Bottle body splitting equipment

Abstract

The utility model relates to the field of oral liquid production and processing, and discloses bottle body separation equipment which comprises a conveying device, and the conveying device comprises a main transmission belt device, a first separation transmission belt device, a second separation transmission belt device and a short transmission belt. And the separation assembly comprises stand columns, a moving frame and a driving assembly, an intercepting plate is further arranged between the two stand columns, and a linkage unit is further arranged between the driving assembly and the intercepting plate. The separating assembly and the moving frame are arranged to drive the short transmission belt to conduct arc-shaped reciprocating motion, separating in the bottle conveying process is achieved, the linkage unit is arranged, lifting of the intercepting plate can be controlled, seamless connection of intercepting and flow dividing is achieved, the manual intervention requirement can be lowered through the design, only one driving device is needed, cost is lower, and operation is more convenient. The gear mechanical transmission structure is more stable, and later maintenance is simple.

Description

Technical Field

[0001] This utility model relates to the field of oral liquid production and processing, and in particular to a bottle separation device. Background Technology

[0002] Oral liquids are widely used in clinical and home medicine catalogs due to their advantages such as small dosage, good taste, fast absorption, rapid effect, stable quality, easy portability and easy storage.

[0003] For example, the utility model application with application number CN212923412U discloses a conveyor belt diversion device, which includes a main conveyor belt and a secondary conveyor belt. The main conveyor belt and the secondary conveyor belt are in the same length direction and are connected end to end. The secondary conveyor belt includes a first conveyor belt and a second conveyor belt. The first transmission belt and the second conveyor belt are arranged in parallel. The main conveyor belt is a belt conveyor and the secondary conveyor belt is a roller conveyor. A reversing device is provided between the main conveyor belt and the secondary conveyor belt.

[0004] The existing device is used to divert and separate food materials. However, in the production and processing of oral liquids, the bottles are small. In order to prevent the bottles from falling and being damaged during diversion, the bottles need to be intercepted before diversion and then released to allow the bottles to move after diversion. To achieve this effect, an additional set of interception drive device and control system is required, which increases the manufacturing cost of the equipment and the subsequent maintenance costs.

[0005] Therefore, we propose a bottle separation device. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a bottle sorting device that solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A bottle sorting device includes a conveying device comprising a main drive belt assembly, a first sorting drive belt assembly, and a second sorting drive belt assembly, the first and second sorting drive belt assemblies being arranged side-by-side. A short drive belt is disposed at one end of the main drive belt assembly near the first and second sorting drive belt assemblies. A sorting assembly is disposed at one end of the main drive belt assembly and is used for adjusting the direction of the short drive belt and intercepting bottle movement. The sorting assembly includes columns, a moving frame, and a drive assembly. Two sets of columns are provided, and the drive assembly is disposed between the two sets of columns and the moving frame to drive the short drive belt forward. The system moves in an arc-shaped reciprocating motion. An intercepting plate is installed between the two sets of columns. A linkage unit is also installed between the drive assembly and the intercepting plate to control the lifting and lowering of the intercepting plate. The drive assembly includes a rectangular plate, a rack, and an electric telescopic rod. The electric telescopic rod drives the rack to move. A rotating rod is fixedly installed at one end of the moving frame. A first rotating shaft is fixedly passed through the end of the rotating rod away from the moving frame. A first gear is fixedly passed through the first rotating shaft. The rack and the first gear are movably meshed. The linkage unit includes a third rotating shaft, a third gear, and a lifting block. The third rotating shaft movably passes through the lifting block. The lifting block is fixedly connected to the intercepting plate. The lifting block drives the intercepting plate to lift and lower synchronously.

[0009] According to the bottle-separating device, a first support frame is fixedly installed at the bottom of the main drive belt device, and a second support frame is fixedly installed at the bottom of the first and second separation drive belt devices. Two sets of columns are fixedly installed on the first support frame and are parallel to each other. The movable frame is U-shaped and is fixedly installed on the outer wall of the short drive belt.

[0010] According to the bottle sorting device, a rectangular box and a top plate are fixedly installed between the two sets of columns. The top plate is located above the rectangular box and is parallel to the rectangular box. The rectangular box is fixedly connected to the rectangular plate, and a first mounting frame is fixedly installed on the top of the rectangular plate.

