Flexible lamp strip cutting device for LED lighting lamp production

Abstract

The flexible lamp strip cutting device comprises a bottom frame and a containing roller, the containing roller is rotationally connected to one end of one side of the bottom frame, three sets of rotating rollers are rotationally connected to one side of the bottom frame, a material collecting assembly is arranged at the other end of the surface of the bottom frame, and a positioning cutting assembly is arranged on the surface of the material collecting assembly. The invention discloses a flexible lamp strip cutting device which is applied to the technical field of LED lighting lamp production, a material receiving assembly can drive a positioning cutting assembly to fix and cut the position, after cutting is completed, a wound flexible lamp strip on the surface of the material receiving assembly is taken down, and the untreated end of the flexible lamp strip droops on the surface of a rotating roller at the tail end, so that the flexible lamp strip is cut off. And at the moment, the flexible lamp strip can be wound again through the material collecting assembly, and the effect that the cutting efficiency of the flexible lamp strip can be improved is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of LED lighting fixture production, and in particular relates to a flexible light strip cutting device used in the production of LED lighting fixtures. Background Art

[0002] LED lighting fixtures are lighting equipment that uses light-emitting diodes (LEDs) as light sources. They have high luminous efficiency and can significantly save energy compared to traditional lamps. They have long lifespans, can reduce replacement frequency and maintenance costs, and have advantages such as fast response speed and strong shock resistance. They are rich in colors and can present a variety of light colors to meet the needs of creating atmospheres in different scenes. They have diverse appearance designs, flexible sizes, and easy installation. They are widely used in various lighting scenes such as home, commercial, industrial, and outdoor. This technical solution is mainly suitable for the use of flexible light strips. In some small businesses, since large-scale fully automatic flexible light strip cutting devices are expensive to use, manual or semi-automatic devices are chosen for cutting. However, such semi-automatic devices often require staff to participate in the shifting and positioning of the flexible light strips. This will increase labor costs due to excessive manual participation. Summary of the invention

[0003] The object of the present invention is to provide a flexible light strip cutting device for the production of LED lighting fixtures, which has the advantage of being able to transport, position, cut, roll up and remove impurities from the flexible light strip.

[0004] The above technical purpose of the present invention is achieved through the following technical scheme: a flexible light strip cutting device for the production of LED lighting fixtures, including a base frame and a placing roller, the placing roller is rotatably connected to one end of one side of the base frame, three groups of rotating rollers are rotatably connected to one side of the base frame, a material receiving assembly is arranged at the other end of the surface of the base frame, and a positioning and cutting assembly is arranged on the surface of the material receiving assembly.

[0005] By adopting the above technical solution, the positioning and cutting component is used to fix the position and cut the flexible light strip, the receiving component is used to transport and receive the flexible light strip, and after cutting the flexible light strip, impurities on the surface of the device can be vibrated off.

[0006] The present invention is further configured as follows: the positioning and cutting assembly includes a bracket, the bracket is welded to one side of the upper end of the base frame, a dual-axis motor is bolted inside the bracket, and one set of output ends of the dual-axis motor is fixedly connected to a first rotating wheel.

[0007] By adopting the above technical solution, when the dual-axis motor drives one set of output ends to operate, it will drive the first rotating wheel to rotate.

[0008] The present invention is further configured as follows: Three groups of limiting plates are welded to one side of the inner wall of the chassis. Two groups of the upper and lower limiting plates are internally rotatably connected with lead screws. One side of the middle limiting plate is internally rotatably connected with a second runner. A bevel gear is welded to each of the second runner and one end of the two lead screws. The three bevel gears are jointly arranged in a meshed connection, and the three bevel gears are all arranged inside the middle limiting plate.

[0009] With the above technical solution, the limiting plates are used to support and limit the lead screws, and the three bevel gears rotate meshingly with each other.

[0010] The present invention is further configured as follows: A belt is commonly drivingly connected to the surfaces of the first runner and the second runner. A limiting rod is welded to one side of the surface of the chassis. Lifting plates are arranged between the two lead screws and the limiting rod, and the lifting plates are in threaded connection with the lead screws and in sliding connection with the limiting rod. A rotating rod is welded inside the lifting plates.

[0011] With the above technical solution, when the first runner rotates, it will drive the second runner and the three bevel gears to rotate by means of the belt, thereby driving the lead screws to rotate, and the lifting plates will move up and down with the rotation of the lead screws.

