Stress-free lens and rubber ring assembling device

Abstract

The invention discloses an unstressed lens and rubber ring assembling device, and relates to the technical field of combined assembly of technical lenses, the unstressed lens and rubber ring assembling device comprises a chassis, a rubber ring is mounted in the chassis, and a clamping and moving integrated assembly is arranged on the outer side of the rubber ring; the clamping and moving integrated assembly comprises a fixing part which is located at one end of the rubber ring and fixedly installed on the end face of the chassis, a driving part which is in sliding connection with the end face of the chassis is installed at the end of the other end of the rubber ring, and driven parts which are in sliding connection with the end face of the chassis are installed on the two sides of the rubber ring correspondingly. The bottom end of the driving part and the bottom end of the driven part are each provided with a sliding assembly so that the driving part and the driven part can move, and a driving assembly with the end extending to the outer side of the chassis is arranged in the chassis so that the driving part and the driven part can be driven. By arranging the clamping and moving integrated assembly, the assembling efficiency of the rubber ring and the lens can be greatly improved, and meanwhile the assembling quality is further improved by dedusting the rubber ring and compacting the rubber ring after assembling.

Description

Technical Field

[0001] The invention relates to the technical field of combined assembly of technical lenses, in particular to a stress-free lens and rubber ring assembly device. Background Art

[0002] Lenses are transparent materials with one or more curved surfaces. They adjust the light entering the eyes to correct vision, protect eye safety, or treat eye diseases clinically. Lenses can be divided into the following three types: glass lenses, resin lenses, and space lenses (PC lenses). The optical design of the lenses determines the visual effect. Common surface designs on the market include spherical lenses, aspherical lenses, double aspherical lenses, and multifocal progressive lenses. Stress-free lenses are lenses that have eliminated internal stress.

[0003] A rubber ring is a ring-shaped object made of rubber, which is often used to wrap around the outside of a component to protect the object or to provide a sealing effect at the installation location.

[0004] At present, the lens needs to be assembled with the rubber ring before assembly, so as to play a good protective effect on the lens and make the lens have better resistance to external forces. In the prior art, the assembly of the lens and the rubber ring is mostly performed manually, which is inefficient and will lead to uneven quality of the assembled lenses due to differences in the technical levels of the workers. For this reason, we propose a stress-free lens and rubber ring assembly device. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a stress-free lens and rubber ring assembly device to solve the technical problems in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stress-free lens and rubber ring assembly device, comprising a chassis, a rubber ring is installed inside the chassis, and a clamping and moving integrated component is arranged on the outside of the rubber ring, the clamping and moving integrated component includes a fixing part located at one end of the rubber ring and fixedly installed with the end face of the chassis, and a driving part slidably connected to the end face of the chassis is installed at the other end of the rubber ring, and driven parts slidably connected to the end face of the chassis are respectively installed on both sides of the rubber ring, and sliding components are installed at the bottom ends of the driving part and the driven part to realize the movement of the driving part and the driven part, and a driving component with an end extending to the outside of the chassis is arranged inside the chassis to realize the driving of the driving part and the driven part.

[0007] By adopting the above technical solution, the assembly efficiency of the rubber ring and the lens can be greatly improved, and the assembly quality can be further improved by dust removal of the rubber ring and compaction after assembly.

[0008] The present invention is further configured such that the fixing part includes a fixing part bottom plate fixed to the end surface of the chassis, and a fixing part pressure plate whose bottom end surface is fitted with the top end surface of the fixing part bottom plate is installed above the fixing part bottom plate, and a first cylinder for driving the fixing part pressure plate to move in a vertical direction is installed in the fixing part bottom plate, and the driving part includes a driving part bottom plate slidably connected to the end surface of the chassis, and a driving part pressure plate whose bottom end surface is fitted with the top end surface of the driving part bottom plate is installed above the driving part bottom plate, and a second cylinder for driving the driving part pressure plate to move in a vertical direction is installed in the driving part bottom plate.

[0009] By adopting the above technical solution, the rubber ring can be fixed and limited.

