Electroplating device for cold plate

Abstract

The utility model provides an electroplating device for a cold plate, which comprises a tank body used for accommodating an electroplating solution, and an electroplating device used for electroplating the cold plate, the plurality of anodes are arranged adjacent to the inner side wall of the tank body, and the anodes can be connected with an anode of a power supply; the mechanical arm can move in the horizontal direction and the vertical direction, and the mechanical arm comprises a moving plate; the first motor is arranged on the moving plate, and a first rotating shaft of the first motor downwards penetrates out of the moving plate; the hanging tool comprises a rotating disc and a connecting mechanism rotatably connected to the lower portion of the rotating disc, the rotating disc is connected with a first rotating shaft of the first motor, the connecting mechanism is used for being connected with a cold plate, and the hanging tool can be connected with the negative electrode of the power source. According to the electroplating device for the cold plate, the uniformity and compactness of a plating layer can be improved, and pits of the plating layer are reduced.

Description

Technical Field

[0001] The utility model relates to the field of cold plates, in particular to an electroplating device for cold plates. Background Art

[0002] The cold plate is welded to the object to be cooled (power device, power module or chip), but the cold plate is usually an aluminum plate. The aluminum plate is cheap and has good thermal conductivity, but its weldability with the object to be cooled is relatively poor. In order to achieve better weldability on the aluminum plate, a metal layer with good welding performance is electroplated on the cold plate to achieve better weldability.

[0003] However, the existing electroplating of cold plates has poor uniformity, and is prone to pits and poor density. Utility Model Content

[0004] In view of the above problems in the prior art, the purpose of the utility model is to provide an electroplating device for a cold plate, which can increase the uniformity and density of the coating and reduce the pits in the coating.

[0005] In order to solve the above problems, the utility model provides an electroplating device for a cold plate, the electroplating device for a cold plate comprising:

[0006] A tank body, the tank body is used to contain the electroplating solution;

[0007] A plurality of anodes, wherein the plurality of anodes are arranged adjacent to the inner side wall of the tank body, and the anodes can be connected to the positive pole of a power source;

[0008] A mechanical arm, the mechanical arm can move horizontally and vertically, and the mechanical arm includes a moving plate;

[0009] A first motor, wherein the first motor is disposed on the moving plate and a first rotating shaft thereof passes downwardly through the moving plate;

[0010] A hanger, the hanger includes a turntable and a connecting mechanism rotatably connected to the bottom of the turntable, the turntable is connected to the first rotating shaft of the first motor, the connecting mechanism is used to connect to the cold plate, and the hanger can be connected to the negative pole of the power supply.

[0011] Furthermore, the connecting mechanism comprises:

[0012] A plurality of connecting posts, the connecting mechanism is rotatably connected to the rotating disk through the plurality of connecting posts, and the plurality of connecting posts are arranged along the circumference of the rotating disk;

[0013] A second motor, which is disposed at the middle of the bottom of the turntable and includes a rotatable second rotating shaft;

[0014] A synchronous belt, wherein the synchronous belt surrounds all the connecting posts and is connected to the second rotating shaft of the second motor, and the rotation of the second rotating shaft of the second motor can drive all the connecting posts to rotate;

[0015] A plurality of clamping plate assemblies are connected to a plurality of connecting columns one by one, the clamping plate assemblies can rotate along with the connecting columns, and the connecting mechanism clamps the cold plate through the clamping plate assemblies.

[0016] Furthermore, the clamping plate assembly comprises:

[0017] An upper clamping plate, through which the clamping plate assembly is connected to the connecting column;

[0018] A lower clamping plate, the lower clamping plate is located below the lower clamping plate;

[0019] Two screw rods, the two screw rods respectively pass through the two ends of the upper clamping plate and the lower clamping plate in the length direction, and are threadedly connected with the upper clamping plate and the lower clamping plate;

[0020] Two butterfly nuts are respectively connected to the two screw rods and are located on a side of the lower clamping plate away from the upper clamping plate.

[0021] Furthermore, the tank body is formed as a rectangular tank body, and the plurality of anodes are arranged adjacent to the lateral inner side wall of the rectangular tank body.

[0022] Furthermore, the electroplating device further comprises:

[0023] A hanging rod, wherein both ends of the hanging rod in the length direction are respectively connected to the two longitudinal inner walls of the trough body and are adjacent to the transverse inner wall of the trough body. The hanging rod is connected to the anode and makes the anode have a predetermined distance from the transverse inner wall of the trough body.

