JPH11335897A - Printed circuit board plating jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printed circuit board plating jig which is capable of surely fixing a printed circuit board with a simple structure, easily attaches and detaches the printed circuit board and is inexpensive. SOLUTION: This printed circuit board plating jig consist of a pair of opposite holding members 12, 13 which are provided with guide grooves 15, 16 for freely fitting the end edges of the printed circuit board 14, a jig body 30 which consists of width determining adjustment members 20, 21 for freely adjustably fixing the spacing between these holding members 12 and 13, and clips 31 which detain the printed circuit board 14 to the holding members 12, 13. This jig body 30 curves outward and backward to constitute the printed circuit board plating jig.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for plating a printed circuit board for holding a printed circuit board in a bath of a plating solution when performing a plating process such as gold plating on a printed circuit board in an electronic device.

[0002]

2. Description of the Related Art Conventionally, when manufacturing a printed circuit board, holes are punched by a press after etching the printed circuit board, and the holes are formed by plating such as gold or copper plating and wiring. In the plating process at this time, the printed board is suspended by a plating jig in a bath of a plating solution in which the plating solution circulates and immersed at a predetermined temperature for a predetermined time. Various types of plating jigs for suspending the printed circuit board have been proposed in the past, and one such as shown in FIG. 7 has been proposed.

This jig is fitted to left and right vertical bars 42, 43 having upper ends secured with locking portions 40, 41 suspended from a transporting cathode bar 39 disposed above a plating bath, on surfaces opposed to each other. Mating grooves 44 and 45 are formed, and a frame is constituted by an upper horizontal bar 46 connecting the locking members 40 and 41 and a lower horizontal bar 47 connecting the lower portions of the vertical bars 42 and 43. Printed circuit boards 48 cut into a predetermined shape in grooves 44 and 45 are connected and fitted to each other by conductive bracket 50, and conductive connecting tool 51 is disposed between locking members 40 and 41. The upper end portion of the printed circuit board 51 is brought into conductive contact with the transporting cathode bar 39, and the lower end portion of the printed circuit board 48 is held by a conductive holding member 52.

[0004] Although the plating jig as described above is excellent in terms of uniformity of conductivity, its structure is complicated and has to be expensive. In order to avoid using such a complicated plating jig, it has been proposed to use a vertical bar 53 as shown in FIGS. 8 and 9 instead of the left and right vertical bars 42 and 43. The vertical bar 53 has a V-shaped opening 5 for fitting a printed circuit board on the front surface.
4, a vertical wall portion 55 is provided on the back side, and a screw hole 56 for fixing the locking member is formed on the upper portion. This vertical bar 4
Reference numeral 2 also supports the printed board by being suspended by the transporting cathode bar similarly to the above-described conventional one, sandwiching the printed board between the openings 54 of the vertical bars facing each other.

[0005] In this plating jig, a metal plate can be manufactured by sheet metal processing, and can be less expensive than that shown in FIG. However, in this plating jig, the printed board is supported only by sandwiching the printed board between the opposed openings of the two vertical rods, so that the sandwiching is not reliable, and there is some play. Because the printed circuit board is suspended in the plating bath by using this plating jig, the printed circuit board is circulated and circulated in the plating bath, and the flow resistance of the plating solution causes the printed circuit board to fall within the opening of the vertical bar. Not only is it not possible to perform plating uniformly, but also there is a risk of falling out of the opening and falling into the plating bath.

As a countermeasure, a fixing plate 58 is welded at predetermined intervals to a flat bar 57 as shown in FIG. 10, and a stud 60 is welded to the fixing plate 58 to protrude and fix the same. When the board 48 is fixed, the side edge of the printed board 64 is brought into contact with the fixing plate 58 to perform positioning, the studs 60 are inserted into the holes 62 of the substantially U-shaped holding member 61, and the holding member is The printed circuit board 64 is fixed by tightening the printed circuit board 64 at the sandwiching end 63 of 61.

