Circuit board double-sided cleaning machine

Abstract

The invention discloses a circuit board double-face cleaning machine, and relates to the technical field of circuit board cleaning machines, the circuit board double-face cleaning machine comprises a shell, a cleaning assembly used for cleaning the two faces of a circuit board is arranged in the shell, and a moving assembly used for cleaning the circuit board along an s-shaped path is arranged in the shell; a fixing assembly used for fixing the circuit board from the side edge is arranged in the shell, through use of a moving assembly, a moving shell drives a fixing block to move, the moving shell reciprocates left and right, and a moving gear rotates intermittently, so that the moving shell passes through the top of the circuit board along an s-shaped path, and a spraying ring cleans the top of the circuit board; compared with a traditional method that the circuit board is swept through a single row of nozzles, the circuit board is large in size, the circuit board can be gradually and carefully cleaned through the s-shaped path movement of the spraying ring, the structure of the device is simple, and the complex movement process of the s-shaped path of the spraying ring is achieved only through the two-way motor.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board cleaning machines, and in particular to a double-sided circuit board cleaning machine. Background Art

[0002] A circuit board is a core component of an electronic device, also known as a printed circuit board. It is a thin plate made of insulating material, covered with a layer of conductive material, usually copper. The main function of the circuit board is to provide electrical connections between electronic components and support and fix these components. The manufacturing process of the circuit board includes multiple links such as design, plate making, printing, etching, drilling, electroplating, etc. A circuit board cleaning machine is a device specifically used for cleaning circuit boards. It adopts advanced cleaning technology and can quickly and efficiently remove dirt, grease, rosin and other impurities on the surface of the circuit board, thereby improving the quality and reliability of the circuit board. A circuit board cleaning machine usually consists of a clamping device, a spraying system, a filtering system, etc. The spraying system is used to evenly spray the board cleaning liquid on the surface of the circuit board, and the filtering system is used to filter impurities in the cleaning liquid.

[0003] Many electronic components of different sizes and shapes are supported and fixed on the top of the circuit board, which makes dirt, grease, rosin and other impurities generated during the manufacturing process of the circuit board get mixed between the electronic components. For some large-sized circuit boards, traditional cleaning machines spray the board cleaning liquid onto the circuit board from top to bottom, which makes it difficult to clean the impurities hidden in the side gaps of the electronic components. The uncleaned impurities may cause dangers such as virtual connection and short circuit of the circuit board.

[0004] Traditional circuit board cleaning machines can only clean the top of the circuit board, which makes it necessary to turn over the circuit board to clean the back side after cleaning the top, which is rather troublesome. Moreover, since different circuit boards have different sizes and the spraying area of the spraying device remains the same each time, the device will cause waste of the cleaning liquid when cleaning small-sized circuit boards. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a double-sided circuit board cleaning machine, which solves the problems put forward in the above background art.

[0007] (2) Technical Solutions

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions: A double-sided circuit board cleaning machine for cleaning both sides of a circuit board, including a housing. A cleaning component for cleaning both sides of the circuit board is arranged inside the housing, and a movement component for cleaning the circuit board along an S-shaped path is arranged inside the housing.

[0009] Further, a fixing component for fixing the circuit board from the side is arranged inside the outer shell. The fixing component includes a circuit board cleaning liquid box fixedly connected to the inside of the outer shell. A side bracket is fixedly connected to the top of the circuit board cleaning liquid box. A drawer square frame is slidably connected inside the side bracket. An adjusting wheel is rotatably connected to the outside of the drawer square frame.

[0010] Further, an adjusting gear is rotatably connected inside the drawer square frame. The adjusting gear is fixedly connected to the adjusting wheel. A distance adjusting rack is slidably connected inside the drawer square frame. The distance adjusting rack meshes with the adjusting gear. A bearing rod is fixedly connected to one end of the distance adjusting rack away from the adjusting gear. A stepped groove is formed at the top of the bearing rod.

