Heat shrink film sealing machine

Abstract

The utility model relates to the field of sealing machines, in particular to a heat shrink film sealing machine which comprises a working box, the two sides of the working box are fixedly connected with sucking pumps, and the input ends of the sucking pumps are fixedly connected with first hoses. The air exhaust mechanism comprises a first connecting block, the inner wall of the first connecting block is rotationally connected with a connecting rod, one end of a first hose is fixedly connected to the two sides of the connecting rod, one end of the connecting rod is fixedly connected with a first electric telescopic rod, and one end of the first electric telescopic rod is fixedly connected with a suction pipe; and one end of the connecting rod is fixedly connected with a second hose. Air in the first hose and the second hose is pumped out through the air pump, so that air in a packaging bag is pumped out through the suction pipe, vacuum is formed in the packaging bag, when the equipment is used for sealing the food packaging bag, air can be pumped out through the structure, air in the packaging bag is pumped out, and the packaging bag is sealed. Therefore, air is isolated and food is prevented from being oxidized.

Description

Technical Field

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

[0002] A sealing machine is a machine that seals containers containing products. After the product is put into the packaging container, in order to seal and preserve the product, maintain the product quality, and prevent product loss, the container needs to be sealed. Therefore, the existing heat shrink film sealing machine has been continuously innovated and developed. It can be seen that the current heat shrink film sealing machine basically meets people's needs, but there are still some problems.

[0003] For example, patent document CN219601767U discloses a heat shrink film sealing machine that includes two support plates, a fixed plate fixedly connected between the two support plates, a top plate fixedly mounted on the top of the fixed plate, a conveying mechanism on the outside of the top plate, and a heat sealing assembly on the top of the support plates. The conveying mechanism includes two drive shafts. The beneficial effects of this heat shrink film sealing machine are: by placing the plastic film on the conveyor belt, and positioning the part of the plastic film to be sealed between the pressure plate and the connecting plate, the elastic force of the spring contraction causes the pressure plate to clamp and position the plastic film at the sealing point, preventing skewing during conveying due to movement or external factors. The heating plate is aligned with the hot melt tank, and the electric push rod drives the heating component to extend the heating plate into the hot melt tank to perform heat shrink sealing on the plastic film held by the pressure plate and the connecting plate, forming a continuous production line and improving production efficiency. By setting the heating component and the push rod, the push rod pushes the heating component to extend the heating plate into the hot melt tank to perform heat shrink sealing on the plastic film held by the pressure plate and the connecting plate, forming a continuous production line and improving production efficiency.

[0004] However, in actual use, the above-mentioned device has problems because existing packaging bags are divided into various types, and one of them, food packaging bags, needs to have the air removed from inside the bag during sealing to prevent the air inside the bag from coming into contact with the food and causing the food to spoil faster. However, the device has difficulty removing the air from the packaging bag when sealing it. Therefore, a heat shrink film sealing machine is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a heat shrink film sealing machine to solve the problem mentioned in the background art that the equipment is difficult to remove the air from the packaging bag when sealing the packaging bag.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat shrink film sealing machine, including a working box, with air pumps fixedly connected to both sides of the working box, and a first flexible hose fixedly connected to the input end of the air pumps;

[0007] The suction mechanism includes a first connecting block, a connecting rod rotatably connected to the inner wall of the first connecting block, and one end of a first hose fixedly connected to both sides of the connecting rod. One end of the connecting rod is fixedly connected to a first electric telescopic rod, one end of the first electric telescopic rod is fixedly connected to a straw, and one end of the connecting rod is fixedly connected to a second hose, with one end of the second hose fixedly connected to one side of the straw.

[0008] Preferably, a second connecting block is fixedly connected to the bottom of the connecting rod, a telescopic rod is rotatably connected to the bottom of the second connecting block, a spring is provided on the inner wall of the telescopic rod, a slider is rotatably connected to the bottom of the telescopic rod, a first sliding groove is provided on the inner wall of the work box, and the surface of the slider is slidably connected to the inner wall of the sliding groove.