[0007]

The structure shown in FIG. 10 can be manufactured at a lower cost than the conventional structure shown in FIG.
There is no play between the vertical bar and the printed circuit board as shown in the above, and it is possible to securely fix it, so that the printed circuit board does not rattle due to the circulation of the plating solution, but when fixing the printed circuit board In order to fix the holding members provided at predetermined intervals to the vertical bar, the thumb screws must be screwed by hand one by one, and the same work must be performed when removing the printed circuit board after plating. Required and requires a lot of trouble and time.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an inexpensive printed circuit board plating jig which has a simple structure, can securely fix the printed circuit board, can easily attach and detach the printed circuit board, and is inexpensive.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned drawbacks, the present invention provides a pair of opposing holding members provided with guide grooves for loosely fitting the edges of a printed circuit board, and a space between the holding members. In a jig for plating a printed circuit board, comprising a jig main body including a width determining adjusting member fixedly adjustable and a clip for locking the printed board to the holding member, the jig main body is bent outward and backward. This constitutes a jig for plating a printed circuit board.

Since the present invention is configured as described above, when plating the printed circuit board, the clip is fixed to the jig body and the printed circuit board is locked between the jig body and the clip. At this time, the printed circuit board is clamped by the elastic force of the clip. The printed circuit board held in this manner does not move because it is firmly fixed to the vertical bar even by the plating solution circulating in the plating bath. When removing the printed circuit board from the jig body, remove the clip from the jig body, and since the jig body is bent outward and backward, simply remove the printed circuit board by sliding it upward. Can be.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a state in which a jig for plating a printed circuit board of the present invention is used, FIG. 2A is a front view of a locking member and a holding member, FIG. (A) is a front view of the upper width determining adjusting member, FIG. 3 (B) is a rear view thereof, FIG. 4 (A) is a front view of the lower width determining adjusting member, and FIG. 4 (B) is a rear view thereof. The left and right locking members 4 and 5 provided at the upper ends with locking portions 2 and 3 suspended from the transporting cathode bar 1 disposed above the plating bath have elastic springs 6 and 7 on the locking portions 2 and 3.
Are provided, and the locking portions 2 and 3 are locked and held by the transporting cathode rod 1. The locking members 4, 5 have bolts 8,
A pair of holding members 12, 13 are fixed via 9, 10, 11 respectively. The holding members 12 and 13 are provided with guide grooves 15 and 16 in the longitudinal direction for loosely fitting the edge portions of the printed board 14 inside, and both ends thereof are narrowed to fix the printed board 14. Vertical wall portions 17 and 18 are provided on the back side of the holding members 12 and 13. Holding member 1
A bent portion 19 that is bent outward and rearward in a front view is formed at a connecting portion between the locking members 2 and 13 and the locking members 4 and 5.

A bent portion 19 is provided between the holding members 12 and 13.
Is provided with an upper width determining adjustment member 20. The upper width determining adjusting member 20 is composed of horizontal members slidable with each other so as to adjust the distance between the holding members 12 and 13.
01 has one end fixed to the locking member 4 with a bolt 10 and the other end provided with a screw 23. The other horizontal member 2
02 is provided with a groove 24 in which a screw 23 is fitted, and
1 and 202 are slid together and the holding member 1 is
A predetermined interval is provided between the wires 2 and 13 so as to be fixed. The lower width determining adjusting member 21 is provided at the lower ends of the holding members 12 and 13, and like the upper width determining adjusting member 20,
One lateral member 203 has one end fixed to the holding member 12 with a bolt 24 and the other end provided with a screw 25.
The other horizontal member 204 is provided with a groove 26 in which a screw 25 is fitted, and the horizontal members 203 and 204 are slid with each other to fix the holding members 12 and 13 at a predetermined interval by the screw 23. I have. A jig main body 30 is formed by the holding members 12 and 13, the upper width determining adjusting member 20, and the lower width determining adjusting member 21. The jig body 30 is made of stainless steel or the like and has conductivity. The jig body 30 is electrically connected to the transporting cathode rod 1 by the locking portions 2 and 3 at the upper end thereof, and electricity is supplied to the printed circuit board. A separate conductive member provided on the jig body 30 allows electricity to flow from the transporting cathode bar 1 to the printed circuit board 14.

