Printed circuit board (PCB) developing device

Abstract

The invention relates to the technical field of PCBs, in particular to a PCB developing device. The PCB developing device provided by the invention has a relatively good developing effect. A PCB developing device comprises a supporting main frame, a pressing mechanism, a switching mechanism and a spraying mechanism, the supporting main frame is arranged on the ground, three small holes are formed in the right side of the supporting main frame, the supporting main frame is provided with the pressing mechanism used for pressing a PCB, the supporting main frame is provided with the switching mechanism facilitating replacement of the PCB, and the spraying mechanism is arranged on the right side of the supporting main frame. A spraying mechanism for spraying a developing solution to the surface of the PCB is arranged on the supporting main frame. The PCB is fixed through the suction cup, the fixing plate is fixed through the magnetic clamping block, so that the situation that the fixing plate deflects to affect the developing effect is prevented, a developing solution is sprayed downwards to the surface of the PCB through the spray head, the PCB is pressed through the pressing wheel, the developing solution makes full contact with the PCB, the developing time is shortened, and the developing efficiency is improved. And a better developing effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of PCB boards, and in particular to a PCB board developing device. Background Art

[0002] PCB board, or printed circuit board, is an important electronic component and a carrier for interconnecting electronic components. The production process of PCB board is mainly divided into the steps of cutting, drilling, copper plating, lamination, exposure, development, electrocopper, electrotinning, film stripping, etching, tin stripping, baking, tin spraying, testing and packaging. PCB development is one of the important steps in making printed circuit boards. The main process is to use the chemical reaction between the developer and the unexposed part of the photosensitive adhesive layer to remove the unexposed part of the photosensitive adhesive layer, thereby forming a circuit pattern through chemical reaction. The development process requires strict control of time, temperature and chemical concentration to ensure the quality and stability of the circuit board.

[0003] Patent publication number CN210090917U discloses a developer convenient for PCB board use, including a machine body, a roller conveyor is arranged at the middle part of the inner side of the machine body, two spray pipes are also arranged at the inner side of the machine body, a driving motor is fixedly installed at the top of the machine body, two lead screws are arranged at the inner side of the machine body, mounting plates are arranged horizontally above and below the roller conveyor, two vertical plates are arranged on the side of the mounting plate close to the roller conveyor, a coating roller is rotatably connected between the two vertical plates, a connecting arm is arranged on the outer side of the two vertical plates, the connecting arm is threadedly connected with the lead screw, and the coating motor is connected with one end of the coating roller; the developer is arranged by arranging the coating roller and smoothing the developer accumulated on the surface of the PCB board to make the PCB board develop evenly, by arranging the liquid collecting tank to recover the dripping developer, by sucking the developer on the surface of the coating roller into the recovery box through the suction nozzle, so that the developer can be recycled, and the coating roller is ensured to continuously coat the PCB board, but the developing device only sprays the PCB board that has been exposed, the developing speed is slow, and the developing effect is poor.

[0004] In view of the above-mentioned drawbacks, it is necessary to design a PCB board developing device with better developing effect. Summary of the invention

[0005] In order to overcome the shortcomings of the traditional developing device that only sprays the exposed PCB board, has a slow developing speed and poor developing effect, the technical problem to be solved is: to provide a PCB board developing device with better developing effect.

[0006] The technical solution of the present invention is: a PCB board developing device, including a supporting main frame, a pressing mechanism, a switching mechanism and a spraying mechanism, the supporting main frame is placed on the ground, a small hole is opened on the right side of the supporting main frame, a pressing mechanism for pressing the PCB board is provided on the supporting main frame, a switching mechanism for facilitating the replacement of the PCB board is provided on the supporting main frame, and a spraying mechanism for spraying a developing solution onto the surface of the PCB board is provided on the supporting main frame.

[0007] In one of the embodiments, the pressing mechanism includes a fixed block, an electric slide rail, a slider and a pressing wheel. The fixed block is connected to the supporting main frame, the front side of the fixed block is connected to the electric slide rail, the slider is slidably connected to the electric slide rail, and the pressing wheel is rotatably connected to the lower front side of the slider.

