Spraying disc for developing PCB (Printed Circuit Board)

Abstract

The invention provides a spraying disc for PCB development, and relates to the field of PCB processing, the spraying disc comprises a supporting seat, a mounting rack arranged on the supporting seat, a hollow plate arranged on the mounting rack, a nozzle arranged on the hollow plate, a fixing mechanism arranged on the supporting seat, and a wiping mechanism arranged on the supporting seat; and the fixing mechanism comprises a connecting rod arranged on the mounting frame and a fixing plate arranged on the connecting rod. In order to solve the problem that in the prior art, when a PCB is machined, liquid is likely to be accumulated on the surface of the PCB, and the accuracy of a circuit pattern is affected, the fixing mechanism and the wiping mechanism are arranged, so that the PCB can be conveniently wiped; according to the PCB machining device, accumulated liquid generated during PCB machining can be thoroughly discharged, the problem that in the prior art, liquid medicine on the surface of a PCB is not evenly distributed is solved through the arranged fixing mechanism and the arranged wiping mechanism, and the problem of manual discharging in the prior art is solved through the arranged fixing mechanism and the arranged wiping mechanism.

Description

Technical Field

[0001] The invention relates to the field of PCB board processing, and in particular to a spray plate for developing a PCB board. Background Art

[0002] The spray tray for PCB board development is an indispensable tool in the development process. It ensures the uniformity and efficiency of the PCB board development process by precisely controlling the spraying of the developer, thereby ensuring the quality and performance of the circuit board. However, liquid accumulation is easy to occur on the surface of the PCB board during processing. If there is liquid accumulation on the surface of the PCB board, the developer may not be able to evenly contact the board surface, resulting in incomplete development and failure to completely remove the unexposed photosensitive adhesive film, affecting the accuracy of the circuit pattern.

[0003] For example: The "new vertical segmented controlled developing spray plate" disclosed in the Chinese utility model patent (application number: 202220420377.2) discloses in its specification: In the prior art, the PCB board is horizontally conveyed and sprayed up and down, which causes liquid accumulation on the surface of the PCB board, affecting the reaction of the new solution, and the same spray pipe is used. For some precision PCB boards, due to different circuit distributions, the spraying requirements of various parts are also different. Using the same spray pipe is prone to cause short circuit or open circuit of some circuits. The above patent can prove the defects of the prior art.

[0004] Therefore, we have made improvements to this and proposed a spray tray for PCB board development. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that liquid is easily accumulated on the surface of a PCB board during processing, which affects the accuracy of the circuit pattern.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a spray plate for PCB board development to improve the above-mentioned problem.

[0007] The specific application is as follows: It includes a support base, a mounting frame arranged on the support base, a hollow plate arranged on the mounting frame, and a nozzle arranged on the hollow plate, and also includes a fixing mechanism arranged on the support base and a wiping mechanism arranged on the support base; The fixing mechanism comprises a connecting rod arranged on the mounting frame, a fixing plate arranged on the connecting rod, and a guiding component arranged on the supporting seat; The drying mechanism comprises a wiping plate arranged outside the mounting frame, a telescopic rod arranged on the supporting seat, a pushing component arranged on the supporting seat, a discharging component arranged on the mounting frame, and a cleaning component arranged on the supporting seat.

[0008] As a preferred technical solution of the present application, a medicine water pipe is fixedly passed through the hollow plate, and a plurality of the hollow plates and medicine water pipes are provided and distributed in a linear array on the mounting frame, and a reversing valve is provided on each of the plurality of medicine water pipes.

[0009] As a preferred technical solution of the present application, the guide component includes a guide groove arranged on the support seat, and the guide groove and the fixing plate are on the same horizontal line.

[0010] As a preferred technical solution of the present application, the wiping mechanism is arranged in a mirror image, and the wiping mechanism also includes a spring 1 arranged in the telescopic rod, a U-shaped frame is arranged at the end of the telescopic rod, an adjustment plate is arranged on the wiping plate, a rotating shaft is arranged on the adjustment plate, and a torsion spring is arranged on the outside of the rotating shaft.