[0011] According to the bottle sorting device, the first rotating shaft is movably installed between the first mounting frame and the rectangular plate. A limit block is installed in the cavity of the first mounting frame. The rack moves through the limit block. The electric telescopic rod is fixedly installed on the top of the rectangular box through the mounting seat. A push block is fixedly installed on one side of the rack. The telescopic end of the electric telescopic rod is fixedly connected to the push block.

[0012] According to the bottle sorting device, the rectangular box is hollow, and a second rotating shaft is movably installed at one end of the top plate. The second rotating shaft movably passes through the top of the rectangular box and is movably installed at the bottom of the rectangular box cavity through a bearing. A second gear is fixedly passed through the second rotating shaft outside the rectangular box, and a third gear is fixedly passed through the second rotating shaft inside the rectangular box cavity.

[0013] According to the bottle sorting device, the top end of the third rotating shaft is movably mounted on the top end of the rectangular box cavity via a bearing. A partition is also fixedly installed between the two sets of columns. The bottom end of the third rotating shaft movably passes through the rectangular box and is movably mounted on the top end of the partition via a bearing. The third rotating shaft and the second rotating shaft are parallel to each other. A fourth gear is fixedly passed through the third rotating shaft in the rectangular box cavity. The fourth gear is movably meshed with the third gear. The fourth gear has fewer teeth than the third gear.

[0014] According to the bottle separating device, the interceptor plate and the lifting block are fixedly connected. The interceptor plate is located above one end of the main drive belt device. Both sides of the lifting block are provided with protrusions. A guide rod is fixedly installed between the partition plate and the rectangular box. The guide rod moves through the corresponding protrusion.

[0015] This utility model provides a bottle-separating device, which has the following beneficial effects:

[0016] (1) By setting a short transmission belt between the main transmission belt device and the first and second branch transmission belt devices, the first and second branch transmission belt devices are in parallel. The bottles conveyed on the main transmission belt device are moved to the first or second branch transmission belt device by the steering of the short transmission belt. A branch assembly is set to turn the short transmission belt. The rack is driven to move by an electric telescopic rod. The rack is engaged with the first gear. The first rotating shaft is fixedly passed through the first gear and the rotating rod. The rotating rod is connected to the moving frame, so that the moving frame drives the short transmission belt to move in an arc. When the short transmission belt moves, it is necessary to intercept the bottles in the main transmission belt device. By setting a linkage unit, the lifting and lowering of the interception plate can be controlled to achieve seamless connection between interception and diversion. This design can reduce the need for manual intervention. Only one drive device is needed, the cost is lower, the gear mechanical transmission structure is more stable, and the later maintenance is simple.

[0017] (2) By setting a first rotating shaft to be movably installed between the first mounting frame and the rectangular plate, the first rotating shaft is fixedly connected through the first gear and the rotating rod, and the rotating rod is fixedly connected to the moving frame. By setting a rack to be movably meshed with the first gear, the rack moves so that the first gear drives the first rotating shaft, the rotating rod and the moving frame to rotate as a whole. By installing a limit block in the cavity of the first mounting frame, the rack moves through the limit block, thereby limiting the rack, improving the stability of the device structure and preventing the rack from shaking during operation.

[0018] (3) By setting the third gear and the fourth gear to mesh, and the third rotating shaft to pass through the fourth gear, the rotation of the fourth gear drives the rotation of the third rotating shaft synchronously. By setting the fourth gear to have fewer teeth than the third gear, the rotation speed of the fourth gear is faster than that of the third gear, and the rotation speed of the third rotating shaft is more, ensuring that the lifting range of the lifting block meets the requirements of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a bottle-separating device according to the present invention;

[0020] Figure 2 This is a front view schematic diagram of a bottle-separating device according to the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the channeling component of a bottle channeling device according to the present invention;

[0022] Figure 4 This is a schematic diagram showing the connection relationship between the moving frame and the rotating rod of a bottle sorting device according to this utility model;

[0023] Figure 5 This is a schematic diagram showing the connection relationship between the rectangular box, rectangular plate, rack, second rotating shaft and electric telescopic rod of a bottle sorting device according to this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the linkage unit of a bottle-separating device according to the present invention.

