Automatic flat rope threading machine for paper bag piece

Abstract

The present application belongs to the field of automatic forming equipment of flat rope hand paper bag, and relates to a kind of paper bag piece material automatic flat rope threading machine, including rack, and feeding platform and piece material conveying device are equipped on the rack, and point gluing device and flat rope threading device are sequentially equipped on the feeding platform;The flat rope threading device includes rope pulling mechanism, two groups of rotating mechanism, rope inserting mechanism and rope pressing mechanism;Two groups of rotating mechanism are symmetrically arranged, and each group of rotating mechanism includes rotating motor, rotating support and rope clamping cylinder that clamps flat rope, rotating support is fixed at the extension end of rotating motor, and rope clamping cylinder is fixed on rotating support, two rope clamping cylinders are arranged on the moving path of rope pulling cylinder, and two rope clamping cylinders are arranged between rope pulling cylinder and hot cutter;The rope inserting mechanism includes rope inserting cylinder fixed on the rotating support, and the extension end of the rope inserting cylinder is a rope inserting plate;The device has the advantages of being able to automatically thread flat rope for paper bag piece material and improving production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of automated forming equipment for flat rope paper bags, and relates to an automatic flat rope threading machine for paper bag sheets. Technical Background

[0002] Paper bags are mainly used for packaging clothing and gift boxes. The top of the left and right sides of the bag has two corresponding holes for threading the flat rope. The existing paper bags are made by manually picking up the bag, picking up the rope, threading the flat rope, and gluing. The production operation is not continuous and requires picking up the bag and rope multiple times. Therefore, the production efficiency is low, the manual handling is labor-intensive, and the processing cost is high. Summary of the Invention

[0003] In view of the above problems, the present invention provides an automatic flattening rope threading machine for paper bag sheet material. This device has the advantage of being able to automatically thread flatten ropes onto paper bag sheet material, thereby improving production efficiency.

[0004] The objective of this invention is achieved as follows:

[0005] An automatic flat rope threading machine for paper bag sheet material includes a frame, a feeding platform and a sheet material conveying device on the frame, and a glue dispensing device and a flat rope threading device are arranged sequentially on the feeding platform. The sheet material conveying device first sends the sheet material to the glue dispensing device and then to the flat rope threading device.

[0006] The flat rope threading device includes a rope pulling mechanism, two sets of rotating mechanisms, a rope insertion mechanism, and a rope pressing mechanism;

[0007] The rope pulling mechanism includes a rope feeding device, a rope pulling cylinder, and a horizontal drive device for driving the rope pulling cylinder to move back and forth. The rope feeding device includes a rope inlet, and a flat rope cutting device is provided in front of the rope inlet. The rope pulling cylinder is located in front of the flat rope cutting device.

[0008] Two sets of rotating mechanisms are symmetrically arranged. Each set of rotating mechanisms includes a rotating motor, a rotating bracket, and a rope-clamping cylinder that clamps the flat rope. The rotating bracket is fixed to the extended end of the rotating motor, and the rope-clamping cylinder is fixed on the rotating bracket. The two rope-clamping cylinders are arranged on the moving path of the rope-pulling cylinder and are arranged between the rope-pulling cylinder and the hot cutting blade.

[0009] The rope insertion mechanism includes a rope insertion cylinder fixed on a rotating bracket, and the extended end of the rope insertion cylinder is a rope insertion plate.

[0010] The rope pressing mechanism includes an inner pressure plate, an inner pressure plate cylinder, a rope pressing plate, and a rope pressing plate cylinder disposed above the sheet material. The inner pressure plate includes an inner pressure part disposed inside the flat rope hole, and the rope pressing plate is disposed outside the flat rope hole.

[0011] The sheet material is conveyed by a sheet material conveying device to a glue dispensing device for glue application, and then sent to a flat rope threading device for flat rope threading. In the flat rope threading device, the flat rope is cut to a fixed length by a rope pulling mechanism, and then the flat rope is fed to the bottom of the sheet material by a rotating mechanism. The flat rope is then passed through the flat rope threading hole of the sheet material by a rope insertion mechanism, and finally pressed by a rope pressing mechanism to press the flat rope onto the glue application area, thus realizing fully automatic flat rope threading of paper bag sheet material.