[0011] Further, the cleaning component includes a water pump fixedly connected to the inside of the circuit board cleaning liquid box. A fixed rack is fixedly connected to the inside of the side bracket. A moving gear meshes with the top of the fixed rack. A connecting rod is rotatably connected to the outside of the moving gear. A bottom spray pipe is fixedly connected to the bottom of the connecting rod. The bottom spray pipe is slidably connected to the side bracket.

[0012] Further, a long rod is fixedly connected to the inside of the moving gear. A sliding ring is slidably connected to the outside of the long rod. An adjusting frame is rotatably connected to the outside of the sliding ring. The adjusting frame is slidably connected to the bearing rod. A delivery pipe is fixedly connected to the outside of the bottom spray pipe. The delivery pipe is communicated with the bottom spray pipe. The water pump is communicated with the delivery pipe through a hose. A telescopic pipe is fixedly connected to the top of the delivery pipe.

[0013] Further, a moving frame is slidably connected to the top of the side bracket. A moving shell is slidably connected to the bottom of the moving frame. The moving frame is fixedly connected to the telescopic pipe. A liquid delivery pipe is fixedly connected to one end of the telescopic pipe away from the delivery pipe. An annular pipe is fixedly connected to the bottom of the moving shell. The liquid delivery pipe is communicated with the annular pipe. A spray ring is rotatably connected to the bottom of the annular pipe.

[0014] Further, the moving component includes a bidirectional motor fixedly connected to the top of the moving shell. An output shaft of the bidirectional motor is fixedly connected to a toothed disc. A reciprocating roller is fixedly connected to the bottom of the toothed disc. The reciprocating roller contacts the long rod.

[0015] Further, a fixed block is rotatably connected to the inside of the moving shell. A forward gear is fixedly connected to the outside of the fixed block. The forward gear is located inside the moving shell. A lever is fixedly connected to the outside of the fixed block. An arc-shaped plate is slidably connected to the outside of the forward gear. A clamping block is slidably connected to the inside of the arc-shaped plate. The clamping block is fixedly connected to the moving shell.

[0016] (III) Beneficial effects

[0017] The double-sided circuit board cleaning machine provided by the present invention has the following beneficial effects:

[0018] 1. By using the cleaning component and the moving component, the water pump extracts the cleaning liquid from the cleaning liquid box and sprays it out through multiple nozzles of the bottom spray pipe, so that the bottom of the circuit board is cleaned. At the same time, the cleaning liquid sprays out from the nozzles at the bottom of the spray ring, and the cleaning liquid will spray obliquely towards the sides of the electronic components. The spray ring moves horizontally to clean the surface of the circuit board. At the same time, the reciprocating roller rotates to drive the spray ring to rotate. The cleaning liquid sprayed by the spray ring forms a uniform ring, avoiding the uneven spraying of the cleaning liquid caused by the gaps between the nozzles. The rotation and horizontal movement of the spray ring enable the circular cleaning liquid flow sprayed out to wash all around the small electronic components, achieving the effect of cleaning both sides of the circuit board. At the same time, a circle of inclined nozzles at the bottom of the bottom spray pipe can wash the outside of the electronic components on the circuit board, enabling the outside of the electronic components to be better washed and improving the cleaning effect.

[0019] 2. By using the fixing component, the adjusting wheel drives the adjusting gear to rotate, causing the two bearing rods to approach each other, facilitating the placement of both sides of the circuit board in the two stepped grooves. By rotating the adjusting wheel to adjust the distance between the two bearing rods, the bearing rods clamp both sides of the circuit board, achieving the effect of fixing the circuit board. Compared with traditional clamping devices, the bottom of the circuit board is exposed, facilitating subsequent direct cleaning of the bottom of the circuit board. At the same time, the bearing rods drive the distance-adjusting frame to move, making the distance between the two sliding rings equal to the distance between both sides of the circuit board. Therefore, the width of the left-right movement and spraying of the spray ring is the same as the distance between both sides of the circuit board, achieving the effect of adjusting the width of the left-right movement and spraying of the spray ring. Compared with the fixed spraying width of traditional cleaning machines, the device automatically adjusts the spraying width of the spray ring to be the same as the width of the circuit board, thereby saving the usage amount of the cleaning liquid.

