A cleaning device for PCB board processing

Abstract

The invention relates to the technical field of circuit board cleaning, and in particular to a cleaning device for PCB board processing, comprising a wastewater collection cabin, a cleaning cabin being installed on the top of the wastewater collection cabin, the cleaning cabin being vertically upward, the bottom end of the cleaning cabin being communicated with the top surface of the wastewater collection cabin, a water retaining cover being provided on the top of the cleaning cabin, a cleaning pipe being installed in the water retaining cover, a cleaning assembly being installed in the cleaning cabin, the cleaning assembly comprising two washing belts vertically installed in the cleaning cabin, and a transmission shaft driven at the upper and lower ends of the two washing belts, the upper two transmission shafts being installed on the left and right ends of the cleaning cabin through bearings, a circuit board placement space being reserved between the two washing belts, the cleaning efficiency is further improved, and the cleaning efficiency is better than the prior art of single-sided fluff wiping, and because the transmission power of the two washing belts comes from a water wheel instead of a motor, the energy consumption is reduced compared with the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board cleaning, and in particular to a cleaning device for PCB board processing. Background Art

[0002] PCB board also refers to circuit board. In order to keep the surface of the circuit board clean and tidy, components such as resistors will not fail after welding, and the service life of the circuit board will be improved. Therefore, the circuit board needs to be cleaned after production. Chinese patent application number 202022534172.0 discloses a cleaning device for PCB single-sided board processing, including a support plate, one side of the support plate is fixedly connected to a fixed plate, and one side of the fixed plate is rotatably connected to a second rotating shaft, etc.

[0003] In the prior art, during the cleaning operation, the circuit board stands in the equipment and is rotated by a belt driven by a rotating shaft. The belt drives a brush to wipe the surface of the circuit board. In order to rotate the rotating shaft, a motor needs to be installed on the equipment, which generates large losses during operation. When the circuit board is wiped by the brush, the circuit board is absolutely fixed and its surface cannot move relative to the brush. The cleaning force is low, which affects the cleaning efficiency. Summary of the invention

[0004] In order to solve the above problems, the present invention provides the following technical solutions:

[0005] The top of the cleaning chamber is connected to the top surface of the cleaning chamber, and the bottom end of the cleaning chamber is connected to the top surface of the cleaning chamber. The cleaning chamber is provided with a water retaining cover on the top of the cleaning chamber, and a cleaning pipe is installed in the water retaining cover. A cleaning assembly is installed in the cleaning chamber, and the cleaning assembly includes two washing belts vertically installed in the cleaning chamber, and also includes a transmission shaft transmitted at the upper and lower ends of the two washing belts, and the upper two transmission shafts are installed on the left and right ends of the cleaning chamber through bearings, and a circuit board placement space is left between the two washing belts, and the top of the circuit board placement space is connected to the water retaining cover. The cleaning assembly also includes a carrier plate located at the bottom side of the circuit board placement space, and also includes a spring seat fixed on the bottom surface of the carrier plate, and the bottom end of the spring seat is fixed on the bottom of the cleaning chamber; the cleaning pipes are arranged in two rows, and the two rows of cleaning pipes face the opposite sides of the two washing belts respectively;

[0006] Two front and rear drains are provided on the bottom of the cleaning cabin, and the two drains are respectively located at the bottom sides of the two washing belts, and the bottoms of the two drains are communicated with the wastewater collecting cabin. The two drains and the two rows of cleaning pipes form an up and down drop. The cleaning assembly also includes a water wheel installed in the wastewater collecting cabin. There are two water wheels, and the two water wheels are respectively located below the two drains. The ends of the water wheels extend to the outside of the wastewater collecting cabin and are transmitted on the transmission shaft.

[0007] As a further preferred embodiment, the top of the water shield is higher than the top of the transmission shaft, and the top of the water shield is a bell mouth that gradually becomes larger upwards.

[0008] As a further preference, the outer surface of the washing belt has fluff.

[0009] As a further preference, the two rows of cleaning pipes are connected to a main pipe, and the water inlet of the main pipe extends outside the water retaining cover.