[0012] The present invention is further configured such that: the rope-pulling cylinder includes an extended end, a first fixing plate is provided in front of the extended end, the first fixing plate is fixedly connected to the rope-pulling cylinder, and a flat rope is disposed between the extended end and the first fixing plate.

[0013] By using the extended end and the first fixed plate, the rope-pulling cylinder clamps the flat rope at the rope inlet and then cuts it with the cutting device, thus achieving the function of fixing the length of the flat rope.

[0014] The invention is further configured such that: the horizontal drive device includes a rope-pulling guide rail fixed in front of the rope inlet; a guide seat matching the guide rail is fixed on the rope-pulling cylinder; the guide seat is slidably disposed on the guide rail; the frame is also provided with a drive motor and a synchronous belt driven by the motor; and the rope-pulling cylinder is fixedly connected to the synchronous belt.

[0015] The guide rail and guide seat provide guidance and stability for the movement of the rope-pulling cylinder; and the drive motor and synchronous belt drive the rope-pulling cylinder to move on the guide rail.

[0016] The present invention is further configured such that: the rope feeding device includes a guide wheel, a guide platform and an elastic sheet, the guide platform is provided with an elastic sheet fixing frame, the upper end of the elastic sheet is fixed on the fixing frame, the lower end is bent and abuts against the guide platform, the elastic sheet is bent into an arc shape, and the flat rope cutting device is disposed between the guide platform and the rope pulling cylinder.

[0017] By using elastic tabs, the tote bag is straightened as it passes the guide platform, making the length of the flat rope more precise.

[0018] The invention is further configured such that: the flat rope cutting device includes a hot cutting blade fixed on the frame (because the flat rope is made of plastic, hot cutting is more effective) and a cutting cylinder that drives the cutting blade to move up and down, the hot cutting blade being positioned between the guide table and the rope pulling cylinder.

[0019] The present invention is further configured such that: a second fixing plate is provided at the clamping end of the rotating bracket corresponding to the rope clamping cylinder, and the flat rope is disposed between the clamping end and the second fixing plate.

[0020] The rope clamping cylinder fixes the flat rope by setting the clamping end and the second fixing plate, so that it can work with the rotary motor to rotate the flat rope to below the flat rope hole.

[0021] The present invention is further configured such that: the upper end of the second fixing plate is provided with a clearance groove.

[0022] With the addition of the clearance groove, after the rotary motor rotates, the second fixing plate is positioned below the inner pressure section. The presence of the clearance groove brings the flat rope and the flat rope threading hole closer together, making it easier to thread the flat rope.

[0023] The present invention is further configured such that: the rotating bracket is a hollow frame bracket, with part of the frame bracket disposed on the inner side of the rope guide rail and part disposed on the outer side of the rope guide rail, forming a structure in which the guide rail is disposed in the middle of the frame bracket, and the rope clamping cylinder and the rope inserting cylinder disposed on the outer side of the bracket.

[0024] With a hollow frame bracket and a guide rail positioned in the middle of the frame bracket, the frame bracket will not interfere with the movement of the rope-pulling cylinder after the rotary motor rotates. This allows the rope-pulling cylinder to return to the rope inlet position to perform a fixed-length rope-pulling action during the flat rope threading process, thereby accelerating production efficiency.

[0025] The present invention is further configured such that: the sheet material conveying device includes a conveying motor fixed on the frame and a conveyor belt driven by the conveying motor, a suction cylinder is fixed on the conveyor belt, and a suction nozzle is fixed to the extended end of the suction cylinder.

[0026] The present invention is further configured such that: the frame is also provided with a lifting mechanism, the lifting mechanism includes a lifting bracket and a lifting cylinder, the rope pulling mechanism and the rotating mechanism are both fixed on the lifting bracket, the extended end of the lifting cylinder abuts against the lifting bracket to drive the lifting bracket to move up and down, thereby driving the rope pulling mechanism and the rotating mechanism to move up and down.

[0027] If the rotating mechanism is set too close to the sheet material from the beginning, the sheet material, being made of paper, is prone to bending downwards due to gravity, which can easily cause interference with the sheet material. Therefore, by setting up a lifting mechanism, the interference problem can be effectively avoided.

