Heightened vacuum skin sealing mechanism

Abstract

The utility model discloses a heightened vacuum skin sealing mechanism which comprises a working table, a film releasing shaft, a film collecting shaft, a driving air cylinder and a connecting plate, the connecting plate is connected with a vacuum chamber through a first spring 23, an upper die holder assembly is installed in the vacuum chamber, a lower die holder assembly is arranged below the vacuum chamber, and the upper die holder assembly is connected with a first spring 23. The connecting plate is connected with the upper die base through a first connecting column, the lower die base assembly comprises a lower die frame with two containing grooves, annular steps are arranged at groove openings of the containing grooves, the upper die base assembly comprises an upper die plate, a first sealing and cutting device and a second sealing and cutting device are arranged below the upper die plate, and the first sealing and cutting device and the second sealing and cutting device are arranged on the upper die plate. The first sealing and cutting device and the second sealing and cutting device each comprise a heat sealing plate and an annular cutter, the annular cutters are arranged on the peripheries of the heat sealing plates in a surrounding mode, the annular cutters are connected to the upper die plate through second connecting columns, and the heat sealing plates are movably connected to the upper die plate through second springs. The utility model has the advantage of high degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of sealing mechanisms, specifically a high-vacuum body sealing mechanism. Background Technology

[0002] Packaging boxes are commonly used in food packaging and other fields, and food packaging requires sealing with packaging film. Packaging machines are needed to seal packaging boxes with film. These machines have cutters and heat exchangers. During the packaging process, the heat exchanger first seals the packaging film onto the box, and then the cutter cuts the film. Currently, sealing packaging boxes with film requires manual operation, which is inconvenient and needs improvement. Utility Model Content

[0003] The purpose of this invention is to provide a high-vacuum body sealing mechanism to solve the problems mentioned in the background art, which has the advantage of high automation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a heightened vacuum sealing mechanism, comprising a worktable, with a film-laying shaft and a film-receiving shaft fixedly connected to both sides of the worktable, a drive cylinder mounted on the worktable, a connecting plate connected to the drive cylinder, an adjusting plate disposed below the connecting plate, a vacuum chamber connected to the adjusting plate via a first spring, an upper mold base assembly mounted inside the vacuum chamber, a lower mold base assembly disposed below the vacuum chamber, the adjusting plate and the upper mold base assembly connected via a first connecting column, the lower mold base assembly comprising a lower mold frame having two placement slots, an annular step provided at the opening of the placement slots, the upper mold base assembly comprising an upper template, a sealing and cutting device one and a sealing and cutting device two disposed below the upper template, both the sealing and cutting device one and the sealing and cutting device two comprising a heat-sealing plate and an annular cutter, the annular cutter surrounding the heat-sealing plate, the annular cutter being connected to the upper template via a second connecting column, and the heat-sealing plate being movably connected to the upper template via a second spring.

[0005] Preferably, the workbench is provided with through-die grooves on both sides for the packaging film to pass through.

[0006] By adopting the above technical solution, it is easier for the packaging film to pass through the workbench.

[0007] Preferably, a clamping cylinder is fixedly connected to the middle of the upper mold base assembly, and the clamping cylinder is connected to a clamping plate.

[0008] By adopting the above technical solution, the film clamping plate can play the role of clamping the packaging film.

[0009] Preferably, the workbench is provided with ventilation holes on its side.

[0010] Preferably, an intermediate plate is fixedly connected to the lower side of the vacuum chamber.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The first cylinder is activated, causing the lower mold frame to move outward, allowing technicians to place the box to be packaged into the placement slot of the lower mold base assembly. The opening edge of the slot is located on the annular step. Then, the lower mold frame is reset, and the film clamping cylinder is activated, causing the film clamping plate to move towards the lower mold frame. The packaging film is positioned between the film clamping plate and the lower mold frame. Activating the film clamping cylinder again causes the film clamping plate to reset, returning to its position below the vacuum chamber. The drive cylinder then moves the connecting plate downward, which in turn moves the adjusting plate downward. The downward movement of the adjusting plate moves the second limiting rod downward, which in turn moves the vacuum chamber downward. The vacuum chamber moves downward until it is in contact with the lower mold base. During the above process, the first limiting rod acts as a guide.

