Diameter detection device for manufacturing electric tool firing pin

Abstract

The invention relates to the technical field of firing pin diameter detection, in particular to a diameter detection device for manufacturing an electric tool firing pin, which mainly comprises a fixing frame, a rotating mechanism, a fixing mechanism and a detection mechanism, wherein a feeding assembly is arranged on one side of the fixing frame, and a detector and a discharging assembly are mounted on the top surface of the fixing frame; the fixing mechanism is arranged above the fixing frame, and the pushing mechanism is arranged above the fixing frame. A block body rotates to an arc-shaped block, the arc-shaped block extrudes the block body to move, the block body drives a connecting rod and a second piston plate to move, the second piston plate pushes hydraulic oil in a cavity to drive a first piston plate to move, the first piston plate drives a push rod and a third T-shaped block to move, and the third T-shaped block drives a push plate to move. The pushing plate pushes the firing pins to be dumped to the discharging assembly and slide into the collecting assembly, the firing pins do not need to be specially carried into the collecting assembly through a carrying assembly, the firing pins are collected, and then the cost of the whole device is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of striker diameter detection, in particular to a diameter detection device for manufacturing strikers of electric tools. BACKGROUND

[0002] In the field of electric tool manufacturing, as a key component, the diameter precision of the striker has a decisive influence on the tool performance and service life. The diameter of the striker directly affects the matching gap with the matching components, the impact force transmission efficiency and the stability of the overall structure. If the diameter deviation exceeds the allowable range, it may cause the tool to appear stuck, accelerated wear or functional failure during operation, thereby affecting production efficiency and product quality. Therefore, in the process of manufacturing strikers, high-precision and high-efficiency detection of the diameter is a core link to ensure that the product meets the design requirements In the process of detecting the diameter of the striker by the detection device, the clamping assembly will first firmly fix the striker, then the detection assembly will accurately measure the diameter of the fixed striker, and after the detection is completed, the clamping assembly will release the fixation of the striker. At this time, a special handling assembly is needed to handle the striker into the collection box to realize the collection of the striker. This additional handling assembly increases the cost of the entire device. SUMMARY

[0003] The purpose of the present application is to provide a diameter detection device for manufacturing strikers of electric tools to solve the problems raised in the background art.

[0004] To achieve the above purpose, the present application provides the following technical scheme: A diameter detection device for manufacturing strikers of electric tools, comprising: a fixed frame, one side of the fixed frame is provided with a feeding assembly, the top surface of the fixed frame is provided with a detector and a discharging assembly, one side of the fixed frame is provided with a collecting assembly, further comprising: A rotating mechanism, the rotating mechanism is arranged above the fixed frame, the rotating mechanism comprises a rotating disc and a circular plate above the fixed frame, the outer side of the circular plate is provided with a stop ring and a fixed ring; A fixing mechanism, the fixing mechanism is arranged above the fixed frame, the fixing mechanism comprises a rotating plate above the rotating disc, a moving slot is formed in the side surface of the rotating plate, a moving plate is slidably installed in the inner wall of the moving slot, a clamping plate is slidably installed on the top surface of the rotating plate, an adjusting block is fixedly installed on the side surface of the moving plate, and a abutting frame one and an abutting frame two are fixedly installed on the inner wall of the fixed ring; A pushing mechanism, the pushing mechanism is arranged above the fixed frame, the pushing mechanism comprises a pushing plate above the rotating plate, and a T-shaped block three is fixedly installed on the bottom surface of the pushing plate.

[0005] Preferably, the inner wall of the fixing frame is fixedly provided with a motor one, the upper end of the output rod of the motor one is rotatably penetrated through the inner wall of the fixing frame and is fixedly connected with the bottom surface of the rotating disc, the top surface of the rotating disc is fixedly connected with the bottom surface of the circular plate, a plurality of limiting grooves and a plurality of groove bodies one are formed in the outer wall of the circular plate, and the groove bodies one are communicated with the limiting grooves.

[0006] Preferably, a plurality of supporting frames are fixedly arranged on the top surface of the fixing frame, and one end of each supporting frame is fixedly connected with the outer wall of the check ring and the outer wall of the fixed ring.

