Automatic rope threading mechanism for lifting handle of standing pouch
By using a servo motor-driven gear and rack system and quick-release components, the cumbersome bolt disassembly and assembly problem in the self-standing bag handle rope threading mechanism is solved, enabling precise adjustment and quick replacement of the gripper position, thus improving the equipment's operating efficiency and flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN YIHAI PACKING CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-26
AI Technical Summary
The existing self-standing bag handle rope threading mechanism requires the removal of bolts when adjusting the rope length, which is cumbersome and inefficient, affecting the normal operation of the equipment.
Employing a servo motor-driven rack and pinion system and quick-release components, the gripper position can be precisely adjusted and quickly disassembled via a rotating rod and handle, simplifying operation and improving adjustment efficiency.
It enables precise adjustment and quick replacement of the gripper position, simplifies the operation steps, improves the operating efficiency and flexibility of the equipment, and adapts to the usage needs of rope ends of different specifications.
Smart Images

Figure CN224276491U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tote bag processing equipment, and in particular to an automatic rope threading mechanism for stand-up pouch handles. Background Technology
[0002] Stand-up pouches are packaging bags made of plastic with drawstrings on both sides of the opening for easy carrying. These bags are waterproof, durable, and have a high load-bearing capacity, making them popular in shopping malls, supermarkets, and gift packaging, combining practicality and aesthetics. A drawstring-threading machine is a specialized piece of equipment designed to automate the drawstring-threading process for pouches. It is widely used in the production of pouches made of plastic, paper, and other materials, significantly improving production efficiency and reducing labor costs.
[0003] The tote bag drawstring threading machine mainly consists of a feeding device, a conveying mechanism, a punching device, a drawstring sorting mechanism, a drawstring threading mechanism, and a control system. Its workflow includes: automatic bag picking, bag conveying, punching, drawstring sorting, automatic drawstring threading, and finished product collection. The entire machine achieves full automation of the drawstring threading process and is suitable for mass production of plastic and paper tote bags, significantly improving efficiency and reducing labor costs. The drawstring threading mechanism mainly consists of a mounting frame, a pneumatic drawstring clamp, and a drive system. The pneumatic drawstring clamp holds the drawstring end, and the drive system controls the drawstring clamp to thread the drawstring end through the tote bag.
[0004] Current rope threading mechanisms can accurately thread the rope end through the preset hole in the tote bag, but once the rope length needs to be adjusted, the bolts must be removed and the pneumatic rope threading clamp repositioned to ensure that the clamp can reliably hold the rope end. The cumbersome disassembly and assembly process is not only inefficient, but also affects the normal operation of the rope threading mechanism. Therefore, an automatic rope threading mechanism for stand-up pouch handles is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an automatic rope threading mechanism for stand-up pouch handles, which aims to improve the problem that the existing method of disassembling bolts and repositioning pneumatic rope threading clamps is cumbersome, inefficient, and affects the normal operation of the rope threading mechanism.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An automatic drawstring threading mechanism for a stand-up pouch handle includes a mounting frame. A sliding plate is slidably connected to the top of the mounting frame. Two movable plates are slidably connected inside the sliding plate. A movable component is mounted on the side of the movable plate. A servo motor is mounted on the top of the movable plate. A rotating plate is rotatably connected to the bottom of the movable plate. The rotating plate is fixedly connected to the output end of the servo motor. A pneumatic clamp connecting shell is fixedly connected to the side of the rotating plate. A connecting plate is rotatably connected inside the pneumatic clamp connecting shell. A quick-release component is installed inside the connecting plate. A gripper is slidably connected to the side of the connecting plate. The movable component includes a rack plate, which is fixedly connected to the side of the movable plate. A rotating rod is rotatably connected inside the sliding plate. A gear is fixedly connected to the outside of the rotating rod, and the gear meshes with the rack plate.
[0008] As a further description of the above technical solution:
[0009] A support plate is fixedly connected to the side of the movable plate. The support plate on the left side is slidably connected to the inside of the rack plate on the right side. A knob is fixedly connected to the end of the rotating rod. An electric push rod is installed on the top of the mounting frame. The sliding plate is fixedly connected to the output end of the electric push rod.
