Automatic cleaning equipment for PCB

Abstract

The invention relates to the technical field of PCB processing, and discloses an automatic cleaning device for PCBs, which comprises an operation table, a lifting assembly is arranged at the top of the operation table, a top plate is arranged on one side of the lifting assembly, a frame body is fixedly mounted at the top of the operation table, a front-back driving mechanism is arranged at the bottom of the top plate, and the front-back driving mechanism is arranged at the bottom of the frame body. The automatic cleaning equipment for the PCB comprises a frame body, a front-back driving mechanism is arranged at the bottom of the frame body, a cleaning mechanism is arranged at the bottom of the front-back driving mechanism, a clamping mechanism extending to the top of the frame body is arranged on the inner side of the frame body, and a linkage mechanism connected with the front-back driving mechanism is arranged at the bottom of a top plate. The PCB is fixed by the clamping mechanism, the linkage mechanism is driven by the front-back driving mechanism to enable the PCB to shake up and down during cleaning, the purpose of thoroughly removing attached impurities is achieved, and the purpose of cleaning the two sides of the PCB at the same time is achieved by arranging the cleaning mechanism and cleaning the two sides of the PCB at the same time.

Description

Technical Field

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

[0002] After searching, the Chinese patent publication number is CN212168265U, which discloses a cleaning device for circuit board production, including a device workbench, a lifting support column, a driving motor and a rotating brush. The outer surface of the first bevel gear is meshed with a second bevel gear through a thread, and a threaded screw is fixedly welded at the top center position of the second bevel gear. The outer surface of the threaded screw is movably covered with a screw sleeve. The utility model forms a cleaning structure through a motor box, a driving motor and a rotating brush. The surface of the circuit board can be automatically cleaned through the cleaning structure, avoiding manual cleaning, improving the cleaning efficiency, and making it clean more thoroughly. The above-mentioned prior art solutions have the following defects: only a brush can be used for cleaning, and some impurities will adhere to the surface of the PCB board and are inconvenient to remove, which is not conducive to the cleaning of the PCB board. Only a single brush can be used to clean one side of the PCB board, and both sides cannot be cleaned at the same time. Cleaning is time-consuming and labor-intensive, which reduces the practicality of the automatic cleaning device. Therefore, an automatic cleaning device for PCB boards is proposed to solve the above-mentioned problems. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides an automatic cleaning device for a PCB board, which has the advantages of completely removing attached impurities and being able to clean both sides simultaneously, thereby solving the problems mentioned in the above background technology.

[0004] (II) Technical solution

[0005] In order to achieve the purpose of completely removing the above-mentioned attached impurities and cleaning both sides simultaneously, the present invention provides the following technical solutions: an automatic cleaning device for a PCB board, comprising an operating table, a lifting assembly is arranged on the top of the operating table, a top plate is arranged on one side of the lifting assembly, a frame is fixedly installed on the top of the operating table, a front and rear driving mechanism is arranged at the bottom of the top plate, a cleaning mechanism is arranged at the bottom of the front and rear driving mechanism, a clamping mechanism extending to the top of the frame is arranged on the inner side of the frame, a linkage mechanism connected to the front and rear driving mechanism is arranged at the bottom of the top plate, and the connecting mechanism is connected to the operating table, the frame and the clamping mechanism; The lifting assembly includes a vertical plate, the vertical plate is fixedly installed on the top of the operating table, a mounting groove is opened on the right side of the vertical plate, an electric push rod is fixedly installed on the inner bottom wall of the mounting groove, the output shaft of the electric push rod is fixedly installed with a lifting plate slidably connected to the inner wall of the mounting groove, and the top plate is fixedly installed on the right side of the lifting plate.

[0006] Preferably, the front-rear driving mechanism includes a box body, the box body is fixedly mounted on the bottom of the top plate, a servo motor is fixedly mounted on the front side of the inner wall of the box body, a threaded rod rotatably connected to the rear side of the inner wall of the box body is fixedly mounted on the output shaft of the servo motor, a threaded block is threadedly connected to the outer side of the threaded rod, a limit frame extending to the left side of the inner wall of the box body is fixedly mounted, and a mounting block extending to the bottom of the box body is fixedly mounted on the bottom of the threaded block.

[0007] Preferably, the cleaning mechanism includes a mounting plate, a mounting plate is fixedly mounted on the bottom of the mounting block, two vertical plates are fixedly mounted on the bottom of the mounting plate, two rectangular holes are opened inside the vertical plates, vacuum cleaners are fixedly mounted on the opposite sides of the two vertical plates, and cleaning roller brushes are fixedly mounted on the opposite sides of the two vertical plates.

