JP2002249898A - Plating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plating device arranged a number of cylindrical vessels in a plating bath with a simple constitution. SOLUTION: The plurality of cylindrical vessels 8 are attachably and detachably attached around a rotating shaft of a rotating member 7 which is rotatively driven in the plating bath, at the same time, a conductive wire 16 of cathode side is connected with a conductive part which is disposed on the rotating member 7, the conductive part is connected with cathodes 26 in the respective cylindrical vessels 8 via attachable and detachable attaching parts of the respective cylindrical vessels 8 and, thereby, a number of cylindrical vessels 8 are arranged with a simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plating apparatus for plating an object to be plated in a container immersed in a plating bath.

[0002]

2. Description of the Related Art As a plating apparatus for plating an object to be plated in a container immersed in a plating bath, a basket-shaped container is suspended in a plating bath and the basket-shaped container is vibrated. There is a so-called barrel plating apparatus in which the substrate is rotationally driven in a plating bath in a circumferential direction. A barrel plating apparatus that rotates a cylindrical container has better plating uniformity and is easier to automate than one that vibrates a basket-shaped container. I have.

[0003] These plating apparatuses are classified into those for electrolytic plating and those for electroless plating. In the case of electrolytic plating, an anode is provided in a plating bath, and a cathode is provided in a container of the object to be plated. Is provided.

[0004]

In the above-described barrel plating apparatus, since it is necessary to transmit a rotational force to each cylindrical container, the structure of the drive system is complicated, and a large number of cylindrical containers are connected to one plating bath. There is a problem that is difficult to place inside.

In the case of electrolytic plating, the cathode in the individually rotating cylindrical container must be electrically connected to the conductive wire on the cathode side, so that the structure of the conductive system is complicated, and a large number of cylindrical containers are required. Arrangement becomes more difficult.

An object of the present invention is to provide a plating apparatus which can arrange a large number of cylindrical containers in a plating bath with a simple structure.

[0007]

In order to solve the above-mentioned problems, a plating apparatus according to the present invention is provided with a rotating member which is driven to rotate in a plating bath, and a plating member is provided around a rotating shaft of the rotating member. A configuration is adopted in which a plurality of cylindrical containers into which objects are charged are removably attached, and these cylindrical containers are provided with any of meshes, small holes, or slits through which a plating solution passes.

That is, by providing a rotating member that is driven to rotate in the plating bath, and by detachably mounting a plurality of cylindrical containers into which the objects to be plated are charged around the rotating shaft, a simple driving system is provided. With the configuration, a large number of cylindrical containers can be arranged in the plating bath.

The plating solution is an electrolyte, an anode is provided in the plating bath, a cathode is provided in each of the cylindrical containers, and a conductive portion for connecting a cathode-side conductive wire to the rotating member is provided.
By connecting this conductive portion and the cathode in each of the cylindrical containers via a detachable mounting portion of each of the cylindrical containers, the plating apparatus for electrolytic plating also has a simple configuration of the conductive system, A number of cylindrical vessels can be placed in the plating bath.

[0010] By making the conductive wire on the cathode side a flexible conductive wire wound in a spiral coil shape, it is possible to prevent the conductive wire from being twisted due to the rotation of the rotating member.

By providing the cathode along the inner peripheral surface of each of the cylindrical containers, the elongated rod-shaped object to be plated can be easily brought into contact with the cathode, and the plating efficiency can be increased.

[0012] The means for detachably attaching the cylindrical container is provided with a plurality of frames around a rotation axis of the rotating member,
By fitting the cylindrical container into these frames, the cylindrical container can be easily attached and detached, and the cylindrical container can be stably held on the rotating member. The cylindrical container may be fitted into the frame from either the axial direction or the radial direction of the rotating member.

