A multifunctional printed circuit board surface spraying treatment device

Abstract

This invention relates to the field of spray coating equipment technology, specifically to a multifunctional printed circuit board surface spray coating equipment, comprising a machine body. A No. 1 motor is fixedly connected to the side wall of the machine body via a bracket. A No. 1 rotating shaft is fixedly connected to the output end of the No. 1 motor. The No. 1 rotating shaft is rotatably connected to both side walls of the machine body via bearings. A drive roller is fixedly connected circumferentially to the No. 1 rotating shaft, and a driven roller is rotatably connected between the inner walls of the machine body. This invention, through the provision of horizontal and vertical clamping and fixing components, can achieve efficient centering clamping of printed circuit boards of different widths. Through the provision of transmission components, the power of the conveying drive motor can be synchronously transmitted to multiple dust removal components. These dust removal components effectively complete the dust removal process after spraying, thereby ensuring the cleanliness of the printed circuit board surface and the appearance quality of the coating after spraying.

Description

Technical Field

[0001] This invention relates to the field of spray coating equipment technology, and more specifically to a multifunctional spray coating equipment for printed circuit board surfaces. Background Technology

[0002] As the core carrier of electronic devices, the surface properties of printed circuit boards directly affect the stability and service life of electronic devices. Surface coating is one of the key processes in the production and processing of printed circuit boards. By spraying functional coatings such as anti-oxidation, insulation, and moisture-proof coatings, the environmental adaptability and reliability of printed circuit boards can be improved.

[0003] A search revealed that patent document CN220195311U discloses a spraying device for printed circuit board processing, including a base, a support and a displacement mechanism for driving the support to move on one side of the base, and two sets of both the spraying machine and the displacement mechanism. This patent can shorten the curing time of the coating sprayed on the surface of the circuit board.

[0004] Existing printed circuit board (PCB) surface coating equipment suffers from several technical defects. First, the clamping and positioning accuracy is insufficient. Traditional equipment often uses single-sided clamping or simple lifting methods, which can easily cause the PCB to shift or shake during the coating process, resulting in uneven coating thickness and edge overflow. This is especially problematic for thin PCBs, where improper clamping force can even cause board deformation. Second, there is a lack of effective dust removal mechanisms. After coating, PCBs are easily contaminated with dust and other impurities during transport, requiring appropriate dust removal measures. Third, the power transmission coordination is poor. Some equipment uses independent power sources for conveying, clamping, and dust removal functions, resulting in complex structures and high control difficulty. This can easily lead to asynchronous operations, affecting the continuity of processing. Fourth, the equipment has narrow adaptability, making it difficult to flexibly adapt to PCBs of different sizes and specifications. Adjustments are cumbersome, increasing production changeover costs. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a multifunctional printed circuit board surface spraying treatment device that effectively solves the problems of low clamping accuracy, lack of effective dust removal, poor power coordination, and poor adaptability in existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a multifunctional printed circuit board surface spraying treatment device, comprising a machine body, a first motor fixedly connected to the side wall of the machine body via a bracket, a first rotating shaft fixedly connected to the output end of the first motor, the first rotating shaft being rotatably connected to the two side walls of the machine body via bearings, a drive roller fixedly connected circumferentially to the first rotating shaft, a driven roller rotatably connected between the inner walls of the machine body, a conveyor belt sleeved between the drive roller and the driven roller, a support frame fixedly connected to the upper surface of the machine body, a spraying unit fixedly mounted on the inner top surface of the support frame, a second motor fixedly connected to the side wall of the support frame via a bracket, a second rotating shaft and a third rotating shaft provided above the machine body, the second and third rotating shafts being rotatably connected to the two side walls of the support frame via bearings respectively, and the output end of the second motor being fixedly connected to the side end of the second rotating shaft; The processing mechanism includes two horizontal clamping and fixing components, two vertical clamping and fixing components, a transmission component, and multiple dust removal components. The horizontal clamping and fixing components include a bearing column fixedly connected to the side end of the second rotating shaft. Both ends of the bearing column are provided with cylindrical grooves, and sliding columns are slidably connected in both cylindrical grooves. An electric push rod is fixedly connected to the bottom surface of the bearing column through a bracket. The output end of the electric push rod is slidably connected to the upper surface of the bearing column. Two sliding grooves are provided on the upper surface of the bearing column. Connecting rods are hinged to both sides of the output end of the electric push rod. The bottom ends of the two connecting rods are respectively hinged to the upper end surfaces of the two sliding columns.

