JPS5852405B2 - Electric wire core twisting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for twisting the core wire of an electric wire for soldering.

Generally, when connecting electric wires to low-power electrical equipment by soldering, the core wire is made up of many thin wires, so the core wires are twisted to prevent them from fraying, and then preliminary soldering is performed on the core wires. There is a need to do.

Currently, the wires are stripped of their sheathing using a stripping machine, and then the core wires are twisted with their fingertips.

Since the wires commonly used are two-core wires, the work is troublesome as each wire must be twisted twice.

In addition, mechanical devices have been proposed in the past that automatically remove the coating from the ends of electric wires and twist the core wires at the same time. In addition, since it can only twist a single wire, it has disadvantages such as inefficiency in terminal processing of multi-core wires such as two-core wires, or it is not very practical because the core wires are insufficiently twisted. .

It is an object of the present invention to provide an electric wire core twisting device that improves the drawbacks of such conventional devices and can efficiently and reliably process the terminals of multi-core electric wires using a relatively simple mechanism. The gist thereof is a support member capable of forward and backward movement, a lever rotatably supported by the support member and connected at one end to a link mechanism, and the other end of the lever and the tip of the support member. a pair of slide blocks attached to the slide block so as to be slidable in a direction perpendicular to the direction of the forward and backward movement; a pair of twisting members attached parallel to each other in opposition to the slide blocks; It has rollers supported by the blocks, and a mechanism that contacts these rollers and causes the pair of slide blocks to move relative to each other when the support member moves forward and backward, and a coated single wire is inserted between the pair of twisted members. The present invention is characterized in that the wire is inserted, and the covering beyond a cut provided in a part of the covering of the wire is twisted and pulled, thereby removing the covering and twisting the core wire.

The present invention will be explained in detail based on illustrated embodiments.

FIGS. 1 and 2 show an embodiment of the electric wire core twisting device according to the present invention, in which the support member 1 is supported by a slide device (not shown) and can be moved back and forth within a required dimension, that is, left and right in FIG. Directional movement is possible.

A lever 2 is rotatably supported on the support member 1 by a pin 3, and a link mechanism (not shown) is connected to a pivot hole 4 at the lower end of the lever 2, and rotates the lever 2. The support member 1 is moved back and forth.

Fixing members 5 and 6 are fixed to the support member 1 and the lever 2, respectively, and slide blocks 7 and 8 are attached to these fixing members 5 and 6, respectively, through two rollers 9 and two pins 10 to apply a lateral force ( It is attached so as to be freely movable in the direction penetrating the plane of the paper in FIG.

The slide block 7.8 is provided with transverse slots 11, 12, the length of which is smaller than the dimension between the outer surfaces of the respective rollers 9.

Each slide block 7.8 has a core wire twisting member 13.
．． 14 is fixed, and as shown in FIG. 1, the twisting member 13.
14 are opposed to each other, and the opposing surfaces 15 and 16 are rough surfaces such as knurling.

The head of the pin 10 inserted through the roller 9 contacts the end face of the slide block 7.8, as shown in FIG. 1, to prevent the slide block from being pulled out.

A roller 17,1B is supported on the outer side of the slide block 7.8 by a pin 19.20, and a tension spring 21,
22 is installed to keep the slide block 7.8 in the outer end position.

A copying cam on the outside of the circle (not shown) is brought into contact with the rollers 17 and 18, and when the support member 1 moves forward and backward, the slide block 7
．． 8 are configured to move relative to each other in the direction of lateral force.

Next, to explain the operation of this device, an electric wire with cuts or scratches in the sheathing at a predetermined position as a single wire, such as a two-core parallel electric wire A, is split into single wires by the required dimensions, and a cut B is made in the sheathing at the sheathing removal position. The two wires containing the wires are placed in parallel and fed between the opposing surfaces 15 and 16 of the twisting members 13 and 14 in parallel to the plane of the paper in Fig. 1 using a wire feeding device (not shown), and at a position close to the twisting members 13 and 14. Hold the wire so that the twist does not reach the coating that does not require stripping.

Next, the link mechanism rotates the lever 2 through the pivot hole 4 in the counterclockwise direction in FIG.
Press between.

The pressing force is determined by stopping the rotation of the lever 2 using, for example, an adjustment bolt (not shown) so that a constant pressing force is applied.

When the lever 2 is further pulled by the link mechanism, the lever 2 and the support member 1 retreat to the right in FIG. move towards

As a result, the rough surfaces 15 and 16 of the twisted members 13 and 14 are
It performs a relative movement while retreating from the electric wire A, twisting the electric wire A and pulling the coating.

Since the slide blocks 7.8 relatively move in different lateral directions, the core wires of the electric wire A sandwiched between the rough surfaces 15 and 16 remain in the same position without moving in the lateral direction. Avoid applying twist through the coating.

The sheathing is pulled out separately from the cut B, leaving only the twisted core wires in their original positions, and the core wires do not come apart.

In the retracted position of the support member 1 and the lever 2, the twisted core wire and the sheathing are separated and the sheathing is held between the twisting members 13, 14.

When the pivot hole 4 of the lever 2 is pushed to the left, the lever 2 rotates clockwise to release the coating between the twisted members 13 and 14, and the coating is blown away by applying air or the like.

If the lever 2 is further pushed, the lever 2 and the support member 1 move forward, and the slide block 7.8 and the twisting members 13 and 14 return to the external force end position by the springs 21 and 22, and wait for the next core wire to be twisted. .

The core wire of the electric wire may have been gently twisted during the manufacturing process, but the slide block 7.8
It is necessary that the twist given by this process be stronger than the twist in the manufacturing process described above, and at least it must not be in the direction of untwisting, but must be in the same direction as the twist in the manufacturing process.

In addition, adjustment of the pressing force between the twisting members 13 and 14, and support member 1
It is extremely easy to adjust the forward and backward strokes of the lever 2, and it is possible to easily and quickly twist the core wires of electric wires of various diameters and various sheath removal lengths.

Of course, this device can be installed independently, but it can also be used as a machine that performs a series of these operations, including a means for splitting the legs before twisting and making cuts in the coating. can.

Furthermore, the present invention is not limited to the embodiments and can be modified in various ways.

As explained above, according to the device of the present invention, by the relative movement of the two slide blocks, it is possible to peel off the coating of the electric wire separated into single wires, and to give twist to the core wires respectively, so that the wires can be twisted for the next soldering. will greatly improve work efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the electric wire core twisting device according to the present invention, and FIG. 1 is a side view thereof, and FIG. 2 is an exploded view of the parts. 1 is a support member, 2 is a lever, 5 and 6 are fixed members, 7
, 8 is a slide block, 9.17° 18 is a roller,
10 is a pin, 11 and 12 are long holes, 13.14 is a twisting member, 15.16 is an opposing surface, and 21.22 is a return spring.

Claims (1)

[Claims] 1 a support member capable of forward and backward movement; a lever rotatably supported by the support member and connected at one end to a link mechanism; a pair of slide blocks attached so as to be able to slide in a direction perpendicular to the direction; a pair of twisting members attached to these slide blocks in parallel and facing each other; and a roller supported by the pair of slide blocks. and a mechanism that contacts these rollers and causes the pair of slide blocks to move relative to each other when the support member moves forward and backward, and a covered single wire electric wire is inserted between the pair of twisted members, An apparatus for twisting core wires of electric wires, characterized in that the sheathing beyond a cut provided in a part of the sheathing of the electric wire is twisted and pulled to remove the sheathing and give twist to the core wire.