Vacuum packaging machine with simultaneous crease prevention and flattening

Abstract

The present application relates to the technical field of vacuum packaging machines, and specifically provides a synchronous anti-wrinkle and flattening vacuum packaging machine, which comprises a packaging machine body, a lid is rotatably installed on the top of the packaging machine body, a sealed cavity is formed between the packaging machine body and the lid, a shell is fixed to the inner top wall of the lid, a cavity is formed between the shell and the inner top wall of the lid, an air bag plate is installed on the bottom surface of the shell, two third air ducts are communicated with the air bag plate, the two third air ducts penetrate through the bottom of the shell and are fixedly communicated with hollow spheres, the hollow spheres are fixed to the inner bottom wall of the shell, solid blocking balls are rotatably arranged in the interiors of the two hollow spheres, air guide holes are formed in the interiors of the solid blocking balls, and a driving mechanism for driving the two solid blocking balls to synchronously rotate is arranged in the interior of the cavity. Through the arrangement of the driving mechanism, the downward pressing action of the air bag plate and the vacuumizing process can be synchronously started, and the downward pressing speed is matched with the vacuum degree rising speed in the cavity.

Description

Technical Field

[0001] This invention relates to the field of vacuum packaging machine technology, and specifically provides a vacuum packaging machine with synchronous anti-wrinkle and leveling capabilities. Background Technology

[0002] Vacuum packaging is a common packaging process in the food industry. It involves removing air from the packaging bag and then heat-sealing it to achieve oxygen-free preservation, moisture-proof and dust-proof storage of the product. The 700-type double-chamber vacuum packaging machine, as a mainstream piece of equipment for small and medium-sized production scenarios, is widely used for the batch packaging of soft foods such as seafood, steak, and ready-to-eat meals due to its compact structure and ease of operation.

[0003] Existing vacuum packaging machines commonly suffer from packaging bag wrinkling defects when packaging soft and easily deformable products: During the vacuuming stage, a high-speed airflow is formed in the sealed chamber, which lifts the packaging bag and product upwards, causing the product to shift and stack inside the bag, and the packaging bag to be unevenly stretched and deformed; after the heat sealing process is completed, the above deformation is transformed into irreversible wrinkles, which not only damages the flatness of the packaging appearance, but may also cause uneven stress at the seal, reducing the reliability of the seal.

[0004] Existing technologies are mainly improved through three types of solutions: First, the rigid pressure plate solution, which adds a rigid pressure plate to the inside of the cover and presses down to flatten the product after vacuuming. This solution is a post-treatment, and wrinkles have already formed during the vacuuming process. It can only improve the surface flatness and cannot eliminate the deformation at the root. Moreover, the rigid material is easy to damage soft and fragile products. Second, the spring-type pressing device, which relies on the spring force to drive the pressure plate to hold the product. However, its pressure is fixed and the distribution is not uniform. During high-speed vacuuming, the product is still easily moved by the airflow. There is also a risk of crushing the product when the pressure is too high, which limits the scope of application. Third, reducing the vacuuming speed and weakening the airflow impact by extending the vacuuming time. This solution will reduce production efficiency and can only reduce the degree of wrinkles. It cannot completely avoid the formation of wrinkles and has poor economic benefits. Summary of the Invention

[0005] To address the aforementioned shortcomings, this invention provides a vacuum packaging machine with simultaneous anti-wrinkle and leveling capabilities. Its purpose is to solve the problem that existing vacuum packaging machines easily cause irreversible wrinkles in packaging bags during the vacuuming process, and that existing improvement solutions cannot simultaneously achieve anti-wrinkle effects, protection of soft products, and production efficiency.

