Strong seal plastic packaging closure device
By using a cylinder-driven lifting and rotating disc structure, combined with a limiting groove and a limiting rod design, the problem of existing devices being unable to adapt to packaging containers of different sizes is solved, achieving efficient and low-cost sealing and high-precision fixing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QUANZHOU HONGYUAN PLASTIC PROD CO LTD
- Filing Date
- 2025-11-06
- Publication Date
- 2026-07-28
AI Technical Summary
Existing strong-seal plastic packaging closure devices cannot adapt to packaging containers of different sizes, resulting in limited applicability, insufficient flexibility, reduced sealing reliability, low production efficiency, and high replacement costs.
The structure employs a cylinder-driven lifting and rotating disc, combined with a limiting groove, an extrusion block, and a limiting rod. The rotating disc is driven by a second cylinder, which in turn drives the extrusion block in conjunction with the limiting groove. The extrusion block cooperates with the fixed disc to achieve stable fixation of plastic bottles of different sizes. The design of the limiting rod and connecting column enables precise guidance and self-lubrication, reducing frictional losses.
It achieves high-precision fixing of plastic bottles of different sizes, reduces equipment costs, improves the flexibility and reliability of the production line, reduces friction loss and noise, and improves production efficiency and sealing effect.
Smart Images
Figure CN224564248U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of strong-sealing plastic closure technology, and in particular to a strong-sealing plastic packaging closure device. Background Technology
[0002] Strong-sealing plastic packaging closure devices are mechanical devices that achieve tight sealing of plastic packaging through physical structure or technology, preventing external intrusion while also allowing for easy opening. They are widely used in food, pharmaceutical, and chemical industries, and have advantages such as high sealing performance, high automation efficiency, wide applicability, reliable structure, and practical additional functions. They are a key technical component of modern industrial packaging.
[0003] Strong-sealing plastic packaging closure devices are generally composed of a fixed plate, common components, and a capping head. They use mechanical force or energy to tightly close the packaging interface through physical interlocking (clamps, threads, compression) or energy fusion (heat sealing, ultrasonic) principles. Depending on the material and scenario requirements, a single or combined sealing method can be selected to achieve a highly efficient and reliable sealing effect.
[0004] Existing strong-seal plastic packaging closure devices suffer from several problems. Firstly, they are unable to adapt to different sizes for secure fixing, limiting their applicability and flexibility. They can only accommodate single or a few packaging container sizes, requiring complete device replacement for product upgrades or packaging size adjustments, increasing modification costs. Furthermore, they are difficult to switch quickly on flexible production lines, resulting in long debugging times and low efficiency. Secondly, sealing reliability decreases; size mismatches can lead to leaks due to incomplete mechanical engagement, insufficient compression, or structural deformation. The fixing structure also struggles to dynamically adjust pressure according to size, affecting sealing performance. Thirdly, production efficiency decreases and costs increase, requiring manual sorting and packaging or manual adjustment of device parameters, increasing labor costs and the risk of misoperation. Additionally, multiple sets of specialized devices need to be purchased, resulting in idle equipment and wasted resources. Therefore, a strong-seal plastic packaging closure device is proposed to address these issues. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a strong-sealing plastic packaging closure device, which aims to improve the problem that the existing technology cannot adapt to different sizes for fixing.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A strong-sealing plastic packaging closure device includes a sealing closure device, a cylinder one fixedly connected to the top of the sealing closure device, a lifting plate fixedly connected to the drive end of the cylinder one, a cylinder two rotatably connected to the top of the lifting plate, a rotating plate fixedly connected to the drive end of the cylinder two, a plurality of limiting grooves opened inside the rotating plate, a squeezing block slidably connected inside the limiting grooves, limiting plates fixedly connected to both sides of the lifting plate, and an automatic component fixedly connected inside the limiting plate. As a further description of the above technical solution: The automatic component includes a connecting column, the outer side of which is fixedly connected to the inside of the limiting disc, and a storage slot is provided inside the connecting column, with multiple ball bearings rotatably connected inside the storage slot. As a further description of the above technical solution: The top of the lifting plate is fixedly connected to a fixed plate, and the fixed plate has multiple sliding grooves inside. As a further description of the above technical solution: The outer side of the fixed disk is slidably connected to the inside of the sliding groove, and the bottom of the fixed disk is slidably connected to the top of the fixed disk; As a further description of the above technical solution: The feed inlet is fixedly connected to the inside of the connecting column, and a piston is slidably connected to the inside of the feed inlet; As a further description of the above technical solution: Two limiting rods are fixedly connected to the top of the sealing and closing device, and the inner side of the connecting column is slidably connected to the outer side of the limiting rods; As a further description of the above technical solution: The outer side of the ball is rotatably connected to the outer side of the limiting rod, and a bracket is fixedly connected to the top of the sealing and closing device. As a further description of the above technical solution: The top of the bracket is fixedly connected to a housing, and a sealer is fixedly connected inside the housing.
