TWI648434B - Electroplating device for small parts - Google Patents

Abstract

A small part electroplating device includes one or more electroplating units. Each electroplating unit has an electroplating drum, an electroplating tank, a driver, and a moving frame. The driver is arranged in the electroplating tank to drive the electroplating. The drum rotates intermittently. The moving rack is combined on the top of the plating tank. By moving the moving rack, the plating drum can be detached from the plating tank and placed in another plating tank. Multiple plating tanks can be expanded to achieve automatic continuous production. the goal of.

Description

   Plating device for small parts   

The present invention relates to a plating device, and more particularly to a plating device for small parts.

There are usually two methods of electroplating, one is rack plating and the other is barrel plating. Hang plating is a plating method in which parts are mounted on a hanger for plating deposition, and is generally used for electroplating of large-sized parts. For small parts that cannot or cannot be hung due to factors such as shape and size, barrel plating is generally used. Barrel plating, also known as drum plating, is to place a certain number of small parts in a dedicated drum and deposit various metal or alloy coatings on the surface of the parts in an indirect conductive manner under rolling conditions to achieve the purpose of surface protection, decoration or functionality . Compared with rack plating, the plating method of barrel-plated parts has changed greatly. Rack plating is performed in the state of separate packaging of parts, and barrel plating is performed in a state where parts are concentrated and separated at times. In the process, the mixing cycle of the parts is generated; in addition, the rack plating is performed in a state where the parts are completely exposed, and the barrel plating is performed in a closed (though there are holes in the wall plate) and the solution concentration is low. The change of the plating method of the parts brings two major defects to barrel plating, namely the defects caused by the mixing cycle and the structural defects of barrel plating. The above defects have a serious impact on the improvement of barrel plating production efficiency and product quality, so that the advantages of barrel plating cannot be brought into full play.

Further, the current barrel plating technology is to connect the drum to a driving device. After loading the workpiece to be plated in the drum, the driving device is then placed in the electroplating tank to turn the workpiece to be plated, which promotes its electrolysis. Electrolyzation occurs when the liquid is fully contacted. Due to the surface plating of many needle-like or sheet-like tiny electronic product parts, it is usually carried out in a plating drum. There are many types of plating drums in the prior art. These electroplating rollers generally have the problems of complicated structure, difficult solution replacement, low electroplating efficiency and high maintenance cost.

In addition, another type of electroplating drum is provided at the lower end of the driving shaft, so that the electroplating tank equipped with the anode can be rotationally driven, and the centrifugal force acting when the electroplating drum is rotationally driven is discharged from the inside of the electroplating drum to the outside and It flows into the interior from the outside, but the plating drum is fixed at the lower end of the drive shaft, and cannot be transferred and exchanged, so the plating process of the automatic transfer and replacement tank cannot be achieved.

Therefore, it is necessary to provide an improved electroplating device for small parts to solve the problems existing in the conventional techniques.

The main object of the present invention is to provide a plating device for small parts, which uses the driver to be set under the plating tank, and drives the plating drum to rotate through the engagement part and the driving motor to make the plating drum rotate. It is easy to move from one electroplating tank to another electroplating tank to carry out the changing and replacing operation.

To achieve the above object, the present invention provides a plating device for small parts, including at least one plating unit; each plating unit includes a moving frame, a plating drum, a plating tank, and a driver; the plating drum has a cylinder, A rotating shaft and an engaging portion, wherein A first end is disposed on the cylinder, the engaging portion is disposed on a bottom of the cylinder; the plating tank contains a plating solution to soak the plating drum; and the driver is disposed in the plating tank for driving The engaging portion rotates to drive the electroplating drum to rotate to generate centrifugal force.

In one embodiment of the present invention, the driver has a driving motor for engaging with the engaging portion of the electroplating drum to drive the cylinder to rotate.

In one embodiment of the present invention, the moving frame has a fixed plate, two side plates, two auxiliary rods, and a rotary joint. The side plates are combined on two sides of the fixed plate, and the auxiliary rods are disposed on the side plates. In the meantime, the cylinder is positioned above the auxiliary rod, and the rotary joint is pivotally connected to the fixing plate for combination with the second end of the rotating shaft.

In an embodiment of the present invention, the moving frame further has two cathode holders, which are disposed on two sides of a bottom of the fixed plate for electrically connecting with a cathode ring.