[0010] The present invention is further configured such that the driven part includes a driven part base plate slidably connected to the end surface of the chassis, and a driven part pressure plate whose bottom end surface is in contact with the top end surface of the driven part base plate is installed above the driven part base plate, and a third cylinder for moving the driven part pressure plate in a vertical direction is installed in the driven part base plate, and a first card slot and a second card slot are formed between the driven part pressure plate and the driven part base plate, the first card slot is opened on the inner side of the driven part pressure plate and the driven part base plate, and the second card slot is opened on the outer side of the driven part pressure plate and the driven part base plate.

[0011] By adopting the above technical solution, the rubber ring can be stretched transversely and dusted and assembled and compacted.

[0012] The present invention is further configured as follows: rollers are installed inside the driven part bottom plate and the driven part pressure plate in the first slot, and a part of the rollers extends to the outside, the rollers are provided in multiple groups and are distributed at intervals, and each group of the rollers in the driven part bottom plate is rotatably connected to the driven part bottom plate through bearings, and each group of the rollers in the driven part pressure plate is also rotatably connected to the driven part pressure plate through bearings, a bulge protruding outward is also provided on the inner end surface of the driven part bottom plate in the first slot, a dust suction component is installed on the inner end surface of the driven part bottom plate in the second slot, and there are two groups of dust suction components that are symmetrically arranged, and each group of the dust suction components is connected to the external gas supply system through a pipeline.

[0013] By adopting the above technical solution, the driven part is assisted in stable movement.

[0014] The present invention is further configured as follows: the sliding assembly includes a slider installed at the bottom ends of the driving part and the driven part, and an extension block integrated with the chassis is provided on the outer side of the slider, a slide groove adapted to the slider is provided inside the extension block, and a return spring is also installed in the slide groove, the slider includes a magnetic block fixed to the bottom ends of the driving part and the driven part, one end of the magnetic block is suction-connected to a first magnetic block, and the first magnetic block is installed in the inner wall of the chassis, the other end of the magnetic block is suction-connected to a second magnetic block fixedly connected to the end of the return spring, and the second magnetic block is installed in the slide groove.

[0015] By adopting the above technical solution, the movement of the auxiliary driving part and the driven part is achieved.

[0016] The present invention is further configured such that an electric guide rail is also installed on the end surface of the chassis, and the electric guide rail is arranged on the outside of the magnetic block and adapted to the magnetic block to realize driving of the magnetic block.

[0017] By adopting the above technical solution, a circular driving effect is achieved on the driven part.

[0018] The present invention is further configured such that the driving assembly includes a driving rod slidably connected to the inner wall of the chassis, and one end of the driving rod extends to the outside of the chassis, while the other end of the driving rod extends to the outer wall of the first magnetic block at the bottom of the driving part and is fixedly connected, driven rods are provided on both sides of the driving rod, and one end of the driven rod is provided close to the driving rod, while the other end of the driven rod extends to the outer wall of the first magnetic block at the bottom of the driven part and is fixedly connected, and an extrusion block is fixedly sleeved on the outer wall of the driving rod to realize extrusion drive of the driven rod.

[0019] By adopting the above technical solution, the driving effect of the driving part and the driven part is achieved.

