JP6768953B2 - Electroplating equipment for small parts - Google Patents

Description

The present invention relates to an electroplating apparatus, and particularly to an electroplating apparatus for small parts.

In general, there are two types of electroplating, rack plating and barrel plating. Rack plating is an electroplating method in which a part is hooked on a jig to deposit a plating layer, and is generally used for electroplating a large-sized part. Barrel plating is generally used for small parts that cannot be hooked or are difficult to hook due to their shape and size. Barrel plating is also called barrel electroplating. By putting a predetermined number of small parts into a dedicated barrel and depositing various metal plating layers or alloy plating layers on the surface of the parts by the indirect conductive method in a rotating state. , Serves the purpose of surface protection, decoration or functioning. Barrel plating is significantly different from rack plating in the plating method for plated parts, and while rack plating is performed with the parts separated, barrel plating is performed by collecting or separating a large number of parts. In this process, a mixing cycle of parts occurs, and rack plating is performed with the parts completely exposed, whereas barrel plating is performed on a closed barrel (on the wall plate). It is done at a low solution concentration in (with pores). Due to the difference in the plating method for parts, barrel plating has two drawbacks: a drawback due to the mixing cycle and a structural defect due to barrel plating. The above-mentioned drawbacks adversely affect the production efficiency of barrel plating and the improvement of product quality, and the advantages of barrel plating cannot be fully utilized.

Further, in the conventional barrel plating technology, the barrel is connected to the drive device, the work to be plated is loaded into the barrel, and then the work to be plated is put into the electroplating tank to operate the drive device to reverse the work to be plated. In the prior art, the surface electroplating of a large number of needle-like or flaky microelectronic parts is usually performed in the electroplating barrel, which is to bring them into contact with the electrolyte to cause an electrochemical action. There are many types of plating barrels, most of which are driven by a horizontal drive, which has the problems of complex structure, difficult solution repeatability, low electroplating efficiency and high maintenance costs. Often have.

In addition, an electroplating barrel is arranged at the lower end of the drive shaft, an electroplating tank equipped with an anode is rotationally driven, and the centrifugal force during the rotational drive of the electroplating barrel causes the electroplating barrel to flow from the inside to the outside, and further to the outside. The electroplating barrel is fixed to the lower end of the drive shaft and cannot be moved or replaced, so the electroplating process of automatically moving between tanks is not possible.

Therefore, in order to solve the above-mentioned problems of the prior art, it is necessary to provide an improved electroplating apparatus for small parts.

In view of the above, a main object of the present invention is to arrange the drive device below the electroplating tank and rotate the electroplating barrel by engaging the engaging portion and the drive motor to rotate the electroplating barrel in this way. The tank switching work of moving from one electroplating tank to another can be easily carried out, and the forced vortex forming blade at the bottom of the electroplating barrel speeds up the repetition of the electroplating liquid, which is a drawback due to the mixing cycle and the barrel. It is an object of the present invention to provide an electroplating apparatus for small parts, which eliminates structural defects of plating and further improves the electroplating speed and efficiency of small parts.

In order to achieve the above object, the present invention is an electroplating apparatus for small parts including at least one electroplating unit, wherein the at least one electroplating unit includes a moving frame, a cylindrical body, a rotating shaft, and a rotating shaft. The electroplating barrel having an engaging portion, the first end of the rotating shaft is provided on the cylindrical body, and the engaging portion is provided on the bottom of the cylindrical body, and the electroplating liquid are stored and the electroplating is performed. An electroplating apparatus for small parts, including an electroplating tank for immersing the barrel and a drive for rotating the engaging portion and rotating the electroplating barrel in conjunction with each other to generate centrifugal force. provide.

In one embodiment of the present invention, the drive has a drive motor that is engaged with an engaging portion of the electroplating barrel to intermittently drive and rotate the cylinder.

In one embodiment of the present invention, the moving frame is one fixing plate, two side plates attached to both sides of the fixing plate, and two auxiliary levers provided between the two side plates. It includes two auxiliary levers in which the cylinder is located above the lever and a rotary joint that is pivotally attached to the fixing plate and integrally combined with the second end of the rotating shaft.

In one embodiment of the invention, the moving frame further comprises two cathode holders provided on both sides of the bottom of the fixing plate and electrically connected to a cathode ring.

