JPS6292425A - Lead terminal forming equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lead terminal forming device, and more specifically, the present invention relates to a lead terminal forming device, and more specifically, it cuts the lead terminals of an electrolytic capacitor with lead terminals in the same direction to a predetermined length, and The present invention relates to a lead terminal forming device that bends in a direction.

[Technical Background of the Invention] As shown in FIG. 8, this type of electrolytic capacitor has a pair of lead terminals 2a and 2b drawn out in the same direction from the capacitor body case 1. terminal 2
It is attached to a circuit board (not shown) via terminals a and 2b, but in that case, lead terminals 2a and 2b are pre-drilled in the circuit board in order to speed up the mounting work. It must be shaped to match the spacing of the mounting holes. FIG. 8 shows a typical example of this, in which the distance between a pair of lead terminals 2a, 2b is widened to fit a mounting hole (not shown), and FIG.
An example is shown in which dogleg-shaped locking portions 3, 3 are further formed at predetermined portions of b to prevent accidental falling off during the soldering process. However, with such a shape of the lead terminal, the capacitor case body 1
Since the lead terminals are placed vertically relative to the circuit board, even if the lead terminals are cut as short as possible, it is difficult to reduce the height when mounting the circuit board to the circuit board. cannot respond to the current situation. In addition, the conventional method for forming lead terminals is to form them into a predetermined shape through a cutting process, a bending process, and a spacing correction process after drawing the lead wire, resulting in poor production efficiency. Improvement was desired.

[Objective of the Invention] This invention was made in view of the above-mentioned drawbacks of the conventional art.The object of the present invention is to arrange the capacitor main body case horizontally with respect to the circuit board so as to increase the mounting height as much as possible. Cutting of the lead terminal in order to form the lead terminal so that the material can be kept low.

It is an object of the present invention to provide a lead terminal forming device capable of performing the steps of bending and spacing correction almost simultaneously.

[Embodiment] The present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

As shown in FIGS. 1 and 2, this lead terminal forming device is designed such that the capacitor main body case 1 can be placed horizontally on a circuit board (not shown).
, 2b at almost right angles in the same direction, and FIG. 1 shows a first example in which each lead terminal 2a, 2b is bent at the same location. Figure 2 shows one lead terminal 2a and the other lead terminal 2a.
A second example is shown in which the parts b are bent at different positions in the same direction at approximately right angles, and in particular, according to this second example, it is possible to straddle the solder land of the circuit board. .

This lead terminal forming device bends and forms each lead terminal 2a, 2b through a series of operations, and as shown in FIGS. The present invention includes a first mold 11 and a second mold 12 that approaches and moves away from the first mold 11. According to this embodiment, the second mold 12 is attached to a holding frame 13 erected on the base 10 so as to be movable up and down. That is, the holding frame 13 is provided with a slide member 14 that is slidable in the vertical direction along, for example, a dovetail-shaped guide groove, and the second mold 12 is attached to the lower end of this slide member 14. It is being Although not shown in detail in the drawings, the slide member 14 is connected to a drive source, such as a geared motor 17, via a rotational linear motion conversion mechanism including a connecting shaft 15 and a disc rank 16.

Referring to FIG. 5, the first mold 11 includes a pair of female holes 19 and 20 arranged in parallel with a partition wall 18 in between. In this case, the partition wall 18 protrudes from the upper surface of the first mold 11 at a predetermined height, and each lead terminal 2a, 2
It has the function of correcting the distance b to be parallel. Each female hole 1
9 and 20 are formed in a rectangular shape with the partition wall 18 as one side, and the depth width W along the partition wall 18 is equal to each female hole 19° 20, so that each lead terminal 2a
.

The lengths of the mounting legs for the circuit board 2b are formed to be equal. That is, if the length of the bent mounting leg is L, there is a relationship of Q v "W. In this way, each female hole 19
, 20 have the same depth width W, but in this embodiment, the female holes 19 and 20 are arranged slightly offset because the lead terminals 2a and 2b are bent at different locations as shown in FIG. There is.

That is, in FIG. 2(B), one lead terminal 2
If the distance from the base end of the case of a to the bent part is dl, and that of the other lead terminal 2b is d2, one female hole 1
9 and the front end surface 11a of the first mold 1J, there is a distance dl, and between the other female hole 20 and the front end surface 11a, there is a distance d2. In addition, in order to bend both lead terminals 2a and 2b from the same part as shown in FIG. 1, dl and d2 in FIG. 5 may be made equal.

The second mold 12 has a pair of male members 21 and 22 that are inserted into the female holes 19 and 20 formed in the first mold 11, respectively. This male member 21.22
Since it is generally symmetrical, the structure of the male member 22 will be described here with reference to FIG. 6, and the same reference numerals will be given to the same parts of the male member 21, and the explanation thereof will be omitted. This male member 22 is made of a rectangular prism that is inserted into the female hole 20.
A blade portion 2 that cuts the lead terminal 2b between the rear edge of the opening and the rear edge of the opening.
3 and the lead terminal 2b cut by this blade part 23
a tapered portion 24 that presses the above-mentioned partition wall 18 to straighten it into a straight line, and an inner wall 20a facing the female hole 20 (see FIG. 7).
A bending wall 25 is formed along which the lead terminal 2b is bent at a substantially right angle. An auxiliary taper portion 26 is provided.

Note that a gap 27 is provided between the male members 21 and 22 to fit into the partition wall 18 .

