suitable crimping | compression-bonding operation can be performed.
(7) When the electric wire feeder using the upper and lower roller pairs performs the feeding operation of the electric wire and the feeding operation and the clamping operation of the electric wire, the apparatus can be reduced in size and space.

It is a top view which shows typically the whole structure of the two-wire terminal crimping electric wire manufacturing apparatus of this invention. It is a side view of an electric wire feeder. It is a disassembled perspective view of the electric wire feeder of FIG. It is a perspective view which shows the drive part of the electric wire feeder of FIG. It is a side view which shows the roller space | interval change mechanism of the electric wire feeder of FIG. It is a front view of a cut strip apparatus. FIG. 7A is a perspective view showing the shape and positional relationship of each blade of the cutting and stripping device of FIG. 6, and FIG. 7B is a side view showing the positional relationship between the cutting blade and the guide. It is a side view which shows the vacuum pipe of the cut strip apparatus of FIG. It is a side view of a tail clamp device. FIG. 10A is a front view of the clamp portion of the tail clamp device of FIG. 9, and FIG. 10B is a front view illustrating the opening / closing operation of the clamp portion. FIG. 10 is a perspective view of a clamp unit and a clamp bracket of the tail clamp device of FIG. 9. FIG. 10 is an exploded perspective view of a clamp unit and a clamp bracket of the tail clamp device of FIG. 9. It is a side view which shows the positional relationship of an electric wire feeder and a tail clamp apparatus. It is a side view which shows a crimping | compression-bonding apparatus and a sink mechanism. It is a top view which shows a payout apparatus. It is a front view of the payout apparatus of FIG. FIG. 17A is a front view of the clamp unit of the dispensing device of FIG. 15, and FIG. 17B is a front view for explaining the opening / closing operation of the clamp portion. It is a flowchart of a two-wire terminal crimping electric wire manufacturing apparatus. It is a timing chart of a two-wire terminal crimping electric wire manufacturing apparatus. It is a block diagram of the two-wire terminal crimping electric wire manufacturing apparatus of the other aspect of this invention. It is a figure which shows the example of the state which the electric wire edge part curved, FIG. 21 (A) is a top view, FIG.21 (B), (C) is a side view. It is a side view which shows a part of electric wire feeder of the further another aspect of the two-wire terminal crimping electric wire manufacturing apparatus of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, with reference to FIG. 1, the whole structure of the two-wire type crimp wire manufacturing apparatus of this invention is demonstrated.
The two-wire crimped wire manufacturing apparatus 1 is cut by a wire feeding device 100 for feeding (feeding) and clamping an electric wire from a wire bundle, and a cut / strip device 200 for peeling the wire and stripping the coating. A tail clamp device 300 that clamps the rear end of the electric wire, a top terminal crimping device 400 that crimps a terminal to the tip of the electric wire clamped by the wire feeding device 100, and an electric wire that is clamped by the tail clamp device 300 A tail crimping device 500 that crimps a terminal to the rear end portion, and an electric wire dispensing device 600 with terminals crimped to both ends. The cut / strip device 200 includes a top peeling portion 220 that peels off the coating of the tip of the electric wire clamped by the electric wire feeding device 100, an electric wire cutting portion 210 that cuts the electric wire into an arbitrary length, and a tail. A tail peeler 230 that peels the covering of the rear end of the electric wire clamped by the clamp device 300. These are installed on the machine base 3.
Hereinafter, an electric wire that is cut from the electric wire bundle after being cut by the cut / strip device 200 is referred to as a cut electric wire, and an electric wire remaining in the electric wire bundle is referred to as a residual electric wire.
In the following description, the left-right direction indicates the left-right direction of the figure, and the up-down direction indicates the up-down direction of the figure.

The wire feeding device 100 and the tail clamp device 300 are arranged in series in the direction (wire feeding direction) in which the wires W1 and W2 fed out from the two wire bundles are fed, and face each other with a predetermined interval. . This position is referred to as the wire feed position P0 (also referred to as the origin), and the height is referred to as the wire feed height. In the wire feeding direction, the direction on the wire bundle side is referred to as the rear direction, and the direction on the opposite wire bundle side is referred to as the front direction or the front direction.
The wire feeding device 100 is movable in one of the directions orthogonal to the wire feeding direction (in this example, the right direction, referred to as the wire feeding device conveyance direction), and the tail clamp device 300 is in the opposite direction (in this example, It is possible to move in the left direction (referred to as the tail clamp device conveyance direction).

The cut / strip device 200 is disposed between the wire feeding device 100 and the tail clamp device 300 at the wire feeding position P0. The cut / strip device 300 includes an electric wire cutting part 210, a top peeling part 220, and a tail peeling part 230, which are arranged side by side in a direction orthogonal to the electric wire feeding direction. The wire cutting part 210 is disposed between the wire feeding device 100 and the tail clamp device 300 (referred to as a cutting position) at the wire feeding position P0. The top peeling portion 210 is disposed at a position P1 (top peeling position) that is a predetermined distance away from the wire feeding position P0 in the direction of conveying the wire feeding device, and the tail peeling portion 220 is positioned in the direction of conveying the tail clamp device. It is arranged at a position P2 (tail peeling position) that is a predetermined distance away.

The top terminal crimping apparatus 400 is disposed at a position P3 (top terminal crimping position) that is a predetermined distance away from the top peeling position P1 in the direction of movement of the wire feeder.
The tail terminal crimping apparatus 500 is disposed at a position P4 (tail terminal crimping position) that is a predetermined distance away from the tail peeling position P2 in the tail clamp apparatus transport direction.
The dispensing device 600 is disposed outside the tail terminal crimping position 500.

Next, the wire feeder 100 will be described with reference to FIGS.
The electric wire feeder 100 arranges and clamps the tip portions of electric wires respectively fed out from two electric wire bundles in parallel with the electric wire feeding direction, and sends out these electric wires along the electric wire feeding direction. As shown in FIG. 2, the apparatus 100 mainly includes a roller unit 110 and a table 160 on which the roller unit 110 is supported so as to be movable up and down. Furthermore, an electric wire feeding device transport mechanism 180 that transports the table 160 in the device transport direction is provided.

The roller unit 110 includes left and right roller pairs 120L and 120R (see FIG. 3) including upper and lower rollers 121 and 122, a motor 130 for driving each of the upper and lower roller pairs 120, and left and right roller support plates 140.

2 and 3, the left and right upper and lower roller pairs 120L and 120R are rotatably attached to the left and right roller support plates 140L and 140R, respectively. The left and right roller support plates 140 are parallel to the electric wire feeding direction and are arranged on the left and right sides of the table 160 so as to face each other. Two arms 141 and 142 extending forward are attached to the upper portion of each roller support plate 140. The base ends of the arms 141 and 142 are rotatably supported by the roller support plate 140. Further, a roller rotation shaft 143 (see FIG. 3) extending in a direction orthogonal to the wire feeding direction is rotatably supported at the tip of each arm 141, 142. As shown in FIG. 3, each roller rotation shaft 143 extends inward, and rollers 121 and 122 are attached to the tips of the rotation shaft 143.

