Pressing buckle device for mounting handle of plastic gift bag

By designing a snap-fit ​​device that includes a cylinder, a damping spring, and a motor drive, the problem of plastic deformation caused by over-embedding during handle installation was solved, achieving safe and precise handle installation, and improving production efficiency and the performance of gift bags.

CN224256213UActive Publication Date: 2026-05-19WENZHOU ZHAOXI PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU ZHAOXI PACKAGING CO LTD
Filing Date
2025-06-23
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In the existing technology, excessive pressure during the installation of plastic gift bag handles may cause the handle to be overly embedded in the gift bag, resulting in excessive deformation of the plastic around the handle, affecting the bonding strength, making the handle easy to loosen or fall off during use, and reducing the performance and durability of the gift bag.

Method used

A snap-fit ​​device for installing handles on plastic gift bags was designed. It uses a cylinder to push an extrusion plate to fix the gift bag, and combines a damping spring to adjust the pressure. The motor drives the rotating plate and the inclined rod to convert the motion into linear motion, ensuring the stability and accuracy of power transmission and avoiding damage to the gift bag due to excessive pressure.

Benefits of technology

It achieves safe and precise installation of handles, improves the adaptability and production efficiency of the device, ensures the bonding strength and stability of gift bags, and reduces labor costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of plastic gift bags, and discloses a pressing buckle device for mounting a handle of a plastic gift bag, which comprises a processing table, a connecting frame is slidably connected to the inner wall of the bottom of the rear end of the processing table, a two-way threaded rod is rotatably connected to the interior of the connecting frame, and nut pairs are in threaded connection to the outer rings of the left side and the right side of the two-way threaded rod. A movable plate is fixedly connected to the front end of the nut pair, fixing plates are fixedly connected to the upper end and the lower end of the movable plate, and an air cylinder is fixedly connected to the bottom of the top fixing plate. When the extrusion disc moves along with the top sliding disc to be close to the handle of the plastic gift bag, the damping spring can play a key role if the extrusion disc is subjected to resistance generated by the surface condition of the gift bag. One end of the damping spring is fixedly connected with the groove box, and the other end of the damping spring is connected with the fixing disc, so that the extrusion disc can compress the damping spring when subjected to resistance, the position is automatically adjusted according to the resistance, and damage to the plastic gift bag due to excessive pressure is effectively avoided.
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Description

Technical Field

[0001] This utility model relates to the field of plastic gift bag technology, specifically a snap fastener device for installing handles on plastic gift bags. Background Technology

[0002] Plastic gift bags are mainly made of polymers such as polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC). With the development of materials science, various high-performance polymer materials have been developed. For example, by improving the polymerization process, polyethylene with higher strength, toughness, and transparency has been produced, making gift bags more durable and better able to display gifts.

[0003] In the production of plastic gift bags, traditional handle installation methods, such as manual pressing, are inefficient. With the increasing market demand for plastic gift bags, companies need a device that can quickly and efficiently install handles to meet the requirements of large-scale production. Clamping devices, through automated or semi-automated design, can achieve rapid clamping, greatly improving production efficiency and reducing labor costs.

[0004] Excessive pressure may cause the handle to be overly embedded in the gift bag during installation, resulting in excessive deformation of the plastic around the handle. This affects the bonding strength between the handle and the gift bag, making the handle prone to loosening or falling off during subsequent use, thus reducing the performance and durability of the gift bag.

[0005] To address the aforementioned issues, a snap-on device for installing handles on plastic gift bags is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a snap-fit ​​device for installing plastic gift bag handles, which solves the problem in the background art that excessive pressure may cause the handle to be overly embedded in the gift bag during installation, resulting in excessive deformation of the plastic around the handle, affecting the bonding strength between the handle and the gift bag, making the handle easy to loosen or fall off during subsequent use, and reducing the performance and durability of the gift bag.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a snap-fit ​​device for installing handles on plastic gift bags, comprising a processing table, a connecting frame slidably connected to the inner wall of the bottom rear end of the processing table, a bidirectional threaded rod rotatably connected inside the connecting frame, and nut pairs threadedly connected to the outer rings of both sides of the bidirectional threaded rod, a movable plate fixedly connected to the front end of the nut pairs, and fixed plates fixedly connected to the upper and lower ends of the movable plate, a cylinder fixedly connected to the bottom of the top fixed plate, and a pressing plate fixedly connected to the output end of the cylinder, sliding discs provided at the upper and lower ends of the front end of the processing table, a fixed column fixedly connected to the bottom of the top sliding disc, a connecting plate fixedly connected to the bottom of the fixed column, a groove box fixedly connected to the bottom of the connecting plate, a sliding plate slidably connected inside the groove box, a sliding column slidably connected to the bottom of the sliding plate, a damping spring sleeved on the outer ring of the sliding column, and the damping spring fixedly connected to the groove box, a fixed disc fixedly connected to the other end of the damping spring, a pressing disc fixedly connected to the bottom of the fixed disc, and a driving assembly provided at the front end of the processing table.

