JPS5893533A - Shearing and chamfering method for square wire material - Google Patents

Abstract

PURPOSE:To shorten the process of forming a wire material piece including a returned part by moving back the tip of a newly formed square wire material by a prescribed extent and then crushing its tip return, performing chambering operation, and then moving the wire material forth and cutting wire material pieces. CONSTITUTION:A punch 26 is lowered to form a metallic terminal 2' from the tip part of a wire material 4. Then, a carrier 23 is moved right (forth) and a carrier 21 is moved right (back) to stop the new tip surface of the wire material 4 above a guide hole 30. Then, a chamfering punch 29 is elevated. The terminal 2' is inserted into the through-hole 14 of an insulator 1 in the carrier 23, and said tip surface of the wire material 4 is pressed by a punch 29 to crush its return, thus forming a chamfer. Then, a carrier 21 for holding a completed connector 3' is moved back and a carrier where the wire material 4 is mixed is moved forth by an extent corresponding to the sum of its backward movement extent, the length of the terminal 2', and the length of the wire material cut by the punch 26.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for shearing and chamfering a rectangular material, in particular, a method for shearing and chamfering a long rectangular wire material, particularly when a long rectangular wire material is sheared every predetermined length. Concerning the method of crushing and surface-filling the filler each time, for example, as shown in FIG. It is made by molding an insulator l having through-holes for attaching terminals 2, and press-fitting terminals 2 made of square cross-section wire into each of the scissor through-holes.

FIG. 2 shows a conventional device Jl! that cuts a square wire into a predetermined length to create a terminal 2 and attaches it to an insulator 1. 4 is a nonagonal wire wound on a reel (not shown) and guided out from the reel, and 5 is a wire 40 that can clamp a predetermined portion and feed the wire 4 by a fixed amount. 6 is a mold for cutting out a part of the wire 4; 7 is a mold that can be moved left and right to hold the insulator 1 and insert the terminal 2 into the insulator 1; The insulator carrier, 8, is the device base.The fixed clamp 9 of the material carrier can be moved up and down), and when it is moved downward, a part of the wire 4 is fixed to the middle holder 5. When raised IIk, the above fixing becomes open 0
The mold is equipped with a die 11 having a through hole 10 and a punch 12 that can move up and down, a wire #40 guide hole 1s passes through it, and the punch ISO tip fits into the through hole 10Km1.

In such a device, all CI) raises the punch 12 and K) moves the Yariya 1 to the left (backward);
The carrier device has been moved to the right 5 (backwards) and is in good condition, with a predetermined portion fixed to the carrier 5 and the round wire 40 wire portion inserted into the guide hole 13@And, it has been sheared by the previous vertical movement of the punch. The end surface of the round wire rod 4 has a die through hole 10.
o, the tip of the wire 4 is aligned with the front side wall, and then the middle wire 4 moves to the left by a predetermined amount (moves forward). As a result, the tip of the wire 4 is aligned with the die 1 as shown in
When it protrudes by a predetermined amount from 1, the insulator moves downward, and then moves to the right (advance), and a part of it protrudes into the guide hole 13, as shown in Fig. Fitting: The intermediate portion of the terminal 2 is inserted into the through hole 14 (first all (a)) K of the insulator I. Note that the rattan diagram 2 is shown to be made by cutting the l*OIl material 4 to an appropriate length and inserted into the nine terminals or the insulator l, but in reality, multiple wires 4 are connected to the paper surface. The plurality of wire rods, which are arranged in parallel in the right angle direction, are cut at the same time by one bolt 12 and inserted into the insulator 1 at the same time, thereby producing the connector 3 shown in FIG. 1.

Well, the carriers 5 and 7 are operated by air cylinders that are interlocked with each other.

As shown in an enlarged view in FIG. 3, the tip of the terminal 2 has a shear sag 15 formed on the upper surface, while a protruding lower surface 16 is formed at the insertion side tip of the terminal 2. The refill 16 scrapes the wall surface of the through hole 14 of the insulator 1 when it is inserted into a round shape, and the shavings need to be removed. There was a drawback in that the burr 16 had to be crushed separately for the purpose of preventing damage.