[0006] To achieve the above objectives, the present invention provides a vacuum packaging machine for synchronous anti-wrinkle and leveling, comprising a packaging machine body, a lid rotatably mounted on the top of the packaging machine body, forming a sealed chamber for placing products between the packaging machine body and the lid, a shell fixedly connected to the inner top wall of the lid, and a cavity formed between the shell and the inner top wall of the lid, an airbag plate mounted on the bottom surface of the shell, two third air guide pipes fixedly connected to the top of the airbag plate, the other ends of the two third air guide pipes penetrating the bottom of the shell and fixedly connected to hollow spheres, the hollow spheres fixedly connected to the inner bottom wall of the shell, solid baffles rotatably mounted inside the two hollow spheres, and air guide holes opened inside the two solid baffles, and a drive mechanism for driving the two solid baffles to rotate synchronously is provided inside the cavity.

[0007] Preferably, one of the hollow spheres has an air inlet pipe fixedly connected to its top, the other end of which passes through the cover and is connected to an external air pump; the other hollow sphere has an exhaust pipe fixedly connected to its top, the other end of which passes through the cover and extends to the outside of the cover.

[0008] Preferably, the driving mechanism includes a rectangular column fixedly connected inside the housing, a through hole inside the rectangular column, a power ball movably disposed inside the through hole, a slider fixedly connected to the outer surface of the power ball, a groove inside the rectangular column for the slider to slide horizontally, a connecting plate fixedly connected to the other end of the slider, a guide column fixedly connected inside the housing, a connecting plate slidably connected to the outside of the guide column, a toothed plate fixedly connected to the other end of the connecting plate, and the toothed plate slidably disposed on the inner bottom wall of the housing.

[0009] Preferably, a drive shaft is rotatably mounted inside the two hollow spheres. One end of each drive shaft is fixedly connected to the outer surface of the two solid stop spheres, and the other end of each drive shaft is coaxially fixedly connected to a gear. Both gears mesh with a gear plate.

[0010] Preferably, a connecting rod is rotatably installed inside each of the two hollow spheres. One end of each connecting rod is fixedly connected to the outer surface of the two solid blocking spheres, and the other end of each connecting rod is fixedly connected to a circular plate. A torsion spring is fixedly connected to the outer surface of each circular plate, and the other end of each torsion spring is fixedly connected to the outer surface of the two hollow spheres.

[0011] Preferably, baffles for sealing the slide groove are fixedly connected to both sides of the slider, and two slots are opened inside the rectangular column, with the two baffles respectively inserted into the two slots on opposite sides.

[0012] Preferably, a vacuum pump is installed inside the packaging machine body. The suction end of the vacuum pump is fixedly connected to a four-way pipe. The first port of the four-way pipe is fixedly connected to a first suction pipe. The other end of the first suction pipe passes through the packaging machine body and extends into the interior of the sealed chamber. The second port of the four-way pipe is fixedly connected to a second suction pipe. The third port of the four-way pipe is fixedly connected to a third suction pipe. The other end of the third suction pipe is fixedly connected to a telescopic pipe. The other end of the telescopic pipe is fixedly connected to a first air guide pipe. The other end of the first air guide pipe is fixedly connected to the side of the housing and communicates with a through hole.

[0013] Preferably, a second air guide tube is fixedly connected to the other side of the housing, and the other end of the second air guide tube is fixedly connected to one side of the cover. A circular hole is opened inside the housing, and the circular hole, the first air guide tube, the through hole and the second air guide tube are concentric. A filter screen is installed inside the second air guide tube.

[0014] Preferably, the bottom surface of the airbag plate is provided with a silicone layer.

[0015] Preferably, two sets of symmetrical heat sealing devices are installed on the top of the packaging machine body.

[0016] The purpose of this invention is to provide a vacuum packaging machine with simultaneous anti-wrinkle and leveling capabilities, which has the following beneficial effects: ① By setting a driving mechanism, this invention enables the downward pressing action of the airbag plate to be started synchronously with the vacuuming process. The pressing speed matches the vacuum level increase speed in the chamber, and the flexible pressing can be completed before the airflow lifts the product, avoiding product displacement and packaging bag deformation, thus eliminating wrinkles from the source. At the same time, the airbag-type flexible pressing structure provides uniform and gentle pressing force, which will not damage soft or fragile products and is suitable for packaging of various types of products.

