PCB etching microetchant feeding device

Abstract

The utility model discloses a PCB (printed circuit board) etching microetchant feeding device, which relates to the technical field of PCBs and comprises a supporting assembly, the supporting assembly comprises supporting plates, a top plate is fixedly connected between the tops of the left supporting plate and the right supporting plate, a working table and a supporting plate are fixedly connected between the inner walls of the left supporting plate and the right supporting plate, the working table is positioned below the supporting plate, and the supporting plate is positioned below the working table. According to the PCB etching microetchant feeding device, a controller is used for controlling opening and closing of a first electric valve, a second electric valve, a third electric valve, a fourth electric valve and a fifth electric valve, so that discharging and accumulation of solutions or reagents in the reaction barrel and the cleaning barrel are controlled; the micro-etching agent solution in the reaction barrel is blended through the cooperation of the liquid concentration detector and the medicine liquid concentration detection probe, so that timing replacement of the micro-etching agent solution in the reaction barrel and pure water in the cleaning barrel is realized.

Description

Technical Field

[0001] This utility model relates to the field of PCB circuit board technology, specifically a PCB board etching micro-etching agent dispensing device. Background Technology

[0002] A PCB (Printed Circuit Board) is an important component in electronic devices, primarily used for the electrical connection and support of electronic components. By patterning conductive copper foil onto insulating material, a PCB forms the electrical connections between electronic components and is widely used in various electronic devices, such as home appliances, smart devices, and industrial control systems.

[0003] The patent publication number "CN221748663U" discloses a "PCB circuit board etching device." This design includes a platform board with legs on its lower side. An etching tank, a cleaning tank, and a support platform are fixed to the upper side of the platform board. A mounting bracket is fixed to the lower surface of the platform board on the lower side of the etching tank. A first motor is fixed to the mounting bracket, and its upper output is connected to a stirring blade located inside the etching tank. A wave-generating pump is installed inside the cleaning tank. This design, through a tight, cyclical processing flow, allows for seamless transitions between etching and cleaning processes, significantly reducing unnecessary waiting time between the etching and cleaning tanks and improving overall processing efficiency. However, due to the short lifespan of the micro-etching solution, prolonged storage can cause hydrogen peroxide to degrade. Therefore, it is necessary to periodically drain and replenish the micro-etching agent liquid inside the reaction tank. This design lacks a device for replacing the micro-etching agent solution. Furthermore, after etching and cleaning the PCB board, it is necessary to manually remove the PCB board from between the clamps, which is time-consuming and labor-intensive.

[0004] To address these issues, this invention provides a PCB board etching micro-etching agent dispensing device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a PCB board etching micro-etching agent dispensing device, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PCB board etching micro-etching agent dispensing device, comprising a support assembly, the support assembly including a support plate, a top plate fixedly connected between the tops of the left and right support plates, a workbench and a support plate fixedly connected between the inner walls of the left and right support plates, the workbench located below the support plate, a cleaning tank and a reaction tank fixedly installed on the top of the workbench, a placement platform fixedly connected to one side of the top of the workbench, the cleaning tank located between the placement platform and the reaction tank, a dispensing assembly provided on the top of the support plate, the dispensing assembly including a pure water tank fixedly installed on the top of the support plate, a reagent tank fixedly installed on the top of the pure water tank, and the... The bottom of the pure water tank is fixedly connected to a first inlet pipe and a second inlet pipe. A first electric valve and a second electric valve are fixedly installed on the outer side of the first inlet pipe and the second inlet pipe, respectively. The first inlet pipe and the second inlet pipe both pass through the support plate and are fixedly connected to the rear outer wall of the cleaning tank and the reaction tank, respectively. A feeding pipe is fixedly connected to the lower part of the outer wall of the reagent tank. The bottom end of the feeding pipe is located inside the reaction tank. A third electric valve is fixedly installed on the outer side of the feeding pipe. The rear bottom of the outer wall of the cleaning tank and the reaction tank are fixedly connected to a first outlet pipe and a second outlet pipe, respectively. A fourth electric valve and a fifth electric valve are fixedly installed on the outer side of the first outlet pipe and the second outlet pipe, respectively.

[0007] Furthermore, the controller controls the opening and closing of the first, second, third, fourth, and fifth electric valves, thereby controlling the discharge and accumulation of solutions or reagents inside the reaction tank and cleaning tank.

