Chemical circulation system for electroplating machine

Abstract

The invention discloses a medicine circulation system for an electroplating machine, comprising a medicine tank and a filter, wherein the transverse space of the medicine tank is sequentially divided into an electrolytic chamber, a main medicine tank, and a filtering medicine tank, wherein the electrolytic chamber and the main medicine tank are separated by a first partition, and the main medicine tank and the filtering medicine tank are separated by a second partition, wherein the height of the first partition is higher than the height of the second partition and lower than the depth of the medicine tank, wherein an electrolytic device is arranged in the electrolytic chamber, wherein the medicine in the electrolytic chamber will automatically overflow to the main medicine tank over the first partition when it is full, wherein the medicine in the main medicine tank is filtered by the filter and then sent to the filtering medicine tank, wherein the medicine in the filtering medicine tank will automatically overflow to the main medicine tank over the second partition when it is full, wherein the medicine in the filtering medicine tank is sent to the electroplating machine by a medicine pump, and the old medicine discharged by the electroplating machine is recycled to the electrolytic chamber. The invention can ensure the sufficient fluidity of the medicine and improve the quality of the medicine.

Description

Technical Field

[0001] The invention mainly relates to the field of electroplating equipment, in particular to a liquid medicine circulation system for an electroplating machine. Background Art

[0002] During the electroplating process of the electroplating machine, impurities will be generated in the electroplating solution. In order to ensure the quality of electroplating, it is necessary to continuously feed new electroplating solutions into the electroplating machine, and the old solutions must be discharged, recovered, filtered and reused to form a solution circulation system. The existing electroplating machine solution circulation system generally has only a simple circulation loop, and its circulation process is as follows: the electroplating solution in the solution tank is filtered by a filter and then fed into the electroplating machine, and the electroplating machine discharges the electroplating solution and returns it to the solution tank. This method has the following shortcomings: when the electroplating machine is shut down, the electroplating solution in the solution tank cannot circulate, resulting in deposition, which reduces the quality of the electroplating solution, thereby affecting the electroplating quality of the product. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the deficiencies in the prior art, a medicine solution circulation system for an electroplating machine is provided which can realize internal and external double circulation of the medicine solution, ensure sufficient fluidity of the medicine solution, and improve the quality of the medicine solution.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A medicine solution circulation system for an electroplating machine comprises a medicine solution tank and a filter, wherein the lateral space of the medicine solution tank is sequentially divided into an electrolytic chamber, a main medicine solution tank and a filtering medicine solution tank, wherein the electrolytic chamber and the main medicine solution tank are separated by a first partition, and the main medicine solution tank and the filtering medicine solution tank are separated by a second partition, wherein the height of the first partition is higher than the height of the second partition and lower than the depth of the medicine solution tank, wherein an electrolytic device is arranged in the electrolytic chamber, wherein the medicine solution in the electrolytic chamber will automatically overflow into the main medicine solution tank over the first partition when the electrolytic chamber is full, wherein the medicine solution in the main medicine solution tank is filtered by the filter and then sent into the filtering medicine solution tank, wherein the medicine solution in the filtering medicine solution tank will automatically overflow into the main medicine solution tank over the second partition when the filtering medicine solution tank is full, wherein the medicine solution in the filtering medicine solution tank is sent into the electroplating machine through a medicine solution pump, and the old medicine solution discharged from the electroplating machine is recovered into the electrolytic chamber.

[0006] Furthermore, it also includes a recovery tank, and the old medicine liquid discharged from the electroplating machine flows to the recovery tank by relying on its own weight, and the medicine liquid in the recovery tank is sent into the electrolysis chamber through a recovery pump.

[0007] Furthermore, it also includes a controller, an overflow compensation pipe is provided between the medicine tank and the recovery tank, a liquid level sensor is provided in the recovery tank for detecting whether the medicine level is too low, and the controller controls the start and stop of the recovery pump and the valve switch of the overflow compensation pipe according to the signal of the liquid level sensor.

