An anti-offset conveying mechanism for spunlace non-woven fabric and its working method

Abstract

The present invention discloses an anti-offset conveying mechanism for spunlace non-woven fabrics and its working method, which includes a conveying table, comprising a table frame and a conveyor belt rotatably arranged within the table frame; an anti-offset assembly, including two support members arranged on the table frame and two pressing members symmetrically arranged on the support members, and the support members and the pressing members intersect to form a square-shaped structure. The present invention is provided with an anti-offset assembly. The two anti-offset pressing belts of the anti-offset assembly press the fabric on the conveying table, clamping the fabric between the anti-offset pressing belts and the conveyor belt to prevent the fabric from offsetting. Moreover, during the downward pressing process, the anti-offset pressing belts will also move outward, tensioning and flattening the fabric below the anti-offset pressing belts, which is beneficial to the fabric conveying.

Description

Technical Field

[0001] The present invention relates to the technical field of spunlace non-woven fabric conveying, in particular to an anti-offset conveying mechanism for spunlace non-woven fabric and its working method. Background Art

[0002] Spunlace non-woven fabric is made by spraying high-pressure micro water jets onto one or more fiber webs, so that the fibers are entangled with each other, thereby strengthening the fiber web to have a certain strength. The obtained fabric is spunlace non-woven fabric. Its fiber raw materials are widely sourced and can be polyester, nylon, polypropylene, viscose fiber, chitin fiber, superfine fiber, tencel, silk, bamboo fiber, wood pulp fiber, seaweed fiber, etc.

[0003] When the spunlace non-woven fabric is conveyed through the conveying table, it is inevitable that the fabric will shift. Although anti-offset baffles are provided on both sides of the conveying table, when the fabric shifts, the side of the fabric will lean against the baffle obliquely, making it difficult to achieve the anti-offset effect. Therefore, to solve the problem of fabric offset, the present invention proposes an anti-offset conveying mechanism for spunlace non-woven fabric and its working method to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-offset conveying mechanism for spunlace non-woven fabric and its working method to solve the problem of fabric offset during the conveying of spunlace non-woven fabric as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An anti-offset conveying mechanism for spunlace non-woven fabric, including a conveying table, which includes a table frame and a conveyor belt rotatably arranged in the table frame;

[0006] An anti-offset component, including two support members arranged on the table frame and two pushing members symmetrically arranged on the support members, and the support members and the pushing members intersect to form a square structure;

[0007] The support member includes two screw rod slides, a first slider slidably arranged on the screw rod slides, and a bearing rod. The bottom of the screw rod slide is installed on the table frame, the bearing rod is arranged between the two screw rod slides, and both ends of the bearing rod are connected to the first sliders of the two screw rod slides;

[0008] The pushing member includes a square shell and an anti-offset pushing belt arranged on one side of the square shell, and the square shell is slidably arranged on the bearing rod of the support member;

[0009] The pushing member further includes two bearing shafts and two sprockets symmetrically arranged at both ends of the square shell. The sprocket is inserted at one end of the bearing shaft, and the anti-offset pushing belt is sleeved on the sprocket;

[0010] A first limiting ring is arranged on one side of the bearing shaft where it is located on the sprocket, and a nut is threadedly connected to the other side of the bearing shaft where it is located on the sprocket;

[0011] One end of the bearing shaft away from the sprocket extends into the square shell. A spring telescopic rod is arranged above the bearing shaft, and one end of the spring telescopic rod is installed on the square shell, and the other end of the spring telescopic rod is provided with a collar;

[0012] The bearing shaft is inserted through the collar of the spring telescopic rod. The first limiting ring on the bearing shaft is located on one side of the collar, and a second limiting ring is arranged on the other side of the bearing shaft where it is located on the collar;

[0013] A spring is also sleeved between the collar and the first limiting ring on the bearing shaft. One end of the bearing shaft located inside the square shell is provided with a push plate. A buckle plate is arranged below the bearing shaft. The top end of the buckle plate is located between the push plate and the second limiting ring of the bearing shaft, and the bottom end of the buckle plate is rotatably installed on the square shell.

[0014] As a preferred scheme of the anti-offset conveying mechanism of the spunlace non-woven fabric of the present invention, wherein: a kidney-shaped hole is arranged on one side of the square shell, and the bearing shaft and the spring are inserted through the kidney-shaped hole of the square shell.

[0015] As a preferred scheme of the anti-offset conveying mechanism of the spunlace non-woven fabric of the present invention, wherein: a rotating shaft is inserted through the bottom end of the buckle plate, and support plates are arranged at both ends of the rotating shaft. The rotating shaft is installed on the square shell through the support plates. Torsion springs are also sleeved on both sides of the buckle plate where the rotating shaft is located. One end of the torsion spring is connected to the buckle plate, and the other end of the torsion spring abuts against the square shell.

[0016] As a preferred scheme of the anti-offset conveying mechanism of the spunlace non-woven fabric of the present invention, wherein: two second sliders are symmetrically arranged on the top of the square shell, and the second sliders of the square shell are inserted through the bearing rod.

[0017] As a preferred scheme of the anti-offset conveying mechanism of the spunlace non-woven fabric of the present invention, wherein: a through hole matching with the bearing rod is arranged in the middle of the second slider, the bearing rod is inserted through the through hole of the second slider, and a limit bolt is also threadedly connected to one side of the second slider. The limit bolt penetrates through the second slider and extends into its through hole.

[0018] A working method of an anti-offset conveying mechanism of a spunlace non-woven fabric includes the following steps:

[0019] S1. Push the square shell along the bearing rod according to the width of the fabric to adjust the distance between the two anti-offset pressing belts. After the adjustment is completed, lock the second slider on the bearing rod by rotating the limit bolt to restrict the sliding of the square shell.

[0020] S2. When the fabric is conveyed on the conveyor table, control the screw slide table to start, so that the first slider of the screw slide table drives the bearing rod to move downward. The square shell and the anti-offset pressing belts move downward synchronously with the bearing rod until the anti-offset pressing belts contact the fabric, and the fabric is clamped between the anti-offset pressing belts and the conveyor belt to prevent the fabric from shifting.

[0021] S3. Control the first slider of the screw slide table to drive the bearing rod to continue moving downward. The square shell follows the bearing rod to continue moving downward, while the anti-offset pressing belts are placed on the conveyor belt and cannot move downward. The bearing shaft supporting the anti-offset pressing belts moves upward relative to the square shell and compresses the spring telescopic rod. The buckle plate below the bearing shaft is no longer pressed by the bearing shaft. Under the action of the torsion spring, the buckle plate rotates along the rotating shaft, and the top of the buckle plate no longer pushes against the push plate of the bearing shaft, so that the spring on the bearing shaft extends and pushes the bearing shaft to move outward. The sprocket on the bearing shaft and the anti-offset pressing belts move outward synchronously, and the fabric below the anti-offset pressing belts is tensioned and leveled.

[0022] S4. After the fabric conveying is completed, control the first slider of the screw slide table to drive the bearing rod to move upward. The square shell follows the bearing rod to move upward synchronously. The spring telescopic rod on the bearing shaft extends, so that the bearing shaft moves downward relative to the square shell. By pushing the buckle plate with the bearing shaft to make it rotate, during the rotation of the buckle plate, the top of the buckle plate will push the push plate of the bearing shaft to move, so that the bearing shaft moves inward and compresses the spring on the bearing shaft. The sprocket on the bearing shaft and the anti-offset pressing belts move inward synchronously.

[0023] S5. When the bearing shaft and the spring move to the bottom of the waist-shaped hole of the square shell, the bearing shaft, the sprocket on the bearing shaft and the anti-offset pressing belts move upward with the square shell until they return to the initial position and wait for the next action.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] The present invention is provided with an anti-offset component. The two anti-offset pressing belts of the anti-offset component push the fabric on the conveyor table, and the fabric is clamped between the anti-offset pressing belts and the conveyor belt to avoid fabric offset. Moreover, during the downward pressing process, the anti-offset pressing belts will also move outward, and the fabric below the anti-offset pressing belts is tensioned and leveled, which is beneficial to fabric conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a three-dimensional structure diagram of the anti-offset component of the present invention;

[0028] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at position A in the present invention;

[0029] Figure 4 Front view structure diagram of the anti-offset component of the present invention;

[0030] Figure 5 Schematic diagram of the internal structure of the square shell in the initial state of the present invention;

[0031] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at position B in the present invention;

[0032] Figure 7 Schematic diagram of the internal structure of the square shell in the working state of the present invention;

[0033] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at position C in the present invention;

[0034] Figure 9 Schematic diagram of the structure of the buckle plate of the present invention.

[0035] In the figure: 1. Conveyor table; 11. Frame; 12. Conveyor belt; 2. Anti-offset component; 21. Support member; 211. Lead screw slide; 212. First slider; 213. Carrier rod; 22. Pushing member; 221. Square shell; 2211. Waist-shaped hole; 2212. Second slider; 2213. Limit bolt; 222. Anti-offset pushing belt; 223. Carrier shaft; 2231. First limit ring; 2232. Second limit ring; 2233. Push plate; 224. Sprocket; 225. Nut; 226. Spring telescopic rod; 2261. Sleeve ring; 227. Spring; 228. Buckle plate; 229. Rotating shaft; 230. Support plate; 231. Torsion spring. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1-9 , an anti-offset conveying mechanism for spunlace non-woven fabric, including a conveyor table 1, including a frame 11 and a conveyor belt 12 rotatably arranged in the frame 11. Among them, the conveyor table 1 is a prior art and its structure will not be described in detail;

[0038] The anti-offset component 2 includes two support members 21 arranged on the bench 11 and two pressing members 22 symmetrically arranged on the support members 21. The support members 21 and the pressing members 22 intersect to form a square-shaped structure;

[0039] The support member 21 includes two screw rod slides 211, a first slider 212 slidably arranged on the screw rod slides 211, and a bearing rod 213. The bottom of the screw rod slide 211 is installed on the bench 11. The bearing rod 213 is arranged between the two screw rod slides 211, and both ends of the bearing rod 213 are respectively connected to the first sliders 212 of the two screw rod slides 211;

[0040] The pressing member 22 includes a square shell 221 and an anti-offset pressing belt 222 arranged on one side of the square shell 221. The square shell 221 is slidably arranged on the bearing rod 213 of the support member 21.

[0041] In this embodiment, the pressing member 22 further includes two bearing shafts 223 and two sprockets 224 symmetrically arranged at both ends of the square shell 221. The sprocket 224 is inserted through one end of the bearing shaft 223, and the anti-offset pressing belt 222 is sleeved on the sprocket 224;

[0042] Wherein, a first limiting ring 2231 is arranged on one side of the bearing shaft 223 where the sprocket 224 is located, and a nut 225 is threadedly connected to the other side of the bearing shaft 223 where the sprocket 224 is located;

[0043] It should be noted that the anti-offset pressing belt 222 is composed of a chain and pressing plates distributed on the chain. The sprocket 224 meshes with the chain of the anti-offset pressing belt 222. The middle of the sprocket 224 has a circular hole, and the inner diameter of the circular hole of the sprocket 224 matches the outer diameter of the bearing shaft 223, so that the sprocket 224 can rotate on the bearing shaft 223. One end of the bearing shaft 223 connected to the nut 225 is provided with a thread, and the nut 225 is connected to the bearing shaft 223 through threaded cooperation.

[0044] In this embodiment, one end of the bearing shaft 223 away from the sprocket 224 extends into the square shell 221. A spring telescopic rod 226 is arranged above the bearing shaft 223, and one end of the spring telescopic rod 226 is installed on the square shell 221, and the other end of the spring telescopic rod 226 is provided with a collar 2261;

[0045] The bearing shaft 223 is inserted through the collar 2261 of the spring telescopic rod 226. The first limiting ring 2231 on the bearing shaft 223 is located on one side of the collar 2261, and a second limiting ring 2232 is arranged on the other side of the bearing shaft 223 where the collar 2261 is located;

[0046] It should be noted that the first limiting ring 2231 and the second limiting ring 2232 are used for limiting to restrict the sliding distance of the bearing shaft 223 in the collar 2261.

[0047] In this embodiment, a spring 227 is further sleeved between the bearing shaft 223 and the first limiting ring 2231. A push plate 2233 is provided at one end of the bearing shaft 223 located inside the square shell 221. A clamping plate 228 is provided below the bearing shaft 223. The top end of the clamping plate 228 is located between the push plate 2233 of the bearing shaft 223 and the second limiting ring 2232. The bottom end of the clamping plate 228 is rotatably installed on the square shell 221.

[0048] Among them, a kidney-shaped hole 2211 is provided on one side of the square shell 221. The bearing shaft 223 and the spring 227 are inserted into the kidney-shaped hole 2211 of the square shell 221. The distance of the up-and-down sliding of the bearing shaft 223 and the spring 227 is restricted by the kidney-shaped hole 2211. Specifically, the width of the kidney-shaped hole 2211 is greater than the outer diameter of the spring 227, so that the spring 227 can pass through the kidney-shaped hole 2211.

[0049] It should be noted that the upper end of the clamping plate 228 is of an arc-shaped structure, so that when the bearing shaft 223 presses the clamping plate 228, the clamping plate 228 can rotate and push the push plate 2233 of the bearing shaft 223 to move.

[0050] In this embodiment, a rotating shaft 229 is inserted through the bottom end of the clamping plate 228, and support plates 230 are provided at both ends of the rotating shaft 229. The rotating shaft 229 is installed on the square shell 221 through the support plates 230. Torsion springs 231 are sleeved on both sides of the rotating shaft 229. One end of the torsion spring 231 is connected to the clamping plate 228, and the other end of the torsion spring 231 abuts against the square shell 221. When the bearing shaft 223 does not press the clamping plate 228, the clamping plate 228 can rotate under the action of the torsion spring 231 until the clamping plate 228 is in a vertical state.

[0051] In this embodiment, two second sliders 2212 are symmetrically provided at the top of the square shell 221, and the second sliders 2212 of the square shell 221 are inserted through the bearing rod 213.

[0052] Among them, a through hole matching the bearing rod 213 is provided in the middle of the second slider 2212. The bearing rod 213 is inserted into the through hole of the second slider 2212. A limit bolt 2213 is also threadedly connected to one side of the second slider 2212. The limit bolt 2213 penetrates through the second slider 2212 and extends into its through hole, so that the square shell 221 can slide along the bearing rod 213 through the second slider 2212, thereby adjusting the distance between the two square shells 221 and the anti-offset pushing belt 222 to adapt to fabrics of different widths.

[0053] The working method of the anti-offset conveying mechanism of the spunlace non-woven fabric of the present invention includes the following steps:

[0054] S1. Push the square shell 221 along the carrier rod 213 according to the width of the fabric to adjust the distance between the two anti-deviation pressing belts 222. After the adjustment is completed, lock the second slider 2212 on the carrier rod 213 by rotating the limit bolt 2213 to restrict the sliding of the square shell 221;

[0055] S2. When the fabric is conveyed on the conveying table 1, control the screw rod sliding table 211 to start, so that the first slider 212 of the screw rod sliding table 211 drives the carrier rod 213 to move downward. The square shell 221 and the anti-deviation pressing belts 222 move downward synchronously with the carrier rod 213 until the anti-deviation pressing belts 222 contact the fabric, and the fabric is clamped between the anti-deviation pressing belts 222 and the conveyor belt 12 to prevent the fabric from shifting;

[0056] S3. Control the first slider 212 of the screw rod sliding table 211 to drive the carrier rod 213 to continue moving downward. The square shell 221 follows the carrier rod 213 to continue moving downward, while the anti-deviation pressing belts 222 are placed on the conveyor belt 12 and cannot move downward. The carrier shaft 223 supporting the anti-deviation pressing belts 222 moves upward relative to the square shell 221 and compresses the spring telescopic rod 226. The buckle plate 228 below the carrier shaft 223 is no longer pressed by the carrier shaft 223. Under the action of the torsion spring 231, the buckle plate 228 rotates along the rotating shaft 229, and the top end of the buckle plate 228 no longer pushes the push plate 2233 of the carrier shaft 223, so that the spring 227 on the carrier shaft 223 extends and pushes the carrier shaft 223 to move outward. The sprocket 224 on the carrier shaft 223 and the anti-deviation pressing belts 222 move outward synchronously to tension and flatten the fabric below the anti-deviation pressing belts 222;

[0057] S4. After the fabric conveying is completed, control the first slider 212 of the screw rod sliding table 211 to drive the carrier rod 213 to move upward. The square shell 221 follows the carrier rod 213 to move upward synchronously. The spring telescopic rod 226 on the carrier shaft 223 extends, so that the carrier shaft 223 moves downward relative to the square shell 221. By pushing the buckle plate 228 with the carrier shaft 223 to make it rotate, during the rotation of the buckle plate 228, the top end of the buckle plate 228 will push the push plate 2233 of the carrier shaft 223 to move, so that the carrier shaft 223 moves inward and compresses the spring 227 on the carrier shaft 223. The sprocket 224 on the carrier shaft 223 and the anti-deviation pressing belts 222 move inward synchronously;

[0058] S5. When the carrier shaft 223 and the spring 227 move to the bottom of the waist-shaped hole 2211 of the square shell 221, the carrier shaft 223, the sprocket 224 on the carrier shaft 223 and the anti-deviation pressing belts 222 move upward with the square shell 221 until they return to the initial position and wait for the next action.

[0059] In summary, the anti-offset conveying mechanism of the spunlace non-woven fabric can clamp the fabric between the anti-offset pressing belt and the conveyor belt to avoid fabric offset. Moreover, during the downward pressing process, the anti-offset pressing belt will also move outward to tension and flatten the fabric under the anti-offset pressing belt, which is beneficial to fabric conveying.

[0060] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An anti-deviation conveying mechanism for spunlace nonwoven fabric, characterized in that: include, A conveyor platform (1) comprising a frame (11) and a conveyor belt (12) rotatably arranged inside the frame (11); An anti-deviating assembly (2) comprising two support members (21) arranged on the platform (11) and two push members (22) symmetrically arranged on the support members (21), wherein the support members (21) and the push members (22) intersect to form a square frame structure; The support member (21) comprises two screw slides (211), a first slider (212) slidably arranged on the screw slides (211), and a bearing rod (213); the bottom of the screw slide (211) is mounted on the stand (11); the bearing rod (213) is arranged between the two screw slides (211); and both ends of the bearing rod (213) are respectively connected to the first sliders (212) of the two screw slides (211); The pushing member (22) comprises a square shell (221) and an anti-deflection pushing belt (222) arranged on one side of the square shell (221); the square shell (221) is slidably arranged on the bearing rod (213) of the supporting member (21); The pushing member (22) further comprises two bearing shafts (223) and two sprockets (224) symmetrically arranged at two ends of the square shell (221); the sprocket (224) is inserted and arranged at one end of the bearing shaft (223); and the anti-bias pushing belt (222) is sleeved on the sprocket (224); A first limiting ring (2231) is provided on one side of the bearing shaft (223) located at the sprocket (224), and a nut (225) is threadedly connected to the other side of the bearing shaft (223) located at the sprocket (224); One end of the bearing shaft (223) away from the sprocket (224) extends to the inside of the square shell (221); a spring telescopic rod (226) is provided above the bearing shaft (223); one end of the spring telescopic rod (226) is mounted on the square shell (221); and a collar (2261) is provided at the other end of the spring telescopic rod (226); The bearing shaft (223) is inserted into the collar (2261) of the spring telescopic rod (226); a first limiting ring (2231) on the bearing shaft (223) is located on one side of the collar (2261); and a second limiting ring (2232) is provided on the other side of the bearing shaft (223) located on the collar (2261); The bearing shaft (223) is located between the sleeve ring (2261) and the first limiting ring (2231), and is also sleeved with a spring (227); one end of the bearing shaft (223) located in the square shell (221) is provided with a push plate (2233); a buckle plate (228) is provided below the bearing shaft (223); the top end of the buckle plate (228) is located between the push plate (2233) of the bearing shaft (223) and the second limiting ring (2232); the bottom end of the buckle plate (228) is rotatably mounted on the square shell (221); A waist-shaped hole (2211) is provided on one side of the square shell (221), and the bearing shaft (223) and the spring (227) are inserted into the waist-shaped hole (2211) of the square shell (221); A rotating shaft (229) is inserted through the bottom end of the buckle plate (228), and support plates (230) are provided at both ends of the rotating shaft (229). The rotating shaft (229) is installed on the square shell (221) through the support plates (230). The rotating shaft (229) is located on both sides of the buckle plate (228) and is also sleeved with torsion springs (231). One end of the torsion spring (231) is connected to the buckle plate (228), and the other end of the torsion spring (231) is against the square shell (221).

2. The anti-deviation conveying mechanism for spunlace nonwoven fabric according to claim 1, characterized in that: Two second sliding blocks (2212) are also symmetrically arranged on the top of the square shell (221), and the second sliding blocks (2212) of the square shell (221) are interspersed and arranged on the bearing rod (213).

3. The anti-deviation conveying mechanism for spunlace nonwoven fabric according to claim 2, characterized in that: A through hole matching the bearing rod (213) is provided in the middle of the second sliding block (2212), and the bearing rod (213) is inserted into the through hole of the second sliding block (2212). A limiting bolt (2213) is also threadedly connected to one side of the second sliding block (2212), and the limiting bolt (2213) passes through the second sliding block (2212) and extends into the through hole thereof.

4. The working method of the anti-deviation conveying mechanism of the spunlace nonwoven fabric according to claim 3, characterized in that: The following steps are involved: S1, pushing the square shell (221) to slide along the bearing rod (213) according to the width of the fabric, adjusting the spacing between the two anti-bias pushing belts (222), and after the adjustment is completed, locking the second slider (2212) on the bearing rod (213) by rotating the limit bolt (2213) to limit the sliding of the square shell (221); S2, when the cloth is being conveyed on the conveying platform (1), the screw slide (211) is controlled to start, so that the first slider (212) of the screw slide (211) drives the bearing rod (213) to move downward, and the square shell (221) and the anti-bias pushing belt (222) move downward synchronously with the bearing rod (213) until the anti-bias pushing belt (222) contacts the cloth, and the cloth is clamped between the anti-bias pushing belt (222) and the conveying belt (12) to prevent the cloth from deflecting; S3, the first slider (212) of the control screw slide (211) drives the bearing rod (213) to continue to move downward, the square shell (221) follows the bearing rod (213) to continue to move downward, and the anti-bias push belt (222) is placed on the conveyor belt (12) and cannot move downward, the bearing shaft (223) supporting the anti-bias push belt (222) moves upward relative to the square shell (221) and compresses the spring telescopic rod (226), and the buckle plate (228) below the bearing shaft (223) is no longer supported. The bearing shaft (223) is pressed, and the buckle plate (228) rotates along the rotating shaft (229) under the action of the torsion spring (231), and the top of the buckle plate (228) no longer pushes the push plate (2233) of the bearing shaft (223), so that the spring (227) on the bearing shaft (223) stretches and pushes the bearing shaft (223) to move outward, and the sprocket (224) and the anti-bias pushing belt (222) on the bearing shaft (223) move outward synchronously, so that the fabric below the anti-bias pushing belt (222) is tensioned and leveled; S4, after the fabric is conveyed, the first slider (212) of the control screw slide (211) drives the bearing rod (213) to move upward, the square shell (221) moves upward synchronously with the bearing rod (213), the spring telescopic rod (226) on the bearing shaft (223) stretches, so that the bearing shaft (223) moves downward relative to the square shell (221), and the buckle plate (228) is pushed by the bearing shaft (223) to rotate, and during the rotation of the buckle plate (228), the top end of the buckle plate (228) pushes the push plate (2233) of the bearing shaft (223) to move, so that the bearing shaft (223) moves inward and compresses the spring (227) on the bearing shaft (223), and the sprocket (224) and the anti-bias pushing belt (222) on the bearing shaft (223) move inward synchronously; S5. When the bearing shaft (223) and the spring (227) move to the bottom of the waist-shaped hole (2211) of the square shell (221), the bearing shaft (223) and the sprocket (224) and the anti-bias pushing belt (222) on the bearing shaft (223) move upward along with the square shell (221) until they return to the initial position and wait for the next action.

Images