Diamond fretsaw with efficient cutting function

By setting the guide bevel, chip collector and blower on the diamond wire saw workbench, the chip adhesion and cleaning problems are solved, efficient cutting and cleaning are achieved, and cutting efficiency and applicability are improved.

CN223058084UActive Publication Date: 2025-07-04CHANGZHOU AIKETE ELECTROMECHANICAL TECH CO LTD
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Patent Information

Application Number
CN202421890354.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-06
Publication Date
2025-07-04
Estimated Expiration
2034-08-06

AI Technical Summary

Technical Problem

During the cutting process of diamond wire saw, chips are prone to adhere to the diamond blade, resulting in a degradation of cutting performance and difficulty in cleaning cutting debris, affecting cutting efficiency.

Method used

Set the guide inclined surface and chip collector groove on the top surface of the workbench, and install a blow pipe and air nozzle on the guide inclined surface to remove chips by purge by air source. Debris slide along the inclined surface into the chip collector groove to avoid adhesion of the edge. At the same time, reduce debris interference through the chamfered surface and improve cleaning efficiency.

Benefits of technology

Effectively maintain the sharpness of diamond blade, improve cutting efficiency, enhance cleaning efficiency, improve applicability and flexibility, and adapt to different workpiece shapes and sizes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an efficient cutting diamond fretsaw, and belongs to the technical field of cutting equipment, the efficient cutting diamond fretsaw comprises a workbench, the workbench is provided with a clamping mechanism used for clamping a workpiece, the top surface of the workbench is provided with a guide inclined surface, and the inclined lower end of the guide inclined surface is provided with a chip collecting groove; an air blowing pipe with the two ends closed is horizontally arranged at the inclined upper end of the guide inclined face, an air nozzle is arranged on the air blowing pipe, and a plurality of air blowing holes are formed in the side, close to the chip collecting groove, of the air blowing pipe and all face the guide inclined face. After the air nozzle is externally connected with the air source, the air blowing pipe blows air towards the clamping mechanism through the air blowing hole, the fret saw body passing through the clamping mechanism can be efficiently blown in time, so that chips on the surface of the fret saw body are removed, and the situation that the cutting performance is reduced due to the fact that a diamond cutting edge of the fret saw body is covered with the chips is avoided; therefore, the sharpness of the diamond cutting edge on the surface of the fret saw body is guaranteed, and the cutting efficiency of the fret saw is improved.
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Description

Technical Field

[0001] The present application relates to the field of cutting equipment, and particularly to a diamond wire saw for efficient cutting. Background Art

[0002] Brittle and hard materials such as silicon materials, sapphires, and ceramics are difficult to cut by ordinary processing methods because they are hard and brittle, and are prone to breakage and damage during cutting, resulting in material damage and reduced yield. For the above problems, diamond wire saws have gradually emerged. When using a band saw for cutting and truncating, and cutting into squares, the cutting efficiency is high, but the cut width is wide and the cutting surface is uneven.

[0003] The diamond wire cutting machine adopts the method of unidirectional or reciprocating cyclic movement of the diamond wire, so that a relative grinding movement is formed between the diamond wire and the workpiece to be cut, thereby achieving the purpose of cutting. The diamond wire cutting machine can cut conductive and non-conductive materials (as long as the hardness is smaller than that of the diamond wire).

[0004] In use, when the diamond wire saw is cutting, a part of the chips will continuously adhere to the surface of the diamond wire, resulting in a decrease in cutting ability or even a complete loss of cutting ability, thereby affecting the cutting efficiency of the diamond wire saw. In addition, a part of the cutting debris will fall on the workbench, which is inconvenient to clean. Summary of the Utility Model

[0005] In order to ensure the cutting sharpness of the diamond wire saw and thus improve the cutting efficiency, the present application provides a diamond wire saw for efficient cutting.

[0006] A diamond wire saw for efficient cutting provided by the present application adopts the following technical solutions:

[0007] A diamond wire saw for efficient cutting includes a workbench, a clamping mechanism for clamping a workpiece is provided on the workbench, a guiding inclined surface is provided on the top surface of the workbench, a chip collecting groove is provided at the lower inclined end of the guiding inclined surface, a blow pipe with both ends closed lies horizontally at the upper inclined end of the guiding inclined surface, an air nozzle is provided on the blow pipe, and a plurality of air blowing holes are provided on one side of the blow pipe close to the chip collecting groove, and all the plurality of air blowing holes are arranged towards the clamping mechanism.

