JP2954516B2 - Electrode equipment for barrel plating - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an object for housing an object to be plated, rotating the barrel in a state where the object is immersed in a plating solution, and fixing an electrode for supplying power to the object to be plated in the barrel. The present invention relates to an electrode device for barrel plating, which is arranged in a specific manner.

[0002]

2. Description of the Related Art As a prior art for supplying power to an object to be plated housed in a barrel, Japanese Unexamined Utility Model Publication No. 58-124473 has been proposed.
There is a device of the above-mentioned type, which has a configuration in which a plate-like or annular cathode body is provided integrally with the left and right side walls in the barrel in close contact with each other, and electricity is supplied from the outside. As a result, the drawbacks of using lead wires, such as the difficulty of maintaining a constant energized state or the breakage or cutting of the lead wire coating, are eliminated because the lead wire is constantly shaken by the flowing plating object. You can say

However, the cathode body of the present invention is plate-like or annular, and is integrally provided on the left and right side walls of the barrel, so that it rotates together with the rotation of the barrel. Then, power is supplied to the object to be plated at the contact portions at the left and right ends in contact with the rotating cathode body, and the plating process proceeds.
However, since the barrel is disposed in the plating solution, unnecessary plating is performed even on the surface of the cathode body that is not in contact with the object to be plated.

Moreover, in the case of the above-mentioned invention, since the cathode body exposed in the plating solution is supplied with electricity from the outside through the rotating shaft at the center of the barrel and the metal of the bearing portion, the rotating shaft in contact with the plating solution is also plated. This causes a problem that the bearing function is impaired because the weight gradually increases. Therefore, when the barrel according to the above-mentioned invention is used, there is also a disadvantage that the rotating shaft and the cathode body must be frequently inspected and the adhered plating must be removed.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to supply power only to an object to be plated existing in a barrel, and to provide an object to be plated. An object of the present invention is to realize a barrel plating electrode device which hardly receives the action force of the above.

Another object of the present invention is to improve the plating quality by stabilizing the current and voltage values relating to plating,
It is another object of the present invention to improve the durability of the power supply device, thereby facilitating maintenance and preventing a reduction in plating quality.

[0007]

In order to solve the above-mentioned problems, in the present invention, an electrode capable of contacting an object to be plated is formed in a plate shape, and is fixed to a bearing portion side of a barrel and exposed to an inner wall surface exposed in the barrel. Is formed of an insulating material, and a plate-like electrode is fixed to a part of an inner wall surface that can contact a plating object flowing relatively to a rotating barrel so as not to substantially protrude. , The inner wall surface is formed in a circular side plate,
The outer periphery of the side plate and the peripheral edge of the rotating drum arranged outside
Bearings that receive the load of the barrel
Provided on the center axis of the side plate, the bearing sleeve of the bearing
A means of forming with a rubbing resin is taken.

Therefore, since only the plate-shaped electrode comes into contact with the plating solution and the object to be plated and does not contact with the object to be plated, there is no electrode there or it is covered with a cover plate. Does not adhere.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The barrel plating electrode device of the present invention uses a barrel 10 which accommodates an object to be plated therein and rotates while immersed in a plating solution L. The electrode for supplying power to the plating object W is barrel 1.
0 is fixedly arranged.

The barrel 10 may have a hollow container shape rotatable around its axis. For stirring the workpiece W, the cross section perpendicular to the axial direction is a polygon (polygon). It is desirable that In addition, the barrel 10 has a structure provided with a liquid passage means 13 that allows liquid flow when immersed in the electrolytic solution.

Although the barrel 10 in the illustrated embodiment has a hexagonal cross section, it may be pentagonal or other. Further, the illustrated example is formed of an insulating synthetic resin material provided as a large number of liquid passage holes 13.

The barrel 10 has an opening / closing opening 14 through which an object to be plated W is taken in and out. The position and number of the opening and closing opening 14 are arbitrary. Barrel 10 at both ends in the rotation axis X direction
In order to rotatably mount the barrel 10, in the embodiment, a single opening / closing opening 14 corresponding to almost the entire side of the barrel 10 having a polygonal cross section is formed. 15 is an opening and closing plate,
It has a liquid passing means 13 and is detachably fixed to a mounting portion 16 provided at the opening / closing edge.

The barrel 1 is supported at the axial end of the polygon.
In the case of 0, the rotation axis X is set substantially horizontal. Barrel 1
Power transmission means 17 for rotating and driving the barrel 10 is provided at the end of the zero. In the embodiment, the power transmission means 17 is a gear, and meshes with the gear which is the power transmission means 19 of the drive shaft 18.

In a system called a carrier system, which is a type of barrel transport system, the barrel 10 is provided with a side plate 2 at an axial end.
At the portion of the bearing body 22 attached to the support frame 1, it is rotatably suspended by the suspension 23 of the suspension frame 20. Then, it is moved along the transport line.
Is provided, and power can be supplied to the in-barrel electrode by a power supply 24a, a cable 24b, and the like.

An electrode (cathode) 11 for supplying power to the object to be plated W is formed in a plate shape, and can be brought into contact with the object to be plated W flowing relatively in the rotating barrel 10.
It is fixedly located at a lower position in the barrel where it is being deposited.

