A developing solution supply device for PCB production

Abstract

The utility model is suitable for PCB board production technical field provides a kind of developing solution supply device for PCB board production, including placing assembly, the top of placing assembly is provided with liquid return subassembly, the side of placing assembly is provided with liquid supply subassembly, the liquid return subassembly includes liquid discharge groove, the liquid discharge groove is set to the top of placing table, and the liquid discharge groove is set below mounting bracket, the inside of the liquid discharge groove is provided with the first filter member for filtering developing solution, the liquid supply subassembly includes liquid storage pipe, the bottom of the liquid storage pipe is connected with the spray head for spraying developing solution, by setting first filter member, the primary filtration of developing solution can be realized, setting second filter member can realize the secondary filtration of developing solution, the filtration precision of developing solution can be improved by twice filtration, particle impurities and polymer residues are filtered out, reduce the influence of particle impurities and polymer residues to PCB board and spray head, prolong the service life of developing solution, reduce the waste of developing solution.

Description

Technical Field

[0001] This utility model relates to the field of PCB board manufacturing technology, and more specifically, it relates to a developing solution supply device for PCB board manufacturing. Background Technology

[0002] Multilayer PCBs are printed circuit boards with multiple layers of conductive patterns and insulating materials stacked alternately, and are widely used in electronic devices.

[0003] PCB development is a step in the PCB manufacturing process, following the exposure process. During exposure, ultraviolet light shines on the PCB coated with photoresist, causing a chemical reaction in the exposed areas of the photoresist. After exposure, the photoresist in the exposed areas is dissolved and removed by the developing solution, thereby exposing the underlying copper foil or other circuit patterns. The photoresist in the unexposed areas is retained, serving to protect the circuit patterns.

[0004] In the developing process, the developer is reused to improve its utilization rate. However, the recycled developer contains particulate impurities and polymers. The residue of particulate impurities and polymers can clog the spray nozzles or contaminate the surface of the PCB board, affecting the development of the PCB board and ultimately affecting its use. A developer supply device for PCB board production is proposed to improve the existing problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a developing solution supply device for PCB board production.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A developing solution supply device for PCB board production includes a placement component, a return component is provided on the top of the placement component, and a supply component is provided on one side of the placement component.

[0008] The placement assembly includes a placement platform, a mounting frame is provided on the top of the placement platform, a motor is provided on one side of the mounting frame, a drive wheel is provided at the output end of the motor, and a driven wheel is provided below the drive wheel.

[0009] The liquid return assembly includes a liquid discharge tank, which is located on top of the placement platform and below the mounting frame. The liquid discharge tank is equipped with a first filter element for filtering the developer.

[0010] The liquid supply assembly includes a liquid storage tube, and a nozzle for spraying developer is connected to the bottom of the liquid storage tube.

[0011] The present invention is further configured such that: the liquid supply assembly further includes a liquid storage mechanism, a return pipe is provided on one side of the liquid storage mechanism, a first pump body is provided at the end of the return pipe away from the liquid storage mechanism, the return pipe is connected to the first pump body and the liquid storage mechanism respectively, the first pump body is provided on one side of the liquid discharge tank, and the first pump body and the liquid discharge tank are connected by a liquid guide pipe.

[0012] By adopting the above technical solution, by setting the first pump body to be connected to the discharge tank, the first pump body is used to provide power for the recovery of the developer. When the first pump body is started, under the action of the first pump body, the developer flows from the inside of the discharge tank through the first pump body back to the inside of the storage mechanism, which can realize the recovery of the developer and reduce the waste of the developer. In addition, the first filter element is replaceable, and timely replacement of the first filter element can also improve the filtration effect.

[0013] The present invention is further configured such that: the liquid storage mechanism includes a liquid storage tank, the top of the liquid storage tank is provided with a tank cover, the inside of the liquid storage tank is provided with a second filter element, the center of the second filter element is provided with a connecting pipe for conveying developer, the side wall of the liquid storage tank is provided with a liquid inlet, and the bottom of the liquid inlet is provided with a liquid outlet.

