Nonwoven fabric bag with fixed strap and processing equipment thereof

Abstract

This utility model relates to the field of nonwoven bag manufacturing, and discloses a nonwoven bag with fixing straps and its processing equipment. The nonwoven bag includes a bag body, and each bag body is provided with four fixing straps. One end of each fixing strap is fixed to the front, and the other end is fixed to the connecting surface. The processing equipment includes a frame, a fixing strap conveying device, and a fixing strap connecting device. The frame is equipped with a fixing strap pulling guide rail. The fixing strap connecting device includes a fixing strap pulling mechanism, a cutting device, a fixing strap feeding mechanism, and a connecting mechanism. The fixing strap feeding mechanism clamps the cut fixing straps and feeds them to the fixing position. The connecting mechanism includes pressing components located on the upper and lower sides of the bag sheet conveying path. The pressing components move towards each other to fix both ends of each fixing strap to the bag sheet. This utility model completes the connection between the fixing straps and the bag body before the bag body is formed, so that after the bag body is formed, the fixing straps are directly inside the bag body, and can be pulled open to achieve the fixing function.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven bag manufacturing, and in particular to a nonwoven bag with a fixing strip and its processing equipment. Background Technology

[0002] Non-woven bags are widely used in shopping and packaging due to their low cost and reusability. However, existing non-woven bags typically employ simple bag structures, lacking constraints on the contents or containers inside.

[0003] Some non-woven bags require a fixed structure inside the bag to limit the movement of cups or other objects inside and prevent tipping. However, this structure is usually made manually or semi-automatically, which results in low production efficiency, difficulty in ensuring processing accuracy, and poor positioning accuracy on the bag body, leading to unstable welding or bonding quality.

[0004] Therefore, there is an urgent need for a nonwoven bag that prevents the internal load from tipping over, as well as processing equipment that can achieve efficient and automated production of such nonwoven bags. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a nonwoven bag with a fixing strip and its processing equipment.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution: A nonwoven bag with fixing straps includes a bag body, which includes a bottom surface and a front surface connected to the front and rear sides of the bottom surface. Connecting surfaces are provided on the left and right sides of the front surface, and welding lines are provided on the outer sides of the connecting surfaces. Each bag body has four fixing straps, one end of which is fixed to the front surface and the other end to the connecting surface. The fixing positions of the fixing straps are located inside the welding lines, and all fixing straps are at the same fixing height on the bag body. After the bag is formed, all fixing straps are located inside the bag body. By setting fixing straps on the front and connecting surfaces of the bag body, and fixing them inside the welding lines, the fixing straps are hidden inside the bag body after it is formed, which does not affect the appearance of the bag and effectively restrains the contents inside. The four fixing straps are at the same fixing height on the bag body, forming a horizontal limiting structure after the bag is formed, which can stably support the bottom or middle of objects such as cups and bottles, effectively preventing them from tipping over. The two ends of the fixing strip are fixed to the front and the connecting surface, respectively. When the bag body is welded and formed through the connecting surface, one end of the fixing strip is on the side and the other end is on the front. The inner surface of the non-woven bag body itself is used to limit the load and achieve the function of preventing tipping.

[0007] A nonwoven bag processing equipment with a fixed strap is provided for processing nonwoven bags with a fixed strap. The equipment includes a frame, a fixed strap conveying device, and a fixed strap connecting device. The frame is equipped with a fixed strap guide rail. The fixed strap conveying device is used for continuously conveying bag body sheets and for continuously conveying the fixed strap. The fixed strap connecting device includes a fixed strap pulling mechanism, a cutting device, a fixed strap feeding mechanism, and a connecting mechanism. The fixed strap pulling mechanism is slidably mounted on the fixed strap guide rail and can reciprocate along the guide rail. The device clamps and pulls out a preset length of the fixed strip; the cutting device cuts the fixed strip pulled out by the fixed strip pulling mechanism; the fixed strip feeding mechanism includes a strip clamping component for clamping the fixed strip, and the fixed strip feeding mechanism clamps the cut fixed strip and feeds it to the strip fixing position; the connecting mechanism includes pressing components located on the upper and lower sides of the bag sheet conveying path, and the pressing components move towards each other to fix both ends of each fixed strip to the bag sheet; wherein, at least two sets of fixed strip connecting devices are provided on the left and right sides or the front and rear sides of the frame.

