Braid processing apparatus

Abstract

The application provides a weaving belt processing equipment, which comprises a first rail, a second rail, a shifting buckle mechanism, a first lower buckle passing mechanism, a first flat folding mechanism, a first upper buckle passing mechanism, a stretching mechanism, a top pressing wheel, a second lower buckle passing mechanism, a second flat folding mechanism and a second upper buckle passing mechanism. In the scheme, the workpiece can be transferred to different workstations for processing by driving the connecting buckle to slide between the first rail and the second rail through the shifting buckle mechanism. The first lower buckle passing mechanism, the first flat folding mechanism and the first upper buckle passing mechanism can be matched to realize the first two times of belt buckle passing of the connecting buckle. The stretching mechanism, the top pressing wheel, the second lower buckle passing mechanism, the second flat folding mechanism and the second upper buckle passing mechanism can be matched to realize the last two times of belt buckle passing of the connecting buckle. The scheme can replace the manual belt buckle passing work, has high automation degree and can improve the buckle passing efficiency.

Description

Technical Field

[0001] This application relates to the technical field of ribbon processing, and more particularly to a ribbon processing device. Background Technology

[0002] Some webbing needs to be threaded onto fasteners (such as a snap fastener with three through holes) for use. For example, webbing designed for various clothing or backpacks needs to be threaded onto fasteners. However, the traditional method of threading fasteners relies on manual operation, which is inefficient.

[0003] Therefore, it is necessary to provide a webbing processing device to improve the efficiency of fastening. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a webbing processing equipment to improve the efficiency of buckle insertion.

[0005] According to an embodiment of this utility model, the first embodiment is provided as follows: a webbing processing equipment, comprising: a first rail, a second rail parallel to and spaced apart from the first rail, a shifting buckle mechanism capable of driving a connecting buckle to slide from a first station to a second station between the first rail and the second rail, a first lower buckling mechanism for buckling the connecting buckle at the first station, a first flattening mechanism located above the second rail and pressing the webbing above the first station toward the first rail, a first upper buckling mechanism for buckling the connecting buckle at the first station, a stretching mechanism located on the side of the second rail away from the first rail and below the second station for pulling the webbing, a top pressure roller located below the second station and capable of pushing upward, a second lower buckling mechanism for buckling the connecting buckle at the second station, a second flattening mechanism located above the first rail and pressing the webbing above the second station toward the second rail, and a second upper buckling mechanism for buckling the connecting buckle at the second station.

[0006] In a preferred embodiment, the first rail is provided with a first limiting receiving groove on the side facing the second rail, and the second rail is provided with a second limiting receiving groove on the side facing the first rail. The first limiting receiving groove and the second limiting receiving groove are respectively used to receive one end of the connecting buckle.

[0007] In a preferred embodiment, the shifting mechanism includes a crossbeam, a push rod disposed on the crossbeam to push the connecting buckle to slide, a lifting cylinder to drive the push rod to rise and fall, and a translation cylinder to drive the crossbeam to translate.

[0008] In a preferred embodiment, a plurality of push rods are arranged at intervals along the extension direction of the crossbeam, and the lifting cylinder drives the crossbeam to lift and lower, thereby driving the push rods to lift and lower.

[0009] In a preferred embodiment, the first lower fastening mechanism includes a first lower fastening piece and a first cylinder for driving the first lower fastening piece to press upward; the first upper fastening mechanism includes a first upper fastening piece and a second cylinder for driving the first upper fastening piece to press downward; the second upper fastening mechanism includes a second upper fastening piece and a third cylinder for driving the second upper fastening piece to press downward; and the second lower fastening mechanism includes a second lower fastening piece and a fourth cylinder for driving the second lower fastening piece to press upward.

[0010] In a preferred embodiment, the connecting buckle is a shaped buckle, which divides the space between the first rail and the second rail into a first region, a second region, and a third region along the direction from the first rail to the second rail. The first lower through buckle and the second upper through buckle face the third region, the first upper through buckle faces the second region, and the second lower through buckle faces the first region.

[0011] In a preferred embodiment, the stretching mechanism includes a stretching member for pulling the webbing and a first conveying member for translating the stretching member, the stretching member including a pull rod rotatable about the lifting direction.

[0012] In a preferred embodiment, the webbing processing equipment further includes a webbing conveying mechanism located below the second rail, the webbing conveying mechanism being used to convey the webbing to the area below the first station, and the conveying direction of the webbing conveying mechanism being perpendicular to the extension direction of the first rail.