[0008] Preferably, the clamping mechanism includes a frame, a frame extending to the inner side of the frame is slidably installed on the top of the frame, the frame is located directly below the cleaning roller brush, a dual-axis servo motor is fixedly installed on the inner bottom wall of the frame, left and right output shafts of the dual-axis servo motor are fixedly installed with screws rotatably connected to the left and right sides of the inner wall of the frame respectively, the outer side of the screw is threadedly connected to a screw block slidably connected to the inner bottom wall of the frame, a movable plate slidably connected to the inner wall of the frame is fixedly installed on the top of the screw block, opposite sides of the two movable plates are fixedly installed with support plates, and the top of the support plate is fixedly installed with a clamping block fixedly connected to the movable plate.

[0009] Preferably, the linkage mechanism includes a first support wheel, a first support wheel located on the left side of the box body is fixedly installed on the bottom of the top plate, a second support wheel located on the left side of the frame body is fixedly installed on the top of the operating table, a third support wheel located on the inner side of the frame body is fixedly installed on the top of the operating table, a fixing plate is slidably installed between the left and right sides of the inner wall of the frame body, a telescopic spring fixedly connected to the frame body is fixedly installed on the top of the fixing plate, and a connecting rope that sequentially passes through the fixing plate, the third support wheel, the frame body, the second support wheel, the first support wheel and the limit frame is fixedly installed on the bottom of the frame, and one end of the connecting rope is fixedly connected to the left side of the threaded block.

[0010] Preferably, a bar hole is provided on the inner bottom wall of the box body, the size of the bar hole is adapted to the moving track of the mounting block, and a mounting hole adapted to the limit frame is provided on the left side of the inner wall of the box body.

[0011] Preferably, the cleaning roller brush is a soft-bristle brush, and the number of the cleaning roller brushes on a single vertical plate is three and they are distributed at equal distances, and the two vertical plates are distributed symmetrically on the left and right.

[0012] Preferably, a sponge pad is fixedly installed on one side of the clamping block, the two clamping blocks are symmetrically distributed on the left and right, two threads of equal length and opposite directions are provided on the outer sides of the two screws, the inner top wall of the frame is open, and the inner top wall of the frame is provided with a limiting hole adapted to the frame.

[0013] Preferably, a circular hole adapted to the connecting rope is opened on the left side of the inner wall of the frame, a through circular hole adapted to the connecting rope is opened inside the fixing plate, and the number of the telescopic springs is four and two are grouped together and are symmetrically distributed left and right.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present invention provides an automatic cleaning device for PCB boards, which has the following beneficial effects: 1. The automatic cleaning equipment for PCB boards is provided with a lifting assembly, a front and rear driving mechanism, a clamping mechanism and a linkage mechanism. The clamping mechanism fixes the PCB board. While cleaning, the linkage mechanism is driven by the front and rear driving mechanism to make the PCB board shake up and down. When the cleaning mechanism cleans the PCB board, the electric push rod drives the lifting plate to slide up and down in the mounting groove of the vertical plate. The up and down movement of the lifting plate drives the lifting of the top plate and the front and rear driving mechanism, the cleaning mechanism, and the linkage mechanism below the top plate, thereby expanding the upper and lower cleaning range. The front and rear driving mechanism, the servo motor drives the threaded rod to rotate, and the threaded block on the threaded rod moves forward and backward under the action of the thread. Since a mounting block is fixed at the bottom of the threaded block, the mounting block drives the cleaning mechanism to move forward and backward, thereby realizing the cleaning of the PCB board. For comprehensive cleaning of the surface, the dual-axis servo motor drives the two screws to rotate. Since two threads of equal length and opposite directions are arranged on the outside of the screws, the two screw blocks will move to the middle or both sides at the same time. The movement of the screw blocks drives the moving plate and the supporting plate to move, and finally the clamping blocks clamp or release the PCB board. When the top plate is at the highest point, the threaded block will pull one end of the connecting rope to move synchronously when moving back and forth. Under the support of the third supporting wheel, the second supporting wheel and the first supporting wheel, the other end of the connecting rope pulls the frame down, and the telescopic spring makes the frame move up and reset. In this way, the clamping mechanism drives the clamped PCB board to move up and down synchronously, shakes the PCB board, and then shakes off the attached impurities, and collects the impurities through the cooperation of the vacuum cleaner, thereby achieving the purpose of completely removing the attached impurities.