[0014] By adopting the above technical solution, the inlet is used to replenish unused developer, which facilitates replenishing the amount of developer in the storage tank. The outlet is used to discharge expired or unused developer from the storage tank. The second filter element is snapped into the storage mechanism, and the second filter element and the connecting pipe are detachable. Therefore, after a period of use, the second filter element can be replaced in time to remove impurities inside the second filter element, improve filtration efficiency, and reduce the residue of impurities.

[0015] The present invention is further configured such that: a second pump body is provided on the top of the liquid storage mechanism, the second pump body is connected to the connecting pipe, the second pump body is connected to the infusion pipe, a sleeve is provided on the outer side of the infusion pipe near the liquid storage pipe, the sleeve is fixedly connected to the liquid storage pipe, and the infusion pipe is connected to the liquid storage pipe.

[0016] The present invention is further configured such that: a connecting roller is provided at the end of the liquid storage tube away from the sleeve, the connecting roller passes through the center of the driven wheel, and the connecting roller is connected to the driven wheel.

[0017] By adopting the above technical solution, the infusion tube is a flexible tube that can be adjusted according to the usage. The infusion tube passes through the mounting frame and the sleeve in sequence and is connected to the storage tube. The second pump provides power for the output of the developer. When the second pump is started, the developer in the storage tank flows into the storage tube through the infusion tube, and then the developer is sprayed onto the PCB board surface by the nozzle. In order to expand the spraying range during the spraying of the developer, the spraying angle needs to be adjusted. For this purpose, the sleeve is rotatably connected to the mounting frame, and the connecting roller is connected to the driven wheel. When the motor is started, the motor drives the driving wheel to rotate, and the driven wheel follows the driving wheel to rotate. The driving wheel then drives the connecting roller to rotate, and at the same time, the storage tube follows the connecting roller to rotate, thereby realizing the adjustment of the nozzle angle and expanding the spraying range of the nozzle.

[0018] The present invention is further configured such that: two sets of sliding grooves are symmetrically opened on the top of the liquid discharge tank, and a set of sliders are respectively arranged inside the two sets of sliding grooves.

[0019] The present invention is further configured such that: two sets of cylinders are symmetrically arranged on one side of the liquid discharge tank, the output ends of the two sets of cylinders are respectively connected to two sets of sliders, and a set of clamps is respectively arranged on the top of the two sets of sliders, and the two sets of clamps are used to clamp the PCB board.

[0020] By adopting the above technical solution, when the two sets of cylinders are activated, they drive the two sets of sliders to slide along the inside of the slide groove. At this time, the two sets of clamps move with the two sets of sliders, thereby adjusting the position of the PCB board. When spraying developer, a larger spraying area can be achieved, reducing the unsprayed areas of the PCB board and improving spraying efficiency. At the same time, since the position of the PCB board is adjustable, it is more convenient to pick up the PCB board, reducing the impact of position limitations on picking up the PCB board. When the movement of the PCB board is combined with the adjustment of the nozzle angle, a larger spraying area of ​​developer can be achieved, improving the developing efficiency.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The first filter element enables the initial filtration of the developer, while the second filter element enables secondary filtration. The second filter element has a higher filtration accuracy than the first filter element. By performing two filtrations, the filtration accuracy of the developer can be improved, removing particulate impurities and polymer residues, reducing the impact of particulate impurities and polymer residues on the PCB board and printhead, improving the efficiency of developer use, extending the service life of developer, and reducing developer waste.

[0023] 2. Combining the movement of the PCB board with the adjustment of the nozzle angle can achieve a wider range of developer spraying, thus improving developing efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a developing solution supply device for PCB board production according to the present invention.

[0025] Figure 2 for Figure 1 Isometric side view.