11° Fig. 4 is a side sectional view showing an example of the crushing process, in which the insertion side tip of the terminal 2 protruding into the inside of the insulator l is formed opposite to each tip of the fixed metal 11117 and the movable metal m1g. The protrusions 19 and 20 strongly sandwich and press the barb 16 so as to crush it.The object of the present invention is to eliminate the above-mentioned drawbacks), and by creating this purpose-oriented metal terminal, a new nonagonal shape is formed. Shearing of a square wire rod characterized in that the tip of the wire rod is moved back by a predetermined amount and the burr of the tip is crushed to form a surface IETl, and then the wire rod is advanced by a predetermined amount to cut and create a metal terminal. A connector equivalent to connector 3 shown in FIG. The present invention will be explained with reference to FIG. In FIG. 5 showing the configuration and operation of the main parts, 21 is a wire carrier that can clamp a predetermined portion of the wire 40 derived from a reel (not shown) and can move laterally to move the wire 4 backward; 22 is a gold layer for cutting out a part of the wire 4 to create a metal terminal 1' and chamfering the lower side of the solder tip of the newly formed wire material; 23 is a metal terminal 1 for holding the insulator 1; An insulator carrier that can be moved left and right for inserting the metal terminal 2' into the body; 24 is a device base; A clamp 2. which can move laterally and is attached to the carrier 21. '5 moves up and down in conjunction with the carrier 21 to fix a part of the wire 4 or release the cough fixation. On the other hand, the mold 22 has punches 26 and 2 for cutting the wire 4, and punch 2 for cutting the wire rod 4.
a goo 28 provided with a through hole 27 into which the tip of 6 is inserted;
Chamfering 9 (for burr crushing) Punch 29 and die 28 to form a guide hole 30 for the punch 29 (at block 31, etc.), guide hole for the wire 4 that crosses the gouer 28, guide hole 30, and block 31 32, the upper end of the guide hole 300 is connected to the upper end of the guide hole 300, and the upper surface of the connecting portion of the guide hole 30 becomes a pressure receiving surface facing the punch 28.
In this case, the punch 26 moves downward to create a metal terminal 2' from the tip of the wire 4, and the mosquito device is in good condition. At the same time, the carrier 21 moves to the right by an appropriate amount (
After the new end surface of the wire rod 4 comes to stop above the guide hole 30, the chamfering punch 29 moves upward and the chamfering punch 29 moves up as shown in FIG. 5(b). ), the through hole 14 of the terminal 2' insulator l (2nd WJ (I
)), and the end surface of the wire rod 40 is chamfered with a punch 2.
9 crushes the barb I (16) as shown in FIG. 3, and the chamfer 33 is crushed as shown in FIG.
0 After that, the terminal 2' is completed by inserting the insulator IK. The connector 23 holding the connector 3' moves to the left (retreats), and the punch 26 moves upwards and moves. When the chamfering punch 29 moves downward, the wire carrier 21 to which the wire 4 is fixed is moved leftward by a predetermined amount ((2) forward) and the wire rod 4 □, j,
LLeeya7. Ya2□. i-1□(Eng.

T=, which is not mentioned in Fig. 5(a), is obtained by adding the retraction amount of the carrier 21, the length of the terminal 2', and the length of the wire cut by the punch 26, and is expressed as a nine value. In Fig. 5(6), , the lower edge of the tip is chamfered) 4
protrudes to the left of the gold 1122 by a predetermined amount, and the new insulator 1 is held on the retreated carrier 23 instead of the connector 3'.Then, the punch 26 moves downward to drive the device. On the other hand, the carrier 21, which has lifted the clamp zstJi to release the fixation of the wire 4, moves to the right by an amount equal to the sum of the length of the terminal 2' and the length of the wire to be cut by the punch 26 (after moving backward, the carrier 21 lowers the clamp 2s). The wire rod 4 is now fixed to the middle wire 21 by moving the wire rod 4, and this state is shown in FIG. 5 (-).

Thereafter, by repeating the above operation, the metal terminal 2' formed on the sheared surface of the insertion device and having a chamfered shape crushed and chamfered.
are created one after another, and the terminal 2' is connected to the carrier 2.
3Km primary hold and insert into 9 insulators 1 ◎In addition, the 5th wAKTo is a plurality of wire rods 4, 3゜ wires are paralleled in the direction perpendicular to the paper surface, and the multiple wire rods are 11110 punch 26. After being cut off at the same time, 14a
As explained above (According to Honjitsu 911, when the wire is sheared one after another at a certain length, the newly formed nine-line key tip image is Therefore, if a certain length of owsw piece is inserted into an insulator made of plastic, the wire rod piece of the electrified insulator will be crushed. There are effects such as eliminating inconveniences such as damaging the wearing hole and creating scraps, and shortening the process of creating the lI# piece O for meeting the burrs.

[Brief explanation of the drawing]

Figure 2 is a perspective view of the connector, and Figure 1 is a diagram of a conventional apparatus for assembling the connector and making its metal terminals. 311 is an enlarged side view of the insertion side tip of the terminal; FIG. 4 is a side sectional view showing an example of a conventional method for crushing the barb of the tip; FIG. A side cross-sectional view for explaining the main part configuration and operation of a device for assembling a connector and producing a metal terminal for a connector according to an embodiment of the method of the present invention, No. 6
This is an enlarged side view showing the shape of the tip for inserting the metal terminal (i.e., the newly formed tip of the wire) shown in the figure ml line lIs and made of nine devices. Insulator carrier, 9, 2s is a clamp, 11, 2g is a guide, 12.
26 is a wire rod new moon punch, 13° 32 is a wire guide hole, 29 is a chamfering punch, 30 is a guide hole for punch 29,
7/', 1 Figure 1 ゛ 7-2 Figure CO+] (ν) P2 Figure (C) Showing the mold block of 31 companies.

Claims (1)

[Claims] In a method of shearing a long rectangular cross-section wire to a desired length and eliminating the burrs generated on the tip surface of the wire by using a crushing means, a wire shearing punch and a burr crusher for crushing the tip of the wire are used. In a rectangular wire shearing/chamfering device equipped with a punch, the tip of the round wire that has been formed by shearing is retracted to the position of the crushing punch, and then
The wire rod is moved forward by an amount equal to the sum of the length of the wire rod piece to be sheared and the amount of retreat. Shearing of square wire rods. How to take pictures◎