JPH06253429A - Method of forming strip of minimum length - Google Patents

Abstract

PURPOSE:To facilitate the production of a multikind and small-quantity production and improve quality by making the strip processing of an ultrathin cable possible without being limited by the limit thickness of an blade, concerning the method of forming a minimum of strip at the end of an ultrathin cable. CONSTITUTION:This is a method of forming a minimum of strip by catching a transferred cable with front and rear clamp devices 1 and 2 in a pair and reciprocating this caught cable with a pair of cutting blades 3a and 3b so as to cut it, and then, retreating both the cutting blades 3a and 3b to their former positions, and next, shifting strip glades 5a and 5b and 6a and 6b each in a pair, in such a way as to come close each other, to the side of the cutting position by both cutting blades 3a and 3b, and then, reciprocating the strip cutting blades 5a and 5b and 6a and 6b each in a pair so as to make cuts at the ends of the each cable, and also shifting each cable back and forth with each other so as to strip the covers, and then, returning the strip blades 5a and 5b and 6a and 6b each in a pair and the clamp devices 1 and 2 to the former positions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming a minimum strip length of an electric wire for forming a strip at an end of an ultrafine electric wire used for a magnetic head for audio.

[0002]

2. Description of the Related Art Generally, for example, an ultrafine electric wire used for a magnetic head for audio is about 0.8 to 1.0 mm, and a core wire thickness is about 0.4 mm.
It is required to use extremely thin type cutting blades and strip blades.

Conventionally, a method of forming a strip length of an electric wire of this type having a normal thickness is constructed as shown in FIG.

That is, in FIG. 8, a pair of guide rails (not shown) are provided on a frame (not shown) of the electric wire processing machine, and both holders a are mutually attached to the pair of guide rails. It is installed facing each other.
Also, a pair of cutting blades b1,
Strip blades (peeling blades) c1 and c2 that form a pair with b2
, D1 and d2 are removably mounted by the mounting bolts via the spacers e1 and e2.

Therefore, in the method of forming the strip length of the electric wire W in the electric wire processing machine described above, the electric wire W is gripped by the pair of clamp claws f1 and f2, and the pair is provided so as to face each other. The blades are transferred between the cutting blades b1 and b2 and the pair of trip blades c1 and c2 and d1 and d2, and then the holders a provided on the pair of guide rails facing each other are brought to predetermined positions. By abutting, the electric wire W is cut by a pair of cutting blades b1 and b2, and at the same time, other strip blades c are cut.
The coating W2 of the electric wire W is cut with 1, c2 and d1, d2, and the pair of clamp claws f1 and f2 are moved outward (forward and backward) to each other, so that the coating W
2 is stripped from the wire W to form a strip W1.

On the other hand, in the method of forming the strip length described above, the length of the strip W1 of the electric wire W is manually adjusted by manually removing the mounting bolts and replacing the spacers e1 and e2 having different widths. I am adjusting.

That is, the length of the strip W1 of the electric wire W is manually adjusted by changing the thickness of each of the spacers e1 and e2.

[0008]

However, the above-described method of forming a strip length is to form a strip W1 of an electric wire W having a normal thickness, and if this is used as it is for forming a strip length of an ultrafine electric wire. , It is difficult to shape the minimum strip length.

That is, an extremely thin type cutting blade or strip blade used for processing an ultrafine electric wire has a limit thickness of the blade due to the strength of the blade, the bending of the blade, the warp of the blade during polishing, etc. However, it is not possible to construct an extremely thin blade because of the requirement of the size, and moreover, not only skill in assembling and adjusting is required, but also when the strip length of the wire W of a small quantity and a large variety is manufactured, the setup is required. Adjustment takes a lot of time and labor, and it is difficult to improve productivity.