[0017] ② This invention uses the airflow generated by vacuuming as a power source to synchronously drive the rotation of two solid baffle balls, realizing the synchronous switching of the inflation and deflation air paths. It does not require additional electronic control components and power devices, has a simple overall structure, strong synchronous operation, low failure rate, and can effectively control the cost of equipment modification. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a partial cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the internal structure of the lid of the present invention; Figure 5 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 6 This is a schematic diagram of the connection between the gear and the toothed plate of the present invention; Figure 7 This is a schematic diagram illustrating the combination of the hollow sphere and the solid blocking sphere of the present invention; Figure 8 This is a schematic diagram of the rectangular column and dynamic ball of the present invention.

[0019] In the diagram: 1. Packaging machine body; 2. Lid; 3. Heat sealing device; 4. Sealed chamber; 5. Shell; 6. Cavity; 7. Airbag plate; 8. Silicone layer; 9. Rectangular column; 10. Through hole; 11. First air guide pipe; 12. Second air guide pipe; 13. Filter screen; 14. Vacuum pump; 15. Four-way pipe; 16. First suction pipe; 17. Second suction pipe; 18. Third suction pipe; 19. Telescopic pipe; 20. Power ball; 21. Slider; 22. Baffle; 23. Slot; 24. Connecting plate; 25. Guide column; 26. Third air guide pipe; 27. Hollow sphere; 28. Air inlet pipe; 29. ​​Exhaust pipe; 30. Solid baffle ball; 31. Air guide hole; 32. Drive shaft; 33. Torsion spring; 34. Circular plate; 35. Gear; 36. Gear plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] like Figure 1 - Figure 8 As shown, the present invention provides a vacuum packaging machine for synchronous anti-wrinkle and leveling, including a packaging machine body 1. A cover 2 is rotatably mounted on the top of the packaging machine body 1, and a sealed chamber 4 for placing products is formed between the packaging machine body 1 and the cover 2. A housing 5 is fixedly connected to the inner top wall of the cover 2, and a cavity 6 is formed between the housing 5 and the inner top wall of the cover 2. An air bladder plate 7 is installed on the bottom surface of the housing 5. Two third air guide pipes 26 are fixedly connected to the top of the air bladder plate 7. The other ends of the two third air guide pipes 26 penetrate the bottom of the housing 5 and are fixedly connected to a hollow sphere 27. The hollow sphere 27 is fixedly connected to the inner bottom wall of the housing 5. The two hollow spheres 27 each have a solid baffle ball 30 rotatably mounted inside. Each of the two solid baffle balls 30 has an air guide hole 31 inside. The cavity 6 is equipped with a drive mechanism for driving the two solid baffle balls 30 to rotate synchronously. The sealed chamber 4 provides a closed space for vacuuming and heat sealing operations. The airbag plate 7 is an actuator that directly holds the product and achieves the downward pressing action by inflating. The two hollow spheres 27 correspond to the inflation and deflation air paths, respectively. The rotation of the solid baffle balls 30 controls the opening and closing of the air paths. The drive mechanism can realize the synchronous rotation of the two solid baffle balls 30, ensuring the synchronous switching of inflation and deflation actions.

[0022] As a further explanation of this embodiment, two sets of symmetrical heat sealing devices 3 are installed on the top of the packaging machine body 1. The two sets of heat sealing devices 3 correspond to the two workstations of the double chamber packaging machine, and can perform heat sealing operations on the packaging bags of the two workstations respectively. This adapts to the alternating operation mode of the double chamber vacuum packaging machine and improves the overall packaging efficiency. The heat sealing device is mainly composed of a heating strip, a heat insulation strip and a pressing component. After the heating strip is energized and heated, it melts the sealing material of the packaging bag, and works with the pressing component to achieve sealing. This is the prior art and will not be described in detail here.

