Automatic induction shutdown device for braid

Abstract

The utility model discloses an automatic induction stop device for braid, which relates to the technical field of automatic stop for braid conveying, and comprises two fixing blocks which are symmetrically distributed left and right, a fixing shaft is fixedly connected between the close side surfaces of the two fixing blocks, and a rotating roller is rotatably connected on the peripheral surface of the fixing shaft. The two fixing blocks are connected with a first sensing assembly used for sensing conveying abnormity of the braid. Through the arrangement of the first induction assembly, when the braid bypasses the rotating roller and is conveyed, the normally conveyed braid can separate the laser transmitter from the laser receiver, so that laser emitted by the laser transmitter cannot be received by the laser receiver, and at the moment, an alarm signal is sent out immediately and the machine is stopped quickly to stop conveying of the braid; and a worker waits to check the braid conveying condition to determine a processing mode, so that the abnormal braid conveying condition can be found in time, and loss increase caused by condition deterioration is avoided.

Description

Technical Field

[0001] This utility model relates to the field of automatic stop technology for webbing conveyors, and in particular to an automatic sensing stop device for webbing. Background Technology

[0002] Ribbon is a narrow or tubular fabric made of various yarns, widely used in clothing, footwear, bags, industry, agriculture, military supplies and transportation. The raw materials for ribbon include cotton yarn, linen yarn, nylon, vinylon, polyester, polypropylene, spandex and viscose.

[0003] Webbing is a narrow or tubular fabric made from various yarns. It has a wide range of uses, including clothing decoration, tailoring and finishing, shoe straps and handles, bag straps and handles, and home decoration such as curtains, sofa covers and cushions. In addition, webbing is also used in industrial safety belts, lifting slings and packaging straps. During the production process, webbing is conveyed forward by multiple sets of conveyor rollers working together, which allows each part of the webbing to be processed accordingly, ensuring that the quality of the produced webbing is reliable and stable.

[0004] When conveying webbing via conveyor rollers, the rotational speeds of multiple sets of conveyor rollers are difficult to adjust to be absolutely identical. As a result, the webbing is prone to becoming loose or overly taut during the conveying process, which may lead to folding or breakage of the webbing. Once these phenomena occur, they will seriously affect the webbing production process. Since the webbing needs to be conveyed through multiple processes during processing, the conveying route is long and complex. When local webbing folds or breaks, it is often difficult for workers to quickly detect the problem and shut down the conveying mechanism to deal with it, thus increasing losses.

[0005] To solve the above problems, there is an urgent need for an automatic sensing and stopping device for webbing. Utility Model Content

[0006] The purpose of this utility model is to provide an automatic sensing and stopping device for webbing, in order to solve the problem mentioned in the background art that existing webbing is prone to folding or breaking during processing and conveying. Furthermore, due to the long and complex conveying lines, when local webbing folds or breaks, it is often difficult for workers to quickly detect the problem and shut down the conveying mechanism to deal with it, which leads to increased losses.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic sensing and stopping device for webbing, comprising two fixed blocks symmetrically distributed on the left and right, a fixed shaft fixedly connected between the adjacent sides of the two fixed blocks, a rotating roller rotatably connected to the outer circumferential surface of the fixed shaft, and a first sensing component for sensing abnormalities in webbing conveying connected to the two fixed blocks.

[0008] The first sensing component includes a laser emitter connected to a fixed block, and the first sensing component also includes a laser receiver connected to the fixed block, with the laser emitter located below and aligned with the laser receiver.

