A fully automatic air-pumping packaging machine

Abstract

The utility model discloses a full -automatic air extraction packaging machine, include: frame, dust removal storehouse, bag clamping device, filter core pipe fitting and gas circuit device, dust removal storehouse, bag clamping device and filter core pipe fitting are installed in the frame, and the dust removal storehouse bottom is equipped with the opening, still is equipped with and is connected with dust collector interface and dust collector, filter core pipe fitting inside is equipped with filter core, and one end of filter core pipe fitting inserts dust removal storehouse, and other end is linked together with gas circuit device, gas circuit device has two kinds of state of positive suction and reverse blowing, when being in positive suction state, bag clamping device will open and be close in dust removal storehouse bottom opening below with packaging bag bag mouth, and the gas in packaging bag is taken away through filter core pipe fitting, when being in reverse suction state, bag clamping device will be tight and close with packaging bag bag mouth, and the dust of filter core in filter core pipe fitting is blown out and enters dust removal storehouse in reverse, is taken out by dust collector through dust collector interface. The utility model reduces dust overflow, improves the working environment, and promotes the environmental protection performance.

Description

Technical Field

[0001] This utility model relates to the field of automatic packaging equipment, and more specifically, to a fully automatic vacuum packaging machine. Background Technology

[0002] The widespread use of ultrafine powders across various industries has increased the difficulty of packaging these materials. The small particle size and high gas content make dust leakage easy. After packaging, the high gas content inside the bags makes stacking difficult, requiring extended periods of rest and resulting in low production efficiency. Currently, packaging machines for these materials offer solutions such as mechanical exhaust and negative pressure extraction. Mechanical exhaust uses a method of clamping the bag opening and pressing it down, which can expel some gas, but dust overflows along with the exhaust, increasing the difficulty of dust control. Negative pressure extraction solutions often use flat tubes or filter cartridges. Flat tubes, lacking a filter screen, allow a large amount of dust to be drawn into the vacuum pump filter cartridge, requiring frequent cleaning. Furthermore, after repeated use, powder can clog the filter pores of filter cartridges, affecting extraction efficiency.

[0003] In the prior art, such as the publication number CN220430598U, the dust removal filter of this application uses pneumatic, electric and pulse backflushing methods to shake off the dust that is stuck on the filter element and cannot pass through the filter element into the packaging bag. However, after the dust removal filter uses compressed air for backflushing, dust will be generated, which will increase the cleaning difficulty and affect the packaging speed.

[0004] Therefore, it is necessary to provide a fully automatic vacuum packaging machine to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a fully automatic vacuum packaging machine that overcomes the aforementioned defects in the prior art.

[0006] The technical solution to achieve the purpose of this utility model is: a fully automatic vacuum packaging machine, comprising:

[0007] The system includes a frame, a dust collection chamber, a bag clamping device, filter cartridges, and an air passage device. The dust collection chamber, bag clamping device, and filter cartridges are installed on the frame. The dust collection chamber has an opening at the bottom and an interface for connecting to a dust collector. The filter cartridges contain filter cartridges, with one end inserted into the dust collection chamber and the other end connected to the air passage device.

[0008] The air path device has two states: forward air intake and reverse air blowing. When in the forward air intake state, the bag clamping device opens the bag opening and presses it tightly against the bottom opening of the dust collection chamber, and the gas in the bag is sucked away through the filter element tube. When in the reverse air intake state, the bag clamping device tightens and closes the bag opening, and the dust in the filter element tube is blown out in the reverse direction into the dust collection chamber, and then sucked out by the dust collector through the dust collector interface.

[0009] Furthermore, a first cylinder is fixedly installed on the frame, and the output end of the first cylinder is fixedly connected to the filter element tube through a first connector and drives the filter element tube to rise and fall.

[0010] Furthermore, the bag clamping device includes a bracket, two clamping assemblies installed below the bracket, and a bag clamping door assembly; the bag clamping door assembly is located below the dust collection chamber, and when the bag clamping door assembly is opened, the filter element tube can pass through the bag clamping door assembly; the two clamping assemblies are installed on the left and right sides of the bag clamping door assembly.

