JPH0577263U - Jig for holding objects - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the occurrence of gelled film due to current concentration. [Structure] A base body (10) which can be attached to and detached from a carrying frame (7) and the like,
A clamper (20) including one holding claw (21) and the other holding claw (25), and a support mechanism (30) for supporting both the holding claws (21, 25) in a clamp / unclamp operation.
A clamping force applying mechanism (50) for applying a clamping force to the clamper (20), and the clamping force applying mechanism (5
0) to an unclamped state, an unclamping force applying means (40) for applying an external force (F), and a holding jig (100) for an object to be processed (W).
And a metal member in which the one holding claw (21) and the other holding claw (25) are made of an electrically insulating resin, and the one holding part (22) and the power feeding part (23) of the one holding claw (21) are embedded. Formed from the exposed part of (28), while holding claw (25)
The other sandwiching portion (26) of the support mechanism (3) has a sawtooth shape.
(0) is rotatably held by an eccentrically arranged support shaft (30), and further, inclined surfaces (24, 27) facing outward are provided below both clamping claws (21, 25). .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a holding jig for attaching and holding an object to be processed to a carrying frame or the like.

[0002]

[Prior Art]

 As shown in FIG. 3, a plate-like object W to be processed such as a printed circuit board is attached to the transfer frame 7 or the like via the holding jig 100 and dipped in the processing liquid Q in various surface treatment apparatuses. In addition, many are configured to perform processing while supplying power as needed. As shown in FIG. 4, the conventional structure of the holding jig 100 is generally composed of a base body 10, a clamper 20, a support mechanism 30, a clamping force applying mechanism 50, and an unclamping force applying means 40. is there.

That is, the base body 10 is attached to the transport frame 7 via the hanger 15. The clamper 20 is composed of one holding claw 21 and the other holding claw 25, and is supported by a support mechanism 30 so as to be able to perform clamp / unclamp operation. The support mechanism 30 is composed of a pair of brackets 31 and 35 pivotally connected by a pin 32. In this example, the other holding claw 25 is tilted and rotated relative to the stationary one holding claw 21. , The both holding portions 22 and 26 are supported so as to be spaced apart from each other. Further, the clamping force applying mechanism 50 is composed of a pair of overlapping straight leaf springs 51 and 55, and is always applied with the clamping force. The unclamping force applying means 40 for applying the external force (unclamping force) F releases the clamping force, and is composed of the operating lever (40) connected to the other holding claw 25 via the other bracket 35. In addition, 23 in FIG. 4 is a power feeding part.

Therefore, an external force F is applied to the operating lever (40) to release both of the sandwiching claws 21, 25 (22, 26), and the workpiece W is placed in contact with the side surface 21S of the one sandwiching claw 21. Then, the external force F is removed. Then, the clamping force applying mechanism 50 (51, 55) operates, and the holding claw 25 rotates around the pin 32 of the support mechanism 30. As a result, the workpiece W is clamped by the sandwiching portions 22, 26 by the urging force of the springs 51, 55.

After that, the workpiece W can be immersed in the treatment liquid Q, as shown in FIG. 3, by transporting and lifting the transport frame 7 with a crane or the like.

[0006]

[Problems to be solved by the device]

 However, the above-mentioned conventional structure has the following problems, and its solution is strongly desired.

That is, since the support mechanism 30 has a structure in which the pair of brackets 31 and 35 are rotatably connected by the pin 32, the support mechanism 30 becomes a liquid pool and the amount of retained liquid increases. In addition, the portion where the workpiece W is clamped by the sandwiching claws 21, 25 (22, 26) also forms a liquid reservoir. Therefore, when the object W to be processed is lifted from the processing liquid Q, dripping occurs on the surface of the object W to be processed, and the film is formed into two layers. This causes serious problems such as poor development, poor etching, and low resolution during exposure when the printed circuit board is subjected to electrodeposition resist processing.