[0008] In one of the embodiments, the switching mechanism includes a rotating wheel, a fixed plate, a handle, a first telescopic component, a suction cup, a pressure spring, a first magnet and a magnetic block. The rotating wheel is rotatably connected to the inner side of the lower part of the supporting main frame, the fixed plate is connected to the outer side of the rotating wheel, the handle is connected to the right side of the rotating wheel, and the first telescopic component is connected to the upper side of the right part of the rotating wheel. The first telescopic component is in contact with the supporting main frame, the suction cup is slidably connected to the upper side of the fixed plate, and the suction cup is covered with a pressure spring, one end of the pressure spring is connected to the fixed plate, and the other end is connected to the suction cup, the first magnet is connected to the lower side of the slider, the first magnet is slidably connected to the supporting main frame, and the magnetic block is slidably connected to the supporting main frame.

[0009] In one of the embodiments, the spray mechanism includes a liquid inlet pipe, a liquid storage tank, a nozzle, a fixed frame, a rotating plate, a bidirectional torsion spring and a blocking plate. The liquid storage tank is connected to the support main frame, the nozzle is connected to the lower side of the liquid storage tank, the upper side of the liquid storage tank is connected to the liquid inlet pipe, the liquid inlet pipe passes through the support main frame, the upper side of the slider is connected to the fixed frame, the fixed frame is rotatably connected to the rotating plate, the upper and lower sides of the rotating plate are both covered with bidirectional torsion springs, one end of the bidirectional torsion spring is connected to the fixed frame, and the other end is connected to the rotating plate, the upper left side of the liquid storage tank is slidably connected to a blocking plate, and a small hole is opened on the blocking plate.

[0010] In one embodiment, the upper side of the right portion of the rotating plate is inclined.

[0011] In one of the embodiments, a circulation mechanism for recycling the developer is also included, and the circulation mechanism includes a liquid storage frame, a filter screen, a water pump and a return pipe. The lower side of the support main frame is connected to the liquid storage frame, the upper inner side of the liquid storage frame is connected to the filter screen, the inside of the liquid storage frame is connected to the water pump, the filter screen is located on the outside of the water pump, the water pump is connected to the return pipe, and the return pipe is connected to the liquid storage tank.

[0012] In one of the embodiments, a mixing mechanism for mixing the developer concentration is also included, the mixing mechanism includes a powder storage box, a baffle, an extension rod and a second telescopic assembly, the powder storage box is connected to the upper side of the liquid storage box, the second telescopic assembly is connected to the lower left side of the powder storage box, a baffle is slidably connected to the inner side of the powder storage box, the baffle is connected to the second telescopic assembly, the extension rod is connected to the left side of the baffle, and the left side of the extension rod is inclined.

[0013] In one of the embodiments, a heating mechanism for heating the developer is also included, the heating mechanism includes a heating tube, a second magnet and a third magnet, the third magnet is connected to the fixed frame, the second magnet is slidably connected inside the liquid storage tank, and the heating tube is connected to the outside of the second magnet.

[0014] The beneficial effects are as follows: 1. The present invention fixes the PCB board by a suction cup and fixes the fixing plate by a magnetic block, thereby preventing the fixing plate from deflecting and affecting the developing effect; the developer is sprayed downward onto the surface of the PCB board by a nozzle, and the PCB board is pressed by a pressing wheel, so that the developer is fully in contact with the PCB board, thereby shortening the developing time and achieving a better developing effect;

[0015] 2. The present invention filters the impurities in the developer by means of a filter screen, and recycles the developer in the liquid storage frame by means of a water pump, thereby achieving the effect of avoiding waste;

[0016] 3. The present invention increases the concentration of the developer by regularly adding developer powder to the liquid storage tank, thereby preventing the developer from being diluted and affecting the developing effect due to long-term use of the developer;

[0017] 4. The present invention heats the developer in the liquid storage tank by moving the heating tube left and right, thereby preventing the temperature from being too low to reduce the development effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the pressing mechanism of the present invention.

[0020] Figure 3 It is a partial three-dimensional structural schematic diagram of the pressing mechanism of the present invention.

[0021] Figure 4 It is a schematic diagram of the first three-dimensional structure of the switching mechanism of the present invention.

[0022] Figure 5 It is a schematic diagram of a first partial three-dimensional structure of the switching mechanism of the present invention.

[0023] Figure 6 It is a schematic diagram of a second three-dimensional structure of the switching mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of a second partial three-dimensional structure of the switching mechanism of the present invention.

[0025] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the spray mechanism of the present invention.

[0026] Fig. 9 It is a partial three-dimensional structural schematic diagram of the spray mechanism of the present invention.

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the circulation mechanism of the present invention.

[0028] Fig.11 It is a schematic diagram of the three-dimensional structure of the mixing mechanism of the present invention.

[0029] Fig.12 It is a schematic diagram of a cross-sectional three-dimensional structure of the mixing mechanism of the present invention.

[0030] Fig.13 It is a schematic diagram of the three-dimensional structure of the heating mechanism of the present invention.

[0031] Fig.14 It is a schematic diagram of the three-dimensional structure of the heating mechanism of the present invention.

[0032] In the accompanying drawings: 1-support main frame, 2-pressing mechanism, 21-fixed block, 22-electric slide rail, 23-slider, 24-pressing wheel, 3-switching mechanism, 31-rotating wheel, 32-fixed plate, 33-turning handle, 34-first telescopic component, 35-suction cup, 36-pressure spring, 37-first magnet, 38-magnetic block, 4-spraying mechanism, 41-liquid inlet pipe, 42-liquid storage tank, 43-spray head, 44-fixed frame, 45-rotating plate, 46-bidirectional torsion spring, 47-blocking plate, 5-circulation mechanism, 51-liquid storage frame, 52-filter screen, 53-water pump, 54-return pipe, 6-dispensing mechanism, 61-powder storage box, 62-baffle, 63-extension rod, 64-second telescopic component, 7-heating mechanism, 71-heating tube, 72-second magnet, 73-third magnet. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] A PCB board developing device, please refer to the attached Figure 1, including a supporting main frame 1, a pressing mechanism 2, a switching mechanism 3 and a spraying mechanism 4. The supporting main frame 1 is placed on the ground. The supporting main frame 1 is provided with a switching mechanism 3 for facilitating the replacement of the PCB board. Three small holes are opened on the right side of the supporting main frame 1. The supporting main frame 1 is provided with a spraying mechanism 4. The spraying mechanism 4 is used to spray the developer onto the surface of the PCB board. The supporting main frame 1 is provided with a pressing mechanism 2 for pressing the PCB board.

[0036] Please refer to the attached Figure 2 -Attached Figure 3 The pressing mechanism 2 is used to press the PCB board. The pressing mechanism 2 includes a fixed block 21, an electric slide rail 22, a slider 23 and a pressing wheel 24. The fixed block 21 is connected to the supporting main frame 1, the electric slide rail 22 is connected to the front side of the fixed block 21, the slider 23 is slidably connected to the electric slide rail 22, and the pressing wheel 24 is connected to the lower front side of the slider 23. The pressing wheel 24 is used to press the PCB board.

[0037] Please refer to the attached Figure 2 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 6 The switching mechanism 3 is used to quickly replace the PCB board. The switching mechanism 3 includes a rotating wheel 31, a fixing plate 32, a turning handle 33, a first telescopic component 34, a suction cup 35, a pressure spring 36, a first magnet 37 and a magnetic block 38. The magnetic block 38 is slidably connected to the supporting main frame 1. The lower side of the slider 23 is connected to the first magnet 37. The first magnet 37 is slidably connected to the supporting main frame 1. The inner side of the lower part of the supporting main frame 1 is rotatably connected to the rotating wheel 31. The fixing plate 32 is connected to the outer side of the rotating wheel 31. There are three fixing plates 32, and the left side of the fixing plates 32 is provided with a recessed A turning handle 33 is connected to the right side of the rotating wheel 31, a first telescopic assembly 34 is connected to the upper right side of the rotating wheel 31, the first telescopic assembly 34 consists of a telescopic rod and a telescopic spring, a telescopic rod is connected to the upper right side of the rotating wheel 31, a telescopic spring is arranged inside the telescopic rod, the first telescopic assembly 34 is stuck in the small hole of the supporting main frame 1, and a plurality of suction cups 35 for fixing the PCB board are slidably connected to the upper side of the fixing plate 32, and pressure springs 36 for buffering the PCB board are sleeved on the suction cups 35, and both ends of the pressure spring 36 are respectively connected to the suction cup 35 and the fixing plate 32.

[0038] Please refer to the attached Figure 8 -Attached Fig. 9, the spray mechanism 4 is used to spray the developer onto the surface of the PCB board. The spray mechanism 4 includes a liquid inlet pipe 41, a liquid storage tank 42, a nozzle 43, a fixed frame 44, a rotating plate 45, a bidirectional torsion spring 46 and a blocking plate 47. The support main frame 1 is connected to a liquid storage tank 42 for storing the developer. The lower side of the liquid storage tank 42 is connected to several nozzles 43 for spraying the developer onto the surface of the PCB board. The upper side of the slider 23 is connected to the fixed frame 44. The rotating plate 45 is rotatably connected to the inside of the fixed frame 44. The upper right side of the rotating plate 45 is inclined. The upper and lower sides of the rotating plate 45 are both sleeved with bidirectional torsion springs 46. There are two bidirectional torsion springs 46. The two ends of the bidirectional torsion spring 46 are respectively connected to the fixed frame 44 and the rotating plate 45. The upper side of the liquid storage tank 42 is connected to the liquid inlet pipe 41, and the liquid inlet pipe 41 passes through the support main frame 1. The blocking plate 47 is slidably connected to the upper left side of the liquid storage tank 42, and a small hole is opened on the blocking plate 47.

[0039] When it is necessary to develop the exposed PCB board, the PCB board is mounted on the suction cup 35, and the PCB board is fixed under the suction of the suction cup 35. At this time, the first telescopic component 34 is stuck in the small hole of the supporting main frame 1, and the liquid inlet pipe 41 is connected to the container filled with developer. In the initial state, the blocking plate 47 blocks the liquid inlet pipe 41, and the developer cannot enter the liquid storage tank 42. At this time, the switch of the electric slide rail 22 is turned on, and the slider 23 moves to the right and drives the first magnet 37 to move to the right. Under the action of magnetic force, the first magnet 37 moves to the right and drives the magnetic block 38 to move to the right. When the magnetic block 38 contacts the fixed plate 32 and cannot continue to move to the right, the slider 23 moves to the right and drives the first magnet 37 to move to the right. At this time The magnetic block 38 is stuck in the groove of the fixed plate 32 to fix the fixed plate 32, thereby preventing the fixed plate 32 from deflecting and affecting the developing effect. When the slider 23 moves to the right, it drives the fixed frame 44, the rotating plate 45 and the bidirectional torsion spring 46 to move to the right. When the rotating plate 45 contacts the blocking plate 47, the rotating plate 45 moves to the right and drives the blocking plate 47 to move to the right. After the blocking plate 47 moves to the right for a distance, it is blocked by the liquid storage tank 42 and cannot continue to move to the right. At this time, the small hole on the blocking plate 47 is aligned with the liquid inlet pipe 41, and the blocking plate 47 no longer blocks the liquid inlet pipe 41. The developer enters the liquid storage tank 42 after passing through the liquid inlet pipe 41, and then sprays downward from the nozzle 43 to the surface of the PCB board. At this time, the rotating plate 45 rotates to the left when it moves to the right, and the bidirectional torsion spring 46 When the rotating plate 45 moves to the right and no longer contacts the blocking plate 47, the bidirectional torsion spring 46 is reset. Under the reset action of the bidirectional torsion spring 46, the rotating plate 45 rotates to the right to reset. When the slider 23 moves to the right, it drives the pressing wheel 24 to move to the right. The pressing wheel 24 rotates while moving to the right. When the pressing wheel 24 rotates, it presses the PCB board, so that the developer is in full contact with the PCB board, thereby shortening the developing time and achieving a better developing effect. When the slider 23 moves to the rightmost side of the electric slide rail 22, the slider 23 starts to move to the left. When the slider 23 moves to the left, it drives the pressing wheel 24 to rotate to the left. When the slider 23 moves to the left, it drives the first magnet 37, the fixing frame 44, the rotating plate 45 and the bidirectional torsion spring 46 to move to the left. When the rotating plate 45 moves to the left and contacts the blocking plate 47, the rotating plate 45 drives the blocking plate 47 to move to the left for resetting. At this time, the blocking plate 47 blocks the liquid inlet pipe 41 again. When the blocking plate 47 can no longer move to the left, the rotating plate 45 rotates to the right when it moves to the left, and the two-way torsion spring 46 is deformed. When the rotating plate 45 moves to the left and no longer contacts the blocking plate 47, the two-way torsion spring 46 is reset. Under the reset action of the two-way torsion spring 46, the rotating plate 45 rotates to the left for resetting. When the first magnet 37 moves to the left and contacts the magnetic block 38, the first magnet 37 moves to the left and drives the magnetic block 38 to move to the left. The magnetic block 38 no longer contacts the fixed plate 32. After the reset is completed, the switch of the electric slide rail 22 is turned off. At this time, the turning handle 33 can be rotated counterclockwise.When the handle 33 rotates counterclockwise, it drives the rotating wheel 31, the fixing plate 32, the pressure spring 36, the suction cup 35, the PCB board and the first telescopic component 34 to rotate counterclockwise. The first telescopic component 34 is no longer stuck in the small hole of the supporting main frame 1. The first telescopic component 34 is compressed. When the handle 33 rotates counterclockwise by 120°, the first telescopic component 34 contacts the small hole of the supporting main frame 1 again, and the first telescopic component 34 is reset. When the first telescopic component 34 is reset, it is stuck in the small hole of the supporting main frame 1 again, thereby preventing the rotating wheel 31 from rotating. At this time, the switching of the PCB board can be realized, and the PCB board that has been developed can be drained and dried. After the draining and drying are completed, the PCB board can be removed and replaced with a new PCB board. When it is necessary to develop other PCB boards, the relevant operations can be completed by referring to the above steps.

[0040] Example 2

[0041] Based on Example 1, please refer to the attached Fig.10 , and also includes a circulation mechanism 5, which is used to recycle the developer. The circulation mechanism 5 includes a liquid storage frame 51, a filter screen 52, a water pump 53 and a return pipe 54. The lower side of the support main frame 1 is connected to the liquid storage frame 51 for storing the developer, and the inner side of the upper part of the liquid storage frame 51 is connected to the filter screen 52 for filtering foreign matter in the developer. The water pump 53 is connected to the inside of the liquid storage frame 51, and the water pump 53 is located on the inner side of the filter screen 52. The upper right side of the liquid storage tank 42 is connected to the return pipe 54, and the return pipe 54 passes through the support main frame 1, and the return pipe 54 is connected to the water pump 53.

[0042] During the developing operation, the developer flows downward into the liquid storage frame 51, the liquid storage frame 51 stores the developer, and the filter 52 filters the solid impurities in the developer. When a certain amount of impurities accumulate on the filter 52, the filter 52 can be manually cleaned. When a certain amount of developer is stored in the liquid storage frame 51, during the developing operation, the switch of the water pump 53 is turned on. Under the action of the water pump 53, the developer in the liquid storage frame 51 enters the liquid storage tank 42 through the return pipe 54, and then is sprayed downward from the nozzle 43 to the surface of the PCB board, thereby realizing the recycling of the developer and achieving the effect of avoiding the waste of the developer. When the developing operation is no longer performed, the switch of the water pump 53 can be turned off.

[0043] Please refer to the attached Fig. 9 , Attachment Fig.11 and attached Fig.12, also includes a mixing mechanism 6, the mixing mechanism 6 is used to mix the developer concentration, the mixing mechanism 6 includes a powder storage box 61, a baffle 62, an extension rod 63 and a second telescopic component 64, the powder storage box 61 is connected to the upper side of the liquid storage box 42, the powder storage box 61 is used to store developer powder, the lower left side of the powder storage box 61 is connected to the second telescopic component 64, the second telescopic component 64 is composed of a telescopic rod and a telescopic spring, the lower left side of the powder storage box 61 is connected to the telescopic rod, the telescopic spring is arranged inside the telescopic rod, the inner side of the powder storage box 61 is slidably connected with a baffle 62 for shielding the developer powder, the baffle 62 is connected to the second telescopic component 64, the extension rod 63 is connected to the left side of the baffle 62, and the left side of the extension rod 63 is inclined.

[0044] The developer powder is stored in the powder storage box 61. In the initial state, the baffle 62 blocks the powder storage box 61, and the developer powder in the powder storage box 61 does not fall. When the rotating plate 45 moves to the right and contacts the extension rod 63, since the upper side of the rotating plate 45 and the left side of the extension rod 63 are both inclined, the rotating plate 45 moves to the right and drives the extension rod 63 to move forward, and the extension rod 63 moves forward and drives the baffle 62 to move forward. The second telescopic component 64 is compressed, and the baffle 62 no longer blocks the powder storage box 61 when it moves forward. The developer powder in the powder storage box 61 falls into the liquid storage tank 42, thereby increasing the concentration of the developer and preventing the developer from being diluted due to long-term use and affecting the developing effect. When the method continues to move forward, the rotating plate 45 rotates to the left when it moves to the right, and the two-way torsion spring 46 is deformed. When the rotating plate 45 is no longer in contact with the extension rod 63, the two-way torsion spring 46 is reset. Under the reset action of the two-way torsion spring 46, the rotating plate 45 rotates to the right, and the second telescopic assembly 64 is reset. Under the reset action of the second telescopic assembly 64, the baffle 62 and the extension rod 63 move backward to reset. When the rotating plate 45 moves to the left and contacts the extension rod 63, the rotating plate 45 rotates to the right when it moves to the left, and the two-way torsion spring 46 is deformed. When the rotating plate 45 moves to the left and no longer contacts the extension rod 63, the two-way torsion spring 46 is reset. Under the reset action of the two-way torsion spring 46, the rotating plate 45 rotates to the left to reset.

[0045] Please refer to the attached Fig.13 -Attached Fig.14 , and also includes a heating mechanism 7, which is used to heat the developer. The heating mechanism 7 includes a heating tube 71, a second magnet 72 and a third magnet 73. The second magnet 72 is slidably connected to the inside of the liquid storage tank 42, the third magnet 73 is connected to the fixed frame 44, and the outer side of the second magnet 72 is connected to the heating tube 71 for heating the developer.

[0046] When in a low temperature environment, turn on the switch of the heating tube 71, and the fixing frame 44 moves left and right, driving the second magnet 72 to move left and right. When the second magnet 72 contacts the third magnet 73 during the left and right movement, the second magnet 72 moves left and right, driving the third magnet 73 and the heating tube 71 to move left and right. When the heating tube 71 moves left and right, it heats the developer in the liquid storage tank 42, thereby preventing the temperature from being too low and the development effect from being reduced. After the development is completed, turn off the switch of the heating tube 71.

[0047] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A PCB board developing device, characterized in that: The invention comprises a supporting main frame (1), a pressing mechanism (2), a switching mechanism (3) and a spraying mechanism (4); the supporting main frame (1) is placed on the ground, a small hole is opened on the right side of the supporting main frame (1), the supporting main frame (1) is provided with a pressing mechanism (2) for pressing a PCB board, the supporting main frame (1) is provided with a switching mechanism (3) for facilitating replacement of the PCB board, and the supporting main frame (1) is provided with a spraying mechanism (4) for spraying a developer onto the surface of the PCB board.

2. A PCB board developing device as claimed in claim 1, characterized in that: The pressing mechanism (2) comprises a fixed block (21), an electric slide rail (22), a slider (23) and a pressing wheel (24); the supporting main frame (1) is connected with the fixed block (21); the front side of the fixed block (21) is connected with the electric slide rail (22); the slider (23) is slidably connected to the electric slide rail (22); and the front side of the lower part of the slider (23) is rotatably connected with the pressing wheel (24).