[0016] 2. The automatic cleaning equipment for PCB boards can clean both sides of the PCB boards by setting a cleaning mechanism. The cleaning roller brushes on both sides are in contact with the surface of the PCB boards. The vertical plate moves back and forth to make the cleaning roller brushes rotate to brush away the dirt on the surface of the PCB boards. The vacuum cleaner sucks away the dirt and dust brushed off through the rectangular holes inside the vertical plate, so as to keep the working environment clean and achieve the purpose of cleaning both sides at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the structure of the present invention; Figure 2 It is a bottom-up stereogram of the structure of the present invention; Figure 3 It is a bottom-up perspective view of a partial structure of the present invention; Figure 4 It is a left-side stereogram of the local structure of the present invention; Figure 5 It is a left-side sectional exploded view of a local structure of the present invention; Figure 6 It is a sectional stereoscopic diagram of the local structure of the present invention.

[0018] In the figure: 1 operating table, 2 lifting assembly, 21 vertical plate, 22 mounting groove, 23 electric push rod, 24 lifting plate, 3 top plate, 4 front and rear driving mechanism, 41 box body, 42 servo motor, 43 threaded rod, 44 threaded block, 45 limit frame, 46 mounting block, 5 cleaning mechanism, 51 mounting plate, 52 vertical plate, 53 rectangular hole, 54 vacuum cleaner, 55 cleaning roller brush, 6 frame body, 7 clamping mechanism, 71 frame body, 72 dual-axis servo motor, 73 screw rod, 74 screw block, 75 moving plate, 76 supporting plate, 77 clamping block, 8 linkage mechanism, 81 first support wheel, 82 second support wheel, 83 third support wheel, 84 fixed plate, 85 telescopic spring, 86 connecting rope. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-6 The present invention provides a technical solution: an automatic cleaning device for a PCB board, comprising an operating table 1, a lifting assembly 2 is arranged on the top of the operating table 1, a top plate 3 is arranged on one side of the lifting assembly 2, a frame 6 is fixedly installed on the top of the operating table 1, a front and rear driving mechanism 4 is arranged at the bottom of the top plate 3, a cleaning mechanism 5 is arranged at the bottom of the front and rear driving mechanism 4 for performing a cleaning action, a clamping mechanism 7 extending to the top of the frame 6 is arranged on the inner side of the frame 6, a linkage mechanism 8 connected with the front and rear driving mechanism 4 is arranged at the bottom of the top plate 3, and the connecting mechanism 8 is connected with the operating table 1, the frame 6 and the clamping mechanism 7.

[0021] The lifting assembly 2 includes a vertical plate 21, and the vertical plate 21 is fixedly installed on the top of the operating table 1. A mounting groove 22 is opened on the right side of the vertical plate 21. An electric push rod 23 is fixedly installed on the inner bottom wall of the mounting groove 22. The electric push rod 23 is electrically connected to an external power supply and is controlled by an external program. The output shaft of the electric push rod 23 is fixedly installed with a lifting plate 24 that is slidably connected to the inner wall of the mounting groove 22, and the top plate 3 is fixedly installed on the right side of the lifting plate 24.

[0022] The electric push rod 23 pushes the lifting plate 24 to move up and down, thereby driving the top plate 3 and the lower mechanism to move up and down.

[0023] The front and rear drive mechanism 4 includes a box body 41, which is fixedly mounted on the bottom of the top plate 3. A servo motor 42 is fixedly mounted on the front side of the inner wall of the box body 41. The servo motor 42 is electrically connected to an external power supply and is controlled by an external program. The output shaft of the servo motor 42 can rotate forward and reverse. A threaded rod 43 is fixedly mounted on the output shaft of the servo motor 42 and is rotatably connected to the rear side of the inner wall of the box body 41. A threaded block 44 is threadedly connected to the outer side of the threaded rod 43. A limit frame 45 extending to the left side of the inner wall of the box body 41 is fixedly mounted on the left side, and a mounting block 46 extending to the bottom of the box body 41 is fixedly mounted on the bottom of the threaded block 44.

[0024] A bar hole is provided on the inner bottom wall of the box body 41, and the size of the bar hole is adapted to the moving trajectory of the mounting block 46. The setting of the bar hole ensures the stability of the forward and backward movement of the mounting block 46 and prevents the threaded block 44 from rotating. A mounting hole adapted to the limit frame 45 is provided on the left side of the inner wall of the box body 41.

