Plastic film heat sealing device

Abstract

The utility model discloses a plastic film heat sealing device which comprises a workbench, a motor is fixedly installed on the side face of the workbench, the output end of the motor is fixedly connected with a threaded rod, a movable block is arranged on the outer side of the threaded rod and fixedly connected with a fixing plate, a heat sealing groove is formed in the surface of the fixing plate, and a limiting groove is formed in the fixing plate. A sliding groove is formed in the connecting plate, the inner wall of the sliding groove is rotationally connected with one end of a two-way lead screw, a sliding block is arranged on the outer side of the two-way lead screw and movably hinged to one end of a hinged plate, and the other end of the hinged plate is hinged to the transverse plate. The two-way lead screw is rotated to drive the hinged plate, so that the transverse plate and the pressing wheel move horizontally, the edges of plastic films with different radiuses are pressed, the situation that the edges of the plastic films tilt during heat sealing is avoided, meanwhile, the plastic films are tightly attached to the surface of the fixing plate through the tension of the tension spring, and the heat sealing efficiency is improved. And the condition that the plastic film deviates during heat sealing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of plastic film technology, specifically to a plastic film heat sealing device. Background Technology

[0002] A plastic film heat-sealing device heats and seals the plastic film to form a plastic bag for packaging. Plastic packaging bags and products are gaining an increasingly larger market share, especially composite plastic flexible packaging, which is widely used in the food, pharmaceutical, and chemical industries. Food packaging accounts for the largest proportion, including beverage packaging, frozen food packaging, retortable food packaging, and fast food packaging. These products have brought great convenience to people's lives.

[0003] According to announcement number CN219427600 U, a plastic film heat sealing device is disclosed. This patent includes a workbench with a sliding groove. The sliding groove is equipped with a slider. The patent uses the limiting groove and the pressure plates on both sides of the placement table to work together to facilitate pressing the two sides of the plastic film and to keep the closed position of the plastic film consistent.

[0004] However, the pressure plate in the aforementioned patent has a fixed length, making it impossible to clamp and fix plastic films of different radii. Furthermore, while the pressure plates on both sides are moved by the first cylinder to fix the plastic film, it is not convenient for the plastic film to be inserted into the limiting groove and moved after being fixed by the pressure plates, thus reducing the actual use effect. Utility Model Content

[0005] The purpose of this invention is to provide a plastic film heat sealing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic film heat sealing device, comprising a worktable, a motor fixedly mounted on the side of the worktable, the output end of the motor fixedly connected to a threaded rod, a movable block provided on the outer side of the threaded rod, the movable block fixedly connected to a fixed plate, a heat sealing groove formed on the surface of the fixed plate, a limiting groove provided on the fixed plate, a connecting plate provided on the upper surface of the fixed plate, a sliding groove formed inside the connecting plate, the inner wall of the sliding groove rotatably connected to one end of a bidirectional lead screw, a slider provided on the outer side of the bidirectional lead screw, the slider being movably hinged to one end of a hinge plate, the other end of the hinge plate being hinged to a horizontal plate, a pressure wheel provided on the side of the horizontal plate, a sliding column provided on the fixed plate, a tension spring sleeved on the outer side of the sliding column, a heat sealing machine provided on the surface of the worktable, and a controller fixedly mounted on the side of the worktable.

[0007] Preferably, a rectangular groove is formed on the upper surface of the worktable, one end of the threaded rod is rotatably connected to the inner wall of the rectangular groove, and the moving block is threadedly connected to the outer side of the threaded rod through a threaded hole.

[0008] Preferably, both sides of the fixed plate are fixedly connected to the movable block, a circular through hole is opened on the surface of the fixed plate, the fixed plate is slidably connected to the outside of the sliding column through the circular through hole, and the bottom of the sliding column extends to the bottom of the fixed plate and is fixedly connected to the circular baffle.

[0009] Preferably, the connecting plates are symmetrically distributed on both sides of the fixed plate, and one end of the bidirectional lead screw extends to the outside of the connecting plate and is fixedly connected to the handwheel.

[0010] Preferably, the two sides of the bidirectional lead screw are provided with opposite threads, the sliders are symmetrically distributed on both sides of the bidirectional lead screw, and the sliders are connected to the outer thread of the bidirectional lead screw through threaded holes.