[0013] At least one of the frame surfaces of the frame is provided with any of a mesh, a small hole or a slit through which a plating solution passes, and the outer peripheral surface of the cylindrical container fitted into the frame and covered with the frame surface is provided. By opening it and introducing the plating solution into these cylindrical containers, the opening of the cylindrical container covered with this frame surface is also used as an input port for the object to be plated, and a separate input port and its opening / closing lid Can be eliminated.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
An embodiment of the present invention will be described. FIG. 1 to FIG.
An embodiment will be described. This plating apparatus is for electrolytic plating. As shown in FIGS. 1 and 2, a support member 2 is suspended from an upper edge of a plating tank 1, and a support member provided above the plating bath of the support member 2 is provided. A motor 4 and a speed reducer 5 serving as a rotation drive source are attached to the base 3, and horizontally mounted on left and right side frames 6a and 6b suspended in a plating bath, and a rotating member 7 made of polypropylene is rotatably supported. A plurality of cylindrical containers 8 made of acrylic resin into which an object to be plated is put are attached to the rotating member 7. In addition,
The motor 4 and the speed reducer 5 are covered with a cover 9 so that the plating solution does not splash.

The rotating member 7 includes left and right circular shaft end plates 1.
0a, 10b are joined by four sets of frame members 11 radially arranged around the rotation axis, and a rectangular cylindrical container 8 is detachably fitted into each frame member 11 from the axial direction. I have. A gear 12 is provided on the outer periphery of one shaft end plate 10a.
Is formed, and the rotating member 7 is configured to transmit the rotational force from the gear 14 attached to the output shaft of the speed reducer 5 via the gear 13 attached in the middle of the side frame 6a.

An anode rod 15 is suspended in the plating bath, and a conductive wire 16 on the cathode side is connected to a pipe 17 in the plating bath.
And is connected to the rotating member 7. The conductive wire 16 is a flexible wire wound in a spiral coil shape, so that it does not twist with the rotation of the rotating member 7.

As shown in FIGS. 3 and 4, a conductive plate 18 made of copper is embedded on the outer surface of the shaft end plate 10a of the rotating member 7, and the bearing member 19a is rotatably supported by the side frame 6a. Is attached so as to cover the conductive plate 18. A conductive terminal 20 screwed to the conductive plate 18 is embedded in the center of the bearing member 19a, and the conductive wire 16 on the cathode side is connected to the conductive terminal 20. Also,
A conductive terminal 21 screwed to the conductive plate 18 protrudes from the inner surface of the shaft end plate 10a at a portion where the frame members 11 are connected.

As shown in FIGS. 5 and 6, each of the cylindrical containers 8 has an opening on one side for charging an object to be plated having an elongated rod shape. Along with this, a conductive member 23 having a conductive plate 22 embedded therein is attached. The tubular conductive terminal 24 provided on the tip side of the conductive member 23 is fitted into the conductive terminal 21. Further, two conductive terminals 25 screwed to the conductive plate 22 protrude from the inner surface side of the conductive member 23, and these conductive terminals 25 are fitted into the side surfaces of the cylindrical container 8 to form a cylindrical container. 8 are connected to two cathodes 26 provided along the inner peripheral surface of the cathode 8.

On the other hand, as shown in FIGS. 3 and 4, a window 27 for inserting each cylindrical container 8 is provided in the shaft end plate 10b of the rotating member 7, and an outer surface of the shaft end plate 10b is provided on the outer side of the shaft end plate 10b. Is provided with a stopper plate 28 for retaining the cylindrical container 8 inserted in each window 27. This stopper plate 2
Numeral 8 is screwed to the center of the shaft end plate 10b and rotatably fitted to a bearing member 19b rotatably supported by the side frame 6b. After each cylindrical container 8 is inserted,
Each of the windows 27 is rotated to a position to close the window 27, and the bearing member 19b is rotated.
As a result, it is fastened and fixed to the shaft end plate 10b.