As shown in FIG. 4, the upper and lower rollers 121 and 122 are, for example, rubber rollers having a width that is somewhat wider than the diameter of the electric wires W1 and W2. Gears 123 and 124 are fixed on the same axis of the upper and lower rollers 121 and 122. When the arms 141 are parallel, the outer peripheral surfaces of the upper and lower rollers 121 and 122 are in contact with each other, but the upper and lower gears 123 and 124 are not engaged with each other. The height of the contact surfaces of the upper and lower rollers 121 and 122 is the wire feed height H.
The interval between the upper and lower rollers 121 and 122 can be changed by turning the arms 141 and 142. The vertical roller interval changing mechanism will be described later.

The distance in the left-right direction between the upper and lower roller pairs 120 supported by the left and right roller support plates 140 (referred to as the electric wire distance) is preferably as narrow as possible. If the interval is wide, the size of each device increases and the weight increases, and the moving distance of the wire feeder 100 and the tail clamp device 300 increases.

As shown in FIG. 4, the upper and lower gears 123 and 124 are engaged with drive gears 127 and 128 that are rotatably supported by the roller support plate 140, respectively. The upper and lower drive gears 127 and 128 are arranged to mesh with each other. A pulley 129 is fixed on the same axis as the lower drive gear 128.

The motor 130 is attached to each roller support plate 140. The motor 130 is a servo motor with a built-in encoder. The motor feeds back the rotation angle signal measured by the encoder to the control unit (semi-closed control), and controls the operation amount so as to reach the target movement amount. For this reason, the movement amount can be set accurately.
Further, each motor 130 may be provided with a sensor (encoder or the like) that detects the length of the wire to be sent (full-closed control) separately from the encoder built in the motor 130. In this case, since the feed length of the electric wire is measured and the motor is controlled so that the feed length becomes a target length, even when the electric wire slips, an accurate length of the electric wire can be sent. .
Note that the left and right roller pairs 120L and 120R can be driven by a single servo motor instead of being driven by separate motors. In this case, it is preferable to provide a mechanism that prevents the electric wire from slipping.

A pulley 131 is fixed to the output shaft of the motor 130. A timing belt 133 is wound between the pulley 131 and the pulley 129 fixed to the lower drive gear 128 described above. The rotation of the motor 130 is transmitted to the pulley 129 via the timing belt 133 to rotate the lower drive gear 128, and thus the upper drive gear 127 is also rotated. The upper and lower roller gears 123 and 124 are rotated by the rotation of the upper and lower drive gears 127 and 128, and the upper and lower rollers 121 and 122 are rotated in the opposite direction. 2 and 4, when the output shaft of the motor 130 rotates in the clockwise direction, the upper roller 121 rotates in the clockwise direction and the lower roller 122 rotates in the counterclockwise direction. Electric wire is sent in. Conversely, when the output shaft of the motor 130 rotates counterclockwise, the upper roller 121 rotates counterclockwise and the lower roller 122 rotates clockwise, and the electric wire is drawn in the right direction from between both rollers 121 and 122. It is. When the motor 130 is stopped, the electric wire is sandwiched between the outer peripheral surfaces of the upper and lower rollers 121 and 122 and clamped.
As shown in FIG. 2, a nozzle 135 through which the electric wire is inserted is attached in front of the contact surfaces of the upper and lower rollers 121 and 122.

In the present invention, as described above, the upper and lower rollers 121 and 122 serve both as a wire clamping action and a wire feeding / withdrawing action. Space can be created.
Furthermore, since the two electric wires are sent out by another motor 130, the length of the electric wires to be fed can be changed by changing the operation amount of the motor 130.

The vertical roller interval changing mechanism will be described.
As shown in FIGS. 2 and 3, a rod 145 extending forward is supported between the upper and lower arms 141 and 142 of the roller support plate 140 so as to be slidable in the front-rear direction. As shown in an enlarged view in FIG. 5, link arms 147 and 148 that are rotatably connected to the central portions of the upper and lower arms 141 and 142 are connected to the front end of the rod 145. An output shaft 151 of a cylinder 150 attached to the roller support plate 140 is fixed to the rear end of the rod 145. The cylinder 150 has a dial 153 that adjusts the extension length of the output shaft 151.

As shown by the solid line in FIG. 5, when the upper and lower arms 141 and 142 are in parallel, the outer peripheral surfaces of the upper and lower rollers 121 and 122 are in contact with each other. When the output shaft 151 of the cylinder 150 is contracted, the rod 145 slides backward. Then, the upper link arm 147 rotates counterclockwise around the connection point, and the lower link arm 148 rotates clockwise. Along with this, the upper arm 141 rotates in the clockwise direction, and the lower arm 142 rotates in the counterclockwise direction. As a result, the upper and lower rollers 121 and 122 move from the wire height H by an equal distance in the vertical direction, and a gap D is opened between the rollers. This makes it easier to set the electric wire between the upper and lower rollers 121 and 122. Adjustment of the gap D when the upper and lower rollers 121 and 122 are closed is performed by turning the dial 153.

With reference to FIGS. 2 and 3 again, a method of supporting each roller support plate 140 will be described.
Each roller support plate 140 is supported by being biased upward by a spring 165 with respect to the table 160. As clearly shown in FIG. 3, a pin 155 protruding inward is fixed to the inner surface of each roller support plate 140. On the other hand, left and right side plates 161 are fixed to both side surfaces of the table 160. A spring support plate 162 protruding rearward is fixed to the inner surface of each side plate 161. The spring 165 is locked between the upper surface of the spring support plate 162 and the lower surface of the spring support pin 155. By these springs 165, each roller support plate 140 is supported by being biased upward with respect to the table 160.

The upper limit height of each roller support plate 140 biased upward by the spring 165 is set so that the height between the upper and lower rollers 121 and 122 becomes a predetermined wire feed height H. This height is regulated by a block 167 fixed to each side end face of the table 160 and a screw 157 attached to the lower end face of each roller support plate 140. A groove 167 a extending in the vertical direction is formed on the outer surface of the block 167. The screw 157 is fitted in the groove 167 a of the block 167. Each spring 165 urges each roller support plate 140 upward until the upper surface of the head 157 a of the screw 157 contacts the lower surface of the block 167.

Further, each roller support plate 140 is supported so as to be movable in the vertical direction with respect to the table 160. Two slide rails 171 and 172 are attached to the inner surface of each roller support plate 140 in parallel so as to extend in the vertical direction. On the other hand, slide blocks 175 and 176 that mesh with the slide rails 171 and 172 are fixed to the outer surfaces of the side plates 161 of the table 160. With such a mechanism, each roller support plate 140 is guided in the vertical direction with respect to the table 160.

The front slide rail 171 protrudes below the table 160 and extends. A dog 177 having a horizontal upper surface is attached to the lower end of the rail 171. The upper surface of the dog 177 is in contact with a roller of a pressing mechanism that will be described later. As will be described in detail later, the sinking mechanism lowers the main body portion at a predetermined speed along with the crimping so that the electric wire does not bend or bend to a middle height when crimping the terminal. When the dog 177 is pushed down by the roller, the roller support plate 140 descends against the urging force of the spring 165, and the height of the contact surfaces of the upper and lower rollers 121, 122 (clamp height) is lowered.