[0007] According to the above-mentioned multifunctional printed circuit board surface spraying treatment equipment, the vertical clamping and fixing assembly includes a bearing plate fixedly connected to the side end of the sliding column. A base plate and a strip block are fixedly connected to the side wall of the bearing plate. A lower clamping plate is provided above the base plate. Multiple guide rods are fixedly connected to the bottom surface of the lower clamping plate. The multiple guide rods are slidably connected to the bottom surface of the base plate. Multiple No. 1 springs are fixedly connected between the lower clamping plate and the base plate. A groove is opened on the side wall of the strip block. An inclined pressure block is slidably connected in the groove. Multiple No. 2 springs are fixedly connected between the inclined pressure block and the inner wall of the groove.

[0008] According to the above-mentioned multifunctional printed circuit board surface spraying treatment equipment, the transmission component includes a mounting frame fixedly connected to the upper surface of the machine body, a fixing plate fixedly connected to the side wall of the mounting frame, a fourth rotating shaft and a fifth rotating shaft provided on the upper part of the machine body, the fourth rotating shaft being rotatably connected to the side wall of the fixing plate through a bearing, the fifth rotating shaft being rotatably connected to the two side walls of the mounting frame through a bearing, a driving wheel and a driven wheel being fixedly connected to the first rotating shaft and the fourth rotating shaft respectively in the circumferential direction, a belt being sleeved between the driving wheel and the driven wheel, a first bevel gear being fixedly connected to the side end of the fourth rotating shaft, and a second bevel gear being fixedly connected to the circumferential direction of the fifth rotating shaft, the first bevel gear and the second bevel gear meshing.

[0009] According to the above-mentioned multifunctional printed circuit board surface spraying treatment equipment, the dust removal component includes a through groove opened on the upper surface of the mounting frame, a ventilation cylinder fixedly connected to the inner wall of the through groove, a No. 6 rotating shaft provided in the ventilation cylinder, the No. 6 rotating shaft being rotatably connected to the upper surface of the ventilation cylinder through a bearing, a No. 3 bevel gear fixedly connected to the circumference of the No. 5 rotating shaft, a No. 4 bevel gear fixedly connected to the top of the No. 6 rotating shaft, the No. 3 bevel gear meshing with the No. 4 bevel gear, an exhaust fan blade fixedly connected to the bottom of the No. 6 rotating shaft, and multiple filter holes opened on the upper surface of the ventilation cylinder.

[0010] According to the above-mentioned multifunctional printed circuit board surface spraying treatment equipment, a filter screen is fixedly installed inside the ventilation duct, and multiple exhaust fan blades are respectively located inside multiple ventilation ducts.

[0011] According to the above-mentioned multifunctional printed circuit board surface spraying treatment equipment, the two lateral clamping and fixing components are respectively fixed to the second rotating shaft and the third rotating shaft close to one end.

[0012] According to the above-mentioned multifunctional printed circuit board surface spraying treatment equipment, the two vertical clamping and fixing components are respectively fixed on both sides of the two horizontal clamping and fixing components.

[0013] According to the above-mentioned multifunctional printed circuit board surface spraying treatment equipment, the outer side wall of the conveyor belt is provided with multiple protrusions at equal intervals along the axial direction of the first rotating shaft, and the diameter of the driving wheel is larger than the diameter of the driven wheel.

[0014] The technical solution provided by this invention has the following advantages compared with the known prior art: 1. This invention features a horizontal clamping and fixing component and a vertical clamping and fixing component. The horizontal component uses an electric push rod to drive the sliding column to extend and retract synchronously, achieving centered clamping of printed circuit boards of different widths. The vertical component uses an elastic spring and a beveled pressure block to achieve vertical elastic clamping and lateral auxiliary positioning of the printed circuit board, avoiding board deformation and surface damage. The fixing operation is convenient and efficient. The structural design of the beveled pressure block allows for easy downward pressing when fixing the printed circuit board to be sprayed. When it is necessary to release the clamp, it can be achieved by controlling the two electric push rods, making it more efficient and convenient.