[0007] This utility model has the following beneficial effects: 1. In this utility model, the rotating disk is driven by the second cylinder, the rotating disk cooperates with the limiting groove, the limiting groove drives the extrusion block, the extrusion block cooperates with the fixed disk, and the fixed disk cooperates with the sliding groove, thereby realizing the fixation of the plastic bottle. It has the advantages of compact structure, high fixing accuracy, fast action, strong stability, low maintenance cost and good linkage with subsequent processes. It can take into account efficiency, accuracy, stability and flexibility, reduce equipment cost and improve the reliability of production line.
[0008] 2. In this utility model, the limiting rod cooperates with the limiting plate, the limiting plate cooperates with the connecting column, the connecting column cooperates with the storage groove, and the storage groove cooperates with the ball bearing. This not only prevents the position of the lifting plate from shifting when it rises, but also reduces the friction between parts. In the motion control of the lifting plate, it has the advantages of precise guidance, self-lubrication and friction reduction, low energy consumption and low noise, compact structure and strong adaptability, and low failure risk. It solves the problems of insufficient guiding accuracy and high friction loss of traditional lifting mechanisms, and achieves a balance between performance and cost. Attached Figure Description
[0009] Figure 1 This is a three-dimensional schematic diagram of the strong-sealing plastic packaging closure device proposed in this utility model; Figure 2 This is a schematic diagram of the outer shell structure of the strong-sealing plastic packaging closure device proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0010] Legend: 1. Sealing and closing device; 2. Support; 3. Housing; 4. Sealer; 5. Cylinder 1; 6. Lifting plate; 7. Cylinder 2; 8. Rotating plate; 9. Limiting groove; 10. Fixed plate; 11. Sliding groove; 12. Extrusion block; 13. Limiting rod; 14. Limiting plate; 15. Connecting column; 16. Feed inlet; 17. Ball bearing; 18. Piston; 19. Storage tank. Detailed Implementation
[0011] 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.
[0012] Reference Figures 1 to 3 The present invention provides an embodiment of a strong-sealing plastic packaging closure device, comprising a sealing closure device 1, a bracket 2 fixedly connected to the top of the sealing closure device 1, the bracket 2 adopting a high-strength structural design to provide stable support for the upper components and ensure the stability of the overall structure during the sealing process, and an outer shell 3 fixedly connected to the top of the bracket 2, the outer shell 3 sealing and protecting the internal core components such as the sealer 4, preventing dust and debris from entering and affecting the sealing accuracy, and providing safety protection for the operator.
[0013] The sealing device 4 is fixedly connected inside the outer shell 3. The sealing device 4 can perform sealing operations such as heat sealing and pressing of the bottle mouth by precisely controlling the temperature or adjusting the pressure according to different plastic bottle materials and sealing requirements, ensuring a tight and reliable sealing effect. The top of the sealing and closing device 1 is fixedly connected to two limit rods 13. The two limit rods 13 are vertically distributed to provide rigid guidance for the up and down movement of the lifting plate 6, preventing it from shifting laterally during the rise and ensuring the accuracy of the sealing position. The top of the sealing and closing device 1 is fixedly connected to a cylinder 5. The cylinder 5 serves as a power source and can precisely control the lifting speed and stroke of the lifting plate 6 through stable air pressure, so that it can smoothly drive the plastic bottle into the sealing device 4.