[0008] Using the above technical solution, a liquid concentration detector is fixedly installed on the top of the top plate, and a drug concentration detection probe is fixedly installed on the left side of the liquid concentration detector. The drug concentration detection probe penetrates the top plate and is located inside the reaction tank. A controller is fixedly installed on the outer wall of the right support plate.

[0009] Furthermore, the micro-etchant solution inside the reaction tank is adjusted by using a liquid concentration detector and a drug concentration detection probe.

[0010] Using the above technical solution, a protective plate is fixedly connected to the bottom of the reaction tank, and a support and a first motor are fixedly installed at the bottom of the workbench. The first motor is located inside the support, and the output end of the first motor passes through the bottom of the workbench and the reaction tank and is fixedly connected to a stirring blade. The stirring blade is located inside the protective plate.

[0011] Furthermore, by starting the first motor, its output end drives the stirring blade to rotate inside the protective plate, mixing the reagents and pure water that have entered the reaction tank evenly.

[0012] Using the above technical solution, a conveying assembly is provided on the top of the top plate. The conveying assembly includes a fixing block, which is fixedly connected to the bottom of the top plate. A stepper motor is fixedly installed on the top of the top plate. The output end of the stepper motor passes through the top plate and is fixedly connected to a rotating shaft. Both left and right rotating shafts are rotatably connected to the bottom of the top plate. Pulleys are rotatably connected to the outer sides of both left and right rotating shafts. A belt is rotatably connected between the left and right pulleys.

[0013] Furthermore, by starting the stepper motor, its output end drives the shaft to rotate, which in turn drives the pulley to rotate, and thus the belt to rotate.

[0014] Using the above technical solution, a first electric push rod is fixedly installed on the inner side of the belt, and a connecting plate is fixedly connected to the output end of each of the left and right first electric push rods. Gears are rotatably connected to the outer side of the output end of each of the left and right first electric push rods.

[0015] Furthermore, by activating the first electric actuator, its output end drives the connecting plate fixed at the bottom to move up and down, thus completing the etching and cleaning process.

[0016] Using the above technical solution, the top of the connecting plate is respectively provided with a sliding groove and a slot. A slider is slidably connected inside the left and right sliding grooves. A push block is fixedly connected to the top of the left and right sliders. A rack is fixedly connected to one inner end of the left and right push blocks. The front and rear racks mesh with gears. A slot is fixedly connected to the bottom of the front and rear racks and slidably connected inside the slot. A connecting block is fixedly connected to the center of the outer side of the rear rack. A small electric actuator is fixedly installed on one side of the top of the connecting plate. The output end of the small electric actuator is fixedly connected to one side of the connecting block. A clamping plate is fixedly connected to the bottom of the left and right sliders. A layered pad is fixedly connected to the inner side of the left and right clamping plates.

[0017] Furthermore, by activating a small electric actuator, the output end of which drives the connecting block to move left and right, the distance between the left and right clamping plates can be adjusted.

[0018] Beneficial effects

[0019] This invention provides a PCB board etching micro-etching agent dispensing device. Compared with the prior art, it has the following advantages:

[0020] 1. This PCB board etching micro-etching agent dispensing device controls the opening and closing of a first electric valve, a second electric valve, a third electric valve, a fourth electric valve, and a fifth electric valve via a controller, thereby controlling the discharge and accumulation of solutions or reagents inside the reaction tank and the cleaning tank. By cooperating with a liquid concentration detector and a reagent concentration detection probe, the micro-etching agent solution inside the reaction tank is adjusted, realizing the timed replacement of the micro-etching agent solution inside the reaction tank and the pure water inside the cleaning tank.

[0021] 2. This PCB board etching micro-etching agent dispensing device, by activating a small electric push rod, causes its output end to drive the connecting block to move left and right, thereby causing the connecting block to drive one side rack to move left and right, which in turn causes the gear to rotate and drive the other side rack to move left and right. The left and right sliders drive the left and right clamping plates at the bottom to move, thereby adjusting the distance between the left and right layered pads, realizing the automatic collection of the PCB board after etching and cleaning. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a perspective view of the external front structure of this utility model;

[0024] Figure 2 This is a partial structural diagram of the feeding component of this utility model;

[0025] Figure 3 This is a perspective view of the external rear structure of this utility model;

[0026] Figure 4 This is an enlarged view of the internal structure at point A of this utility model;

[0027] Figure 5 This is a front sectional view of the external structure of this utility model;

[0028] Figure 6 This is an enlarged view of the internal structure at point B of this utility model.

