Asynchronous double-slider synchronous belt module

Abstract

The utility model discloses an asynchronous double-sliding-block synchronous belt module which comprises a first asynchronous double-sliding-block linear module, a second asynchronous double-sliding-block linear module and a safety area arranged between the first asynchronous double-sliding-block linear module and the second asynchronous double-sliding-block linear module. The first asynchronous double-sliding-block linear module is provided with a set of independent first driving and transmission system based on a first synchronous belt, and the second asynchronous double-sliding-block linear module is provided with a set of independent second driving and transmission system based on a second synchronous belt. According to the utility model, aiming at the application scene of long stroke and fast rhythm of a linear module group, the overall operation efficiency of the module group is increased through the two asynchronous double sliding blocks; a safety area is arranged in the module, so that a double-sliding-block collision accident is avoided; and the structure of the module is improved, and the high-speed performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial automation, and in particular discloses an asynchronous double-slider synchronous belt module. Background Art

[0002] Linear modules primarily enable high-precision linear motion in industrial automation. With the continuous advancement of automation technology, the performance requirements for linear modules are becoming increasingly stringent. This is especially true for applications involving long travels and fast cycles, where the efficiency of a single station is insufficient to meet operational requirements. This often requires linear modules with at least two slides capable of independent, parallel, and high-speed motion.

[0003] With existing multi-slide module technology, the running trajectories of each slide generally overlap. Subject to the influence of multiple factors such as its own rigidity, false triggering, and external interference, the slides may collide with each other, posing a major safety hazard to equipment and personnel.

[0004] In addition, the double-slide module with a screw structure, represented by the announcement number "CN220673551U, a double-slide screw module", has a short stroke, generally less than 2 meters, which is difficult to meet the long-stroke usage requirements of related scenarios. The double-slide module with a linear motor structure, represented by the announcement number "CN211630060U, a double-motor double-drive linear motor module", has poor dynamic rigidity and is prone to resonance; it is also expensive and consumes a lot of energy, and is currently not widely used in the above-mentioned related scenarios. The double-slide module with a synchronous belt structure, represented by the announcement number "CN219566550U, a double-slider module on the same track", generally adopts a ball linear guide structure, which has a bottleneck in movement speed, and has the disadvantages of high maintenance difficulty and poor environmental adaptability. The overall high-speed performance of the module needs to be improved. Utility Model Content

[0005] The utility model provides an asynchronous double-slider synchronous belt module, aiming to solve at least one defect in the above-mentioned prior art.

[0006] One aspect of the present invention relates to an asynchronous dual-slider synchronous belt module, including a first asynchronous dual-slider linear module, a second asynchronous dual-slider linear module, and a safety area arranged between the first asynchronous dual-slider linear module and the second asynchronous dual-slider linear module. The first asynchronous dual-slider linear module is provided with an independent first drive and transmission system based on a first synchronous belt, and the second asynchronous dual-slider linear module is provided with an independent second drive and transmission system based on a second synchronous belt.

[0007] Furthermore, the first asynchronous dual-slider linear module includes a first module body and a first slider slidably connected to the first module body, and the first slider is used to slide within the first slider stroke.

[0008] Furthermore, the first module body includes a first module beam, a first end cover, and a first double-edge V-shaped guide rail. The first module beam is used to support the first double-edge V-shaped guide rail; the first end cover is arranged at the end of the first double-edge V-shaped guide rail.

[0009] Furthermore, the first drive and transmission system includes a first drive component, a first synchronous belt, a first slider docking plate, a first synchronous belt buckle plate, a first driven wheel, a first core shaft, a first driven wheel mounting plate, a first synchronous belt support plate, a first V-shaped roller and a first eccentric V-shaped roller. The first drive component is connected to the first driven wheel mounting plate through the first synchronous belt, the first synchronous belt buckle plate is connected between the first synchronous belt and the first slider docking plate, the first driven wheel is sleeved on the first core shaft and one side of the first core shaft is fixedly connected to the first driven wheel mounting plate, the first synchronous belt support plate is located below the first synchronous belt, and the first V-shaped roller and the first eccentric V-shaped roller are respectively installed on the inner side of the first slider docking plate.

