JP2544318Y2 - Positioning pin device - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention is used for manufacturing a printed circuit board made of glass epoxy, a flexible printed circuit made of polyimide, or a printed circuit board on a transparent table for placing a substrate in an optical board inspection apparatus. The present invention relates to a positioning pin device for positioning a substrate to be inspected such as a mask of an original pattern.

[0002]

2. Description of the Related Art An optical board inspection apparatus, for example, mounts a printed wiring board, which is a board to be inspected, on an inspection table, positions it by a positioning pin device, and forms a wiring pattern formed on the board to be inspected. Is detected by a camera, and the data of the read image is compared with the data of the master pattern to find a defective portion on the substrate to be inspected.

As a positioning pin device attached to this device, for example, as shown in FIG.
The one disclosed in Japanese Patent No. 63735 is known.
Here, reference numeral 110 indicates the entire positioning pin device. As shown in FIG. 8, the positioning pin device 110 includes a pair of positioning pins 111, 111, and each positioning pin 111.
And a pair of positioning blocks 120 on which are fixed. The pair of positioning blocks 120 are provided with grooves 13 recessed in a base frame 131 of an inspection table 130 for mounting a substrate to be inspected.
2 so that the pin interval can be adjusted freely. Then, the pair of positioning pins 111.
The board to be inspected 8 is positioned by fitting a pair of pin holes (not shown) of the board to be inspected 11 into the pin 11.

In recent years, a light-transmitting table made of a light-transmitting material such as glass or resin is sometimes used as an inspection table of the above-mentioned optical substrate inspection apparatus. In recent board inspections, it is desired to inspect not only the wiring pattern on the surface of the board to be inspected but also the position and size of through holes such as component insertion holes formed in the board to be inspected. Is required.

However, in such a case, in the conventional positioning pin device 110 shown in FIG.
Since 11 is located on the non-light-transmitting base frame 131 around the inspection table 130 which is a light-transmitting table, the side edge portion 8a on the side of the substrate 8 to be inspected on which the pin holes are formed.
However, it protrudes from the translucent area of the inspection table 130 that can be inspected by the transmitted light, and it becomes impossible to inspect the side edge portion 8a by the transmitted light. In addition, it is not desirable to directly attach the positioning pins in the light-transmitting region of the inspection table 130 made of a light-transmitting material such as glass or resin because of the difficulty of the mounting operation.

In order to eliminate such inconvenience, for example, FIG.
As shown in the figure, a pin plate 112 made of an extremely thin metal plate is used.
Is fixed to the non-translucent base frame 131 via the pair of positioning blocks 120, and the pin plate 112
Of the substrate 8 to be inspected, a positioning pin 111 is erected at the distal end 112b, and a side edge portion 8a of the substrate to be inspected 8 on the pin hole forming side is transparent. What is necessary is just to position on the light area 5.

[0007]

However, in the conventional example shown in FIG. 9, the pin plate 112 is required to be extremely thin in order to maintain good inspection accuracy. Therefore, the substrate 8 to be inspected is almost in close contact with the light transmitting plate 5, and the side edge portion 8 of the substrate 8 to be inspected on the pin hole forming side
It becomes difficult to remove the substrate to be inspected 8 by putting a fingertip on the gap between the light transmitting plate 5 and the light transmitting plate 5. Also, when the substrate 8 to be inspected is removed by applying excessive force, the positioning pins 111 are twisted and broken. The present invention has been made in consideration of such circumstances. B. Inspection of the side edge portion 8a on the pin hole forming side of the substrate to be inspected by transmitted light is enabled; It is an object of the present invention to facilitate removal of a substrate to be inspected positioned by a positioning pin and to prevent the positioning pin from being broken due to twisting.

