Sausage multi-face blooming equipment
By using a saw wire and a combined drive flipping component in the sausage cutting equipment, the problem of brittle bone breakage was solved, enabling automated multi-faceted cutting of sausages and improving product consistency and cutting efficiency.
Patent Information
- Application Number
- CN202511616588.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2025-12-23
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional sausage cutting equipment often causes the cartilage to break when cutting sausages containing cartilage particles, affecting the product's appearance and texture consistency, and it is difficult to achieve automated multi-faceted cutting.
Using a saw wire as the cutting tool, combined with a drive component, a telescopic component, and a flipping component, it achieves uniform cutting force distribution and automatic flipping, avoiding brittle bone breakage and enabling multi-faceted cutting.
It significantly reduced the rate of bone breakage, improved the consistency of product appearance and taste, and enabled automated multi-station continuous cutting, reducing the need for manual intervention.
Smart Images
Figure CN121176491A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sausage processing technology, specifically to a sausage multi-faceted blooming device. Background Technology
[0002] In modern food processing, besides pursuing flavor, sausage products often enhance their appearance and market competitiveness through surface decoration or shaped cutting. Traditional sausage decoration mainly uses mechanical blades or forming molds to create regular patterns on the sausage surface through external pressure cutting. This type of equipment can achieve good shape results when processing ordinary sausages and has high production efficiency, so it is widely used in the meat processing industry.
[0003] However, in special products such as "cartilage sausages" containing cartilage particles or fragments, the raw material structure is complex, the elasticity coefficient is high, and the hardness of the internal inclusions differs significantly from that of the minced meat matrix. When traditional carving tools cut these sausages, the area of concentrated force between the blade and the sausage often acts directly on the cartilage particles or their surrounding tissue, causing the cartilage to break, crumble, or shift during cutting. This phenomenon not only damages the original tissue structure but also causes irregular tears at the cut, resulting in inconsistent depths of the patterns.
[0004] The breakage of cartilage can further affect the product's appearance, texture, and stability after heating. In continuous production environments, this type of damage often has a cumulative effect, reducing not only the consistency and controllability of the finished product.
[0005] Therefore, we propose a sausage multi-faceted flowering device. Summary of the Invention
[0006] The purpose of this invention is to provide a sausage multi-faceted blooming device to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a sausage multi-faceted blooming device, comprising: Conveying device; A support plate, wherein several sets of support plates are provided on the conveying device, and a connecting plate for placing sausages is provided on the support plate; A gantry frame, wherein an electric cylinder is provided in the middle of the gantry frame, a movable plate is fixedly connected to the end of the output shaft inside the electric cylinder, a connecting plate is provided on the lower side of the movable plate, and a flipping component is provided at both ends of the movable plate; A decorative blade assembly, wherein the decorative blade assembly is disposed on a movable plate, the decorative blade assembly includes: A fixed plate has several fixed rods arranged in an array on one side, a vertical plate on one side, and fixed rods two of the same number as the fixed rods fixedly connected to the lower side of the vertical plate. The vertical plate is slidably connected to the fixed plate. A saw wire is provided between the ends of the fixed rods one and two. A driving assembly is provided on the fixed plate to drive the saw wire to rotate when cutting. A telescopic assembly is provided on the fixed plate to straighten or loosen the saw wire. A pushing component is used to drive the fixed plate to move.
[0007] Preferably, the driving component includes: A rotating wheel is rotatably connected to a fixed rod one and a fixed rod two. The saw wire is fixedly connected to the rotating wheel. A first idler roller is fixedly connected to one end of the rotating wheel. A second idler roller is rotatably connected to the first idler roller. The first idler roller and the second idler roller are connected by a conveyor belt. A drive rod is fixedly connected to the second idler roller. Chain teeth are fixedly connected to the drive rod. The chain teeth between adjacent drive rods are connected by a chain. The third idler roller is rotatably connected to the second fixed rod. The third idler roller is connected to the first idler roller on the second fixed rod via a conveyor belt. The end of the drive rod away from the first fixed rod is fixedly connected to a movable rod. The movable rod has a non-circular cross-section and is slidably connected to the third idler roller.
