Chinese cabbage maintenance bundling machine
By designing a cabbage care and bundling machine, a mechanized method is used to gather and bundle Chinese cabbages, solving the problems of high cost and low efficiency of manual bundling and realizing an efficient and low-cost automated bundling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
- Filing Date
- 2024-10-28
- Publication Date
- 2026-05-22
AI Technical Summary
The current technology lacks machines capable of mechanically bundling Chinese cabbage, resulting in high costs, low efficiency, and a high risk of lower back strain due to manual bundling, as well as the problem of cabbage leaves being lost.
A cabbage care and bundling machine was designed, including a support frame, a moving device, a gathering device, a bundling device, and a cutting device. It gathers and bundles Chinese cabbages mechanically, using plastic film and tape for bundling, and achieves automated operation using an electric telescopic rod and a gear transmission system.
This technology enables mechanized bundling of Chinese cabbages, reducing costs, increasing bundling efficiency, preventing leaf loss, and reducing manual labor intensity.
Smart Images
Figure CN119256848B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of rental equipment technology, and specifically relates to a cabbage care and bundling machine. Background Technology
[0002] Chinese cabbage is one of the most popular vegetable varieties on the market. With the rapid development of the global economy and the increasing demand for healthy diets, the overall demand for Chinese cabbage is on the rise, further driving the expansion of the Chinese cabbage planting industry year by year, and making the varieties more diversified. Open-field overwintering Chinese cabbage is one of the most important winter vegetable crops in southern my country.
[0003] Chinese cabbage originated in North China and is widely cultivated throughout the country. It is relatively cold-hardy and prefers cool climates, making it suitable for growth during cool seasons. Cultivation during hot seasons increases the risk of pests and diseases, resulting in poor quality and low yields; therefore, it is not suitable for summer cultivation. While Chinese cabbage is slightly cold-hardy, it is very susceptible to frost damage in winter. Once damaged by frost, its interior rots completely, severely affecting its quality. Therefore, in northern regions, people typically plant Chinese cabbage around the time of the Autumnal Equinox and then tie it up after the first frost.
[0004] Tying cabbages in winter can raise the temperature of the cabbage heart, preventing it from freezing in temperatures as low as -20°C. This effectively prevents and reduces frost damage, keeping the cabbage in a suitable growing environment. It also strengthens the cabbage's core structure, preventing pests from entering and increasing the yield. Tying increases ventilation and air permeability, preventing large clumps of cabbages from rotting together. It allows the roots to receive sunlight, raising the soil temperature and further promoting the cabbage's later growth. Tying also reduces the cabbage's volume, improving its appearance and making it easier to harvest later, while also allowing for the storage of more cabbages in warehouses.
[0005] Currently, there is a lack of machines capable of mechanically bundling Chinese cabbage, and the cabbage is currently bundled manually. However, manual bundling is costly and inefficient, and the long hours of bending over can easily lead to lumbar muscle strain. If mechanical bundling is used, the outermost leaves are likely to be lost, resulting in economic losses. Summary of the Invention
[0006] The purpose of this invention is to address the aforementioned problems in the prior art by providing a cabbage care and bundling machine.
[0007] The objective of this invention can be achieved through the following technical solution: A cabbage care and bundling machine, characterized in that it includes a support frame, a moving device, an adhesive storage device for storing tape, a material storage device for storing plastic film, and a bundling device at the bottom of the support frame. The moving device is used to drive the support frame to move. A gathering device for gathering cabbage leaves is provided on the support frame. The gathering device includes a first driving device, a transmission device, and a clamping device. The transmission device is used to connect the first driving device and the clamping device. The first driving device drives the clamping device to work through the transmission device. The bundling device is connected to a second driving device. The second driving device is used to drive the bundling device to move the plastic film from the material storage device to the adhesive storage device. A cutting device is provided on one side of the adhesive storage device. The cutting device is used to cut the plastic film and adhesive tape.