[0012] The present invention is further configured as follows: Four groups of first spring ejector rods are bolted inside the lifting plates. The piston ends of the four first spring ejector rods are jointly bolted to a positioning shell, and the positioning shell is in sliding connection with the lifting plates. A toothed plate is welded to one side of the lifting plates. A cutting knife is fixedly connected to one side of the lifting plates. Cleaning brushes are rotatably connected to both ends of the positioning shell close to the cutting knife. A first gear is welded to one end of each of the two cleaning brushes, and the first gear is in meshed connection with the toothed plate.

[0013] With the above technical solution, when the lifting plates move, the positioning shell will first contact the flexible light strip. As the lifting plates continue to move, the two positioning shells will clamp the surface of the flexible light strip, and the positioning shell will move downward inside the lifting plates by means of the first spring ejector rods. During the downward movement, the cutting knife will gradually move out of the positioning shell, so that the cutting knife cuts the flexible light strip. And during the movement of the positioning shell, the first gear meshing with the toothed plate will rotate, and the first gear will drive the cleaning brushes to rotate, so that the cleaning brushes clean the surface of the cutting knife. Because when the cutting knife cuts the flexible light strip, impurities will adhere to the surface of the cutting knife, and the first spring ejector rods can drive the moved positioning shell to reset.

[0014] The present invention is further configured as follows: The material receiving assembly includes a mounting plate, which is welded to the other output end of the dual-axis motor. An electric push rod is movably connected inside the mounting plate. One end of the electric push rod is welded with two movable plates, and the two movable plates are respectively located on both sides of the mounting plate and are rotatably connected to the mounting plate.

[0015] With the above technical solution, the electric push rod is installed inside the mounting plate, and the movable plate limits the electric push rod to prevent it from rotating inside the mounting plate at a certain position.

[0016] The present invention is further configured as follows: A number of groups of inclined plates are welded on one side of the mounting plate. A connecting plate is fixedly connected to the surface of the electric push rod. A fourth spring ejector rod is bolted between the connecting plate and one of the movable plates. Pressing plates are welded on both sides of the connecting plate, and the pressing plates and the inclined plates are detachably arranged.

[0017] With the above technical solution, both sides of the inclined plate are inclined surfaces and the surface is relatively smooth. When the electric push rod drives the connecting plate to move, the pressing plate will press against the inclined surface, so that the inclined plate drives the connecting plate and the electric push rod to translate.

[0018] The present invention is further configured as follows: A third spring ejector rod is bolted to the surface of the mounting plate. The piston end of the third spring ejector rod is bolted to an arc-shaped plate, and the arc-shaped plate is slidably connected to the electric push rod. A third gear is sleeved on the surface of the electric push rod, and the third gear is fixedly connected to the electric push rod. A servo motor is bolted to the lower end of one side of the mounting plate.

[0019] With the above technical solution, when the servo motor operates, it will drive the third gear and the electric push rod to rotate by using the second gear. The third spring ejector rod and the arc-shaped plate are used to push the translated electric push rod back to its original position.

[0020] The present invention is further configured as follows: The output end of the servo motor is bolted to a second gear, and the second gear is meshed with the third gear. A fixing plate is welded on the surface of the electric push rod. A baffle is movably connected to the surface of the electric push rod. A baffle is welded on one side of the baffle.

[0021] With the above technical solution, the fixing plate is used to block the movement of the baffle.

[0022] The present invention is further configured as follows: A limiting column is slidably connected inside the baffle. A hollow shell is welded on the surface of the limiting column, and the baffle is movably connected inside the hollow shell. Two sets of rotating columns are welded inside one end of the hollow shell. A rotating plate is rotatably connected to the surface of the rotating column, and the rotating plate is rotatably connected to the rotating rod. The piston end of the electric push rod is bolted to a winding shell.

