Developing equipment for developing PCB (Printed Circuit Board)
By adopting an inclined plate and bottom cover spray hole design and conveying mechanism in the developing equipment, the problem of uneven distribution of developing solution is solved, realizing uniform development of PCB board and efficient photoresist dissolution, thus improving manufacturing precision and reliability.
Patent Information
- Application Number
- CN202423217041.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The uneven distribution of nozzles and spray angles in the existing spray system leads to uneven distribution of the developing solution on the PCB board surface, affecting the developing effect.
A developing device was designed, comprising a developing mechanism, a cleaning mechanism, and a drying mechanism. The design of spray holes on the inclined plate and the bottom cover allows the developing solution to form a gradient coverage on the PCB board surface. Combined with the continuous replenishment of the developing solution by the conveying mechanism, uniform distribution is ensured.
It achieves uniform coverage of the developer on the PCB board surface, improves the developing effect, ensures clear and accurate patterns, and enhances the manufacturing precision and reliability of the PCB board.
Smart Images
Figure CN223664903U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCB board developing technology, and more specifically, to a developing device for developing PCB boards. Background Technology
[0002] A PCB, or Printed Circuit Board, is an important component of electronic devices. It is mainly used to provide electrical connections and physical support for electronic components. The basic structure of a PCB includes an insulating substrate, conductive lines, and vias.
[0003] Currently, PCB development is a key step in the PCB manufacturing process. Based on the photosensitive properties of photoresist, the development process combines the photoresist-coated PCB with the developing solution, effectively removing unwanted photoresist and making the circuit board pattern clearer and more precise. This helps improve the manufacturing precision and quality of the circuit board, ensuring its stable and reliable performance.
[0004] However, the existing spraying method involves spraying developer onto the PCB board, where the developer reacts with the photoresist to dissolve it. However, the uneven distribution of nozzles and spray angles in the existing spraying system leads to uneven distribution of developer on the PCB board surface, resulting in uneven development and affecting the development effect. This paper proposes a developing device for PCB board development 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 device for developing PCB boards.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A developing apparatus for developing PCB boards includes a placement assembly, on top of which a developing assembly is disposed.
[0008] The placement assembly includes an installation platform, a feeding box on the top of the installation platform, a feeding port through the side wall of the feeding box, a conveying mechanism inside the feeding box, and a discharge box on the top of the installation platform, with a discharge port through the side wall of the discharge box.
[0009] The developing assembly includes a storage tank for storing developing solution. A developing mechanism is located on one side of the storage tank. A cleaning mechanism is located on the side of the developing mechanism away from the feeding tank. A drying mechanism is located on the side of the cleaning mechanism away from the developing mechanism.
[0010] By adopting the above technical solution, the developing mechanism and the storage tank are connected by a pipeline. The developing solution inside the storage tank can be transported from the storage tank to the developing mechanism through the pipeline. The developing mechanism is connected to a transfer pump, which can spray the developing solution onto the PCB board through the input pump. The cleaning mechanism is equipped with a device for cleaning the PCB board, and the drying mechanism is equipped with a hot air dryer to dry the PCB board.
[0011] The present invention is further configured such that: the discharge box and the feed box are symmetrical, and the conveying mechanism extends from the feed box position to the discharge box position in a straight line.
[0012] By adopting the above technical solution, the PCB board can be transported during the development process by setting up a conveying mechanism. The PCB board can pass through the inlet of the feeding box in sequence through the developing mechanism, the cleaning mechanism, and the drying mechanism, and finally be output from the outlet of the discharging box for collection or to enter the next production process. During the movement of the conveying mechanism, the conveying mechanism will drive the PCB board to move, so that the developing solution on the PCB board can be continuously renewed, accelerating the dissolution process of the photoresist.
[0013] The present invention is further configured such that: the developing mechanism is provided with a plurality of spray heads inside, and the spray heads are connected to the storage tank through pipes.
[0014] The present invention is further configured such that: the spray head includes a housing, and two sets of end caps are symmetrically arranged at both ends of the housing, one set of the end caps having a liquid inlet through it, and the other set of the end caps being sealed.
[0015] The present invention is further configured such that: two sets of inclined plates are symmetrically arranged at the bottom of the shell, and a plurality of first spray holes are respectively arranged on the two sets of inclined plates.
[0016] The present invention is further configured such that: the bottom of the two sets of inclined plates is provided with a bottom cover, and a plurality of second spray holes are provided through the bottom cover.
