A heat sealing and cooling device for a vertical packaging machine

Abstract

This utility model discloses a heat-sealing and cooling device for a vertical packaging machine, belonging to the technical field of packaging machines. The device includes a frame, side-sealing conveyor rollers, a cooling mechanism, a filter box, and an air pump. From top to bottom, the frame is equipped with a side-sealing mechanism, a horizontal sealing mechanism, and a cutting mechanism. Two sets of side-sealing conveyor rollers are rotatably mounted on the frame between the side-sealing and horizontal sealing mechanisms. The cooling mechanism is fixedly mounted on the frame and located between the horizontal sealing and cutting mechanisms. The filter box contains a filter screen and a spray pipe, with the spray pipe positioned above the filter screen and rotatable relative to it. A drain pipe is located at the bottom of the filter box. The air pump's inlet is connected to the filter box, and its outlet is connected to the cooling mechanism via a pipe. Specifically, this utility model provides a heat-sealing and cooling device for a vertical packaging machine that can filter the intake cooling airflow.

Description

Technical Field

[0001] This utility model belongs to the field of packaging machine technology, specifically referring to a heat sealing and cooling device for a vertical packaging machine. Background Technology

[0002] The typical workflow for vertical packaging machines to package powdered materials into small bags is as follows: first, a side-sealing mechanism seals one side of the packaging bag; then, a horizontal sealing mechanism seals the top and bottom horizontal sides of the packaging bag; finally, a cutting mechanism cuts the continuously sealed packaging strip into individual small bags. Currently, vertical packaging machines often directly perform heat cutting after heat sealing. However, the sealed area of ​​the packaging bag remains at a high temperature at this time, and the heat cutting process is prone to problems such as stringing and incomplete cutting. This not only damages the integrity of the packaging bag's appearance but may also cause the packaging material to entangle around the cutting mechanism, affecting the normal operation of the equipment.

[0003] Therefore, a cooling step needs to be added between heat sealing and shearing. The current mainstream solution is to use a cold air blower to spray cold air onto the sealing area to achieve rapid cooling of the seal. However, in the packaging environment of powdered materials, a large amount of material powder is suspended. When the cold air blower directly sprays cold air onto the heat-sealing edge, it will blow the powder in the environment towards the high-temperature sealing area. On the one hand, the powder is easy to adhere to the not fully cooled sealing surface, resulting in a decrease in the sealing performance and the risk of powder leakage. On the other hand, some powder may be embedded in the molten layer of the heat-sealing edge, affecting the strength of the sealing structure, reducing the stability of packaging quality, and making it difficult to meet the requirements of efficient and reliable packaging of powdered materials. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a heat sealing and cooling device for a vertical packaging machine, so as to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model is as follows: This utility model proposes a heat-sealing and cooling device for a vertical packaging machine, comprising:

[0006] The frame is equipped with a side sealing mechanism, a horizontal sealing mechanism and a cutting mechanism from top to bottom;

[0007] Two sets of side sealing conveyor rollers are mounted on the frame and rotate relative to each other, located between the side sealing mechanism and the horizontal sealing mechanism;

[0008] The cooling mechanism is fixed on the frame and located between the horizontal sealing mechanism and the cutting mechanism;

[0009] A filter box is provided with a filter screen and a spray pipe inside. The spray pipe is located above the filter screen and is configured to rotate relative to the filter screen. A drain pipe is provided at the bottom of the filter box.

[0010] The air pump has its inlet end connected to the filter box and its outlet end connected to the cooling mechanism via a pipe.

[0011] Furthermore, the lower part of the filter box is provided with an air inlet pipe, a protective shell is fixedly provided inside the filter box, a drive shaft is rotatably provided inside the protective shell, an impeller is provided on the drive shaft, the impeller is located above the filter screen, a driving bevel gear is provided on the drive shaft, a rotating shaft is rotatably provided on the bottom wall of the filter box, a driven bevel gear is provided on the rotating shaft, the driven bevel gear meshes with the driving bevel gear, a spray pipe is provided on the rotating shaft, the rotating shaft is hollow from the lower end to the spray pipe location, a water inlet pipe is connected to the lower end of the rotating shaft, and a water pump is connected to the external water inlet pipe.