[0010] Furthermore, the first drive assembly includes a first motor mounting plate, a first servo motor, a first reducer, a first active synchronous wheel, a first baffle and a first locking bolt. The first motor mounting plate is connected to the first reducer, the first reducer is installed on the first motor mounting plate, the first active synchronous wheel is sleeved on the main shaft of the first reducer, and the end of the main shaft of the first reducer is locked by the first baffle and the first locking bolt.

[0011] Furthermore, the second asynchronous dual-slider linear module includes a second module body and a second slider slidably connected to the second module body, and the second slider is used to slide within the second slider stroke.

[0012] Furthermore, the second module body includes a second module beam, a second end cover, and a second double-edge V-shaped guide rail. The second module beam is used to support the second double-edge V-shaped guide rail; the second end cover is arranged at the end of the second double-edge V-shaped guide rail.

[0013] Furthermore, the second drive and transmission system includes a second drive assembly, a second synchronous belt, a second slider docking plate, a second synchronous belt buckle plate, a second driven wheel, a second core shaft, a second driven wheel mounting plate, a second synchronous belt support plate, a second V-shaped roller and a second eccentric V-shaped roller. The second drive assembly is connected to the second driven wheel mounting plate through the second synchronous belt, the second synchronous belt buckle plate is connected between the second synchronous belt and the second slider docking plate, the second driven wheel is sleeved on the second core shaft and one side of the second core shaft is fixedly connected to the second driven wheel mounting plate, the second synchronous belt support plate is located below the second synchronous belt, and the second V-shaped roller and the second eccentric V-roller are respectively installed on the inner side of the second slider docking plate.

[0014] The beneficial effects achieved by the utility model are:

[0015] This utility model provides an asynchronous dual-slider synchronous belt module, which utilizes a first asynchronous dual-slider linear module, a second asynchronous dual-slider linear module, and a safety zone disposed between the first and second asynchronous dual-slider linear modules. The first asynchronous dual-slider linear module is equipped with an independent first drive and transmission system based on the first synchronous belt, while the second asynchronous dual-slider linear module is equipped with an independent second drive and transmission system based on the second synchronous belt. This asynchronous dual-slider synchronous belt module, designed for applications involving long-stroke, fast-paced linear modules, utilizes two asynchronous dual-slider modules to increase the module's overall operating efficiency. A safety zone is provided within the module to prevent dual-slider collision accidents. Furthermore, the module's structure is improved to enhance high-speed performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a functional schematic diagram of an asynchronous dual-slider synchronous belt module of the utility model;

[0017] Figure 2 This is a structural diagram of an asynchronous double-slider synchronous belt module of the utility model;

[0018] Figure 3 This is a detailed partial enlarged view of an asynchronous double-slider synchronous belt module of the utility model;

[0019] Figure 4 This is a side sectional view of a first asynchronous dual-slider linear module in an asynchronous dual-slider synchronous belt module of the utility model;

[0020] Figure 5 This is a side sectional view of the second asynchronous double-slider linear module in the asynchronous double-slider synchronous belt module of the utility model;

[0021] Figure 6 This is a schematic diagram of a drive component of an asynchronous dual-slider synchronous belt module of the present invention.

[0022] Description of Figure Numbers:

[0023] 10. First asynchronous dual-slider linear module; 20. Second asynchronous dual-slider linear module; 30. Safety area; 11. First drive and transmission system; 12. First module body; 13. First slider; 121. First module beam; 122. First end cap; 123. First double-edge V-shaped guide rail; 111. First drive assembly; 112. First synchronous belt; 113. First slider docking plate; 114. First synchronous belt buckle plate; 115. First driven pulley; 116. First spindle; 117. First driven pulley mounting plate; 118. First synchronous belt support plate; 1191. First V-shaped roller; 1192. First eccentric V-shaped roller; 1111. First motor mounting plate; 111 2. First servo motor; 1113. First reducer; 1114. First active synchronous wheel; 1115. First baffle; 1116. First locking bolt; 21. Second drive and transmission system; 22. Second module body; 23. Second slider; 221. Second module beam; 222. Second end cover; 223. Second double-edge V-shaped guide rail; 211. Second drive assembly; 212. Second synchronous belt; 213. Second slider docking plate; 214. Second synchronous belt buckle plate; 215. Second driven wheel; 216. Second core shaft; 217. Second driven wheel mounting plate; 218. Second synchronous belt support plate; 2191. Second V-shaped roller; 2192. Second eccentric V-shaped roller. DETAILED DESCRIPTION