[0024] Furthermore, the electroplating device further comprises:

[0025] An ultrasonic generator is arranged on the longitudinal inner wall of the rectangular trough body.

[0026] Furthermore, the electroplating device further comprises:

[0027] A chassis, the chassis is rotatably connected to the bottom wall of the tank body, the turntable comprises a central disk and circumferential blades connected to the central disk;

[0028] A third motor is connected to the chassis to drive the central disc to rotate.

[0029] Furthermore, a liquid discharge port is formed at the lower portion of the tank body, and a liquid inlet is formed at the upper portion thereof.

[0030] The electroplating device also includes:

[0031] a water pump, wherein a first end of the water pump is connected to the liquid discharge port;

[0032] A deaerator, wherein a first end of the deaerator is connected to the second end of the water pump, and a second end of the deaerator is connected to the liquid inlet.

[0033] Furthermore, the electroplating device further comprises:

[0034] A filter, wherein the second end of the degassing machine is connected to the liquid inlet through the filter.

[0035] Furthermore, the filter includes a detachable filter element.

[0036] Due to the above technical solution, the utility model has the following beneficial effects:

[0037] According to the electroplating device for cold plates of the utility model, during the electroplating process, the tank contains the electroplating liquid. The movable plate of the mechanical arm drives the first motor to move horizontally, and the first rotating shaft of the first motor drives the hanger to move horizontally. When reaching the upper part of the tank, the mechanical arm drives the first motor and the hanger to move downward (vertical movement), so that the hanger is immersed in the electroplating liquid, that is, the cold plate connected to the hanger is also immersed in the electroplating liquid. The power supply is supplied, and the electroplating liquid dissolves the anode connected to the positive electrode of the power supply, and the negative electrode of the power supply passes through the cold plate (i.e., the cathode) connected to the hanger, thereby electroplating the cold plate, and then forming a coating with good weldability on the surface of the cold plate. During the electroplating process, the movable plate can move up and down, thereby driving the cold plate to move up and down, and the first motor drives the turntable to rotate, thereby driving the cold plate to rotate with the turntable, and can rotate itself, so that each cold plate can contact the electroplating liquid in different areas, increasing the uniformity of the electroplating, and during the rotation process, the bubbles on the surface of the cold plate can be separated from the cold plate, avoiding the pits and loose structure of the coating caused by the bubbles during the electroplating process, and increasing the uniformity and density of the coating. Moreover, for cold plates that only need to be electroplated on the front side, the back sides of two cold plates can be placed against each other, and a hanger can be used to connect the two cold plates. The rotation of the cold plates themselves can enable the front sides of the two cold plates to face the anode, further increasing the uniformity of electroplating. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1It is a structural diagram of a mechanical arm, a first motor and a hanger according to an embodiment of the utility model;

[0040] Figure 2 It is a structural diagram of a tank body, a chassis, an ultrasonic generator, an anode, a suspension rod, a water pump, a deaerator and a filter according to an embodiment of the utility model.

[0041] Reference numerals:

[0042] 110. Robotic arm; 111. Moving plate; 120. First motor; 130. Turntable; 141. Second motor; 142. Connecting column; 143. Upper clamping plate; 144. Lower clamping plate; 145. Screw; 146. Butterfly nut; 147. Synchronous belt; 210. Tank body; 220. Suspension rod; 230. Anode; 241. Center disk; 242. Paddle; 251. Water pump; 252. Degassing machine; 253. Filter; 260. Ultrasonic generator. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0045] Next, an electroplating device for a cold plate according to an embodiment of the present invention is described.

[0046] like Figure 1 and Figure 2 As shown, the electroplating device of the embodiment of the utility model includes: a tank body 210, a plurality of anodes 230, a robot arm 110, a first motor 120 and a hanger.

[0047] First, the tank body 210 and the plurality of anodes 230 are described. The tank body 210 is used to contain the electroplating solution. The plurality of anodes 230 are disposed adjacent to the inner wall of the tank body 210, and the anodes 230 can be connected to the positive pole of the power supply.

[0048] like Figure 2 As shown, the anode 230 is disposed adjacent to the inner side wall of the tank body 210. During the electroplating process, the electroplating solution in the tank body 210 dissolves the anode 230 to generate metal ions used for plating.