[0014] The lifting plate 6 is fixedly connected to the drive end of cylinder 5. The lifting plate 6 serves as a support carrier and is synchronously raised and lowered under the drive of cylinder 5. Its flatness is precisely machined to ensure that the fixed plate 10 and the plastic bottle remain horizontal after placement. The fixed plate 10 is fixedly connected to the top of the lifting plate 6. The upper surface of the fixed plate 10 is the positioning reference surface for the plastic bottle. Its size is adapted to the common bottle bottom, providing a stable initial placement position for easy subsequent fixing operations. The fixed plate 10 has multiple sliding grooves 11 inside. The multiple sliding grooves 11 are radially distributed with the center of the fixed plate 10 as the reference, providing a precise guide path for the radial sliding of the extrusion block 12, ensuring that the extrusion action is synchronous and smooth. The top of the lifting plate 6 is rotatably connected to cylinder 7. Cylinder 7 drives the rotating plate 8 by rotation. Its rotation angle and speed can be adjusted by the control device to adapt to the fixing force and stroke required for different sized plastic bottles.
[0015] A rotating disk 8 is fixedly connected to the drive end of cylinder 2 7. The rotating disk 8 rotates with the drive of cylinder 2 7. The limiting groove 9 on its bottom surface cooperates with the top of the extrusion block 12. The rotational motion is converted into the radial movement of the extrusion block 12 through mechanical transmission. The bottom of the fixed disk 10 is slidably connected to the top of the rotating disk 8. The fixed disk 10 and the rotating disk 8 adopt a low friction coefficient sliding design to ensure that when the rotating disk 8 rotates, the fixed disk 10 remains stationary, and only the extrusion block 12 moves along the sliding groove 11. Multiple limiting grooves 9 are opened inside the rotating disk 8. The inclination angle of the multiple limiting grooves 9 has been mechanically optimized. When the rotating disk 8 rotates, it can generate a uniform radial thrust on the extrusion block 12 through the groove wall, so that the extrusion block 12 slides towards the center synchronously. The extrusion block 12 is slidably connected inside the limiting groove 9. The inner side of the extrusion block 12 is an arc surface that matches the outer contour of the plastic bottle. When sliding towards the center, it can stably fix plastic bottles of different diameters through a multi-point encircling method to avoid bottle deformation.
[0016] The outer side of the extrusion block 12 is slidably connected to the inside of the sliding groove 11. The inner wall of the sliding groove 11 is precision polished to form a precise fit with the outer side of the extrusion block 12, reducing sliding resistance while ensuring the accuracy of the movement trajectory of the extrusion block 12. Both sides of the lifting plate 6 are fixedly connected to the limiting plate 14. The limiting plate 14 moves synchronously with the lifting plate 6. Its central hole is clearance-fitted with the limit rod 13, further enhancing the guiding stability during the lifting process and reducing the sway amplitude. An automatic component is fixedly connected inside the limiting plate 14. The automatic component is linked with the lifting action and can achieve lubrication of the limit rod 13 without additional power, reducing mechanical wear and extending the service life of the equipment.
[0017] Reference Figure 1 , Figure 2 and Figure 4 The automatic component includes a connecting column 15, which is axially arranged along the limiting rod 13. Its inner side contacts the limiting rod 13. When the limiting disc 14 rises and falls, it drives the internal ball bearings 17 to roll along the surface of the limiting rod 13 to achieve dynamic lubrication. The inner side of the connecting column 15 is slidably connected to the outer side of the limiting rod 13. The fit clearance between the connecting column 15 and the limiting rod 13 is precisely designed to ensure smooth sliding and to evenly spread the lubricating oil in the storage tank 19 through the rolling of the ball bearings 17. The inside of the connecting column 15 is fixedly connected to the feed port 16, which is used to replenish the lubricating oil. Its position design facilitates quick filling by the operator, and its internal structure can prevent the lubricating oil from leaking when not in operation. The inside of the feed port 16 is slidably connected to the piston 18. The piston 18 can automatically rebound after the lubricating oil is consumed to maintain the pressure stability in the storage tank 19 and ensure that the lubricating oil is continuously supplied to the contact area between the ball bearings 17 and the limiting rod 13.
