KR20100103017A - A fixing jig device for use in electroplating of printed circuit boards - Google Patents

Abstract

PURPOSE: A fixing jig device for electroplating a printed circuit board is provided to prevent a printed circuit board from becoming deformed when a fixing pin presses the printed circuit board. CONSTITUTION: A fixing jig device for electroplating a printed circuit board is composed of a jig frame(10), a rotating bar, extension members(30), rotating arms(40), hook units(50), jig devices(60), and a printed circuit board. Each extension member has a rotary contact pin(31) and a fixed contact pin(32). Support bars are integrally formed in both sides of the jig frame. Support members are inserted between the support bars and the rotating bar.

Description

A fixing jig device for use in electroplating of printed circuit boards}

The present invention is a jig device for plating a printed circuit board for immersing in a plating bath for plating the surface of a printed circuit board (PCB substrate), in order to minimize the force generated per one point of the printed circuit board By installing a plurality of auxiliary fixing pins on the rotation bar and the frame in addition to the ground pins supporting each other from the front and the rear, it is possible to prevent cracks or tears on the printed circuit board, and in particular, the rotation side auxiliary pins located on the rotation bar side. The tip of the wide part is positioned inside the tip of the wide part of the ground pin, and instead, the rubber tip protrudes to the same tip to allow auxiliary fixing by elasticity, and the rotating side auxiliary pin and the fixed side auxiliary pin are the same. When equipped with an outer diameter, even if only a slight twist occurs when facing each other, the pressure is applied to the tip of the rubber tip as shown in FIG. Because of this, the printed circuit board may be deformed, and the fixed side fixing pin located on the frame side wraps the rubber tip to the wide end of the wide part so that the tip of the rotating side fixing pin is fixed to the fixed side fixing pin. The outer diameter of the printed circuit board can be prevented from being deformed when the fixing pins on both sides press the printed circuit board, and the jig device is inserted into the immersion tank with the printed circuit board fixed. As the lower end of the printed circuit board is introduced into the liquid phase due to the thinness, vortices may occur and deformation may occur at the bottom of the printed circuit board. In the present invention, the connecting frame is formed in a rhombic shape, and protrudes toward both frame fronts. An imaginary line connecting the upper and lower edges of the rhombus and the line connecting the tip of the fixed side ground pin Within the immersion tank, when configured to base a print circuit board bath immersion input is formed vortex, thereby relates to a jig apparatus for a printed circuit board plating to minimize the deformation occurs to a printed circuit board.

Generally known printed circuit boards are classified into single-sided boards, double-sided boards, multilayer boards, etc. according to the number of printed circuit boards printed on the board. It is a situation that is used to be mounted on a variety of electronic products such as.

Such a printed circuit board uses a fixing jig for supporting and fixing the printed circuit board at the time of plating, in order to electroplate the surface with copper (Cu), nickel (Ni), and gold (Ag). The jig for a printed circuit board is composed of a frame and a rotation bar hinged to the frame. The jig for fixing the printed circuit board is fixed through the jig for the printed circuit board, and then dehydration, polishing, degreasing, dipping, Electroplating, post-treatment and drying are performed in this order.

At this time, in the immersion process, after mounting the printed circuit board on the jig is immersed in the plating bath containing the plating solution, such jig has the disadvantage that the power supply is extremely unstable because the power is connected only to the frame, When fixing a very thin printed circuit board or a thick printed circuit board, the rotating bar pressurizing the printed circuit board does not distribute uniform force, and when the printed circuit board is immersed in the plating bath, the printed circuit board swings left and right. There was a problem.

On the other hand, the present applicant improves the above disadvantages, by selectively varying the pressing force of the ground pin in accordance with the thickness of the printed circuit board so that the printed circuit board can be more stably fixed to the jig, the power supply is a rotatable arm and frame Simultaneous energization of the printed circuit board prevents the plating thickness of the printed circuit board from becoming less than the plated thickness and the plating variation due to the poor current flow rate, and in particular, distributes the uniform pressing force to the rotating bar. Registered Jig device for plating PCB for PCB can be prevented in Korea Patent Registration No. 10-593872.