[0008] Integrating a fixed belt conveyor and a fixed belt connecting device, this system achieves automatic conveying, fixed-length pulling, cutting, transfer, and fixing of the fixed belt strips, enabling fully automated operation and significantly improving production efficiency. At least two sets of the fixed belt connecting device are installed on the left and right sides or front and back sides of the frame, allowing simultaneous installation of the fixed belt strips on both sides of the bag. Installation methods include adhesive bonding, hot-press welding, and ultrasonic welding. The fixed belt pulling mechanism reciprocates along the guide rail, precisely pulling out the preset length of the fixed belt strip, ensuring that each fixed belt strip is of consistent length.

[0009] Preferably, the bag conveyor transports a continuous stream of bag sheets from front to back. Each bag body sequentially stops at the first and second processing stations. Two sets of fixing strap connecting devices are installed on the left and right sides of the frame. During each stop, both sets of connecting mechanisms activate and fix the fixing straps at their designated positions onto the bag sheet. The bag sheet sequentially stops at the first and second processing stations, and the connecting mechanisms on both sides activate synchronously during each stop, simultaneously fixing the two fixing straps on both sides of the bag. This step-by-step processing method avoids process interference and helps ensure the fixing quality. The synchronous operation of the fixing strap connecting devices on both sides ensures symmetrical positioning of the fixing straps on both sides of the bag, resulting in four fixing straps fixed on the inner side of each bag.

[0010] Preferably, the feeding and fixing mechanism is connected to a linear power source. The linear power source drives the feeding and fixing mechanism to reciprocate between the strip cutting position and the strip fixing position. After the feeding and fixing mechanism clamps the fixed strip at the strip cutting position, the cutting device cuts the fixed strip. The linear power source drives the feeding and fixing mechanism to feed the fixed strip to the strip fixing position. By clamping the fixed strip at the cutting position before cutting, the feeding and fixing mechanism can effectively prevent the fixed strip from shifting during the cutting process. Furthermore, the feeding and fixing mechanism clamping the fixed strip causes the pulling and fixing mechanism to release the fixed strip. After cutting is completed or after the feeding and fixing mechanism has moved, it returns to the initial position of the pulling and fixing mechanism to pull out the fixed strip.

[0011] Preferably, the belt feeding and fixing mechanism is connected to a rotational power source. The mechanism has at least two sets of belt clamping components. The rotational power source drives the belt feeding and fixing mechanism to rotate, causing the belt clamping components to stop at the belt cutting position and the belt fixing position. At the belt cutting position, one set of clamping components holds the fixed belt, after which the cutting device cuts the fixed belt. At the belt fixing position, the other set of clamping components is in the belt fixing position. The rotational power source drives the belt feeding and fixing mechanism to rotate, causing the positions of the different sets of clamping components to switch cyclically. The belt feeding and fixing mechanism, driven by a rotational power source, achieves simultaneous cutting and fixing processes through the cyclical switching of at least two sets of belt clamping components, reducing waiting time and further improving production efficiency.

[0012] Preferably, the connecting mechanism is a welding device, and the pressing component is a welding head corresponding to both ends of the fixing strip. The welding method fixes the fixing strip to the bag body sheet, resulting in high connection strength, which is suitable for the characteristics of non-woven fabric materials, requires no additional adhesive, and is convenient for production.

[0013] Preferably, when the strip clamping component reaches the strip fixing position, it is misaligned with the pressing component. Relative to the strip to be fixed, the pressing component is located outside the strip clamping component. This misaligned arrangement, with the pressing component outside the clamping component, allows the clamping component to maintain its position on the fixed strip during welding, preventing strip displacement during the welding process. The staggered layout avoids interference between the clamping components and the welding head, ensuring the smooth progress of the welding operation.