[0023] With the above technical solution, when the lifting plate moves, it will drive the rotating plate to rotate on the surfaces of the rotating rod and the rotating column, so that the two groups of rotating plates open and close synchronously. When one end of the two groups of rotating plates moves synchronously with the lifting plate towards both ends, the rotating plate will drive the hollow shell to move, and then the baffle plate will move towards the fixed plate side and squeeze the fixed plate. At this time, the electric push rod will move forward, and the extrusion plate will continuously move and reset by using the inclined plate and the third spring ejector rod. The generated vibration will cause the impurities on the surface of the winding shell to fall off, preventing excessive impurities from affecting the quality of the next winding, resulting in uneven winding or scratching the flexible light strip. When the other output end of the dual-axis motor drives the mounting plate to rotate to a suitable position close to the rotating roller at the end, since one end of the flexible light strip will droop from the rotating roller at the end after being cut, the electric push rod will push the winding shell forward and clamp it on both sides of the flexible light strip. Then, the servo motor is started to drive the winding shell to wind the flexible light strip, and the flexible light strip on the surface of the winding shell is taken off after each cutting.

[0024] In summary, the present invention has the following beneficial effects: During use, the coiled flexible light strip to be cut is hung on the surface of the placing roller, and the flexible light strip is respectively wound around the surfaces of the three rotating rollers and is wound by the material collecting assembly. Four flexible light strips can be processed simultaneously on the surface of the rotating roller. The rotating roller and the placing roller can rotate on the surface of the chassis. Then, the material collecting assembly is started to wind the flexible light strip, so that the flexible light strip can move. When it is necessary to cut the flexible light strip at a certain position, the material collecting assembly will drive the positioning cutting assembly to fix and cut the position. After cutting, the wound flexible light strip on the surface of the material collecting assembly is taken off, and one end of the flexible light strip that has not been processed will droop on the surface of the rotating roller at the end. At this time, the material collecting assembly can be used to wind the flexible light strip again, achieving the effect of improving the cutting efficiency of the flexible light strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic three-dimensional view of the overall structure of the present invention; Figure 2 is a schematic three-dimensional view of the hollow shell structure of the present invention; Figure 3 is a schematic three-dimensional view of the dual-axis motor structure of the present invention; Figure 4 is a schematic three-dimensional view of the mounting plate structure of the present invention; Figure 5 is a schematic three-dimensional view of the movable plate structure of the present invention; Figure 6 is a schematic three-dimensional view of the lifting plate structure of the present invention; Figure 7 is a schematic three-dimensional view of the rotating plate structure of the present invention.

[0026] Reference numerals: 1. Underframe; 2. Placing roller; 3. Rotating roller; 4. Positioning and cutting assembly; 401. Limit rod; 402. Biaxial motor; 403. Bracket; 404. First runner; 405. Second runner; 406. Belt; 407. Bevel gear; 408. Lead screw; 409. Limit plate; 410. Lifting plate; 411. Rotating rod; 412. First spring ejector; 413. Cutter; 414. Rack; 415. Positioning shell; 416. First gear; 417. Cleaning brush; 5. Material receiving assembly; 501. Electric push rod; 502. Rotating column; 503. Rotating plate; 504. Hollow shell; 505. Limit post; 506. Baffle; 507. Winding shell; 508. Servo motor; 509. Second gear; 510. Fixed plate; 511. Mounting plate; 512. Third gear; 513. Inclined plate; 515. Movable plate; 516. Arc plate; 517. Third spring ejector; 518. Fourth spring ejector; 519. Connecting plate; 520. Extrusion plate. Detailed implementation mode

[0027] The present invention will be further described in detail below with reference to the accompanying drawings. Embodiment 1:

[0028] Refer to Figure 1-7 , a flexible light strip cutting device for LED lighting fixture production, including an underframe 1 and a placing roller 2. The placing roller 2 is rotatably connected to one end of one side of the underframe 1. Three rotating rollers 3 are rotatably connected to one side of the underframe 1. A material receiving assembly 5 is arranged at the other end of the surface of the underframe 1. A positioning and cutting assembly 4 is arranged on the surface of the material receiving assembly 5.