As shown in FIG. 5, a clip 31 for locking the printed circuit board 14 to the holding members 12 and 13 holds the printed circuit board 14 by holding the guide grooves 15 and 16 of the holding members 12 and 13. Tip insertion portion 311 and elastic bending portion 312
And a holding portion 313 for holding the holding members 12 and 13, and a grip portion 314. The tip insertion portion 311 forms a spiral tip in a bifurcated shape, and after loosely fitting the edge of the printed circuit board 14 into the guide groove 15, inserts the spiral tip into the guide groove 1.
5 is a portion for engaging the printed circuit board 14 with the holding member 12 by engaging with the holding member 5. The elastic bending portion 312 is provided for the holding member 12.
This is elastically engaged with the vertical wall portion 17 provided on the back side of
This assists in stably engaging the printed board 14 with the holding member 12. The locking portion 313 is provided for the holding member 12.
The clip 31 is further wound around the vertical wall portion 17 on the back side of the support member 12 to further stably engage the clip 31 with the holding member 12, and together with the elastic bending portion 312,
When the clip 31 is detached from the connector, the clip 31 is easily resilient and bent. The grip portion 314 is a portion that grips the printed circuit board 14 with a finger to engage and disengage with the holding member 12.
The clip 31 has a surface coated with a synthetic resin so that the printed circuit board can be held in a bath of a plating solution so that the plating time can be kept long. Note that the distal end insertion portion 311 is not coated with a synthetic resin in order to improve electrical conductivity.

When using the jig for plating a printed circuit board having the above structure, the connecting portions of the pair of holding members 12, 13 with the locking members 4, 5 are bent outward and rearward in the jig body 30. The plurality of printed circuit boards 14
Can be sequentially loosely fitted into the guide grooves 15 and 16 so as to be dropped from above. Next, the grip portion 314 of the clip 31 is gripped with a finger, and the tip insertion portion 3 of the clip 31 is inserted.
11 is engaged with the guide groove 15 to lock the printed circuit board 14 to the holding member 12, and the elastic bent portion 312 is elastically engaged with the vertical wall portion 17 provided on the back side of the holding member 12 to lock Part 3
The clip 31 is stably engaged with the holding member 12 by winding the member 13 around the vertical wall portion 17 on the back side of the holding member 12, and the printed board 14 is held by the clip 31 on the holding member 1.
2 is stably engaged. When the clip 31 is engaged with the plurality of printed boards 14 as shown in FIG. 1, the clip 31 sandwiches the printed board 14 between the pair of holding members 12 and 13 by the elastic force as described above. The printed circuit board 7 fixed to the jig main body 30 is plated by hanging the locking portions 2 and 3 at the upper end of the jig main body 30 on the transporting cathode rod 1 and sinking the printed board 14 into a plating bath. Perform processing. At the end of the plating process, the locking portions 2 and 3 are removed from the transporting cathode bar 1, the printed board 14 is pulled out of the bath, the grip portion 314 of the clip 31 is gripped with a finger, and the grip portion 314 of the clip 31 is rotated. Then, the clip 31 is detached from the holding member 12 together with the elastic bending portion 312. Next, a pair of holding members 12 and 13
Of the plurality of printed circuit boards 14 are bent outward and rearward, so that the printed circuit boards 14 are easily pulled up by pulling up the edge portions of the plurality of printed circuit boards 14 into the guide grooves 15 and 16. It can be removed from the jig body 30.

