Tool guide mechanism for metal piece processing on a planer lathe

Abstract

The present application provides a tool guide mechanism on a planing lathe for metal piece processing, and relates to the technical field of planing equipment. The tool guide mechanism comprises a positioning body, a motor is installed on the inner side of the positioning body, a groove is arranged on the inner top of the positioning body, and a storage assembly is installed on the inner top of the positioning body. A guide sliding rail is installed on the top of the positioning body. A guide sliding block is slidingly installed on the top of the guide sliding rail, and protrusions are arranged on the two sides of the guide sliding block. A transmission rod is rotatably installed on the inner side of the positioning body, and the transmission rod is connected with the motor on the inner side of the positioning body through a chain. The storage assembly comprises a lubricating grease storage box, the lubricating grease storage box is slidingly installed in the groove on the inner top of the positioning body, the lubricating grease passes through the flow guide grooves and enters the sliding contact part between the guide sliding rail and the guide sliding block, and the lubricating grease is quickly covered, thereby solving the problem that the lubricating grease is difficult to uniformly cover the friction interface due to the limited injection path.

Description

Technical Field

[0001] This invention relates to the field of planing tool guiding technology, and particularly to a tool guiding mechanism on a planing lathe for machining metal parts. Background Technology

[0002] Metal parts are components or products made of metal materials. In the process of machining metal parts, a planing lathe is required to remove excess metal from the workpiece by planing, so that its shape, dimensional accuracy and surface quality meet the predetermined requirements. When the cutting tool on the planing lathe moves, a guiding mechanism is required to guide it to ensure the accuracy of the planing.

[0003] When the existing guiding mechanism guides the cutting tool of the planing lathe, the ram drives the tool to move mainly by manually applying grease periodically from one side of the ram. Due to the limited grease injection path, it is difficult to achieve uniform coverage of the friction interface. In addition, the manual dosage control is not precise enough. Excessive grease accumulation attracts metal debris and forms a wear source, while insufficient dosage aggravates sliding wear, causing the ram's movement trajectory to deviate, which directly affects the surface roughness of the metal parts and the tool life. Summary of the Invention

[0004] In view of this, the present invention provides a tool guide mechanism for a planing lathe for machining metal parts, which has a lubrication component that enables grease to be metered and periodically applied to the sliding parts through the guide groove, so that the grease is evenly covered between the guide slide and the guide rail, thereby improving the sliding performance of the guide slide.

[0005] This invention provides a tool guiding mechanism on a planing lathe for metal processing, specifically comprising: a positioning body, the bottom of which is fitted with a base, a threaded hole at the included angle of the base's edge, a motor mounted on the inner side of the positioning body, a slot on the top inner side of the positioning body, and a material storage assembly mounted on the top inner side of the positioning body; the positioning body includes: a guide rail, the top of which has an arc-shaped structure and is mounted on the top of the positioning body; a guide ram, which is slidably mounted on the top of the guide rail and has protrusions on both sides; a transmission rod, which has a cylindrical structure and is rotatably mounted on the inner side of the positioning body, and is connected to the motor on the inner side of the positioning body via a chain; a material storage assembly, which includes a grease reservoir slidably mounted in the slot on the top inner side of the positioning body; a lubrication assembly, which is mounted on the inner side of the positioning body and includes a rotating plate rotatably mounted on the inner side of the positioning body; and a tool changing assembly, which is mounted on the side of the guide ram.

[0006] Optionally, the positioning body further includes: a rotating component, the rotating component having protrusions on its side and the rotating component being mounted at both ends of the transmission rod; and a traction guide plate, the bottom of which is mounted on the outer bottom of the positioning body via a rotating shaft, and the traction guide plate having two slots of different lengths on its side, the protrusions on the side of the rotating component being slidably installed in the longer slot on the side of the traction guide plate, and the protrusions on both sides of the guide slide being slidably installed in the shorter slot on the side of the traction guide plate.

[0007] Optionally, the storage assembly includes: a grease reservoir with a slot at the bottom; a push plate with a rectangular structure, which is mounted on the inner bottom of the grease reservoir by a spring; and a support plate mounted on the top of the push plate by a spring.

