A packaging device for new energy vehicle battery control circuit board

Abstract

The invention relates to a packaging device for a battery control circuit board of a new energy vehicle applied in the field of new energy vehicles. The device comprises a storage frame, an opening and closing mechanism, a lifting mechanism and a heat-sealing mechanism. A mounting seat and a mounting frame are installed on the upper end of the storage frame; the opening and closing mechanism is installed on the mounting seat, the opening and closing mechanism comprises an air pump, an air suction hood and a self-telescopic air guide component, the air suction hood is connected to the air pump through the self-telescopic air guide component, a side of the air suction hood away from the self-telescopic air guide component is densely covered with air holes, an air suction pipe is installed on the lifting mechanism, and the heat-sealing mechanism is installed on the mounting seat. The air pump, the air suction hood and the self-telescopic air guide component are cooperatively arranged, and the self-telescopic air guide component performs telescopic movement under the suction action of the air pump, and sequentially completes the opening and closing action of the packaging bag, the clamping and fixing action of the bag opening, and the air discharge action of the packaging bag body, thereby greatly reducing the number of electrical equipment required for circuit board packaging and reducing packaging energy consumption.

Description

Technical Field

[0001] The present invention relates to a packaging device, in particular to a packaging device for a new energy vehicle battery control circuit board applied in the field of new energy vehicles. Background Art

[0002] With the continuous improvement of new energy vehicle battery technology, the control circuit board, which is the most important component for controlling the battery, also needs higher performance to assist the power battery. In the existing battery control circuit board, in order to facilitate the protection of the circuit board, the circuit board generally needs to be packaged.

[0003] For example, the specification of the patent publication number CN113613398B discloses a packaging device for a new energy vehicle battery control circuit board, including a loading rack for placing circuit boards to be packaged, a packaging loading and unloading robot for taking and placing circuit boards to be packaged from the loading rack onto a packaging conveying device and taking and placing the packaged circuit boards from the packaging conveying device onto a unloading rack, a packaging conveying device for conveying circuit boards to be packaged into the packaging device and conveying the packaged circuit boards out of the packaging device, a packaging device for packaging the circuit boards and an unloading rack for placing the packaged circuit boards. Automatic loading, conveying, packaging and unloading are achieved by adopting automated packaging equipment, and the packaging conveying device makes a left-right reciprocating motion, thereby greatly accelerating the packaging efficiency of the circuit boards. No manual operation is required throughout the process, reducing the risk of contamination and damage to the circuit boards.

[0004] Based on the above search, combined with the prior art, it is found that the existing circuit board packaging equipment generally uses a special packaging bag for packaging, and the packaging steps are generally to open the bag, put the circuit board in, fix the exhaust end of the exhaust device at the bag mouth, and keep it sealed with the bag mouth, then use the exhaust device to extract the air inside the bag, and finally use the heating device to heat-seal the bag mouth. However, each of the above steps in the prior art generally requires a separate electrical device to complete, especially the opening and closing action of the bag mouth, which generally requires the cooperation of multiple electrical devices, resulting in high equipment cost and high energy consumption. Therefore, a packaging device for a new energy vehicle battery control circuit board is proposed to improve the above problems. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that each packaging step of the circuit board packaging equipment in the prior art generally requires separate electrical equipment to complete, especially the opening and closing action of the bag mouth, which generally requires the cooperation of multiple electrical equipment to complete, resulting in high equipment cost and high energy consumption.

[0006] In order to solve the above problems, the present invention provides a packaging device for a new energy vehicle battery control circuit board, comprising:

[0007] A storage frame, the upper end of which is provided with a mounting seat and a mounting frame;

[0008] The opening and closing mechanism is installed on the mounting seat. The opening and closing mechanism includes an air pump, an air suction hood and a self-telescopic air guide assembly. The air pump is installed on the mounting seat. Two air suction hoods and two self-telescopic air guide assemblies are provided. The two air suction hoods are respectively located on the top opposite sides of the storage frame. The two air suction hoods are respectively connected to the air pump through two self-telescopic air guide assemblies. The end surfaces of the two air suction hoods close to each other are densely covered with air holes to achieve:

[0009] The self-retractable air guide component performs a retractable movement under the suction action of the air pump. When the self-retractable air guide component is extended, the air suction hood is close to the packaging bag and sucks the packaging bag. When the self-retractable air guide component is contracted, the air suction hood opens the bag opening of the packaging bag.

