Drain assembly for centrifugal plating machine plating tank

Abstract

The present invention discloses a drainage assembly for a centrifugal electroplating machine electroplating cylinder, comprising a drainage hole at the bottom of the electroplating cylinder body, and a vertically arranged suction rod, a suction head is provided at the bottom end of the suction rod, a filter screen for filtering electroplated products is provided on the suction head, the other end of the suction rod is connected to a suction pump, the suction rod is driven to rise and fall by a driving cylinder, and the suction rod can be lowered into the cylinder body of the electroplating cylinder. The present invention has the advantages of fast drainage speed and no drainage residue.

Description

Technical Field

[0001] The invention mainly relates to the field of centrifugal electroplating machines, in particular to a drainage component for an electroplating cylinder of a centrifugal electroplating machine. Background Art

[0002] In the field of electroplating equipment for micro electronic components, the centrifugal electroplating machine mainly includes an anode device and an electroplating cylinder. The electroplating cylinder mainly includes a cylinder body driven to rotate by a motor, the anode device is connected to the current anode, and the cathode ring of the cylinder body is connected to the current cathode. When working, electroplating liquid with plating metal ions is added to the cylinder body, and the anode device is inserted into the electroplating liquid to continuously replenish the plating metal ions to the electroplating liquid. The centrifugal force generated by the rotation of the cylinder body is used to throw the micro electronic components in the cylinder body to the inner wall of the cathode ring and continuously roll after colliding with the inner wall of the cathode ring, so that the micro electronic components are efficiently and evenly plated.

[0003] The body of the electroplating cylinder is mainly composed of a cathode ring, a bottom plate and an upper cover. The bottom plate is provided with a drain hole, which is used to drain the electroplating solution in the cylinder. The drain hole is provided with a filter screen, and the mesh diameter of the filter screen is smaller than the size of the electroplated product to prevent the electroplated product from falling into the drain hole. For electroplating products of small size such as microelectronic components, the mesh of the filter screen must be set very small, but too small a mesh will lead to difficulty in drainage, slow drainage, and inability to drain completely. When the solution needs to be drained after electroplating, since the solution cannot be drained completely, a large amount of water can only be used to dilute the residual solution when cleaning the cylinder body later, resulting in a long cleaning time, and it cannot be completely cleaned, which is easy to cause cross infection of the solution in the next electroplating process. Furthermore, the undrained solution also causes a certain degree of solution waste because it cannot be discharged back to the solution circulation system. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the defects of the prior art, a drainage component for a centrifugal electroplating machine electroplating cylinder with fast drainage speed and no drainage residue is provided.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A drainage assembly for an electroplating cylinder of a centrifugal electroplating machine includes a drainage hole at the bottom of the electroplating cylinder body, and also includes a suction rod. The suction rod is a vertically arranged pipe. A suction head is provided at the bottom end of the suction rod. A filter screen that can filter electroplated products is provided on the suction head. The other end of the suction rod is connected to a suction pump. The suction rod is driven up and down by a driving cylinder and can be lowered into the cylinder body of the electroplating cylinder.

[0007] Furthermore, the suction rod can be lowered to make the suction head close to the bottom of the electroplating tank.

[0008] Furthermore, a filter screen is provided at the bottom of the suction head, or a filter screen is provided at the bottom and side of the suction head.

[0009] Furthermore, the suction rod is provided with a cleaning device for cleaning the outer wall of the suction rod, the cleaning device includes a cleaning ring which is sleeved on the suction rod, the height position of the cleaning ring is fixed, the suction rod moves up and down relative to the cleaning ring when it is raised or lowered, the cleaning ring is provided with a water inlet and a water spray hole, the water inlet is connected to a water supply pipe, and the water spray hole faces the outer wall of the suction rod.

[0010] Furthermore, the water inlet is arranged on the upper end surface or the outer side surface of the cleaning ring, and the water spray hole is arranged on the inner side surface of the cleaning ring.

[0011] Furthermore, there are multiple water spray holes, and the multiple water spray holes are evenly distributed on the inner side surface of the cleaning ring along the circumferential direction.

[0012] Furthermore, a guide sleeve is connected to the bottom of the cleaning ring to guide the lifting movement of the suction rod.

[0013] Furthermore, the cleaning ring is fixed on the top bracket of the centrifugal electroplating machine.

[0014] Compared with the prior art, the advantages of the present invention are: 1. The present invention adds a suction rod, which can be extended into the cylinder body of the electroplating cylinder. The water in the cylinder body of the electroplating cylinder can be sucked out by the action of a suction pump. Compared with the natural drainage of the drainage holes in the bottom plate, the suction rod sucks out the water through a strong suction force, and the drainage is faster and more thorough without any residue. 2. The suction rod is provided with a cleaning device for cleaning the outer wall of the suction rod, which can rinse off the electroplating solution and the like on the outer wall of the suction rod, keep the suction rod clean, and avoid contamination by the suction rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention in a specific application.

[0016] Figure 2 It is an enlarged structural schematic diagram (stereoscopic diagram) of the cleaning device in the present invention.

[0017] Figure 3 It is an enlarged structural schematic diagram (cross-sectional view) of the cleaning device in the present invention.

[0018] Figure 4 It is an enlarged structural schematic diagram (stereoscopic diagram) of the suction head in the present invention.

[0019] Figure 5 It is a schematic diagram of the enlarged structure of the suction head in the present invention (bottom view).

