A cleaning device for metal processing

Abstract

The invention relates to the technical field of metal processing, and discloses a cleaning device for metal processing, comprising a box body, wherein the box body has no upper and lower walls, and the left and right walls of the box body are opened and closed with semicircular grooves, and arc plates are fixedly installed in the two semicircular grooves, and support frames are fixedly installed on the left and right sides of the box body, and rotating rods are arranged on the two support frames, and a rotating column is fixedly sleeved on the rotating rod, and a plurality of magnets are movably sleeved on the rotating column. By placing the rotating tube on the ground, the box body can be pushed to move, so that the magnet can be used to adsorb iron filings on the upper end of the ground on the rotating tube, and as the box body is pushed to move, the rotating tube can be rotated, thereby driving the adsorbed iron filings to move into the box body, and when the iron filings move to the arc plate, the iron filings will be scraped off and then moved to the inclined plate as the subsequent iron filings are pushed, and then the iron filings will move along the inclined plate into the collection box, so that the iron filings on the ground can be quickly cleaned and collected.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a cleaning device used for metal processing. Background Art

[0002] Metal processing refers to the production activities of humans processing materials with metal characteristics that are composed of metal elements or mainly composed of metal elements. Metal processing is referred to as metalworking. It is a process technology that processes metal materials into objects, parts, and components, including large parts of bridges and ships, and even small components of engines, jewelry, and watches. It is widely used in different fields such as science, industry, art, and handicrafts. A large amount of iron filings are generated during metal processing, and iron filings are relatively heavy, which will cause the iron filings to scatter on the ground and be inconvenient to clean up, which will cause a large workload for the later cleaning personnel and affect efficiency. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a cleaning device for metal processing, which has the advantages of being able to quickly clean and collect iron filings on the ground, and solves the problem that the iron filings are heavy, which causes them to be scattered on the ground and are inconvenient to clean, thus resulting in a large workload for the subsequent cleaning personnel and affecting efficiency.

[0004] In order to achieve the above-mentioned purpose of quickly cleaning and collecting iron filings on the ground, the present invention provides the following technical solutions: a cleaning device for metal processing, including a box body, the box body has no upper and lower walls, and the left and right walls of the box body are opened and closed with semicircular grooves, and arc plates are fixedly installed in the two semicircular grooves, and support frames are fixedly installed on the left and right sides of the box body, and a rotating rod is provided on the two support frames. A rotating column is fixedly sleeved on the rotating rod, and a plurality of magnets are movably sleeved on the rotating column. A rotating tube is movably sleeved on the plurality of magnets, and two rotating rings are threadedly sleeved on the rotating rod, and a fixing ring is fixedly sleeved on the two rotating rings. The two rotating rings are respectively fitted with the left and right ends of the rotating tube, and the inner wall of the arc plate is fitted with the outer wall of the rotating tube. An inclined plate is fixedly installed on the arc plate, and a collection box is provided on the inclined plate.

[0005] Preferably, an L-shaped plate is fixedly mounted on the inclined plate, the collecting box is placed on the L-shaped plate, two short strips are fixedly mounted on the upper side of the collecting box, and finger grooves are provided on the lower sides of the two short strips.

[0006] Preferably, semicircular bars a are fixedly installed on the two support frames, semicircular bars b are arranged below the two semicircular bars a, two connecting blocks are fixedly installed on the outer walls of the two semicircular bars a, square grooves are opened on the four connecting blocks, and vertical bars are movably connected in each square groove.

[0007] Preferably, each of the vertical bars is provided with a slide groove, and a metal bar is movably connected in each slide groove. Thin strips are provided on the left and right sides of the box body, and the two thin strips are fixedly connected to the four metal bars respectively. Two small blocks are fixedly installed on the two semicircular bars b, and the four small blocks are fixedly connected to the lower ends of the four vertical bars respectively. The two semicircular bars a can be assembled into two circular rings with the two semicircular bars b respectively, and the rotating rod is movably connected to the circular ring composed of the two semicircular bars a and the two semicircular bars b.

[0008] Preferably, the four metal strips are each provided with a movable groove at one end close to the two rotating rings, and a movable ball is movably connected in each movable groove.