[0018] The outer side of the connecting column 15 is fixedly connected to the inside of the limiting plate 14, forming a rigid connection between the connecting column 15 and the limiting plate 14 to ensure synchronous movement during lifting and lowering, so that the lubrication action is fully linked with the lifting action. The connecting column 15 has a storage groove 19 inside, which is an annular cavity that can store a certain amount of lubricating oil to meet the lubrication needs of multiple lifting and lowering actions, reducing the frequency of manual maintenance. Multiple balls 17 are rotatably connected inside the storage groove 19. The multiple balls 17 are evenly distributed along the circumference of the limiting rod 13. When the connecting column 15 is lifted and lowered, the lubricating oil is carried out through rolling friction, forming a continuous oil film on the surface of the limiting rod 13, which effectively reduces the coefficient of friction. The outer side of the balls 17 is rotatably connected to the outer side of the limiting rod 13. When the balls 17 are in contact with the surface of the limiting rod 13, they move by rolling rather than sliding, which not only reduces their own wear, but also evenly spreads the lubricating oil, improving the lubrication effect.
[0019] Working principle: When the operator needs to seal the plastic bottle, the plastic bottle is placed on top of the fixed plate 10. Then, the cylinder 7 is started, which drives the rotating plate 8. The rotating plate 8 squeezes the squeezing block 12 through the limiting groove 9 inside. The outer side of the squeezing block 12 slides inside the sliding groove 11 inside the fixed plate 10. At this time, the squeezing block 12 will slide inward along the groove of the sliding groove 11 due to the squeezing of the limiting groove 9, thereby fixing the plastic bottle. Then, the cylinder 5 is started, which lifts the lifting plate 6 upward, so that the top of the plastic bottle slides into the inside of the sealing device 4. Then, the sealing device 4 is activated, and the plastic bottle is sealed.
[0020] During the upward movement of the lifting plate 6, the limiting plates 14 connected to both sides will also be driven. The limiting plate 14 is connected to the connecting column 15, and the connecting column 15 will also be driven upward. This will cause the multiple balls 17 inside the connecting column 15 to rotate outside the limiting rod 13, thereby bringing out the lubricating oil stored in the storage groove 19 opened inside the connecting column 15. This allows the balls 17 to apply the lubricating oil to the outside of the limiting rod 13, and the limiting rod 13 can prevent the lifting plate 6 from shifting its position during the upward movement.
[0021] 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. A strong-sealing plastic packaging closure device, comprising a sealing closure device (1), characterized in that: The top of the sealing and closing device (1) is fixedly connected to a cylinder (5), the driving end of the cylinder (5) is fixedly connected to a lifting plate (6), the top of the lifting plate (6) is rotatably connected to a cylinder (7), the driving end of the cylinder (7) is fixedly connected to a rotating plate (8), the rotating plate (8) has multiple limiting grooves (9) inside, the limiting grooves (9) are slidably connected to a squeezing block (12), the lifting plate (6) is fixedly connected to both sides of a limiting plate (14), and an automatic component is fixedly connected inside the limiting plate (14).
2. The strong-sealing plastic packaging closure device according to claim 1, characterized in that: The automatic component includes a connecting column (15), the outer side of which is fixedly connected to the inside of the limiting disk (14), and a storage slot (19) is provided inside the connecting column (15), and a plurality of balls (17) are rotatably connected inside the storage slot (19).
3. The strong-sealing plastic packaging closure device according to claim 1, characterized in that: The top of the lifting plate (6) is fixedly connected to a fixed plate (10), and the fixed plate (10) has multiple sliding grooves (11) inside.
4. The strong-sealing plastic packaging closure device according to claim 3, characterized in that: The outer side of the extrusion block (12) is slidably connected to the inside of the sliding groove (11), and the bottom of the fixed disk (10) is slidably connected to the top of the rotating disk (8).
5. The strong-sealing plastic packaging closure device according to claim 2, characterized in that: The feed inlet (16) is fixedly connected inside the connecting column (15), and the piston (18) is slidably connected inside the feed inlet (16).
6. The strong-sealing plastic packaging closure device according to claim 2, characterized in that: The top of the sealing and closing device (1) is fixedly connected to two limiting rods (13), and the inner side of the connecting column (15) is slidably connected to the outer side of the limiting rods (13).
7. The strong-sealing plastic packaging closure device according to claim 6, characterized in that: The outer side of the ball (17) is rotatably connected to the outer side of the limiting rod (13), and the top of the sealing and closing device (1) is fixedly connected to the bracket (2).
8. The strong-sealing plastic packaging closure device according to claim 7, characterized in that: The top of the bracket (2) is fixedly connected to the outer shell (3), and the inside of the outer shell (3) is fixedly connected to the seal (4).