[0012] Furthermore, a cleaning brush is provided on the rotating shaft, and the cleaning brush is located below the filter screen.

[0013] Furthermore, the cleaning brush and the spray pipe are misaligned.

[0014] Furthermore, the cooling mechanism includes a support plate, on which a threaded rod is threadedly connected, a guide rod is slidably provided, and a cooling plate is fixedly provided on the guide rod. The cooling plate is rotatably connected to the free end of the threaded rod. The cooling plate is provided with multiple rows of first cooling holes, and the cooling plate is connected to the air outlet of the air pump through an air pipe.

[0015] Furthermore, the first cooling holes in two adjacent rows on the cooling plate are staggered.

[0016] Furthermore, the cooling mechanism is provided in two symmetrical sets.

[0017] Furthermore, the side sealing conveyor roller is rotatably mounted on the frame via a drive shaft. Both the drive shaft and the side sealing conveyor roller are hollow structures and are connected to each other. A second cooling hole is provided on the side wall of the side sealing conveyor roller. The drive shaft is connected to the air outlet of the air pump via an air pipe.

[0018] Furthermore, the frame is provided with a cover, the longitudinal section of which is an arc-shaped structure, and the side sealing conveyor roller is rotatably disposed inside the cover.

[0019] The technical solution provided by this utility model has the following beneficial effects:

[0020] 1. The cooling airflow is pre-treated by the filter screen to prevent it from being blown towards the high-temperature heat sealing edge; the filter screen is cleaned in real time by the cleaning brush to remove the powder adhering to the filter screen, realizing daily synchronous cleaning driven by airflow and ensuring the filter screen is unobstructed; and the filter screen is sprayed and rinsed by the spray pipe connected to the hollow rotating shaft to thoroughly remove stubborn powder embedded in the filter screen gaps.

[0021] 2. The cooling mechanism is used to specifically cool the heat-sealed edge, so that the sealing temperature is reduced to a suitable range for heat cutting, which completely avoids the problems of stringing and inability to cut during high-temperature sealing and heat cutting; it not only ensures the appearance integrity of the individual small bag packaging, but also prevents the packaging material from wrapping around the cutting mechanism, ensuring the continuous and stable operation of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a heat-sealing and cooling device for a vertical packaging machine, as shown in the front view, according to an embodiment of this utility model.

[0023] Figure 2 This is a rear view schematic diagram of the overall structure of a heat-sealing and cooling device for a vertical packaging machine according to an embodiment of the present utility model.

[0024] Figure 3 A cross-sectional view of the filter box and drive shaft of a heat-sealing and cooling device for a vertical packaging machine, as proposed in an embodiment of this utility model.

[0025] Figure 4 This is a cross-sectional view of the filter box of a heat-sealing and cooling device for a vertical packaging machine, as proposed in an embodiment of this utility model.

[0026] Figure 5 A schematic diagram showing the position and structure of the spray pipe and cleaning brush of a heat-sealing cooling device for a vertical packaging machine according to an embodiment of this utility model;

[0027] Figure 6 This is a top-view perspective sectional view of the filter box of a heat-sealing and cooling device for a vertical packaging machine, as proposed in an embodiment of this utility model.

[0028] The components are as follows: 1. Frame; 2. Side sealing mechanism; 3. Horizontal sealing mechanism; 4. Cutting mechanism; 5. Side sealing conveyor roller; 6. Cooling mechanism; 7. Filter box; 8. Filter screen; 9. Spray pipe; 10. Sewage pipe; 11. Air pump; 12. Air inlet pipe; 13. Protective shell; 14. Drive shaft; 15. Impeller; 16. Driving bevel gear; 17. Rotating shaft; 18. Driven bevel gear; 19. Water inlet pipe; 20. Cleaning brush; 21. Support plate; 22. Threaded rod; 23. Guide rod; 24. Cooling plate; 25. First cooling hole; 26. Transmission shaft; 27. Second cooling hole; 28. Air pipe; 29. ​​Cover; 30. Drive gear.