Next, the electric wire feeder conveyance mechanism 180 will be described with reference to FIGS.
The transport mechanism 180 moves the roller unit 110 from the wire feeding position P0 to the top peeling position P1 and further to the top terminal crimping position P3 in a direction orthogonal to the wire feeding direction (wire feeding device moving direction). Is. The electric wire feeder conveyance mechanism 180 is attached to the lower surface of the table 160 and the conveyance rail 181 laid on the machine base 3 so as to extend in the electric wire feeder conveyance direction from the electric wire feeding position P0 to the top terminal crimping position P3. And a slider 182 that engages with the transport rail 181.

Furthermore, the electric wire feeder conveyance mechanism 180 includes a motor 185, and an arm 187 for connecting the output shaft 185a of the motor 185 and the table 160 via the slider assembly 190. The slider assembly 190 includes a rail 191 attached to the lower surface of the table 160 and extending in parallel with the wire feeding direction, and a slider 192 that engages with the rail 191. The motor 185 is attached to the lower surface of the machine base 3, and the output shaft 185 a protrudes from the upper surface of the machine base 3. The base end of the arm 187 is fixed to the output shaft 185a. A shaft 187 a extending upward in the vertical direction is provided at the tip of the arm 187. The shaft 187 a is connected to the slider 192 of the slider assembly 190 through a bearing 189.

When the motor 185 rotates, the arm 187 turns along the surface of the machine base 3 about the output shaft 185a of the motor 185, and the tip of the arm 187 draws a circular orbit. This circular orbit includes a movement component in the apparatus conveyance direction and a movement component in the wire feeding direction. Due to the component in the apparatus conveyance direction, the table 160 moves along the conveyance rail 181 in the electric wire feeding apparatus conveyance direction. On the other hand, the slider 192 attached to the lower surface of the table 160 moves in the electric wire feeding direction along the rail 191 by the moving component in the electric wire feeding direction. However, since the slider 192 moves only with respect to the table 160, the table 160 itself does not move in the wire feeding direction.

By this transport mechanism 180, the roller unit 110 is transported from the wire feed position P0 to the top crimping position P3 via the top peeling position P1, and then from the top crimping position P3 to the wire feed position P9. However, as will be described later, at the top crimping position P3, the wires are crimped one by one, so the first crimping position for crimping the first wire (the wire closer to the wire feeding position P0) and the second wire. The second crimping position for crimping is taken.

Moreover, since the two electric wires clamped to the roll unit 110 can be moved in parallel by conveying the table 160 in a straight line in this way, it is preferable because the electric wires are not bent and wrinkled.

Next, the cutting and stripping apparatus 200 will be described with reference to FIG. 6, FIG. 7, and FIG.
The cut / strip device 200 cuts the two wires clamped by the wire feeding device 100 and the tail clamp device 300 and peels the tips of the two remaining wires held by the wire feeding device 100. It peels and peels the rear-end part of the two cut electric wires currently hold | gripped by the tail clamp apparatus 300. FIG.

The cut / strip device 200 includes a cutting part 210, a top peeling part 220, a tail peeling part 230, an upper and lower guide part 240, and a moving mechanism 260 for each part.
The cutting part 210, the top peeling part 220, and the tail peeling part 230 are composed of upper and lower blades 211 and 212, 221 and 222, 231 and 232, respectively. The vertical guide part 240 includes an upper guide 240 and a lower guide 242.

As shown in FIG. 7A, V-shaped blade portions 211a and 212a are formed on the lower edge of the cutting upper blade 211 and the upper edge of the lower blade 212, respectively, with a gap between the wires.
V-shaped blade portions 221a, 231a, 222a, and 232a are provided at the lower edges of the upper blades 221 and 231 for top peeling and tail peeling and the upper edges of the lower blades 222 and 232, respectively. Is formed.

As shown in FIG. 7 (B), the upper and lower guide portions 240 guide the rear end portion of the cut electric wire, and are arranged in front of the cut portion 210 in the electric wire feeding direction. The lower surface 241a of the upper guide 241 is a flat guide surface. The lower surface 241a is positioned to be higher than the bottom surface of the blade portion 211a of the cutting upper blade 211.
On the other hand, two U-shaped guide grooves 242a are formed on the upper surface of the lower guide 242 with a gap between the wires. The bottom surface of each guide groove 242a is inclined upward in the forward direction in the wire feeding direction. Further, the bottom surface of each guide groove 242a is positioned so as to be lower than the wire feed height H and higher than the bottom surface of each blade portion 212a of the cutting lower blade 212.

As shown in FIG. 6, in the cutting part 210, the top peeling part 220, and the tail peeling parts 230, in the direction perpendicular to the electric wire feeding direction, the wire feeding position P 0, the top peeling position P 1, and It is arranged at the tail peeling position P2. Furthermore, as shown in FIG. 7A, in the wire feeding direction, the cutting part 210 is located at the cutting position, the top peeling part 220 is located behind the cutting position, and the tail peeling part 230 is cut. It is located in front of the position.

As shown in FIG. 6, the upper blades 211, 221, and 231 are attached to the upper holder 251, and the lower blades 212, 222, and 232 are attached to the lower holder 252. The upper blades and the lower blades are attached to the holders 251 and 152 so as to have a height that is equidistant from the wire feed height H in the vertical direction. However, the interval between the upper and lower blades of the cutting portion 210 is narrower than the interval between the upper and lower blades of the peeled portions 220 and 230.

The upper and lower holders 251 and 252 are supported by the moving mechanism 260 so as to move in the opposite direction in the vertical direction. As shown in FIG. 6, the moving mechanism 260 includes an upper slider 261 to which the upper holder 251 is attached, a lower slider 262 to which the lower holder 252 is attached, and a linear rail 265 that guides the sliders 261 and 262 in the vertical direction. 266, a ball screw 269 with which the upper and lower sliders 261, 262 are engaged, and a motor 270 for rotating the ball screw 269. These are housed in a vertically long housing 273. In the ball screw 269, the direction of the screw formed in the part (upper part) with which the upper slider 261 is engaged is opposite to the direction of the screw formed in the part (lower part) with which the lower slider 262 is engaged. ing. With such a configuration, when the ball screw 269 is rotated by the motor 270, the upper and lower sliders 261 and 262 move along the linear rails 265 and 266 in the opposite direction in the vertical direction. Therefore, the upper and lower holders 251 and 252 move by the same distance in the approaching direction and the separating direction.

The holders 251 and 252 are moved by a moving mechanism 260 to a fully open position where the distance between the upper and lower blades is sufficiently wide, and the upper and lower blades 221 and 212 for cutting are completely overlapped with the upper and lower blades 221 for peeling. The upper and lower blades 221, 222, 231, and 232 for peeling each after the half-open position where the gap is open between 222, 231 and 232 and the upper and lower blades 211, 212 for cutting completely overlap each other. It is driven to take three positions, the overlapping position of the overlapping parts. In the half-open position, the electric wire is cut by the cutting portion 210, and in the fully closed position, a cut is formed in the covering of the electric wire by the peeled portions 220 and 230.

The lower guide 242 is attached to the upper holder 251. That is, the lower guide 242 moves together with the upper blades 211, 221 and 231.
On the other hand, the upper guide 241 moves independently in the vertical direction by the cylinder 280, and brings the fed electric wire close to the height of the electric wire.