In one embodiment of the present invention, the cylinder has a base, a surrounding wall, and an upper cover. The base is combined with the surrounding wall. The cathode wall is formed in the surrounding wall. The rotating shaft is connected to the upper cover from the base. Extend outward.

In one embodiment of the present invention, the electroplating device further has a leakage tray, which is disposed on the driving motor and used for receiving the liquid leaked from the electroplating tank.

As described above, by using the driver to be installed under the plating tank and driving the plating drum to rotate through the engagement portion and the driving motor, the plating drum is not only easily moved and replaced, but also can be improved. The plating speed and efficiency of small parts, and the simple structure of the plating device for small parts makes subsequent maintenance costs lower.

101‧‧‧ seat

102‧‧‧Plating unit

103‧‧‧ bulkhead

2‧‧‧Plating roller

21‧‧‧Cylinder

211‧‧‧base

212‧‧‧ around the wall

213‧‧‧Top

210‧‧‧ cathode ring

22‧‧‧ shaft

221‧‧‧ the first end

222‧‧‧ second end

23‧‧‧ Engagement Department

24‧‧‧Current transmission layer

25‧‧‧ cathode conductor

26‧‧‧Power line guide ring

3, 3’‧‧‧ electroplating tank

4‧‧‧Driver

41‧‧‧Drive motor

42‧‧‧electrode connector

43‧‧‧Missing tray

5‧‧‧ mobile rack

51‧‧‧Fixed plate

52‧‧‧Side

53‧‧‧Alignment block

54‧‧‧ Auxiliary lever

55‧‧‧ Lid

56‧‧‧Grip

57‧‧‧rotary joint

58‧‧‧ cathode holder

59‧‧‧ cathode wire

6‧‧‧Fixed

7‧‧‧lifting seat

Figures 1 and 2 are schematic diagrams of the partial structure of a first preferred embodiment of a plating device for small parts according to the present invention; Figure 3 is a diagram of a second preferred embodiment of a plating device for small parts according to the present invention A perspective view of the partial structure; FIG. 4 is a cross-sectional view according to the AA tangent line of FIG. 3; and FIG. 5 is a schematic diagram showing a second electroplating tank according to a second preferred embodiment of a plating device for small parts according to the present invention.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention and the accompanying drawings in detail, as follows. Furthermore, the directional terms mentioned in the present invention include, for example, top, bottom, top, bottom, front, back, left, right, inside, outside, side, periphery, center, horizontal, horizontal, vertical, vertical, axial, The radial direction, the uppermost layer, or the lowermost layer, etc., are only directions referring to the attached drawings. Therefore, the directional terms used are for explaining and understanding the present invention, but not for limiting the present invention.

Please refer to FIG. 1 and FIG. 2, which is a preferred embodiment of an electroplating device for a small part of the present invention, which is used to electroplat or chemically plate a plurality of small parts, such as chip-type resistors, inductors, capacitors, connectors, Precision parts, etc. The electroplating device for the small parts includes a base 101 and at least one or more electroplating units 102. The present invention will explain in detail the detailed structure, assembly relationship and operation principle of each element.

Continuing to refer to FIGS. 1 and 2, the electroplating device for the small parts is provided with an electroplating unit 102 on the base 101, and each electroplating unit 102 includes an electroplating drum 2, A plating tank 3, a driver 4 and a moving frame 5. It should be noted that, in other embodiments, a plurality of electroplating units 102 may also be provided on a base 101, which is not limited to this embodiment.

Continuing to refer to FIGS. 1 and 2, the electroplating drum 2 has a cylinder 21, a rotating shaft 22, an engaging portion 23, and a current transmission layer 24. A first end 221 of the rotating shaft 22 is disposed on the barrel. On the body 21, the engaging portion 23 is disposed on a bottom of the cylindrical body 21. Further, the cylindrical body 21 has a base 211, a surrounding wall 212, and an upper cover 213. The convexity of the base 211 is engaged with the surrounding wall 212, and a cathode ring 210 is formed in the surrounding wall 212. An upper cover 213 covers an inner space (not labeled) covering the surrounding wall 212, and the current transmission layer 24 is disposed on the base 211 of the cylinder 21, and the rotating shaft 22 is connected from the base 211 to the upper cover 213 and faces the upper cover 213. Outside extension.

