JPH0116772Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] The invention relates to electroplating. Specifically, the invention involves placing small items such as bolts and washers in a barrel case, immersing them in a plating bath, and then removing the barrel case. The present invention relates to a plating device that thoroughly applies plating to the surface of an article by rotating it.

[Conventional technology]

Conventionally, in this type of plating device, the cathode lead wire was inserted directly into an insertion hole formed in the axial center of the rotating shaft of the barrel case.

[Problem that the invention attempts to solve]

In the conventional structure described above, in which the cathode lead wire was inserted directly into the shaft hole, the lead wire rotated as the barrel case rotated, or the cathode terminal rotated due to the reaction of the twisted barrel case. away from the workpiece,
This has disadvantages in that the plating action is impaired and the lead wires are prematurely worn and damaged due to twisting of the lead wires and sliding contact with the rotating shaft.

The purpose of the present invention was made in view of the above points, and the purpose of the present invention is to enable the cathode terminal of the lead wire to contact the workpiece well while the barrel case is rotating, and to perform a good plating process. Moreover, it is an object of the present invention to provide a plating device that can suppress lead wire wear and the like as much as possible.

[Means for solving problems]

The technical means of the plating device adopted in this invention is that both ends of the cylindrical barrel case to be immersed in the plating tank are supported pivotably, and the cathode side is inserted into the insertion hole drilled in the core of the rotating shaft of the barrel case. In particular, in a plating device in which a lead wire is inserted, a hollow body rotatable relative to the rotary shaft is fitted inside the insertion hole of the rotary shaft, and the cathode side is inserted into the hollow body. This is the point where the lead wire is inserted.

[Effect]

When a workpiece to be plated is placed inside a barrel case and the barrel case is immersed in a plating tank, the workpiece comes into contact with a lead wire inserted into the barrel case through an insertion hole drilled in the rotating shaft of the barrel case. serves as a cathode, and the object to be treated is plated.

Since the lead wire is inserted through a hollow body loosely fitted into the insertion hole of the rotating shaft, only the rotating shaft rotates while remaining stationary or almost stationary with respect to the rotation of the barrel case. Even if the body rotates with the rotation of the rotating shaft, the rotation is relatively reduced due to the resistance of sliding contact with the lead wire, and wear on the lead wire due to sliding contact is reduced.

In addition, since the hollow body can remain stationary or almost stationary, the lead wire does not get twisted, and the barrel rotates while the cathode terminal of the lead wire is in good contact with the article. The articles to be processed can be thoroughly plated, and the plating can be completed quickly and with good quality.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a cross-sectional view of a plating device A in which a workpiece 2 such as a bolt or washer placed in a barrel case 1 is immersed in a galvanizing tank 3. A zinc plate 4 is used as an anode and is brought into contact with a lead wire 5. It is configured to perform galvanizing by electrolytically depositing a zinc film on the surface of the workpiece 2 using the workpiece 2 as a cathode.

The barrel case 1 is made up of a cylindrical peripheral wall 6 with a polygonal cross section and left and right side walls 7, and a lid 8 that can be freely opened and closed and has a width extending between the left and right side walls 7 and 8 is attached to a part of the peripheral wall 6.
The peripheral wall 6 including the lid 8 is made of synthetic resin and has a lattice shape, thereby forming a large number of small holes that communicate with each other inside and outside. Rotating shafts 9, 9 are protruded from the left and right side walls 7, and the machine frame 11 mounted on the rails 10 disposed on the left and right sides of the plating tank 3 is rotated via these rotating shafts 9, 9. Power is transmitted from a chain 14, which is rotated by a drive source (motor) not shown, to a sprocket 13 attached to one end of an input shaft 12 that is freely mounted on the machine frame 11. The barrel case 1 is configured to rotate by power transmission to gears 16, 16 formed on the outer peripheries of the left and right side walls 7, 7 of the barrel case 1, which mesh with gears 15, 15 of the shaft 12.

The rails 10, 10 are cathodes, and the lead wires 5, 5 are pulled out from the machine frame portion placed on the rails 10, 10, and inserted into the insertion holes 17 drilled in the rotating shafts 9, 9 of the barrel case 1. It extends into the barrel case 1 via.