[0015] 2. The present invention, through the transmission components, can transmit the power of the conveyor drive motor to the driven wheel through the driving wheel and belt to achieve speed-up transmission, and then complete the power steering through the meshing of bevel gears, and synchronously transmit it to the No. 5 rotating shaft, providing stable and efficient power support for multiple dust removal components, eliminating the need for additional dust removal power sources, simplifying the equipment structure and reducing energy consumption.

[0016] 3. The dust removal component of this invention can draw uncured coating particles, dust, and other impurities from the surface of the printed circuit board into the ventilation duct during the conveyor belt transportation process after the printed circuit board is coated. The negative pressure generated by the rotation of the exhaust fan blades helps to filter and collect the impurities through the dust removal filter screen, and the dustproof filter holes prevent dust backflow. This effectively completes the dust removal process after coating, ensuring the cleanliness of the surface of the printed circuit board and the appearance quality of the coating, and avoiding damage to the uncured coating caused by manual dust removal. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional diagram of the present invention; Figure 3 This is a three-dimensional structural schematic diagram from another perspective of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the present invention from another perspective; Figure 5 for Figure 2 Enlarged view of point A in the middle; Figure 6 for Figure 2 Enlarged view of point B in the middle.

[0019] Reference numerals: 1. Machine body; 11. Motor No. 1; 12. Shaft No. 1; 13. Driven roller; 14. Driven roller; 15. Conveyor belt; 16. Support frame; 17. Spraying unit; 18. Motor No. 2; 19. Shaft No. 2; 110. Shaft No. 3; 2. Lateral clamping and fixing assembly; 21. Support column; 22. Columnar groove; 23. Sliding column; 24. Electric push rod; 25. Slide groove; 26. Connecting rod; 3. Vertical clamping and fixing assembly; 31. Support plate; 32. Base plate; 33. Strip block; 34. Lower... 35. Clamping plate; 36. Guide rod; 37. Spring No. 1; 38. Groove; 39. Inclined pressure block; 40. Spring No. 2; 41. Transmission assembly; 42. Mounting bracket; 43. Fixing plate; 44. Shaft No. 4; 45. Shaft No. 5; 46. Drive wheel; 47. Driven wheel; 48. Belt; 49. Bevel gear No. 1; 50. Bevel gear No. 2; 51. Dust removal assembly; 52. Through groove; 53. Ventilation duct; 54. Shaft No. 6; 55. Bevel gear No. 3; 56. Exhaust fan blade; 57. Filter hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] Example: Refer to Figures 1 to 6A multifunctional printed circuit board surface spraying treatment device includes a machine body 1. A No. 1 motor 11 is fixedly connected to the side wall of the machine body 1 via a bracket. A No. 1 rotating shaft 12 is fixedly connected to the output end of the No. 1 motor 11. The No. 1 rotating shaft 12 is rotatably connected to the two side walls of the machine body 1 through bearings. A drive roller 13 is fixedly connected circumferentially to the No. 1 rotating shaft 12. A driven roller 14 is rotatably connected between the inner walls of the machine body 1. A conveyor belt 15 is sleeved between the drive roller 13 and the driven roller 14. A support frame 16 is fixedly connected to the upper surface of the machine body 1. A spraying unit 17 is fixedly installed on the inner top surface of the frame 16. A second motor 18 is fixedly connected to the side wall of the support frame 16 through a bracket. A second rotating shaft 19 and a third rotating shaft 110 are provided on the top of the machine body 1. The second rotating shaft 19 and the third rotating shaft 110 are respectively rotatably connected to the two side walls of the support frame 16 through bearings. The output end of the second motor 18 is fixedly connected to the side end of the second rotating shaft 19. Multiple protrusions are equidistantly arranged on the outer side wall of the conveyor belt 15 along the axial direction of the first rotating shaft 12 to reduce the contact area between the printed circuit board and the conveyor belt 15. The processing mechanism includes two