Continuing to refer to FIGS. 1 and 2, the electroplating tank 3 is a rectangular container, in which a partition plate 103 is disposed. The partition plate 103 is used to receive a plating solution, and the electroplating drum 2 can be immersed in the electroplating tank. 3, and one or more anode baskets 103 can be immersed in the plating tank 3.

Continuing to refer to FIGS. 1 and 2, the driver 4 is disposed below the bottom of the electroplating tank 3 to drive the engaging portion 23 to rotate and rotate the electroplating drum 2; and the driver 4 has a driving motor 41 And an electrode joint 42, the drive motor 41 is a DC drive motor for engaging with the engaging portion 23 of the electroplating drum 2, and then the cylinder 21 is driven by the engaging portion 23 to rotate, for example: the A clamping claw of the engaging portion 23 is engaged with a groove of the driving motor 41; the electrode joint 42 is disposed on the driving motor 41 and is used to be electrically connected to a cathode. In addition, the electroplating drum 2 further has a cathode conductor 25. The cathode conductor 25 is disposed in the engaging portion 23 to be in electrical contact with the electrode joint 42.

Continuing to refer to FIGS. 1 and 2, the moving frame 5 is combined on the base body 101 and used to move on the base body 101, and is located on a top of the plating tank 3, and the movement is performed by moving The rack 5 can withdraw the plating drum 2 from the plating tank 3 and place it in another plating tank (not shown). In addition, a second end 222 of the rotating shaft 22 is pivotally connected to the moving rack 5. The engaging portion 23 is located below the first end 221. It is further explained that the moving frame 5 has a fixing plate 51, two side plates 52, two positioning blocks 53, two auxiliary rods 54, and a cover 55, wherein the fixing plate 51 is used for the second end of the rotating shaft 22. 222 is pivoted, and the two side plates 52 are combined on two sides of the fixing plate 51. The two positioning blocks 53 are disposed on the two sides of the fixing plate 51 and are located outside the two side plates 52. The two positioning blocks 53 are respectively The two auxiliary rods 54 are arranged between the side plates 52 so that the cylinder 21 is located on the auxiliary rods 54. The cover 55 is used to connect with the shaft 22. The first ends 221 are screwed together and fixed on the fixing plate 51.

Continued to refer to FIGS. 1 and 2, the base body 101 has a lifting base 7, wherein the moving frame 5 is disposed on the lifting base 7, and the moving frame 5 is driven by the lifting base 7 and is close to the plating tank. 3 is moved between an immersion position of 3 and a preparation position remote from the plating tank 3.

It is further explained that an inner wall of the surrounding wall 212 of the barrel 21 of the electroplating drum 2 may be provided with the cathode ring 210, and the cathode ring 210 may be connected to a cathode conductor 25 in the engaging portion 23, and It is electrically connected to the electrode joint 42 and uses the centrifugal force of the electroplating drum 2 during rotation to cause the small parts in the cylinder 21 to be driven onto the surface of the cathode ring.

It should be noted that the current transmission layer 24 is made of titanium metal, titanium plating, or titanium sprayed material, and the cylinder 21 is made of a plastic material. Between the current transmission layer 24 and the cylinder 21 An intermediate layer (not shown) is provided, and the intermediate layer is made of plastic material.

According to the above structure, the driver 4 is arranged below the bottom of the plating tank 3, and the plating drum 2 is driven to rotate intermittently through the engagement of the engaging portion 23 and the driving motor 41, and by The surface of the cathode ring can be electrically connected to the electrode joint 42 while using The centrifugal force of the electroplating drum 2 during rotation causes the small parts in the cylinder body 21 to be driven onto the surface of the cathode ring, thereby achieving the effect of evenly plating the surfaces of the small parts.

As described above, the driver 4 is installed in the plating tank 3 and the plating drum 2 is driven to rotate through the engagement between the engaging portion 23 and the driving motor 41, so that the plating drum 2 is not only easily moved and replaced. It can also improve the plating speed and efficiency of such small parts, and the structure of the plating device of the small parts is simple, so that subsequent maintenance costs are lower.