[0026] Figure 3 for Figure 1 The front view.

[0027] Figure 4 This is a partial structural diagram of the liquid supply component in this utility model.

[0028] Figure 5 for Figure 4 Top view.

[0029] Explanation of reference numerals in the attached drawings: 1. Placement component; 11. Placement platform; 12. Mounting bracket; 13. Motor; 14. Drive wheel; 15. Driven wheel;

[0030] 2. Liquid return assembly; 21. Liquid discharge tank; 22. First filter element; 23. Slide rail; 24. Sliding block; 25. Cylinder; 26. Clamp;

[0031] 3. Liquid supply assembly; 31. Liquid storage mechanism; 311. Liquid storage tank; 312. Liquid inlet; 313. Liquid outlet; 314. Connecting pipe; 315. Second filter element; 32. First pump body; 33. Second pump body; 34. Liquid delivery pipe; 35. Sleeve; 36. Liquid storage pipe; 37. Nozzle; 38. Return pipe. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] Please see Figure 1-5 The present invention provides the following technical solution:

[0035] Example 1, see Figure 1 A developing solution supply device for PCB board production includes a placement component 1, a return component 2 is provided on the top of the placement component 1, and a supply component 3 is provided on one side of the placement component 1.

[0036] See Figure 1 and Figure 2The placement component 1 includes a placement platform 11, a mounting frame 12 is provided on the top of the placement platform 11, a motor 13 is provided on one side of the mounting frame 12, a drive wheel 14 is provided at the output end of the motor 13, and a driven wheel 15 is provided below the drive wheel 14.

[0037] See Figure 1 and Figure 2 The liquid return assembly 2 includes a liquid discharge tank 21, which is located on the top of the placement platform 11 and below the mounting bracket 12. The liquid discharge tank 21 is provided with a first filter element 22 for filtering the developer.

[0038] See Figures 1-3 The liquid supply assembly 3 includes a liquid storage tube 36, and a nozzle 37 for spraying developer is connected to the bottom of the liquid storage tube 36.

[0039] See Figures 1-3 The liquid supply assembly 3 also includes a liquid storage mechanism 31. A return pipe 38 is provided on one side of the liquid storage mechanism 31. A first pump body 32 is provided at the end of the return pipe 38 away from the liquid storage mechanism 31. The return pipe 38 is connected to the first pump body 32 and the liquid storage mechanism 31 respectively. The first pump body 32 is located on one side of the liquid discharge tank 21. The first pump body 32 and the liquid discharge tank 21 are connected by a liquid guide pipe.

[0040] By connecting the first pump body 32 to the liquid discharge tank 21, the first pump body 32 provides power for the recovery of the developer. When the first pump body 32 is started, the developer flows from the inside of the liquid discharge tank 21 back to the inside of the liquid storage mechanism 31 through the first pump body 32, which can realize the recovery of the developer and reduce the waste of the developer. In addition, the first filter element 22 is replaceable. Timely replacement of the first filter element 22 can also improve the filtration effect.

[0041] See Figure 4 and Figure 5 The liquid storage mechanism 31 includes a liquid storage tank 311, a tank cover is provided on the top of the liquid storage tank 311, a second filter element 315 is provided inside the liquid storage tank 311, a connecting pipe 314 for conveying developer is provided in the center of the second filter element 315, an inlet 312 is provided on the side wall of the liquid storage tank 311, and an outlet 313 is provided below the inlet 312.

[0042] The inlet 312 is used to replenish unused developer, making it easier to replenish the amount of developer inside the storage tank 311. The outlet 313 is used to discharge expired or unused developer from the storage tank 311.

[0043] The second filter element 315 is snapped into the liquid storage mechanism 31, and the second filter element 315 is detachable from the connecting pipe 314. Therefore, after a period of use, the second filter element 315 can be replaced in time to remove impurities inside the second filter element 315, improve filtration efficiency, and reduce the residue of impurities.

