Laser cleaning machine for rust cleaning and cleaning method thereof

Abstract

The invention discloses a laser cleaning machine for rust cleaning and a cleaning method thereof.The laser cleaning machine comprises a rack and further comprises a brushing assembly used for cleaning impurities on a workpiece and preventing the workpiece from being ignited; the vibration assembly enables the workpiece to slide at a constant speed through vibration; the brushing assembly comprises a sieve plate, a guide plate, screw rods, a sliding barrel, a rack A, a transmission gear and a cam, the two screw rods are symmetrically and rotationally connected to the two sides of the sieve plate, the sliding barrel is in threaded connection with the screw rods, the rack A is fixedly connected to the front face of the sliding barrel, the sliding speed of the sliding barrel is the same as the speed of a workpiece, and the transmission gear is in meshed connection with the rack A; a shaft is fixedly connected to the axis of the transmission gear, the shaft is rotationally connected with the sieve plate, and a cam is fixedly connected to the shaft; the laser rust removal device can effectively avoid workpiece combustion in the laser rust removal process.

Description

Technical Field

[0001] The invention belongs to the technical field of rust removal, and in particular relates to a laser cleaning machine for cleaning rust and a cleaning method thereof. Background Art

[0002] Laser rust removal is a method that utilizes the high energy, high frequency and high power characteristics of lasers. The laser beam is irradiated on the surface of the material covered with oxides, and the oxide layer is burned at high temperature to remove the rust layer. However, during the burning process, if impurities or oil stains are attached to the surface of the workpiece, it is easy to burn in a high temperature environment. A structure that can remove impurities and oil stains on the surface of the workpiece is now proposed. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a laser cleaning machine for rust cleaning and a cleaning method thereof, which solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser cleaning machine for rust cleaning and a cleaning method thereof, comprising a frame, and also comprising: a brush assembly, used to clean impurities on a workpiece to prevent ignition; a vibration assembly, which causes the workpiece to slide at a uniform speed by vibration; the brush assembly comprises a screen plate, a guide plate, a screw rod, a slide cylinder, a rack A, a transmission gear and a cam, the two screw rods are symmetrically rotatably connected on both sides of the screen plate, the slide cylinder is threadedly connected to the screw rod, the front side of the slide cylinder is fixedly connected to the rack A, the sliding speed of the slide cylinder should be the same as the speed of the workpiece, the transmission gear is meshedly connected to the rack A, the center of the transmission gear is fixedly connected to a shaft, the shaft is rotatably connected to the screen plate, and the shaft is fixedly connected to the cam.

[0005] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0006] Further technical solution: A rack B is fixedly connected to the bottom of the slide cylinder, and the rack B can be meshed with the pinion during its sliding process. The pinion is fixedly connected to the shaft, and the shaft is rotatably connected to the screen plate. A bent pipe is fixedly connected between the two shafts.

[0007] Further technical solution: The vibration assembly includes a motor, an eccentric wheel and a spring. The motor is fixedly connected to the bottom of the screen plate. Eccentric wheels are fixedly connected on both sides of the motor output shaft. One end of the spring is fixedly connected to the screen plate, and the other end of the spring is fixedly connected to the frame. The frame is tilted.

[0008] Further technical solution: A main shaft is fixedly connected to any of the eccentric wheels, a sprocket is fixedly connected to the main shaft, the sprocket is meshingly connected to the chain, the chain is meshingly connected to two sprockets B, and the two sprockets B are respectively fixedly connected to the screw rod, so that the workpiece can vibrate and slide on the screen plate while the slide cylinder can slide synchronously with it.

[0009] Further technical solution: The coating assembly includes a rack, a frame, and a slider. The two transmission gears are respectively meshed with racks on one side, the racks are fixedly connected to the frame, the frame is fixedly connected to the slider, the slider is slidably connected to the screen plate, and a brush is fixedly connected to the bottom of the frame for evenly coating the alcohol on the workpiece.