[0029] In the diagram: 1. Support assembly; 11. Support plate; 12. Top plate; 13. Workbench; 14. Support plate; 15. Placement platform; 16. Cleaning tank; 17. Reaction tank; 2. Feeding assembly; 21. Pure water tank; 22. Reagent tank; 23. First water inlet pipe; 24. Second water inlet pipe; 25. First electric valve; 26. Second electric valve; 27. Feeding pipe; 28. Third electric valve; 29. ​​First water outlet pipe; 210. Second water outlet pipe; 211. Fourth electric valve; 212. Fifth electric valve; 213. Liquid concentration detection. 214. Drug concentration detection probe; 215. Protective plate; 216. Support; 217. First motor; 218. Stirring blade; 3. Conveying assembly; 31. Fixing block; 32. Pulley; 33. Belt; 34. Stepper motor; 35. First electric actuator; 36. Connecting plate; 37. Gear; 38. Slide groove; 39. Slider; 310. Push block; 311. Rack; 312. Slot; 313. Connecting block; 314. Small electric actuator; 315. Clamping plate; 316. Layered pad; 317. Rotating shaft; 4. Controller. Detailed Implementation

[0030] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0031] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] Reference Figures 1 to 6This application provides a PCB board etching micro-etching agent dispensing device, including a support assembly 1. The support assembly 1 includes support plates 11. A top plate 12 is fixedly connected between the tops of the left and right support plates 11. A workbench 13 and a support plate 14 are fixedly connected between the inner walls of the left and right support plates 11. The workbench 13 is located below the support plate 14. A cleaning tank 16 and a reaction tank 17 are fixedly installed on the top of the workbench 13. A placement platform 15 is fixedly connected to one side of the top of the workbench 13. The cleaning tank 16 is located between the placement platform 15 and the reaction tank 17. The top of the support plate 14 is provided with... There is a feeding assembly 2, which includes a pure water tank 21. The pure water tank 21 is fixedly installed on the top of the support plate 14. A reagent tank 22 is fixedly installed on the top of the pure water tank 21. A first water inlet pipe 23 and a second water inlet pipe 24 are fixedly connected to the bottom of the pure water tank 21. A first electric valve 25 and a second electric valve 26 are fixedly installed on the outside of the first water inlet pipe 23 and the second water inlet pipe 24, respectively. The first water inlet pipe 23 and the second water inlet pipe 24 both pass through the support plate 14 and are fixedly connected to the rear outer wall of the washing tank 16 and the reaction tank 17, respectively. The reagent tank 22... A feeding pipe 27 is fixedly connected to the lower part of the outer wall. The bottom end of the feeding pipe 27 is located inside the reaction tank 17. A third electric valve 28 is fixedly installed on the outside of the feeding pipe 27. A first water outlet pipe 29 and a second water outlet pipe 210 are fixedly connected to the bottom of the outer wall of the washing tank 16 and the reaction tank 17, respectively. A fourth electric valve 211 and a fifth electric valve 212 are fixedly installed on the outside of the first water outlet pipe 29 and the second water outlet pipe 210, respectively. A liquid concentration detector 213 is fixedly installed on the top of the top plate 12. A liquid concentration detector 213 is fixedly installed on the left side of the top plate 12. A drug concentration detection probe 214 penetrates the top plate 12 and is located inside the reaction tank 17. A controller 4 is fixedly installed on the outer wall of the right support plate 11. A protective plate 215 is fixedly connected to the bottom of the reaction tank 17. A support 216 and a first motor 217 are fixedly installed at the bottom of the workbench 13. The first motor 217 is located inside the support 216. The output end of the first motor 217 penetrates the bottom of the workbench 13 and the reaction tank 17 and is fixedly connected to a stirring blade 218. The stirring blade 218 is located inside the protective plate 215.

