JPH06178421A - Fabrication of strip of covered wire - Google Patents

Abstract

PURPOSE:To easily adjust the length of strip depending on each terminal of a variety of wires in small amount by forming a cutter blade and a strip blade with a cutter unit and then measuring and adjusting the length of strip formed at the end portion of a covered wire with the movement of the cutter unit. CONSTITUTION:After a wire W is fed while the length thereof is measured with a length measuring and feed roller 1, a leading part W4 of wire is held with a clamping apparatus 9 and the wire W is cut with a cutter blade 5 of the cutter unit 2. Next, the length measuring and feed roller 1 is rotated inversely to return the trailing wire W3 as long as the strip and simultaneously the cutter unit 2 is moved with a feed screw 3 along it so that the cutter unit 2 is returned as long as the strip. Thereafter, the trailing wire W3 is held with the clamp apparatus 8, the cutter unit 2 is moved forward to give cut with strip blades 6, 7 to the wire W. The wires W4, W3 are respectively moved forward and backward with the clamp apparatuses 9, 8 to remove the insulator Wa to form each strip W1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip manufacturing method for forming a strip on an end portion of a coated electric wire, which is carried out as a pre-process when crimping a terminal of a coated electric wire incorporated in an automobile, a household electric appliance or the like. Regarding

[0002]

2. Description of the Related Art Generally, a strip forming process of a coated electric wire, which is performed as a pre-process when a terminal is crimped to an end portion of a coated electric wire in an electric wire processing machine for crimping a terminal of a covered electric wire, is shown in FIG. As shown in B), each strip W is based on the thickness of the electric wire W and the size (size) of the terminal.
Since the lengths of 1 and W2 are determined, the lengths L1 and L2 of the strips formed at the end of each covered electric wire can be accurately adjusted according to each terminal of the electric wire W of small quantity and variety. It is desirable to form each strip at the end of the.

Conventionally, this type of strip manufacturing method is constructed as shown in FIG.

That is, in FIG. 6, a pair of front and rear supply rollers a1, a2 and b1, b2 for forward and reverse rotation provided on a machine frame (not shown) of the electric wire processing machine feeds the electric wire W by a predetermined length. The electric wire W is cut by a pair of cutter blades c which are transported and stopped, and which are orthogonal to each other on the conveying path of the electric wires W and face each other, and then are orthogonal to the conveying paths on both sides of the both cutter blades c. After making a cut in the coating of the electric wire W with a pair of strip blades d and e that move forward and backward with respect to each other, the supply rollers a1 and a2 are normally rotated in the same state to move back and at the same time as the other supply rollers. The strips W1 are formed by rotating b1 and b2 in reverse and advancing the electric wire W to peel off the respective coatings.

[0005]

However, in the above-described strip manufacturing method, since the cutter blade c and the strip blades d and e are configured to operate independently of each other, their driving mechanism becomes complicated, Assembly and adjustment and maintenance and inspection are difficult and the number of components is increased. Furthermore, a pair of front and rear feed rollers a1, a2 and b1, b2 that rotate forward and backward are interlocked by a gear mechanism to transfer the electric wire W and measure the length. Due to the backlash of the gear mechanism, not only a measurement error occurs, but in the above-described strip manufacturing method, as shown in FIGS. Despite the fact that the length of each strip W1, W2 must be adjusted each time based on the thickness of W and the size of the terminal, each strike formed at the end of the covered electric wire W. The length L1 of-up W1, W2,
It is difficult to accurately adjust L2 for each terminal of the small amount and many kinds of electric wires W.

On the other hand, as another strip manufacturing method described above, there is, for example, the "coating wire cutting / coating removing method and apparatus" described in JP-A-54-118584, which is the strip manufacturing method described above. Like the above, the drive mechanism is complicated, and assembly and adjustment and maintenance and inspection are troublesome, and there are many components, and not only the measurement error occurs due to the backlash of the gear mechanism,
Despite having to adjust the length of each strip each time based on the thickness of the wire W and the size of the terminal,
It is troublesome to adjust the length of the strip according to each terminal of a small amount of various types of electric wires, the number of manufacturing steps is increased, and in addition, a complicated mechanism is required. is there.