[0023] One of the hollow spheres 27 has an air inlet pipe 28 fixedly connected to its top. The other end of the air inlet pipe 28 passes through the cover 2 and is connected to an external air pump. The other hollow sphere 27 has an exhaust pipe 29 fixedly connected to its top. The other end of the exhaust pipe 29 slides through the cover 2 and extends to the outside of the cover 2. The air inlet pipe 28 is the inflation channel for the airbag plate 7. The gas output by the external air pump can enter the cavity 6 through the air inlet pipe 28, the hollow sphere 27 and the third air guide pipe 26, causing the airbag plate 7 to expand and press down. The exhaust pipe 29 is the exhaust channel for the airbag plate 7. After the operation is completed, the gas in the airbag plate 7 can be discharged through the exhaust pipe 29, realizing the retraction and reset of the airbag plate 7. The two air paths are independent of each other and are controlled by the corresponding solid baffle 30, respectively, without interfering with each other.

[0024] As a further explanation of this embodiment, the driving mechanism includes a rectangular column 9 fixedly connected inside the housing 5. A through hole 10 is provided inside the rectangular column 9, and a power ball 20 is movably disposed inside the through hole 10. A slider 21 is fixedly connected to the outer surface of the power ball 20. A groove for horizontal sliding of the slider 21 is provided inside the rectangular column 9. A connecting plate 24 is fixedly connected to the other end of the slider 21. A guide post 25 is fixedly connected inside the housing 5. The connecting plate 24 is slidably connected to the outside of the guide post 25. A toothed plate 36 is fixedly connected to the other end of the connecting plate 24. The toothed plate 36 is slidably mounted on the inner bottom wall of the housing 5. The through hole 10 inside the rectangular column 9 is an airflow channel. When the airflow generated by vacuuming flows through the through hole 10, it will drive the power ball 20 to move axially along the through hole 10. The power ball 20 transmits power to the connecting plate 24 through the slider 21. The guide column 25 provides guidance for the movement of the connecting plate 24 and the toothed plate 36, ensuring that the toothed plate 36 slides smoothly in the horizontal direction and avoiding offset and jamming. This structure uses the vacuuming airflow as the only power source and does not require additional driving components, realizing the power linkage between the vacuuming action and the pressing action.

[0025] In order to ensure that the airflow generated by the vacuum can successfully drive the power ball 20 when it flows through the through hole 10, the size of the power ball 20 can be adjusted according to the airflow size during the working process, so that the power ball 20 and the inner wall of the through hole 10 maintain a suitable fit clearance.

[0026] As a further explanation of this embodiment, drive shafts 32 are rotatably mounted inside the two hollow spheres 27. One end of each drive shaft 32 is fixedly connected to the outer surface of the two solid baffle balls 30, and the other end of each drive shaft 32 is coaxially fixedly connected to a gear 35. Both gears 35 mesh with a toothed plate 36. When the toothed plate 36 slides horizontally, it can simultaneously drive the two gears 35 to rotate synchronously. The gears 35 drive the solid baffle balls 30 to rotate inside the hollow spheres 27 through the drive shafts 32, thereby changing the orientation of the air guide hole 31 and realizing the switching of the air passage opening and closing state. Through the meshing transmission between the toothed plate 36 and the two gears 35, it can be ensured that the rotation angles of the two solid baffle balls 30 are completely consistent, realizing the synchronous switching of the exhaust air passage closing when the inflation air passage is open and the exhaust air passage opening when the inflation air passage is closed, thus improving the synchronization accuracy of the action.

[0027] As a further explanation of this embodiment, connecting rods are rotatably installed inside the two hollow spheres 27. One end of each connecting rod is fixedly connected to the outer surface of the two solid blocking balls 30, and the other end of each connecting rod is fixedly connected to a circular plate 34. Torsion springs 33 are fixedly connected to the outer surface of each circular plate 34, and the other end of each torsion spring 33 is fixedly connected to the outer surface of the two hollow spheres 27. The torsion springs 33 are reset components. During the vacuuming operation, the toothed plate 36 drives the gear 35 to rotate, and the torsion springs 33 store energy as the circular plate 34 rotates. When the vacuuming stops and the airflow power disappears, the torsion springs 33 release their elasticity, causing the solid blocking balls 30 to rotate in the opposite direction and reset. At the same time, the power ball 20 is driven back to its initial position through the transmission between the gear 35 and the toothed plate 36. No additional reset drive element is required, and the structure is simple and reliable.