[0011] Furthermore, a clamp driving assembly is installed on the bracket, and the output end of the clamp driving assembly is fixedly connected to the two clamp assemblies respectively. The clamp driving assembly drives the two clamp assemblies to tighten or loosen the opening of the packaging bag in the left and right direction.

[0012] Furthermore, a bag clamping door drive assembly is also installed on the bracket. The output end of the bag clamping door drive assembly is fixedly connected to the bag clamping door assembly and controls the opening or closing of the bag clamping door assembly.

[0013] Furthermore, it also includes a bag-holding device, which includes a conveyor frame, a pallet drive assembly fixed to the conveyor frame, and a pallet connected to the output end of the pallet drive assembly. The pallet is located below the bag-holding device, and the pallet drive assembly drives the pallet to rise and fall.

[0014] Furthermore, the air path device includes an air intake component and a backflush air component; the air intake component and the backflush air component are respectively connected to the filter element tube through air path pipes, the air path pipe of the air intake component is provided with a first valve, and the air path pipe of the backflush air component is provided with a second valve.

[0015] Furthermore, the suction assembly is a vacuum pump; the first valve is a pneumatic butterfly valve; the backflush assembly is an air compressor; and the second valve is a pulse valve.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects:

[0017] (1) This utility model integrates the frame, dust collection chamber, bag clamping device, filter element fittings, and air passage device through an integrated structural design, realizing integrated operation of air extraction, dust removal, and self-cleaning. It is equipped with an air passage device that can perform forward suction and reverse blowing, and in conjunction with the liftable filter element fittings, it can automatically back-blow and clean the filter element after air extraction, effectively preventing filter element clogging, extending service life, and ensuring high efficiency and stability in each air extraction operation. The setting of the dust collection chamber and its interface design with the external dust collector ensure that the entire air extraction and cleaning process is carried out in a closed environment, significantly reducing dust spillage, improving the working environment, and enhancing environmental performance and operational safety.

[0018] (2) This utility model sets a first cylinder on the frame and drives the filter element tube to rise and fall through the first connecting piece, realizing the automated control of filter element insertion and withdrawal from the packaging bag. This structure has precise action and rapid response, ensuring that the filter element can be accurately inserted into the bag opening for efficient air extraction, avoiding insufficient air extraction or damage to the packaging bag due to positional deviation, improving the reliability and accuracy of equipment operation, while reducing the requirements for manual operation and enhancing the automation level of the system.

[0019] (3) The bag clamping device of this utility model is supported by a bracket and equipped with two clamping assemblies and a bag clamping door assembly to work together to form a stable clamping and channel opening mechanism. The bag clamping door assembly is located below the dust removal chamber and can be opened when needed to allow the filter element tube to pass through, realizing the dual functions of sealing and passage; the clamping assemblies on both sides ensure that the bag opening is fixed, ensuring the stability of the vacuuming process.

[0020] (4) The present invention is equipped with a clamp drive component, which realizes automatic tightening and loosening of the bag opening. This design not only ensures that the bag opening is firmly clamped, but also stretches the bag opening appropriately after the air is evacuated, which helps to expel residual air and keep the bag shape flat, improving the appearance quality of the packaging. At the same time, it facilitates subsequent sealing or transfer operations, further optimizing the packaging process.

[0021] (5) The introduction of the bag clamping door drive assembly in this utility model enables the automatic opening and closing of the bag clamping door assembly. This structure is linked to the filter element lifting action, automatically opening the channel before the filter element is inserted and closing it promptly after insertion to maintain the airtightness of the dust collection chamber, effectively preventing dust leakage. Automated control reduces manual intervention, improves the coordination and safety of the entire machine operation, ensures that each process is executed in sequence, and avoids the risks caused by misoperation.

