JPH0368189A - Printed wiring board electroplating jig - Google Patents

Abstract

PURPOSE:To enable a printed wiring board to be easily mounted independently of its thickness by a method wherein a bent contact member is provided so as to elastically press both ends of the board against a pair of conductive guides which are opposed to each other and U-shaped in cross section so as to insert the board between them. CONSTITUTION:A guide 5, which is formed of conductive material and U-shaped in cross section, is provided with a spring contact member 9 which is formed by lifting up a part of a side plate 7 by cutting and bent toward another side plate 6 into a hook. The member 9 extends so far as to make its end 11 protrude outward from a hole 10 of the side plate 6 before a board 4 is set. In this constitution, the board 4 is inserted between the guides 5 on both sides in the direction of an arrow B from a feed hook 2 and fixed by pressing it against the side plate 6 by the member 9. In succession, when the electroplating jig mounted with the board 4 is dipped into a plating tank as kept in this state and a current is fed, a current is made to flow through the board 4 via the hook 2, the side plate 6, and the member 9, as a result the copper foil pattern section of the board 4 is electroplated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electroplating jig for fixing and applying electricity to a printed wiring board during electroplating of the printed wiring board.

[Conventional technology]

For printed wiring boards, after laminating and pressure forming the inner and outer layers in the case of a multi-layer board, or after attaching copper foil to the base material in the case of a single-layer board, the outer layer is removed by photo-etching. It is manufactured by peeling off the copper foil other than the pattern, electroplating solder, etc. on the remaining copper foil pattern, and then applying a protective agent.

When electroplating a board, use it as an electroplating jig.
Conventionally, a jig as shown in FIG. 5 has been used. Fifth
The figure is a perspective view showing a state in which the substrate is attached to the jig. In the figure, (1) is a current-carrying rod, which is made of a copper strip or the like. (2) is a current-carrying hook that is fixed to the upper end of the current-carrying rod (1) and is hooked onto an electrode bar (not shown) that is energized during electroplating to energize the current-carrying rod (1).

(3) is a contact member attached to the current-carrying rod (1) in accordance with the position of the pattern on the printed wiring board (4), which has spring properties, is in contact with the pattern on the board (4), and is It has a structure that allows it to be grasped and held from both sides. Arrow A indicates the direction of attachment of the substrate (4) to the contact member (3).

The conventional jig is constructed as described above. When using the jig, first open the contact member (3), tap the board (4) in the direction of arrow A to fix it, and then attach the energizing hook (2) to the electrode. Hang it on a bar (not shown); in this case, a symmetrical one
The substrate (4) is held by a set of jigs. Then, when the electrode bar (not shown) is energized, the energizing hook (2
), the circuit board (4) via the current-carrying rod (1), and the contact member (3).
), and the copper foil pattern is electroplated with solder or the like.

[Problem to be solved by the invention]

However, since the conventional jig has a structure in which the board (4) is pushed horizontally into the contact member (3) in the direction of arrow A in Fig. 5 and held from both sides, it is difficult to attach the board (4),
It requires a lot of effort to remove, and it is very difficult to mount the board in a well-balanced manner on both the right and left jigs.Furthermore, the thickness of the board (4) to be mounted is limited, and the wall thickness is approximately 0.5 mm. There was a problem that it could not be used with thin substrates because the substrate would be damaged by horizontal pounding.

This invention was made to solve the above-mentioned problems. By simply placing the left and right jigs side by side and inserting the board from the energizing hook side, it is easy to install and remove. To provide an electroplating jig for a printed wiring board that can be used without damaging even thin boards.

[Means to solve the problem]

The electroplating jig for printed wiring boards of the present invention includes a pair of guide members made of a conductive material and having a U-shaped cross section and disposed facing each other so as to insert the printed wiring board inside, and an upper part of each guide member. an energizing hook that is fixed to the electrode bar and hung on the electrode bar, and a bent shape so as to elastically press both ends of the printed wiring board from at least one side of the mutually opposing side plates of each of the guide members to the other side. It includes an extending contact member and a hole provided in the other side plate into which the end of the contact member is inserted.

[For production]

In order to electroplate printed wiring boards using the jig according to the present invention, first, a pair of left and right jigs are arranged at a predetermined interval, and a patterned board is inserted inside the jig along a guide member. Insert and secure.

At this time, since the end of the contact member can be inserted into the hole provided in the side plate on the opposite side, the movement stroke of the end becomes large and appropriate strength can be obtained depending on the thickness of the board. Therefore, the board can be easily attached by simply inserting the board, and even a thin board can be easily fixed without being damaged, and the board can be held with appropriate strength. Also, the board can be mounted on the left and right jigs in a well-balanced manner.

Electroplating is then performed by hooking the energizing hook of the jig holding the substrate onto the electrode bar and energizing it in the plating solution. After the plating process is completed, the substrate can be easily removed by simply pushing it out in the same way as when fixing it.

[Embodiments of the invention]

FIG. 1(a) is a perspective view showing a state in which a board is attached using the jig of the first embodiment using left and right elbows, and FIG. 1(b) is a 1-1 cross-sectional view before the board is attached. (2) and (4) show the same or equivalent parts as in FIG. 5.