[0009] Preferably, the first sensing component further includes two rings symmetrically fixedly connected to the adjacent sides of the two fixed blocks, with a fixing shaft passing through the inner holes of the two rings. The laser emitter consists of two sets of laser emitters symmetrically fixedly connected to the outer circumference of the two rings. The first sensing component also includes two support rods symmetrically fixedly connected to the sides of the two fixed blocks, with a top plate fixedly connected between the top ends of the two support rods. Two connecting plates are symmetrically fixedly connected to the bottom of the two top plates. The laser receiver consists of two sets of laser receivers symmetrically distributed to the left and right, with the two sets of laser receivers symmetrically fixedly connected to the bottom surfaces of the two connecting plates. The two sets of laser receivers are respectively aligned with the two sets of laser emitters. The advantage of this arrangement is that when the webbing wraps around... When the rollers are rotating and being conveyed, the normally conveyed webbing will separate the two sets of laser emitters and the two sets of laser receivers. This prevents the laser emitted by the laser emitters from being received by the laser receivers. When both sets of laser receivers receive the laser simultaneously, it indicates that the webbing is likely to break. At this time, an alarm signal is immediately issued and the machine is quickly stopped to halt the conveying. If only one set of laser receivers receives the laser, it indicates that the webbing may be folded during the conveying process. An alarm is issued in time to prompt the staff to check the webbing conveying situation and decide on the handling method. In this way, abnormal situations such as folding or breaking of the webbing during the conveying process can be accurately and flexibly detected, and corresponding alarm signals and shutdown actions can be issued. This allows for the timely detection of abnormal webbing conveying situations and prevents the situation from worsening and increasing losses.

[0010] Preferably, a second sensing component is also connected to the two fixed blocks. The second sensing component can be used to sense abnormalities in the conveying process of the webbing. The advantage of this setting is that it can work together with the first sensing component to more accurately and reliably sense abnormalities in the conveying process of the webbing and issue alarms and execute shutdown actions.

[0011] Preferably, the second sensing component includes two circular plates symmetrically fixedly connected to the adjacent sides of two fixed blocks. Two first annular grooves are symmetrically formed on the outer circumferential surfaces of the two circular plates. Two rotating rings are symmetrically rotatably connected to the inner sidewalls of the two first annular grooves. Two first torsion springs are symmetrically fixedly connected between the left and right sides of the rotating rings and the left and right inner sidewalls of the first annular grooves. Two circular rings are symmetrically fixedly sleeved on the outer circumferential surfaces of the two rotating rings. Two second annular grooves are symmetrically formed on the outer circumferential surfaces of the two rotating rings. Two sets of laser emitters are symmetrically fixedly connected to the inner sidewalls of the two second annular grooves. Multiple laser emitters in each set are arranged in annular equiangular distributions, and multiple laser receivers in each set are arranged in arc-shaped equiangular distributions. The second sensing component also includes two first rotating shafts symmetrically fixedly connected to the opposite sides of the two circular rings. Two touch rods are symmetrically fixedly sleeved on the opposite ends of the two first rotating shafts. Two second torsion springs are symmetrically fixedly connected between the adjacent sides of the two touch rods and the opposite sides of the two circular rings. Two first limit switches are symmetrically connected to the sides of the two circular plates. Two second limit switches are symmetrically fixedly connected to the upper part. The two first limit switches and the two second limit switches are arranged in an arc shape. The touch rod rotates around the fixed axis to trigger the first limit switches and the second limit switches in sequence. The advantage of this arrangement is that when the webbing passes over the rotating roller, it also passes over the outer circumference of the two rings. This causes friction between the webbing and the outer circumference of the rings during conveying, which overcomes the elastic force of the first torsion spring and drives the rings and rotating ring to rotate. At this time, the rotating ring will drive the touch rod to rotate towards the first limit switch until the first limit switch is triggered. If at this time... When the webbing folds, it will separate from one of the loops. At this time, the loop is no longer under force and rotates back to its original position under the elastic force of the first torsion spring, causing the touch rod to separate from the first limit switch. Meanwhile, since the webbing has folded to the other loop, the frictional force on that loop will increase, causing the loop to rotate at an increased angle and pass the first limit switch, triggering the second limit switch. In this way, the second sensing component will issue an alarm indicating that the webbing may have folded. If both touch rods separate from both first limit switches at the same time, an alarm will be issued indicating that the webbing may have broken.

[0012] Preferably, the second sensing component further includes two second rotating shafts symmetrically rotatably connected to the two circular plates on their opposite sides. Two rotating arms are symmetrically fixedly sleeved on the opposite ends of the two second rotating shafts. A third torsion spring is fixedly connected between the rotating arms and the adjacent sides of the circular plates. Two first limit switches are symmetrically fixedly connected to the front of the two rotating arms. The second sensing component also includes two limiting rods symmetrically fixedly connected to the two circular plates on their opposite sides. When the two rotating arms rotate, they can respectively touch the two limiting rods. The advantage of this arrangement is that the rotating arms can drive the first limit switches to rotate at a certain angle, so that when the webbing becomes loose or tight to a certain extent during the conveying process, the friction between the webbing and the outer circumference of the ring will decrease or increase within a certain range. This ensures that the touch rod can always trigger the first limit switch within the normal fluctuation range, improving the reliability and practicality of the sensing stop device.

