A circuit board cleaning device

Abstract

The utility model discloses a kind of circuit board cleaning devices, including box, conveying roller, fence, ultrasonic generator and water delivery device, the inner chamber of box is equipped with conveying roller for conveying circuit board, the front and rear side wall of box is equipped with import and export respectively, the both ends of conveying roller are respectively corresponding import and export;Fence is located above conveying roller;Ultrasonic generator is located in fence;Water delivery device is used to deliver clean water into fence, water supporting tray is located below water delivery device and below fence, water supporting tray is used to slow down the leakage speed of the gap of conveying roller, so that ultrasonic generator and the circuit board conveyed on conveying roller can be immersed in clean water simultaneously, when circuit board moves to the area, the circuit board conveyed on ultrasonic generator and conveying roller is immersed in clean water simultaneously, the clean water excited by ultrasonic generator can clean the residual liquid and other impurities in the groove of circuit board, improve cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board technology, and in particular to a circuit board cleaning device. Background Technology

[0002] During the circuit board manufacturing process, various chemicals are used. In order to ensure the quality of the circuit board, the chemicals need to be cleaned off in a timely manner. For example, when the copper surface is covered with ink, the ink has a certain height, and a groove is formed between the edge of the ink and the surface of the copper. Chemicals can easily remain in the groove. Current cleaning devices have difficulty cleaning the area in the groove, resulting in chemical residue, which in turn has an adverse effect on the quality of the circuit board. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a circuit board cleaning device capable of cleaning areas within grooves, thereby improving the cleaning effect.

[0004] A circuit board cleaning device according to an embodiment of the present invention includes a housing, a conveyor roller, a baffle, an ultrasonic generator, a water supply device, and a water tray. The inner cavity of the housing is provided with a conveyor roller for conveying circuit boards. The front and rear side walls of the housing are respectively provided with an inlet and an outlet, and the two ends of the conveyor roller correspond to the inlet and the outlet, respectively. The baffle is located above the conveyor roller. The ultrasonic generator is located inside the baffle. The water supply device is used to supply clean water into the baffle. The water tray is located below the water supply device and below the baffle. The water tray is used to slow down the leakage rate of water through the gaps in the conveyor roller so that the ultrasonic generator and the circuit boards conveyed on the conveyor roller can be simultaneously immersed in the clean water.

[0005] It has at least the following beneficial effects:

[0006] The water supply device continuously delivers clean water into the enclosure, which acts as a barrier to slow down or prevent the water from flowing around the conveyor rollers. The enclosure concentrates the clean water and directs it to a specific area of ​​the conveyor rollers. The water tray slows down the leakage rate through the gaps in the conveyor rollers. When the circuit board moves to this area, the ultrasonic generator and the circuit board being conveyed on the conveyor rollers are simultaneously immersed in clean water. When the ultrasonic generator is activated, the clean water agitated by the ultrasonic generator can clean residual chemicals and other impurities in the grooves of the circuit board, improving the cleaning effect of the circuit board.

[0007] According to some embodiments of the present invention, the enclosure includes a first side plate, a second side plate, a third side plate, and a fourth side plate. The second side plate and the fourth side plate are connected to the box body. The two ends of the first side plate are movably connected to the second side plate and the fourth side plate, respectively. The two ends of the third side plate are movably or fixedly connected to the second side plate and the fourth side plate, respectively.

[0008] According to some embodiments of the present invention, the second side plate and the fourth side plate are provided with sliding grooves on their two opposite sides, and the length direction of the two sliding grooves is both vertical. The two ends of the first side plate are respectively located in the two sliding grooves.

[0009] According to some embodiments of the present invention, the first side plate is provided with a flange, which is used to abut against the second side plate and / or the fourth side plate to position the first side plate.

[0010] According to some embodiments of this utility model, the conveying roller conveyor includes a left side plate, a right side plate, a row of upper conveying rollers distributed in the front-back direction, and a row of lower conveying rollers distributed in the front-back direction. The left side plate and the right side plate are both connected to the housing. The length direction of the left side plate, the right side plate, the second side plate, and the fourth side plate all extends in the front-back direction. The second side plate and the fourth side plate are respectively sealed to the left side plate and the right side plate. The row of upper conveying rollers and the row of lower conveying rollers are distributed vertically and span across the left side plate and the right side plate. The row of upper conveying rollers and the row of lower conveying rollers are used to clamp and convey the circuit board. The length direction of the first side plate, the third side plate, the upper conveying rollers, and the lower conveying rollers all extends in the left-right direction.