In the case of the present invention, the electrode 11 is plate-shaped and, at the same time, always occupies a fixed position with respect to the rotating barrel 10 so that power is not supplied except where power is supplied to the object to be plated. Small size and barrel 1
It does not substantially protrude from the inner wall surface 12 of the zero. Almost no protrusion means that the object to be plated W is a plate-like electrode 1
1 (especially the rim, etc.). Therefore, when the edge is shaped obliquely or circularly, it may project.

The plate-like electrode 11 of the embodiment is formed by a barrel side plate 21.
The plate-like electrode 11 is fitted in the concave portion 26 at the lower part of the substrate, and is attached so as to be substantially coplanar. Side plate 21
Is fixed to the bearing body 22 as described above, and the barrel 1
Since the rotation is independent of zero, the plate electrode 11 is arranged at a fixed position. The plate-like electrode 11 has a bearing 22
The terminal 24c at the end of the cable 24b passed through the inside is connected to supply power.

When the state of deposition of the object to be plated W during the flow was investigated so that power was supplied from the plate-shaped electrode 11 only to the object to be plated W in a relatively flowing state by the rotating barrel 10, the result was 2. It has been found that the distribution has an upper limit at the location indicated by the chain line. Therefore, in order to limit the function of the plate-like electrode 11 to a fan-shaped range shown by oblique lines below the chain line, a portion above the plate-like electrode 11 is covered with a cover plate 30, and unnecessary plating is electrodeposited and laminated. I tried to prevent it. As a result, the material is not wasted and the plating work to be laminated is not required.

In the figure, reference numeral 27 denotes a peripheral portion located outside (outer periphery) of the side plate 21, and rotates with respect to the side plate 21. The peripheral portion 27 closes the side surface of the barrel 10 together with the member 28 on the side surface of the barrel using the power transmission means 17. 3
Reference numeral 1 denotes a sleeve attached to the rotary barrel as a bearing of the bearing 22, and 32 denotes a holding member thereof. The sleeve 31 and the bearing body 22 are formed of an insulating material having low friction.

Therefore, with the rotation of the barrel 10, the object W to be plated is inclined and deposited so as to be dragged in the rotating direction (FIG. 2), and the plate-like electrode 11 contacting only with the object W to be plated. Electroplating is carried out by supplying power from the power supply. The operation is the same even if the plate-like electrode 11 is formed into a fan-shaped planar shape, and the cable 24b is extended (covered or buried so as not to protrude) so far.

[0021]

Since the present invention is constructed and operates as described above, the plate electrode 11 is in the electrolytic solution of the barrel 10 in which the plating object W is present, and the power is supplied only to the plating object W. Since it is possible, no material is wasted and the electrode 1
1 has a plate-like shape and hardly protrudes inward of the barrel, so that there is an effect that stable quality can be guaranteed without being damaged by the action force from the plating object or damaging the plating object.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a barrel facility equipped with a barrel plating electrode device according to the present invention.

FIG. 2 is an explanatory sectional view showing the inside of the barrel according to the embodiment.

FIG. 3 is an enlarged side view of that of FIG. 1;

FIG. 4 is an enlarged longitudinal sectional view of a main part.

──────────────────────────────────────────────────続 き Continued from the front page (56) References JP-A-60-89598 (JP, A) JP-A-58-124473 (JP, U) JP-A-48-87319 (JP, U) JP-A-53- 88528 (JP, U) Shokai Sho 59-123166 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) C25D 17/20 C25D 17/12

Claims (5)

(57) [Claims] 1. A barrel plating method in which an object to be plated is housed therein, and the barrel is rotated while the object is immersed in a plating solution, and electrodes for supplying power to the object to be plated are fixedly disposed in the barrel. Electrode device, fixed to the bearing side of the barrel, the inner wall surface exposed inside the barrel is formed of insulating material, and can contact the plating object flowing relatively to the rotating barrel In the position below the inner wall,
Fixing the plate-like electrodes so as not to virtually projecting, inner wall circle
Formed on the side plate of the shape, placed on the outer periphery of the side plate and outside
To prevent abrasion on the peripheral edge of the rotating drum, load the barrel.
A bearing body for receiving weight is provided on the center axis of the side plate, and the bearing body is
An electrode device for barrel plating, wherein a bearing sleeve is formed of a low friction resin . 2. The plate-like electrode has a substantially fan-shaped shape extending downward from the center of the rotating barrel, and has a configuration in which a surface other than a portion for supplying power to an object to be plated is covered with a cover plate. 2. The electrode device for barrel plating according to claim 1. 3. The barrel 10 has circular side plates 21 located at both ends in a substantially horizontal axis direction.
A concave portion formed on the inner lower surface of the side plate, and the plate electrode is fitted and fixed in the concave portion.
Item 9. An electrode device for barrel plating according to Item 1. 4. The barrel 10 is a hollow body having a polygonal cross section for rotating around a horizontal axis, and an opening / closing opening 14 for taking in / out an object to be plated is provided on any side. The electrode device for barrel plating according to claim 1. 5. The plate-like electrode 11 has a surface formed of a barrel 10.
Is substantially flush with the inner wall surface 12 of the
2. The electrode device for barrel plating according to claim 1, wherein the edge of the electrode is shaped so as not to be caught by an object to be plated.