The upper and lower guides 241 and 242 are for correcting the posture of the electric wire when the electric wire is cut.

Further, as shown in FIG. 8, a vacuum pipe 290 is disposed in front of the top peeled portion 220 in the wire feeding direction so as to be movable in the front-rear direction. The vacuum pipe 290 is for sucking the coating that has been cut at the top peeled portion 220 and separated from the electric wire. The vacuum pipe 290 is disposed so that the tip is directed between the blades of the top peeled portion 220 from the front in the electric wire feeding direction. On the other hand, the cylinder 291 is attached to the housing 273 such that the output shaft 291a extends rearward in the wire feeding direction. The vacuum pipe 290 is attached to the output shaft 291a by a bracket 293, and is positioned at the forward movement position and the backward movement position. In the advanced position, the tip of the vacuum pipe 290 is positioned slightly in front of each blade of the top peeled portion 220. In the retracted position, the tip of the vacuum pipe 290 is drawn to a position ahead of the entire blade in the wire feeding direction. This is to prevent the vacuum pipe 290 from interfering with the movement of the residual electric wire whose terminal is crimped to the tip.

Next, the tail clamp device 300 will be described with reference to FIGS. 9 to 12.
The tail clamp device 300 is for gripping the rear ends of the two cut wires cut by the cut / strip device 200. As shown in FIG. 9, the apparatus 300 includes a clamp unit 310, a clamp bracket 340 in which the clamp unit 310 is supported so as to be movable up and down, and a table 360 in which the clamp bracket 340 is supported so as to be movable in the wire feeding direction. Is mainly provided. Furthermore, a tail clamp device transport mechanism 380 that transports the table 360 in the tail clamp transport direction is provided.

As shown in FIG. 10 (A), the clamp unit 310 includes two sets of left and right clamp portions 320L and 320R, left and right cylinders 325L and 325R that open and close the clamp portions 320, and left and right longitudinally attached left and right cylinders. A base 329.

Each clamp part 320 consists of left and right claw members 321 and 322 for gripping the electric wire from the left and right direction. As shown in FIG. 10 (B), each claw member 321 and 322 is a member bent in a “U” shape when viewed from the front, and an upper side portion connected at an obtuse angle at each of the central bent portions 321a and 322a. 321b and 322b and lower side portions 321c and 322c. The left claw member 321 has an upper side part 321b and a lower side part 321c extending in the upper left and lower left directions with respect to the bent part 321a, and the right claw member 322 has an upper side part 322b and a lower side part 322c with respect to the bent part 322a. Extending in the upper right and lower right directions. As shown in FIG. 10A, the left and right claw members 321 and 322 are arranged so that the bent portions 321a and 322a are in contact with each other at the same height, and the same portion is rotated to the front surface of the base 329 by a fixing pin 324. It is mounted movably.

In each of the clamp portions 320L and 320R, the upper ends of the link arms 326 are connected to the lower ends of the lower side portions 321c and 322c of the left and right claw members 321 and 322 through movable pins. The lower ends of the left and right link arms 326 are connected to the upper ends of extension rods 327 fixed to the upper ends of the output shafts 325 a of the cylinders 325 attached to the base 329.

In the clamp closed state indicated by the solid line in FIG. 10B, the output shaft 325a of the cylinder 325 is extended, and each link arm 326 is open. The inner surface of the upper side portion 321b of the left claw member 321 is in contact with the inner surface of the upper side portion 322b of the right claw member 322.
When releasing the clamp, the output shaft 325a of the cylinder 325 is contracted as shown by a two-dot chain line in FIG. Then, each link arm 326 is rotated so as to be closed, and each claw member 321, 322 is rotated about the fixing pin 324. That is, the left claw member 321 rotates counterclockwise about the fixed pin 324, and the right claw member 322 rotates clockwise about the fixed pin 324. As a result, the space between the inner surface of the upper side portion 321b of the left claw member 321 and the inner surface of the upper side portion 322b of the right claw member 322 is opened, and the clamp is released.

The left and right clamp portions 320L and 320R are arranged so that the interval between the clamp positions (the state where the inner surfaces of the upper side portions of the left and right claw members are in contact with each other) is equal to the wire interval. With such an arrangement, when the clamp is opened and closed, the lower side portions 321c and 322c of the left and right claw members 321 and 322 interfere in the wire feeding direction. Therefore, as shown in FIG. 11, in the wire feeding direction, the positions of the upper sides of the claw members 321 and 322 are the same, and the position of the lower side 322c is shifted in the front-rear direction. In this example, the lower side portion of each claw member of the left clamp portion 320L is positioned forward, and the lower side portion of each claw member of the right clamp portion 320R is positioned rearward.

As shown in FIGS. 9 and 12, the clamp unit 310 is supported by being suspended from the clamp bracket 340 by a spring 350 and supported so as to be movable in the vertical direction. FIG. 12 shows only one clamp part 320 and the base 329 for easy understanding. As shown in FIG. 12, the clamp bracket 340 is a substantially box-shaped member having a bottom plate 341, left and right side plates 342L, 342R, and a front plate 343.

A slide rail 331 extending in the vertical direction is attached to the rear surface of the base 329 of each clamp portion 320 of the clamp unit 310. On the other hand, a slide block 332 that engages with each slide rail 331 is fixed to the front plate 343 of the clamp bracket 340. With such a mechanism, the clamp unit 310 is guided in the vertical direction with respect to the table 360.
As described above, by shifting the positions of the lower side portions of the claw members of the left and right clamp portions 320 in the front-rear direction, a surface to which the left clamp portion 320L of the front plate 343 is attached and a surface to which the right clamp portion 320R is attached. Is shifted in the front-rear direction.

As shown in FIG. 9, the slide rails 331 of the left and right clamp portions 320 protrude downward from the clamp bracket 340. A dog 335 extending forward in the wire feeding direction is attached to the lower end of the rail 331. Each dog 335 has a horizontal top surface. A roller of a sinking mechanism, which will be described later, abuts on the upper surface of each dog 335. Similar to the case of the wire feeder 100, the sinking mechanism lowers the clamp unit 310 at a predetermined speed along with the crimping so that the wire does not bend or bend to a middle height when crimping the terminal.

A stay 337 extending rearward between the side plates of the clamp bracket 340 is attached to the rear surface of the lower end portion of each slide rail 331.

12, a pin 345 extending inward is fixed to the inner surface of the upper portion of each side plate 342 of the clamp bracket 340. As shown in FIG. The upper end of the spring 350 is locked to the pin 345. The lower end of the spring 350 is locked to the stay 337 of each clamp part 320 of the clamp unit 310. The spring 350 is a tension coil spring, and the clamp unit 310 is biased upward and supported by the spring 350 with respect to the clamp bracket 340.

The upper limit height of the clamp unit 310 urged upward by the spring 350 is set so that the clamp height of each clamp part 320 becomes the wire feed height H. This height is defined by a stopper pin 347 protruding inward from the inner surface of the lower part of each side plate 342 of the clamp bracket 340. The spring 350 urges the clamp unit 310 upward to a height at which the stay 337 of each clamp portion 320 of the clamp unit 310 contacts the lower surface of the stopper pin 347.