[0009] Preferably, two oblique rods are fixedly installed on the front of the box body, reinforcement strips are fixedly installed on the two oblique rods, rotating wheels are arranged on the two oblique rods, and two oblique arms are fixedly installed on the front of the box body, pushing rods are fixedly installed on the two oblique arms.

[0010] Preferably, a cross bar is provided in the box body, and two ends of the cross bar respectively movably penetrate the left and right walls of the box body, a movable plate is fixedly installed on the cross bar, a telescopic slot is opened on the lower side of the movable plate, a telescopic plate is movably connected in the telescopic slot, two telescopic rods are fixedly installed on the upper side of the telescopic plate, both telescopic rods movably penetrate the telescopic slot, control rods are fixedly installed on the two telescopic rods, and a number of tension springs are fixedly installed on the upper side of the telescopic plate, and the upper end of each tension spring is fixedly connected to the upper inner wall of the telescopic slot.

[0011] Preferably, the rotating rod is provided with two annular wall grooves, and two bearings are arranged on the rotating rod. The inner rings of the two bearings are respectively fixedly sleeved on the two annular wall grooves, and four notches are respectively provided on a plurality of magnets. Four connecting strips are fixedly installed on the outer wall of the rotating column, and the four connecting strips are respectively movably connected to the plurality of notches.

[0012] Compared with the prior art, the present invention provides a cleaning device for metal processing, which has the following beneficial effects:

[0013] 1. The cleaning device for metal processing places a rotating tube on the ground and then pushes the box to move, so that the iron filings on the ground can be adsorbed on the rotating tube by using a magnet. As the box is pushed to move, the rotating tube can be rotated, thereby driving the adsorbed iron filings to move into the box. When the iron filings move to the arc plate, the iron filings will be scraped off and then moved to the inclined plate as the subsequent iron filings are pushed. Then the iron filings will move along the inclined plate into the collection box, so that the iron filings on the ground can be quickly cleaned and collected.

[0014] 2. The cleaning device for metal processing can facilitate the user to move the collection box upwards through two short strips and the finger groove. When the user collects a proper amount of iron filings in the collection box, move the collection box upwards to take out the collected iron filings. After cleaning the iron filings in the collection box, the collection box is placed on the L-shaped plate and the iron filings can continue to be collected.

[0015] 3. The cleaning device for metal processing can remove the two semicircular bars b after pulling out the four metal bars, so that the rotating rod can be removed, and the rotating rod can be removed, so that it is convenient for users to replace and detect structures such as magnets. During installation, the vertical bars on the two semicircular bars b are conveniently inserted into the four square grooves, and then the four metal bars are respectively inserted into the four slide grooves. After the four metal bars are respectively fitted with the two rotating rings, the four metal bars will be adsorbed by the suction force of the magnet, so that the two semicircular bars b can be fixed. Before fixing the two semicircular bars b, the rotating rod can be placed in the two semicircular bars a and then the rotating rod can be installed, which is convenient for users to install and use.

[0016] 4. The cleaning device used for metal processing can facilitate users to pull out four metal strips through two thin strips, and can reduce the friction between the four metal strips and two rotating rings through four movable grooves and four movable balls, so as to avoid the metal strips scratching the two rotating rings and avoid excessive friction and adsorption force when the rotating rings rotate to affect the user's pushing of the device.

[0017] 5. The cleaning device for metal processing can place the two rotating wheels on the ground through two inclined rods and two rotating wheels when the device is not in use, and can facilitate users to push the box to move through two inclined arms and a pushing rod, thereby improving the practicability of the device.

[0018] 6. The cleaning device used for metal processing can move the two telescopic rods downward through the control rod, so that the telescopic plate can be driven to move downward, so that the movable plate can be rotated and moved, so that the telescopic plate can be driven to rotate and move to scrape off the iron filings on the inclined plate, so that when too much iron filings are accumulated on the inclined plate, the accumulated iron filings can be cleaned and scraped into the collection box.