[0013] In a preferred embodiment, the shifting mechanism can also drive the connecting buckle to slide from the second station to the third station. The webbing processing equipment further includes a sliding mechanism, which includes a docking component and a second conveying component that drives the docking component to move horizontally. The docking component includes a third rail and a fourth rail. When the docking component moves horizontally to the third station, the third rail is aligned with the first rail and the fourth rail is aligned with the second rail so that the connecting buckle can slide in.

[0014] In a preferred embodiment, the webbing processing equipment further includes a pressing mechanism. When the docking member is located at the third station, the pressing mechanism is located on the side of the fourth rail away from the third rail. The pressing mechanism is used to press the webbing extending out of the fourth rail. When the pressing mechanism presses the webbing, the second conveyor drives the docking member away from the pressing mechanism to stretch the webbing to a predetermined length.

[0015] This utility model has the following beneficial effects:

[0016] In this application, the connecting buckle is slid between the first and second rails via a shifting mechanism, allowing the workpiece to be transferred to different workstations for processing. The first lower buckle-fastening mechanism, the first flattening mechanism, and the first upper buckle-fastening mechanism work together to perform the first two webbing fastenings of the connecting buckle. The subsequent two webbing fastenings of the connecting buckle are performed through the coordination of a stretching mechanism, a top pressure roller, a second lower buckle-fastening mechanism, a second flattening mechanism, and a second upper buckle-fastening mechanism. This solution can replace manual webbing fastening, offering a high degree of automation and improving fastening efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the first rail, the second rail, and the shifting mechanism according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the relevant structure at the first workstation according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the relevant structure at the first workstation from another perspective according to an embodiment of the present invention;

[0020] Figure 4 for Figure 3 Enlarged view of point a in the middle;

[0021] Figure 5 This is a schematic diagram of the relevant structure at the second workstation according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the relevant structure at the second workstation from another perspective according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the relevant structure at the third workstation according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the relevant structure at the third workstation from another perspective according to an embodiment of the present invention.

[0025] Reference numerals: 11, First rail; 111, First limiting receiving groove; 12, Second rail; 121, Second limiting receiving groove; 20, Shifting buckle mechanism; 201, Crossbeam; 202, Push rod; 203, Translation cylinder; 204, Lifting cylinder; 30, First lower buckle mechanism; 301, First lower buckle piece; 302, First cylinder; 40, First folding mechanism; 50, First upper buckle mechanism; 501, First upper buckle piece; 502, Second cylinder; 60, Tensioning mechanism; 601, Tensioning component ; 6011, Pull rod; 602, First conveyor; 70, Top pressure roller; 80, Second lower buckle mechanism; 801, Second lower buckle piece; 802, Third cylinder; 90, Second flat folding mechanism; 100, Second upper buckle mechanism; 1001, Second upper buckle piece; 1002, Fourth cylinder; 110, Sliding mechanism; 1101, Connecting part; 11011, Third rail; 11012, Fourth rail; 1102, Second conveyor; 120, Pressing mechanism; A, Webbing; B, Connecting buckle; Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0030] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0031] Please refer to Figures 1-6 This utility model provides a webbing processing device that can be used for the interlocking connection of webbing A and connecting buckle B. The webbing processing device includes: a first rail 11, a second rail 12, a buckle shifting mechanism 20, a first lower buckle insertion mechanism 30, a first flattening mechanism 40, a first upper buckle insertion mechanism 50, a stretching mechanism 60, a top pressure roller 70, a second lower buckle insertion mechanism 80, a second flattening mechanism 90, and a second upper buckle insertion mechanism 100.

[0032] The second rail 12 is parallel to and spaced apart from the first rail 11, and a connecting buckle B can be placed between the first rail 11 and the second rail 12. In one embodiment, the first rail 11 can be a one-piece structure, that is, the first rail 11 is a long and uninterrupted rail. In another embodiment, the first rail 11 can also be a segmented structure, that is, the first rail 11 can be formed by splicing together multiple independent rails, or by arranging multiple independent rails with slight intervals. To facilitate the assembly and maintenance of the webbing processing equipment, the first rail 11 is preferably a segmented structure. Similarly, the second rail 12 can be a one-piece structure or a segmented structure, and to facilitate the assembly and maintenance of the webbing processing equipment, the second rail 12 is preferably a segmented structure.

[0033] The shifting mechanism 20 is used to drive the connecting buckle B to slide between the first rail 11 and the second rail 12. In this embodiment, the shifting mechanism 20 can slide the connecting buckle B to the first station and can slide the connecting buckle B from the first station to the second station.