In one embodiment of the present invention, the cylindrical body has a base, a peripheral wall and an upper lid, the base is coupled to the peripheral wall, the cathode ring is formed in the peripheral wall, and the rotation axis is moved from the base to the upper lid. It is connected to and extends to the outside.

In one embodiment of the invention, the electroplating apparatus further comprises a tray provided in the drive motor to receive the liquid leaked from the electroplating tank.

As described above, the electroplating barrel is arranged below the electroplating tank, and by engaging the engaging portion with the drive motor, the electroplating barrel is rotated in conjunction with the electroplating barrel. Not only can it be easily moved or replaced, but also the electroplating speed and efficiency of small parts can be improved, and the subsequent maintenance cost is reduced by simplifying the structure of the electroplating equipment for small parts. Let me.

It is a schematic diagram of the partial structure of the preferred first embodiment of the electroplating apparatus for small parts according to the present invention. It is a schematic diagram of the partial structure of the preferred first embodiment of the electroplating apparatus for small parts according to the present invention. It is a perspective view of the local structure of a suitable second embodiment of the electroplating apparatus for small parts according to this invention. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is a schematic diagram of the two electroplating tanks shown in the preferred second embodiment of the electroplating apparatus for small parts according to the present invention.

The following description of each embodiment illustrates specific feasible embodiments of the present invention with reference to the drawings. Further, the upper, lower, top, bottom, front, rear, left, right, inside, outside, side surface, periphery, center, horizontal, horizontal direction, vertical direction, vertical direction, axial direction, radial direction, and maximum described in the present invention. Orientation terms such as top or bottom layer refer only to the direction based on the drawing. Therefore, the terms used are for the purpose of explaining and understanding the present invention and are not intended to limit the present invention.

1 and 2 show suitable first electroplating devices for small parts according to the present invention for electroplating or chemically plating various small parts such as chip resistors, inductors, capacitors, connectors, precision parts. One embodiment is shown. The electroplating apparatus for small parts includes a base body 101 and one or more electroplating units 102. In the present invention, the detailed structure, assembly relationship, and operating principle of each unit will be described in detail later.

Further, as shown in FIGS. 1 and 2, in the electroplating apparatus for small parts, the electroplating unit 102 is provided on the base main body 101, and each electroplating unit 102 has an electroplating barrel 2 and electricity. Includes a plating tank 3, a drive 4, and a moving frame 5. In another embodiment, a plurality of electroplating units 102 may be provided on the base body 101, and the present invention is not limited to this embodiment.

Further, as shown in FIGS. 1 and 2, the electroplating barrel 2 includes a cylinder 21, a rotating shaft 22, an engaging portion 23, and a current transmission layer 24, and the first end 221 of the rotating shaft 22 is a cylinder. 21 is provided, and the engaging portion 23 is provided at the bottom of the cylindrical body 21. Further, the cylindrical body 21 has a base 211, a peripheral wall 212, and an upper lid 213, the boss of the base 211 is engaged with the peripheral wall 212, a cathode ring 210 is formed in the peripheral wall 212, and the upper lid 213 is attached to the peripheral wall 212. It is covered to define an internal space (not shown), and a current transmission layer 24 is provided on the base 211 of the cylindrical body 21 and is connected to the upper lid 213 from the base 211 and extends outward.

Further, as shown in FIGS. 1 and 2, the electroplating tank 3 is a rectangular container, a partition plate 103 is provided inside, and an electroplating liquid is housed above the partition plate 103, and the electroplating barrel 2 Can be immersed in the electroplating tank 3, and one or more anode baskets 103 can be immersed in the electroplating tank 3.

Further, as shown in FIGS. 1 and 2, the drive 4 is provided below the bottom of the electroplating tank 3, drives the engaging portion 23 to rotate, and rotates the electroplating barrel 2 in conjunction with each other. The drive motor 4 has a drive motor 41 and an electrode joint 42, and the drive motor 41 is a DC drive motor, for example, one holding claw of the engaging portion 23 is one concave groove of the drive motor 41. It is engaged with the engaging portion 23 of the electroplating barrel 2 by being engaged with, and the cylindrical body 21 is rotated by interlocking with the engaging portion 23. The electrode joint 42 is provided in the drive motor 41 and is electrically connected to the cathode. Further, the electroplating barrel 2 further has a cathode conductor 25 provided in the engaging portion 23 and in electrical contact with the electrode joint 42.

