A plastic packaging bag edge sealing device
By using a lifting and moving clamping edge-sealing mechanism, the compatibility and stability issues of existing devices have been resolved, enabling stable edge sealing of packaging bags of different heights and improving sealing quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI KINKI PLASTIC PACKAGING PROD CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-06-26
AI Technical Summary
Existing plastic packaging bag sealing devices are difficult to adapt to packaging bags of different heights, and are prone to tipping or shifting during the sealing process, resulting in unstable and uneven sealing quality.
The lifting mechanism consists of a fixed vertical plate, lifting guide rail, bidirectional motor, vertical lead screw, lifting slider, and horizontal fixed plate. Combined with the horizontal fixed plate, horizontal guide rail, bidirectional motor, horizontal lead screw, horizontal slider, heater, and heat sealing clamp, it forms a mobile clamping sealing mechanism to achieve adaptation and stable sealing of packaging bags of different heights.
The adaptability and stability of the sealing device have been improved, ensuring that packaging bags of different heights do not tip over during the sealing process, thus improving sealing quality and efficiency.
Smart Images

Figure CN224409858U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sealing technology for packaging bags, and in particular to a sealing device for plastic packaging bags. Background Technology
[0002] In the modern packaging industry, the sealing quality of plastic packaging bags directly affects the shelf life of the contents, moisture and dust protection performance, and overall packaging aesthetics. Therefore, sealing devices play a crucial role in the packaging production line.
[0003] Currently, most commercially available plastic bag sealing devices use a fixed structure, making it difficult to adapt to plastic packaging of different heights during the sealing process. When sealing bags of different sizes is required, manual replacement or adjustment of the equipment is often necessary, which is not only cumbersome and inefficient but also prone to inconsistent sealing quality due to improper adjustments. Furthermore, traditional sealing devices typically only heat and seal one side of the plastic bag during the sealing process, lacking effective clamping and fixing measures. This allows the bag to easily tip over or shift during sealing, resulting in wrinkles and incomplete seals, severely impacting packaging effectiveness and product quality. Utility Model Content
[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a plastic packaging bag sealing device. The device comprises a lifting mechanism consisting of a fixed vertical plate, a lifting guide rail, a bidirectional motor, a vertical lead screw, a lifting slider, and a horizontal fixed plate. This allows the device to adapt to plastic packaging of different heights during the sealing process, improving its adaptability. A movable clamping sealing mechanism is formed by a horizontal fixed plate, a horizontal guide rail, a bidirectional motor, a horizontal lead screw, a horizontal slider, a heater, and a heat-sealing clamp. The heat-sealing clamp can clamp the plastic packaging and seal the edges, preventing the plastic packaging from tipping over and improving the stability of the sealing process.
[0005] This utility model also provides a sealing device for plastic packaging bags, comprising: a fixed base plate, on the upper surface of which a conveyor frame and a fixed vertical plate are fixedly connected; a conveyor belt is provided at the upper end of the conveyor frame; and the fixed vertical plates are symmetrically distributed on the left and right sides of the conveyor frame; a lifting guide rail, fixedly connected to the inner surface of the fixed vertical plate; a first bidirectional motor fixedly connected to the lower end of the lifting guide rail; a lifting slider fixedly connected to the output end of the first bidirectional motor via a vertical lead screw thread; a horizontal fixed plate fixedly connected to the lifting slider; a horizontal guide rail fixedly connected to the lower surface of the horizontal fixed plate; a second bidirectional motor fixedly connected to one end of the horizontal guide rail; a horizontal slider fixedly connected to the output end of the second bidirectional motor via a horizontal lead screw thread; a heater fixedly connected to the lower surface of the horizontal slider; and a heat sealing clamp provided at the lower end of the heater.
[0006] According to the present invention, a sealing device for plastic packaging bags includes four casters fixedly connected to the lower surface of a fixed base plate, located at the four corners of the fixed base plate. This facilitates the movement of the device and improves its ease of use.
[0007] According to the present invention, a sealing device for plastic packaging bags includes a mounting plate fixedly connected to the rear surface of the conveyor frame by fixing bolts, and a handle fixedly connected to the front surface of the mounting plate. This facilitates the movement of the device and improves its ease of use.
[0008] According to the present invention, a sealing device for plastic packaging bags includes an inclined rail fixedly connected to the front end of the conveyor frame, a drive motor fixedly connected to the side surface of the conveyor frame, and the output end of the drive motor being connected to the conveyor belt via a pulley. This facilitates material handling.
[0009] According to the present invention, a sealing device for plastic packaging bags includes a collection box fixedly connected to the upper surface of the fixed base plate, the collection box being located below the inclined rail. This facilitates material unloading.
[0010] According to the sealing device for plastic packaging bags described in this utility model, the lower end of the lifting guide rail is fixedly connected to the upper surface of the fixed base plate, making the structure stable and firm. Vertical grooves are provided on the inner walls of both the left and right sides of the lifting guide rail to facilitate the limiting installation of the lifting slider.