[0011] According to some embodiments of the present invention, the upper conveying roller located below the non-first side plate and the third side plate includes an upper roller body and a plurality of upper rollers. The upper roller body spans the left side plate and the right side plate, and the plurality of upper rollers are detachably mounted on the upper roller body.

[0012] According to some embodiments of this utility model, the upper conveying rollers located below the first side plate and the third side plate are all smooth rollers.

[0013] According to some embodiments of the present invention, the water conveying device includes a square frame, a cover plate, and a water distribution pipe. The square frame is connected to the enclosure or the box body, and the space enclosed by the square frame is connected to the space enclosed by the enclosure. The cover plate is placed on the square frame, and the water outlet end of the water distribution pipe is connected to the cover plate. Clean water is conveyed within the square frame.

[0014] According to some embodiments of the present invention, the ultrasonic generator is disposed within the frame.

[0015] According to some embodiments of the present invention, the upper end of the box is open, and the box is connected to a sealing plate for sealing the open.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0020] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of the enclosure, water conveying device, and mounting shell in the embodiments of this utility model;

[0022] Icon labels:

[0023] Box body 100, inlet 110, outlet 120, sealing plate 130;

[0024] Conveyor roller 200, left side plate 210, right side plate 220, upper conveyor roller 230, upper roller body 231, upper roller 232, lower conveyor roller 240;

[0025] Enclosure 300, first side panel 310, flange 311, second side panel 320, third side panel 330, fourth side panel 340;

[0026] 400 ultrasonic generator;

[0027] Water conveying device 500, square frame 510, cover plate 520, water distribution pipe 530;

[0028] Water tray 600. Detailed Implementation

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] Reference Figures 1 to 3 This utility model discloses a circuit board cleaning device, including a box 100, a conveyor roller 200, a barrier 300, an ultrasonic generator 400, and a water supply device 500. The inner cavity of the box 100 is provided with a conveyor roller 200 for conveying circuit boards. The front and rear side walls of the box 100 are respectively provided with an inlet 110 and an outlet 120. The two ends of the conveyor roller 200 correspond to the inlet 110 and the outlet 120, respectively. The circuit board enters the inner cavity of the box 100 through the inlet 110 and is conveyed from front to back by the conveyor roller 200. Finally, the circuit board is output from the box 100 through the outlet 120.

[0033] The enclosure 300 is located above the conveyor roller 200; the ultrasonic generator 400 is located inside the enclosure 300; the water supply device 500 is used to supply clean water into the enclosure 300; the water tray 600 is located below the water supply device 500 and below the enclosure 300. The water tray 600 is used to slow down the water leakage rate through the gaps in the conveyor roller 200 so that the ultrasonic generator 400 and the circuit board conveyed on the conveyor roller 200 can be simultaneously submerged in clean water.

[0034] The water supply device 500 continuously supplies clean water into the enclosure 300. The enclosure 300 acts as a barrier to slow down the flow of clean water around the conveyor roller 200. The enclosure 300 concentrates the clean water and directs it to a specific area of ​​the conveyor roller 200. The water tray 600 blocks the water flowing down through the gaps in the conveyor roller 200, thus slowing down the leakage rate. When the circuit board moves to this area, the ultrasonic generator 400 and the circuit board conveyed on the conveyor roller 200 are simultaneously immersed in clean water. The ultrasonic generator 400 is activated, and the clean water agitated by the ultrasonic generator 400 can clean the residual medicine and other impurities in the grooves of the circuit board, improving the cleaning effect of the circuit board.

[0035] The opening of the water tray 600 is close to the lower surface of the conveyor roller 200. The length and width dimensions of the water tray 600 are the same as those of the enclosure 300, and the enclosure 300 and the water tray 600 are vertically aligned.

[0036] Reference Figure 1 In some embodiments, the upper end of the housing 100 is open, and the conveyor roller 200, the enclosure 300, the ultrasonic generator 400, and the water conveying device 500 are all housed inside the housing 100. The open opening allows direct observation, installation, and maintenance of the conveyor roller 200, the enclosure 300, the ultrasonic generator 400, and the water conveying device 500. (Refer to...) Figure 2 The housing 100 is connected to a sealing plate 130, which is used to seal the opening and prevent clean water from splashing out of the housing 100 through the opening.