[0008] Optionally, the storage assembly further includes: a sealing cover plate, which is L-shaped and slidably mounted on the top of the grease reservoir, with the side of the sealing cover plate connected to the side of the grease reservoir via a spring; a positioning rod, which passes through the side of the sealing cover plate and is mounted on the side of the grease reservoir; and a limiting baffle, which is rectangular and mounted on the side of the positioning body via a spring, with a positioning rod mounted on the side of the limiting baffle.

[0009] Optionally, the lubrication assembly includes: a rotating plate with a plurality of evenly arranged protrusions on its side; a push block with an arc-shaped structure, which is mounted on the outside of the rotating plate and slides through a slot at the bottom of the grease reservoir; and a lever with an arc-shaped outer end, which is located on the outside of the transmission rod and slides on the outside of the protrusions on the side of the rotating plate.

[0010] Optionally, the lubrication assembly further includes: a flow guide channel, which is a cylindrical structure and is located inside the top of the positioning body and the top of the guide rail; and a collection drawer, which is slidably mounted on the top of the positioning body.

[0011] Optionally, the tool changing assembly includes: a support plate with a groove at its bottom and the support plate being mounted on the side of the guide slide; and a guide groove with an annular structure and located on the side of the support plate.

[0012] Optionally, the tool changing assembly further includes: an inner plate, which is circular and rotatably mounted on the inner side of the support plate, and has protrusions on its side that slide within a guide groove; an inner groove, which is rectangular and evenly distributed on the side of the inner plate; and an outer slide plate, which has slots on its side and has magnetic blocks installed on its outer side, which magnetically attach the tool, and the outer slide plate is slidably mounted inside the inner groove by a spring.

[0013] Optionally, the tool changing assembly further includes: an inner slide plate, with protrusions on both sides of the inner slide plate, and the protrusions on both sides of the inner slide plate are slidably installed in the slots on the sides of the outer slide plate by springs; a buffer, with a pulley installed on the inner side of the buffer, and the side of the buffer is installed in the slots at the bottom of the support plate by springs; and a fixing plate, which is slidably installed in the slots at the bottom of the support plate, and the fixing plate is located below the buffer, and a threaded rod is installed at the outer end of the fixing plate through the slots at the bottom of the support plate, and the threaded rod is installed at the bottom outer side of the support plate by a structural component.

[0014] Beneficial effects

[0015] The grease is stored in a grease reservoir. A pusher block pushes a pusher plate and a support plate to move the grease upwards, allowing it to pass through multiple guide grooves and enter the sliding contact area between the guide rail and the guide ram. The grease is applied from the inside. The top of the guide rail has an arc-shaped structure, which allows the grease to be evenly applied to the entire sliding area during the movement of the guide ram. This allows the grease to quickly cover the area, improves the sliding properties of the guide ram, and drives the cutting tool to work.

[0016] In addition, by pushing the protrusion on the outside of the rotating plate with the lever, the large diameter of the rotating plate causes the pusher to move in a certain cycle. The pusher periodically pushes the push plate and the support plate. As the grease in the grease reservoir decreases, the spring pushes the support plate upward, allowing a certain amount of grease to be discharged through the guide groove. This ensures that the grease is used reasonably and evenly, preventing waste due to excessive application or insufficient lubrication due to insufficient application. This reduces the problem of wear sources and improves the precision of metal part machining.

[0017] In addition, the transmission rod drives the lever to move, reducing the amount of manual grease application. This allows the planing lathe to complete the grease application during operation, eliminating the need to stop the lathe to apply grease and thus reducing work efficiency. It also enables timely maintenance of the planing lathe and ensures the orderly movement of the tool guide device.

[0018] In addition, the collection drawer is installed on top of the positioning body and at the bottom of the guide slide, so that the grease containing impurities after use flows into the collection drawer and prevents the discharged grease from flowing onto the planing lathe.

[0019] In addition, two traction guide plates guide the guide slide on both sides, so that the guide slide is subjected to uniform tension on both sides during movement, making the movement of the guide slide more stable and the planing of the parts by the cutting tool more precise.

