JPS63121282A - Method and apparatus for processing wire terminal automatically - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an automatic wire terminal processing method and apparatus.

(Conventional technology) Previously, this type of method and device were unknown.

Various processes such as stripping, twisting, and crimping are necessary for crimping the bare light type terminal and the wire end. Stripping is necessary to remove the coating, twisting is necessary to prevent the core wire from coming apart and maintaining straightness, and crimping is necessary to secure the terminal barrel and wire end to prevent the wire end from coming off the terminal. Conventionally, the above-mentioned steps have been carried out individually, that is, only the stripping and the crimping of the stripped material have been carried out separately using separate devices. However, if each step is performed through separate preparation steps, it takes time to set the wires and terminals, which is inefficient and puts a heavy burden on the worker.

(Problem to be solved by the invention) The present invention does not perform the process for crimping the terminals of electric wires individually, but by one-touch (a single set of electric wires and terminals).
The object of the present invention is to provide a method and apparatus that can be completed in the following manner.

(Means for Solving the Problems) According to the present invention, the above problems are solved by the configurations set forth in claims 1 and 2.

(Effects of the Invention) According to the present invention, it is possible to improve the work efficiency of terminal crimping, stabilize the quality of connection performance after crimping, and simplify operation, and achieve miniaturization and weight reduction of the processing device itself. As a result, the device of the present invention can be advantageously used in various electrical installation works.

(Example) The present invention will be explained based on FIG. 1, FIGS. 2a to 2j, FIG. 3, and FIG. 4.

(Structure) A deceleration motor 2 with a one-turn clutch is mounted on a base l. AClooV is used as a power source. The motor shaft 2a has a pinion 3, and gears 3 and 4 that mesh with the pinion 3 are coaxially fixed to the main shaft 5. Main shaft 5
is moved by the arrow A by the bearing unit 6 fixed on the base 1.
It is rotatably supported in the direction. The main shaft 5 includes grooved cams 7b, 71, external cams 7a, 7C17d, 7e,
7f, 7g, 7h, and 7j are fixed non-rotatably.

According to FIG. 1 and FIGS. 2a to 2j, the following configuration is clear.

According to FIG. 2a, the wire clamp has a roller 12 at one end so as to abut the wire clamp cam 7a on the main shaft 5.
A driven joint 11 marked with is rotatably supported on a shaft fixed to a bracket (not shown) on the base 1, and is biased by a spring 13, and the other end of the driven joint 11 is A bin 14 is provided. The wire clamp is mounted on a shaft 15 disposed parallel to the main shaft 5 over the base 1, in the axial direction B.
The lever 17 engages with a forked portion 17a of a lever 17 which is pivotally fixed to a chuck slide 16 which is movably disposed on the chuck slide 16. The chuck slide 16 can also be guided by the bracket 1a on the base 1. Besides using the spring 13 for the contact between the cam 7a and the driven link 11, it is also possible to use two cams in the form of positive cams to completely constrain the movement of the driven link 11 of the wire clamp. . A pinion 18 integral with the lever 17 is rotatably fixed to the chuck slide 16, and another pinion 19, which is similarly fixed to the chuck slide 16, meshes with this pinion 18. Pinion 18.19
A clamp jaw 20.21 is fixed to the clamp jaw 20.21, and the clamp jaw 20.2 is opened and closed by rotation of both binions.

According to FIG. 2b, the pin 22 fixed to the lower surface of the chuck slide 16 engages the fork-shaped portion 23a at one end of the lever 23, which is pivoted to a bracket (not shown) on the base l, and the other end of the lever 23 is engaged. The end engages with the groove of the grooved cam 7b via the roller 24.

According to FIG. 2C, a strip plate 25.26 is shown, and next to the strip plate 25.26? m25a,
Roller 27.28 engages in 26a, and roller 27.28
is fixed to the driven joint 29.30, and the roller 31.32 at the other end of the driven joint is in contact with the cams 7c, 7Ct. Cams 7C+ and 7Cz together form one cam 7C.

The driven joints 29 and 30 are pivoted to brackets (not shown) on the base 1. Both reversing joints 29, 30 are always biased by springs 33 so that the rollers are pressed against the cam surface. It is also possible to positively restrain the opening and closing movement of the strip plate using an integrated lever without using a spring. The strip plates 25, 26 move in the direction of arrows C, Cg or in the opposite direction.

The twist drive is shown in Figure 2d, with the knurled surface 35a
, 36a are slidably engaged in the transverse grooves 25b, 26b of said strip plate 25.26. The upper jaw 35 and the lower jaw 36 are pinned to a lever 39 via links 37 and 38, and the lever 39 is pivoted to a bracket (not shown) on the base 1, and the lever 39 has rollers 40 and 41 at both ends. In preparation, rollers 40 and 41 are each cam? It is in contact with cL 17dz.