[0037] One end of the sealing plate 130 is connected to the housing 100 via a hinge or latch, and the other end of the sealing plate 130 is detachably connected to the housing 100 via a locking mechanism, enabling the function of opening or closing the sealing plate 130. A support rod is hinged to the other end of the sealing plate 130; when the sealing plate 130 is open, the support rod can be used to support the sealing plate 130 to maintain its open state. A sealing element is provided between the sealing plate 130 and the housing 100 to improve the sealing effect. The sealing plate 130 is made of transparent material, allowing direct observation of the working status of the conveyor roller 200, the enclosure 300, the ultrasonic generator 400, and the water conveying device 500 even when the sealing plate 130 is closed. A viewing window is provided on the side of the housing 100, through which the working status of the conveyor roller 200, the enclosure 300, the ultrasonic generator 400, and the water conveying device 500 can also be directly observed.

[0038] The circuit board cleaning device can be used to connect with the production line for producing circuit boards. It can clean circuit boards without removing them from the production line, and the cleaned circuit boards can be directly returned to the production line, improving the production efficiency of circuit boards. It also eliminates the need for unloading equipment to unload circuit boards and loading equipment to load circuit boards, saving equipment costs.

[0039] Understandably, "clean water" generally refers to liquids used for cleaning circuit boards, and existing liquids can be used depending on the actual situation.

[0040] Reference Figure 1 and Figure 2In some embodiments, the conveyor roller conveyor 200 includes a left side plate 210, a right side plate 220, a row of upper conveyor rollers 230 distributed in the front-to-back direction, and a row of lower conveyor rollers 240 distributed in the front-to-back direction. The left side plate 210 and the right side plate 220 are both connected to the housing 100, and the housing 100 supports the left side plate 210 and the right side plate 220. The row of upper conveyor rollers 230 and the row of lower conveyor rollers 240 are distributed vertically, and the length direction of the upper conveyor rollers 230 and the lower conveyor rollers 240 are both extended in the left-to-right direction. The row of upper conveyor rollers 230 and the row of lower conveyor rollers 240 are straddling the left side plate 210 and the right side plate 220, and the row of upper conveyor rollers 230 and the row of lower conveyor rollers 240 are used to clamp and convey circuit boards.

[0041] The upper conveyor roller 230 and the lower conveyor roller 240 have the same structure, but rotate in opposite directions. They also rotate at the same speed. When the circuit board is placed between the upper conveyor roller 230 and the lower conveyor roller 240, the upper conveyor roller 230 and the lower conveyor roller 240, which rotate in opposite directions, can smoothly convey the circuit board from front to back.

[0042] The conveyor roller conveyor 200 also includes a rotary drive mechanism and a rotary shaft. The rotary drive mechanism is connected to the housing 100, and the rotary shaft is rotatably connected to the housing 100. The length of the rotary shaft extends in the front-to-back direction. The output end of the rotary drive mechanism is connected to the rotary shaft for transmission. The rotary drive mechanism is used to drive the rotary shaft to rotate. The end of the upper conveyor roller 230 or the lower conveyor roller 240 is provided with a first bevel gear, and the rotary shaft is provided with a second bevel gear. The first bevel gear and the second bevel gear mesh with each other. The ends of the upper conveyor roller 230 and the lower conveyor roller 240 are respectively provided with a first spur gear and a second spur gear. The first spur gear and the second spur gear mesh internally with each other. When the rotary drive mechanism drives the rotary shaft to rotate, the rotary shaft drives the upper conveyor roller 230 or the lower conveyor roller 240 to rotate through the first bevel gear and the second bevel gear. The arrangement of the first spur gear and the second spur gear causes the upper conveyor roller 230 and the lower conveyor roller 240 to rotate in opposite directions.

[0043] Reference Figure 3 In some embodiments, the upper conveying roller 230 includes an upper roller body 231 and a plurality of upper rollers 232. The upper roller body 231 spans across the left side plate 210 and the right side plate 220. The plurality of upper rollers 232 are detachably mounted on the upper roller body 231. When the upper roller body 231 rotates, it drives the plurality of upper rollers 232 to rotate synchronously. The plurality of upper rollers 232 are used to abut against the circuit board and drive the circuit board to move.