[0013] Next, vacuum replacement begins. After vacuum replacement, the drive cylinder continues to move downwards, carrying the second limit rod and consequently the upper template. Then, the annular cutter, controlled by the upper template, moves towards the lower module assembly, cutting the packaging film in a ring shape. The cut film is slightly smaller than the box opening, preventing waste edges. The upper template continues to move downwards, further driving the annular cutter and heat-sealing plate. During this process, the annular cutter, having completed its cutting work, will not contact other objects as it moves downwards. The heat-sealing plate, moving towards the lower mold assembly, will contact the packaging film, sealing it at the box opening. This workflow, using an annular cutter to cut the film first and then a heat-sealing plate to seal it, prevents waste edges from extending beyond the box, improving the box's neatness and the overall quality of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0015] Figure 2 This is a schematic diagram of the internal structure of the workbench in the embodiment;

[0016] Figure 3 This is a top view of an embodiment;

[0017] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0018] Figure 5 This is a schematic diagram of the structure before operation in the embodiment;

[0019] Figure 6 A schematic diagram of a film clamping plate for holding packaging film;

[0020] Figure 7 This is a schematic diagram of the structure in the film-cutting state of the embodiment.

[0021] In the diagram: 1. Workbench; 2. Film feeding shaft; 3. Film receiving shaft; 4. Drive cylinder; 5. Connecting plate; 6. Vacuum chamber; 7. First connecting column; 8. Lower mold frame; 9. Placement groove; 10. Annular step; 11. Upper mold plate; 12. Heat sealing plate; 13. Annular cutter; 14. Through mold groove; 15. Film clamping cylinder; 16. Film clamping plate; 17. Vent hole; 18. Intermediate plate; 19. First cylinder; 20. Track; 21. Slider; 22. Adjusting plate; 23. First spring; 24. Second spring; 25. Second connecting column. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In this embodiment of the utility model,

[0024] A heightened vacuum sealing mechanism includes a worktable 1. A film-laying shaft 2 and a film-receiving shaft 3 are fixedly connected to both sides of the worktable 1. A drive cylinder 4 is mounted on the worktable 1, and the drive cylinder 4 is connected to a connecting plate 5. An adjusting plate 22 is disposed below the connecting plate 5. The adjusting plate 22 is connected to a vacuum chamber 6 via a first spring 23. An upper mold base assembly is installed inside the vacuum chamber 6, and a lower mold base assembly is disposed below the vacuum chamber 6. The adjusting plate 22 and the upper mold base assembly are connected via a first connecting post 7. The lower mold base... The assembly includes a lower mold frame 8 with two placement slots 9, and an annular step 10 at the opening of the placement slot 9. The upper mold base assembly includes an upper template 11. A sealing and cutting device one and a sealing and cutting device two are provided below the upper template 11. Both sealing and cutting device one and sealing and cutting device two include a heat sealing plate 12 and an annular cutter 13. The annular cutter 13 surrounds the heat sealing plate 12 and is connected to the upper template 11 through a second connecting post 25. The heat sealing plate 12 is movably connected to the upper template 11 through a second spring 24.

[0025] The workbench 1 has through-die grooves 14 on both sides for the packaging film to pass through.

[0026] A clamping cylinder 15 is fixedly connected to the middle of the upper mold base assembly, and the clamping cylinder 15 is connected to a clamping plate 16.

[0027] The workbench 1 has ventilation holes 17 on its side.

[0028] A middle plate 18 is fixedly connected to the lower side of the vacuum chamber 6.

[0029] The inner side of the workbench 1 is provided with a first cylinder 19, which is fixedly connected to the lower mold frame 8. The workbench 1 is fixedly connected to a track 20 located below the lower mold frame 8, and the lower mold frame 8 is integrally connected to a slider 21 that is slidably connected to the track 20.