[0008] By adopting the above technical solution, when the wire saw body cuts the workpiece clamped by the clamping mechanism, after connecting the air nozzle to an external air source, the blowing pipe blows air towards the clamping mechanism through the blowing holes, which can timely and efficiently purge the surface of the wire saw body passing through the clamping mechanism, thereby removing the debris on its surface. Moreover, the blown debris slides down along the guiding inclined surface and falls into the chip collection groove, preventing the diamond cutting edge of the wire saw body from being adhered and covered by chips, resulting in a reduction in cutting performance. Thus, the sharpness of the diamond cutting edge on the surface of the wire saw body is ensured, which is beneficial to improving the cutting efficiency of the wire saw. By providing a guiding inclined surface on the top surface of the workbench, it helps to prompt the cutting debris on the workbench to slide along the guiding inclined surface, and the chip collection groove at the lower end of the guiding inclined surface can collect the fallen cutting debris.

[0009] Optionally, the clamping mechanism includes a fixed plate and a moving plate provided on the guiding inclined surface. The length directions of the fixed plate and the moving plate are the same as the length direction of the guiding inclined surface, and a first driving member for driving the moving plate to move towards the fixed plate is provided on the workbench.

[0010] Optionally, chamfered surfaces are provided on one sides of the fixed plate and the moving plate close to the blowing pipe.

[0011] By adopting the above technical solution, when the cutting debris on the workbench slides down along the guiding inclined surface and touches the fixed plate or the moving plate, due to the setting of the chamfered surface, the cutting debris will gradually avoid the fixed plate or the moving plate along the chamfered surface, reducing the interference of the fixed plate and the moving plate on the sliding movement of the cutting debris, which is beneficial to further improving the cleaning efficiency of the workbench.

[0012] Optionally, adjusting blocks are detachably connected to opposite sides of the fixed plate and the moving plate, and clamping surfaces adapted to the outer sides of the workpiece are provided on opposite sides of the two adjusting blocks.

[0013] By adopting the above technical solution, adjusting blocks suitable for the shape and size specifications of the workpiece to be cut can be selected, improving the applicability of the wire saw.

[0014] Optionally, it further includes a ground rail and a gantry straddling the ground rail. The workbench is arranged on the ground rail, a first driving mechanism for driving the workbench to move along the ground rail is provided on the ground rail, a wire saw body and a power mechanism for driving the wire saw body to move axially in a cycle are provided on the gantry, and a second driving mechanism for driving the power mechanism to move up and down is further provided on the gantry.

[0015] By adopting the above technical solution, through the horizontal feeding movement of the workbench by the first driving mechanism and the vertical feeding movement of the power mechanism and the wire saw body by the second driving mechanism, after the combination of the speeds in two different directions, it is convenient for the wire saw to process curved surfaces with various arcs, thereby improving the applicability and flexibility of the wire saw.

[0016] Optionally, the power mechanism includes a first moving frame and a second moving frame. The first moving frame is arranged on one of the columns of the gantry, and the second moving frame is arranged on the other column of the gantry. A driving wheel and a second driving member for driving the driving wheel to rotate are provided on the first moving frame. A driven wheel is provided on the second moving frame. The wire saw body is sleeved on the driving wheel and the driven wheel. The first moving frame and the second moving frame are respectively connected to the second driving mechanism.

[0017] By adopting the above technical solution, when the second driving member drives the driving wheel to rotate, the driven wheel rotates and the wire saw body moves axially along itself in a cycle, so as to realize the grinding and cutting of the workpiece.

[0018] Optionally, the second driving mechanism includes a transverse transmission rod and a vertical lead screw. The transverse transmission rod is rotatably arranged on the cross beam of the gantry. A driving assembly for driving the transverse transmission rod to rotate is provided on the gantry. There are two vertical lead screws which are respectively rotatably arranged on the two columns of the gantry along the vertical direction. The transverse transmission rod is respectively connected to the two vertical lead screws through bevel gear sets. A lifting block is threadedly connected to each vertical lead screw. The lifting block is slidably connected to the corresponding column of the gantry along the vertical direction. One of the lifting blocks is connected to the first moving frame, and the other lifting block is connected to the second moving frame.