[0008] The working principle of this invention is as follows: In the initial state, the plastic film and tape are connected. The moving device drives the support frame to move, and the Chinese cabbage enters under the support frame. The plastic film is squeezed, causing it to wrap around the perimeter of the Chinese cabbage. At this time, the Chinese cabbage is not yet wrapped. Then, the first driving device works, driving the clamping device through the transmission device to gather the scattered cabbage leaves. The moving device continues to move forward, causing the gathered Chinese cabbage to squeeze and pull the plastic film into the binding area. The second driving device works, driving the binding device to bind the Chinese cabbage. After binding, the cutting device cuts the tape and plastic film simultaneously, completing the binding of one Chinese cabbage. The binding device returns to the initial position, waiting for the next Chinese cabbage to enter.
[0009] In the aforementioned cabbage care and bundling machine, the clamping device includes two push rod groups. The first driving device drives the two push rod groups to move closer or further apart through the transmission device. When the two push rod groups move closer together, the transmission device drives the push rod groups to rise. The transmission device includes a limiting rod, a driving rod, a driven rod, and a first connecting rod. One end of the limiting rod is rotatably connected to the bottom of the support frame, and the other end of the limiting rod is rotatably connected to the middle of the driving rod. One end of both the driving rod and the driven rod is rotatably connected to the first driving device, and the other end of both the driving rod and the driven rod is rotatably connected to the first connecting rod. The first connecting rod is used to connect the push rod groups.
[0010] In the aforementioned cabbage care and bundling machine, the first driving device includes a lifting device and a connecting support rod. The support frame is provided with a first through hole for the connecting support rod to pass through. The lifting device is used to drive the connecting support rod to rise or fall. The connecting support rod includes a connecting top block, a connecting vertical rod, and a U-shaped rod. The connecting top block is used to connect the lifting device and the connecting vertical rod. The connecting vertical rod is used to connect the U-shaped rod. The U-shaped rod is used to connect the transmission device. The lifting device is an electric telescopic rod. The electric telescopic rod is fixedly installed on the support frame by a threaded component. The telescopic end of the electric telescopic rod is connected to the connecting top block by a threaded component.
[0011] In the aforementioned cabbage care and bundling machine, the push rod assembly includes two first connecting parts and an arc-shaped part. The two first connecting parts are disposed on both sides of the arc-shaped part. The first connecting parts are used to connect the first connecting rod, and the arc-shaped part is used to abut against the cabbage. The surface of the arc-shaped part is provided with a flexible layer.
[0012] In the aforementioned cabbage care and bundling machine, the bundling device includes a support base, two elastic devices, and rollers connected to the elastic devices. The elastic devices are disposed within the support base, and the support base has clearance holes for the rollers to pass through. The elastic devices include a sliding block, a guide rod, and a spring. The sliding block has a sliding groove for the guide rod to pass through, the spring is sleeved on the guide rod, and the rollers are disposed on the sliding block.
[0013] In the aforementioned cabbage care and tying machine, the second driving device includes a connecting frame, a rack, a gear, a second connecting rod, and an electric telescopic rod. The connecting frame is fixedly installed on the support frame, and the support frame has a second through hole for the second connecting rod to pass through. The connecting frame is rotatably connected to the second connecting rod. The gear is located on the second connecting rod. The electric telescopic rod is used to drive the rack to move, and the rack meshes with the gear. The end of the second connecting rod away from the connecting frame is connected to the tying device. The second connecting rod includes a driving part, a clearance part, and a second connecting part. The clearance part is used to connect the driving part and the second connecting part. The driving part is used to connect the connecting frame, and the second connecting part is used to connect the tying device. The clearance part is used to avoid the cabbage during rotation.
[0014] In the aforementioned cabbage care and bundling machine, the material storage device includes a first housing and a first rotating drum. The first rotating drum is rotatably connected inside the first housing and is used for installing plastic film. The first housing is provided with a third through hole for the plastic film to pass through.
[0015] In the aforementioned cabbage care and bundling machine, the adhesive storage device includes a second housing and a second rotating drum. The second rotating drum is rotatably connected inside the second housing and is used for installing adhesive tape. The second housing is provided with a fourth through hole for the adhesive tape to pass through, and the side of the second housing near the bundling device is arc-shaped.
[0016] In the aforementioned cabbage care and bundling machine, the cutting device includes a telescopic device and a heating wire. Secondly, a fifth through hole may be provided for the telescopic device to pass through, and the telescopic device is used to drive the heating wire to move.
