Code spraying device for processing leisure food
By introducing adjustment mechanism and detection mechanism into the injection coding device, the problem of the injection wharf being fixed in the intermediate position is solved, flexible adaptation to packaging materials of different shapes and positions and marking quality inspection are achieved, and production efficiency and product consistency are improved.
Patent Information
- Application Number
- CN202420974754.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The injection terminal of the existing snack food injection coding device is fixed in the middle position and cannot be flexibly adjusted, resulting in the inability to adapt to packaging materials of different shapes, sizes or locations, limiting the flexibility and diversity of injection coding, increasing the complexity of the production line and Cost, reduces production efficiency.
A injection coding device including an adjustment mechanism is designed to adjust the height and lateral position of the injection dock by arranging components, lifting components and translation components, adapting to packaging materials of different shapes, sizes or positions, and detecting the injection coding quality through the detection mechanism. , ensure the accuracy and consistency of markings.
It improves the flexibility and adaptability of injection coding, adapts to different production line requirements and environments, improves production efficiency and production line stability, reduces manual inspection time and cost, and ensures product quality.
Smart Images

Figure CN222246595U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of leisure food processing, in particular to a coding device for processing leisure food. Background Art
[0002] In the prior art, after searching, it was found that a Chinese patent disclosed "a coding device for processing leisure foods", and its application number is "CN202321977489.9". This patent mainly provides a guide structure to facilitate the guidance of the items in transportation, so as to facilitate the coding corresponding to the inkjet printer nozzle, prevent leakage or uneven coding positions affecting the coding quality, and provide a movable guide plate to facilitate the adjustment of the gap between the two guide plates, thereby facilitating the guided transportation of items of different sizes and types.
[0003] However, the connection between the guide mechanism and the inkjet printing terminal in the device makes the inkjet printing terminal of the device always located in the middle of the guide plate gap. The ability to print codes only in the middle position limits the marking position on the package and cannot meet specific needs or design requirements, affecting the flexibility and diversity of inkjet printing. If marking is required at other locations on the package, additional manual adjustments may be required, increasing secondary operations and processing steps on the production line, reducing production efficiency, and being unable to adapt to packages of different types or shapes. A different inkjet printing device needs to be designed for each product, increasing the complexity and cost of the production line. Utility Model Content
[0004] The utility model aims to provide a coding device for processing leisure food. By providing an adjustment mechanism, products can be arranged on a conveyor belt by themselves. The height and lateral position of the coding terminal can be adjusted as needed to adapt to packages of different shapes, sizes or positions, thereby improving the flexibility and adaptability of coding and enabling the coding device to adapt to the requirements and environments of different production lines. Whether it is a high-speed production line or a special process requirement, corresponding adjustments can be made, thereby improving the adaptability and versatility of the device, greatly improving the production efficiency and the stability of the production line, and solving the problem that the existing device is limited to coding in the middle position, thereby reducing the production efficiency.
[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0006] The utility model is a coding device for processing leisure food, comprising a base and a support frame, wherein an adjustment mechanism is arranged on the base;
[0007] Furthermore, the adjustment mechanism includes an arranging component, a lifting component and a translation component, the arranging component includes two first sliding grooves opened on the top support frame, the inner wall of the first sliding groove is slidably connected with a sliding rod, the inner wall of the support frame is fixedly connected with a base plate, the top surface of the base plate is fixedly connected with a first fixed rod, the top end of the first fixed rod is hinged to the left end of the adjustment plate, the right end of the adjustment plate is rotatably connected to the first connecting rod, the top end of the first connecting rod is hinged to the right end of the connecting rod, and the left end of the connecting rod is hinged to the top end of the sliding rod.
[0008] Furthermore, the lifting assembly includes two outer frames fixedly connected to the top surface of the base, and two electric cylinders are fixedly connected to the top surface of the base, and the two electric cylinders are both located on the inner side of the outer frames.