[0025] The cleaning mechanism 5 includes a mounting plate 51, the bottom of the mounting block 46 is fixedly mounted with the mounting plate 51, the bottom of the mounting plate 51 is fixedly mounted with two vertical plates 52, the interior of the vertical plates 52 is provided with two rectangular holes 53, the opposite sides of the two vertical plates 52 are fixedly mounted with vacuum cleaners 54, the vacuum cleaners 54 are electrically connected to an external power supply and are controlled by an external program, and the opposite sides of the two vertical plates 52 are fixedly mounted with cleaning roller brushes 55.

[0026] The cleaning roller brush 55 is used for physical cleaning, and the vacuum cleaner 54 is used for dust collection, which together achieve efficient cleaning.

[0027] The cleaning roller brush 55 is a soft brush to prevent the brush from scratching the PCB board. The number of cleaning roller brushes 55 is moderate and evenly distributed. There are three cleaning roller brushes 55 on a single vertical plate 52 and they are distributed at equal distances. The two vertical plates 52 are distributed symmetrically on the left and right.

[0028] The clamping mechanism 7 includes a frame 71, and a frame 71 extending to the inner side of the frame 6 is slidably installed on the top of the frame 6, and the frame 71 is located directly below the cleaning roller brush 55. A dual-axis servo motor 72 is fixedly installed on the inner bottom wall of the frame 71. The dual-axis servo motor 72 is electrically connected to an external power supply and is controlled by an external program. Both output shafts of the dual-axis servo motor 72 can rotate forward and reverse. The left and right output shafts of the dual-axis servo motor 72 are fixedly installed with screws 73 that are rotatably connected to the left and right sides of the inner wall of the frame 71 respectively. The outer side of the screw 73 is threadedly connected to a screw block 74 that is slidably connected to the inner bottom wall of the frame 71. A moving plate 75 that is slidably connected to the inner wall of the frame 71 is fixedly installed on the top of the screw block 74. Support plates 76 are fixedly installed on the opposite sides of the two moving plates 75, and a clamping block 77 that is fixedly connected to the moving plate 75 is fixedly installed on the top of the support plate 76.

[0029] A sponge pad is fixedly installed on one side of the clamping block 77, and the two clamping blocks 77 are symmetrically distributed on the left and right. The outer sides of the two screw rods 73 are provided with two threads of equal length and opposite directions. The inner top wall of the frame 71 is open, and the inner top wall of the frame body 6 is provided with a limiting hole adapted to the frame 71.

[0030] The linkage mechanism 8 includes a first support wheel 81, a first support wheel 81 located on the left side of the box body 41 is fixedly installed at the bottom of the top plate 3, a second support wheel 82 located on the left side of the frame body 6 is fixedly installed at the top of the operating table 1, a third support wheel 83 located on the inner side of the frame body 6 is fixedly installed at the top of the operating table 1, a fixing plate 84 is slidably installed between the left and right sides of the inner wall of the frame body 6, a telescopic spring 85 fixedly connected to the frame body 71 is fixedly installed on the top of the fixing plate 84, and a connecting rope 86 that passes through the fixing plate 84, the third support wheel 83, the frame body 6, the second support wheel 82, the first support wheel 81 and the limit frame 45 in sequence is fixedly installed at the bottom of the frame body 71, and one end of the connecting rope 86 is fixedly connected to the left side of the threaded block 44.

[0031] A circular hole adapted to the connecting rope 86 is provided on the left side of the inner wall of the frame body 6, and a through circular hole adapted to the connecting rope 86 is provided inside the fixing plate 84. There are four telescopic springs 85, two in a group, and they are symmetrically distributed left and right.

[0032] When in use, the PCB board to be cleaned is placed on the frame 71 in the frame 6, and is clamped and fixed by the clamping block 77 of the clamping mechanism 7. According to the height of the PCB board, the height of the top plate 3 and the mechanism below it are adjusted by the lifting assembly 2, and the electric push rod 23 is started to make the top plate 3 and the mechanism below it drop to a suitable position, and the servo motor 42 is started to drive the front and rear drive mechanisms 4 to drive the cleaning mechanism 5 to move forward and backward to start the cleaning process. At the same time, the vacuum cleaner 54 starts to work to suck away the dirt and dust brushed by the cleaning roller brush 55. After cleaning, the servo motor 42 and the vacuum cleaner 54 are turned off, and the top plate 3 and the mechanism below it are raised to the initial position by the lifting assembly 2. The PCB board is released by the clamping mechanism 7 and taken out for the next process or storage. The operating status of each component is checked regularly, and severely worn parts are replaced in time. The filter of the vacuum cleaner 54 and the dirt on the cleaning roller brush 55 are cleaned to maintain efficient operation of the equipment.