[0011] Preferably, the hinge plates are symmetrically distributed on both sides of the horizontal plate, the horizontal plate is rotatably connected to the pressure wheel via a connecting shaft, and a rubber anti-slip layer is provided on the outer side of the pressure wheel.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention uses a clamping wheel to fix a plastic film to the surface of a fixed plate. A motor rotates a lead screw, which moves the fixed plate and the plastic film towards a heat sealing machine for heat sealing. Rotating the bidirectional lead screw causes the sliders on both sides to move inside the groove, further driving the hinge plate to move the horizontal plate and the clamping wheel horizontally. This allows the clamping wheel to press the edges of plastic films of different radii tightly, preventing the edges of the plastic film from lifting during heat sealing. At the same time, the tension of the spring drives the connecting plate and the clamping wheel downward until the plastic film is tightly adhered to the surface of the fixed plate, preventing the plastic film from shifting during heat sealing. The rotational connection between the clamping wheel and the horizontal plate makes it easy for one end of the plastic film to pass through the limiting groove without having to remove the clamping wheel from the plastic film and then move the plastic film, enhancing the convenience of the overall device and reducing the workload of the workers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the surface structure of the fixing plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the connecting plate and the pressure wheel of this utility model.

[0018] In the diagram: 1. Workbench; 2. Motor; 3. Threaded rod; 4. Moving block; 5. Fixed plate; 6. Heat sealing groove; 7. Limiting groove; 8. Connecting plate; 9. Slide groove; 10. Two-way lead screw; 11. Slider; 12. Hinge plate; 13. Horizontal plate; 14. Pressure wheel; 15. Sliding column; 16. Tension spring; 17. Heat sealing machine; 18. Controller. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a plastic film heat sealing device, including a workbench 1. The side of the workbench 1 is connected and fixed to a motor 2 by bolts. The output end of the motor 2 is welded and fixed to a threaded rod 3. A guide rod is provided on the other side of the workbench 1, and a moving block 4 is provided on the outer side of the guide rod. The moving block 4 is slidably connected to the outer side of the guide rod. The outer side of the threaded rod 3 is threadedly connected to the moving block 4. The moving block 4 is welded and fixed to a fixed plate 5. A heat sealing groove 6 is opened on the surface of the fixed plate 5, and a limiting groove 7 is provided on the fixed plate 5. The upper surface of the fixed plate 5 is connected by... The sliding column 15 is slidably connected to the connecting plate 8. A groove 9 is formed inside the connecting plate 8. The inner wall of the groove 9 is rotatably connected to one end of the double-acting screw 10. The outer side of the double-acting screw 10 is threadedly connected to the slider 11. The slider 11 is movably hinged to one end of the hinge plate 12, and the other end of the hinge plate 12 is hinged to the horizontal plate 13. The side of the horizontal plate 13 is rotatably connected to the pressure wheel 14 via a connecting shaft. The sliding column 15 is mounted on the fixed plate 5, and a tension spring 16 is sleeved on the outer side of the sliding column 15. A heat sealer 17 is mounted on the surface of the worktable 1, and the side of the worktable 1 is connected and fixed to the controller 18.

[0021] A rectangular groove is formed on the upper surface of the workbench 1. One end of the threaded rod 3 is rotatably connected to the inner wall of the rectangular groove. The moving block 4 is threadedly connected to the outer side of the threaded rod 3 through a threaded hole. The motor 2 rotates the threaded rod 3, which in turn moves the fixed plate 5 and the plastic film, enhancing the actual use effect.

[0022] The fixed plate 5 is welded and fixed to the movable block 4 on both sides. A circular through hole is opened on the surface of the fixed plate 5. The fixed plate 5 is slidably connected to the outer side of the sliding column 15 through the circular through hole. The bottom of the sliding column 15 extends to the bottom of the fixed plate 5 and is welded and fixed to a circular baffle. The tension spring 16 is located between the fixed plate 5 and the connecting plate 8. The tension of the tension spring 16 causes the connecting plate 8 and the pressure roller 14 to move downward. The pressure roller 14 and the fixed plate 5 press and fix the plastic film, preventing the plastic film from shifting. The structure is simple and avoids the need for an additional drive source to move the connecting plate 8 and the pressure roller 14 downward to fix the plastic film. The pressure roller 14 also facilitates the pulling of the plastic film.