[0044] In some embodiments, the upper roller 231 is connected to the upper roller 232 via sleeves, and the two sleeves are connected by a tenon and mortise structure, so that all the sleeves and all the upper rollers 232 rotate synchronously. The sleeves create a gap between two adjacent upper rollers 232 on the same upper roller 231, which allows clean water to pass through so that the clean water can smoothly contact and clean the circuit board on the conveyor roller 200.

[0045] Both ends of the upper roller body 231 are provided with upper fixing members. The two upper fixing members are used to fix the sleeves to the upper roller body 231, so that the upper roller body 231 can drive the two upper fixing members and all the sleeves on the upper roller body 231 to rotate synchronously. Similarly, the lower conveying roller 240 includes a lower roller body, multiple lower rollers and two lower fixing members. A first bevel gear is provided at the end of the upper roller body 231 of the upper conveying roller 230 or the lower roller body of the lower conveying roller 240, and a first spur gear and a second spur gear are respectively provided at the end of the upper roller body 231 and the end of the lower roller body.

[0046] The upper rollers 232 on two adjacent upper roller bodies 231 are staggered, so that a row of upper conveying rollers 230 has a dense distribution of upper rollers 232. The lower rollers on two adjacent lower roller bodies are staggered, so that a row of lower conveying rollers 240 has a dense distribution of lower rollers. This ensures that the upper surface of the circuit board has enough upper rollers 232 abutting against it, and the lower surface of the circuit board has enough lower rollers abutting against it. This allows the row of upper conveying rollers 230 and the row of lower conveying rollers 240 to clamp and convey the circuit board, which is beneficial for the smooth conveying of the circuit board.

[0047] Reference Figure 1 and Figure 4 In some embodiments, the enclosure 300 includes a first side plate 310, a second side plate 320, a third side plate 330, and a fourth side plate 340. The first side plate 310, the second side plate 320, the third side plate 330, and the fourth side plate 340 are all plate-shaped, and the planes on which the first side plate 310, the second side plate 320, the third side plate 330, and the fourth side plate 340 are located are all parallel to the vertical direction. The second side plate 320 and the fourth side plate 340 are both connected to the housing 100. The housing 100 supports the second side plate 320 and the fourth side plate 340, so that the second side plate 320 and the fourth side plate 340 are fixed above the conveyor roller 200.

[0048] The first side plate 310 is movably connected to the second side plate 320 and the fourth side plate 340 at both ends, meaning the first side plate 310 is detachably connected to the second side plate 320 and the fourth side plate 340. The third side plate 330 is movably or fixedly connected to the second side plate 320 and the fourth side plate 340 at both ends. When cleaning the circuit boards conveyed on the conveyor roller 200 is required, the first side plate 310, the second side plate 320, the third side plate 330, and the fourth side plate 340 are connected to form a frame. The space enclosed by the frame is used for water input. When cleaning the circuit boards conveyed on the conveyor roller 200 is not required, the first side plate 310 can be detached. When the third side plate 330 is movably connected to the second side plate 320 and the fourth side plate 340 at both ends, the third side plate 330 can be detached.

[0049] It is conceivable that the second side panel 320 and the left side panel 210 are parallel to each other, and the second side panel 320 is connected to the box body 100 through the left side panel 210. The fourth side panel 340 and the right side panel 220 are parallel to each other, and the fourth side panel 340 is connected to the box body 100 through the right side panel 220, thereby fixing the second side panel 320 and the fourth side panel 340.

[0050] Reference Figure 4 In some embodiments, the second side plate 320 and the fourth side plate 340 are provided with sliding grooves on their two opposite sides. The length direction of the two sliding grooves is vertical. The two ends of the first side plate 310 are respectively provided in the two sliding grooves, so that the first side plate 310 can be inserted into the second side plate 320 and the fourth side plate 340 in a vertically adjustable manner. Pulling the first side plate 310 upward can remove the first side plate 310 from the second side plate 320 and the fourth side plate 340, and moving it downward can insert the first side plate 310 into the second side plate 320 and the fourth side plate 340.

[0051] In some embodiments, the first side plate 310 is provided with a flange 311. Under the action of gravity or in the installed state of the first side plate 310, the first side plate 310 is inserted into the second side plate 320 and the fourth side plate 340. The flange 311 abuts against the second side plate 320 and / or the fourth side plate 340, and prevents the first side plate 310 from falling off the second side plate 320 and the fourth side plate 340, thereby achieving positioning and fixing of the first side plate 310.