[0049] Next, the robot arm 110 and the first motor 120 are described. The robot arm 110 can move horizontally and vertically, and includes a moving plate 111. The first motor 120 is disposed on the moving plate 111, and a first rotation axis thereof passes through the moving plate 111 downward.

[0050] like Figure 1 As shown, the moving plate 111 of the mechanical arm 110 can move horizontally and vertically. The mechanical arm 110 that can move horizontally and vertically is a known technology and will not be described in detail here.

[0051] The first motor 120 is disposed on the moving plate 111 , so as to be able to move horizontally and vertically following the moving plate 111 .

[0052] Finally, the hanger is described. The hanger includes a turntable 130 and a connection mechanism rotatably connected below the turntable 130. The turntable 130 is connected to the first rotating shaft of the first motor 120. The connection mechanism is used to connect the cold plate. The hanger can be connected to the negative pole of the power supply.

[0053] like Figure 1 As shown, the first rotating shaft of the first motor 120 is connected to the turntable 130, so that the turntable 130 can be driven to rotate, and the connecting mechanism for connecting the cold plate is rotatably connected to the turntable 130, that is, the connecting mechanism can also rotate during the rotation of the turntable 130. The connecting mechanism is connected to the cold plate, and the cold plate can rotate with the turntable 130 and can rotate itself (not rotating synchronously with the turntable).

[0054] In the above cold plate electroplating device, during the electroplating process, the tank body 210 contains the electroplating liquid. The moving plate 111 of the robot arm 110 drives the first motor 120 to move horizontally, and the first rotating shaft of the first motor 120 drives the hanger to move horizontally. When reaching the upper part of the tank body 210, the robot arm 110 drives the first motor 120 and the hanger to move downward (vertical movement), so that the hanger is immersed in the electroplating liquid, that is, the cold plate connected to the hanger is also immersed in the electroplating liquid. The power supply is supplied, and the electroplating liquid dissolves the anode 230 connected to the positive electrode of the power supply, and the negative electrode of the power supply passes through the cold plate (i.e., the cathode) connected to the hanger, thereby electroplating the cold plate, and then forming a coating with good weldability on the surface of the cold plate. During the electroplating process, the movable plate 111 can move up and down, thereby driving the cold plate to move up and down, and the first motor 120 drives the turntable 130 to rotate, thereby driving the cold plate to rotate with the turntable 130, and can rotate itself, so that each cold plate can contact the electroplating solution in different areas, increasing the uniformity of electroplating, and during the rotation process, the bubbles on the surface of the cold plate can be separated from the cold plate, avoiding the pits and loose structure of the coating caused by bubbles during the electroplating process, and increasing the uniformity and density of the coating. Moreover, for the cold plate that only needs to be electroplated on the front side, the backs of the two cold plates can be attached to each other, and the hanger connects the two cold plates. The rotation of the cold plate itself can make the front sides of the two cold plates face the anode 230, further increasing the uniformity of electroplating.

[0055] In some embodiments of the present invention, the connection mechanism includes: a plurality of connection columns 142 , a second motor 141 , a synchronous belt 147 and a plurality of clamping plate assemblies.

[0056] The connection mechanism is rotatably connected to the turntable 130 through a plurality of connection columns 142, and the plurality of connection columns 142 are arranged along the circumference of the turntable 130. The second motor 141 is arranged in the middle of the bottom of the turntable 130, and includes a rotatable second shaft. The synchronous belt 147 surrounds all the connection columns 142 and is connected to the second shaft of the second motor 141. The rotation of the second shaft of the second motor 141 can drive all the connection columns 142 to rotate. A plurality of clamping plate assemblies are connected to the plurality of connection columns 142 in a one-to-one correspondence. The clamping plate assemblies can rotate with the connection columns 142. The connection mechanism clamps the cold plate through the clamping plate assemblies. The clamping plate assemblies can rotate with the connection columns 142. The connection mechanism clamps the cold plate through the clamping plate assemblies.

[0057] like Figure 1 As shown, the rotation of the second shaft of the second motor 141 drives the synchronous belt 147 to rotate, and the rotation of the synchronous belt 147 drives all six connecting columns 142 to rotate, and the six clamping plate assemblies follow the six connecting columns 142 to rotate synchronously, that is, the second motor 141 can stably drive the cold plate to rotate at a predetermined speed. In this way, the cold plate can be easily and stably rotated around the connecting columns.

[0058] Furthermore, the clamping plate assembly includes: an upper clamping plate 143 , a lower clamping plate 144 , two screw rods 145 and two butterfly nuts 146 .