[0019] By adopting the above technical solution, when the driving assembly is started, it drives the transverse transmission shaft to rotate, and then converts the transverse rotation of the transverse transmission assembly into the vertical rotation of the vertical lead screw through the bevel gear set. The rotation of the vertical lead screw drives the corresponding lifting block to move up and down, so as to realize the purpose of synchronously lifting the first moving frame and the second moving frame.

[0020] Optionally, a fixed bottom frame is provided on the second moving frame. An adjusting frame is horizontally slidably arranged on the fixed bottom frame. The driven wheel is rotatably connected to the adjusting frame. An elastic member is provided on one side of the adjusting frame close to the first moving frame. One end of the elastic member is connected to the fixed bottom frame, and the other end is connected to the adjusting frame.

[0021] By adopting the above technical solution, through the arrangement of the elastic member and the adjusting frame, the elastic member can force the adjusting frame to move away from the first moving frame as much as possible, so that the driven wheel tensions the wire saw body, realizing the tension adjustment of the wire saw body.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By setting the air blowing pipe and the air nozzle, when the wire saw body cuts the workpiece clamped by the clamping mechanism, after connecting the air nozzle to an external air source, the air blowing pipe blows air towards the clamping mechanism through the air blowing holes, which can timely and efficiently purge the surface of the wire saw body passing through the clamping mechanism, thereby removing the debris on its surface. Moreover, the blown debris slides down along the guiding inclined plane and falls into the chip collecting groove, preventing the diamond cutting edge of the wire saw body from being adhered and covered by chips, which may lead to a reduction in cutting performance. Thus, it ensures the sharpness of the diamond cutting edge on the surface of the wire saw body, which is beneficial to improving the cutting efficiency of the wire saw. By setting the guiding inclined plane on the top surface of the workbench, it helps to promote the cutting debris on the workbench to slide along the guiding inclined plane, and the chip collecting groove at the lower end of the guiding inclined plane can collect the fallen cutting debris.

[0024] 2. Through the setting of the chamfered surface, when the cutting debris on the workbench slides down along the guiding inclined plane and touches the fixed plate or the moving plate, due to the setting of the chamfered surface, the cutting debris will gradually avoid the fixed plate or the moving plate along the chamfered surface, reducing the interference caused by the fixed plate and the moving plate to the sliding movement of the cutting debris, which is beneficial to improving the cleaning efficiency of the workbench.

[0025] 3. Through the setting of the adjusting block and the clamping surface, an appropriate adjusting block can be selected according to the shape and size specifications of the workpiece to be cut, improving the applicability of the wire saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram of a high-efficiency cutting diamond wire saw according to an embodiment of the present application.

[0027] Figure 2 is the structural schematic diagram showing the first driving mechanism in an embodiment of the present application.

[0028] Figure 3 is the structural schematic diagram showing the power mechanism in an embodiment of the present application.

[0029] Figure 4 is the structural schematic diagram showing the second driving mechanism in an embodiment of the present application.

[0030] Figure 5 is the structural schematic diagram showing the driving assembly in an embodiment of the present application.

[0031] Figure 6 is the structural schematic diagram showing the connection relationship among the fixed chassis, the elastic member and the adjusting frame in an embodiment of the present application.

[0032] Figure 7 is the structural schematic diagram showing the clamping mechanism in an embodiment of the present application.

[0033] Description of reference numerals: 1. Ground rail; 11. First driving mechanism; 2. Gantry; 21. Wire saw body; 22. Power mechanism; 221. First moving frame; 222. Second moving frame; 2221. Fixed base frame; 2222. Adjusting frame; 2223. Elastic member; 223. Driving wheel; 224. Second driving member; 225. Driven wheel; 23. Second driving mechanism; 231. Horizontal transmission rod; 232. Vertical lead screw; 2321. Lifting block; 233. Bevel gear set; 24. Driving assembly; 241. Driving motor; 242. Worm; 243. Worm gear; 3. Workbench; 31. Clamping mechanism; 311. Fixed plate; 312. Moving plate; 313. Adjusting block; 3131. Clamping surface; 314. Chamfered surface; 32. Guide inclined surface; 33. Chip collection groove; 34. Air blowing pipe; 341. Air nozzle; 342. Air blowing hole; 35. First driving member. Detailed implementation manners

[0034] The following will Figures 1-7 further elaborate on this application in conjunction with the attached drawings.