[0010] As a further description of the above technical solution:
[0011] The quick-release assembly includes a slide rod, which is slidably connected inside the connecting plate. One end of the slide rod is fixedly connected to a locking block, and the other end of the slide rod is rotatably connected to a rotating handle. A baffle is fixedly connected to the side of the connecting plate, and the slide rod is slidably connected inside the baffle. A spring is sleeved on the outer periphery of the slide rod.
[0012] As a further description of the above technical solution:
[0013] A docking block is fixedly connected to the side of the gripper. The docking block is slidably connected inside the connecting plate. A slot is provided on the side of the docking block, and the slot engages with the gripper.
[0014] As a further description of the above technical solution:
[0015] The rotary handle has a limiting groove inside, and the slide rod is rotatably connected inside the limiting groove.
[0016] As a further description of the above technical solution:
[0017] A positioning block is fixedly connected to the side of the docking block, and a positioning groove is provided inside the connecting plate. The positioning block is slidably connected inside the positioning groove.
[0018] As a further description of the above technical solution:
[0019] A guide block is fixedly connected to the side of the movable plate, and a guide groove is provided inside the sliding plate. The guide block is slidably connected inside the guide groove.
[0020] As a further description of the above technical solution:
[0021] A sliding plate is fixedly connected to the side of the rack plate, and a protective plate is fixedly connected to the side of the sliding plate. A groove is provided on the side of the protective plate, and the sliding plate is slidably connected inside the groove.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the gear is controlled by the knob and the rotating rod to move the rack plate, which in turn moves the pneumatic clamp connecting shell, thereby achieving precise adjustment of the clamp position. This structure can complete the clamp position adjustment without disassembling the bolts, simplifying the operation steps, significantly improving the adjustment efficiency, avoiding the cumbersome problems caused by frequent disassembly and assembly, and helping to ensure the continuous and efficient operation of the rope threading mechanism.
[0024] 2. In this utility model, a structural design of rotating handle combined with slide bar, locking block and spring mechanism is adopted to realize quick disassembly and assembly of gripper. Users only need to rotate the handle to release and replace the gripper. The operation is intuitive and simple, eliminating the tool disassembly and assembly steps, significantly improving the work efficiency of changing gripper, adapting to the use needs of rope ends of different specifications, and enhancing the flexibility and practicality of the equipment. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of an automatic rope-threading mechanism for a stand-up pouch handle proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the sliding plate of an automatic rope-threading mechanism for a stand-up pouch handle proposed in this utility model.
[0027] Figure 3 This is a schematic diagram of the rotating rod of an automatic rope-threading mechanism for a stand-up pouch handle proposed in this utility model;
[0028] Figure 4 This is a schematic diagram of the protective plate of the automatic rope threading mechanism for a stand-up pouch handle proposed in this utility model;
[0029] Figure 5 This is a schematic diagram of the slide bar of the automatic rope threading mechanism for a stand-up pouch handle proposed in this utility model;
[0030] Figure 6This is a schematic diagram of the connecting block of an automatic rope threading mechanism for a stand-up pouch handle proposed in this utility model.