Further, as shown in FIGS. 1 and 2, the moving frame 5 is attached to the base body 101, moves in the base body 101, and is located at the top of the electroplating tank 3 to move the moving frame 5. The electroplating barrel 2 can be taken out from the electroplating tank 3 and provided in another electroplating tank (not shown). Further, the second end 222 of the rotating shaft 22 is pivotally attached to the moving frame 5, and the engaging portion 23 is located below the first end 221. Further, the moving frame 5 has one fixing plate 51, two side plates 52, two positioning blocks 53, two auxiliary levers 54, and one lid 55, and the fixing plate 51 has one fixing plate 51. The second end 222 of the rotating shaft 22 is pivotally attached, the two side plates 52 are attached to both sides of the fixing plate 51, the two alignment blocks 53 are attached to both sides of the fixing plate 51, and the side plates 52 on both sides. The alignment blocks 53 on both sides are aligned and fixed to the side plates 52, respectively, and two auxiliary levers 54 are provided between the side plates 52, and the cylindrical body 21 is above the auxiliary levers 54. Positioned, the lid 55 is fixed to the fixing plate 51 by being integrally screwed into the first end 221 of the rotating shaft 22.

Further, as shown in FIGS. 1 and 2, the base body 101 has an elevating sheet 7, a moving frame 5 is provided on the elevating sheet 7, and the moving frame 5 is electroplated by the elevating sheet 7. It is driven to move between the immersion position close to and the preparation position away from the electroplating tank 3.

Further, a cathode ring 210 is attached to the inner side wall of the peripheral wall 212 of the cylindrical body 21 of the electroplating barrel 2, and the cathode ring 210 is connected to the cathode conductor 25 in the engaging portion 23 and electrically connected to the electrode joint 42. The small parts in the cylindrical body 21 may be moved to the surface of the cathode ring by the centrifugal force during the rotation of the electroplating barrel 2.

The current transmission layer 24 is made of titanium metal, titanium plating, or a titanium spray material, the cylindrical body 21 is made of a plastic material, and the space between the current transmission layer 24 and the cylindrical body 21 is made of a plastic material. An intermediate layer (not shown) is provided.

According to the above structure, the drive 4 is arranged below the bottom of the electroplating tank 3, and the engaging portion 23 and the drive motor 41 are engaged with each other to intermittently rotate the electroplating barrel 2 and the cathode. The surface of the small part can be electrically connected to the electrode joint 42, and at the same time, the small part in the cylindrical body 21 is moved to the surface of the cathode ring by the centrifugal force during the rotation of the electroplating barrel 2. The effect of evenly electroplating is obtained.

As described above, by arranging the drive 4 in the electroplating tank 3 and engaging the engaging portion 23 with the drive motor 41 to rotate the electroplating barrel 2 in conjunction with each other, the electroplating barrel 2 Can be easily moved and replaced, and the electroplating speed and efficiency of small parts can be improved. Furthermore, since the electroplating device for small parts has a simple configuration, the subsequent maintenance cost is reduced. To.

3, FIG. 4 and FIG. 5 show a preferred second embodiment of the electroplating apparatus for small parts according to the present invention, with the same unit names and drawings as those of the preferred first embodiment described above. Although numbers are used, these two examples differ in the following features: Since the moving frame 5 can be moved by an external device such as a robot arm, the electroplating barrel 2 can be moved from one electroplating tank 3 to another electroplating tank 3', and the electroplating barrel 2 is a peripheral wall. Further having a power line guide ring 26 provided in the cylindrical body 21 at intervals from the 212, the moving frame 5 has one fixing plate 51, two side plates 52, two auxiliary levers 54, and two grips. A member 56, one rotary joint 57, and two cathode holders 58 are included, side plates 52 are attached to both sides of the fixing plate 51, auxiliary levers 54 are provided between the side plates 52 on both sides, and the cylindrical body 21 is Located above the auxiliary lever 54, the gripping members 56 are provided on both sides of the top surface of the fixing plate 51 at intervals, and the rotary joint 57 is pivotally attached to the fixing plate 51 and is the second of the rotating shaft 22. Attached integrally to the end 222, the cathode holders 58 are provided on both sides of the bottom of the fixing plate 51 and are electrically connected to the cathode ring 210 by a rotating shaft 22 via a cathode wire 59. Further, the bottom of the cylindrical body 21 is provided with forced vortex forming blades for accelerating the repetition of the electroplating liquid, the drive motor 41 is provided below the bottom of the electroplating tank 3, and the electroplating apparatus is driven. It further has a tray 43 provided between the motor 41 and the bottom of the electroplating tank 3 to receive the liquid leaking from the electroplating tank 3.