[0020] In summary, the present invention mainly has the following beneficial effects: 1. The present invention sets a clamping and moving integrated component. First, the rubber ring to be assembled is installed in the device. Specifically, the first cylinder and the second cylinder are used to drive the pressure plates of the fixing part and the driving part to open, and then the two ends of the rubber ring are placed between the clamping plate and the bottom plate. The clamping plate is further closed by the cylinder to limit the end of the rubber ring. At the same time, the two sides of the rubber ring are pulled, and the elasticity of the rubber ring is used to sleeve the rubber ring into the second card groove on the outside of the driven part. At this time, the electric guide rail and the dust suction component are started. After the electric guide rail is running, it will drive the magnetic block to slide in its inner wall (the driving force of the electric guide rail on the magnetic block is greater than the magnetic attraction of the magnetic block), and the movement of the magnetic block will drive the driven part to move synchronously, so that the driven part will The driven part moves along the inner wall of the rubber ring on the inner side of the rubber ring. During the movement, the dust collecting component in the second card slot of the driven part will remove the dust and impurities in the inner wall of the rubber ring, thereby ensuring the subsequent assembly quality of the rubber ring and the lens. After the dust removal of the rubber ring is completed, the rubber ring is placed in the first card slot for clamping and limiting. After the assembly of the lens and the rubber ring is completed, the electric guide rail is started again to drive the driven part to move. At this time, the movement of the driven part will be squeezed along the engagement position of the rubber ring and the lens with the assistance of the roller, so that the rubber ring and the lens are more tightly engaged. At the same time, the protrusion located on the side of the first card slot will also squeeze the rubber ring from the outside, further improving the assembly tightness of the rubber ring and the lens, that is, the assembly quality; 2. The present invention provides an integrated clamping and moving component. When assembling the lens and the rubber ring, the driving rod is first pushed to move inward. The movement of the driving rod will push the driving part to move outward. At the same time, the extrusion block located on the outer wall of the driving rod will squeeze the driven rod to move to both sides, that is, drive the driven part to move outward, thereby achieving the purpose of expanding the inner diameter of the rubber ring. Subsequently, the lens to be assembled can be placed on the inner side of the rubber ring, and the limiting force on the driving rod is released. At this time, the driving part and the driven part will be quickly reset under the action of the reset spring, so the stretched rubber ring will also be quickly reset and complete the engagement and assembly with the lens in an instant, which is convenient and quick, and greatly improves the assembly efficiency of the lens and the rubber ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the chassis end surface structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the chassis of the present invention; Figure 4 An exploded view of the slider structure of the present invention; Figure 5 It is a schematic diagram of the structure of the fixing part of the present invention; Figure 6 It is a schematic diagram of the structure of the driving part of the present invention; Figure 7 This is a first perspective of the driven part structure of the present invention; Figure 8 This is a second viewing angle of the driven part structure of the present invention.

[0022] In the figure: 1, chassis; 2, rubber ring; 3, clamping and moving integrated assembly; 301, fixed part; 302, driving part; 303, driven part; 304, fixed part bottom plate; 305, fixed part pressure plate; 306, first cylinder; 307, driving part bottom plate; 308, driving part pressure plate; 309, second cylinder; 310, driven part bottom plate; 311, driven part pressure plate; 312, first slot; 313, third Cylinder; 314, roller; 315, bump; 316, second slot; 317, dust suction component; 4, sliding assembly; 401, slider; 4011, magnetic block; 4012, first magnetic block; 4013, second magnetic block; 402, extension block; 403, slide groove; 404, reset spring; 5, driving assembly; 501, driving rod; 502, driven rod; 503, extrusion block; 6, electric guide rail. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] The following describes an embodiment of the present invention based on its overall structure.

[0025] A stress-free lens and rubber ring assembly device, such as Figure 1-8 As shown, it includes a chassis 1, a rubber ring 2 is installed inside the chassis 1, and a clamping and moving integrated component 3 is arranged on the outside of the rubber ring 2; In this embodiment, the clamping and moving integrated component 3 includes a fixing portion 301 located at one end of the rubber ring 2 and fixedly installed with the end surface of the chassis 1, and the other end of the rubber ring 2 is equipped with a driving portion 302 that is slidably connected to the end surface of the chassis 1, and the two sides of the rubber ring 2 are respectively equipped with a driven portion 303 that is slidably connected to the end surface of the chassis 1.

[0026] See also Figure 1 , Figure 5 and Figure 6 , the fixing part 301 and the driving part 302 can stretch the rubber ring 2 in the length direction; Specifically, the fixed part 301 includes a fixed part bottom plate 304 fixed to the end surface of the chassis 1, and a fixed part pressure plate 305 whose bottom end surface is in contact with the top end surface of the fixed part bottom plate 304 is installed above the fixed part bottom plate 304, and a first cylinder 306 for driving the fixed part pressure plate 305 to move in the vertical direction is installed in the fixed part bottom plate 304, and the driving part 302 includes a driving part bottom plate 307 slidingly connected to the end surface of the chassis 1, and a driving part pressure plate 308 whose bottom end surface is in contact with the top end surface of the driving part bottom plate 307 is installed above the driving part bottom plate 307, and a second cylinder 309 for driving the driving part pressure plate 308 to move in the vertical direction is installed in the driving part bottom plate 307.