[0010] As a further preferred embodiment, a drainage hole is provided on the wastewater collection chamber, and a first baffle and a second baffle are installed in the wastewater collection chamber, the first baffle and the second baffle are respectively located on the bottom sides of the two water wheels, the first baffle and the second baffle are respectively inclined toward the bottom end of each other, and a drainage space is left between the inclined ends.

[0011] As further preferred, the cleaning assembly also includes a cam fixed on the end of the transmission shaft at the bottom, and also includes a column installed on the end of the top surface of the carrier plate and vertically upward, the top of the column is provided with a horizontally bent trigger portion, and the cam is provided with three flange portions protruding outward, when the transmission shaft at the bottom rotates, the three flange portions are rotated by the cam, the trigger portion is located on the bottom side of the cam, and the trigger portion is located on the rotation path of the three flange portions, when the flange portion rotates to be triggered on the trigger portion, the trigger portion pushes the column to descend, and the column pushes the carrier plate to descend, and the spring seat is compressed and shortened, and when the flange portion rotates to separate from the trigger portion, the spring seat elastically becomes longer and pushes the carrier plate to rise.

[0012] As a further preference, the carrier plate is an inverted U-shaped bending part bent downward, which includes a horizontal plane at the top and bending parts bent downward from two sides of the horizontal plane, the bottom end of the bending part on one side is inclined above one of the drains, and the bottom end of the bending part on the other side is inclined above another of the drains, and the trigger part is installed on the end of the horizontal plane.

[0013] As a further preferred embodiment, a loading port is provided at the end of the cleaning cabin, and the loading port overlaps with the circuit board placement space. A door panel is installed on the loading port, and the bottom end of the door panel is hinged to the bottom end of the loading port. A sealing strip is provided on the edge of the door panel. When the door panel rotates on the loading port, it is sealed by the sealing strip and the circuit board is confined within the circuit board placement space, and the bottom end of the circuit board is confined to the horizontal plane at the top of the carrier board.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Two rows of cleaning pipes are arranged above the cleaning cabin. The cleaning pipes in the left row spray the cleaning liquid between the left side of the circuit board and the washing belt on the left side, and the cleaning pipes in the right row spray the cleaning liquid between the right side of the circuit board and the washing belt on the right side. The cleaning liquids on the left and right sides flow downward along the left and right sides of the circuit board and between the washing belts on both sides under the action of the high head difference. First, under the action of the high head difference, the left and right sides of the circuit board can be flushed downward, so that the left and right sides of the circuit board are flushed at the same time, which improves the cleaning efficiency and quality, and is superior to the existing technology of single-sided cleaning. Secondly, under the action of high head difference, the flushed cleaning liquid finally falls into the wastewater collection chamber from two downholes respectively. When the cleaning liquid enters the wastewater collection chamber in this way, in addition to reducing the amount of impurities remaining on the left and right sides of the circuit board, it can also impact the blades of the two water wheels, driving the two water wheels to rotate. When the two water wheels rotate, they will rotate with their shafts, and the shafts will rotate with the pulleys at the outer ends. The conveyor belt is driven by the pulley, and the other end of the conveyor belt rotates with the two transmission shafts on the bottom. The two transmission shafts on the bottom carry the two washing belts to the left and right sides of the circuit board, and the fluff completes the brushing operation on the left and right sides of the circuit board, further improving the cleaning efficiency, which is better than the existing technology of single-sided fluff wiping. Since the transmission power of the two washing belts comes from the water wheel instead of the motor, the energy consumption is reduced compared with the existing technology.

[0016] 2. When the transmission shaft rotates, it also carries the left and right washing belts to transport and wipe the left and right sides of the circuit board, and the carrier plate will also carry the circuit board up and down repeatedly. The impurities on the left and right sides of the circuit board are not only washed and scrubbed downwards, but also form a reverse impact with the flushing water flow as the circuit board rises and falls, thereby improving the flushing efficiency. The reverse impact formed enhances the contact strength between the circuit board and the fluff during scrubbing, thereby improving the scrubbing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a device according to an embodiment of the present invention after being cut away from the side view;

[0018] Figure 2 The device of the embodiment of the present invention is composed of Figure 1 The enlarged schematic diagram of the A part is shown;

[0019] Figure 3 It is a schematic diagram of a device according to an embodiment of the present invention from the left side end perspective;

[0020] Figure 4 It is a schematic diagram of the device according to the embodiment of the present invention from the right side end perspective;

[0021] Figure 5 This is a schematic diagram of the interior of the device after being cut open from the front side perspective according to an embodiment of the present invention;

[0022] Figure 6 The device of the embodiment of the present invention is composed of Figure 1 Schematic diagram of the right side plane after the lead is disconnected.