[0022] (6) This utility model adds a bag support device, including a conveyor frame, a tray drive assembly, and a tray, which can stably support the packaging bag during the air extraction process. The tray rises and falls under the action of the drive assembly, synchronized with the filter element insertion action, and provides bottom support when the filter element is deeply inserted into the bag, realizing fully automatic air extraction, improving efficiency, and saving labor.

[0023] (7) The vacuum pump of this utility model provides stable negative pressure to achieve rapid air extraction; the pneumatic butterfly valve opens and closes quickly and has a large flow rate, making it suitable for continuous air extraction conditions; the air compressor provides a high-pressure air source for backflushing; and the pulse valve can release high-pressure gas instantly in milliseconds to powerfully remove dust accumulated on the surface of the filter element. This combination fully utilizes the advantages of each component, achieving a perfect combination of efficient air extraction and powerful self-cleaning, ensuring long-term stable operation of the equipment, and significantly reducing maintenance frequency and downtime. Attached Figure Description

[0024] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0025] Figure 1 This is a perspective view of the present invention.

[0026] Figure 2 This is a partial sectional view.

[0027] Figure 3 This is the front view of the bag clamping device.

[0028] Figure 4 This is a rear view of the bag clamping device.

[0029] Figure 5 This is a perspective view of the pocket door drive assembly.

[0030] Figure 6 This is a 3D view of the tray drive assembly.

[0031] The labels in the attached diagram are: 1, frame; 1-1, first cylinder; 1-2, first connecting piece;

[0032] 2. Dust collection chamber; 2-1. Dust collector interface;

[0033] 3. Bag clamping device; 3-1. Support frame; 3-2. Clamping clamp assembly; 3-3. Bag clamping door assembly;

[0034] 3-4. Clamp drive assembly; 3-4-1. Second cylinder; 3-4-2. Clamp drive rod; 3-4-3. First clamp link; 3-4-4. Lead screw; 3-4-5. Second clamp link; 3-4-6. Third clamp link; 3-4-7. Fourth clamp link; 3-4-8. Fifth clamp link;

[0035] 3-5. Bag clamping door drive assembly; 3-5-1. Third cylinder; 3-5-2. First L-shaped connecting rod of bag clamping door; 3-5-3. First connecting rod of bag clamping door; 3-5-4. Second connecting rod of bag clamping door; 3-5-5. Rotating block of bag clamping door; 3-5-6. Third connecting rod of bag clamping door; 3-5-7. Fourth connecting rod of bag clamping door; 3-5-8. Fifth connecting rod of bag clamping door; 3-5-9. Sixth connecting rod of bag clamping door;

[0036] 4. Filter element fittings; 4-1. Filter element;

[0037] 5. Air circuit device; 5-1. Intake assembly; 5-2. First valve; 5-3. Backflush assembly; 5-4. Second valve;

[0038] 6. Bag support device; 6-1. Conveyor frame; 6-2. Pallet drive assembly; 6-2-1. Fourth cylinder; 6-2-2. First drive rod of pallet; 6-2-3. First connecting rod of pallet; 6-2-4. First L-shaped connecting rod of pallet; 6-2-5. Second connecting rod of pallet; 6-2-6. Second L-shaped connecting rod of pallet;

[0039] 6-3. Pallet. Detailed Implementation

[0040] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of 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. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 this utility model.

[0045] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0046] (Example 1)

[0047] See Figures 1 to 2 A fully automatic vacuum packaging machine includes: a frame 1, a dust removal chamber 2, a bag clamping device 3, a filter element fitting 4, an air passage device 5, and a bag support device 6. The dust collection chamber 2 is fixedly installed below the frame 1. The dust collection chamber 2 is provided with an interface 2-1 for docking with the dust collector. The bag clamping device 3 is located below the frame 1 and clamps the packaging bag below the dust collection chamber 2. The filter element tube 4 is provided with a filter element 4-1 inside. The filter element 4-1 is selected as a polymer nano filter element or a metal mesh filter element. The filter element tube 4 can be lifted and lowered on the frame 1, and one end can pass through the dust collection chamber 2 and extend into the packaging bag. The air passage device 5 is connected to the end of the filter element tube 4 away from the dust collection chamber 2 through an air passage pipe. The air passage device 5 can draw air in the forward direction or blow air in the reverse direction. The bag support device 6 includes a conveyor frame 6-1, a tray drive assembly 6-2 fixed to the conveyor frame 6-1, and a tray 6-3 connected to the output end of the tray drive assembly 6-2. The tray 6-3 is located below the bag clamping device 3. The tray drive assembly 6-2 drives the tray 6-3 to rise and fall.