[0027] See also Figure 1 and Figure 7 , the driven part 303 will move synchronously when the driving part 302 moves, thereby achieving the stretching of the rubber ring 2 in the width direction; Specifically, the driven part 303 includes a driven part base plate 310 slidably connected to the end surface of the chassis 1, and a driven part pressure plate 311 whose bottom end surface is in contact with the top end surface of the driven part base plate 310 is installed above the driven part base plate 310, and a third cylinder 313 is installed in the driven part base plate 310 for moving the driven part pressure plate 311 in the vertical direction, and a first card groove 312 and a second card groove 316 are formed between the driven part pressure plate 311 and the driven part base plate 310, the first card groove 312 is opened on the inner side of the driven part pressure plate 311 and the driven part base plate 310, and the second card groove 316 is opened on the outer side of the driven part pressure plate 311 and the driven part base plate 310.

[0028] See also Figure 7-8 The driven part 303 is provided with two sets of slots, one set of slots is used to clamp and limit, and the other set of slots is used to clean the inner wall of the rubber ring; Specifically, rollers 314 are installed inside the driven part base plate 310 and the driven part pressure plate 311 in the first slot 312, and a part of the rollers 314 extends to the outside. There are multiple groups of rollers 314 and they are distributed at intervals. Each group of rollers 314 in the driven part base plate 310 is rotatably connected to the driven part base plate 310 through a bearing, and each group of rollers 314 in the driven part pressure plate 311 is also rotatably connected to the driven part pressure plate 311 through a bearing. A protruding block 315 protruding outward is also provided on the inner end surface of the driven part base plate 310 in the first slot 312. A dust suction component 317 is installed on the inner end surface of the driven part base plate 310 in the second slot 316. There are two groups of dust suction components 317 and they are symmetrically arranged. Each group of dust suction components 317 is connected to the external gas supply system through a pipeline.

[0029] See also Figure 2-4The slider 401 structure can assist the horizontal movement of the driving part 302 and the driven part 303, and can also assist the circular sliding of the driven part 303; Specifically, the sliding assembly 4 includes a slider 401 installed at the bottom ends of the driving part 302 and the driven part 303, and an extension block 402 integrated with the chassis 1 is arranged on the outer side of the slider 401, a slide groove 403 adapted to the slider 401 is opened inside the extension block 402, and a return spring 404 is also installed in the slide groove 403, the slider 401 includes a magnetic block 4011 fixed at the bottom ends of the driving part 302 and the driven part 303, one end of the magnetic block 4011 is attracted and connected to the first magnetic block 4012, and the first magnetic block 4012 is installed in the inner wall of the chassis 1, and the other end of the magnetic block 4011 is attracted and connected to the second magnetic block 4013 fixedly connected to the end of the return spring 404, and the second magnetic block 4013 is installed in the slide groove 403.

[0030] See also Figure 2 , the electric guide rail 6 cooperates with the magnetic block 4011 to drive the magnetic block 4011; Specifically, an electric guide rail 6 is also installed on the end surface of the chassis 1 , and the electric guide rail 6 is arranged on the outside of the magnetic block 4011 and is adapted to the magnetic block 4011 to realize driving of the magnetic block 4011 .