[0029] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0030] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0031] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0032] See Figures 1-4 In this embodiment, the present invention provides a heat-sealing and cooling device for a vertical packaging machine, including a frame 1, two sets of side-sealing conveyor rollers 5, a cooling mechanism 6, a filter box 7, and an air pump 11. The frame 1 is provided with a side-sealing mechanism 2, a horizontal sealing mechanism 3, and a cutting mechanism 4 arranged sequentially from top to bottom. The side-sealing mechanism 2, the horizontal sealing mechanism 3, and the cutting mechanism 4 are all existing technologies, and their specific structures will not be described in detail. The two sets of side-sealing conveyor rollers 5 are rotatably mounted on the frame 1 and located between the side-sealing mechanism 2 and the horizontal sealing mechanism 3. The side edge of the heat-sealed packaging bag passes between the two sets of side-sealing conveyor rollers 5, and is conveyed by the cooperation of the two sets of side-sealing conveyor rollers 5. The cooling mechanism 6 is fixedly mounted on the frame 1 and located between the horizontal sealing mechanism 3 and the cutting mechanism 4. The cooling mechanism 6 cools the heat-sealed edge of the packaging bag. The filter box 7 is equipped with a filter screen 8 and a spray pipe 9. The spray pipe 9 is located above the filter screen 8 and is configured to rotate relative to the filter screen 8. The bottom of the filter box 7 is equipped with a drain pipe 10. The filter screen 8 can filter the gas entering the filter box 7. However, as the usage time increases, some of the sucked powder material will adhere to the filter screen 8, and may even cause the filter screen 8 to become clogged. The spray pipe 9 can clean the filter screen 8 by spraying, ensuring the filtration effect of the filter screen 8. The spray wastewater can be discharged through the drain pipe 10. The air pump 11 is connected to the filter box 7 at the air inlet and to the cooling mechanism 6 through a pipe at the air outlet. Under the action of the air pump 11, the gas is drawn into the filter box 7 and sprayed onto the heat-sealed edge of the packaging bag after being filtered by the filter screen 8, thereby cooling the heat-sealed edge.

[0033] In practical use, the raw material for the packaging bag is folded into a U-shaped cross-section and conveyed to the side-sealing mechanism 2. The side-sealing mechanism 2 seals the side of the opening, and the bag continues to be conveyed under the cooperation of two sets of side-sealing conveying rollers 5. The horizontal sealing mechanism 3 first horizontally seals the bottom edge of the packaging bag. The feeding mechanism feeds the powder material into the packaging bag with the top opening. As the raw material for the packaging bag continues to be conveyed, the top of the packaging bag moves to the horizontal sealing mechanism 3, which horizontally seals the top of the packaging bag. At the same time, it also horizontally seals the bottom edge of the next packaging bag. After horizontal sealing is completed, the bag is cooled by the cooling mechanism 6 and then conveyed to the cutting mechanism 4, where it is cut into individual small packages.

[0034] See Figure 4 In this embodiment, the lower part of the filter box 7 is provided with an air inlet pipe 12, and a protective shell 13 is fixedly provided inside the filter box 7. A drive shaft 14 is rotatably provided inside the protective shell 13. An impeller 15 is provided on the drive shaft 14. The impeller 15 is located above the filter screen 8. The airflow drawn by the air pump 11 acts on the impeller 15 to drive the drive shaft 14 to rotate. A driving bevel gear 16 is provided on the drive shaft 14. A rotating shaft 17 is rotatably provided on the bottom wall of the filter box 7. A driven bevel gear 18 is provided on the rotating shaft 17. The driven bevel gear 18 meshes with the driving bevel gear 16. When the drive shaft 14 rotates, it can drive the rotating shaft 17 to rotate. A spray pipe 9 is provided on the rotating shaft 17. The rotating shaft 17 is hollow from the lower end to the location of the spray pipe 9. A water inlet pipe 19 is connected to the lower end of the rotating shaft 17. A water pump is connected to the water inlet pipe 19.