That is, the technical configuration is a frame formed in a grid shape so that the printed circuit board can be supported, and the hanger bar is connected to both sides of the upper portion of the frame, wherein the end of the hanger bar is made of a conductive metal material, Clamp) is installed to enable direct energization to the frame.Rotating bars are pivotally installed on both sides of the frame as hinges, and there are many ground pins for pressing the printed circuit board. It is installed, the ground pin is installed in the lower portion of the extension member extending from the rotation bar to be arranged on the same line as the ground pin protruding on the upper surface of the frame.

In addition, the rotatable arm is installed on one side of the rotatable bar so as to rotate the rotatable bar, and the rotatable arm is made of steel wire of various diameters to have elasticity, and the synthetic resin is coated with a predetermined thickness to the outside, and the end thereof. The stepped portion is formed on the other hand, for resiliently fixing the pivotal arm to the frame, a pair of hooks are installed in the center of the horizontal bar connected to the upper portion of the frame, the insertion protrusion protrudes to the frame, the pivoting bar and the frame The ground pin of is configured to automatically adjust the horizontal and vertical plane of the printed circuit board.

At this time, a pair of hooks installed at the center of the horizontal bar is formed with a stopper at the rear thereof, so that the pivot arm can be detachably attached / attached to the hook, and a stepped part is formed inside the hook part in front of the pivot bar. The stepped portion formed at the end of the one-touch can be attached and detached.

Therefore, the printed circuit board is inserted into the insertion protrusion protruding from the lattice-shaped frame to align the horizontal and vertical planes of the printed circuit board with respect to the frame, and then the pivoting arm is rotated toward the frame so that the ground pin of the pivoting bar is By contacting the ground plane of the substrate to be energized, and by pressing the rotating arm to be coupled to the clamp, the ground pin of the rotating bar is pressed by the printed circuit board to be fixed.

At this time, the hook portion installed in the center of the horizontal bar is elastically coupled with the rotational arm to fix the rotational arm, the printed circuit board is fixed to the frame without flow to perform a plating operation of a uniform thickness state. It is.

However, in the past, the thickness of the printed circuit board was 0.1 mm or more. In recent years, the thickness of the printed circuit board is fixed to six points consisting of two symmetrical sides of the upper, middle, and lower sides due to the thinning of the thickness of 0.1 mm or less. The printed circuit board could not support the force applied at one point, causing cracks or tearing of the printed circuit board.

The jig device for plating a printed circuit board of the present invention is to solve the problems caused in the prior art as described above, and in order to minimize the force generated per one point of the printed circuit board, the ground supporting each other from the front and the back of the printed circuit board. In addition to the pins, a plurality of auxiliary fixing pins are installed on the rotation bar and the frame to prevent cracking or tearing of the printed circuit board.

In particular, the pivotal side fixing pin located on the side of the pivoting bar is to place the tip of the wide part inwardly than the tip of the wide part of the ground pin, and instead, the rubber tip protrudes to the same tip to allow auxiliary fixing by elasticity. will be.

In addition, when the rotational side fixing pin and the fixed side auxiliary pin are provided with the same outer diameter, even if only a slight twist occurs when they are opposed to each other, the pressure is deformed at the tip of the rubber tip as shown in FIG. The side fixing pins located on the frame side can be deformed so as to surround the rubber tip to the tip of the wide part so that the tip of the rotating side fixing pin has a smaller outer diameter than the tip of the fixing side fixing pin. It is intended to prevent the printed circuit board from deforming when the fixing pin of the pressing pin presses the printed circuit board.