[0011] As a preferred technical solution of the present application, the pushing component includes a slide groove arranged on both sides of the U-shaped frame, a slider is arranged on the slide groove, the rotating shaft is rotatably arranged on the slider, the two ends of the torsion spring are respectively connected to the corresponding surfaces of the adjustment plate and the slider, and a spring 2 is arranged on the corresponding surfaces of the slider and the slide groove.

[0012] As a preferred technical solution of the present application, the discharging component includes a triangular block arranged at the end of a wiping plate, the wiping plate is slidably arranged on the adjusting plate, an inclined groove is arranged on the fixed plate, the end of the triangular block is wedge-shaped, and the triangular block is slidably arranged on the inclined groove.

[0013] As a preferred technical solution of the present application, a strip groove is provided on the triangular block, and the material of the strip groove is rubber.

[0014] As a preferred technical solution of the present application, spring three is arranged on the corresponding surfaces of the wiper plate and the adjustment plate.

[0015] As a preferred technical solution of the present application, the material of the end of the triangular block is rubber, and the triangular block is adapted to the inclined groove.

[0016] As a preferred technical solution of the present application, the cleaning component includes a cavity arranged in the U-shaped frame, a guide column is arranged on the slider, the guide column is slidably arranged in the cavity, an extrusion plate is arranged on the guide column, the extrusion plate is slidably arranged in the cavity, and a one-way valve 1 and a one-way valve 2 are respectively arranged on both sides of the U-shaped frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: 1. In order to solve the problem in the prior art that liquid is easily accumulated on the surface of the PCB board during processing, which affects the accuracy of the circuit pattern, the present application provides a fixing mechanism and a drying mechanism, and the wiping board is closely attached to the PCB board, and the residual liquid on the surface of the PCB board is wiped off when the wiping board moves upward, so that the liquid accumulated during the processing of the PCB board can be completely discharged; 2. Through the setting of the fixing mechanism and the wiping mechanism, when the wiping plate moves downward, the wiping plate smoothes the PCB board, so that the medicine sprayed on the surface of the PCB board is evenly distributed, solving the problem of uneven distribution of medicine on the surface of the PCB board in the prior art; 3. Through the setting of the fixing mechanism and the wiping mechanism, the automatic unloading of the PCB board is realized by unfolding the wiping board, which solves the problem of manual unloading in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the spray plate for PCB board development provided in this application; Figure 2 A schematic diagram of the fixing mechanism structure of the spray plate for PCB board development provided in this application; Figure 3 A schematic diagram of the internal structure of the telescopic rod of the spray tray for PCB board development provided in this application; Figure 4 A schematic diagram of the structure of the discharge component of the spray tray for PCB board development provided in this application; Figure 5 A schematic diagram of the internal structure of the wiper plate of the spray tray for PCB board development provided in this application; Figure 6 The spray plate for PCB board development provided in this application Figure 5 Schematic diagram of the enlarged structure of the middle A area; Figure 7 A schematic diagram of the internal structure of the U-shaped frame of the spray tray for PCB board development provided in this application.

[0019] Indicated in the figure: 1. Support seat; 101. Mounting frame; 102. Hollow plate; 103. Nozzle; 104. Medicine pipe; 105. Reversing valve; 2. Fixing mechanism; 201. Connecting rod; 202. Fixing plate; 203. Guide component; 2031. Guide groove; 3. Wiping mechanism; 301. Wiping plate; 302. Telescopic rod; 303. Spring 1; 304. U-shaped frame; 305. Adjusting plate; 306. Rotating shaft; 307. Torsion spring; 308. Pushing component; 3081. Slide groove; 3082. Sliding block; 3083. Spring 2; 309. Discharging component; 3091. Triangular block; 3092. Inclined groove; 3093. Strip groove; 3094. Spring 3; 310. Cleaning component; 3101. Cavity; 3102. Guide column; 3103. Extrusion plate; 3104. One-way valve 1; 3015. One-way valve 2. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] As described in the background art, liquid is easily accumulated on the surface of the PCB during processing, which affects the accuracy of the circuit pattern.