[0052] The left side plate 210, right side plate 220, second side plate 320, and fourth side plate 340 all extend in the front-to-back direction. The second side plate 320 and fourth side plate 340 are respectively sealed to the left side plate 210 and right side plate 220 to prevent water from draining from the area between the second side plate 320 and the left side plate 210, and to prevent water from draining from the area between the fourth side plate 340 and the right side plate 220. Specifically, the second side plate 320 is connected to the left side plate 210 by multiple first fasteners, and the lower surface of the second side plate 320 is tightly attached to the upper surface of the left side plate 210. Alternatively, a sealing gasket can be provided between the lower surface of the second side plate 320 and the upper surface of the left side plate 210. Similarly, the fourth side plate 340 is connected to the right side plate 220 by multiple second fasteners, and the lower surface of the fourth side plate 340 is tightly attached to the upper surface of the right side plate 220. Alternatively, another sealing gasket can be provided between the lower surface of the fourth side plate 340 and the upper surface of the right side plate 220.

[0053] The length of the first side plate 310, the third side plate 330, the upper conveying roller 230, and the lower conveying roller 240 all extend in the left-right direction, with the first side plate 310 and the third side plate 330 distributed front to back. If the upper conveying roller 230 below the first side plate 310 also adopts a structure of multiple upper rollers 232, the area between the first side plate 310 and the upper conveying roller 230 below the first side plate 310 will quickly drain the clean water inside the enclosure 300. This would require a more powerful water conveying device 500, consuming more energy and incurring higher costs.

[0054] Reference Figure 1 and Figure 2 In some embodiments, the upper conveying roller 230 located below the first side plate 310 is a smooth roller, which can reduce the rate of water loss within the enclosure 300, thereby reducing energy consumption and lowering costs.

[0055] Similarly, the upper conveyor roller 230 located below the third side plate 330 is also a smooth roller. The smooth roller can reduce the rate of water loss within the enclosure 300, thereby reducing energy consumption and lowering costs.

[0056] Reference Figure 3 and Figure 4 In some embodiments, the water conveying device 500 includes a frame 510, a cover plate 520, and a water distribution pipe 530. The frame 510 is connected to the enclosure 300 or the box 100. The space enclosed by the frame 510 is connected to the space enclosed by the enclosure 300. The cover plate 520 is placed on the frame 510. The outlet end of the water distribution pipe 530 is connected to the cover plate 520. The water distribution pipe 530 is used to convey clean water into the space enclosed between the frame 510 and the cover plate 520. The frame 510 and the cover plate 520 can prevent clean water from splashing.

[0057] The bottom of the inner cavity of the housing 100 is provided with a collection tank. The water conveying device 500 also includes a liquid pipe and a liquid pump mounted on the liquid pipe. The inlet end of the liquid pipe is used to connect to a clean water tank for storing clean water, and the outlet end of the liquid pipe faces inward towards the enclosure 300. The liquid pipe and the liquid pump pump the clean water in the clean water tank into the enclosure 300. The clean water falling from the conveyor roller 200 flows back into the collection tank to collect the used clean water. The clean water collected in the collection tank can be drained away through a drain pipe or pumped away by a water pumping device.

[0058] The cover plate 520 has a water inlet, and a connector is connected to the inner wall of the water inlet. The cover plate 520 is connected to the water distribution pipe 530 through the connector. The cavity inside the connector is connected to the cavity of the water distribution pipe 530. When the cover plate 520 is placed on the frame 510, clean water can be delivered into the frame 510 through the water distribution pipe 530 and the connector. The ultrasonic generator 400 is placed inside the frame 510, so that the ultrasonic generator 400 is immersed in clean water. Notches are provided on the front and rear side walls of the frame 510. The front and rear ends of the cover plate 520 are provided with downward-facing folded edges. The front and rear ends of the cover plate 520 extend into the notches on the front and rear side walls of the frame 510, respectively, and the two folded edges of the cover plate 520 abut against the front surface of the front side wall and the rear surface of the rear side wall of the frame 510, respectively, thereby limiting the cover plate 520 on the frame 510.

[0059] One end of the frame 510 is detachably connected to the left side panel 210 or the second side panel 320, and the other end of the frame 510 is detachably connected to the right side panel 220 or the fourth side panel 340. (Refer to...) Figure 4 In this embodiment, one end of the frame 510 is detachably connected to the second side plate 320, and the other end of the frame 510 is detachably connected to the fourth side plate 340.