In addition, when the jig device is inserted into the immersion tank while the printed circuit board is fixed, the bottom of the printed circuit board is introduced into the liquid phase because the thickness of the printed circuit board is thin, and vortex may occur, and deformation may occur at the bottom of the printed circuit board. In the present invention, the connecting frame is formed in a rhombic shape, and protrudes toward the front of both frames to connect a virtual line connecting the upper edge and the lower edge of the lozenge and the end of the fixed side ground pin is a vertical line from the ground. The vortex is formed in the immersion tank when the printed circuit board is input to the immersion tank, thereby minimizing the deformation of the printed circuit board.

In order to solve the above technical problem, the jig device for plating a printed circuit board of the present invention has a hanger bar 11 connected to both sides of an upper side of a jig frame 10 formed in a grid shape so as to support the printed circuit board. The end of the hanger bar 11 is provided with a clamp 13 which is made of a conductive metal material and is connected to a power source (pole), and the rotating bars 20 are hinged on both sides of the jig frame 10, respectively. Rotatingly installed, the rotating bar 20 is provided with a plurality of extension members, the extension member has a rotating side ground pin 30 for pressing the printed circuit board protruding, the frame 10 Rotating arm 40 to be disposed on the same line as the fixed-side ground pin 30 protruding on the upper surface of the rotating bar 20 to be detachable / attachable to one side of the rotating bar 20 so as to rotate the rotating bar 20. Meanwhile it is installed The east arm 40 is elastically coupled to the hook portion 50 installed in the center of the horizontal bar 12 connected to the upper portion of the frame 10, wherein the jig frame 10 is a rotation bar 20 and the frame In the jig device for plating a printed circuit board, wherein the ground pin 30 of (10) protrudes and installs an insertion protrusion 15 for automatically aligning the horizontal and vertical surfaces of the printed circuit board. The pins are each formed with a widening portion wider to the front end side, a rubber tip is provided on the side wall surface, and a rotating side auxiliary pin is formed between the plurality of rotating side ground pins formed on the rotating bar, the upper surface of the frame On the same side as the rotating side auxiliary fixing pin, the fixed side auxiliary fixing pin is installed, and the rotating side auxiliary pin is formed with a first widening part formed wide at the tip side, and the first rubber tip is installed on the side wall. But the first The tipless tip forms the same line as the rubber tip of the pivoting ground pin, and the tip of the first widening portion is located inward of the tip of the widening section of the pivoting ground pin, so that the tip of the first rubber tip moves toward the center of the tip of the first widening section. The fixed side auxiliary fixing pin has a second widening portion formed wide at the tip side, a second rubber tip surrounding the side wall and the tip is installed, and the tip of the second rubber tip is a fixed side ground pin. Located on the same line as the tip of the rubber tip, the outer diameter of the first rubber tip is smaller than the outer diameter of the tip of the second rubber tip,

The "a" shaped supporter is integrally bonded to both upper and lower sides of the frame, and is inserted between the supporter and the pivoting bar so that a uniform pressing force can be transmitted to each ground pin of the pivoting bar to prevent bending of the pivoting bar. It is characterized in that the supporting device consisting of a support member is provided.

At this time, the front end of the first widening portion is characterized in that located within 0.5 ~ 1 mm than the front end of the widening portion of the rotation side ground pin.

In addition, a connecting frame connecting each frame is installed at the lower side of the frame on both sides, and the connecting frame has a rhombic shape when viewed from the side, and protrudes in front of both frames to connect the upper and lower edges of the lozenge. The line connecting the end of the fixed pin and the ground pin is characterized in that it is configured to form a vertical line from the ground.

According to the present invention, cracks are generated in the printed circuit board by installing a plurality of auxiliary fixing pins on the rotation bar and the frame in addition to the ground pins supporting the printed circuit board from the front and the rear to minimize the force generated per point of the printed circuit board. Or tearing can be prevented.

In particular, the rotating side auxiliary pin located on the side of the rotating bar is positioned to the inner end than the wide end of the widening pin of the ground pin, and instead of the rubber tip protrudes to the same end, it is possible to perform secondary fixing by elasticity. .