[0022] In order to solve this technical problem, the present invention provides a spray plate for PCB board development, which is applied to PCB board processing.

[0023] Specifically, please refer to Figure 1-Figure 7 The spray plate for developing the PCB board specifically includes: a support seat 1, a mounting frame 101 arranged on the support seat 1, a hollow plate 102 arranged on the mounting frame 101 and a nozzle 103 arranged on the hollow plate 102, and also includes a fixing mechanism 2 arranged on the support seat 1, and a drying mechanism 3 arranged on the support seat 1; The fixing mechanism 2 includes a connecting rod 201 arranged on the mounting frame 101, a fixing plate 202 arranged on the connecting rod 201, and a guide component 203 arranged on the supporting seat 1; The drying mechanism 3 includes a wiping plate 301 arranged on the outside of the mounting frame 101, a telescopic rod 302 arranged on the support seat 1, a pushing component 308 arranged on the support seat 1, a discharging component 309 arranged on the mounting frame 101, and a cleaning component 310 arranged on the support seat 1.

[0024] The spray plate for developing a PCB board provided by the present invention solves the problem in the prior art that liquid is easily accumulated on the surface of the PCB board during processing, which affects the accuracy of the circuit pattern. The present application provides a fixing mechanism 2 and a drying mechanism 3, and the wiping plate 301 is closely attached to the PCB board, and the residual liquid on the surface of the PCB board is wiped off when the wiping plate 301 moves upward, so that the liquid accumulated during the processing of the PCB board can be completely discharged; By setting the fixing mechanism 2 and the wiping mechanism 3, when the wiping plate 301 moves downward, the wiping plate 301 smoothes the PCB board, so that the medicine sprayed on the surface of the PCB board is evenly distributed, solving the problem of uneven distribution of medicine on the surface of the PCB board in the prior art; By setting the fixing mechanism 2 and the wiping mechanism 3 and unfolding the wiping plate 301, the automatic unloading of the PCB board is realized, thus solving the problem of manual unloading in the prior art.

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] Example 1, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 A spray plate for developing a PCB board, wherein a medicine water pipe 104 is fixedly passed through a hollow plate 102, a plurality of hollow plates 102 and medicine water pipes 104 are provided and distributed on a mounting frame 101 in a linear array, a reversing valve 105 is provided on each of the plurality of medicine water pipes 104, and the reversing valve 105 on the medicine water pipe 104 is used to partition medicine water and high-pressure gas, so that the medicine water pipe 104 realizes the switching between medicine water and high-pressure gas by cooperating with the reversing valve 105, and the medicine water remaining on the surface of the PCB board is blown dry by the high-pressure gas; The guide component 203 includes a guide groove 2031 provided on the support seat 1, the guide groove 2031 and the fixing plate 202 are on the same horizontal line, the guide component 203 is used to guide the PCB board when feeding, and the guide groove 2031 is used to guide the PCB board and keep the PCB board in a vertical state when developing with the chemical solution; The wiping mechanism 3 is arranged in a mirror image, and the wiping mechanism 3 also includes a spring 303 arranged in the telescopic rod 302, a U-shaped frame 304 is arranged at the end of the telescopic rod 302, an adjustment plate 305 is arranged on the wiping plate 301, a rotating shaft 306 is arranged on the adjustment plate 305, and a torsion spring 307 is arranged outside the rotating shaft 306. The torsion spring 307 drives the wiping plate 301 to be close to the PCB board. When the PCB board is placed on the guide groove 2031, as shown in FIG. Figure 1 As shown, the PCB is located at the center of the device, and the nozzle 103 sprays liquid medicine, which impacts both sides of the PCB for development. At the same time, the liquid medicine impacts the wiping plate 301 and the U-shaped frame 304, so that the wiping plate 301 and the U-shaped frame 304 move downward synchronously, and then the telescopic rod 302 shrinks synchronously, and the wiping plate 301 moves downward and smoothes the surface of the PCB, so that the liquid medicine sprayed on the PCB is evenly distributed, preventing uneven development; When in use, the liquid medicine sprayed by the nozzle 103 develops both sides of the PCB board. At the same time, the liquid medicine provides driving force for the wiping plate 301 and the U-shaped frame 304. The surface of the PCB board is smoothed by the wiping plate 301, so that the liquid medicine on the surface of the PCB board is evenly distributed. When the nozzle 103 is closed, the spring 1 303 drives the telescopic rod 302, the wiping plate 301 and the U-shaped frame 304 to reset, and the liquid medicine pipe 104 is switched to high-pressure gas through the reversing valve 105, and the liquid medicine remaining on the surface of the PCB board is blown dry by the high-pressure gas.