[0011] According to the sealing device for plastic packaging bags described in this utility model, vertical sliding rods are fixedly connected to both the left and right sides of the lifting slider, and the vertical sliding rods slide within vertical grooves. This facilitates the stable lifting and lowering of the lifting slider.
[0012] According to the sealing device for plastic packaging bags described in this utility model, horizontal grooves are provided on the inner walls of both sides of the horizontal guide rail. This facilitates the limiting installation of the horizontal slider.
[0013] According to the sealing device for plastic packaging bags described in this utility model, horizontal sliding rods are fixedly connected to both the left and right sides of the horizontal slider, and the horizontal sliding rods slide within the horizontal sliding grooves. This facilitates the stable movement of the horizontal slider.
[0014] Beneficial effects:
[0015] 1. Compared with the prior art, the sealing device for plastic packaging bags is composed of a lifting mechanism consisting of a fixed vertical plate, a lifting guide rail, a bidirectional motor, a vertical lead screw, a lifting slider and a horizontal fixed plate, which enables the device to adapt to plastic packaging of different heights during the sealing process, thus improving the adaptability of the device.
[0016] 2. Compared with the prior art, this plastic packaging bag sealing device consists of a horizontal fixed plate, a horizontal guide rail, a bidirectional motor, a horizontal lead screw, a horizontal slider, a heater, and a heat sealing clamp, forming a movable clamping sealing mechanism. The heat sealing clamp can clamp the plastic packaging and seal the edges, preventing the plastic packaging from tipping over and improving the stability of the sealing process. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a schematic diagram of the overall structure of a plastic packaging bag sealing device according to the present invention;
[0019] Figure 2 This is a top view of the sealing device for plastic packaging bags according to the present invention;
[0020] Figure 3 This is a longitudinal three-dimensional cross-sectional view of a sealing device for plastic packaging bags according to the present invention;
[0021] Figure 4 This is a schematic diagram of the transverse three-dimensional cross-sectional structure of a sealing device for plastic packaging bags according to this utility model.
[0022] Legend:
[0023] 1. Fixed base plate; 2. Fixing bolts; 3. Mounting plate; 4. Handle; 5. Conveyor frame; 6. Drive motor; 7. Conveyor belt; 8. Second bidirectional motor; 9. Fixed vertical plate; 10. Lifting guide rail; 11. Horizontal fixed plate; 12. Collection box; 13. Casters; 14. Horizontal guide rail; 15. Pulley; 16. Inclined rail; 17. Heat sealing clamp; 18. First bidirectional motor; 19. Vertical lead screw; 20. Lifting slider; 21. Vertical slide groove; 22. Vertical slide rod; 23. Horizontal lead screw; 24. Horizontal slider; 25. Horizontal slide groove; 26. Horizontal slide rod; 27. Heater. Detailed Implementation
[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0025] Reference Figure 1 , Figure 2 and Figure 3This utility model provides a sealing device for plastic packaging bags, which includes a fixed base plate 1. Casters 13 are fixedly connected to the lower surface of the fixed base plate 1. There are four casters 13, which are distributed at the four corners of the fixed base plate 1. A conveyor frame 5 and a fixed vertical plate 9 are fixedly connected to the upper surface of the fixed base plate 1. An mounting plate 3 is fixedly connected to the rear surface of the conveyor frame 5 by fixing bolts 2. A handle 4 is fixedly connected to the front surface of the mounting plate 3. A conveyor belt 7 is provided at the upper end of the conveyor frame 5. An inclined rail 16 is fixedly connected to the front end of the conveyor frame 5. A drive motor 6 is fixedly connected to the side surface of the conveyor frame 5. The output end of the drive motor 6 is connected to the conveyor belt 7 through a pulley 15. The fixed vertical plates 9 are symmetrically distributed on the left and right sides of the conveyor frame 5. A collection box 12 is fixedly connected to the upper surface of the fixed base plate 1. The collection box 12 is located below the inclined rail 16.
[0026] Specifically, the drive motor 6 will drive the conveyor belt 7 to operate through the pulley 15. After the heat sealing clamp 17 of the device seals the opening of the plastic package, the heat sealing clamp 17 will release the clamp on the plastic package, and the plastic package will be placed on the conveyor belt 7. The conveyor belt 7 will transport the plastic package to the unloading point.
[0027] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A lifting guide rail 10 is fixedly connected to the inner surface of the fixed vertical plate 9. The lower end of the lifting guide rail 10 is fixedly connected to the upper surface of the fixed base plate 1. Vertical grooves 21 are provided on the left and right inner walls of the lifting guide rail 10. A first bidirectional motor 18 is fixedly connected to the lower end of the lifting guide rail 10. The output end of the first bidirectional motor 18 is threadedly connected to a lifting slider 20 through a vertical lead screw 19. Vertical slide rods 22 are fixedly connected to the left and right surfaces of the lifting slider 20. The vertical slide rods 22 slide within the vertical grooves 21. A horizontal [unclear - possibly a horizontal rail] is fixedly connected to the lifting slider 20. A horizontal guide rail 14 is fixedly connected to the lower surface of a fixed plate 11. Horizontal slide grooves 25 are provided on the inner walls of both sides of the horizontal guide rail 14. A second bidirectional motor 8 is fixedly connected to one end of the horizontal guide rail 14. A horizontal slider 24 is threadedly connected to the output end of the second bidirectional motor 8 through a horizontal lead screw 23. Horizontal slide rods 26 are fixedly connected to the left and right surfaces of the horizontal slider 24. The horizontal slide rods 26 slide within the horizontal slide grooves 25. A heater 27 is fixedly connected to the lower surface of the horizontal slider 24. A heat sealing clamp 17 is provided at the lower end of the heater 27.