[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] In summary, the automatic cleaning device for PCB board is provided with a lifting assembly 2, a front and rear driving mechanism 4, a clamping mechanism 7 and a linkage mechanism 8. The clamping mechanism 7 fixes the PCB board. While cleaning, the front and rear driving mechanism 4 drives the linkage mechanism 8 to make the PCB board shake up and down. When the cleaning mechanism 5 cleans the PCB board, the electric push rod 23 drives the lifting plate 24 to slide up and down in the mounting groove 22 of the vertical plate 21. The up and down movement of the lifting plate 24 drives the lifting of the top plate 3 and the front and rear driving mechanism 4, the cleaning mechanism 5, and the linkage mechanism 8 below, thereby expanding the upper and lower cleaning range. The front and rear driving mechanism 4, the servo motor 42 drives the threaded rod 43 to rotate, and the threaded block 44 on the threaded rod 43 moves forward and backward under the action of the thread. Since a mounting block 46 is fixed at the bottom of the threaded block 44, the mounting block 46 drives the cleaning mechanism 5 to move forward and backward to achieve comprehensive cleaning of the surface of the PCB board. The double-axis servo motor 72 drives the two screw rods 73 to rotate. Since two sections of threads of equal length and opposite directions are arranged on the outer side of the screw rod 73, the two screw blocks 74 will move to the middle or both sides at the same time. The movement of the screw block 74 drives the moving plate 75 and the supporting plate 76 to move, and finally the clamping block 77 clamps or releases the PCB board. When the board 3 is at the highest point, the threaded block 44 will pull one end of the connecting rope 86 to move synchronously when moving forward and backward. Under the support of the third support wheel 83, the second support wheel 82 and the first support wheel 81, the other end of the connecting rope 86 pulls the frame 71 downward, and the telescopic spring 85 causes the frame 71 to move up and reset. In this way, the clamping mechanism 7 drives the clamped PCB board to move up and down synchronously, shakes the PCB board, and then shakes off the attached impurities. The impurities are collected by the cooperation of the vacuum cleaner 54, and the purpose of thoroughly removing the attached impurities is achieved. By setting the cleaning mechanism 5, the PCB board is cleaned on both sides. The roller brush 55 is in contact with the surface of the PCB board, and the vertical plate 52 moves back and forth to make the cleaning roller brush 55 rotate to brush away the dirt on the surface of the PCB board. The vacuum cleaner 54 sucks away the dirt and dust brushed off through the rectangular hole 53 inside the vertical plate 52, so as to keep the working environment clean, thereby achieving the purpose of double-sided cleaning at the same time. The problem that cleaning can only be done by a brush, some impurities will adhere to the surface of the PCB board and are inconvenient to remove, which is not conducive to the cleaning of the PCB board, and only a single brush is used to clean one side of the PCB board, and it is impossible to clean both sides at the same time, which is time-consuming and labor-intensive, reducing the practicality of the automatic cleaning equipment.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic cleaning device for a PCB board, comprising an operating table (1), a lifting assembly (2) being arranged on the top of the operating table (1), a top plate (3) being arranged on one side of the lifting assembly (2), and a frame (6) being fixedly mounted on the top of the operating table (1), characterized in that: A front and rear driving mechanism (4) is disposed at the bottom of the top plate (3), a cleaning mechanism (5) is disposed at the bottom of the front and rear driving mechanism (4), a clamping mechanism (7) extending to the top of the frame (6) is disposed on the inner side, a linkage mechanism (8) connected to the front and rear driving mechanism (4) is disposed at the bottom of the top plate (3), and the connecting mechanism (8) is connected to the operating table (1), the frame (6) and the clamping mechanism (7); The lifting assembly (2) comprises a vertical plate (21), the vertical plate (21) is fixedly mounted on the top of the operating table (1), a mounting groove (22) is provided on the right side of the vertical plate (21), an electric push rod (23) is fixedly mounted on the inner bottom wall of the mounting groove (22), a lifting plate (24) slidably connected to the inner wall of the mounting groove (22) is fixedly mounted on the output shaft of the electric push rod (23), and the top plate (3) is fixedly mounted on the right side of the lifting plate (24).