[0008] By adopting the above technical solution, the extrusion plate is moved by the cylinder, and the plastic gift bag is fixed by the extrusion plate and the fixing plate. The bottom of the extrusion plate has a friction pad to prevent slippage.

[0009] As a further description of the above technical solution: the drive component includes a support column, which is fixedly connected to the front end of the processing table, and a grooved plate is fixedly connected to the front end of the support column.

[0010] By adopting the above technical solution, the groove plate is fixedly supported by the support column.

[0011] As a further description of the above technical solution: a motor is fixedly connected to the rear end of the grooved plate, and evenly distributed guide blocks are fixedly connected to the rear end of the grooved plate.

[0012] By adopting the above technical solution, a motor is located at the rear end of the grooved plate.

[0013] As a further description of the above technical solution: a rotating plate is fixedly connected to the output end of the motor, and diagonal rods are rotatably connected to both ends of the rotating plate.

[0014] By adopting the above technical solution, the rotating plate and the inclined rod are rotated by a motor.

[0015] As a further description of the above technical solution: a movable disk is fixedly connected to one end of the inclined rod, and the movable disk is fixedly connected to the sliding disk.

[0016] By adopting the above technical solution, the diagonal rod is rotated, which drives the moving disk to move.

[0017] As a further description of the above technical solution: a movable block is slidably connected to the outer wall of the guide block, and the movable block is fixedly connected to the movable disk.

[0018] By adopting the above technical solution, the moving block moves on the outer wall of the guide block, thereby driving the moving disk to move.

[0019] As a further description of the above technical solution: a magnet is fixedly connected to the top of the bottom sliding disk, and a mounting base is fixedly connected to the top of the magnet.

[0020] By adopting the above technical solution, the plastic handle is placed on the mounting base, making it easy to squeeze.

[0021] As a further description of the above technical solution: the bottom of the sliding disk is fixedly connected to a fixing frame, and the fixing frame is fixedly connected to the connecting frame.

[0022] By adopting the above technical solution, the sliding plate moves, driving the connecting frame to move, which facilitates the snap-fitting.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1. This utility model provides a snap-fit ​​device for installing plastic gift bag handles. When the squeezing disc moves close to the plastic gift bag handle along with the top sliding disc, a damping spring plays a crucial role if it encounters resistance due to the surface condition of the gift bag. One end of the damping spring is fixedly connected to the groove box, and the other end is connected to the fixed disc, allowing the squeezing disc to compress the damping spring when it encounters resistance. This automatically adjusts the position according to the magnitude of the resistance, effectively preventing damage to the plastic gift bag due to excessive pressure, ensuring the safety of the device during the snap-fit ​​process and its wide adaptability to gift bags with different conditions.

[0025] 2. The present invention provides a snap-fit ​​device for installing plastic gift bag handles. First, a motor drives a rotating plate to rotate in a circular motion. The ingenious rotational connection design between the rotating plate and the inclined rod efficiently converts the circular motion into the linear motion of the moving plate. The moving block slides precisely on the outer wall of the guide block, ensuring that the moving plate and the sliding plate fixedly connected to it can only move along the direction defined by the guide block. The entire power transmission process is highly stable and accurate, and can stably and reliably drive the connecting frame and related components to move along the preset path, thereby ensuring the accuracy and efficiency of the snap-fit ​​operation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the motor of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the bidirectional threaded rod of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the magnet of this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the damping spring of this utility model.

[0031] In the diagram: 1. Processing table; 2. Support column; 3. Groove plate; 4. Connecting frame; 5. Two-way threaded rod; 6. Motor; 7. Rotating plate; 8. Diagonal bar; 9. Moving plate; 10. Guide block; 11. Moving block; 12. Sliding plate; 13. Nut pair; 14. Moving plate; 15. Fixed plate; 16. Cylinder; 17. Extrusion plate; 18. Magnet; 19. Mounting base; 20. Fixed frame; 21. Fixed column; 22. Connecting plate; 23. Groove box; 24. Sliding plate; 25. Damping spring; 26. Sliding column; 27. Extrusion plate; 28. Fixed plate. Detailed Implementation

[0032] 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.