In order to solve the above-mentioned problems, the present invention comprises a cutter unit and a strip blade which are integrated into a cutter unit, and the length of the strip formed at the end of the covered electric wire by the movement amount of the cutter unit. It is an object of the present invention to provide a strip manufacturing method in which the length of the strip can be easily adjusted in accordance with each terminal of a small amount of various types of electric wires by highly accurately measuring and adjusting.

[0008]

According to the present invention, there is provided a machine on an electric wire processing machine, which is provided on a machine frame of a wire processing machine so as to transfer an electric wire while measuring the length of the electric wire by a pair of length-measuring supply rollers which rotate in the forward and reverse directions. It is provided so that the electric wire is cut by the cutter blades of a pair of cutter units that are orthogonal to the frame and move back and forth while facing each other and reciprocate in the transfer direction, and the trailing electric wire is pulled back by the strip length by the reverse rotation of the length measuring supply roller. At the same time, the cutter unit is provided so as to return only the length of the strip, the pair of strip blades of the cutter unit is provided so as to make a cut in the coating of the electric wire, and the pair of clamp devices provided before and after the cutter unit is used for the electric wire. Is gripped and moved to peel off the coating to form a strip.

[0009]

According to the present invention, in an electric wire processing machine, an electric wire is transferred while being length-measured by a pair of length-measuring supply rollers that rotate forward and backward in a first step, and is orthogonal to a transfer path of the electric wire in a second step and face each other. The electric wire is cut by the cutter blades of a pair of cutter units that move forward and backward together and reciprocate in the transfer direction, and in the third step, the following electric wire is pulled back by the length measuring supply roller and the length of the cutter unit is stripped at the same time. Only in the fourth step, the pair of strip blades of the cutter unit makes a cut in the wire coating, and in the fifth step the pair of clamp devices provided before and after the cutter unit grips the wire and moves it. Is a strip manufacturing method in which a coating is peeled off to form a strip.

[0010]

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

In FIG. 1, reference numeral 1 denotes, for example, a pair of length measuring supply rollers 1 which are directly connected to a pulse motor and rotate forward and backward in a machine frame (not shown) of an electric wire processing machine.
Is installed while measuring the length of the electric wire W, and a pair of cutter units 2 are orthogonal to the electric wire W in the transfer path of the electric wire W. The respective cylinder devices 4 are provided so as to face each other and move back and forth. The cutter units 2 are reciprocated in the transfer direction along the transfer path of the electric wire W by the feed screw rods 3 such as ball screws. Further, the length measuring supply roller 1 is provided so as to pull back the trailing electric wire W3 by the length of the strip by the reverse rotation thereof, and at the same time, the respective cutter units 2 are provided so as to return the length of the strip by the respective feed screw rods 3. In the middle of both cutter units 2, each cutter blade 5 is provided so as to cut the electric wire W. Furthermore, strip blades 6 and 7 are provided at both ends of the both cutter units 2 so as to make V-shaped cuts in the coating of the electric wire W from both sides. Clamping devices 8 and 9 are provided so as to grip the electric wire W.
Further, each of the clamp devices 8 and 9 is provided so as to grip and move the electric wire W to peel off the coating and form a strip W1. That is, the clamp device 9 moves the preceding electric wire W4 forward in the transfer direction, and at the same time, the other clamp device 8 returns the succeeding electric wire W3 and transfers the covering wire Wa.
Are peeled off to form each strip W1 (see FIG. 4).

The operation of the present invention will be described below.