[0017] By adopting the above technical solution, the first spray hole is set on the inclined plate, and the second spray hole is set on the bottom cover. The position of the first spray hole is higher than that of the second spray hole. During this spraying process, the developer forms a gradual coverage pattern on the PCB board surface, which helps to effectively cover the PCB board area and avoid incomplete edge development. At the same time, because it can better cover the key areas and complex shapes of the PCB board, the reaction between the developer and the unexposed photoresist is more complete, solving the problem of uneven developer distribution. With multiple sets of first and second spray holes, the developer can be dispersed into multiple small liquid streams, which can form a more uniform distribution on the PCB board surface.
[0018] In summary, this application includes at least one of the following beneficial technical effects:
[0019] 1. By setting the position of the first spray hole higher than that of the second spray hole, the developer forms a gradual coverage pattern on the PCB board surface during the spraying process. This helps to effectively cover the PCB board area and avoid incomplete edge development. At the same time, because it can better cover the key areas and complex shapes of the PCB board, the developer reacts more fully with the unexposed photoresist, solving the problem of uneven developer distribution.
[0020] 2. By setting up a conveying mechanism, the PCB board will be moved, so that the developer on the PCB board can be continuously renewed, accelerating the dissolution process of the photoresist. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of a developing device for developing PCB boards according to the present invention.
[0022] Figure 2 In this utility model Figure 1 Isometric side view.
[0023] Figure 3 In this utility model Figure 2 A schematic diagram of the explosion structure.
[0024] Figure 4 In this utility model Figure 3 The front view.
[0025] Figure 5 This is a schematic diagram of the structure of the spray head in this utility model.
[0026] Explanation of reference numerals in the attached drawings: 1. Component placement; 11. Mounting platform; 12. Feed hopper; 13. Discharge hopper; 14. Conveying mechanism;
[0027] 2. Developing assembly; 21. Storage tank; 23. Developing mechanism; 24. Spray head; 241. Housing; 242. End cap; 243. Liquid inlet; 244. Inclined plate; 245. First spray hole; 246. Bottom cover; 247. Second spray hole; 25. Cleaning mechanism; 26. Drying mechanism. Detailed Implementation
[0028] 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.
[0029] 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.
[0030] Example 1, please refer to Figure 1-5 The present invention provides the following technical solution:
[0031] See Figure 1 A developing device for developing PCB boards includes a placement component 1, with a developing component 2 disposed on top of the placement component 1.
[0032] See Figure 2 and Figure 3 The placement component 1 includes a mounting platform 11, a feeding box 12 is provided on the top of the mounting platform 11, a feeding port is provided through the side wall of the feeding box 12, a conveying mechanism 14 is provided inside the feeding box 12, a discharging box 13 is also provided on the top of the mounting platform 11, a discharging port is provided through the side wall of the discharging box 13, the mounting platform 11 is connected to the developing mechanism 23, and a conical collection tank is provided at the bottom of the mounting platform 11, through which the used developing solution can be collected.
[0033] See Figure 2-4 The developing assembly 2 includes a storage tank 21 for storing developing solution. A developing mechanism 23 is provided on one side of the storage tank 21. The developing mechanism 23 is connected to the storage tank 21 through a pipe. The developing solution inside the storage tank 21 can be transported to the developing mechanism 23 through the pipe. The developing mechanism 23 is connected to a delivery pump. The developing mechanism 23 can spray the developing solution onto the PCB board through the input pump. A cleaning mechanism 25 is provided on the side of the developing mechanism 23 away from the feed tank 12. A drying mechanism 26 is provided on the side of the cleaning mechanism 25 away from the developing mechanism 23. The cleaning mechanism 25 is equipped with a device for cleaning the PCB board. The drying mechanism 26 is equipped with a hot air dryer to dry the PCB board.
[0034] The PCB development process is as follows:
[0035] When the PCB board reaches the bottom of the developing mechanism 23, the developing mechanism 23 sprays developing solution onto the PCB board to dissolve the photoresist. After the PCB board is developed, there may be residual developing solution on the PCB board, which needs to be cleaned. The PCB board is cleaned by the cleaning mechanism 25. After cleaning, the PCB board is dried by the drying mechanism 26 to remove the surface moisture. The dried PCB board can then enter the next production process.
[0036] See Figure 2-4The discharge box 13 is symmetrical to the feed box 12. The conveying mechanism 14 extends from the feed box 12 to the discharge box 13 in a straight line. The conveying mechanism 14 consists of a drive motor, a transmission mechanism, and a conveyor belt. The conveyor belt extends from the feed box 12 to the discharge box 13 in a straight line. The conveying mechanism 14 is driven by the drive motor. By setting the conveying mechanism 14, the needs of conveying PCB boards during the development process can be met. The PCB board can pass through the feed port of the feed box 12 in sequence through the development mechanism 23, the cleaning mechanism 25, and the drying mechanism 26, and finally be output from the discharge port of the discharge box 13 for collection or to enter the next production process. During the movement of the conveying mechanism 14, the conveying mechanism 14 will drive the PCB board to move, so that the developer on the PCB board can be continuously renewed, accelerating the dissolution process of the photoresist.