[0031] Legend:
[0032] 1. Mounting bracket; 2. Sliding plate; 3. Electric push rod; 4. Moving plate; 5. Servo motor; 6. Rotating plate; 7. Pneumatic clamp connecting shell; 8. Connecting plate; 9. Gripper; 10. Rack plate; 11. Rotating rod; 12. Gear; 13. Support plate; 14. Knob; 15. Guide block; 16. Guide groove; 17. Slide plate; 18. Protective plate; 19. Slide groove; 20. Slide rod; 21. Locking block; 22. Rotating handle; 23. Baffle; 24. Spring; 25. Connecting block; 26. Locking groove; 27. Limiting groove; 28. Positioning groove; 29. Positioning block. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Reference Figure 1 - Figure 4This utility model provides an embodiment of an automatic rope-threading mechanism for a stand-up pouch handle, comprising a mounting frame 1. The mounting frame 1 is used to install the rope-threading mechanism to a subsequent position of the rope-managing mechanism. A sliding plate 2 is slidably connected to the top of the mounting frame 1 on the side of the conveying mechanism. Two movable plates 4 are slidably connected inside the sliding plate 2. Movable components are mounted on the sides of the movable plates 4. A servo motor 5 is mounted on the top of the movable plates 4. A rotating plate 6 is rotatably connected to the bottom of the movable plates 4. The rotating plate 6 is fixedly connected to the output end of the servo motor 5. A [missing information - likely a component or component] is fixedly connected to the side of the rotating plate 6. The pneumatic clamp connecting shell 7 has a connecting plate 8 rotatably connected inside it. A quick-release assembly is installed inside the connecting plate 8, and a gripper 9 is slidably connected to the side of the connecting plate 8. The moving assembly includes a rack plate 10, which is fixedly connected to the side of the moving plate 4. Moving the rack plate 10 causes the moving plate 4 to move. A rotating rod 11 is rotatably connected inside the sliding plate 2, and a gear 12 is fixedly connected to the outside of the rotating rod 11. The gear 12 meshes with the rack plate 10. The rotating rod 11 rotates the gear 12, controlling the movement of the rack plate 10. A support plate 13 is fixedly connected to the side of the movable plate 4. The left support plate 13 is slidably connected to the inside of the right rack plate 10. The support plate 13 slides inside the rack plate 10 to support the movement trajectory of the movable plate 4. A knob 14 is fixedly connected to the end of the rotating rod 11. The rotating rod 11 is rotated by using the knob 14. An electric push rod 3 is installed on the top of the mounting bracket 1. The sliding plate 2 is fixedly connected to the output end of the electric push rod 3. The electric push rod 3 controls the sliding plate 2 to move back and forth.
[0035] Reference Figure 1 , Figure 5 and Figure 6 The quick-release assembly includes a slide rod 20, which is slidably connected inside the connecting plate 8. The slide rod 20 is used to connect other structures. One end of the slide rod 20 is fixedly connected to a locking block 21, and the other end is rotatably connected to a rotating handle 22. Rotating the rotating handle 22 causes the slide rod 20 to work in conjunction with the locking block 21. A baffle 23 is fixedly connected to the side of the connecting plate 8, and the slide rod 20 is slidably connected inside the baffle 23. A spring 24 is fitted around the outer periphery of the slide rod 20. The pressure generated by the baffle 23 and the spring 24 causes the locking block 21 to move inward and engage with the slot 26. A mating block 25 is fixedly connected to the side of the gripper 9, and the mating block 25 is slidably connected inside the connecting plate 8. A slot 26 is formed on the side of the mating block 25, and the locking block 21 engages with the slot 26. The locking block 21 moves inward under pressure and engages with the slot 26. The rotating handle 22 has a limiting groove 27 inside, and the slide rod 20 is rotatably connected inside the limiting groove 27. By setting the limiting groove 27, the rotation trajectory of the rotating handle 22 is limited.
[0036] Reference Figure 3 - Figure 6A positioning block 29 is fixedly connected to the side of the docking block 25. A positioning groove 28 is provided inside the connecting plate 8. The positioning block 29 is slidably connected inside the positioning groove 28. The installation position of the gripper 9 is fixed by the cooperation of the positioning block 29 and the positioning groove 28. A guide block 15 is fixedly connected to the side of the moving plate 4. A guide groove 16 is provided inside the sliding plate 2. The guide block 15 is slidably connected inside the guide groove 16. The moving plate 4 is supported by the guide block 15 and the guide groove 16. A sliding plate 17 is fixedly connected to the side of the rack plate 10. A protective plate 18 is fixedly connected to the side of the sliding plate 2. The protective plate 18 protects the internal structure. A sliding groove 19 is provided on the side of the protective plate 18. The sliding plate 17 is slidably connected inside the sliding groove 19. The moving process of the rack plate 10 is defined by the cooperation of the sliding plate 17 and the sliding groove 19.
[0037] Working principle: Before the equipment is put into operation, the gear 12 is rotated by the knob 14 and the rotating rod 11. The rotating gear 12 pushes the rack plate 10 to move. The moving rack plate 10 moves the pneumatic clamp connecting shell 7 through the moving plate 4 and the rotating plate 6, adjusting the distance of the clamp 9 so that the position of the clamp 9 matches the rope end of the rope threading, thereby improving the working efficiency of adjusting the position of the pneumatic clamp connecting shell 7 and avoiding affecting the normal operation of the rope threading mechanism.
[0038] Rotate the handle 22, and the slide bar 20 will move the locking block 21 outward, causing the locking block 21 to disengage from the slot 26 of the docking block 25. This allows the currently used gripper 9 to be removed. Place the gripper 9 to be replaced into the connecting plate 8. Rotate the handle 22 in the opposite direction, and with the help of the pressure applied to the locking block 21 by the spring 24, the locking block 21 will move inward and engage with the slot 26. This enables quick disassembly and assembly of the gripper 9 and improves the efficiency of replacing the gripper 9.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic drawstring threading mechanism for a stand-up pouch handle, comprising a mounting frame (1), characterized in that: The top of the mounting bracket (1) is slidably connected to a sliding plate (2), and two movable plates (4) are slidably connected inside the sliding plate (2). Movable components are installed on the side of the movable plate (4), a servo motor (5) is installed on the top of the movable plate (4), and a rotating plate (6) is rotatably connected to the bottom of the movable plate (4). The rotating plate (6) is fixedly connected to the output end of the servo motor (5). A pneumatic clamp connecting shell (7) is fixedly connected to the side of the rotating plate (6), and a connecting plate (8) is rotatably connected inside the pneumatic clamp connecting shell (7). A quick-release component is installed inside the connecting plate (8), and a clamp (9) is slidably connected to the side of the connecting plate (8). The moving component includes a rack plate (10), which is fixedly connected to the side of the moving plate (4). A rotating rod (11) is rotatably connected inside the sliding plate (2), and a gear (12) is fixedly connected to the outside of the rotating rod (11). The gear (12) meshes with the rack plate (10).
2. The automatic rope threading mechanism for a stand-up pouch handle according to claim 1, characterized in that: The side of the movable plate (4) is fixedly connected to a support plate (13), the left support plate (13) is slidably connected to the inside of the right rack plate (10), the end of the rotating rod (11) is fixedly connected to a knob (14), the top of the mounting bracket (1) is equipped with an electric push rod (3), and the sliding plate (2) is fixedly connected to the output end of the electric push rod (3).
3. The automatic drawstring threading mechanism for a stand-up pouch handle according to claim 1, characterized in that: The quick-release assembly includes a slide rod (20), which is slidably connected inside the connecting plate (8). One end of the slide rod (20) is fixedly connected to a locking block (21), and the other end of the slide rod (20) is rotatably connected to a rotating handle (22). A baffle (23) is fixedly connected to the side of the connecting plate (8), and the slide rod (20) is slidably connected inside the baffle (23). A spring (24) is sleeved on the outer periphery of the slide rod (20).
4. The automatic rope threading mechanism for a stand-up pouch handle according to claim 3, characterized in that: The gripper (9) is fixedly connected to a docking block (25) on its side. The docking block (25) is slidably connected inside the connecting plate (8). The docking block (25) has a slot (26) on its side. The slot (21) and the slot (26) engage with each other.
5. The automatic drawstring threading mechanism for a stand-up pouch handle according to claim 3, characterized in that: The rotating handle (22) has a limiting groove (27) inside, and the slide rod (20) is rotatably connected inside the limiting groove (27).
6. The automatic rope threading mechanism for a stand-up pouch handle according to claim 4, characterized in that: The side of the docking block (25) is fixedly connected to a positioning block (29), and the inside of the connecting plate (8) is provided with a positioning groove (28). The positioning block (29) is slidably connected inside the positioning groove (28).
7. The automatic rope threading mechanism for a stand-up pouch handle according to claim 1, characterized in that: The side of the movable plate (4) is fixedly connected to a guide block (15), and the inside of the sliding plate (2) is provided with a guide groove (16). The guide block (15) is slidably connected inside the guide groove (16).
8. The automatic rope threading mechanism for a stand-up pouch handle according to claim 1, characterized in that: A slide plate (17) is fixedly connected to the side of the rack plate (10), and a protective plate (18) is fixedly connected to the side of the sliding plate (2). A groove (19) is provided on the side of the protective plate (18), and the slide plate (17) is slidably connected inside the groove (19).