[0034] When connector B is in the first position, refer to Figure 2 and Figure 3The webbing A, located on the side of the second rail 12 opposite to the first rail 11, is transported to the bottom of the connecting buckle B in a direction perpendicular to the first rail 11 and the second rail 12. Then, the first downward buckling mechanism 30 presses up to pass the webbing A through the through hole on the right side of the connecting buckle B, thus achieving the first webbing buckle of the connecting buckle B. Then, the first flattening mechanism 40, located above the second rail 12, can be pushed to the left and press the webbing A, which is located above the first station after passing through the connecting buckle B, against the first rail 11. Then, the first upward buckling mechanism 50 presses down to pass the webbing A through the through hole in the middle of the connecting buckle B, thus achieving the second webbing buckle of the connecting buckle B.

[0035] After the connecting buckle B completes the second webbing insertion, the webbing A below the connecting buckle B, including the left and right sides, can slide to the second working position under the action of the shifting mechanism 20.

[0036] When connector B is in the second position, please refer to... Figure 5 and Figure 6 The stretching mechanism 60 is located on the side of the second rail 12 away from the first rail 11, and pulls the right webbing A to a preset length below the second station. The top pressure wheel 70 is located below the second station and can push upward to make the left webbing A tilt to the left. Then the second lower buckle mechanism 80 presses upward to allow the left webbing A to pass through the through hole on the left side of the connecting buckle B, so as to realize the third webbing buckle of the connecting buckle B. Then the second flattening mechanism 90 located above the first rail 11 can be pushed to the right and press the webbing A above the second station towards the second rail 12. Then the second upper buckle mechanism 100 presses downward to pass the webbing A through the through hole on the right side of the connecting buckle B, so as to realize the fourth webbing buckle of the connecting buckle B.

[0037] In this embodiment, the connecting buckle B is slid between the first rail 11 and the second rail 12 by the shifting mechanism 20, which can transfer the workpiece (empty connecting buckle B or connecting buckle B with webbing A inserted) to different workstations for processing. Through the cooperation of the first lower buckling mechanism 30, the first flattening mechanism 40, and the first upper buckling mechanism 50, the first two webbing insertions of the connecting buckle B can be achieved. Through the cooperation of the stretching mechanism 60, the top pressure roller 70, the second lower buckling mechanism 80, the second flattening mechanism 90, and the second upper buckling mechanism 100, the last two webbing insertions of the connecting buckle B can be achieved. This solution can replace manual buckling of the webbing A, has a high degree of automation, and can improve buckling efficiency.

[0038] In a preferred embodiment, reference may be made to Figure 3 and Figure 4The first rail 11 is provided with a first limiting receiving groove 111 on the side facing the second rail 12, and the second rail 12 is provided with a second limiting receiving groove 121 on the side facing the first rail 11. The first limiting receiving groove 111 and the second limiting receiving groove 121 are respectively used to receive one end of the connecting buckle B, so that the connecting buckle B can slide between the first rail 11 and the second rail 12 without derailing.

[0039] In a preferred embodiment, reference may be made to Figure 1 The shifting mechanism 20 includes a crossbeam 201, a push rod 202, a lifting cylinder 203, and a translation cylinder 203. The push rod 202 is mounted on the crossbeam 201 and extends between the first rail 11 and the second rail 12 to push the connecting buckle B to slide. The lifting cylinder 203 drives the push rod 202 to rise or fall, allowing it to extend between or disengage from the first rail 11 and the second rail 12. The translation cylinder 203 drives the crossbeam 201 to translate, thereby causing the push rod 202 to translate, thus achieving the translation of the connecting buckle B.

[0040] Preferably, multiple push rods 202 are arranged at intervals along the extension direction of the crossbeam 201, so that a single translation of the crossbeam 201 can drive the connecting buckles B at multiple workstations to slide, resulting in higher transportation efficiency. For example, the push rods 202 can be configured as follows: Figure 1 The four shown can be replaced with other numbers, and no further restrictions are imposed here. In this embodiment, since the shifting mechanism 20 is provided with multiple push rods 202, the lifting cylinder 204 can be configured to drive the crossbeam 201 to lift and lower, thereby driving the multiple push rods 202 to lift and lower synchronously.

[0041] In one specific embodiment, the first lower fastening mechanism 30 includes a first lower fastening piece 301 and a first cylinder 302 for driving the first lower fastening piece 301 to press upward; the first upper fastening mechanism 50 includes a first upper fastening piece 501 and a second cylinder 502 for driving the first upper fastening piece 501 to press downward; the second upper fastening mechanism 100 includes a second upper fastening piece 1001 and a third cylinder 802 for driving the second upper fastening piece 1001 to press downward; and the second lower fastening mechanism 80 includes a second lower fastening piece 801 and a fourth cylinder 1002 for driving the second lower fastening piece 801 to press upward.

