A circulating filtration structure for PCB copper plating machine

Abstract

The utility model discloses a kind of circulating filtration structures for PCB copper plating machine, belong to PCB manufacturing equipment technical field, and its technical scheme main points include box, the inside fixedly connected with filter assembly of box, and the top of box is fixedly connected with liquid storage pool, the right side fixedly connected with flushing assembly of box, and flushing assembly is connected with filter assembly, the flushing assembly includes liquid storage tank, the bottom fixedly connected with infusion pump of liquid storage tank, and liquid storage tank is fixedly connected in the front side of box right side, the bottom fixedly connected with main pipe of infusion pump, and the side fixedly connected with shunt block of main pipe away from infusion pump, solve the filtering effect of existing circulating filtration structure is not good, in actual use process, due to lack of flushing structure, it is difficult to flush filter screen, cause impurity to accumulate and block filter screen, greatly weaken the filtering effect, affect the use of subsequent copper plating machine, reduce the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of PCB board manufacturing equipment technology, and in particular to a circulating filter structure for a PCB board copper plating machine. Background Technology

[0002] In the PCB copper plating process, the copper plating solution needs to be in continuous contact with the PCB surface to form a uniform copper layer on the hole walls and surface of the board. However, copper powder, impurity particles and organic pollutants are generated during the copper plating process. If they are not filtered in time, the impurities will adhere to the PCB surface or holes, resulting in defects such as pinholes, burrs and poor adhesion in the copper plating layer, which will affect the product qualification rate.

[0003] Most existing copper plating machines use a single filter screen for circulating filtration, which has low filtration accuracy and can only intercept large particles of impurities. Fine copper powder and colloidal impurities can easily penetrate the filter screen, resulting in insufficient cleanliness of the copper plating solution. An existing patent (publication number: CN210945808U) discloses an electrolyte circulation device for high-purity copper production. The device purifies the electrolyte by using a first filter structure and a second filter structure to remove impurities. The device can control the operation of the pump body by a control switch to transport the electrolyte, thereby effectively realizing the circulation, purification and utilization of the electrolyte. This effectively avoids the environmental pollution that may be caused by direct discharge, while ensuring the utilization rate of the electrolyte.

[0004] Existing patents offer solutions to the above problems, but their filtration effects are poor. In actual use, due to the lack of a rinsing structure, it is difficult to rinse the filter screen, causing impurities to accumulate and clog the filter screen, greatly weakening the filtration effect, affecting the use of the subsequent copper plating machine, and reducing the practicality of the device.

[0005] Therefore, a circulating filter structure for PCB copper plating machines is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a circulating filter structure for a PCB copper plating machine, which can solve the problems of poor filtration effect of existing circulating filter structures. In actual use, due to the lack of a rinsing structure, it is difficult to rinse the filter screen, resulting in the accumulation of impurities and clogging of the filter screen, which greatly weakens the filtration effect, affects the use of the subsequent copper plating machine, and reduces the practicality of the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a circulating filtration structure for a PCB copper plating machine, comprising a housing, a filter assembly fixedly connected inside the housing, a liquid storage tank fixedly connected to the top of the housing, a rinsing assembly fixedly connected to the right side of the housing and connected to the filter assembly, the rinsing assembly including a liquid storage tank, a liquid pump fixedly connected to the bottom of the liquid storage tank and the liquid storage tank fixedly connected to the front side of the right side of the housing, a main pipe fixedly connected to the bottom of the liquid pump, a diverter fixedly connected to the side of the main pipe away from the liquid pump, a plurality of branch pipes fixedly connected to the left side of the diverter, and a spray plate fixedly connected to the side of the branch pipes away from the diverter.