[0014] Preferably, the tensioning and fixing mechanism includes a clamping cylinder mounted on a movable mounting base. The movable mounting base is slidably mounted on the tensioning and fixing guide rail via a slider. The output end of the clamping cylinder moves up and down to cooperate with the movable mounting base to clamp the fixing strip. When the tensioning and fixing mechanism slides, the position of the feeding and fixing mechanism is offset from that of the tensioning and fixing mechanism to avoid its movement. When the tensioning and fixing mechanism slides, the position of the feeding and fixing mechanism is offset from that of the tensioning and fixing mechanism to avoid interference between the two during movement.

[0015] This utility model, by adopting the above technical solution, has significant technical effects: This invention solves the problem of existing non-woven bags lacking the ability to restrain internal loads and effectively prevent cups, bottles, and other objects from tipping over. By setting up fixed straps of consistent height inside the bag, an effective limiting structure that matches the inner surface of the bag can stably support the internal loads and prevent them from tipping over. Workers do not need to pre-install trays inside the non-woven bags to fix cups, and the thickness of the non-woven bags hardly changes after being folded and stored.

[0016] The processing equipment achieves full automation of the installation of the fixing strip through precise positioning, ensuring the installation accuracy and connection quality of the fixing strip. The connection between the fixing strip and the bag body is completed before the bag body is formed, so that the fixing strip is directly located inside the bag body after the bag body is formed, without the need for additional installation. It can be pulled open to play a fixing role. Using such equipment improves production efficiency and reduces labor costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the processing equipment of this utility model; Figure 2 This is a schematic diagram of the internal structure of one side of the processing equipment of this utility model; Figure 3 yes Figure 2 A structural diagram of the rearview angle; Figure 4 This is a structural schematic diagram of the fixing belt connecting device of this utility model; Figure 5 This is a structural schematic diagram of the nonwoven bag of this utility model.

[0018] The parts referred to by the numbers in the above attached figures are as follows: 1. Bag body; 11. Bottom surface; 12. Front surface; 13. Connecting surface; 14. Welding line; 2. Fixing strap; 3. Frame; 31. Fixing strap guide rail; 4. Fixing strap conveyor; 5. Fixing strap connecting device; 51. Fixing strap pulling mechanism; 52. Cutting device; 53. Fixing strap feeding mechanism; 531. Strap clamping component; 532. Linear power source; 54. Connecting mechanism; 541. Pressing component. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0020] A nonwoven bag with a fixing strap, such as Figure 5As shown, the bag body 1 includes a bottom surface 11 and a front surface 12 connected to the front and rear sides of the bottom surface 11. Connecting surfaces 13 are respectively provided on the left and right sides of the front surface 12, and welding lines 14 are provided on the outer side of the connecting surfaces 13. Each bag body 1 is provided with four fixing strips 2. One end of each fixing strip 2 is fixed to the front surface 12, and the other end is fixed to the connecting surface 13. The fixing positions of the fixing strips 2 are located inside the welding lines 14. The fixing height of each fixing strip 2 on the bag body 1 is the same. After the bag body is formed, each fixing strip 2 is located inside the bag body. By setting fixing strips on the front and connecting surfaces of the bag body, and fixing them inside the welding line, the fixing strips are hidden inside the bag body after the bag is formed. This does not affect the appearance of the bag and can effectively restrain the contents inside. The four fixing strips are fixed at the same height on the bag body, forming a horizontal limiting structure after the bag is formed. This can stably support the bottom or middle of cups, bottles and other objects, effectively preventing them from tipping over. The two ends of the fixing strip are fixed to the front and the connecting surface, respectively. When the bag body is welded and formed through the connecting surface, one end of the fixing strip is on the side and the other end is on the front. The inner surface of the non-woven bag body itself is used to limit the load and achieve the function of preventing tipping.