[0013] Preferably, the second sensing component further includes two sets of guide rollers symmetrically rotatably connected between the left and right inner walls of the two second annular grooves via a damping axis. Each set of multiple guide rollers is arranged in a ring. The advantage of this arrangement is that it reduces the local friction force on the webbing, avoids damage to the webbing caused by the ring, and improves the safety and reliability of the device.

[0014] In summary, the technical effects and advantages of this utility model are as follows:

[0015] 1. In this utility model, by setting a first sensing component, when the webbing passes around the rotating roller and is conveyed, the normally conveyed webbing will separate the laser emitter and the laser receiver. This makes the laser emitted by the laser emitter unable to be received by the laser receiver. At this time, an alarm signal is immediately issued and the machine is quickly stopped to pause the conveying of the webbing, waiting for the staff to check the conveying situation of the webbing to decide on the handling method. In this way, abnormal conveying of the webbing can be detected in time, and the situation can be prevented from deteriorating and causing greater losses.

[0016] 2. In this utility model, the second sensing component ensures that when the webbing passes over the rotating roller, it also passes over the outer circumference of the two rings. This causes friction between the webbing and the outer circumference of the rings during transport, overcoming the elastic force of the first torsion spring and causing the rings and rotating ring to rotate. At this time, the rotating ring drives the touch rod to rotate towards the first limit switch until the first limit switch is triggered. If the webbing folds at this time, it will separate from one of the rings. The ring will then rotate in the opposite direction and reset under the elastic force of the first torsion spring, causing the touch rod to separate from the first limit switch. Meanwhile, since the webbing folds to the other ring, the friction received by the ring will increase, causing the ring to rotate at an increased angle and pass the first limit switch, triggering the second limit switch. The second sensing component will then issue an alarm indicating that the webbing may have folded. If both touch rods separate from both first limit switches at the same time, an alarm will be issued indicating that the webbing may have broken. This allows the second sensing component to work together with the first sensing component to more accurately and reliably detect abnormalities in the webbing transport. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the second structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the first partial structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the circular plate in this utility model;

[0022] Figure 5 In this utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 6 In this utility model Figure 3 Enlarged diagram of point B in the middle.

[0024] In the diagram: 1. Fixed block; 2. Rotating roller; 3. First sensing component; 31. Laser emitter; 32. Laser receiver; 33. Circular ring; 34. Support rod; 35. Top plate; 36. Connecting plate; 4. Second sensing component; 41. Circular plate; 42. First annular groove; 43. Rotating ring; 44. First torsion spring; 45. Second annular groove; 46. Guide roller; 47. First rotating shaft; 48. Contact rod; 49. Second torsion spring; 410. First limit switch; 411. Second limit switch; 412. Second rotating shaft; 413. Rotating arm; 414. Limiting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please refer to Figures 1-6 The automatic sensing and stopping device for webbing shown includes two fixed blocks 1 symmetrically distributed on the left and right. A fixed shaft is fixedly connected between the sides of the two fixed blocks 1 that are close to each other. A rotating roller 2 is rotatably connected to the outer circumference of the fixed shaft. A first sensing component 3 for sensing abnormalities in webbing conveying is connected to the two fixed blocks 1.

[0027] The first sensing component 3 includes a laser emitter 31 connected to the fixed block 1, and the first sensing component 3 also includes a laser receiver 32 connected to the fixed block 1. The laser emitter 31 is located below the laser receiver 32 and is aligned with it.

[0028] refer to Figure 1 and Figure 2 The first sensing component 3 also includes two rings 33 symmetrically fixedly connected to the sides of the two fixed blocks 1, with a fixed shaft passing through the inner holes of the two rings 33. The laser emitter 31 consists of two sets of laser emitters 31 symmetrically connected to the outer circumference of the two rings 33. The first sensing component 3 also includes two support rods 34 symmetrically fixedly connected to the sides of the two fixed blocks 1. A top plate 35 is fixedly connected between the top ends of the two support rods 34. Two connecting plates 36 are symmetrically fixedly connected to the bottom of the two top plates 35. The laser receiver 32 consists of two sets of laser receivers 32 symmetrically distributed to the left and right. The two sets of laser receivers 32 are symmetrically fixedly connected to the bottom surfaces of the two connecting plates 36. The two sets of laser receivers 32 are respectively aligned with the two sets of laser emitters 31.