[0017] In the aforementioned cabbage care and bundling machine, the moving device is a tracked vehicle.
[0018] Compared with existing technologies, the present invention has the advantages of being able to gather the leaves of Chinese cabbage and tie them mechanically, thereby replacing manual labor and reducing costs. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the present invention.
[0020] Figure 2 This is a schematic diagram of the initial state of the gathering device of the present invention.
[0021] Figure 3 This is a schematic diagram of the structure of the gathering device of the present invention when it is gathered.
[0022] Figure 4 This is a cross-sectional structural diagram of the support base of the present invention.
[0023] Figure 5 This is a schematic diagram of the initial state of the binding device of the present invention.
[0024] Figure 6 This is a schematic diagram of the structure of the binding device of the present invention during operation.
[0025] In the diagram, 1. Support frame; 2. Moving device; 3. Pasting and storage device; 4. Material storage device; 5. Bundling device; 6. Cutting device; 7. Support base; 8. Elastic device; 9. Roller; 10. Clearance hole; 11. Sliding block; 12. Guide rod; 13. Spring; 14. Sliding groove; 15. Connecting frame; 16. Rack; 17. Second connecting rod; 18. Electric telescopic rod; 19. Second through hole; 20. Drive unit; 21. Clearance part; 22. Second connecting part; 23. First housing; 24. First rotating cylinder; 25. Third through hole; 26. Second housing 27. Body; 28. Second rotating drum; 29. Fourth through hole; 30. Telescopic device; 31. Heating wire; 32. Second driving device; 33. Gear; 34. Fifth through hole; 35. Retracting device; 36. First driving device; 37. Transmission device; 38. Clamping device; 39. Push rod assembly; 40. Limiting rod; 41. Driving rod; 42. Driven rod; 43. Lifting device; 44. Connecting support rod; 45. First through hole; 46. First connecting top block; 47. Connecting vertical rod; 48. U-shaped rod; 49. Connecting part; 50. Arc part. Detailed Implementation
[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0027] like Figures 1-6 As shown, this cabbage care and bundling machine includes a support frame 1. At the bottom of the support frame 1 are a moving device 2, a tape storage device 3, a material storage device 4 for storing plastic film, and a bundling device 5. The moving device 2 drives the support frame 1 to move. A gathering device 34 for gathering cabbage leaves is provided on the support frame 1. The gathering device 34 includes a first driving device 35, a transmission device 36, and a clamping device 373. The transmission device 36 connects the first driving device 35 and the clamping device 373. The first driving device 35 drives the clamping device 373 through the transmission device 36. The bundling device 5 is connected to a second driving device 31, which drives the bundling device 5 to move the plastic film from the material storage device 4 to the tape storage device 3. A cutting device 6 is provided on one side of the tape storage device 3, which cuts the plastic film and tape.
[0028] To elaborate further, the clamping device 373 includes two push rod assemblies 38. The first driving device 35 drives the two push rod assemblies 38 to move closer or further apart through the transmission device 36. When the two push rod assemblies 38 move closer together, the transmission device 36 drives the push rod assemblies 38 to rise. The transmission device 36 includes a limiting rod 39, a driving rod 40, a driven rod 41, and a first connecting rod 42. One end of the limiting rod 39 is rotatably connected to the bottom of the support frame 1, and the other end of the limiting rod 39 is rotatably connected to the middle of the driving rod 40. One end of the driving rod 40 and the driven rod 41 are both rotatably connected to the first driving device 35, and the other end of the driving rod 40 and the driven rod 41 are both rotatably connected to the first connecting rod 42. The first connecting rod 42 is used to connect the push rod assemblies 38.