[0020] 3. By using the moving component, the moving shell drives the fixed block to move. The moving shell reciprocates left and right, and the moving gear rotates intermittently, causing the moving shell to pass over the top of the circuit board along an S-shaped path and enabling the spray ring to clean the top of the circuit board, achieving the effect of the spray ring cleaning the circuit board along an S-shaped path. Compared with the traditional method of sweeping the circuit board with a single row of nozzles, due to the large size of the circuit board, the S-shaped path movement of the spray ring can clean the circuit board step by step and carefully. Moreover, the structure of the device is simple, and only a two-way motor is used to achieve the complex movement process of the spray ring along the S-shaped path. Description of the Drawings

[0021] Figure 1 is the overall structure schematic diagram of the present invention;

[0022] Figure 2 is the partial structure sectional schematic diagram of the present invention;

[0023] Figure 3 is the structure schematic diagram of the fixing component of the present invention;

[0024] Figure 4 Schematic diagram of the water pump structure of the present invention;

[0025] Figure 5 Schematic diagram of the cleaning component structure of the present invention;

[0026] Figure 6 Schematic diagram of a partial cleaning component structure of the present invention;

[0027] Figure 7 Schematic diagram of the motion component structure of the present invention;

[0028] Figure 8 Schematic diagram of the reciprocating roller structure of the present invention.

[0029] The reference numerals in the figure respectively represent:

[0030] 1. Outer shell;

[0031] The fixing component includes: 21. Wash plate liquid box; 22. Side bracket; 23. Drawer square frame; 24. Adjusting wheel; 25. Adjusting gear; 26. Spacing adjusting rack; 27. Bearing rod;

[0032] The cleaning component includes: 31. Water pump; 32. Fixed rack; 33. Motion gear; 34. Connecting rod; 35. Bottom spray pipe; 36. Long rod; 37. Sliding ring; 38. Spacing adjusting frame; 39. Delivery pipe; 310. Telescopic pipe; 311. Moving frame; 312. Moving shell; 313. Liquid supply pipe; 314. Annular pipe; 315. Spray ring;

[0033] The motion component includes: 41. Bidirectional motor; 42. Tooth disc; 43. Reciprocating roller; 44. Forward gear; 45. Fixed block; 46. Lever; 47. Arc plate; 48. Block. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Refer to Figures 1 to 8 , a circuit board double-sided cleaning machine according to a preferred embodiment of the present invention will be described in detail below.

[0036] A circuit board double-sided cleaning machine for cleaning both sides of a circuit board, including an outer shell 1, and a cleaning component for cleaning both sides of the circuit board is provided inside the outer shell 1, and a motion component for cleaning the circuit board along an S-shaped path is provided inside the outer shell 1.

[0037] Inside the housing 1, there is a fixing component for fixing the circuit board from the side. The fixing component includes a circuit board washing liquid box 21 fixedly connected inside the housing 1. Inside the circuit board washing liquid box 21, there are multiple layers of filter screens and filter cotton for filtering out impurities in the recycled circuit board washing liquid. At the top of the circuit board washing liquid box 21, there is a side bracket 22 fixedly connected. Inside the side bracket 22, there is a drawer square box 23 slidably connected. On the front of the drawer square box 23, there is a handle for conveniently pulling out the drawer square box 23. Outside the drawer square box 23, there is an adjusting wheel 24 rotatably connected.

[0038] Inside the drawer square box 23, there is an adjusting gear 25 rotatably connected. The adjusting gear 25 is fixedly connected to the adjusting wheel 24. Inside the drawer square box 23, there is an adjusting distance rack 26 slidably connected. The adjusting distance rack 26 is symmetrically arranged with the adjusting gear 25 as the center of symmetry. One adjusting distance rack 26 is located at the top of the adjusting gear 25, and the other adjusting distance rack 26 is located at the bottom of the adjusting gear 25. The adjusting distance rack 26 meshes with the adjusting gear 25. The end of the adjusting distance rack 26 away from the adjusting gear 25 is fixedly connected to a bearing rod 27. There are two bearing rods 27. On the top of the bearing rod 27, there is a stepped groove for placing and clamping the circuit board.

