JPS645406B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wire sheath removal and delivery device,
More specifically, a long insulated wire is measured to a predetermined length and sent out, then cut and stripped (removal of the insulation coating), and the cut short wire is cut in a direction perpendicular to the sending direction. The present invention relates to an electric wire sheath removal and feeding device in a wire processing apparatus that transports electric wires to a wire, press-bonds electrical connectors, and manufactures electric wires necessary for wiring.

The present applicant previously filed a patent application No. 54-52051.
A wire supply device that supplies and measures the length of the wire, a reversing device that grabs one end of the supplied wire and reverses it in the direction of wire delivery and turns the wire into a loop; We have proposed an electric wire processing device that includes a cutting device that cuts the other end, and a conveyance device that grasps both ends of the cut wire and moves the wire in a direction perpendicular to the axis of the wire.

However, although the above-mentioned apparatus is suitable for processing relatively long electric wires, for example, 1 m or more,
It is unsuitable for processing short length electric wires. Also,
Since the process is aimed at processing relatively long electric wires, the equipment becomes large and it is difficult to maintain the same dimensional accuracy of the electric wires to be cut into short lengths.

In view of the above-mentioned points, the present invention improves the wire sending device so that it can not only send out the wire but also strip the wire by cooperating with other devices, thereby making it possible to handle relatively short wires. This allows high precision and rapid processing, and the overall size of the device can be reduced.

That is, the wire sheath removal and feeding device according to the present invention is installed between a wire measuring device and a wire cutting device, and feeds out the wire that has been measured to a predetermined length, loosened, and fastened. It consists of a pair of pinch rolls and a clamp slider that is provided so as to be able to move forward and backward along the wire sending direction. The present invention is characterized in that it has a clamp stand that is displaced by the user and has an electric wire insertion hole, and an electric wire clamp that is inserted into the clamp stand so as to be movable up and down.

This invention will be explained below based on the drawings.

FIG. 1 is a plan view of the wire processing device. The device 1 includes a wire measuring device 2, a wire sheath removal/feeding device 3, a cutting device 4, a wire holding and conveying device 5, and an electrical connector crimping device 6. 3 constitutes an electric wire stripping device in cooperation with the electric wire holding and conveying device 5, as will be described later. The devices 2 to 4 described above are arranged on the frame 8 along the wire delivery path, while the devices 5 and 6 are arranged in a direction perpendicular to the wire delivery path. Reference numeral 7 denotes an operation control section of the wire sheath removal/feeding device 3 to the wire holding and conveying device 5.

The electric wire 9 paid out from a reel (not shown) passes through two sets of strainers 10 and 11 arranged orthogonally, and then passes through a guide roll 12 and a flat roll 13.
A pair of measuring rolls 14 and 15 facing each other
After passing through the gap and loosening into a loop,
The wire is sent to a cutting/notching device 4 and a wire holding/conveying device 5 by the wire sheathing/feeding device 3 .

As shown in FIG. 2, the measuring rolls 14 and 15 are arranged below the flat roll 13 so that the electric wire 9 can be sent out vertically downward. Knurls are carved on the outer peripheral edges of the measuring rolls 14 and 15 to prevent slipping. Also, one measuring roll 1
4 is pivotally supported by one arm 17 of a bell crank pivotally connected to the roll mounting plate 16. This arm 17 is urged toward the measuring roll side by a spring 19 that expands and contracts with the adjuster screw 18.
The pressing force on the electric wire 9 passing between the length measuring rolls 14 and 15 is adjusted by. 3 rolls 1
3, 14, and 15 are gear-driven and synchronously driven by a print motor (not shown), and the motor is equipped with an encoder to enable accurate length measurement.

The wire sheath removal/feeding device 3 includes a pair of pinch rolls 20, 21 for feeding out the wire 9, and a clamp slider 22 that can move forward and backward in the wire feeding direction. On both ends of the clamp slider 22,
As shown in FIG. 3, a gutter-shaped clamp base 24 with a wire insertion hole 23 is fixed, and the clamp base 24
An electric wire clamp 26 is inserted into the central recess 25 so as to be movable up and down. That is, the wire clamp 26 is attached to the upper end.
The clamp pin 27 that is screwed extends downward through the pin hole 28 and the spring chamber 29, and its lower end is screwed to the mounting frame 31 equipped with the driven roller 32, and the spring 30 is installed in the spring chamber 29. It has been intervened. 33 is a support stand for the driven roller 32, and when the bell crank 34 pivoted on the support stand 33 rotates in the direction of the arrow 35, the crank pin 27 descends due to the elastic force of the spring 29, and the wire clamp 26 closes. ,
The electric wire 9 is clamped and fixed between the clamp stand 24. FIG. 3 shows the wire clamp 26 in an open state.