[0033] In this embodiment, when it is necessary to drain the micro-etching agent inside the reaction tank 17 and the pure water inside the cleaning tank 16, the controller 4 controls the fourth electric valve 211 and the fifth electric valve 212 to open, allowing the micro-etching agent inside the reaction tank 17 and the pure water inside the cleaning tank 16 to flow out through the first water outlet pipe 29 and the second water outlet pipe 210. When it is necessary to add micro-etching agent and pure water to the reaction tank 17 and the cleaning tank 16 respectively, the liquid concentration detector 213 and the reagent concentration detection probe 214 detect the concentration of the reagent inside the reaction tank 17 in real time. Then, the controller 4 controls the first electric valve 25, the second electric valve 26 and the third electric valve 28 to open, allowing... The micro-etchant in reagent tank 22 falls into reaction tank 17 through feed pipe 27. Pure water in pure water tank 21 enters reaction tank 17 and cleaning tank 16 through first water inlet pipe 23 and second water inlet pipe 24 respectively. Inside reaction tank 17, first motor 217 is started, causing its output shaft to drive stirring blade 218 to rotate. Stirring blade 218 rotates inside protective plate 215, stirring and mixing the reagent and pure water inside reaction tank 17 evenly. The liquid concentration data inside reaction tank 17 is displayed on liquid concentration detector 213 by detection probe 214, thereby controlling the opening and closing of second electric valve 26, and thus controlling the entry of pure water to regulate the concentration of micro-etchant liquid.

[0034] Reference Figures 1 to 6 In one aspect of this embodiment, a conveying assembly 3 is provided on the top of the top plate 12. The conveying assembly 3 includes a fixing block 31, which is fixedly connected to the bottom of the top plate 12. A stepper motor 34 is fixedly installed on the top of the top plate 12. The output end of the stepper motor 34 passes through the top plate 12 and is fixedly connected to a rotating shaft 317. Both left and right rotating shafts 317 are rotatably connected to the bottom of the top plate 12. Pulleys 32 are rotatably connected to the outer sides of both left and right rotating shafts 317. A belt 33 is rotatably connected between the left and right pulleys 32. A first electric push rod 35 is fixedly installed on the inner side of the belt 33. A connecting plate 36 is fixedly connected to the output end of both left and right first electric push rods 35. A gear 37 is rotatably connected to the outer side of the output end of both left and right first electric push rods 35. The top of the connecting plate 36 is respectively opened with There are sliding grooves 38 and slots 312. Slider 39 is slidably connected inside the left and right sliding grooves 38. Push blocks 310 are fixedly connected to the top of the left and right sliders 39. A rack 311 is fixedly connected to one end of the inner side of the left and right push blocks 310. The front and rear racks 311 mesh with gears 37. The bottom of the front and rear racks 311 is fixedly connected to a block and slidably connected inside the slot 312. A connecting block 313 is fixedly connected to the center of the outer side of the rear rack 311. A small electric actuator 314 is fixedly installed on one side of the top of the connecting plate 36. The output end of the small electric actuator 314 is fixedly connected to one side of the connecting block 313. A clamping plate 315 is fixedly connected to the bottom of the left and right sliders 39. Layered pads 316 are fixedly connected to the inner side of the left and right clamping plates 315.

[0035] In this embodiment, when etching the PCB board is required, the operator first stands in front of the device and evenly arranges the PCB board on the corresponding left and right layered pads 316 according to their positions. At this time, the left and right clamping plates 315 are in their initial positions, ensuring that the PCB board does not fall off the left and right layered pads 316. Then, the stepper motor 34 is started, causing its output shaft to drive the rotating shaft 317 to rotate, thereby driving the pulley 32 to rotate, which in turn drives the belt 33 to rotate cyclically. The belt 33 drives multiple first electric actuators 35 to circulate. When they reach above the reaction tank 17, the output end of the first electric actuator 35 drives the connecting plate 36 fixedly connected at the bottom to move downward, so that the PCB board located between the left and right clamping plates 315 is immersed in the micro-etching agent solution. After the PCB board located on the layered pads 316 is etched, the first electric actuator 35 is started. Push rod 35 causes its output shaft to drive the connecting plate 36 to rise, causing the clamping plate 315 to disengage from the reaction tank 17. The belt 33 drives it to continue moving. The next first electric push rod 35 moves to this position and repeats the operation. After etching, the PCB board moves to the top of the cleaning tank 16. Driven by the first electric push rod 35, the PCB board is rinsed with pure water and then transported to the top of the placement table 15. At this time, the output end of the first electric push rod 35 drives the connecting plate 36 to move down to a suitable height. Then, the small electric push rod 314 is activated, causing its output end to drive the connecting block 313 to retract. The rack 311 moves outward, driving another rack 311 that meshes with the gear 37 to move outward together, thereby causing the left and right clamping plates 315 to move outward. At this time, the PCB board located on the layered pad 316 falls onto the placement table 15, is collected, and handed over to the staff for drying.