[0029] Example 2, the spray plate for developing the PCB board provided in Example 1 is further optimized, specifically, as follows Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the push component 308 includes a slide groove 3081 arranged on both sides of the U-shaped frame 304, a slider 3082 is arranged on the slide groove 3081, and the rotating shaft 306 is rotatably arranged on the slider 3082. The two ends of the torsion spring 307 are respectively connected to the corresponding surfaces of the adjustment plate 305 and the slider 3082, and the corresponding surfaces of the slider 3082 and the slide groove 3081 are provided with a second spring 3083. When the nozzle 103 is closed, the spring 1 303 drives the telescopic rod 302, the wiper plate 301 and the U-shaped frame 304 to reset, and the wiper plate 301 is close to the PCB board and wipes the residual impurities on the surface thereof. At the same time, the wiper plate 301 wipes the residual liquid on the surface of the PCB board. Because the surface of the PCB board is uneven, it is buffered by the second spring 3083 on the slider 3082 to prevent the wiper plate 301 from getting stuck during the process of drying the PCB board. The discharging component 309 includes a triangular block 3091 arranged at the end of the wiping plate 301, the wiping plate 301 is slidably arranged on the adjusting plate 305, and an inclined groove 3092 is arranged on the fixing plate 202. The end of the triangular block 3091 is wedge-shaped, and the triangular block 3091 is slidably arranged on the inclined groove 3092. When the wiping plate 301 is reset, the triangular block 3091 on the wiping plate 301 cooperates with the inclined groove 3092, and the inclined groove 3092 drives the triangular block 3091 to unfold together with the wiping plate 301, and the unfolded triangular block 3091 pushes the PCB board out, thereby realizing the automatic discharging of the PCB board. When the device is not in use, the two wiping plates 301 cannot be attached to each other through the mutual interference of the triangular blocks 3091, which is convenient for the next feeding of the PCB board; The triangular block 3091 is provided with a strip groove 3093 made of rubber. When the PCB board is fed, the PCB board squeezes the strip groove 3093, causing the strip groove 3093 to deform and generate suction on the PCB board, so that the PCB board is fixed on the triangular block 3091, making the PCB board more stable during feeding and unloading; A spring 3094 is provided on the corresponding surfaces of the wiping plate 301 and the adjusting plate 305, and the wiping plate 301 is automatically reset after the material is discharged through the elasticity of the spring 3094; The end of the triangular block 3091 is made of rubber. The triangular block 3091 is adapted to the inclined groove 3092. The friction between the end of the triangular block 3091 and the inclined groove 3092 increases, so that the PCB board is discharged slowly. Then, the PCB board is blown dry with high-pressure gas. Directly blowing the surface of the PCB board dry may cause the residue on the surface of the PCB board to solidify on its surface, which may cause subsequent welding problems and circuit performance degradation. Therefore, the PCB board surface is pre-cleaned when it is wiped dry. At the same time, the residual medicine is removed. When the PCB board is discharged slowly, it is blown dry with high-pressure gas, so that the high-pressure gas does not need a lot of power to dry, and the residue on the surface of the PCB board is prevented from solidifying, which is more efficient. The cleaning component 310 includes a cavity 3101 arranged in the U-shaped frame 304, a guide column 3102 is arranged on the slider 3082, the guide column 3102 is slidably arranged in the cavity 3101, a pressing plate 3103 is arranged on the guide column 3102, the pressing plate 3103 is slidably arranged in the cavity 3101, and a one-way valve 1 3104 and a one-way valve 2 3015 are respectively arranged on both sides of the U-shaped frame 304, the one-way valve 1 3104 is used for air intake, and the one-way valve 2 3015 is used for air discharge. When the wiping plate 301 is reset and the surface of the PCB board is wiped dry and the residue is cleaned, the surface of the PCB board is uneven, and then the wiping plate 301 When resetting, the slider 3082 is driven to slide, and the slider 3082 drives the guide column 3102 to communicate with the extrusion plate 3103 to slide, so that the gas in the cavity 3101 is discharged from the second one-way valve 3015, and the gas discharged from the second one-way valve 3015 impacts the wiping plate 301. Because the wiping plate 301 is inclined, the discharged gas impacts the surface of the PCB board along the surface of the wiping plate 301, and cleans the hard-to-reach areas on the surface of the PCB board to prevent residues. At the same time, the gas discharged from the second one-way valve 3015 pre-blows away the residual liquid medicine on the surface of the PCB board to prevent water stains on the wiping plate 301 after wiping; By means of the wiping mechanism 3, when the wiping plate 301 moves downward, the PCB board is smoothed so that the liquid medicine on the surface of the PCB board is evenly distributed; when the wiping plate 301 moves upward, the liquid medicine remaining on the surface of the PCB board is wiped dry, and at the same time, the residue on the surface of the PCB board is removed; when the wiping plate 301 is completely reset, the wiping plate 301 is unfolded, and the wiping plate 301 drives the PCB board to be automatically discharged, thereby reducing the workload of the staff.