[0035] Embodiment:

[0036] The embodiment of this application discloses a diamond wire saw for efficient cutting. Refer to Figure 1 A diamond wire saw for efficient cutting includes a ground rail 1 and a gantry 2 straddling the ground rail 1. A workbench 3 and a first driving mechanism 11 for driving the workbench 3 to move along the ground rail 1 are provided on the ground rail 1. A clamping mechanism 31 for clamping a workpiece is provided on the workbench 3. A wire saw body 21 and a power mechanism 22 for driving the wire saw body 21 to move axially in a cyclic manner along itself are provided on the gantry 2. A second driving mechanism 23 for driving the power mechanism 22 to move up and down is further provided on the gantry 2.

[0037] Refer to Figures 1-2 The first driving mechanism 11 is a lead screw slider mechanism. Through the horizontal feeding movement of the workbench 3 by the first driving mechanism 11 and the vertical feeding movement of the power mechanism 22 and the wire saw body 21 by the second driving mechanism 23, after the speed synthesis in two different directions, it is convenient for the wire saw to process curved surfaces with various radian, thereby improving the applicability and flexibility of the wire saw.

[0038] Refer to Figures 3-4, the power mechanism 22 includes a first moving frame 221 and a second moving frame 222. The first moving frame 221 is slidably arranged on one of the columns of the gantry 2 in the vertical direction, and the second moving frame 222 is slidably arranged on the other column of the gantry 2 in the vertical direction. A driving wheel 223 and a second driving member 224 for driving the driving wheel 223 to rotate are installed on the first moving frame 221. A driven wheel 225 is arranged on the second moving frame 222. The wire saw body 21 is sleeved on the driving wheel 223 and the driven wheel 225. The first moving frame 221 and the second moving frame 222 are respectively connected to the second driving mechanism 23. In this embodiment, the second driving member 224 is a motor and is in transmission connection with the driving wheel 223 in a belt pulley connection manner. When the second driving member 224 drives the driving wheel 223 to rotate, while the driven wheel 225 rotates, the wire saw body 21 moves cyclically along its own axis, so as to realize the grinding and cutting of the workpiece.

[0039] Refer to Figures 4-5 , the second driving mechanism 23 includes a transverse transmission rod 231 and a vertical lead screw 232. The transverse transmission rod 231 is rotatably arranged on the cross beam of the gantry 2. A driving assembly 24 for driving the transverse transmission rod 231 to rotate is provided on the gantry 2. There are two vertical lead screws 232, which are respectively rotatably arranged on the two columns of the gantry 2 in the vertical direction. The transverse transmission rod 231 is in transmission connection with the two vertical lead screws 232 respectively through bevel gear sets 233. A lifting block 2321 is threadedly connected to each vertical lead screw 232. The lifting block 2321 is slidably connected to the corresponding column of the gantry 2 in the vertical direction. One of the lifting blocks 2321 is fixedly connected to the first moving frame 221, and the other lifting block 2321 is fixedly connected to the second moving frame 222.

[0040] Refer to Figures 4-5 , the driving assembly 24 includes a driving motor 241, a worm 242 and a worm gear 243. The driving motor 241 is fixedly connected to the side wall of the cross beam of the gantry 2. The worm 242 is coaxially fixed to the output end of the driving motor 241. The worm gear 243 is coaxially fixed on the transverse transmission rod 231. The worm gear 243 meshes with the worm 242. When the driving motor 241 is started, the transverse transmission rod 231 is driven to rotate through the transmission of the worm gear 243 and the worm 242. Then, the transverse rotation of the transverse transmission group is converted into the vertical rotation of the vertical lead screw 232 through the bevel gear set 233. The rotation of the vertical lead screw 232 drives the corresponding lifting block 2321 to move up and down, so as to realize the purpose of synchronously lifting the first moving frame 221 and the second moving frame 222.