[0008] Preferably, the filtration assembly includes a filter box, a leak plate is fixedly connected to the top of the filter box, and a plurality of filter plates are fixedly connected inside the filter box. An electric valve is fixedly connected to the top of the leak plate, and the other end of the electric valve extends into the interior of the storage tank. A reflux pump is fixedly connected to the rear side of the bottom right side of the filter box, and an infusion pipe is fixedly connected to the output end of the reflux pump, with the other end of the infusion pipe extending into the interior of the storage tank.

[0009] Preferably, the number of filter plates is three, and the three filter plates are located at an angle inside the filter box, with the filtration accuracy of the filter plates increasing sequentially from top to bottom.

[0010] Preferably, the filter box has three discharge holes on the left side, and the discharge holes are located at the bottom of the filter plate slope. A baffle plate is rotatably connected inside the discharge hole, and a winding spring is fixedly connected to the top of the front and rear sides of the baffle plate.

[0011] Preferably, the number of spray plates is three, and the spray plates are located at the top of the filter plate slope.

[0012] Preferably, the filter box has a mounting hole on the left side for use with the spray plate, and the surface of the spray plate is in contact with the inner wall of the mounting hole.

[0013] Preferably, a discharge valve is fixedly connected to the bottom left side of the box, and a guide block is fixedly connected to the left side of the bottom of the inner wall of the box.

[0014] Preferably, a liquid detector is fixedly connected to the bottom of the front side of the housing, and the detection probe of the liquid detector extends into the interior of the filter housing. A controller is fixedly connected to the front side of the housing, and the controller is electrically connected to the liquid detector, the rinsing assembly, and the filter assembly.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This application sets up a filter assembly, which can filter the copper plating solution step by step through three filter plates with progressively increasing filtration precision from top to bottom. The inclined filter plates can guide impurities to flow towards the discharge hole, which is convenient for subsequent cleaning. At the same time, with the help of the reflux structure formed by the reflux pump and the infusion pipe, the filtered copper plating solution can be transported back to the storage tank, realizing the recycling of the copper plating solution and improving the copper plating quality of the PCB board. 2. This application, by setting up a rinsing component, enables the clean rinsing liquid in the storage tank to be delivered to the spray plate via the infusion pump through the main pipe, diverter block, and branch pipe. The spray plate then performs directional rinsing on the top of the slope of the filter plate, pushing the impurities accumulated on the surface of the filter plate toward the discharge hole. Under the action of rinsing pressure, the baffle plate overcomes the elastic force of the winding spring and opens, allowing the impurities to be discharged with the rinsing liquid. This achieves automatic cleaning of the filter plate, avoids impurities clogging the filter plate, ensures the stability of filtration efficiency, reduces the frequency of downtime maintenance, and improves the practicality of the device. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the circulating filter structure used in the PCB board copper plating machine of this utility model; Figure 2 This is a schematic diagram showing the connection of the housing, filter assembly, and rinsing assembly of this utility model; Figure 3 This is a schematic diagram showing the connection between the housing, liquid storage tank, and controller of this utility model; Figure 4 This is a schematic diagram of the structure of the filter assembly of this utility model; Figure 5 This is a schematic diagram of the rinsing assembly of this utility model.

[0017] In the diagram, 1. Box body; 2. Filter assembly; 201. Filter box; 202. Leakage plate; 203. Filter plate; 204. Electric valve; 205. Return pump; 206. Infusion pipe; 3. Storage tank; 4. Flushing assembly; 401. Storage tank; 402. Infusion pump; 403. Main pipe; 404. Diverter block; 405. Branch pipe; 406. Spray plate; 5. Discharge hole; 6. Baffle plate; 7. Winding spring; 8. Mounting hole; 9. Discharge valve; 10. Guide block; 11. Liquid detector; 12. Controller. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5 The present invention provides the following technical solution: A circulating filtration structure for a PCB copper plating machine includes a housing 1, a filter assembly 2 fixedly connected inside the housing 1, a liquid storage tank 3 fixedly connected to the top of the housing 1, a rinsing assembly 4 fixedly connected to the right side of the housing 1, and the rinsing assembly 4 connected to the filter assembly 2. The rinsing assembly 4 includes a liquid storage tank 401, a liquid pump 402 fixedly connected to the bottom of the liquid storage tank 401, and the liquid storage tank 401 is fixedly connected to the front side of the right side of the housing 1. A main pipe 403 is fixedly connected to the bottom of the liquid pump 402, and a diversion block 404 is fixedly connected to the side of the main pipe 403 away from the liquid pump 402. Several branch pipes 405 are fixedly connected to the left side of the diversion block 404, and a spray plate 406 is fixedly connected to the side of the branch pipes 405 away from the diversion block 404.