[0028] As a further explanation of this embodiment, baffles 22 for sealing the slide groove are fixedly connected to both sides of the slider 21. Two slots 23 are opened inside the rectangular column 9. The two baffles 22 are inserted into the two slots 23 respectively with their opposite sides facing each other. The baffles 22 slide synchronously with the slider 21, always covering and sealing the connection between the slide groove and the through hole 10, preventing the airflow in the through hole 10 from leaking from the slide groove, ensuring the airflow pressure in the through hole 10 is stable, so that the power ball 20 can obtain a stable driving force and improve the reliability of the drive mechanism.

[0029] As a further explanation of this embodiment, a vacuum pump 14 is installed inside the packaging machine body 1. The suction end of the vacuum pump 14 is fixedly connected to a four-way pipe 15. The first port of the four-way pipe 15 is fixedly connected to a first suction pipe 16. The other end of the first suction pipe 16 passes through the packaging machine body 1 and extends into the sealed chamber 4. The second port of the four-way pipe 15 is fixedly connected to a second suction pipe 17. The third port of the four-way pipe 15 is fixedly connected to a third suction pipe 18. The other end of the third suction pipe 18 is fixedly connected to a telescopic pipe 19. The other end of the telescopic pipe 19 is fixedly connected to a first air guide pipe 11. The other end of the first air guide pipe 11 is fixedly connected to the side of the housing 5 and communicates with the through hole 10. The vacuum pump 14 provides vacuuming power for the entire machine. The force is divided into three air extraction paths through the four-way pipe 15. The first air extraction pipe 16 directly extracts air from the sealed chamber 4 to achieve overall vacuuming of the chamber. The second air extraction pipe 17 corresponds to the chamber of another station, which is suitable for the dual-chamber alternating operation mode. Preferably, by setting valves in the first air extraction pipe 16 and the second air extraction pipe 17, only one air extraction pipe is opened for air extraction during single-station operation, while the other is kept closed. The two work alternately without interfering with each other. The third air extraction pipe 18 is connected to the through hole 10 inside the housing 5 through the first air guide pipe 11 via the telescopic pipe 19 to provide airflow power to the drive mechanism. The telescopic pipe 19 can extend and retract with the opening and closing of the cover 2 to avoid damage to the pipe when the cover 2 rotates, thus ensuring the stability of the air connection.

[0030] As a further explanation of this embodiment, a second air guide pipe 12 is fixedly connected to the other side of the housing 5. The other end of the second air guide pipe 12 is fixedly connected to one side of the cover 2. A circular hole is opened inside the housing 5, and the circular hole, the first air guide pipe 11, the through hole 10 and the second air guide pipe 12 are concentrically arranged. A filter screen 13 is installed inside the second air guide pipe 12. The arrangement of the second air guide pipe 12 can form a continuous airflow in the through hole 10, providing a continuous driving force for the power ball 20. The concentrically arranged holes can reduce airflow resistance and ensure stable airflow velocity. The filter screen 13 can filter dust and debris, preventing debris from entering the through hole 10 and causing blockage, thereby improving the operational stability and service life of the drive mechanism.

[0031] As a further explanation of this embodiment, a silicone layer 8 is provided on the bottom surface of the airbag plate 7. The silicone layer 8 is in direct contact with the surface of the packaging bag. The silicone material has a moderate coefficient of friction, so it will not scratch the surface of the packaging bag when pressed. At the same time, it can increase the friction of pressing and prevent the product from shifting during the pressing process. The silicone material is soft, which can further improve the flexibility of pressing and enhance the protective effect on soft and fragile products.

[0032] Working principle In use, place the packaging bag containing the product flat on the work station of the packaging machine body 1, adjust the position of the packaging bag so that the sealing end is aligned with the heat sealing device 3, and then close the lid 2 to form a closed sealed chamber 4 between the lid 2 and the packaging machine body 1. Start the vacuum pump 14 to begin vacuuming. The vacuum pump 14 draws air from the sealed chamber 4 through the first suction pipe 16, so that the vacuum degree in the sealed chamber 4 gradually increases. At the same time, it draws air from the through hole 10 through the third suction pipe 18, the telescopic pipe 19 and the first air guide pipe 11, so that a directional airflow is formed in the through hole 10. The airflow drives the power ball 20 to move horizontally along the through hole 10 towards the suction end.