In the above-described embodiment, as shown in FIG. 6, the clip 32 holds the first edge of the guide groove of the holding member and locks the printed board by the first holding piece 321 and the guide groove. The second holding piece 322 holding the other edge and the first holding piece 322
The first grip portion 323 connected to the holding piece 321 and the second grip portion 324 connected to the second holding piece 322 and the first holding piece 321
Spring piece 3 for pressing the second holding piece 322 against the second holding piece 322
25.

[0016]

Since the present invention is constructed as described above, it is possible to loosely fit successively just by dropping the edge portions of a plurality of printed circuit boards into the guide grooves from above. Further, the printed circuit board is held by the elastic force of the clip, and the printed circuit board held in this manner is not fixed because it is firmly fixed to the jig body even by the plating solution circulating in the plating bath.

Further, the clip can be easily detached from the holding member together with the elastic bending portion by rotating the clip holding portion by gripping the clip holding portion with a finger. afterwards,
The printed circuit boards can be easily removed from the jig body by pulling up the edge portions of the plurality of printed circuit boards upward from the guide grooves. Therefore, all the printed circuit boards can be opened or sandwiched integrally by the operation of the clip, and the mounting and dismounting of the printed circuit boards becomes extremely easy, even though the jig is a simple structure and an inexpensive printed circuit board plating jig.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of an embodiment of the present invention.

FIG. 2A is a front view of a locking member and a holding member, and FIG.
Is a side view, and (c) is a cross-sectional view.

3A is a front view of one horizontal member of the upper width determining adjustment member, and FIG. 3B is a front view of the other horizontal member.

4A is a front view of one horizontal member of the lower width determining adjustment member, and FIG. 4B is a front view of the other horizontal member.

5A is a perspective view of the clip, FIG. 5B is a front view thereof, and FIG. 5C is a side view thereof.

FIG. 6 is a perspective view of an embodiment of a clip.

FIG. 7 is a perspective view showing a conventional printed circuit board plating apparatus.

FIG. 8 is a front view showing another conventional locking member.

FIG. 9 is a sectional view of the same.

FIG. 10 is a sectional view showing still another conventional locking member.

[Explanation of symbols]

 4, 5 Locking member 12 Holding member 13 Holding member 14 Printed circuit board 15 Guide groove 19 Bending portion 20 Upper width determining adjusting member 21 Lower width determining adjusting member 30 Jig body 31 Clip 311 Tip insertion portion 312 Elastic bending portion 313 Lock Part 314 gripping part 32 clip 321 first gripping piece 322 second gripping piece 323 1 gripping part 323 324 second gripping part 325 pulling piece

Claims (6)

[Claims] 1. A jig comprising a pair of opposing holding members provided with guide grooves for loosely fitting the edges of a printed circuit board, and a width-determining width-determining adjusting member that adjustably fixes a gap between the holding members. A jig body for a printed circuit board, comprising a jig body and a clip for locking the printed board to the holding member, wherein the jig body is bent outward and backward. Utensils. 2. The printed circuit board plating jig according to claim 1, wherein said holding member comprises a locking member whose upper portion is locked by a transporting cathode bar, and wherein said locking member is fixed to said holding member. 3. The printed circuit board plating jig according to claim 1, wherein the connecting portion of the locking member of the jig body is bent outward and rearward. 4. The width-adjusting member is composed of horizontal members slidable relative to each other, one of the horizontal members is provided with a screw, and the other horizontal member is provided with a groove for fitting the screw. The jig for plating a printed circuit board according to claim 3. 5. The clip comprises a tip insertion portion for holding the guide groove of the holding member and locking the printed circuit board, an elastic bending portion, a locking portion for locking to the holding member, and a grip portion. The printed circuit board plating jig according to claim 1. 6. The jig for plating a printed circuit board according to claim 1, wherein the clip comprises a pair of holding pieces, a spring piece, and a gripping piece.