[0010] Further technical solution: any one of the sliders is slidably connected to the support rod, the support rod is fixedly connected to the screen plate, the other slider is threadedly connected to the screw rod, the screw rod is rotatably connected to the screen plate, and a screw rod without a self-locking effect is selected, and a liquid storage tank is fixedly connected to the screw rod, and the liquid storage tank is rotatably connected to the support rod, so that after the workpiece passes through the first group of cams, alcohol is sprayed on it and the alcohol is evenly spread to remove oil stains on it.

[0011] Further technical solution: The positioning assembly includes a half gear, a positioning rack, a joint and a bevel block, the half gear is fixedly connected to the shaft, the half gear is meshingly connected to the positioning rack, the half gear can periodically contact the positioning rack and push it to slide, the joint is fixedly connected to the positioning rack, and the bevel block is fixedly connected to the joint.

[0012] Further technical solution: A cone head is provided on the inclined block, and the inclined block is used to limit the cone head. The cone head is fixedly connected to the base plate, and the base plate is slidably connected in the groove of the screen plate. A reset spring is provided at the connection between the base plate and the screen plate, so that after the inclined block stops limiting the cone head, the cone head is pulled by the spring, so that the two cone heads cooperate with each other to clamp the workpiece.

[0013] Further technical solution: a connecting ear is fixedly connected to one side of the half gear, the connecting ear is slidably connected to the guide rod, the guide rod is fixedly connected to the positioning block, the positioning block is fixedly connected to the screen plate, a spring is sleeved on the guide rod, one end of the spring is fixedly connected to the connecting ear, and the other end of the spring is fixedly connected to the positioning block.

[0014] Beneficial Effects

[0015] The present invention provides a laser cleaning machine and a cleaning method for rust cleaning, which have the following beneficial effects compared with the prior art:

[0016] 1. The user places the workpiece on the guide plate and then starts the motor. At this time, the workpiece on the screen plate starts to vibrate on the guide plate and slide at a constant speed;

[0017] 2. When the workpiece passes between the two cams, since the protrusions of the two cams face opposite directions, the two cams can contact the workpiece one after another, and push the workpiece to slide to both sides of the screen plate through the arc-shaped protrusions on them, so that the workpiece is cleaned by the brush head on the guide plate;

[0018] 3. When one end of the workpiece is on the bent pipe, the bent pipe starts to rotate with the shaft as the fulcrum, thereby pushing the workpiece on it to turn over. At the same time, the other end of the workpiece is positioned by the cone head, so that the workpiece is turned over with this point as the fulcrum, so that both sides of the workpiece can contact the brush head on the screen plate, and during its sliding process, it can be pushed to slide on the screen plate through the next set of cams to achieve double-sided cleaning;

[0019] 4. When the workpiece passes under the liquid storage tank, the liquid storage tank is driven by the transmission gear to rotate synchronously. During the rotation of the liquid storage tank, the concave hole on the top begins to gradually face downward, so that the cleaning liquid in the liquid storage tank can gradually flow out to the workpiece below it, and the two brushes begin to move towards each other, so that when the workpiece passes under them, the cleaning liquid on it can be evenly spread. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is an enlarged schematic diagram of the cam structure of the present invention.

[0022] Figure 3 It is an enlarged schematic diagram of the positioning structure of the present invention.

[0023] Figure 4 It is an enlarged schematic diagram of the cleaning structure of the present invention.

[0024] Figure 5 It is a side view structural schematic diagram of the present invention.

[0025] Figure 6 It is an enlarged schematic diagram of the transmission structure of the present invention.

[0026] Figure 7 It is a side view structural schematic diagram of the present invention.

[0027] Figure 8 It is a schematic diagram of the top view structure of the present invention.

[0028] Reference numerals: frame 101, brushing assembly 2, vibration assembly 3, coating assembly 4, positioning assembly 5, sieve plate 201, guide plate 202, screw rod 203, slide 204, rack A 205, transmission gear 206, cam 207, shaft 208, rack B 209, sub-gear 2001, shaft 2002, elbow 2003, motor 301, eccentric wheel 302, main shaft 303, chain Wheel 304, sprocket B305, chain 306, spring 307, rack 401, frame 402, slider 403, brush 404, support rod 405, screw 406, liquid storage tank 407, half gear 501, positioning rack 502, joint 503, bevel block 504, cone head 505, bottom plate 506, connecting ear 507, return spring 508, guide rod 509, positioning block 5001. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] See also Figures 1 to 3 , provided in one embodiment of the present invention, is a laser cleaning machine for cleaning rust and a cleaning method thereof, comprising a frame 101, and further comprising:

[0032] A cleaning brush assembly 2, used to clean impurities on the workpiece to prevent them from being ignited;

[0033] A vibration component 3 causes the workpiece to slide at a uniform speed by vibration;

[0034] The brushing assembly 2 includes a sieve plate 201, a guide plate 202, a screw rod 203, a slide 204, a rack A205, a transmission gear 206 and a cam 207. The two screw rods 203 are symmetrically connected to the two sides of the sieve plate 201 for rotation. The slide 204 is threadedly connected to the screw rod 203. The front side of the slide 204 is fixedly connected to the rack A205. The sliding speed of the slide 204 should be the same as the speed of the workpiece. The transmission gear 206 is meshedly connected to the rack A205. The transmission gear 206 is fixedly connected to a shaft 208 at the axis center. The shaft 208 is rotationally connected to the sieve plate 201, and a cam 207 is fixedly connected to the shaft 208.

[0035] See also Figure 2 as well as Figure 3Specifically, a rack B209 is fixedly connected to the bottom of the slide cylinder 204, and the rack B209 can be meshed with the sub-gear 2001 during its sliding process. The sub-gear 2001 is fixedly connected to the shaft 2002, and the shaft 2002 is rotatably connected to the screen plate 201. A bent pipe 2003 is fixedly connected between the two shafts 2002.

[0036] See also Figure 1 as well as Figure 7 Specifically, the vibration component 3 includes a motor 301, an eccentric wheel 302 and a spring 307. The motor 301 is fixedly connected to the bottom of the sieve plate 201. The eccentric wheels 302 are fixedly connected to both sides of the output shaft of the motor 301. One end of the spring 307 is fixedly connected to the sieve plate 201, and the other end of the spring 307 is fixedly connected to the frame 101. The frame 101 is tilted.

[0037] See also Figure 5 as well as Figure 7 Specifically, any one of the eccentric wheels 302 is fixedly connected to a main shaft 303, and the main shaft 303 is fixedly connected to a sprocket 304, and the sprocket 304 is meshingly connected to a chain 306, and the chain 306 is meshingly connected to two sprockets B305, and the two sprockets B305 are respectively fixedly connected to the screw rod 203, so that the workpiece can vibrate and slide on the screen plate 201 while the slide cylinder 204 can slide synchronously with it.

[0038] For the above examples, those skilled in the art should be aware that when implementing the above technical solutions, they are not limited to the specific chain 306 described in the above embodiments. For example, in the present application, the chain 306 can be eliminated and the screw rod 203 can be driven solely by a motor. The purpose of this arrangement is to increase the accuracy of the transmission through this arrangement so as to facilitate the adjustment of its transmission ratio.

[0039] In the embodiment of the present invention, the user places the workpiece on the guide plate 202 and then starts the motor 301. At this time, the eccentric wheels 302 fixedly connected to both sides of the output shaft begin to rotate, and the screen plate 201 begins to vibrate under the action of the rotation of the eccentric wheel 302, and the vibration amplitude can be increased by the spring 307 fixedly set between the screen plate 201 and the frame 101. At this time, since the frame 101 is set tilted, the workpiece on the screen plate 201 begins to slide at a uniform speed while vibrating on the guide plate 202; at the same time, when the sprocket 304 rotates, the main shaft 303 fixedly connected thereto rotates synchronously , and the sprocket 304 fixedly connected thereto starts to rotate, and drives the chain 306 meshing with it to start rotating at a uniform speed, then at this time, the two sprockets B305 start to rotate synchronously with the sprocket 304 under the cooperation of the chain 306 meshing with it, and make the screw rod 203 fixedly connected at the axis of the sprocket B305 rotate synchronously, then at this time, the slide 204 threadedly connected on the screw rod 203 starts to perform linear motion along the connection between it and the frame 101, then the slide 204 slides to drive the rack A205 fixedly connected thereto to slide synchronously, and the rack A205 starts to drive the meshing connected thereto The transmission gear 206 starts to rotate at a uniform speed, and the cam 207 fixedly connected to the shaft 208 rotates synchronously at this time. At the same time, because the protrusions of the two cams 207 face opposite directions, the two cams 207 can contact the workpiece successively and push the workpiece to slide to both sides of the screen plate 201 through the arc-shaped protrusions thereon. At the same time, during the sliding process of the workpiece, the impurities on the workpiece can be cleaned by the brush head on the screen plate 201, so that during the sliding process of the workpiece on the guide plate, the workpiece can be cleaned from the longitudinal and transverse directions to increase its cleaning effect. During this process, the workpiece always slides at a uniform speed on the screen plate 201. When one end of the workpiece slides onto the curved tube 2003, the slide 204 drives the rack B209 at the bottom to contact the sub-gear 2001 synchronously. Then, the sub-gear 2001 starts to rotate at a constant speed in cooperation with the rack B209 meshing with it. At this time, the curved tube 2003 starts to rotate with the shaft 2002 as a fulcrum, thereby pushing the workpiece on it to turn over, and turning the workpiece over with its other end as a fulcrum, so that both sides of the workpiece can contact the brush head on the screen plate 201, and during its sliding process, it can be pushed to slide on the screen plate 201 through the next set of cams 207 to achieve double-sided cleaning.

[0040] See also Figure 4 Specifically, the coating component 4 includes a rack 401, a frame 402, and a slider 403. The two transmission gears 206 are respectively meshed with racks 401 on one side, the racks 401 are fixedly connected to the frame 402, the frame 402 is fixedly connected to the slider 403, the slider 403 is slidably connected to the screen plate 201, and a brush 404 is fixedly connected to the bottom of the frame 402 for evenly coating the alcohol on the workpiece.

[0041] See also Figure 4 as well as Figure 8 Specifically, any one of the sliders 403 is slidably connected to the support rod 405, and the support rod 405 is fixedly connected to the screen plate 201. The other slider 403 is threadedly connected to the screw 406, and the screw 406 is rotatably connected to the screen plate 201, and a screw without a self-locking effect is selected. A liquid storage tank 407 is fixedly connected to the screw 406, and the liquid storage tank 407 is rotatably connected to the support rod 405, so that after the workpiece passes through the first group of cams 207, alcohol is sprayed on it and the alcohol is evenly spread to remove oil stains on it.

[0042] In the embodiment of the present invention, when the workpiece passes between the second set of cams 207, the rack 401 starts to rotate at a uniform speed in cooperation with the transmission gear 206 meshing with it, and drives the frame 402 fixedly connected thereto to make it start to perform linear motion along the connection with the screen plate 201. At this time, the two sliders 403 start to perform linear motion. At this time, since the screw 406 does not have the characteristic of self-locking effect, when the slider 403 performs linear motion, it can drive the screw 406 threadedly connected thereto to start to rotate at a uniform speed. At this time, the screw 406 drives the liquid storage tank 407 fixedly connected thereto to rotate synchronously. During the rotation of the liquid storage tank 407, the concave hole on the top thereof begins to gradually face downward, so that the cleaning liquid in the liquid storage tank 407 can gradually flow out to the workpiece below it. At the same time, in the frame When the frame 402 slides, it can drive the brush 404 fixed thereon to slide synchronously. At this time, the two brushes 404 begin to move toward each other, so that when the workpiece passes under them, the cleaning liquid on it can be evenly spread, so that it can be fully attached to the workpiece. Since two groups of liquid storage tanks 407 are arranged on the sieve plate 201, after the workpiece passes through the second group of curved pipes 2003 and is turned over, and when it passes under the next group of liquid storage tanks 407, the cleaning liquid can be coated on both sides of the workpiece. At the same time, after the side coated with the cleaning liquid faces downward, the workpiece vibrates on the sieve plate 201 and is pushed by the two cams 207, so that it can be effectively cleaned with the brush head on the sieve plate 201, so that the cleaning liquid can fully remove the oil stains on the workpiece, thereby realizing double-sided spraying of the cleaning liquid and then cleaning both sides.

[0043] See also Figure 3 Specifically, the positioning assembly 5 includes a half gear 501, a positioning rack 502, a joint 503 and a bevel block 504. The half gear 501 is fixedly connected to the shaft 2002. The half gear 501 is meshingly connected with the positioning rack 502. The half gear 501 can periodically contact the positioning rack 502 and push it to slide. The joint 503 is fixedly connected to the positioning rack 502, and the bevel block 504 is fixedly connected to the joint 503.

[0044] See also Figure 3 as well as Figure 6 Specifically, a cone head 505 is provided on the inclined block 504, and the inclined block 504 is used to limit the cone head 505. The cone head 505 is fixedly connected to the bottom plate 506, and the bottom plate 506 is slidably connected in the groove of the screen plate 201. A return spring is provided at the connection between the bottom plate 506 and the screen plate 201, so that after the inclined block 504 stops limiting the cone head 505, the cone head 505 is pulled by the spring, so that the two cone heads 505 cooperate with each other to clamp the workpiece.

[0045] See also Figure 3 as well as Figure 4 Specifically, a connecting ear 507 is fixedly connected to one side of the half gear 501, and the connecting ear 507 is slidably connected to the guide rod 509. The guide rod 509 is fixedly connected to the positioning block 5001, and the positioning block 5001 is fixedly connected to the screen plate 201. A spring is sleeved on the guide rod 509, one end of the spring is fixedly connected to the connecting ear 507, and the other end of the spring is fixedly connected to the positioning block 5001.

[0046] In the embodiment of the present invention, when the slide 204 drives the pinion 2001 to rotate through the rack B209 arranged thereunder, the half gear 501 fixedly connected to the shaft 2002 can be made to rotate synchronously, and the half gear 501 can drive the positioning rack 502 to start linear motion along the length direction of the guide rod 509, and start to compress the return spring 508 fixedly connected thereto, so that it is in a compressed state. At the same time, when the positioning rack 502 slides, the joint 503 fixedly connected thereto slides synchronously, and drives the inclined block 504 fixedly connected thereto, so that the inclined block 504 stops limiting the cone head 505. At this time, the cone head 505 begins to be tightly attached to the workpiece under the action of the spring at the connection between the bottom plate 506 and the screen plate 201, and its contact point should be When the workpiece is away from one end of the curved tube 2003, the two cone heads 505 can be used to position the other end of the workpiece to prevent it from sliding and making it impossible to turn the workpiece over. After the curved tube 2003 rotates 180 degrees, the workpiece is turned over and the half gear 501 is disconnected from the positioning rack 502. Therefore, the reset spring 508 starts to push the connecting ear 507, so that the half gear 501 can rebound and reset quickly, and then push the cone head 505 through the inclined block 504. Since the contact surfaces of the cone head 505 and the inclined block 504 are both arc surfaces, the cone head 505 starts to gradually reset and stops contacting the workpiece to avoid affecting the workpiece from sliding on the screen plate 201.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] The fixed connection referred to in this application refers to a connection in which a part or component is fixed without any relative movement, which can be divided into detachable connection and non-detachable connection.

[0049] (1) Removable connection: The parts are fixed together by screws, splines, wedge pins, etc. This connection method can be disassembled for maintenance without damaging the parts. However, the specifications of the connectors used must be correct (such as the length of the bolts, keys, and wedge pins) and they must be properly tightened.

[0050] (2) Non-detachable connection: mainly refers to welding, riveting and tenoning. Since forging, sawing or oxygen cutting are required for disassembly during maintenance or replacement, spare parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection and remedial measures (such as calibration, polishing, etc.) during connection.

[0051] The sliding connection referred to in the present application means that the component can slide along a linear trajectory, and the hinged connection referred to in the present application means that the component can rotate along an axial constraint.

[0052] In some cases, the sliding connection and hinge referred to in the present application may also be damped so that the components have the ability to maintain a desired position.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cleaning machine for cleaning rust, comprising a frame (101), characterized in that: Also includes: A cleaning brush assembly (2) is used to clean impurities on the workpiece to prevent them from being ignited; A vibration component (3) causes the workpiece to slide at a uniform speed by vibration; A coating component (4) is used to clean oil stains on the workpiece; and, a positioning assembly (5) for assisting in turning over the workpiece; The cleaning brush assembly (2) comprises a sieve plate (201), a guide plate (202), a screw rod (203), a slide cylinder (204), a rack A (205), a transmission gear (206) and a cam (207). The two screw rods (203) are symmetrically connected to the two sides of the sieve plate (201) for rotation. The slide cylinder (204) is threadedly connected to the screw rod (203). The front side of the slide cylinder (204) is fixedly connected to the rack A (205). The sliding speed of the slide cylinder (204) should be the same as the speed of the workpiece. The transmission gear (206) is meshedly connected to the rack A (205). The axis of the transmission gear (206) is fixedly connected to a shaft (208). The shaft (208) is rotationally connected to the sieve plate (201). The shaft (208) is fixedly connected to the cam (207).

2. The laser cleaning machine for rust removal according to claim 1, characterized in that: A rack B (209) is fixedly connected to the bottom of the slide cylinder (204), and the rack B (209) can be meshed with a sub-gear (2001) during its sliding process. The sub-gear (201) is fixedly connected to a shaft (2002), and the shaft (2002) is rotatably connected to the screen plate (201). A bent pipe (2003) is fixedly connected between the two shafts (2002).

3. The laser cleaning machine for rust removal according to claim 1, characterized in that: The vibration assembly (3) comprises a motor (301), an eccentric wheel (302) and a spring (307); the motor (301) is fixedly connected to the bottom of the sieve plate (201); the eccentric wheels (302) are fixedly connected to both sides of the output shaft of the motor (301); one end of the spring (307) is fixedly connected to the sieve plate (201); the other end of the spring (307) is fixedly connected to the frame (101); and the frame (101) is arranged to be inclined.

4. The laser cleaning machine for rust removal according to claim 3, characterized in that: A main shaft (303) is fixedly connected to any one of the eccentric wheels (302), a sprocket (304) is fixedly connected to the main shaft (303), the sprocket (304) is meshingly connected to a chain (306), the chain (306) is meshingly connected to two sprockets B (305), and the two sprockets B (305) are respectively fixedly connected to the screw rod (203), so that the workpiece can vibrate and slide on the screen plate (201) while the slide cylinder (204) slides synchronously with it.