(5) is a guide member made of a conductive material and having a U-shaped cross section, two side plates (6), (7) facing each other, and a back plate (8) connecting both side plates (6), (7) to each other. )
It consists of The energizing hook (2) is fixed to the upper end of the side plate (6). (9) is a contact member made by cutting and raising a part of one side plate (7) and bending it into a hook shape toward the other side plate (6), and has spring properties.

(10) is a hole provided in the side plate (6) into which the end (11) of the contact member (9) is inserted. As shown in FIG. 1(b), the contact member (9) is attached to the substrate (
4), the end (11) extends outward from the hole (lO) of the side plate (6), so that it can be attached to both thin and thick boards with one jig. It has been devised.

The jig according to the first embodiment is constructed as described above, and after arranging a pair of left and right jigs at a constant interval, the board (4) is placed on both sides in the direction of arrow B from the energizing hook (2) side. Insert between the guide members (5) and connect the side plate (6) with the contact member (9).
Press to fix the substrate (4) to both jigs at the same time.

Next, the integrated left and right jigs and the board (4) are hung on an electrode bar (not shown), immersed in a plating bath, and energized. Electricity is applied to the board (4) via the contact member (9), and the board (4)
The copper foil pattern is electroplated. After electroplating is completed, the substrate (4) can be easily removed from the jig by simply removing the energizing hook (2) and pushing in the direction of arrow B in FIG.

FIG. 2(a) is a sectional view of the jig according to the second embodiment, and FIG. 2(b)
) is a view in the C direction, and (e) is a cross-sectional view of a part of the guide member before mounting the board.
is made of a conductive and springy material fixed at regular intervals to the side plate (7), and is bent at least twice in opposite directions to form a substantially Z-shape, with the end (11) attached to the side plate. (6) so as to be inserted into the hole (10) provided in the hole (10). In this embodiment as well, the contact member (9) has a large stroke as in the first embodiment, and serves as a jig that allows the substrate (4) to be easily attached and detached from the direction of arrow C.

FIG. 3(a) is a sectional view of the jig according to the third embodiment, and FIG. 3(b)
) is a view taken in the direction of arrow D, and (c) is a sectional view of a part of the guide member before mounting the board.
As in the first embodiment, a part of the side plate (7) is cut and bent toward the side plate (6) into a key shape, and the board (4
) is provided with a hemispherical or semi-spheroidal protrusion (12) at the end (11) that contacts with the tip. In this embodiment as well, the end portion (11) extends so as to be inserted into the hole (10) of the side plate (6) and has a large stroke, so that it can be used in one treatment from thin to thick substrates. It is designed so that it can be installed with tools. In addition, since the protrusion (12) is provided on the end (11), contact with the board (4) is ensured, and the board (4) can be easily attached and detached from the direction of the arrow or from the opposite direction. be.

FIG. 4(a) is a sectional view showing a jig according to the fourth embodiment,
(b) is a view taken in the direction of arrow E, and (c) is a cross-sectional view of a part of the guide member before the board is attached.
9) is a part of the side plate (7) cut and bent toward the side plate (6) in the shape of a hook, as in the first embodiment, and has an end portion (11) in contact with the substrate (4). ) has a tip (13) bent toward the side plate (7). Further, (14) is a protrusion that is formed by raising at least a portion of the side plate (6) into a chevron shape.

In this embodiment, the contact between the substrate (4) and the contact member (9) is ensured, and the substrate (4) can be easily attached and detached in the direction of arrow E.

〔Effect of the invention〕

As explained above, the electroplating jig for printed wiring boards according to the present invention includes a pair of guide members made of a conductive material and having a U-shaped cross section, a current-carrying hook provided on the upper part of each guide member, and each guide member. A contact member extending in a curved shape so as to elastically press both ends of the printed wiring board from at least one side of the side plates facing each other to the other side, and a side plate formed on the side plate corresponding to the ends of the contact member. Because of the holes provided, even thin substrates can be easily and well-balanced without being damaged, regardless of the thickness of the substrate, and the substrate can be easily removed after electroplating. be.

[Brief explanation of drawings]

FIG. 1(a) is a perspective view showing a state where a board is attached to an electroplating jig for a printed wiring board according to the first embodiment of the present invention, and FIG. 1(b) is a sectional view taken along line I-1 before the board is attached. Figure 2,
3 and 4 (a) are cross-sectional views showing the jigs of the second, third, and fourth embodiments, respectively, and (b) are C, D, and jigs, respectively.
FIG. 5 is a perspective view of a conventional jig, and FIG. In each figure, the same reference numerals indicate the same or corresponding parts. (2) is the energizing hook, (4) is the printed wiring board, (5)
(6) and (7) are the side plates, (9) is the contact member, (10) is the hole, and (11) is the end.

Claims (1)

[Claims] (1) A pair of guide members made of conductive material and having a U-shaped cross section and placed facing each other so that a printed wiring board can be inserted inside, and a current-carrying member fixed to the top of each guide member and hung on an electrode bar. a hook, a contact member extending in a bent shape so as to elastically press both ends of the printed wiring board from at least one side of the opposing side plates of each of the guide members to the other side, and an end of the contact member. 1. A jig for electroplating a printed wiring board, comprising: a hole provided in the other side plate into which a part is inserted.