[0039] The cleaning component includes a water pump 31 fixedly connected inside the circuit board washing liquid box 21. The water pump 31 is communicated with the circuit board washing liquid box 21 so that the water pump 31 can pump the circuit board washing liquid inside the circuit board washing liquid box 21. Inside the side bracket 22, there are two fixed racks 32 fixedly connected. At the top of the fixed racks 32, there is a moving gear 33 meshing. Outside the moving gear 33, there is a connecting rod 34 rotatably connected. At the bottom of the connecting rod 34, there is a bottom spray pipe 35 fixedly connected. On the top of the bottom spray pipe 35, there are multiple nozzles. The bottom spray pipe 35 is slidably connected with the side bracket 22.

[0040] Inside the moving gear 33, there is a long rod 36 fixedly connected. At the top of the long rod 36, there is a sliding groove. Outside the long rod 36, there is a sliding ring 37 slidably connected. Inside the sliding ring 37, there is a convex block which is slidably connected inside the sliding groove. Outside the sliding ring 37, there is an adjusting distance frame 38 rotatably connected. At the bottom of the adjusting distance frame 38, there are rollers for reducing the friction during sliding. The adjusting distance frame 38 is slidably connected with the bearing rod 27. Outside the bottom spray pipe 35, there is a conveying pipe 39 fixedly connected. The conveying pipe 39 is communicated with the bottom spray pipe 35. The water pump 31 is communicated with the conveying pipe 39 through a hose. On the top of the conveying pipe 39, there is a telescopic pipe 310 fixedly connected.

[0041] A moving frame 311 is slidably connected to the top of the side bracket 22. Rollers are arranged at both ends of the moving frame 311 to reduce the friction during sliding. A moving shell 312 is slidably connected to the bottom of the moving frame 311. The moving frame 311 is fixedly connected to the telescopic tube 310. One end of the telescopic tube 310 away from the conveying tube 39 is fixedly connected to a liquid delivery tube 313. A ring-shaped tube 314 is fixedly connected to the bottom of the moving shell 312. The liquid delivery tube 313 is communicated with the ring-shaped tube 314. A spraying ring 315 is rotatably connected to the bottom of the ring-shaped tube 314. A circle of spray nozzles is arranged at the bottom of the spraying ring 315, and the spray nozzles are inclined towards the center of the spraying ring 315.

[0042] The motion assembly includes a bidirectional motor 41 fixedly connected to the top of the moving shell 312. The output shaft of the bidirectional motor 41 is fixedly connected to a gear disk 42. A reciprocating roller 43 is fixedly connected to the bottom of the gear disk 42. The two reciprocating rollers 43 are in contact with the long rod 36.

[0043] A fixed block 45 is rotatably connected inside the moving shell 312. A sensor is arranged on one side of the fixed block 45 close to the sliding ring 37, and the sensor is connected to the bidirectional motor 41 through a wire. When the fixed block 45 contacts the sliding ring 37, the sensor controls the output shaft of the bidirectional motor 41 to rotate in the reverse direction. Two forward gears 44 are fixedly connected to the outside of the fixed block 45. Only one of the two forward gears 44 meshes with the gear disk 42. The forward gears 44 are located inside the moving shell 312. A lever 46 is fixedly connected to the outside of the fixed block 45. An arc-shaped plate 47 is slidably connected to the outside of the forward gear 44. The arc-shaped plate 47 is slidably connected to the two forward gears 44. A clamping block 48 is slidably connected inside the arc-shaped plate 47, and the clamping block 48 is fixedly connected to the moving shell 312.