[0009] Furthermore, the translation assembly includes a fixed plate fixedly connected to the output end of the electric cylinder, a plurality of second sliding grooves are opened on the fixed plate, a connecting block is slidably connected to the inner wall of the second sliding groove, a second connecting rod is fixedly connected to the left and right sides of the connecting block, the second connecting rod is slidably connected to the inner wall of the second sliding groove, the left end of the second connecting rod is fixedly connected to the fixed block, the bottom surface of the connecting block is fixedly connected to the fixed platform, the top surface of the fixed plate is fixedly connected to the first motor, the output end of the first motor is fixedly connected to a threaded rod, the threaded rod passes through the connecting block, and the threaded rod is threadedly connected to the connecting block.
[0010] Furthermore, a coding mechanism is arranged on the base, and the coding mechanism includes two fixing frames fixedly connected to the right side surface of the fixing platform, bolts are threadedly connected between the two fixing frames, a coding terminal is slidably connected to the inner wall of the fixing frame, an inkjet terminal is fixedly connected to the top of the coding terminal, an ink supply tube is fixedly connected to the base, and an ink storage tank is fixedly connected to the base, and one end of the ink supply tube away from the coding terminal extends into the ink storage tank.
[0011] Furthermore, a transmission mechanism is provided on the base, and the transmission mechanism includes a driving assembly and a transmission assembly, and the driving assembly includes a second motor fixedly connected to the front side of the support frame, and the output end of the second motor is fixedly connected to a driving rod, and the rear end of the driving rod extends to the inner wall of the support frame, and the rear end of the driving rod is rotatably connected to the inner wall of the support frame.
[0012] Furthermore, the transmission assembly includes a third connecting rod rotatably connected to the inner wall of the support frame, and a first transmission belt is sleeved between the third connecting rod and the driving rod.
[0013] Furthermore, a detection mechanism is provided on the base, and the detection mechanism includes a detection component and a reflux component. The detection component includes a detector fixedly connected to the top of the support frame. A plurality of hydraulic cylinders are fixedly connected to the base, and the output ends of the plurality of hydraulic cylinders are fixedly connected to a first connecting block, the first connecting block is hinged to the bottom end of the second connecting block, the top of the second connecting block is fixedly connected to a classification table, and a storage box is provided on the top surface of the base.
[0014] Further, the reflux assembly includes a fourth connecting rod rotatably connected to the inner wall of the support frame, the inner wall of the support frame is rotatably connected to a fifth connecting rod, the front end of the fifth connecting rod extends to the front surface of the support frame, the front end of the fifth connecting rod is fixedly connected to the first gear, the front end of the third connecting rod extends to the front surface of the support frame, the front end of the third connecting rod is fixedly connected to the first pulley, the front side of the support frame is fixedly connected to a fixing rod, the fixing rod is rotatably connected to a second pulley, the front end of the fixing rod is rotatably connected to a second gear, a belt is sleeved between the first pulley and the second pulley, the second gear is meshed with the first gear, and a second transmission belt is sleeved between the fourth connecting rod and the fifth connecting rod.
[0015] The utility model has the following beneficial effects:
[0016] 1. By setting up the adjustment mechanism, the products can be arranged neatly by themselves when passing through the adjustment plate on the conveyor belt, and the height of the spray terminal can be adjusted by two electric cylinders. The lateral position of the spray terminal can be adjusted by motors, threaded rods and other accessories to adapt to packaging of different shapes, sizes or positions, thereby improving the flexibility and adaptability of inkjet coding, and enabling the inkjet coding device to adapt to the requirements and environments of different production lines. Whether it is a high-speed production line or special process requirements, corresponding adjustments can be made, which improves the adaptability and versatility of the device, and greatly improves the production efficiency and stability of the production line.
[0017] 2. By setting up a detection mechanism, the marking quality during the coding process can be detected to ensure that each product can be marked correctly. It can timely discover possible errors in the coding process, such as missing codes, misalignment or ambiguity, to avoid defective products from entering the market or causing customer complaints. It can help reduce the time and cost of manual inspection and improve the efficiency and capacity of the production line.
