A PCB board suction type non-contact cleaning device

Abstract

The invention discloses a suction-type non-contact cleaning device for a PCB board, which relates to the field of PCB board cleaning and comprises a driving mechanism, a grinding mechanism, a cleaning mechanism, a limiting mechanism, a measuring mechanism and a side plate. The driving mechanism is provided with two groups and is installed inside the side plate. The grinding mechanism is installed inside the side plate and is located between the two groups of driving mechanisms. The cleaning mechanism is provided on the right side of the grinding mechanism. The limiting mechanism is installed on the left side of the driving mechanism. The measuring mechanism is provided above the limiting mechanism. Multiple groups of grinding units are provided in the grinding mechanism to grind the PCB board. A cleaning brush is provided to further clean uneven places. The blowing port of the cleaning air knife blows out a high-speed airflow to blow up debris, and the suction port generates a negative pressure to suck in the debris and discharge it to the outside, thereby reducing contact with the PCB board while cleaning. The ion wind rod blows out an ion flow to neutralize the charge on the PCB board and the cleaning brush, reduce the adsorption of debris, and improve the cleaning effect.

Description

Technical Field

[0001] The invention relates to the field of PCB board cleaning, in particular to a PCB board suction type non-contact cleaning device. Background Art

[0002] PCB, or printed circuit board, is an indispensable component in electronic devices. At different stages of PCB manufacturing, a layer of oxide may form on the surface or other contaminants may accumulate. These substances will affect subsequent processes such as electroplating, welding and lamination. This requires grinding of the PCB board to remove surface oxides and other contaminants. During the grinding process, the PCB board will produce grinding debris, abrasive particles and abrasive residues. If these substances remain on the PCB surface, they may affect the performance and stability of the circuit. Cleaning can effectively remove these residues, thereby improving the adhesion of solder, flux and copper foil. A clean copper surface can ensure good electrical conductivity and signal transmission performance, thereby improving product reliability.

[0003] Nowadays, ceramic brushes, non-woven fabrics and abrasive belts are mainly used for grinding. The grinding process will leave tiny debris, abrasive particles or scratches on the surface of the PCB board. Traditional cleaning methods such as mechanical cleaning and water washing cleaning. Mechanical cleaning may cause further mechanical damage to the PCB board due to friction with the PCB board, affecting the quality and performance of the PCB, while water washing cleaning cannot completely remove tiny dust and debris. Therefore, a PCB board suction non-contact cleaning device is proposed to solve the above problems. Summary of the invention

[0004] In order to solve the above technical problems, a PCB board suction type non-contact cleaning device is provided. This technical solution solves the problem that traditional cleaning methods cause damage to PCB boards and incomplete cleaning.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A PCB board suction type non-contact cleaning device, comprising a device body and a device body, wherein the device body is installed inside the device body;

[0007] The equipment body includes a driving mechanism, a grinding mechanism, a cleaning mechanism, a limiting mechanism, a measuring mechanism and a side plate. The driving mechanism is provided with two groups and is installed inside the side plate. The grinding mechanism is installed inside the side plate and is located between the two groups of driving mechanisms. A cleaning mechanism is provided on the right side of the grinding mechanism. A limiting mechanism is installed on the left side of the driving mechanism. A measuring mechanism is provided above the limiting mechanism.

[0008] Wherein, the driving mechanism comprises driving rollers arranged in pairs, and a plurality of driving rollers are installed on the surface of the driving rollers, both ends of one driving roller are rotatably connected to the first sliding block, and both ends of the other driving roller are rotatably connected to the side plate;

[0009] The grinding mechanism comprises a top plate, a grinding unit and a bottom plate, the two ends of the top plate and the bottom plate are fixedly connected to the upper end and the lower end of the side plate respectively, and the grinding unit is provided in multiple groups and is fixedly installed on the surface of the top plate and the bottom plate respectively;

[0010] The cleaning mechanism includes a cleaning brush, a cleaning air knife, a conveying roller, an ion wind rod and an air supply assembly. The cleaning brushes are provided in multiple groups and both ends thereof are rotatably connected to the second sliding block. The second sliding block is arranged inside the side plate. The cleaning air knifes are provided in multiple groups and are located on the right side of the cleaning brush. Each group of the cleaning air knives is arranged facing each other. The conveying rollers are provided in multiple groups and are located on the right side of the cleaning brush. The ion wind rod is installed above the cleaning brush, and the air supply assembly is arranged below the cleaning air knife.

[0011] The cam is an assembly made of a plurality of springs, each of which is connected to a plurality of guide wheels, each of which is connected to a plurality of guide wheels having a plurality of rotations Thereof.

[0012] Preferably, the limiting mechanism includes a slide rail and a limiting slider, both ends of the slide rail are fixedly connected to the inner wall of the side plate, two limiting sliders are provided and both ends are slidably connected to the slide rail, the middle part of the limiting slider is threadedly connected with a screw rod, one end of the screw rod is rotatably connected to the inner wall of the side plate, and the other end of the screw rod is rotatably connected to a fixed block provided in the middle part of the slide rail, a fifth motor is installed on the surface of the side plate, the output end of the fifth motor is fixedly connected to the screw rod, a limiting rod is fixedly connected to the top of the limiting slider, and the surface of the limiting rod is rotatably connected to the limiting roller.

[0013] Preferably, the measuring mechanism includes a fixed plate and a laser scanning assembly, both ends of the fixed plate are fixedly connected to the inner wall of the side plate, the laser scanning assembly is installed on the lower surface of the fixed plate, and the laser scanning assembly is electrically connected to the grinding unit.

[0014] Preferably, the grinding unit includes a grinding wheel, a fixed bracket and an electric telescopic column, two ends of the grinding wheel are rotatably connected to the lower part of the fixed bracket, the upper end of the fixed bracket is fixedly connected to the output end of the electric telescopic column, a grinding motor is installed on one side of the fixed bracket, the output end of the grinding motor is fixedly connected to a third pulley, a fourth pulley is provided below the third pulley, the fourth pulley is fixedly connected to a rotating shaft on one side of the grinding wheel, the third pulley is transmission-connected to the fourth pulley via a second transmission belt, a motor protection cover is provided above the grinding motor, and a pulley protection cover is provided on the outer side of the second transmission belt.

[0015] Preferably, an adjusting screw is threadedly connected to the middle part of the second sliding block, and an end of the adjusting screw away from the second sliding block is fixedly connected to an adjusting handle, second guide rods are provided on both sides of the second sliding block, and the surface of the second guide rods is slidably connected to the second sliding block, a limiting plate is provided at the end of the adjusting screw away from the adjusting handle, a third motor is installed on the surface of the second sliding block, and the output end of the third motor is fixedly connected to the cleaning brush.

[0016] Preferably, both ends of the conveying roller are rotatably connected to the inner wall of the side plate, one end of the conveying roller extends to the outer side of the side plate and is fixedly connected to a transmission gear, the transmission gears are meshed with each other, a transmission rod is provided below the second sliding block on one side, both ends of the transmission rod are rotatably connected to the connecting block, the connecting block is fixedly connected to the surface of the side plate, a plurality of second bevel gears are provided in the middle of the transmission rod, a first bevel gear is meshed above the second bevel gear, the first bevel gear is provided on one side of the transmission gear and rotates synchronously with the transmission gear, a fourth motor is installed on the side of the connecting block away from the transmission rod, and the output end of the fourth motor is fixedly connected to the transmission rod.

[0017] Preferably, one side of the cleaning air knife is connected with an air suction pipe and an air blowing pipe, and two air suction ports are provided on the opposite side of the cleaning air knife. The air suction ports are connected with the air suction pipe through a cavity inside the cleaning air knife, and a air blowing port is provided between the two air suction ports, and the air blowing port is connected with the air blowing pipe through another cavity inside the cleaning air knife.

[0018] Preferably, the air supply component is internally provided with an air fan group for supplying air to the cleaning air knife, and the air fan group is internally installed with a plurality of blowing fans and dust suction fans, the air inlet ends of the plurality of blowing fans are commonly connected to a first air inlet duct, the other end of the first air inlet duct is connected to the outside and is provided with a filter, the air outlet ends of the plurality of blowing fans are commonly connected to a first air outlet duct, the first air outlet duct is respectively connected to the air blowing pipe on each cleaning air knife, the air inlet ends of the plurality of dust suction fans are commonly connected to a second air inlet duct, the second air inlet duct is respectively connected to the air suction pipe on each cleaning air knife, the air outlet ends of the plurality of dust suction fans are commonly connected to a second air outlet duct, and the second air outlet duct is connected to an external collecting device.

[0019] Preferably, the cleaning mechanism further comprises a dust cover, and the dust cover is arranged between the side panels.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting up multiple laser scanning components to scan the surface of the PCB board, the three-dimensional surface flatness data of the PCB board is obtained, and then the electric telescopic column at the corresponding position is controlled to adjust the extension distance according to the flatness of different positions, and the grinding depth of the grinding wheel is adjusted. Targeted zone grinding can be performed for the unevenness of different positions on the PCB surface, avoiding the situation where the entire board surface is ground at a uniform depth, resulting in excessive grinding of the protrusions and insufficient grinding of the depressions.

[0022] A combination of a cleaning brush and a cleaning air knife is used to clean the surface of the ground PCB board. The bristles of the brush are made of synthetic fiber hair, which is soft and not easy to scratch the PCB board. The brushes are independently driven by a motor and the speed of each brush can be adjusted individually. The height of the brush can be adjusted by turning the adjustment handle to correspond to products of different thicknesses. An air blowing port is provided in the middle of the cleaning air knife, and air suction ports are provided on both sides. The filtered air is inhaled from the outside through the air blowing fan, and a high-speed airflow is blown out through the air blowing port to separate the debris and dust on the surface of the PCB board. The air suction fan draws air from the air suction port to generate negative pressure to inhale the debris and dust, and the debris and dust are discharged and collected from the second air outlet after passing through the air suction pipe and the second air inlet duct. The cleaning efficiency is high while reducing the contact with the PCB board.

[0023] An ion wind rod is installed above the cleaning brush. The ion wind rod ionizes the air molecules and blows out a high-speed ion flow to increase the ion concentration in the surrounding air, thereby neutralizing the static charge on the surface of the cleaning brush and the PCB board, preventing debris and dust from being adsorbed on the surface of the cleaning brush and the board due to static electricity, resulting in incomplete cleaning. The cleaning effect is improved by setting up the ion wind rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the device body in the present invention;

[0026] Figure 3 It is a structural schematic diagram of another viewing angle of the device body in the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the cleaning mechanism in the present invention;

[0028] Figure 5 for Figure 3 A partial enlarged schematic diagram of point A in the middle

[0029] Figure 6 It is a schematic diagram of the structure of the grinding assembly in the present invention;

[0030] Figure 7 It is a schematic diagram of the internal structure of the grinding assembly in the present invention;

[0031] Figure 8 It is a front view cross-sectional structural schematic diagram of the device body in the present invention;

[0032] Fig. 9 It is a front view structural schematic diagram of the device body in the present invention;

[0033] Fig.10 for Fig. 9 A schematic diagram of the enlarged structure at B in the middle;

[0034] Fig.11 It is a schematic diagram of the structure of the cleaning air knife in the present invention;

[0035] Fig.12 Schematic diagram of wind direction of the air inlet and the air outlet in the present invention;

[0036] Fig.13 It is a cross-sectional structural schematic diagram of the cleaning air knife and the air supply assembly in the present invention;

[0037] Fig.14 It is a schematic diagram of the front cross-sectional structure of the air supply assembly in the present invention.

[0038] The numbers in the figure are:

[0039] 01. Equipment body; 02. Device body;

[0040] 1. Driving mechanism; 110. Driving roller; 111. Driving roller; 120. First sliding block; 121. Limiting pin; 122. Limiting nut; 123. Spring; 124. First guide rod; 130. First pulley; 140. First motor; 141. Second pulley; 150. Mounting plate; 151. Tensioning wheel; 160. First transmission belt;

[0041] 2. Grinding mechanism; 210. Top plate; 220. Grinding unit; 221. Grinding wheel; 222. Fixed bracket; 223. Electric telescopic column; 224. Motor protective cover; 225. Pulley protective cover; 226. Grinding motor; 227. Third pulley; 228. Fourth pulley; 229. Second transmission belt; 230. Bottom plate;

[0042] 3. Cleaning mechanism; 310. Cleaning brush; 311. Second sliding block; 312. Adjusting handle; 313. Adjusting screw; 314. Second guide rod; 315. Limiting plate; 316. Third motor; 320. Cleaning air knife; 321. Suction pipe; 322. Blowing pipe; 323. Suction port; 324. Blowing port; 330. Conveying roller; 331. Transmission gear; 332. First bevel gear; 333. Second bevel gear; 334. Transmission rod; 335. Connecting block; 336. Fourth motor; 340. Ion wind rod; 350. Air supply assembly; 351. Fan unit; 3511. Blowing fan; 3512. Dust suction fan; 352. First air inlet; 353. Second air inlet; 354. First air outlet; 355. Second air outlet; 360. Dust cover;

[0043] 4. Limiting mechanism; 410. Slide rail; 411. Limiting slider; 412. Screw rod; 413. Limiting rod; 414. Limiting roller; 415. Fifth motor;

[0044] 5. Measuring mechanism; 510. Fixing plate; 511. Laser scanning assembly;

[0045] 6. Side panels. DETAILED DESCRIPTION

[0046] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. As mentioned throughout the specification and claims, "including" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of implementing the present application, but the description is for the purpose of illustrating the general principles of the present application, and is not used to limit the scope of the present application. The scope of protection of the present application shall be determined by the definition of the attached claims.

[0047] like Figure 1 As shown, a PCB board suction type non-contact cleaning device includes an equipment body 01 and an equipment body 02, and the equipment body 02 is installed inside the equipment body 01.

[0048] like Figure 2As shown, the equipment body 01 includes a driving mechanism 1, a grinding mechanism 2, a cleaning mechanism 3, a limiting mechanism 4, a measuring mechanism 5 and a side plate 6. The driving mechanism 1 is provided with two groups and is installed inside the side plate 6. The grinding mechanism 2 is installed inside the side plate 6 and is located between the two groups of driving mechanisms 1. The cleaning mechanism 3 is provided on the right side of the grinding mechanism 2. The limiting mechanism 4 is installed on the left side of the driving mechanism 1. The measuring mechanism 5 is provided above the limiting mechanism 4.

[0049] like Figure 3 As shown, the driving mechanism 1 includes driving rollers 110 arranged in pairs, and a plurality of driving rollers 111 are fixedly connected to the surface of the driving rollers 110. Both ends of one driving roller 110 are rotatably connected to the first sliding block 120, and both ends of the other driving roller 110 are rotatably connected to the side plate 6. The PCB board to be ground is placed on the driving rollers 111, and the driving rollers 110 drive the driving rollers 111 to rotate, thereby driving the PCB board into the grinding mechanism 2.

[0050] Among them, the grinding mechanism 2 includes a top plate 210, a grinding unit 220 and a bottom plate 230. The two ends of the top plate 210 and the bottom plate 230 are fixedly connected to the upper end and the lower end of the side plate 6 respectively. The grinding units 220 are provided in multiple groups and are fixedly installed on the surfaces of the top plate 210 and the bottom plate 230 respectively. Each group of grinding units 220 is evenly spaced, and the spacing distance is the grinding width of a single grinding unit 220. The cooperation of multiple groups of grinding units 220 can cover the lateral area of ​​the entire PCB board surface.

[0051] Please refer to Figure 3 and 5 The measuring mechanism 5 includes a fixed plate 510 and a laser scanning assembly 511. Both ends of the fixed plate 510 are fixedly connected to the inner wall of the side plate 6. The laser scanning assembly 511 is installed on the lower surface of the fixed plate 510. A plurality of laser scanning assemblies 511 are arranged evenly. The laser scanning assembly 511 is electrically connected to the grinding unit 220. The laser scanning assembly 511 uses a laser to scan the surface of the PCB board, thereby obtaining three-dimensional data of the surface of the PCB board. The extension length of the electric telescopic column 223 at the corresponding position can be adjusted according to the distribution of the concave and convex positions on the surface of the PCB board, thereby adjusting the grinding depth of the grinding wheel 221, so as to avoid the situation where the entire board surface is ground to a uniform depth, resulting in excessive grinding of the protrusions and insufficient grinding of the concave parts.

[0052] The limiting mechanism 4 includes a slide rail 410 and a limiting slider 411. The two ends of the slide rail 410 are fixedly connected to the inner wall of the side plate 6. The limiting slider 411 is provided with two and both ends thereof are slidably connected to the slide rail 410. The middle part of the limiting slider 411 is threadedly connected with a screw rod 412. One end of the screw rod 412 is rotatably connected to the inner wall of the side plate 6. The other end of the screw rod 412 is rotatably connected to a fixed block provided in the middle part of the slide rail 410. A fifth motor 415 is installed on the surface of the side plate 6. The output end of the fifth motor 415 is connected to the screw rod 41 2, a limiting rod 413 is fixedly connected to the upper side of the limiting slider 411, and the surface of the limiting rod 413 is rotatably connected to the limiting roller 414. The fifth motor 415 is started when the PCB board reaches the limiting slider 411, and drives the screw rod 412 to rotate so that the two limiting sliders 411 are close to the PCB board along the slide rail 410, so that the limiting roller 414 abuts against the side of the PCB board to align and limit the position of the PCB board, so that the PVB board is in the correct position when entering the interior of the grinding mechanism 2, which is beneficial to the accuracy of grinding.

[0053] Please refer to Figure 6-7 The grinding unit 220 includes a grinding wheel 221, a fixed bracket 222 and an electric telescopic column 223. The two ends of the grinding wheel 221 are rotatably connected to the lower part of the fixed bracket 222. The upper end of the fixed bracket 222 is fixedly connected to the output end of the electric telescopic column 223. The electric telescopic column 223 is fixedly installed on the surface of the top plate 210 and the bottom plate 230. A grinding motor 226 is installed on one side of the fixed bracket 222. A motor protective cover 224 is arranged above the grinding motor 226. The motor protective cover 224 can protect the internal grinding motor 226 to prevent metal debris generated by grinding from entering the motor and causing damage to it. The output end of the internal grinding motor 226 is fixedly connected to the third pulley 227, and a fourth pulley 228 is provided below the third pulley 227. The fourth pulley 228 is fixedly connected to a side shaft of the grinding wheel 221. The third pulley 227 is connected to the fourth pulley 228 through a second transmission belt 229. The grinding motor 226 drives the grinding wheel 221 to rotate for grinding through the third pulley 227, the fourth pulley 228 and the second transmission belt 229. A pulley guard 225 is provided on the outside of the second transmission belt 229 to protect the internal pulley and transmission belt.

[0054] like Figure 4 and 8As shown, the cleaning mechanism 3 includes a cleaning brush 310, a cleaning air knife 320, a conveying roller 330, an ion wind rod 340 and an air supply assembly 350. The cleaning brush 310 is provided with multiple groups and both ends thereof are rotatably connected to the second sliding block 311. The second sliding block 311 is arranged inside the side plate 6. A group of cleaning brushes 310 is provided with two and they are matched up and down. The bristles of the cleaning brush 310 are synthetic fiber bristles with a soft texture, which can effectively avoid scratching the PCB board during the cleaning process and have a better cleaning effect on uneven areas. The cleaning air knife 320 is provided with multiple The cleaning wind blades 320 are arranged in groups and are located on the right side of the cleaning brush 310. Each group of cleaning wind blades 320 is arranged opposite to each other. The conveying rollers 330 are arranged in multiple groups and are located on the right side of the cleaning brush 310. The ion wind rod 340 is installed above the cleaning brush 310. The air supply assembly 350 is arranged below the cleaning wind blade 320. The ion wind rod 340 increases the ion concentration in the surrounding air by blowing out a high-speed ion flow, thereby neutralizing the static charge on the surface of the cleaning brush 310 and the PCB board, and avoiding debris and dust from being adsorbed on the surface of the cleaning brush 310 and the PCB board due to static electricity, resulting in incomplete cleaning.

[0055] like Figure 9-10 As shown, an adjusting screw 313 is threadedly connected to the middle part of the second sliding block 311, and an adjusting handle 312 is fixedly connected to the end of the adjusting screw 313 away from the second sliding block 311. Second guide rods 314 are arranged on both sides of the second sliding block 311, and the surface of the second guide rods 314 is slidably connected to the second sliding block 311. A limiting plate 315 is arranged on the end of the adjusting screw 313 away from the adjusting handle 312. By rotating the adjusting handle 312 to drive the second sliding block 311 to move along the second guide rod 314, the height between the cleaning brush 310 and the PCB board can be adjusted, and then the cleaning force can be adjusted. A third motor 316 is installed on the surface of the second sliding block 311, and the output end of the third motor 316 is fixedly connected to the cleaning brush 310. Each cleaning brush 310 is driven separately by the third motor 316, and the rotation speed of each cleaning brush 310 can be controlled separately to perform cleaning to different degrees.

[0056] Each group of conveying rollers 330 is provided with two, and both ends of the conveying rollers 330 are rotatably connected to the inner wall of the side plate 6, one end of the conveying roller 330 extends to the outer side of the side plate 6 and is fixedly connected to a transmission gear 331, the transmission gears 331 are meshed with each other, and the two conveying rollers 330 rotate towards each other, driving the PCB board therebetween to move, and a transmission rod 334 is provided below the second sliding block 311 on one side, and both ends of the transmission rod 334 are rotatably connected to the connecting block 335, and the connecting block 335 is fixedly connected to the surface of the side plate 6, and the middle part of the transmission rod 334 is provided There are a plurality of second bevel gears 333, and a first bevel gear 332 is meshed above the second bevel gear 333. The first bevel gear 332 is arranged on one side of the transmission gear 331 and rotates synchronously therewith. A fourth motor 336 is installed on the side of a connecting block 335 away from the transmission rod 334. The output end of the fourth motor 336 is fixedly connected to the transmission rod 334. The fourth motor 336 drives the second bevel gears 333 to rotate and then drives the first bevel gears 332 to move. The first bevel gear 332 drives the transmission gear 331 to rotate and then drives the conveying roller 330 to rotate towards each other.

[0057] In this embodiment, the driving mechanism 1 includes a driving roller 110 and a driving roller 111. Two driving rollers 110 are provided and a plurality of driving rollers 111 are fixedly connected to the surface thereof. Both ends of the upper driving roller 110 are rotatably connected to the first sliding block 120. Both ends of the lower driving roller 110 are rotatably connected to the side plate 6. The first sliding block 120 is provided inside the side plate 6 and its upper end is fixedly connected to the limiting pin 121. The upper end of the limiting pin 121 penetrates the side plate 6 and its peripheral side is threadedly connected to the limiting nut 121. 2. The rotation of the limit nut 122 can drive the first sliding block 120 to move up and down, and adjust the distance between the driving roller 111 and the PCB board to adapt to PCB boards of different thicknesses. The surface of the limit pin 121 is sleeved with a spring 123, and the spring 123 is arranged between the first sliding block 120 and the side plate 6. The spring 123 squeezes the first sliding block 120, provides downward pressure for the first sliding block 120, and squeezes the PCB board therein. The first guide rods 124 are slidably connected on both sides of the first sliding block 120. The outer wall of one side side plate 6 is installed with a first motor 140 through a mounting seat. The output end of the first motor 140 is fixedly connected with a second pulley 141. The end of the driving roller 110 close to the first motor 140 extends to the outer side of the side plate 6 and is fixedly connected with the first pulley 130. The first pulley 130 and the second pulley 141 are connected through the first transmission belt 160 sleeved on their surfaces. The first motor 140 drives the lower driving roller 110 to rotate through the transmission belt and the pulley. When the PCB board enters the two driving rollers, the first motor 140 drives the lower driving roller 110 to rotate. When the first driving belt 160 is moved between the movable rollers 111, the PCB board is driven to move into the grinding mechanism 2 on the right side for grinding. A mounting plate 150 is arranged above the second pulley 141. The mounting plate 150 is fixedly connected to the surface of the side plate 6. A through hole is opened in the middle of the mounting plate 150 and a tensioning wheel 151 is arranged therein. The surface of the tensioning wheel 151 is in contact with the first transmission belt 160. The position of the tensioning wheel 151 can be adjusted up and down to squeeze and tension the first transmission belt 160 to prevent the first transmission belt 160 from slipping during operation.

[0058] like Figure 11-12 As shown, one side of the cleaning air knife 320 is connected with an air suction pipe 321 and an air blowing pipe 322. The cleaning air knives 320 are arranged opposite to each other and two air suction ports 323 are provided on the opposite sides thereof. The air suction ports 323 are connected with the air suction pipe 321 through the cavity inside the cleaning air knife 320. A air blowing port 324 is provided in the middle of the two air suction ports 323. The air blowing port 324 is connected with the air blowing pipe 322 through another cavity inside the cleaning air knife 320. The air blowing port 324 blows out a high-speed airflow to blow up the debris on the surface of the PCB board. The air suction ports 323 on both sides suck in the debris by generating negative pressure, and absorb the debris through the air suction pipe 321.

[0059] In this embodiment, the cleaning mechanism 3 also includes a dust cover 360, which is arranged between the side panels 6. The dust cover 360 is used to prevent debris and dust from floating out and polluting the surrounding environment during the cleaning process. A feed port and a discharge port are arranged on both sides of the dust cover 360, and through holes corresponding to the cleaning brush 310, the cleaning air knife 320 and the conveying roller 330 are opened on both sides close to the side panels 6.

[0060] Please refer to Fig.13 and 14 The suction pipe 321 and the blowing pipe 322 are respectively connected to the air supply component 350, and a fan unit 351 for supplying air to the cleaning air knife 320 is arranged inside the air supply component 350. A plurality of blowing fans 3511 and a dust collecting fan 3512 are installed inside the fan unit 351. The air inlet ends of the plurality of blowing fans 3511 are commonly connected to a first air inlet duct 352. The other end of the first air inlet duct 352 is connected to the outside and is provided with a filter. The air outlet ends of the plurality of blowing fans 3511 are commonly connected to a first air outlet duct 354. The first air outlet duct 354 is respectively connected to the blowing pipe 322 on each cleaning air knife 320. The blowing fans 3511 inhale the filtered air from the outside. The air is blown out from the blowing port 324 through the first air outlet 354 and the blowing pipe 322 to blow up the debris and dust on the surface of the PCB board; the air inlet ends of the multiple dust suction fans 3512 are commonly connected to the second air inlet 353, and the second air inlet 353 is respectively connected to the suction pipe 321 on each cleaning air knife 320; the air outlet ends of the multiple dust suction fans 3512 are commonly connected to the second air outlet 355, and the second air outlet 355 is connected to an external collection device; the dust suction fan 3512 sucks air from the suction port 323 through the second air inlet 353 and the suction pipe 321 to generate negative pressure to suck in the blown debris and dust, and discharge and collect them through the second air outlet 355.

[0061] The principle of the present invention is as follows: the PCB board enters the device through the measuring mechanism 5, and the laser scanning component 511 scans the upper and lower surfaces of the PCB board to obtain the three-dimensional flatness data of the surface of the PCB board. When the PCB board enters the limiting mechanism 4, the fifth motor 415 starts to drive the two limiting sliders 411 to approach each other and make the limiting roller 414 abut the edge of the PCB board to align and limit the PCB board. Then the first motor 140 starts to drive the driving roller 111 to rotate through the transmission of the first pulley 130, the second pulley 141 and the first transmission belt 160 to send the PCB board to the grinding mechanism 2. The electric telescopic columns 223 at different positions adjust the extension length according to the board height data fed back by the laser scanning component 511 to control the grinding depth of the grinding wheel 221. The corresponding grinding depth is used for the protrusions and depressions on the board surface to avoid uneven grinding. The ground PCB board enters the cleaning mechanism 3 from the feed port, and the third motor 316 drives the cleaning brush 310 to rotate, and the second sliding block 31 can be driven by turning the adjustment handle 312 The height of the cleaning brush 310 is adjusted by moving it up and down to adjust the cleaning strength. The cleaning air knife 320 on the right side is blown out by the air blower 3511 through the air outlet 324 to blow up the debris on the surface of the PCB board. The dust suction fan 3512 generates negative pressure through the air inlets 323 on both sides to suck in the blown debris, and discharges the debris to the external collection device through the air inlet 321 and the second air outlet 355. The ion wind rod 340 above the cleaning brush 310 blows out a high-speed ion flow to neutralize the surface of the PCB board and the cleaning brush. The electrostatic charge of 310 can reduce the phenomenon of electrostatic adsorption, and debris is not easily adsorbed on the surface of the PCB board and the cleaning brush 310, so the debris can be cleaned more thoroughly. The debris and dust are cleaned by multiple cleaning brushes 310 and cleaning air knives 320, and the PCB board that has been ground and cleaned is discharged from the discharge port. The surface of the ground PCB board is cleaned by the combination of the cleaning brush 310 and the cleaning air knife 320, which reduces the contact with the PCB board during the cleaning process, avoids damage to it, and improves the cleaning efficiency.

[0062] Finally, it should be noted that when describing the position of each component and the matching relationship between them, the present invention usually takes one / a pair of components as an example. However, those skilled in the art should understand that such position, matching relationship, etc. are also applicable to other components / other pairs of components.

[0063] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A PCB board suction type non-contact cleaning device, characterized in that: It comprises a device body (01) and a device body (02), wherein the device body (02) is installed inside the device body (01); The device body (01) comprises a driving mechanism (1), a grinding mechanism (2), a cleaning mechanism (3), a limiting mechanism (4), a measuring mechanism (5) and a side plate (6); the driving mechanism (1) is provided in two groups and is installed inside the side plate (6); the grinding mechanism (2) is installed inside the side plate (6) and is located between the two groups of driving mechanisms (1); the cleaning mechanism (3) is provided on the right side of the grinding mechanism (2); the limiting mechanism (4) is installed on the left side of the driving mechanism (1); and the measuring mechanism (5) is provided above the limiting mechanism (4); The driving mechanism (1) comprises driving rollers (110) arranged in pairs, a plurality of driving rollers (111) being mounted on the surface of the driving rollers (110), both ends of one driving roller (110) being rotatably connected to the first sliding block (120), and both ends of the other driving roller (110) being rotatably connected to the side plate (6); The grinding mechanism (2) comprises a top plate (210), a grinding unit (220) and a bottom plate (230); the two ends of the top plate (210) and the bottom plate (230) are respectively fixedly connected to the upper end and the lower end of the side plate (6); the grinding unit (220) is provided in a plurality of groups and is respectively fixedly mounted on the surface of the top plate (210) and the bottom plate (230); The cleaning mechanism (3) comprises a cleaning brush (310), a cleaning air knife (320), a conveying roller (330), an ion wind rod (340) and an air supply assembly (350); the cleaning brush (310) is provided in multiple groups and both ends thereof are rotatably connected to a second sliding block (311); the second sliding block (311) is arranged inside the side plate (6); the cleaning air knife (320) is provided in multiple groups and is located on the right side of the cleaning brush (310); each group of the cleaning air knife (320) is arranged facing each other; the conveying roller (330) is provided in multiple groups and is located on the right side of the cleaning brush (310); the ion wind rod (340) is installed above the cleaning brush (310); and the air supply assembly (350) is arranged below the cleaning air knife (320); The limiting mechanism (4) comprises a slide rail (410) and a limiting slider (411), the two ends of the slide rail (410) being fixedly connected to the inner wall of the side plate (6), two limiting sliders (411) being provided and both ends of which are slidably connected to the slide rail (410), a screw rod (412) being threadedly connected to the middle of the limiting slider (411), one end of the screw rod (412) being rotatably connected to the inner wall of the side plate (6), and the other end of the screw rod (412) being rotatably connected to a fixed block provided in the middle of the slide rail (410), a fifth motor (415) being installed on the surface of the side plate (6), an output end of the fifth motor (415) being fixedly connected to the screw rod (412), a limiting rod (413) being fixedly connected to the upper part of the limiting slider (411), and a surface of the limiting rod (413) being rotatably connected to a limiting roller (414).

2. A PCB board suction type non-contact cleaning device according to claim 1, characterized in that: The first sliding block (120) is arranged inside the side plate (6) and its upper end is fixedly connected to a limit pin (121); the upper end of the limit pin (121) passes through the side plate (6) and its circumferential side is threadedly connected to a limit nut (122); a spring (123) is sleeved on the surface of the limit pin (121); the spring (123) is arranged between the first sliding block (120) and the side plate (6); first guide rods (124) are slidably connected to the two sides of the first sliding block (120); a first motor (140) is installed on the outer wall of one side of the side plate (6) through a mounting seat; the output end of the first motor (140) is fixedly connected to a second motor (124); A pulley (141), one end of the driving roller (110) close to the first motor (140) extends to the outside of the side plate (6) and is fixedly connected to the first pulley (130), the first pulley (130) and the second pulley (141) are connected in transmission via a first transmission belt (160) sleeved on the surface of the first pulley (130), a mounting plate (150) is arranged above the second pulley (141), the mounting plate (150) is fixedly connected to the surface of the side plate (6), a through hole is opened in the middle of the mounting plate (150) and a tensioning wheel (151) is arranged therein, and the surface of the tensioning wheel (151) is in contact with the first transmission belt (160).

3. The PCB board suction type non-contact cleaning device according to claim 1, characterized in that: The measuring mechanism (5) comprises a fixed plate (510) and a laser scanning assembly (511), wherein two ends of the fixed plate (510) are fixedly connected to the inner wall of the side plate (6), the laser scanning assembly (511) is mounted on the lower surface of the fixed plate (510), and the laser scanning assembly (511) is electrically connected to the grinding unit (220).

4. The PCB board suction type non-contact cleaning device according to claim 1, characterized in that: The grinding unit (220) comprises a grinding wheel (221), a fixed bracket (222) and an electric telescopic column (223); two ends of the grinding wheel (221) are rotatably connected to the lower part of the fixed bracket (222); the upper end of the fixed bracket (222) is fixedly connected to the output end of the electric telescopic column (223); a grinding motor (226) is installed on one side of the fixed bracket (222); the output end of the grinding motor (226) is fixedly connected to a third belt pulley (227); a fourth belt pulley (228) is provided below the third belt pulley (227); the fourth belt pulley (228) is fixedly connected to a rotating shaft on one side of the grinding wheel (221); the third belt pulley (227) is transmission-connected to the fourth belt pulley (228) via a second transmission belt (229); a motor protection cover (224) is provided above the grinding motor (226); and a belt pulley protection cover (225) is provided on the outer side of the second transmission belt (229).

5. The PCB board suction type non-contact cleaning device according to claim 1, characterized in that: An adjusting screw (313) is threadedly connected to the middle part of the second sliding block (311); an end of the adjusting screw (313) away from the second sliding block (311) is fixedly connected to an adjusting handle (312); second guide rods (314) are arranged on both sides of the second sliding block (311); the surface of the second guide rod (314) is slidably connected to the second sliding block (311); a limiting plate (315) is arranged on the end of the adjusting screw (313) away from the adjusting handle (312); a third motor (316) is installed on the surface of the second sliding block (311); and an output end of the third motor (316) is fixedly connected to the cleaning brush (310).

6. The PCB board suction type non-contact cleaning device according to claim 1, characterized in that: The two ends of the conveying roller (330) are rotatably connected to the inner wall of the side plate (6); one end of the conveying roller (330) extends to the outer side of the side plate (6) and is fixedly connected to a transmission gear (331); the transmission gears (331) are meshed with each other; a transmission rod (334) is provided below the second sliding block (311) on one side; both ends of the transmission rod (334) are rotatably connected to a connecting block (335); the connecting block (335) is fixedly connected to the surface of the side plate (6); a plurality of second bevel gears (333) are provided in the middle of the transmission rod (334); a first bevel gear (332) is meshed above the second bevel gear (333); the first bevel gear (332) is provided on one side of the transmission gear (331) and rotates synchronously therewith; a fourth motor (336) is installed on a side of the connecting block (335) away from the transmission rod (334); an output end of the fourth motor (336) is fixedly connected to the transmission rod (334).

7. The PCB board suction type non-contact cleaning device according to claim 1, characterized in that: One side of the cleaning air knife (320) is connected to an air suction pipe (321) and an air blowing pipe (322); two air suction ports (323) are provided on the opposite side of the cleaning air knife (320); the air suction ports (323) are connected to the air suction pipe (321) via a cavity inside the cleaning air knife (320); a air blowing port (324) is provided between the two air suction ports (323); the air blowing port (324) is connected to the air blowing pipe (322) via another cavity inside the cleaning air knife (320).

8. The PCB board suction type non-contact cleaning device according to claim 1, characterized in that: The air supply component (350) is internally provided with a fan group (351) for supplying air to the cleaning air knife (320); a plurality of air blowing fans (3511) and dust collecting fans (3512) are installed internally of the fan group (351); the air inlet ends of the plurality of air blowing fans (3511) are commonly connected to a first air inlet duct (352); the other end of the first air inlet duct (352) is connected to the outside and is provided with a filter; the air outlet ends of the plurality of air blowing fans (3511) are commonly connected to a first air outlet duct (352); 54), the first air outlet duct (354) is respectively connected to the air blowing pipe (322) on each cleaning air knife (320), the air inlet ends of the multiple dust suction fans (3512) are commonly connected to the second air inlet duct (353), the second air inlet duct (353) is respectively connected to the air suction pipe (321) on each cleaning air knife (320), the air outlet ends of the multiple dust suction fans (3512) are commonly connected to the second air outlet duct (355), and the second air outlet duct (355) is connected to an external collection device.

9. The PCB board suction type non-contact cleaning device according to claim 1, characterized in that: The cleaning mechanism (3) further comprises a dust cover (360), wherein the dust cover (360) is arranged between the side plates (6).

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