When the liquid pool is formed and the cleaning property is poor, a gelled film is generated on the surface of the object W to be processed that approaches the sandwiching portions 22 and 26 due to the current concentration during electrolysis, resulting in poor exposure afterwards. Cause of. In other words, it also causes problems during processing.

Since the support mechanism 30 has many movable parts and a complicated structure, it is impossible to coat the electrically insulating resin. Therefore, it causes the gelled film to be generated over a wide area.

Since the sandwiching portions 22 and 26 are configured to clamp the workpiece W with the wide flat surfaces of the flat plate-shaped sandwiching claws 21 and 25, the clamping force is weak, which causes insufficient power supply and a drop during transportation. On the other hand, it is conceivable to increase the spring force of the clamping force applying mechanism 50, but this is not practical because the external force F for unclamping must be excessive.

Since some of the objects to be processed W are very thin, it is difficult to secure sufficient holding force without causing deformation of the objects to be processed, and the applicability is small.

Since the structure is complicated, it takes time and effort to assemble and adjust, resulting in high cost.

An object of the present invention is to provide a jig for holding an object to be processed, which is capable of sweeping a liquid reservoir to reduce liquid dripping, suppressing the formation of a gelled film, easy to clean, low cost and widely applicable. There is something to do.

[0014]

[Means for Solving the Problems]

 A jig for holding an object to be processed according to the present invention supports a base body that can be attached to and detached from a transfer frame, a clamper including one holding claw and the other holding claw, and supports both holding claws so that they can be clamped and unclamped. A holding mechanism for an object to be processed, which includes a support mechanism, a clamping force applying mechanism that applies a clamping force to the clamper, and an unclamping force applying means that applies an external force to bring the clamping force applying mechanism into an unclamping state. In the device, the base body, the one-side holding claw, and the other holding claw are formed of an electrically insulating resin, and the base and the one holding claw are integrally formed, and the one holding part and the one-side holding part and the power feeding part are held in one side. It is formed with an exposed part of a metal member embedded in the claw, and an inclined surface that slopes outward is formed below one of the clamping claws, and the other clamping part of the other clamping claw is formed in a sawtooth shape and below it. Outside Is formed so as to incline toward the other side, the support mechanism is rotatably supported on the other holding claw, and the other holding portion is arranged at a position where it can always contact the one holding portion by the urging force of the clamping force applying mechanism. It is characterized in that it is formed from an installed support shaft.

[0015]

In the present invention having the above structure, when an external force is applied to the other holding claw via the unclamping force applying means, the other holding claw rotates about the support shaft forming the support mechanism. Then, the other sandwiching portion having the saw-tooth shape is separated from the one sandwiching portion. Therefore, the object to be processed can be inserted between the sandwiching portions. Here, when the external force to the unclamping force applying means is removed, the clamping force applying mechanism operates, while the sandwiching portion rotates about the support shaft in the opposite direction. That is, the other sandwiching part having a saw-tooth shape approaches the one sandwiching part and clamps the object to be processed. On the other hand, the sandwiching portion is biased in the biting direction, so that clamping can be performed reliably and stably regardless of the thickness of the object to be processed.

Since the other holding portion and the power feeding portion are formed by the exposed portion of the metal member buried in the other holding claw, the workpiece can be reliably connected to the power feeding system at the same time as the clamp. Therefore, efficient treatment can be performed, and since the whole is made of an electrically insulating resin, it is possible to prevent the formation of a gelled film due to current concentration during electrolysis.

On the other hand, when lifted up from the processing liquid, both sandwiching portions do not serve as a liquid reservoir and the liquid drip is small. However, since the one sandwiching portion and the other sandwiching portion are provided with the inclined surfaces facing outward, the liquid thereof does not flow to the outside and drip onto the object to be treated. Therefore, it is possible to prevent the film from forming into two layers.

[0018]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the holding jig 100 includes a base body 10, one holding claw 21 and the other holding claw 25 made of an electrically insulating resin, and one holding claw 21 one holding part 22 and a power feeding part 23. Is formed from the exposed part of the embedded metal member 28, and the other holding part 26 of the other holding claw 25 is rotatably held by an eccentrically arranged pin (30) forming a support mechanism 30 having a sawtooth shape, and Sloping surfaces 24 and 27 facing outward are provided below the sandwiching claws 21 and 25.