In addition, when the rotational side fixing pin and the fixed side auxiliary pin are provided with the same outer diameter, even if only a slight twist occurs when they are opposed to each other, the pressure is deformed at the tip of the rubber tip as shown in FIG. The side fixing pins located on the frame side can be deformed so as to surround the rubber tip to the tip of the wide part so that the tip of the rotating side fixing pin has a smaller outer diameter than the tip of the fixing side fixing pin. It is possible to prevent the printed circuit board from deforming when the fixing pin of the pressing pin presses the printed circuit board.

In addition, when the jig device is inserted into the immersion tank while the printed circuit board is fixed, the bottom of the printed circuit board is introduced into the liquid phase because the thickness of the printed circuit board is thin, and vortex may occur, and deformation may occur at the bottom of the printed circuit board. In the present invention, the connecting frame is formed in a rhombic shape, and protrudes toward the front of both frames to connect a virtual line connecting the upper edge and the lower edge of the lozenge and the end of the fixed side ground pin is a vertical line from the ground. When the printed circuit board is input to the immersion tank, the same vortex is formed on both sides of the printed circuit board, thereby minimizing the deformation of the printed circuit board.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic perspective view of a jig device for plating a printed circuit board according to the present invention, Figures 3 and 4 are a fixed side ground pin 32 and a rotating side ground pin 31, a fixed side auxiliary in the jig device of the present invention Figure 5 is a schematic cross-sectional view showing a state before and after contacting the fixing pin 34 and the rotating side auxiliary fixing pin 33, Figure 5 is an exploded perspective view and a perspective view showing the configuration of the support device 60, Figure 6 is the present invention FIG. 7 is a perspective view illustrating a state in which a printed circuit board 80 is installed in a jig device for plating a printed circuit board, and FIG. 7 is a side view illustrating an installation state of a connection frame 70 in the present invention.

The basic configuration of the jig device of the present invention, the hanger bar 11 is connected to the upper both sides of the jig frame 10 formed in a grid shape to support the printed circuit board 80, the hanger bar 11 At the end, a clamp 13, which is made of a conductive metal material and is connected to a power source (pole), is installed, and on both sides of the jig frame 10, a pivot bar 20 is provided as a hinge so as to be rotatable. The bar 20 is provided with a plurality of extension members 30, and the extension member 30 is provided with a rotation side ground pin 31 for pressing the printed circuit board 80 protruding, the frame 10 Rotating arm 40 to be disposed on the same line as the fixed side ground pin 32 protruded on the upper surface of the upper side, and to be detachable / attachable to one side of the rotating bar 20 to rotate the rotating bar 20. ) Is installed, the pivot arm 40 is connected to the upper portion of the frame 10 It is to be elastically coupled to the hook portion 50 is installed in the center of the bar 12, wherein the jig frame 10 is a rotary bar 20 and the ground pins 31, 32 of the frame 10 are printed circuit Insertion protrusions 15 for automatically aligning the horizontal and vertical surfaces of the substrate 80 are provided to protrude.

In the present invention as described above, in the present invention, the fixed side ground pin 32 is installed on the upper, middle and lower portions of the frame, and the same side as the fixed side ground pin 32 installed on the frame at the upper, middle and lower portions of the rotation bar. Rotating side ground pins 31 were installed on the extension member 30 and the extension member 30 so as to provide the same.

In addition, two pairs of auxiliary pins are installed between the upper pair of ground pins and the middle pair of ground pins, and the two pairs of auxiliary pins are connected between the middle pair of ground pins and the lower pair of ground pins. Was installed.

That is, the rotation side auxiliary pins 33 are formed between the plurality of rotation side ground pins 31 formed on the rotation bar, and the fixed side auxiliary pins 34 between the plurality of fixed side ground pins 32 formed on the frame. ) Is formed, and the fixing side auxiliary fixing pin 34 is located on the same line as the rotating side auxiliary fixing pin 33.

At this time, the rotation side auxiliary fixing pin 33 formed on the rotation bar is installed on the extension member 30 like the rotation side ground pin 31.