[0020] In this embodiment: through the coordinated use of three filter plates 203, the copper immersion solution can flow from top to bottom through the three-stage filter plates 203 with increasing filtration precision, enabling multi-stage filtration of the copper immersion solution and ensuring its cleanliness. Simultaneously, through the coordinated use of the return pump 205 and the infusion pipe 206, the filtered copper immersion solution is returned to the storage tank 3 via the infusion pipe 206, achieving copper immersion solution recycling, reducing reagent waste, and improving the practicality of the device. Then, through the coordinated use of the infusion pump 402 and the main pipe 403, the storage tank can be... The flushing liquid in the tank 401 is delivered to the diversion block 404. In conjunction with the diversion structure formed by the diversion block 404 and the branch pipe 405, the flushing liquid is smoothly and quickly sprayed onto the filter plate 203 through the spray plate 406, realizing the flushing operation of the three filter plates 203. Under the action of flushing pressure, the baffle plate 6 opens against the elastic force of the winding spring 7, and impurities are discharged with the flushing liquid, realizing automatic cleaning of the filter plate 203, avoiding impurities clogging the filter plate 203, ensuring the stability of filtration efficiency, reducing the frequency of downtime maintenance, and improving the ease of use of the device.

[0021] Specifically, such as Figure 4 As shown, the filter assembly 2 includes a filter box 201. A leak plate 202 is fixedly connected to the top of the filter box 201, and several filter plates 203 are fixedly connected inside the filter box 201. An electric valve 204 is fixedly connected to the top of the leak plate 202, and the other end of the electric valve 204 extends into the interior of the storage tank 3. A reflux pump 205 is fixedly connected to the rear side of the bottom right side of the filter box 201. An infusion pipe 206 is fixedly connected to the output end of the reflux pump 205, and the other end of the infusion pipe 206 extends into the interior of the storage tank 3.

[0022] Specifically, such as Figure 4As shown, there are three filter plates 203, which are located at an angle inside the filter box 201, and the filtration accuracy of the filter plates 203 increases sequentially from top to bottom.

[0023] Specifically, such as Figure 4 As shown, the filter box 201 has three discharge holes 5 on the left side, and the discharge holes 5 are located at the bottom of the slope of the filter plate 203. The discharge holes 5 are rotatably connected to the inside of the discharge holes 5, and the top of the front and rear sides of the baffle plate 6 are fixedly connected to the winding springs 7.

[0024] In this embodiment: through the coordinated use of three filter plates 203, the copper plating solution can flow from top to bottom through the three-stage filter plates 203 with increasing filtration precision, enabling multi-stage filtration of the copper plating solution and ensuring its cleanliness. Simultaneously, the three filter plates 203 are all designed with an incline, guiding impurities towards the discharge hole 5, preventing impurities from accumulating and clogging in the same place, ensuring smooth flow of the copper plating solution, facilitating subsequent cleaning, and improving the filtration effect. The filter plates 203, in conjunction with the baffle plate 6, form a discharge structure. Under rinsing pressure, the baffle plate 6 automatically opens against the force of the winding spring 7, allowing impurities to be quickly discharged with the rinsing liquid. After rinsing, the winding spring 7 rebounds, causing the baffle plate 6 to reset, preventing copper plating solution loss, ensuring the filtration effect of the copper plating solution, and improving the ease of use of the device.