[0008] Preferably, the telescopic component includes: Electric cylinder two is fixed to the top of the fixed plate. An insert is fixedly connected to the end of the output shaft inside the electric cylinder two. The insert is fixedly connected to the vertical plate.
[0009] Preferably, the actuating component includes: Electric cylinder three is fixedly connected to the moving plate, and the end of the internal output shaft of electric cylinder three is fixedly connected to the top of the fixed plate.
[0010] Preferably, the flipping component includes: The connecting plate has rotating rods fixedly connected to both ends. The rotating rods are rotatably connected to the bearing plate. A spiral spring is sleeved on the rotating rod. One end of the spiral spring is fixedly connected to the bearing plate, and the other end is fixedly connected to the rotating rod. The limiting rods are arranged symmetrically about the moving plate in two sets. The top of the limiting rods is fixedly connected to the moving plate, and the lower end of the limiting rods is rotatably connected to an internal rod. The internal rods are concentric with the rotating rods and are fixedly connected to a connecting plate. The outer wall of the rotating rods is circumferentially arranged with teeth. A servo motor is fixedly connected to the limiting rods. The end of the internal shaft of the servo motors is provided with a gear set, which is used to drive the rotating rods to rotate through the teeth.
[0011] This invention has at least the following beneficial effects: 1. By setting up a flower knife assembly and using a saw wire as the cutting body, the present invention makes the cutting force distribution more uniform, avoids local force concentration directly acting on brittle bone particles, and thus significantly reduces the brittle bone breakage rate.
[0012] Driven by the drive assembly, the saw wire operates in a rotating cutting manner. With the tension adjustment of the telescopic assembly, it can maintain a constant wire tension and cutting angle during the cutting process, effectively reducing the compression and tearing of sausage tissue, and making the patterned cuts neat and consistent in depth.
[0013] 2. In addition, the push component setting allows the saw wire to be released and withdrawn in time after cutting to prevent secondary cutting; the flip component realizes the automatic flipping of the sausage, enabling the equipment to continuously complete multi-sided patterning operations without manual intervention.
[0014] Through the above-mentioned structural combination, the present invention can not only maintain the integrity of the internal cartilage particles in the processing of sausages containing cartilage, significantly improving the appearance consistency and taste stability of the product, but also realize automated, multi-station continuous cutting, reducing the degree of manual intervention. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the flower knife assembly structure of the present invention; Figure 3 This is a schematic diagram of the fixing plate structure of the present invention; Figure 4 This is a schematic diagram of the drive component structure of the present invention; Figure 5 This is a schematic diagram of the movable rod structure of the present invention; Figure 6 This is a schematic diagram of the flip component structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram of section A; Figure 8 This is a schematic diagram of the connecting plate structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram of section B.
[0016] In the diagram: 10. Conveying device; 11. Bearing plate; 12. Connecting plate one; 13. Gantry frame; 14. Electric cylinder one; 15. Moving plate; 16. Connecting plate two; 20. Tilting assembly; 21. Rotating rod; 22. Spiral spring; 23. Limiting rod; 24. Internal rod; 25. Tooth; 26. Servo motor; 27. Gear set; 30. Frill assembly; 31. Fixing plate; 32. Fixing rod one; 33. Vertical plate; 34. Fixing rod two; 35. Saw wire; 36. Drive assembly; 361. Rotating wheel; 362. Idler roller one; 363. Idler roller two; 364. Drive rod; 365. Chain teeth; 366. Chain; 367. Idler roller three; 368. Movable rod; 37. Telescopic assembly; 371. Electric cylinder two; 372. Inserting part; 40. Pushing assembly; 41. Electric cylinder three. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] Please see Figure 1-9 This invention provides a technical solution: a sausage multi-faceted blooming device, comprising: Conveying device 10; The carrier plate 11 is provided on the conveying device 10 in several groups, and the carrier plate 11 is provided with a connecting plate 12 for placing sausages; A gantry frame 13 is provided with an electric cylinder 14 in the middle of the gantry frame 13. A movable plate 15 is fixedly connected to the end of the output shaft inside the electric cylinder 14. A connecting plate 16 is provided on the lower side of the movable plate 15. A flipping component 20 is provided at both ends of the movable plate 15. A decorative cutter assembly 30 is disposed on a movable plate 15. The decorative cutter assembly 30 includes: A fixed plate 31 is provided, with a plurality of fixed rods 32 arranged in an array on one side of the fixed plate 31. A vertical plate 33 is provided on one side of the fixed plate 31, and a number of fixed rods 34 of the same number as the fixed rods 32 are fixedly connected to the lower side of the vertical plate 33. The vertical plate 33 is slidably connected to the fixed plate 31. A saw wire 35 is provided between the ends of the fixed rods 32 and the fixed rods 34. A driving assembly 36 is provided on the fixed plate 31. The driving assembly 36 is used to drive the saw wire 35 to rotate when cutting. A telescopic assembly 37 is provided on the fixed plate 31. The telescopic assembly 37 is used to straighten or loosen the saw wire 35. A pushing component 40 is used to drive the fixed plate 31 to move. It should be noted that the sausage is first placed on the connecting plate 12. After the conveying device 10 is started, it drives the bearing plate 11 and the connecting plate 12 above it to move along the production line. When the sausage is conveyed to the bottom of the gantry frame 13, the electric cylinder 14 drives the moving plate 15 to move vertically downward through its output shaft, so that the connecting plate 16 below it overlaps with the connecting plate 12, thereby clamping and fixing the sausage to ensure its stable position during the cutting process.
[0019] After the sausage is stably positioned, the telescopic component 37 drives the fixed plate 31 to move diagonally downwards, so that the saw wire 35 on the lower side of the fixed plate 31 contacts the sausage surface. At this time, the drive component 36 starts, driving the saw wire 35 to rotate and cut, thereby forming a regular pattern on the sausage surface. After the cutting is completed, the push component 40 is activated to release the tension of the saw wire 35, and at the same time, the telescopic component 37 lifts the saw wire 35 away from the sausage surface, completing the pattern modification operation on one side.
[0020] Subsequently, the flipping component 20 drives the connecting plate 12 and the connecting plate 16 to flip as a whole, causing the sausage to automatically turn to the other side, and repeating the above cutting steps. Through this cyclical action, the decorative cutting process can be completed on both sides of the sausage in sequence, achieving uniform cutting on multiple sides; It is worth noting that by setting the flower knife assembly 30 and using the saw wire 35 as the cutting body, the present invention makes the cutting force distribution more uniform, avoids the local force concentration directly acting on the brittle bone particles, and thus significantly reduces the brittle bone breakage rate.
[0021] Driven by the drive assembly 36, the saw wire 35 operates in a rotary cutting manner. With the tension adjustment of the telescopic assembly 37, it can maintain a constant line tension and cutting angle during the cutting process, effectively reducing the compression and tearing of sausage tissue, and making the patterned cut neat and consistent in depth.
[0022] In addition, the setting of the push component 40 allows the saw wire 35 to be released and withdrawn in time after cutting to prevent secondary cutting; the flip component 20 realizes the automatic flipping of the sausage, enabling the equipment to continuously complete multi-sided patterning operations without manual intervention.
[0023] Through the above-mentioned structural combination, the present invention can not only maintain the integrity of the internal cartilage particles in the processing of sausages containing cartilage, significantly improving the appearance consistency and taste stability of the product, but also realize automated, multi-station continuous cutting, reducing the degree of manual intervention.