[0028] Specifically, plastic packages are stacked on conveyor belt 7. Lifting guide rail 10 adjusts heat sealing clamp 17 to a suitable position to match the height of the plastic packages. During this process, the first bidirectional motor 18 of lifting guide rail 10 drives lifting slider 20 to rise and fall via vertical lead screw 19, which in turn drives heat sealing clamp 17 to rise and fall. Horizontal guide rail 14 moves heat sealing clamp 17 to the position of the plastic package that needs to be sealed. Heat sealing clamp 17 clamps and seals the plastic package. During this process, the second bidirectional motor 8 of horizontal guide rail 14 drives horizontal slider 24 to move horizontally via horizontal lead screw 23, which in turn drives heat sealing clamp 17 to move horizontally. Heater 27 conducts heat to heat sealing clamp 17, enabling heat sealing clamp 17 to perform the sealing function.
[0029] Working principle: Plastic packages are stacked on the conveyor belt 7. The lifting guide rail 10 adjusts the heat sealing clamp 17 to a suitable position to match the height of the plastic package. The horizontal guide rail 14 moves the heat sealing clamp 17 to the position of the plastic package that needs to be sealed. The heater 27 conducts heat to the heat sealing clamp 17, enabling the heat sealing clamp 17 to perform the sealing function. The heat sealing clamp 17 clamps and seals the plastic package. The drive motor 6 drives the conveyor belt 7 through the pulley 15. After the heat sealing clamp 17 seals the opening of the plastic package, it releases the clamp and places the plastic package on the conveyor belt 7. The conveyor belt 7 then transports the plastic package to the unloading point.
[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A sealing device for plastic packaging bags, characterized in that, include: A fixed base plate (1) is fixedly connected to a conveyor frame (5) and a fixed vertical plate (9) on its upper surface. A conveyor belt (7) is provided at the upper end of the conveyor frame (5). The fixed vertical plates (9) are symmetrically distributed on the left and right sides of the conveyor frame (5). A lifting guide rail (10) is fixedly connected to the inner surface of a fixed vertical plate (9). A first bidirectional motor (18) is fixedly connected to the lower end of the lifting guide rail (10). The output end of the first bidirectional motor (18) is threadedly connected to a lifting slider (20) via a vertical lead screw (19). A horizontal fixed plate (11) is fixedly connected to the lifting slider (20). A horizontal guide rail (14) is fixedly connected to the lower surface of the horizontal fixed plate (11). A second bidirectional motor (8) is fixedly connected to one end of the horizontal guide rail (14). A horizontal slider (24) is threadedly connected to the output end of the second bidirectional motor (8) via a horizontal lead screw (23). A heater (27) is fixedly connected to the lower surface of the horizontal slider (24). A heat sealing clamp (17) is provided at the lower end of the heater (27).
2. The sealing device for a plastic packaging bag according to claim 1, characterized in that, The lower surface of the fixed base plate (1) is fixedly connected with casters (13), and there are four casters (13). The casters (13) are distributed at the four corners of the fixed base plate (1).
3. The sealing device for a plastic packaging bag according to claim 1, characterized in that, The rear surface of the conveyor frame (5) is fixedly connected to a mounting plate (3) by fixing bolts (2), and the front surface of the mounting plate (3) is fixedly connected to a handle (4).
4. The sealing device for a plastic packaging bag according to claim 1, characterized in that, The front end of the conveyor frame (5) is fixedly connected to an inclined rail (16), and the side surface of the conveyor frame (5) is fixedly connected to a drive motor (6). The output end of the drive motor (6) is connected to the conveyor belt (7) via a pulley (15).
5. A sealing device for plastic packaging bags according to claim 1, characterized in that, A collection box (12) is fixedly connected to the upper surface of the fixed base plate (1), and the collection box (12) is located below the inclined rail (16).
6. A sealing device for plastic packaging bags according to claim 1, characterized in that, The lower end of the lifting guide rail (10) is fixedly connected to the upper surface of the fixed base plate (1), and vertical grooves (21) are provided on the left and right inner walls of the lifting guide rail (10).
7. A sealing device for plastic packaging bags according to claim 1, characterized in that, The left and right sides of the lifting slider (20) are fixedly connected with vertical slide rods (22), which slide within the vertical slide groove (21).
8. A sealing device for plastic packaging bags according to claim 1, characterized in that, The horizontal guide rail (14) has horizontal grooves (25) on both the left and right inner walls.
9. A sealing device for a plastic packaging bag according to claim 1, characterized in that, The horizontal slider (24) is fixedly connected to the left and right sides with horizontal sliding rods (26), which slide within the horizontal groove (25).