JPS5938979Y2 - wire cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wire cutting device, and its purpose is to automatically straighten the cut end into a straight line at the same time as cutting the wire.

Automatic winding machines for coils for motors, generators, etc. use a flyer that moves in a circular motion around the winding to tightly wind and form electric wire.

Then, when the required number of turns is reached, the electric wire between the flyer and the winding frame is cut.

When cutting this electric wire, the electric wire between the fryer and the winding frame is received by a wire catcher and pushed to a fixed cutting tool to be cut.However, in the conventional method, the wire is cut as shown in Figure 1A. When cutting both ends C-C of the circular arc-shaped bent portion 1a of the electric wire 10 being pushed by the catcher, and when cutting the one end C-C of the circular arc-shaped bent portion 1b on the side connected to the winding frame as shown in Fig. 1B. There were times when it had to be cut off.

In the case of the former cutting method, both the winding start end and the winding end end of the coil are straight, but the arcuate bent part 1
Since a is cut off, the removed portion is wasted, and if this removed portion is accumulated in a long electric wire that is mass-produced, a considerable amount of waste will be generated, resulting in a problem that will affect the cost.

In the latter case, waste can be avoided because the removed portion is eliminated, but since the arc-shaped bent portion 1b remains on the wire 1 on the side leading to the fryer, when it is wound neatly, the coil The arcuate bent portion 1b is directly formed at the end of the winding start.

Therefore, when fitting the insulating tube to the winding start end and the winding end of the coil, if the arcuate bent portion 1b exists, the tube cannot be fitted smoothly, so this arcuate bending The portion 1b had to be straightened in a straight line.

As for this work, the arcuate bending portion 1b of each coil is manually performed by the worker using his or her fingertips, which has an adverse effect on work efficiency and is also reflected in cost.

The present invention solves the above-mentioned conventional problems, and its features are that, in the cutting method shown in FIG. To provide a wire cutting device that facilitates the winding work by holding the cut end until the winding work is started.

An embodiment of the present invention will be described below with reference to FIG.

1 is an electric wire, 2 is a flyer, and 3 is a wire catcher with an arcuate tip.

This wire catcher 3 is a member that pushes the electric wire 1 connected between the fryer 2 and the winding frame of the circuit to the wire cutting device side when a required number of wires are entangled with the winding frame.

4 is a wire cutting device main body (hereinafter referred to as the device main body).

A long groove 5 into which the wire catcher 3 is fitted is provided at the tip of the main body 4 of the device, and a cutter 6 is fixed to one side of the entrance of the long groove 5.

Further, a long groove 5 facing the side on which the cutter 6 is fixedly installed is provided.
On the other side, an L-shaped wire holder 7 having a flat surface 7a forming a part of the long groove along the longitudinal direction of the long groove 5 is rotatably pivoted by a pivot 8. It is connected to an actuating device.

As shown in the figure, this actuating device is a cylinder 9, a solenoid in a circuit, or other mechanical device that moves forward and backward.

10 is a piston rod of the cylinder 9, and the wire holder T is connected to this piston rod.

Since the present invention has the above-described structure, normally the piston rod 10 moves forward and the flat surface 7a of the wire holder 7 is located along the long groove 5 as shown in the figure.

In this state, when the required number of turns is completed on the winding frame of the circuit, the wire catcher 3 moves forward and the flyer 2
The electric wire 1 extending between the winding frame and the winding frame is pushed toward the device main body 4 side.

At this time, the electric wire 1 is inevitably formed with an arcuate bent portion 1b along the tip of the wire catcher 3.

When the wire catcher 3 is inserted into the long groove 5, one end of the arcuate bent portion 1b of the electric wire 10 on the side connected to the fryer 2 is clamped and fixed between the wire catcher 3 and the end of the flat surface 7a of the wire holder 7. At the same time, one end of the electric wire 10-circular portion 1b on the side connected to the winding frame is cut C using a cutting tool 6.

Then, the wire catcher 3 further enters the long groove 5, and the wire catcher 43 and the flat surface 7 of the wire holder T
Automatically straighten the arc-shaped bent portion 1b of the electric wire 10 connected to the fryer 2 side sandwiched between the
Surface measurement of wire catcher 3 and plane 7 of wire holder I
It is held between a.

Next, the coil that was neatly wound in the previous process is delivered to the coil receiving jig, and when the fryer 2 starts to rotate again to neatly wind the coil, the cylinder 9 is activated and the piston rod 10 is moved back. Then, the wire holder 7 is rotated counterclockwise in the figure, and the wire catcher 3 is returned to its original position.

As a result, the cut end of the electric wire 1 connected to the fryer 2 side, which was held by the wire holder 7 and the wire catcher 3, is released from being held, and becomes a linear winding start end on the winding frame side. .

Note that the wire holder 7 immediately returns to the long groove 5 side after being held and released, and prepares for the next cutting operation.

As described above, according to the device of the present invention, the cut end of the wire is automatically straightened into a straight line at the same time as it is cut, so the conventional manual straightening work is omitted and work efficiency is significantly improved. In addition, since the cut end is held until the required time, there is an advantage that winding on the winding frame by the flyer can be ensured and the required number of windings can be made accurately.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional wire cutting method, and FIG. 2 is a plan view of the device of the present invention. 1...Electric wire, 1b...Circular bending part,
2... Raiee, 3... Wire catcher 14... Device body, 5... Long groove, 6... Cutting tool, 7... ...Wire holder,
7a...plane, 8...axis, 9...
...Cylinder, 10...Piston rod.

Claims (1)

[Scope of utility model registration request] A long groove is provided at the end of the device main body into which a wire catcher whose tip is arc-shaped and which bends and pushes the electric wire in an arc along the arc-shaped tip shape is fitted, and one side of the entrance of this long groove is provided. A cutter for cutting the bent end of the electric wire being pushed by the wire catcher is fixed to the wire catcher, and a part of the long groove is formed along the longitudinal direction of the long groove on the other side of the long groove opposite to the side on which the cutter is fixed. A wire holder having a flat surface is rotatably provided, and an actuating device for turning the flat surface of the wire holder backward in the opening direction from a position along the longitudinal direction of the long groove is installed in the main body of the device, and the actuating device and the wire holder An electric wire cutting device characterized by being connected with.