[0030] Working principle:

[0031] The first cylinder 19 is activated, causing the lower mold frame 8 to move outward, allowing technicians to place the box to be packaged into the placement slot 9 of the lower mold base assembly, with its opening edge located on the annular step 10. Then, the lower mold frame 8 is reset, and the film clamping cylinder 15 is activated, causing the film clamping plate 16 to move towards the lower mold frame 8. The packaging film is positioned between the film clamping plate 16 and the lower mold frame 8. The film clamping cylinder 15 is activated, causing the film clamping plate 16 to reset, returning to the position below the vacuum chamber 6. The drive cylinder 4 moves the connecting plate 5 downward, which in turn moves the adjusting plate downward. The downward movement of the adjusting plate moves the second limiting rod downward, which in turn moves the vacuum chamber 6 downward. The vacuum chamber 6 moves downward until it is in contact with the lower mold base. During the above process, the first limiting rod acts as a guide.

[0032] Next, vacuum replacement begins. After vacuum replacement, the drive cylinder 4 continues to move downwards, carrying the second limit rod and thus the upper template 11. Then, the annular cutter 13, controlled by the upper template 11, moves towards the lower module assembly, cutting the packaging film in a ring shape. The cut packaging film is slightly smaller than the box opening, preventing waste edges. The upper template 11 continues to move downwards, further driving the annular cutter 13 and the heat-sealing plate 12 downwards. During this process, the annular cutter 13, having completed its cutting work, will not contact other objects as it moves downwards. The heat-sealing plate 12, moving towards the lower mold assembly, will contact the packaging film, sealing it at the box opening. This workflow, using the annular cutter 13 to cut the film first and the heat-sealing plate 12 to seal it, ensures that the packaging film does not extend beyond the box, improving the neatness of the box and the overall quality of the equipment.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heightened vacuum body sealing mechanism, comprising a worktable (1), characterized in that: The workbench (1) is fixedly connected to a film-laying shaft (2) and a film-receiving shaft (3) on both sides respectively. The workbench (1) is equipped with a drive cylinder (4), which is connected to a connecting plate (5). An adjusting plate (22) is provided below the connecting plate (5). The adjusting plate (22) is connected to a vacuum chamber (6) via a first spring (23). An upper mold base assembly is installed in the vacuum chamber (6). A lower mold base assembly is provided below the vacuum chamber (6). The adjusting plate (22) and the upper mold base assembly are connected by a first connecting column (7). The lower mold base assembly includes a lower mold frame with two placement slots (9). (8) The groove opening of the placement groove (9) is provided with an annular step (10). The upper mold base assembly includes an upper template (11). A sealing and cutting device one and a sealing and cutting device two are provided below the upper template (11). Both the sealing and cutting device one and the sealing and cutting device two include a heat sealing plate (12) and an annular cutter (13). The annular cutter (13) surrounds the heat sealing plate (12). The annular cutter (13) is connected to the upper template (11) through a second connecting column (25). The heat sealing plate (12) is movably connected to the upper template (11) through a second spring (24). The film clamping plate can clamp the packaging film.

2. The high-vacuum body sealing mechanism according to claim 1, characterized in that: The workbench (1) is provided with through mold grooves (14) on both sides for the packaging film to pass through.

3. The high-vacuum body sealing mechanism according to claim 1, characterized in that: A clamping cylinder (15) is fixedly connected to the middle of the upper mold base assembly, and the clamping cylinder (15) is connected to a clamping plate (16).

4. The high-vacuum body sealing mechanism according to claim 1, characterized in that: The workbench (1) has ventilation holes (17) on its side.

5. The high-vacuum body sealing mechanism according to claim 1, characterized in that: A middle plate (18) is fixedly connected to the lower side of the vacuum chamber (6).

6. The high-vacuum body sealing mechanism according to claim 1, characterized in that: The inner side of the workbench (1) is provided with a first cylinder (19), the first cylinder (19) is fixedly connected to the lower mold frame (8), the workbench (1) is fixedly connected to a track (20) located below the lower mold frame (8), and the lower mold frame (8) is integrally connected to a slider (21) that is slidably connected to the track (20).

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