JPH04323B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an improvement in an electric wire manufacturing apparatus that cuts a covered electric wire to a predetermined size and performs terminal processing such as peeling off the insulation, twisting the core wire, and crimping terminals on both ends of the wire in a fully automatic manner. It is related to.

Conventionally, the first device developed as a device that pulled out a wire wound on a reel, cut it to any predetermined size, and performed various processing on both ends of the wire in a fully automatic manner. Therefore, in the case of long electric wires, the length of the entire device becomes long and the space required becomes large.

In order to improve this, the wire is bent into a loop and then terminated in a transfer line that is perpendicular to the wire feeding direction. JP-A-51-136186 and JP-A-Sho 51- disclose a device in which the electric wire is bent into a loop shape by advancing inside, and the guide plate is raised to move the electric wire on a pallet.
As described in Publication No. 147781 (Japanese Patent Publication No. 57-6676), when forming a wire into a loop, the wire is extruded to advance through a U-shaped guide plate, so hard wire or extremely soft wire is used. However, there are disadvantages such as buckling easily occurs in the wire feeding section and it is difficult to remove the treated wire from the transfer pallet.

In addition, the reversing body for forming a wire into a loop is equipped with a pair of semicircular cam plates and a set of two wire clamping claws placed opposite each other on the upper surface of the reversing body, which allows the creation of a single wire. JP-A-55-144672 discloses a device that not only opens and closes the gripping claws but also rotates the main body by 180 degrees and moves up and down.
Although it is compact as a reversing device, the internal structure is too complex because the operating mechanisms are all built-in and concentrated in one place with a small space, and it is not only difficult to assemble and adjust, but also difficult to assemble and adjust. It has become even more difficult to handle because it is sensitively affected by any disturbance.

In view of the above-mentioned current situation, the present invention aims to facilitate assembly, adjustment, and handling without losing the compactness of the device, and to obtain a product with good accuracy. A length measuring and feeding device that measures and feeds the electric wire in the feeding direction, a cutting device and a wire U-turn device that are sequentially arranged in front of the length measuring and feeding device in the feeding direction, and a wire U-turn device that cuts the length of the wire from below near the U-turn device. It consists of a transfer conveyor extending perpendicularly to the feeding direction and equipped with a plurality of wire gripping devices, and at least one type of terminal processing unit disposed along the length measuring and feeding device side of the transfer line of the conveyor. , the wire U-turn device is a U that is at the same height as the wire feeding axis and protrudes semicircularly in the feeding direction.
A turn guide plate, a U-turn roller assembly that can approach and leave the circumferential end surface of the U-turn guide plate and that can turn approximately 180 degrees and reciprocate along the circumferential end surface, and corresponds to the vicinity of both arc ends of the U-turn guide plate. The left and right lifting clamps are arranged so that they can be raised and lowered, and the clamp lifting body is configured such that they can be raised and lowered integrally. The operation of making the supplied electric wire follow the peripheral end surface of the U-turn guide plate by turning the U-turn roller assembly, gripping the vicinity of the tip of the electric wire by the right lifting clamp, and the actual length measurement of the electric wire by the length measurement and feeding device. Feeding, gripping the middle part of the electric wire by the left lifting clamp, cutting to a predetermined size by the cutting device, and raising the wire to the height of the transfer conveyor with the left and right lifting clamps gripping both ends of the loop-shaped cut electric wire. It is an object of the present invention to provide an electric wire manufacturing apparatus characterized in that a descending operation and an operation of the transfer conveyor receiving the loop-shaped cut electric wire from the left and right lifting clamps are sequentially performed.

This will be explained in detail with reference to the embodiments shown in the figures. For convenience of explanation, the left and right in FIG.
The left and right in FIG. 5 are respectively referred to as "left" and "right" or "upstream in the transfer direction" and "downstream in the transfer direction."

In FIG. 1, reference numeral 1 denotes a wire supply reel on which a wire 2 is wound.The wire 2 from the reel 1 passes through a guide roller 3 and a group of wire drawing rollers 4, and is then transferred to a set of two feed rollers 5, 5. The wire is fed forward by continuous rotation, passes through a guide roller 7 pivotally supported on the rear surface of the rear box 6, and is directed to a wire guide gripping device 8 and a length measuring and feeding device 9 provided on the upper surface of the rear box 6. Further, a slack detector 10 is provided between the feed rollers 5, 5 and the guide roller 7, and the feed rollers 5, 5 are increased/decelerated via a potentiometer (not shown) connected to the slack detector 10. The electric wire 2 in this section is always left slack by an appropriate amount.