[0029] Initially, the distance between the two push rod groups 38 is at its greatest, and the push rod groups 38 are in their lowest position. When the moving device 2 moves the support frame 1 to the designated position, the control device is activated. The transmission device 36 brings the two push rod groups 38 closer to each other. At the same time, under the action of the transmission device 36, the two push rod groups 38 move upward, so that the push rod groups 38 can gather the cabbage leaves from bottom to top and from outside to inside, which is convenient for the subsequent binding device to bind them. The two ends of the limiting rod 39 are rotatably connected, and the length of the limiting rod 39 is fixed. Therefore, the limiting rod 39 can be used to control the rotation angle of the drive rod 40. The rotation of the drive rod 40 will drive the driven rod 41 to rotate. Since the two are in different positions and their lengths are unchanged, the driven rod 41 will drive the first connecting rod 42 to rotate, thereby achieving the function of controlling the push rod group 38.
[0030] In further detail, the first driving device 35 includes a lifting device 43 and a connecting support rod 44. The support frame 1 has a first through hole 45 for the connecting support rod 44 to pass through. The lifting device 43 drives the connecting support rod 44 to rise or fall. The connecting support rod 44 includes a connecting top block, a connecting vertical rod 47, and a U-shaped rod 48. The connecting top block connects the lifting device 43 and the connecting vertical rod 47. The connecting vertical rod 47 connects the U-shaped rod 48, and the U-shaped rod 48 connects the transmission device 36. The lifting device 43 uses an electric telescopic rod 18, which is fixedly installed on the support frame 1 by threaded fittings. The telescopic end of the electric telescopic rod 18... The connecting top block is connected by a threaded component. The through hole serves as a horizontal limit for the connecting support rod 44, preventing it from moving horizontally and impacting the clamping device 373. Since there are two sets of push rods 38, they are respectively located at both ends of the U-shaped rod 48, ensuring that the positions of the two push rods 38 are consistent and ensuring the subsequent folding of the cabbage leaves. The electric telescopic rod 18 adopts existing technology to control the height of the clamping device 373, which has the advantages of stability and speed. At the same time, the extension stroke of the telescopic rod can be set to prevent misalignment damage caused by excessive displacement of the clamping device 373.
[0031] To elaborate further, the push rod assembly 38 includes two first connecting parts 49 and an arc-shaped part 50. The two first connecting parts 49 are located on both sides of the arc-shaped part 50. The first connecting parts 49 are used to connect the first connecting rod 42. The arc-shaped part 50 is used to abut against the cabbage. A flexible layer is provided on the surface of the arc-shaped part 50. The first connecting parts 49 and the first connecting rod 42 are connected by friction. Under the action of external force, the push rod assembly 38 can adapt to the folding of cabbage leaves of different sizes and prevent the arc-shaped part 50 from damaging the cabbage leaves. The flexible layer can be made of materials such as rubber or silicone, or foam can be used for wrapping instead.
[0032] To elaborate further, the binding device 5 includes a support base 7, two elastic devices 8, and rollers 9 connected to the elastic devices 8. The elastic devices 8 are disposed inside the support base 7, and the support base 7 is provided with clearance holes 10 for the rollers 9 to pass through. The elastic device 8 includes a sliding block 11, a guide rod 12, and a spring 13. The sliding block 11 is provided with a sliding groove 14 for the guide rod 12 to pass through, the spring 13 is sleeved on the guide rod 12, and the rollers 9 are disposed on the sliding block 11.
[0033] Each roller 9 corresponds to an elastic device 8, allowing the elastic deformation of the two rollers 9 to be different. The purpose of this setting is to compress the tape and plastic film when the binding device 5 moves to the adhesive storage device 3, so that they can stick together firmly. At the same time, the cutting device 6 is located between the two rollers 9, so that the tape and plastic film are still stuck together after the cutting device 6 cuts, that is, it returns to the initial state, which is convenient for the next cabbage bundling. In the initial state, the guide rod 12 is located in the sliding groove 14, and the sliding groove 14 plays a limiting role to prevent the roller 9 from moving too much inward, causing the roller 9 to disengage from the relief hole 10. In normal deformation, the sliding groove 14 does not affect the sliding of the guide rod 12. When the roller 9 is squeezed by external force, it will contract inward and squeeze the spring 13.