[0009] Preferably, a control panel body is provided on one side of the top of the work box, and a knob is rotatably connected to one side of the control panel body.

[0010] Preferably, a guide plate is fixedly connected to the bottom of one side of the work box, and a limit plate is fixedly connected to the inner bottom wall of the work box.

[0011] Preferably, the pressure plate is made of copper.

[0012] Preferably, movable blocks are fixedly connected to both sides of the pressure plate, and second sliding grooves are provided on both sides of the inner wall of the work box, with the surface of the movable blocks slidably connected to the inner wall of the second sliding grooves.

[0013] Preferably, the heating component is electrically connected to the pressure plate, so that the heating component heats the pressure plate to achieve the heat required for sealing.

[0014] Preferably, the limiting plate is made of martensitic steel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. An air pump extracts air from the first and second hoses, which in turn draws air out of the packaging bag through the suction tube, creating a near-vacuum state. This air extraction reduces oxidation of the food inside, effectively preserving its color, aroma, flavor, and nutritional value. The extraction mechanism can also be moved via an electric telescopic rod. As air is extracted from the food bag, the suction nozzle retracts, sealing the opening of the nozzle. This prevents interference between the extraction and sealing processes, allowing them to proceed simultaneously and improving efficiency. The equipment boasts high sealing efficiency, and its structure allows for the movement of the suction tube via an electric telescopic rod, enabling the selection of whether to perform vacuum extraction based on actual needs. This significantly improves the equipment's practicality. Furthermore, the support structure at the bottom and the connecting block at one end of the suction structure allow the suction tube to rotate within the working chamber and be supported by the bottom structure, ensuring that the suction tube remains positioned between the two sealing structures. This facilitates workers placing the packaging bag opening onto the suction tube surface. Moreover, when using this equipment for vacuum sealing, there is no need to manually adjust the position of the suction tube, thus preventing accidental injury to workers during machine operation.

[0017] 2. The spring pushes the telescopic rod to lift the suction structure, positioning the end of the straw between the two sealing structures. During sealing, after inserting the straw into the food packaging bag, the two sealing structures press and seal the bag. When removing the bag after sealing, the spring pushes the telescopic rod to reset the straw, preventing it from sticking to the bottom of the work box during subsequent suction steps and requiring manual adjustment. This reduces the risk of hand injury and prevents contamination of the straw from direct contact. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural view of the device of this utility model;

[0019] Figure 2 This is a cross-sectional view of the working box of this utility model;

[0020] Figure 3 This is a three-dimensional structural view of the pressure plate of this utility model;

[0021] Figure 4 This is a three-dimensional view of the air extraction structure of the device of this utility model;

[0022] Figure 5 This is a cross-sectional view of the telescopic rod of this utility model.

[0023] In the diagram: 1. Working box; 2. First connecting block; 3. Connecting rod; 4. First hose; 5. Air pump; 6. First electric telescopic rod; 7. Suction tube; 8. Second hose; 9. Second connecting block; 10. Telescopic rod; 11. Spring; 12. Slider; 13. First slide groove; 14. Control panel body; 15. Knob; 16. Guide plate; 17. Limiting plate; 18. Second electric telescopic rod; 19. Pressure plate; 20. Heating assembly; 21. Movable block; 22. Second slide groove. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-5 One embodiment provided by this utility model:

[0026] A heat shrink film sealing machine includes: a working box 1, air pumps 5 are fixedly connected to both sides of the working box 1, a first hose 4 is fixedly connected to the input end of the air pumps 5, a second electric telescopic rod 18 is fixedly connected to one side of the top of the working box 1, a pressure plate 19 is fixedly connected to the bottom end of the second electric telescopic rod 18, and a heating component 20 is fixedly connected to the middle of the top of the pressure plate 19.