[0059] The clamping plate assembly is connected to the connecting column 142 via the upper clamping plate 143. The lower clamping plate 144 is located below the lower clamping plate 144. Two screw rods 145 pass through the ends of the upper clamping plate 143 and the lower clamping plate 144 in the length direction, and are threadedly connected to the upper clamping plate 143 and the lower clamping plate 144. Two butterfly nuts 146 are respectively connected to the two screw rods 145 and are located on the side of the lower clamping plate 144 away from the upper clamping plate 143.

[0060] like Figure 1 As shown, when the cold plate needs to be clamped, the cold plate is first inserted between the upper clamping plate 143 and the lower clamping plate 144, and the two butterfly nuts 146 are rotated so that the two butterfly nuts 146 rise along the two screws 145 respectively, thereby squeezing the lower clamping plate 144, so that the upper clamping plate 143 and the lower clamping plate 144 clamp the cold plate to prevent the cold plate from falling. This method is easy to operate and meets the clamping requirements of cold plates of various sizes.

[0061] In some embodiments of the present invention, the tank body 210 is formed as a rectangular tank body, and the plurality of anodes 230 are disposed adjacent to the lateral inner sidewall of the rectangular tank body 210 .

[0062] like Figure 1 As shown, anodes 230 are disposed adjacent to the two lateral inner side walls of the rectangular tank. This structure is simple and easy to maintain.

[0063] Furthermore, the electroplating device also includes a hanging rod 220, the two ends of the hanging rod 220 in the length direction are respectively connected to the two longitudinal inner walls of the trough body 210, and are adjacent to the transverse inner wall of the trough body 210. The hanging rod 220 is connected to the anode 230, and the anode 230 has a predetermined distance from the transverse inner wall of the trough body 210.

[0064] like Figure 1 As shown, two hanging rods 220 are respectively arranged adjacent to the transverse inner side wall, and each hanging rod 220 hangs and connects five anodes 230. The hanging rods 220 can be used to conveniently take and replace the anodes 230, and keep the anodes 230 at a predetermined distance from the side wall of the tank body 210.

[0065] In some embodiments of the present invention, the electroplating device further includes an ultrasonic generator 260 , which is disposed on the longitudinal inner wall of the rectangular trough body 210 .

[0066] like Figure 2The longitudinal inner plate of the tank body 210 is provided with an ultrasonic generator 260. The ultrasonic generator 260 can generate ultrasonic waves, which can eliminate bubbles in the electroplating solution during the electroplating process, and prevent the bubbles from adhering to the surface of the cold plate and causing pits or loose structures in the plating layer.

[0067] Furthermore, the electroplating device further comprises a chassis and a third motor. The chassis is rotatably connected to the bottom wall of the tank body 210, and the turntable 130 comprises a central disk 241 and circumferential blades 242 connected to the central disk 241. The third motor is connected to the chassis to drive the central disk 241 to rotate.

[0068] like Figure 2 As shown, the third motor drives the central disk 241 to rotate, and the rotation of the central disk 241 drives the paddle 242 to rotate. The rotation of the paddle 242 can stir the electroplating solution and increase the uniformity of the electroplating solution. In addition, during the electroplating process, metal ions will fall due to gravity, and the rotation of the paddle 242 can generate an upward thrust, which can slow down the falling speed of the metal ions and increase the efficiency of the electroplating.

[0069] In some embodiments of the present invention, a liquid discharge port is formed at the lower portion of the tank body 210 , and a liquid inlet is formed at the upper portion thereof.

[0070] The electroplating device further includes a water pump 251 and a degassing machine 252. The first end of the water pump 251 is connected to the liquid discharge port. The first end of the degassing machine 252 is connected to the second end of the water pump 251, and the second end thereof is connected to the liquid inlet.

[0071] like Figure 2 As shown, the degassing machine 252 extracts the plating solution at the bottom of the tank body 210 through the liquid discharge port, degasses it, and inputs the degassed plating solution into the upper part of the plating tank through the liquid inlet. In this way, the plating solution at the bottom of the tank body 210 and the plating solution at the top can be mixed, and the bubbles in the plating solution can be significantly reduced.

[0072] Furthermore, the electroplating device also includes a filter 253 , and the second end of the degassing machine 252 is connected to the liquid inlet through the filter 253 .