[0048] The air circuit device 5 includes an intake assembly 5-1 and a backflush assembly 5-3. The intake assembly 5-1 and the backflush assembly 5-3 are respectively connected to the filter element fitting 4 through air circuit pipes. A first valve 5-2 is provided on the air circuit pipe of the intake assembly 5-1, and a second valve 5-4 is provided on the air circuit pipe of the backflush assembly 5-3. The intake assembly 5-1 is a vacuum pump or vacuum generator; the first valve 5-2 is a pneumatic butterfly valve; the backflush assembly 5-3 is an air compressor; and the second valve 5-4 is a pulse valve.

[0049] Specifically, see Figure 2 A first cylinder 1-1 is fixedly installed on the frame 1. The output end of the first cylinder 1-1 is fixedly connected to the filter element tube 4 through the first connector 1-2 and drives the filter element tube 4 to rise and fall.

[0050] Specifically, see Figure 3 The bag clamping device 3 includes a bracket 3-1, two clamping assemblies 3-2 installed below the bracket 3-1, and a bag clamping door assembly 3-3; the bag clamping door assembly 3-3 is located below the dust collection chamber 2, and when the bag clamping door assembly 3-3 is opened, the filter element tube 4 can pass through the bag clamping door assembly 3-3; the two clamping assemblies 3-2 are installed on the left and right sides of the bag clamping door assembly 3-3.

[0051] Specifically, see Figure 4 The bracket 3-1 is equipped with a clamp drive assembly 3-4. The output end of the clamp drive assembly 3-4 is fixedly connected to two clamp assemblies 3-2 respectively. The clamp drive assembly 3-4 drives the two clamp assemblies 3-2 to tighten or loosen the bag opening in the left and right direction.

[0052] Specifically, the clamp drive assembly 3-4 includes a second cylinder 3-4-1 fixed to the bracket 3-1. The output end of the second cylinder 3-4-1 is rotatably connected to a clamp drive rod 3-4-2. The clamp drive rod 3-4-2 has a threaded slot inside, and a lead screw 3-4-4 is rotatably connected to the threaded slot. A first clamp connecting rod 3-4-4 is also fixedly connected to the lead screw 3-4-4, which is positioned at the middle. A second clamp connecting rod 3-4-5 and a fourth clamp connecting rod 3-4-7 are rotatably connected to both ends of the lead screw 3-4-4. The clamp assembly 3-2 is an electric clamp, and the two clamp assemblies 3-4-2 are... -2 is rotatably connected to the bracket 3-1 via the third clamping link 3-4-6 and the fifth clamping link 3-4-8 respectively. The two ends of the third clamping link 3-4-6 and the fifth clamping link 3-4-8 are rotatably connected to the bracket 3-1 and the clamp 3-2 respectively. The other end of the second clamping link 3-4-5 is rotatably connected to the middle position of the third clamping link 3-4-6, and the other end of the fourth clamping link 3-4-7 is rotatably connected to the middle position of the fifth clamping link 3-4-8. The second clamping link 3-4-5 and the fourth clamping link 3-4-7 are arranged parallel to each other. Through the extension and retraction of the second cylinder 3-4-1, the clamping assemblies 3-2 on both sides are driven to move in the same direction or in opposite directions.