The treatment liquid Q is to be subjected to electrodeposition resist treatment, and the object to be treated W is a printed circuit board. Further, since the whole (10, 21, 25) is made of an electrically insulating resin so as to enhance the corrosion resistance and not cause current concentration, the workpiece W is held up and down as shown in FIG. It can be clamped by the jigs 100, 100.

In FIG. 1, the base body 10, the first holding claw 21 and the second holding claw 25 are made of an electrically insulating resin (for example, PEEK, PPS). The base body 10, the one-side sandwiching claw 21 and the bracket 60 are integrally formed. Therefore, it has high corrosion resistance, high mechanical strength, and can prevent the formation of a gelled film due to current concentration during electrolysis.

The base body 10 is bolted to the upper frame 8 (lower frame 9) shown in FIG. 2 and is arranged at a constant pitch in the longitudinal direction thereof. In addition, 7 in FIG. 2 is a carrying frame, and 7F is a hook portion thereof which is attached to and detached from a crane or the like. Reference numeral 7E is a power supply connection portion for electrically connecting to the power supply device, and is connected to the lower frame 9 by conduction bars 6 and 6.

It should be noted that the holding jig 100 has the same shape whether it is attached to the upper frame 8 or the lower frame 9 shown in FIGS. 1 and 2, and therefore the following description will be given with reference to FIG. A description will be given by focusing on the one attached to No. 8.

First, the one-side holding claw 21 forming the clamper 20 is a fixed claw, and an inclined surface 24 facing outward is provided below the fixed claw 21. A metal member 28 is embedded in the one-side clamping claw 21. In this embodiment, it is made of stainless steel. The exposed portion of the metal member 28 forms one holding portion 22 and the power feeding portion 23. Therefore, since the portion of the clamped workpiece W facing the workpiece W is covered with the electrically insulating resin, it is possible to prevent the gelled film from being generated due to current concentration.

Next, the other holding portion 25 has a link shape, the other holding portion 26 having a saw-tooth shape is integrally formed on the outer surface of the tip, and an inclined surface 27 facing outward is provided below the other holding portion 26. . The inclined surface 27 works together with the inclined surface 24 so that when the object W to be processed is pulled up from the processing liquid, dripping does not drop and adhere to the object W to be processed. The other holding claw 25 and the operation lever 40 as the unclamping means are integrated.

Here, as shown in FIG. 1, the support mechanism 30 supports the other holding claw 25 so as to be capable of performing clamp / unclamp operation, and supports both holding portions 22 by the urging force of the clamping force applying mechanism (spring) 50. , 26 is composed of a support shaft (30) eccentrically arranged at a position where the other holding claw 25 can be urged in a direction in which the two always contact.

That is, the support shaft (30) is arranged below and outside the clamp points (22, 26). On the other hand, the spring forming the clamping force applying mechanism 50 is stretched between the pin 41 provided in the middle of the operation lever (40) and the pin 61 of the bracket 60 (which is one body with the holding claw 21). It is set up. Therefore, the other holding claw 25 is always biased in the counterclockwise direction in FIG. 1 (clockwise direction for the lower one in FIG. 1). That is, since the other holding portion 26 is rotationally biased in the direction of pressing the workpiece W against the one holding portion 22, that is, in the direction of being bitten into the workpiece W, for example, an extremely thin workpiece of 0.2 mm is processed. The object W can be surely held.

It should be noted that the one holding claw 21 and the other holding claw 25 are arranged on the same plane, but the support shaft (30) is planted in a bracket 60 which is arranged so as to be displaced laterally. This is to prevent further dripping. The stopper 62 on the bracket 60 regulates the position of the tip of the other holding claw 25, and is provided for the convenience of automation of clamp / unclamp performed by protecting the spring (50) and applying external force F.