[0034] In further detail, the second drive device 31 includes a connecting frame 15, a rack 16, a gear 32, a second connecting rod 17, and an electric telescopic rod 18. The connecting frame 15 is fixedly mounted on the support frame 1. The support frame 1 is provided with a second through hole 19 for the second connecting rod 17 to pass through. The connecting frame 15 and the second connecting rod 17 are rotatably connected. The gear 32 is disposed on the second connecting rod 17. The electric telescopic rod 18 is used to drive the rack 16 to move. The rack 16 meshes with the gear 32. The end of the second connecting rod 17 away from the connecting frame 15 is connected to the binding device 5. The second connecting rod 17 includes a drive part 20, a clearance part 21, and a second connecting part 4922. The clearance part 21 is used to connect the drive part 20 and the second connecting part 4922. The drive part 20 is used to connect the connecting frame 15. The second connecting part 4922 is used to connect the binding device 5. The clearance part 21 is used to avoid the cabbage when rotating.
[0035] This setting is used to enable the binding device 5 to rotate and move from the material storage device 4 to the binding device 5; this setting is also used to avoid the cabbage, so that the binding device 5 will not touch the cabbage being bound during the displacement process, thus preventing damage to the cabbage.
[0036] To elaborate further, the material storage device 4 includes a first housing 23 and a first rotating cylinder 24. The first rotating cylinder 24 is rotatably connected inside the first housing 23 and is used for mounting plastic film. The first housing 23 is provided with a third through hole 25 for the plastic film to pass through.
[0037] This application uses the method of pulling the plastic film to move when the cabbage enters the designated position, which at the same time drives the first rotating drum 24 to rotate. The first rotating drum 24 is set in order to reduce friction.
[0038] To elaborate further, the adhesive storage device 3 includes a second housing 26 and a second rotating cylinder 27. The second rotating cylinder 27 is rotatably connected inside the second housing 26 and is used for installing adhesive tape. The second housing 26 is provided with a fourth through hole 28 for the adhesive tape to pass through. The side of the second housing 26 near the binding device 5 is rounded.
[0039] This application utilizes the binding device 5 to pull the tape as it moves to the designated position, simultaneously causing the second rotating drum 27 to rotate. The second rotating drum 27 is designed to reduce friction and is also intended to fit the rollers of the binding device 5. Its arc-shaped design ensures that the binding device 5 makes full contact with the arc surface during movement, squeezing the rollers and allowing the tape and plastic film to fully adhere.
[0040] To elaborate further, the cutting device 6 includes a telescopic device 29 and a heating wire 30. Secondly, it may be provided with a fifth through hole 33 for the telescopic device 29 to pass through. The telescopic device 29 is used to drive the heating wire 30 to move.
[0041] The tape and plastic at the cut point are melted and solidified again by using an electric heating wire 30, making them more secure and preventing them from separating and causing the cabbage to fail to be bundled. The telescopic device 29 adopts existing methods, such as an electric telescopic rod 18 or an electric track with a slider.
[0042] To elaborate further, the mobile device 2 uses tracks.
[0043] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.
[0044] Although this document uses a large number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would be contrary to the spirit of the invention.
Claims
1. A cabbage care and bundling machine, characterized in that, The system includes a support frame (1), at the bottom of which are a moving device (2), a tape storage device (3), a material storage device (4) for storing plastic film, and a binding device (5). The moving device (2) is used to move the support frame (1). The support frame (1) is equipped with a gathering device (34) for gathering vegetable leaves. The gathering device (34) includes a first driving device (35), a transmission device (36), and a clamping device (37). The transmission device (36) is used to connect the... The first driving device (35) and the clamping device (37) are connected. The first driving device (35) drives the clamping device (37) to work through the transmission device (36). The binding device (5) is connected to the second driving device (31). The second driving device (31) is used to drive the binding device (5) to move the plastic film from the material storage device (4) to the adhesive storage device (3). A cutting device (6) is provided on one side of the adhesive storage device (3). The cutting device (6) is used to cut the plastic film and tape. The clamping device (37) includes two push rod groups (38). The first driving device (35) drives the two push rod groups (38) to move closer or further apart through the transmission device (36). When the two push rod groups (38) move closer together, the transmission device (36) drives the push rod groups (38) to rise. The transmission device (36) includes a limiting rod (39), a driving rod (40), a driven rod (41), and a first connecting rod (42). One end of the limiting rod (39) is rotatably connected to the bottom of the support frame (1), and the other end of the limiting rod (39) is rotatably connected to the middle of the driving rod (40). One end of the driving rod (40) and the driven rod (41) are both rotatably connected to the first driving device (35), and the other end of the driving rod (40) and the driven rod (41) are both rotatably connected to the first connecting rod (42). The first connecting rod (42) is used to connect the push rod groups (38). The binding device (5) includes a support base (7), two elastic devices (8) and rollers (9) connected to the elastic devices (8). The elastic devices (8) are disposed inside the support base (7). The support base (7) is provided with clearance holes (10) for the rollers (9) to pass through. The elastic device (8) includes a sliding block (11), a guide rod (12) and a spring (13). The sliding block (11) is provided with a sliding groove (14) for the guide rod (12) to pass through. The spring (13) is sleeved on the guide rod (12). The rollers (9) are disposed on the sliding block (11). The cutting device (6) includes a telescopic device (29) and a heating wire (30). The second housing (26) is provided with a fifth through hole (33) for the telescopic device (29) to pass through. The telescopic device (29) is used to drive the heating wire (30) to move. The mobile device (2) uses tracks.