[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 It is a structural schematic diagram of the arrangement components of the utility model;
[0022] Figure 3 This is a schematic diagram of the structure of the gear component of the utility model;
[0023] Figure 4 This is a schematic diagram of the internal structure of the utility model;
[0024] Figure 5 For this utility model Figure 1 A is a schematic diagram of the partially enlarged structure of the middle part;
[0025] Figure 6 For this utility model Figure 2 A schematic diagram of the partially enlarged structure of B in the middle;
[0026] Figure 7 For this utility model Figure 4 Schematic diagram of the partially enlarged structure of C in the middle.
[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0028] 1. Base; 2. Support frame; 3. First slide; 4. Slide rod; 5. Bottom plate; 6. First fixing rod; 7. Adjustment plate; 8. First connecting rod; 9. Connecting rod; 10. Outer frame; 11. Electric cylinder; 12. Fixing plate; 13. Second slide; 14. Connecting block; 15. Second connecting rod; 16. Fixing block; 17. Fixing table; 18. First motor; 19. Threaded rod; 20. Fixing frame; 21. Bolt; 22. Inkjet terminal; 23. Ink delivery tube; 24 , ink storage box; 25, second motor; 26, driving rod; 27, third connecting rod; 28, first transmission belt; 29, detector; 30, hydraulic cylinder; 31, first connecting block; 32, second connecting block; 33, sorting table; 34, storage box; 35, fourth connecting rod; 36, fifth connecting rod; 37, first gear; 38, first pulley; 39, fixing rod; 40, second pulley; 41, second gear; 42, belt; 43, second transmission belt. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] See also Figure 1-7 As shown, the utility model is a coding device for processing leisure food, comprising a base 1 and a support frame 2, and an adjustment mechanism is arranged on the base 1;
[0031] Among them Figure 1 and Figure 2 As shown, the adjustment mechanism includes an arranging component, a lifting component and a translation component. The arranging component includes two first slide grooves 3 opened on the top surface support frame 2. The inner wall of the first slide groove 3 is slidably connected with a slide rod 4. The inner wall of the support frame 2 is fixedly connected with a base plate 5. The top surface of the base plate 5 is fixedly connected with a first fixed rod 6. The top end of the first fixed rod 6 is hinged to the left end of the adjustment plate 7. The right end of the adjustment plate 7 is rotatably connected to the first connecting rod 8. The top end of the first connecting rod 8 is hinged to the right end of the connecting rod 9. The left end of the connecting rod 9 is hinged to the top of the sliding rod 4.
[0032] By providing an arranging component, the distance between the two adjustment plates 7 can be freely adjusted, so that the materials can be neatly arranged after passing between the two adjustment plates 7, thereby reducing the need for manual intervention, reducing labor costs, and ensuring the accuracy and consistency of coding.
[0033] Among them Figure 1 and Figure 3 As shown, the lifting assembly includes two outer frames 10 fixedly connected to the top surface of the base 1 , and two electric cylinders 11 are fixedly connected to the top surface of the base 1 . Both electric cylinders 11 are located inside the outer frames 10 .
[0034] By providing a lifting assembly and cooperating with two electric cylinders 11, the height of the fixed plate 12 on the electric cylinder 11 can be freely adjusted, so that the device can adapt to foods of different sizes and shapes. Regardless of size, it can be accurately marked, thereby improving the accuracy and clarity of the marking, and there is no need to replace equipment due to the size of the food, thereby improving the flexibility and production efficiency of the production line.
[0035] Among them Figure 1 and Figure 5As shown, the translation assembly includes a fixed plate 12 fixedly connected to the output end of the electric cylinder 11, a plurality of second slide grooves 13 are opened on the fixed plate 12, a connecting block 14 is slidably connected to the inner wall of the second slide groove 13, a second connecting rod 15 is fixedly connected to the left and right sides of the connecting block 14, the second connecting rod 15 is slidably connected to the inner wall of the second slide groove 13, the left end of the second connecting rod 15 is fixedly connected to a fixed block 16, a fixed platform 17 is fixedly connected to the bottom surface of the connecting block 14, a first motor 18 is fixedly connected to the top surface of the fixed plate 12, a threaded rod 19 is fixedly connected to the output end of the first motor 18, the threaded rod 19 passes through the connecting block 14, and the threaded rod 19 is threadedly connected to the connecting block 14.
