JP2608235B2 - Minimum forming method for strip length - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a strip at an end of a very thin wire used in a magnetic head for audio, for example, and a method of forming a strip having a minimum length.

[0002]

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

[0003] Conventionally, a method of forming a strip length of an electric wire having a normal thickness of this kind is configured as shown in FIG.

That is, in FIG. 8, a pair of guide rails (not shown) is provided on a frame (not shown) of the electric wire processing machine. They are provided facing each other.
Further, a pair of cutting blades b1,
a pair of strip blades (peeling blades) c1 and c2 with b2
And d1, d2 are removably mounted by respective mounting bolts with respective spacers e1, e2 interposed therebetween.

Therefore, in the above-described method of forming the strip length of the electric wire W in the electric wire processing machine, the electric wire W is gripped by the pair of clamp claws f1 and f2, and the pair of clamp claws f1 and f2 is formed so as to face each other. The cutting blades b1, b2 are transferred to a pair of trip blades c1, c2 and d1, d2, respectively, and then the holders a provided on the pair of guide rails are brought to a predetermined position. By abutting each other, the wire W is cut by the pair of cut blades b1 and b2, and at the same time, each of the other strip blades c is cut.
1, c2 and d1, d2 make a cut in the coating W2 of the electric wire W, and move the pair of clamp claws f1, f2 outwardly (in the front-rear direction) to thereby form each coating W.
2 is stripped from the electric wire W to form a strip W1.

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

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

[0008]

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

That is, the extremely thin type of cutting blade or strip blade used in the processing of ultrafine electric wires has a critical thickness of the blade due to the strength of the blade, bending of the blade, and warpage of the blade during polishing. Due to the demand for high quality, it is no longer possible to construct an extremely thin blade, and not only does it require skill in assembling and adjusting, but also when setting up strip lengths of various kinds of electric wires W in small quantities. It is difficult to spend much time and effort on adjustment and to improve productivity.

[0010] In order to solve the above-mentioned problems, the present invention moves a strip blade to a position of a cutting blade to form a strip without using a thin blade.
Enables stripping of ultra-fine wires without being limited to the critical thickness of the blade due to blade strength, blade deflection, blade warpage during polishing, etc. It is an object of the present invention to provide a method for forming a strip with a minimum length in which the quality of the strip is improved by eliminating the damage of the strip by saving labor.

[0011]

SUMMARY OF THE INVENTION The present invention relates to an electric wire processing machine for forming a strip at the end of an electric wire. A pair of cutting blades are provided so as to be gripped, and a pair of cutting blades are reciprocally moved in the left and right direction on the electric wire transfer path to cut the electric wire. The pair of strip blades are provided so as to move closer to the cutting position side of the blade, and when the pair of strip blades are moved closer to the cutting position side of the two cutting blades, the pair of strip blades move forward and Cuts are made at the ends of the wires, and the wires are moved back and forth by the pair of clamp devices to peel off the coating.

[0012]

According to the present invention, the electric wire to be conveyed is gripped by a pair of front and rear clamping devices, and the gripped electric wire is cut by reciprocating a pair of cutting blades, and then the two cutting blades are retracted to their original positions. Then, each pair of strip blades is moved so as to approach each other to the cutting position side of the both cut blades, and thereafter, the pair of strip blades are moved forward to cut the ends of the respective electric wires. This is a minimum strip length forming method in which the electric wires are moved back and forth with respect to each other to peel off the coating, and the pair of strip blades and the clamp device are returned to their original positions.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an illustrated embodiment.

In FIGS. 1 to 3, reference numeral 1 denotes an electric wire W in an electric wire processing machine for forming a strip at an end of the 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 and rear direction and to grip the electric wire W, and 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 is provided on each cylinder device 4 such as an air cylinder device.
The wire W is provided so as to reciprocate in the left and right directions at a and 4b. A pair of strip blades 5a, 5b, 6a, a pair of front and rear strip blades 5a, 5b, 6a,
6b, the cutting blades 3a, 3b are spaced apart from each other by a screw 7 having a right-handed screw and a left-handed screw such as a ball screw.
The screw 7 is connected to a pulse motor (not shown). Furthermore, each pair of strip blades 5
a, 5b, 6a, 6b move so as to approach each other toward the cutting position side of the cutting blades 3a, 3b, and further move inward to cut into the ends of the electric wires W. Each of the electric wires W is moved back and forth by the pair of clamp devices 1 and 2 to peel off the coating.

Hereinafter, the operation of the present invention will be described. When cutting the ultrafine electric wire W and forming the strip, the electric wire W to be transferred is previously held horizontally by a pair of front and rear clamp devices 1 and 2 in FIGS. 1 to 3. Next, the gripped electric wire W is reciprocated in the left-right direction by the pair of cutting blades 3a, 3b by the respective cylinder devices 4a, 4b to cut the electric wire (see FIG. 1). After a while, these two cutting blades 3
a and 3b are retracted to their original positions (see FIG. 2). Further, the pulse motor is driven to rotate a screw rod 7 having a right-handed screw and a left-handed screw, so that each of the above-mentioned pair of strips screwed into this. The blades 5a, 5b, 6a, 6b are moved closer to the cutting positions of the cutting blades 3a, 3b (see FIG. 2).

Next, the pair of strip blades 5a, 5a
b, 6a, and 6b move forward to make a cut in the end of each of the wires W (see FIG. 3), and move the wires W back and forth to peel off the coating. Release the pair of strip blades 5a, 5b, 6a, 6b
And the clamp devices 1 and 2 are returned to their original positions. In this manner, the present invention moves the strip blades 5a, 5b, 6a, 6b to the positions of the respective cutting blades 3a, 3b without using a thin blade to form a strip.

As described above, the present invention enables strip processing of an ultra-fine electric wire without being limited by the limit thickness of the blade.
It is possible to facilitate the production of a large number of products in small quantities, and to improve the quality by eliminating damage to the strip.

[0018]

[0019]

[0020]

[0021]

As described above, according to the present invention, an electric wire to be transferred is gripped by a pair of front and rear clamp devices, and the gripped electric wire is cut by reciprocating a pair of cutting blades. The blades are retracted to their original positions, and then each pair of strip blades is moved closer to the cutting position side of the two cutting blades, after which the pair of strip blades are moved forward and Make a cut at the end of the wire,
The wires are 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. Therefore, the position of the cutting blade can be reduced without using a thin blade. By moving the strip blade to form a strip, it is possible to strip an ultra-fine wire without being limited to the limit thickness of the blade due to the strength of the blade, bending of the blade, warpage of the blade when polishing, etc. In addition to this, there are excellent effects such as facilitating the production of many kinds of small quantities, saving labor by mass production, and improving the quality by eliminating the damage of the strip.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a method for forming a strip with a minimum length according to 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 view for explaining a conventional normal minimum forming method of a strip length.

[Explanation of symbols]

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

Claims (1)

(57) [Claims] In an electric wire processing machine for forming a strip at an end of an electric wire, a conveyed electric wire is gripped by a pair of front and rear clamp devices, and the gripped electric wire is cut by reciprocating a pair of cutting blades. Thereafter, the two cutting blades are retracted to their original positions, and then each pair of strip blades is moved so as to approach each other toward the cutting position side of the two cutting blades.
The pair of strip blades are moved forward to make cuts at the ends of the wires, and the wires are moved back and forth to peel off the coating. A minimum strip length forming method, wherein the strip length is returned to the position.