[0008]

The present invention is configured as follows to solve the above-mentioned problems. That is, in a positioning pin device for positioning a substrate to be inspected by projecting a positioning pin on a light transmitting table for mounting a substrate of an optical substrate inspection device and fitting a pin hole of the substrate to be inspected into the positioning pin, It consists of a positioning pin and a pin support plate formed of an elastically deformable leaf spring material,
The pin support plate has a pin fixing portion for erecting the positioning pin,
A board push-up portion located on the outer periphery of the pin fixing portion in the vicinity of the positioning pin, a connecting portion connecting the board push-up portion to the base end of the pin fixing portion, and a pressing lever connected to the board push-up portion across the connecting portion; The pin fixing portion is attached to a non-light-transmitting base frame around the light-transmitting table at its base end,
The erected positioning pins extend into the light transmitting area so as to be located on the light transmitting area of the light transmitting table, and push down the pressing lever with the connecting portion as a swing fulcrum to push up the substrate to be inspected with the substrate push-up portion. It is characterized by having comprised in.

[0009]

According to the present invention, when the substrate to be inspected is positioned, the pin fixing portion of the pin support plate transmits light so that the standing positioning pin is positioned on the light transmitting area of the light transmitting table. Extending into the area. Then, the side edge portion on the pin hole forming side of the substrate to be inspected positioned by the positioning pins is located on the light transmitting region. Therefore, it is possible to inspect the side edge portion on the pin hole forming side with the transmitted light. When removing the substrate to be inspected, the pressing lever of the pin support plate is pressed down. Then, the board push-up portion extending to the vicinity of the positioning pin pushes up the board to be inspected by using the connecting portion as a swing fulcrum. As a result, the pin hole of the substrate to be inspected is disengaged from the positioning pin, and the side edge portion of the substrate to be inspected on the side where the pin hole is formed floats from the table light transmitting plate. Thereafter, it is possible to easily remove the substrate to be inspected by putting a fingertip on a gap between the raised side edge portion and the light transmitting table. Further, since the substrate to be inspected is not removed in an unreasonable state, the problem of breakage due to twisting of the positioning pin is also solved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in more detail with reference to the drawings. FIG. 1 is a plan view illustrating the use of the positioning pin device according to the embodiment of the present invention, FIG. 2 is a perspective view of the positioning pin device according to the embodiment of the present invention, and FIG. 7 is an optical substrate for implementing the present invention. It is a perspective view of an inspection device. The optical board inspection apparatus 1 includes a light transmitting table 2, and a light source 9 (see FIG. 3) for irradiating light from below the light transmitting table 2 toward the light transmitting table 2 is provided inside. Then, a printed wiring board (hereinafter simply referred to as a substrate) 8 as a substrate to be inspected is positioned at a predetermined position on the light transmitting table 2 so that an inspection can be performed by light transmitted from the light transmitting table 2. ing.

The substrate 8 is provided with the positioning pin device 10 of the present invention.
It is positioned by. This positioning pin device 10
Are a pin 11, a pin support plate 12 integrally formed of an elastically deformable leaf spring material, and a pin support plate 12.
And a positioning block 20 to which is fixed. The optical inspection device 1 uses the positioning pin device 10 as a pair. That is, the positioning pin 11 is projected onto the light transmitting table 2 of the optical inspection apparatus 1, and a pair of pin holes formed in the substrate 8 is fitted into the positioning pin 11 to position the substrate 8 at a predetermined position. It is configured as follows. Reference numeral 5 in the drawing denotes a light-transmitting plate which constitutes the light-transmitting table 2, and substantially the entire surface thereof becomes a light-transmitting region except for the peripheral portion thereof overlapping with the non-light-transmitting base frame 3.
Is a contact block for fixing the light-transmitting plate 5 to the non-light-transmitting base frame 3.

As shown in FIGS. 1 and 3, the positioning block 20 is provided with fixing bolts 21 in a plurality of screw holes 4 provided at predetermined intervals in the non-light-transmitting base frame 3 at the periphery of the light-transmitting table 2. Is fixed at any position by screwing
The distance between the two positioning pins 11 of the pair of positioning pin devices 10 is adjustable. The pin support plate 12 is formed of a 0.3 mm-thick spring steel. As shown in FIGS. 1 and 2, a pin fixing portion 13 for erecting the positioning pin 11 and a pin fixing portion 13 near the positioning pin 11 are provided. , A connecting portion 16 for connecting the substrate pushing portion 15 to the base end 13 a of the pin fixing portion 13, and a pressing lever 17 connected to the substrate pushing portion 15 via the connecting portion 16. The pin fixing portion 13 and the substrate push-up portion 15 are separated by a cut 14. It is desirable that the pin support plate 12 be made as thin as possible within a range that does not impair the durability and the like.