[0053] Specifically, see Figure 5 The bracket 3-1 is also equipped with a bag clamping door drive assembly 3-5. The output end of the bag clamping door drive assembly 3-5 is fixedly connected to the bag clamping door assembly 3-3 and controls the opening or closing of the bag clamping door assembly 3-3. The bag clamping door drive assembly 3-5 includes a third cylinder 3-5-1 fixed to the bracket 3-1. The output end of the third cylinder 3-5-1 is rotatably connected to a first L-shaped connecting rod 3-5-2 of the bag clamping door. The middle inflection point of the first L-shaped connecting rod 3-5-2 is fixedly connected to a third connecting rod 3-5-6 of the bag clamping door. Both ends of the third connecting rod 3-5-6 are rotatably connected to the bracket 3-1. The other end of the first L-shaped connecting rod 3-5-2 is rotatably connected to the first connecting rod 3-5-3 of the bag clamping door. The first connecting rod 3-5-3 of the door is also rotatably connected to the second connecting rod 3-5-4 of the bag clamping door. The other end of the second connecting rod 3-5-4 of the bag clamping door is also fixedly connected to the bag clamping door connecting block 3-5-5. The fourth connecting rod 3-5-7, the fifth connecting rod 3-5-8, and the sixth connecting rod 3-5-9 of the bag clamping door are respectively arranged symmetrically with the other side of the third connecting rod 3-5-6 of the bag clamping door, which is connected symmetrically with the first L-shaped connecting rod 3-5-2, the first connecting rod 3-5-3, and the second connecting rod 3-5-4 of the bag clamping door. The bag clamping door assembly 3-3 is opened or closed by the extension and retraction drive of the third cylinder 3-5-1.

[0054] Specifically, see Figure 6The pallet drive assembly 6-2 includes a fourth cylinder 6-2-1 fixed to the conveyor frame 6-1. The output end of the fourth cylinder 6-2-1 is rotatably connected to a first pallet drive rod 6-2-2. The other end of the first pallet drive rod 6-2-2 is fixedly connected to the middle of a first pallet connecting rod 6-2-3. Both ends of the first pallet connecting rod 6-2-3 are rotatably connected to the conveyor frame 6-1. Symmetrically fixed to both ends of the first pallet connecting rod 6-2-3 are first pallet L-shaped connecting rods 6-2-4. The first pallet connecting rod 6-2-3 is fixedly connected to the pallet... The inflection point of the first L-shaped link 6-2-4 of the pallet is rotatably connected to one end of the first link 6-2-3 of the pallet, which is rotatably connected to the bottom of the pallet 6-3. The other end of the first link 6-2-3 is rotatably connected to one end of the second link 6-2-5 of the pallet. The other end of the second link 6-2-5 is rotatably connected to the other end of the second L-shaped link 6-2-6 of the pallet. The inflection point of the second L-shaped link 6-2-6 is rotatably connected to the conveyor frame 6-1, and the other end of the second L-shaped link 6-2-6 is rotatably connected to the bottom of the pallet 6-3. The extension and retraction drive of the fourth cylinder 6-2-1 drives the lifting and lowering of the pallet 6-3.

[0055] The process in this embodiment is as follows: The packaging bag is conveyed to the bottom of the dust collection chamber 2 by the bag support device 6, with the tray 6-3 facing upwards. The clamps on both sides of the bag clamping device 3 clamp the two sides of the packaging bag. The bag clamping door assembly 3-3 opens, separating the bag opening. The filter element tube 4 extends into the packaging bag. The first valve 5-2 opens, and the second valve 5-4 closes. The filter element tube 4 enters the packaging bag to draw in air, which is then extracted by a vacuum pump. After a certain period of time, the filter element tube 4 retracts, the bag clamping door assembly 3-3 closes, and the clamping assembly 3-2 tightens the bag opening under the action of a cylinder. The packaging bag is then conveyed to the next station via the bag support device 6. The filter element tube 4 retracts into the dust collection chamber 2, the first valve 5-2 closes, and the second valve 5-4 opens, automatically cleaning the filter element of the filter element tube 4. The dust collector in the dust collection chamber 2 is then turned on, and the dust in the dust collection chamber 2 is cleaned. This combination fully leverages the advantages of each component, achieving a perfect blend of efficient air extraction and powerful self-cleaning, ensuring long-term stable operation of the equipment and significantly reducing maintenance frequency and downtime.