[0025] Legend:

[0026] 10. First support frame; 11. Main drive belt device; 12. Short drive belt; 13. Second support frame; 14. First lane drive belt device; 15. Second lane drive belt device; 16. Lane assembly; 17. Column; 18. Moving frame; 19. Drive assembly; 20. Interception plate; 21. Rotating rod; 22. First rotating shaft; 23. First gear; 24. Rectangular plate; 25. Rectangular box; 26. First mounting frame; 27. Rack; 28. Electric telescopic rod; 29. ​​Push block; 30. Top plate; 31. Second rotating shaft; 32. Second gear; 33. Third gear; 34. Third rotating shaft; 35. Fourth gear; 36. Partition plate; 37. Lifting block; 38. Guide rod. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] Please see Figure 1-6As shown, this utility model is a bottle sorting device, including a conveying device. The conveying device includes a main drive belt device 11, a first sorting drive belt device 14, and a second sorting drive belt device 15. The first sorting drive belt device 14 and the second sorting drive belt device 15 are arranged in parallel. A short drive belt 12 is provided at one end of the main drive belt device 11 near the first sorting drive belt device 14 and the second sorting drive belt device 15. A sorting assembly 16 is provided at one end of the main drive belt device 11 for adjusting the direction of the short drive belt 12 and intercepting bottle movement. The sorting assembly 16 includes columns 17, a moving frame 18, and a drive assembly 19. There are two sets of columns 17. The drive assembly 19 is located between the two sets of columns 17 and the moving frame 18, driving the short drive belt 12 in an arc shape. The device reciprocates, and an interceptor plate 20 is provided between the two sets of columns 17. A linkage unit is also provided between the drive assembly 19 and the interceptor plate 20 to control the lifting and lowering of the interceptor plate 20. The drive assembly 19 includes a rectangular plate 24, a rack 27, and an electric telescopic rod 28. The electric telescopic rod 28 drives the rack 27 to move. A rotating rod 21 is fixedly installed at one end of the moving frame 18. A first rotating shaft 22 is fixedly passed through the end of the rotating rod 21 away from the moving frame 18. A first gear 23 is fixedly passed through the first rotating shaft 22. The rack 27 is movably meshed with the first gear 23. The linkage unit includes a third rotating shaft 34, a third gear 33, and a lifting block 37. The third rotating shaft 34 movably passes through the lifting block 37. The lifting block 37 is fixedly connected to the interceptor plate 20. The lifting block 37 drives the interceptor plate 20 to lift and lower synchronously.

[0029] It is worth noting that the main drive belt device 11, the short drive belt 12, the first branch drive belt device 14, and the second branch drive belt device 15 are all used for transmission within the bottle casing, which are existing technologies known to those skilled in the art and will not be described in detail here.

[0030] Specifically, by setting a short transmission belt 12 between the main transmission belt assembly 11 and the first and second branch transmission belt assemblies 14 and 15, with the first and second branch transmission belt assemblies 14 and 15 arranged in parallel, the bottles conveyed on the main transmission belt assembly 11 are moved to the first or second branch transmission belt assembly 14 or 15 by the steering of the short transmission belt 12. A branch assembly 16 is provided to steering the short transmission belt 12. The rack 27 is driven to move by an electric telescopic rod 28, and the rack 27 interacts with the first gear 2. 3. The first rotating shaft 22 is fixedly connected to the first gear 23 and the rotating rod 21. The rotating rod 21 is connected to the moving frame 18, so that the moving frame 18 drives the short transmission belt 12 to move in an arc. When the short transmission belt 12 moves, it needs to intercept the bottle in the main transmission belt device 11. By setting a linkage unit, the lifting and lowering of the interception plate 20 can be controlled to achieve seamless connection between interception and diversion. This design can reduce the need for manual intervention, only requires one drive device, has lower cost, and the gear mechanical transmission structure is more stable and simple to maintain later.

[0031] It should be noted that: a PLC control cabinet and a power supply are installed on one side of the device. The power supply provides power to devices 28, 11, 12, 14 and 15. The PLC control cabinet controls the working status of devices 28, 11, 12, 14 and 15.