horizontal clamping and fixing components 2, two vertical clamping and fixing components 3, a transmission component 4, and multiple dust removal components 5. The horizontal clamping and fixing components 2 include a bearing column 21 fixedly connected to the side end of the second rotating shaft 19. Both ends of the bearing column 21 are provided with cylindrical grooves 22. Sliding columns 23 are slidably connected in both cylindrical grooves 22. The bottom surface of the bearing column 21 is fixedly connected to an electric push rod 24 through a bracket. The output end of the electric push rod 24 is slidably connected to the upper surface of the bearing column 21. Two sliding grooves 25 are provided on the upper surface of the bearing column 21. Connecting rods 26 are hinged to both sides of the output end of the electric push rod 24. The bottom ends of the two connecting rods 26 are respectively hinged to the upper end faces of the two sliding columns 23. The vertical clamping and fixing assembly 3 includes a bearing plate 31 fixedly connected to the side end of the sliding column 23. A base plate 32 and a strip block 33 are fixedly connected to the side wall of the bearing plate 31. A lower clamping plate 34 is provided above the base plate 32. Multiple guide rods 35 are fixedly connected to the bottom surface of the lower clamping plate 34. The multiple guide rods 35 are all slidably connected to the bottom surface of the base plate 32. Multiple first springs 36 are fixedly connected between the lower clamping plate 34 and the base plate 32. A groove 37 is opened on the side wall of the strip block 33. An inclined pressure block 38 is slidably connected in the groove 37. Multiple second springs 39 are fixedly connected between the inclined pressure block 38 and the inner wall of the groove 37. Two horizontal clamping and fixing assemblies 2 are respectively fixedly set with a second rotating shaft 19 and a third rotating shaft 110 close to one end. Two vertical clamping and fixing assemblies 3 are respectively fixedly set on both sides of the two horizontal clamping and fixing assemblies 2. The transmission assembly 4 includes a mounting bracket 41 fixedly connected to the upper surface of the body 1. A fixing plate 42 is fixedly connected to the side wall of the mounting bracket 41. A fourth rotating shaft 43 and a fifth rotating shaft 44 are provided on the upper part of the body 1. The fourth rotating shaft 43 is rotatably connected to the side wall of the fixing plate 42 through a bearing. The fifth rotating shaft 44 is rotatably connected to the two side walls of the mounting bracket 41 through a bearing. A driving wheel 45 and a driven wheel 46 are fixedly connected to the first rotating shaft 12 and the fourth rotating shaft 43 respectively in the circumferential direction. A belt 47 is sleeved between the driving wheel 45 and the driven wheel 46. A first bevel gear 48 is fixedly connected to the side end of the fourth rotating shaft 43. A second bevel gear 49 is fixedly connected to the circumferential direction of the fifth rotating shaft 44. The first bevel gear 48 and the second bevel gear 49 mesh with each other. The dust removal assembly 5 includes a through groove 51 on the upper surface of the mounting frame 41. A ventilation duct 52 is fixedly connected to the inner wall of the through groove 51. A sixth rotating shaft 53 is installed inside the ventilation duct 52. The sixth rotating shaft 53 is rotatably connected to the upper surface of the ventilation duct 52 through a bearing. A third bevel gear 54 is fixedly connected to the circumference of the fifth rotating shaft 44. A fourth bevel gear 55 is fixedly connected to the top of the sixth rotating shaft 53. The third bevel gear 54 and the fourth bevel gear 55 mesh with each other. An exhaust fan blade 56 is fixedly connected to the bottom of the sixth rotating shaft 53. Multiple filter holes 57 are opened on the upper surface of the ventilation duct 52. A filter screen is fixedly installed inside the ventilation duct 52. The filter screen is located below the multiple filter holes 57. Multiple exhaust fan blades 56 are located in multiple ventilation ducts 52 respectively. The diameter of the driving wheel 45 is larger than the diameter of the driven wheel 46.