[0033] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0034] Reference Figures 1-5 This utility model discloses a snap-fit ​​device for installing handles on plastic gift bags, comprising a processing table 1. A connecting frame 4 is slidably connected to the inner wall of the bottom rear end of the processing table 1. A bidirectional threaded rod 5 is rotatably connected inside the connecting frame 4. Nut pairs 13 are threadedly connected to the outer rings of the left and right sides of the bidirectional threaded rod 5. A movable plate 14 is fixedly connected to the front end of the nut pairs 13. Fixed plates 15 are fixedly connected to both the upper and lower ends of the movable plate 14. A cylinder 16 is fixedly connected to the bottom of the top fixed plate 15. A pressing plate 17 is fixedly connected to the output end of the cylinder 16.

[0035] Drive component installation: A drive component is installed at the front end of the processing table 1. The drive component includes a support column 2, which is fixedly connected to the front end of the processing table 1. A grooved plate 3 is fixedly connected to the front end of the support column 2. A motor 6 is fixedly connected to the rear end of the grooved plate 3, and evenly distributed guide blocks 10 are also fixedly connected thereto. A rotating plate 7 is fixedly connected to the output end of the motor 6, and diagonal rods 8 are rotatably connected to both ends of the rotating plate 7. A movable disk 9 is fixedly connected to one end of the diagonal rod 8, and the movable disk 9 is fixedly connected to a sliding disk 12. A movable block 11 is slidably connected to the outer wall of the guide block 10, and the movable block 11 is fixedly connected to the movable disk 9.

[0036] Installation of sliding plate components: Sliding plates 12 are installed at both the top and bottom of the front end of the processing table 1. A fixed post 21 is fixedly connected to the bottom of the top sliding plate 12. A connecting plate 22 is fixedly connected to the bottom of the fixed post 21, and a groove box 23 is fixedly connected to the bottom of the connecting plate 22. A sliding plate 24 is slidably connected inside the groove box 23. A sliding post 26 is slidably connected to the bottom of the sliding plate 24. A damping spring 25 is fitted around the outer ring of the sliding post 26. One end of the damping spring 25 is fixedly connected to the groove box 23, and the other end is fixedly connected to a fixed plate 28. A pressing plate 27 is fixedly connected to the bottom of the fixed plate 28. A magnet 18 is fixedly connected to the top of the bottom sliding plate 12. A mounting base 19 is fixedly connected to the top of the magnet 18. A fixing frame 20 is fixedly connected to the bottom of the bottom sliding plate 12, and the fixing frame 20 is fixedly connected to the connecting frame 4.

[0037] Operating Procedure: At the start of installation, use magnet 18 to replace the mounting base 19, selecting a suitable base to fit different handle sizes. Next, place the plastic gift bag at the bottom of the extrusion plate 17 and activate cylinder 16. The output end of cylinder 16 pushes the extrusion plate 17 downwards, compressing and fixing the plastic gift bag to ensure stability during processing. Then, rotate the bidirectional threaded rod 5. As the bidirectional threaded rod 5 rotates, the nut pairs 13 on its left and right sides move axially along the bidirectional threaded rod 5 under the action of the threads. Since the front end of the nut pair 13 is fixedly connected to the moving plate 14, the moving plate 14 moves with the movement of the nut pair 13, thus opening the plastic gift bag and providing suitable operating space for subsequent handle installation. Finally, place the handle on the mounting base 19.

[0038] Drive and snap-fit ​​process: When motor 6 is powered on and started, the output shaft of motor 6 drives rotating plate 7 to rotate in a circular motion. The rotation of rotating plate 7 causes the inclined rod 8, which is rotatably connected to its two ends, to swing. The swing of inclined rod 8 is converted into linear motion of moving plate 9. Because moving plate 9 is fixedly connected to sliding plate 12, the linear motion of moving plate 9 drives sliding plate 12 to move synchronously. In this process, guide block 10 and moving block 11 play a key guiding role. Moving block 11 slides on the outer wall of guide block 10, ensuring that moving plate 9 and sliding plate 12 can only move in the direction defined by guide block 10, thus making the entire power transmission process stable and accurate. During the movement of top sliding plate 12, it drives squeezing plate 27 to approach the plastic gift bag handle. If squeezing plate 27 encounters resistance such as unevenness of the gift bag surface during the approach to the handle, damping spring 25 will play its role. One end of the damping spring 25 is fixedly connected to the groove box 23, and the other end is connected to the fixed plate 28. When the squeezing plate 27 is resisted, the squeezing plate 27 will compress the damping spring 25, so that the squeezing plate 27 can automatically adjust its position according to the resistance, avoiding damage to the plastic gift bag due to excessive pressure, and realizing safe and accurate buckle installation of the handle.