2. The cabbage care and bundling machine according to claim 1, characterized in that, The first driving device (35) includes a lifting device (43) and a connecting support rod (44). The support frame (1) is provided with a first through hole (45) for the connecting support rod (44) to pass through. The lifting device (43) is used to drive the connecting support rod (44) to rise or fall. The connecting support rod (44) includes a connecting top block (46), a connecting vertical rod (47), and a U-shaped rod (48). The connecting top block (46) is used to connect the lifting device (43) and the connecting vertical rod (47). The connecting vertical rod (47) is used to connect the U-shaped rod (48). The U-shaped rod (48) is used to connect the transmission device (36). The lifting device (43) adopts an electric telescopic rod (18). The electric telescopic rod (18) is fixedly installed on the support frame (1) by a threaded part. The telescopic end of the electric telescopic rod (18) is connected to the connecting top block (46) by a threaded part.
3. The cabbage care and bundling machine according to claim 2, characterized in that, The push rod assembly (38) includes two first connecting parts (49) and an arc part (50). The two first connecting parts (49) are disposed on both sides of the arc part (50). The first connecting parts (49) are used to connect the first connecting rod (42). The arc part (50) is used to abut against the cabbage. The surface of the arc part (50) is provided with a flexible layer.
4. The cabbage care and bundling machine according to claim 1, characterized in that, The second driving device (31) includes a connecting frame (15), a rack (16), a gear (32), a second connecting rod (17), and an electric telescopic rod (18). The connecting frame (15) is fixedly mounted on the support frame (1). The support frame (1) has a second through hole (19) for the second connecting rod (17) to pass through. The connecting frame (15) is rotatably connected to the second connecting rod (17). The gear (32) is located on the second connecting rod (17). The electric telescopic rod (18) is used to drive the rack (16) to move. The rack (16) meshes with the gear (32), and the end of the second connecting rod (17) away from the connecting frame (15) is connected to the binding device (5). The second connecting rod (17) includes a driving part (20), a clearance part (21), and a second connecting part (22). The clearance part (21) is used to connect the driving part (20) and the second connecting part (22). The driving part (20) is used to connect the connecting frame (15), and the second connecting part (22) is used to connect the binding device (5). The clearance part (21) is used to avoid the cabbage when rotating.
5. A cabbage care and bundling machine according to claim 1, characterized in that, The material storage device (4) includes a first housing (23) and a first rotating cylinder (24). The first rotating cylinder (24) is rotatably connected to the inside of the first housing (23). The first rotating cylinder (24) is used for installing plastic film. The first housing (23) is provided with a third through hole (25) for the plastic film to pass through.
6. A cabbage care and bundling machine according to claim 1, characterized in that, The adhesive storage device (3) includes a second housing (26) and a second rotating cylinder (27). The second rotating cylinder (27) is rotatably connected inside the second housing (26). The second rotating cylinder (27) is used for installing adhesive tape. The second housing (26) is provided with a fourth through hole (28) for the adhesive tape to pass through. The side of the second housing (26) near the binding device (5) is arc-shaped.