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] like Figure 1 and Figure 2 As shown, the first embodiment of the present invention proposes an asynchronous dual-slider synchronous belt module, including a first asynchronous dual-slider linear module 10, a second asynchronous dual-slider linear module 20, and a safety area 30 arranged between the first asynchronous dual-slider linear module 10 and the second asynchronous dual-slider linear module 20. The first asynchronous dual-slider linear module 10 is equipped with an independent first drive and transmission system 11 based on a first synchronous belt 112, and the second asynchronous dual-slider linear module 20 is equipped with an independent second drive and transmission system 21 based on a second synchronous belt 212. In this embodiment, the first asynchronous dual-slider linear module 10 and the second asynchronous dual-slider linear module 20 can adopt existing asynchronous dual-slider linear modules. The first drive and transmission system 11 and the second drive and transmission system 21 can also adopt existing synchronous belt drive and transmission mechanisms.

[0026] In the above structure, see Figures 1 to 6In the asynchronous dual-slider synchronous belt module provided in this embodiment, the first asynchronous dual-slider linear module 10 includes a first module body 12 and a first slider 13 slidably connected to the first module body 12. The first slider 13 is configured to slide within the first slider's travel range. Specifically, the first module body 12 includes a first module beam 121, a first end cap 122, and a first dual-edge V-shaped guide rail 123. The first module beam 121 is configured to support the first dual-edge V-shaped guide rail 123; the first end cap 122 is disposed at the end of the first dual-edge V-shaped guide rail 123.

[0027] Further, see Figures 1 to 6 The asynchronous double-slider synchronous belt module provided in this embodiment includes a first drive and transmission system 11 comprising a first drive assembly 111, a first synchronous belt 112, a first slider docking plate 113, a first synchronous belt buckle plate 114, a first driven wheel 115, a first core shaft 116, a first driven wheel mounting plate 117, a first synchronous belt support plate 118, a first V-shaped roller 1191 and a first eccentric V-shaped roller 1192. The first drive assembly 111 is connected to the first driven wheel 115 via the first synchronous belt 112. The driven wheel mounting plate 117 is connected, the first synchronous belt buckle plate 114 is connected between the first synchronous belt 112 and the first slider docking plate 113, the first driven wheel 115 is sleeved on the first core shaft 116 and one side of the first core shaft 116 is fixedly connected to the first driven wheel mounting plate 117, the first synchronous belt support plate 118 is located below the first synchronous belt 112, and the first V-shaped roller 1191 and the first eccentric V-shaped roller 1192 are respectively installed on the inner side of the first slider docking plate 113.

[0028] Preferably, see Figures 1 to 6 The asynchronous dual-slider synchronous belt module provided in this embodiment, the first drive component 111 includes a first motor mounting plate 1111, a first servo motor 1112, a first reducer 1113, a first active synchronous wheel 1114, a first baffle 1115 and a first locking bolt 1116, the first motor mounting plate 1111 is connected to the first reducer 1113, the first reducer 1113 is installed on the first motor mounting plate 1111, the first active synchronous wheel 1114 is sleeved on the main shaft of the first reducer 1113, and the end of the main shaft of the first reducer 1113 is locked by the first baffle 1115 and the first locking bolt 1116.

[0029] Further, see Figures 1 to 6In the asynchronous dual-slider synchronous belt module provided in this embodiment, the second asynchronous dual-slider linear module 20 includes a second module body 22 and a second slider 23 slidably connected to the second module body 22. The second slider 23 is configured to slide within the second slider's travel range. Specifically, the second module body 22 includes a second module beam 221, a second end cap 222, and a second dual-edge V-shaped guide rail 223. The second module beam 221 is configured to support the second dual-edge V-shaped guide rail 223; the second end cap 222 is disposed at the end of the second dual-edge V-shaped guide rail 223.