[0024] Further, as shown in Figure 2, it is worth noting that the driving component 36 includes: A rotating wheel 361 is rotatably connected to a first fixed rod 32 and a second fixed rod 34. The saw wire 35 is fixedly connected to the rotating wheel 361. A first idler roller 362 is fixedly connected to one end of the rotating wheel 361. A second idler roller 363 is rotatably connected to the first idler roller 362 on the first idler roller 362. The first idler roller 362 and the second idler roller 363 are connected by a conveyor belt. A drive rod 364 is fixedly connected to the second idler roller 363. Chain teeth 365 are fixedly connected to the drive rod 364. The chain teeth 365 between adjacent drive rods 364 are connected by a chain 366. The third idler roller 367 is rotatably connected to the second fixed rod 34. The third idler roller 367 is connected to the first idler roller 362 on the second fixed rod 34 via a conveyor belt. The drive rod 364 is fixedly connected to a movable rod 368 at the end away from the first fixed rod 32. The movable rod 368 has a non-circular cross-section and is slidably connected to the third idler roller 367. It should be noted that the drive assembly 36 is used to drive the saw wire 35 in the decorative knife assembly 30 to achieve stable rotational cutting. Specifically, the rotating wheel 361 is rotatably connected between the first fixed rod 32 and the second fixed rod 34, and the saw wire 35 is wound around and fixed to the rotating wheel 361. When the drive device is started, the rotating wheel 361 rotates with the driving force, thereby driving the saw wire 35 to form a continuous rotational motion to achieve cutting of the sausage surface.
[0025] One end of the rotating wheel 361 is fixedly connected to a first idler roller 362. The first idler roller 362 and the second idler roller 363 are connected by a conveyor belt. A drive rod 364 is provided on the second idler roller 363, and chain teeth 365 are fixed on the drive rod 364. The chain teeth 365 between adjacent drive rods 364 are connected to each other by a chain 366 to form a synchronous transmission mechanism. When one set of drive rods 364 is driven by power, the other drive rods 364 can maintain a consistent angular velocity through the chain 366, so as to realize the synchronous rotation of multiple saw lines 35.
[0026] In addition, a third idler roller 367 is installed on the fixed rod 34. The third idler roller 367 is connected to the first idler roller 362 via a conveyor belt to ensure the smooth tension of the saw wire 35 during operation. A movable rod 368 is fixedly connected to the end of the drive rod 364 away from the fixed rod 32. The movable rod 368 slides with the third idler roller 367 and has a non-circular cross-section. The movable rod 368 works in conjunction with the telescopic assembly 37. When the telescopic assembly 37 drives the vertical plate 33 to move relative to the fixed plate 31, the third idler roller 367 can move synchronously along the movable rod 368. At the same time, due to the non-circular cross-section design of the movable rod 368, the movable rod 368 can also drive the third idler roller 367 to rotate accordingly during the sliding process of the third idler roller 367, thereby ensuring that the saw wire 35 always maintains smooth movement when switching between tensioned and relaxed states. Further, as shown in Figures 3, 4, and 5, it is worth noting that the telescopic component 37 includes: Electric cylinder 371 is fixed to the top of the fixed plate 31. An insert 372 is fixedly connected to the end of the output shaft inside the electric cylinder 371. The insert 372 is fixedly connected to the vertical plate 33. It should be noted that the telescopic component 37 is mainly used to adjust the tension of the saw wire 35 after it has finished cutting, so as to prevent secondary cutting when the saw wire exits the sausage.
[0027] The telescopic assembly 37 includes an electric cylinder 371 fixedly installed on the top of the fixed plate 31. An insert 372 is fixedly connected to the end of the output shaft of the electric cylinder 371, and the insert 372 is fixedly connected to the vertical plate 33.
[0028] When the output shaft of the second electric cylinder 371 extends, it causes the vertical plate 33 to move away from the fixed plate 31, which in turn moves the second fixed rod 34, thereby applying tension to the saw wire 35 and keeping it taut so as to maintain a stable linear speed and cutting force during the cutting stage.
[0029] After the saw wire 35 finishes cutting, the electric cylinder 371 reverses its movement, causing the vertical plate 33 to move closer to the fixed plate 31, thus changing the saw wire 35 from a tensioned state to a relaxed state.
[0030] At this point, the saw wire 35 can smoothly detach from the sausage surface with relatively low friction, avoiding secondary cutting or tearing caused by continuous tension, thereby protecting the integrity of the sausage surface pattern and the stability of the cartilage tissue.
[0031] Therefore, the telescopic component 37 plays a coordinating role of "tensioning when cutting in and relaxing when exiting" throughout the entire cutting cycle, ensuring that the saw wire 35 can achieve both efficient cutting and safe repositioning.