The configuration of the ground pin and the configuration of the auxiliary fixing pin is as shown in Figs.

More specifically, the rotating side ground pin 31 and the fixed side ground pin 32 are formed with wide portions 31a and 32a, each of which has a wide width toward the tip side, and rubber tips 31b and 32b on the sidewall surface. It is installed.

The rotating side auxiliary fixing pin 33 is formed with a first widening portion 33a wider at the tip side, and a first rubber tip 33b is provided on the side wall.

At this time, the tip of the first rubber tip 33b forms the same line as the tip of the rubber tip of the pivoting ground pin 31, and the tip of the first expanding part 33a is the widening part 31a of the pivoting ground pin 31. The tip of the first rubber tip 33b rises toward the center of the tip of the first widening portion 33a by being positioned inside the tip.

In addition, the fixed side auxiliary fixing pin 34 also has a second wide portion (34a) is formed wide in the front end side, and the second rubber tip (34b) surrounding the side wall and the tip is installed, the second rubber tip The tip of 34b is positioned on the same line as the tip of the rubber tip of the fixed side ground pin 32, and the outer diameter of the tip of the first rubber tip 33b is smaller than the outer diameter of the tip of the second rubber tip 34b. It is done.

That is, the rotating side auxiliary fixing pin 33 has a length up to the tip of the first rubber tip 33b while being shorter than the fixed side ground pin 32 and the rotating side ground pin 31 and the rotating side auxiliary fixing pin 33. ) Is to have the same length as the rubber tip of the fixed side ground pin 32 and the rotating side ground pin (31).

In addition, the fixed side auxiliary fixing pin 34 has a structure in which the second rubber tip 34b wraps up to the tip as well as the side wall, so that the outer diameter of the tip is larger than the first rubber tip 33b, and the second rubber tip ( 34b) The length to the tip is located on the same vertical line as the length to the tip of the rubber tip of the rotary side ground pin 31 as shown.

Referring to the reason for forming the structure of the rotation side auxiliary fixing pin 33 and the fixed side auxiliary fixing pin 34 as described above is as follows.

1 is a configuration of the auxiliary fixing pin generally expected when forming the auxiliary fixing pin for the purpose of dispersing the pressure in addition to the ground pin.

This structure is a structure covering a rubber tip having elasticity on both sides.

In other words, both ends of the rubber tip have the same diameter and are arranged on the same line.

Such a structure should always make the auxiliary fixing pin of the rotating bar exactly contact the auxiliary fixing pin on the frame when the rotating bar is rotated.

However, as a result of manufacturing and using the jig device several times, when the wear of the product and the error of the fine setting in the production occurs due to the elapse of the use period, as shown in the drawing, the auxiliary fixing pins on both sides do not touch each other, but contact with each other by shifting. .

At this time, the deformation occurs at the tip of the rubber tip at the displaced portion due to the pressing pressure in the direction facing each other, thereby causing a problem that the deformation occurs by pressing the printed circuit board (80).

By the way, in the configuration of the present invention as shown in Figures 3 and 4, the first side rubber tip 33b is formed of the same length as the rubber tips of the ground pin instead of the rotational side fixing pin 33 is short to the tip As a result, the tip of the first rubber tip 33b has a shape recessed inward, and the diameter thereof becomes short.

Further, the second rubber tip 34b covering both the side wall and the tip of the fixed side auxiliary pin 34 extends to the tip of the fixed side auxiliary pin 34 so that the reduction in diameter at the tip is less likely to occur.

That is, as shown in FIG. 4, the fixed side auxiliary fixing pin 34 and the rotating side fixing pin 33 are in contact with each other in the outer diameter portion of the first rubber tip 33b of the rotating side fixing pin 33. The second rubber tip 34b of the auxiliary fixing pin 34 is positioned inside the outer diameter of the tip, and thus the first rubber tip 33b of the rotating side auxiliary fixing pin 33 even when the rotating bar does not rotate at the correct point. Is pressed against the entire area of the distal end of the second rubber tip 34b.