As a result, 35.36 points to arrows 7d+, 7dz
or in the opposite direction.

According to FIG. 2e, the driven joint 45, which is pivoted to a bracket (not shown) of the base 1, is in contact with the cam 7e via a roller 46. The other end of the driven joint 45 has a pin 47, with which a fork-shaped portion 47a of one end of another lever 48 is engaged, and the lever 48 is pivotally fixed to a bracket (not shown). 48b acts as a wire stopper when inserting the electric wire vA9 onto the chuck slide 16.

According to FIG. 2f, a lever 55 that guides and presses the coating at the end of the electric wire 9 is fixed to a bracket (not shown) on the base 1, and a roller 56 is attached to one end of the lever 55, and a wire is attached to the other end of the lever 55. A guide 57 is provided. When the lever 55 swings, the wire guide is moved in the direction of arrow F. That is, the wire guide 57 on the base 1 presses and releases the ends of the electric wires 9.

According to FIG. 2g, a terminal crimping mechanism is shown. A lever 71 provided with a roller 72 is fixed to a lever-shaped tool 73 provided with a roller 74, and the crimping tool 73 is pivoted to a bracket (not shown). The cam 1gz is for lifting the tool 73, and the cam 7g+ is for pushing down the tool 72, that is, for crimping the terminal 10 on the die 1g on the base 1.

Figure 2h is for explaining magazine feeding.

The lever 60 is in contact with the cam 7h via the roller 61, and the other end of the lever 60a is engaged with the pin 62. The pin 62 is fixed to another shaft on a bracket (not shown).

It is fixed to the magazine feed claw 64, and the spring hook is attached to the pin 65.
is fixed, and the spring hook on the lever 60 has a spring 66 hooked between pins 63 and 65.

Another spring 68 has one end hung on a spring hook (not shown) on the base 1, and the other end attached to a pin 68 on the lever 60.
It is hooked to 7. As a result, the macazine 70 is intermittently sent in the direction of the arrow F by the rotation of the cam 7f.

According to FIG. 21, a terminal button cam 71 formed as a grooved cam is recognized, and the roller 50 is engaged with it, and the lever 51 is pivoted to a bracket (not shown) on the base 1 near the roller 50. , the other end of the lever 51 is a terminal button 52
The bracket 1. of the base 1 is inserted into the groove 52a on the lower surface of the bracket 1. The terminal bushing 52 guided by is reciprocated in the direction of the arrow (■).

According to FIG. 2j, a stop signal cam 7j is shown.

The stop signal cam 7j is connected to the main shaft 5 via a control circuit (not shown).
Controls the rotation of the

FIG. 3 is an overall view of the magazine. A large number of terminals 10 are loaded into the magazine 70. The magazine 70, which can be made of synthetic resin, is provided with a large number of recesses 70a, and one terminal IO is loaded into each recess 70a with its axis oriented parallel to the axial direction of the magazine 70. . The recess has a connection width that corresponds to the diameter of the tongue of the terminal 10 and is pierced by a hole 70a that corresponds to the diameter of the barrel of the terminal.゛From the magazine 70 to the terminal button 5
2 causes the terminal button 52 to project the terminal 10 from the magazine 70 in a direction parallel to the main shaft 5 (in the direction of arrow 1).

(Operation of the Invention) The present invention will be described in detail with reference to FIG. 1, FIGS. 2a to 2j, FIG. 3, and FIG. 4.

One rotation of the main shaft can drive wire clamps, chuck slides, strip plates, twist drives, stopper drives, etc.
Wire guide, terminal crimping, magazine feeding 1. Each process of the terminal button and the control by the stop signal cam are performed sequentially according to the time chart (FIG. 4).

First, in the right-hand range of FIG. 1, the magazine 70 loaded with the terminals 10 (FIG. 3) is set on the shaft 80 of the bracket, not shown in detail, on the base 1. Then, in the left-hand region of FIG. 1, the electric wire wA9 is inserted between the two bolts 20 and 21 of the chuck slide 16 parallel to the main shaft 5.

At this time, the electric wire 9 may be inserted until it hits the wire stopper 48b. The operating switch, ie the start switch of the device according to the invention, is then turned on. In this case, a control circuit (not shown) can perform the next operation after confirming that the wire clamp has correctly clamped the electric wire 9.

By operating the operation switch, each process progresses as shown in FIG.

The wire clamp continues to chuck the electric current vA9 over a period of approximately ⅔ rotation of the main shaft 5 in the A direction.