[0031] See also Figure 3 , the driving part 302 and the driven part 303 are driven by the movement of the driving rod 501; Specifically, the driving assembly 5 includes a driving rod 501 slidably connected to the inner wall of the chassis 1, and one end of the driving rod 501 extends to the outside of the chassis 1, and the other end of the driving rod 501 extends to the outer wall of the first magnetic block 4012 at the bottom of the driving part 302 and is fixedly connected, and driven rods 502 are arranged on both sides of the driving rod 501, and one end of the driven rod 502 is arranged close to the driving rod 501, and the other end of the driven rod 502 extends to the outer wall of the first magnetic block 4012 at the bottom of the driven part 303 and is fixedly connected, and an extrusion block 503 is fixedly sleeved on the outer wall of the driving rod 501 to realize the extrusion drive of the driven rod 502; The working principle of the present invention is as follows: first, the rubber ring 2 to be assembled is installed in the device. Specifically, the first cylinder 306 and the second cylinder 309 are used to drive the pressure plates of the fixing part 301 and the driving part 302 to open, and then the two ends of the rubber ring 2 are placed between the clamping plate and the bottom plate, and the clamping plate is further closed by the cylinder, so as to limit the end of the rubber ring 2; At the same time, the two sides of the rubber ring 2 are pulled, and the elasticity of the rubber ring 2 is used to sleeve the rubber ring 2 into the second slot 316 on the outer side of the driven part 303. At this time, the electric guide rail 6 and the dust suction component 317 are started. After the electric guide rail 6 is running, it will drive the magnetic block 4011 to slide in its inner wall (the driving force of the electric guide rail 6 on the magnetic block 4011 is greater than the magnetic attraction force on the magnetic block 4011), and the movement of the magnetic block 4011 will drive the driven part 303 to move synchronously, so the driven part 303 will move along the inner wall of the rubber ring 2 on the inner side of the rubber ring 2. During the movement, the dust suction component 317 in the second slot 316 of the driven part 303 will remove dust and impurities in the inner wall of the rubber ring 2, thereby ensuring the subsequent assembly quality of the rubber ring 2 and the lens; Furthermore, when assembling the lens and the rubber ring 2, the rubber ring 2 is placed in the first clamping groove 312 for clamping and limiting, and then the driving rod 501 is pushed to move inward, and the movement of the driving rod 501 will push the driving part 302 to move outward. At the same time, the extrusion block 503 located on the outer wall of the driving rod 501 will squeeze the driven rod 502 to move to both sides, that is, drive the driven part 303 to move outward, thereby achieving the purpose of expanding the inner diameter of the rubber ring 2. Then, the lens to be assembled can be placed on the inner side of the rubber ring 2, and the limiting force on the driving rod 501 is released. At this time, the driving part 302 and the driven part 303 will be quickly reset under the action of the reset spring 404, so the stretched rubber ring 2 will also be quickly reset and complete the clamping assembly with the lens in an instant, which is convenient and quick, and greatly improves the assembly efficiency of the lens and the rubber ring 2. It is worth noting that after the dust removal process of the rubber ring 2 is completed, the electric guide rail 6 is started again to drive the driven part 303 to move. At this time, the movement of the driven part 303 will be squeezed along the engagement position of the rubber ring 2 and the lens with the assistance of the roller 314, so that the rubber ring 2 and the lens are more tightly engaged. In addition, the protrusion 315 located on the side of the first slot 312 can also squeeze the rubber ring from the outside, further improving the assembly tightness of the rubber ring 2 and the lens, that is, further improving the assembly quality of the rubber ring 2 and the lens.

[0032] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A stress-free lens and rubber ring assembly device, comprising a chassis (1), characterized in that: A rubber ring (2) is installed inside the chassis (1), and a clamping and moving integrated component (3) is arranged on the outside of the rubber ring (2), the clamping and moving integrated component (3) comprising a fixing portion (301) located at one end of the rubber ring (2) and fixedly installed to the end surface of the chassis (1), and a driving portion (302) slidably connected to the end surface of the chassis (1) is installed at the other end of the rubber ring (2), and driven portions (303) slidably connected to the end surface of the chassis (1) are respectively installed on both sides of the rubber ring (2); The bottom ends of the driving part (302) and the driven part (303) are both installed with sliding components (4) to achieve the movement of the driving part (302) and the driven part (303); the interior of the chassis (1) is provided with a driving component (5) whose end extends to the outside of the chassis (1) to achieve the driving of the driving part (302) and the driven part (303).

2. The stress-free lens and rubber ring assembly device according to claim 1, characterized in that: The fixing part (301) comprises a fixing part bottom plate (304) fixed to the end surface of the chassis (1), and a fixing part pressure plate (305) whose bottom end surface is in contact with the top end surface of the fixing part bottom plate (304) is installed above the fixing part bottom plate (304), and a first cylinder (306) for driving the fixing part pressure plate (305) to move in a vertical direction is installed in the fixing part bottom plate (304), and the driving part (302) comprises a driving part bottom plate (307) slidably connected to the end surface of the chassis (1), and a driving part pressure plate (308) whose bottom end surface is in contact with the top end surface of the driving part bottom plate (307) is installed above the driving part bottom plate (307), and a second cylinder (309) for driving the driving part pressure plate (308) to move in a vertical direction is installed in the driving part bottom plate (307).

