JP2000290797A - Jig for plating printed circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig for plating printed circuit board which is simple in structure, capable of surely fixing a printed circuit board, easy in attachment/ detachment of the printed circuit board, and inexpensive. SOLUTION: The jig for plating printed circuit board comprises a jig main body 30 comprising a holding member 10 and a width-determining adjustable member 20, a locking member 40 comprising a cover part to cover the holding member and a locking part of substantially U-shaped section forming a holding space between side walls opposite to each other of the jig member, and a holding member 50 or a clip which covers the locking member and is turnable around a pivot.

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 thin printed circuit board.

[0002]

2. Description of the Related Art Conventionally, when a printed circuit board is manufactured, holes are punched out by a press after etching the printed circuit board, and the holes are formed by plating such as gold plating and wiring. At this time, the plating process is performed by suspending the printed circuit board with a plating jig in a bath of a plating solution in which the plating solution circulates and immersing it 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 of them has been proposed as shown in FIG. 7, which was previously filed by the present applicant.

FIG. 8 is a perspective view showing a state in which a jig for plating a printed circuit board of the present invention applied by the present applicant is used, and is suspended by a transporting cathode bar 101 disposed above a plating bath. Locking members 106 are provided on left and right jig bodies 104 and 105 having the portions 102 and 103 at the upper ends.
The jig body 10 is operated by the clipping action of the elastic force.
4 and 105 and the printed circuit board 107 are fixed.
The jig bodies 104 and 105 are made of stainless steel or the like and have conductivity, and the locking portions 102 and
Electricity is supplied to the printed circuit board 107 by making conductive contact with the transporting cathode rod 101 at 103, or the transported cathode rod 101 is transferred to the printed circuit board 107 by separate conductive members provided on the jig bodies 104 and 105. Electricity is being supplied to it.

A part of a crank-shaped rod 117 bent in a zigzag shape as shown in FIG. 8 is fitted into the rod fitting portion 114 of the locking member 106. Rod 1
17 has a first bent portion 120 and a second bent portion 121 connecting the first bent portion at the same interval as the interval at which the locking member 106 is fixed, and an inclined connecting portion having an inclined surface therebetween. The operation unit 1 is bent at a substantially right angle to the axial direction of the rod 117 in the middle part thereof.
23. A plurality of first bent portions 120 and second bent portions 121 are provided corresponding to the number of locking members 106.

When the printed circuit board 107 is held between the locking member 106 and the jig bodies 104 and 105 by the rotation of the rod 117, as shown in FIG. Thus, the printed circuit board 107 is sandwiched between the jig main body 104 and the locking portion at the tip. Further, when the rod 117 is rotated by 180 degrees by the operation part 123, the second bent part 121 of the rod 117 is pressed against the jig main body 4 and the first bent part 120 moves upward. The printed circuit board 107 is pivoted upward and largely separated from the surface of the printed circuit board 107, so that the printed circuit board 107 is free and can be pulled out of the jig main body 104.

[0006] 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 this plating jig, the locking member 106 is connected to the rod 1 as described above.
Since the printed board 107 is held by the rotation of 17, the holding is not reliable, and there is a play portion in a part. Therefore, if the printed board is hung from the plating bath using this plating jig, Due to the flow resistance of the plating solution circulating in the plating bath, the printed circuit board rattles in the opening of the vertical bar, not only cannot perform plating uniformly, but also falls out of the opening and falls into the plating bath. There is also danger.

Further, as a countermeasure, as shown in FIG. 9, a fixed plate 158 is welded to a flat bar 157 at predetermined intervals.
The studs 160 are welded to the fixing plate 158 to be projected and fixed, and when the printed circuit board 164 is fixed,
The side edge of the printed circuit board 164 contacts the fixing plate 158 to perform positioning, and the hole 162 of the substantially U-shaped holding member 161 is formed.
The printed board 164 is fastened and fixed at the holding end of the holding member 161 by the thumb screw 163.

[0008]

The structure shown in FIG. 9 can be manufactured at a lower cost than the conventional one, and has no play between the vertical bar 157 and the printed circuit board 164, so that it can be securely fixed. Although the printed circuit board does not rattle due to the circulation path of the plating solution, when the printed circuit board is fixed, the holding members 161 provided at predetermined intervals with respect to the vertical bar 157 are fixed one by one with a thumb screw. 16
3 had to be screwed and fixed by hand, and a similar operation was required when removing the printed circuit board after the plating process, and there was a disadvantage that the operation required a lot of trouble and time.

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

[0010]

SUMMARY OF THE INVENTION In order to improve the above-mentioned drawbacks, the present invention provides a jig body comprising a holding member and a width-adjusting member, a covering portion for covering the jig body, and the jig member. A locking member comprising a locking portion having a substantially U-shaped cross section in which a holding space is formed between opposing side walls of the holding member, and a holding member which covers the locking member and is provided rotatably around a pivot. A jig for plating a printed circuit board is constituted by a clip.