[0019] 7. The cleaning device for metal processing has two bearings. When the rotating rod is installed, the two bearings are placed in the two semicircular bars a, so that the friction between the rotating rod and the circular ring composed of the two semicircular bars a and the two semicircular bars b can be reduced. The magnet can be rotated with the rotating column through the notch and the connecting strip. In this way, after the rotating rod and the rotating tube are fixed by the rotating ring and the fixing ring, the magnet is kept rotating with the rotating tube. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the middle inclined plate;

[0022] Figure 3 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the collection box;

[0023] Figure 4 For the present invention Figure 2 Schematic diagram of the three-dimensional structure of the central rotating tube;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the three-dimensional structure of the magnet;

[0025] Figure 6 For the present invention Figure 1 A schematic diagram of the three-dimensional structure of the middle support frame;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the three-dimensional structure of the middle thin strip;

[0027] Figure 8 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the movable plate.

[0028] In the figure: 1, box; 2, collection box; 5, control rod; 6, telescopic rod; 7, push rod; 8, oblique arm; 9, oblique plate; 10, reinforcement strip; 11, oblique rod; 12, rotating ring; 13, semicircular strip b; 14, arc plate; 15, support frame; 16, tension spring; 17, telescopic plate; 18, movable plate; 19, telescopic slot; 20, fixed ring; 21, annular wall slot; 22, bearing; 23, rotating rod ; 24. Rotating column; 25. Magnet; 26. Notch; 27. Rotating tube; 28. Connecting strip; 29. ​​Semicircular strip a; 30. L-shaped plate; 31. Short strip; 32. Finger groove; 33. Thin strip; 34. Small block; 35. Connecting block; 36. Slide groove; 37. Square groove; 38. Vertical strip; 39. Metal strip; 40. Movable groove; 41. Movable ball; 42. Semicircular groove; 43. Rotating wheel; 44. Crossbar. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings, wherein the same components are represented by the same figure numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower", "bottom surface" and "top surface" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0030] 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.