[0032] Among them, such as Figure 1-2 As shown, a first support frame 10 is fixedly installed at the bottom of the main drive belt device 11, a second support frame 13 is fixedly installed at the bottom of the first branch drive belt device 14 and the second branch drive belt device 15, two sets of columns 17 are fixedly installed on the first support frame 10, the two sets of columns 17 are parallel to each other, the movable frame 18 is U-shaped, and the movable frame 18 is fixedly installed on the outer wall of the short drive belt 12.

[0033] Specifically, the main drive belt device 11 is placed on the first support frame 10, and the first and second lane drive belt devices 14 and 15 are placed on the second support frame 13. Two sets of columns 17 are installed on the first support frame 10. The end of the short drive belt 12 closest to the main drive belt device 11 is movably connected to the first support frame 10, which serves to limit the movement of the short drive belt 12.

[0034] A rectangular box 25 and a top plate 30 are fixedly installed between the two sets of columns 17. The top plate 30 is located above the rectangular box 25 and is parallel to the rectangular box 25. The rectangular box 25 is fixedly connected to the rectangular plate 24, and a first mounting frame 26 is fixedly installed on the top of the rectangular plate 24.

[0035] Specifically, a rectangular box 25 and a top plate 30 are fixed between two sets of columns 17. The rectangular box 25 is fixedly connected to the rectangular plate 24, and the top of the rectangular plate 24 is fixedly installed with the first mounting frame 26.

[0036] Among them, such as Figure 3-4 As shown, the first rotating shaft 22 is movably installed between the first mounting frame 26 and the rectangular plate 24. A limit block is installed inside the cavity of the first mounting frame 26. The rack 27 movably passes through the limit block. The electric telescopic rod 28 is fixedly installed on the top of the rectangular box 25 through the mounting seat. A push block 29 is fixedly installed on one side of the rack 27. The telescopic end of the electric telescopic rod 28 is fixedly connected to the push block 29.

[0037] Specifically, a first rotating shaft 22 is movably installed between the first mounting frame 26 and the rectangular plate 24. The first rotating shaft 22 is fixedly connected through the first gear 23 and the rotating rod 21. The rotating rod 21 is fixedly connected to the movable frame 18. A rack 27 is movably meshed with the first gear 23. The movement of the rack 27 causes the first gear 23 to drive the first rotating shaft 22, the rotating rod 21, and the movable frame 18 to rotate as a whole. A limit block is installed in the cavity of the first mounting frame 26. The rack 27 moves through the limit block, thereby limiting the rack 27, improving the stability of the device structure, and preventing the rack 27 from shaking during operation.

[0038] The rectangular box 25 is hollow. A second rotating shaft 31 is movably installed at one end of the top plate 30. The second rotating shaft 31 movably passes through the top of the rectangular box 25 and is movably installed at the bottom of the cavity of the rectangular box 25 through a bearing. A second gear 32 is fixedly passed through the second rotating shaft 31 outside the rectangular box 25, and a third gear 33 is fixedly passed through the second rotating shaft 31 inside the cavity of the rectangular box 25.

[0039] Specifically, by setting the rectangular box 25 to be hollow, the rack 27 is movably meshed with the second gear 32. The rotation of the second gear 32 synchronously drives the second rotating shaft 31 to rotate. The second rotating shaft 31 is fixedly inserted through the second gear 32 and the third gear 33, thereby driving the third gear 33 to rotate. The third gear 33 is inside the cavity of the rectangular box 25.

[0040] Among them, such as Figure 5-6 As shown, the top end of the third rotating shaft 34 is movably mounted on the top end of the rectangular box 25 cavity via a bearing. A partition 36 is also fixedly installed between the two sets of columns 17. The bottom end of the third rotating shaft 34 movably passes through the rectangular box 25 and is movably mounted on the top end of the partition 36 via a bearing. The third rotating shaft 34 and the second rotating shaft 31 are parallel to each other. The third rotating shaft 34 is fixedly mounted through the fourth gear 35 in the rectangular box 25 cavity. The fourth gear 35 is movably meshed with the third gear 33. The fourth gear 35 has fewer teeth than the third gear 33.

