JPH0420986B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for plating a plate-shaped workpiece having a hole in the center, such as a floppy disk.

(Prior Art) Conventionally, when plating a disk-shaped workpiece such as a floppy disk material, the following holding device holds the workpiece and performs a series of processes. In other words, the conventional holding device has a large number of holders installed on the frame or the pillars that make up the main body, and one workpiece is attached to each holder, and many workpieces are held in a state where they are lined up on the same plane. It's summery.

(Problems to be Solved by the Invention) However, according to the above-mentioned conventional structure, since the workpieces are arranged on the same plane, the workpieces occupy a large space, which leads to the problem that the device becomes large and the volume of the processing tank increases. There is a problem that the number of workpieces processed per unit is small. Another problem is that it takes time and effort to attach and detach the work to the holder.
Furthermore, since the workpiece remains stationary in the processing tank, there is a problem that the contact efficiency with the processing liquid is low and the processing time becomes long. Further, there are also problems in that the processing liquid does not drain easily from the work after processing, and therefore different types of processing liquids tend to mix, and that the water washing process takes a long time.

The present invention seeks to solve these problems.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides the following features when plating a plate-like workpiece having a hole in the center:
A shaft holding drive device used to hold and transport this plate-like workpiece in a plating bath, the shaft holding drive device being used to hold the plate-like workpiece by inserting it into a hole in the plate-like workpiece. shaft,
It has an arm for holding the shaft horizontally in the plating treatment tank, rotatably and detachably at both ends, and a drive mechanism for rotating the shaft held by this arm. Both ends are inserted from above into upwardly opening notches formed in the arm and held by the arm, and this drive mechanism has a driven gear that rotates integrally with the shaft and a drive gear that interlocks with the drive source. This shaft is characterized in that it has a plurality of large diameter parts smaller than the hole diameter of the plate-shaped workpiece and a plurality of small diameter parts alternately along its longitudinal direction.

(Function) According to the above configuration, a large number of workpieces are held in an overlapping state by the shaft at intervals in the longitudinal direction thereof, so that a large number of workpieces can be arranged in a narrow space. Further, by rotating the shaft using the drive holding device, the workpiece is also rotated in a vertical position. Therefore, the efficiency of contact with the processing liquid is improved, and the liquid can be drained easily. Furthermore, the workpiece can be easily attached to and removed from the shaft by simply passing it around the shaft.

(Example) In FIG. 2, which is a schematic side view, a large number of processing tanks T consisting of a pre-processing tank, a plating tank, a post-processing tank, etc.
They are lined up in rows. A transport robot (not shown) transports the shaft holding drive device 1 in the longitudinal direction of the processing tank T group, and also transports the shaft holding drive device 1 in the longitudinal direction of the processing tank T group.
The shaft holding drive device 1 is raised and lowered relative to the shaft holding drive device 1.

The shaft holding drive device 1 includes a motor 2, an arm 3, an intermediate gear 4, and a drive gear 5. The motor 2 is of a variable speed type and is provided at the top of the device 1. The arm 3 is approximately L when viewed from the side as shown in the figure.
It extends downward from the lower part of the motor 2, and the lower part protrudes forward (or backward). intermediate gear 4
A plurality of shafts are arranged approximately along the arm 3, and each support shaft is attached to the arm 3. The intermediate gears 4 mesh with each other, and the intermediate gear 4 at the upper end meshes with a pinion 6 on the output shaft of the motor 2 from the side, and the intermediate gear 4 at the lower end meshes with the drive gear 5 from below.

A driven gear 7 meshes with the driving gear 5 from above. A driven gear 7 is attached to the end of a horizontal shaft 8. A notch 9 is provided at the top of the tip of the arm 3, and the shaft 8 is rotatably inserted into this notch 9 and supported horizontally. As shown in FIG. 3, which is an enlarged partial diagram, the notch 9 is connected to the arm 3.
It enters obliquely downward from the horizontal upper edge of the tip toward the upper end of the drive gear 5, and is inclined so that the intermediate gear 4 approaches as it goes downward. A bearing 10 is formed at the edge of the notch 9 from a resin such as Teflon. The drive gear 5 is configured to rotate in the direction of arrow R, and the shaft 8 driven by the gear 5 is configured to rotate in a direction that does not come out of the notch 9.

As shown in FIG. 1, which is a schematic perspective view, a pair of arms 3 having notches 9 are provided, and both arms 3 support both ends of the shaft 8. Further, the driven gear 7 is provided only at one end of the shaft 8, and the drive gear 5 and intermediate gear 4 for driving the driven gear 7 are provided only on one arm 3.

The shaft 8 is made of synthetic resin, and has a large number of small diameter portions 11 spaced apart from each other in the longitudinal direction at portions other than both ends. Each small diameter portion 11 holds a workpiece W (only a portion of which is shown) such as a floppy disk material. The workpiece W is, for example, an aluminum disk having a hole 12 in the center, and the inner circumference of the hole 12 is hooked onto the small diameter portion 11 . The inner diameter of the hole 12 is larger than the outer diameter of the large diameter portion 13 (portion other than the small diameter portion 11) of the shaft 8. Therefore, it is possible to latch the work W from the end of the shaft 8 opposite to the driven gear 7 to each of the small diameter parts 11 through the circumference of the large diameter part 13, and by reversing the procedure, the work W can be hooked onto the shaft 8 one after another. It can be removed from

In the embodiment shown in FIG.
Although the entire diameter is uniform, a structure as shown in FIG. 4 may be adopted instead of this structure. In FIG. 4, large diameter portions 13 are formed only on both sides of each small diameter portion 11, and both ends of the shaft 8 are formed to have the same thickness as the small diameter portions 11. The large-diameter portions 13 shown in FIG. 4 are each made of a cylindrical component, and each is fitted and fixed to the main body of the thin shaft 8. As shown in FIG.