[0036] Working principle: When it is necessary to drain the micro-etching agent inside the reaction tank 17 and the pure water inside the cleaning tank 16, the controller 4 controls the fourth electric valve 211 and the fifth electric valve 212 to open, allowing the micro-etching agent inside the reaction tank 17 and the pure water inside the cleaning tank 16 to flow out through the first outlet pipe 29 and the second outlet pipe 210. When it is necessary to add micro-etching agent and pure water to the reaction tank 17 and the cleaning tank 16 respectively, the liquid concentration detector 213 and the reagent concentration detection probe 214 detect the concentration of the reagent inside the reaction tank 17 in real time. Then, the controller 4 controls the first electric valve 25, the second electric valve 26 and the third electric valve 28 to open, allowing the micro-etching agent inside the reaction tank 17 and the pure water inside the cleaning tank 16 to flow out through the first outlet pipe 29 and the second outlet pipe 210. The micro-etchant in reagent tank 22 falls into reaction tank 17 through feeding pipe 27. Pure water in pure water tank 21 enters reaction tank 17 and cleaning tank 16 through first water inlet pipe 23 and second water inlet pipe 24 respectively. Inside reaction tank 17, first motor 217 is started, so that its output shaft drives stirring blade 218 to rotate. Stirring blade 218 rotates inside protective plate 215, stirring and mixing the reagent and pure water inside reaction tank 17 evenly. The liquid concentration data inside reaction tank 17 is displayed on liquid concentration detector 213 by detection probe 214, thereby controlling the opening and closing of second electric valve 26, and thus controlling the entry of pure water to regulate the concentration of micro-etchant liquid.When etching a PCB board is required, the operator first positions themselves in front of the device and evenly arranges the PCB board on the corresponding left and right layered pads 316 according to their positions. At this time, the left and right clamping plates 315 are in their initial positions, ensuring that the PCB board does not fall off the left and right layered pads 316. Then, the stepper motor 34 is started, causing its output shaft to drive the rotating shaft 317 to rotate, thereby driving the pulley 32 to rotate, which in turn drives the belt 33 to rotate cyclically. The belt 33 drives multiple first electric actuators 35 to circulate. When they reach above the reaction tank 17, the output end of the first electric actuator 35 drives the connecting plate 36 fixed at the bottom to move downward, immersing the PCB board between the left and right clamping plates 315 in the micro-etching solution. After the PCB board on the layered pads 316 has been etched, the first electric actuator 35 is started again. 5. The output shaft drives the connecting plate 36 to rise, causing the clamping plate 315 to disengage from the reaction tank 17. The belt 33 drives it to continue moving. The next first electric push rod 35 moves to this position and repeats the operation. After etching, the PCB board moves to the top of the cleaning tank 16. Driven by the first electric push rod 35, the PCB board is rinsed with pure water and then transported to the top of the placement platform 15. At this time, the output end of the first electric push rod 35 drives the connecting plate 36 to move down to a suitable height. Then, the small electric push rod 314 is activated, causing its output end to drive the connecting block 313 to retract. The rack 311 moves outward, driving another rack 311 meshing with the gear 37 to move outward as well, thereby causing the left and right clamping plates 315 to move outward. At this time, the PCB board located on the layered pad 316 falls onto the placement platform 15, is collected, and handed over to the staff for drying.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCB board etching micro-etching agent dispensing device, comprising a support assembly (1), characterized in that: The support assembly (1) includes a support plate (11), a top plate (12) is fixedly connected between the tops of the left and right support plates (11), a workbench (13) and a support plate (14) are fixedly connected between the inner walls of the left and right support plates (11), the workbench (13) is located below the support plate (14), a cleaning tank (16) and a reaction tank (17) are fixedly installed on the top of the workbench (13), and a placement platform (1) is fixedly connected to one side of the top of the workbench (13). 5) The cleaning tank (16) is located between the placement platform (15) and the reaction tank (17). A feeding assembly (2) is provided on the top of the support plate (14). The feeding assembly (2) includes a pure water tank (21). The pure water tank (21) is fixedly installed on the top of the support plate (14). A reagent tank (22) is fixedly installed on the top of the pure water tank (21). The bottom of the pure water tank (21) is fixedly connected to a first water inlet pipe (23) and a second water inlet pipe (24). Water pipe (24), first inlet pipe (23) and second inlet pipe (24) are respectively fixedly installed with first electric valve (25) and second electric valve (26) on the outside. First inlet pipe (23) and second inlet pipe (24) both pass through support plate (14) and are respectively fixedly connected to the rear outer wall of cleaning tank (16) and reaction tank (17). Feeding pipe (27) is fixedly connected to the bottom of the outer wall of reagent box (22). The bottom end of feeding pipe (27) is located inside reaction tank (17). Third electric valve (28) is fixedly installed on the outside of feeding pipe (27). First outlet pipe (29) and second outlet pipe (210) are respectively fixedly connected to the rear bottom of the outer wall of cleaning tank (16) and reaction tank (17). Fourth electric valve (211) and fifth electric valve (212) are respectively fixedly installed on the outside of first outlet pipe (29) and second outlet pipe (210).