[0008] Furthermore, the main medicine liquid tank and the filtered medicine liquid tank are provided with cold / hot water pipes for controlling the temperature of the medicine liquid.

[0009] Furthermore, the filter is provided with a filtering water inlet pipe and a filtering water outlet pipe, the filtering water inlet pipe extends into the bottom of the main medicine liquid tank, and a section of the filtering water inlet pipe located at the bottom of the main medicine liquid tank is provided with a plurality of fine holes evenly along the length direction, the filtering water outlet pipe extends into the bottom of the filtering medicine liquid tank, and a section of the filtering water outlet pipe located at the bottom of the filtering medicine liquid tank is provided with a plurality of fine holes evenly along the length direction.

[0010] Compared with the prior art, the advantages of the present invention are as follows: the present invention divides the medicine tank into three compartments, namely, the electrolysis compartment, the main medicine compartment and the filtering medicine compartment. The electrolysis compartment can electrolyze the recovered medicine to precipitate the plating metal ions in the medicine and reduce other ions (impurities), thereby playing the role of replenishing the plating metal ions and removing impurities. The medicine in the electrolysis compartment will automatically overflow to the main medicine compartment over the first partition when it is full, thus ensuring that the medicine is fully electrolyzed in the electrolysis compartment. The medicine in the main medicine compartment is first sent to the filtering medicine compartment through a filter, and the medicine in the filtering medicine compartment is then filtered out. When the medicine is full, it automatically overflows over the second partition into the main medicine tank, thus realizing the internal circulation flow of the medicine inside the medicine tank. Even when the electroplating machine is shut down, it can ensure the sufficient flow of the medicine to prevent sedimentation. When the electroplating machine is working, the medicine in the filtered medicine tank is sent into the electroplating machine through the medicine pump, and the old medicine discharged by the electroplating machine is recycled into the electrolysis tank, thus realizing the external circulation flow of the medicine when the electroplating machine is working. The internal and external double circulation of the medicine can keep the medicine in a circulating flow state, effectively ensuring the sufficient fluidity of the medicine and improving the quality of the medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention.

[0012] Figure 2 It is a schematic diagram of the working principle of the present invention.

[0013] Figure 3 It is a structural schematic diagram of the filtering water inlet pipe of the filter in the present invention extending into the main medicine water tank.

[0014] Legend: 1. Chemical solution tank; 11. Electrolysis chamber; 12. Main chemical solution tank; 13. Filter chemical solution tank; 14. First partition; 15. Second partition; 2. Filter; 21. Filter water inlet pipe; 22. Filter water outlet pipe; 23. Pores; 3. Electrolysis device; 4. Chemical solution pump; 5. Recovery tank; 6. Recovery pump; 61. Recovery pipe; 7. Overflow compensation pipe; 8. Cold / hot water pipe; 81. Coil; 9. Water supply pipe. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figure 1 , Figure 2 As shown, the liquid medicine circulation system for electroplating machine of the present invention comprises a liquid medicine tank 1 and a filter 2, wherein the filter 2 is used to filter the liquid medicine to filter out impurities generated by the liquid medicine during the electroplating process. The liquid medicine tank 1 is a square tank, and the lateral space of the liquid medicine tank 1 is sequentially divided into an electrolytic chamber 11, a main liquid medicine tank 12, and a filtering liquid medicine tank 13, wherein the electrolytic chamber 11 and the main liquid medicine tank 12 are separated by a first partition 14, and the main liquid medicine tank 12 and the filtering liquid medicine tank 13 are separated by a second partition 15, wherein the height of the first partition 14 is higher than the height of the second partition 15 and lower than the depth of the liquid medicine tank 1.