The cylinder 355 is attached to the rear surface of the front plate 343 of the clamp bracket 310 so that the output shaft 355a is downward. This cylinder 355 is for moving the stay 337 of each clamp part 320 of the clamp unit 310 downward. A pressing portion 356 is attached to the lower end of the output shaft 355a. When the output shaft 355a is extended, the pressing portion 336 pushes down the stay 337 against the urging force of the tension coil spring 350, and the clamp portion 320 is lowered.

As shown in FIG. 9, the clamp bracket 340 is supported by the table 360 so as to be movable in the wire feeding direction. A slider 361 extending in the wire feeding direction is attached to the lower surface of the clamp bracket 340. On the other hand, a linear rail 362 with which the slider 361 engages is laid on the table 360. A moving mechanism 370 for moving the slider 361 of the clamp bracket 340 along the linear rail 362 is provided on the table 360. The moving mechanism 370 has a ball screw 371 with which the clamp bracket 340 engages, and a motor (not shown) that rotates the ball screw 371 via a pulley 372. When the ball screw 371 is rotated by the motor, the clamp bracket 34 moves in both directions of the wire feeding direction along the linear rail 362.

Next, the tail clamp device transport mechanism 380 will be described.
As shown in FIG. 1, the transport mechanism 380 moves the tail clamp device 300 from the wire feed position P0 to the tail peeling position P2 and further to the tail terminal crimping position P4 in a direction perpendicular to the wire feed direction (tail clamp). (Moving direction of apparatus). The tail clamp device transport mechanism 380 has the same configuration as the wire feeder transport mechanism 180 described above, and is mounted on the machine base 3 so as to extend from the wire feed position P0 to the tail terminal crimping position P4 in the tail clamp device transport direction. A laying conveyance rail 381 and a slider 382 that is attached to the lower surface of the table 360 and engages with the conveyance rail 381 are provided.

Furthermore, the tail clamp device transport mechanism 380 includes a motor 385, and an arm 387 for connecting the output shaft 385a of the motor 385 and the table 360 via the slider assembly 390. The slider assembly 390 includes a rail 391 that is attached to the lower surface of the table 360 and extends parallel to the wire feeding direction, and a slider 392 that engages with the rail 391. The motor 385 is attached to the lower surface of the machine base 3, and the output shaft 385 a protrudes from the upper surface of the machine base 3. The base end of the arm 387 is fixed to the output shaft 385a. A shaft 387a extending upward in the vertical direction is provided at the tip of the arm 387. The shaft 387a is connected to the slider 392 of the slider assembly 390 via a bearing 389.

When the motor 385 rotates, the arm 387 turns around the surface of the machine base 3 around the output shaft 385a of the motor 385, and the tip of the arm 387 draws a circular orbit. This circular orbit includes a movement component in the apparatus conveyance direction and a movement component in the wire feeding direction. Due to the component in the apparatus conveyance direction, the table 360 moves along the conveyance rail 381 in the electric wire feeder conveyance direction. On the other hand, the slider 392 attached to the lower surface of the table 360 moves along the rail 391 in the wire feeding direction due to the moving component in the wire feeding direction. However, since the slider 392 moves only with respect to the table 360, the table 360 itself does not move in the wire feeding direction.

The transport mechanism 380 causes the tail clamp device 300 to be transported from the wire feed position P0 to the tail crimping position P4 via the tail peeling position 2, and then from the tail crimping position P4 to the wire feed position P0. However, as will be described later, at the tail crimping position P4, since the electric wires are crimped one by one, a first crimping position for crimping the first electric wire and a second crimping position for crimping the second electric wire are taken.

The positional relationship between the wire feeder 100 and the tail clamp device 300 is shown in FIG.
As shown in FIG. 13 (A), both devices 100 and 300 are arranged to face each other at the wire feeding position, and as shown in FIG. 13 (B), each pair of rolls 120 of the wire feeding device 100 is arranged. The clamp portions 320 of the tail clamp device 300 are coaxially positioned in the wire feeding direction. Moreover, each roll pair 120 and each clamp part 320 are located in the same electric wire feed height H.

Next, the top terminal crimping apparatus 400 and the tail terminal crimping apparatus 500 will be described with reference to FIG. The same crimping device is used for the top side and the tail side. FIG. 14 shows a top terminal crimping apparatus 400.
As a crimping device, a commonly used one can be used (for example, Japanese Patent No. 4230534). This device is a device for crimping terminals supplied as a series of strips one by one to the end of an electric wire from which the coating has been stripped. The apparatus 400 includes a press 410 having an elevating ram 411, an elevating side crimper 421 and a fixed side anvil 422, which are crimping tools driven by the ram 411, and a slide cutter for cutting a connection portion between a terminal and a belt. 423. Description of the specific configuration and operation of the crimping apparatus 400 is omitted. The above-described cut / strip device 200 cuts or peels off two electric wires at the same time. In crimping, the electric wires are crimped one by one.

The top terminal crimping device 400 is further provided with a sinking device for raising and lowering the roller unit 110 of the electric wire feeding device 100 described above. Further, the tail terminal crimping device 500 is provided with a sinking device for raising and lowering the clamp unit 310 of the tail clamp device 300 described above. The same device 450 can be used as both sinking devices. FIG. 14 shows a sink device 450 on the electric wire feeder side. This sinking device 450 is configured to clamp the roller unit 110 of the wire feeding device 100 and the tail plumping device 300 of FIG. 12 when the crimper 421 is lowered and the slide cutter 423 is driven downward to cut the strip. This is for lowering the unit 310 in synchronization with the slide cutter 423. As a result, the crimping operation is performed while the electric wire remains in a substantially straight state, so that the electric wire is not bent at the middle or high at the base of the terminal and the tip is not bent downward.

The crimping device 400 (500) can crimp an electric wire having a wire diameter within a certain range.

The sinking device 450 is disposed so as to face the wire feeding device 100 and the tail clamp device 300. The apparatus 450 includes a roller 451 that engages with a dog 177 of the roller unit 110 of the electric wire feeder 100 (or a dog 335 of the clamp unit 310 of the tail clamp apparatus 300), and a motor 453 that rotates the roller 451. . The motor 453 is installed on the machine base so that the output shaft faces the wire feeding direction rearward. A reduction gear 454 is connected to the output shaft, and a tip plate 456 is fixed to the output shaft 454 a of the reduction gear 454. A protrusion 457 protruding in a direction parallel to the output shaft 454a is formed at a position off the center of the tip plate 456. A roller 451 is attached to the tip of the protrusion 457. The roller 451 is positioned so as to contact the upper surface of the dog 177 in the standby state (the clamp height of each device is equal to the wire feed height H).

When the motor 453 rotates, the tip plate 456 rotates together, and the roller 451 moves on an elliptical path. Along with this, the lower surface of the roller 451 pushes down the dog 177 and lowers the roller unit 110 of the wire feeder 100. For example, the motor 453 descends the roller unit 110 of the wire feeding device 100 at a predetermined speed at the timing when the crimper 421 of the crimping device 400 is lowered and the slide cutter 423 is driven downward and the cutting blade cuts the band. It is controlled to let you.