1 to 4, in the electric wire processing machine, after the electric wire W is transferred while being measured by the pair of length measuring supply rollers 1 which rotate in the forward and reverse directions in the first step, the transfer of the electric wire W is stopped. In the second step, the electric wire W is cut by the cutter blades 5 of the pair of cutter units 2 which are orthogonal to each other on the transfer path of the electric wire W, face each other, and reciprocate in the transfer direction. Leading wire W4 to be cut
Is gripped (see FIG. 1).

Next, in the third step, by rotating the length measuring supply roller 1 in the reverse direction, the trailing electric wire W3 is pulled back by the strip length, and at the same time, each of the cutter units 2 is moved by the feed screw rod 3 so as to be returned by the strip length. Move along (Fig. 2
reference). Further, in the fourth step, by advancing each of the cutter units 2 facing each other in each of the cylinder devices 4, the pair of strip blades 6 and 7 of each of the cutter units 2 covers the electric wire W from both sides in a V-shape. Before making the cut (see FIG. 3), the clamp device 8 holds the trailing wire W3.

Finally, in the fifth step, the cutter unit 2 is
With the clamp devices 8 and 9 provided before and after the lead wire W
4 and the trailing wire W3 are already gripped, the length measuring supply roller 1 is separated from the trailing wire W3, and the preceding wire W4 is moved forward by the clamp device 9 in the transfer direction, and at the same time as the other clamp device. At 8 the trailing electric wire W3 is returned and transferred to peel off the coating Wa to form each strip W1 (FIG. 4).
reference).

As described above, according to the present invention, the cutter blade 5 and the strip blades 6 and 7 are collectively configured by the cutter unit 2 and moved, and the end portion of the covered electric wire W is moved by the movement amount of the cutter unit 2. Since the length of the strip W1 formed in the above can be measured with high accuracy and promptly, the length of the strip W1 can be easily adjusted in accordance with the electric wire W for crimping a small number of various types of terminals.

[0017]

As described above, according to the present invention, in the first step, the electric wire is transferred while being lengthwise measured by the pair of length-measuring supply rollers which rotate in the forward and reverse directions, and in the second step, the electric wire is orthogonal to the transfer path of the electric wire. The electric wire is cut by the cutter blades of the pair of cutter units that move back and forth facing each other and reciprocate in the transfer direction, and in the third step, the following electric wire is pulled back by the strip length by the length measuring supply roller and at the same time the cutter unit is moved. Return by the length of the strip, make a cut in the coating of the wire with each pair of strip blades of the cutter unit in the fourth step, and grasp the wire with the pair of clamp devices provided before and after the cutter unit in the fifth step. Since it moves and strips the coating to form a strip, the length of the strip can be measured and adjusted with high accuracy, and the length of the strip can be adjusted according to the wire to which a small number of various types of terminals are crimped. Not only can an integer easily, have excellent effects such as to become easy assembly and maintenance because configurations may be simplified.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a method for manufacturing a strip of a coated electric wire 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 diagram for explaining the operation of the present invention.

FIG. 5 is a view for explaining each strip of the covered electric wire.

FIG. 6 is a diagram for explaining a conventional strip manufacturing method for a covered electric wire.

[Explanation of symbols]

 1 Length measuring supply roller 2 Cutter unit 5 Cutter blade 6, 7 Strip blade 8, 9 Clamp device

Claims (1)

[Claims] 1. In a wire processing machine, a first step of transferring an electric wire while measuring the length of the wire with a pair of length-measuring supply rollers that rotate in the forward and reverse directions, and a step of transferring the wire orthogonal to a transfer path of the wire, facing each other, and moving. A second step of cutting the electric wire by the cutter blades of a pair of cutter units that reciprocate in the direction, and a third step of returning the trailing electric wire by the strip length by the length measuring supply roller and at the same time returning the cutter unit by the strip length. ,
A fourth step of making a cut in the coating of the electric wire with each pair of strip blades of the cutter unit, and grasping and moving the electric wire with a pair of clamping devices provided before and after the cutter unit to strip the coating. A method for manufacturing a strip of a covered electric wire, which comprises a fifth step of forming a strip.