[0007] Preferably, a plurality of mounting grooves are formed in the bottom surface of the rotating disc, a motor two is fixedly arranged on the inner wall of each mounting groove, a groove body two is formed in the top surface of the rotating disc, and the upper end of the output rod of the motor two is rotatably penetrated through the inner wall of the mounting groove and is fixedly connected with the bottom surface of the rotating plate.

[0008] Preferably, two T-shaped grooves one are formed in the top surface of the rotating plate, a T-shaped block one is slidably arranged in the inner wall of each T-shaped groove one, the top surface of the T-shaped block one is fixedly connected with the bottom surface of the clamping plate, and an adjusting column is fixedly arranged on the bottom surface of the T-shaped block one.

[0009] Preferably, a through groove is formed in the inner wall of each T-shaped groove one, two inclined grooves are formed in the top surface of the moving plate, the outer wall of the adjusting column is slidably connected with the inner wall of the through groove and the inner wall of each inclined groove, two T-shaped blocks two are fixedly arranged on the bottom surface of the moving plate, two T-shaped grooves two are formed in the inner wall of the moving groove, and the outer wall of each T-shaped block two is slidably connected with the inner wall of each T-shaped groove two.

[0010] Preferably, the side surface of each T-shaped block two is elastically connected with the inner wall of one side of each T-shaped groove two through an elastic element one, and the outer wall of the adjusting block is slidably connected with the outer wall of the abutting frame one and the outer wall of the abutting frame two.

[0011] Preferably, a T-shaped groove three is formed in the top surface of the rotating plate, the inner wall of the T-shaped groove three is slidably connected with the outer wall of a T-shaped block three, a cavity is arranged in the rotating plate, a piston plate one is slidably arranged on the inner wall of the cavity, a push rod is fixedly arranged on the side surface of the piston plate one, and one end of the push rod is slidably penetrated through the inner wall of the cavity and is fixedly connected with the side surface of the T-shaped block three.

[0012] Preferably, a sliding groove is formed in the side surface of the moving plate and the side surface of the adjusting block, a block body is slidably arranged on the inner wall of the sliding groove, a piston plate two is slidably arranged on the inner wall of the cavity, a connecting rod is fixedly arranged on the side surface of the piston plate two, and one end of the connecting rod is slidably penetrated through the inner wall of the cavity and the side surface of the moving plate and is fixedly connected with the side surface of the block body.

[0013] Preferably, an elastic element two is slidably arranged on the outer wall of the connecting rod, and the two ends of the elastic element two are fixedly connected with the side surface of the block body and the inner wall of the sliding groove.

[0014] Compared with the prior art, the present application has the following beneficial effects: The block rotates to the arc-shaped block, the arc-shaped block extrudes the block to move, the block drives the connecting rod and the second piston plate to move, the second piston plate drives the hydraulic oil inside the cavity to move the first piston plate, the first piston plate drives the push rod and the T-shaped block three to move, the T-shaped block three drives the push plate to move, the push plate pushes the striker to dump to the discharging assembly and slide to the inside of the collecting assembly, without specially borrowing the carrying assembly to carry the striker to the collecting assembly, so that the striker is collected, and the cost of the whole device is reduced; The striker is placed in the limiting groove through the feeding assembly, the motor one drives the rotating disc and the rotating plate to rotate by a certain angle, and the adjusting block is away from the abutting frame one, at this time, the elastic element one pushes the T-shaped block two to move, drives the moving plate to move, and the moving plate drives the adjusting column, the T-shaped block one and the clamping plate to move through the inclined groove, the clamping plate clamps and fixes the striker, when the striker rotates to the detector, the rotating plate and the striker are driven to rotate one circle through the motor two, and the detector can comprehensively detect the diameter of the striker, thereby improving the detection quality and accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the present application; Figure 2 It is a rotating disc three-dimensional structure schematic diagram of the present application; Figure 3 It is a circular plate three-dimensional structure explosion diagram of the present application; Figure 4 It is a rotating plate three-dimensional structure explosion diagram of the present application; Figure 5 It is a moving plate three-dimensional structure explosion diagram of the present application; Figure 6 It is a rotating plate top three-dimensional structure cross section schematic diagram of the present application; Figure 7 It is a rotating plate side three-dimensional structure cross section schematic diagram of the present application; Figure 8 It is a moving plate three-dimensional structure cross section schematic diagram of the present application.