[0039] Working principle: The mounting base 19 is replaced by magnet 18, and then the plastic bag is fixed to the bottom of the extrusion plate 17. The plastic is squeezed and fixed by cylinder 16. Rotating the bidirectional threaded rod 5 drives the nut pair 13 to move, causing the moving plate 14 to separate from the plastic bag. The handle is placed on the mounting base 19. When the motor 6 is powered on and started, the output shaft of the motor 6 drives the rotating plate 7 to rotate in a circle. The rotation of the rotating plate 7 causes the inclined rod 8, which is rotatably connected to its two ends, to swing. The swing of the inclined rod 8 is converted into the linear motion of the moving plate 9. Because the moving plate 9 is fixedly connected to the sliding plate 12, the linear motion of the moving plate 9 drives the sliding plate 12 to move synchronously. In this process, guide block 10 and moving block 11 play a crucial guiding role. Moving block 11 slides on the outer wall of guide block 10, ensuring that moving disc 9 and sliding disc 12 can only move along the direction defined by guide block 10, thus making the entire power transmission process stable and accurate. At the same time, it drives the connecting frame 4 to move, and the top sliding disc 12 moves. When the squeezing disc 27 moves with the top sliding disc 12 towards the plastic gift bag handle, if it encounters resistance such as unevenness of the gift bag surface, the damping spring 25 comes into play. One end of the damping spring 25 is fixedly connected to the groove box 23, and the other end is connected to the fixed disc 28. When the squeezing disc 27 encounters resistance, the squeezing disc 27 will compress the damping spring 25, so that the squeezing disc 27 can automatically adjust its position according to the amount of resistance, avoiding damage to the plastic gift bag due to excessive pressure, and ensuring the safety and adaptability of the device in the buckling process.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A snap-on device for installing handles on plastic gift bags, comprising a processing table (1), characterized in that: A connecting frame (4) is slidably connected to the inner wall of the bottom rear end of the processing table (1). A bidirectional threaded rod (5) is rotatably connected inside the connecting frame (4). Nut pairs (13) are threadedly connected to the outer rings of the left and right sides of the bidirectional threaded rod (5). A moving plate (14) is fixedly connected to the front end of the nut pair (13). A fixed plate (15) is fixedly connected to both the upper and lower ends of the moving plate (14). A cylinder (16) is fixedly connected to the bottom of the top fixed plate (15). A pressing plate (17) is fixedly connected to the output end of the cylinder (16). A sliding disk (12) is provided at both the upper and lower ends of the front end of the processing table (1). The bottom of the top sliding disk (12) is fixedly connected to the bottom. A fixed column (21) is connected, and a connecting plate (22) is fixedly connected to the bottom of the fixed column (21). A groove box (23) is fixedly connected to the bottom of the connecting plate (22). A sliding plate (24) is slidably connected inside the groove box (23). A sliding column (26) is slidably connected to the bottom of the sliding plate (24). A damping spring (25) is sleeved on the outer ring of the sliding column (26), and the damping spring (25) is fixedly connected to the groove box (23). A fixed disk (28) is fixedly connected to the other end of the damping spring (25). An extrusion disk (27) is fixedly connected to the bottom of the fixed disk (28). A drive assembly is provided at the front end of the processing table (1).

2. The snap-on device for installing a plastic gift bag handle according to claim 1, characterized in that: The drive assembly includes a support column (2), which is fixedly connected to the front end of the processing table (1), and a grooved plate (3) is fixedly connected to the front end of the support column (2).

3. The snap-on device for installing a plastic gift bag handle according to claim 2, characterized in that: The rear end of the grooved plate (3) is fixedly connected to a motor (6), and the rear end of the grooved plate (3) is fixedly connected to a uniformly distributed guide block (10).

4. The snap-on device for installing a plastic gift bag handle according to claim 3, characterized in that: The output end of the motor (6) is fixedly connected to a rotating plate (7), and both ends of the rotating plate (7) are rotatably connected to diagonal rods (8).

5. A snap-on device for installing a plastic gift bag handle according to claim 4, characterized in that: One end of the inclined rod (8) is fixedly connected to a movable disk (9), and the movable disk (9) is fixedly connected to the sliding disk (12).

6. The snap-on device for installing a plastic gift bag handle according to claim 3, characterized in that: The guide block (10) has a sliding connection to a movable block (11) on its outer wall, and the movable block (11) is fixedly connected to the movable disk (9).

7. The snap-on device for installing a plastic gift bag handle according to claim 1, characterized in that: A magnet (18) is fixedly connected to the top of the bottom sliding disk (12), and a mounting base (19) is fixedly connected to the top of the magnet (18).

8. The snap-on device for installing a plastic gift bag handle according to claim 1, characterized in that: The bottom of the sliding disk (12) is fixedly connected to a fixed frame (20), and the fixed frame (20) is fixedly connected to the connecting frame (4).