This is to have a structure that can prevent the deformation of the printed circuit board 80 as much as possible.

That is, in the present invention, the auxiliary fixing pins for distributing the pressure are not simply located between the fixed side ground pin 32 and the rotating side ground pin 31, but the length and the rotating side of the rotating side auxiliary pin 33 are fixed. By changing the length of the first rubber tip 33b covering the auxiliary fixing pin 33, the second rubber tip 34b is configured to cover up to the tip of the fixed side auxiliary fixing pin 34. Even if is generated, the printed circuit board 80 by the pressure is to prevent the local deformation and local failure occurs.

This is to prevent the deformation of the printed circuit board 80 while stably dispersing the pressure while having an effect of dispersing the pressure.

On the other hand, in the present invention by providing specificity to the configuration of the rotation side auxiliary fixing pin 33 and the fixed side auxiliary fixing pin 34 as described above by installing the support device 60 in both the upper and lower sides of the frame When the rotation bar is rotated, the rotation bar is prevented from being bent by receiving a compressive force in the longitudinal direction, and the rotation side ground pin 31 and the fixed side ground pin 32 installed on the upper, middle, and lower sides have a uniform pressure and closely adhere to each other. And, it is characterized in that between the rotating side auxiliary fixing pin 33 and the fixed side auxiliary fixing pin 34 installed between the having a uniform pressure.

At this time, the configuration of the support device 60, as shown in Figure 5, the "61" shaped support base 61 is integrally bonded to both the upper and lower sides of the frame, and prevents the bending of the rotation bar, each ground of the rotation bar It is characterized in that the support member 62 is fitted between the support 61 and the rotation bar so that a uniform pressing force can be transmitted to the pin.

The support 61 has a "a" shape formed with a rotation bar insertion groove 61a on one side as shown.

At this time, the support member 62 has a support inserting groove 62a formed at one side as shown in the drawing, and an opposite contact groove 62b is formed at the opposite side thereof, and the support inserting insert 62a is supported by the support 61. The "a" is inserted into one side of the projection, arc-shaped contact groove (62b) is characterized in that it has a structure in which one side of the rotation bar is in close contact.

On the other hand, conventionally, when the jig device is inserted into the immersion tank with the printed circuit board 80 fixed, the bottom of the printed circuit board 80 is introduced into the liquid phase because the thickness of the printed circuit board 80 is thin, and vortex is generated. There is a problem that deformation occurs in the lower portion of the printed circuit board 80.

In the present invention, the connecting frame 70 for connecting each frame is installed in the lower frame of both sides, the connecting frame 70 takes a rhombic shape when viewed from the side, and protrudes toward the front of both sides of the upper corner of the lozenge Virtual lines connecting the lower edge and the lower edge of the fixed side ground pin 32 is configured to form a vertical line from the ground, so that when the printed circuit board 80 is introduced into the immersion tank on both sides of the printed circuit board 80 The same vortex is formed, thereby minimizing the deformation of the printed circuit board 80.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the following claims. Those of ordinary skill will want to know easily.

1 is a schematic cross-sectional view showing a phenomenon when the auxiliary fixing pin is predicted for pressure dispersion in the jig device for printed circuit board plating.

Figure 2 is a perspective view showing a jig device for plating a printed circuit board of the present invention.

Figure 3 is a cross-sectional view showing the installation of the rotating side ground pin and the fixed side ground pin and the rotating side auxiliary pin and the fixed side auxiliary pin in the present invention.

4 is a cross-sectional view showing the positional relationship at the moment of contact with each other when the rotation bar is rotated in the structure of FIG.

Figure 5 is an installation state showing the support device used in the present invention.

Figure 6 is a perspective view showing a state where a printed circuit board is installed in the jig device of the present invention.

Figure 7 is a side schematic view showing an installation state of the connection frame in the present invention.