The opening/closing of the wire clamp 26 and the forward/backward movement of the clamp slider 22 are respectively controlled by a third cam 76 and a second cam of the operation control section 7, which will be described later.

The cutting device 4 includes a pair of cutter holders 37 that slide toward and away from each other at right angles to the wire sending direction, and a cutter head 38 that supports and guides the cutter holders 37. As shown in FIG. 4, the cutter holders 37, 37 are connected by links 41, 42 that respectively connect their shoulders 39 and two diametrical points of a disc cam 40 pivotally attached to the center of the lower part of the cutter head 38. When the disc cam 40 rotates clockwise, the cutter holders 37, 37 approach each other. A plurality of mounting grooves 43 are provided in parallel on the cutter holder 37, and one set of wire cutters 44, 44 and two sets of insulated cutters 4 with appropriate intervals on both sides thereof are provided.
5,45 are installed. Note that a chip drop 46 is provided protruding from the lower end of the insulator cutter 45.
The cutting and cutting of the electric wire 9 by these cutters 44 and 45 is performed by the first cam 7 of the operation control section 7 which is connected to a link mechanism including a toggle crank 47 pivoted to one shoulder 39 of the cutter holders 37 and 37.
Controlled by 4.

The wire holding and conveying device 5 includes a swing plate 48 that is orthogonal to the wire sending direction and tilts forward on the sending side, and a plurality of chain clamps 49 attached to the swing plate 48.
It is equipped with

The rocking plate 48 has an oblong front plate 50 and a rear plate 51 facing each other at a predetermined distance in the upper part, and the lower proximal end 52 is pivotally attached to a support bar 53 as shown in FIG. One end of a swing link 55 is pivotally attached to a mounting block 54 fixed to the upper center of the front side plate 50, and is tilted forward by a predetermined angle as the link 55 expands and contracts. This swing link 55 is controlled by a second cam 75 of the operation control section 7, which will be described later.

The chain clamp 49 is fixed to the chain 56 at a predetermined interval, and the chain 56 is stretched over two sprockets 57, 57 pivotally mounted inside the swing plate 48. By rotating one of the sprockets 57 via bevel gears 58, 58 by a motor (not shown), the chain clamp 49 is intermittently moved a certain distance.

As shown in FIG. 6, this chain clamp 49 includes two opposing claw holders 59, 59 fixed to the chain 56, a pair of clamp claws 60,
60 and more. The clamp claw 60 has a dogleg shape, and has a concave and convex portion 6 on the opposing surface of the upper end for clamping the electric wire.
1 is formed, the proximal end of which is pivotally connected between the claw holders 59, 59 by a pin 62. Also,
Teeth 63 that engage with each other are carved on the outer periphery of the base end, and a compression coil spring 65 is interposed between the end of the claw holder 59 and a knock pin 64 pivotally connected to the central bent portion of the tooth, and the clamp claw 60, 60 are configured to be closed under normal conditions. The knock pin 64 protrudes from the opening 66 of the front claw holder 59.

Reference numeral 67 is an operation plate that elastically presses the knock pin 64 to tighten the clamp claws 60, 60, and is a guide 7 fixed to the front side plate 50 of the swing plate 48.
1 so that it can swing freely. That is, the operation panel 6
7 has a spring chamber 68 in which a compression coil spring 69 is housed inside, and one end of an increase link 70 is loosely fitted in the lower interior so as to be slidable toward the spring chamber 68. Therefore, when the link 70 extends upward, the tip of the operation plate 67 comes into contact with the knock pin 64 and the clamp claws 60, 60 are tightened, but the excessive force is absorbed by the repulsive elastic force of the compression coil spring 69, and the electric wire Even if the diameter of the wire 9 changes in size, it can be retightened easily and reliably. This link 70 is controlled by a fourth cam 77 of the operation control section 7.