[0027] The suction mechanism includes a first connecting block 2, a connecting rod 3 rotatably connected to the inner wall of the first connecting block 2, and one end of a first hose 4 fixedly connected to both sides of the connecting rod 3. One end of the connecting rod 3 is fixedly connected to a first electric telescopic rod 6, one end of the first electric telescopic rod 6 is fixedly connected to a straw 7, and one end of the connecting rod 3 is fixedly connected to a second hose 8, with one end of the second hose 8 fixedly connected to one side of the straw 7.

[0028] Before the air inside the packaging bag needs to be extracted, the straw 7 is placed inside the packaging bag through the inner opening. Then, the opening is pressed and sealed by the equipment. During the pressing process, the sealing structure presses down the packaging bag and the straw 7, causing the straw 7 to drive the first electric telescopic rod 6 and the connecting rod 3 to rotate around the first connecting block 2. This causes the packaging bag and the straw 7 to adhere to the inner bottom wall of the working box 1. Then, the air pump 5 extracts the air from the first hose 4 and the second hose 8. After the air in the first hose 4 and the second hose 8 is extracted, the air inside the packaging bag is drawn in by the straw 7, thus creating a vacuum inside the packaging bag. After the air inside the packaging bag is completely extracted, the straw 7 is moved by the extension and retraction of the first electric telescopic rod 6, thus retracting the straw 7 into the working box 1. Then, the second electric telescopic rod 18 drives the bottom pressure plate 19 to descend, thus clamping the packaging bag. The heating component 20 heats the pressure plate 19, thereby heating the opening of the packaging bag.

[0029] Furthermore, a second connecting block 9 is fixedly connected to the bottom of the connecting rod 3, and a telescopic rod 10 is rotatably connected to the bottom of the second connecting block 9. A spring 11 is provided on the inner wall of the telescopic rod 10, and a slider 12 is rotatably connected to the bottom of the telescopic rod 10. A first sliding groove 13 is provided on the inner bottom wall of the work box 1, and the surface of the slider 12 is slidably connected to the inner wall of the first sliding groove 13.

[0030] When sealing the packaging bag, the tilting of the connecting rod 3 compresses the telescopic rod 10 to retract, and causes the telescopic rod 10 to rotate within the slider 12 and the second connecting block 9, thereby tilting the telescopic rod 10. This causes the slider 12 at the bottom of the telescopic rod 10 to slide within the first groove 13, thus cooperating with the suction structure to tilt. When the sealing of the packaging bag is finished, the first electric telescopic rod 6 drives the straw 7 to retract. After the straw 7 is retracted into the working box 1, the spring 11 drives the telescopic rod 10 to reset. The reset of the telescopic rod 10 pushes the second connecting block 9 at the top to rise. The rise of the second connecting block 9 pushes the connecting rod 3 at the top to rotate within the first connecting block 2, thereby resetting the first electric telescopic rod 6 and the straw 7. After the straw 7 resets, it is lifted.

[0031] Furthermore, a control panel body 14 is provided on one side of the top of the work box 1, and a knob 15 is rotatably connected to one side of the control panel body 14.

[0032] The control panel body 14 and knob 15 can control the device.

[0033] Furthermore, a guide plate 16 is fixedly connected to the bottom of one side of the work box 1, and a limit plate 17 is fixedly connected to the inner bottom wall of the work box 1.

[0034] Furthermore, the pressure plate 19 is made of copper.

[0035] Furthermore, movable blocks 21 are fixedly connected to both sides of the pressure plate 19, and second sliding grooves 22 are provided on both sides of the inner wall of the work box 1, and the surface of the movable block 21 is slidably connected to the inner wall of the second sliding groove 22.

[0036] Furthermore, the heating component 20 is electrically connected to the pressure plate 19, so that the heating component 20 heats the pressure plate 19 to achieve the heat required for sealing.

[0037] Furthermore, the limiting plate 17 is made of martensitic steel.

[0038] The material of the limit plate 17 can withstand high temperatures.