[0030] Preferably, see Figures 1 to 6 The asynchronous double-slider synchronous belt module provided in this embodiment, the second drive and transmission system 21 includes a second drive component 211, a second synchronous belt 212, a second slider docking plate 213, a second synchronous belt buckle plate 214, a second driven wheel 215, a second core shaft 216, a second driven wheel mounting plate 217, a second synchronous belt support plate 218, a second V-shaped roller 2191 and a second eccentric V-shaped roller 2192. The second drive component 211 is connected to the second driven wheel 215 through the second synchronous belt 212. The driven wheel mounting plate 217 is connected, the second synchronous belt buckle plate 214 is connected between the second synchronous belt 212 and the second slider docking plate 213, the second driven wheel 215 is sleeved on the second core shaft 216 and one side of the second core shaft 216 is fixedly connected to the second driven wheel mounting plate 217, the second synchronous belt support plate 218 is located below the second synchronous belt 212, and the second V-shaped roller 2191 and the second eccentric V-shaped roller 2192 are respectively installed on the inner side of the second slider docking plate 213.

[0031] The asynchronous dual-slider synchronous belt module provided in this embodiment is designed for application scenarios with long stroke and fast beat of linear modules. The overall operating efficiency of the module is increased by using two asynchronous dual sliders. A safety area is set in the module to avoid dual-slider collision accidents. The structure of the module is improved to enhance high-speed performance.

[0032] like Figures 1 to 6 As shown, the asynchronous dual-slider synchronous belt module provided in this embodiment has the following working principle:

[0033] Schematic diagram of asynchronous double slider synchronous belt module Figure 1 As shown, the design utilizes two asynchronous dual-slider linear modules—a first asynchronous dual-slider linear module 10 and a second asynchronous dual-slider linear module 20—to symmetrically divide the entire module's travel. The actual travel of each asynchronous dual-slider linear module is approximately half of the linear module's overall effective travel. Each set of asynchronous dual-slider linear modules has an independent synchronous belt-based drive and transmission system, which simultaneously drives their independent asynchronous motion, doubling the overall operating efficiency of the asynchronous dual-slider linear modules.

[0034] A safety area 30 is set in the middle of the asynchronous double-slider linear module. The travel of the two asynchronous double-slider linear modules does not cover this safety area, which effectively ensures that the two asynchronous double-slider linear modules will not collide with each other.

[0035] The asynchronous dual-slider linear module utilizes a synchronous belt drive, offering lightweight, low-cost construction and ease of use for long travel scenarios. The guide mechanism utilizes a V-roller guideway, which can withstand higher loads at high speeds, offering greater stability and a longer lifespan. It also requires low installation precision and is suitable for harsher operating environments. After prolonged high-speed wear, the sliders do not need to be replaced; simply adjust the eccentricity of the eccentric V-rollers to ensure continued operation. This reduces maintenance time and incurs no additional financial costs.

[0036] The main structure of the asynchronous double-slider synchronous belt module includes the first module beam, the first module beam, the first end cover, the second end cover, the first double-edge V-shaped guide rail, the first double-edge V-shaped guide rail, the first drive assembly, the first synchronous belt, the first synchronous belt buckle plate, the first slider docking plate, the first driven wheel, the first core shaft, the first driven wheel mounting plate, the first synchronous belt support plate, the second drive assembly, the second synchronous belt, the second synchronous belt buckle plate, the second slider docking plate, the second driven wheel, the second core shaft, the second driven wheel mounting plate, the second synchronous belt support plate and the locking nut assembly, V-shaped roller, eccentric V-shaped roller, etc. Its structural diagram is shown in Figure 2 As shown, the enlarged schematic diagram of the safety area is shown in Figure 3 As shown, the side section view is shown Figure 4 and Figure 5 As shown, the schematic diagram of the drive components is shown in Figure 6 shown.

[0037] Module beam: The module beam is made of aluminum alloy profiles and is the main supporting structure of this module.

[0038] End cap: A dust-proof protective cover at the end of the module beam.

[0039] Double-edge V-shaped guide rail: The guide structure of this module adopts V-shaped roller guide rail structure, which can withstand higher loads at high speed. The double-edge V-shaped guide rail is installed in the center of the top of the module beam. Its cross-sectional shape is shown in Figure 4 The two sliders share a double-edge V-shaped guide rail, each matched with its own V-shaped roller to provide guide support for the sliders.