The rotating member 7 rotates in the direction indicated by the arrow in FIG. 4, and each set of frame members 11 is provided with a mesh 29 through which the plating solution passes, on the frame surface facing the direction of rotation. After each of the cylindrical containers 8 is charged with the object to be plated from the opened side, the opened side is turned to each frame surface to which the mesh 29 is attached, and is inserted into each frame member 11 from each window 27. .

In the above-described embodiment, the mesh 29 is attached to each frame surface of each of the frame members 11, but the mesh 29 is attached to two or more frame surfaces, and the cylindrical container is turned to these frame surfaces. 8 may be fully or partially opened. The mesh 29 can also be attached to the cylindrical container 8 side.

In addition, although the elongated rod-shaped object to be plated is put into each cylindrical container 8, it is needless to say that a plate-shaped or block-shaped object to be plated can also be charged. The inside of the container 8 may be partitioned vertically and horizontally, and different types of objects to be plated may be charged into each partition section. Different types of objects to be plated can also be charged for each cylindrical container 8.

FIGS. 7 to 12 show a second embodiment. This plating apparatus is also used for electrolytic plating.
As shown in FIG. 8 and FIG. 8, the acrylic resin cylindrical container 30 for storing the object to be plated and the polypropylene rotary member 31 to which the cylindrical container 30 is attached are different from those of the first embodiment. The other parts are the same as in the first embodiment, and are therefore denoted by the same reference numerals as in FIGS.

As shown in FIGS. 9 and 10, the rotating member 31 is composed of five pipe members 33 in which left and right circular shaft end plates 32a and 32b are arranged at regular intervals in the circumferential direction around the rotating shaft. Each of the pipe members 33 has a cylindrical tubular container 30 radially attached thereto. Also,
On the outer periphery of one shaft end plate 32a, a gear 34 to which rotational force is transmitted from the gear 14 of the output shaft of the speed reducer 5 via the gear 13 is formed.

Bearing members 35a and 35b are attached to outer surfaces of the shaft end plates 32a and 32b, respectively, and rotatably support the rotating member 31 on the side frames 6a and 6b. A conductive plate 36 made of copper is embedded in the outer surface of the shaft end plate 32a.
6, a conductive terminal 37 screwed to a conductive plate 36 is embedded in the center thereof, and the conductive wire 16 on the cathode side is connected to the conductive terminal 37.

A conductive plate 38 screwed to the conductive plate 36 is provided on the inner peripheral surface of each pipe member 33 along the axial direction, and each of the cylindrical members provided at two locations in the axial direction on the outer peripheral surface. A conductive terminal 40 screwed to the conductive plate 38 protrudes inside the protrusion 39.

As shown in FIGS. 11 and 12, each of the cylindrical containers 30 is provided with a number of small holes 41 through which a plating solution passes, and screw caps 42 attached to both end surfaces. The screw cover 42 is removed, and an elongated bar-shaped object to be plated is introduced.

On the outer peripheral surface of each cylindrical container 30, two projections 43 are provided in the axial direction.
3, cylindrical conductive terminals 44 are electrically connected to two cathodes 45 provided along the inner peripheral surface of the cylindrical container 30.

By fitting each of the projections 43 into each of the cylindrical projections 39 of the pipe member 33, a cylindrical conductive terminal 44 is formed.
Are also fitted into the conductive terminals 40, so that the conductive wire 16 on the cathode side is conducted to the cathode 45 of each cylindrical container 30 via the rotating member 31. Cylindrical container 30
Of the tubular member 39 of the pipe member 33.
An O-ring 46 is mounted on the outer periphery of each protrusion 43 to seal the fitting portion.

In each of the embodiments described above, the plating apparatus is for electroplating. However, the plating apparatus according to the present invention can be applied to electroless plating.
In addition, the cylindrical containers into which the objects to be plated are charged are mounted radially at equal radial positions in a row in the axial direction of the rotating member, but the cylindrical containers are mounted in multiple rows in the axial direction of the rotating member, Can be changed in a zigzag pattern and attached radially.