In FIG. 2, the wire guide gripping device 8 is
A fixing base 11 is provided on the left upper surface of the rear box body 6 horizontally in the front-rear direction using appropriate brackets, and a sliding body 12 is fitted onto the fixing base 11 so as to be slidable in the front-rear direction. A pair of front and rear frames 13a, 13b
is erected, and a movable cylinder 14 is fixed between both frames 13a and 13b, and the movable cylinder 14 is externally inserted onto a guide rod 15 that is mounted on the front and back of the fixed base 11 so as to be freely movable back and forth. Further, a pair of flanges 16a and 16b are fixed to the movable cylinder 14 and are spaced slightly apart from each other, and a cam plate 17 is attached to the front of the flange 16a so as to be rotatable with respect to the movable cylinder 14.

In FIGS. 2 and 3, 18 is a support member whose base is fixed to the flange 16a and extends to the right;
A gripping block 19 is fixed to the front surface of the tip, and a pair of support blocks 21a and 21b are fixedly connected to the front surface of the gripping block 19 by two connecting rods 20 spaced apart from each other. The support block 21a, the gripping block 19, and the support block 21b support front and rear guide tubes 22a and 22b through the support block 21a, the gripping block 19, and the support block 21b along the wire feeding axis H extending in the front-rear direction. The support blocks 21a and 21b are slightly spaced apart from each other, and the front guide tube 22a extends an appropriate distance ahead of the support block 21a.

Reference numeral 23 denotes an electric wire clamp provided in relation to the cam plate 17, the gripping block 19 and the rear guide tube 22b.
4 is fixedly installed, and a through hole (not labeled) is formed in the left and right direction on the left side of the holding block 24, gripping block 19, and rear guide tube 22b, and the tip is inserted in the through hole in the vertical direction. An arcuately recessed pressing member 25, a buffer spring 26, and a pushing rod 27 are sequentially connected integrally and inserted. A compression spring 28 is wound between the left end flange of the push rod 27 and the holding block 24, and the spring force of the compression spring 28 constantly moves the actuating roller 29, which is pivotally supported on the left end flange, to the cam plate 17. The actuating roller 29 is brought into contact with the circumferential surface of the cam plate 17.
When engaged with the protrusion 17a, the tip of the pressing member 25 enters the rear guide tube 22b to press the electric wire 2 that can be inserted into the guide tube against the inner wall of the rear guide tube 22b and grip the electric wire 2. It has been done.

The length measuring and feeding device 9 has a pair of rotating shafts 31a and 3 that are spaced apart from each other on the left and right with the wire feeding axis H as a boundary and extend in the vertical direction on a pedestal 30 that is erected on the upper surface of the rear box body 6.
1b, and the lower end of the left rotating shaft 31a is connected to a motor M1 with a reducer installed in the rear box 6 via a clutch CL1 with a built-in brake.
Further, the lower end of the right rotation shaft 31b is connected to a length measuring device 32 having a built-in encoder. Both rotating shafts 31a and 31b are linked at the intermediate portion by a pair of gears 33a and 33b that mesh with each other.

34a and 34b are the respective rotating shafts 31a and 31b.
Each opening/closing arm 3 is attached to the upper end so as to be horizontally rotatable with respect to the rotation axis and extends horizontally forward below the gripping block 19 and support block 21b.
Length measuring feed rollers 35a, 35b are attached to the front ends of 4a, 34b so as to be horizontally rotatable. 36a, 3
Reference numeral 6b denotes a pair of gears which are rotatable with respect to each of the rotating shafts 31a and 31b and which are integrally attached to each of the opening and closing arms 34a and 34b and mesh with each other. The opening/closing operations of 35a and 35b are made.

36a and 36b are pulleys fixed to the rotating shafts 31a and 31b, 37a and 37b are pulleys fixed to the length measuring and feeding rollers 35a and 35b, and an endless belt 38a is provided between the pulleys 36a and 37a and between the pulleys 36b and 37b, respectively. , 38b are stretched, and the length measuring and feeding rollers 35a, 35b are rotated in opposite directions and at the same speed by the rotation of the rotating shafts 31a, 31b.

Therefore, the opening/closing arm 3 is held in a state where the entire wire guide gripping device 8 is in the most advanced position (the position shown in FIG. 2).
4a, 34b are closed, the length measuring feed rollers 35a, 35b are just aligned with the front and rear guide tubes 22a, 22.
The electric wire 2 approaching the separated part b and exposed there is held from both left and right sides, and the rotating shafts 31a, 31
The electric wire 2 can be fed forward by the rotational movement accompanying the rotation of b.

In FIGS. 2 and 4, 39 is the rear box body 6
A cutting device installed in the front box body 40 adjacent to the front of the
Supports a pair of rotating shafts 41a and 41b, and supports the rotating shafts 41a and 41b.
1a and 41b have gears 42 that mesh with each other.
a, 42b are fixed, and a pair of opening/closing arms 4 are fixed.
The lower end bases of 3a and 43b are fixed. Each of the opening/closing arms 43a, 43b extends upward from the opening (not numbered) of the front box body 40, and has cutter blocks 44a, 44b fixedly attached to the upper end thereof. Cutting blade 45
a and 45b are attached. Therefore, the cutting blades 45a, 4 are cut by the closing operation of the open/close arms 43a, 43b.
5b approach oppositely toward the wire feeding axis H, overlap, and cut the wire 2.