[0016] In the drawing: 1, fixed frame; 101, feeding assembly; 102, detector; 103, collecting assembly; 104, discharging assembly; 2, rotating mechanism; 201, motor one; 202, rotating disc; 203, circular plate; 204, limiting groove; 205, groove one; 206, support frame; 207, check ring; 208, fixed ring; 3. Fixing mechanism; 301. Mounting slot; 302. Motor II; 303. Slot II; 304. Rotating plate; 305. Moving slot; 306. T-slot I; 307. T-block I; 308. Clamping plate; 309. Adjusting column; 310. Through slot; 311. Moving plate; 312. Inclined slot; 313. Adjusting block; 314. T-block II; 315. Elastic element I; 316. T-slot II; 317. Abutment frame I; 318. Abutment frame II; 4. Pushing mechanism; 401. T-slot three; 402. T-block three; 403. Push plate; 404. Cavity; 405. Push rod; 406. Piston plate one; 407. Piston plate two; 408. Connecting rod; 409. Slide groove; 410. Block; 411. Elastic element two; 412. Arc block. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] like Figures 1-8 As shown, this application provides a diameter detection device for manufacturing power tool firing pins, including: a fixed frame 1, a feeding assembly 101 disposed on one side of the fixed frame 1, a detector 102 and a discharging assembly 104 mounted on the top surface of the fixed frame 1, and a collecting assembly 103 disposed on one side of the fixed frame 1, and further including: Rotating mechanism 2 is located above the fixed frame 1. Rotating mechanism 2 includes a turntable 202 and a circular plate 203 located above the fixed frame 1. A retaining ring 207 and a fixing ring 208 are provided on the outer side of the circular plate 203. Specifically, such as Figures 1-8 As shown, a motor 201 is fixedly installed on the inner wall of the fixed frame 1. The upper end of the output rod of the motor 201 rotates through the inner wall of the fixed frame 1 via a bearing seat and is fixedly connected to the bottom surface of the turntable 202. The top surface of the turntable 202 is fixedly connected to the bottom surface of the circular plate 203. The outer wall of the circular plate 203 is provided with multiple limiting grooves 204 and multiple slots 205. The slots 205 are connected to the limiting grooves 204.

[0020] In this embodiment: the motor 201 drives the turntable 202 to rotate, the limiting groove 204 limits the impact pin, and the retaining ring 207 blocks the impact pin.

[0021] Specifically, such as Figures 1-8 As shown, multiple support frames 206 are fixedly installed on the top surface of the fixed frame 1, and one end of the support frame 206 is fixedly connected to the outer wall of the retaining ring 207 and the outer wall of the fixed ring 208.

[0022] In this embodiment: the retaining ring 207 and the fixing ring 208 are supported and fixed by the set support frame 206, and an opening is provided on one side of the retaining ring 207.

[0023] The fixing mechanism 3 is located above the fixing frame 1. The fixing mechanism 3 includes a rotating plate 304 located above the turntable 202. A moving groove 305 is opened on the side of the rotating plate 304. A moving plate 311 is slidably installed on the inner wall of the moving groove 305. A clamping plate 308 is slidably installed on the top surface of the rotating plate 304. An adjusting block 313 is fixedly installed on the side of the moving plate 311. An abutting frame 1 317 and an abutting frame 2 318 are fixedly installed on the inner wall of the fixing ring 208. Specifically, such as Figures 1-8 As shown, the bottom surface of the turntable 202 has multiple mounting slots 301. A second motor 302 is fixedly installed on the inner wall of the mounting slot 301. The top surface of the turntable 202 has a groove 303. The upper end of the output rod of the second motor 302 rotates through the inner wall of the mounting slot 301 and is fixedly connected to the bottom surface of the rotating plate 304.

[0024] In this embodiment: the rotating plate 304 is driven to rotate by the motor 302, and the rotating plate 304 drives the firing pin to rotate, so that the detector 102 can perform a comprehensive inspection of the outer wall of the firing pin.

[0025] Specifically, such as Figures 1-8 As shown, the top surface of the rotating plate 304 has two T-shaped grooves 306. A T-shaped block 307 is slidably installed on the inner wall of the T-shaped groove 306. The top surface of the T-shaped block 307 is fixedly connected to the bottom surface of the clamping plate 308. An adjusting column 309 is fixedly installed on the bottom surface of the T-shaped block 307.

[0026] In this embodiment: the T-shaped groove 306 limits the T-shaped block 307, making the T-shaped block 307 move more stably, which in turn drives the clamping plate 308 to move, and the clamping plate 308 fixes the impact pin.

[0027] Specifically, such as Figures 1-8As shown, the inner wall of the T-shaped groove 306 has a through groove 310, the top surface of the movable plate 311 has two inclined grooves 312, the outer wall of the adjusting column 309 is slidably connected to the inner wall of the through groove 310 and the inner wall of the inclined groove 312, the bottom surface of the movable plate 311 has two T-shaped blocks 314 fixedly installed, the inner wall of the movable groove 305 has two T-shaped grooves 316, and the outer wall of the T-shaped blocks 314 is slidably connected to the inner wall of the T-shaped grooves 316.

[0028] In this embodiment: the T-shaped groove 316 limits the movement of the T-shaped block 314 and the moving plate 311, making the movement of the T-shaped block 314 and the moving plate 311 more stable. The inclined groove 312 drives the adjusting column 309 and the T-shaped block 307 to move, which in turn drives the clamping plate 308 to move.

[0029] Specifically, such as Figures 1-8 As shown, the side of T-shaped block 314 is elastically connected to the inner wall of one side of T-shaped groove 316 via elastic element 315, and the outer wall of adjusting block 313 is slidably connected to the outer wall of abutting frame 317 and the outer wall of abutting frame 318.

[0030] In this embodiment: the elastic element 315 applies elastic force to the T-shaped block 314, and the abutment frame 317 and the abutment frame 318 apply thrust to the adjusting block 313, so that the adjusting block 313 and the moving plate 311 move.

[0031] The pushing mechanism 4 is located above the fixed frame 1. The pushing mechanism 4 includes a pushing plate 403 located above the rotating plate 304. A T-shaped block 402 is fixedly installed on the bottom surface of the pushing plate 403.

[0032] Specifically, such as Figures 1-8 As shown, a T-shaped groove 401 is provided on the top surface of the rotating plate 304. The inner wall of the T-shaped groove 401 is slidably connected to the outer wall of the T-shaped block 402. A cavity 404 is provided inside the rotating plate 304. A piston plate 406 is slidably installed on the inner wall of the cavity 404. A push rod 405 is fixedly installed on the side of the piston plate 406. One end of the push rod 405 slides through the inner wall of the cavity 404 and is fixedly connected to the side of the T-shaped block 402.

[0033] In this embodiment: hydraulic oil is provided inside the cavity 404, and the T-shaped groove 401 limits the movement of the T-shaped block 402, making the movement of the T-shaped block 402 more stable, which in turn drives the push plate 403 to move and push the impact pin out of the material.

[0034] Specifically, such as Figures 1-8As shown, a sliding groove 409 is provided on the side of the movable plate 311 and the side of the adjusting block 313. A block 410 is slidably installed on the inner wall of the sliding groove 409. A piston plate 407 is slidably installed on the inner wall of the cavity 404. A connecting rod 408 is fixedly installed on the side of the piston plate 407. One end of the connecting rod 408 slides through the inner wall of the cavity 404 and the side of the movable plate 311 and is fixedly connected to the side of the block 410.

[0035] In this embodiment: when the block 410 moves, it drives the connecting rod 408 to move, and the connecting rod 408 drives the piston plate 407 to move, which in turn pushes the hydraulic oil inside the cavity 404.