Since the electrical connector crimping device 6 can be used as an ordinary small-sized device, its explanation will be omitted.

The operation control unit 7 includes a cam main shaft 73 rotated by a bevel gear 72 and a first cam main shaft 73 fixed to the main shaft 73.
It includes a cam 74, a second cam 75, a third cam 76, and a fourth cam 77.

These cams 74 to 77 are recessed with cam grooves having different phases in accordance with the operation time of the wire sheath removal/feeding device 3 to the wire holding and conveying device 5, and a set link whose one end engages with this cam groove is provided. The other end is connected to the devices 3 to 5. That is, the first cam 74 is connected to the toggle crank 47 of the cutting device 4 by the cutting link 78, and the second cam 75 is connected to the clamp slider 22 of the wire sending device 33 by the slide link 79 and the sliding link 55. Moving plate 48
The third cam 76 is connected to the bell crank 34 of the wire sheathing/feeding device 3 by a wire clamp link 80, and the fourth cam 77 is connected to the operation plate 67 by a retightening link 70.

Next, the operation and effects will be explained with reference to FIGS. 7a to 7h.

(1) Measurement and fastening of electric wires (Fig. 7a) The continuous long electric wires 9 are separated by a strainer 10,
11, the wire is removed by a pair of measuring rolls 14 and 15, the length is measured, and the wire is sent vertically downward. be kept in.

In the case of this measuring device 3, compared to conventional ones, there are fewer rollers and the structure is simpler.
For example, since the electric wire 9 is not wound around the measuring roll 14, the wire diameter of the electric wire has no effect on the wire length. The measuring rolls 14 and 15 are pressed and taken up and sent out following their rotation, and as mentioned above, the drive motors of the measuring rolls 14 and 15 are integrated with the measuring encoder.
There is no influence from the inertia of the measuring rolls, and slips during starting and stopping can be ignored.Since the electric wire 9 is sent out directly below the measuring rolls 14 and 15, only a small amount of space is required for fastening the electric wires. Therefore, the distance between the wire measuring device 2 and the wire sheath removal and sending device 3 is reduced,
There are advantages such as helping to reduce the size of the device as a whole.

(2) Pinch roll feeding of electric wire (Fig. 7b) The electric wire 9 held in a loop shape is transferred to the pinch rolls 20 and 21 of the wire sheath removal and feeding device 3.
The wire is sent to the cutting device 4 and the wire holding and conveying device 5.

At this time, the wire clamp 26 of the device 3, the device 4
cutter head 37 and rocking plate 48 of the device 5
The chain clamp 49 located on the right end side of
Everything is open.

(3) Clamping the electric wire (Fig. 7c) When the electric wire 9 of a predetermined length is sent out by the pinch rolls 20 and 21, the electric wire clamps 26 and 26
Then, the chain clamp 49 closes and clamps the electric wire 9 on both sides of the cutter head 38.

That is, due to the rotation of the third cam 76 and the fourth cam 77, the wire clamp link 80 and the retightening link 7
0 is displaced. As a result, the wire 9 passing through the wire insertion hole 23 of the clamp stand 24 is inserted into the wire clamp 26.
The electric wire 9, which is held between the base 24 by the lowering of the holder 24, and which is located between the pair of clamp claws 60 and 60, is then moved by the elastic force of the compression coil spring 65 and then by the compression coil spring 69 and the operation plate 6.
It is clamped and retightened by 7. in this way,
When clamping the wire, both the wire clamp 26 and the clamp claw 60 are held elastically by the spring, so that the wire can be securely fixed without damaging the insulation coating of the wire.

(4) Cutting and notching the electric wire (Fig. 7d) With the electric wire 9 held on both sides by the wire clamp 26 and the clamp claw 60, the cutting device 4 operates to cut the electric wire and cut the skin. A cut is made into the insulation coating.

That is, the rotation of the first cam 74 displaces the cutting link 78 and rotates the toggle crank 47. As a result, a pair of wire cutters 44 and two pairs of insulator cutters 45 approach from both sides in the direction orthogonal to the electric wire 9, and the electric wire 9 is cut and incised.

(5) Stripping the wire (Fig. 7e) When the wire has been cut, the clamp slider 22 and the swing plate 48 move along the arrows 81 and 8, respectively.
Moving away to the 2nd side, the wires are stripped.