[0021] The fixing straps 2 are fixed to the inner side of the bag body 1 by adhesive or welding when the bag body 1 is still a sheet material. The two ends of the fixing straps 2 are located on the adjacent front face 12 and connecting face 13, respectively. When the bag body is formed, the front faces 12 on both sides are folded back and forth relative to the bottom face 11. The two connecting faces 13 on the same side of the two front faces are welded along the welding line 14 to form the side. The left and right sides of the bottom face 11 are welded to the bottom of the already welded side. Each fixing strap 2 is located inside the bag body, forming a horizontal limiting structure, which can support and limit the internal load and prevent it from tipping over. When loading, the fixing straps are pulled open, and the load is placed in the space formed by the fixing straps 2 and the front and side faces of the bag body. The fixing straps 2 and the inner surface of the bag body are used to limit the load. Example

[0022] A nonwoven bag processing device with a fixing strip, such as Figure 1-2 As shown, this is used to process nonwoven bags with fixed straps, such as... Figure 5As shown, the non-woven bag includes a bag body 1, which includes a bottom surface 11 and a front surface 12 connected to the front and rear sides of the bottom surface 11. Connecting surfaces 13 are respectively provided on the left and right sides of the front surface 12, and welding lines 14 are provided on the outer side of the connecting surfaces 13. Each bag body 1 is provided with four fixing strips 2. One end of each fixing strip 2 is fixed to the front surface 12, and the other end is fixed to the connecting surface 13. The fixing positions of the fixing strips 2 are located inside the welding lines 14. The fixing height of each fixing strip 2 on the bag body 1 is the same. After the bag body is formed, each fixing strip 2 is located inside the bag body. The processing equipment includes a frame 3, a fixed belt conveyor 4, and a fixed belt connecting device 5. The frame 3 is equipped with a fixed belt guide rail 31. The fixed belt conveyor 4 is a bag conveyor for continuously conveying bag body sheets and a device for continuously conveying fixed belt strips 2. The fixed belt connecting device 5 includes a fixed belt pulling mechanism 51, a cutting device 52, a fixed belt feeding mechanism 53, and a connecting mechanism 54. The fixed belt pulling mechanism 51 is slidably mounted on the fixed belt pulling guide rail 31 and can reciprocate along the fixed belt pulling guide rail 31 to clamp the fixed belt strip 2 and pull it out to a preset length. The cutting device 52 is used to cut the fixed strip 2 pulled out by the fixed strip pulling mechanism 51; the fixed strip feeding mechanism 53 includes a strip clamping component 531 for clamping the fixed strip 2, and the fixed strip feeding mechanism 53 clamps the cut fixed strip 2 and feeds it to the strip fixing position; the connecting mechanism 54 includes pressing components 541 located on the upper and lower sides of the bag sheet conveying path, and the pressing components 541 move towards each other to fix both ends of each fixed strip 2 to the bag sheet; wherein, the fixed strip connecting device 5 is provided in at least two sets on the left and right sides or the front and rear sides of the frame 3. The fixed strip conveying device 4 does not require a power source and can only be provided with a conveying roller as a guide, relying on the fixed strip pulling mechanism 51 to pull the fixed strip 2 from the material roll to a fixed length.

[0023] like Figure 1 As shown, the bag conveying device drives the continuous bag sheet material to be conveyed from front to back. Each bag body 1 stops at the first processing station and the second processing station in sequence. There are two sets of fixing belt connecting devices 5 on the left and right sides of the frame 3. Each time it stops, the two sets of connecting mechanisms 54 are activated and fix the fixing belt 2 of the belt fixing position to the bag sheet material.

[0024] As one implementation method, such as Figure 3-4As shown, the tape feeding and fixing mechanism 53 is connected to a linear power source 532. The linear power source 532 drives the tape feeding and fixing mechanism 53 to reciprocate between the tape cutting position and the tape fixing position. After the tape feeding and fixing mechanism 53 clamps the fixed tape 2 at the tape cutting position, the cutting device 52 cuts the fixed tape 2. The linear power source 532 drives the tape feeding and fixing mechanism 53 to clamp the fixed tape 2 and send it to the tape fixing position. In another embodiment, the structure is not shown in the figure. The feeding and fixing mechanism 53 is connected to a rotational power source. At least two sets of strip clamping components 531 are provided on the feeding and fixing mechanism 53. The rotational power source drives the feeding and fixing mechanism 53 to rotate, causing the strip clamping components 531 to stop at the strip cutting position and the strip fixing position. One set of strip clamping components 531 clamps the fixed strip 2 at the strip cutting position, after which the cutting device 52 cuts the fixed strip 2. The other set of strip clamping components 531 is in the strip fixing position. The rotational power source drives the feeding and fixing mechanism 53 to rotate, causing the positions of the different sets of strip clamping components 531 to switch cyclically. The rotational power source driving the feeding and fixing mechanism 53 to rotate causes the positions of the different sets of strip clamping components 531 to switch cyclically, achieving continuous operation.

