JPH0512291Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a surface treatment apparatus for suspending and surface-treating a plate-shaped or film-shaped object to be treated, and particularly to a clamping jig for the same.

(Prior art) Generally, in a surface treatment apparatus that performs surface treatment such as electroplating or other electrolytic treatment on plate-shaped materials such as printed circuit boards, or chemical plating or other electroless treatment, the workpiece is kept energized. A clamp jig is used to do this.

As shown in FIG. 6, for example, this conventional clamping jig includes a rod 21 for transporting a workpiece, a frame 22 suspended from the rod 21 for transporting a workpiece, and a rod for transporting a workpiece. It is provided with clips 23 fixed at appropriate intervals, and a plurality of lower clamp parts 24 arranged at predetermined intervals on the lower end horizontal rod 22a of the frame body 22.

The workpiece A is transferred to the workpiece conveying rod 21.
It is fixed in a space surrounded by a frame body 22 by a clip 23 and a lower clamp part 24.

(Problems to be Solved by the Invention) By the way, in the conventional clamp jig described above, the workpiece A is fixed by the clip 23 and the lower clamp part 24 so that it cannot move. For this reason, when surface-treating weak or thin workpieces, vibrations in the tank, air agitation, or impact during transportation may cause damage to the clamp part.
There was a drawback that the object to be processed was damaged, resulting in a defective product.

The purpose of the present invention was made in view of the above-mentioned drawbacks, and is to provide a clamping jig for a surface treatment device that can safely and reliably perform surface treatment even on thin objects with weak strength. It is in.

(Means for Solving the Problems) A clamp jig according to the present invention includes a lever having a plurality of concave and convex portions on the operating portion at its tip, a support portion in which the lever is semi-rotatably supported by a pin, and two pieces of plate material with one end fixed to a support part, a cylindrical spacer that holds the two pieces of plate material in parallel at a predetermined interval, a protrusion fixed to one of the plate materials, and an uneven portion of the lever. It is equipped with a spring that biases the material in the direction in which it comes into contact with a protrusion fixed to one side of the plate material, and a spring that maintains a tensile force corresponding to the external load of the workpiece and the strength according to the plate thickness. It is characterized by being arranged so that it can be changed to any frame position.

(Function) As described above, the jig according to the present invention has two plates attached to the top and bottom or left and right sides of the conveyance frame via a spacer to maintain clearance, and a curved plate-shaped spring is attached to one end. Therefore, it is possible to obtain a tensile force corresponding to the external load on the object to be processed. Therefore, even if the object to be processed is subjected to an external load inside the tank or a shock during transportation, it will not be damaged.

(Example) An example of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of the main parts of the jig of the present invention. In the same figure, the clamp jig includes a lever 1 having a plurality of concave and convex portions 1a on the operating portion at its tip;
A support part 2 supporting the lever 1 semi-rotatably with a pin 7, two pieces of plates 3 and 4 having one end fixed to the support part 2, and two pieces of plates 3 and 4 arranged at a predetermined interval. Cylindrical spacers 5 and 6 held in parallel, a protrusion 12 fixed to one of the plates, and a spring that biases the concave and convex portion 1a of the lever 1 in a direction in which it comes into contact with the protrusion 12 fixed to the plate 4. 11, and a spring 8 that maintains a tensile force corresponding to the external load of the workpiece and the strength according to the plate thickness, and is configured so that the frame body position can be changed to any desired position according to the plate size. There is. Here, the lever 1 is semi-rotatably supported by a pin 7 on the support portion 2, and presses and fixes the object to be processed with the uneven portion 1a at the tip. The upper end of the plate material 4 is located above the support part 2 that supports the lever 1, and is bent in a direction retreating from the lever 1.

In addition, in the part of the plate material 4 facing the lever 1,
A protrusion 12 is fixed, and the object to be processed is pressed and fixed between the protrusion 12 and the uneven portion 1a of the lever 1. The spacers 5 and 6 are placed at the upper and lower ends of the plates 3 and 4, and bolts 9 and 9 are inserted into the spacers and fixed with nuts 10 and 10, respectively. A spring 11 that biases the lever 1 has one end engaged with the operating rod 1b of the lever 1, and the other end engaged with a bolt 9 that fixes the spacer 6 below. The lever 1 is biased in the direction of pressing the object to be processed.