[0041] Refer to Figure 3 and Figure 6, a fixed chassis 2221 is fixed on the second moving frame 222. An adjusting frame 2222 is horizontally slidably arranged on the fixed chassis 2221. The driven wheel 225 is rotatably connected to the adjusting frame 2222. An elastic member 2223 is installed on one side of the adjusting frame 2222 close to the first moving frame 221. One end of the elastic member 2223 is connected to the fixed chassis 2221, and the other end is connected to the adjusting frame 2222. In this embodiment, the elastic member 2223 is a spring rod. Through the arrangement of the elastic member 2223 and the adjusting frame 2222, the elastic member 2223 can force the adjusting frame 2222 to be as far away from the first moving frame 221 as possible, thereby making the driven wheel 225 tension the wire saw body 21 and realizing the tension adjustment of the wire saw body 21.

[0042] Refer to Figure 2 and Figure 7 , a guiding inclined plane 32 is provided on the top surface of the workbench 3. A chip collecting groove 33 is installed at the inclined lower end of the guiding inclined plane 32. A blow pipe 34 with both ends closed is horizontally fixed at the inclined upper end of the guiding inclined plane 32. A nozzle 341 is communicated with the blow pipe 34. A plurality of blow holes 342 are formed on one side of the blow pipe 34 close to the chip collecting groove 33, and all the plurality of blow holes 342 are arranged towards the guiding inclined plane 32. By providing the guiding inclined plane 32 on the top surface of the workbench 3, it helps to make the cutting debris on the workbench 3 slide down along the guiding inclined plane 32, and the chip collecting groove 33 at the lower end of the guiding inclined plane 32 can collect the dropped cutting debris. In addition, when the wire saw body 21 cuts the workpiece clamped by the clamping mechanism 31, after connecting the nozzle 341 to an external air source, the blow pipe 34 blows air towards the clamping mechanism 31 through the blow holes 342, which can timely and efficiently remove the debris on the surface of the wire saw body 21, and the blown debris slides down along the guiding inclined plane 32 and falls into the chip collecting groove 33, avoiding the diamond cutting edge of the wire saw body 21 being adhered and covered by chips, resulting in a reduction in cutting performance, thereby ensuring the sharpness of the diamond cutting edge on the surface of the wire saw body 21 and being beneficial to improving the cutting efficiency of the wire saw.

[0043] Refer to Figure 2 and Figure 7, the clamping mechanism 31 includes a fixed plate 311 and a moving plate 312. The fixed plate 311 is fixed on the guiding inclined surface 32, and the moving plate 312 is slidably arranged on the guiding inclined surface 32. The length directions of the fixed plate 311 and the moving plate 312 are the same as the length direction of the guiding inclined surface 32. A first driving member 35 for driving the moving plate 312 to move towards the fixed plate 311 is provided on the workbench 3. In this embodiment, the first driving member 35 is one of a cylinder, a pneumatic telescopic rod or an electric telescopic rod. Adjusting blocks 313 are detachably connected to the opposite sides of the fixed plate 311 and the moving plate 312, and clamping surfaces 3131 adapted to the outer sides of the workpiece are provided on the opposite sides of the two adjusting blocks 313. In this embodiment, the adjusting block 313 and the corresponding fixed plate 311 or moving plate 312 are detachably connected by means of bolt connection. In this way, the suitable adjusting block 313 can be selected according to the shape and size specifications of the workpiece to be cut, improving the applicability of the clamping mechanism 31 and further improving the applicability of the wire saw.

[0044] Referring to Figure 7 , chamfered surfaces 314 are provided on the sides of the fixed plate 311 and the moving plate 312 close to the air blowing pipe 34. In this way, when the cutting debris on the workbench 3 slides down along the guiding inclined surface 32 and touches the fixed plate 311 or the moving plate 312, due to the setting of the chamfered surface 314, the cutting debris will gradually avoid the fixed plate 311 or the moving plate 312 along the chamfered surface 314, reducing the interference of the fixed plate 311 and the moving plate 312 on the downward movement of the cutting debris, which is beneficial to improving the cleaning efficiency of the workbench 3.