[0020] In addition, by rotating the inner plate, different sizes of cutting tools can be replaced, making the tool change speed faster and improving the efficiency of metal part processing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0022] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0023] In the attached diagram:

[0024] Figure 1 A schematic diagram of the overall structure according to the present invention is shown;

[0025] Figure 2 A schematic cross-sectional view of the positioning body according to the present invention is shown;

[0026] Figure 3 A three-dimensional structural diagram of the traction guide plate according to the present invention is shown;

[0027] Figure 4 A cross-sectional view of the grease reservoir according to the present invention is shown;

[0028] Figure 5 A schematic diagram of the three-dimensional structure of the rotating plate according to the present invention is shown;

[0029] Figure 6 A schematic cross-sectional view of the support plate according to the present invention is shown;

[0030] Figure 7 A three-dimensional structural diagram of the buffer element according to the present invention is shown;

[0031] Figure 8 A schematic cross-sectional view of the inner plate structure according to the present invention is shown.

[0032] List of reference numerals

[0033] 1. Positioning body; 101. Guide slide rail; 102. Guide slide block; 103. Transmission rod; 104. Rotating component; 105. Traction guide plate;

[0034] 2. Material storage assembly; 201. Grease reservoir; 202. Push plate; 203. Support plate; 204. Sealing cover; 205. Positioning rod; 206. Limiting baffle;

[0035] 3. Lubrication components; 301. Rotating plate; 302. Push block; 303. Toggle lever; 304. Flow guide channel; 305. Collection drawer;

[0036] 4. Tool changing assembly; 401. Support plate; 402. Guide slide; 403. Inner plate; 404. Inner groove; 405. Outer slide plate; 406. Inner slide plate; 407. Buffer; 408. Fixing plate. Detailed Implementation

[0037] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0038] Please refer to Figures 1 to 8 :

[0039] Example 1: This invention proposes a tool guiding mechanism for a planing lathe used for metal machining, comprising: a positioning body 1, a material storage assembly 2, a lubrication assembly 3, and a tool changing assembly 4. A base is mounted on the bottom of the positioning body 1, and threaded holes are provided at the included angle of the base's edge. A motor is mounted on the inner side of the positioning body 1, and a slot is provided on the top inner side of the positioning body 1. The positioning body 1 includes: a guide rail 101, the top of which has an arc-shaped structure, and the guide rail 101 is mounted on the top of the positioning body 1; and a guide ram 102. A sliding mount is provided on the top of the guide rail 101, and protrusions are provided on both sides of the guide ram 102; a transmission rod 103 is cylindrical in shape and is rotatably mounted on the inner side of the positioning body 1, and is connected to a motor inside the positioning body 1 via a chain; a rotating component 104 has protrusions on its side and is mounted on both ends of the transmission rod 103; a traction guide plate 105 is mounted on the bottom of the outer side of the positioning body 1 via a rotating shaft, and the sides of the traction guide plate 105 are also provided. The surface has two slots of different lengths. A protrusion on the side of the rotating component 104 is slidably installed in the longer slot on the side of the traction guide plate 105, and protrusions on both sides of the guide slide 102 are slidably installed in the shorter slot on the side of the traction guide plate 105. A base is installed at the bottom of the positioning body 1 to increase the stability of the positioning body 1. The motor inside the positioning body 1 drives the transmission rod 103 to rotate via a chain. Both ends of the transmission rod 103 pass through the side of the positioning body 1, driving the rotating component 104 to rotate. This causes the protrusions on the side of the rotating component 104 to move along the traction guide plate 105. The guide plate 105 moves within the longer slot on the side, and the bottom of the guide plate 105 moves at the bottom of the positioning body 1, causing the guide plate 105 to move at a certain amplitude. This causes the protrusions on both sides of the guide slide 102 to move within the shorter slot on the side of the guide plate 105, causing the guide slide 102 to move at the top of the guide slide rail 101. The guide slide 102 reciprocates at the top of the guide slide rail 101, causing the guide slide 102 to drive the cutting tool to perform planing. The two guide plates 105 drive the guide slide 102 to move, increasing the stability of the guide slide 102 during movement.