[0031] See also Figure 1-Figure 8The present invention provides a technical solution: a cleaning device for metal processing, comprising a box body 1, the box body 1 has no upper and lower walls, the left and right walls of the box body 1 are opened and closed with semicircular grooves 42, and arc plates 14 are fixedly installed in the two semicircular grooves 42, and support frames 15 are fixedly installed on the left and right sides of the box body 1, and a rotating rod 23 is arranged on the two support frames 15, and a rotating column 24 is fixedly sleeved on the rotating rod 23, and a plurality of magnets 25 are movably sleeved on the rotating column 24, and a rotating tube 27 is movably sleeved on the plurality of magnets 25, and two rotating rings 12 are threadedly sleeved on the rotating rod 23, and a fixed ring 20 is fixedly sleeved on the two rotating rings 12, and the two rotating rings 12 are respectively fitted with the left and right ends of the rotating tube 27, and the inner wall of the arc plate 14 is fitted with the outer side of the rotating tube 27 The wall is fitted, and an inclined plate 9 is fixedly installed on the arc plate 14. A collecting box 2 is arranged on the inclined plate 9. By placing the rotating tube 27 on the ground, the box body 1 can be pushed to move, so that the iron filings on the upper end of the ground can be adsorbed on the rotating tube 27 by the magnet 25. As the box body 1 is pushed to move, the rotating tube 27 can be rotated, thereby driving the adsorbed iron filings to move into the box body 1. When the iron filings move to the arc plate 14, the iron filings will be scraped off and then moved to the inclined plate 9 as the subsequent iron filings are pushed, and then the iron filings will move along the inclined plate 9 into the collecting box 2, so that the iron filings on the ground can be quickly cleaned and collected. An L-shaped plate 30 is fixedly installed on the inclined plate 9, and the collecting box 2 is placed on the L-shaped plate 30. The upper side of the collecting box 2 is fixed Two short strips 31 are fixedly installed, and finger grooves 32 are provided on the lower sides of the two short strips 31. The two short strips 31 and the finger grooves 32 can facilitate the user to move the collection box 2 upwards. In this way, when the user collects a proper amount of iron filings in the collection box 2, the collection box 2 is moved upwards to take out the collected iron filings. After the iron filings in the collection box 2 are cleaned up, the collection box 2 is placed on the L-shaped plate 30 and the iron filings can be continued to be collected. Semicircular strips a29 are fixedly installed on the two support frames 15, and semicircular strips b13 are provided below the two semicircular strips a29. Two connecting blocks 35 are fixedly installed on the outer walls of the two semicircular strips a29, and square grooves 37 are provided on the four connecting blocks 35. A vertical strip 38 is movably connected in each square groove 37, and a slide groove is provided on each vertical strip 38. 36, each slide groove 36 is movably connected with a metal strip 39, and thin strips 33 are provided on the left and right sides of the box body 1, and the two thin strips 33 are fixedly connected with the four metal strips 39 respectively, and two small blocks 34 are fixedly installed on the two semicircular strips b13, and the four small blocks 34 are fixedly connected with the lower ends of the four vertical strips 38 respectively, and the two semicircular strips a29 and the two semicircular strips b13 can be assembled into two rings, and the rotating rod 23 is movably connected with the ring composed of the two semicircular strips a29 and the two semicircular strips b13. After pulling out the four metal strips 39, the two semicircular strips b13 can be removed, so that the rotating rod 23 can be removed, and the rotating rod 27 can be removed, so that it is convenient for users to replace and detect structures such as the magnet 25.During installation, the vertical bars 38 on the two semicircular bars b13 are conveniently inserted into the four square grooves 37, and then the four metal bars 39 are respectively inserted into the four slide grooves 36. After the four metal bars 39 are respectively fitted with the two rotating rings 12, the four metal bars 39 will be adsorbed by the suction force of the magnet 25, so that the two semicircular bars b13 can be fixed. Before fixing the two semicircular bars b13, the rotating rod 23 can be placed in the two semicircular bars a29, and then the rotating rod 23 can be installed, so as to facilitate the user to install and use. The four metal bars 39 are respectively provided with movable grooves 40 at one end close to the two rotating rings 12, and each movable groove 40 is movably connected with an movable ball 41. The two thin strips 33 can facilitate the user to pull the four metal bars 39. The four movable grooves 40 and the four movable balls 41 can reduce the friction between the four metal strips 39 and the two rotating rings 12, so as to avoid the metal strips 39 scratching the two rotating rings 12 and avoid excessive friction when the rotating rings 12 rotate and the adsorption force affecting the user's pushing of the device. Two inclined rods 11 are fixedly installed on the front of the box 1, and reinforcement strips 10 are fixedly installed on the two inclined rods 11. Rotating wheels 43 are arranged on the two inclined rods 11. Two inclined arms 8 are fixedly installed on the front of the box 1. Push rods 7 are fixedly installed on the two inclined arms 8. When the device is not in use, the two rotating wheels 43 can be placed on the ground through the two inclined rods 11 and the two rotating wheels 43. The two inclined arms 8 and the pushing rod 7 can facilitate the user to push the box 1 to move, thereby improving The practicality of the device is that a cross bar 44 is arranged in the box body 1, and the two ends of the cross bar 44 are respectively movably penetrated through the left and right walls of the box body 1, and a movable plate 18 is fixedly installed on the cross bar 44, and a telescopic slot 19 is provided on the lower side of the movable plate 18, and a telescopic plate 17 is movably connected in the telescopic slot 19, and two telescopic rods 6 are fixedly installed on the upper side of the telescopic plate 17, and the two telescopic rods 6 are movably penetrated through the telescopic slot 19, and a control rod 5 is fixedly installed on the two telescopic rods 6, and a plurality of tension springs 16 are fixedly installed on the upper side of the telescopic plate 17, and the upper end of each tension spring 16 is fixedly connected to the upper inner wall of the telescopic slot 19, and the two telescopic rods 5 can be moved downward by the control rod 5, so that the telescopic plate 17 can be driven to move downward, so that the movable plate 18 can be rotated and moved, so that the telescopic plate 17 can be driven to rotate. The rotating rod 23 is provided with two annular wall grooves 21, and two bearings 22 are arranged on the rotating rod 23. The inner rings of the two bearings 22 are respectively fixedly sleeved on the two annular wall grooves 21. Four notches 26 are arranged on a plurality of magnets 25. Four connecting strips 28 are fixedly installed on the outer wall of the rotating column 24. The four connecting strips 28 are respectively movably connected with a plurality of notches 26. Through the two bearings 22, the two bearings 22 are placed in the two semicircular strips a29 when the rotating rod 23 is installed. In this way, the friction between the rotating rod 23 and the circular ring composed of the two semicircular strips a29 and the two semicircular strips b13 can be reduced.The magnet 25 can rotate with the rotating column 24 through the notch 26 and the connecting strip 28, so that the magnet 25 can rotate with the rotating tube 27 after the rotating rod 23 and the rotating tube 27 are fixed by the rotating ring 12 and the fixing ring 20.