In Fig. 3, M2 is a motor with a reducer installed in the rear box 6, and a clutch CL with a built-in brake.
2, actuating mechanisms 46, 47, 48, including a chain sprocket mechanism and a cam mechanism, respectively;
49 opens and closes the length measurement feed rollers 35a and 35b, moves the wire guide and grip device 8, clamps the wire clamp 23, and cuts the cutting blades 45a and 45.
It performs the opening and closing operations of b.

In FIGS. 2, 3, and 5, 50 is a transfer conveyor extending in the left-right direction perpendicular to the wire feeding axis H in front of the cutting device 39,
A pair of sprockets 51, 5 pivoted on the left and right ends
An endless chain 52 is stretched between the endless chains 5 and 5.
2, a plurality of wire gripping devices 53 are attached at equal intervals.

The transfer conveyor 50 is operated by a clutch with a built-in brake by a motor M3 with a reducer installed at the left end.
The left sprocket 51 is rotationally driven through the CL 3 and the chain/sprocket mechanism 54, thereby causing the endless chain 52 to circulate in the clockwise direction in FIG.

As shown in detail in FIGS. 9 and 10, the wire gripping device 53 attaches a vertical rectangular mounting plate 55 to two adjacent link pins 52a, 52a of the endless chain 52.
An L-shaped support plate 56 bent forward at the upper part is fixed to the mounting plate 55. A guide roller 57 is pivotally supported on the lower surface of the upper horizontal end of the support plate 56, and the guide roller 57 is a guide track having a U-shaped cross section that extends integrally with a chain guide 58 fixed to the rear frame 50a of the transfer conveyor 50. The wire gripping device 59 is rotatably engaged with the wire gripping device 59 to prevent the entire wire gripping device 53 from shaking and falling down.

In FIG. 8, reference numerals 60a and 60b denote a pair of sector-shaped gears that are pivotally supported on the rear surface of the upper part of the support plate 56 at a distance from each other. The support plate 56
It is supported so as to be able to move up and down by a pair of left and right guide members 62 fixedly fixed to the rack, and the left and right rack portions are always engaged with gears 60a and 60b, respectively. 63 is pivotally supported.

Reference numerals 64a and 64b are a pair of left and right comb-like clamping claws protruding from the rear of the upper ends of the gears 60a and 60b, and a tension spring 65 is stretched between the left and right protrusions of the gears 60a and 60b, and Above against 63
The tension spring 65 moves both gears 60a and 6 as the actuating rod 61 moves up and down due to a downward external force.
It is displaced downward and upward from the line connecting the pivot points of 0b, and the clamping claws 64a and 64b are in the open and closed states.

In FIG. 5, reference numeral 66 indicates an electric wire U provided near where the electric wire feeding axis H crosses the transfer conveyor 50.
It is a turn device and consists of the following components.

In FIG. 3, reference numeral 67 denotes a U-turn guide plate fixed on a bracket erected on the upper surface of the right end of the front box body 40, which forms a semi-circular plate horizontally in front above the transfer conveyor 50. The electric wire feeding axis H passes near the left edge of the electric wire, and the stopping positions of the electric wire gripping device 53 on the upper transfer route of the transfer conveyor 50 are sequentially P1, P2, P3 from the left in FIG.
...P16, it is arranged so that the left and right edges of the semicircular plate are just above the stop positions P1 and P2.

In FIG. 3, 68 is an upper box installed on the upper frame 50b of the transfer conveyor 50, and from the upper box 68 in FIG. An operating shaft 69 is derived. Upper box 6 of the operating shaft 69
The upper end of the operating shaft 69 is connected to a motor M4 with a reduction gear via a clutch CL4 with a built-in brake, and a cam plate 70 is fixed to the lower end of the operating shaft 69.

In FIGS. 5, 6, and 7, reference numeral 71 denotes a swing arm 7 mounted above the cam plate 70 concentrically with and rotatably relative to the operating shaft 69.
Reference numeral 2 denotes a pair of wedge-shaped guide members fixed to the lower surface of the swing arm 71, into which the movable body 73 is fitted so as to be slidable in the horizontal direction passing through the center axis M. A cam follower 7 is provided on the lower surface of the base side of the movable body 73.
4 is supported, and the cam follower 74 is engaged with the cam groove of the cam plate 70.

In FIG. 5, reference numeral 75 denotes a U-turn roller assembly fixed to the lower end of a bracket 76 which is vertically disposed at the tip of the movable body 73, and is U-shaped when viewed horizontally within a box body 77 which is open on the side facing the central axis M. A shaped roller support 78 is loosely fitted, and between the upper and lower plates 78a and 78b of the roller support 78, a U-turn roller 79 with a V-shaped peripheral surface and narrowed in the center is pivotally supported for horizontal rotation. The tips of the upper and lower plates 78a and 78b extend beyond the U-turn roller 79, so that when the entire U-turn roller assembly 75 moves toward the central axis M, the upper and lower plates 78a and 78b extend above and below the U-turn guide plate 67, respectively. It is starting to polymerize. The roller support 78 has a buffering property in the direction of movement by a buffer spring mechanism 80 built into the box body 77.