[0042] Among them, the connecting buckle B is a shaped buckle, which includes three through holes: left, middle and right. Along the direction from the first rail 11 to the second rail 12, the space between the first rail 11 and the second rail 12 is divided into a first region, a second region and a third region (not shown in the figure). The first lower through buckle piece 301 and the second upper through buckle piece 1001 are directly opposite the third region and are used for webbing through the right through hole. The first upper through buckle piece 501 is directly opposite the second region and is used for webbing through the middle through hole. The second lower through buckle piece 801 is directly opposite the first region and is used for webbing through the left through hole.

[0043] In a preferred embodiment, reference may be made to Figure 5 and Figure 6 The stretching mechanism 60 includes a stretching member 601 and a first conveying member 602. The stretching member 601 includes a pull rod 6011, which is used to pull the webbing A on the right side below the second station to a preset length. The first conveying member 602 is used to drive the stretching member 601 to move horizontally. The first conveying member 602 can be a synchronous belt driven by a motor or some other conveying workpiece.

[0044] To facilitate the insertion and disengagement of the pull rod 6011 into and from the webbing A, the pull rod 6011 can be configured to rotate around the lifting direction. When the stretching member 601 extends to the front, it can be rotated to insert into the webbing A on the right side below the second station. At this time, the first conveying member 602 can drive the pull rod 6011 to retract, thereby stretching the webbing A. When the webbing A is stretched to a preset length, the pull rod 6011 can be rotated to disengage from the webbing A, so that the connecting buckle B on the second station can be sent to the next station together with the webbing A on it.

[0045] Understandably, in the conveying step of sending webbing A to the bottom of the connecting buckle B at the first station, the conveying can be done manually or by a dedicated conveying mechanism.

[0046] In a preferred embodiment, to improve the automation and processing efficiency of webbing A, the webbing processing equipment further includes a dedicated webbing conveyor mechanism for conveying webbing A. The webbing conveyor mechanism is located below the second rail 12 and is used to transport webbing A below the first workstation. The conveying direction of the webbing conveyor mechanism is perpendicular to the extension direction of the first rail 11. The webbing conveyor mechanism can use a synchronous belt or other conveying structures.

[0047] In one specific embodiment, refer to Figure 2 and Figure 3 The first flattening mechanism 40 includes a first flattening piece (not shown in the figure). The first flattening piece includes a flattening portion extending along the length of the first rail. The first flattening piece is driven to move to the left by a cylinder or other driving source so that the flattening portion flattens the webbing A above the connecting buckle B, so that the webbing A above the connecting buckle B can cover the through hole in the middle of the connecting buckle B, so that the first upper buckle mechanism 50 can press down and pass the webbing A above the connecting buckle B through the through hole in the middle of the connecting buckle B.

[0048] In one specific embodiment, refer to Figure 5 and Figure 6The second flattening mechanism 90 includes a second flattening piece (not shown in the figure). The second flattening piece includes a flattening portion extending along the length of the first rail. The first flattening piece is driven to translate to the right by a cylinder or other driving source so that the flattening portion flattens the webbing A above the connecting buckle B, so that the webbing A above the connecting buckle B can cover the through holes in the middle and right side of the connecting buckle B, so that the second upper buckle mechanism 100 can press down and pass the webbing A above the connecting buckle B through the through hole on the right side of the connecting buckle B.

[0049] In a preferred embodiment, the shifting mechanism 20 can also drive the connecting buckle B to slide from the second station to the third station. The webbing processing equipment also includes a sliding mechanism 110, which includes a docking member 1101 and a second conveying member 1102. The docking member 1101 is used to receive the connecting buckle B after the webbing has been threaded, and the second conveying member 1102 is used to drive the docking member 1101 to translate, thereby realizing the transfer of the workpiece. The second conveying member 1102 can be a synchronous belt driven by a motor or some other workpiece conveying mechanism. Specifically, the docking member 1101 includes a third rail 11011 and a fourth rail 11012. When the docking member 1101 translates to the third station, the third rail 11011 is aligned with the first rail 11, and the fourth rail 11012 is aligned with the second rail 12, so that the connecting buckle B can slide in.

[0050] Preferably, the webbing processing equipment further includes a pressing mechanism 120, which can be referred to as follows: Figure 7 When the docking part 1101 is in the third station, the clamping mechanism 120 is located on the side of the fourth rail 11012 opposite to the third rail 11011. The bottom of the fourth rail 11012 has clearance space. When the connecting buckle B is in the third station, this can be referred to... Figure 7 A large portion of the webbing A hangs down to the bottom, while another portion extends to the right to clear space and cross the fourth rail 11012. The clamping mechanism 120 is used to clamp the webbing A extending from the fourth rail 11012. When the clamping mechanism 120 clamps the webbing A, the second conveyor 1102 can drive the docking member 1101 away from the clamping mechanism 120. Figure 8 The position shown indicates that the right-side webbing A is stretched to a predetermined length.