According to the present invention, as described above, when plating the printed circuit board, the locking member is fixed to the jig body, and the printed circuit board is provided between the jig body and the inner surface of the side wall of the locking member. Is fitted. At this time, the holding member is covered and the holding member rotatably provided around the pivot is rotated, and the holding member completely covers the holding member. It is clamped by the elastic force of the wall. The printed circuit board thus held is not moved even by the plating solution circulating in the plating bath because it is held by the elastic force of both side walls of the locking member.

[0012]

Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, locking portions 2, 2 provided at the upper end with locking portions 2, 2 suspended from a transporting cathode bar 1 disposed above a plating bath, are provided with locking portions 2, 3. 2 are provided with elastic springs 4, 4, and
Is locked and held. The locking members 3, 3 have a pair of holding members 10, 10 at their lower ends via bolts 5, 5, 6, 6, respectively.
Has been fixed. The holding members 10, 10 are flat, elongated members made of steel.

A width adjusting member 20 is provided between the upper ends of the holding members 10 and 10. Width adjustment member 20
Are composed of slidable horizontal members 21 and 22 for adjusting the distance between the jig bodies 10 and 10 through the thumb screws 23,
A pair of holding members 1 via the bolts 5, 5, 6, 6
It is fixed together with 0 and 10. The holding member 1
It is preferable to provide a width-adjusting member between the lower ends of 0 and 10 in the same manner as the upper width-adjusting member 20. A jig main body 30 is formed by the holding members 10, the upper width determining member 20, and the lower width determining member. 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 FIGS. 1, 3 (a) and 3 (b),
The holding member 10 has a substantially U-shaped cross section in which a holding space is continuously formed between a plurality of divided covering portions 41 having a predetermined interval and enclosing the holding member 10 and opposing side walls 11 of the holding member 10. A locking member 40 including a portion 42 is provided, and is closely attached to and fixed to the holding member 10. As shown in FIGS. 2 and 3, a holding member 50 is rotatably provided around a pivot 51 so as to cover the locking member 40. Nipping member 5
Reference numeral 0 denotes a substantially U-shaped cross section of the covering portion 55 and the locking member 40, which are formed by the first side wall 52, the second side wall 53, and the vertical wall 54 connecting the both side walls. And a covering vertical section 562 connected to the first side wall 52 and a second vertical wall 562 connected to the second side wall 53. , The first vertical wall 561
The first side grip 565 and the fourth side wall 564 are connected to the third side wall 563, the fourth side wall 564 connected to the second vertical wall 562, and the third side wall 563, and extend outward from the opposite side of the pivot 51. , And is formed from a second rotating grip 566 extending outward from the opposite side of the pivot 51. In addition, as shown in FIG. 1, the pivot 51 of the holding member 50 may be provided at the upper end instead of being provided at the lower left and right ends. Also, the pivot 5 of the holding member 50 provided above the same holding member 10
1 is a pivot 5 of a holding member 50 provided at an upper end portion.
Reference numeral 1 may be provided at the lower end, and the holding member 50 provided above may hold the upper edge of the printed board 14, and the holding member 50 provided below may hold the lower edge of the printed board 14. .

When using the jig for plating a printed circuit board having the above-described configuration, the first and second rotating grips 565 and 565 of the holding member 50 are used in each of the two jig bodies 4 and 5. When the holding member 50 is disengaged from the holding member 10 by rotating around the pivot 51 with 566, the locking portion 42 having a substantially U-shaped cross section is separated from the holding member 10, and the locking portion 42 and the holding member 10 There is a gap between them. Therefore,
The side edge of the printed circuit board 7 to be plated with the locking member 40 is inserted into the opened gap. When all the locking members 40 are in this state, the first rotating grip 565 of the holding member 50
Alternatively, when the second rotating grip portion 566 is rotated around the pivot 51 to cover the locking member 40, the holding member 50 presses the locking member 40, and the locking member 40 is resiliently pressed by the printed circuit board. 7 is sandwiched between the holding member 10. The printed circuit board 7 fixed to the jig bodies 4 and 5 in this manner is set so that the locking portions 2 and 3 at the upper ends of the jig bodies 4 and 5 are hung on the transporting cathode rod 1 and the printed circuit board 7 is placed in a plating bath. The plating process is performed by sinking. At the end of the plating process, the locking portions 2 and 3 are removed from the transporting cathode bar 1, the printed circuit board 7 is taken out of the bath, and the first rotating grip portion 565 of the holding member 50.
Alternatively, the second rotating grip 566 is rotated around the pivot 51 to release the holding member 50 from the locking member 40 and remove the printed circuit board 7 from the holding member 10.

In the above embodiment, the printed circuit board 14 is attached and detached by the holding member 50 which covers the locking member 40 and is rotatably provided around the pivot 51. 4 to 6, a clip 60 for locking the printed circuit board 14 to the holding member 10 may be used as a holding member. The clip 60 includes a distal end insertion portion 610 that covers and holds the holding member 10 and the locking member 4.
Elastic bent portion 611 that engages with the 0-shaped U-shaped engaging portion 42
And a curved R pressing portion 612 for supporting the rear wall 421 of the U-shaped locking portion 42 in a pressing force and a grip portion 613. In addition, a protrusion 614 for preventing a loss may be provided in a boundary region between the elastic bending portion 611 and the elastic portion 612.