Description of the Related Art

10: jig frame 11: hanger bar

12: horizontal bar 13: clamp

15: insertion protrusion 20: rotation bar

30: extending member 31: rotating side ground pin

31a: widening portion 31b: rubber tip

32: fixed side ground pin 32a: widening part

32b: rubber tip 33: rotating side auxiliary pin

33a: first widening portion 33b: first rubber tip

34: fixed side auxiliary fixing pin 34a: second expansion part

34b: rubber tip 40: slewing rock

50 hook portion 60 support device

61: support 61a: rotation bar insertion groove

62: support member 62a: support insertion groove

62b: tight groove 70: connecting frame

80: printed circuit board

Claims (3)

The hanger bar 11 is connected to both sides of the jig frame 10 formed in a lattice shape to support the printed circuit board 80, and the end of the hanger bar 11 is made of a conductive metal material. Clamps 13 are connected to each other, and rotating bars 20 are rotatably installed as hinges on both sides of the jig frame 10, and a plurality of extension members are provided on the rotating bars 20. 30 is provided, and the extension member 30 has a rotation side ground pin 31 protrudingly formed to press the printed circuit board 80 so as to protrude on the upper surface of the frame 10. Rotating arm 40 is installed on the same line as 32 and detachable / attachable on one side of the rotating bar 20 so that the rotating bar 20 can be rotated. 40 is a hook portion 50 is installed in the center of the horizontal bar 12 connected to the upper portion of the frame 10 ) And the pivoting bar 20 and the ground pins 31 and 32 of the frame 10 automatically adjust the horizontal and vertical surfaces of the printed circuit board 80 to the jig frame 10. In the jig device for plating a printed circuit board, the insertion protrusion 15 protrudes, The rotating side ground pin 31 and the fixed side ground pin 32 are formed with wide portions 31a and 32a, each of which has a wide width toward the tip side, and rubber tips 31b and 32b are provided on the sidewalls. , A rotating side auxiliary fixing pin 33 is formed between the plurality of rotating side ground pins formed on the rotating bar, and the fixed side auxiliary fixing pin 34 is arranged in the same line as the rotating side auxiliary fixing pin 33 on the upper surface of the frame. The rotating side auxiliary fixing pin 33 is provided with a first widening portion 33a wider at the tip side, and a first rubber tip 33b is provided on the side wall. (33b) The tip is in line with the tip of the rubber tip of the rotating side ground pin 31, and the tip of the first widening portion 33a is positioned inward of the tip of the widening portion 31a of the rotating side ground pin 31. As a result, the tip of the first rubber tip 33b has a shape in which the tip of the first widening portion 33a has risen toward the center of the tip, and the second side widening portion 34a having the width of the fixed side auxiliary pin 34 is formed wide at the tip side. The second rubber tip 34b surrounding the side wall and the tip is provided, and the tip of the second rubber tip 34b is formed of the fixed side ground pin 32. Located on the same line as the tip of the rubber tip, the outer diameter of the tip of the first rubber tip 33b is smaller than the outer diameter of the tip of the second rubber tip 34b, Supports 61 of the "b" shaped integrally bonded to the upper and lower sides of the frame and the support 61 to prevent the bending of the pivoting bar so that a uniform pressing force can be transmitted to each ground pin of the pivoting bar. And characterized in that the support device 60 composed of a support member 62 is inserted between the rotation bar,  Jig device for plating printed circuit board. The method of claim 1, The front end of the first widening portion (33a) is characterized in that located within 0.5 ~ 1 mm than the front end of the widening portion (31a) of the rotation side ground pin (31), Jig device for plating printed circuit board. 3. The method of claim 2, The connecting frame 70 is connected to each frame at the lower side of the frame, and the connecting frame 70 has a rhombic shape when viewed from the side, and protrudes in front of both frames to form upper and lower corners of the lozenge. The virtual line connecting the edge and the line connecting the tip of the fixed side ground pin 32 is configured to form a vertical line from the ground, Jig device for plating printed circuit board.

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