In order to solve the above problems, the present invention moves the strip blade to the position of the cutting blade to form a strip without using a thin blade.
Enables strip processing of ultrafine wires without being limited by the blade's limit thickness due to blade strength, blade deflection, blade warping during polishing, etc., facilitating the production of a large number of small quantities and mass production. It is an object of the present invention to provide a minimum forming method of a strip length in which the labor of the strip is saved, the damage of the strip is eliminated, and the quality is improved.

[0011]

DISCLOSURE OF THE INVENTION The present invention relates to an electric wire processing machine for forming a strip on an end portion of an electric wire, in which a pair of front and rear clamp devices can be moved in the front-back direction on a transfer path of the electric wire to be transferred. It is provided so that it can be gripped, and a pair of cutting blades are reciprocally moved in the left-right direction on the electric wire transfer path to cut the electric wire. It is provided so as to move closer to each other to the cutting position side of the blades, and when each pair of strip blades is moved closer to the cutting position side of the both cutting blades, each pair of strip blades is moved forward and back. A notch is made at the end of the electric wire, and each electric wire is moved back and forth by the pair of clamp devices to peel off the coating.

[0012]

According to the present invention, the transferred electric wire is grasped by the pair of front and rear clamp devices, and the grasped electric wire is reciprocated by the pair of cutting blades to be cut, and then both the cutting blades are retracted to their original positions. Then, move each pair of strip blades so as to approach each other to the cutting position side of the both cutting blades, and then move the pair of strip blades forward to make a cut at the end of each electric wire. This is a minimum strip length forming method in which each electric wire is moved back and forth to peel the coating off and the pair of strip blades and the clamp device are returned to their original positions.

[0013]

The present invention will now be described with reference to the illustrated embodiments.

In FIGS. 1 to 3, reference numeral 1 is an electric wire W in an electric wire processing machine for forming a strip on an end portion of an electric wire.
A pair of front and rear clamp devices 1 and 2 are provided on the transfer path so as to be movable in the front-rear direction and hold the electric wire W. The transfer of the electric wire W between the pair of clamp devices 1 and 2 is performed. On the road, a pair of cutting blades 3a, 3b are provided for each cylinder device 4 such as an air cylinder device.
It is provided so as to reciprocate in the left-right direction by a and 4b to cut the electric wire W. Further, before and after the both cutting blades 3a, 3b, a pair of front and rear strip blades 5a, 5b, 6a,
6b is, for example, the above-mentioned cutting blades 3a, 3b spaced apart from a threaded rod 7 having a right-hand screw and a left-hand screw such as a ball screw.
The screw rods 7 are movably provided so as to come close to each other toward the cutting position side, and the screw rod 7 is connected to a pulse motor (not shown). Further, each pair of strip blades 5
a, 5b, 6a, 6b move toward the cutting position side of the both cutting blades 3a, 3b so as to come closer to each other, and further move inward toward each other so as to make a cut at the end of each electric wire W. The electric wires W are moved back and forth by the pair of clamping devices 1 and 2 to peel off the coating.

The operation of the present invention will be described below. When cutting and forming a strip of the ultrafine electric wire W, in FIG. 1 to FIG. 3, the electric wire W to be transferred is previously held by the pair of front and rear clamp devices 1 and 2 and held horizontally. Next, the gripped electric wire W is reciprocated in the left-right direction by the pair of cutting blades 3a and 3b by the respective cylinder devices 4a and 4b to cut the electric wire (see FIG. 1). After that, these two cutting blades 3
a and 3b are retracted to their original positions (see FIG. 2), and further, by driving a pulse motor to rotate a screw rod 7 having a right-hand screw and a left-hand screw, the pair of strips are screwed together. The blades 5a, 5b, 6a, 6b are moved toward the cutting positions of the both cutting blades 3a, 3b so as to approach each other (see FIG. 2).