Please refer to Figs. 3, 4 and 5, which are a second preferred embodiment of the electroplating device for small parts of the present invention, and generally use the same component names and drawing numbers of the above-mentioned preferred embodiments, but there are differences between the two. It is characterized in that the moving frame 5 can be moved through an external device, such as a robot arm, so that the electroplating drum 2 can be moved from one electroplating tank 3 to the other electroplating tank 3 '; further, the electroplating drum 2 has another A power line guide ring 26 is disposed in the cylinder 21 and spaced from the surrounding wall 212. The moving frame 5 has a fixed plate 51, two side plates 52, two auxiliary rods 54, two grips 56, and one rotation. The joint 57 and the two cathode bases 58, wherein the side plates 52 are combined on both sides of the fixing plate 51, and the auxiliary rods 54 are arranged between the side plates 52 so that the cylinder 21 is located on the auxiliary rods 54. The holding members 56 are respectively disposed on two sides of a top surface of the fixing plate 51 at intervals. The rotary joint 57 is pivotally connected to the fixing plate 51 for combining with the second end 222 of the rotating shaft 22. The cathode holder 58 is disposed on two sides of a bottom of the fixed plate 51 for transmitting a cathode 59 is connected to the cathode 210 is electrically ring 22 via the spindle. In addition, the bottom of the cylinder 21 is provided with a compulsory vortex blade, which can exchange the plating solution quickly. The driving motor 41 is disposed below the bottom of the plating tank 3, and the plating device also has a leakage plate 43. Is disposed between the driving motor 41 and the bottom of the plating tank 3 for receiving the liquid leaked from the plating tank 3.

According to the above structure, loosening the rotary joint 57 can disengage the cylinder 21 and the rotating shaft 22 from the moving frame 5 together. The cathode holders 58 on the two sides of the bottom of the fixed plate 51 can be in electrical contact with each other. The cathode ring 210 is electrically connected, and power is cut off when the fixing plate 51 is moved away. In addition, when the cathode ring 210 rotates and accelerates to a specified speed, the small parts (the objects to be plated) in the cylinder 21 are closely attached to the cathode ring 210 due to centrifugal force, and the power is supplied for electroplating, and it will be broken after a period of time. Electricity and decelerates the cathode ring 210 to a low speed, the small parts (the objects to be plated) in the cylinder 21 are mixed due to gravity falling on the bottom of the cylinder 21, and then the small parts (the objects to be plated) are mixed ) After mixing, the cathode ring 210 is rotated and accelerated to a specified speed, so that low-speed mixing and accelerated plating of these small parts (plated objects) are performed intermittently, and then low-speed mixing and accelerated plating are performed, so that these small parts (plated objects) ) Surface can have more uniform plating effect.

Although the present invention has been disclosed in a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection shall be determined by the scope of the attached patent application.

Claims (5)

An electroplating device for small parts includes: at least one electroplating unit, each electroplating unit includes: a moving frame; an electroplating drum having a cylinder, a rotating shaft and an engaging portion, wherein a first end of the rotating shaft is arranged On the cylinder, the engaging portion is disposed on a bottom of the cylinder. The cylinder has a base, a surrounding wall and an upper cover. The base is combined with the surrounding wall, and the cathode is formed in the surrounding wall. A ring, the rotating shaft is connected to the upper cover from the base and extends outward; a plating tank containing a plating solution to soak the plating drum; and a driver for driving the engaging portion to rotate to drive the plating drum to rotate. The electroplating device for small parts as described in item 1 of the scope of patent application, wherein the driver has a driving motor for engaging with the engaging part of the electroplating drum to drive the cylinder to rotate intermittently. The electroplating device for small parts as described in item 1 of the scope of patent application, wherein the moving frame has: a fixed plate; two side plates combined on two sides of the fixed plate; two auxiliary rods arranged between the side plates, The cylinder is positioned on the auxiliary rod; and a rotary joint is pivotally connected to the fixing plate for combining with the second end of the rotating shaft. The electroplating device for small parts as described in the third item of the patent application scope, wherein the moving frame further has two cathode bases, which are arranged on two sides of one bottom of the fixed plate for electrical connection with a cathode ring. The electroplating device for small parts as described in item 1 of the scope of the patent application, further has a leakage tray, which is arranged on the driving motor to receive the liquid leaked from the electroplating tank.