[0044] The first filter element 22 can achieve the initial filtration of the developer, and the second filter element 315 can achieve the secondary filtration of the developer. The filtration accuracy of the second filter element 315 is higher than that of the first filter element 22. The filtration accuracy of the developer can be improved by two filtrations, removing particulate impurities and polymer residues, reducing the impact of particulate impurities and polymer residues on the PCB board and the print head 37, improving the efficiency of the developer, extending the service life of the developer, and reducing the waste of the developer.

[0045] See Figures 1-3 The top of the liquid storage mechanism 31 is provided with a second pump body 33, which is connected to the connecting pipe 314. The second pump body 33 is connected to the infusion pipe 34. The end of the infusion pipe 34 near the liquid storage pipe 36 is fitted with a sleeve 35, which is fixedly connected to the liquid storage pipe 36. The infusion pipe 34 is connected to the liquid storage pipe 36.

[0046] See Figures 1-3 A connecting roller is provided at the end of the liquid storage tube 36 away from the sleeve 35. The connecting roller passes through the center of the driven wheel 15 and is connected to the driven wheel 15.

[0047] The infusion tube 34 is a flexible tube that can be adjusted according to the usage. The infusion tube 34 passes through the mounting bracket 12 and the sleeve 35 in sequence and is connected to the storage tube 36. The second pump body 33 provides power for the output of the developer. When the second pump body 33 is started, the developer inside the storage tank 311 flows into the storage tube 36 through the infusion tube 34, and then the developer is sprayed onto the PCB board surface by the nozzle 37.

[0048] In order to expand the spraying range during the spraying of developer, it is necessary to adjust the spraying angle. For this purpose, the sleeve 35 is rotatably connected to the mounting bracket 12, and the connecting roller is connected to the driven wheel 15. When the motor 13 starts, the motor 13 drives the driving wheel 14 to rotate, and the driven wheel 15 follows the driving wheel 14 to rotate. The driving wheel 14 then drives the connecting roller to rotate, and at the same time, the liquid storage tube 36 follows the connecting roller to rotate, thereby realizing the adjustment of the nozzle 37 angle and expanding the spraying range of the nozzle 37.

[0049] See Figures 1-3 The top of the liquid discharge tank 21 is symmetrically provided with two sets of sliding grooves 23, and each set of sliding grooves 23 is provided with a set of sliders 24.

[0050] See Figures 1-3Two sets of cylinders 25 are symmetrically arranged on one side of the liquid discharge tank 21. The output ends of the two sets of cylinders 25 are respectively connected to two sets of sliders 24. A set of clamps 26 is provided on the top of each of the two sets of sliders 24. The two sets of clamps 26 are used to hold the PCB board.

[0051] When the two sets of cylinders 25 are activated, the two sets of cylinders 25 drive the two sets of sliders 24 to slide along the inside of the slide groove 23 respectively. At this time, the two sets of clamps 26 move with the two sets of sliders 24, thereby realizing the adjustment of the position of the PCB board. When spraying developer, a larger spraying range can be achieved, reducing the unsprayed areas of the PCB board and improving spraying efficiency. At the same time, since the position of the PCB board is adjustable, it is more convenient to pick up the PCB board, reducing the impact of position restrictions on picking up the PCB board.

[0052] When the movement of the PCB board is combined with the adjustment of the nozzle angle by 37 degrees, a larger area of ​​developer can be sprayed, improving the developing efficiency.