[0028] The outstanding and beneficial technical effects of this invention compared to the prior art are as follows: the sheet material is conveyed by a sheet material conveying device to a glue dispensing device for glue application, and then sent to a flat rope threading device for flat rope threading. In the flat rope threading device, the flat rope is cut to a fixed length by a rope pulling mechanism, and then the flat rope is sent to the bottom of the sheet material by a rotating mechanism. The flat rope is then passed through the flat rope threading hole of the sheet material by a rope insertion mechanism, and finally the flat rope is pressed against the glue application area by a rope pressing mechanism, thereby realizing fully automatic flat rope threading of paper bag sheet material. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of a flat rope threading machine.

[0031] Figure 2 This is one of the structural schematic diagrams of the sheet material conveying device, the glue dispensing device, and the flat rope threading device.

[0032] Figure 3 This is the second structural diagram of the sheet material conveying device, the dispensing device, and the flat rope threading device.

[0033] Figure 4 This is a schematic diagram of the device for threading a flat rope.

[0034] Figure 5 This is a schematic diagram of the rope pulling mechanism and the rotating mechanism.

[0035] Figure 6 This is a schematic diagram of the rope-pulling cylinder.

[0036] Figure 7 This is a schematic diagram of the rope feeding device.

[0037] Figure 8 This is a schematic diagram of the rotating mechanism.

[0038] Figure 9 This is a schematic diagram showing the positions of the rotating mechanism and the rope-pulling mechanism after rotation.

[0039] Figure 10 This is a schematic diagram of the rotating mechanism after it has rotated.

[0040] Figure 11 This is a schematic diagram of the rope pressing device.

[0041] 1-Frame; 11-Sheet material; 12-Flat rope; 13-Plank rope hole;

[0042] 2-Feeding platform; 3-Sheet conveying device; 31-Conveyor motor; 32-Conveyor belt; 33-Suction cylinder; 34-Suction nozzle; 4-Dispensing device;

[0043] 5-Pantograph device;

[0044] 6-Rope pulling mechanism; 61-Rope feeding device; 611-Rope inlet; 612-Guide wheel; 613-Guide platform; 614-Elastic sheet; 615-Elastic sheet fixing bracket; 616-Hot cutting blade; 617-Cutter cylinder;

[0045] 62-Rope-pulling cylinder; 621-Extending end; 622-First fixing plate;

[0046] 63-Horizontal drive unit; 631-Rope guide rail; 632-Guide seat; 633-Drive motor; 634-Synchronous belt;

[0047] 7-Rotating mechanism; 71-Rotating motor; 711-Extended end of rotating motor; 72-Rotating bracket; 73-Rope clamping cylinder; 74-Clamping end; 75-Second fixing plate; 76-Relief groove; 77-Outer side of bracket;

[0048] 8- Rope insertion mechanism; 81- Rope insertion cylinder; 82- Rope insertion plate;

[0049] 9-Rope pressing mechanism; 91-Inner pressure plate; 92-Inner pressure plate cylinder; 93-Rope pressing plate; 94-Rope pressing plate cylinder; 95-Inner pressure section;

[0050] 10 Lifting mechanism; 101 Lifting bracket; 102 Lifting cylinder; 103 Extended end of lifting cylinder. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0052] An automatic flattening rope threading machine for paper bag sheet material includes a frame 1, a feeding platform 2 and a sheet material conveying device 3 on the frame 1. A glue dispensing device 4 and a flattening rope threading device 5 are arranged sequentially on the feeding platform. The sheet material conveying device 3 first sends the sheet material 11 to the glue dispensing device 4 (the glue dispensing device is a glue gun, which will not be described in detail in the prior art), and then sends it to the flattening rope threading device 5. The sheet material conveying device 3 includes a conveying motor 31 fixed on the frame 1 and a conveyor belt 32 driven by the conveying motor 31. A suction cylinder 33 is fixed on the conveyor belt 32. A suction nozzle 34 is fixed to the extended end of the suction cylinder 33. The extended end of the suction cylinder 33 extends out, and the suction nozzle 34 sucks up the sheet material 11 for conveying by an air pump.

[0053] The flat rope threading device includes a rope pulling mechanism 6, two sets of rotating mechanisms 7, a rope insertion mechanism 8, and a rope pressing mechanism 9;

[0054] The rope pulling mechanism 6 includes a rope feeding device 61, a rope pulling cylinder 62, and a horizontal drive device 63 that drives the rope pulling cylinder to move back and forth.

