Explosion-proof automobile paint repair dry grinding device and dry grinding method

Abstract

The present invention relates to the technical field of automobile repair and polishing equipment, and specifically to an explosion-proof automobile paint repair dry polishing device and dry polishing method. The device comprises a processing box, a polishing machine, a polishing sheet and an exhaust pipe, and the processing box is provided with a sealed door. The device can adsorb the dust generated by dry polishing through a filtering and collecting mechanism, and then adsorb the dust through an electrostatic roller. At the same time, the electrostatic roller can be moved laterally and up and down by a driving motor and an electric push rod, thereby adsorbing dust at different positions and heights. When the adsorption is good, the dust on the surface of the electrostatic roller can be swept by an output motor and a brush roller. At the same time, the water pump can be started to spray water mist with multiple spray nozzles, thereby reducing the resin dust and placing it in a collection box, thereby classifying and storing the dust, which is convenient for the later collection of metal dust for recycling.

Description

Technical Field

[0001] The invention relates to the technical field of automobile repair and grinding equipment, and in particular to an explosion-proof automobile paint surface repair dry grinding device and a dry grinding method. Background Art

[0002] In order to protect the car body and make it have a good gloss for a long time and not be corroded, the surface of the car body will be coated with car paint, which not only has a good protective effect, but also can improve the appearance of the car. When the car encounters a certain intensity of scratches, the paint layer on the surface of the car will be scraped off, leaving white marks. In severe cases, the metal layer of the car body will even be exposed. At this time, repairs need to be carried out after the original paint surface is polished before spraying new paint.

[0003] In the prior art, automobile paint repair generally uses dry grinding and wet grinding methods. The dry grinding method directly uses a grinding disc and dry sandpaper (the back of the sandpaper has dust suction holes) for grinding. For example, Chinese invention patent application CN118752367A discloses a handheld convenient sander for automobile repair, which uses a sander and a sanding disc to grind the automobile paint surface. At the same time, it is equipped with an exhaust pipe. When in use, through an external impurity suction device, dust can be collected while grinding. This not only prevents dust from spreading in the working environment, but also centrally treats dust, solving the dust pollution problem to a certain extent.

[0004] However, in actual operation, the dust adsorbed during the dry grinding process has complex components, mainly including resin dust, pigment dust and metal dust. The current method of handling dust generated by dry grinding is relatively extensive, and it is only simply collected and then dumped directly. Different types of dust cannot be classified and stored, which can easily affect the recovery efficiency of metal resources and easily affect the environment. Summary of the Invention

[0005] Based on this, it is necessary to provide an explosion-proof automobile paint surface repair dry grinding device and dry grinding method in response to the existing technical problems.

[0006] To solve the existing technical problems, the present invention adopts the following technical solutions: an explosion-proof automobile paint repair dry grinding device, comprising a processing box, a grinder, a grinding disc and an exhaust pipe, the processing box is fixed with a sealed door, the processing box is provided with a filtering and collecting mechanism adapted to the exhaust pipe, and the processing box is provided with a classification mechanism;

[0007] The classification mechanism includes a movable frame and two brush rollers arranged in the processing box, an electrostatic roller is installed on the movable frame, an adjustment component adapted to the movable frame is provided on the processing box, a U-shaped tube is slidably installed on the processing box, a plurality of spray nozzles are provided on the U-shaped tube, a water pump is installed on the side of the processing box, a connecting pipe is installed jointly between the outlet end of the water pump and the water inlet end of the U-shaped tube, a driving component for moving the U-shaped tube and moving and rotating the two brush rollers is provided on the processing box, and an isolation and sealing component is provided on the processing box.

[0008] Furthermore, the adjustment assembly includes a driving motor installed on the side of the processing box, a movable groove is opened on the inner wall of the processing box, a threaded rod is rotatably installed in the movable groove, one end of the threaded rod extends to the outside of the processing box and is connected to the output shaft of the driving motor, a threaded block is threadedly sleeved on the threaded rod, a moving box is installed on the side of the threaded block, an electric push rod is installed in the moving box, and the moving frame is installed on the movable end of the electric push rod, a first corrugated dust cover is installed on both sides of the threaded block, and two of the first corrugated dust covers are respectively sleeved on the outside of the threaded rod on both sides of the threaded block, and a second corrugated dust cover is installed between the moving box and the moving frame.

[0009] Furthermore, the driving assembly includes an output motor installed on the side of the processing box, a movable groove is provided on the inner wall of the side of the processing box, a rotating rod is rotatably installed in the movable groove, one end of the rotating rod extends to the outside of the processing box and is connected to the output shaft of the output motor, and a square rod is installed on the other end of the rotating rod, two movable hollow blocks are movably provided in the movable groove, movable holes are provided on the sides of the two movable hollow blocks, and movable columns are rotatably installed on the two movable holes, and rectangular holes adapted to the square rods are provided on the ends of the two movable columns, and the first bevel gear is sleeved on the two movable columns, and the sides of the two movable hollow blocks are rotatably installed There is a moving rod, and the two brush rollers are respectively installed on the end parts of the two moving rods, and the other ends of the two moving rods extend into the two movable hollow blocks and are respectively installed with second bevel gears, and the two first bevel gears are respectively meshed with the two second bevel gears. An elastic extrusion unit that enables the two movable hollow blocks to move is provided on the processing box, and the elastic extrusion unit is installed in cooperation with the moving frame. A fixed box is installed on the side of the processing box, and a reciprocating screw is rotatably installed in the fixed box. An L-shaped plate is threaded on the reciprocating screw, and the U-shaped tube is installed on the top of the L-shaped plate. The reciprocating screw is installed in cooperation with the rotating rod through a transmission unit.