[0035] See Figure 5 and Figure 6 In this embodiment, a cleaning brush 20 is provided on the rotating shaft 17, and the cleaning brush 20 is located below the filter screen 8. The cleaning brush 20 is offset from the spray pipe 9. Through this offset structure, when the spray pipe 9 sprays water to clean the filter screen 8, the spray wastewater will not fall directly onto the cleaning brush 20.

[0036] In practical use, under the action of air pump 11, air is drawn into filter box 7 through air inlet pipe 12. The airflow filtered by filter screen 8 acts on impeller 15, which drives drive shaft 14 to rotate. Through the meshing of driving bevel gear 16 and driven bevel gear 18, rotating shaft 17 is driven to rotate. Rotating shaft 17 drives cleaning brush 20 and spray pipe 9 to rotate. The rotating cleaning brush 20 cleans filter screen 8 from the lower surface of filter screen 8, meeting daily filtration needs. At regular intervals, water is pumped into rotating shaft 17, and water is sprayed onto filter screen 8 through spray pipe 9 to thoroughly clean the powder embedded in filter screen 8.

[0037] See Figure 1In this embodiment, the cooling mechanism 6 includes a support plate 21, a threaded rod 22 threadedly connected to the support plate 21, a guide rod 23 slidably mounted on the support plate 21, and a cooling plate 24 fixedly mounted on the guide rod 23. The cooling plate 24 is rotatably connected to the free end of the threaded rod 22. The cooling plate 24 has multiple rows of first cooling holes 25 and is connected to the outlet of the air pump 11 via an air pipe 28. Adjacent rows of first cooling holes 25 on the cooling plate 24 are staggered to expand the cooling coverage area. Two sets of cooling mechanisms 6 are symmetrically arranged, and the two sets of cooling mechanisms 6 cool the packaging bag from both sides.

[0038] In practical use, the air pump 11 delivers airflow to the cooling plate 24 through the air pipe 28, and sprays it onto the packaging bag through the first cooling hole 25 to cool the heat-sealed edge of the packaging bag. Furthermore, the distance between the cooling plate 24 and the packaging bag can be adjusted simply by rotating the threaded rod 22, driven by the threaded rod 22 and guided by the guide rod 23.

[0039] See Figures 1-3 In this embodiment, the side sealing conveyor roller 5 is rotatably mounted on the frame 1 via the drive shaft 26. Both the drive shaft 26 and the side sealing conveyor roller 5 are hollow structures and are connected to each other. A second cooling hole 27 is provided on the side wall of the side sealing conveyor roller 5. The drive shaft 26 is connected to the air outlet of the air pump 11 via the air pipe 28.

[0040] Specifically, the cooling plate 24 and the drive shaft 26 can be connected to the air outlet of the air pump 11 via a four-way pipe. Two sets of meshing drive gears 30 are provided on the two sets of drive shafts 26, enabling directional transmission between them. In a specific embodiment, a rotary motor is mounted on the frame 1, and the output shaft of the rotary motor and one set of drive shafts 26 are driven by a belt.

[0041] In practical use, under belt drive, the rotating motor drives a set of drive shafts 26 to rotate. Through the meshing of two sets of drive gears 30, the two sets of drive shafts 26 can be driven to rotate in opposite directions, thereby driving the two sets of side sealing conveyor rollers 5 to rotate in opposite directions. The airflow output by the air pump 11 enters the side sealing conveyor rollers 5 through the air pipe 28 and the drive shaft 26, and is sprayed obliquely upwards onto the side sealing edge of the packaging bag through the second cooling hole 27 to cool the side sealing edge of the packaging bag.