The spring 8 is bent into a substantially U-shape,
It is interposed between the left and right plates 3 and 4 above the lower spacer 6.

As shown in FIG. 5, the auxiliary frame mounting bracket 40 has a pair of clamping pieces 40a, 40b pivoted around a shaft 41, and plate springs 42a, 42b fixed to the inside of the rear ends of the clamping plates 40a, 40b. is biased in the direction in which the distal ends are brought into pressure contact. Clamping piece 40
Clamping fittings 43a, 43 are attached to the tips of a, 40b.
b is fixed.

A sleeve 44 for inserting the vertical rod portion is fixed to one side 43a of the two clamping metal fittings 43a, 43b. This sleeve 44 has a hole 45 for inserting a clamping pin on the other clamping metal fitting 43b side.
A clamping pin 46 protruding from the tip of the other clamping fitting 43b is inserted through this hole 45.

On the other hand, a plurality of recesses 47 for engaging the clamping pins are formed at regular intervals at the upper end of the vertical rod portion 22b of the frame 22, and the vertical rod portion 2 inserted into the sleeve 44
2b has a recess 47 into which a holding pin 46 is fitted to prevent it from coming off.

The holding fitting 40 configured in this manner is electrically connected to the rod 21 for transporting the object to be processed by directly screwing one of the clamping pieces 40a to the rod 21 for transporting the object to be processed. It is fixed in a fixed position.

FIG. 4 is a sectional view showing the workpiece A being clamped between the clip 23 and the clamp jig of the present invention. In the same figure, the clip 23 includes a holding piece 23a electrically connected to the rod 21 for conveying the object to be processed;
The other clamping piece 23b is pivotally attached to the clamping piece 23a via a shaft 26, and a spring 27 that biases the tips of the clamping pieces 23a and 23b in a direction that presses against each other. It is clamped and fixed with a clamp jig.

The clamp jig configured as above is attached to the frame 2.
A plurality of them are inserted into the horizontal rod 20a of No. 0 at appropriate intervals.

Film-shaped,
Alternatively, hold the end of the thin plate-shaped workpiece A with the lever 1.
Operate and clamp. When an external force such as rocking or air agitation is applied to the workpiece clamped with the clamp jig according to the present invention in the processing tank,
First, in response to an external force in the vertical direction, the spring 8 bends and moves by a certain amount in response to this external force.

In this way, the clamping jig moves in the direction of the load on the object to be processed in accordance with the load, thereby alleviating the external load within the processing tank and the shock during transportation, thereby preventing damage.

In addition, in the above embodiment, the clamp jig is attached to the frame body 20.
Although the case has been described in which it is attached to the horizontal bar 20a, the present invention is not limited to this, and it may be attached to the vertical bar 20b.

(Effects of the invention) As explained in detail above, the clamping jig according to the invention can cope with external forces such as rocking or air agitation applied to the workpiece in the tank. Since it can be moved by a certain amount, the object to be processed will not be damaged.

Therefore, it is possible to reliably and safely perform surface treatment even on thin and weak objects that are difficult to hold with conventional clamp jigs.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a main part showing an embodiment of the present invention, Fig. 2 is a vertical sectional view of a main part showing an embodiment of the invention, and Fig. 3 is a diagram showing an embodiment of the invention. 4 is a longitudinal sectional view showing an example of the clamping jig of the present invention, FIG. 5 is an enlarged sectional view of the holding fitting portion of the clamping jig of the present invention, and FIG. 6 is a conventional one. It is a front view showing an example of a clamp jig. 1... Lever, 2... Support part, 3, 4... Plate material, 5, 6... Spacer, 7... Pin, 8... Spring, 9... Bolt, 10... Nut, 11
...Spring, 12...Protrusion.

Claims (1)

[Scope of utility model registration request] A lever having a plurality of concave and convex portions on the operating part at the tip, a support part in which the lever is semi-rotatably supported by a pin, two pieces of plate material with one end fixed to the support part, and the two pieces of plate material. A cylindrical spacer that holds the plates parallel to each other at a predetermined interval, a protrusion fixed to one of the plates, and a spring that biases the concave and convex portion of the lever in a direction in which it comes into contact with the protrusion fixed to one of the plates. and a spring that maintains a tensile force corresponding to the external load of the workpiece and the strength according to the plate thickness, and the clamp is arranged so that it can be changed to any frame position according to the plate size. jig.