[0010] Furthermore, the elastic extrusion unit includes trapezoidal plates respectively installed on the sides of the two movable hollow blocks, the other sides of the two movable hollow blocks are installed with tension springs and baffles, the other ends of the two tension springs are respectively installed on the two end side walls of the movable groove, two extrusion blocks are installed on the side of the movable frame, and the bottoms of the two extrusion blocks are movably installed with balls.

[0011] Furthermore, the transmission unit includes a transmission cavity opened on the processing box, a third bevel gear is sleeved on the rotating rod, one end of the reciprocating screw extends into the transmission cavity and is installed with a fourth bevel gear, and the third bevel gear and the fourth bevel gear are meshed.

[0012] Furthermore, the isolation and sealing assembly includes two trapezoidal blocks and two L-shaped blocks installed on the inner wall of the side of the processing box, one of the trapezoidal blocks is provided with a placement groove on the side, a fixed electric push rod is installed in the placement groove, and a sealing plate is installed on the movable end of the fixed electric push rod, and two slide grooves are provided at the bottom of the other trapezoidal block, both of which are installed in the two slide grooves, and both of the slide rods are slidably sleeved with sliders, and both sides of the two sliders are installed with return springs, and the other ends of the two return springs are respectively installed on the inner walls of the sides of the two slide grooves, and the bottoms of the two sliders are jointly installed with L-shaped partitions, and the bottom of the L-shaped partitions are abutted against one of the L-shaped blocks, and the sealing plate and the sides of the L-shaped partitions are both provided with sealing gaskets, and the top of the movable frame is installed with an elastic spacer.

[0013] Furthermore, a fixed hollow block is installed on the inner side wall of the processing box, a movable rod is installed on the inner rotation of the fixed hollow block, the other end of the movable rod extends to the outside of the fixed hollow block and is installed with a fixed plate, a torsion spring is installed between the movable rod and the fixed hollow block, a movable plate is installed at the bottom of the movable frame, a vibration plate is installed on the inner side wall of the processing box, and a knocking block is installed on the top of the vibration plate.

[0014] Furthermore, an exhaust port is fixedly provided on the side of the processing box, an isolation net is fixedly provided on the exhaust port, and two air supply pipes are fixedly provided on the other side of the processing box.

[0015] Furthermore, the filtering and collecting mechanism includes a pulse cleaner and an exhaust fan respectively installed on the processing box, the other end of the exhaust pipe is installed on the inlet end of the exhaust fan, and the air inlet and outlet pipe are respectively fixed on the opposite sides of the processing box, the inner wall of the processing box is installed with a frame, and the side of the frame is provided with a mounting port, the outlet end of the exhaust fan, the air inlet and the mounting port are jointly installed with a transmission pipe, a plurality of filter bags are fixed on the frame, and the side of the processing box is provided with a sliding hole, and a collection box is slidably installed on the sliding hole.

[0016] A dry grinding method for the above-mentioned explosion-proof automobile paint repair dry grinding device comprises the following steps:

[0017] S. Use a sander to adhere to the paint surface that needs to be repaired on the car and perform sanding operations;

[0018] S. The filter mechanism filters and collects the dust;

[0019] S. The classification mechanism divides the dust into metal dust and vertical dust.

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

[0021] First: This device can adsorb the dust generated by dry grinding and move the dust to the lower part of the processing box by setting a filtering and collecting mechanism, and then the resin dust can be adsorbed by the electrostatic roller. At the same time, the electrostatic roller can be moved horizontally and up and down by the driving motor and the electric push rod, thereby adsorbing the dust at different positions and heights. When the adsorption is completed, the dust on the surface of the electrostatic roller can be swept by the output motor and the brush roller. At the same time, the water pump can be started to spray water mist with multiple spray nozzles, thereby reducing the resin dust and placing it in the collection box, so that the dust can be classified and stored, which is convenient for the later collection of metal dust for recycling.

[0022] Secondly: Through the setting of the reciprocating screw, this device can move the U-shaped tube back and forth while the output motor is outputting. The back and forth movement of the U-shaped tube will cause the spray nozzle to move back and forth, and then spray multiple positions under the two L-shaped blocks, so as to evenly reduce dust and effectively avoid cleaning blind spots. Through the setting of the movable hollow block, extrusion plate, trapezoidal plate and tension spring, the electrostatic roller can be moved down for cleaning while the two brush rollers are close to each other. In this process, the bristles are tightly attached to the surface of the electrostatic roller and produce moderate deformation, forming flexible pressure contact, thereby ensuring that the bristles are in full contact with the surface of the electrostatic roller and improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0024] Figure 2 is a schematic diagram of the three-dimensional structure of the present invention from a second viewing angle;

[0025] Figure 3 It is a partially cutaway perspective structural diagram of the processing box and the sealing door of the present invention;

[0026] Figure 4 yes Figure 3 A magnified view of the structure at center A;

[0027] Figure 5 It is a partially cutaway schematic diagram of the three-dimensional structure of the processing box, trapezoidal block and L-shaped block of the present invention;

[0028] Figure 6 It is a partially cutaway schematic diagram of the three-dimensional structure of the processing box of the present invention;

[0029] Figure 7 yes Figure 6 A magnified view of the structure at point B in the middle;

[0030] Figure 8 It is a partially cutaway and enlarged schematic diagram of the three-dimensional structure of the processing box and the movable hollow block of the present invention;

[0031] Figure 9 It is a partially cutaway three-dimensional structural schematic diagram of the fixed hollow block of the present invention.

[0032] The numbers in the figure are: 1, treatment box; 2, grinder; 3, exhaust pipe; 4, pulse dust collector; 5, exhaust pipe; 6, drive motor; 7, output motor; 8, fixed box; 9, L-shaped plate; 10, U-shaped pipe; 11, water pump; 12, air supply pipe; 13, exhaust fan; 14, frame; 15, filter bag; 16, trapezoidal block; 17, fixed electric push rod; 18, blocking plate; 19, slider; 20, return spring; 21, L-shaped partition; 22, L-shaped block; 23, vibration plate; 24, threaded rod; 25, threaded block; 26, moving box; 27, electric push rod; 28, moving frame; 29, electrostatic roller; 30, Rotating rod; 31. Square rod; 32. Movable hollow block; 33. Movable column; 34. First bevel gear; 35. Moving rod; 36. Second bevel gear; 37. Brush roller; 38. Trapezoidal plate; 39. Extrusion block; 40. Tension spring; 41. Baffle; 42. Reciprocating screw rod; 43. Third bevel gear; 44. Fourth bevel gear; 45. Fixed hollow block; 46. Movable rod; 47. Torsion spring; 48. Fixed plate; 49. Movable plate; 50. First corrugated dust cover; 51. Second corrugated dust cover; 52. Collecting box; 53. Slide groove; 54. Movable groove; 55. Movable groove; 56. Elastic spacer; 57. Knocking block. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Figures 1-9 The best embodiment of the present invention is shown below in conjunction with the attached Figures 1-9 The present invention is further described.

[0035] Refer to the attached Figures 1-9, an explosion-proof automobile paint repair dry grinding device, comprising a processing box 1, a grinder 2, a grinding sheet and an exhaust pipe 3. It should be noted that, in this embodiment, the installation method and use method of the processing box 1, the grinder 2, the grinding sheet and the exhaust pipe 3 are all existing technologies, and the technical solution adopted in a handheld convenient grinder for automobile repair disclosed in the invention patent application CN118752367A can be directly adopted, which will not be repeated here. A sealing door is fixed on the processing box 1, a filtering and collecting mechanism compatible with the exhaust pipe 3 is provided on the processing box 1, and a classification mechanism is provided on the processing box 1.

[0036] The classification mechanism includes a moving frame 28 and two brush rollers 37 arranged in the processing box 1. An electrostatic roller 29 is installed on the moving frame 28. Specifically, the electrostatic roller 29 can adopt the electrostatic roller in the electrostatic screening copper powder equipment disclosed in the utility model patent CN219985026U. When in use, the electrostatic roller 29 can adsorb dust, which belongs to the existing technology and will not be described in detail here. The processing box 1 is provided with an adjustment component compatible with the moving frame 28. Two moving holes are opened on the side of the processing box 1. A U-shaped tube 10 is slidably installed on the two moving holes. The two vertical parts of the U-shaped tube 10 slide through the moving holes on the corresponding sides and extend into the processing box 1. A plurality of spray nozzles are provided on the U-shaped tube 10. A water pump 11 is installed on the side of the processing box 1. The outlet end of the water pump 11 is connected to the water inlet end of the U-shaped tube 10 through a connecting pipe. The processing box 1 is provided with a driving component that moves the U-shaped tube 10. The driving component The component also causes the two brush rollers 37 to move while rotating around their own axis. An isolation and sealing component is provided on the processing box 1. During the operation of the electrostatic roller 29, aluminum and copper dust and resin dust show completely different adsorption and desorption behaviors due to the difference in conductivity. When the electrostatic roller 29 is energized, it will adsorb metal powders such as aluminum and copper and non-metallic powders such as resin. When the electrostatic roller 29 is de-energized, non-metallic powders such as aluminum and copper will quickly detach from the electrostatic roller 29, while non-metallic powders such as resin will continue to be adsorbed on the electrostatic roller 29. Its principle is the same as that of an electrostatic screening copper powder equipment disclosed in the utility model patent CN219985026U.

[0037] With the above structure, when in use, the staff holds the grinder 2 in hand and starts the pneumatic motor on the grinder 2. The pneumatic motor will make the grinding disc rotate, and then make the grinding disc close to and fit the paint surface that needs to be repaired on the car, so as to perform the grinding operation. At the same time, during grinding, the dust generated by dry grinding can be adsorbed and filtered through the filtering and collecting mechanism, and then placed in the middle and lower part of the processing box 1, and isolated by the isolation and blocking component. After isolation, the dust is adsorbed by the electrostatic roller 29. After adsorption for a period of time, the electrostatic roller 29 stops working. At this time, the aluminum and copper dusts are quickly discharged and fall down. The resin dust is difficult to complete the charge discharge due to its extremely weak conductivity, and is still firmly adsorbed on the surface of the electrostatic roller 29. Then, the electrostatic roller 29 is adjusted by adjusting the component. When the brush roller 37 is in contact with the surface of the electrostatic roller 29, the driving assembly can rotate the brush roller 37 to sweep away the dust on the surface of the electrostatic roller 29. Then the water pump 11 uses the connecting pipe and the U-shaped pipe 10 to make multiple spray nozzles spray water mist. The water mist will reduce the flying dust and clean the dust on the brush roller 37, thereby reducing the resin dust and placing it in the collection box 52, so that the dust can be classified and stored, which is convenient for the later collection of metal dust for recycling.

[0038] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the adjustment component includes a drive motor 6 installed on the side of the processing box 1, a moving groove 54 is opened on the inner wall of the processing box 1, and a threaded rod 24 is rotatably installed in the moving groove 54. One end of the threaded rod 24 extends to the outside of the processing box 1 and is connected to the output shaft of the drive motor 6. A threaded block 25 is threadedly sleeved on the threaded rod 24, and the threaded block 25 is slidably set in the moving groove 54. A moving box 26 is installed on the side of the threaded block 25. Specifically, the width of the moving box 26 is the same as the width of the moving frame 28. An electric push rod 27 is installed in the moving box 26, and the moving frame 28 is installed at the movable end of the electric push rod 27. A first corrugated dust cover 50 is installed on both sides of the threaded block 25. The two first corrugated dust covers 50 are respectively sleeved on the outside of the threaded rod 24 on both sides of the threaded block 25. A second corrugated dust cover 51 is provided between the moving box 26 and the moving frame 28, and the second corrugated dust cover 51 is sleeved on the outside of the electric push rod 27.

[0039] Specifically, by adjusting the position of the electrostatic roller 29, the electrostatic roller 29 can adsorb dust at different heights and horizontal positions. At the same time, the electrostatic roller 29 can be brought into contact with the brush roller 37 to clean the adsorbed resin dust for recycling. Through the action of the first corrugated dust cover 50 and the second corrugated dust cover 51, folding protection can be performed to prevent dust from affecting the threaded rod 24 and the electric push rod 27.

[0040] like Figure 1 、 Figure 6 、 Figure 7 and Figure 8 As shown, the driving assembly includes an output motor 7 installed on the side of the processing box 1, and a movable groove 55 is provided on the inner wall of the processing box 1. A rotating rod 30 is rotatably installed in the movable groove 55. One end of the rotating rod 30 extends to the outside of the processing box 1 and is connected to the output shaft of the output motor 7. A square rod 31 is installed on the other end of the rotating rod 30. Two movable hollow blocks 32 are movably provided in the movable groove 55. Both movable hollow blocks 32 are provided with movable holes, and movable columns 33 are rotatably installed on the two movable holes. The ends of the two movable columns 33 are provided with rectangular holes that are compatible with the square rod 31. The two movable columns 33 are both sleeved on the outside of the square rod 31. The two movable columns 33 are fixedly sleeved with a first bevel gear 34. The sides of the two movable hollow blocks 32 are rotatably installed It is equipped with a moving rod 35, and two brush rollers 37 are respectively installed on the two moving rods 35. The other ends of the two moving rods 35 extend into the two movable hollow blocks 32 and are respectively installed with second bevel gears 36. The two first bevel gears 34 are respectively engaged with the two second bevel gears 36. The processing box 1 is provided with an elastic extrusion unit that moves the two movable hollow blocks 32. The elastic extrusion unit is installed in conjunction with the moving frame 28. A fixed box 8 is installed on the side of the processing box 1. A reciprocating screw rod 42 is rotatably installed in the fixed box 8. An L-shaped plate 9 is threaded on the reciprocating screw rod 42. One end of the L-shaped plate 9 is slidably set in the fixed box 8, and the other end is fixedly connected to the U-shaped tube 10. The reciprocating screw rod 42 is installed in conjunction with the rotating rod 30 through the transmission unit.

[0041] Specifically, by rotating the brush roller 37 in multiple lateral positions, it is convenient to clean the surface of the electrostatic roller 29. At the same time, the elastic extrusion unit is used to make the bristles fit into the electrostatic roller 29 and deform, thereby ensuring that the bristles are in full contact with the surface of the electrostatic roller 29, effectively improving the subsequent cleaning effect. By moving the U-shaped tube 10 back and forth, the spray nozzle can be moved back and forth, and then the two L-shaped blocks 22 are evenly sprayed, thereby avoiding dead corners that affect the subsequent cleaning effect.

[0042] like Figure 4 、 Figure 7 and Figure 8As shown, the elastic extrusion unit includes trapezoidal plates 38 respectively installed on the sides of the two movable hollow blocks 32, and the other sides of the two movable hollow blocks 32 are installed with tension springs 40 and baffles 41. The other ends of the two tension springs 40 are respectively installed on the side walls of the movable groove 55. Two extrusion blocks 39 are installed on the side of the movable frame 28, and balls are movably installed on the bottom of the two extrusion blocks 39.

[0043] Specifically, by bringing the two brush rollers 37 closer to each other, the bristles on the brush rollers 37 can be attached to the electrostatic roller 29 and deformed, thereby ensuring that the bristles are in full contact with the surface of the electrostatic roller 29 and effectively improving the subsequent cleaning effect.

[0044] like Figure 6 As shown, the transmission unit includes a transmission cavity opened on the processing box 1, a third bevel gear 43 is sleeved on the rotating rod 30, one end of the reciprocating screw 42 extends into the transmission cavity and is installed with a fourth bevel gear 44, and the third bevel gear 43 and the fourth bevel gear 44 are meshed.

[0045] In this solution, the third bevel gear 43 and the fourth bevel gear 44 are provided to facilitate the rotation of the rotating rod 30 and the rotation of the reciprocating screw rod 42 at the same time.

[0046] Specifically, by rotating the rotating rod 30 and the reciprocating screw 42 simultaneously, the rotation of the brush roller 37 and the reciprocating movement of the U-shaped tube 10 can be performed simultaneously, avoiding the need to add additional driving components.

[0047] like Figure 3-Figure 5 As shown, the isolation and sealing assembly includes two trapezoidal blocks 16 and two L-shaped blocks 22 installed on the inner wall of the processing box 1, wherein a placement groove is provided on the side of one of the trapezoidal blocks 16, in which a fixed electric push rod 17 is installed, and a blocking plate 18 is installed on the movable end of the fixed electric push rod 17, and two slide grooves 53 are provided at the bottom of the other trapezoidal block 16, and slide rods are installed in the two slide grooves 53. Slide blocks 19 are slidably sleeved on the two slide rods, and return springs 20 are installed on the sides of the two slide rods. The two return springs 20 are respectively sleeved on the outside of the two slide rods, and an L-shaped partition 21 is jointly installed at the bottom of the two slides 19. The bottom of the L-shaped partition 21 is abutted against one of the L-shaped blocks 22, and the sides of the blocking plate 18 and the L-shaped partition 21 are provided with sealing gaskets, and an elastic spacer 56 is installed on the top of the movable frame 28.

[0048] Specifically, by setting two trapezoidal blocks 16, fixed electric push rods 17 and sealing plates 18, the processing box 1 can be divided into upper and lower parts. At the same time, the dust can be placed under the two trapezoidal blocks 16 by the dust collection mechanism, thereby isolating the dust, thereby avoiding affecting the dust collection during dust classification. The space in the lower part of the processing box 1 can be divided again by the sliding rod, slider 19, return spring 20, L-shaped partition 21 and L-shaped block 22. By setting the sliding rod, slider 19 and return spring 20, the L-shaped partition 21 can be pushed to move and release the blockage when the electrostatic roller 29 moves, thereby facilitating the transfer of adsorbed dust and reducing mixing. At the same time, after cleaning, the L-shaped partition 21 blocks the gap between the two L-shaped blocks 22 to prevent dust from flying out of the gap. By setting the elastic spacer 56, it is convenient to block the gap between the two L-shaped blocks 22 during cleaning to prevent dust from passing through.

[0049] like Figure 5 and Figure 9 As shown, a fixed hollow block 45 is installed on the inner wall of the side of the processing box 1, and a movable rod 46 is rotatably installed in the fixed hollow block 45. The other end of the movable rod 46 extends to the outside of the fixed hollow block 45 and is installed with a fixed plate 48. A torsion spring 47 is provided between the movable rod 46 and the fixed hollow block 45. A movable plate 49 is installed at the bottom of the movable frame 28. A vibration plate 23 is installed on the side of the processing box 1, and a knocking block 57 is provided on the vibration plate 23.

[0050] In this solution, by setting the vibration plate 23, the fixed hollow block 45, the movable rod 46, the torsion spring 47, the fixed plate 48 and the movable plate 49, when the movable frame 28 moves, the fixed plate 48 can be moved to knock the knocking block 57, thereby causing the vibration plate 23 to vibrate.

[0051] Specifically, by striking the striking block 57 , the vibration plate 23 can be vibrated, thereby raising the dust, thereby preventing the dust from settling and accumulating to affect the adsorption effect.

[0052] like Figure 1 As shown, an exhaust port is fixedly provided on the side of the processing box 1 , an isolation net is fixedly provided on the exhaust port, and two air supply pipes 12 are fixedly provided on the other side of the processing box 1 .

[0053] Specifically, by allowing the gas to escape, excessive internal pressure can be avoided, and by adding inert gas or nitrogen, the oxygen concentration can be diluted and the combustion reaction can be suppressed, thereby effectively reducing the risk of dust explosion.

[0054] like Figure 1-Figure 3As shown, the filtering and collecting mechanism includes a pulse dust cleaner 4 and an exhaust fan 13 respectively installed on the top and side of the processing box 1, the other end of the exhaust pipe 3 is installed on the inlet end of the exhaust fan 13, and the air inlet and outlet pipes 5 are respectively fixed on the opposite sides of the processing box 1. A skeleton 14 is installed in the processing box 1, and a mounting port is provided on the side of the skeleton 14. The outlet end, air inlet and mounting port of the exhaust fan 13 are jointly installed with a transmission pipe, and a plurality of filter bags 15 are fixed on the skeleton 14. Specifically, the pulse dust cleaner 4, the skeleton 14 and the filter bags 15 are existing technologies, and their usage methods and principles are consistent with those of the bag dust collector model HK-200 of Huakang Environmental Protection. The pulse dust cleaner 4 can also adopt the bag dust collector pulse dust cleaner disclosed in the utility model patent CN221385626U, which will not be repeated here. A sliding hole is provided on the side of the processing box 1, and a collection box 52 is slidably installed on the sliding hole.

[0055] In this solution, the pulse dust cleaner 4, the air inlet and outlet pipes 5, the exhaust fan 13, the frame 14, the filter bag 15 and the collection box 52 are arranged to facilitate the adsorption and filtration of dust.

[0056] Specifically, through the setting of the air inlet and outlet pipe 5 and the exhaust fan 13, the dust can be adsorbed in combination with the exhaust pipe 3, and then filtered through the filter bag 15. The filtered gas is discharged from the outlet pipe 5. At this time, the dust will be filtered by the filter bag 15 and be on its surface. Then, the dust on the filter bag 15 is impacted by the pulse cleaner 4 to make it fall. The setting of the collection box 52 facilitates the collection of the separated resin dust.

[0057] The dry grinding method of the explosion-proof automobile paint surface repair dry grinding device comprises the following steps:

[0058] S1, using the sander 2 to adhere to the paint surface that needs to be repaired on the car and perform a sanding operation;

[0059] S2, the filter mechanism filters and collects the dust;

[0060] S3. The classification mechanism divides the dust into metal dust and vertical dust.

[0061] The working principle of this device is that before use, the external water supply pipe is first connected to the water pump 11, and then the staff holds the grinder 2 and starts the air motor on the grinder 2. The output of the air motor will cause the grinding disc to rotate, and then the grinding disc is brought close to and fits the paint surface on the car that needs repair, thereby performing the grinding operation.

[0062] At the same time, during the grinding process, the exhaust fan 13 is started, and the exhaust fan 13 will absorb the dust generated by dry grinding through the exhaust pipe 3. The absorbed dust-containing gas will enter the area on the upper side of the trapezoidal block 16 inside the processing box 1 through the transmission pipe and the air inlet, and then be filtered by the filter bag 15 and discharged from the outlet pipe 5. At this time, the dust will adhere to and accumulate on the filter bag 15. When the dry grinding is completed, the fixed electric push rod 17 is started, and the output of the fixed electric push rod 17 will cause the blocking plate 18 to move, and the blocking plate 18 moves The blockage of the gap between the two trapezoidal blocks 16 will be cancelled. After the blockage is released, the pulse cleaner 4 will be started. The pulse cleaner 4 will impact the dust on the filter bag 15 to move it to the bottom of the trapezoidal block 16. When the dust moves to the bottom of the trapezoidal block 16, the fixed electric push rod 17 will be started to reset the blocking plate 18. The blocking plate 18 will be reset to cooperate with the two trapezoidal blocks 16 to separate the processing box 1, thereby isolating the dust, thereby avoiding affecting the dust collection during dust classification.

[0063] After sealing, inert gas is added through the two air supply pipes 12, and then the electrostatic roller 29 is started. The output of the electrostatic roller 29 will generate static electricity, which will then adsorb the dust. Then the drive motor 6 and the electric push rod 27 are started. The output of the drive motor 6 will cause the threaded rod 24 to rotate, and the rotation of the threaded rod 24 will cause the threaded block 25 to move. The movement of the threaded block 25 will cause the moving box 26 to move. The movement of the moving box 26 will cause the electric push rod 27 to move. The movement of the electric push rod 27 will cause the moving frame 28 to move. The movement of the moving frame 28 will cause the electrostatic roller 29 to move. At the same time, the output of the electric push rod 27 will cause the moving frame 28 to move up and down. The up and down movement of the moving frame 28 will cause the electrostatic roller 29 to move up and down, thereby adsorbing dust at different positions and heights. After adsorption for a period of time, the electrostatic roller 29 stops operating. At this time, the aluminum and copper dusts discharge quickly and fall down. The resin dust has extremely weak electrical conductivity and is difficult to discharge its charge, so it is still firmly adsorbed on the electrostatic roller 29. , and then the electrostatic roller 29 is reset by the electric push rod 27. After the reset, the moving frame 28 is moved to the left by the driving motor 6 and the threaded rod 24. When the moving box 26 and the moving frame 28 are in contact with the L-shaped partition 21, the moving box 26 and the moving frame 28 continue to move and squeeze the L-shaped partition 21 to move it. When the moving frame 28 is aligned with the middle position of the two L-shaped blocks 22, the driving motor 6 stops outputting, and the electric push rod 27 outputs to make the moving frame 28 move down. The downward movement of the moving frame 28 will make the squeezing block 39 move down. When the squeezing block 39 is aligned with the trapezoidal plate 38 When in contact, the extrusion block 39 continues to move downward to squeeze the trapezoidal plate 38 to move, the movement of the trapezoidal plate 38 will cause the movable hollow block 32 to move, the movement of the movable hollow block 32 will cause the moving rod 35 to move, and the movement of the moving rod 35 will cause the brush roller 37 to move, thereby causing the bristles to fit into the electrostatic roller 29 and deform, thereby ensuring that the bristles are in full contact with the surface of the electrostatic roller 29, effectively improving the subsequent cleaning effect. At this time, the extrusion block 39 is in contact with the vertical surface of the trapezoidal plate 38, and at this time the moving box 26 will continue to block the L-shaped partition 21 to prevent the L-shaped partition 21 from resetting.The output motor 7 is then started, and the output motor 7 will cause the rotating rod 30 to rotate. The rotation of the rotating rod 30 will cause the square rod 31 to rotate. The rotation of the square rod 31 will cause the movable column 33 to rotate. The rotation of the movable column 33 will cause the first bevel gear 34 to rotate. The rotation of the first bevel gear 34 will cause the second bevel gear 36 to rotate. The rotation of the second bevel gear 36 will cause the moving rod 35 to rotate. The rotation of the moving rod 35 will cause the brush roller 37 to rotate, thereby sweeping the dust on the surface of the electrostatic roller 29. At this time, the dust will be blocked by the L-shaped partition 21 and the elastic spacer 56, and will be under the two L-shaped blocks 22. When cleaning is completed, the moving frame 28 is reset and moved by the driving motor 6 and the electric push rod 27. After the moving frame 28 is reset, the L-shaped partition 21 will be reset under the action of the reset spring 20. At this time, the water pump 11 is started, and the water pump 11 will Through the connecting tube and the U-shaped tube 10, multiple spray nozzles spray water mist. At this time, the water mist will reduce the scattered dust, and can clean the dust on the brush roller 37, and then reduce the resin dust and put it in the collection box 52. Then repeat the above operation for adsorption, so as to classify and store the dust, which is convenient for the later collection and recycling of metal dust. At the same time, the rotation of the rotating rod 30 will cause the third bevel gear 43 to rotate, and the rotation of the third bevel gear 43 will drive the fourth bevel gear 44 to rotate. The rotation of the fourth bevel gear 44 will cause the reciprocating screw 42 to rotate. The rotation of the reciprocating screw 42 will cause the L-shaped plate 9 to move back and forth. The back and forth movement of the L-shaped plate 9 will cause the U-shaped tube 10 to move back and forth. The back and forth movement of the U-shaped tube 10 will cause the spray nozzle to move back and forth, thereby increasing the spraying range, thereby avoiding dead angles and affecting use.

[0064] When the moving box 26 and the moving frame 28 are reset and moved, the extrusion block 39 will not squeeze the trapezoidal plate 38, and the movable hollow block 32 will not be subjected to force. At this time, the movable hollow block 32 will be reset under the action of the tension spring 40. The reset of the movable hollow block 32 will reset the moving rod 35, and then reset the brush roller 37, so as to facilitate the next use. At the same time, when the moving box 26 and the moving frame 28 are reset and moved, the L-shaped partition 21 will not be squeezed. At this time, it will be reset under the action of the sliding rod, slider 19 and reset spring 20, and then the gap between the two L-shaped blocks 22 will be blocked, thereby preventing unseparated dust from directly entering and affecting the classification effect.

[0065] During adsorption, the movable frame 28 can be moved up and down by the electric push rod 27. The up and down movement of the movable frame 28 will cause the movable plate 49 to move up and down. When the movable plate 49 is parallel to the local position above the fixed plate 48, the movable frame 28 is moved by driving the motor 6, which will cause the movable plate 49 to squeeze the fixed plate 48. At this time, the fixed plate 48 rotates. When the movable plate 49 is disengaged from the fixed plate 48, the fixed plate 48 is not subjected to force. At this time, the torsion spring 47 drives the movable rod 46 to move, causing the fixed plate 48 to knock on the knocking block 57, causing the vibration plate 23 to vibrate, thereby causing the dust to be raised, thereby preventing the dust from settling and accumulating and affecting the adsorption effect.

[0066] The above embodiments merely represent one or several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An explosion-proof dry grinding device for automobile paint surface repair, comprising a processing box (1), a grinding machine (2), a grinding sheet and an exhaust pipe (3), characterized in that: The processing box (1) is provided with a sealed door, the processing box (1) is provided with a filtering and collecting mechanism adapted to the exhaust pipe (3), and the processing box (1) is provided with a classification mechanism; The classification mechanism comprises a moving frame (28) and two brush rollers (37) arranged in the processing box (1), an electrostatic roller (29) is installed on the moving frame (28), an adjustment component adapted to the moving frame (28) is provided on the processing box (1), a U-shaped tube (10) is slidably installed on the processing box (1), a plurality of spray nozzles are provided on the U-shaped tube (10), a water pump (11) is installed on the side of the processing box (1), a connecting pipe is installed between the outlet end of the water pump (11) and the water inlet end of the U-shaped tube (10), a driving component for moving the U-shaped tube (10) and moving and rotating the two brush rollers (37) is provided on the processing box (1), and an isolation and blocking component is provided on the processing box (1); The driving assembly includes an output motor (7) installed on the side of the processing box (1), a movable groove (55) is provided on the inner wall of the side of the processing box (1), a rotating rod (30) is rotatably installed in the movable groove (55), one end of the rotating rod (30) extends to the outside of the processing box (1) and is connected to the output shaft of the output motor (7), and the other end of the rotating rod (30) is installed with a square rod (31), two movable hollow blocks (32) are movably provided in the movable groove (55), the sides of the two movable hollow blocks (32) are provided with movable holes, and movable columns (33) are rotatably installed on the two movable holes, and the ends of the two movable columns (33) are provided with rectangular holes adapted to the square rod (31), and the two movable columns (33) are sleeved with a first bevel gear (34), and the sides of the two movable hollow blocks (32) are rotatably installed with moving rods. (35), the two brush rollers (37) are respectively installed on the ends of the two moving rods (35), the other ends of the two moving rods (35) respectively extend into the two movable hollow blocks (32) and are respectively installed with second bevel gears (36), the two first bevel gears (34) are respectively engaged with the two second bevel gears (36), the processing box (1) is provided with an elastic extrusion unit for moving the two movable hollow blocks (32), the elastic extrusion unit is installed in conjunction with the moving frame (28), a fixed box (8) is installed on the side of the processing box (1), a reciprocating screw (42) is rotatably installed in the fixed box (8), an L-shaped plate (9) is threadedly sleeved on the reciprocating screw (42), the U-shaped tube (10) is installed on the top of the L-shaped plate (9), and the reciprocating screw (42) is installed in conjunction with the rotating rod (30) through a transmission unit.

2. The explosion-proof automobile paint surface repair dry grinding device according to claim 1 is characterized in that: The adjustment assembly includes a drive motor (6) installed on the side of the processing box (1), a movable groove (54) is opened on the inner wall of the processing box (1), a threaded rod (24) is rotatably installed in the movable groove (54), one end of the threaded rod (24) extends to the outside of the processing box (1) and is connected to the output shaft of the drive motor (6), a threaded block (25) is threadedly sleeved on the threaded rod (24), a movable box (26) is installed on the side of the threaded block (25), an electric push rod (27) is installed in the movable box (26), and the movable frame (28) is installed on the movable end of the electric push rod (27), a first corrugated dust cover (50) is installed on both sides of the threaded block (25), and the two first corrugated dust covers (50) are respectively sleeved on the outside of the threaded rod (24) on both sides of the threaded block (25), and a second corrugated dust cover (51) is installed between the movable box (26) and the movable frame (28).

3. The explosion-proof automobile paint surface repair dry grinding device according to claim 1 is characterized in that: The elastic extrusion unit includes a trapezoidal plate (38) respectively installed on the sides of the two movable hollow blocks (32), the other sides of the two movable hollow blocks (32) are installed with a tension spring (40) and a baffle (41), the other ends of the two tension springs (40) are respectively installed on the side walls of the movable groove (55), and two extrusion blocks (39) are installed on the side of the movable frame (28), and the bottoms of the two extrusion blocks (39) are movably installed with balls.

4. The explosion-proof automobile paint surface repair dry grinding device according to claim 1 is characterized in that: The transmission unit comprises a transmission cavity opened on the processing box (1); a third bevel gear (43) is sleeved on the rotating rod (30); one end of the reciprocating screw rod (42) extends into the transmission cavity and is mounted with a fourth bevel gear (44); the third bevel gear (43) and the fourth bevel gear (44) are meshed.

5. The explosion-proof automobile paint surface repair dry grinding device according to claim 1 is characterized in that: The isolation and blocking assembly comprises two trapezoidal blocks (16) and two L-shaped blocks (22) mounted on the inner wall of the side of the processing box (1), wherein a placement groove is provided on the side of one of the trapezoidal blocks (16), a fixed electric push rod (17) is installed in the placement groove, and a blocking plate (18) is installed at the movable end of the fixed electric push rod (17), and two sliding grooves (53) are provided at the bottom of the other trapezoidal block (16), a sliding rod is installed in each of the two sliding grooves (53), and a slider (19) is provided on each of the two sliding rods. ), the sides of the two sliders (19) are both installed with return springs (20), the other ends of the two return springs (20) are respectively installed on the inner walls of the sides of the two slide grooves (53), and the bottoms of the two sliders (19) are jointly installed with an L-shaped partition (21), the bottom of the L-shaped partition (21) is against one of the L-shaped blocks (22), the sides of the blocking plate (18) and the L-shaped partition (21) are both provided with sealing gaskets, and the top of the moving frame (28) is installed with an elastic spacer (56).

6. The explosion-proof automobile paint surface repair dry grinding device according to claim 1 is characterized in that: A fixed hollow block (45) is installed on the inner wall of the side of the processing box (1), and a movable rod (46) is installed in the inner rotation of the fixed hollow block (45). The other end of the movable rod (46) extends to the outside of the fixed hollow block (45) and is installed with a fixed plate (48). A torsion spring (47) is installed between the movable rod (46) and the fixed hollow block (45). A movable plate (49) is installed at the bottom of the movable frame (28). A vibration plate (23) is installed on the inner wall of the side of the processing box (1), and a knocking block (57) is installed on the top of the vibration plate (23).

7. The explosion-proof automobile paint surface repair dry grinding device according to claim 1 is characterized in that: An exhaust port is fixedly provided on the side of the processing box (1), an isolation net is fixedly provided on the exhaust port, and two air supply pipes (12) are fixedly provided on the other side of the processing box (1).

8. The explosion-proof automobile paint surface repair dry grinding device according to claim 1, characterized in that: The filtering and collecting mechanism comprises a pulse dust collector (4) and an exhaust fan (13) respectively mounted on the processing box (1); the other end of the exhaust pipe (3) is mounted on the inlet end of the exhaust fan (13); an air inlet and an air outlet pipe (5) are fixed on opposite sides of the processing box (1); a frame (14) is mounted on the inner wall of the processing box (1); a mounting port is provided on the side of the frame (14); a transmission pipe is mounted on the outlet end of the exhaust fan (13), the air inlet and the mounting port; a plurality of filter bags (15) are fixed on the frame (14); a sliding hole is provided on the side of the processing box (1); a collection box (52) is slidably mounted on the sliding hole.

9. A dry grinding method for the explosion-proof automobile paint repair dry grinding device according to any one of claims 1 to 8, characterized in that: The steps include: S1, using a grinder (2) to apply abrasive to the paint surface of the car that needs repair; S2, the filter mechanism filters and collects the dust; S3. The classification mechanism divides the dust into metal dust and vertical dust.

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