[0025] Specifically, such as Figure 5 As shown, there are three spray plates 406, and the spray plates 406 are located at the top of the slope of the filter plate 203.

[0026] Specifically, such as Figure 4 As shown, the left side of the filter box 201 is provided with a mounting hole 8 for use with the spray plate 406, and the surface of the spray plate 406 is in contact with the inner wall of the mounting hole 8.

[0027] In this embodiment: by using the spray plate 406 in conjunction with the mounting hole 8, the spray plate 406 is tightly connected to the filter box 201, which can not only prevent the flushing liquid from leaking from the gaps and causing pressure loss, but also fix the spray plate 406 at the optimal flushing position at the top of the slope of the filter plate 203, which facilitates the impact operation of the filter plate 203, ensures the cleaning effect of impurities, and improves the ease of use of the flushing assembly 4.

[0028] Specifically, such as Figure 2 , Figure 3 As shown, a discharge valve 9 is fixedly connected to the bottom left side of the box 1, and a guide block 10 is fixedly connected to the left side of the bottom of the inner wall of the box 1.

[0029] Specifically, such as Figure 1 , Figure 2 , Figure 3As shown, a liquid detector 11 is fixedly connected to the bottom of the front side of the housing 1, and the detection probe of the liquid detector 11 extends into the interior of the filter box 201. A controller 12 is fixedly connected to the front side of the housing 1, and the controller 12 is electrically connected to the liquid detector 11, the flushing assembly 4, and the filter assembly 2.

[0030] In this embodiment: the liquid detector 11 can detect the turbidity and flow of the copper precipitate in the filter box 201 in real time and transmit the data to the controller 12. The controller 12 adjusts the operation of the equipment accordingly. It can transport the filtered copper precipitate to the storage tank 3 through the return pump 205 to realize the recycling of the copper precipitate and reduce the waste of reagents. It can also spray the rinsing liquid onto the filter plate 203 through the infusion pump 402. Under the action of rinsing pressure, the baffle plate 6 automatically opens against the elastic force of the winding spring 7, and the impurities are quickly discharged with the rinsing liquid. Then, guided by the guide block 10, it converges to the discharge valve 9 and is finally discharged out of the equipment through the discharge valve 9. The automatic linkage of filtration and rinsing is realized, which improves the practicality of the device.

[0031] Working Principle: During the copper plating process on the PCB board, the liquid storage tank 3, in conjunction with the electric valve 204, allows the copper plating solution to flow smoothly into the filter box 201. The electric valve 204 also controls the flow rate, directing the solution into the drain plate 202. This buffers the impact of the copper plating solution and ensures its even flow towards the filter plate 203, laying the foundation for subsequent multi-stage filtration. The copper plating solution flows sequentially from top to bottom through three filter plates 203 with increasing filtration precision, ensuring the cleanliness of the solution. Simultaneously, guided by the inclined filter plate 203, impurities flow towards the discharge hole 5, preventing accumulation and blockage in one place, thus ensuring smooth flow of the solution. The filtered clean solution collects at the bottom of the filter box 201. During the filtration process, the liquid detector 11 monitors the turbidity and flow of the copper plating solution in the filter box 201 in real time and transmits the data to the controller 12. The controller 12 then adjusts the flow accordingly. To ensure the smooth operation of the equipment, the return pump 205 is started to transport the filtered copper plating solution back to the storage tank 3, enabling the copper plating solution to be recycled and reused. When impurities are detected on the surface of the filter plate 203, causing excessive turbidity, the delivery pump 402 is started to transport the clean rinsing solution in the storage tank 401 to the diversion block 404. With the diversion structure formed by the diversion block 404 and the branch pipe 405, the rinsing solution is evenly sprayed onto the top of the slope of each filter plate 203 by the spray plate 406. Under the action of rinsing pressure, the baffle plate 6 opens against the elastic force of the winding spring 7. Impurities flow with the rinsing solution into the bottom of the tank 1 through the discharge hole 5, and are then guided to the discharge valve 9 through the guide block 10, realizing the automatic cleaning of the filter plate 203, avoiding clogging, and ensuring the filtration effect of the copper plating solution. After rinsing is completed, the winding spring 7 rebounds and drives the baffle plate 6 to reset, forming a closed environment to prevent the loss of copper plating solution and ensure the normal operation of the filter assembly 2, completing the entire copper plating solution recycling filtration process.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circulating filter structure for a PCB copper plating machine, comprising a housing (1), characterized in that: The filter assembly (2) is fixedly connected inside the box (1), and the liquid storage tank (3) is fixedly connected to the top of the box (1). The flushing assembly (4) is fixedly connected to the right side of the box (1), and the flushing assembly (4) is connected to the filter assembly (2). The flushing assembly (4) includes a liquid storage tank (401). The bottom of the liquid storage tank (401) is fixedly connected to an infusion pump (402), and the liquid storage tank (401) is fixedly connected to the front side of the right side of the box (1). The bottom of the infusion pump (402) is fixedly connected to a main pipe (403), and a diversion block (404) is fixedly connected to the side of the main pipe (403) away from the infusion pump (402). Several branch pipes (405) are fixedly connected to the left side of the diversion block (404), and a spray plate (406) is fixedly connected to the side of the branch pipe (405) away from the diversion block (404).