[0053] Specifically, the PCB board is first clamped by two sets of clamps 26 to reduce the shaking of the PCB board during the spraying of the developer solution. After the PCB board is stabilized, the second pump 33 is activated. Under the action of the second pump 33, the developer solution inside the storage tank 311 flows from the storage tank 311 through the connecting pipe 314 to the second pump 33, then through the delivery pipe 34 to the storage pipe 36, and finally is sprayed onto the surface of the PCB board by the nozzle 37. During the spraying process, excess developer solution drips onto the surface of the first filter element 22, and the developing solution is then sprayed onto the surface of the PCB board. After the liquid undergoes initial filtration through the first filter element 22, it falls to the bottom of the liquid discharge tank 21. Since the liquid discharge tank 21 is connected to the first pump body 32 through a liquid guide pipe, the pneumatic first pump body 32 drives the developer inside the liquid discharge tank 21 to flow back into the storage tank 311 through the backflow pipe, the first pump body 32, and the return pipe 38. The returned developer then undergoes secondary filtration through the second filter element 315, and the developer is finally recovered into the storage tank 311. When the liquid needs to be supplied again, the second pump body 33 can be restarted to supply the developer.

[0054] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A developing solution supply device for PCB board production, characterized in that: It includes a placement component (1), a return liquid component (2) is provided on the top of the placement component (1), and a supply liquid component (3) is provided on one side of the placement component (1). The placement assembly (1) includes a placement platform (11), a mounting frame (12) is provided on the top of the placement platform (11), a motor (13) is provided on one side of the mounting frame (12), a drive wheel (14) is provided at the output end of the motor (13), and a driven wheel (15) is provided below the drive wheel (14). The liquid return assembly (2) includes a liquid discharge tank (21), which is located on the top of the placement platform (11) and below the mounting frame (12). The liquid discharge tank (21) is provided with a first filter element (22) for filtering the developer. The liquid supply assembly (3) includes a liquid storage tube (36), and a nozzle (37) for spraying developer is connected to the bottom of the liquid storage tube (36).

2. The developing solution supply device for PCB board production according to claim 1, characterized in that: The liquid supply assembly (3) also includes a liquid storage mechanism (31). A return pipe (38) is provided on one side of the liquid storage mechanism (31). A first pump body (32) is provided at the end of the return pipe (38) away from the liquid storage mechanism (31). The return pipe (38) is connected to the first pump body (32) and the liquid storage mechanism (31) respectively. The first pump body (32) is located on one side of the liquid discharge tank (21). The first pump body (32) and the liquid discharge tank (21) are connected by a liquid guide pipe.

3. The developing solution supply device for PCB board production according to claim 2, characterized in that: The liquid storage mechanism (31) includes a liquid storage tank (311), the top of which is provided with a tank cover. A second filter element (315) is provided inside the liquid storage tank (311). A connecting pipe (314) for conveying developer is provided at the center of the second filter element (315). An inlet (312) is provided on the side wall of the liquid storage tank (311), and an outlet (313) is provided below the inlet (312).

4. The developing solution supply device for PCB board production according to claim 3, characterized in that: The top of the liquid storage mechanism (31) is provided with a second pump body (33), which is connected to the connecting pipe (314). The second pump body (33) is connected to the infusion pipe (34). The infusion pipe (34) is fitted with a sleeve (35) on the outside of one end near the liquid storage pipe (36). The sleeve (35) is fixedly connected to the liquid storage pipe (36). The infusion pipe (34) is connected to the liquid storage pipe (36).

5. The developing solution supply device for PCB board production according to claim 4, characterized in that: A connecting roller is provided at one end of the liquid storage tube (36) away from the sleeve (35). The connecting roller passes through the center of the driven wheel (15) and is connected to the driven wheel (15).

6. The developing solution supply device for PCB board production according to claim 1, characterized in that: The top of the liquid discharge tank (21) is symmetrically provided with two sets of sliding grooves (23), and each set of sliding grooves (23) is provided with a set of sliding blocks (24).

7. A developer supply device for PCB board production according to claim 6, characterized in that: Two sets of cylinders (25) are symmetrically arranged on one side of the liquid discharge tank (21). The output ends of the two sets of cylinders (25) are respectively connected to two sets of sliders (24). A set of clamps (26) is arranged on the top of each of the two sets of sliders (24). The two sets of clamps (26) are used to clamp the PCB board.

Images