The pin fixing part 13 has a base end 13a.
Are fixed to the positioning block 20 by fixing screws 22, and the light transmitting table 2 is
Is attached to the non-light-transmitting base frame 3 at the front edge of the frame. The distal end portion 13b of the pin fixing portion 13 extends on the light transmitting area of the light transmitting plate 5 of the light transmitting table 2, and the positioning pin 11 is erected on the distal end portion 13b by welding. Thus, the side edge portion 8a of the substrate 8 on the pin hole forming side positioned by the positioning pins 11 is located above the light transmitting area, and is illuminated by the light transmitted from the light transmitting area. Therefore, the inspection using the transmitted light can be performed on the side edge portion 8a on the pin hole forming side.

Incidentally, the pin holes for positioning the substrate are usually
It is formed at a corner of the substrate 8 having no wiring pattern or component insertion hole in the vicinity thereof. In the present invention, the portion of the substrate 8 that is very close to the pin hole and that overlaps the pin support plate 12 cannot be inspected by transmitted light, but the pin support plate 12 does not cover the component insertion hole near the pin hole. With the size, there is no practical problem.

The substrate push-up portion 15 has a tip portion 15b.
Extends near the positioning pin 11 and is located on the outer periphery of the pin fixing portion 13. The pressing lever 17 extends to the rear of the positioning block 20 and is formed so as to rise rearward at an inclination angle of about 30 ° starting from the connecting portion 16 as shown in FIG. By pressing down the pressing lever 17 with the pivot 16 as the swing fulcrum Q, the substrate push-up portion 15 pushes up the side edge portion 8a of the substrate 8 on the pin hole forming side. The pressing lever 17
Does not necessarily require an inclination angle, and may have a shape that can be pushed down.

When the substrate 8 is detached, as shown in FIG. 3, by pushing down the push lever 17, the substrate push-up portion 15 extending near the positioning pin 11 is moved.
The side edge portion 8a of the substrate 8 on the pin hole forming side is pushed up. As a result, the pin hole of the substrate 8 is released from the positioning pin 11, and the side edge portion 8 a on the pin hole forming side floats from the light transmitting plate 5. Thereafter, the fingertip is put on the gap between the light transmitting plate 5 and the side edge portion 8a, and the substrate 8 can be easily removed.
Thereby, since the substrate 8 is not removed in an unreasonable state, the problem of breakage due to twisting of the pins 11 is also solved.
In addition, the pin fixing portion 13, the board push-up portion 15, the connecting portion 16,
Since the pin support plate 12 partitioned by the pressing lever 17 is made of one leaf spring material, the manufacturing cost can be reduced.

FIG. 4 is a plan view showing a modification of the positioning pin device. In this embodiment, a pin fixing portion 13 is connected to a substrate push-up portion 15 and a push-down lever 17 located on the outer periphery thereof by a short connecting portion 16, and the other points are configured in the same manner as the embodiment of FIG. ing.

In the embodiment of the present invention, the structure for attaching the positioning pin device 10 to the translucent table 2 is as follows.
It is not limited to the above embodiment. For example, of the positioning pin devices used as a pair, the structure of the above embodiment is adopted for the positioning block 20 on the left side, and the positioning pin device 10 is mounted on the right positioning block 20 via the following structure. It can also be fixed. Here, FIG. 5 is a plan view of a main part showing another mounting structure of the positioning pin device 10, and FIG. 6 is a vertical sectional view taken along line VI-VI of FIG.