[0017] An electrolytic device 3 is provided in the electrolytic chamber 11, which is used to electrolyze the recovered medicine, precipitate the plating metal ions in the medicine, and reduce other ions (impurities), so as to replenish the plating metal ions and remove impurities. The electrolytic device 3 is a mature existing technology, and its specific structure and working principle are not repeated here. When the medicine in the electrolytic chamber 11 is full, it will automatically overflow to the main medicine chamber 12 over the first partition 14, and the medicine in the main medicine chamber 12 will be sent to the filtering medicine chamber 13 after being filtered by the filter 2. When the medicine in the filtering medicine chamber 13 is full, it will automatically overflow back to the main medicine chamber 12 over the second partition 15, and the medicine in the filtering medicine chamber 13 will be sent to the electroplating machine through the medicine pump 4, and the old medicine discharged by the electroplating machine is recycled to the electrolytic chamber 11.

[0018] In this embodiment, the medicine solution circulation system also includes a recovery tank 5. The height of the recovery tank 5 should ensure that the old medicine solution discharged from the electroplating machine can flow to the recovery tank 5 by its own gravity. The medicine solution in the recovery tank 5 is then sent into the electrolytic chamber 11 through the recovery pump 6 and the recovery pipe 61.

[0019] In this embodiment, the medicine circulation system further includes a controller (omitted in the figure), and an overflow compensation pipe 7 is provided between the medicine tank 1 and the recovery tank 5. A liquid level sensor (omitted in the figure) is provided in the recovery tank 5 to detect whether the liquid level of the medicine is too low. The controller controls the start and stop of the recovery pump 6 and the valve switch of the overflow compensation pipe 7 according to the signal of the liquid level sensor. When there is too little medicine in the recovery tank 5 and the liquid level is too low, the recovery pump 6 cannot extract the medicine. After a long time, the medicine sinking at the bottom of the recovery tank 5 will become "dead water" because it cannot flow. Therefore, the present invention sets a liquid level sensor in the recovery tank 5. When the liquid level sensor detects that the liquid level of the medicine is too low, it will send a signal to the controller, and the controller controls the recovery pump 6 to stop and controls the valve of the overflow compensation pipe 7 to open, so that the medicine in the medicine tank 1 flows into the recovery tank 5, so that the liquid level of the medicine in the recovery tank 5 rises; when the liquid level sensor detects that the liquid level of the medicine rises to the set value, the controller controls the recovery pump 6 to start extracting the medicine again, and controls the valve of the overflow compensation pipe 7 to close. This feedback control can avoid the "dead water" phenomenon in the recovery tank 5, ensuring that all the medicines are in a flowing state at all times.

[0020] In this embodiment, a cold / hot water pipe 8 for controlling the temperature of the medicine is provided in the main medicine chamber 12 and the filtered medicine chamber 13, and the temperature of the medicine is controlled by passing cold / hot water into the cold / hot water pipe 8. The cold / hot water pipe 8 is bent back and forth in the main medicine chamber 12 and the filtered medicine chamber 13 to form a coil 81 to ensure uniformity of cooling / heating.

[0021] In this embodiment, the filter 2 is provided with a filter water inlet pipe 21 and a filter water outlet pipe 22. Figure 3 As shown, the filtered water inlet pipe 21 extends into the bottom of the main medicine liquid tank 12, and a section of the filtered water inlet pipe 21 located at the bottom of the main medicine liquid tank 12 is uniformly provided with a plurality of fine holes 23 along the length direction, and the filtered water outlet pipe 22 extends into the bottom of the filtered medicine liquid tank 13, and a section of the filtered water outlet pipe 22 located at the bottom of the filtered medicine liquid tank 13 is uniformly provided with a plurality of fine holes 23 along the length direction. This arrangement can ensure the uniformity of the circulation of the medicine liquid.

[0022] In this embodiment, the electrolysis chamber 11 is provided with a water supply pipe 9 leading to the outside. When the electrolysis chamber 11 needs to be cleaned, an external water pipe can be connected to the water supply pipe 9.

[0023] The working process of the present invention is as follows:

[0024] 1. The filter 2 continuously pumps the medicine from the main medicine tank 12 to the filtering medicine tank 13, and the medicine is filtered by the filter 2.