[0039] When sealing the packaging bag, first place the packaging bag on top of the guide plate 16, and place the part of the packaging bag that needs to be sealed on top of the limiting plate 17. Then, push the bottom pressure plate 19 down by the second electric telescopic rod 18. When the pressure plate 19 descends, it slides in the second slide groove 22 through the movable blocks 21 on both sides. The descent of the pressure plate 19 causes the limiting plate 17 and the pressure plate 19 to clamp the packaging bag. Then, the heating component 20 heats the pressure plate 19, thereby heating the opening of the packaging bag to seal it. Then, the retraction of the second electric telescopic rod 18 drives the bottom pressure plate 19 to rise, removing the pressure plate 19 from the surface of the packaging bag.

[0040] Working principle: Before sealing the packaging bag using this device, the opening of the packaging bag is placed on the surface of the straw 7, and the packaging bag is pressed to the top of the limiting plate 17. Then, the second electric telescopic rod 18 drives the bottom pressure plate 19 to descend, thereby clamping the packaging bag and heating the opening. During the heating process, the air pump 5 removes the air from the first hose 4 and the second hose 8, thereby causing the straw 7 to remove the air from the packaging bag, thus creating a vacuum inside the packaging bag. Then, the first electric telescopic rod 6 retracts the straw 7 into the working box 1. Finally, the pressure plate 19 clamps and seals the opening of the straw 7 inside the packaging bag. Finally, the second electric telescopic rod 18 drives the pressure plate 19 to rise, thereby releasing the clamping of the packaging bag and completing the sealing of the packaging bag.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A heat shrink film sealing machine, characterized in that, Includes a work box (1), on both sides of the work box (1) are fixedly connected to a vacuum pump (5), the input end of the vacuum pump (5) is fixedly connected to a first hose (4), a second electric telescopic rod (18) is fixedly connected to one side of the top of the work box (1), a pressure plate (19) is fixedly connected to the bottom end of the second electric telescopic rod (18), and a heating component (20) is fixedly connected to the middle of the top of the pressure plate (19). The suction mechanism includes a first connecting block (2), a connecting rod (3) is rotatably connected to the inner wall of the first connecting block (2), and one end of the first hose (4) is fixedly connected to both sides of the connecting rod (3). One end of the connecting rod (3) is fixedly connected to a first electric telescopic rod (6), one end of the first electric telescopic rod (6) is fixedly connected to a straw (7), one end of the connecting rod (3) is fixedly connected to a second hose (8), and one end of the second hose (8) is fixedly connected to one side of the straw (7).

2. The heat shrink film sealing machine according to claim 1, characterized in that: The bottom of the connecting rod (3) is fixedly connected to a second connecting block (9), and the bottom of the second connecting block (9) is rotatably connected to a telescopic rod (10). The inner wall of the telescopic rod (10) is provided with a spring (11), and the bottom of the telescopic rod (10) is rotatably connected to a slider (12). The inner bottom wall of the work box (1) is provided with a first sliding groove (13), and the surface of the slider (12) is slidably connected to the inner wall of the first sliding groove (13).

3. The heat shrink film sealing machine according to claim 1, characterized in that: A control panel body (14) is provided on one side of the top of the work box (1), and a knob (15) is rotatably connected to one side of the control panel body (14).

4. A heat shrink film sealing machine according to claim 1, characterized in that: A guide plate (16) is fixedly connected to the bottom of one side of the work box (1), and a limit plate (17) is fixedly connected to the inner bottom wall of the work box (1).

5. A heat shrink film sealing machine according to claim 1, characterized in that: The pressure plate (19) is made of copper.

6. A heat shrink film sealing machine according to claim 5, characterized in that: Movable blocks (21) are fixedly connected to both sides of the pressure plate (19), and second sliding grooves (22) are provided on both sides of the inner wall of the work box (1), and the surface of the movable block (21) is slidably connected to the inner wall of the second sliding groove (22).

7. A heat shrink film sealing machine according to claim 1, characterized in that: The heating component (20) is electrically connected to the pressure plate (19), so that the heating component (20) heats the pressure plate (19) to achieve the heat required for sealing.

8. A heat shrink film sealing machine according to claim 4, characterized in that: The limiting plate (17) is made of martensitic steel.

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