Next, the pair of strip blades 5a, 5
b, 6a, 6b are moved forward to make a notch at the end of each electric wire W (see FIG. 3), and each electric wire W is moved back and forth to peel off the coating, and then each electric wire W is removed. Release the pair of strip blades 5a, 5b, 6a, 6b.
Also, the clamp devices 1 and 2 are returned to their original positions. Thus, the present invention moves each strip blade 5a, 5b, 6a, 6b to the position of each cutting blade 3a, 3b without using a thin blade to form a strip.

As described above, the present invention enables strip processing of ultrafine electric wires without being limited to the limit thickness of the blade,
It is possible to facilitate the production of a large number of different types in small quantities, eliminate damage to the strip, and improve the quality.

On the other hand, another embodiment of the present invention shown in FIGS. 4 to 7 is that each strip blade 5a, 5b, 6a, 6b.
Is configured to perform only the cutting operation of the coating of the electric wire W, and the electric wire W cut by each of the cutting blades 3a and 3b is moved in the front-rear direction to a length corresponding to the strip length. The above-mentioned strip blades 5a, 5 are used for covering the end portions.
The electric wires W are moved back and forth with each other while leaving the cuts at b, 6a, and 6b to peel off the coating.

That is, in FIG. 4, the electric wire W to be transferred is previously held by the pair of front and rear clamp devices 1, 2 or the pair of feed rollers 8 and held horizontally.

Next, as shown in FIG. 5, after the grasped electric wire W is cut by the cutting blades 3a and 3b, the cut electric wires W are moved forward and backward by a pair of clamping devices 1 and 2. After moving to a length corresponding to the strip length (see FIG. 6), each wire W is moved back and forth with the end of each wire W covered by the strip blades 5a, 5b, 6a, 6b. It moves to peel off the coating (see FIG. 7).

[0021]

As described above, according to the present invention, the transferred electric wire is grasped by the pair of front and rear clamp devices, and the grasped electric wire is cut by reciprocating the pair of cutting blades, and then the both electric wires are cut. The blades are retracted to their original positions, and then each pair of strip blades are moved so as to approach each other toward the cutting position side of the both cutting blades. Make a cut at the end of the wire,
Since each of the electric wires is moved back and forth to peel off the coating, and the pair of strip blades and the clamp device are returned to their original positions, the position of the cutting blade can be adjusted without using a thin blade. By moving the strip blade to form a strip, it is possible to process ultrafine wire strips without being limited to the blade's limit thickness due to blade strength, blade deflection, blade warpage during polishing, etc. In addition to the above, it is possible to facilitate the production of a large amount of various kinds in a small amount, save labor by mass production, eliminate damage to the strip, and improve the quality.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a minimum strip length forming method of the present invention.

FIG. 2 is a diagram for explaining the operation of the present invention.

FIG. 3 is a diagram for explaining the operation of the present invention.

FIG. 4 is a diagram for explaining another embodiment of the present invention.

FIG. 5 is a view for explaining the operation of another embodiment of the present invention.

FIG. 6 is a view for explaining the operation of another embodiment of the present invention.

FIG. 7 is a view for explaining the operation of another embodiment of the present invention.

FIG. 8 is a diagram for explaining a conventional normal strip length forming method.

[Explanation of symbols]

 1, 2 Clamp device 3a, 3b Cutting blade 4a, 4b Cylinder device 5a, 5b, 6a, 6b Strip blade

Claims (1)

[Claims] 1. In an electric wire processing machine for forming a strip on an end of an electric wire, the transferred electric wire is held by a pair of front and rear clamp devices, and the held electric wire is cut by reciprocating a pair of cutting blades. After that, the both cutting blades are retracted to the original position, then, each pair of strip blades are moved so as to be closer to the cutting position side of the both cutting blades, and then,
While moving forward each of the pair of strip blades to make a notch at the end of each of the electric wires, move each of the electric wires back and forth to peel off the coating, and remove the pair of strip blades and the clamp device from each other. The method for forming the minimum strip length is characterized in that the strip is returned to the position.