[0037] See Figure 2-4 The developing unit 23 is equipped with several spray heads 24, which are connected to the storage tank 21 through pipes.
[0038] See Figure 5 The spray head 24 includes a housing 241. Two sets of end caps 242 are symmetrically arranged at both ends of the housing 241. One set of end caps 242 has a liquid inlet 243 through it, while the other set of end caps 242 is sealed. The liquid inlet 243 is connected to the storage tank 21 through a pipe. The developer solution in the storage tank 21 is transported into the housing 241 through the pipe.
[0039] See Figure 5 The bottom of the shell 241 is symmetrically provided with two sets of inclined plates 244, and each of the two sets of inclined plates is provided with a number of first spray holes 245.
[0040] See Figure 5 The bottom of the two sets of inclined plates 244 is provided with a bottom cover 246, and a number of second spray holes 247 are opened through the bottom cover 246.
[0041] The developer inside the housing 241 is sprayed onto the PCB board through the first spray hole 245 and the second spray hole 247 to dissolve the photoresist, effectively removing unwanted photoresist and making the pattern on the PCB board clearer and more accurate. This helps to improve the manufacturing precision and quality of the PCB board and ensures the stable and reliable performance of the PCB.
[0042] The first spray hole 245 is located on the inclined plate 244, and the second spray hole 247 is located on the bottom cover 246. The position of the first spray hole 245 is higher than that of the second spray hole 247. During this spraying process, the developer forms a gradual coverage pattern on the PCB board surface, which helps to effectively cover the PCB board area and avoid incomplete edge development. At the same time, because it can better cover the key areas and complex shapes of the PCB board, the developer reacts more fully with the unexposed photoresist, solving the problem of uneven developer distribution.
[0043] In addition, multiple sets of the first spray hole 245 and the second spray hole 247 are provided. In this case, the developer can be dispersed into multiple small liquid streams, which can form a more uniform distribution on the PCB board surface.
[0044] Specifically, the PCB board enters through the inlet of the feeding box 12 and then reaches the bottom of the developing mechanism 23. The developing mechanism 23 sprays developing solution onto the PCB board to dissolve the photoresist. After the PCB board is developed, there may be residual developing solution on the PCB board, which needs to be cleaned. The PCB board is cleaned by the cleaning mechanism 25. After cleaning, the PCB board is dried by the drying mechanism 26 to remove surface moisture. The dried PCB board can then be output from the outlet of the discharge box 13 and then collected or enter the next production process.
[0045] 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 apparatus for developing PCB boards, characterized in that: It includes a placement component (1), and a developing component (2) is disposed on the top of the placement component (1); The placement component (1) includes a mounting platform (11), a feeding box (12) is provided on the top of the mounting platform (11), a feeding port is provided through the side wall of the feeding box (12), a conveying mechanism (14) is provided inside the feeding box (12), and a discharge box (13) is also provided on the top of the mounting platform (11), a discharge port is provided through the side wall of the discharge box (13); The developing assembly (2) includes a storage tank (21) for storing developing solution. A developing mechanism (23) is provided on one side of the storage tank (21). A cleaning mechanism (25) is provided on the side of the developing mechanism (23) away from the feed tank (12). A drying mechanism (26) is provided on the side of the cleaning mechanism (25) away from the developing mechanism (23).
2. The developing apparatus for PCB board developing according to claim 1, characterized in that: The discharge box (13) is symmetrical to the feed box (12), and the conveying mechanism (14) extends from the feed box (12) to the discharge box (13) in a straight line.
3. A developing apparatus for PCB board developing according to claim 1, characterized in that: The developing mechanism (23) is equipped with several spray heads (24), which are connected to the storage tank (21) through pipes.
4. A developing apparatus for PCB board developing according to claim 3, characterized in that: The spray head (24) includes a housing (241), and two sets of end caps (242) are symmetrically arranged at both ends of the housing (241). One set of end caps (242) has a liquid inlet (243) through it, and the other set of end caps (242) is sealed.
5. A developing apparatus for PCB board developing according to claim 4, characterized in that: The bottom of the housing (241) is symmetrically provided with two sets of inclined plates (244), and each of the two sets of inclined plates is provided with a plurality of first spray holes (245).
6. A developing apparatus for PCB board developing according to claim 5, characterized in that: The bottom of the two sets of inclined plates (244) is provided with a bottom cover (246), and a number of second spray holes (247) are provided through the bottom cover (246).