[0030] The use process of the spray plate for PCB board development provided by the present invention is as follows: When in use, the PCB board is guided along the guide groove 2031 and placed in the center of the device. At this time, the triangular block 3091 limits the PCB board. Through the elasticity of the torsion spring 307, the wiper plate 301 squeezes and fixes the PCB board, so that the PCB board is positioned in the center of the device. Figure 1As shown, the nozzle 103 is started, and the nozzle 103 sprays the liquid medicine, and the liquid medicine impacts the two sides of the PCB board for development. At the same time, the liquid medicine impacts the wiping plate 301 and the U-shaped frame 304, so that the wiping plate 301 and the U-shaped frame 304 move downward synchronously, and then the telescopic rod 302 shrinks synchronously, the wiping plate 301 moves downward and smoothes the surface of the PCB board, so that the liquid medicine sprayed on the PCB board is evenly distributed. At this time, the nozzle 103 is closed, and the spring 1 303 drives the telescopic rod 302, the wiping plate 301 and the U-shaped frame 304 to reset, and the wiping plate 301 is close to the PCB board and wipes the residual impurities on its surface. At the same time, the wiping plate 301 wipes the residual liquid medicine on the surface of the PCB board. Because the surface of the PCB board is uneven, the slider 3082 slides, and the spring 2 3082 on the slider 3082 083 is used to buffer it to prevent the wiping plate 301 from getting stuck during the process of wiping the PCB board. The slider 3082 drives the guide column 3102 to connect the extrusion plate 3103 to slide, so that the gas in the cavity 3101 is discharged from the one-way valve 3015. The gas discharged from the one-way valve 3015 impacts the wiping plate 301. Since the wiping plate 301 is inclined, the discharged gas impacts the surface of the PCB board along the surface of the wiping plate 301, and the hard-to-reach areas on the surface of the PCB board are cleaned. When the triangular block 3091 on the wiping plate 301 cooperates with the inclined groove 3092, the inclined groove 3092 drives the triangular block 3091 to expand together with the wiping plate 301, and the expanded triangular block 3091 and the wiping plate 301 cooperate to push the PCB board out, thereby realizing automatic discharge of the PCB board.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A spray plate for developing a PCB board, comprising a support seat (1), a mounting frame (101) arranged on the support seat (1), a hollow plate (102) arranged on the mounting frame (101), and a nozzle (103) arranged on the hollow plate (102), characterized in that: It also includes a fixing mechanism (2) arranged on the support base (1), and a drying mechanism (3) arranged on the support base (1); The fixing mechanism (2) comprises a connecting rod (201) arranged on the mounting frame (101), a fixing plate (202) arranged on the connecting rod (201), and a guide component (203) arranged on the supporting seat (1); The drying mechanism (3) comprises a wiping plate (301) arranged outside the mounting frame (101), a telescopic rod (302) arranged on the support seat (1), a pushing component (308) arranged on the support seat (1), a discharging component (309) arranged on the mounting frame (101), and a cleaning component (310) arranged on the support seat (1).

