JP2000034600A - Barrel plating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a plating device which is simple in structure and is suitable for plating a small number of workpieces. SOLUTION: A vertically long plating container 7 is fitted attachably and detachably on the rear surface of a rotary board 6 disposed in a frame 1 mounted on a plating tank with the center axis line of rotation of the plating container 7 tilted to a vertical line. In the container 7, the lower part of a cylindrical body 7a, the upper end of which is constituted to be an ontlet/inlet for the workpiece, is provided with a workpiece housing chamber 7b constituted of a resin net, and a plurality of electrodes are arranged along the bottom peripheral surface of the workpiece housing chamber 7b. A contact plate 11a, in which an electrode is disposed on the rotary board 6, forms a rotary switch 11 together with a contact shoe 13, which is disposed on the frame 1. The electrodes, which successively move on the lower side in accordance with the rotation of the plating container 7, are energized with the rotary switch 11. In such a constitution, the rotary switch 11, etc., is allowed to be formed in a position where the switch 11, etc., is not immersed in a plating liq. in the plating tank.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel plating apparatus suitable for plating a very small amount of small work (mainly electronic parts).

[0002]

2. Description of the Related Art A barrel plating apparatus used for plating a small and small amount of a work such as an electronic component is known from, for example, JP-A-7-331497.

[0003]

In this apparatus, an extremely small rotating container a having an opening having an open upper surface with an opening diameter of 70 mm and a depth of 80 mm is formed of an acrylic resin plate or the like. A number of small holes are drilled on the surface and a plurality of electrodes b are arranged along the circumferential direction on the bottom surface of the rotating container a, and furthermore, the work is tumbled and stirred well in the rotating container a, The plating container is immersed in the rotating container a by inclining the rotating container a. For this reason, the work is offset to one corner of the rotary container a, and an electrode that does not contact the work is formed among the electrodes b. When a current flows to the electrode b that does not contact the work, the surface of the electrode b is roughly plated. When the next contact with the work, it comes off and mixes with the work in the rotating container.
When a current flows through the workpiece, there arises a problem that a current as designed in the work does not flow.

[0004] In view of this, a rotating member f described later is used.
Terminal c1 connected to each electrode b disposed along the rotation direction of
And a rotary switch c composed of a conductive plate c2 in contact with a terminal c1 connected to the electrode b rotating downward.
The current is concentrated on the electrode in contact with the workpiece. However, in this case, since the rotary container table e is provided on the base plate d, and the rotary member f provided in the rotary container table e and the rotary switch c are provided, the bearing g of the rotary member f In order to prevent the plating solution from entering the portion where the rotary switch c is provided, a liquid-tight storage chamber h for storing the plating solution must be provided, and there is a problem that the structure becomes complicated. Further, this is small and suitable for plating a small amount of work, but since its internal volume is constant, unless a fixed amount of work suitable for the rotary container is put, it is in accordance with the theory designed for the work. There is a problem that it becomes difficult for the current to flow. An object of the present invention is to solve such a problem.

[0005]

According to a first aspect of the present invention, a mount mounted on a plating tank is provided with a motor and a rotating disk that rotates in conjunction with the motor, and a vertically long surface is provided on the lower surface of the rotating disk. The plating container is detachably mounted with the center axis of rotation of the plating container inclined with respect to the perpendicular, and the container forms a work accommodating chamber formed of a resin net at the lower part of a cylindrical body having an upper end as a doorway for a work. A contact plate provided on the rotating plate to which a plurality of electrodes are disposed along a bottom peripheral surface of the work accommodating chamber, and terminals connected to the respective electrodes are connected; and a cathode provided in a plating tank. A rotary switch is formed by a contact provided on a base connected to the electrode, and the rotary switch is used to plate the rotary switch and the like by energizing the lower electrode sequentially with the rotation of the plating container. Can be placed on the tank Kill. In the invention according to claim 2 of the present application, the work accommodating chamber has a conical shape whose bottom gradually protrudes toward the center, and when the bottom is pushed into the plating container, the bottom protrudes from the periphery of the bottom as a starting point into the plating container. As described above, by using a resin net having flexibility and being able to maintain a fixed shape, the size of the storage chamber can be switched between two stages according to the type and amount of the work. Even if the amount is small, the contact between the workpiece and the electrode can be improved without using a dummy.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the attached drawings. In the figure, reference numeral 1 denotes a mount provided with a motor 2 and a rotating shaft 3 which rotates in conjunction with the motor 2;
A rectangular storage box 1a for storing a motor 2, a rotating shaft 3 driven by the motor 2, a gear 4 on the rotating shaft of the motor 2, and a gear 4 on the rotating shaft 3 meshing with the gear 4. A pair of arms 1c and 1c, each of which includes a conductive arm 1b protruding from the center of one side of the storage box 1a, and a defective electric conductor protruding from both side ends on the other side of the storage box 1a; And a turntable 6 provided on the lower surface of the bottom plate 1a-1 of the storage box 1a. The turntable 6 is attached and supported to the lower part of the rotary shaft 3 projecting from the lower surface of the bottom plate 1a-1 of the storage box 1a. A portion 6a is provided, the upper end of the plating container 7 is inserted into the flange portion 6a, and the plating container 7 is detachable by being fixed to the turntable 6 with a thumb screw 8 screwed in from around the turntable 6. Attach to