[0029] Brief description of the usage process: During use, the coiled flexible light strip to be cut is hung on the surface of the placing roller 2, and the flexible light strip is respectively wound around the surfaces of the three rotating rollers 3 and is wound by the material receiving assembly 5. The surface of the rotating roller 3 can process four flexible light strips at the same time. The rotating roller 3 and the placing roller 2 can rotate on the surface of the underframe 1. Then, the material receiving assembly 5 is started to wind the flexible light strip, so that the flexible light strip can move. When it is necessary to cut the flexible light strip at a certain position, the material receiving assembly 5 will drive the positioning and cutting assembly 4 to fix and cut the position. After cutting, the wound flexible light strip on the surface of the material receiving assembly 5 is taken down, and the unprocessed end of the flexible light strip will droop on the surface of the rotating roller 3 at the end. At this time, the material receiving assembly 5 can be used to wind the flexible light strip again, achieving the effect of improving the cutting efficiency of the flexible light strip. Embodiment 2:

[0030] On the basis of Embodiment 1, refer to Figure 2 . Figure 3 . Figure 6 And Figure 7, the positioning and cutting assembly 4 includes a bracket 403, which is welded to one side of the upper end of the chassis 1. A dual-axis motor 402 is bolted inside the bracket 403. One set of output ends of the dual-axis motor 402 is fixedly connected to a first runner 404; Three sets of limit plates 409 are welded to one side of the inner wall of the chassis 1. Lead screws 408 are rotatably connected inside the upper and lower limit plates 409. A second runner 405 is rotatably connected to one side of the middle limit plate 409. Bevel gears 407 are welded to one end of the second runner 405 and the two lead screws 408. The three bevel gears 407 are jointly arranged in a meshed connection, and the three bevel gears 407 are all arranged inside the middle limit plate 409; A belt 406 is jointly driven on the surfaces of the first runner 404 and the second runner 405. A limit rod 401 is welded to one side of the surface of the chassis 1. Lifting plates 410 are arranged between the two lead screws 408 and the limit rod 401. The lifting plates 410 are in threaded connection with the lead screws 408 and are in sliding connection with the limit rod 401. A rotating rod 411 is welded inside the lifting plate 410; Four first spring ejector rods 412 are bolted inside the lifting plate 410. The piston ends of the four first spring ejector rods 412 are jointly bolted to a positioning shell 415. The positioning shell 415 is in sliding connection with the lifting plate 410. A toothed plate 414 is welded to one side of the lifting plate 410. A cutting knife 413 is fixedly connected to one side of the lifting plate 410. Cleaning brushes 417 are rotatably connected to both ends of the positioning shell 415 close to the cutting knife 413. First gears 416 are welded to one end of the two cleaning brushes 417. The first gears 416 are in meshed connection with the toothed plate 414.

[0031] Brief description of the usage process: When the biaxial motor 402 operates, one of its output ends drives the first runner 404. Due to the setting of the belt 406, the first runner 404 drives the second runner 405 and three sets of bevel gears 407 to rotate. The bevel gears 407 drive two sets of lead screws 408 to rotate synchronously, so that the two lifting plates 410 move synchronously towards or away from each other on the surfaces of the lead screws 408 and the limit rods 401. When the two lifting plates 410 move towards each other, the positioning shell 415 first contacts the flexible light strip. As the lifting plates 410 continue to move, the two positioning shells 415 clamp on the surface of the flexible light strip, and the positioning shell 415 moves downward inside the lifting plate 410 by using the first spring ejector rod 412. During the downward movement, the cutter 413 gradually moves out of the positioning shell 415, so that the cutter 413 cuts the flexible light strip. And during the movement of the positioning shell 415, the first gear 416 meshed with the toothed plate 414 rotates, and the first gear 416 drives the cleaning brush 417 to rotate, so that the cleaning brush 417 cleans the surface of the cutter 413. Because when the cutter 413 cuts the flexible light strip, impurities will adhere to the surface of the cutter 413, and the first spring ejector rod 412 can drive the moved positioning shell 415 to reset, achieving the effect of facilitating the positioning and cutting of the flexible light strip and removing impurities from the surface of the cutter 413. Embodiment 3:

[0032] Based on Embodiment 2, refer to Figure 2 , Figure 4 , Figure 5 and Figure 7, the material receiving component 5 includes a mounting plate 511, which is welded to the other set of output ends of the dual-axis motor 402. An electric push rod 501 is movably connected inside the mounting plate 511. One end of the electric push rod 501 is welded with two movable plates 515, and the two movable plates 515 are respectively located on both sides of the mounting plate 511 and are rotatably connected to the mounting plate 511; several inclined plates 513 are welded on one side of the mounting plate 511. A connecting plate 519 is fixedly connected to the surface of the electric push rod 501. A fourth spring ejector rod 518 is bolted between the connecting plate 519 and one of the movable plates 515. Extrusion plates 520 are welded on both sides of the connecting plate 519, and the extrusion plates 520 are detachably arranged with the inclined plates 513; a third spring ejector rod 517 is bolted to the surface of the mounting plate 511. The piston end of the third spring ejector rod 517 is bolted with an arc-shaped plate 516, and the arc-shaped plate 516 is slidably connected to the electric push rod 501. A third gear 512 is sleeved on the surface of the electric push rod 501, and the third gear 512 is fixedly connected to the electric push rod 501. A servo motor 508 is bolted to the lower end of one side of the mounting plate 511; the output end of the servo motor 508 is bolted with a second gear 509, and the second gear 509 is meshed with the third gear 512. A fixing plate 510 is welded to the surface of the electric push rod 501. A baffle 506 is movably connected to the surface of the electric push rod 501. A baffle 506 is welded to one side of the baffle 506; a limiting column 505 is slidably connected inside the baffle 506. A hollow shell 504 is welded to the surface of the limiting column 505, and the baffle 506 is movably connected inside the hollow shell 504. Two rotating columns 502 are welded to the inside of one end of the hollow shell 504. A rotating plate 503 is rotatably connected to the surface of the rotating column 502, and the rotating plate 503 is rotatably connected to the rotating rod 411. The piston end of the electric push rod 501 is bolted with a winding shell 507.

[0033] Brief description of the usage process: When the lifting plate 410 moves, it drives the rotating plate 503 to rotate on the surfaces of the rotating rod 411 and the rotating column 502, so that the two groups of rotating plates 503 are in a synchronous opening and closing state. When one end of the two groups of rotating plates 503 synchronously moves outward to both ends following the lifting plate 410, the rotating plate 503 drives the hollow shell 504 to move towards one end of the winding shell 507, and then the baffle 506 moves towards the fixing plate 510 side and squeezes the fixing plate 510. At this time, the electric push rod 501 moves forward, and the squeezing plate 520 continuously moves and resets by using the inclined plate 513 and the third spring ejector rod 517. Because both sides of the inclined plate 513 are inclined planes and the surface is smooth, when the squeezing shell squeezes the inclined plate 513, the electric push rod 501 moves along the inclined plane inside the mounting plate 511 to one side. The third spring ejector rod 517 and the arc plate 516 are used to push the moved electric push rod 501 to reset. The vibration generated by multiple movements and resets will cause the impurities on the surface of the winding shell 507 to fall off, preventing excessive impurities from affecting the quality of the next winding, resulting in uneven winding or scratching the flexible light strip. The fourth spring ejector rod 518 is used to push the moved electric push rod 501 to reset. When the other output end of the dual-axis motor 402 drives the mounting plate 511 to rotate to a suitable position near the end rotating roller 3, the baffle 506 moves on the surface of the limiting column 505 inside the hollow shell 504. The limiting column 505 can prevent the baffle 506 from moving out of the hollow shell 504, and the electric push rod 501 also rotates inside one end of the baffle 506 to prevent jamming. Since one end of the flexible light strip droops from the end rotating roller 3 after being cut, the electric push rod 501 pushes the winding shell 507 forward and clamps it on both sides of the flexible light strip. Then, the servo motor 508 is started to drive the winding shell 507 to wind the flexible light strip. After each cutting, the flexible light strip on the surface of the winding shell 507 is removed, achieving the effect of facilitating the movement and winding of the flexible light strip and vibrating and removing the impurities on the surface of the winding shell 507.

[0034] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A flexible light strip cutting device for producing LED lighting fixtures, comprising a base frame (1) and a placement roller (2), characterized in that: The placing roller (2) is rotatably connected to one end of one side of the base frame (1), one side of the base frame (1) is rotatably connected to three groups of rotating rollers (3), the other end of the surface of the base frame (1) is provided with a material receiving assembly (5), and the surface of the material receiving assembly (5) is provided with a positioning cutting assembly (4).

2. The flexible light strip cutting device for producing LED lighting fixtures according to claim 1, characterized in that: The positioning and cutting assembly (4) comprises a bracket (403), the bracket (403) being welded to one side of the upper end of the base frame (1), the bracket (403) being internally bolted to a dual-axis motor (402), one set of output ends of the dual-axis motor (402) being fixedly connected to a first rotating wheel (404).