[0044] The following is the entire working process and principle of the above embodiment: The user pulls the handle on the outside of the drawer box 23 to draw the drawer box 23 out of the housing 1. The user rotates the adjustment wheel 24 clockwise. The adjustment wheel 24 drives the adjustment gear 25 fixedly connected thereto to rotate. The adjustment gear 25 meshes with the distance adjustment rack 26. The adjustment gear 25 drives the distance adjustment rack 26 at the top of the adjustment gear 25 to move to the right. The distance adjustment rack 26 at the top of the adjustment gear 25 drives the load-bearing rod 27 fixedly connected thereto to move to the right, causing the left and right load-bearing rods 27 to approach each other. Since a stepped groove is provided at the top of the load-bearing rod 27, the user can place both sides of the circuit board in the two stepped grooves. By rotating the adjustment wheel 24 to adjust the distance between the two load-bearing rods 27, the two sides of the circuit board are clamped by the load-bearing rods 27. The user pushes the handle on the outside of the drawer box 23 to draw the drawer box 23 out of the housing 1, achieving the effect of fixing the circuit board. Compared with the traditional clamping device, the bottom of the circuit board is exposed, facilitating direct cleaning of the bottom of the circuit board subsequently. At the same time, the load-bearing rod 27 drives the distance adjustment frame 38 slidably connected thereto to move. The distance adjustment frame 38 drives the sliding ring 37 rotatably connected thereto to slide on the top of the long rod 36 towards the moving housing 312, making the distance between the two sliding rings 37 equal to the width of both sides of the circuit board. Since the width of the left and right movement of the spraying ring 315 is limited by the sliding ring 37, the width of the left and right movement of the spraying ring 315 is the same as the width of both sides of the circuit board, achieving the effect of adjusting the width of the left and right movement of the spraying ring 315. Compared with the fixed spraying width of the traditional cleaning machine, the device automatically adjusts the spraying width of the spraying ring 315 to be the same as the width of the circuit board, thereby saving the usage amount of the circuit board cleaning liquid.

[0045] Further, the user turns on the water pump 31. The water pump 31 extracts the washing liquid inside the washing liquid box 21 and transports it into the inside of the conveying pipe 39 through a hose, and enters the bottom spray pipe 35 through the conveying pipe 39 and sprays out from multiple nozzles at the top, spraying towards the bottom of the circuit board, so that the bottom of the circuit board is cleaned. At the same time, the washing liquid inside the conveying pipe 39 enters the telescopic pipe 310 and flows towards the liquid supply pipe 313. The washing liquid enters the annular pipe 314 through the liquid supply pipe 313. Since the annular pipe 314 is communicated with the spray ring 315, the washing liquid enters the spray ring 315 through the annular pipe 314 and sprays out from the nozzles in a circle at the bottom of the spray ring 315. Since the nozzles are inclined towards the center of the spray ring 315, the washing liquid sprayed out by the nozzles will be sprayed obliquely towards the electronic components on the circuit board to clean the sides of the electronic components. The user turns on the bidirectional motor 41. The output shaft of the bidirectional motor 41 drives the gear disk 42 fixedly connected thereto to rotate. The gear disk 42 drives the reciprocating roller 43 fixedly connected thereto to rotate. The reciprocating roller 43 generates friction with the long rod 36, so that the reciprocating roller 43 rotates outside the long rod 36 and moves towards the sliding ring 37. The reciprocating roller 43 drives the gear disk 42 to move towards the sliding ring 37. The gear disk 42 drives the bidirectional motor 41 to move towards the sliding ring 37. The bidirectional motor 41 drives the moving shell 312 to move towards the sliding ring 37, and the moving shell 312 drives the liquid supply pipe 313 to make the telescopic pipe 310 contract. The moving shell 312 drives the spray ring 315 to move towards the sliding ring 37, so that the spray ring 315 moves to clean the surface of the circuit board. At the same time, the rotation of the reciprocating roller 43 drives the spray ring 315 fixedly connected thereto to rotate, and the nozzles in a circle at the bottom of the spray ring 315 rotate. The washing liquid sprayed out by the spray ring 315 forms a uniform ring, avoiding the uneven spraying of the washing liquid caused by the gaps between the nozzles. The rotation and lateral movement of the spray ring 315 enable the sprayed annular washing liquid water flow to wash all around the small electronic components, achieving the effect of cleaning both sides of the circuit board. At the same time, the nozzles arranged obliquely in a circle at the bottom of the bottom spray pipe 35 can wash the outside of the electronic components on the circuit board, so that the outside of the electronic components is better washed, improving the cleaning effect.

