A fully automatic laser cutting equipment for sheet metal processing

Abstract

The present invention discloses a fully automatic laser cutting equipment for sheet metal processing, which belongs to the technical field of laser cutting equipment. The present invention comprises a frame placed on the floor of a workshop, an adjustment seat is movably installed on the frame, and a laser head is installed on the adjustment seat; a smoke conveying assembly is installed on the outer side of the adjustment seat, a fixed gas seat is fixedly installed on the outer side of the laser head, and a rotating seat is rotatably installed on the lower end of the fixed gas seat, and a gas delivery pipe is connected between the smoke conveying assembly and the fixed gas seat, and a blowing pipe for blowing condensed metal is connected to the rotating seat. The fully automatic laser cutting equipment for sheet metal processing can absorb and condense the vaporized metal in the generated smoke during the cutting process, which is convenient for subsequent recycling, and can reduce the adhesion between the dripping waste and the support plate through the solidified particles, thereby effectively providing a subsequent cleaning effect of the waste on the support plate.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting equipment, and in particular to a fully automatic laser cutting equipment for sheet metal processing. Background Art

[0002] During the sheet metal processing process, the whole sheet metal needs to be cut and shaped according to specific production needs. Although traditional sheet metal cutting methods, such as flame cutting and plasma cutting, have met the needs of industrial production for a certain period of time, they have many obvious limitations. Therefore, fully automatic laser cutting equipment is needed to improve production efficiency.

[0003] The prior art (application number: 202311193698.9, Chinese patent with application date of 2023-09-15) discloses a sheet metal laser cutting machine with automatic cleaning function, including a shell, on which a laser cutter is arranged, a support plate is fixedly installed in the shell, a plurality of groups of triangular support blocks with intervals are fixedly installed on the support plate, and a plurality of groups of rotating shafts alternately distributed with the support blocks are rotatably installed on the support plate. It is intended to solve the technical problem that the support plate cannot be automatically cleaned in the prior art, resulting in a large amount of metal residues accumulating on the support plate, affecting the support effect. Compared with the prior art, the beneficial effects of the present invention are as follows: it is capable of quickly cooling the fallen molten metal, reducing the possibility of the molten metal solidifying on the support plate and the support plate, and can scrape off the incompletely solidified molten metal on the upper surface and the side of the support plate, thereby realizing the automatic protection of the support plate and the support plate and the automatic cleaning of the molten metal; The prior art (application number: 202410884580.9, Chinese patent with application date of 2024-07-03) discloses a laser cutting device for precision sheet metal machinery manufacturing, which relates to the technical field of laser cutting devices, including: a machine tool; the upper end surface of the machine tool is symmetrically installed with two slide rails, and each slide rail is slidably connected to a sliding seat, a moving mechanism is provided on the upper part of the two sliding seats, and a laser mounting part is provided on the upper part of the moving mechanism. The present invention provides a separation mesh plate inside the material collection frame, so that the cut metal sheet and the welding slag can be automatically separated, making it more convenient to take the metal sheet; and through the setting of the guide hopper, the convenience of cleaning the welding slag is improved, and the problem that the traditional laser cutting device will mix the cut metal sheet with the welding slag after cutting the metal sheet, making it very troublesome to take the metal sheet, and the traditional laser cutting device lacks an effective material guide structure inside, thereby reducing the convenience of cleaning the welding slag; Although the existing laser cutting equipment can clean the metal residues attached to the support plate, its cleaning method is single, so that some metal impurities will re-attach and remain on the cleaning structure, thereby reducing the long-term cleaning effect. At the same time, the existing laser cutting equipment cannot reduce the bonding degree between the support plate and the residual metal scraps during use, making subsequent cleaning work more difficult and having certain usage defects. Summary of the invention