Next, the dispensing device 600 will be described with reference to FIGS. 1, 15, 16, and 17.
After the terminals are crimped to the rear ends of the two wires by the tail crimping device 500, the dispensing device 600 receives these wires from the tail clamp device 300 and conveys them from the tail clamp position P4 to the dispensing positions P5 and P6. Is to do. The apparatus 600 includes a clamp unit 610 and a moving mechanism 650 of the clamp unit 610.

As shown in FIG. 17, the clamp unit 610 includes two sets of clamp parts 620L and 620R on the left and right sides, cylinders 627L and 627R that drive the clamp parts 620 to open and close, and a base 630 to which these are attached. The clamp unit 610 is arranged in the vertical direction so as to clamp the electric wire from above.

Each clamp part 620 has left and right claw members 621 and 622 that sandwich the electric wire from both left and right sides. As shown in FIG. 17A, in each clamp portion 620, the left and right claw members 621 and 622 are rotatably supported by the base 630 by fixing pins 624. The claw members 621 and 622 are engaged with a movable pin 625 supported at the tip of an arm 628 attached to the output shaft 627a of the cylinder 627.

In the clamp closed state shown in FIG. 17A, the output shaft 627a of each cylinder 627 is extended, and the left and right claw members 621 and 622 are closed.
When releasing the clamp, the output shaft 627a of the cylinder 627 is contracted as shown in FIG. Then, the movable pin 625 rises, the left and right claw members 621 and 622 rotate in opposite directions around the fixed pin, and the left and right claw members 621 and 622 open.

Since each clamp unit 620 is driven by a separate cylinder 627, it can be opened and closed independently.

Next, the clamp unit moving mechanism 650 will be described with reference to FIGS. 15 and 16.
As shown in FIG. 15, the clamp unit moving mechanism 650 moves the clamp unit 610 from the tail terminal crimping position P4 to the non-defective product discharge position P5 and the non-defective product discharge position P6. Each discharge position is provided with a chute for receiving the product. At this time, each clamp part 620 of the clamp unit 610 moves while maintaining a posture (posture in FIG. 16) aligned in a direction orthogonal to the wire feeding direction. The moving mechanism 650 includes a motor 651, an arm 655 and a timing belt 661 that connect the output shaft 651 a of the motor 651 and the clamp unit 610.

The motor 651 is installed on the machine base so that the output shaft 651a extends downward as shown in FIG. The base end of the arm 655 is fixed to the output shaft 651a. A shaft 631 extending in the vertical direction is erected on the upper surface of the base 630 of the clamp unit 610. The tip of the arm 655 is connected to the shaft 631 via a bearing 656.

Furthermore, a pulley 657 is fixed to the output shaft 651a of the motor 651. On the other hand, a pulley 658 is rotatably attached to the shaft 631 of the clamp part 610 via a bearing 659. A timing belt 661 is wound between the pulleys 657 and 658. Since the clamp unit 610 is connected to the arm 655 by the bearing 656, the clamp unit 610 is rotatable about the shaft 631 in the vertical direction. Therefore, when the clamp unit 610 is located at the tail terminal crimping position P4, the clamp portions 620 of the clamp unit 610 are positioned by the timing belt 661 so that they are aligned in the electric wire alignment direction (direction orthogonal to the electric wire feeding direction). ing.

When the motor 651 rotates, the arm 655 fixed to the output shaft 651a also turns in one direction (clockwise in FIG. 15) around the output shaft 651a. The pulley 657 fixed to the output shaft 651a also rotates at the same time. On the other hand, since the pulley 658 attached to the shaft 631 of the clamp unit 610 is rotatable with respect to the shaft 631, only the same angle in the opposite direction to the rotation direction of the pulley 657 fixed to the output shaft 651a by the timing belt 661. Rotate. As a result, as shown in FIG. 15, the clamp unit 610 moves in the same posture even when the arm 655 rotates.

As shown in FIG. 15, in this example, the arm 655 turns at a predetermined angle from the tail terminal crimping position P4 (non-defective product delivery position P5), and the clamp unit 620 that clamps the non-defective product opens to deliver the good product, Thereafter, at a position further turned by a predetermined angle (defective product delivery position P6), the clamp unit 620 that clamps the defective product opens and delivers the defective product. A method for determining the quality of the product will be described later.

Thus, since each clamp part 620 of the clamp unit 610 can be opened and closed independently, even when the terminal crimped wire clamped on one clamp part is defective and the other terminal crimped cable is non-defective, etc. Each electric wire can be discharged at an appropriate discharge position.

Next, an example of the movement of the two-wire terminal crimped electric wire manufacturing apparatus 1 described above will be described in detail with reference to the flowchart of FIG. 18 and the timing chart of FIG. In this example, a case where the length of two electric wires is 100 mm will be described.
In the standby state of S0 (time t0 in the timing chart), the wire feeder 100 and the tail clamp device 300 are positioned at the wire feed position (origin) as shown in FIG. The clamp part 320 is opposed to the cutting position with a predetermined interval. In the electric wire feeder 100, electric wires (residual electric wires) drawn from two electric wire bundles are clamped between the rollers of the upper and lower roller pairs. On the other hand, each clamp part of the tail clamp apparatus 300 is in an open state, and two electric wires are fed into the clamp part from the wire feeder. The cut / strip device 200 stands by in a fully open state in which the upper and lower blades are opened.

First, at S1 (time t1), each clamp part 320 of the tail clamp device 300 is closed and each electric wire is clamped. At the same time, the upper guide 241 (see FIGS. 6 and 7) of the cut and strip device 200 is raised. At S2 (time t2), the cut / strip device 200 is driven to the half-open position, and the two electric wires are cut. Thereby, the front-end | tip part of two residual electric wires is clamped to the electric wire feeder 100, and the rear-end part of two cut electric wires is clamped to the tail clamp apparatus 300. FIG.

At S3 (time t3), the moving mechanism 370 (see FIG. 9) of the tail clamp device 300 is driven in the backward direction, and each motor 130 of the wire feeding device 100 is driven in the wire drawing direction. That is, the tip positions of the residual electric wire and the cut electric wire are slightly retracted from the cutting position. This is to prevent the end portions of each electric wire after being moved in the lateral direction (device transport direction) from coming into contact with the upper and lower cutting blades.

Next, at S4 (time t4), the tail clamp device 300 is conveyed to the tail peeling position P2, and then at S5 (time t5), the wire feeding device 100 is conveyed to the top peeling position P1. Then, at S6 (time t6), the cut / strip device is driven to the fully closed position, and a cut is simultaneously made in the covering of the front end portion of the remaining electric wire and the rear end portion of the cut electric wire. Thereafter, at S7 (time t7), the moving mechanism 370 of the tail clamp device 300 is driven in the backward direction for a predetermined time. That is, since the tail clamp device 300 that clamps the electric wire in a state where the blade is inserted in the sheath moves backward, the cut-in sheath is separated from the electric wire. At the same time, each motor 130 of the electric wire feeder 100 is driven in the electric wire drawing direction for a predetermined time. As a result, the similarly cut coating is separated from the electric wire. During this time, the vacuum pipe 290 (see FIG. 8) of the cutting and stripping apparatus 200 is performing a vacuum operation, and the separated coating is collected in the pipe.