[0023] Connecting plates 8 are symmetrically distributed on both sides of the fixed plate 5. One end of the bidirectional lead screw 10 extends to the outside of the connecting plate 8 and is welded and fixed to the handwheel. Opposite threads are provided on both sides of the bidirectional lead screw 10. Slider 11 is symmetrically distributed on both sides of the bidirectional lead screw 10. The slider 11 is threadedly connected to the outside of the bidirectional lead screw 10 through threaded holes. Hinged plates 12 are symmetrically distributed on both sides of the horizontal plate 13. The horizontal plate 13 is rotatably connected to the pressure wheel 14 through a connecting shaft. A rubber anti-slip layer is provided on the outside of the pressure wheel 14.

[0024] Working principle: In use, lift the clamping roller 14 upwards and pass one end of the plastic film through the limiting groove 7, then lay the plastic film flat on the surface of the fixing plate 5. Then, the tension of the tension spring 16 causes the connecting plate 8 and the clamping roller 14 to move downwards, and the clamping roller 14 and the fixing plate 5 press and fix the plastic film to prevent the plastic film from shifting. The motor 2 causes the threaded rod 3 to rotate and drive the fixing plate 5 to move towards the heat sealing machine 17, and the heat sealing machine 17 heat seals the plastic film. When the plastic film is pulled, the plastic film can drive the clamping roller 14 to rotate without obstructing the movement of the film. Since the surface of the clamping roller 14 is provided with a rubber anti-slip layer, it prevents the plastic film from shifting horizontally during the movement. When it is necessary to clamp plastic films of different radii, the handwheel is turned to rotate the bidirectional screw 10, so that the sliders 11 on both sides move inside the slide groove 9. The hinge plate 12 pushes the horizontal plate 13 and the clamping roller 14 to move horizontally. The position of the clamping roller 14 can be adjusted to easily fix plastic films of different radii.

[0025] 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.

[0026] 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 plastic film heat sealing device, comprising a workbench (1), characterized in that: A motor (2) is fixedly installed on the side of the workbench (1). The output end of the motor (2) is fixedly connected to the threaded rod (3). A moving block (4) is provided on the outside of the threaded rod (3). The moving block (4) is fixedly connected to the fixed plate (5). A heat-sealing groove (6) is opened on the surface of the fixed plate (5). A limiting groove (7) is provided on the fixed plate (5). A connecting plate (8) is provided on the upper surface of the fixed plate (5). A sliding groove (9) is opened inside the connecting plate (8). The inner wall of the sliding groove (9) is connected to the bidirectional lead screw (1). 0) One end is rotatably connected, and a slider (11) is provided on the outside of the bidirectional screw (10). The slider (11) is movably hinged to one end of the hinge plate (12), and the other end of the hinge plate (12) is hinged to the horizontal plate (13). A pressure wheel (14) is provided on the side of the horizontal plate (13). A sliding column (15) is provided on the fixed plate (5). A tension spring (16) is sleeved on the outside of the sliding column (15). A heat sealing machine (17) is provided on the surface of the workbench (1), and a controller (18) is fixedly installed on the side of the workbench (1).

2. The plastic film heat sealing device according to claim 1, characterized in that: A rectangular groove is formed on the upper surface of the workbench (1), one end of the threaded rod (3) is rotatably connected to the inner wall of the rectangular groove, and the moving block (4) is threadedly connected to the outer side of the threaded rod (3) through a threaded hole.

3. The plastic film heat sealing device according to claim 1, characterized in that: Both sides of the fixed plate (5) are fixedly connected to the movable block (4). A circular through hole is opened on the surface of the fixed plate (5). The fixed plate (5) is slidably connected to the outside of the sliding column (15) through the circular through hole. The bottom of the sliding column (15) extends to the bottom of the fixed plate (5) and is fixedly connected to the circular baffle.

4. The plastic film heat sealing device according to claim 1, characterized in that: The connecting plates (8) are symmetrically distributed on both sides of the fixed plate (5), and one end of the bidirectional lead screw (10) extends to the outside of the connecting plate (8) and is fixedly connected to the handwheel.

5. A plastic film heat sealing device according to claim 1, characterized in that: The two-way lead screw (10) has opposite threads on both sides, and the sliders (11) are symmetrically distributed on both sides of the two-way lead screw (10). The sliders (11) are connected to the outer threads of the two-way lead screw (10) through threaded holes.

6. The plastic film heat sealing device according to claim 1, characterized in that: The hinge plates (12) are symmetrically distributed on both sides of the horizontal plate (13). The horizontal plate (13) is rotatably connected to the pressure wheel (14) through the connecting shaft. The pressure wheel (14) is provided with a rubber anti-slip layer on its outer side.

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