[0036] By providing a translation component, the first motor 18 drives the threaded rod 19 to drive the connecting block 14 to adjust laterally on the fixed plate 12, which can adapt to the marking requirements of different positions. Whether it is at the center or edge of the food package, it can be accurately marked. The component is driven by a motor and is easy to operate, which improves the operational convenience of the production line.
[0037] Among them Figure 2 , Figure 5 and Figure 6 As shown, a coding mechanism is provided on the base 1, and the coding mechanism includes two fixing frames 20 fixedly connected to the right side surface of the fixing platform 17, a bolt 21 is threadedly connected between the two fixing frames 20, a coding terminal 22 is slidably connected to the inner wall of the fixing frame 20, an inkjet terminal 22 is fixedly connected to the top of the inkjet terminal 22, an ink supply tube 23 is fixedly connected to the base 1, and an ink storage box 24 is fixedly connected to the base 1, and the end of the ink supply tube 23 away from the inkjet terminal 22 extends into the ink storage box 24.
[0038] By providing a coding mechanism, the coding terminal 22 is fixed to the fixing platform 17 by the fixing frame 20 and the bolts 21. The coding terminal 22 is fixed by bolts, which is simple and easy to disassemble, and is convenient for cleaning and maintenance of the coding terminal 22 at a later time. In addition, the types of food coding are various, and the coding terminal is convenient to replace, thereby improving the adaptability and diversity of product marking.
[0039] Among them Figure 4 and Figure 3 As shown, a transmission mechanism is provided on the base 1, and the transmission mechanism includes a driving assembly and a transmission assembly. The driving assembly includes a second motor 25 fixedly connected to the front face of the support frame 2, and a driving rod 26 is fixedly connected to the output end of the second motor 25. The rear end of the driving rod 26 extends to the inner wall of the support frame 2, and the rear end of the driving rod 26 is rotatably connected to the inner wall of the support frame 2. The transmission assembly includes a third connecting rod 27 rotatably connected to the inner wall of the support frame 2, and a first transmission belt 28 is sleeved between the third connecting rod 27 and the driving rod 26.
[0040] By providing a transmission mechanism, the second motor 25 drives the driving rod 26 to rotate, and the driving rod 26 drives the third connecting rod 27 to rotate through the first transmission belt 28, so that the product can be transmitted to the location of the spraying terminal through the first transmission belt 28, and the operation is automated, which reduces labor costs and improves production efficiency and capacity.
[0041] Among them Figure 1 and Figure 4 As shown, a detection mechanism is provided on the base 1, and the detection mechanism includes a detection component and a reflux component. The detection component includes a detector 29 fixedly connected to the top of the support frame 2. A plurality of hydraulic cylinders 30 are fixedly connected to the base 1, and the output ends of the plurality of hydraulic cylinders 30 are fixedly connected to a first connecting block 31. The first connecting block 31 is hinged to the bottom end of the second connecting block 32, and the top of the second connecting block 32 is fixedly connected to a classification table 33. A storage box 34 is provided on the top surface of the base 1.
[0042] By providing a detection component, the food enters the detector 29 after coding, and the marking quality of the coding can be detected to ensure that each product can be correctly marked, thereby improving product quality and consistency, and being able to promptly detect possible errors that may occur during the coding process, such as missing codes, misalignment or ambiguity, to avoid defective products from entering the market or causing customer complaints.