In the embodiment having such a configuration, the clamp point of the workpiece W can be made small by the cooperation of the one holding portion 22 and the other holding portion 26, so that reliable clamping can be performed and the feeding portion 24 can be narrowed. As a result, it is possible to reduce the gelled film formation area due to current concentration. Further, since the structure is simple as a whole and no liquid reservoir is formed, it is possible to prevent the electrodeposition film from being formed into two layers. Furthermore, since the whole (10, 21, 25, 60) is molded with the electrically insulating resin, the film formation range of gelation due to current concentration during the electrolytic treatment can be further narrowed. The cleanability can also be improved.

Next, the operation of this embodiment will be described. In the normal state, both clamping portions 22 and 26 (clamping points) are held by the spring forming the clamping force applying mechanism 50 so that the other clamping claw 25 is centered on the support shaft (30) with respect to the holding device 100 on the upper frame 8 side. Is biased in the counterclockwise direction and in the clockwise direction with respect to the holding jig 100 on the lower frame 9 side, so that they are in contact with each other as shown in FIG.

Here, each holding jig 100 is unclamped by an automatic unclamping device (not shown). That is, in FIG. 1, when an external force F is applied to the operating lever forming the unclamping force applying means 40, the operating lever (40) resists the urging force of the spring forming the clamping force applying mechanism 50 and the supporting mechanism (supporting mechanism). It rotates in the counterclockwise direction (or clockwise direction) about the axis 30. Therefore, each of the other sandwiching claws 25 separates from each of the one sandwiching claws 26, and the unclamped state is established.

Next, when the transfer frame 7 (processing object W) is moved to the previously set processing object W (transfer frame 7) and the external force F is removed, the spring (50) causes the operating lever to move. (40) That is, the other sandwiching claw 25 is rotationally biased in the clockwise direction (counterclockwise direction). Therefore, the other holding portion 26 approaches the one holding portion 22 and clamps the workpiece W from above and below. Since the clamp points (22, 26) are small, the workpiece W can be securely held without being deformed and with a strong clamping force. Moreover, since the other holding portion 26 has a sawtooth shape and works in a direction to be bitten into the object W to be processed, for example, the object W to be processed having a size of 0.2 mm can be stably clamped. Further, at the same time as the clamp, the upper (lower) portion of the workpiece W can be securely pressed and connected to the power feeding portion 23 (23).

Thus, the transport frame 7 is transported by a crane or the like, the workpiece W is immersed in the treatment liquid Q, and the electrodeposition resist treatment is performed while supplying power. At this time, since each holding jig 100 has a simple structure, it has been sufficiently washed in advance, and the whole (10, 21, 25, 60) is made of an electrically insulating resin. Further, since the power feeding portion 23 is small, gelling film formation due to current concentration can be minimized.

After the processing, the transport frame 7 is pulled up. The holding jig 100 has a simple structure as a whole and does not have a conventional supporting mechanism (30) including a flange, a pin and the like. Further, since no liquid reservoir is formed on the clamp points (22, 26), it is possible to reduce the amount of liquid dripping. Moreover, since the dripping liquid is caused to flow to the outside by the inclined surfaces 24 and 27, the dripping of the liquid onto the object to be processed W can be minimized. Therefore, it is possible to completely prevent the formation of a double film and perform high-quality treatment.

Therefore, according to this embodiment, the base body 10, the one holding claw 21 and the other holding claw 25 are made of the electrically insulating resin, and the one holding part 22 and the power feeding part 23 of the one holding claw 21 are formed. Is formed from the exposed part of the embedded metal member 28, and the other holding part 25 of the other holding claw 25 has a sawtooth shape and is rotatably held by an eccentrically arranged support shaft (30) forming a support mechanism 30. In addition, since the inclined surfaces 24 and 27 facing outward are provided below both the sandwiching claws 21 and 25, the liquid pool can be swept away to reduce the liquid dripping, suppress the generation of the gelled film, and clean the surface. It is easy to automate and can be manufactured at low cost. Further, even an extremely thin object W to be processed can be reliably clamped without causing deformation and has wide applicability. In particular, since the whole (10, 21, 25, 60) is made of an electrically insulating resin, it is possible to completely prevent generation of a gelled film due to current concentration. Further, since the whole (10, 21, 25, 60) is formed of the electrically insulating resin, the corrosion resistance is high, and thus the workpiece W can be clamped vertically. Therefore, the workpiece W can be stably held during the transportation and the electrolytic treatment. Even a thin workpiece W can be prevented from shaking and deforming, and high quality processing can be performed.