According to the above structure, the cylindrical body 21 and the rotating shaft 22 can be removed from the moving frame 5 at the same time by loosening the rotary joint 57, and the cathode holders 58 on both sides of the bottom of the fixing plate 51 come into electrical contact with each other. , It is electrically connected to the cathode ring 210, and when the fixing plate 51 moves, the energization is cut off. Further, when the cathode ring 210 accelerates to a predetermined number of revolutions, a small part (object to be plated) in the cylindrical body 21 is brought into close contact with the cathode ring 210 by centrifugal force to energize, and electroplating is performed. When the power is cut off, the cathode ring 210 is decelerated to a low rotation speed, and the small parts (objects to be plated) in the cylindrical body 21 fall to the bottom of the cylindrical body 21 due to gravity and mix, and then the small parts (plated). After the objects) are mixed, the cathode ring 210 accelerates to a predetermined rotation speed, and thus low-speed mixing and accelerated electroplating of small parts (objects to be plated) are intermittently performed after low-speed mixing and accelerated electroplating. As a result, the effect of uniformly electroplating the surface of the small part (object to be plated) can be obtained.

Although the present invention has been described in the related Examples, the above Examples are merely preferred examples of the present invention. The disclosed examples do not limit the scope of the present invention. Rather, any modification or equivalent configuration included in the claims and scope is included in the scope of the present invention.

21 Cylindrical body 210 Cathode ring 212 Circumferential wall 22 Rotating shaft 25 Cathode conductor 26 Power line guide ring 4 Drive 42 Electrode joint 51 Fixing plate 52 Side plate 54 Auxiliary lever 57 Rotary joint 59 Cathode wire

Claims (6)

An electroplating apparatus for small parts that includes at least one electroplating unit.
The at least one electroplating unit
Moving frame and
An electroplating barrel having a cylinder, a rotating shaft and an engaging portion, the first end of the rotating shaft being provided on the cylindrical body and the engaging portion being provided on the bottom of the cylindrical body.
An electroplating tank that stores the electroplating liquid and immerses the electroplating barrel,
A driver arranged below the electroplating tank and having a drive motor ,
Only including,
An electroplating apparatus for small parts, characterized in that the electroplating barrel is rotated by engaging the engaging portion with the drive motor . The moving frame is a fixing plate, two side plates attached to both sides of the fixing plate, and two auxiliary levers provided between the two side plates, and the cylindrical body is located above the auxiliary levers. The small size according to claim 1, further comprising two auxiliary levers and a rotary joint for passing cathode current , which is pivotally attached to the fixing plate and integrally combined with the second end of the rotating shaft. Electroplating equipment for parts. The electroplating for a small component according to claim 2 , wherein the moving frame further comprises two cathode holders provided on both sides of the bottom of the fixing plate and electrically connected to the cathode ring. apparatus. The cylindrical body has a base, a peripheral wall, and an upper lid, the base is coupled to the peripheral wall, the cathode ring is formed in the peripheral wall, and the rotating shaft is connected from the base to the upper lid to the outside. The electroplating apparatus for small parts according to claim 3 , characterized in that it is extended. It is equipped with another electroplating tank that stores the electroplating liquid and immerses the electroplating barrel.
The electroplating apparatus for small parts according to any one of claims 1 to 4, wherein the moving frame moves the electroplating barrel to the other electroplating tank. The electroplating apparatus for small parts according to any one of claims 1 to 5, wherein the cylindrical body and the rotating shaft of the electroplating barrel can be simultaneously removed from the moving frame by a rotary joint.

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