[0051] In this embodiment, the sliding mechanism 110 and the pressing mechanism 120 cooperate to allow the webbing A to unfold laterally, so as to facilitate the clamping and picking up of the material by the subsequent multiple clamping arms. At the same time, the webbing A can also be stretched to a fixed length, thereby ensuring the consistency of the product position and enabling the subsequent folding and sewing processes of the webbing A to proceed stably.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ribbon processing equipment, characterized in that, include: A first rail, a second rail parallel to and spaced apart from the first rail, a shifting mechanism for moving the connecting buckle between the first rail and the second rail from the first station to the second station, a first lower buckling mechanism for threading the webbing through the connecting buckle at the first station, a first flattening mechanism located above the second rail and pressing the webbing above the first station toward the first rail, a first upper buckling mechanism for threading the webbing through the connecting buckle at the first station, a stretching mechanism located on the side of the second rail away from the first rail and below the second station that pulls the webbing, a top pressure roller located below the second station that can push upwards, a second lower buckling mechanism for threading the webbing through the connecting buckle at the second station, a second flattening mechanism located above the first rail and pressing the webbing above the second station toward the second rail, and a second upper buckling mechanism for threading the webbing through the connecting buckle at the second station.

2. The webbing processing apparatus according to claim 1, wherein The first rail has a first limiting receiving groove on the side facing the second rail, and the second rail has a second limiting receiving groove on the side facing the first rail. The first limiting receiving groove and the second limiting receiving groove are respectively used to receive one end of the connecting buckle.

3. The webbing processing apparatus according to claim 1, wherein The shifting mechanism includes a crossbeam, a push rod disposed on the crossbeam to push the connecting buckle to slide, a lifting cylinder to drive the push rod to rise and fall, and a translation cylinder to drive the crossbeam to translate.

4. The webbing processing apparatus according to claim 3, wherein The push rods are arranged at intervals along the extension direction of the crossbeam, and the lifting cylinder drives the crossbeam to lift and lower, thereby driving the push rods to lift and lower.

5. The webbing processing apparatus according to claim 1, wherein The first lower fastening mechanism includes a first lower fastening piece and a first cylinder for driving the first lower fastening piece to press upwards; the first upper fastening mechanism includes a first upper fastening piece and a second cylinder for driving the first upper fastening piece to press downwards; the second upper fastening mechanism includes a second upper fastening piece and a third cylinder for driving the second upper fastening piece to press downwards; and the second lower fastening mechanism includes a second lower fastening piece and a fourth cylinder for driving the second lower fastening piece to press upwards.

6. The webbing processing apparatus according to claim 5, wherein The connecting buckle is a shaped buckle. Along the direction from the first rail to the second rail, the space between the first rail and the second rail is divided into a first region, a second region, and a third region. The first lower through buckle and the second upper through buckle are directly opposite the third region, the first upper through buckle is directly opposite the second region, and the second lower through buckle is directly opposite the first region.

7. The webbing processing apparatus according to claim 1, wherein The stretching mechanism includes a stretching member for pulling the webbing and a first conveying member for driving the stretching member to translate. The stretching member includes a pull rod that can rotate about the lifting direction.

8. The webbing processing apparatus according to claim 1, wherein The webbing processing equipment also includes a webbing conveying mechanism located below the second rail. The webbing conveying mechanism is used to send the webbing to the area below the first station, and the conveying direction of the webbing conveying mechanism is perpendicular to the extension direction of the first rail.

9. The webbing processing apparatus according to claim 1, wherein The shifting mechanism can also drive the connecting buckle to slide from the second station to the third station. The webbing processing equipment also includes a sliding mechanism, which includes a docking component and a second conveying component that drives the docking component to move horizontally. The docking component includes a third rail and a fourth rail. When the docking component moves horizontally to the third station, the third rail is aligned with the first rail and the fourth rail is aligned with the second rail so that the connecting buckle can slide in.

10. The webbing processing apparatus according to claim 9, wherein The webbing processing equipment also includes a pressing mechanism. When the docking member is located at the third station, the pressing mechanism is located on the side of the fourth rail away from the third rail. The pressing mechanism is used to press the webbing extending out of the fourth rail. When the pressing mechanism presses the webbing, the second conveyor drives the docking member away from the pressing mechanism to stretch the webbing to a predetermined length.

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