[0010] A lifting mechanism is installed on the mounting frame, and an air suction pipe is installed on the lifting mechanism to drive the lifting action of the air suction pipe. The end surfaces of the two air suction hoods close to each other are both provided with half-pipe grooves adapted to the air suction pipe. When the air suction hood opens the bag opening of the packaging bag, the self-retractable air guide assembly is extended again to fix the air suction pipe at the bag opening of the packaging bag, and keep the outer wall of the air suction pipe sealed with the packaging bag.

[0011] The heat sealing mechanism is installed on the mounting seat and is located at the lower side of the opening and closing mechanism.

[0012] In the packaging equipment of the above-mentioned new energy vehicle battery control circuit board, an air pump, an air suction hood and a self-retractable air guide component are arranged in coordination. The self-retractable air guide component performs a telescopic movement under the suction action of the air pump. When the self-retractable air guide component is extended, the air suction hood is close to the packaging bag and sucks the packaging bag. When the self-retractable air guide component is contracted, the air suction hood opens the bag opening of the packaging bag. Thereafter, the air suction pipe is moved down to the inner side of the bag opening of the packaging bag by using the lifting mechanism. After the self-retractable air guide component is extended again, the air suction pipe is fixed at the bag opening of the packaging bag, and the outer wall of the air suction pipe is kept sealed with the packaging bag.

[0013] As a further supplement to the present application, the length of the suction hood is consistent with the horizontal length of the storage frame; this can ensure that the bag opening of the packaging bag is fully opened, facilitating the smooth placement of the circuit board.

[0014] As a further supplement to the present application, the self-retractable air guide assembly includes a fixed tube, a movable tube and a wind wheel;

[0015] One end of the fixed tube is connected to the output end of the air pump, and the other end of the fixed tube is threadedly sleeved on the outer side of the movable tube. The fixed tube and the movable tube are provided with matching bidirectional threads;

[0016] The wind wheel is installed on the inner wall of the movable tube, the air suction hood is rotatably installed on the end of the movable tube away from the fixed tube through a sealed bearing, and a guide structure is installed between the air suction hood and the fixed tube;

[0017] The side end of the movable tube away from the fixed tube is provided with an air supply hole, a sealing cover is rotatably installed at the air supply hole, and a torsion spring is installed between the sealing cover and the movable tube; when the air pump inhales air in the state that the suction hood does not contact the packaging bag, the gas is sucked in from the air holes on the suction hood, the inhaled gas drives the wind wheel to rotate, and the wind wheel drives the movable tube to rotate; because the fixed tube remains stationary, the rotating movable tube drives the suction hood to move horizontally under the action of the bidirectional thread; when the suction hood moves close to the packaging bag, the packaging bag is sucked into the air of the suction hood by the negative pressure. On the hole side, since the air hole is blocked at this time, under the action of the increased negative pressure, the sealing cover opens inward, and the external air is sucked in through the air supplement hole. The airflow passing through makes the wind wheel continue to rotate, thereby causing the movable tube to rotate and shrink at the same time, and the bag body parts on both sides of the bag opening of the packaging bag are opened outward by using the suction hood. At this time, the circuit board can be placed, and the suction pipe is lowered. The air pump continues to suck air, so that the movable tube is extended again until the suction hood clamps the suction pipe. At this time, the air pump stops sucking air to maintain the sealing effect between the outer wall of the suction pipe and the packaging bag.

[0018] As a further supplement to the present application, the guide structure includes a guide sleeve fixed on the outer wall of the fixed tube, and a guide slide bar fixed on the suction hood, and the guide slide bar slides through the guide sleeve.

[0019] As a further supplement to the present application, the lifting mechanism includes a driving motor, a threaded rod and a lifting seat;

[0020] The threaded rod is vertically rotatably installed on the inner side of the mounting frame, the driving motor is fixed on the upper end of the mounting frame, and the output end of the driving motor is coaxially fixed with one end of the threaded rod, the thread of the threaded rod passes through the lifting seat, and the suction pipe is installed on the lower end of the lifting seat.

[0021] As a further supplement to the present application, a two-position three-way solenoid valve is installed at the output end of the air pump, the self-retractable air guide assembly is fixedly connected to the two-position three-way solenoid valve, and the air intake pipe is fixedly connected to the two-position three-way solenoid valve through an air guide hose; while the air intake hood is used to maintain the sealing effect between the outer wall of the air intake pipe and the packaging bag, the two-position three-way solenoid valve is switched to the air guide hose, the air pump inhales air, and the air in the packaging bag is removed through the air guide hose and the air intake pipe.