[0023] The working principle of this invention is as follows: In use, according to the size and specifications of the printed circuit board to be sprayed, the second motor is started, and the rotation of the second rotating shaft 19 and the third rotating shaft 110 is synchronized to adjust the flipping angle of the horizontal clamping and fixing component 2 to the horizontal clamping state. The electric push rod 24 is started to drive the sliding column 23 to extend and retract, and the distance between the two sliding columns 23 is adjusted to match the width of the printed circuit board. The spraying pressure and spraying height of the spraying unit 17 are adjusted to ensure that the spraying range covers the surface of the printed circuit board. At the same time, the flipping flexibility and reset accuracy of the clamping component are tested to ensure smooth switching between double-sided spraying. When fixing the printed circuit board, the operator needs to press the printed circuit board down towards the inclined surface of the inclined pressure block 38. The inclined pressure block 38 retracts into the groove 37 under pressure. The printed circuit board continues to be pressed down, which drives the lower clamping plate 34 to move downward and compress the first spring 36. When the printed circuit board completely passes the inclined pressure block 38, the inclined pressure block 38 pops out under the action of the second return spring 1. After the printed circuit board is released, the lower clamping plate 34 returns to its original position under the action of the first spring 36. The bottom surface of the inclined pressure block 38 and the upper surface of the lower clamping plate 34 cooperate to complete the clamping of the printed circuit board. At the same time, the electric push rod 24 is started, which drives the two sliding columns 23 to extend and retract inward synchronously through the connecting rod 26. The lateral clamping and fixing component 2 realizes the lateral centering clamping of the printed circuit board to ensure accurate positioning. After positioning is completed, the spraying unit 17 is started, and the spraying unit 17 evenly sprays the coating onto the surface of the printed circuit board. During the spraying process, the clamping component remains in the positioning state to ensure that the printed circuit board does not shift. After the single-sided spraying is completed, the second motor is started, driving the clamping component and the printed circuit board to rotate 180° synchronously, completing the flipping of the printed circuit board, and spraying the other surface of the printed circuit board. After both sides are sprayed, the two electric push rods 24 are started, causing the two sliding columns 23 in the horizontal clamping and fixing component 2 to extend outward synchronously, thereby driving the two vertical clamping and fixing components 3 to move away from each other. With the assistance of external force, the printed circuit board is detached from the horizontal clamping and fixing component 2 and the vertical clamping and fixing component 3 and falls onto the conveyor belt 15, completing the unloading. The printed circuit board continues to be transported to the lower end with the conveyor belt 15. During this process, the power of the conveyor drive motor continues to be supplied. The drive wheel 45 and belt 47 on shaft 12 transmit power to driven wheel 46, which drives shaft 43 to rotate at an increased speed. Shaft 43 drives shaft 5 to rotate through the meshing of bevel gear 48 and bevel gear 49. Shaft 44 drives shaft 5 to rotate through the meshing of bevel gear 54 and bevel gear 55. Shaft 5 drives multiple shafts 53 to rotate synchronously. The exhaust fan blades 56 rotate accordingly to generate negative pressure. Uncured coating particles and dust particles remaining on the surface of the printed circuit board are sucked into the ventilation duct 52 under the action of negative pressure. They are then filtered and collected by the dust removal filter. The dust filter holes 57 prevent dust backflow, thus completing the dust removal process during the transportation after spraying. When the equipment is running continuously, the above conveying, positioning, spraying, transportation and dust removal process is repeated. After the equipment is stopped, all motors and spraying units 17 are turned off, and the dust removal filter in the ventilation duct 52 and the nozzles of the spraying units 17 are cleaned.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional printed circuit board surface spraying treatment equipment, characterized in that, include: The machine body (1) has a No. 1 motor (11) fixedly connected to its side wall via a bracket. The output end of the No. 1 motor (11) is fixedly connected to a No. 1 rotating shaft (12). The No. 1 rotating shaft (12) is rotatably connected to both side walls of the machine body (1) via bearings. A drive roller (13) is fixedly connected circumferentially to the No. 1 rotating shaft (12). A driven roller (14) is rotatably connected between the inner walls of the machine body (1). A conveyor belt (15) is sleeved between the drive roller (13) and the driven roller (14). A support frame (16) is fixedly connected to the upper surface of the machine body (1). A spraying unit (17) is fixedly installed on the inner top surface of the support frame (16). A second motor (18) is fixedly connected to the side wall of the support frame (16) through a bracket. A second rotating shaft (19) and a third rotating shaft (110) are provided above the machine body (1). The second rotating shaft (19) and the third rotating shaft (110) are respectively rotatably connected to the two side walls of the support frame (16) through bearings. The output end of the second motor (18) is fixedly connected to the side end of the second rotating shaft (19). The processing mechanism includes two horizontal clamping and fixing components (2), two vertical clamping and fixing components (3), a transmission component (4), and multiple dust removal components (5). The horizontal clamping and fixing components (2) include a bearing column (21) fixedly connected to the side end of the second rotating shaft (19). Both ends of the bearing column (21) are provided with cylindrical grooves (22). Sliding columns (23) are slidably connected in both cylindrical grooves (22). An electric push rod (24) is fixedly connected to the bottom surface of the bearing column (21) through a bracket. The output end of the electric push rod (24) is slidably connected to the upper surface of the bearing column (21). Two sliding grooves (25) are provided on the upper surface of the bearing column (21). Connecting rods (26) are hinged to both sides of the output end of the electric push rod (24). The bottom ends of the two connecting rods (26) are respectively hinged to the upper end surfaces of the two sliding columns (23).