In order to mount the printed board 14 between the holding member 10 and the locking member 40, the edge of the printed board 14 is cut by the cross section of the holding member 10 and the locking member 40 while holding the grip portion 613 by hand. After loosely fitting between the U-shaped locking portion 42 and the rear wall 42, the insertion portion 610 is attached to the covering portion 41 of the locking member 40.
, The distal end portion 311 a is strongly engaged with the rear wall 421 of the U-shaped cross section of the locking member 40 by the elastic force of the curved R pressing portion 612. And the elastic bending portion 611
Is stably engaged with the U-shaped cross section 42 of the locking member 40. Therefore, the holding member 10 and the rear wall 42 of the locking portion 42 of the locking member 40 are in close contact with each other. In the case where the projections 614 for preventing loss are provided, the protrusions 614 are not easily lost from the locking member 40.

In order to release the printed circuit board 14 from the space between the holding member 10 and the locking member 40, the gripping portion 613 is lifted up by hand, and the curved elastic portion 61 is bent.
The locking portion 42 of the locking member 40 has a U-shaped cross section due to the resilient force of 2.
The repressing portion 612 comes off the rear wall 42, and then the insertion portion 610
Is detached from the covering portion 41 of the locking member 40. Rear wall 4 of retaining portion 42 and retaining portion 42 of retaining member 40
21 is formed, and the edge of the printed circuit board 14 is separated. The clip 60 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 610 is not coated with a synthetic resin in order to improve the electrical conductivity.

Alternatively, a plurality of printed boards may be vertically mounted on the jig body 30, and the printed boards may be sandwiched by clamp members 70 as shown in FIG. 7 to improve the conductivity. That is, the plate-like body is cut and raised to form a center holding portion 71 and left and right holding portions 72 and 73. Each holding part may be formed into a pair of holding pieces, and each holding piece may be curved so that the center of the printed circuit board is formed at the center.

[0020]

Since the present invention is constructed as described above, the printed circuit board is held by the elastic force of both side walls of the locking member, and the printed circuit board held in such a manner is circulated in the plating bath. Is firmly fixed to the jig body, so it does not move. Therefore, although the jig for plating a printed circuit board is simple and inexpensive, all the locking members can be integrally opened or sandwiched by operating the rod with respect to the locking member, and the printed circuit board can be attached and detached. It becomes very easy.

[Brief description of the drawings]

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

2A and 2B show the jig body of the embodiment, wherein FIG. 2A is a front view and FIG. 2B is a side view.

FIG. 3A is a cross-sectional view of the holding member, the locking member, and the holding member of the embodiment in a sandwiched state, and FIG. 3B is a cross-sectional view of the same detached state.

FIG. 4 is a front view of a jig body according to another embodiment of the present invention.

FIG. 5 is a partial perspective view of the embodiment.

FIG. 6 is a sectional view of the clip of the embodiment.

FIG. 7 is a perspective view of the clamp member of the embodiment.

FIG. 8 is a perspective view showing a conventional printed circuit board plating apparatus.

FIG. 9 is a front view showing another conventional locking member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying cathode bar 2 Locking part 3 Locking member 10 Holding member 14 Printed circuit board 20 Width adjustment member 30 Jig main body 40 Locking member 41 Covering part 42 Locking part 50 Nipping member 55 Enclosure part 56 Coating holding part 60 clip 70 clamp member

Claims (8)

[Claims] 1. A jig body including a holding member and a width-adjusting member, and a substantially U-shaped cross section in which a holding space is formed between a covering portion that covers the holding member and an opposing side wall of the jig member. A jig for plating a printed circuit board, comprising: a locking member comprising: a locking portion; and a holding member which covers the locking member and is provided rotatably around a pivot. 2. The jig for plating a printed circuit board according to claim 1, wherein a plurality of locking members are provided on the jig body. 3. The printed circuit board plating jig according to claim 1, wherein a plurality of holding members are provided on the jig body. 4. The jig for plating a printed circuit board according to claim 1, wherein the holding member is provided with a grip for rotation. 5. The holding member includes a covering portion for covering the locking member and a covering holding portion for covering and holding the substantially U-shaped locking portion of the locking member. Claim 4
The jig for plating a printed circuit board according to any one of the above. 6. The holding member includes a distal end insertion portion that locks on a covering portion of a locking member that covers the holding member, and an elastic bent portion that engages with a U-shaped cross-section locking portion of the locking member. The printed circuit board plating jig according to any one of claims 1 to 5, comprising a grip portion and a curved elastic portion for elastically supporting the rear wall of the character-shaped engaging portion. 7. The jig for plating a printed circuit board according to claim 6, wherein the holding member is provided with a protrusion for preventing loss in a boundary region between the elastic bending portion and the elastic pressure portion. 8. A jig for plating a printed circuit board according to claim 1, further comprising a clamp member for clamping the printed circuit boards.