[0033] When the power ball 20 moves, it drives the connecting plate 24 to slide along the guide post 25 via the slider 21, which in turn drives the toothed plate 36 to move horizontally. The toothed plate 36 drives two gears 35 to rotate synchronously through meshing transmission. The gears 35 drive the solid stop ball 30 to rotate inside the hollow ball 27 via the drive shaft 32. At the same time, the circular plate 34 rotates with the connecting rod, causing the torsion spring 33 to twist and store force. In the initial state, the air guide hole 31 of the solid stop ball 30 corresponding to the air intake pipe 28 is misaligned with the air intake pipe 28, and the inflation air passage is in a closed state. The air guide hole 31 of the solid stop ball 30 corresponding to the exhaust pipe 29 is misaligned. 1. Aligned with the exhaust pipe 29, the exhaust air passage is in the open state. When the toothed plate 36 moves to the set position, the two solid ball bearings 30 rotate to the corresponding angle, and the air guide hole 31 corresponding to the air intake pipe 28 is aligned with the air intake pipe 28. The inflation air passage is opened, and the gas output by the external inflation pump enters the cavity 6 through the air intake pipe 28, the hollow ball 27 and the third air guide pipe 26, causing the airbag plate 7 to gradually expand and press down. At the same time, the air guide hole 31 corresponding to the exhaust pipe 29 is misaligned with the exhaust pipe 29, and the exhaust air passage is closed to ensure that the air pressure in the cavity 6 is stable and the airbag plate 7 continues to be in a compressed state.

[0034] The expansion and depressurization speed of the airbag plate 7 matches the vacuum lifting speed in the sealed chamber 4. Before the airflow in the chamber causes the product and packaging bag to float, the silicone layer 8 at the bottom of the airbag plate 7 is already steadily pressed against the surface of the packaging bag, keeping the product stably confined inside the packaging bag and preventing the product from shifting and the packaging bag from being pulled and deformed. When the vacuum degree in the sealed chamber 4 reaches the set value, the vacuum pump 14 is turned off, and the vacuuming and airbag inflation stop simultaneously. At the same time, the heat sealing device 3 is started to heat and seal the opening of the packaging bag.

[0035] After heat sealing, the vacuum in the sealed chamber 4 is broken, the airflow in the through hole 10 disappears, the torsion spring 33 releases its elastic force to drive the circular plate 34 and the solid stop ball 30 to rotate in opposite directions and reset, and then drive the gear plate 36, the connecting plate 24 and the power ball 20 back to the initial position through the gear 35. At this time, the inflation air passage is closed and the exhaust air passage is opened. The gas in the cavity 6 is discharged through the third air guide pipe 26, the hollow ball 27 and the exhaust pipe 29. The airbag plate 7 retracts and resets. Then the cover 2 is opened and the packaged product is taken out. The next packaging operation can be carried out. The above operations can be carried out alternately in the dual-chamber station.

[0036] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the scope of protection of this invention.