Then, the tail clamp device 300 is conveyed to the first tail crimping position at S8 (time t8), and then the electric wire feeder 100 is conveyed to the first top crimping position at S9 (time t9). Each 1st crimping | compression-bonding position is a position where the clamp part nearer to the electric wire feeding position P0 of each apparatus is positioned at each crimping position. At S10 (time t10), the moving mechanism 370 of the tail clamp device 300 is driven to slightly advance the device, and each motor 150 of the wire feeding device 100 is driven in the wire feeding direction. That is, the ends of the residual electric wire and the cut electric wire slightly move forward.

Then, after the tail sinking device 450 starts to be driven at S11 (time t11), the tail terminal crimping device 500 is driven to crimp the terminal to the tip of the first cut wire. Although a detailed description of the crimping operation is omitted, as described above, when the crimper of the crimping device is lowered and the slide cutter is driven downward and the cutting blade cuts the band, the clamp unit 310 of the tail clamp device 300 is used. However, the sinking device 450 descends in synchronization with the slide cutter, and crimps the electric wire in a substantially straight state. For this reason, an electric wire does not bend in the middle and high at the base of a terminal, and a front end does not bend below. Further, after the top sink device 450 starts to be driven at S12 (time t12), the top terminal crimping device 400 is driven, and the terminal is crimped to the tip of the first remaining electric wire as described above.

After completion of the first crimping operation, the vacuum pipe 290 moves backward at S13 (time t13). This is because the tip of the vacuum pipe 290 interferes with the end of the electric wire when the remaining electric wire clamped on the electric wire feeder 100 and the terminal is crimped on the tip passes through the cut / strip device 200 in the subsequent steps. It is because it does not.

Next, at S14 (time t14), the tail clamp device 300 is conveyed to the second tail crimping position, and then at S15 (time t15), the wire feeder 100 is conveyed to the second top crimping position. Then, after the tail sinking device 450 starts to be driven at S16 (time t16), the tail terminal crimping device 500 is driven to crimp the terminal to the tip of the second cut wire. Thereafter, after the top sink device 450 starts to be driven in S17 (time t17), the top terminal crimping device 400 is driven, and the terminal is crimped to the tip of the second remaining electric wire.

Thus, in the present invention, the terminals are not crimped simultaneously to the tips of the two electric wires, but the terminals are crimped one by one. That is, one device for crimping a terminal to one electric wire is used. When the terminals are crimped one by one, the working time is longer than when two terminals are crimped simultaneously. However, since one terminal crimping device is provided on each of the top side and the tail side, the equipment cost is reduced. Further, the overall size of the apparatus is reduced, and the weight is reduced.
However, it is also possible to use a terminal crimping device that can crimp a terminal to two wires at the same time, or two terminal crimping devices on the top side and the tail side, respectively.

Next, at S18 (time t18), each motor 130 of the wire feeding device 100 is driven in the wire drawing direction, and the two residual wires whose terminals are crimped to the tip slightly move backward. This is to prevent the wire terminal moving in the lateral direction (device transport direction) from coming into contact with each device. Next, at S19 (time t19), the moving mechanism 370 of the tail clamp device 300 is driven in the backward direction. The clamp unit 610 of the dispensing device 600 is positioned at this retracted position.

Then, at S20 (time t20), each clamp portion 620 of the clamp unit 610 of the dispensing device 600 is closed, and the two cut electric wires clamped on the tail clamp device 300 are clamped. Thereafter, at S <b> 21 (time t <b> 21), each clamp portion 320 of the tail clamp device 300 is opened, whereby two cut wires are transferred from the tail clamp device 300 to the dispensing device 600. At the same time, the dispensing device 600 starts a turning operation, and the two cut electric wires transferred are conveyed to the dispensing positions P5 and P6 and are dispensed. At the same time, the wire feeder 100 returns from the second top crimping position P3 to the origin position P0. Immediately thereafter, at S22 (time t22), each motor 150 of the wire feeder 100 is driven in the wire feeding direction for a predetermined time, and the two remaining wires are fed by a predetermined length in the wire feeding direction. At this time, the tail clamp device 300 has not returned to the origin position P0.

Then, at S23 (time t23), the cylinder 355 (see FIGS. 9 and 12) of the tail clamp device 300 is driven to extend, and each clamp part 320 is lowered. Next, at S24 (time t24), the upper guide 241 is lowered, and the two electric wires fed from the electric wire feeder 100 at the electric wire feeding position P0 are guided downward. Thereafter, at S25 (time t25), the moving mechanism 370 of the tail clamp device 300 is driven in the forward direction and returns to the origin position P0. At this time, at the wire feeding position P0, two wires are fed from the wire feeding device 100 as described above, but each clamp portion 320 of the tail clamp device 300 is conveyed in a lowered posture as described above. Therefore, the clamp part 320 does not interfere with the electric wire being fed. After the tail clamp device 300 returns to the origin, at S26 (time t26), the cylinder 355 of the tail clamp device 300 is driven to contract, and each clamp portion 320 is raised. Thereby, an electric wire fits between the claw members of each clamp part 320 of the tail clamp device 300.

Two terminal crimping electric wires can be manufactured by the above operations. When the length of the electric wire is 100 mm, the manufacturing time is about 0.9 sec. As a comparison, the manufacturing time for manufacturing two electric wires having the same length in a general terminal crimped electric wire manufacturing apparatus (one electric wire processing number) is about 1.6 sec.

Next, another embodiment of the present invention will be described with reference to FIG.
In the two-wire terminal crimped electric wire manufacturing apparatus 1 of this embodiment, the distal end portion of the residual electric wire clamped by the electric wire feeder 100 and the rear end portion of the cut electric wire clamped by the tail clamp device 300 are: It is provided with posture holding means 700 that determines whether or not the clamp posture is normal and corrects it to a normal posture if it is not normal. For easy understanding, the case of one electric wire will be described.

The posture holding means 700 includes, for example, a total of four cameras 701 that capture the ends of the residual wires clamped by the wire feeder 100 and the tail clamp device 300, and images of the ends of the wires captured by each camera 701. And a determination unit 702 for determining whether the end of the electric wire is in a normal clamping posture. The two cameras 701 are arranged between the top peeler 220 of the cut / strip device 200 and the top terminal crimping device 400, and the other two cameras are connected to the tail peeler 230 of the cutstrip device 200. It is installed between the tail terminal crimping device 500. One of the two cameras placed at each position takes a picture of the wire end from either the top or bottom, and the other camera takes the wire end from either the left or right direction. Take a picture. That is, the shape of the end portion of the electric wire in the horizontal plane and the shape in the vertical plane are photographed.
In addition, if it is possible to recognize the vertical and horizontal shifts of the end of the electric wire by photographing the end of the electric wire from an oblique upper part with a single camera, one camera should be arranged at each position. You can also.

The photographed image is sent to the determination unit 702. In the determination part 702, the shift | offset | difference direction and deviation | shift amount from the normal state of an electric wire tip position are determined. In the case of the horizontal plane image shown in FIG. 21A, the position of the tip is shifted by a distance x1 in the left direction in the figure. In this case, the control unit 702 controls the wire feeding device transport mechanism so that the wire feeding device 100 (or the tail clamp device 300) clamping the wire is transported to the right by the distance x1 from the normal crimping position. 180 (or tail clamp device transport mechanism 380) is controlled. And the crimping | compression-bonding operation | work is performed after adjusting the position of the front-end | tip of an electric wire to the normal crimping | compression-bonding position.