5. The laser cleaning machine for rust removal according to claim 1, characterized in that: The coating assembly (4) comprises a rack (401), a frame (402), and a slider (403); one side of the two transmission gears (206) is respectively meshed with a rack (401); the rack (401) is fixedly connected to the frame (402); the frame (402) is fixedly connected to the slider (403); the slider (403) is slidably connected to the sieve plate (201); and a brush (404) is fixedly connected to the bottom of the frame (402) for evenly coating alcohol on a workpiece.

6. The laser cleaning machine for rust removal according to claim 5, characterized in that: Any one of the sliders (403) is slidably connected to the support rod (405), and the support rod (405) is fixedly connected to the screen plate (201). The other slider (403) is threadedly connected to the screw rod (406), and the screw rod (406) is rotationally connected to the screen plate (201), and a screw rod without a self-locking effect is selected. A liquid storage tank (407) is fixedly connected to the screw rod (406), and the liquid storage tank (407) is rotationally connected to the support rod (405), so that after the workpiece passes through the first group of cams (207), alcohol is sprayed on it and the alcohol is evenly spread to remove oil stains on it.

7. The laser cleaning machine for rust removal according to claim 1, characterized in that: The positioning assembly (5) comprises a half gear (501), a positioning rack (502), a joint (503) and an inclined block (504); the half gear (501) is fixedly connected to the shaft (2002); the half gear (501) is meshingly connected to the positioning rack (502); the half gear (501) can periodically contact the positioning rack (502) and push it to slide; the joint (503) is fixedly connected to the positioning rack (502); and the inclined block 5 (04) is fixedly connected to the joint (503).

8. The laser cleaning machine for rust removal according to claim 7, characterized in that: The inclined block (504) is provided with a cone head (505), and the inclined block (504) is used to limit the cone head (505). The cone head (505) is fixedly connected to the bottom plate (506), and the bottom plate (506) is slidably connected in the groove of the screen plate (201). A return spring is provided at the connection between the bottom plate (506) and the screen plate (201), so that after the inclined block (504) stops limiting the cone head (505), the cone head (505) is pulled by the spring, so that the two cone heads (505) cooperate with each other to clamp the workpiece.

9. The laser cleaning machine for rust removal according to claim 8, characterized in that: A connecting ear (507) is fixedly connected to one side of the half gear (501), and the connecting ear (507) is slidably connected to the guide rod (509). The guide rod (509) is fixedly connected to the positioning block (5001), and the positioning block (5001) is fixedly connected to the screen plate (201). A spring is sleeved on the guide rod (509), and one end of the spring is fixedly connected to the connecting ear (507), and the other end of the spring is fixedly connected to the positioning block (5001).

10. A cleaning method for a laser cleaning machine for cleaning rust, characterized in that: The following steps are involved: S1. The user places the workpiece on the guide plate and then starts the motor. At this time, the workpiece on the screen plate starts to slide at a constant speed while vibrating on the guide plate. S2. When the workpiece passes between the two cams, since the protrusions of the two cams face opposite directions, the two cams can contact the workpiece one after another, and push the workpiece to slide to both sides of the screen plate through the arc-shaped protrusions on them, so that the workpiece is cleaned by the brush head on the guide plate. S3. When one end of the workpiece is on the bent pipe, the bent pipe starts to rotate with the axis as the fulcrum, thereby pushing the workpiece on it to turn over. At the same time, the other end of the workpiece is positioned by the cone head, so that the workpiece is turned over with this point as the fulcrum, so that both sides of the workpiece can contact the brush head on the screen plate, and during its sliding process, it can be pushed to slide on the screen plate through the next set of cams to achieve double-sided cleaning. S4. When the workpiece passes under the liquid storage tank, the liquid storage tank rotates synchronously. During the rotation of the liquid storage tank, the concave hole on the top begins to gradually face downward, so that the cleaning liquid in the liquid storage tank can gradually flow out to the workpiece below it, and the two brushes begin to move towards each other, so that when the workpiece passes under them, the cleaning liquid on it can be evenly spread.

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