[0029] Specifically, when the webbing passes around the rotating roller 2 and is conveyed, the normally conveyed webbing will separate the two sets of laser emitters 31 and the two sets of laser receivers 32. This prevents the laser emitted by the laser emitter 31 from being received by the laser receiver 32. When both sets of laser receivers 32 receive the laser at the same time, it indicates that the webbing is likely to break. At this time, an alarm signal is immediately issued and the machine is quickly stopped to suspend the known conveying. If only one set of laser receivers 32 receives the laser, it indicates that the webbing may be folded during the conveying process. An alarm is issued in time to prompt the staff to check the webbing conveying situation to decide on the handling method. In this way, abnormal situations such as folding or breaking of the webbing during the conveying process can be accurately and flexibly detected, and corresponding alarm signals and stop actions can be issued. This allows for timely detection of abnormal webbing conveying situations and avoids the situation from deteriorating and causing greater losses.

[0030] refer to Figures 1-4 The two fixed blocks 1 are also connected to a second sensing component 4, which can be used to sense abnormal conditions of the webbing during the conveying process.

[0031] Specifically, it can work in conjunction with the first sensing component 3 to more accurately and reliably detect abnormalities in the webbing conveyor process and issue alarms and execute shutdown actions.

[0032] refer to Figures 2-6 The second sensing component 4 includes two circular plates 41 symmetrically fixedly connected to the adjacent sides of two fixed blocks 1. Two first annular grooves 42 are symmetrically formed on the outer circumferential surfaces of the two circular plates 41. Two rotating rings 43 are symmetrically rotatably connected to the inner sidewalls of the two first annular grooves 42. Two first torsion springs 44 are symmetrically fixedly connected between the left and right sides of the rotating rings 43 and the left and right inner sidewalls of the first annular grooves 42. Two circular rings 33 are symmetrically fixedly sleeved on the outer circumferential surfaces of the two rotating rings 43. Two second annular grooves 45 are symmetrically formed on the outer circumferential surfaces of the two rotating rings 43. Two sets of laser emitters 31 are symmetrically fixedly connected to the inner sidewalls of the two second annular grooves 45. Each set of multiple laser emitters 31 is arranged in a ring at equal angles, and each set of multiple laser receivers 32 is arranged in an arc. The second sensing component 4, which is symmetrically and angularly distributed, also includes two first rotating shafts 47 symmetrically and fixedly connected to the opposite sides of the two circular rings 33. Two touch rods 48 are symmetrically and fixedly sleeved on the opposite ends of the two first rotating shafts 47. Two second torsion springs 49 are symmetrically and fixedly connected between the adjacent sides of the two touch rods 48 and the opposite sides of the two circular rings 33. Two first limit switches 410 are symmetrically connected to the opposite sides of the two circular plates 41. Two second limit switches 411 are symmetrically and fixedly connected to the opposite sides of the two circular plates 41. The two first limit switches 410 and the two second limit switches 411 are arranged in an arc shape. The touch rods 48 can rotate around the fixed shaft to trigger the first limit switches 410 and the second limit switches 411 in sequence.

[0033] Specifically, as the webbing passes over the rotating roller 2, it also passes over the outer circumference of the two rings 33. This causes friction between the webbing and the outer circumference of the rings 33 during transport, overcoming the elastic force of the first torsion spring 44 and causing the rings 33 and the rotating ring 43 to rotate. At this time, the rotating ring 43 drives the contact rod 48 to rotate towards the first limit switch 410 until the first limit switch 410 is triggered. If the webbing folds at this time, it will separate from one of the rings 33. At this point, that ring 33 is no longer under force and is controlled by the first torsion spring 44. Under the action of elastic force, the reverse rotation resets the contact rod 48, causing it to separate from the first limit switch 410. At the same time, since the webbing is folded to another ring 33, the friction force received by the ring 33 will increase, thereby increasing the rotation angle of the ring 33 and passing the first limit switch 410 and triggering the second limit switch 411. Thus, the second sensing component 4 will issue an alarm indicating that the webbing may be folded. If both contact rods 48 are separated from both first limit switches 410 at the same time, an alarm will be issued indicating that the webbing may be broken.