[0041] It should be noted that the outer wall of the third rotating shaft 34 has a threaded groove on the outside of the rectangular box 25, and the third rotating shaft 34 and the lifting block 37 are connected by threads.

[0042] Specifically, by setting the third gear 33 and the fourth gear 35 to be in active mesh, and the third rotating shaft 34 to be fixedly inserted through the fourth gear 35, the rotation of the fourth gear 35 synchronously drives the rotation of the third rotating shaft 34. By setting the fourth gear 35 to have fewer teeth than the third gear 33, the rotation speed of the fourth gear 35 to be faster than that of the third gear 33, and the rotation speed of the third rotating shaft 34 to be more, it is ensured that the lifting range of the lifting block 37 meets the requirements of the device.

[0043] The interceptor plate 20 and the lifting block 37 are fixedly connected. The interceptor plate 20 is located above one end of the main drive belt device 11. Both sides of the lifting block 37 are provided with protrusions. A guide rod 38 is fixedly installed between the partition plate 36 and the rectangular box 25. The guide rod 38 moves through the corresponding protrusion.

[0044] Specifically, by setting the interceptor plate 20 above one end of the main drive belt device 11, and providing protrusions on both sides of the lifting block 37, a guide rod 38 is fixedly installed between the partition plate 36 and the rectangular box 25. The guide rod 38 moves through the corresponding protrusion, and the interceptor plate 20 is fixedly connected to the lifting block 37. Thus, the lifting block 37 completes the lifting and lowering of the interceptor plate 20 during the lifting and lowering process, and the interceptor plate 20 descends to intercept the bottle below.

[0045] The specific working principle of the bottle sorting device of this utility model is as follows: A short transmission belt 12 is set between the main transmission belt device 11 and the first sorting transmission belt device 14 and the second sorting transmission belt device 15. The first sorting transmission belt device 14 and the second sorting transmission belt device 15 are in a parallel state. The bottles conveyed on the main transmission belt device 11 are moved to the first sorting transmission belt device 14 or the second sorting transmission belt device 15 by the steering of the short transmission belt 12. A sorting component 16 is set to turn the short transmission belt 12. The rack 27 is driven to move by the electric telescopic rod 28. The rack 27 is movably engaged with the first gear 23. The first rotating shaft 22 is fixedly inserted through the first gear 23 and the rotating rod 21. The rotating rod 21 is connected to the moving frame 18, so that the moving frame 18 drives the short transmission belt 12 to move in an arc reciprocating motion. When the short transmission belt 12 moves, it needs to intercept the bottles in the main transmission belt device 11. The third gear 33 and the fourth gear 35 are movably engaged by the short transmission belt 12. The third rotating shaft 34 is fixedly connected to the fourth gear 35, so that the rotation of the fourth gear 35 synchronously drives the rotation of the third rotating shaft 34. By setting the number of teeth of the fourth gear 35 to be less than that of the third gear 33, the rotation speed of the fourth gear 35 to be faster than that of the third gear 33, and the rotation speed of the third rotating shaft 34 to be more, it is ensured that the lifting range of the lifting block 37 meets the requirements of the device. By setting the intercepting plate 20 above one end of the main drive belt device 11, and the lifting block 37 is provided with protrusions on both sides, a guide rod 38 is fixedly installed between the partition plate 36 and the rectangular box 25, and the guide rod 38 moves through the corresponding protrusion. The intercepting plate 20 and the lifting block 37 are fixedly connected, so that the lifting block 37 completes the lifting and lowering of the intercepting plate 20 during the lifting process. The intercepting plate 20 descends to intercept the bottle below, realizing a seamless connection between interception and diversion. This design can reduce the need for manual intervention, only requires one drive device, has lower cost, and the gear mechanical transmission structure is more stable and easy to maintain later.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A bottle-separating device, characterized in that, include: The conveying device includes a main drive belt device (11), a first side drive belt device (14), and a second side drive belt device (15). The first side drive belt device (14) and the second side drive belt device (15) are arranged in parallel. A short drive belt (12) is provided at one end of the main drive belt device (11) near the first side drive belt device (14) and the second side drive belt device (15). The dividing assembly (16) is located at one end of the main drive belt device (11) and is used to adjust the direction of the short drive belt (12) and intercept the movement of the bottle. The dividing assembly (16) includes a column (17), a moving frame (18) and a drive assembly (19). There are two sets of columns (17). The drive assembly (19) is located between the two sets of columns (17) and the moving frame (18) to drive the short drive belt (12) to move in an arc. An intercepting plate (20) is also provided between the two sets of columns (17). A linkage unit is also provided between the drive assembly (19) and the intercepting plate (20) to control the lifting and lowering of the intercepting plate (20). The drive assembly (19) includes a rectangular plate (24), a rack (27) and an electric telescopic rod (28). The electric telescopic rod (28) drives the rack (27) to move. A rotating rod (21) is fixedly installed at one end of the moving frame (18). A first rotating shaft (22) is fixedly passed through the end of the rotating rod (21) away from the moving frame (18). A first gear (23) is fixedly passed through the first rotating shaft (22). The rack (27) and the first gear (23) are movably meshed. The linkage unit includes a third rotating shaft (34), a third gear (33) and a lifting block (37). The third rotating shaft (34) moves through the lifting block (37). The lifting block (37) is fixedly connected to the interceptor plate (20). The lifting block (37) drives the interceptor plate (20) to rise and fall synchronously.