[0042] See Figure 1 In this embodiment, the frame 1 is provided with a cover 29. The longitudinal section of the cover 29 is an arc-shaped structure. The side sealing conveyor roller 5 is rotatably disposed inside the cover 29. The cover 29 can prevent the airflow from the second cooling hole 27 of the two sets of side sealing conveyor rollers 5 that are far apart from each other from causing dust to fly in the working environment.

[0043] 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.

[0044] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A vertical packaging machine heat-seal cooling device, characterized by, include: The frame (1) is provided with a side sealing mechanism (2), a horizontal sealing mechanism (3) and a cutting mechanism (4) from top to bottom. Two sets of side sealing conveyor rollers (5) are mounted on the frame (1) in a relative rotational manner and are located between the side sealing mechanism (2) and the horizontal sealing mechanism (3); The cooling mechanism (6) is fixed on the frame (1) and located between the horizontal sealing mechanism (3) and the cutting mechanism (4); A filter box (7) is provided with a filter screen (8) and a spray pipe (9). The spray pipe (9) is located above the filter screen (8) and is configured to rotate relative to the filter screen (8). A drain pipe (10) is provided at the bottom of the filter box (7). An air pump (11) has its air inlet end connected to a filter box (7) and its air outlet end connected to a cooling mechanism (6) via a pipe.

2. The heat-sealing and cooling device for a vertical packaging machine according to claim 1, characterized in that: The filter box (7) is provided with an air inlet pipe (12) at the bottom. A protective shell (13) is fixedly provided inside the filter box (7). A drive shaft (14) is rotatably provided inside the protective shell (13). An impeller (15) is provided on the drive shaft (14). The impeller (15) is located above the filter screen (8). An active bevel gear (16) is provided on the drive shaft (14). A rotating shaft (17) is rotatably provided on the bottom wall of the filter box (7). A driven bevel gear (18) is provided on the rotating shaft (17). The driven bevel gear (18) meshes with the active bevel gear (16). A spray pipe (9) is provided on the rotating shaft (17). The rotating shaft (17) is hollow from the bottom to the location of the spray pipe (9). A water inlet pipe (19) is connected to the bottom of the rotating shaft (17). A water pump is connected to the water inlet pipe (19).

3. The heat-sealing and cooling device for a vertical packaging machine according to claim 2, characterized in that: A cleaning brush (20) is provided on the rotating shaft (17), and the cleaning brush (20) is located below the filter screen (8).

4. The heat-sealing and cooling device for a vertical packaging machine according to claim 3, characterized in that: The cleaning brush (20) is offset from the spray pipe (9).

5. The heat-sealing and cooling device for a vertical packaging machine according to claim 1, characterized in that: The cooling mechanism (6) includes a support plate (21), a threaded rod (22) is threadedly connected to the support plate (21), a guide rod (23) is slidably provided on the support plate (21), a cooling plate (24) is fixedly provided on the guide rod (23), the cooling plate (24) is rotatably connected to the free end of the threaded rod (22), the cooling plate (24) is provided with multiple rows of first cooling holes (25), and the cooling plate (24) is connected to the air outlet of the air pump (11) through an air pipe (28).

6. The heat-sealing and cooling device for a vertical packaging machine according to claim 5, characterized in that: The first cooling holes (25) of two adjacent rows on the cooling plate (24) are staggered.

7. The heat-sealing and cooling device for a vertical packaging machine according to claim 6, characterized in that: The side sealing conveyor roller (5) is rotatably mounted on the frame (1) via a drive shaft (26). Both the drive shaft (26) and the side sealing conveyor roller (5) are hollow structures and are connected. A second cooling hole (27) is provided on the side wall of the side sealing conveyor roller (5). The drive shaft (26) is connected to the air outlet of the air pump (11) via an air pipe (28).

8. The heat-sealing and cooling device for a vertical packaging machine according to claim 7, characterized in that: The frame (1) is provided with a cover (29), the longitudinal section of the cover (29) is an arc-shaped structure, and the side sealing conveyor roller (5) is rotatably disposed inside the cover (29).

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