Further, since the other holding portion 26 has a sawtooth shape provided on the outer peripheral surface and the support shaft (30) is eccentrically arranged, it works in the direction in which the workpiece W is bitten. Therefore, the workpiece W can be clamped more reliably, which is advantageous in automatic conveyance.

Further, since the clamp points (22, 26) are narrowed and the one sandwiching claw 21 is provided with the inclined surface 24 and the other sandwiching claw 25 is provided with the inclined surface 27, the liquid can be drained to the outside. Therefore, the liquid dripping onto the object to be processed W can be further ensured.

Further, since the support mechanism (spindle) 30 is attached to the bracket 60 which is disposed so as to be displaced more laterally than the sandwiching claws 21 and 25, the liquid dripping factor can be reduced also from this point. .

[0038]

[Effect of the device]

 According to the present invention, the base body, the one holding claw and the other holding claw are formed of an electrically insulating resin, and the one holding part of the one holding claw and the power feeding part are formed of the exposed part of the embedded metal member. The other pinching portion of the other pinching claw is formed into a sawtooth shape so as to be rotatably held on an eccentrically arranged support shaft that forms a support mechanism, and an inclined surface facing outward is provided below both pinching claws. The liquid reservoir can be swept away to reduce liquid dripping, suppress the formation of gelled film, and can be easily cleaned and automated, and can be manufactured at low cost. In addition, even an extremely thin object to be processed can be reliably clamped without causing deformation and has a wide applicability regardless of the thickness of the object to be processed. In particular, since the whole is made of an electrically insulating resin, it is possible to completely prevent the formation of a gelled film due to current concentration.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is likewise a diagram for explaining a state in which the carrier frame is mounted.

FIG. 3 is a diagram for explaining a usage mode of a conventional example.

FIG. 4 is a side view showing a conventional example.

[Explanation of symbols]

 7 Conveyance Frame 8 Upper Frame 9 Lower Frame 10 Base 20 Clamper 21 One Clamping Claw 22 One Clamping Part 23 Power Feeding Section 24 Sloping Surface 25 Other Clamping Claw 26 The Other Clamping Section 27 Slope 30 Support Mechanism (Spindle) 40 Unclamping Force Application Means (operation lever) 50 Clamping force applying mechanism (spring) 60 Bracket 62 Stopper 100 Holding jig

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location C25D 17/08 JA

Claims (1)

[Scope of utility model registration request] 1. A base that is attachable to and detachable from a transport frame, a clamper including one holding claw and the other holding claw, and a support mechanism that supports both the holding claws so that they can be clamped and unclamped.
A holding jig for an object to be processed, which comprises a clamping force applying mechanism for applying a clamping force to a clamper, and an unclamping force applying means for applying an external force to bring the clamping force applying mechanism into an unclamping state. The sandwiching claw and the other sandwiching claw are formed of an electrically insulating resin, and the base body and the one sandwiching claw are integrally formed, and the one sandwiching part and the power feeding part of the one sandwiching claw are embedded in the one sandwiching claw. An inclined surface that is formed with an exposed portion, forms an inclined surface that inclines toward the outside below one of the clamping claws, and forms the other clamping portion of the other clamping claw in a sawtooth shape and inclines outward toward the bottom. And is disposed at a position that rotatably supports the other sandwiching claw of the support mechanism and allows the other sandwiching portion to be constantly in contact with the one sandwiching portion by the urging force of the clamping force applying mechanism. Holding jig of the workpiece, characterized in that formed from the support shaft.