Next, the operation of this invention will be explained. First, each lead terminal 2a, 2b is set on the female holes 19, 20 on both sides using the partition wall 18 as a guide. In that case, the open end of the capacitor body case 1 is connected to the front end surface Ll of the first mold 11.
It is best to position it by pressing it against a. Next, when the guard motor 17 is operated to lower the second mold 12, the male member 21 is lowered as shown in FIG.
．． Lead terminals 2a, 2 at each tapered portion 24.24 of 22
b are pressed against the corresponding side surfaces of the partition wall 18 and straightened into straight lines so that they are parallel to each other, and each blade part 2
At 3 and 23, it is cut to a predetermined length.

When the second mold 12 is further lowered, the lead terminals 2a, 2b cut to a predetermined length are removed from the auxiliary tapered portions 26', 2B.
After being bent downward at the bending wall 25.
At 25, opposing inner walls 19a, 20 of each female hole 19, 20
It is bent almost at right angles along a. In this way,
During the lowering operation of the second mold 12, the lead terminal 2a
, 2b are performed at the same time. However, according to this embodiment, when the second mold 12 is pulled up after forming the lead terminal, the capacitor is removed from the first mold 12. It is automatically ejected from the mold 11. That is, referring again to FIGS. 3 and 4, a knock plate 32 for protruding a lead terminal is provided on the front end surface 11a of the first mold 11 and moves up and down along the front end surface 11a. is a support column 28 that supports it, and a swing lever 2 provided at the bottom of the base 10.
9 and a relay shaft 30, it is operatively connected to a cam body 31 fitted to the output shaft of the geared motor 17. In this case, the cam body 31 does not act on the relay shaft 30 during the lowering operation of the second mold 12, but presses down the relay shaft 30 during the upper operation of the second mold 12, thereby causing the swing lever 29
The timing is controlled so that the knock plate 32 is pushed through the column 28. In addition, in this embodiment, as clearly shown in FIG.

A pair of guide grooves 11b and llb are provided on the front end surface 1.1a of the first mold 11 on both sides of the partition wall 18 and are formed in parallel thereto. One end side has two working pieces 32a corresponding to the guide grooves 11b and llb.

32a. The plate thickness of the working piece 32a is preferably approximately the same as or thinner than the depth of the guide groove 11b, so that the capacitor after molding is connected to the lead terminals 2a, 2 by each working piece 32a of the knock plate 32.
The proximal end of b is pushed up to protrude upward.

Further, unlike the above embodiment, the second mold 12 may be directly moved downward by an air cylinder or the like, and further, depending on the case, the first mold 11 may be deformed to move. It is also possible to do so.

[Effect] As is clear from the above description of the embodiment, according to the present invention, each lead terminal 2a, 2b is folded at right angles in the same direction as shown in FIGS. 1 and 2. When bending the capacitor body case 1 so that it can be placed horizontally on a circuit board, the steps of cutting the lead terminals 2a and 2b, correcting the gap, and bending can be performed all at once.
It is possible to significantly improve production efficiency compared to conventional methods, and at the same time, it is possible to simplify manufacturing equipment, etc.
The effect is remarkable.

The first and second examples of capacitors having lead terminals molded using a molding device are shown in FIG.
) respectively show a plan view, FIG. 3 is a side view of the molding device, FIG. 4 is a front view of the molding device, and FIG. 5 is a diagram showing the first and second molds of the molding device separated. Perspective view shown, No. 6
The figure shows one male member of the second mold, and the same figure (A)
is a front view, FIG. 7 is a side view, FIG. 7 is a partial cross-sectional view of the molding device, and FIGS. 8 and 9 are views of conventional capacitors. FIG. 2 is a side view showing the shape of a lead terminal.

In the figure, ■ is the capacitor body case, 2a, 2b are lead terminals, 11- is the first mold, 12 is the second mold, 18 is the partition wall, 19.20 is the female hole, 21.22 is the male Part, 23
24 is a blade portion, 24 is a tapered portion, 25 is a bending wall, 26 is an auxiliary taper portion, and 32 is a knock plate.

Claims (7)

[Claims] (1) 1 in lead terminal same direction type electrolytic capacitor
In a lead terminal forming device for cutting a pair of lead terminals to a predetermined length and bending each cut lead terminal in the same direction, two terminals arranged in parallel across a partition wall are used.
A first mold having a pair of female holes, and a second mold including a pair of male members to be inserted into the female holes, each of the male members having a pair of female holes. a blade portion that cuts the lead terminal between the edge of the blade portion, a tapered portion that straightens the lead terminal cut by the blade portion into a straight line parallel to each other along the partition wall; A bending wall is provided for bending the lead terminal at a substantially right angle between the opposing inner wall of the hole, and each of the lead terminals is arranged in a different female hole, and the male member is connected to the corresponding female hole. A lead terminal forming device characterized in that the cutting, straightening, and bending of the lead terminal are performed in a series of operations by inserting the lead terminal into the hole. (2) The lead terminal forming apparatus according to claim (1), wherein the partition wall protrudes by a predetermined height from the upper surface of the first mold. (3) In claim (1), each female hole is
A lead terminal forming device characterized in that its depth and width are the same. (4) In claim (1), each of the female holes is
A lead terminal forming device characterized in that the lead terminal forming device is arranged so as to be shifted in the front and back direction when viewed from the end surface side of the first mold in which the capacitor is set. (5) In claim (1), the male member is provided with an auxiliary taper portion for bending the lead terminal having a predetermined angle from the blade portion toward the bending wall. Characteristic lead terminal forming equipment. (6) The lead terminal forming device according to claim (1) or (5), wherein the pair of male members are bilaterally symmetrical. (7) In claim (1), (2) or (4), the first mold is provided with a knock plate for releasing the capacitor after lead terminal molding. A lead terminal forming device featuring: