JP3389221B2 - Barrel plating equipment - Google Patents

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 for plating loose small objects.

[0002]

2. Description of the Related Art A barrel plating apparatus is one in which a relatively small object to be plated is put in a cylindrical container which is rotated in a circumferential direction in a plating bath for plating. A large number of small holes and slits are formed so as to prevent the plated object from coming off.

There are two types of barrel plating equipment for electrolytic plating and one for electroless plating. In the case of electrolytic plating, an anode is provided in a plating bath and a cathode is introduced into a cylindrical container. However, in order to improve the plating efficiency, a conductive medium smaller than the object to be plated may be put in the cylindrical container.

There are various shapes of the cylindrical container such as a cylindrical shape, a polygonal cylindrical shape, and a barrel shape. The cylindrical container is wholly or partially immersed in a plating bath, and a plurality of plating baths are formed in one plating bath. The cylindrical container may be immersed. In addition, the cylindrical container,
It is often connected to a rotary drive source such as a motor installed outside the plating bath by a rotational force transmitting means such as a belt or a gear and rotated about a horizontal rotary shaft. The cylindrical container may be rotated manually by turning a handle or the like.

[0005]

In the above-described barrel plating apparatus, the plating adheres to the wall of the cylindrical container and narrows the hole or slit opening of the container. When this opening is narrowed to a certain extent, the plating solution does not pass through the container badly and the plating efficiency is lowered. Therefore, the cylindrical container is replaced with a new one. In particular, when the object to be plated is a small, small, small object such as an IC chip, the holes and slits of the cylindrical container are formed to be very small, and these openings are easily blocked by the adhesion of plating. , The container replacement cycle becomes very short.

Is the tubular container after use thrown away?
Although the adhered plating is removed and reused, even if it is reused, the removal of the adhered plating on the edges of many holes and slits has a problem that it takes a lot of time and labor.

Therefore, an object of the present invention is to make it possible to easily reuse a cylindrical container of a barrel plating apparatus in a short time.

[0008]

In order to solve the above problems, the present invention provides a cylindrical container which is rotated in a circumferential direction in a plating bath and is provided with an inlet closed by an opening / closing lid. In a barrel plating apparatus for plating a small-sized small object charged from the charging port by passing a plating solution into a container,
At least one window is provided on the side wall portion of the cylindrical container, and a window cover for covering the window can be attached and detached from the inside of the cylindrical container.
The convex step on the outer circumference of the window inside the container
Push it against the stepped seat provided on the
The window cover is provided with a mesh, a small hole or a slit that allows the plating solution to pass therethrough.

That is, a window is provided on the side wall of the cylindrical container,
It can be attached to and detached from the inside of the tubular container in this window.
By providing a mesh, a small hole or a slit that allows the plating solution to pass through on the window lid that is installed so that it will not come out to the outside, the window that allows the plating solution to pass through is narrowed by the adhesion of the plating. Only the lid was replaced with a new one so that the cylindrical container could be reused easily in a short time.

Since the removed window cover after use has a smaller size and a simpler shape than the cylindrical container, it is possible to easily perform the work of removing the adhered plating and regenerate it easily. .

The input port is provided on the side wall of the cylindrical container, and the opening / closing lid is locked to the input port at the peripheral edge thereof.
The opening / closing lid is provided with at least one window, and the window lid for covering the window is made detachable from the inside of the cylindrical container and
A step provided on the inner surface of the container on the inner circumference of the window with a convex step provided on the circumference
It is pressed against a seat and attached so as not to come out of the cylindrical container, and a mesh, a small hole or a slit through which a plating solution is passed is provided in the window lid, whereby The aperture ratio can be increased and the plating efficiency can be further improved. The charging port may be provided on the entire surface or a part of the side wall of the tubular container, and may be provided over a plurality of side surfaces when the tubular container has a rectangular tube shape.

Means for locking the opening / closing lid to the insertion opening at the peripheral edge is provided with at least a pair of projecting portions at each of the opposing peripheral edge portions of the opening / closing lid, and the peripheral portions provided with these projecting portions are in contact with each other. A laterally long ring-shaped buckle is rotatably pivotally attached to each side of the charging port to be contacted, and each buckling is rotated to fit into each of the projecting parts, and each projecting part is fitted to the projecting port. By tightening and locking the lid, it is possible to firmly lock the opening / closing lid to the insertion opening without loosening. Further, by firmly tightening the opening / closing lid around the insertion opening, it is possible to prevent warping of the opening / closing lid and deformation of the insertion opening.

The projecting portion can be provided at either or both of the peripheral edge of the opening / closing lid along the axial direction of the cylindrical container, the peripheral edge of the opening / closing lid along the circumferential direction, and both of the charging port and the opening / closing lid. When the side length is long, it is possible to lock one peripheral portion with a plurality of overhanging portions by buckles.

By making the window cover detachable from the inside of the cylindrical container and preventing it from coming out to the outside of the cylindrical container, it is possible to prevent the window cover from dropping into the plating bath.

By forming the inner surface of the corner portion, to which the side wall portion of the cylindrical container and the bottom wall portions at both ends are connected, into a smooth curved surface, a minute object to be plated is clogged in the corner portion, resulting in poor plating. Can be prevented.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. This barrel plating apparatus is for electrolytic plating. As shown in FIGS. 1 and 2, a support member 2 is suspended on the upper edge of a plating tank 1 and is provided above the plating bath of the support member 2. On the support base 3,
A motor 4 and a speed reducer 5, which are rotational drive sources, are attached,
A cylindrical container 7 made of acrylic resin, which is horizontally placed on the left and right side frames 6 hung in the plating bath and into which a small small object to be plated is placed, is rotatably supported by the left and right bearing members 8. Has been done. The motor 4 and the speed reducer 5 are covered with a cover 9 so as not to splash the plating solution.

The cylindrical container 7 has a gear 10 formed on the outer periphery of the bottom wall at one end, and is attached to the output shaft of the speed reducer 5 via a gear 11 attached in the middle of one side frame 6. The rotational force is transmitted from the gear 12. Further, the anode rod 13 is suspended in the plating bath, and the conductive wire 15 to which the cathode terminal 14 is attached is
It is introduced into the cylindrical container 7 through the center holes 17 provided in the bearing members 8 through the left and right pipes 16.

As shown in FIGS. 3 to 5, the tubular container 7 is formed in a hexagonal tube shape, and an inlet 18 for an object to be plated is provided on one side wall of the hexagonal tube. 1
9 is attached. A knob 20 is provided on the opening / closing lid 19, and protruding portions 21 are provided on both sides of the knob 20. The opening / closing lid 19 is provided with each of the projecting portions 21 as the charging port 1
It is fastened with a laterally long ring-shaped buckle 22 pivotally attached to both side portions of 8 and is locked to the insertion port 18.

A hole 23 into which the bearing member 8 is fitted is provided in the central portion of both bottom walls of the cylindrical container 7, and the inner surface of the corner portion connecting the side wall portion and both bottom wall portions has a corner radius of 2
4 has a smooth curved surface.

The five other side walls provided with the inlet 18 and the opening / closing lid 19 are provided with two rectangular windows 25a and 25b in the longitudinal direction of the cylindrical container 7, respectively. ing. The windows 25a and 25b have window covers 26a and 26, respectively.
b is detachably attached to each of these window covers 26a,
Lattice-shaped crosspieces 27 are formed on 26b.
A mesh 28 that allows the plating solution to pass through is provided integrally with 7. The size of the mesh 28 is such that a small object to be plated or a conductive medium placed in the cylindrical container 7 does not fall off.

Each of the window lids 26a and 26b is attached and detached from the inside of the tubular container 7, and as shown in FIG. 6, a convex step portion 29 provided on the rear surface side of the outer periphery of the window lids 25a and 25b is provided. Pressed against the step 30 provided on the inner surface of the container,
It does not come out of the cylindrical container 7. Also,
Claws 31 are formed on the front sides of the respective edges of the window lids 26a and 26b, and these claws 31 are locked to a step seat 32 provided on the outer surface side of the container inside the windows 25a and 25b. Each window cover 2
6a and 26b are prevented from coming off.