Reference numeral 81 denotes a pinion which is concentric with the operating shaft 69 and rotatable with respect to the shaft, and which is fixed integrally with the swing arm 71. The pinion 81 is attached to the rack portion 82a of the movable rod 82 supported on the lower surface of the upper box 68 so as to be movable in the left and right direction. They are always engaged. The movable rod 82 has a clutch CL5 with a brake built in the upper box 68 connected to a motor M5 with a reduction gear via a cam drive mechanism 83, and the movable rod 82 reciprocates in the left and right direction by the drive of the motor M5. By moving the U-turn roller assembly 75, the U-turn roller assembly 75 rotates through approximately 180 degrees and reciprocates.

In FIG. 5, reference numeral 84 denotes a clamp elevating body provided on the rear surface of the upper box 68, and a cylinder 86 fixed on the upper front surface of the triangular elevating plate 85 is fitted onto the operating shaft 69 and moved along the operating shaft 69. Legs 85a, 85 are provided that can be raised and lowered freely, and extend downward at the left and right ends of the raising and lowering plate 85.
Left and right lifting clamps 87a and 87b are provided at the lower end of the clamp 87a and 87b, located directly above the stop positions P1 and P2, respectively.

The left and right lifting clamps 87a and 87b are each composed of a pair of opening/closing claws 88a and 88b, and are operated by a link type actuating mechanism 90a by rotary operating solenoids 89a and 89b fixed to the left and right rear surfaces of the lifting plate 85, respectively. , 90b, each opening/closing claw 88a,
The opening/closing movement of 88b is performed.

Further, the clamp elevating body 84 is raised and lowered by the motor M5 and the cam actuating mechanism 91 interposed between the clutch CL5 and the cylinder 86.
The right lift clamps 87a and 87b are in three positions: a high position above the U-turn guide plate 67, a middle position at the same height as the U-turn guide plate 67, and a low position corresponding to the stop positions P1 and P2 in FIG. positioning is possible.

In FIG. 5, 92a and 92b are opening/closing actuators for the wire gripping device 53 provided on the rear frame 50a corresponding to the stop positions P1 and P2,
Swing arms 92a2 and 9 that swing up and down by deenergization and excitation of solenoids 92a1 and 92b1, respectively.
2b2, and the wire gripping device 53 is at the stop position P.
1, P2, the roller 63 is located directly below the left rear protrusion of each swing arm 92a2, 92b2, and the swing arms 92a2, 92b2 rotate counterclockwise in FIG. The roller 63 is pushed down by swinging in the direction, and the clamping claws 64a and 64b are closed. Further, the wire gripping device 53 is
A fixed cam (not shown) fixed to the rear frame 50a at the right end of the transfer conveyor 50 pushes up the roller 63 when it pivots downward, opening the clamping claws 64a and 64b. There is.

In FIG. 1, reference numerals 93 to 101 denote terminal processing units and inspection units that are sequentially arranged from the right side of the electric wire U-turn device 66 on the rear side of the transfer conveyor 50, and each unit will be explained below.

Reference numeral 93 designates an electric wire uniform cutting unit provided corresponding to the stop position P3, which is equipped with a pair of upper and lower uniform cutting blades 93a that move vertically in opposing directions to perform opening and closing operations, and is capable of clamping the ends of the electric wires on the U-turn side. When the wire gripping device 53 reaches the stop position P3, the uniform cutting blade 93a
The opening/closing operation of the wire gripping device 53 cuts the ends so that the distance from the wire holding position of the wire gripping device 53 to the tip of the wire on the non-U-turn side (rear end side) is the same predetermined distance as the wire on the U-turn side. (Therefore, the electric wire trimming unit 93 is located at one of the transfer conveyors 50.
(Activates every time a pitch jump is made).

Reference numerals 94 and 95 designate a sheath stripping unit and a sheath stripping/twisting unit provided corresponding to the stop positions P4 and P5, respectively, and both of them move vertically in opposition to the wires 2 at a predetermined position from the tip of the wire 2 that can be held by the wire gripping device 53. It is equipped with a pair of upper and lower sheathing cutting blades 94a and 95a that cut into the sheathing of the electric wire 2 at a distance forward, and furthermore, by moving the entire unit rearward with the sheathing cutting blades in the closed state, the cutting is made. The coating on the tip side is peeled off from the tip. Of these, the coating stripping and twisting unit 95 further includes a coating cutting blade 95a.
A pair of upper and lower twisting rods 95b are provided at a position slightly rearward of the electric wire 2 that move vertically in synchronization with the cutting blade, and the twisting rods close at the time of making a cut in the coating and clamp the cut coating of the electric wire 2, When the unit moves backward to remove the coating, it moves left and right and rotates the coating scraps.
The core wires in this section are twisted. Both of the units 94 and 95 selectively operate one of the units 94 and 95 for each two end portions of the electric wires.

