JPH0338880Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electronic component chuck device for chucking a lead portion of an electronic component and inserting the lead portion into an insertion hole of a printed circuit board.

[Prior Art] As shown in FIG. 7, an electronic component 10 has lead parts 10a and 10b inserted into insertion holes of a printed circuit board 11, and then soldered to connect the lead parts 10a and 10b to the printed circuit board. It is fixed to the substrate 11. The lead parts 10a and 10b are inserted into the insertion holes of the printed circuit board 11 by the chuck claws of the electronic component chuck device.
This is done by checking a and 10b.

The claw of the conventional electronic component chuck device is shown in Fig. 8a.
As shown in FIG.
The lead parts 10a, 10b are positioned by the positioning parts 12a, 13a, 14a of No. 3, 14. Then, the claws 12, 13 and 14 move horizontally relative to the printed circuit board 11 and are positioned above the insertion hole of the printed circuit board 11, and then the tips of the lead parts 10a and 10b are inserted into the printed circuit board 11. It is lowered until it is located slightly above the insertion hole. Thereafter, while the top of the electronic component 10 is pressed by a pressing rod (not shown), the escape direction B of the left and right claws 13 and 14 escapes in a direction perpendicular to the escape direction A of the center claw 12, thereby opening the chuck. As a result, the lead portions 10a, 10b
is automatically inserted into the insertion hole of the printed circuit board 11.

In addition to the above-described three chuck pawls, as shown in FIG. 8b, the central pawl 12 shown in FIG. A chuck claw structure is also known.

[Problems to be solved by the invention] However, in the structure of the three chuck pawls 12, 13, 14 shown in FIG. 8a (the same is true for the two chuck pawls 13, 14 shown in FIG. ), as shown in Fig. 7, the lead part 1 of the electronic component
When 0a and 10b are straight, the relationship between the chuck force of the chuck pawls 12, 13, and 14 and the knock-out force of the pressing rod is very delicate, and if the knock-out force of the pressing rod is too strong, the chuck pawl may not open before it opens. The electronic component is pushed out and the lead part 1
The positions where the chucks 0a and 10b are chucked vary, and the lengths of the lead portions 10a and 10b protruding from the tips of the chuck claws 12, 13, and 14 are not constant. On the other hand, since the lead parts 10a and 10b are generally not straight and have a tendency to bend in either direction, if there is a large variation in the position of the chuck as described above, the lead parts 10a and 10b open when inserted.
There was a problem in that the tips of a and 10b came off the insertion hole and hit the printed circuit board 11, resulting in a poor insertion rate.

An object of the present invention is to provide an electronic component chuck device that can improve the efficiency of inserting electronic components into a printed circuit board.

[Means for Solving the Problems] The structure of the present invention for solving the problems of the above-mentioned prior art will be explained with reference to FIGS. 4 to 6, which correspond to embodiments. Positioning portions 22b having bottom portions 22a that support the tips of the lead portions 10a, 10b of the electronic component 10 shown in FIG. 7 are formed on both sides of the chuck portion at the tip of the central claw 22, respectively. On the other hand, the left and right claws 23 and 24 have positioning portions 22b and 22b of the center claw 22 at their tips, respectively.
Positioning portions 23a and 24a are formed to position the lead portions 10a and 10b in cooperation with the lead portions 10a and 10b.

[Function] When the lead parts 10a, 10b of the electronic component 10 are positioned by the positioning parts 22b on both sides of the center claw 22 and the positioning parts 23a, 24a of the left and right claws 23, 24, the lead parts 10a, 1
Since the tip of the lead 0b is supported by the bottom 22a of the central claw 22, the lead parts 10a, 10b are always positioned at a constant position and are not pushed out by the knockout force of the pressing rod 39.
Therefore, first, the center claw 22 opens and the lead part 10 opens.
When the bottom part 22a of the center claw 22 is removed from the center claws 22a and 10b, and the left and right claws 23 and 24 are subsequently opened, the lead parts 10a and 10b are securely inserted into the insertion holes of the printed circuit board 11 by the knockout force of the pressing rod 39. inserted.

[Example] Hereinafter, the present invention will be explained with reference to the illustrated example.
FIG. 1 is a vertical sectional view showing an embodiment of the electronic component chuck device according to the present invention, and FIG. 2 is a 2-2 diagram in FIG.
3 is a sectional view taken along the line 3-3 in FIG. 1, FIG. 4 is an enlarged sectional view when the pressing rod is omitted in FIG. 3, FIG. 5 shows the central claw, and a is a front view. Figure, b is a side view.