[0043] Among them Figure 3 and Figure 4 As shown, the reflux assembly includes a fourth connecting rod 35 rotatably connected to the inner wall of the support frame 2, the inner wall of the support frame 2 is rotatably connected to the fifth connecting rod 36, the front end of the fifth connecting rod 36 extends to the front surface of the support frame 2, the front end of the fifth connecting rod 36 is fixedly connected to the first gear 37, the front end of the third connecting rod 27 extends to the front surface of the support frame 2, the front end of the third connecting rod 27 is fixedly connected to the first pulley 38, the front of the support frame 2 is fixedly connected to a fixed rod 39, the fixed rod 39 is rotatably connected to the second pulley 40, the front end of the fixed rod 39 is rotatably connected to the second gear 41, a belt 42 is sleeved between the first pulley 38 and the second pulley 40, the second gear 41 is meshed with the first gear 37, and a second transmission belt 43 is sleeved between the fourth connecting rod 35 and the fifth connecting rod 36.
[0044] By providing a reflux component, when the detector 29 detects unqualified products, the four hydraulic cylinders 30 can respond quickly to adjust the height and tilt angle of the classification table 33 to ensure that the unqualified products can be transmitted to the left side of the device through the second conveyor belt 43 to be re-coded. There is no need to manually sort out unqualified products. Automatic reflux also avoids the need for manual sorting after unqualified products are mixed with qualified products, saving labor costs and improving production efficiency.
[0045] A specific application of this embodiment is: when the device is working, the second motor 25 drives the driving rod 26 to rotate, the driving rod 26 drives the third connecting rod 27 to rotate through the first transmission belt 28, the third connecting rod 27 drives the fifth connecting rod 36 to rotate in the opposite direction through the pulley and the gear, the fifth connecting rod 36 drives the fourth connecting rod 35 to rotate through the second transmission belt 43, and the distance between the two adjustment plates 7 can be freely adjusted through the first slide groove 3, the slide rod 4, the adjustment plate 7, the connecting rod 9, the first connecting rod 8 and the first fixed rod 6 on both sides of the first transmission belt 28, so that the food that needs to be coded can be neatly arranged on the first transmission belt 28, which is convenient for the inkjet printer to spray code, and the electric cylinders 11 on both sides of the device are convenient for adjusting the distance between the spraying ports and the required coding products. The distance between the products and the first motor 18 drives the threaded rod 19 to rotate. Through the cooperation between the various connecting blocks, the lateral position of the inkjet terminal can be freely adjusted. The adjustment mechanism can adapt to different product sizes and required coding positions. No additional tools are required, which improves the convenience of operation. The inkjet terminal 22 is fixed to the fixed platform 17 by bolts 21, which is convenient for later disassembly, cleaning and replacement. The raw materials required for coding in the ink storage box 24 can be input into the inkjet terminal 22 by the ink supply pipe 23. After the coding is completed, the coding situation is detected by the detector 29. When the coding is qualified, the two positions on the left side of the four hydraulic cylinders 30 will be lower than the right side, which is convenient for the product to slide into the storage box 34. Otherwise, it is transmitted to the right side of the device through the second conveyor belt 43 for secondary coding.
[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0047] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A coding device for processing snack foods, comprising a base (1) and a support frame (2), characterized in that: The base (1) is provided with an adjustment mechanism; The adjustment mechanism comprises an arrangement component, a lifting component and a translation component. The arrangement component comprises two first slide grooves (3) opened on the top support frame (2). The inner wall of the first slide groove (3) is slidably connected with a slide rod (4). The inner wall of the support frame (2) is fixedly connected with a bottom plate (5). The top surface of the bottom plate (5) is fixedly connected with a first fixed rod (6). The top end of the first fixed rod (6) is hinged to the left end of the adjustment plate (7). The right end of the adjustment plate (7) is rotatably connected with a first connecting rod (8). The top end of the first connecting rod (8) is hinged to the right end of the connecting rod (9). The left end of the connecting rod (9) is hinged to the top end of the sliding rod (4).