[0032] When in use, the first step is: by placing the rotating tube 27 on the ground, and then pushing the box 1 to move, the magnet 25 can be used to adsorb the iron filings on the upper end of the ground on the rotating tube 27. As the box 1 is pushed to move, the rotating tube 27 can be rotated, thereby driving the adsorbed iron filings to move into the box 1. When the iron filings move to the arc plate 14, the iron filings will be scraped off and then moved to the inclined plate 9 as the subsequent iron filings are pushed. Then the iron filings will move along the inclined plate 9 into the collection box 2, so that the iron filings on the ground can be quickly cleaned and collected.

[0033] Step 2: The two short strips 31 and the finger grooves 32 can facilitate the user to move the collection box 2 upwards. When the user collects a proper amount of iron filings in the collection box 2, move the collection box 2 upwards to take out the collected iron filings. After cleaning the iron filings in the collection box 2, place the collection box 2 on the L-shaped plate 30 and continue to collect iron filings.

[0034] Step 3: After pulling out the four metal strips 39, the two semicircular strips b13 can be removed, so that the rotating rod 23 can be removed, and the rotating rod 27 can be removed, so that it is convenient for users to replace and detect structures such as the magnet 25. During installation, the vertical strips 38 on the two semicircular strips b13 are conveniently inserted into the four square grooves 37, and then the four metal strips 39 are respectively inserted into the four slide grooves 36. After the four metal strips 39 are respectively fitted with the two rotating rings 12, the four metal strips 39 will be adsorbed by the suction force of the magnet 25, so that the two semicircular strips b13 can be fixed. Before fixing the two semicircular strips b13, the rotating rod 23 can be placed in the two semicircular strips a29 and then the rotating rod 23 can be installed, which is convenient for users to install and use.

[0035] Step 4: The two thin strips 33 can facilitate the user to pull the four metal strips 39, and the four movable grooves 40 and the four movable balls 41 can reduce the friction between the four metal strips 39 and the two rotating rings 12, so as to avoid the metal strips 39 scratching the two rotating rings 12 and prevent the rotating rings 12 from rotating and causing excessive friction and adsorption force to affect the user's pushing of the device.

[0036] Step 5: When the device is not in use, the two rotating wheels 43 can be placed on the ground through the two inclined rods 11 and the two rotating wheels 43. The two inclined arms 8 and the pushing rod 7 can facilitate the user to push the box 1 to move, thereby improving the practicability of the device.

[0037] Step 6: The two telescopic rods 5 can be moved downward by the control rod 5, so that the telescopic plate 17 can be driven to move downward, so that the movable plate 18 can be rotated and moved, so that the telescopic plate 17 can be driven to rotate and move to scrape off the iron filings on the inclined plate 9, so that when too much iron filings are accumulated on the inclined plate 9, the accumulated iron filings can be cleaned and scraped into the collection box 2.

[0038] Step 7: Through two bearings 22, when installing the rotating rod 23, the two bearings 22 are placed in the two semicircular bars a29, so that the friction between the rotating rod 23 and the circular ring composed of the two semicircular bars a29 and the two semicircular bars b13 can be reduced, and the magnet 25 can be rotated with the rotating column 24 through the notch 26 and the connecting bar 28. In this way, after the rotating rod 23 and the rotating tube 27 are fixed by the rotating ring 12 and the fixing ring 20, the magnet 25 is kept rotating with the rotating tube 27.