[0073] like Figure 2 As shown, the degasser 252 is connected to the filter 253, and the filter 253 is connected to the liquid inlet of the tank 210. The electroplating solution enters the filter 253 after being degassed by the degasser 252. The filter 253 can reduce impurities in the electroplating solution and reduce bubbles in the electroplating solution, thereby increasing the cleanliness of the electroplating solution and reducing the amount of bubbles.

[0074] Further, the filter 253 includes a detachable filter element.

[0075] After the filter 253 is used for a period of time, the inside thereof will be dirty, which will affect the filtering effect. By replacing the filter element in the filter 253, the dirt inside thereof can be easily and quickly removed.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electroplating device for a cold plate, characterized in that: The electroplating device comprises: A tank body, the tank body is used to contain the electroplating solution; A plurality of anodes, wherein the plurality of anodes are arranged adjacent to the inner side wall of the tank body, and the anodes can be connected to the positive pole of a power source; A mechanical arm, the mechanical arm can move horizontally and vertically, and the mechanical arm includes a moving plate; A first motor, wherein the first motor is disposed on the moving plate and a first rotating shaft thereof passes downwardly through the moving plate; A hanger, the hanger includes a turntable and a connecting mechanism rotatably connected to the bottom of the turntable, the turntable is connected to the first rotating shaft of the first motor, the connecting mechanism is used to connect to the cold plate, and the hanger can be connected to the negative pole of the power supply.

2. The electroplating device for cold plate according to claim 1, characterized in that: The connecting mechanism comprises: A plurality of connecting posts, the connecting mechanism is rotatably connected to the rotating disk through the plurality of connecting posts, and the plurality of connecting posts are arranged along the circumference of the rotating disk; A second motor, which is disposed at the middle of the bottom of the turntable and includes a rotatable second rotating shaft; A synchronous belt, wherein the synchronous belt surrounds all the connecting posts and is connected to the second rotating shaft of the second motor, and the rotation of the second rotating shaft of the second motor can drive all the connecting posts to rotate; A plurality of clamping plate assemblies are connected to a plurality of connecting columns one by one, the clamping plate assemblies can rotate along with the connecting columns, and the connecting mechanism clamps the cold plate through the clamping plate assemblies.

3. The electroplating device for cold plate according to claim 2, characterized in that: The splint assembly comprises: An upper clamping plate, through which the clamping plate assembly is connected to the connecting column; A lower clamping plate, the lower clamping plate is located below the lower clamping plate; Two screw rods, the two screw rods respectively pass through the two ends of the upper clamping plate and the lower clamping plate in the length direction, and are threadedly connected with the upper clamping plate and the lower clamping plate; Two butterfly nuts are respectively connected to the two screw rods and are located on a side of the lower clamping plate away from the upper clamping plate.

4. The electroplating device for cold plate according to claim 1, characterized in that: The tank body is formed as a rectangular tank body, and the plurality of anodes are arranged adjacent to the lateral inner side wall of the rectangular tank body.

5. The electroplating device for cold plate according to claim 4, characterized in that: The electroplating device also includes: A hanging rod, wherein both ends of the hanging rod in the length direction are respectively connected to the two longitudinal inner walls of the trough body and are adjacent to the transverse inner wall of the trough body. The hanging rod is connected to the anode and makes the anode have a predetermined distance from the transverse inner wall of the trough body.

6. The electroplating device for cold plate according to claim 4, characterized in that: The electroplating device also includes: An ultrasonic generator is arranged on the longitudinal inner wall of the rectangular trough body.

7. The electroplating device for cold plate according to claim 6, characterized in that: The electroplating device also includes: A chassis, the chassis is rotatably connected to the bottom wall of the tank body, the turntable comprises a central disk and circumferential blades connected to the central disk; A third motor is connected to the chassis to drive the central disc to rotate.

8. The electroplating device for cold plate according to claim 1, characterized in that: The lower part of the tank body is formed with a liquid discharge port, and the upper part thereof is formed with a liquid inlet. The electroplating device also includes: a water pump, wherein a first end of the water pump is connected to the liquid discharge port; A deaerator, wherein a first end of the deaerator is connected to the second end of the water pump, and a second end of the deaerator is connected to the liquid inlet.

9. The electroplating device for cold plate according to claim 8, characterized in that: The electroplating device also includes: A filter, wherein the second end of the degassing machine is connected to the liquid inlet through the filter.

10. The electroplating device for cold plate according to claim 9, characterized in that: The filter includes a detachable filter element.

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