[0023] In the figure: 1. Wastewater collection chamber; 2. Cleaning chamber; 3. Water shield; 4. Cleaning assembly; 5. Washing belt; 6. Transmission shaft; 7. Circuit board placement space; 8. Carrier board; 9. Spring seat; 10. Downspout; 11. Water wheel; 12. Cleaning pipe; 13. Main pipe; 14. Drain hole; 15. First baffle; 16. Second baffle; 17. Cam; 18. Column; 19. Trigger part; 20. Flange part; 21. Horizontal plane; 22. Bending part; 23. Loading port; 24. Door panel; 25. Clamp seat. DETAILED DESCRIPTION

[0024] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0025] In one embodiment, if Figure 1-Figure 6 As shown: the present embodiment provides a cleaning device for PCB board processing, including a wastewater collecting cabin 1, a cleaning cabin 2 is installed on the top of the wastewater collecting cabin 1, the cleaning cabin 2 is vertically upward, the bottom end of the cleaning cabin 2 is communicated with the top surface of the wastewater collecting cabin 1, a water retaining cover 3 is provided on the top of the cleaning cabin 2, a cleaning pipe 12 is installed in the water retaining cover 3, a cleaning assembly 4 is installed in the cleaning cabin 2, the cleaning assembly 4 includes two washing belts 5 vertically installed in the cleaning cabin 2, and also includes a transmission shaft 6 driven at the upper and lower ends of the two washing belts 5, the upper two transmission shafts 6 are installed on the left and right ends of the cleaning cabin 2 through bearings, a circuit board placement space 7 is reserved between the two washing belts 5, the top of the circuit board placement space 7 is communicated with the water retaining cover 3, the cleaning assembly 4 also includes a carrier plate 8 located at the bottom side of the circuit board placement space 7, and also includes a spring seat 9 fixed on the bottom surface of the carrier plate 8, and the bottom end of the spring seat 9 is fixed on the cabin bottom of the cleaning cabin 2; the cleaning pipes 12 are in two rows, and the two rows of cleaning pipes 12 face the opposite sides of the two washing belts 5 respectively;

[0026] Two front and rear sinkholes 10 are provided on the bottom of the cleaning cabin 2. The two sinkholes 10 are respectively located at the bottom sides of the two washing belts 5, and the bottoms of the two sinkholes 10 are connected to the wastewater collecting cabin 1. The two sinkholes 10 and the two rows of cleaning pipes 12 form an up and down drop. The cleaning assembly 4 also includes a water wheel 11 installed in the wastewater collecting cabin 1. There are two water wheels 11, and the two water wheels 11 are respectively located below the two sinkholes 10. The ends of the water wheels 11 extend to the outside of the wastewater collecting cabin 1 and are driven on the transmission shaft 6.

[0027] The top of the water shield 3 is higher than the top of the top transmission shaft 6, and the top of the water shield 3 is a bell mouth that gradually becomes larger upwards.

[0028] The outer surface of the washing belt 5 is provided with fluff.

[0029] The two rows of cleaning pipes 12 are connected to a main pipe 13 , and the water inlet of the main pipe 13 extends outside the water shield 3 .

[0030] The cleaning assembly 4 also includes a cam 17 fixed on the end of the bottom transmission shaft 6, and also includes a column 18 installed on the top end of the carrier plate 8 and vertically upward. The top of the column 18 is provided with a horizontally bent trigger portion 19, and the cam 17 is provided with three flange portions 20 protruding outward. When the transmission shaft 6 rotates, the cam 17 rotates with the three flange portions 20. The trigger portion 19 is located on the bottom side of the cam 17, and the trigger portion 19 is located on the rotation path of the three flange portions 20. When the flange portion 20 rotates to trigger the trigger portion 19, the trigger portion 19 pushes the column 18 to descend, and the column 18 pushes the carrier plate 8 to descend, and compresses and shortens the spring seat 9. When the flange portion 20 rotates to separate from the trigger portion 19, the spring seat 9 elastically lengthens and pushes the carrier plate 8 to rise.