[0046] Further, the moving shell 312 drives the fixed block 45 slidably connected thereto to move towards the sliding ring 37. The fixed block 45 drives the lever 46 fixedly connected thereto to move towards the sliding ring 37. The fixed block 45 drives the lever 46 fixedly connected thereto to insert into the inside of the sliding ring 37. The sliding ring 37 squeezes the fixed block 45 to push the fixed block 45 to move into the inside of the moving shell 312. The fixed block 45 drives the forward gear 44 fixedly connected thereto to move towards the toothed disc 42. The forward gear 44 meshes with the toothed disc 42. At the same time, the fixed block 45 pushes the arc-shaped plate 47 slidably connected thereto to move towards the symmetric forward gear 44. The arc-shaped plate 47 pushes the symmetric forward gear 44 to move away from the toothed disc 42. Since there are two forward gears 44, the right forward gear 44 moves away from the toothed disc 42. Since a sensor is provided on the side of the fixed block 45 close to the sliding ring 37 and the sensor is connected to the bidirectional motor 41 through a circuit, the fixed block 45 drives the lever 46 to completely insert into the inside of the sliding ring 37. When the fixed block 45 contacts the sliding ring 37, the sensor controls the output shaft of the bidirectional motor 41 to rotate in the reverse direction. The output shaft of the bidirectional motor 41 rotates in the reverse direction. The output shaft of the bidirectional motor 41 drives the reciprocating roller 43 to rotate in the reverse direction. The reciprocating roller 43 moves away from the sliding ring 37 at the top of the long rod 36. The reciprocating roller 43 drives the bidirectional motor 41 to move the fixed block 45 away from the sliding ring 37. The fixed block 45 drives the lever 46 to move away from the sliding ring 37. At the same time, the output shaft of the bidirectional motor 41 drives the toothed disc 42 fixedly connected thereto to rotate in the reverse direction. The toothed disc 42 drives the forward gear 44 to rotate in the reverse direction. The forward gear 44 drives the fixed block 45 to make the lever 46 rotate in the reverse direction. Since there are bumps inside the sliding ring 37 and the bumps are slidably connected to the inside of the chute of the long rod 36, the lever 46 pushes the bumps inside the sliding ring 37 to make the sliding ring 37 rotate in the reverse direction. The reverse rotation of the sliding ring 37 drives the long rod 36 slidably connected thereto to rotate in the reverse direction. The long rod 36 drives the moving gear 33 fixedly connected thereto to rotate in the reverse direction. Since the moving gear 33 meshes with the fixed rack 32, the left forward gear 44 moves on the top of the fixed rack 32. The fixed block 45 drives the lever 46 to move away from the sliding ring 37. When the lever 46 moves out of the sliding ring 37, the lever 46 stops driving the sliding ring 37 to move. Therefore, the sliding ring 37 stops driving the forward gear 44 to move, so that the forward gear 44 moves a certain distance on the top of the fixed rack 32. The moving shell 312 continues to move away from the sliding ring 37. The moving shell 312 passes over the circuit board. The spray ring 315 at the bottom of the moving shell 312 continuously cleans the top of the circuit board. Therefore, the moving shell 312 reciprocates left and right, and the moving gear 33 rotates intermittently, so that the moving shell 312 passes over the top of the circuit board along an S-shaped path and the spray ring 315 cleans the top of the circuit board, achieving the effect that the spray ring 315 cleans the circuit board along an S-shaped path. Compared with the traditional method of sweeping the circuit board with a single row of nozzles, since the circuit board is large in size, the S-shaped path movement of the spray ring 315 can clean the circuit board step by step and carefully.Moreover, the structure of the device is simple, and only through the bidirectional motor 41 can the complex movement process of the S-shaped path of the spraying ring 315 be realized.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-sided cleaning machine for circuit boards, used to clean both sides of a circuit board, including a housing (1), characterized in that: Inside the housing (1), a cleaning component for cleaning both sides of the circuit board is provided, and a moving component for cleaning the circuit board along an S-shaped path is provided inside the housing (1).