[0039] 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 cleaning device for metal processing, comprising a housing (1), characterized in that: The box body (1) has no upper and lower walls. The left and right walls of the box body (1) are opened and closed with semicircular grooves (42). The two semicircular grooves (42) are fixedly installed with arc plates (14). The left and right sides of the box body (1) are fixedly installed with support frames (15). The two support frames (15) are provided with rotating rods (23). The rotating rods (23) are fixedly sleeved with rotating columns (24). The rotating columns (24) are movably sleeved with a plurality of magnets (25). The plurality of magnets (25) are movably sleeved with rotating tubes (27). The rotating rods (23) are threadedly sleeved with two rotating rings (12). The two rotating rings (12) are fixedly sleeved with fixed rings (20). The two rotating rings (12) are respectively fitted with the left and right ends of the rotating tube (27). The arc plates ( The inner wall of the arc plate (14) is fitted with the outer wall of the rotating tube (27), an inclined plate (9) is fixedly installed on the arc plate (14), a collecting box (2) is arranged on the inclined plate (9), an L-shaped plate (30) is fixedly installed on the inclined plate (9), the collecting box (2) is placed on the L-shaped plate (30), two short strips (31) are fixedly installed on the upper side of the collecting box (2), the lower sides of the two short strips (31) are provided with finger grooves (32), the two supporting frames (15) are fixedly installed with semicircular strips a (29), the lower sides of the two semicircular strips a (29) are provided with semicircular strips b (13), the outer walls of the two semicircular strips a (29) are fixedly installed with two connecting blocks (35), the four connecting blocks (35) are provided with square grooves (37), and each square groove (37) is movable A vertical bar (38) is connected, each vertical bar (38) is provided with a slide groove (36), each slide groove (36) is movably connected with a metal bar (39), thin bars (33) are arranged on the left and right sides of the box body (1), two thin bars (33) are respectively fixedly connected with the four metal bars (39), two small blocks (34) are fixedly installed on the two semicircular bars b (13), the four small blocks (34) are respectively fixedly connected with the lower ends of the four vertical bars (38), the two semicircular bars a (29) and the two semicircular bars b (13) can be assembled into two circular rings, the rotating rod (23) is movably connected with the circular ring composed of the two semicircular bars a (29) and the two semicircular bars b (13), and the four metal bars (39) are respectively close to the two rotating rings (12 ) are provided with a movable groove (40) at one end, and a movable ball (41) is movably connected in each movable groove (40); two inclined rods (11) are fixedly installed on the front of the box body (1), and a reinforcement strip (10) is fixedly installed on the two inclined rods (11); and a rotating wheel (43) is provided on the two inclined rods (11); two inclined arms (8) are fixedly installed on the front of the box body (1), and a push rod (7) is fixedly installed on the two inclined arms (8); a cross bar (44) is provided in the box body (1), and the two ends of the cross bar (44) are respectively movably penetrated through the left and right walls of the box body (1); a movable plate (18) is fixedly installed on the cross bar (44), and a telescopic groove (19) is provided on the lower side of the movable plate (18), and a telescopic plate (17) is movably connected in the telescopic groove (19).Two telescopic rods (6) are fixedly mounted on the upper side of the telescopic plate (17), and the two telescopic rods (6) are both movably inserted into the telescopic slot (19). A control rod (5) is fixedly mounted on the two telescopic rods (6). A plurality of tension springs (16) are fixedly mounted on the upper side of the telescopic plate (17), and the upper end of each tension spring (16) is fixedly connected to the inner wall of the telescopic slot (19). Two annular wall grooves (21) are provided on the rotating rod (23), and two bearings (22) are provided on the rotating rod (23). The inner rings of the two bearings (22) are respectively fixedly sleeved on the two annular wall grooves (21). Four notches (26) are respectively provided on the plurality of magnets (25). Four connecting strips (28) are fixedly mounted on the outer wall of the rotating column (24), and the four connecting strips (28) are respectively movably connected to the plurality of notches (26).

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