[0060] In this embodiment, there are two ultrasonic generators 400, two square frames 510, two cover plates 520 and two water distribution pipes 530. The water outlet of the liquid pipe is connected to the two water distribution pipes 530 through two quick connectors.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A circuit board cleaning device, characterized in that, include: The housing (100) has an inner cavity with a conveyor roller (200) for conveying circuit boards. The front and rear side walls of the housing (100) are respectively provided with an inlet (110) and an outlet (120). The two ends of the conveyor roller (200) correspond to the inlet (110) and the outlet (120) respectively. A barrier (300) is provided above the conveyor roller conveyor (200); An ultrasonic generator (400) is installed inside the enclosure (300); A water conveying device (500) is used to convey clean water into the enclosure (300); A water tray (600) is located below the water conveying device (500) and below the enclosure (300). The water tray (600) is used to slow down the leakage rate of the gaps in the conveying roller (200) so that the ultrasonic generator (400) and the circuit board conveyed on the conveying roller (200) can be simultaneously immersed in the clean water.

2. The circuit board cleaning device according to claim 1, characterized in that, The enclosure (300) includes a first side panel (310), a second side panel (320), a third side panel (330), and a fourth side panel (340). The second side panel (320) and the fourth side panel (340) are connected to the box body (100). The two ends of the first side panel (310) are movably connected to the second side panel (320) and the fourth side panel (340), respectively. The two ends of the third side panel (330) are movably or fixedly connected to the second side panel (320) and the fourth side panel (340), respectively.

3. The circuit board cleaning device according to claim 2, characterized in that, The second side plate (320) and the fourth side plate (340) are provided with grooves on their two opposite sides. The length direction of the two grooves is vertical. The two ends of the first side plate (310) are respectively located in the two grooves.

4. The circuit board cleaning device according to claim 3, characterized in that, The first side plate (310) is provided with a flange (311), which is used to abut against the second side plate (320) and / or the fourth side plate (340) to position the first side plate (310).

5. The circuit board cleaning device according to claim 2, characterized in that, The conveyor roller conveyor (200) includes a left side plate (210), a right side plate (220), a row of upper conveyor rollers (230) distributed in the front-back direction, and a row of lower conveyor rollers (240) distributed in the front-back direction. The left side plate (210) and the right side plate (220) are both connected to the housing (100). The length of the left side plate (210), the right side plate (220), the second side plate (320), and the fourth side plate (340) all extend in the front-back direction. The second side plate (320) and the fourth side plate (340) The circuit board is sealed and connected to the left side plate (210) and the right side plate (220) respectively. A row of upper conveying rollers (230) and a row of lower conveying rollers (240) are distributed vertically and span across the left side plate (210) and the right side plate (220). The row of upper conveying rollers (230) and the row of lower conveying rollers (240) are used to clamp and convey the circuit board. The length of the first side plate (310), the third side plate (330), the upper conveying rollers (230) and the lower conveying rollers (240) all extend in the left-right direction.

6. The circuit board cleaning device according to claim 5, characterized in that, The upper conveying roller (230) located below the non-first side plate (310) and the third side plate (330) includes an upper roller body (231) and a plurality of upper rollers (232). The upper roller body (231) spans the left side plate (210) and the right side plate (220), and the plurality of upper rollers (232) are detachably mounted on the upper roller body (231).

7. A circuit board cleaning device according to claim 6, characterized in that, The upper conveying rollers (230) located below the first side plate (310) and the third side plate (330) are both smooth rollers.

8. The circuit board cleaning device according to claim 1, characterized in that, The water conveying device (500) includes a frame (510), a cover plate (520), and a water distribution pipe (530). The frame (510) is connected to the enclosure (300) or the box (100). The space enclosed by the frame (510) is connected to the space enclosed by the enclosure (300). The cover plate (520) is placed on the frame (510). The outlet end of the water distribution pipe (530) is connected to the cover plate (520). Clean water is conveyed into the frame (510).

9. A circuit board cleaning device according to claim 8, characterized in that, The ultrasonic generator (400) is located within the frame (510).

10. A circuit board cleaning device according to claim 1, characterized in that, The upper end of the box (100) is open, and the box (100) is connected to a sealing plate (130) for sealing the opening.

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