[0004] The purpose of the present invention is to provide a fully automatic laser cutting equipment for sheet metal processing, so as to solve the problem raised by the above background technology that the cleaning method of the fully automatic laser cutting equipment for sheet metal processing on the market is single, so that some metal impurities will adhere to the cleaning structure again, thereby reducing the long-term cleaning effect. At the same time, the existing laser cutting equipment cannot reduce the bonding degree between the support plate and the residual metal scraps during use, making subsequent cleaning work more difficult.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fully automatic laser cutting device for sheet metal processing, comprising a frame placed on the floor of a workshop, an adjustment seat movably mounted on the frame, a laser head mounted on the adjustment seat, a fixing frame fixedly mounted on the frame, and a support plate for supporting the sheet metal part arranged on the fixing frame; A smoke delivery assembly is installed on the outer side of the adjustment seat, a fixed gas seat is fixedly installed on the outer side of the laser head, and a rotating seat is rotatably installed on the lower end of the fixed gas seat, and a gas delivery pipe is connected between the smoke delivery assembly and the fixed gas seat, and a blowing pipe for blowing condensed metal is connected to the rotating seat, and a direction adjustment assembly for adjusting the direction of the blowing pipe is also installed on the rotating seat; A servo motor is fixedly mounted on the fixed frame, a driving shaft is fixedly mounted on the output end of the servo motor, a cam is fixedly mounted on the outer side of the driving shaft, a movable frame is lifted and mounted on the inner side of the fixed frame, and the support plate is evenly fixedly mounted on the movable frame.

[0006] Preferably, a funnel-shaped guide plate is fixedly mounted on the frame, and the guide plate and the support plate are arranged correspondingly up and down, and a collecting trough is also drawably arranged below the frame, and the guide plate and the collecting trough are arranged correspondingly up and down.

[0007] Preferably, the smoke conveying assembly includes a fan fixedly installed on the outside of the adjustment seat, and the air inlet end of the fan is fixedly connected to the smoke pipe, and the air outlet end of the fan is fixedly connected to the heat exchange tube, and at the same time, the heat exchange tube is fixedly connected to a semiconductor refrigeration plate, and the volatiles in the smoke are solidified into particles after heat exchange inside the heat exchange tube.

[0008] Preferably, the direction adjustment component includes a fixed cylinder fixedly mounted on the rotating seat, and the inner side of the fixed cylinder is elastically connected to a telescopic frame through a spring, and a roller is rotatably mounted on the lower end of the telescopic frame, and the roller is attached to the upper surface of the sheet metal under the elastic force of the spring, and the laser head drives the roller to roll on the surface of the sheet metal during movement. When the laser head adjusts its direction, the roller drives the rotating seat to rotate and adjust through the fixed cylinder and the telescopic frame.

[0009] Preferably, the fixed air seat and the rotating seat are sealed and connected, and the air delivery pipe is connected to the blowing pipe through the fixed air seat and the rotating seat.

[0010] Preferably, the blowing pipe and the telescopic frame are fixedly connected, and when the rotating seat rotates, the blowing pipe is driven by the telescopic frame to adjust its direction, and the lower end of the blowing pipe is directed toward the support plate below the end of the laser head, and the blowing pipe can blow the condensed metal particles to adhere to the outer side of the support plate.

[0011] Preferably, the movable frame is evenly provided with supporting plates, and the cam and the supporting plates are arranged in correspondence with each other up and down, and the cam pushes the supporting plates and the movable frame to be raised and lowered during the rotation process.

[0012] Preferably, multiple groups of scrapers are elastically rotatably mounted on the fixed frame, and each group of scrapers has two scrapers symmetrically arranged about the support plate, and the upper ends of the scrapers are arranged in an inclined surface. At the same time, the upper ends of the scrapers are in contact with both sides of the support plate, and when the movable frame drives the support plate to move downward, the scrapers automatically scrape off impurities attached to both sides of the support plate.

[0013] Preferably, a first magnetic block is embedded and installed on one side of the lower part of the scraper close to the support plate, and a second magnetic block is fixedly installed on the lower end of the support plate, and the magnetic poles of the opposite surfaces of the first magnetic block and the second magnetic block are the same. At the same time, when the support plate drives the second magnetic block to move downward and close to the first magnetic block, the scraper is driven to rotate elastically.

[0014] Compared with the prior art, the invention has the following beneficial effects: the fully automatic laser cutting equipment for sheet metal processing can absorb and condense the gasified metal in the generated fume during the cutting process, which is convenient for subsequent recycling, and can reduce the adhesion between the dripping waste and the support plate through the solidified particles, thereby effectively providing a subsequent cleaning effect for the waste on the support plate, the specific contents are as follows; 1. A fan, a smoke pipe and a heat exchange pipe are provided. During the cutting process, the fan can be started to extract the generated smoke through the smoke pipe and transport the smoke to the heat exchange pipe. At this time, the smoke will be cooled in the heat exchange pipe, so that the volatile substances such as the vaporized metal in the smoke can be quickly solidified into particles, which is convenient for subsequent recycling and reuse; 2. A blowing pipe is provided, through which the solidified particles can be blown to the outside of the support plate at the corresponding position, thereby reducing the bonding degree between the dripping waste and the support plate, making it easier to clean the solidified waste on the support plate later; Furthermore, a fixed cylinder, a telescopic frame, a spring and a roller are provided. Through the elastic expansion and contraction adjustment of the fixed cylinder and the telescopic frame, the roller can always fit the surface of the sheet metal under the elastic force of the spring. As the laser head moves, the roller can be driven to roll, so that the rolling direction can be adjusted by the lateral friction force exerted on the roller, and then the rotating seat is driven to rotate, so as to achieve the purpose of adjusting the angle of the blowing pipe, so that the blowing pipe can blow the solidified small particles to the outside of the corresponding support plate through the cutting seam for attachment, thereby reducing the bonding degree between the waste material and the support plate.

[0015] 3. A cam, a support plate and a scraper are provided. When the cutting is completed, the servo motor is controlled to drive the driving shaft to drive the cam to rotate, so that the cam can push the support plate to drive the movable frame to move up and down. At this time, the movable frame can drive the support plate to shake, thereby promoting the waste attached to the outside of the support plate to fall off. As the support plate is raised and lowered, the scraper can automatically scrape off the waste attached to both sides of the support plate. At the same time, when the first magnetic block and the second magnetic block are close to each other, the scraper will shake elastically, thereby avoiding impurities attached to the outside of the scraper and affecting the subsequent scraping effect. At the same time, the scraper can knock on the support plate after it is reset, and the cleaning effect of the waste on the outside of the support plate is further improved through the vibration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the adjustment base and the laser head of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the installation structure of the fixed air seat and the rotating seat of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the fixed air seat of the present invention; Figure 6 This is a schematic diagram of the cam installation structure of the present invention; Figure 7 This is a schematic diagram of the support plate installation structure of the present invention; Figure 8 This is a schematic diagram of the scraper installation structure of the present invention; Fig. 9 It is a schematic diagram of the installation structure of the first magnetic block and the second magnetic block of the present invention.

[0017] In the figure: 1. frame; 2. adjustment seat; 3. laser head; 4. fixed frame; 5. support plate; 6. guide plate; 7. collecting trough; 8. fan; 9. smoking pipe; 10. fixed gas seat; 11. rotating seat; 12. heat exchange tube; 1201, semiconductor refrigeration plate; 1202, gas pipe; 13. fixed cylinder; 14. telescopic frame; 15. spring; 16. roller; 17. blowing pipe; 18. driving shaft; 19. cam; 20. servo motor; 21. movable frame; 22. support plate; 23. scraper; 24. first magnetic block; 25. second magnetic block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: The existing fully automatic laser cutting equipment for sheet metal processing is not convenient for effectively recovering and reusing the volatile substances such as metal in the smoke generated during the cutting process. In order to solve this technical problem, this embodiment discloses the following technical content, please refer to Figure 1-Figure 5 As shown; a fully automatic laser cutting equipment for sheet metal processing, including a frame 1 placed on the workshop floor, an adjusting seat 2 is movably installed on the frame 1, and a laser head 3 is installed on the adjusting seat 2, and a fixing frame 4 is also fixedly installed on the frame 1, and a supporting plate 5 for supporting the sheet metal is provided on the fixing frame 4; a smoke conveying assembly is installed on the outer side of the adjusting seat 2, a fixed gas seat 10 is fixedly installed on the outer side of the laser head 3, and a rotating seat 11 is rotatably installed on the lower end of the fixed gas seat 10, and a gas delivery pipe 1202 is connected between the smoke conveying assembly and the fixed gas seat 10, and a blowing pipe 17 for blowing condensed metal is connected to the rotating seat 11, and a direction adjustment assembly for adjusting the direction of the blowing pipe 17 is also installed on the rotating seat 11.

[0020] The smoke conveying component includes a fan 8 fixedly installed on the outside of the adjustment seat 2, and the air inlet end of the fan 8 is fixedly connected to the smoking pipe 9, and the air outlet end of the fan 8 is fixedly connected to the heat exchange tube 12, and the heat exchange tube 12 is fixedly connected to the semiconductor refrigeration plate 1201, and the volatile matter in the smoke is solidified into particles after heat exchange inside the heat exchange tube 12.

[0021] The direction adjustment component includes a fixed cylinder 13 fixedly mounted on the rotating seat 11, and the inner side of the fixed cylinder 13 is elastically telescopically connected to the telescopic frame 14 through a spring 15, and a roller 16 is rotatably mounted on the lower end of the telescopic frame 14. At the same time, the roller 16 is attached to the upper surface of the sheet metal under the elastic force of the spring 15, and the roller 16 is driven to roll on the surface of the sheet metal during the movement of the laser head 3. When the direction of the laser head 3 is adjusted, the roller 16 drives the rotating seat 11 to rotate and adjust through the fixed cylinder 13 and the telescopic frame 14.

[0022] The fixed gas seat 10 and the rotating seat 11 are sealed and connected, and the air supply pipe 1202 is connected to the blowing pipe 17 through the fixed gas seat 10 and the rotating seat 11. The blowing pipe 17 and the telescopic frame 14 are fixedly connected, and when the rotating seat 11 rotates, the blowing pipe 17 is driven by the telescopic frame 14 to adjust its direction, and the lower end of the blowing pipe 17 is facing the support plate 5 below the end of the laser head 3, and the blowing pipe 17 can blow the condensed metal particles to adhere to the outer side of the support plate 5.

[0023] Through the above technical solution, when it is necessary to cut the sheet metal, the sheet metal is placed on the support plate 5, and the adjustment seat 2 is subsequently controlled to drive the laser head 3 to move downward. At this time, the laser head 3 will drive the fixed air seat 10 and the rotating seat 11 to move downward, so that the roller 16 fits the surface of the sheet metal. At the same time, the fixed cylinder 13 and the telescopic frame 14 are elastically extended to ensure the fit between the roller 16 and the sheet metal. At this time, the laser head 3 is controlled to cut the sheet metal, and the fan 8 is turned on at the same time, so that the fan 8 can extract the smoke generated by the cutting through the smoking pipe 9 and transport the smoke to the heat exchange tube 12. The heat exchange tube 12 can quickly cool the smoke through the semiconductor refrigeration sheet 1201, so that the volatiles in the smoke are The waste is solidified into particles and transported to the fixed gas seat 10 through the gas pipe 1202, and then discharged through the blowing pipe 17, and the discharged gas blows the particles to the support plate 5 at the existing position through the cutting powder, so that some particles adhere to the outside of the support plate 5, thereby reducing the bonding degree between the dripping waste and the support plate 5, which is convenient for the subsequent scraping of the solidified waste. At the same time, with the movement of the laser head 3, the roller 16 can roll on the outside of the sheet metal, and the lateral friction force of the roller 16 can make the roller 16 drive the rotating seat 11 to automatically rotate and adjust, thereby ensuring that the blowing pipe 17 can always face the cutting seam, ensuring that the recovered particles can be blown to the support plate 5 at the existing position.

[0024] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above embodiment 1. The existing fully automatic laser cutting equipment for sheet metal processing has a single way of cleaning waste, which makes it impossible to fully clean the waste, thereby affecting the subsequent stable support of the sheet metal parts. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 6-Figure 9As shown; a servo motor 20 is fixedly mounted on the fixed frame 4, and a driving shaft 18 is fixedly mounted on the output end of the servo motor 20, and a cam 19 is fixedly mounted on the outer side of the driving shaft 18, and a movable frame 21 is lifted and lowered on the inner side of the fixed frame 4, and the support plate 5 is evenly fixedly mounted on the movable frame 21, and a support plate 22 is evenly arranged on the movable frame 21, and the positions of the cam 19 and the support plate 22 are correspondingly arranged up and down, and the cam 19 pushes the support plate 22 and the movable frame 21 to be lifted and lowered during rotation.

[0025] A plurality of scrapers 23 are elastically rotatably mounted on the fixed frame 4, and each group of scrapers 23 has two scrapers 23 symmetrically arranged about the support plate 5, and the upper ends of the scrapers 23 are arranged in an inclined surface, and at the same time, the upper ends of the scrapers 23 are in contact with the two sides of the support plate 5, and when the movable frame 21 drives the support plate 5 to move downward, the scrapers 23 automatically scrape off the impurities attached to the two sides of the support plate 5, and a first magnetic block 24 is embedded and mounted on the lower part of the scraper 23 close to the side of the support plate 5, and a second magnetic block 25 is fixedly mounted on the lower end of the support plate 5, and the magnetic poles of the opposite surfaces of the first magnetic block 24 and the second magnetic block 25 are the same, and at the same time, when the support plate 5 drives the second magnetic block 25 to move downward close to the first magnetic block 24, the scraper 23 is driven to rotate elastically, and a funnel-shaped guide plate 6 is fixedly mounted on the frame 1, and the guide plate 6 and the support plate 5 are arranged correspondingly up and down, and a collecting trough 7 is also drawn and arranged at the bottom of the frame 1, and the guide plate 6 and the collecting trough 7 are arranged correspondingly up and down.

[0026] By adopting the above technical solution, when the cutting is completed, the servo motor 20 is controlled to drive the driving shaft 18 to drive the cam 19 to rotate, so that the cam 19 can push the support plate 22 to drive the movable frame 21 to be raised and lowered. At this time, the movable frame 21 can drive the support plate 5 to shake, thereby promoting the waste attached to the outside of the support plate 5 to fall off, and with the lifting and lowering adjustment of the support plate 5, the scraper 23 can automatically scrape off the waste attached to both sides of the support plate 5. At the same time, when the first magnetic block 24 and the second magnetic block 25 are close to each other, the scraper 23 will be elastically shaken under the action of magnetic force and elastic force, so that the waste on the outside of the scraper 23 can be shaken off, thereby avoiding impurities attached to the outside of the scraper 23 and affecting the subsequent scraping effect. At the same time, the scraper 23 can knock on the support plate 5 after it is reset, and the cleaning effect of the waste on the outside of the support plate 5 is further improved through the vibration effect.

[0027] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic laser cutting device for sheet metal processing, comprising a frame (1) placed on a workshop floor, an adjustment seat (2) being movably mounted on the frame (1), a laser head (3) being mounted on the adjustment seat (2), and a fixing frame (4) being fixedly mounted on the frame (1), and a support plate (5) for supporting a sheet metal part being arranged on the fixing frame (4); It is characterized in that A smoke conveying assembly is installed on the outer side of the adjustment seat (2), a fixed gas seat (10) is fixedly installed on the outer side of the laser head (3), and a rotating seat (11) is rotatably installed on the lower end of the fixed gas seat (10), and a gas delivery pipe (1202) is connected between the smoke conveying assembly and the fixed gas seat (10), and a blowing pipe (17) for blowing condensed metal is connected to the rotating seat (11), and a direction adjustment assembly for adjusting the direction of the blowing pipe (17) is also installed on the rotating seat (11); A servo motor (20) is fixedly mounted on the fixed frame (4), a drive shaft (18) is fixedly mounted on the output end of the servo motor (20), and a cam (19) is fixedly mounted on the outside of the drive shaft (18), while a movable frame (21) is lifted and mounted on the inside of the fixed frame (4), and the support plate (5) is evenly fixedly mounted on the movable frame (21).

2. The fully automatic laser cutting equipment for sheet metal processing according to claim 1, characterized in that: A funnel-shaped guide plate (6) is fixedly mounted on the frame (1), and the guide plate (6) and the support plate (5) are arranged in correspondence with each other up and down. A collecting trough (7) is also drawn out and arranged below the frame (1), and the guide plate (6) and the collecting trough (7) are arranged in correspondence with each other up and down.

3. The fully automatic laser cutting equipment for sheet metal processing according to claim 1, characterized in that: The smoke conveying assembly comprises a fan (8) fixedly mounted on the outside of the adjustment seat (2), the air inlet end of the fan (8) being fixedly connected to a smoke pipe (9), and the air outlet end of the fan (8) being fixedly connected to a heat exchange tube (12), while a semiconductor refrigeration sheet (1201) is fixedly connected to the heat exchange tube (12), and volatiles in the smoke are solidified into particles after heat exchange on the inside of the heat exchange tube (12).

4. The fully automatic laser cutting equipment for sheet metal processing according to claim 1, characterized in that: The direction adjustment component comprises a fixed cylinder (13) fixedly mounted on a rotating seat (11), and the inner side of the fixed cylinder (13) is elastically and telescopically connected to a telescopic frame (14) via a spring (15), and a roller (16) is rotatably mounted on the lower end of the telescopic frame (14), and the roller (16) is attached to the upper surface of the sheet metal part under the elastic force of the spring (15), and the laser head (3) drives the roller (16) to roll on the surface of the sheet metal part during movement, and when the laser head (3) is adjusted in direction, the roller (16) drives the rotating seat (11) to rotate and adjust through the fixed cylinder (13) and the telescopic frame (14).

5. The fully automatic laser cutting equipment for sheet metal processing according to claim 1, characterized in that: The fixed gas seat (10) and the rotating seat (11) are sealed and connected, and the gas delivery pipe (1202) is connected to the blowing pipe (17) through the fixed gas seat (10) and the rotating seat (11).

6. The fully automatic laser cutting equipment for sheet metal processing according to claim 4, characterized in that: The blowing pipe (17) and the telescopic frame (14) are fixedly connected, and when the rotating seat (11) rotates, the blowing pipe (17) is driven by the telescopic frame (14) to adjust its direction, and the lower end of the blowing pipe (17) faces the position of the support plate (5) below the end of the laser head (3), and the blowing pipe (17) can blow the condensed metal particles to adhere to the outer side of the support plate (5).

7. The fully automatic laser cutting equipment for sheet metal processing according to claim 1, characterized in that: The movable frame (21) is evenly provided with supporting plates (22), and the cam (19) and the supporting plates (22) are arranged in a corresponding manner up and down, and the cam (19) pushes the supporting plates (22) and the movable frame (21) to be raised and lowered during rotation.

8. The fully automatic laser cutting equipment for sheet metal processing according to claim 1, characterized in that: A plurality of groups of scrapers (23) are elastically rotatably mounted on the fixed frame (4), and each group of scrapers (23) has two scrapers symmetrically arranged with respect to the support plate (5), and the upper ends of the scrapers (23) are arranged in an inclined surface. At the same time, the upper ends of the scrapers (23) are in contact with both sides of the support plate (5), and when the movable frame (21) drives the support plate (5) to move downward, the scrapers (23) automatically scrape away impurities attached to both sides of the support plate (5).

9. The fully automatic laser cutting equipment for sheet metal processing according to claim 8, characterized in that: A first magnetic block (24) is embedded and installed on one side of the lower part of the scraper (23) close to the support plate (5), and a second magnetic block (25) is fixedly installed on the lower end of the support plate (5), and the magnetic poles of the opposing surfaces of the first magnetic block (24) and the second magnetic block (25) are the same, and the support plate (5) drives the second magnetic block (25) to move downward close to the first magnetic block (24), thereby driving the scraper (23) to rotate elastically.

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