[0040] First drive assembly / second drive assembly: The drive assemblies are used to provide driving force for their respective sliders. See the schematic diagram of their structure. Figure 5 As shown, it mainly includes a motor mounting plate, a servo motor, a reducer, an active synchronous wheel, a baffle and a locking bolt.

[0041] First synchronous belt / second synchronous belt: The synchronous belt is used for slider transmission. It adopts a large-scale design with large load and high inertia, which improves the high-speed load capacity of the module and facilitates the realization of higher acceleration and speed.

[0042] First slider docking plate / second slider docking plate: The slider docking plate is used to install the external load of this slider, such as a sorting trolley.

[0043] First synchronous belt buckle plate / second synchronous belt buckle plate: The synchronous belt buckle plate is used to connect the synchronous belt and the slider docking plate.

[0044] The first driven wheel, the first core shaft, the first driven wheel mounting plate / the second driven wheel, the second core shaft, the second driven wheel mounting plate: the driven wheel, the core shaft and the driven wheel mounting plate constitute a driven assembly, which cooperates with the driving assembly and the synchronous belt to drive the slider to reciprocate along the V-shaped guide rail.

[0045] First synchronous belt pallet / Second synchronous belt pallet: The synchronous belt pallet is used to support the loose edge of the synchronous belt to prevent it from falling due to excessive length.

[0046] V-type roller, eccentric V-type roller: Figure 3 As shown in the figure, each slider is equipped with two V-rollers and two eccentric V-rollers. The eccentricity of the eccentric V-rollers can be easily adjusted according to the gap, and the entire guide structure is easy to maintain.

[0047] Implementation case: Linear mail sorting robot for mail sorting

[0048] A sorting trolley is placed on each of the two sliders of the linear sorting robot, and each trolley sorts mails synchronously within its travel range. Figure 6 As shown: It mainly includes a double-slider linear module, a first sorting trolley, a second sorting trolley, a first drag chain, a second drag chain, a first drag chain fixing plate, and a second drag chain fixing plate.

[0049] This mail sorting robot only requires one person to operate and can realize multi-way sorting of mail; it can also be combined in multiple layers and equipped with automatic code scanning components to form a truss automatic sorting robot system. Its main working process is:

[0050] Step S10: Manually scan the code and load the first sorting trolley at the first loading position.

[0051] Step S20: The first sorting trolley is moved horizontally to the sorting position; at the same time, the second sorting trolley is manually scanned and loaded at the second loading position.

[0052] Step S30: The belt of the first sorting trolley rotates forward and reverse according to the instruction to sort the mails to the designated workstation; at the same time, the second sorting trolley moves horizontally to the sorting position.

[0053] Step S40: The first sorting trolley moves horizontally to the first loading position; the belt of the second sorting trolley rotates forward and reverse according to the instruction to sort the mails to the designated workstation.

[0054] Step S50: Manually scan the code and load the first sorting trolley at the first loading position; at the same time, the second sorting trolley moves horizontally to the first loading position.

[0055] Step S60, loop in sequence.

[0056] Compared to existing technologies, the asynchronous dual-slider synchronous belt module provided in this embodiment utilizes a first asynchronous dual-slider linear module, a second asynchronous dual-slider linear module, and a safety zone positioned between the first and second asynchronous dual-slider linear modules. The first asynchronous dual-slider linear module is equipped with an independent first drive and transmission system based on a first synchronous belt, while the second asynchronous dual-slider linear module is equipped with an independent second drive and transmission system based on a second synchronous belt. Targeting applications with long linear module travel and fast tempo, the asynchronous dual-slider synchronous belt module provided in this embodiment utilizes two asynchronous dual-slider modules to increase the module's overall operating efficiency. A safety zone is incorporated within the module to prevent dual-slider collision accidents. Furthermore, the module's structure is improved to enhance high-speed performance.

[0057] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Clearly, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, to the extent such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to encompass such changes and modifications.

Claims

1. An asynchronous double-slider synchronous belt module, characterized in that: The invention comprises a first asynchronous double-slider linear module (10), a second asynchronous double-slider linear module (20), and a safety area (30) arranged between the first asynchronous double-slider linear module (10) and the second asynchronous double-slider linear module (20); the first asynchronous double-slider linear module (10) is provided with an independent first drive and transmission system (11) based on a first synchronous belt (112); and the second asynchronous double-slider linear module (20) is provided with an independent second drive and transmission system (21) based on a second synchronous belt (212).