The gantry 1 places the conductive arm 1b on a cathode bar A provided in a plating tank (not shown), and mounts the arms 1c, 1c on an anode bar B provided in a plating tank (not shown). It is mounted and supported on a plating tank (not shown).

At this time, the bottom plate 1a of the storage box 1a
The bottom plate 1 is provided so as to be inclined with respect to the horizontal.
The rotating shaft 3 and the rotating disk 6 supported by the a-1 are also provided in a state inclined with respect to the horizontal.

The plating container 7 is provided with a work accommodating chamber 7b formed of a resin net below the cylindrical body 7a having an upper end face as an entrance of the work, and a plurality of electrodes at equal intervals around the work accommodating chamber 7b. 9 were provided. To explain this further, the cylindrical body 7a has an upper part 7a-1 having an inner diameter of about 90 mm, an intermediate part 7a-2 having a taper whose diameter becomes smaller toward the lower part, and a lower part 7a-3 having an inner diameter of about 60 mm. Is provided.

The work accommodating chamber 7b made of a resin net has a cylindrical portion 7b-1 fitted to the lower portion 7a-3 of the cylindrical body 7a,
It is composed of a hexagonal cylindrical portion 7b-2 having a hexagonal cross section connected to a lower portion thereof and extending downward, and a bottom surface 7b-3 having a convex shape gently inclined downward from the periphery toward the center.
As the resin net, a net made of an acrylic resin or the like which has flexibility and can maintain a certain shape is used. When the bottom is pushed into the plating container 7 from the state shown by the solid line in FIG. Starting from the periphery of the bottom, the bottom could be kept protruding into the plating container. That is, the size of the accommodation room 7b can be switched between two levels according to the type and amount of the work.

On the outer surface of the container 7, six metal strips 10 are arranged at equal intervals in the vertical direction, and the lower end of the metal strip 10 is bent along the bottom surface 7b-3. The electrode 9 was fixed to the portion by tightening the screw 10b.
The upper end of the metal strip 10 protrudes upward from the upper end of the container 7, and a leaf spring 10a functioning as a contact extending downward from the upper end of the metal strip 10 is provided inside the metal strip 10 protruding upward. Was.

Reference numeral 11 denotes a contact plate 11a provided on the upper surface of the turntable 6, and a bottom plate 1a of a storage box 1a provided on the gantry 1.
1 shows a rotary switch including a contact 11b protruding from -1. More specifically, the turntable 6 is made of a non-conductive material such as fluororesin, and the upper surface of the turntable 6 has
As shown in FIG. 2, the contact plates 11 a are provided at six intervals in the rotation direction and at equal intervals, and through holes 12 are provided at positions outside the outer edges of the respective contact plates 11 a of the turntable 6. Projection piece 11a projecting from the outer edge of each contact plate 11a
2 is bent along the inner edge of the through hole 12 so as to face the inside of the through hole 12. In addition, the edge of the contact plate 11a is chamfered 11a-1 so that the contact 11b can be easily transferred to each contact plate 11a.