In addition, in relation to the units 94 and 95,
Two wire tightening devices 102 shown in FIG. 9 are provided. Each of the wire tightening devices 102 has a vertical bracket 102a protruding from the rear frame 50a, and a pressing member is provided on the rear surface of the bracket so as to be vertically slidable by a pair of left and right guide members 102b fixed to the bracket. 102c is provided, and the pressing member has an upper portion bent rearward at a right angle to form a pressing engagement portion 102c1.
is formed. 102d is a bracket 102a
The actuating arm has an intermediate bent portion pivotally supported on the right front surface thereof so as to be vertically swingable, and is connected to the lower end of the pressing member 102c by a pin 102e through a long hole provided at the tip of the long side. 102f is a solenoid fixed to the rear frame 50a on the right side of the bracket 102a, and its downwardly extending rod tip is connected to an elongated hole provided at the short side tip of the operating arm 102d.

Therefore, each wire tightening device 102 normally extends the rod by the force of the built-in spring by demagnetizing the solenoid 102f, and pushes up the pressing member 102c via the operating arm 102d. In this state, the wire gripping device 53 The roller 63 can pass below the pressing engagement portion 102c1 in the left-right direction. Then, the wire gripping device 53 moves to the stop positions P4, P.
5, the roller 63 is located directly below the pressure engagement portion 102c1, and when the solenoid 102f is excited in this state, the pressure member 102c is pushed down by the rod shortening operation, and the pressure engagement portion 102c is In order to engage the roller 63 and press the operating rod 61 downward, the clamping claws 64a, 6
4b is further biased in the closing direction and firmly tightens the electric wire 2. If the units 94 and 95 are operated in such a tightened state, there is no fear that the wire 2 that can be clamped by the wire gripping device 53 will be pulled out from the clamping claws 64a and 64b during the aforementioned coating stripping and twisting operations. .

Returning to Figure 1, 96, 97, and 98 are terminal crimping units with the same configuration provided corresponding to the stop positions P7, P9, and P11, respectively, and are dedicated to terminals with tubes, and three types of terminals are selectively used. It is set up so that you can do it. Each terminal crimping unit 96-98
is a pair of positioning claws 96a for positioning the electric wire,
97a and 98a, positioning claws 9 are provided for positioning the ends of the wires that can be held by the wire gripping device 53 immediately before crimping the terminals.
6a, 97a, 98a to hold the wire end straight, and from this state, the terminal tube insertion crimping members 96b, 97b, 98b move forward to insert the tip of the wire 2 into the terminal tube. The terminal is then crimped using a die (not shown).

99 is a terminal crimping unit dedicated to a terminal with an open terminal barrel provided corresponding to the stop position P12, a terminal is supplied to an anvil 99a, and a curved guide 99b above the terminal allows the terminal to be clamped by the wire gripping device 53. The end of the wire 2 is placed, and the crimping die 9 is inserted from above.
9c descends and crimps the end of the electric wire inside the barrel in a confined state.

The terminal crimping units 96 to 99 selectively operate one unit for each two end portion of the electric wire.

100 is a crimping condition inspection unit provided corresponding to the stop position P13, which the present applicant installed on February 5, 1981.
It has the same configuration as the "terminal crimping condition inspection device" disclosed in Japanese Patent Application No. 57-18054 filed in 1985, and to summarize, the laser beam from the light source passes through the condensing lens and polarizing plate in the projection section 100a for inspection. 100 units
Irradiate the terminal crimping part of the electric wire 2 placed on b,
The reflected light enters the image sensor through the polarizing plate and condensing lens of the light receiving system 100c, and the information from the image sensor is analyzed in the control unit 100d to judge whether the terminal crimping condition is good or bad for each type of terminal. be.

Reference numeral 101 denotes a normal state inspection unit, in which a pair of left and right flexible detection conductors 101a and 101b are suspended corresponding to stop positions P14 and P15, respectively, and both detection conductors are connected to a power supply 101c and an energization detection circuit 10.
They are connected via 1d. Therefore, when the two wire gripping devices 53, 53 that can hold one wire 2 stop at the stop positions P14, P15, the wires at each end are stripped of the sheathing, stripped of the sheathing, twisted bare wire, or If the various crimp terminals come into contact with the detection conductors 101a and 101b and the wire 2 is not disconnected in the middle, the conduction detection circuit 101d generates a conduction signal, and if it is disconnected, it generates a nonconduction signal, indicating that the wire is defective due to disconnection. I judge that.