[0036] Specifically, such as Figures 1-8 As shown, an elastic element 411 is slidably installed on the outer wall of the connecting rod 408. The two ends of the elastic element 411 are fixedly connected to the side of the block 410 and the inner wall of the slide groove 409. An arc-shaped block 412 is fixedly installed on the inner wall of the abutting frame 318. The outer wall of the arc-shaped block 412 is slidably connected to the outer wall of the block 410.

[0037] In this embodiment: the elastic element 411 applies elastic force to the block 410, and the arc-shaped block 412 squeezes the block 410, causing the block 410 and the connecting rod 408 to move.

[0038] Specifically, the solution is as follows: Motor 201 drives turntable 202 and circular plate 203 to rotate, simultaneously driving rotating plate 304 and adjusting block 313 to rotate to abutting frame 317. Adjusting block 313 is pressed by abutting frame 317 and moves, driving moving plate 311 to move. Inclined groove 312 on moving plate 311 drives adjusting column 309 to move, causing T-shaped block 307 and two clamping plates 308 to move away from each other and open. At this time, feeding assembly 101 feeds the impact pin to limit groove 2. In step 04, the lower end of the firing pin contacts the top surface of the rotating plate 304. Motor 201 drives the turntable 202 and the firing pin to rotate at a certain angle. Adjusting block 313 moves away from the abutment frame 317. Under the elastic force of elastic element 315, it pushes T-block 314 and moving plate 311 to move. The inclined groove 312 on moving plate 311 drives adjusting column 309 and T-block 307 to move, causing the two clamping plates 308 to clamp and fix the firing pin. When the firing pin rotates to detector 102, motor 201... 2. After the rotating plate 304 and the firing pin rotate one revolution, the detector 102 can perform a comprehensive detection of the firing pin diameter. Then, the motor 201 drives the turntable 202 and the firing pin to rotate to the opening of the retaining ring 207. At this time, the adjusting block 313 is pressed by the abutment frame 318 and moves. The adjusting block 313 drives the moving plate 311 to move. The inclined groove 312 on the moving plate 311 drives the adjusting column 309 and the T-shaped block 307 to move, causing the two clamping plates 308 to move away from each other and open. At the same time, the block 41 0 abuts against the arc-shaped block 412, the arc-shaped block 412 squeezes the block 410 to move, the block 410 drives the connecting rod 408 and piston plate 2 407 to move, the piston plate 2 407 pushes the hydraulic oil inside the cavity 404 and drives piston plate 1 406 to move, piston plate 1 406 drives push rod 405 and T-shaped block 3 402 to move, T-shaped block 3 402 drives push plate 403 to move, push plate 403 pushes the impact pin to tilt to the feeding assembly 104 and slides into the collection assembly 103 for collection.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0040] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A diameter detecting device for manufacturing a striker of a power tool, comprising: The utility model provides a fixed frame (1), one side of the fixed frame (1) is provided with a feeding assembly (101), the top of fixed frame (1) is installed with detector (102) and discharging assembly (104), one side of fixed frame (1) is provided with collection assembly (103), characterized by further include: Rotating mechanism (2), rotating mechanism (2) is arranged above fixed frame (1), rotating mechanism (2) includes carousel (202) and round plate (203) above fixed frame (1), the outer side of round plate (203) is provided with baffle ring (207) and fixed ring (208); Fixing mechanism (3), fixing mechanism (3) is arranged above fixed frame (1), fixing mechanism (3) includes rotating plate (304) above carousel (202), the side of rotating plate (304) is provided with moving groove (305), the inner wall of moving groove (305) is slidably installed with moving plate (311), the top of rotating plate (304) is slidably installed with clamping plate (308), the side of moving plate (311) is fixedly installed with adjusting block (313), the inner wall of fixed ring (208) is fixedly installed with abutment frame one (317) and abutment frame two (318); Pushing mechanism (4), pushing mechanism (4) is arranged above fixed frame (1), pushing mechanism (4) includes pushing plate (403) above rotating plate (304), the bottom of pushing plate (403) is fixedly installed with T-shaped block three (402).

2. The diameter detecting device for manufacturing a striker of a power tool according to claim 1, wherein The inner wall of fixed frame (1) is fixedly installed with motor one (201), the output rod upper end of motor one (201) is rotatably penetrated through the inner wall of fixed frame (1) and is fixedly connected with the bottom of carousel (202), the top of carousel (202) is fixedly connected with the bottom of round plate (203), a plurality of limiting grooves (204) and a plurality of groove bodies one (205) are formed in the outer wall of round plate (203), and the groove body one (205) is communicated with the limiting groove (204).

3. The diameter detecting device for manufacturing a striker of a power tool according to claim 2, wherein A plurality of supporting frames (206) are fixedly installed on the top of fixed frame (1), and one end of the supporting frame (206) is fixedly connected with the outer wall of baffle ring (207) and the outer wall of fixed ring (208).

4. The diameter detecting device for manufacturing a striker of a power tool according to claim 1, wherein A plurality of installation grooves (301) are formed in the bottom of carousel (202), motor two (302) is fixedly installed on the inner wall of installation groove (301), groove body two (303) is formed in the top of carousel (202), and the output rod upper end of motor two (302) is rotatably penetrated through the inner wall of installation groove (301) and is fixedly connected with the bottom of rotating plate (304).

5. The diameter detecting device for manufacturing a striker of a power tool according to claim 3, wherein Two T-shaped grooves one (306) are formed in the top of rotating plate (304), T-shaped block one (307) is slidably installed on the inner wall of T-shaped groove one (306), the bottom of T-shaped block one (307) is fixedly installed with adjusting column (309), and the top of T-shaped block one (307) is fixedly connected with the bottom of clamping plate (308).

6. The diameter detecting device for manufacturing a striker of a power tool according to claim 5, wherein The inner wall of the T-shaped slot one (306) is provided with a through slot (310), the top surface of the moving plate (311) is provided with two inclined slots (312), the outer wall of the adjusting column (309) is in sliding connection with the inner wall of the through slot (310) and the inner wall of the inclined slot (312), the bottom surface of the moving plate (311) is fixedly installed with two T-shaped blocks two (314), the inner wall of the moving slot (305) is provided with two T-shaped slots two (316), and the outer wall of the T-shaped block two (314) is in sliding connection with the inner wall of the T-shaped slot two (316).

7. The diameter detecting device for manufacturing a striker of a power tool according to claim 6, wherein The side surface of the T-shaped block two (314) is elastically connected with one side inner wall of the T-shaped slot two (316) through the elastic element one (315), and the outer wall of the adjusting block (313) is in sliding connection with the outer walls of the abutting frame one (317) and the abutting frame two (318).

8. The diameter detecting device for manufacturing a striker of a power tool according to claim 1, wherein The top surface of the rotating plate (304) is provided with a T-shaped slot three (401), the inner wall of the T-shaped slot three (401) is in sliding connection with the outer wall of the T-shaped block three (402), the inside of the rotating plate (304) is provided with a cavity (404), the inner wall of the cavity (404) is slidably installed with a piston plate one (406), the side surface of the piston plate one (406) is fixedly installed with a push rod (405), one end of the push rod (405) slidably penetrates the inner wall of the cavity (404) and is fixedly connected with the side surface of the T-shaped block three (402).

9. The diameter detecting device for manufacturing a striker of a power tool according to claim 8, wherein The side surface of the moving plate (311) and the side surface of the adjusting block (313) are provided with a sliding groove (409), the inner wall of the sliding groove (409) is slidably installed with a block (410), the inner wall of the cavity (404) is slidably installed with a piston plate two (407), the side surface of the piston plate two (407) is fixedly installed with a connecting rod (408), one end of the connecting rod (408) slidably penetrates the inner wall of the cavity (404) and the side surface of the moving plate (311) and is fixedly connected with the side surface of the block (410).

10. The diameter detecting device for manufacturing a striker of a power tool according to claim 9, wherein The outer wall of the connecting rod (408) is slidably installed with an elastic element two (411), both ends of the elastic element two (411) are fixedly connected with the side surface of the block (410) and the inner wall of the sliding groove (409), the inner wall of the abutting frame two (318) is fixedly installed with an arc-shaped block (412), and the outer wall of the arc-shaped block (412) is in sliding connection with the outer wall of the block (410).

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