[0040] In Example 2, based on Example 1, a storage assembly 2 is installed on the inner top of the positioning body 1. The storage assembly 2 includes: a grease reservoir 201, which is slidably installed in a slot on the inner top of the positioning body 1, and has a slot at its bottom; a push plate 202, which is rectangular and is spring-mounted to the inner bottom of the grease reservoir 201; and a support plate 203, which is spring-mounted to... At the top of the push plate 202; a sealing cover 204, which is L-shaped and slidably mounted on the top of the grease reservoir 201, with its side connected to the side of the grease reservoir 201 via a spring; a positioning rod 205, which passes through the side of the sealing cover 204 and is mounted on the side of the grease reservoir 201; and a limiting baffle 206, which is rectangular and connected to the side of the grease reservoir 201 via a spring. A positioning rod 205 is installed on the side of the positioning body 1 and the side of the limiting baffle 206. A grease reservoir 201 is slidably installed on the top inner side of the positioning body 1. Grease is filled into the inside of the grease reservoir 201. When the grease reservoir 201 slides inward, when it reaches the bottom of the guide groove 304, the slot on the top inner side of the positioning body 1 pushes the sealing cover 204 to one side, so that the side of the sealing cover 204 moves to one side along the positioning rod 205, so that the sealing cover 204 leaves the top of the grease reservoir 201. At the same time, under the action of the spring, the limiting baffle 206 moves upward to block the side end of the positioning rod 205 and positions the grease reservoir 201. Under the action of the spring, the push plate 202 drives the grease on the top of the support plate 203 to move downward to ensure that more grease is stored. As the amount of grease discharged decreases, the spring pushes the support plate 203 to move upward, so that the support plate 203 ensures that a certain amount of grease is discharged.

[0041] In Example 3, based on Example 1, the lubrication assembly 3 is installed inside the positioning body 1. The lubrication assembly 3 includes: a rotating plate 301, which is rotatably installed inside the positioning body 1, and has multiple evenly arranged protrusions on its side; and a push block 302, which has an arc-shaped structure and is installed outside the rotating plate 301, and slides through a slot at the bottom of the grease reservoir 201 on the push plate 202. At the bottom, the push block 302 lubricates the guide slide block 102 and the guide rail 101 with the grease in the grease reservoir 201, ensuring the sliding of the guide slide block 102; the lever 303 has an arc-shaped outer end and is located on the outside of the transmission rod 103, and is slidably mounted on the outside of the side protrusion of the rotating plate 301; the guide groove 304 has a cylindrical structure and is located on the top of the positioning body 1. The end is inside and the top of the guide slide rail 101; the collection drawer 305 is slidably installed on the top of the positioning body 1. The transmission rod 103 drives the lever 303 to rotate, so that the outer end of the lever 303 moves the protrusion on the outer side of the rotating plate 301, so that the rotating plate 301 rotates inside the positioning body 1, so that the rotating plate 301 drives the outer push block 302 to move to the top, so that the push block 302 pushes the push plate 202 to move, so that the grease in the grease reservoir 201 is applied between the guide slide 102 and the guide slide rail 101 through the guide groove 304, so as to lubricate the movement of the guide slide 102. The rotating plate 301 continues to rotate, so that the push block 302 loses pressure on the push plate 202, so that the grease does not flow outward. After the grease has been working for a period of time, the waste grease discharged is discharged into the collection drawer 305 through the edge of the guide slide 102 and the guide slide rail 101, so that the collection drawer 305 can centrally process the waste grease in the later stage.