[0025] like Figure 3-4 As shown, the connecting mechanism 54 is a welding device, and the pressing component 541 is a welding head corresponding to both ends of the fixed strip 2.

[0026] When the strip clamping component 531 reaches the strip fixing position, it is misaligned with the pressing component 541. Relative to the fixed strip 2 to be fixed, the pressing component 541 is located outside the strip clamping component 531.

[0027] The tensioning and fixing mechanism 51 includes a movable mounting base 511 and a clamping cylinder 512 mounted on the movable mounting base 511. The movable mounting base 511 is slidably mounted on the tensioning and fixing guide rail 31 via a slider 513. The output end of the clamping cylinder 512 cooperates with the movable mounting base 511 to clamp the fixing strip 2 by moving up and down. When the tensioning and fixing mechanism 51 slides, the position of the fixing feeding mechanism 53 is offset from the tensioning and fixing mechanism 51 to avoid its movement.

[0028] One of the working principles: The bag conveyor drives the continuous sheet material of bags from front to back. A pull roller can be set downstream of the production line. Each rotation of the pull roller causes the continuous sheet material to be conveyed forward. Each bag body 1 stops sequentially at the first processing station and the second processing station. Here, each bag body 1 refers to the continuous sheet material, but it is called bag body 1 only to distinguish the dividing line of each bag. Two sets of fixing strap connecting devices 5 are set on the left and right sides of the frame 3. The non-woven fabric sheet material is conveyed from front to back, and the conveying direction is straight with the left and right direction. Each time the bag sheet material stops, the two sets of connecting mechanisms 54 act synchronously, and at the same time fix the two fixing straps 2 on both sides of the bag to the bag sheet material.

[0029] The feeding and fixing mechanism 53 is connected to a linear power source 532. The linear power source 532 drives the feeding and fixing mechanism 53 to reciprocate between the strip cutting position and the strip fixing position. The pulling and fixing mechanism 51 is slidably mounted on the pulling and fixing guide rail 31 and can reciprocate along the guide rail. It is used to clamp the fixing strip 2 and pull it out to a preset length. Then, the feeding and fixing mechanism 53 clamps the fixing strip 2 at the strip cutting position. After the cutting device 52 cuts the fixing strip 2, the linear power source 532 drives the feeding and fixing mechanism 53 to feed the fixing strip 2 to the strip fixing position. The connecting mechanism 54 is a welding device, and the pressing component 541 is the welding head corresponding to both ends of the fixing strip 2. When the fixing strip 2 is fed to the strip fixing position, the welding heads on the upper and lower sides move towards each other, heat-melting the two ends of the fixing strip 2 to the bag body sheet.

[0030] The aforementioned power sources can all be cylinders, motors, or cylinders and motors that utilize gear and rack mechanisms, lead screw and nut mechanisms, slider guides, and connecting rod mechanisms for transmission, with a synchronous pulley driving the clamps on the belt to achieve movement. Rotation can be directly driven by the motor, or it can drive the synchronous pulley to rotate, thereby driving the belt fitted on the synchronous pulley.

[0031] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. 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 indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In summary, the above are merely preferred embodiments of this utility model. All equivalent variations and modifications made within the scope of the claims of this utility model should be covered by this utility model patent.

Claims

1. A nonwoven bag with a fixing strap, characterized in that, The bag body (1) includes a bottom surface (11) and a front surface (12) connected to the front and back sides of the bottom surface (11). The left and right sides of the front surface (12) are respectively provided with connecting surfaces (13), and welding lines (14) are provided on the outside of the connecting surfaces (13). Each bag body (1) is provided with four fixing straps (2), one end of each fixing strap (2) is fixed to the front (12), and the other end is fixed to the connecting surface (13). The fixing strip (2) is located inside the welding line (14). Each fixing strip (2) has the same fixing height on the bag body (1). After the bag body is formed, each fixing strip (2) is located inside the bag body.