2. The asynchronous dual-slider synchronous belt module according to claim 1, characterized in that: The first asynchronous dual-slider linear module (10) comprises a first module body (12) and a first slider (13) slidably connected to the first module body (12), wherein the first slider (13) is used for sliding within a first slider stroke.

3. The asynchronous dual-slider synchronous belt module according to claim 2, characterized in that: The first module body (12) comprises a first module beam (121), a first end cover (122), and a first double-edge V-shaped guide rail (123); the first module beam (121) is used to support the first double-edge V-shaped guide rail (123); and the first end cover (122) is arranged at the end of the first double-edge V-shaped guide rail (123).

4. The asynchronous dual-slider synchronous belt module according to claim 3, characterized in that: The first drive and transmission system (11) comprises a first drive assembly (111), a first synchronous belt (112), a first slider docking plate (113), a first synchronous belt buckle plate (114), a first driven wheel (115), a first core shaft (116), a first driven wheel mounting plate (117), a first synchronous belt support plate (118), a first V-shaped roller (1191) and a first eccentric V-shaped roller (1192), wherein the first drive assembly (111) is connected to the first driven wheel mounting plate (117) via the first synchronous belt (112), and the first eccentric V-shaped roller (1192) is connected to the first driven wheel mounting plate (117) via the first synchronous belt (112). A synchronous belt buckle plate (114) is connected between the first synchronous belt (112) and the first slider docking plate (113); the first driven wheel (115) is sleeved on the first core shaft (116) and one side of the first core shaft (116) is fixedly connected to the first driven wheel mounting plate (117); the first synchronous belt support plate (118) is located below the first synchronous belt (112); the first V-shaped roller (1191) and the first eccentric V-shaped roller (1192) are respectively installed on the inner side of the first slider docking plate (113).

5. The asynchronous dual-slider synchronous belt module according to claim 4, characterized in that: The first drive assembly (111) comprises a first motor mounting plate (1111), a first servo motor (1112), a first reducer (1113), a first active synchronous wheel (1114), a first baffle (1115) and a first locking bolt (1116); the first motor mounting plate (1111) is connected to the first reducer (1113); the first reducer (1113) is mounted on the first motor mounting plate (1111); the first active synchronous wheel (1114) is sleeved on the main shaft of the first reducer (1113); and the end of the main shaft of the first reducer (1113) is locked by the first baffle (1115) and the first locking bolt (1116).

6. The asynchronous dual-slider synchronous belt module according to claim 1, characterized in that: The second asynchronous dual-slider linear module (20) comprises a second module body (22) and a second slider (23) slidably connected to the second module body (22), wherein the second slider (23) is used for sliding within the second slider stroke.

7. The asynchronous dual-slider synchronous belt module according to claim 6, characterized in that: The second module body (22) comprises a second module beam (221), a second end cover (222), and a second double-edge V-shaped guide rail (223); the second module beam (221) is used to support the second double-edge V-shaped guide rail (223); and the second end cover (222) is arranged at the end of the second double-edge V-shaped guide rail (223).

8. The asynchronous dual-slider synchronous belt module according to claim 7, characterized in that: The second drive and transmission system (21) comprises a second drive assembly (211), a second synchronous belt (212), a second slider docking plate (213), a second synchronous belt buckle plate (214), a second driven wheel (215), a second core shaft (216), a second driven wheel mounting plate (217), a second synchronous belt support plate (218), a second V-shaped roller (2191) and a second eccentric V-shaped roller (2192), wherein the second drive assembly (211) is connected to the second driven wheel mounting plate (217) via the second synchronous belt (212), and the second driven wheel mounting plate (217) is connected to the second eccentric V-shaped roller (2192). The second synchronous belt buckle plate (214) is connected between the second synchronous belt (212) and the second slider docking plate (213), the second driven wheel (215) is sleeved on the second core shaft (216) and one side of the second core shaft (216) is fixedly connected to the second driven wheel mounting plate (217), the second synchronous belt support plate (218) is located below the second synchronous belt (212), and the second V-shaped roller (2191) and the second eccentric V-shaped roller (2192) are respectively installed on the inner side of the second slider docking plate (213).

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