2. The multifunctional printed circuit board surface spraying treatment equipment according to claim 1, characterized in that, The vertical clamping and fixing assembly (3) includes a bearing plate (31) fixedly connected to the side end of the sliding column (23). A base plate (32) and a strip block (33) are fixedly connected to the side wall of the bearing plate (31). A lower clamping plate (34) is provided above the base plate (32). A plurality of guide rods (35) are fixedly connected to the bottom surface of the lower clamping plate (34). The plurality of guide rods (35) are slidably connected to the bottom surface of the base plate (32). A plurality of first springs (36) are fixedly connected between the lower clamping plate (34) and the base plate (32). A groove (37) is provided on the side wall of the strip block (33). An inclined pressure block (38) is slidably connected in the groove (37). A plurality of second springs (39) are fixedly connected between the inclined pressure block (38) and the inner wall of the groove (37).

3. The multifunctional printed circuit board surface spraying treatment equipment according to claim 1, characterized in that, The transmission assembly (4) includes a mounting bracket (41) fixedly connected to the upper surface of the body (1). A fixing plate (42) is fixedly connected to the side wall of the mounting bracket (41). A fourth rotating shaft (43) and a fifth rotating shaft (44) are provided on the upper part of the body (1). The fourth rotating shaft (43) is rotatably connected to the side wall of the fixing plate (42) through a bearing. The fifth rotating shaft (44) is rotatably connected to both side walls of the mounting bracket (41) through a bearing. The first rotating shaft (12) and the fourth rotating shaft (43) are respectively fixedly connected to a driving wheel (45) and a driven wheel (46) in the circumferential direction. A belt (47) is sleeved between the driving wheel (45) and the driven wheel (46). The fourth rotating shaft (43) is fixedly connected to a first bevel gear (48) on its side end. The fifth rotating shaft (44) is fixedly connected to a second bevel gear (49) in the circumferential direction. The first bevel gear (48) and the second bevel gear (49) mesh with each other.

4. The multifunctional printed circuit board surface spraying treatment equipment according to claim 3, characterized in that, The dust removal assembly (5) includes a through groove (51) on the upper surface of the mounting frame (41). A ventilation cylinder (52) is fixedly connected to the inner wall of the through groove (51). A sixth rotating shaft (53) is provided inside the ventilation cylinder (52). The sixth rotating shaft (53) is rotatably connected to the upper surface of the ventilation cylinder (52) through a bearing. A third bevel gear (54) is fixedly connected to the circumference of the fifth rotating shaft (44). A fourth bevel gear (55) is fixedly connected to the top of the sixth rotating shaft (53). The third bevel gear (54) meshes with the fourth bevel gear (55). An exhaust fan blade (56) is fixedly connected to the bottom of the sixth rotating shaft (53). Multiple filter holes (57) are provided on the upper surface of the ventilation cylinder (52).

5. The multifunctional printed circuit board surface spraying treatment equipment according to claim 4, characterized in that, A filter screen is fixedly installed inside the ventilation duct (52), and multiple exhaust fan blades (56) are located inside multiple ventilation ducts (52).

6. The multifunctional printed circuit board surface spraying treatment equipment according to claim 1, characterized in that, The two lateral clamping and fixing components (2) are respectively fixed to the second rotating shaft (19) and the third rotating shaft (110) at one end close to each other.

7. The multifunctional printed circuit board surface spraying treatment equipment according to claim 1, characterized in that, The two vertical clamping and fixing components (3) are respectively fixed on both sides of the two horizontal clamping and fixing components (2).

8. The multifunctional printed circuit board surface spraying treatment equipment according to claim 3, characterized in that, The outer side wall of the conveyor belt (15) is provided with multiple protrusions at equal intervals along the axial direction of the first rotating shaft (12), and the diameter of the driving wheel (45) is larger than the diameter of the driven wheel (46).

Images