The above device is used for electroless plating, and therefore the shaft 8 is made of synthetic resin; however, when the device is used for electrolytic plating,
The shaft 8 is made of metal, and a power source for the negative electrode is connected to the shaft 8.

The operation of the above device will be explained.

A large number of workpieces W are mounted on the shaft 8 prior to processing work. In this operation, the shaft 8 is held horizontally with a suitable holder (not shown), etc., and in this state, each small diameter part 11 is passed around the large diameter part 13.
This is done by attaching the work W to the. The shaft 8 with the workpiece W mounted thereon is attached to the arm 3 manually (or by a transfer device). This operation is extremely simple, as it can be completed by simply fitting both ends of the shaft 8 into the notches 9 from above.

When the installation of the shaft 8 is completed, the entire shaft holding drive device 1 is transported by the transport robot,
As shown in FIG. 2, workpieces W are sequentially immersed in various processing tanks T. In the processing tank T, a shaft 8 is rotated by the motor 2 via an intermediate gear 4, a driving gear 5, and a driven gear 7, and the workpiece W also rotates in the same direction with a delay with respect to the shaft 8.
Therefore, the workpiece W is always in contact with fresh processing liquid, and the efficiency of contact between the workpiece W and the processing liquid is increased. Furthermore, since the workpiece W rotates while maintaining a vertical posture,
When the work W is pulled up from each processing tank T, the processing liquid quickly flows down from the work W, and the processing liquid can be easily drained.

When a series of plating processes are completed in this manner, the shaft 8 is removed from the arm 3 by hand or the like, and the works W are sequentially extracted from the shaft 8. Also, during the process, the shaft 8 is removed from the arm 3 for inspection of the plating process, etc.
may be temporarily removed. The task of removing these arms 3 is also extremely simple, as it is only necessary to lift the arms 3 and remove them from the notches 9.
Furthermore, the work for removing the workpiece W after the work is completed can be done extremely easily in the same way as when the workpiece is attached.

(Effects of the Invention) As described above, according to the present invention, a large number of works W are arranged facing each other at intervals in the longitudinal direction of the shaft 8, so that the space occupied by the works W is reduced. As a result, the apparatus can be downsized and the number of workpieces processed per volume of the processing tank can be increased. Also, workpiece W is shaft 8.
Since the workpiece W can be attached and detached by simply passing it around the work W, attachment and detachment of the workpiece W is also easy. Furthermore, since the workpiece W rotates together with the shaft 8, the contact efficiency of the workpiece W with the processing liquid can be increased, and the processing time can be shortened and the finished state can be improved. Moreover, work W
Since it rotates in a vertical position, it is possible to accelerate the draining of the liquid after processing, prevent deterioration of the processing liquid due to mixing of different types of processing liquids, and shorten the time for post-processing such as washing with water.

Further, in the present invention, both ends of the shaft 8 are inserted into the notches 9 of the arm 3 from above and held by the arm 3, and the drive mechanism for rotating the shaft 8 is a driven gear 7 that rotates integrally with the shaft 8. It has a drive gear 5 that interlocks with the motor 2. Therefore, in order to remove the workpiece W from the shaft 8 and the shaft 8 from the arm 3, the driven gear 7 and the driving gear 5 must be disengaged and at the same time, the shaft 8 must be pulled upward so as to be pulled out from the notch. Just lift it. In addition, in order to hold the shaft 8 on the arm 3, the opposite can be done. Therefore, it is possible to attach and detach the shaft 8 and, in turn, to attach and detach the workpiece W very easily and reliably, and from this point of view, it is possible to improve the plating processing capacity.

Note that the shape of the arm 3 and the direction of the notch 9 can be changed in various ways; for example, the notch can be formed vertically.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view of the embodiment, Fig. 2 is a schematic side view of the embodiment, Fig. 3 is an enlarged schematic diagram of Fig. 2, and Fig. 4 is a schematic perspective view of the embodiment.
The figure is a schematic front view of another embodiment. DESCRIPTION OF SYMBOLS 1... Shaft drive holding device, 8... Shaft, 11... Small diameter part, 12... Hole of workpiece, 13
...Large diameter section, W...Work.

Claims (1)

[Claims] 1. When plating a plate-shaped workpiece having a hole in the center, hold this plate-shaped workpiece in a plating bath,
and a shaft holding drive device used for transporting the workpiece, the shaft holding drive device being used to hold the shaft horizontally in the plating processing tank. It has an arm for holding it rotatably and detachably at both ends thereof, and a drive mechanism for rotating a shaft held by this arm, and both ends of this shaft have an upper opening cutout formed in the arm. The drive mechanism is inserted into the notch from above and held by the arm, and this drive mechanism has a driven gear that rotates integrally with the shaft and a drive gear that interlocks with the drive source. A shaft holding drive device characterized by having a plurality of large diameter portions and a plurality of small diameter portions that are smaller than the hole diameter of a plate-shaped workpiece alternately.