Thus, when the plating container 7 is brought into contact with the lower surface of the turntable 6 and the upper end of the metal band plate 10 provided in the plating container 7 is inserted into the through hole 12, the metal band plate 10 The leaf spring 10a functioning as a provided contact contacts the protruding piece 11a-2.

The contact 11b is connected to the conductive arm 1b provided on the gantry 1 via a lead wire, and is connected to the cathode bar A via the conductive arm 1b.

The contact 11b is slidably mounted in a conductive cylinder 13 which is mounted through the bottom plate 1a-1.
A spring 15 is interposed between the screw lid 14 provided on the upper surface of the cylindrical body 13 and the contact 11b so that the lower surface of the contact 11b contacts the contact plate 11a. At the lower part of the contact 11b, there is provided an enlarged portion 11b-1 having a contact surface wider than the interval between the contact plates 11a in the rotation direction of the turntable 6, and with the rotation of the turntable 6, the front contact plate 11a When the next contact plate 11a comes into contact from the contact state, the front and rear contact plates 1
While maintaining the state of contact with 1a, 11a, the contact 11b was always brought into contact with one of the contact plates 11a.

The metal strip 10 was covered with a resin film so as not to come into contact with the plating solution, and a rubber cap 16 was attached to the tip of the screw 10a so as not to come into contact with the plating solution. Next, the plating operation by the present apparatus will be described. The plating container 7 containing the work is brought into contact with the lower surface of the turntable 6,
When it is fastened and fixed to the turntable 6 with the thumb screw 8, the metal strip 1
0 is inserted into the through hole 12, and the leaf springs 10b provided at the upper end of the metal strip 10 are connected to the contact plate 11a.

Next, the gantry 1 is mounted on the cathode bar A with the conductive arm 1b, and the arms 1c and 1c are mounted on the anode bar B provided on a plating tank (not shown).
The gantry 1 is mounted on and supported by the arm 1b and the arms 1c and 1c in a stable state on the plating tank. Then, each electrode 9 is sequentially connected to the cathode bar A via the contact 11b, and electricity is supplied to the contact plate 11a in contact with the contact 11b via the metal strip 10. In addition, since the plating container 6 is provided with its rotation center inclined, the plating is performed while being stirred with the rotation of the plating container 7.

The work is taken out of the plating container 7 by removing the gantry 1 from the plating tank, loosening the thumb screw 8 and removing the container 7 from the lower surface of the turntable 6.

[0019]

According to the first aspect of the present invention, since the work accommodating chamber is formed of a resin net, the ratio of the opening area is smaller than that of the resin plate having innumerable small holes. A rotating plate that drives the container while increasing the ion concentration of the plating solution in the accommodation chamber by improving the inflow and outflow of the plating solution into and out of the work accommodation room. Rotary switches and the like can be provided at positions that are not immersed in the plating solution, and there is no need to seal them so that they do not touch the plating solution as in the conventional example.
That makes the structure simpler.

According to the invention described in claim 2 of the present application, the size of the accommodation chamber can be switched between two stages according to the type and amount of the work, and thus, when the amount of the work is small, a dummy is used. Without contact, the contact between the work and the electrode can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG. 1;

FIG. 3 is an enlarged sectional side view of a rotary switch section.

FIG. 4 is a cutaway side view of a plating container.

FIG. 5 is a side view showing a conventional example.

FIG. 6 is an enlarged cut-away side view of the rotary container table of FIG. 5;

[Explanation of symbols]

1 base 2 motor
3 rotating shaft 6 rotating plate 7 plating vessel
9 electrode 10 metal strip 11a contact plate 1
1b Contact

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[Procedure amendment]

[Submission date] May 18, 1999 (1999.5.1
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003]

In this apparatus, an extremely small rotating container a having an opening having an open upper surface with an opening diameter of 70 mm and a depth of 80 mm is formed of an acrylic resin plate or the like. Numerous small holes are drilled on the surface and a plurality of electrodes b are arranged along the circumferential direction on the bottom surface of the rotating container a, and moreover, the work is tumbled and stirred well in the rotating container a, The rotating container a is inclined and immersed in the plating tank. For this reason, the work is offset to one corner of the rotary container a, and an electrode that does not contact the work is formed among the electrodes b. When a current flows to the electrode b that does not contact the work, the surface of the electrode b is roughly plated. When the next contact with the work, it comes off and mixes with the work in the rotating container.
When a current flows through the workpiece, there arises a problem that a current as designed in the work does not flow.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