In the above-described embodiment, the tubular container has a hexagonal tubular shape, but it may have another polygonal tubular shape, a cylindrical shape, or a barrel shape. Further, although the opening of the window lid through which the plating solution is passed is formed of a mesh, it may be formed of a small hole or a slit.

Further, a gear of another tubular container can be engaged with a gear of another tubular container to arrange a plurality of tubular containers in the plating bath, and a rotational force is transmitted to the tubular container by a V-belt or the like. You can also do it.

The barrel plating apparatus according to the present invention is
Of course, it can be applied to electroless plating.

[0025]

As described above, according to the barrel plating apparatus of the present invention, the side wall of the cylindrical container is provided with a window, and the window can be attached to and detached from the inside of the cylindrical container and can be removed to the outside of the cylindrical container. Na
A mesh that allows the plating solution to pass through the window cover,
Since either a small hole or a slit is provided, when the opening through which these plating solutions pass is narrowed due to the adhesion of plating, only the window lid is replaced with a new one, and the cylindrical container can be simplified in a short time. Can be reused.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a barrel plating apparatus.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of the cylindrical container of FIG.

FIG. 4 is a front sectional view of FIG.

5 is a side sectional view of FIG.

FIG. 6 is an enlarged sectional view showing a mounting portion of the window cover of FIG.

[Explanation of symbols]

1 plating tank 2 Support members 3 support 4 motor 5 reducer 6 side frame 7 Cylindrical container 8 Bearing members 9 cover 10, 11, 12 gears 13 Anode rod 14 Cathode terminal 15 Conductive wire 16 tubes 17 Center hole 18 slot 19 Open / close lid 20 picks 21 Overhanging part 22 buckles 23 holes 24 corner radius 25a, 25b windows 26a, 26b Window cover 27 bars 28 mesh 29 Step 30 steps 31 nails 32 steps

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-202999 (JP, A) JP-A-62-184098 (JP, A) Actual opening 5-10471 (JP, U) Actual opening Sho-60- 189564 (JP, U) Actual opening Sho 61-16370 (JP, U) Actual opening Sho 61-202466 (JP, U) Registered utility model 3052465 (JP, U) Actual public 1-11738 (JP, Y2) Actual public Hei 4-44622 (JP, Y2) S. 59-2122 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) C25D 17/20

Claims (4)

(57) [Claims] 1. A cylindrical container, which is rotated in a circumferential direction in a plating bath, is provided with a charging port closed by an opening / closing lid, and a plating solution is passed through the cylindrical container so that the cylindrical container is charged from the charging port. In a barrel plating apparatus for plating small objects, at least one window is provided on the side wall of the tubular container, and a window lid that covers this window is removable from the inside of the tubular container .
A convex step on the outer circumference is provided on the inner surface of the container on the inner circumference of the window.
Press it against the column seat and do not pull it out of the cylindrical container.
The barrel plating apparatus is characterized in that the window lid is provided with a mesh, a small hole, or a slit that allows the plating solution to pass therethrough. 2. The charging port is provided in a side wall of the cylindrical container, and the opening / closing lid is locked to the charging port at a peripheral edge thereof.
The opening / closing lid is provided with at least one window, and the window lid for covering the window is made detachable from the inside of the cylindrical container and
A step provided on the inner surface of the container on the inner circumference of the window with a convex step provided on the circumference
The mesh according to claim 1, wherein the window cover is provided with a mesh, a small hole, or a slit through which the plating solution is passed, by being pressed against a seat so as not to come out of the cylindrical container . Barrel plating equipment. 3. A means for locking the opening / closing lid to the insertion opening at the peripheral edge portion is provided with at least a pair of projecting portions at respective opposing peripheral edge portions of the opening / closing lid, and each peripheral edge portion provided with these projecting portions. A laterally long ring-shaped buckle is rotatably pivotally attached to each side portion of the charging opening with which the abutting member is abutted, and each buckle is pivotally fitted into each of the protruding portions, and each of the protruding portions is The barrel plating apparatus according to claim 2, wherein the barrel plating apparatus is fastened and locked to the charging port. 4. A barrel plating apparatus according to any one of the tubular side wall portion and a corner portion inner surface which the bottom wall portions at both ends are connected to the container, to form a smooth curved surface according to claim 1 to 3.