[0031] A loading port 23 is provided at the end of the cleaning chamber 2. The loading port 23 overlaps with the circuit board placement space 7. A door panel 24 is installed on the loading port 23. The bottom end of the door panel 24 is hinged to the bottom end of the loading port 23. A sealing strip is provided on the edge of the door panel 24. When the door panel 24 rotates on the loading port 23, it is sealed by the sealing strip and the circuit board is restricted in the circuit board placement space 7. At the same time, the bottom end of the circuit board is restricted on the horizontal plane 21 at the top of the carrier board 8. A clamp seat 25 is fixed on the horizontal plane 21. The shape of the clamp seat 25 is as follows: Figure 2 As shown, it is composed of an articulated seat and two clips mounted on the articulated seat. The two clips are arranged opposite to each other to form a clamping opening. A torsion spring is used between the two clips and the articulated seat to form a clamping effect. The door panel is opened to place the circuit board to be cleaned in the circuit board placement space 7. The bottom end of the circuit board is inserted into the clamp seat 25 to be clamped and fixed. Then the door panel 24 is closed. The closed door panel 24 is sealed with the feeding port 23 by a sealing strip.

[0032] Working principle: Open the door panel 24 and push the circuit board to be cleaned into the circuit board placement space 7 from one end. The bottom end of the circuit board is inserted into the clamp seat 25 and clamped and fixed on the carrier board 8. Close the door panel 24. The external high-pressure water pump sends the cleaning liquid into the two rows of cleaning pipes 12. Figure 6 As shown, a row of cleaning pipes 12 on the left sprays the cleaning liquid onto the left side of the circuit board and between the washing belt 5 on the left side, and a row of cleaning pipes on the right sprays the cleaning liquid onto the right side of the circuit board and between the washing belt 5 on the right side. The cleaning liquids on the left and right sides flow downward along the left and right sides of the circuit board and between the washing belts 5 on both sides under the action of the high head difference. First, under the action of the high head difference, the left and right sides of the circuit board can be flushed downward, so that the left and right sides of the circuit board are flushed at the same time, thereby improving the cleaning efficiency and quality, which is superior to the existing technology of single-sided cleaning. Secondly, under the high height difference, the flushed cleaning liquid finally falls into the wastewater collection chamber 1 from the two sinks 10 respectively, and impacts the two water wheels 11, so that the two water wheels 11 rotate with the force. When the two water wheels 11 rotate, the shaft on which they are located will rotate, and the shaft on which they are located will rotate with the pulley at the outer end, and the conveyor belt is driven by the pulley, and the other end of the conveyor belt rotates with the two transmission shafts 6 on the bottom side, and the two transmission shafts 6 on the bottom side carry the two washing belts 5 relative to the left and right sides of the circuit board, and the two washing belts 5 rotate with the two transmission shafts 6 on the top side. When the two washing belts 5 are conveyed, the fluff is also conveyed relative to the left and right sides of the circuit board, and the left and right sides of the circuit board are scrubbed by the fluff, thereby improving the cleaning efficiency of the circuit board, which is better than the existing technology of single-sided fluff wiping. Since the transmission power of the two washing belts 5 comes from the water wheel 11 instead of the motor, in order to scrub both sides of the circuit board, the energy consumption is reduced compared with the existing technology. The power for the rotation of the water wheel 11 comes from the cleaning liquid under the high drop, so the cleaning liquid is not only used for cleaning circuit boards, but also used in power applications, which expands the scope of application compared with the prior art.

[0033] In addition to the above, when the transmission shaft 6 on the bottom side rotates, it will also carry the cam 17, and the cam 17 will carry the three flange parts 20 to rotate. When the flange parts 20 rotate in turn to contact with the trigger part 19, they will provide pressure to the trigger part 19, so that the trigger part 19 will bring the column 18 down once, and the column 18 will push the carrier plate 8 down once, and the spring seat 9 will be compressed once. At the same time, the clamp seat 25 also brings the circuit board down once, and the left and right sides of the circuit board are lowered once relative to the left and right washing belts 5. On the contrary, when the flange portion 20 rotates to separate from the trigger portion 19 in sequence, the pressure on the trigger portion 19 and the column 18 disappears once, the spring seat 9 releases the elastic force upward once, and pushes the carrier plate 8 to rise once, the carrier plate 8 brings the clamp seat 25 to rise once, and the clamp seat 25 pushes the circuit board to rise once, that is, when the transmission shaft 6 rotates, it also brings the left and right washing belts 5 to transport and wipe the left and right sides of the circuit board, and the carrier plate 8 will also bring the circuit board to rise and fall repeatedly, the impurities on the left and right sides of the circuit board are not only washed and scrubbed downwards, but also form a reverse impact with the flushing water flow as the circuit board rises and falls, thereby improving the flushing efficiency, and the reverse impact formed and the contact force between the circuit board and the fluff during scrubbing are enhanced, thereby improving the scrubbing efficiency.

[0034] like Figure 6 As shown, the carrier plate 8 is an inverted U-shaped bent member bent downward, which includes a horizontal plane 21 at the top and bent parts 22 bent downward from both sides of the horizontal plane 21, the bottom end of one bent part 22 is inclined above one water trough 10, and the bottom end of the other bent part 22 is inclined above another water trough 10, and the trigger part 19 is installed on the end of the horizontal plane 21. After the cleaning liquid is flushed downward from the left and right sides of the circuit board, it first falls on the bent part 22 on the same side, and quickly falls into the corresponding water trough 10 under the inclined diversion of the bent part 22 on the same side, and finally impacts the corresponding water wheel 11, causing the water wheel 11 to rotate automatically.

[0035] like Figures 1 to 3 As shown, a drainage hole 14 is provided on the wastewater collection chamber 1. In actual use, the circulation pipe is connected to the drainage hole 14, and the other end of the circulation pipe is connected to an external high-pressure water pump. After the cleaning liquid enters the wastewater collection chamber 1 and is collected, it is circulated to the high-pressure pump through the circulation pipe, and then sent to the two cleaning pipes 12 by the high-pressure pump for flushing operations. Of course, a filtering device is installed on the circulation pipe or a high-pressure water pump with a filtering function is selected to improve the recycling effect of the cleaning liquid.

[0036] like Figure 1 , Figure 2As shown, the first baffle 15 and the second baffle 16 are installed in the wastewater collection chamber 1. The first baffle 15 and the second baffle 16 are respectively located at the bottom sides of the two water wheels 11. The first baffle 15 and the second baffle 16 are respectively inclined toward the bottom end of each other, and a drainage space for the cleaning liquid to be discharged into the wastewater collection chamber 1 is reserved between the inclined ends. A small liquid discharge space is formed between the first baffle 15 and the second baffle 16 and the water wheel 11 where they are located, so that the discharge speed of the cleaning liquid to the wastewater collection chamber 1 through the first baffle 15 and the second baffle 16 is reduced, and the resistance of the cleaning liquid to the first baffle 15 and the second baffle 16 is increased. In addition, the cleaning liquid falls on the water wheel 11 in a high head difference manner, thereby ensuring that the water wheel 11 can rotate effectively.

[0037] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0038] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cleaning device for PCB board processing, characterized in that: The invention comprises a wastewater collection chamber (1), a cleaning chamber (2) is installed on the top of the wastewater collection chamber (1), the cleaning chamber (2) is vertically upward, the bottom end of the cleaning chamber (2) is communicated with the top surface of the wastewater collection chamber (1), a water retaining cover (3) is provided on the top of the cleaning chamber (2), a cleaning pipe (12) is installed in the water retaining cover (3), a cleaning assembly (4) is installed in the cleaning chamber (2), the cleaning assembly (4) comprises two washing belts (5) vertically installed in the cleaning chamber (2), and also comprises a transmission shaft (6) driven at the upper and lower ends of the two washing belts (5), the upper two transmission shafts (6) is mounted on the left and right ends of the cleaning chamber (2) through bearings, a circuit board placement space (7) is reserved between the two washing belts (5), the top of the circuit board placement space (7) is communicated with the water shield (3), the cleaning assembly (4) further includes a carrier plate (8) located at the bottom side of the circuit board placement space (7), and further includes a spring seat (9) fixed on the bottom surface of the carrier plate (8), the bottom end of the spring seat (9) is fixed on the bottom of the cleaning chamber (2); the cleaning pipes (12) are arranged in two rows, and the two rows of cleaning pipes (12) face the opposite sides of the two washing belts (5) respectively; The bottom of the cleaning cabin (2) is provided with two front and rear water chutes (10), the two water chutes (10) are respectively located at the bottom sides of the two washing belts (5), and the bottoms of the two water chutes (10) are communicated with the wastewater collection cabin (1), the two water chutes (10) and the two rows of cleaning pipes (12) form an up and down drop, and the cleaning assembly (4) also includes a water wheel (11) installed in the wastewater collection cabin (1), the water wheel (11) is in two places, the two water wheels (11) are respectively located below the two water chutes (10), and the ends of the water wheels (11) extend to the outside of the wastewater collection cabin (1) and are driven on the transmission shaft (6).

2. The cleaning equipment for PCB board processing according to claim 1, characterized in that: The top end of the water shield (3) is higher than the top end of the transmission shaft (6), and the top end of the water shield (3) is a bell mouth that gradually expands upwards.

3. The cleaning equipment for PCB board processing according to claim 2, characterized in that: The outer surface of the washing belt (5) is provided with fluff.

4. The cleaning equipment for PCB board processing according to claim 3, characterized in that: The two rows of cleaning pipes (12) are connected to a main pipe (13), and the water inlet of the main pipe (13) extends outside the water retaining cover (3).

5. The cleaning equipment for PCB board processing according to claim 4, characterized in that: The wastewater collection chamber (1) is provided with a drainage hole (14). A first baffle (15) and a second baffle (16) are installed in the wastewater collection chamber (1). The first baffle (15) and the second baffle (16) are respectively located at the bottom sides of the two water wheels (11). The first baffle (15) and the second baffle (16) are respectively inclined towards the bottom end direction of each other, and a drainage space is left between the inclined ends.

6. The cleaning equipment for PCB board processing according to claim 5, characterized in that: The cleaning assembly (4) further comprises a cam (17) fixed to the end of the transmission shaft (6) at the bottom, and a column (18) mounted on the end of the top surface of the carrier plate (8) and extending vertically upward, wherein the top of the column (18) is provided with a horizontally curved trigger portion (19), and the cam (17) is provided with three flange portions (20) protruding outwardly, and when the transmission shaft (6) at the bottom rotates, the cam (17) drives the three flange portions (20) to rotate, and the trigger portion (19) is located at the cam ( 17), and the trigger portion (19) is located on the rotation path of the three flange portions (20); when the flange portion (20) rotates to trigger the trigger portion (19), the trigger portion (19) pushes the column (18) down, and the column (18) pushes the carrier plate (8) down, and compresses and shortens the spring seat (9); when the flange portion (20) rotates to separate from the trigger portion (19), the spring seat (9) elastically lengthens and pushes the carrier plate (8) up.

7. The cleaning equipment for PCB board processing according to claim 6, characterized in that: The carrier plate (8) is an inverted U-shaped bent member bent downward, comprising a horizontal surface (21) at the top and bent portions (22) bent downward from two sides of the horizontal surface (21), the bottom end of the bent portion (22) on one side being inclined above one of the drain troughs (10), and the bottom end of the bent portion (22) on the other side being inclined above another of the drain troughs (10), and the trigger portion (19) being mounted on the end of the horizontal surface (21).

8. The cleaning equipment for PCB board processing according to claim 7, characterized in that: The end of the cleaning chamber (2) is provided with a loading port (23), the loading port (23) overlaps with the circuit board placement space (7), a door panel (24) is installed on the loading port (23), the bottom end of the door panel (24) is hinged to the bottom end of the loading port (23), a sealing strip is provided on the edge of the door panel (24), when the door panel (24) rotates on the loading port (23), the sealing strip is used to seal and restrict the circuit board within the circuit board placement space (7), and at the same time, restrict the bottom end of the circuit board to the horizontal plane (21) at the top of the carrier board (8).

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