Reference numeral 103 denotes a storage box for accommodating the terminal-treated electric wire 2 installed at the right end of the transfer conveyor 50. When the electric wire gripping device 53 reaches the stop position P16, the electric wire gripping device 53 opens the clamping claws 64a and 64b by the action of the fixed cam and removes the electric wire. 2 is released and dropped into the storage box 103 for storage.

Reference numeral 104 is a control device with a built-in microcomputer that comprehensively controls the entire wire manufacturing apparatus, and is equipped with a power switch, an emergency stop button, an alarm, and the like.

Reference numeral 105 denotes an operation console derived from the control device 104, and consists of an operation section 105a and a display section 105b, and the operation section 105a is equipped with a manual/automatic changeover switch, a group of manual switches, a numeric keypad, a start switch, a terminal processing selection switch, etc. It also has the ability to edit the length of the wires to be manufactured, the type of terminal treatment, the number of wires, etc., and create a program. That is,
For example, the length of each electric wire required for wiring one control panel, the necessity of core wire twisting and terminal crimping,
The number of types of terminals to be crimped and the number of wires can be programmed as one lot. In addition, the display section 105b
displays the contents of the program sequentially during the aforementioned editing work, and displays each stop position P1 to P15 during automatic operation.
It is designed to display the processing status of the electric wires in the area.

Next, the overall operation of the electric wire manufacturing apparatus having the above configuration will be explained.

First, referring to FIGS. 1 and 10, when the power switch of the control device 104 is turned on, the motors M1 to M
5 is driven, and each unit 93 to 101 is also ready for operation. However, the clutches CL1 to CL5 are in a disengaged state (brake applied state).

Next, as described above, the user operates the console 105 to edit the type and number of electric wires to be manufactured, and creates a program. Then, when the manual/automatic changeover switch on the console 105 is switched to the automatic side, each cam operating mechanism returns to its original position by turning on and off each clutch.

Now the entire wire manufacturing equipment can be operated at the time shown in Figure 10.
The initial state shown at t0 is reached (Figures 2, 11, and 19).
That is, the cutting blades 45a and 45b are open, the front and rear guide tubes 22a and 22b are in the forward position, and the front guide tube 22
The front end of a has reached near the left edge of the U-turn guide plate 67. The length measuring feed rollers 35a, 35b are closed between the front and rear guide tubes 22a, 22b, and clamp the electric wire 2 there. The wire clamp 23 is in an open state with the pressing member 25 pulled out from the rear guide tube 22b. Further, since the U-turn roller assembly 75 is in its original position facing the left edge of the U-turn guide plate 67, and the cam follower 74 is engaged with the most protruding position a of the cam plate 70, the U-turn roller 79 It is in an open state far away from the end face of the guide plate 67 (FIG. 19). Further, the clamp elevating body 84 is at a high position, and both the left and right elevating clamps 87a and 87b are open.

When the start switch on the operation console 105 is then pressed, the operation shifts to sequential times t0 to t26.

Time t0...Clutch CL3 enters and drives the transfer conveyor 50 one pitch (wire gripping devices 53, 5
3 pitches is called 1 pitch).

At the time when the transfer conveyor 50 is driven half pitch from time t1 to t2..., the timer causes the clutch CL4 to be activated.
is inserted, and the cam plate 70 rotates counterclockwise in FIG. Then, the cam follower 74 engages with the intermediate protruding position b of the cam plate 70, and the U-turn roller 79 is in a half-open state slightly approaching the end surface of the U-turn guide plate 67 (Fig. 20), and at this time, the upper and lower plates 78a , 78b is the U-turn guide plate 67
cover above and below.

Time t2→t3...The clutch CL11 is engaged, the length measuring feed rollers 35a and 35b rotate, and the electric wire 2
Perform preliminary length measurement feeding. As a result, the electric wire 2 is moved from the front guide tube 22a to the U-turn roller 79 and the upper and lower plates 7.
8a, 78b, and the end face of the U-turn guide plate 67, and extends forward through the space surrounded by the end face of the U-turn guide plate 67, and when the length measuring device 32 has measured the preliminary length measurement feed length La (shown in FIG. 2. Stop the preliminary length measurement feed (Fig. 12).

Time t3→t4...1 of the aforementioned transfer conveyor 50
The pitch drive is completed, and the two wire gripping devices 53, 53 in the open state stop at the stop positions P1, P2.
(Figure 12). Also, the cam follower 74 is connected to the cam plate 70.
(Fig. 21), the U-turn roller 79 further approaches the U-turn guide plate 67, and the V-shaped peripheral surface of the U-turn roller 79 guides the electric wire 2 in a U-turn. Press it against the end surface of the plate 67.

Time t4→t5...U-turn roller assembly 75
is rotated 180° clockwise in Figure 2.
At this time, since the cam follower 74 moves between bottom positions c and d of the same radius of the cam plate 70 (two-dot chain line in FIG. 21), the U-turn roller 79 moves along the semicircular end surface of the U-turn guide plate 67. rolling, the front part of the electric wire 2 is wound in a semicircle along the semicircular end surface,
The tip of the electric wire 2 extends rearward from the right edge of the U-turn guide plate 67 (FIG. 13).