[0022] As a further supplement to the present application, the heat sealing mechanism includes heat sealing units arranged on both sides of the upper end of the storage frame, and the heat sealing units include a mounting block, an electric push rod and a heat sealing block;

[0023] The mounting block is mounted on the upper end of the mounting seat, the electric push rod is horizontally mounted on the mounting block, and the output end of the electric push rod is fixed to the heat sealing block.

[0024] As a further supplement to the present application, a storage groove for accommodating the heat sealing block is provided at the side end of the mounting block close to the heat sealing block, and the mounting block is made of heat-insulating material; after each heat sealing operation is completed, the electric push rod pulls the heat sealing block back into the storage groove, which can, on the one hand, avoid accidental burns, and on the other hand, effectively reduce the heat consumption of the heat sealing block before the next heat sealing operation.

[0025] As a further supplement to the present application, the surface of the heat sealing block is coated with a high temperature resistant non-stick coating.

[0026] In summary, the air pump, the air suction hood and the self-retractable air guide assembly are arranged in coordination. When the air suction hood does not contact the packaging bag, when the air pump inhales air, the gas is sucked in from the air holes on the air suction hood. The inhaled gas drives the wind wheel to rotate, and the wind wheel rotates with the movable tube. Since the fixed tube remains stationary, the rotating movable tube moves horizontally with the air suction hood under the action of the two-way thread. When the air suction hood moves close to the packaging bag, the packaging bag is sucked onto the air hole side of the air suction hood by utilizing the negative pressure. Since the air hole is blocked at this time, under the action of the increased negative pressure, the sealing cover opens inward, and external air is sucked in through the air supplement hole. The passing airflow causes the wind wheel to continue to rotate, thereby driving the movable tube to rotate and shrink at the same time, and utilizing the air suction hood to close the air holes on both sides of the bag opening of the packaging bag. The bag body is partially opened outward, and the circuit board can be placed in it at this time. The lifting mechanism is used to lower the suction pipe to the inner side of the bag opening of the packaging bag. The air pump continues to suck air, so that the movable pipe is extended again to the suction hood to clamp the suction pipe. At this time, the air pump stops sucking air to maintain the sealing effect between the outer wall of the suction pipe and the packaging bag. Thereafter, the two-position three-way solenoid valve is switched to the air guide hose to be turned on, and the air pump sucks air to remove the air in the packaging bag through the air guide hose and the suction pipe; then the electric push rod is used to move the heat sealing block close to the packaging bag to heat-seal the packaging bag. After each heat sealing operation is completed, the electric push rod pulls the heat sealing block back to the storage slot. On the one hand, it can avoid accidental burns, and on the other hand, it can effectively reduce the heat consumption of the heat sealing block before the next heat sealing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the first embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the overall planar structure of the first embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of a partially cutaway structure of a storage frame according to the first embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the self-retractable air guide assembly and the air suction hood according to the first embodiment of the present application;

[0031] Figure 5 This is a schematic cross-sectional three-dimensional structure diagram of a self-retractable air guide assembly according to the first embodiment of the present application;

[0032] Figure 6 for Figure 5 A is an enlarged structural diagram;

[0033] Figure 7 This is a structural schematic diagram of the packaging bag in the first embodiment of the present application when the bag mouth is opened;

[0034] Figure 8 This is a schematic diagram of the structure of the heat-sealed packaging bag in the first embodiment of the present application at the bag opening state.

[0035] Description of the numbers in the figure:

[0036] 1. Storage frame; 2. Mounting seat; 3. Air pump; 4. Air suction hood; 401. Half-pipe groove; 5. Heat sealing mechanism; 51. Mounting block; 52. Electric push rod; 53. Heat sealing block; 54. Storage groove; 6. Mounting frame; 7. Lifting mechanism; 71. Driving motor; 72. Threaded rod; 73. Lifting seat; 8. Air suction pipe; 9. Air guide hose; 10. Self-retractable air guide assembly; 101. Fixed pipe; 102. Movable pipe; 103. Wind wheel; 104. Air supply hole; 105. Sealing cover; 106. Sealing bearing; 107. Guide sleeve; 108. Guide slide rod; 11. Two-position three-way solenoid valve. DETAILED DESCRIPTION

[0037] An implementation method of the present application is described in detail below with reference to the accompanying drawings.

[0038] The first implementation method:

[0039] The present invention provides a packaging device for a new energy vehicle battery control circuit board, please refer to Figure 1-8 , including a storage frame 1, an opening and closing mechanism, a lifting mechanism 7 and a heat sealing mechanism 5.

[0040] The upper end of the storage frame 1 is provided with a mounting seat 2 and a mounting frame 6 .