2. The circulating filter structure for a PCB copper plating machine according to claim 1, characterized in that: The filter assembly (2) includes a filter box (201), a drain plate (202) is fixedly connected to the top inside the filter box (201), and several filter plates (203) are fixedly connected inside the filter box (201). An electric valve (204) is fixedly connected to the top of the drain plate (202), and the other end of the electric valve (204) extends into the interior of the storage tank (3). A reflux pump (205) is fixedly connected to the rear side of the bottom right side of the filter box (201). An infusion pipe (206) is fixedly connected to the output end of the reflux pump (205), and the other end of the infusion pipe (206) extends into the interior of the storage tank (3).

3. The circulating filter structure for a PCB copper plating machine according to claim 2, characterized in that: The number of filter plates (203) is three. The three filter plates (203) are located in an inclined position inside the filter box (201), and the filtration accuracy of the filter plates (203) increases sequentially from top to bottom.

4. The circulating filter structure for a PCB copper plating machine according to claim 2, characterized in that: The filter box (201) has three discharge holes (5) on the left side, and the discharge holes (5) are located at the bottom of the slope of the filter plate (203). The discharge holes (5) are rotatably connected to a baffle plate (6), and the top of the front and rear sides of the baffle plate (6) are fixedly connected to a winding spring (7).

5. The circulating filter structure for a PCB copper plating machine according to claim 2, characterized in that: The number of spray plates (406) is three, and the spray plates (406) are located at the top of the slope of the filter plate (203).

6. The circulating filter structure for a PCB copper plating machine according to claim 5, characterized in that: The filter box (201) has a mounting hole (8) on the left side for use with the spray plate (406), and the surface of the spray plate (406) is in contact with the inner wall of the mounting hole (8).

7. The circulating filter structure for a PCB copper plating machine according to claim 1, characterized in that: A discharge valve (9) is fixedly connected to the bottom left side of the box (1), and a guide block (10) is fixedly connected to the bottom left side of the inner wall of the box (1).

8. The circulating filter structure for a PCB copper plating machine according to claim 1, characterized in that: A liquid detector (11) is fixedly connected to the bottom of the front side of the housing (1), and the detection probe of the liquid detector (11) extends into the interior of the filter box (201). A controller (12) is fixedly connected to the front side of the housing (1), and the controller (12) is electrically connected to the liquid detector (11), the flushing assembly (4), and the filter assembly (2).

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