2. A coding device for processing leisure food according to claim 1, characterized in that: The lifting assembly comprises two outer frames (10) fixedly connected to the top surface of a base (1); the top surface of the base (1) is fixedly connected to two electric cylinders (11); the two electric cylinders (11) are both located inside the outer frames (10).
3. A coding device for processing leisure food according to claim 2, characterized in that: The translation assembly comprises a fixed plate (12) fixedly connected to the output end of the electric cylinder (11), the fixed plate (12) being provided with a plurality of second slide grooves (13), the inner wall of the second slide groove (13) being slidably connected to a connecting block (14), the left and right sides of the connecting block (14) being fixedly connected to second connecting rods (15), the second connecting rod (15) being slidably connected to the inner wall of the second slide groove (13), the left end of the second connecting rod (15) being fixedly connected to a fixed block (16), the bottom surface of the connecting block (14) being fixedly connected to a fixed platform (17), the top surface of the fixed plate (12) being fixedly connected to a first motor (18), the output end of the first motor (18) being fixedly connected to a threaded rod (19), the threaded rod (19) penetrating the connecting block (14), and the threaded rod (19) being threadedly connected to the connecting block (14).
4. A coding device for processing leisure food according to claim 3, characterized in that: The base (1) is provided with a coding mechanism, the coding mechanism comprising two fixing frames (20) fixedly connected to the right side surface of the fixing platform (17), a bolt (21) being threadedly connected between the two fixing frames (20), a coding terminal (22) being slidably connected to the inner wall of the fixing frame (20), an inkjet terminal (22) being fixedly connected to the top of the inkjet terminal (22), an ink storage box (24) being fixedly connected to the base (1), and an end of the inkjet terminal (23) away from the inkjet terminal (22) extending into the ink storage box (24).
5. A coding device for processing leisure food according to claim 4, characterized in that: The base (1) is provided with a transmission mechanism, the transmission mechanism comprising a driving component and a transmission component, the driving component comprising a second motor (25) fixedly connected to the front face of the support frame (2), the output end of the second motor (25) being fixedly connected to a driving rod (26), the rear end of the driving rod (26) extending to the inner wall of the support frame (2), the rear end of the driving rod (26) being rotatably connected to the inner wall of the support frame (2).
6. The coding device for processing leisure food according to claim 5, characterized in that: The transmission assembly comprises a third connecting rod (27) rotatably connected to the inner wall of the support frame (2), and a first transmission belt (28) is sleeved between the third connecting rod (27) and the driving rod (26).
7. The coding device for processing leisure food according to claim 6, characterized in that: The base (1) is provided with a detection mechanism, the detection mechanism comprising a detection component and a reflux component, the detection component comprising a detector (29) fixedly connected to the top of the support frame (2), the base (1) is fixedly connected to a plurality of hydraulic cylinders (30), the output ends of the plurality of hydraulic cylinders (30) are all fixedly connected to a first connection block (31), the first connection block (31) is hinged to the bottom end of a second connection block (32), the top end of the second connection block (32) is fixedly connected to a classification table (33), and a storage box (34) is provided on the top surface of the base (1).
8. The coding device for processing leisure food according to claim 7, characterized in that: The reflux assembly comprises a fourth connecting rod (35) rotatably connected to the inner wall of the support frame (2); the inner wall of the support frame (2) is rotatably connected to a fifth connecting rod (36); the front end of the fifth connecting rod (36) extends to the front surface of the support frame (2); the front end of the fifth connecting rod (36) is fixedly connected to a first gear (37); the front end of the third connecting rod (27) extends to the front surface of the support frame (2); the front end of the third connecting rod (27) is fixedly connected to a first pulley (38); the front of the support frame (2) is fixedly connected to a fixing rod (39); a second pulley (40) is rotatably connected to the fixing rod (39); the front end of the fixing rod (39) is rotatably connected to a second gear (41); a belt (42) is sleeved between the first pulley (38) and the second pulley (40); the second gear (41) is meshed with the first gear (37); and a second transmission belt (43) is sleeved between the fourth connecting rod (35) and the fifth connecting rod (36).