[0042] In Example 4, based on Example 1, the tool changing assembly 4 is installed on the side of the guide slide 102. The tool changing assembly 4 includes: a support plate 401, the bottom of which is provided with a groove, and the support plate 401 is installed on the side of the guide slide 102; a guide groove 402, which is an annular structure and is located on the side of the support plate 401; an inner plate 403, which is circular and rotatably installed on the inner side of the support plate 401, and the side of the inner plate 403 is provided with a protrusion that slides within the guide groove 402; and an inner groove 404, which is rectangular. The inner plate 404 has a shaped structure, with the inner groove 404 evenly distributed on the side of the inner plate 403; the outer slide plate 405 has a slot on its side, and a magnetic block is installed on the outer side of the outer slide plate 405, which attracts and installs a cutter, and the outer slide plate 405 is slidably installed inside the inner groove 404 by a spring; the inner slide plate 406 has protrusions on both sides, and the protrusions on both sides of the inner slide plate 406 are slidably installed in the slot on the side of the outer slide plate 405 by a spring; the buffer 407 has a pulley installed on its inner side, and the side of the buffer 407 is installed in the slot at the bottom of the bearing plate 401 by a spring; the fixing plate 408, the fixing plate 409, the inner slide plate 400, the inner slide plate 401, the inner slide plate 404, the inner slide plate 405 has a slot on its side, and a magnetic block is installed on its outer side, which attracts and installs a cutter, and the outer slide plate 405 is slidably installed inside the inner groove 404 by a spring; the inner slide plate 405 has a shaped structure, with the inner groove 404 evenly distributed on the side of the inner plate 404; the outer slide plate 405 has a slot on its side, and a magnetic block is installed on its outer side, which attracts and installs a cutter, and the outer slide plate 405 is slidably installed inside the inner groove 404 by a spring; the inner slide plate 409 has a shaped structure, with the inner groove 404 evenly distributed on the side of the inner plate 404; the outer slide plate 405 has a slot on its side, and a magnetic block is installed on its outer side, which attracts and installs a cutter, and the outer slide plate 409 is slid 8. A fixed plate 408 is slidably installed in the slot at the bottom of the support plate 401, and the fixed plate 408 is located below the buffer 407. The outer end of the fixed plate 408 passes through the slot at the bottom of the support plate 401 and is fitted with a threaded rod. The threaded rod is installed on the outer bottom of the support plate 401 through a structural component. The support plate 401 is installed on the side end of the guide slide 102. Different specifications of cutting tools are moved upward through the slot at the bottom of the support plate 401 and placed sequentially inside the inner groove 404. The cutting tools are attracted by the magnetic block on the outer side of the outer slide plate 405. The protrusion on the side of the inner plate 403 is rotated inside the guide groove 402, so that the inner plate 403 is on the support plate 401. The inner side rotates to change different tools. When the inner groove 404 is located at the bottom slot of the support plate 401, the inner slide plate 406 moves outward in the slot on the side of the outer slide plate 405 under the action of the spring. This pushes the inner slide plate 406 downward, causing the tool to move downward. The tool then pushes the pulleys on the inner side of the two buffers 407 to move. Under the action of the spring, the two buffers 407 buffer the movement speed of the tool, preventing the tool from moving too fast and causing damage. The threaded rod at the outer end of the fixing plate 408 is rotated, causing the two fixing plates 408 to move in the slot at the bottom of the support plate 401. This fixes the tool in place, allowing the metal part to be planed.

[0043] The specific usage and function of this embodiment are as follows: First, select the appropriate cutting tool according to the part to be processed, place the different specifications of cutting tools in the inner groove 404, and fix the cutting tool by the magnetic block on the outer side of the outer slide plate 405. Rotate the inner plate 403 to change the cutting tool, push the inner slide plate 406 to move the cutting tool downward, and under the action of the spring, the two buffers 407 buffer the movement speed of the cutting tool. Then, rotate the threaded rod at the outer end of the fixing plate 408 to fix the cutting tool in place. Then, fill the grease reservoir 201 with grease, and slide the grease reservoir 201 to the top of the inner side of the positioning body 1. The sealing cover 204 moves to one side along the positioning rod 205. At the same time, under the action of the spring, the limiting baffle 206 moves upward to fix the side end of the positioning rod 205. The motor inside the positioning body 1 drives the transmission rod 103 to rotate through the chain. The transmission rod 103 drives the rotating part 104. The side protrusions move within the longer slot on the side of the traction guide plate 105. The traction guide plate 105 swings, causing the guide slide 102 to move on top of the guide rail 101 within the shorter slot on its side. The guide slide 102 drives the cutter to perform planing work. At the same time, the transmission rod 103 drives the lever 303 to rotate the rotating plate 301. The rotating plate 301 drives the push block 302 to push the push plate 202 and the support plate 203 upward, so that the grease in the grease reservoir 201 is applied between the guide slide 102 and the guide rail 101 through the guide groove 304 for lubrication, improving the sliding performance of the guide slide 102. This is more even than manual application of grease. As the rotating plate 301 continues to rotate, the push block 302 loses pressure on the push plate 202. The push plate 202 drives the support plate 203 to return to its original position. As the grease decreases, the support plate 203 moves upward, ensuring that a certain amount of grease is discharged.

[0044] Finally, it should be noted that when describing the position of each component and the mating relationship between them, the present invention usually uses one or a pair of components as examples. However, those skilled in the art should understand that such positions, mating relationships, etc., are also applicable to other components or other pairs of components.