This mounting structure includes a positioning block 2
0, a guide rod 25 integrally extended in the horizontal direction on one end surface of the positioning block 20 and having a male screw 25a formed at the tip, and a stopper 28 screwed to the male screw 25a at the tip of the guide rod 25. A movable block 27 slidably provided on the guide rod 25 and fixed with the positioning pin device 10, and a coil spring 26 movably fitted on the guide rod 25 so as to freely press the movable block 27 toward the stopper 28. The movable block 27 is configured to bias the movable block 27 in a direction in which the pin interval between the right positioning pin 11 and the left positioning pin (not shown) increases. According to the above-mentioned mounting structure, flexibility is large when the pin holes formed in the substrate 8 have a margin with respect to the pin diameter, when the distance between the pair of pin holes varies, or the like. Positioning can be performed efficiently and accurately.

In the above embodiment, when a pair of positioning pin devices 10 are used in one optical substrate inspection apparatus 1, both the pin support plates 12 are shown in FIGS.
The pin fixing portion 13, the substrate push-up portion 15, and the connecting portion 1
6 and the pressing lever 17 have been described,
However, the present invention is not limited to this, and it is sufficient that at least one of the pin support plates of the positioning device has the above configuration. The material of the pin support plate 12 may be a plate-like and spring-like material such as phosphor bronze, stainless steel spring material, or a springy resin such as ABS. As long as the method of attaching to 12 is sufficient strength, a method such as caulking or bonding may be used. In addition, it is not necessary to say that the shape of the pin support plate, the mounting structure of the pin support plate, and the like can be appropriately changed and implemented.

[0021]

The present invention is constructed and operated as described above, and has the following effects. I. In a state where the substrate is positioned, the side edge portion of the substrate on which the pin hole is formed is illuminated by the light transmitting area of the light transmitting table. Becomes possible. B. When removing the board, the side edge portion of the board on which the pin hole is formed can be lifted from the light transmitting table simply by pressing down the push lever of the pin support plate, so that the board can be easily removed. . Further, since the substrate is not removed in an unreasonable state, the problem of breakage due to twisting of the positioning pin is also solved. C. Further, since the pin support plate is made of a single leaf spring material, the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a usage mode of a positioning pin device according to the present invention.

FIG. 2 is a perspective view of the positioning pin device according to the present invention.

FIG. 3 is an operation explanatory view of the positioning pin device according to the present invention.

FIG. 4 is a plan view of a positioning pin device according to another embodiment of the present invention.

FIG. 5 is a plan view of a main part showing another mounting structure of the positioning pin device.

FIG. 6 is a vertical sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is a perspective view of an optical substrate inspection device that requires a positioning pin device.

FIG. 8 is a plan view showing a usage state of a positioning pin device according to a conventional example.

FIG. 9 is a plan view showing a use mode of the positioning pin device according to the improvement plan.

[Explanation of symbols]

Reference numeral 2 denotes a light-transmitting table for mounting a substrate; 3 denotes a non-light-transmitting base frame; 5 denotes a light-transmitting plate; 8 denotes a substrate; 11 denotes a positioning pin; , 16
... Connection part, 17 ... Pressing lever, Q: Swing fulcrum.

Claims (1)

(57) [Scope of request for utility model registration] 1. A positioning pin for positioning a substrate to be inspected by projecting a positioning pin onto a light transmitting table for mounting a substrate of an optical substrate inspection apparatus and fitting a pin hole of the substrate to be inspected into the positioning pin. The apparatus comprises: a positioning pin; and a pin support plate formed of a resiliently deformable leaf spring material, wherein the pin support plate has a pin fixing portion for erecting the positioning pin,
A board push-up portion located on the outer periphery of the pin fixing portion in the vicinity of the positioning pin, a connecting portion connecting the board push-up portion to the base end of the pin fixing portion, and a pressing lever connected to the board push-up portion across the connecting portion; The pin fixing portion is attached to a non-light-transmitting base frame around the light-transmitting table at its base end,
The standing positioning pins extend into the light transmitting area so as to be located on the light transmitting area of the light transmitting table, and the connection portion is used as a swing fulcrum to push down the push lever to push up the board to be inspected by the board push-up portion. A positioning pin device characterized in that: