A turning device for machining the edge of a stainless steel flange

Abstract

The application belongs to the technical field of flange machining, in particular to a turning equipment for stainless steel flange edge machining, which comprises a lathe, a main machine installed on one side of the top end of the lathe, a rotating disc fixed on the output shaft end of the main machine, a plurality of clamping teeth arranged in the middle of one side of the rotating disc, a lifting device installed on one side of the top end of the lathe, a plurality of positioning columns fixed on one side of the rotating disc, an electric telescopic rod arranged in the lifting device, a turning motor fixed on the end of the electric telescopic rod through a connecting rod, a turning cutter installed on the rotating shaft end of the turning motor, and a collecting structure arranged in the lathe; a protective cover is arranged outside the turning cutter, a communication structure of a telescopic pipe and a sleeve pipe is adopted between the protective cover and a filter box, a negative pressure is generated by cooperating with a negative pressure fan, metal scraps can be sucked into the filter box through the protective cover, the telescopic pipe and the sleeve pipe in real time during the turning process, and the metal scraps are collected by two-stage filtration of a mesh plate and filter cloth, so that the scraps are prevented from splashing and polluting the working environment.

Description

Technical Field

[0001] This invention belongs to the field of flange processing technology, specifically a turning device for processing the edge of a stainless steel flange. Background Technology

[0002] Flanges are basic components widely used in pipeline connections. Stainless steel flanges are widely used in petrochemical, shipbuilding, food and pharmaceutical fields due to their good corrosion resistance and mechanical properties. After stainless steel flanges are initially formed by forging or casting, their edges usually have problems such as burrs, flash and dimensional deviations, which need to be machined to ensure the sealing surface accuracy and assembly quality of the flange.

[0003] An invention patent with publication number CN120460748B discloses a stainless steel flange turning device, including a base frame. A turning structure is located at the upper end of the base frame, and the turning structure includes a lifting plate positioned at the upper end of the base frame. The surface of the lifting plate is equipped with an end-face turning tool, an external turning tool, and a grooving tool. A clamping structure is located at one end of the turning structure. By setting an adjustment structure, after a flange is turned, the expansion plate moves towards the inner wall of the flange's center, thus fixing the flange in place. Then, a transfer clamp moves to enclose the flange. At this point, a motor located on one side of the transfer clamp is activated to hold the flange. Subsequently, during the reciprocating motion of the telescopic cylinder, the flange is transferred away from the turning structure by the transfer clamp, thus achieving automatic removal of the turned flange. Furthermore, through the reciprocating operation of the telescopic cylinder, the flange removal process can be performed continuously.

[0004] Existing turning equipment uses a cutting tool to turn the outer edge of the flange to create a chamfer. However, this process generates a large amount of metal chips, which may fly outwards or be rolled back into the turning position, resulting in a poor turning effect on the flange edge.

[0005] Therefore, the present invention provides a turning device for machining the edge of a stainless steel flange. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a turning equipment for processing the edge of a stainless steel flange, including a lathe, a main unit installed on one side of the top of the lathe, a turntable fixed to the output shaft end of the main unit, a plurality of cleats provided in the middle of one side of the turntable, a flange body being installed on the side of the turntable near the cleats, a lifting device installed on the top of the lathe on one side of the main unit, a plurality of positioning pins fixed to one side of the turntable, the positioning pins being able to be inserted into holes on the outside of the flange body, an electric telescopic rod provided inside the lifting device, a turning motor fixed to the end of the electric telescopic rod via a connecting rod, a turning tool head installed at the shaft end of the turning motor, and a collecting structure provided inside the lathe; The collection structure includes a connecting frame fixed to one side of the turning motor, a protective cover fixed to the bottom of the connecting frame, the protective cover being fitted over the outside of the turning tool disc, a filter box being provided below the protective cover, a separation component being provided inside the filter box, and a negative pressure fan being installed at the bottom of the filter box.

[0008] Preferably, the separation component includes a mesh plate fixed inside the filter box, the surface of the mesh plate is corrugated, one side of the mesh plate is inclined downward, and the surface of the mesh plate has a plurality of filter holes.

[0009] Preferably, a storage box is fixed to one side of the filter box, and an opening is provided on one side of the filter box. The one side of the filter box is connected to the interior of the storage box through the opening, and the lower side of the mesh plate faces the opening of the filter box.

[0010] Preferably, the top of the screen is provided with a toothed scraper, the bottom shape of which matches the top shape of the screen. Slide grooves are provided on both sides of the filter box. Slide columns are fixed to both sides of the toothed scraper, and these columns are slidably connected inside the slide grooves. A pull rope is provided inside the slide grooves and is fixedly connected to the slide columns. A winding motor is installed on the side of the filter box near the lower end of the screen. A second winding reel is fixed to the end of the shaft of the winding motor. One end of the pull rope is wound inside the second winding reel. A torsion spring is rotatably connected to the side of the filter box away from the second winding reel. The other end of the pull rope is wound inside the torsion spring. A first winding reel is fixed to the outside of the shaft of the torsion spring, and the other end of the first winding reel is fixedly connected to the filter box.

[0011] Preferably, the toothed scraper has multiple sets of elastic plates fixed on the side near the torsion spring. One end of each elastic plate has a protrusion, the height of which matches the depth of the filter holes in the mesh plate, and both sides of the protrusion are arc-shaped.

[0012] Preferably, a plurality of support bars are fixed at the bottom of the filter box, and the top of the support bars can be used to place filter cloth.

[0013] Preferably, the protective cover has an opening on the side near the flange body, and a baffle is provided at the top of the protective cover.

[0014] Preferably, a telescopic tube is fixed to the bottom end of the protective cover, and a sleeve is fixed to the top end of the filter box, with the telescopic tube inserted inside the top end of the sleeve.

[0015] Preferably, the flange body is placed on one side of the turntable, so that the center hole of the flange body is fitted onto the outside of multiple positioning posts on the turntable, and the flange body is positioned by the multiple positioning posts. Multiple teeth on the drive turntable move radially outward, causing them to press against the inner wall of the flange body and fix the flange body in place. Start the turning motor to drive the turning cutter head to rotate. At the same time, the lifting device drives the turning motor and the turning cutter head to move downward, so that the rotating turning cutter head contacts the edge of the flange body and turns the edge of the flange body. During the turning process, the main machine drives the turntable to rotate, and the turntable drives the flange body to rotate through the positioning pin, so that the turning tool head turns the outer edge of the flange body; After the turning tool head turns the outer edge of the flange body to the preset depth, the lifting device drives the turning motor and the turning tool head to rise, remove the flange body, flip it over and reinstall it on the turntable, and repeat the above steps to turn the other side. During the turning process, the lifting device drives the protective cover to rise and fall synchronously through the connecting frame. The protective cover extends and retracts inside the sleeve through the telescopic tube to maintain the connection between the protective cover and the filter box. The negative pressure fan is started to generate negative pressure inside the protective cover. The metal chips generated during turning enter the protective cover through the notch. After being blocked by the baffle, they are transported to the filter box through the telescopic tube and the sleeve, and are filtered out in sequence by the mesh plate and filter cloth.

[0016] Preferably, the mesh plate is inclined inside the filter box, and a storage box is provided on one side of the mesh plate, so that metal debris slides down the surface of the mesh plate into the storage box. Start the winding motor to drive the second winding reel to rotate. The second winding reel winds up the pull rope. The pull rope pulls the toothed scraper to slide along the surface of the mesh, pushing the metal scraps accumulated on the surface of the mesh into the storage box. At the same time, the other end of the pull rope is unwound from inside the first winding reel and the torsion spring is tightened. After cleaning is completed, the winding motor stops rotating, and the spring force drives the first winding reel to rotate in the opposite direction. The first winding reel winds the pull rope in the opposite direction, which drives the toothed scraper to automatically reset. When the toothed scraper moves, it drives the elastic sheet to move synchronously. The protrusions on the elastic sheet press against the surface of the mesh plate. When the protrusions move to the filter hole position of the mesh plate, the elastic force of the elastic sheet drives the protrusions to extend into the filter hole, and ejects the metal debris stuck inside the filter hole downwards.

[0017] The beneficial effects of this invention are as follows: 1. The stainless steel flange edge processing turning equipment of the present invention, by setting a protective cover outside the turning cutter head, and adopting a telescopic pipe and sleeve connection structure between the protective cover and the filter box, and with the negative pressure generated by the negative pressure fan, can draw metal chips into the filter box in real time through the protective cover, telescopic pipe and sleeve during the turning process, and collect them through two-stage filtration by the mesh plate and filter cloth, effectively preventing chip splashing and pollution of the working environment. At the same time, the protective cover rises and falls synchronously with the turning motor, and the connectivity of the negative pressure channel can be maintained without additional drive.

[0018] 2. The stainless steel flange edge processing turning equipment of the present invention uses a toothed scraper on the surface of the screen plate inside the filter box. The toothed scraper is driven by a winding motor, a pull rope and a torsion spring to reciprocate along the surface of the screen plate, which can push the metal debris accumulated on the screen plate into the collection box. The elastic sheet and protrusion on the toothed scraper can penetrate into the filter hole of the screen plate and pop out the debris stuck in the filter hole, thereby effectively preventing the screen plate from clogging, ensuring the continuous and stable filtration efficiency, and reducing the frequency of manual cleaning and maintenance costs. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the insertion of the telescopic tube and sleeve in this invention; Figure 3 This is a schematic diagram of the internal structure of the protective cover in this invention; Figure 4 This is a schematic diagram of the internal structure of the filter box in this invention; Figure 5 This is a schematic diagram of the toothed scraper structure in this invention; Figure 6 This is a schematic diagram of the elastic sheet structure in this invention; Figure 7 This is a schematic diagram of the support strip structure in this invention; In the diagram: 1. Lathe; 11. Main unit; 111. Turntable; 112. Clamping gear; 113. Positioning pin; 12. Lifting device; 121. Turning motor; 122. Turning tool disc; 13. Protective cover; 131. Connecting frame; 132. Sleeve; 133. Telescopic tube; 134. Notch; 135. Baffle; 14. Filter box; 141. Negative pressure fan; 142. Storage box; 143. Mesh plate; 144. Toothed scraper; 145. Pull rope; 1451. First winding reel; 1452. Torsion spring; 1453. Second winding reel; 1454. Winding motor; 146. Elastic sheet; 1461. Protrusion; 147. Support bar; 148. Filter cloth; 2. Flange body. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 7 As shown, a turning device for processing the edge of a stainless steel flange according to an embodiment of the present invention includes a lathe 1. A main unit 11 is installed on one side of the top of the lathe 1. A turntable 111 is fixed to the output shaft end of the main unit 11. A plurality of cleats 112 are provided in the middle of one side of the turntable 111. A flange body 2 can be installed on the side of the turntable 111 near the cleats 112. A lifting device 12 is installed on the top of the lathe 1 on one side of the main unit 11. A plurality of positioning pins 113 are fixed on one side of the turntable 111. The positioning pins 113 can be inserted into holes on the outside of the flange body 2. An electric telescopic rod is provided inside the lifting device 12. A turning motor 121 is fixed to the end of the electric telescopic rod through a connecting rod. A turning tool disc 122 is installed at the end of the shaft of the turning motor 121. A collecting structure is provided inside the lathe 1. The collection structure includes a connecting frame 131 fixed to one side of the turning motor 121. A protective cover 13 is fixed to the bottom of the connecting frame 131. The protective cover 13 is fitted over the outside of the turning tool disc 122. A filter box 14 is provided below the protective cover 13. A separation component is provided inside the filter box 14. A negative pressure fan 141 is installed at the bottom of the filter box 14.

[0023] The separation assembly includes a mesh plate 143 fixed inside the filter box 14. The surface of the mesh plate 143 is corrugated, one side of the mesh plate 143 is inclined downward, and multiple filter holes are formed on the surface of the mesh plate 143.

[0024] Multiple support bars 147 are fixed at the bottom inside the filter box 14, and filter cloth 148 can be placed at the top of the support bars 147.

[0025] The protective cover 13 has an opening 134 on the side near the flange body 2, and a baffle 135 is provided on the top of the protective cover 13.

[0026] The bottom of the protective cover 13 is fixed with a telescopic tube 133, and the top of the filter box 14 is fixed with a sleeve 132. The telescopic tube 133 is inserted into the top of the sleeve 132.

[0027] During the processing of stainless steel flanges, the edges of the flanges need to be chamfered. The flange body 2 is placed on one side of the turntable 111. Initially, the retaining teeth 112 are positioned close to the innermost side of the turntable 111. At the same time, the holes of the flange body 2 are fitted onto the outside of the positioning pins 113. The flange body 2 can be positioned by multiple positioning pins 113. Then, the internal retaining teeth 112 are activated to move outward. The internal retaining teeth 112 can fix the inside of the flange body 2. Then, the turning motor 121 is started to drive the turning cutter head 122 to rotate. During the rotation, the electric telescopic rod inside the lifting device 12 drives the turning motor 121 to move downward through the connecting rod at the end. The turning motor 121 drives the turning cutter head 122 to rotate. The cutting head 122 moves downward and contacts the edge of the flange body 2 when it moves downward. When it contacts the edge of the flange body 2, the cutting head 122 can cut the edge of the flange body 2. At the same time, the host machine 11 drives the turntable 111 to rotate. The turntable 111 drives the flange body 2 to rotate through the positioning pin 113. During the rotation, the cutting head 122 can cut the outer side of the flange body 2 synchronously. When the cutting head 122 cuts the outer side of the flange body 2 to the preset depth, the lifting device 12 drives the cutting motor 121 and the cutting head 122 to rise. Then the flange body 2 is removed and the other side is installed on one side of the turntable 111. The other side is cut in the same way as above. After the cutting is completed, the flange body 2 can be removed. During the lifting and lowering of the turning tool head 122, the protective cover 13 is lifted and lowered via the connecting frame 131. The protective cover 13 drives the telescopic tube 133 to extend and retract inside the sleeve 132, thereby maintaining the communication between the protective cover 13 and the filter box 14. During the turning process, the edge of the flange body 2 enters the interior of the protective cover 13 through the notch 134 and contacts the turning tool head 122. The turning tool head 122 generates metal chips during turning. The baffle 135 can block the flying metal chips and allow them to enter the interior of the protective cover 13. At the same time, the negative pressure fan 141 is started to extract the air from the interior of the filter box 14. The air creates a negative pressure inside the filter box 14, sleeve 132, telescopic tube 133, and protective cover 13. The negative pressure draws in metal debris, which is then fed into the telescopic tube 133 and sleeve 132 through the protective cover 13. The metal debris then enters the interior of the filter box 14, where it is filtered out by the mesh plate 143. Some metal debris smaller than the filter holes will continue to move downwards and be filtered out a second time by the filter cloth 148. The filter cloth 148 can be replaced after use. The mesh plate 143 is corrugated to reduce clogging caused by the accumulation of metal debris.

[0028] like Figures 1 to 7As shown, a storage box 142 is fixed to one side of the filter box 14, and an opening is provided on one side of the filter box 14. The one side of the filter box 14 is connected to the interior of the storage box 142 through the opening, and the lower side of the mesh plate 143 faces the opening of the filter box 14.

[0029] A storage box 142 is fixed to one side of the filter box 14. An opening is provided on one side of the filter box 14. The one side of the filter box 14 is connected to the inside of the storage box 142 through the opening. The lower side of the mesh plate 143 faces the opening of the filter box 14.

[0030] The top of the screen plate 143 is provided with a toothed scraper 144, the bottom shape of which matches the top shape of the screen plate 143. Slide grooves are provided on both sides inside the filter box 14. Slide columns are fixed on both sides of the toothed scraper 144 and are slidably connected inside the slide grooves. A pull rope 145 is provided inside the slide grooves and is fixedly connected to the slide columns. A winding motor 1454 is installed on the side of the filter box 14 near the lower end of the screen plate 143. A second winding reel 1453 is fixed to the end of the shaft of the winding motor 1454. One end of the pull rope 145 is wound inside the second winding reel 1453. A torsion spring 1452 is rotatably connected on the side of the filter box 14 away from the second winding reel 1453. The other end of the pull rope 145 is wound inside the torsion spring 1452. A first winding reel 1451 is fixed outside the shaft of the torsion spring 1452 and the other end of the first winding reel 1451 is fixedly connected to the filter box 14.

[0031] A number of elastic plates 146 are fixed on the side of the toothed scraper 144 near the torsion spring 1452. One end of the elastic plate 146 is provided with a protrusion 1461. The height of the protrusion 1461 matches the filter hole depth of the mesh plate 143. Both sides of the protrusion 1461 are arc-shaped.

[0032] During the use of the mesh plate 143, metal debris will accumulate on the top of the mesh plate 143. After a large amount of accumulation, it will clog the filter holes. Therefore, a storage box 142 is set on one side of the filter box 14. The mesh plate 143 is tilted, and the debris will slide into the inside of the storage box 142. Some debris that doesn't slide off will accumulate. The winding motor 1454 is started, which drives the second winding reel 1453 to rotate. At this time, the second winding reel 1453 winds up the pull rope 145. During the winding process, the pull rope 145 pulls the toothed scraper 144 to slide on the surface of the mesh plate 143. The toothed scraper 144 can push the metal debris accumulated on the surface of the mesh plate 143 into the storage box 142. At the same time, the other end of the pull rope 145 is unwound from the inside of the first winding reel 1451 and the torsion spring 1452 is tightened. After cleaning, the winding motor 1454 stops rotating. The elastic force of the torsion spring 1452 drives the first winding reel 1451 to rotate in the opposite direction. The first winding reel 1451 winds up the pull rope 145 in the opposite direction, which can make the pull rope 145 drive the toothed scraper 144 to automatically reset. As the toothed scraper 144 moves, the elastic sheet 146 moves along with the toothed scraper 144, and the protrusion 1461 presses against the surface of the mesh plate 143. When the protrusion 1461 moves to the filter hole position of the mesh plate 143, the elastic force of the elastic sheet 146 drives the protrusion 1461 to extend into the filter hole, which can eject the metal debris stuck inside the filter hole downwards.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turning device for processing the edge of a stainless steel flange, characterized in that: The lathe includes a lathe (1), a main unit (11) is installed on one side of the top of the lathe (1), a turntable (111) is fixed at the output shaft end of the main unit (11), a plurality of cleats (112) are provided in the middle of one side of the turntable (111), a flange body (2) can be installed on the side of the turntable (111) near the cleats (112), a lifting device (12) is installed on the top of the lathe (1) on one side of the main unit (11), a plurality of positioning pins (113) are fixed on one side of the turntable (111), the positioning pins (113) can be inserted into the holes on the outside of the flange body (2), an electric telescopic rod is provided inside the lifting device (12), a turning motor (121) is fixed at the end of the electric telescopic rod through a connecting rod, a turning tool disc (122) is installed at the end of the shaft of the turning motor (121), and a collection structure is provided inside the lathe (1). The collection structure includes a connecting frame (131) fixed to one side of the turning motor (121), a protective cover (13) fixed to the bottom end of the connecting frame (131), the protective cover (13) being fitted over the outside of the turning tool disc (122), a filter box (14) being provided below the protective cover (13), a separation component being provided inside the filter box (14), and a negative pressure fan (141) being installed at the bottom end of the filter box (14).

2. The turning equipment for processing the edge of a stainless steel flange according to claim 1, characterized in that: The separation component includes a mesh plate (143) fixed inside the filter box (14). The surface of the mesh plate (143) is corrugated, one side of the mesh plate (143) is inclined downward, and multiple filter holes are opened on the surface of the mesh plate (143).

3. The turning equipment for processing the edge of a stainless steel flange according to claim 2, characterized in that: A storage box (142) is fixed to one side of the filter box (14). An opening is provided on one side of the filter box (14). The one side of the filter box (14) is connected to the interior of the storage box (142) through the opening. The lower side of the mesh plate (143) faces the opening of the filter box (14).

4. The turning equipment for processing the edge of a stainless steel flange according to claim 3, characterized in that: The top of the mesh plate (143) is provided with a toothed scraper (144), the bottom shape of which matches the top shape of the mesh plate (143). Sliding grooves are provided on both sides of the interior of the filter box (14). Sliding columns are fixed to both sides of the toothed scraper (144), and these columns are slidably connected to the inside of the sliding grooves. A pull rope (145) is provided inside the sliding grooves, and the pull rope (145) is fixedly connected to the sliding column. A winding motor (1454) is installed on the side of the filter box (14) near the lower end of the mesh plate (143). The shaft end of the winding motor (1454) is fixed with a second winding reel (1453). One end of the pull rope (145) is wound inside the second winding reel (1453). A torsion spring (1452) is rotatably connected to the side of the filter box (14) away from the second winding reel (1453). The other end of the pull rope (145) is wound inside the torsion spring (1452). A first winding reel (1451) is fixed outside the shaft of the torsion spring (1452). The other end of the first winding reel (1451) is fixedly connected to the filter box (14).