[0031]

As described above, the plating apparatus of the present invention is provided with a rotating member which is driven to rotate in a plating bath, and is provided with a plurality of cylindrical containers around which the object to be plated is put. Since it is detachably attached, a large number of cylindrical containers can be arranged in the plating bath with a simple drive system configuration, and a large number of types of objects to be plated can be efficiently plated.

In the plating apparatus for electrolytic plating, a conductive portion for connecting a conductive wire on the cathode side to the rotating member is provided.
Since this conductive portion and the cathode in each cylindrical container are connected via a detachable mounting portion of each cylindrical container, the conductive system has a simple configuration, and a large number of cylindrical containers are plated. Can be placed in the bath.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing a plating apparatus according to a first embodiment.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a longitudinal sectional front view showing an enlarged main part of FIG. 1;

FIG. 4 is a partially cutaway side view of FIG. 3;

FIG. 5 is a longitudinal sectional front view showing the cylindrical container of FIG. 1;

FIG. 6 is a longitudinal sectional side view of FIG. 5;

FIG. 7 is a partially cutaway front view showing a plating apparatus according to a second embodiment.

FIG. 8 is a side view of FIG. 7;

9 is an enlarged longitudinal sectional front view of a main part of FIG. 7;

FIG. 10 is a partially cutaway side view of FIG. 9;

11 is a partially cutaway front view showing the cylindrical container of FIG. 7;

FIG. 12 is a longitudinal sectional side view of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plating tank 2 Support member 3 Support stand 4 Motor 5 Reduction gear 6a, 6b Side frame 7 Rotating member 8 Cylindrical container 9 Cover 10a, 10b Shaft end plate 11 Frame member 12, 13, 14 Gear 15 Anode rod 16 Conducting wire 17 Pipe 18 Conductive plate 19a, 19b Bearing member 20, 21 Conductive terminal 22 Conductive plate 23 Conductive member 24, 25 Conductive terminal 26 Cathode 27 Window 28 Stopper plate 29 Mesh 30 Cylindrical container 31 Rotating member 32a, 32b Shaft end plate 33 Pipe Member 34 Gear 35a, 35b Bearing member 36 Conductive plate 37 Conductive terminal 38 Conductive plate 39 Cylindrical projection 40 Conductive terminal 41 Small hole 42 Screw cap 43 Projection 44 Conductive terminal 45 Cathode 46 O-ring

Claims (6)

[Claims] 1. A rotating member which is rotatably driven in a plating bath is provided, and a plurality of cylindrical containers into which an object to be plated is charged are detachably attached around a rotating shaft of the rotating member. A plating apparatus provided with a mesh, a small hole, or a slit through which a plating solution passes in a container. 2. The method according to claim 1, wherein the plating solution is an electrolytic solution, an anode is provided in the plating bath, and a cathode is provided in each of the cylindrical containers.
A conductive part for connecting a conductive wire on the cathode side to the rotating member is provided, and the conductive part and the cathode in each of the cylindrical containers are connected via a detachable mounting part of each of the cylindrical containers. 2. The plating apparatus according to 1. 3. The plating apparatus according to claim 2, wherein the conductive wire on the cathode side is a flexible conductive wire wound in a spiral coil shape. 4. The plating apparatus according to claim 2, wherein the cathode is provided along an inner peripheral surface of each of the cylindrical containers. 5. The means for detachably attaching the cylindrical container includes a plurality of frame portions provided around a rotation axis of the rotating member, and the cylindrical container is fitted into these frame portions. 5. The plating apparatus according to any one of 4. 6. An outer periphery of a cylindrical container which is provided with at least one of a mesh, a small hole, and a slit through which plating solution passes on at least one frame surface of the frame portion, and which is fitted into the frame portion and covered with the frame surface. 6. The plating apparatus according to claim 5, wherein a surface is opened to introduce a plating solution into these cylindrical containers.