[0045] The above are merely exemplary embodiments of the present invention and are not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A tool guiding mechanism on a planing lathe for machining metal parts, characterized in that, include: The positioning body (1) has a motor installed on its inner side, and a slot is provided on the top of the inner side of the positioning body (1), and a storage assembly (2) is installed on the top of the inner side of the positioning body (1); the positioning body (1) includes: a guide rail (101), which is installed on the top of the positioning body (1); a guide bolster (102), which is slidably installed on the top of the guide rail (101), and has protrusions on both sides of the guide bolster (102); and a transmission rod (103), which is rotatably installed on the inner side of the positioning body (1), and is connected to the positioning body (1) by a chain. The motor is connected to the inside of the positioning body (1); the rotating part (104) has a protrusion on its side and is installed at both ends of the transmission rod (103); the traction guide plate (105) is installed at the bottom of the outer side of the positioning body (1) through a rotating shaft; the traction guide plate (105) has two slots of different lengths on its side, the protrusion on the side of the rotating part (104) is slidably installed in the longer slot on the side of the traction guide plate (105), and the protrusions on both sides of the guide slide block (102) are slidably installed in the shorter slot on the side of the traction guide plate (105); The storage assembly (2) includes: a grease reservoir (201), which is slidably installed in a slot on the top inner side of the positioning body (1), and the bottom of the grease reservoir (201) is provided with a slot; a push plate (202), which is installed on the bottom inner side of the grease reservoir (201) by a spring; a support plate (203), which is installed on the top of the push plate (202) by a spring; and a sealing cover plate (204). 204) Slidingly installed on the top of the grease reservoir (201), and the side of the sealing cover (204) is connected to the side of the grease reservoir (201) by a spring; positioning rod (205), the positioning rod (205) passes through the side of the sealing cover (204) and is installed on the side of the grease reservoir (201); limiting baffle (206), the limiting baffle (206) is installed on the side of the positioning body (1) by a spring, and the positioning rod (205) is installed on the side of the limiting baffle (206); A lubrication assembly (3) is installed inside the positioning body (1), and the lubrication assembly (3) includes a rotating plate (301) and a lever (303). The rotating plate (301) is rotatably installed inside the positioning body (1), and the lever (303) is located outside the transmission rod (103). The side of the rotating plate (301) is provided with a plurality of evenly arranged protrusions. A push block (302) is installed outside the rotating plate (301), and... Push block (302) slides through the slot at the bottom of grease reservoir (201) and is mounted on the bottom of push plate (202); lever (303) slides on the outside of the side protrusion of rotating plate (301); guide channel (304) is located inside the top of positioning body (1) and on the top of guide rail (101); collection drawer (305) slides on the top of positioning body (1); A tool changing assembly (4) is installed on the side of a guide slide (102). The tool changing assembly (4) includes: a support plate (401), the bottom of which is provided with a groove, and the support plate (401) is installed on the side of the guide slide (102); a guide groove (402), which is provided on the side of the support plate (401); an inner plate (403), which is rotatably installed on the inner side of the support plate (401), and the side of the inner plate (403) is provided with a protrusion, which slides in the guide groove (402); an inner groove (404), which is evenly provided on the side of the inner plate (403); and an outer slide plate (405), which is provided with a groove on the side of the outer slide plate (405), and the outer slide plate (405) is provided with a groove, which slides in the guide groove (402); an inner slot (404), which is evenly provided on the side of the inner plate (403); and an outer slide plate (405), which is provided with a groove on the side of the outer slide plate (405). A magnetic block is installed on the outside of the slide plate (405), and the outer slide plate (405) is slidably installed inside the inner groove (404) by a spring; the inner slide plate (406) has protrusions on both sides, and the protrusions on both sides of the inner slide plate (406) are slidably installed in the slot on the side of the outer slide plate (405) by a spring; the buffer (407) has a pulley installed on the inside, and the side of the buffer (407) is installed in the slot at the bottom of the support plate (401) by a spring; the fixing plate (408) is slidably installed in the slot at the bottom of the support plate (401), and the outer end of the fixing plate (408) is installed with a threaded rod through the slot at the bottom of the support plate (401), and the threaded rod is installed on the bottom outside of the support plate (401) by a structural component.

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