[0041] Regarding the opening and closing mechanism, the opening and closing mechanism is installed on the mounting seat 2, specifically, as Figure 2 As shown, the opening and closing mechanism includes an air pump 3, an air suction hood 4 and a self-telescopic air guide component 10. The air pump 3 is installed on the mounting seat 2. Two air suction hoods 4 and two self-telescopic air guide components 10 are provided, and the two air suction hoods 4 are respectively located on the top opposite sides of the storage frame 1, and the two air suction hoods 4 are respectively connected to the air pump 3 through two self-telescopic air guide components 10. The end surfaces of the two air suction hoods 4 close to each other are densely covered with air holes to achieve:

[0042] The self-retractable air guide component 10 performs a telescopic movement under the suction action of the air pump 3. When the self-retractable air guide component 10 is extended, the air suction hood 4 approaches the packaging bag and sucks the packaging bag. When the self-retractable air guide component 10 is contracted, the air suction hood 4 opens the bag opening of the packaging bag.

[0043] Regarding the lifting mechanism 7, the lifting mechanism 7 is installed on the mounting frame 6, and an air intake pipe 8 is installed on the lifting mechanism 7 to drive the lifting and lowering movement of the air intake pipe 8. The end surfaces of the two air intake hoods 4 that are close to each other are provided with half-pipe grooves 401 that are compatible with the air intake pipe 8. When the air intake hood 4 opens the bag opening of the packaging bag, the self-retractable air guide component 10 is extended again to fix the air intake pipe 8 at the bag opening of the packaging bag and keep the outer wall of the air intake pipe 8 sealed with the packaging bag.

[0044] Among them, the lifting mechanism 7 includes a driving motor 71, a threaded rod 72 and a lifting seat 73. The threaded rod 72 is vertically rotatably installed on the inner side of the mounting frame 6. The driving motor 71 is fixed to the upper end of the mounting frame 6, and the output end of the driving motor 71 is coaxially fixed with one end of the threaded rod 72. The threaded rod 72 threads through the lifting seat 73, and the suction pipe 8 is installed at the lower end of the lifting seat 73.

[0045] The heat sealing mechanism 5 is installed on the mounting seat 2 and is located at the lower side of the opening and closing mechanism. Specifically, the heat sealing mechanism 5 includes heat sealing units arranged on both sides of the upper end of the storage frame 1, and the heat sealing units include a mounting block 51, an electric push rod 52 and a heat sealing block 53. The surface of the heat sealing block 53 is coated with a high-temperature resistant non-stick coating. The mounting block 51 is installed on the upper end of the mounting seat 2, and the electric push rod 52 is horizontally installed on the mounting block 51, and the output end of the electric push rod 52 is fixed to the heat sealing block 53.

[0046] Among them, a storage groove 54 for accommodating the heat sealing block 53 is set at the side end of the mounting block 51 close to the heat sealing block 53, and the mounting block 51 is made of heat-insulating material; after each heat sealing operation is completed, the electric push rod 52 pulls the heat sealing block 53 back into the storage groove 54. On the one hand, it can avoid accidental burns, and on the other hand, it can effectively reduce the heat consumption of the heat sealing block 53 before the next heat sealing operation.

[0047] The length of the air hood 4 is consistent with the horizontal length of the storage frame 1, which can ensure that the bag opening of the packaging bag is fully opened, so that the circuit board can be placed smoothly.

[0048] Specifically, the self-retractable air guide assembly 10 includes a fixed tube 101, a movable tube 102 and a wind wheel 103. One end of the fixed tube 101 is connected to the output end of the air pump 3, and the other end of the fixed tube 101 is threadedly sleeved on the outer side of the movable tube 102. The fixed tube 101 and the movable tube 102 are provided with matching bidirectional threads. The wind wheel 103 is installed on the inner wall of the movable tube 102. The air suction hood 4 is sealed and rotatably installed on the end of the movable tube 102 away from the fixed tube 101 through a sealing bearing 106, and a guide structure is installed between the air suction hood 4 and the fixed tube 101. An air supply hole 104 is provided at the side end of the movable tube 102 away from the fixed tube 101, and a sealing cover 105 is rotatably installed at the air supply hole 104, and a torsion spring is installed between the sealing cover 105 and the movable tube 102.