3. The stress-free lens and rubber ring assembly device according to claim 1, characterized in that: The driven part (303) comprises a driven part bottom plate (310) slidably connected to the end surface of the chassis (1), and a driven part pressure plate (311) whose bottom end surface is in contact with the top end surface of the driven part bottom plate (310) is installed above the driven part bottom plate (310), and a third cylinder (313) is installed in the driven part bottom plate (310) for moving the driven part pressure plate (311) in the vertical direction, and a first card slot (312) and a second card slot (316) are formed between the driven part pressure plate (311) and the driven part bottom plate (310), wherein the first card slot (312) is provided on the inner side of the driven part pressure plate (311) and the driven part bottom plate (310), and the second card slot (316) is provided on the outer side of the driven part pressure plate (311) and the driven part bottom plate (310).

4. The stress-free lens and rubber ring assembly device according to claim 3, characterized in that: Rollers (314) are installed inside the driven part bottom plate (310) and the driven part pressure plate (311) in the first slot (312), and a part of the rollers (314) extends to the outside. The rollers (314) are provided in multiple groups and are spaced apart. Each group of the rollers (314) in the driven part bottom plate (310) is rotatably connected to the driven part bottom plate (310) via a bearing, and each group of the rollers (314) in the driven part pressure plate (311) is also rotatably connected to the driven part pressure plate (311) via a bearing. A convex block (315) protruding outward is also provided on the inner end surface of the driven part bottom plate (310) in the first slot (312).

5. The stress-free lens and rubber ring assembly device according to claim 3, characterized in that: A dust collecting component (317) is installed on the inner end surface of the driven part bottom plate (310) in the second slot (316), and there are two groups of dust collecting components (317) which are symmetrically arranged, and each group of dust collecting components (317) is connected to an external gas supply system through a pipeline.

6. The stress-free lens and rubber ring assembly device according to claim 5, characterized in that: The sliding assembly (4) comprises a sliding block (401) installed at the bottom ends of the driving part (302) and the driven part (303), and an extension block (402) integrated with the chassis (1) is arranged on the outer side of the sliding block (401), and a sliding groove (403) adapted to the sliding block (401) is provided inside the extension block (402), and a return spring (404) is also installed in the sliding groove (403).

7. The stress-free lens and rubber ring assembly device according to claim 6, characterized in that: The slider (401) comprises a magnetic block (4011) fixed at the bottom of the driving part (302) and the driven part (303); one end of the magnetic block (4011) is attracted and connected to a first magnetic block (4012), and the first magnetic block (4012) is installed in the inner wall of the chassis (1); the other end of the magnetic block (4011) is attracted and connected to a second magnetic block (4013) fixedly connected to the end of the return spring (404), and the second magnetic block (4013) is installed in the slide groove (403).

8. The stress-free lens and rubber ring assembly device according to claim 7, characterized in that: An electric guide rail (6) is also installed on the end surface of the chassis (1), and the electric guide rail (6) is arranged on the outside of the magnetic block (4011) and is adapted to the magnetic block (4011) to achieve driving of the magnetic block (4011).

9. The stress-free lens and rubber ring assembly device according to claim 8, characterized in that: The driving assembly (5) comprises a driving rod (501) slidably connected to the inner wall of the chassis (1), and one end of the driving rod (501) extends to the outside of the chassis (1), while the other end of the driving rod (501) extends to the outer wall of the first magnetic block (4012) at the bottom end of the driving part (302) and is fixedly connected, and driven rods (502) are arranged on both sides of the driving rod (501), and one end of the driven rod (502) is arranged close to the driving rod (501), while the other end of the driven rod (502) extends to the outer wall of the first magnetic block (4012) at the bottom end of the driven part (303) and is fixedly connected, and an extrusion block (503) is fixedly sleeved on the outer wall of the driving rod (501) to realize extrusion drive of the driven rod (502).

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