[0020] Legend: 1. Cylinder body; 2. Suction rod; 3. Suction head; 4. Filter screen; 5. Suction pump; 6. Driving cylinder; 7. Cleaning ring; 8. Water inlet; 9. Water spray hole; 10. Ring groove; 11. Water supply pipe; 12. Water valve; 13. Guide sleeve; 14. Top bracket. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be pointed out that the protection scope of the present invention is not limited to the following embodiments. Without departing from the principle of the present invention, any improvements and modifications made to the present invention should be regarded as the protection scope of the present invention.

[0022] like Figure 1 As shown, the drainage assembly for the electroplating cylinder of the centrifugal electroplating machine of the present invention includes a drainage hole at the bottom of the electroplating cylinder body 1 (belonging to the prior art, omitted in the figure), and also includes a suction rod 2, which is a vertically arranged pipe. The bottom end of the suction rod 2 is provided with a suction head 3, which is used to absorb water in the cylinder body 1. The suction head 3 is provided with a filter screen 4 that can filter the electroplated products to prevent the electroplated products from being sucked away. The other end of the suction rod 2 is connected to a suction pump 5, and the water in the cylinder body 1 is emptied by the strong suction force provided by the suction pump 5. The suction rod 2 is fixedly connected to a driving cylinder 6, and the suction rod 2 is driven to rise and fall by the driving cylinder 6. During electroplating, the suction rod 2 rises and moves away from the cylinder body 1. When water needs to be absorbed after the electroplating is completed, the suction rod 2 descends into the cylinder body 1 of the electroplating cylinder.

[0023] Preferably, the suction rod 2 can be lowered to make the suction head 3 close to the bottom of the cylinder body 1 of the electroplating cylinder to ensure that the water in the cylinder body 1 can be sucked cleanly without residue.

[0024] See also Figure 3 , Figure 4 , the bottom and side of the suction head 3 are provided with a filter 4. Of course, the filter 4 can also be provided only at the bottom of the suction head 3.

[0025] The suction rod 2 is provided with a cleaning device for cleaning the outer wall of the suction rod 2. The cleaning device includes a cleaning ring 7 which is sleeved on the suction rod 2. The height position of the cleaning ring 7 is fixed. When the suction rod 2 is raised or lowered, it moves up and down relative to the cleaning ring 7. Figure 2 , Figure 3 The cleaning ring 7 is provided with a water inlet 8 and a water spray hole 9, the water inlet 8 is externally connected to a water supply pipe 11, and a water valve 12 is provided on the water supply pipe 11. The water spray hole 9 faces the outer wall of the suction rod 2. When the suction rod 2 empties the water in the cylinder 1, the suction rod 2 rises, and the water valve 12 opens at the same time, and the water spray hole 9 of the cleaning ring 7 sprays water to the outer wall of the suction rod 2 to wash away the residue on the outer wall of the suction rod 2.

[0026] Preferably, the cleaning ring 7 is fixed on the top bracket 14 of the centrifugal electroplating machine.

[0027] Preferably, the water inlet 8 is arranged on the upper end surface or the outer side surface of the cleaning ring 7, and the water spray hole 9 is arranged on the inner side surface of the cleaning ring 7. The water inlet 8 and the water spray hole 9 are connected through the annular groove 10 arranged on the cleaning ring 7.

[0028] Preferably, there are multiple water spray holes 9, and the multiple water spray holes 9 are evenly distributed on the inner side surface of the cleaning ring 7 along the circumferential direction.

[0029] Preferably, a guide sleeve 13 is connected to the bottom of the cleaning ring 7 to guide the lifting movement of the suction rod 2 .

Claims

1. A drainage assembly for a centrifugal electroplating machine electroplating cylinder, comprising a drainage hole at the bottom of the electroplating cylinder body, characterized in that: It also includes a suction rod, which is a vertically arranged pipe. A suction head is provided at the bottom end of the suction rod, and a filter net that can filter the electroplated products is provided on the suction head. The other end of the suction rod is connected to a suction pump. The suction rod is driven to rise and fall by a driving cylinder, and the suction rod can be lowered into the cylinder body of the electroplating cylinder; the suction rod is provided with a cleaning device for cleaning the outer wall of the suction rod, and the cleaning device includes a cleaning ring sleeved on the suction rod, and the height position of the cleaning ring is fixed. When the suction rod is lifted or lowered, it moves up and down relative to the cleaning ring, and a water inlet and a water spray hole are provided on the cleaning ring. The water inlet is externally connected to a water supply pipe, and the water spray hole faces the outer wall of the suction rod; there are multiple water spray holes, and the multiple water spray holes are evenly distributed on the inner side surface of the cleaning ring along the circumferential direction.

2. The drainage assembly for the electroplating tank of a centrifugal electroplating machine according to claim 1, characterized in that: The suction rod can be lowered to make the suction head close to the bottom of the electroplating tank.

3. The drainage assembly for the electroplating tank of a centrifugal electroplating machine according to claim 1, characterized in that: The bottom of the suction head is provided with a filter screen, or the bottom and side surfaces of the suction head are provided with filter screens.

4. The drainage assembly for the electroplating tank of a centrifugal electroplating machine according to claim 1, characterized in that: The water inlet is arranged on the upper end surface or the outer side surface of the cleaning ring, and the water spray hole is arranged on the inner side surface of the cleaning ring.

5. The drainage assembly for the electroplating tank of a centrifugal electroplating machine according to claim 1, characterized in that: The bottom of the cleaning ring is connected with a guide sleeve for guiding the lifting movement of the suction rod.

6. The drainage assembly for the electroplating tank of a centrifugal electroplating machine according to claim 1, characterized in that: The cleaning ring is fixed on the top bracket of the centrifugal electroplating machine.

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