5. The turning equipment for processing the edge of a stainless steel flange according to claim 4, characterized in that: The toothed scraper (144) has multiple sets of elastic plates (146) fixed on one side near the torsion spring (1452). One end of the elastic plate (146) is provided with a protrusion (1461). The height of the protrusion (1461) matches the filter hole depth of the mesh plate (143). Both sides of the protrusion (1461) are arc-shaped.

6. The turning equipment for processing the edge of a stainless steel flange according to claim 2, characterized in that: The bottom of the filter box (14) is fixed with a plurality of support bars (147), and the top of the support bars (147) can hold filter cloth (148).

7. The turning equipment for processing the edge of a stainless steel flange according to claim 6, characterized in that: The protective cover (13) has an opening (134) on one side near the flange body (2), and a baffle (135) is provided at the top of the protective cover (13).

8. The turning equipment for processing the edge of a stainless steel flange according to claim 7, characterized in that: The bottom end of the protective cover (13) is fixed with a telescopic tube (133), and the top end of the filter box (14) is fixed with a sleeve (132). The telescopic tube (133) is inserted inside the top end of the sleeve (132).

9. A turning device for processing the edge of a stainless steel flange according to claim 8, characterized in that: Place the flange body (2) on one side of the turntable (111) so that the center hole of the flange body (2) is fitted onto the outside of multiple positioning pins (113) on the turntable (111), and position the flange body (2) through the multiple positioning pins (113); Multiple teeth (112) on the drive turntable (111) move radially outward, so that the multiple teeth (112) press against the inner wall of the flange body (2) to fix the flange body (2); Start the turning motor (121) to drive the turning cutter head (122) to rotate. At the same time, drive the turning motor (121) and the turning cutter head (122) to move downward through the lifting device (12) so that the rotating turning cutter head (122) contacts the edge of the flange body (2) and turns the edge of the flange body (2). During the turning process, the main machine (11) drives the turntable (111) to rotate, and the turntable (111) drives the flange body (2) to rotate through the positioning pin (113), so that the turning tool (122) turns the outer edge of the flange body (2); When the turning head (122) turns the outer edge of the flange body (2) to the preset depth, the lifting device (12) drives the turning motor (121) and the turning head (122) to rise, remove the flange body (2), flip it over and reinstall it on the turntable (111), and repeat the above steps to turn the other side; During the turning process, the lifting device (12) drives the protective cover (13) to rise and fall synchronously through the connecting frame (131). The protective cover (13) extends and retracts inside the sleeve (132) through the telescopic tube (133) to maintain the connection between the protective cover (13) and the filter box (14). The negative pressure fan (141) is started to generate negative pressure inside the protective cover (13). The metal chips generated during turning enter the protective cover (13) through the notch (134). After being blocked by the baffle (135), they are transported to the filter box (14) through the telescopic tube (133) and the sleeve (132) and filtered out in sequence by the mesh plate (143) and the filter cloth (148).

10. A turning device for processing the edge of a stainless steel flange according to claim 5, characterized in that: The mesh plate (143) is inclinedly set inside the filter box (14), and a storage box (142) is provided on one side of the mesh plate (143). Metal scraps slide down the surface of the mesh plate (143) into the storage box (142). The start of the winding motor (1454) drives the second winding reel (1453) to rotate. The second winding reel (1453) winds up the pull rope (145). The pull rope (145) pulls the toothed scraper (144) to slide along the surface of the mesh plate (143), pushing the metal scraps accumulated on the surface of the mesh plate (143) into the storage box (142). At the same time, the other end of the pull rope (145) is unwound from the inside of the first winding reel (1451) and the torsion spring (1452) is tightened. After cleaning is completed, the winding motor (1454) stops rotating, and the elastic force of the torsion spring (1452) drives the first winding reel (1451) to rotate in the opposite direction. The first winding reel (1451) winds the pull rope (145) in the opposite direction, which drives the toothed scraper (144) to automatically reset. When the toothed scraper (144) moves, it drives the elastic sheet (146) to move synchronously. The protrusion (1461) on the elastic sheet (146) presses on the surface of the mesh plate (143). When the protrusion (1461) moves to the filter hole position of the mesh plate (143), the elastic force of the elastic sheet (146) drives the protrusion (1461) to extend into the filter hole, and ejects the metal debris stuck inside the filter hole downward.

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