2. A nonwoven bag processing equipment with a fixing strip, characterized in that, For processing the nonwoven bag with fixed straps as described in claim 1, including The frame (3) is equipped with a tension fixing guide rail (31); Fixed belt conveyor (4), fixed belt conveyor (4) is a bag conveyor for continuously conveying bag sheet material and a fixed belt (2) for continuously conveying. Fixed belt connecting device (5); include - Pulling and fixing belt mechanism (51), the pulling and fixing belt mechanism (51) is slidably set on the pulling and fixing belt guide rail (31) and can reciprocate along the pulling and fixing belt guide rail (31) to clamp the fixing belt strip (2) and pull out a preset length; - Cutting device (52) for cutting the fixed strip (2) pulled out by the fixed strip pulling mechanism (51); - The fixed belt feeding mechanism (53) includes a belt clamping component (531) for clamping the fixed belt (2). The fixed belt feeding mechanism (53) clamps the cut fixed belt (2) and feeds it to the belt fixing position. - The connecting mechanism (54) includes pressing components (541) located on the upper and lower sides of the bag sheet conveying path. The pressing components (541) move towards each other to fix the two ends of each fixing strip (2) to the bag sheet. Among them, the fixing belt connecting device (5) is provided in at least two sets on the left and right sides or the front and rear sides of the frame (3).

3. The nonwoven bag processing equipment with a fixing strip according to claim 2, characterized in that: The bag conveyor drives the continuous bag sheet material to be conveyed from front to back. Each bag body (1) stops at the first processing station and the second processing station in sequence. The fixing belt connecting device (5) is set in two sets on the left and right sides of the frame (3). Each time it stops, the two sets of connecting mechanisms (54) are activated and fix the fixing belt (2) of the belt fixing position on the bag sheet material.

4. The nonwoven bag processing equipment with a fixing strip according to claim 2, characterized in that: The fixed belt feeding mechanism (53) is connected to a linear power source (532). The linear power source (532) drives the fixed belt feeding mechanism (53) to reciprocate between the belt cutting position and the belt fixing position. After the fixed belt feeding mechanism (53) clamps the fixed belt (2) at the belt cutting position, the cutting device (52) cuts the fixed belt (2). The linear power source (532) drives the fixed belt feeding mechanism (53) to clamp the fixed belt (2) and feed it to the belt fixing position.

5. The nonwoven bag processing equipment with a fixing strip according to claim 2, characterized in that: The feeding and fixing mechanism (53) is connected to a rotational power source. At least two sets of strip clamping components (531) are provided on the feeding and fixing mechanism (53). The rotational power source drives the feeding and fixing mechanism (53) to rotate so that the strip clamping components (531) stay at the strip cutting position and the strip fixing position. After one set of strip clamping components (531) clamps the fixed strip (2) at the strip cutting position, the cutting device (52) cuts the fixed strip (2). The other set of strip clamping components (531) is in the strip fixing position. The rotational power source drives the feeding and fixing mechanism (53) to rotate so that the positions of different sets of strip clamping components (531) are switched cyclically.

6. The nonwoven bag processing equipment with a fixing strip according to claim 2, characterized in that: The connecting mechanism (54) is a welding device, and the pressing component (541) is a welding head corresponding to both ends of the fixed strip (2).

7. The nonwoven bag processing equipment with a fixing strip according to claim 6, characterized in that: When the strip clamping component (531) reaches the strip fixing position, it is misaligned with the pressing component (541). Relative to the fixed strip (2) to be fixed, the pressing component (541) is located outside the strip clamping component (531).

8. The nonwoven bag processing equipment with a fixing strip according to claim 2, characterized in that: The tensioning and fixing mechanism (51) includes a movable mounting base (511) and a clamping cylinder (512) mounted on the movable mounting base (511). The movable mounting base (511) is slidably mounted on the tensioning and fixing guide rail (31) via a slider (513). The output end of the clamping cylinder (512) cooperates with the movable mounting base (511) to clamp the fixing strip (2) by moving up and down. When the tensioning and fixing mechanism (51) slides, the position of the fixing feeding mechanism (53) is offset from the tensioning and fixing mechanism (51) to avoid its movement.

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