Claims

1. A vacuum packaging machine for simultaneous anti-wrinkle and leveling, comprising a packaging machine body (1), characterized in that, The top of the packaging machine body (1) is rotatably mounted with a cover (2), and a sealed chamber (4) for placing products is formed between the packaging machine body (1) and the cover (2). The inner top wall of the cover (2) is fixedly connected to a shell (5), and a cavity (6) is formed between the shell (5) and the inner top wall of the cover (2). An airbag plate (7) is installed on the bottom surface of the shell (5). The top of the airbag plate (7) is fixedly connected to two third air guide pipes (26). The other ends of the two third air guide pipes (26) penetrate the bottom of the shell (5) and are fixedly connected to a hollow sphere (27). The hollow sphere (27) is fixedly connected to the inner bottom wall of the shell (5). Solid baffles (30) are rotatably mounted inside the two hollow spheres (27). Air guide holes (31) are opened inside the two solid baffles (30). A drive mechanism for driving the two solid baffles (30) to rotate synchronously is provided inside the cavity (6). One of the hollow spheres (27) has an air inlet pipe (28) fixedly connected to its top, and the other end of the air inlet pipe (28) passes through the cover (2) and is connected to an external air pump. The other hollow sphere (27) has an exhaust pipe (29) fixedly connected to its top, and the other end of the exhaust pipe (29) passes through the cover (2) and extends to the outside of the cover (2). The driving mechanism includes a rectangular column (9) fixedly connected inside the housing (5). The rectangular column (9) has a through hole (10) inside. A power ball (20) is movably arranged inside the through hole (10). A slider (21) is fixedly connected to the outer surface of the power ball (20). A groove for the slider (21) to slide horizontally is opened inside the rectangular column (9). A connecting plate (24) is fixedly connected to the other end of the slider (21). A guide column (25) is fixedly connected inside the housing (5). The connecting plate (24) is slidably connected to the outside of the guide column (25). A toothed plate (36) is fixedly connected to the other end of the connecting plate (24), and the toothed plate (36) is slidably arranged on the inner bottom wall of the housing (5). Two hollow spheres (27) are rotatably mounted with drive shafts (32). One end of each drive shaft (32) is fixedly connected to the outer surface of two solid ball bearings (30). The other end of each drive shaft (32) is coaxially fixedly connected with a gear (35). Both gears (35) mesh with a toothed plate (36). A connecting rod is rotatably installed inside each of the two hollow spheres (27). One end of each connecting rod is fixedly connected to the outer surface of each of the two solid blocking balls (30). A circular plate (34) is fixedly connected to the other end of each connecting rod. A torsion spring is fixedly connected to the outer surface of each of the two circular plates (34). The other end of each torsion spring is fixedly connected to the outer surface of each of the two hollow spheres (27).

2. The vacuum packaging machine with synchronous anti-wrinkle and leveling function according to claim 1, characterized in that, Both sides of the slider (21) are fixedly connected with baffles (22) for sealing the groove. The rectangular column (9) has two slots (23) inside. The two baffles (22) are respectively inserted into the two slots (23) with their opposite sides facing away from each other.

3. The vacuum packaging machine with synchronous anti-wrinkle and leveling function according to claim 2, characterized in that, The packaging machine body (1) is equipped with a vacuum pump (14). The suction end of the vacuum pump (14) is fixedly connected to a four-way pipe (15). The first port of the four-way pipe (15) is fixedly connected to a first suction pipe (16). The other end of the first suction pipe (16) passes through the packaging machine body (1) and extends into the sealed chamber (4). The second port of the four-way pipe (15) is fixedly connected to a second suction pipe (17). The third port of the four-way pipe (15) is fixedly connected to a third suction pipe (18). The other end of the third suction pipe (18) is fixedly connected to a telescopic pipe (19). The other end of the telescopic pipe (19) is fixedly connected to a first air guide pipe (11). The other end of the first air guide pipe (11) is fixedly connected to the side of the housing (5) and communicates with the through hole (10).

4. The vacuum packaging machine with synchronous anti-wrinkle and leveling function according to claim 3, characterized in that, The other side of the housing (5) is fixedly connected to a second air guide pipe (12), and the other end of the second air guide pipe (12) is fixedly connected to one side of the cover (2). A round hole is opened inside the housing (5), and the round hole, the first air guide pipe (11), the through hole (10) and the second air guide pipe (12) are concentric. A filter screen (13) is installed inside the second air guide pipe (12).

5. The vacuum packaging machine with synchronous anti-wrinkle and leveling function according to claim 4, characterized in that, The bottom surface of the airbag plate (7) is provided with a silicone layer (8).

6. The vacuum packaging machine with synchronous anti-wrinkle and leveling function according to claim 1, characterized in that, The top of the packaging machine body (1) is equipped with two sets of symmetrical heat sealing devices (3).

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