A claw holder 21 is fixed to a cylindrical electronic component insertion shaft 20 that can be moved vertically and horizontally relative to the printed circuit board by a drive means (not shown). As shown in FIGS. 3 and 4, the claw holder 21 has a fan-shaped lower part, and three claw grooves 21a, 21b, and 21c are vertically formed inside. These claw arrangement grooves 21a, 21
In this embodiment, the left and right pawl arranging grooves 21b and 21c are formed at positions shifted by 45 degrees from the central pawl arranging groove 21a. A center claw 22, a left claw 23, and a right claw 24 are arranged in the claw arrangement grooves 21a, 21b, and 21c, respectively,
The three claws 22, 23, 24 are respectively attached to the claw holder 2.
It is rotatably attached by a pin 25 fixed to 1.

As shown in FIGS. 4 and 5, on both sides of the chuck portion at the tip of the central claw 22, there is a positioning member having bottom portions 22a for supporting the tips of the lead portions 10a, 10b of the electronic component 10 shown in FIG. Part 22b
are formed respectively. On the other hand, the left and right claws 2
3 and 24 are provided with the central claw 22, respectively.
a positioning part 23 that positions the lead parts 10a, 10b in cooperation with the positioning parts 22b, 22b;
a, 24a are formed.

As shown in FIGS. 1 and 2, the claws 22, 2
3 and 24 are provided with pins 27, respectively, so that the roller 26 partially protrudes inward from the claws 22, 23, and 24.
It is rotatably attached via the here,
The roller 26 of the center claw 22 is provided slightly above the rollers 26 of the left and right claws 23 and 24. A stopper screw 28 for regulating the closed position of the claws 22, 23, 24 is screwed into the claw holder 21. Further, springs 29 are disposed between the claws 22, 23, 24 and the claw holder 21, respectively.
24 are biased in the direction in which they are pressed into contact with the stopper screw 28, that is, in the direction in which the chuck claw portions at the tips of the claws 22, 23, and 24 are closed.

An arbitrary driving means, such as an air cylinder 35, is fixed to the upper part of the electronic component insertion shaft 20, and a vertical movement shaft 36 is fixed to the operating rod 35a of the air cylinder 35. The vertically moving shaft 36 is vertically movably disposed on the electronic component insertion shaft 20 via a bush 37, and a pawl opening/closing cam 38 having a conical lower end is fixed to its lower part. A press rod 39 is disposed within the vertically movable shaft 36 and is movable up and down and protrudes downward.
The pin 40 fixed to the vertical groove 36 of the vertical movement shaft 36
It is inserted into a. Further, the pressing rod 39 is urged downward by a spring 41.

Next, the effect will be explained. Currently, 10 electronic components
The lead parts 10a, 10b of the claws 22, 23, 24
I will explain from the checked state. The electronic component insertion shaft 20 is horizontally moved relative to the printed circuit board 11 to open the insertion hole 1 of the printed circuit board 11.
1, followed by lead parts 10a, 10
b is lowered to a position slightly above the insertion hole of the printed circuit board 11. In this state, the air cylinder 35 is activated and the vertical movement shaft 36 is lowered. As a result, the pressing rod 39 is lowered together, and the pressing rod 39 presses the top of the electronic component 10 by the biasing force of the spring 41.

Further, as the vertical movement shaft 36 descends, the claw opening/closing cam 38 also descends, and the roller 26 is pushed outward by this cam 38, and the claws 22, 23, 2
4 are rotated about the pin 25 in a direction away from the lead portions 10a, 10b, and 10c (opening of the chuck). Although FIG. 6 shows a state in which the central pawl 22 has rotated and escaped as indicated by the two-dot chain line, the other two pawls 23 and 24 operate in the same manner. In this case, the cam 38 first has a central pawl 2.
The roller 26 of No. 2 hits, and then the left and right claws 23, 24
Since the roller 26 hits the center claw 22, the center claw 22 opens first, and then the left and right claws 23, 24 open. When the center claw 22 opens, the lead portion 10a of the electronic component 10,
Since the bottom part 22a supporting the electronic component 10b is removed, the electronic component 10 is pushed down by the pressing rod 39, and the tips of the lead parts 10a and 10b are inserted into the insertion holes of the printed circuit board 11. Subsequently, the left and right pawls 23 and 24 open the lead portions 10a and 10b and are removed from below the electronic component 10, whereby the electronic component 10 is further pushed down by the pressing rod 39 biased by the spring 41. , the lead parts 10a and 10b are completely inserted into the insertion holes of the printed circuit board 11. At this time, the positioning parts 23a and 24a of the left and right claws 23 and 24 are attached to the center claw 22 as shown in FIG. It is desirable to form it so as to surround it in the direction of movement.