[0034] refer to Figure 5 and Figure 6 The second sensing component 4 also includes two second rotating shafts 412 symmetrically rotatably connected to the opposite sides of the two circular plates 41. Two rotating arms 413 are symmetrically fixedly sleeved on the opposite ends of the two second rotating shafts 412. A third torsion spring is fixedly connected between the rotating arms 413 and the adjacent sides of the circular plates 41. Two first limit switches 410 are symmetrically fixedly connected to the front of the two rotating arms 413. The second sensing component 4 also includes two limiting rods 414 symmetrically fixedly connected to the opposite sides of the two circular plates 41. When the two rotating arms 413 rotate, they can respectively touch the two limiting rods 414.

[0035] Specifically, the rotating arm 413 can drive the first limit switch 410 to rotate at a certain angle, so that when the webbing is loosened or tightened to a certain extent during the conveying process, the friction between the webbing and the outer circumference of the ring 33 will decrease or increase within a certain range. This allows the touch rod 48 to always trigger the first limit switch 410 within the normal fluctuation range, improving the reliability and practicality of the inductive stop device.

[0036] refer to Figure 1 and Figure 2 The second sensing component 4 also includes two sets of guide rollers 46 that are symmetrically rotatably connected between the left and right inner walls of the two second annular grooves 45 via a damping axis, with each set of multiple guide rollers 46 arranged in a ring.

[0037] Specifically, this reduces the frictional force on the webbing, preventing the ring 33 from damaging the webbing and improving the safety and reliability of the device.

[0038] Working principle: The webbing is wrapped around the outer circumference of the rotating roller 2 and the outer circumference of the two sets of guide rollers 46, and then the conveying mechanism is started to transport the webbing.

[0039] When the webbing passes over the roller 2 and is conveyed, the normally conveyed webbing will separate the two sets of laser emitters 31 and the two sets of laser receivers 32. This prevents the laser emitted by the laser emitter 31 from being received by the laser receiver 32. When both sets of laser receivers 32 receive the laser at the same time, it indicates that the webbing is likely to break. At this time, an alarm signal is immediately issued and the machine is quickly stopped to suspend the known conveying. If only one set of laser receivers 32 receives the laser, it indicates that the webbing may be folded during the conveying process. An alarm is issued in time to prompt the staff to check the webbing conveying situation and decide on the handling method. In this way, abnormal situations such as folding or breaking of the webbing during the conveying process can be accurately and flexibly detected, and corresponding alarm signals and stop actions can be issued. This allows for timely detection of abnormal webbing conveying situations and avoids the situation from deteriorating and causing greater losses.

[0040] As the webbing wraps around the roller 2, it also wraps around the outer circumference of the two rings 33. This causes friction between the webbing and the outer circumference of the rings 33 during transport, overcoming the elastic force of the first torsion spring 44 and causing the rings 33 and the rotating ring 43 to rotate. At this time, the rotating ring 43 drives the contact rod 48 to rotate towards the first limit switch 410 until the first limit switch 410 is triggered. If the webbing folds at this time, it will separate from one of the rings 33. In this case, the ring 33 is no longer under force and is instead under the elastic force of the first torsion spring 44. The reverse rotation resets the contact rod 48, causing it to separate from the first limit switch 410. At the same time, since the webbing is folded to another ring 33, the friction force received by the ring 33 will increase, causing the ring 33 to rotate at an increased angle and pass the first limit switch 410, triggering the second limit switch 411. Thus, the second sensing component 4 will issue an alarm indicating that the webbing may be folded. If both contact rods 48 are separated from both first limit switches 410 at the same time, an alarm will be issued indicating that the webbing may be broken.

[0041] Meanwhile, staff can more accurately judge abnormalities in the conveyor belt based on the alarm signals emitted by the first sensing component 3 and the second sensing component 4.