Time t5 → t6 → t7...Clamp elevating body 84
is lowered to the middle position (time t6), and the right lifting/lowering clamp 87b is closed by the excitation of the solenoid 89b, and clamps the tip of the electric wire 2 (time t7).

Time t7→t8...At time t7, the clutches CL2, CL4, and CL5 are once disengaged. Then, the clutch CL1 is inserted, and the length measuring feed roller 35a,
35b rotates to carry out the actual length measurement feeding of the electric wire 2. Then, when the length measuring device 32 measures the main length measurement feed length Lb (shown in FIG. 24), feeding is stopped (FIG. 14).

Time t8→t9...When time t8 is reached, the clutches CL2, CL4, and CL5 are engaged again. Immediately, the wire clamp 23 closes and the wire 2
to be fixed.

Time t9→t10...Length measurement feeding roller 35a,
35b opens.

Time t10→t11...The wire guide gripping device 8 retreats to the intermediate position, and the front end of the front guide tube 22a is located slightly behind the left lifting clamp 87a. (FIG. 15) Time t11→t12...The left lifting clamp 87a closes and clamps the electric wire 2 due to the excitation of the solenoid 89a (FIG. 15).

Time t12→t13...The U-turn roller assembly 75 moves to the right due to the action of the cam plate 70, and the U-turn roller assembly 75 moves to the right.
The turn roller 79 returns to its original open state and releases the electric wire 2 (FIGS. 16 and 22). Also, the wire clamp 23 opens.

Time t13→t14...The wire guide gripping device 8 moves backward from the intermediate position to the retreat position at a retreat distance Lc (shown in FIG. 25), and the front end of the front guide tube 22a is moved from the cutting blades 45a, 45b. It is located slightly behind (Figure 16).

Time t14 → t15 → t16...The wire clamp 23 closes again to fix the wire 2, and at the same time, the cutting blades 45a and 45b perform opening and closing movements to cut the wire 2 to the desired cutting length L (=preliminary length measurement feed length) La+main measurement feed length Lb+retraction distance Lc) (Fig. 16). FIGS. 23, 24, and 25 are drawings corresponding to FIGS. 13, 14, and 16, respectively, and these drawings show the cutting length L, the preliminary length measurement feed length La, The relationship between the main length measurement feed length Lb and the retreat distance Lc is shown.

Time t16→t17...The clamp elevating body 84 descends to a low position, and the left and right elevating clamps 87a, 8
7b is the wire gripping device 5 at the stop positions P1 and P2.
It is located at the same height as 3,53.

Time t17→t18→t19...Solenoid 9
By excitation of 2a ₁ and 92b ₁ , the stop positions P1 and P2
The wire gripping devices 53, 53 located at are operated to close,
Both ends of the cut electric wire 2 that can be held by the left and right lifting clamps 87a and 87b are clamped. Thereafter, the solenoids 89a and 89b are immediately demagnetized, the left and right lifting clamps 87a and 87b are opened, and the electric wire 2 is released (FIG. 17). Also, during this time, the U-turn roller assembly 75 rotates back to its original position. At this time, the cam plate 7
0 also rotates back to its original position and returns to the state shown in FIGS. 18 and 19.

Time t19→t21...The clamp elevating body 34 rises and returns to the high position.

Time t20→t22...The clamp elevating body 8
4 reaches above the middle position, at time t20, the wire guide and grip device 8 moves back to its original forward position. Furthermore, the clutch CL3 is engaged to start driving the transfer conveyor 50 one pitch.

Time t22 → t23 → t24...The length measuring feed rollers 35a and 35b are closed, and the front and rear guide tubes 22a,
The wire 2 between the wires 22b is clamped, and the wire clamp 23 opens to release the wire 2 (FIG. 18).

Time t25→t26...The aforementioned transfer conveyor 50
The 1-pitch drive is completed. The tip of the electric wire 2 on the U-turned side is then presented to the electric wire trimming unit 93 at the stop position P3 (FIG. 18), and the unit 93 operates to cut the tip of the electric wire 2 evenly. As a result, the positions of both ends of the cut wire 2 are accurately equidistant from the clamping position of each wire gripping device 53, and subsequent precise terminal processing becomes possible. And from time t25 all units 9
3 to 101 pass through the minimum period required to complete their operations, time t26 (=t0) is reached, and one cycle of wire manufacturing is completed.