[0032] Further, as shown in Figure 3, it is worth noting that the pushing component 40 includes: Electric cylinder 3 41, which is fixedly connected to the movable plate 15, and the end of the internal output shaft of electric cylinder 3 41 is fixedly connected to the top of the fixed plate 31; It should be noted that the pushing component 40 is used to drive the fixed plate 31 to reciprocate relative to the moving plate 15.
[0033] The pushing assembly 40 includes an electric cylinder 31, which is fixedly mounted on the movable plate 15, and its output shaft end is fixedly connected to the top of the fixed plate 31.
[0034] During the operation of the equipment, when the electric cylinder 341 extends, it drives the fixed plate 31 to move along the preset direction, so that the saw line 35 in the flower knife assembly 30 can cut the sausage at different positions at the same time. When the electric cylinder 31 retracts, the fixed plate 31 returns to its initial position, preparing for the next cutting cycle.
[0035] This reciprocating motion allows for continuous cutting of multiple segments or surfaces in a single clamping operation, improving processing efficiency.
[0036] Meanwhile, the electric cylinder 341 can be synchronously controlled with the operating cycle of the conveying device 10 to ensure that the moving direction of the scissor assembly 30 matches the conveying direction, thus avoiding cutting deviation or positional error.
[0037] Further, as shown in Figures 7, 8, and 9, it is worth noting that the flipping component 20 includes: The connecting plate 12 is fixedly connected to two ends of a rotating rod 21. The rotating rod 21 is rotatably connected to the bearing plate 11. A spiral spring 22 is sleeved on the rotating rod 21. One end of the spiral spring 22 is fixedly connected to the bearing plate 11, and the other end is fixedly connected to the rotating rod 21. Limiting rods 23 are provided in two sets symmetrically about the moving plate 15. The top end of the limiting rods 23 is fixedly connected to the moving plate 15, and the lower end of the limiting rods 23 is rotatably connected to an internal rod 24. The internal rod 24 is concentric with the rotating rod 21 and is fixedly connected to the connecting plate 16. The outer wall of the rotating rod 21 is provided with a circumferential array of teeth 25. A servo motor 26 is fixedly connected to the limiting rods 23. The end of the internal shaft of the servo motor 26 is provided with a gear set 27, which is used to drive the rotating rod 21 to rotate through the teeth 25. It should be noted that the flipping component 20 is used to drive the connecting plate 12 and the connecting plate 2 16 to flip as a whole, thereby realizing double-sided or multi-sided decorative cutting of the sausage.
[0038] The two ends of the connecting plate 12 are fixedly connected to rotating rods 21, which are rotatably connected to the bearing plate 11.
[0039] A spiral spring 22 is sleeved on the outside of the rotating rod 21. One end of the spiral spring 22 is fixedly connected to the bearing plate 11, and the other end is fixedly connected to the rotating rod 21. It is used to provide a rebound force after the flipping is completed, so that the connecting plate 12 and the connecting plate 26 can automatically return to their initial positions.
[0040] Two sets of limiting rods 23 are symmetrically arranged about the moving plate 15. The top end of the limiting rod 23 is fixedly connected to the moving plate 15, and the lower end is rotatably connected to the built-in rod 24. The built-in rod 24 is concentric with the rotating rod 21 and is fixedly connected to the connecting plate 16.
[0041] The outer circumference of the rotating rod 21 is provided with teeth 25 arranged in an array. A servo motor 26 is installed on the limiting rod 23. The end of the rotating shaft of the servo motor 26 is provided with a gear set 27. The gear set 27 meshes with the teeth 25. The forward and reverse rotation of the servo motor 26 realizes precise angle control of the rotating rod 21.
[0042] During equipment operation, after the sausage is cut and patterned on one side, the servo motor 26 starts and drives the gear set 27 to rotate, thereby causing the rotating rod 21 to rotate, so that the connecting plate 12 and the connecting plate 26 are rotated at a certain angle, usually 180°, so that the other side of the sausage faces upward.
[0043] After the device flips to the correct position, the servo motor 26 stops running. During this process, the spiral spring 22 stores energy and releases it during the return stroke, achieving a smooth reset.
[0044] Through this cycle of action, the equipment can continuously complete the double-sided decoration process for sausages.
[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, all of which fall within the scope of protection of the present invention.
Claims
1. A sausage multi-faceted blooming device, characterized in that, include: Conveying device (10); The carrier plate (11) is provided on the conveying device (10) in several groups, and the carrier plate (11) is provided with a connecting plate (12) for placing sausages. A gantry frame (13) is provided with an electric cylinder (14) in the middle of the gantry frame (13). A movable plate (15) is fixedly connected to the end of the output shaft inside the electric cylinder (14). A connecting plate (16) is provided on the lower side of the movable plate (15). A flipping component (20) is provided at both ends of the movable plate (15). A decorative knife assembly (30) is disposed on a movable plate (15), and the decorative knife assembly (30) includes: A fixed plate (31) is provided with a plurality of fixed rods (32) arranged in an array on one side of the fixed plate (31). A vertical plate (33) is provided on one side of the fixed plate (31). A number of fixed rods (34) equal to the number of fixed rods (32) are fixedly connected to the lower side of the vertical plate (33). The vertical plate (33) is slidably connected to the fixed plate (31). A saw wire (35) is provided between the ends of the fixed rods (32) and the fixed rods (34). A drive assembly (36) is provided on the fixed plate (31). The drive assembly (36) is used to drive the saw wire (35) to rotate when cutting. A telescopic assembly (37) is provided on the fixed plate (31). The telescopic assembly (37) is used to straighten or loosen the saw wire (35). A push component (40) is used to drive the fixed plate (31) to move.
2. The sausage multi-faceted blooming device according to claim 1, characterized in that: The driving component (36) includes: A rotating wheel (361) is rotatably connected to a fixed rod (32) and a fixed rod (34). The saw wire (35) is fixedly connected to the rotating wheel (361). A roller (362) is fixedly connected to one end of the rotating wheel (361). A roller (363) is rotatably connected to the fixed rod (32) on the roller (362). The roller (362) and the roller (363) are connected by a conveyor belt. A drive rod (364) is fixedly connected to the roller (363). A chain tooth (365) is fixedly connected to the drive rod (364). The chain teeth (365) between adjacent drive rods (364) are connected by a chain (366). The third idler roller (367) is rotatably connected to the second fixed rod (34). The third idler roller (367) is connected to the first idler roller (362) on the second fixed rod (34) via a conveyor belt. A movable rod (368) is fixedly connected to one end of the drive rod (364) away from the first fixed rod (32). The movable rod (368) has a non-circular cross-section and is slidably connected to the third idler roller (367).
3. The sausage multi-faceted blooming device according to claim 2, characterized in that: The telescopic component (37) includes: Electric cylinder two (371) is fixed to the top of the fixed plate (31). An insert (372) is fixedly connected to the end of the output shaft inside the electric cylinder two (371). The insert (372) is fixedly connected to the vertical plate (33).
4. The sausage multi-faceted blooming device according to claim 3, characterized in that: The actuation component (40) includes: Electric cylinder three (41) is fixedly connected to the moving plate (15), and the end of the internal output shaft of the electric cylinder three (41) is fixedly connected to the top of the fixed plate (31).
5. The sausage multi-faceted blooming device according to claim 4, characterized in that: The flipping component (20) includes: The connecting plate (12) is fixedly connected to two ends of a rotating rod (21). The rotating rod (21) is rotatably connected to the bearing plate (11). The rotating rod (21) is fitted with a spiral spring (22). One end of the spiral spring (22) is fixedly connected to the bearing plate (11), and the other end is fixedly connected to the rotating rod (21). The limiting rod (23) is symmetrically arranged in two sets about the moving plate (15). The top of the limiting rod (23) is fixedly connected to the moving plate (15). The lower end of the limiting rod (23) is rotatably connected to the built-in rod (24). The built-in rod (24) is concentric with the rotating rod (21). The built-in rod (24) is fixedly connected to the connecting plate (16). The outer wall of the rotating rod (21) is arranged with teeth (25) in a circular array. The limiting rod (23) is fixedly connected to the servo motor (26). The end of the rotating shaft inside the servo motor (26) is provided with a gear set (27). The gear set (27) is used to drive the rotating rod (21) to rotate through the teeth (25).