2. The PCB board etching micro-etching agent dispensing device according to claim 1, characterized in that: A liquid concentration detector (213) is fixedly installed on the top of the top plate (12). A drug concentration detection probe (214) is fixedly installed on the left side of the liquid concentration detector (213). The drug concentration detection probe (214) penetrates the top plate (12) and is located inside the reaction tank (17). A controller (4) is fixedly installed on the outer wall of the right support plate (11).

3. The PCB board etching micro-etching agent dispensing device according to claim 1, characterized in that: A protective plate (215) is fixedly connected to the bottom of the reaction tank (17). A support (216) and a first motor (217) are fixedly installed at the bottom of the workbench (13). The first motor (217) is located inside the support (216). The output end of the first motor (217) passes through the bottom of the workbench (13) and the reaction tank (17) and is fixedly connected to a stirring blade (218). The stirring blade (218) is located inside the protective plate (215).

4. The PCB board etching micro-etching agent dispensing device according to claim 1, characterized in that: A conveying assembly (3) is provided on the top of the top plate (12). The conveying assembly (3) includes a fixing block (31), which is fixedly connected to the bottom of the top plate (12). A stepper motor (34) is fixedly installed on the top of the top plate (12). The output end of the stepper motor (34) passes through the top plate (12) and is fixedly connected to a rotating shaft (317). The left and right rotating shafts (317) are rotatably connected to the bottom of the top plate (12). The outer sides of the left and right rotating shafts (317) are rotatably connected to pulleys (32). A belt (33) is rotatably connected between the left and right pulleys (32).

5. The PCB board etching micro-etching agent dispensing device according to claim 4, characterized in that: The inner side of the belt (33) is fixedly installed with a first electric push rod (35), and the output ends of the left and right first electric push rods (35) are fixedly connected with connecting plates (36), and the outer sides of the output ends of the left and right first electric push rods (35) are rotatably connected with gears (37).

6. The PCB board etching micro-etching agent dispensing device according to claim 5, characterized in that: The top of the connecting plate (36) is provided with a sliding groove (38) and a slot (312). The sliding grooves (38) are both slidably connected to the inside of the left and right sliding grooves (38). The top of the left and right sliding grooves (39) is fixedly connected to a push block (310). The inner end of the push block (310) is fixedly connected to a rack (311). The front and rear racks (311) mesh with the gear (37). The bottom of the front and rear racks (311) is fixedly connected to a slot and slidably connected to the bottom. Inside the slot (312), a connecting block (313) is fixedly connected to the center of the outer side of the rear rack (311). A small electric actuator (314) is fixedly installed on one side of the top of the connecting plate (36). The output end of the small electric actuator (314) is fixedly connected to one side of the connecting block (313). The bottom of the left and right sliders (39) is fixedly connected to a clamping plate (315). The inner side of the left and right clamping plates (315) is fixedly connected to a layered pad (316).

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