3. A PCB board developing device as claimed in claim 2, characterized in that: The switching mechanism (3) comprises a rotating wheel (31), a fixing plate (32), a rotating handle (33), a first telescopic assembly (34), a suction cup (35), a pressure spring (36), a first magnet (37) and a magnetic block (38); the rotating wheel (31) is rotatably connected to the inner side of the lower part of the supporting main frame (1); the fixing plate (32) is connected to the outer side of the rotating wheel (31); the rotating handle (33) is connected to the right side of the rotating wheel (31); and the first telescopic assembly (34) is connected to the upper side of the right part of the rotating wheel (31). The first telescopic assembly (34) is in contact with the supporting main frame (1), a suction cup (35) is slidably connected to the upper side of the fixed plate (32), a pressure spring (36) is sleeved on the suction cup (35), one end of the pressure spring (36) is connected to the fixed plate (32), and the other end is connected to the suction cup (35), a first magnet (37) is connected to the lower side of the slider (23), the first magnet (37) is slidably connected to the supporting main frame (1), and a magnetic card block (38) is slidably connected to the supporting main frame (1).

4. A PCB board developing device as claimed in claim 3, characterized in that: The spray mechanism (4) comprises a liquid inlet pipe (41), a liquid storage tank (42), a nozzle (43), a fixed frame (44), a rotating plate (45), a bidirectional torsion spring (46) and a blocking plate (47). The supporting main frame (1) is connected with the liquid storage tank (42), the lower side of the liquid storage tank (42) is connected with the nozzle (43), the upper side of the liquid storage tank (42) is connected with the liquid inlet pipe (41), the liquid inlet pipe (41) passes through the supporting main frame (1), the upper side of the slider (23) is connected with the fixed frame (44), the interior of the fixed frame (44) is rotatably connected with the rotating plate (45), the upper and lower sides of the rotating plate (45) are both sleeved with bidirectional torsion springs (46), one end of the bidirectional torsion spring (46) is connected with the fixed frame (44), and the other end is connected with the rotating plate (45), the upper left side of the liquid storage tank (42) is slidably connected with the blocking plate (47), and a small hole is opened on the blocking plate (47).

5. A PCB board developing device as claimed in claim 4, characterized in that: The upper side of the right portion of the rotating plate (45) is an inclined design.

6. A PCB board developing device as claimed in claim 5, characterized in that: The invention also comprises a circulation mechanism (5) for recycling the developer solution. The circulation mechanism (5) comprises a liquid storage frame (51), a filter screen (52), a water pump (53) and a water return pipe (54). The lower side of the supporting main frame (1) is connected to the liquid storage frame (51), the inner side of the upper part of the liquid storage frame (51) is connected to the filter screen (52), the inside of the liquid storage frame (51) is connected to the water pump (53), the filter screen (52) is located outside the water pump (53), the water pump (53) is connected to the water return pipe (54), and the water return pipe (54) is connected to the liquid storage tank (42).

7. A PCB board developing device as claimed in claim 6, characterized in that: The invention also comprises a mixing mechanism (6) for mixing the developer concentration, the mixing mechanism (6) comprising a powder storage box (61), a baffle (62), an extension rod (63) and a second telescopic assembly (64), the upper side of the liquid storage box (42) is connected to the powder storage box (61), the lower left side of the powder storage box (61) is connected to the second telescopic assembly (64), the inner side of the powder storage box (61) is slidably connected to the baffle (62), the baffle (62) is connected to the second telescopic assembly (64), the left side of the baffle (62) is connected to the extension rod (63), and the left side of the extension rod (63) is inclined.

8. A PCB board developing device as claimed in claim 7, characterized in that: The invention also comprises a heating mechanism (7) for heating the developer, the heating mechanism (7) comprising a heating tube (71), a second magnet (72) and a third magnet (73), the third magnet (73) is connected to the fixing frame (44), the second magnet (72) is slidably connected inside the liquid storage box (42), and the heating tube (71) is connected outside the second magnet (72).

Images