[0045] The above are all the preferred embodiments of this application. The protection scope of this application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. A diamond wire saw for efficient cutting, comprising a workbench (3), wherein a clamping mechanism (31) for clamping a workpiece is arranged on the workbench (3), and it is characterized in that: The top surface of the workbench (3) is provided with a guiding inclined surface (32). A chip collecting groove (33) is provided at the lower inclined end of the guiding inclined surface (32). A blow pipe (34) with both ends closed lies horizontally at the upper inclined end of the guiding inclined surface (32). The blow pipe (34) is provided with air nozzles (341). A plurality of air blowing holes (342) are provided on the side of the blow pipe (34) close to the chip collecting groove (33). A plurality of the air blowing holes (342) are all arranged towards the clamping mechanism (31).

2. The high-efficiency cutting diamond wire saw according to claim 1, wherein: The clamping mechanism (31) includes a fixing plate (311) and a moving plate (312) arranged on the guiding inclined surface (32). The length directions of the fixing plate (311) and the moving plate (312) are the same as the length direction of the guiding inclined surface (32). The workbench (3) is provided with a first driving member (35) for driving the moving plate (312) to move towards the fixing plate (311).

3. The high-efficiency cutting diamond wire saw according to claim 2, wherein: Chamfered surfaces (314) are provided on the sides of the fixing plate (311) and the moving plate (312) close to the blow pipe (34).

4. The high-efficiency cutting diamond wire saw according to claim 2, wherein: Adjusting blocks (313) are detachably connected to the opposite sides of the fixing plate (311) and the moving plate (312). Clamping surfaces (3131) adapted to the outer sides of the workpiece are provided on the opposite sides of the two adjusting blocks (313).

5. The high-efficiency cutting diamond wire saw according to claim 1, wherein: It further includes a ground rail (1) and a gantry (2) straddling the ground rail (1). The workbench (3) is arranged on the ground rail (1). The ground rail (1) is provided with a first driving mechanism (11) for driving the workbench (3) to move along the ground rail (1). A wire saw body (21) and a power mechanism (22) for driving the wire saw body (21) to move in a cyclic motion along its own axis are provided on the gantry (2). A second driving mechanism (23) for driving the power mechanism (22) to move up and down is further provided on the gantry (2).

6. The high-efficiency cutting diamond wire saw according to claim 5, wherein: The power mechanism (22) includes a first moving frame (221) and a second moving frame (222). The first moving frame (221) is arranged on one of the columns of the gantry (2). The second moving frame (222) is arranged on the other column of the gantry (2). A driving wheel (223) and a second driving member (224) for driving the driving wheel (223) to rotate are provided on the first moving frame (221). A driven wheel (225) is provided on the second moving frame (222). The wire saw body (21) is sleeved on the driving wheel (223) and the driven wheel (225). The first moving frame (221) and the second moving frame (222) are respectively connected to the second driving mechanism (23).

7. The high-efficiency cutting diamond wire saw according to claim 6, wherein: The second driving mechanism (23) includes a transverse transmission rod (231) and a vertical lead screw (232). The transverse transmission rod (231) is rotatably arranged on the cross beam of the gantry (2). A driving assembly (24) for driving the transverse transmission rod (231) to rotate is provided on the gantry (2). There are two vertical lead screws (232), which are respectively rotatably arranged on the two columns of the gantry (2) along the vertical direction. The transverse transmission rod (231) is respectively connected to the two vertical lead screws (232) through bevel gear sets (233). A lifting block (2321) is threadedly connected to each vertical lead screw (232). The lifting block (2321) is slidably connected to the corresponding column of the gantry (2) along the vertical direction. One of the lifting blocks (2321) is connected to the first moving frame (221), and the other lifting block (2321) is connected to the second moving frame (222).

8. The high-efficiency cutting diamond wire saw according to claim 6, characterized in that: A fixed base frame (2221) is provided on the second moving frame (222). An adjusting frame (2222) is slidably arranged horizontally on the fixed base frame (2221). The driven wheel (225) is rotatably connected to the adjusting frame (2222). An elastic member (2223) is provided on one side of the adjusting frame (2222) close to the first moving frame (221). One end of the elastic member (2223) is connected to the fixed base frame (2221), and the other end is connected to the adjusting frame (2222).