2. The double-sided cleaning machine for circuit boards according to claim 1, wherein: Inside the housing (1), a fixing component for fixing the circuit board from the side is provided. The fixing component includes a flux box (21) fixedly connected to the inside of the housing (1). A side bracket (22) is fixedly connected to the top of the flux box (21). A drawer square frame (23) is slidably connected to the inside of the side bracket (22). An adjusting wheel (24) is rotatably connected to the outside of the drawer square frame (23).

3. The double-sided cleaning machine for circuit boards according to claim 2, wherein: An adjusting gear (25) is rotatably connected to the inside of the drawer square frame (23). The adjusting gear (25) is fixedly connected to the adjusting wheel (24). A distance-adjusting rack (26) is slidably connected to the inside of the drawer square frame (23). The distance-adjusting rack (26) meshes with the adjusting gear (25). One end of the distance-adjusting rack (26) away from the adjusting gear (25) is fixedly connected to a bearing rod (27). A stepped groove is provided at the top of the bearing rod (27).

4. The double-sided cleaning machine for circuit boards according to claim 2, wherein: The cleaning component includes a water pump (31) fixedly connected to the inside of the flux box (21). A fixed rack (32) is fixedly connected to the inside of the side bracket (22). A moving gear (33) meshes with the top of the fixed rack (32). A connecting rod (34) is rotatably connected to the outside of the moving gear (33). A bottom spray pipe (35) is fixedly connected to the bottom of the connecting rod (34). The bottom spray pipe (35) is slidably connected to the side bracket (22).

5. The double-sided cleaning machine for circuit boards according to claim 4, wherein: A long rod (36) is fixedly connected to the inside of the moving gear (33). A sliding ring (37) is slidably connected to the outside of the long rod (36). An adjusting frame (38) is rotatably connected to the outside of the sliding ring (37). The adjusting frame (38) is slidably connected to the bearing rod (27). A delivery pipe (39) is fixedly connected to the outside of the bottom spray pipe (35). The delivery pipe (39) is communicated with the bottom spray pipe (35). The water pump (31) is communicated with the delivery pipe (39) through a hose. A telescopic pipe (310) is fixedly connected to the top of the delivery pipe (39).

6. The double-sided cleaning machine for circuit boards according to claim 2, wherein: A moving frame (311) is slidably connected to the top of the side bracket (22). A moving shell (312) is slidably connected to the bottom of the moving frame (311). The moving frame (311) is fixedly connected to the telescopic pipe (310). One end of the telescopic pipe (310) away from the delivery pipe (39) is fixedly connected to a liquid supply pipe (313). An annular pipe (314) is fixedly connected to the bottom of the moving shell (312). The liquid supply pipe (313) is communicated with the annular pipe (314). A spray ring (315) is rotatably connected to the bottom of the annular pipe (314).

7. A double-sided cleaning machine for circuit boards according to claim 1, wherein: The moving component includes a bidirectional motor (41) fixedly connected to the top of the moving shell (312). The output shaft of the bidirectional motor (41) is fixedly connected to a toothed disc (42). A reciprocating roller (43) is fixedly connected to the bottom of the toothed disc (42). The reciprocating roller (43) contacts the long rod (36).

8. A double-sided cleaning machine for circuit boards according to claim 6, characterized in that: A fixed block (45) is rotatably connected inside the moving shell (312). An advancing gear (44) is fixedly connected to the outside of the fixed block (45). The advancing gear (44) is located inside the moving shell (312). A lever (46) is fixedly connected to the outside of the fixed block (45). An arc-shaped plate (47) is slidably connected to the outside of the advancing gear (44). A clamping block (48) is slidably connected inside the arc-shaped plate (47). The clamping block (48) is fixedly connected to the moving shell (312).

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