Next, the electronic component insertion shaft 20 is raised and moved in the direction of the receiving position of the electronic component 10 to be chucked next. When the electronic component insertion shaft 20 is positioned above the electronic component 10 at the receiving position, the air cylinder 35 is operated in the opposite direction to that described above, and the vertical movement shaft 36 is raised. This allows the pressing rod 39
The pawl opening/closing cam 38 also rises. When the pawl opening/closing cam 38 rises, the pawls 22, 23, and 24 engage the pin 2.
5 in the opposite direction to the above, that is, the positioning portion 2
2b, 23a, 24a approach the lead parts 10a, 10b to be checked, and the lead parts 10a, 10
Check b.

By the way, the claws 22, 23, 24 are connected to the lead portion 10.
When the chucks a and 10b are released, as is clear from FIG. 4, the left and right pawls 23 and 24 escape in the direction B, which is inclined at 45 degrees with respect to the escape direction A of the central pawl 22. Even if other electronic components and their leads 10a, 10b already inserted into the printed circuit board 11 are present outside the left and right claws 23,
24 can escape without interfering with these electronic components or their leads. Therefore, the electronic components 10 can be arranged on the printed circuit board 11 at a high density.

As described above, since the bottom portions 22a are formed in the positioning portions 22b on both sides of the central claw 22,
The tips of the lead parts 10a and 10b of the electronic component 10 are supported by the bottom part 22a, and the claws 22, 23, 2
The lead parts 10a and 10b do not protrude beyond the tips of the lead parts 4. Therefore, the lead parts 10a, 10b do not come into contact with the printed circuit board 11 due to the lowering of the claws 22, 23, 24, and the subsequent claws 2
2, 23, 24 and the knockout force of the pressing rod 39, the lead parts 10a, 10b are opened.
is securely inserted into the insertion hole of the printed circuit board 11.

In the above embodiment, the case where the electronic component 10 has two lead parts 10a and 10b has been described, but it goes without saying that the present invention can be similarly applied to an electronic component having three lead parts.
In this case, the positioning parts 22 on both sides of the central claw 22
This can be easily achieved by adding a positioning part that does not have the bottom part 22a between the points 22b and 22b.

In the above embodiments, an electronic component chuck device having three chuck claws has been described, but an electronic chuck device as shown in FIG. A component chuck device can be implemented in exactly the same way. In this case, the configuration of the electronic component chuck device is as follows:
It is the same as in Fig. 1, and the central claw 2 in Figs. 2 and 3.
2 is removed and the left and right claws 23 and 24 in FIG. An electronic component chuck device for insertion is constructed.

In an electronic component chuck device that chucks and inserts the lead parts 10a, 10b of the electronic component 10 with two chuck claws 23, 24, the two chuck claws 22, 23
Since both are opened at the same time, it is desirable that the bottom portions (not shown) of the positioning portions 22a and 23a of the chuck pawls have the same shape.
Furthermore, in order to minimize the movement of the lead part of the electronic component from the positioned position due to the movement of the bottom part of the chuck pawl when the chuck is opened, this bottom part has a minimum size that allows the lead part to be locked. Satoshi,
It is desirable to have a slope in the direction in which the lock is released.

[Effects of the invention] As is clear from the above explanation, according to the invention, the positioning portion of the center claw is formed with a bottom, so that the lead portion of the electronic component is supported by the bottom of the center claw. It is inserted securely into the insertion hole of the printed circuit board.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing an embodiment of an electronic component chuck device according to the present invention, and FIG.
2 line sectional view, Figure 3 is a 3-3 line sectional view of Figure 1,
Fig. 4 is an enlarged cross-sectional view when the pressing rod is omitted from Fig. 3, Fig. 5 shows the central pawl, a is a front view, b is a side view, and Fig. 6 is a side view showing the operation of the central pawl. , FIG. 7 is a state diagram in which an electronic component is inserted into a printed circuit board, and FIGS. 8a and 8b are respectively explanatory diagrams of the operation of the claws of a conventional electronic component chuck device. 10: electronic component, 10a, 10b: lead part,
22: center claw, 22a: bottom, 22b: positioning part, 23: left claw, 23a: positioning part, 24: right claw, 24a: positioning part.

Claims (1)

[Scope of utility model registration request] In an electronic component chuck device that chucks the outer periphery of an electronic component's lead part with opposing chuck claws that can be opened and closed and inserts it into a printed circuit board, a positioning part that positions the lead part of the electronic component by checking the outer periphery of the lead part of the electronic component with the chuck claws. What is claimed is: 1. An electronic component chuck device characterized in that a positioning portion of at least one of the opposing chuck claws is provided with a bottom portion for supporting a tip of a lead portion.