The chuck slide 16 moves backward (moves to the left in FIG. 1) and then moves forward (moves to the right in FIG. 1). When the chuck slide 16 is retracted, the ends of the wires 9 are stripped of their covering in accordance with the movement strokes of the strip plates 25, 26, which will be described later. The forward movement of the chuck slide 16 is the feeding phase to the crimping point between the wire end and the terminal.

The strip plates 25, 26 close at the beginning of the rotational phase of the main shaft 5, thereby cutting off the sheathing of the wire ends so that the sheathing is removed upon retraction of the chuck slide 16 as described above. The stroke of the chuck slide 16 can be appropriately designed depending on the thickness of the electric wire.

The twist drive uses a mechanism similar to that of a strip to move the upper and lower jaws 35 and 36 with the lower legs (35a, 36a) in opposite directions (arrow d).

, dt) to give twist to the core wire to ensure that the core wire is prevented from unraveling and maintains linearity (2nd dt).
figure). The twisting drive takes place in tandem with the actuation of the strip.

The wire stopper 48b is driven over approximately 273 rotations of the main shaft 5 from the beginning of the rotation phase of the main shaft 5. The purpose of driving the wire stopper 48b is to open a path for feeding the electric wire 9 to the crimping location.

The wire guide 57 serves for guiding and clamping the sheathing of the wire end during terminal crimping at the crimping point.

Therefore, the timing of action of the wire guide 57 substantially coincides with the terminal crimping.

The terminal crimping is performed in synchronization with the operation timing of the wire guide 57 described above.

The magazine 70 is fed one tooth each time one terminal 10 is crimped. By step feeding (intermittent feeding) of the magazine 70, the terminals 10 are sequentially positioned in front of the terminal pushers 52.

The terminal button 52 pushes out the terminal 10 in the magazine 70 to the left (arrow I) in FIG. 1 and sends the terminal 10 to the crimping location.

The stop signal cam 7j also acts as a kind of safety mechanism for interrupting the rotation of the main shaft 5 as necessary at the beginning of the rotation phase of the main shaft 5 to confirm the open/closed state of the wire clamps 20, 21.

(Effects) According to the present invention, wire clamps, chuck slides,
Each process of strip plate, twist drive, stopper drive, wire guide, terminal crimping, magazine feed, terminal pusher, and control by the stop signal cam can be performed all at once (within 3 seconds, for example) in one rotation of the main shaft, compared to conventional methods. Not only can the working time be significantly shortened, but also the connection performance after the terminal is crimped can be stabilized. In addition, the device itself is compact (for example, about 300 mm in width, 400 mm in depth, and 200 mm in height) and lightweight (about 20 kg in weight), so it is portable and can be used anywhere in electrical construction sites.

[Brief Description of the Drawings] Fig. 1 is a plan view of the automatic wire end processing method and device according to the present invention, and Figs. 2a to 2j show a wire clamp, chuck slide, strip plate, twist drive,
Fig. 3 is a perspective view of the magazine; 3 is a time chart showing an overview of the operation timing of the device according to the present invention. Reference numeral 1 in the figure...Base 5...Main shaft 7a...Wire clamp cam 7b...Chuck slide cam 7C...Strip plate cam 7d...Twist drive cam 7e...Wire stopper cam 7f...Wire guide cam 7g...Terminal crimping cam 7h...Magazine feed cam 71...Terminal pusher cam 7j...Stop signal cam 9...Electric wire 10...Terminal 70...Magazine

Claims (1)

[Claims] [1] The terminal (10) is inserted into a disc-shaped magazine (70), the end of the electric wire (9) is clamped, and the end of the electric wire (9) is twisted while removing the covering. After that, feed the electric wire (9) while clamping it to the crimping position, and then push out the terminals (10) one by one from the magazine (70) and feed them to the crimping position. At the crimping position, insert the center of the electric wire (9) into the terminal (10). The above method, characterized in that crimping with the terminal (10) is carried out in alignment with the center of the barrel portion of the terminal (10). [2] Insert the terminal (10) into the disc-shaped magazine (70), clamp the end of the electric wire (9), twist it while removing the coating from the end of the electric wire (9), and then While being clamped, send the terminals (10) one by one from the magazine (70) to the crimping position. At the crimping position, align the center of the wire (9) with the center of the barrel of the terminal (10). In an apparatus for carrying out a method of crimping with a terminal (10) in alignment, a wire clamp, a chuck slide, a strip plate, a twist drive, a stopper drive, a wire guide, a terminal crimping, Cams (7a, 7b, 7
c, 7d, 7e, 7f, 7g, 7h, 7i, 7j), and a tool or member for performing all of the above steps is connected to each cam via a driven joint so as to be able to transmit motion,
The device characterized in that all the steps described above are performed continuously by one rotation of the camshaft (5).