That is, with the two sets of insulator cutters 45 cutting into the insulation coating of the electric wire 9, the slide link 79 and the swing link 55 are respectively displaced by the rotation of the second cam 75. As a result, the clamp slider 22 moves in the direction of the arrow 81, the rocking plate 48 rotates and tilts by a predetermined angle in the direction of the arrow 82 about the support bar 53, and the long electric wire 9 and the cut electric wire The terminal 9' is stripped.

(6) Conveying the electric wire and retracting the cutter (Fig. 7f) When the wire has been stripped, the cutter holder 3 is moved by the same mechanism as described above by the rotation of the first cam 74.
7 and 37 move back, and the cutters 44 and 45 open.

At the same time, the swing plate 48 is in an inclined state, and the chain 56 is rotated by the sprocket 57 that rotates following the bevel gear 58, and the chain clamp 49 holding the electric wire 9' moves one pitch, and the center of the swing plate 48 is rotated. Located in

(7) Return of the clamp slider 22 and the rocking plate 48 (Fig. 7g) From the middle of the operation in (6), the clamp slider 22
and the swing plate 48 approaches the cutting device 4 side (2)
Return to position and prepare for sending out the next wire. At the same time, the wire clamp 26 and the chain clamp 49 are in an open state. These operations are performed by the same mechanism as described above, so the explanation will be omitted.

(8) Crimping of electrical connectors (Fig. 7h) The electric wire 9'', which has been stripped in advance by the electric wire conveyance in (6), is located on the left end side of the rocking plate 48, and is crimped by the crimping device 7. The electrical connector 83 is crimped and fixed.This operation is performed using the pinch roll 2 of the device 3 in (2).
This is carried out from the time when the wire is sent out by the wires 0 and 21 until the time when the wire is stripped by the second cam 75 in step (5).

By sequentially repeating the following operations (1) to (8), measuring the length of the electric wire, sending it out, cutting it and stripping it, and crimping the electric connector after being transported are performed continuously. These operations are incorporated into one revolution of the cam main shaft 73, and in the embodiment of the present invention, one revolution of the main shaft 73 is a 0.6 second cycle, and it is possible to process 6000 wires per hour up to a wire length of 600 mm.

As described above, the above invention includes a pair of pinch rolls, which are provided between the wire measuring device and the wire cutting and cutting device, and feed out the wire that has been measured to a predetermined length, loosened, and fastened; It consists of a clamp slider that is provided to move forward and backward along the wire sending direction, and the clamp slider is displaced with respect to the pinch roll with the pinch roll positioned in the middle at both ends in the wire sending direction, and the wire is inserted. Since it has a clamp stand with a hole and a wire clamp inserted into the clamp stand so that it can be raised and lowered,
A pair of pinch rolls make it possible to quickly feed out the wire, and a clamp slider with a wire clamp is provided so that it can move forward and backward along the wire feeding direction, making it useful for stripping the wire. , has the feature that the electric wire can be moved back in a straight line without bending when the clamp slider moves backward.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the entire electric wire processing device according to the present invention, Fig. 2 is an enlarged front view of the electric wire measuring device, and Fig. 3 is an electric wire sheath removal and feeding device showing an embodiment of the present invention. Fig. 4 is an enlarged front view of the cutting device, Fig. 5 is an enlarged front view of the wire holding and conveying device, Fig. 6 is an enlarged front view of the chain clamp, and Fig. 7 is an enlarged front view of the wire processing device. It is an explanatory diagram of a process. 3...Wire sheath removal and delivery device, 20, 21
...Pinch roll, 22...Clamp slider,
23...Wire insertion hole, 24...Clamp stand, 26
...Wire clamp.

Claims (1)

[Claims] 1. A pair of pinch rolls are provided between the wire measuring device and the wire cutting and cutting device, and feed out the wire that has been measured to a predetermined length, loosened, and fastened; The clamp slider is provided with a clamp slider that is movable forward and backward, and the clamp slider is displaced with respect to the pinch roll with the pinch roll positioned in the middle at both ends in the feeding direction of the wire, and a clamp base having a wire insertion hole opened. An electric wire sheath removal and feeding device characterized by having an electric wire clamp inserted into the clamp table so as to be movable up and down.