[0025] 2. When the medicine in the filtered medicine bin 13 is full, it will automatically overflow back to the main medicine bin 12 (route A).

[0026] 3. When the electroplating machine is working, the liquid medicine is pumped from the filtered liquid medicine tank 13 to the electroplating machine through the liquid medicine pump 4 for operation.

[0027] 4. After the electroplating machine is finished working, the old liquid medicine discharged flows back to the recovery tank 5.

[0028] 5. The liquid medicine in the recovery tank 5 is sent to the electrolysis chamber 11 through the recovery pump 6 (route C).

[0029] 6. An electrolysis device 3 is provided in the electrolysis chamber 11 to electrolyze the medicine solution.

[0030] 7. When the liquid medicine in the electrolytic chamber 11 is full, it will automatically overflow into the main liquid medicine chamber 12 (route B)

[0031] 8. Repeat steps 1 to 7 continuously to complete the automatic circulation process of the medicine circulation system.

Claims

1. A liquid medicine circulation system for an electroplating machine, comprising a liquid medicine tank (1) and a filter (2), characterized in that: The transverse space of the medicine tank (1) is divided into an electrolysis chamber (11), a main medicine chamber (12), and a filtering medicine chamber (13) in sequence. The electrolysis chamber (11) and the main medicine chamber (12) are separated by a first partition (14), and the main medicine chamber (12) and the filtering medicine chamber (13) are separated by a second partition (15). The height of the first partition (14) is higher than the height of the second partition (15) and lower than the depth of the medicine tank (1). An electrolysis device (3) is provided in the electrolysis chamber (11). ), when the medicine in the electrolytic chamber (11) is full, it will automatically overflow over the first partition (14) to the main medicine chamber (12), the medicine in the main medicine chamber (12) will be filtered by the filter (2) and then sent to the filtering medicine chamber (13), when the medicine in the filtering medicine chamber (13) is full, it will automatically overflow over the second partition (15) back to the main medicine chamber (12), the medicine in the filtering medicine chamber (13) will be sent to the electroplating machine through the medicine pump (4), and the old medicine discharged by the electroplating machine will be recovered to the electrolytic chamber (11).

2. The liquid medicine circulation system for electroplating machine according to claim 1, characterized in that: It also includes a recovery tank (5), and the old medicine liquid discharged from the electroplating machine flows to the recovery tank (5) by its own weight, and the medicine liquid in the recovery tank (5) is sent to the electrolysis chamber (11) through a recovery pump (6).

3. The liquid medicine circulation system for electroplating machine according to claim 2, characterized in that: The invention also comprises a controller, wherein an overflow compensation pipe (7) is provided between the medicine tank (1) and the recovery tank (5) and is connected thereto, and a liquid level sensor is provided in the recovery tank (5) for detecting whether the liquid level of the medicine is too low, and the controller controls the start and stop of the recovery pump (6) and the opening and closing of the valve of the overflow compensation pipe (7) according to the signal of the liquid level sensor.

4. The liquid medicine circulation system for electroplating machine according to claim 1, 2 or 3, characterized in that: The main medicine liquid tank (12) and the filtered medicine liquid tank (13) are provided with cold / hot water pipes (8) for controlling the temperature of the medicine liquid.

5. The liquid medicine circulation system for electroplating machine according to claim 1, 2 or 3, characterized in that: The filter (2) is provided with a filter water inlet pipe (21) and a filter water outlet pipe (22); the filter water inlet pipe (21) extends into the bottom of the main medicine liquid tank (12); a section of the filter water inlet pipe (21) located at the bottom of the main medicine liquid tank (12) is provided with a plurality of fine holes (23) evenly distributed along the length direction; the filter water outlet pipe (22) extends into the bottom of the filter medicine liquid tank (13); a section of the filter water outlet pipe (22) located at the bottom of the filter medicine liquid tank (13) is provided with a plurality of fine holes (23) evenly distributed along the length direction.

Images