2. A spray plate for PCB board development according to claim 1, characterized in that: A medicine water pipe (104) is fixedly passed through the hollow plate (102); a plurality of the hollow plate (102) and the medicine water pipe (104) are provided and distributed in a linear array on the mounting frame (101); and a reversing valve (105) is provided on each of the plurality of medicine water pipes (104).

3. A spray plate for PCB board development according to claim 2, characterized in that: The guide component (203) comprises a guide groove (2031) arranged on the support seat (1), and the guide groove (2031) and the fixing plate (202) are on the same horizontal line.

4. A spray plate for PCB board development according to claim 3, characterized in that: The wiping mechanism (3) is arranged in a mirror image, and the wiping mechanism (3) further comprises a spring 1 (303) arranged in the telescopic rod (302), a U-shaped frame (304) is arranged at the end of the telescopic rod (302), an adjustment plate (305) is arranged on the wiping plate (301), a rotating shaft (306) is arranged on the adjustment plate (305), and a torsion spring (307) is arranged outside the rotating shaft (306).

5. A spray plate for PCB board development according to claim 4, characterized in that: The push component (308) comprises a slide groove (3081) arranged on both sides of the U-shaped frame (304), a slider (3082) is arranged on the slide groove (3081), the rotation shaft (306) is rotatably arranged on the slider (3082), the two ends of the torsion spring (307) are respectively connected to the corresponding surfaces of the adjustment plate (305) and the slider (3082), and a second spring (3083) is arranged on the corresponding surfaces of the slider (3082) and the slide groove (3081).

6. A spray plate for developing a PCB board according to claim 5, characterized in that: The material discharging component (309) comprises a triangular block (3091) arranged at the end of the wiping plate (301); the wiping plate (301) is slidably arranged on the adjustment plate (305); an inclined groove (3092) is arranged on the fixed plate (202); the end of the triangular block (3091) is wedge-shaped; the triangular block (3091) is slidably arranged on the inclined groove (3092).

7. A spray plate for developing a PCB board according to claim 6, characterized in that: The triangular block (3091) is provided with a strip groove (3093), and the material of the strip groove (3093) is rubber.

8. A spray plate for developing a PCB board according to claim 7, characterized in that: A spring three (3094) is provided on the corresponding surfaces of the wiping plate (301) and the adjusting plate (305).

9. A spray plate for developing a PCB board according to claim 8, characterized in that: The material of the end of the triangular block (3091) is rubber, and the triangular block (3091) is adapted to the inclined groove (3092).

10. A spray plate for developing a PCB board according to claim 9, characterized in that: The cleaning component (310) comprises a cavity (3101) arranged in the U-shaped frame (304); a guide column (3102) is arranged on the slider (3082); the guide column (3102) is slidably arranged in the cavity (3101); an extrusion plate (3103) is arranged on the guide column (3102); the extrusion plate (3103) is slidably arranged in the cavity (3101); and a one-way valve (3104) and a one-way valve (3015) are respectively arranged on both sides of the U-shaped frame (304).

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