[0055] The rope feeding device 61 includes a rope inlet 611, a guide wheel 612, a guide platform 613, and an elastic sheet 614. An elastic sheet fixing bracket 615 is provided on the guide platform 613. The upper end of the elastic sheet 614 is fixed to the fixing bracket 615, and the lower end is bent and rests against the guide platform 613. The elastic sheet 614 is bent into an arc shape. A hot-cutting blade 616 is provided in front of the guide platform 612. The blade is a hot-cutting blade to reduce cutting force and prevent the flat rope from moving. A cutting cylinder 617 drives the blade 616 to move up and down. Through the setting of the elastic sheet 614, the bag is straightened by the elastic sheet 614 as it passes through the guide platform 613, thus ensuring a more precise length of the flat rope 12.

[0056] The rope-pulling cylinder 62 includes an extension end 621, and a first fixing plate 622 is provided in front of the extension end 621. The first fixing plate 622 is fixedly connected to the rope-pulling cylinder 62, and the flat rope 12 is disposed between the extension end 621 and the first fixing plate 622. Through the arrangement of the extension end 621 and the first fixing plate 622, the rope-pulling cylinder 62 clamps the flat rope 12 at the rope inlet 611, and then cuts it by the hot cutting blade 616, thereby achieving the function of fixing the length of the flat rope 12.

[0057] The horizontal drive device 63 includes a rope guide rail 631 fixed in front of the rope inlet 611. A guide seat 632 matching the guide rail 631 is fixed on the rope-pulling cylinder 62. The guide seat 632 is slidably mounted on the guide rail 631. The frame 1 also includes a drive motor 633 and a synchronous belt 634 driven by the motor. The rope-pulling cylinder 62 is fixedly connected to the synchronous belt 634. The drive motor 633 drives the synchronous belt 634 to rotate, which in turn drives the rope-pulling cylinder 62 to move back and forth. The guide rail 631 and guide seat 632 provide guidance and stability for the movement of the rope-pulling cylinder 62; and the drive motor 633 and synchronous belt 634 drive the rope-pulling cylinder to move on the guide rail 631.

[0058] Two sets of rotating mechanisms 7 are symmetrically arranged. Each set of rotating mechanisms 7 includes a rotating motor 71, a rotating bracket 72, and a rope clamping cylinder 73 for clamping the flat rope 12. The rotating bracket 72 is fixed to the extended end 711 of the rotating motor, and the rope clamping cylinder 73 is fixed on the rotating bracket 72. The two rope clamping cylinders 73 are arranged on the moving path of the rope pulling cylinder 62 and are arranged between the rope pulling cylinder 62 and the hot cutting blade 616.

[0059] The rotating bracket 72 is provided with a second fixing plate 75 corresponding to the clamping end 74 of the rope clamping cylinder, and the flat rope 12 is disposed between the clamping end 74 and the second fixing plate 75. The rope clamping cylinder 73 fixes the flat rope 12 by means of the clamping end 74 and the second fixing plate 75, so that it can cooperate with the rotating motor 71 to rotate the flat rope 12 to below the flat rope hole 13.

[0060] The upper end of the second fixing plate 75 is provided with a relief groove 76. With the setting of the relief groove 76, after the rotary motor 71 rotates, the second fixing plate 75 is set below the inner pressure part 95. Due to the existence of the relief groove 76, the distance between the flat rope 12 and the flat rope hole 13 is closer, making it easier to thread the flat rope.

[0061] The rotating support 72 is a hollow frame-shaped support. Part of the frame-shaped support is located inside the rope guide rail 631, and part is located outside the rope guide rail 631, forming a structure where the guide rail 631 is located in the middle of the frame-shaped support. The rope clamping cylinder 73 and the rope inserting cylinder 81 are located on the outer side 77 of the support (closer to the sheet material). Through the hollow frame-shaped support and the placement of the guide rail 631 in the middle of the frame-shaped support, the frame-shaped support will not interfere with the movement of the rope pull cylinder 62 after the rotary motor 71 rotates. This allows the rope pull cylinder 62 to return to the rope inlet 611 position to perform a fixed-length rope pull during the flat rope threading process, thereby accelerating production efficiency.