According to the first aspect of the present invention, a plating container is immersed in a plating solution in a plating tank.
Barrel for plating the work contained in the container
In the plating apparatus, the plating container is
Work consisting of a resin net at the bottom of the cylinder used as the entrance to the
A motor and a rotating disk that rotates in conjunction with the motor are provided on a mount that is formed in a vertically long shape with the accommodation chamber mounted thereon and that is mounted on the plating tank , and the upper end of the plating container is placed on the lower surface of the rotating disk. Contact
Then, the center axis of rotation of the plating vessel is inclined with respect to the perpendicular.
State removably attached to, a plurality of electrodes disposed along the bottom peripheral surface of the workpiece accommodating chamber to face the respective contacts continuous with respective electrodes on the upper end of the plating container and the rotary
When a plating container is attached to the bottom of the board, each contact
A contact plate for contact is provided, and the contact plate and a contact provided on a pedestal connected to the cathode electrode provided in the plating tank are used to supply current to the lower electrode sequentially with the rotation of the plating container.
By forming the rotary switch, the rotary switch or the like can be provided at a position in the plating tank that does not come into contact with the plating solution . The invention according to claim 2 of the present application provides a work accommodation room
The bottom, a convex shape that gradually protrudes downwardly accordance leading to Chuo
Exhibited, so the bottom of the bottom periphery when pressing the bottom portion in the plating vessel starting projects into the plating vessel, flexible is formed of the and resins network may maintain a certain shape has, the accommodation The size of the room depends on the type and quantity of the workpiece.
It is possible to switch to a step, so that even if the amount of the work is small, the contact between the work and the electrode can be improved without using a dummy.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

[0019]

According to the first aspect of the present invention, the plating container has an opening at the upper end as a work entrance.
A work accommodating chamber composed of resin net was attached to the lower part of the cylinder.
By being formed vertically, it is composed of a resin net through the cylindrical body.
Since the work is easily inserted into the work storage chamber , and the work storage chamber is made of a resin net, the ratio of the opening area can be increased as compared with the case where a myriad of small holes are provided in the resin plate. Making the plating solution enter and exit the work storage chamber well,
A rotating plate that drives the container while performing good plating by increasing the ion concentration of the plating solution in the storage chamber;
And it can be provided at a position not find a rotary switch or the like in the plating solution, it is not necessary to seal to touch them in a plating solution as in the prior art, correspondingly structure is easy <br/> single . Moreover, each contact connected to each electrode is plated
Face the top of the vessel and place the plating container on the underside of the turntable.
The contact plate where each contact comes in contact with the
The plating container is attached to the lower surface of the turntable.
Each contact is in a state where it can be energized,
A rel plating apparatus is obtained.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

According to the invention described in claim 2 of the present application, the size of the accommodation room can be switched between two stages according to the type and amount of the work, and the accommodation room can be made smaller.
In, without the use of a dummy amount of work even in small amounts,
Good contact between the workpiece and the electrode can be achieved.

Claims (2)

[Claims] A pedestal mounted on a plating tank is provided with a motor and a rotating disk rotating in conjunction with the motor. A vertically long plating container is provided on a lower surface of the rotating disk, and a rotation center axis of the plating container is perpendicular to a vertical line. The container is detachably attached by being inclined with respect to the container.
A work accommodating chamber formed of a resin net is formed at the lower part of the cylindrical body having an upper end as an entrance of the work, and a plurality of electrodes are provided along a bottom peripheral surface of the work accommodating chamber, and A contact plate provided on the turntable to which a series of terminals are connected, and a contact provided on a frame connected to a cathode electrode provided in a plating tank form a rotary switch, and the rotary switch is used to rotate a plating container. A barrel plating apparatus characterized in that a current is sequentially supplied to the lower electrodes. 2. The bottom of the work accommodating chamber has a convex shape gradually projecting downward as it reaches the center, and when the bottom is pushed into the plating container, the bottom protrudes from the periphery of the bottom as a starting point into the plating container. 2. The barrel plating apparatus according to claim 1, wherein the barrel plating apparatus is made of a resin net having flexibility and a constant shape.