[0056] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fully automatic vacuum packaging machine, characterized in that, include: The machine includes a frame (1), a dust collection chamber (2), a bag clamping device (3), a filter element tube (4), and an air passage device (5). The dust collection chamber (2), the bag clamping device (3), and the filter element tube (4) are installed on the frame (1). The dust collection chamber (2) has an opening at the bottom and is also provided with an interface (2-1) for connecting to the dust collector. The filter element tube (4) contains a filter element. One end of the filter element tube (4) is inserted into the dust collection chamber (2), and the other end is connected to the air passage device (5). The air path device (5) has two states: forward air intake and reverse air blowing. When it is in the forward air intake state, the bag clamping device (3) opens the bag opening and sticks it to the bottom opening of the dust removal chamber (2), and the gas in the bag is sucked away through the filter tube (4). When it is in the reverse air intake state, the bag clamping device (3) tightens and closes the bag opening, and the dust in the filter element in the filter tube (4) is blown out in the reverse direction into the dust removal chamber (2) and sucked out by the dust collector through the dust collector interface (2-1).

2. The fully automatic vacuum packaging machine according to claim 1, characterized in that: A first cylinder (1-1) is fixedly installed on the frame (1). The output end of the first cylinder (1-1) is fixedly connected to the filter element tube (4) through the first connector (1-2) and drives the filter element tube (4) to rise and fall.

3. The fully automatic vacuum packaging machine according to claim 1, characterized in that: The bag clamping device (3) includes a bracket (3-1), two clamping assemblies (3-2) installed below the bracket (3-1), and a bag clamping door assembly (3-3); the bag clamping door assembly (3-3) is located below the dust removal chamber (2), and when the bag clamping door assembly (3-3) is opened, the filter element tube (4) can pass through the bag clamping door assembly (3-3); the two clamping assemblies (3-2) are installed on the left and right sides of the bag clamping door assembly (3-3).

4. The fully automatic vacuum packaging machine according to claim 3, characterized in that: A clamp drive assembly (3-4) is installed on the bracket (3-1). The output end of the clamp drive assembly (3-4) is fixedly connected to the two clamp assemblies (3-2) respectively. The clamp drive assembly (3-4) drives the two clamp assemblies (3-2) to tighten or loosen the opening of the packaging bag in the left and right direction.

5. The fully automatic vacuum packaging machine according to claim 3, characterized in that: The bracket (3-1) is also equipped with a bag clamping door drive assembly (3-5). The output end of the bag clamping door drive assembly (3-5) is fixedly connected to the bag clamping door assembly (3-3) and controls the opening or closing of the bag clamping door assembly (3-3).

6. The fully automatic vacuum packaging machine according to claim 1, characterized in that: It also includes a bag holding device (6), which includes a conveyor frame (6-1), a pallet drive assembly (6-2) fixed on the conveyor frame (6-1), and a pallet (6-3) connected to the output end of the pallet drive assembly (6-2). The pallet (6-3) is located below the bag clamping device (3), and the pallet drive assembly (6-2) drives the pallet (6-3) to rise and fall.

7. The fully automatic vacuum packaging machine according to claim 1, characterized in that: The air circuit device (5) includes an air intake assembly (5-1) and a backflush assembly (5-3); the air intake assembly (5-1) and the backflush assembly (5-3) are respectively connected to the filter element fitting (4) through air circuit pipes. The air circuit pipe of the air intake assembly (5-1) is provided with a first valve (5-2), and the air circuit pipe of the backflush assembly (5-3) is provided with a second valve (5-4).

8. The fully automatic vacuum packaging machine according to claim 7, characterized in that: The suction assembly (5-1) is a vacuum pump; the first valve (5-2) is a pneumatic butterfly valve; the backflush assembly (5-3) is an air compressor; and the second valve (5-4) is a pulse valve.

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