[0062] The rope insertion mechanism 8 includes a rope insertion cylinder 81 fixed on the rotating bracket 72. The rope insertion cylinder 81 is fixed on the side of the rope clamping cylinder 73. The extended end of the rope insertion cylinder 81 is a rope insertion plate 82. After the rotating motor 71 rotates, the rope insertion plate 82 corresponds to the area below the flat rope hole 13.

[0063] The rope pressing mechanism 9 includes an inner pressure plate 91, an inner pressure plate cylinder 92, a rope pressing plate 93, and a rope pressing plate cylinder 94 disposed above the sheet material 11. The inner pressure plate 91 includes an inner pressure part 95, which is disposed inside the flat rope hole 13. The rope pressing plate 93 is disposed outside the flat rope hole 13.

[0064] The frame 1 is also equipped with a lifting mechanism 10, which includes a lifting bracket 101 and a lifting cylinder 102. The rope pulling mechanism 6 and the rotating mechanism 7 are both fixed on the lifting bracket 101. The extended end 103 of the lifting cylinder abuts against the lifting bracket 101, causing the lifting bracket 101 to move up and down, thereby causing the rope pulling mechanism 6 and the rotating mechanism 7 to move up and down, which in turn causes the rope clamping cylinder 73 and the rope inserting cylinder 81 in the rotating mechanism 7 to move up and down, thus allowing the flat rope 12 to be closer to the flat rope hole 13. If the rotating mechanism 7 is set too close to the sheet material 11 from the beginning, the sheet material 11, being made of paper, is prone to bending downwards under gravity, which may easily cause interference with the sheet material. Therefore, the lifting mechanism 10 effectively avoids the interference problem.

[0065] Working principle:

[0066] The sheet material 11 is cut and punched with flat rope holes 13 before being fed into the fully automatic flat rope threading machine. First, the sheet material 11 is sent to the feeding platform 2 of the flat rope threading machine, where the suction nozzle 34 on the sheet material conveying device picks up the sheet material 11 and moves it. The suction nozzle 34 first transports the sheet material 11 to the glue dispensing device 4, where glue is sprayed at a set position (outside the flat rope holes) to secure the flat rope later.

[0067] Then the sheet conveying device continues to move to send the sheet 11 to the flat rope threading device, specifically positioned below the inner pressure plate 91. The inner pressure part 95 of the inner pressure plate is located inside the sheet flat rope threading hole 13.

[0068] The sheet material conveying device 3 and the flat rope threading device work separately. The rope pulling cylinder 62 of the flat rope threading device pulls the flat rope 12 to the set length (position) from the rope inlet 611, and then cuts it by the hot cutting knife 616.

[0069] Next, the clamping ends 74 of the two rope-clamping cylinders 73 extend upwards to press against the flat rope 12. The rotary motor 71 drives the rope-clamping cylinder 73 and the rope-inserting cylinder 81 to rotate 90° to below the flat rope threading hole 13 on the sheet material. The threading hole is located at the inward fold of the bag opening. The lifting cylinder 102 moves the entire flat rope threading device upwards, causing the flat rope 12 to move upwards and approach the flat rope threading hole 13. The rope-inserting plate 82 of the rope-inserting cylinder 81 extends upwards to insert the flat rope 12 into the flat rope threading hole 13, and then the rope-inserting plate 82 retracts. Due to the elastic effect, the flat rope 12 tilts outwards. Then, the rope-pressing plate 93 of the rope-pressing cylinder 94 extends downwards to press the flat rope 12 to the glue application point, thus completing the flat rope threading process. Then, the sheet material 11 with the threaded rope is taken out by other equipment and transferred to the next forming equipment.

[0070] While the rope inserting cylinder 81 completes the threading of the flat rope, the rope pulling cylinder 62 returns to the rope inlet 611 and pulls the flat rope 12 to the set length (position) and cuts it; while the sheet material conveying device 3 feeds the material, the rotary motor 71 rotates the flat rope 12 to below the threading hole 13, thereby speeding up production efficiency.

[0071] This invention has the feature of automating the threading of flat ropes onto paper bag sheets, thereby improving production efficiency.