The rotating shaft 9 is connected to the side walls 7, 7 as shown in FIG.
Bearing parts 18, 1 are welded to the side walls 7, 7 in a state of protruding outward from the machine frame 11, and are suspended from the upper part of the machine frame 11.
Hollow rotors 19, 19 are fitted into the insertion holes 17 drilled in the shaft cores of the rotating shafts 9, 9, and a stopper ring 20 for preventing the rotors from coming off is attached to the ends of the hollow rotors 19, 19. .

Then, the lead wires 5, 5 are introduced into the barrel case 1 through the rotor 19, and
A relatively large terminal 21 that also serves as a weight is attached to the tip of the lead wire 5. If the terminal 21 of the lead wire 5 is made heavier, it will not float up and the contact with the object to be processed will be better.

In addition, 22 in the figure is a hook attached to the machine frame 11 for moving the barrel case 1 by an elevator.

According to the above configuration, the barrel case 1 containing the object 2 to be treated is immersed in the plating tank 3,
When the barrel case 1 is rotated by a drive source (not shown) with current flowing through the zinc plate 4, the lead wire 5
All of the objects 2, 2 to be treated overlapped with each other through the object 2 that comes into contact with the object 2 become cathodes, and a zinc coating is formed on the outer surface of the objects 2, 2 to be treated except for the overlapping part between the objects 2, 2 to be treated. As the barrel case 1 rotates, the objects 2 are mixed together.
The contact portion between the objects 2, 2 to be treated moves, and uniform plating is applied to the entire object.

Since the lead wire 5 is introduced into the barrel case 1 through the insertion hole 17 of the rotating shaft 9 via the rotor 19, the lead wire 5 is always connected to the workpiece 2 without rotating together with the rotating shaft 9. The barrel case 1 can be rotated in a state of contact, and damage caused by wear at the insertion portion to the rotating shaft 9 can be suppressed as much as possible.

FIG. 4 shows another embodiment, in which a rotary shaft 9 protruding from the side wall 7 of the barrel case 1 is rotatably inserted into the bearing portion 18, and a hole 17 formed in the rotary shaft 9 is inserted. , a mounting flange 19a at one end
The flange 19a is fixed to the bearing portion 18 with bolts 23. In this way, the lead wire 5 inserted into the hollow part of the cylindrical body 19 will not rotate with the rotation of the rotating shaft 9.

Note that the rotor and the cylindrical body form a hollow body 19.
Collectively called.

In the above example, galvanization was explained, but it can also be applied to copper, nickel, tin, brass, and any other type of electroplating.

[Effect of idea]

As described above, the present invention particularly provides a hollow body that is rotatable relative to the rotating shaft and is fitted into the insertion hole formed in the core of the rotating shaft of the barrel case. Since the cathode lead wire is inserted through it, the lead wire will not rotate as the rotating shaft rotates, and the end of the lead wire will not separate from the workpiece and impair the plating function, and it will not twist or rotate. We have never heard of lead wires being worn out or damaged due to friction with the shaft.
It has the advantage that it can be used for a long period of time, and the ends of the lead wires can come into good contact with the object to be processed, so that good plating can be quickly performed.

[Brief explanation of the drawing]

The drawings show an embodiment of the plating device according to the present invention, in which Fig. 1 is a partially cutaway front view, Fig. 2 is a side view of the main part, Fig. 3 is an enlarged sectional view of the main part, and Fig. 4 is a cross-sectional view of the main part. The figure is an enlarged sectional view of a main part showing another embodiment. 1... Barrel case, 3... Plating tank, 5...
Lead wire, 9... Rotating shaft, 17... Insertion hole, 19
...Hollow body.

Claims (1)

[Scope of utility model registration request] Both ends of the cylindrical barrel case 1 to be immersed in the plating tank 3 are supported pivotally, and the lead wire 5 on the cathode side is inserted into the insertion hole 17 bored in the axial center of the rotating shaft 9 of the barrel case 1. In the plating device,
The rotation shaft 9 is inserted into the insertion hole 17 of the rotation shaft 9.
A plating device characterized in that a hollow body 19 is fitted into the hollow body 19 and the lead wire 5 on the cathode side is inserted through the hollow body 19.