2. The bottle sorting device according to claim 1, characterized in that: The main drive belt device (11) is fixedly installed with a first support frame (10) at its bottom end. The first and second branch drive belt devices (14 and 15) are fixedly installed with a second support frame (13). Two sets of columns (17) are fixedly installed on the first support frame (10). The two sets of columns (17) are parallel to each other. The movable frame (18) is U-shaped and is fixedly installed on the outer wall of the short drive belt (12).

3. The bottle sorting device according to claim 1, characterized in that: A rectangular box (25) and a top plate (30) are fixedly installed between the two sets of columns (17). The top plate (30) is located above the rectangular box (25). The top plate (30) and the rectangular box (25) are parallel to each other. The rectangular box (25) is fixedly connected to the rectangular plate (24). A first mounting frame (26) is fixedly installed on the top of the rectangular plate (24).

4. The bottle sorting device according to claim 1, characterized in that: The first rotating shaft (22) is movably installed between the first mounting frame (26) and the rectangular plate (24). A limit block is installed in the cavity of the first mounting frame (26). The rack (27) moves through the limit block. The electric telescopic rod (28) is fixedly installed on the top of the rectangular box (25) through the mounting seat. A push block (29) is fixedly installed on one side of the rack (27). The telescopic end of the electric telescopic rod (28) is fixedly connected to the push block (29).

5. The bottle sorting device according to claim 3, characterized in that: The rectangular box (25) is hollow. A second rotating shaft (31) is movably installed at one end of the top plate (30). The second rotating shaft (31) movably passes through the top of the rectangular box (25) and is movably installed at the bottom of the cavity of the rectangular box (25) through a bearing. A second gear (32) is fixedly passed through the outside of the rectangular box (25) and a third gear (33) is fixedly passed through the inside of the rectangular box (25).

6. The bottle sorting device according to claim 1, characterized in that: The top end of the third rotating shaft (34) is movably mounted on the top end of the rectangular box (25) cavity via a bearing. A partition (36) is also fixedly installed between the two sets of columns (17). The bottom end of the third rotating shaft (34) movably passes through the rectangular box (25) and is movably mounted on the top end of the partition (36) via a bearing. The third rotating shaft (34) and the second rotating shaft (31) are parallel to each other. The third rotating shaft (34) is fixedly mounted on the fourth gear (35) inside the rectangular box (25) cavity. The fourth gear (35) meshes with the third gear (33). The fourth gear (35) has fewer teeth than the third gear (33).

7. The bottle sorting device according to claim 1, characterized in that: The interceptor plate (20) and the lifting block (37) are fixedly connected. The interceptor plate (20) is located above one end of the main drive belt device (11). Both sides of the lifting block (37) are provided with protrusions. A guide rod (38) is fixedly installed between the partition plate (36) and the rectangular box (25). The guide rod (38) moves through the corresponding protrusion.

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