[0072] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic flat rope threading machine for paper bag sheet material, comprising a frame, a feeding platform and a sheet material conveying device mounted on the frame, characterized in that, The feeding platform is equipped with a dispensing device and a flat rope threading device in sequence. The sheet material conveying device first sends the sheet material to the dispensing device, and then to the flat rope threading device. The flat rope threading device includes a rope pulling mechanism, two sets of rotating mechanisms, a rope insertion mechanism, and a rope pressing mechanism; The rope pulling mechanism includes a rope feeding device, a rope pulling cylinder, and a horizontal drive device for driving the rope pulling cylinder to move back and forth. The rope feeding device includes a rope inlet, and a flat rope cutting device is provided in front of the rope inlet. The rope pulling cylinder is located in front of the flat rope cutting device. Two sets of rotating mechanisms are symmetrically arranged. Each set of rotating mechanisms includes a rotating motor, a rotating bracket, and a rope-clamping cylinder for clamping the flat rope. The rotating bracket is fixed to the extended end of the rotating motor, and the rope-clamping cylinder is fixed on the rotating bracket. The two rope-clamping cylinders are arranged on the moving path of the rope-pulling cylinder and are arranged between the rope-pulling cylinder and the flat rope cutting device. The rope insertion mechanism includes a rope insertion cylinder fixed on a rotating bracket, and the extended end of the rope insertion cylinder is a rope insertion plate. The rope pressing mechanism includes an inner pressure plate, an inner pressure plate cylinder, a rope pressing plate, and a rope pressing plate cylinder disposed above the sheet material. The inner pressure plate includes an inner pressure part disposed inside the flat rope hole, and the rope pressing plate is disposed outside the flat rope hole. The rope-pulling cylinder includes an extended end, and a first fixing plate is provided in front of the extended end. The first fixing plate is fixedly connected to the rope-pulling cylinder, and a flat rope is disposed between the extended end and the first fixing plate. The horizontal drive device includes a rope-pulling guide rail fixed in front of the rope inlet, a guide seat that matches the guide rail fixed on the rope-pulling cylinder, the guide seat being slidably mounted on the guide rail, and a drive motor and a synchronous belt driven by the motor being mounted on the frame, with the rope-pulling cylinder being fixedly connected to the synchronous belt.

2. The automatic flattening rope threading machine for paper bag sheet material according to claim 1, characterized in that: The rope feeding device includes a guide wheel, a guide platform, and an elastic plate. The guide platform is equipped with an elastic plate fixing frame. The upper end of the elastic plate is fixed on the fixing frame, and the lower end is bent and abuts against the guide platform. The elastic plate is bent into an arc shape. The flat rope cutting device is located between the guide platform and the rope pulling cylinder.

3. The automatic flattening rope threading machine for paper bag sheet material according to claim 1, characterized in that: The flat rope cutting device includes a hot cutting blade fixed on the frame and a cutting cylinder that drives the cutting blade to move up and down. The cutting blade is positioned between the guide table and the rope pulling cylinder.

4. The automatic flattening rope threading machine for paper bag sheet material according to claim 1, characterized in that: The rotating bracket is provided with a second fixing plate at the clamping end of the rope clamping cylinder, and the flat rope is arranged between the clamping end and the second fixing plate.

5. The automatic flattening rope threading machine for paper bag sheet material according to claim 4, characterized in that: The upper end of the second fixing plate is provided with a clearance groove.

6. The automatic flattening rope threading machine for paper bag sheet material according to claim 5, characterized in that: The rotating support is a hollow frame support, with part of the frame support located inside the rope guide rail and part of it located outside the rope guide rail, forming a structure in which the guide rail is located in the middle of the frame support. The rope clamping cylinder and the rope inserting cylinder are located on the outside of the support.

7. The automatic flattening rope threading machine for paper bag sheet material according to claim 1, characterized in that: The sheet material conveying device includes a conveyor motor fixed on the frame and a conveyor belt driven by the conveyor motor. A suction cylinder is fixed on the conveyor belt, and a suction nozzle is fixed to the extended end of the suction cylinder.

8. The automatic flat rope threading machine for paper bag sheet material according to claim 1, characterized in that: The frame is also equipped with a lifting mechanism, which includes a lifting bracket and a lifting cylinder. The rope pulling mechanism and the rotating mechanism are both fixed on the lifting bracket. The extended end of the lifting cylinder abuts against the lifting bracket, causing the lifting bracket to move up and down, thereby causing the rope pulling mechanism and the rotating mechanism to move up and down.

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