In the case of the vertical plane image shown in FIG. 21B, the position of the tip is shifted upward by the height h1. In this case, when the control unit 702 controls the crimping sinking device 450 so that the sinking timing is set earlier than in the normal case, and the clamp unit (roller pair) is lowered downward from the normal crimping height by the height h1. In addition, the crimping operation is performed so that the position of the tip of the electric wire becomes a normal crimping height.
On the other hand, in the case of the vertical plane image shown in FIG. 21C, the position of the tip is shifted downward by a height h2. In this case, the control unit 702 performs control so that the sinking timing of the crimping sink device 450 is delayed as compared with the normal case, and the clamp unit (roller pair) is moved to a position above the normal crimping height by the height h2. When the wire is lowered, the crimping operation is performed so that the position of the tip of the electric wire becomes a normal height.

Next, another example of the posture holding means 700 will be described with reference to FIG.
In the above-described example, when the position of the wire tip is shifted from the normal position in the vertical direction as shown in FIGS. 21B and 21C, the sink timing of the sink device 450 is changed to change the wire tip portion. The height was adjusted. In this example, not the sinking device 450 but the inclination adjusting means 800 that adjusts the inclination of the nozzle 135 of the wire feeding device 100 and changes the height of the tip of the nozzle 135 is provided.

The tilt adjusting means 800 includes a nozzle holder 801 that holds the nozzle 135, a spring 807 that biases the nozzle holder 801 so that the height of the nozzle 135 becomes the wire feed height H, and a means that rotates the nozzle holder 801. (Not shown). In the example shown in FIG. 2, the nozzle 135 is fixed to the roller support plate 140. In this example, the nozzle 135 is attached to a nozzle holder 801 different from the roller support plate 140. The nozzle holder 801 is a “U” -shaped member whose top is opened when viewed from the side. The holder 801 is supported by a support member 803 whose rear end is fixed to the table 160 so as to be rotatable about a rotation shaft 805 extending in a direction orthogonal to the wire feeding direction. The nozzle 135 is attached to the tip of the holder 801.

A spring 807 is interposed between the nozzle holder 801 and the table 160. The nozzle holder 801 is positioned by the spring 807 so that the nozzle 135 faces the wire feeding direction at the wire feeding height H.

When the nozzle holder 801 is rotated counterclockwise about the rotation axis 805 by the rotation means, the nozzle 135 is inclined downward as shown by a two-dot chain line in FIG. That is, the tip position of the electric wire moves downward. As shown in FIG. 21B, when the tip of the wire is curved upward, the nozzle 135 is inclined downward by a predetermined angle in this way, and the height of the wire tip is set to the wire feed height H. Can be adapted to

DESCRIPTION OF SYMBOLS 1 Two-wire terminal crimping electric wire manufacturing apparatus 3 Machine base 100 Electric wire feeding apparatus 110 Roller unit 120 Roller pair 160 Table 180 Electric wire feeding apparatus conveyance mechanism 200 Cut strip apparatus 210 Cutting part 220 Top peeling part 230 Tail peeling part 260 Moving mechanism 300 Tail clamp device 310 Clamp unit 320 Clamp unit 340 Clamp bracket 360 Table 380 Tail clamp device transport mechanism 400 Top terminal crimping device 450 Sink device 500 Tail terminal crimping device 600 Dispensing device 610 Clamp unit 620 Clamp unit 650 Moving mechanism 700 Posture holding means 800 Inclination adjusting means

Claims (11)

An electric wire feeder for feeding electric wires;
A top stripping device for stripping the coating of the tip of the wire;
A top terminal crimping device that crimps the terminal to the peeled tip,
An electric wire cutting device for cutting an electric wire whose terminal is crimped to the tip into an arbitrary length;
A tail clamp device for gripping the rear end of the cut electric wire;
A tail peeling device for peeling off the covering of the rear end of the cut electric wire;
A tail terminal crimping device that crimps a terminal to the peeled rear end;
A wire dispensing device with terminals crimped on both ends;
Comprising
The electric wire feeder has two sets of rollers for sending electric wires, and the two sets of rollers are driven by separate motors. The top peeling device and the tail peeling device each have two sets of peeling tools for peeling two parallel wires,
The wire cutting device has two sets of cutting blades for cutting two wires in parallel,
The said top terminal crimping apparatus and the said tail terminal crimping apparatus each have a set of terminal crimping machines which process two wires one by one at different times. Wire terminal crimping wire manufacturing equipment. The two-wire terminal crimped electric wire manufacturing apparatus according to claim 1 or 2, wherein the electric wire feeding device also serves as an electric wire clamp of the top peeling device. The two-wire crimped electric wire manufacturing apparatus according to any one of claims 1 to 3, wherein the electric wire feeder drives the two sets of rollers with a single motor instead of driving them with separate motors. The dispensing device has two sets of clamp portions arranged in parallel,
The two-wire terminal crimped electric wire manufacturing apparatus according to any one of claims 1 to 4, wherein the clamp part is opened and closed independently. A process of feeding electric wires;
A top peeling process to peel off the coating on the tip of the supplied wire;
A top terminal crimping process for crimping a terminal to the peeled tip,
An electric wire cutting step of cutting the electric wire whose terminal is crimped to the tip into an arbitrary length;
A tail peeling process for peeling the covering of the rear end of the cut electric wire;
A tail terminal crimping process for crimping a terminal to the peeled rear end,
A wire payout process with terminals crimped at both ends,
A method of manufacturing a terminal crimped electric wire including:
Using the terminal crimped wire manufacturing apparatus according to any one of claims 1 to 5,
A method of manufacturing a two-wire terminal crimped electric wire, wherein at least one of the steps is performed while two wires are fed in parallel. An electric wire feeder for feeding electric wires,
A two-wire electric wire feeder characterized by having two sets of rollers for feeding electric wires, and the two sets of rollers are driven by separate motors. The two-wire electric wire feeder according to claim 7, wherein the two sets of rollers are driven by a single motor instead of being driven by separate motors. It is a method of crimping a terminal to the end of a stripped wire,
When clamping the electric wire and feeding the end of the electric wire between the crimper and anvil which are terminal crimping tools,
Detecting the position and / or bending shape of the end of the electric wire through image capturing and processing,
A terminal crimping method, wherein the clamp is adjusted in position and / or tilted. A device for crimping a terminal to the end of an electric wire from which the coating has been stripped,
A clamp device that clamps the electric wire and sends an end of the electric wire between a crimper and an anvil that are terminal crimping tools,
Position adjusting means for adjusting the height and the horizontal position of the clamp device;
Means for imaging the end of the electric wire clamped by the clamping device;
Means for determining from the image of the end of the electric wire imaged by the imaging means whether the end of the electric wire is clamped;
With
A terminal that adjusts the height and the horizontal position of the clamp device so that the end of the electric wire is in a normal clamping posture based on the determination of the image determination unit. Crimping device. The terminal crimping device according to claim 10, further comprising an inclination adjusting means for adjusting an inclination of the clamp device.

Images