[0042] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic sensing and stopping device for webbing, comprising two fixed blocks (1) symmetrically distributed on the left and right sides, characterized in that: A fixed shaft is fixedly connected between the adjacent sides of the two fixed blocks (1), and a rotating roller (2) is rotatably connected to the outer circumferential surface of the fixed shaft. A first sensing component (3) for sensing abnormalities in the conveying of the webbing is connected to the two fixed blocks (1). The first sensing component (3) includes a laser emitter (31) connected to the fixed block (1) and a laser receiver (32) connected to the fixed block (1). The laser emitter (31) is located below and aligned with the laser receiver (32).

2. The automatic sensing stop device for webbing according to claim 1, characterized in that: The first sensing component (3) further includes two circular rings (33) symmetrically fixedly connected to the two fixed blocks (1) on their adjacent sides. The fixing shaft passes through the inner hole of the two circular rings (33). The laser emitter (31) is composed of two sets of laser emitters (31) symmetrically connected to the outer circumference of the two circular rings (33). The first sensing component (3) further includes two support rods (34) symmetrically fixedly connected to the sides of the two fixed blocks (1). A top plate (35) is fixedly connected between the top ends of the two support rods (34). Two connecting plates (36) are symmetrically fixedly connected to the bottom of the two top plates (35). The laser receiver (32) is composed of two sets of laser receivers (32) symmetrically distributed to the left and right. The two sets of laser receivers (32) are symmetrically fixedly connected to the bottom surface of the two connecting plates (36). The two sets of laser receivers (32) are respectively aligned with the two sets of laser emitters (31).

3. The automatic sensing stop device for webbing according to claim 2, characterized in that: The two fixed blocks (1) are also connected to a second sensing component (4), which can be used to sense abnormalities in the conveying process of the webbing.

4. The automatic sensing stop device for webbing according to claim 3, characterized in that: The second sensing component (4) includes two circular plates (41) symmetrically fixedly connected to the adjacent sides of two fixed blocks (1). Two first annular grooves (42) are symmetrically opened on the outer circumferential surfaces of the two circular plates (41). Two rotating rings (43) are symmetrically rotatably connected to the inner sidewalls of the two first annular grooves (42). Two first torsion springs (44) are symmetrically fixedly connected between the left and right sides of the rotating rings (43) and the left and right inner sidewalls of the first annular grooves (42). Two circular rings (33) are symmetrically fixedly sleeved on the outer circumferential surfaces of the two rotating rings (43). Two second annular grooves (45) are symmetrically opened on the outer circumferential surfaces of the two rotating rings (43). Two sets of laser emitters (31) are symmetrically fixedly connected to the inner sidewalls of the two second annular grooves (45). Each set of multiple laser emitters (31) is distributed in an annular shape at equal angles. Each set of multiple laser receivers (32) The second sensing component (4) is arranged in an arc shape with equal angles. It also includes two first rotating shafts (47) symmetrically fixedly connected to the opposite sides of the two rings (33). Two touch rods (48) are symmetrically fixedly sleeved on the opposite ends of the two first rotating shafts (47). Two second torsion springs (49) are symmetrically fixedly connected between the adjacent sides of the two touch rods (48) and the opposite sides of the two rings (33). Two first limit switches (410) are symmetrically connected to the side of the two circular plates (41). Two second limit switches (411) are symmetrically fixedly connected to the side of the two circular plates (41). The two first limit switches (410) and the two second limit switches (411) are arranged in an arc shape. The touch rods (48) can trigger the first limit switches (410) and the second limit switches (411) in sequence by rotating around the fixed shaft.

5. The automatic sensing stop device for webbing according to claim 4, characterized in that: The second sensing component (4) further includes two second rotating shafts (412) symmetrically rotatably connected to the two circular plates (41) on opposite sides. Two rotating arms (413) are symmetrically fixedly sleeved on the opposite ends of the two second rotating shafts (412). A third torsion spring is fixedly connected between the rotating arms (413) and the adjacent sides of the circular plates (41). Two first limit switches (410) are symmetrically fixedly connected to the front of the two rotating arms (413). The second sensing component (4) further includes two limiting rods (414) symmetrically fixedly connected to the two circular plates (41) on opposite sides. When the two rotating arms (413) rotate, they can respectively touch the two limiting rods (414).

6. The automatic sensing stop device for webbing according to claim 5, characterized in that: The second sensing component (4) further includes two sets of guide rollers (46) that are symmetrically rotatably connected between the left and right inner walls of the two second annular grooves (45) via a damping axis, with each set of multiple guide rollers (46) arranged in an annular pattern.

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