2. The automatic cleaning device for PCB board according to claim 1, characterized in that: The front-rear drive mechanism (4) comprises a box body (41), the box body (41) being fixedly mounted on the bottom of the top plate (3), a servo motor (42) being fixedly mounted on the front side of the inner wall of the box body (41), a threaded rod (43) being fixedly mounted at the output shaft of the servo motor (42) and being rotatably connected to the rear side of the inner wall of the box body (41), a threaded block (44) being threadedly connected to the outer side of the threaded rod (43), a limit frame (45) extending to the left side of the inner wall of the box body (41) being fixedly mounted on the left side thereof, and a mounting block (46) extending to the bottom of the box body (41) being fixedly mounted on the bottom of the threaded block (44).

3. The automatic cleaning device for PCB board according to claim 2, characterized in that: The cleaning mechanism (5) comprises a mounting plate (51), the mounting plate (51) being fixedly mounted on the bottom of the mounting block (46), two vertical plates (52) being fixedly mounted on the bottom of the mounting plate (51), two rectangular holes (53) being provided inside the vertical plates (52), vacuum cleaners (54) being fixedly mounted on opposite sides of the two vertical plates (52), and cleaning roller brushes (55) being fixedly mounted on opposite sides of the two vertical plates (52).

4. The automatic cleaning device for PCB board according to claim 3, characterized in that: The clamping mechanism (7) comprises a frame (71), the top of the frame (6) is slidably mounted with a frame (71) extending to the inner side thereof, the frame (71) is located directly below the cleaning roller brush (55), the inner bottom wall of the frame (71) is fixedly mounted with a double-axis servo motor (72), the left and right output shafts of the double-axis servo motor (72) are both fixedly mounted with screws (73) rotatably connected to the left and right sides of the inner wall of the frame (71), the outer side of the screw (73) is threadedly connected with a screw block (74) slidably connected to the inner bottom wall of the frame (71), the top of the screw block (74) is fixedly mounted with a moving plate (75) slidably connected to the inner wall of the frame (71), the opposite sides of the two moving plates (75) are both fixedly mounted with a supporting plate (76), and the top of the supporting plate (76) is fixedly mounted with a clamping block (77) fixedly connected to the moving plate (75).

5. The automatic cleaning device for PCB board according to claim 4, characterized in that: The linkage mechanism (8) comprises a first support wheel (81); the bottom of the top plate (3) is fixedly mounted with the first support wheel (81) located on the left side of the box body (41); the top of the operating table (1) is fixedly mounted with a second support wheel (82) located on the left side of the frame body (6); the top of the operating table (1) is fixedly mounted with a third support wheel (83) located on the inner side of the frame body (6); a fixing plate (84) is slidably mounted between the left and right sides of the inner wall of the frame body (6); the top of the fixing plate (84) is fixedly mounted with a telescopic spring (85) fixedly connected to the frame body (71); the bottom of the frame body (71) is fixedly mounted with a connecting rope (86) which passes through the fixing plate (84), the third support wheel (83), the frame body (6), the second support wheel (82), the first support wheel (81) and the limit frame (45) in sequence; one end of the connecting rope (86) is fixedly connected to the left side of the threaded block (44).

6. The automatic cleaning device for PCB board according to claim 2, characterized in that: The inner bottom wall of the box body (41) is provided with a strip hole, the size of which is compatible with the moving track of the mounting block (46), and the left side of the inner wall of the box body (41) is provided with a mounting hole compatible with the limit frame (45).

7. The automatic cleaning device for PCB board according to claim 3, characterized in that: The cleaning roller brush (55) is a soft-bristled brush. The number of cleaning roller brushes (55) on a single vertical plate (52) is three and they are distributed at equal distances. The two vertical plates (52) are distributed symmetrically on the left and right.

8. The automatic cleaning device for PCB board according to claim 4, characterized in that: A sponge pad is fixedly mounted on one side of the clamping block (77), the two clamping blocks (77) are symmetrically distributed on the left and right, the outer sides of the two screw rods (73) are provided with two threads of equal length and opposite directions, the inner top wall of the frame (71) is open, and the inner top wall of the frame (6) is provided with a limiting hole adapted to the frame (71).

9. The automatic cleaning device for PCB board according to claim 5, characterized in that: A circular hole adapted to fit the connecting rope (86) is provided on the left side of the inner wall of the frame body (6), a through circular hole adapted to fit the connecting rope (86) is provided inside the fixing plate (84), and the number of the telescopic springs (85) is four, two in a group, and are symmetrically distributed left and right.

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