3. The flexible light strip cutting device for producing LED lighting fixtures according to claim 2, characterized in that: Three groups of limit plates (409) are welded to one side of the inner wall of the base frame (1); screw rods (408) are rotatably connected inside the upper and lower groups of limit plates (409); a second rotating wheel (405) is rotatably connected to one side of the middle limit plate (409); bevel gears (407) are welded to one end of the second rotating wheel (405) and the two groups of screw rods (408); the three groups of bevel gears (407) are arranged in meshing connection, and the three groups of bevel gears (407) are arranged inside the middle limit plate (409).

4. The flexible light strip cutting device for producing LED lighting fixtures according to claim 3, characterized in that: The surfaces of the first rotating wheel (404) and the second rotating wheel (405) are connected to each other by a belt (406) in a transmission manner. A limiting rod (401) is welded to one side of the surface of the base frame (1). A lifting plate (410) is provided between the two groups of screw rods (408) and the limiting rod (401). The lifting plate (410) and the screw rod (408) are threadedly connected. The lifting plate (410) and the limiting rod (401) are slidably connected. A rotating rod (411) is welded inside the lifting plate (410).

5. The flexible light strip cutting device for producing LED lighting fixtures according to claim 4, characterized in that: Four groups of first spring push rods (412) are bolted inside the lifting plate (410), and the piston ends of the four groups of first spring push rods (412) are bolted together to a positioning shell (415), and the positioning shell (415) and the lifting plate (410) are slidably connected, a tooth plate (414) is welded to one side of the lifting plate (410), and a cutter (413) is fixedly connected to one side of the lifting plate (410), and cleaning brushes (417) are rotatably connected to both ends of one side of the positioning shell (415) close to the cutter (413), and a first gear (416) is welded to one end of the two groups of cleaning brushes (417), and the first gear (416) and the tooth plate (414) are meshingly connected.

6. The flexible light strip cutting device for producing LED lighting fixtures according to claim 1, characterized in that: The material receiving assembly (5) comprises a mounting plate (511), the mounting plate (511) being welded to the other output end of the dual-axis motor (402), the mounting plate (511) being movably connected to an electric push rod (501) inside, two sets of movable plates (515) being welded to one end of the electric push rod (501), and the two sets of movable plates (515) being respectively located on both sides of the mounting plate (511) and being rotatably connected to the mounting plate (511).

7. The flexible light strip cutting device for producing LED lighting fixtures according to claim 6, characterized in that: A plurality of groups of inclined plates (513) are welded to one side of the mounting plate (511); a connecting plate (519) is fixedly connected to the surface of the electric push rod (501); a fourth spring push rod (518) is bolted to the connecting plate (519) and one group of movable plates (515); extrusion plates (520) are welded to both sides of the connecting plate (519); and the extrusion plates (520) and the inclined plates (513) are detachably arranged.

8. The flexible light strip cutting device for producing LED lighting fixtures according to claim 7, characterized in that: The surface of the mounting plate (511) is bolted with a third spring push rod (517), the piston end of the third spring push rod (517) is bolted with an arc plate (516), and the arc plate (516) and the electric push rod (501) are slidably connected, the surface of the electric push rod (501) is sleeved with a third gear (512), and the third gear (512) and the electric push rod (501) are fixedly connected, and the lower end of one side of the mounting plate (511) is bolted with a servo motor (508).

9. The flexible light strip cutting device for producing LED lighting fixtures according to claim 8, characterized in that: The output end of the servo motor (508) is bolted to a second gear (509), and the second gear (509) is meshingly connected to a third gear (512). A fixing plate (510) is welded to the surface of the electric push rod (501). A baffle (506) is movably connected to the surface of the electric push rod (501), and a baffle (506) is welded to one side of the baffle (506).

10. A flexible light strip cutting device for producing LED lighting fixtures according to claim 9, characterized in that: The baffle (506) is slidably connected to a limiting column (505) inside, a hollow shell (504) is welded on the surface of the limiting column (505), and the baffle (506) is movably connected to the inside of the hollow shell (504), two groups of rotating columns (502) are welded inside one end of the hollow shell (504), a rotating plate (503) is rotatably connected to the surface of the rotating column (502), and the rotating plate (503) is rotatably connected to the rotating rod (411), and the piston end of the electric push rod (501) is bolted to a winding shell (507).

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