By repeating the above cycle from time t0 to t26, the electric wires 2 of various cut lengths are sequentially transferred in a loop shape by the transfer conveyor 50, and each end of the electric wire 2 is placed at the stop positions P4, P5, P7, P9, P1.
1. At P12, each unit 94 to 99 operates in response to a command from the control device 104 to selectively perform coating stripping, coating stripping, core wire twisting, and various terminal crimping, and finally to the stop position P13 and At P14 and P15, the crimping state detection unit 100 and the energization state inspection unit 101 are activated, respectively.
The crimped terminals are inspected to ensure that they are in good crimped condition and that all wires are not disconnected.At the stop position P16, the wire gripping device 53 opens and the wires are placed in the storage box 103 as a completed product. The fall is contained.

Each of the aforementioned units 94 to 101 is a transfer conveyor 5.
Every time the 1-pitch drive of 0 stops, that is, time t3→
It operates selectively at time t7 and time t25→t26, and when either of the inspection units 100, 101 detects a defective wire, the information is sent to the control device 104, which issues an alarm and sends an alarm to the operation console. The display section 105b of 105 displays which electric wire is defective and why ("terminal crimping failure" or "wire breakage") and causes an emergency stop when time t7 or time t26 is reached.

As described in detail above, according to the electric wire manufacturing apparatus of the present invention, the electric wire fed by the length measuring and feeding device is turned into a loop shape by the cooperation of the U-turn guide plate, the U-turn roller, and the lifting clamp. In this state, the wire is cut to a predetermined size, and two elevating clamps that can grip both ends of the loop-shaped cut wire descend to hand the wire to the wire gripping device of the transfer conveyor. Since the U-turn mechanism of the is separated from the transfer conveyor, U-turn operations can be performed even while the transfer conveyor is running.
The processing capacity can be greatly increased by shortening the cycle time, and various terminal processing units installed on the length measuring and feeding device side of the transfer conveyor allow the desired terminal processing to be applied to each end of the wire during transfer. As a result, it is only necessary to place the untreated end unit on one side of the transfer conveyor, which saves the installation space around the transfer conveyor.The wire length can also be changed arbitrarily, and not only the wire length but also the terminal treatment form can be changed individually. The wire terminals can be set in advance, and various miscellaneous wires required for each control panel can be manufactured as one lot, making it possible to fully automate high-mix, low-volume production in particular.

[Brief explanation of drawings]

Each of the drawings shows an embodiment of the present invention. Fig. 1 is an overall perspective view of an electric wire manufacturing apparatus that employs the apparatus of the present invention, and Fig. 2 is a diagram showing an example of electric wire feeding, U-turn,
A plan view of the part to be cut, Figures 3, 4, and 5 are views taken in the direction of the arrows in Figure 2, and Figure 6 is a plan view taken in the direction of the arrows in Figure 5.
FIG. 7 is an enlarged sectional view taken in the direction of the arrow in FIG.
Fig. 8 is a detailed view of the wire gripping device, Fig. 9 is a side view taken in the direction of arrows in Fig. 8, Fig. 10 is a time chart, Figs.
Figure 22 is an explanatory diagram of the operation of the wire U-turn device part, and Figures 23 to 25 are explanations showing the relationship among the cutting length L, preliminary measurement feed length La, main measurement feed length Lb, and retreat distance Lc. It is a diagram. In the figure, 8 is a wire guide gripping device, 9 is a length measuring and feeding device, 39 is a cutting device, 50 is a transfer conveyor, 53
is a wire gripping device, 66 is a wire U-turn device, 67
is a U-turn guide plate, 79 is a U-turn roller, 87
a and 87b are left and right lifting clamps.

Claims (1)

[Claims] 1. A length measuring and feeding device that is equipped with a length measuring means and feeds the electric wire from the electric wire supply source in the feeding direction, a cutting device and the electric wire U that are sequentially arranged in front of the length measuring and feeding device in the feeding direction. a turn device, a transfer conveyor extending from below near the wire U-turn device in a direction perpendicular to the feeding direction and equipped with a plurality of wire gripping devices; a transfer conveyor along the length measurement feeding device side of the transfer line of the transfer conveyor; The wire U-turn device includes a U-turn guide plate that is at the same height as the wire feeding axis and protrudes semicircularly in the feeding direction; A U-turn roller assembly that can approach and leave the circumferential end surface of the turn guide plate and that can turn and reciprocate approximately 180 degrees along the circumferential end surface; A clamp elevating body is provided with a right elevating clamp that can be raised and lowered so that it can be raised and lowered integrally, and the length measuring and feeding device carries out a preliminary length measurement of the electric wire, and the electric wire that has been fed the preliminary length is transferred to the U. The turn roller assembly is rotated to follow the circumferential end surface of the U-turn guide plate, the right elevating clamp grips the vicinity of the tip of the wire, the length measuring and feeding device feeds the wire for the main length measurement, and the left elevating clamp gripping the intermediate portion of the wire by the cutting device, cutting to a predetermined size by the cutting device, lowering the left and right lifting clamps to the height of the transfer conveyor while gripping both ends of the loop-shaped cut wire; An electric wire manufacturing apparatus characterized in that a transfer conveyor sequentially receives the loop-shaped cut electric wires from the left and right lifting clamps.