[0049] Based on the coordinated arrangement of the above structure, when the air hood 4 does not contact the packaging bag, when the air pump 3 inhales air, the gas is inhaled from the air holes on the air hood 4, and the inhaled gas drives the wind wheel 103 to rotate, and the wind wheel 103 rotates with the movable tube 102. Since the fixed tube 101 remains stationary, the rotating movable tube 102 moves horizontally with the air hood 4 under the action of the bidirectional thread. When the air hood 4 moves close to the packaging bag, the packaging bag is sucked onto the air hole side of the air hood 4 by the negative pressure. Since the air hole is blocked at this time, under the action of the increased negative pressure, the sealing cover 105 opens inward, and the external air is inhaled through the air replenishing hole 104. The passing airflow causes the wind wheel 103 to continue to rotate, thereby driving the movable tube 102 to rotate and shrink while rotating, and using the air hood 4 to open the bag body parts on both sides of the bag opening of the packaging bag outward. Figure 7 As shown, the circuit board can be placed in and the suction pipe 8 can be lowered. The air pump 3 continues to suck air, so that the movable tube 102 is extended again to the suction hood 4 to clamp the suction pipe 8. At this time, the air pump 3 stops sucking air to maintain the sealing effect between the outer wall of the suction pipe 8 and the packaging bag.

[0050] The guide structure includes a guide sleeve 107 fixed on the outer wall of the fixed tube 101 and a guide slide bar 108 fixed on the air suction hood 4 . The guide slide bar 108 slides through the guide sleeve 107 .

[0051] Among them, a two-position three-way solenoid valve 11 is installed at the output end of the air pump 3, the self-retractable air guide component 10 is fixedly connected to the two-position three-way solenoid valve 11, and the air intake pipe 8 is fixedly connected to the two-position three-way solenoid valve 11 through the air guide hose 9.

[0052] Based on the coordinated arrangement of the above structure, the suction hood 4 is used to maintain the sealing effect between the outer wall of the suction pipe 8 and the packaging bag, and the two-position three-way solenoid valve 11 is used to switch the air guide hose 9 to conduct, and the air pump 3 inhales air, and the air in the packaging bag is sucked out through the air guide hose 9 and the suction pipe 8. It can be seen that this solution greatly reduces the number of electrical equipment required for circuit board packaging and reduces packaging energy consumption.

[0053] Working principle: put the packaging bag into the storage frame 1, start the air pump 3 to inhale, and the gas is inhaled from the air holes on the suction hood 4. The inhaled gas drives the wind wheel 103 to rotate, and the wind wheel 103 rotates with the movable tube 102. Since the fixed tube 101 remains stationary, the rotating movable tube 102 moves horizontally with the suction hood 4 under the action of the two-way thread. When the suction hood 4 moves close to the packaging bag, the packaging bag is sucked to the air hole side of the suction hood 4 by the negative pressure. Since the air hole is blocked at this time, under the action of the increased negative pressure, the sealing cover 105 opens inward, and the external air is inhaled through the air supplement hole 104. The airflow makes the wind wheel 103 continue to rotate, thereby driving the movable tube 102 to rotate and shrink while rotating, and the bag body parts on both sides of the bag opening of the packaging bag are opened outward by the suction hood 4, as shown in FIG. Figure 7 As shown, the circuit board can be put in at this time, and the lifting mechanism 7 is used to lower the suction pipe 8 to the inner side of the bag opening of the packaging bag, and the air pump 3 continues to suck air, so that the movable pipe 102 is extended again to the suction hood 4 to clamp the suction pipe 8. At this time, the air pump 3 stops sucking air to maintain the sealing effect between the outer wall of the suction pipe 8 and the packaging bag. Thereafter, the two-position three-way solenoid valve 11 is switched to the air guide hose 9 to be turned on, and the air pump 3 sucks air to remove the air in the packaging bag through the air guide hose 9 and the suction pipe 8. Then, the electric push rod 52 is used to move the heat sealing block 53 close to the packaging bag to heat-seal the packaging bag, as shown in FIG. Figure 8 As shown, after each heat sealing operation is completed, the electric push rod 52 pulls the heat sealing block 53 back into the receiving groove 54.

[0054] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A packaging device for a new energy vehicle battery control circuit board, characterized in that: include: A storage frame (1), wherein a mounting seat (2) and a mounting frame (6) are mounted on the upper end of the storage frame (1); An opening and closing mechanism, the opening and closing mechanism is mounted on the mounting seat (2), the opening and closing mechanism comprises an air pump (3), an air suction hood (4) and a self-retractable air guide assembly (10), the air pump (3) is mounted on the mounting seat (2), two of the air suction hoods (4) and two of the self-retractable air guide assemblies (10) are provided, and the two air suction hoods (4) are respectively located on opposite sides of the top of the storage frame (1), and the two air suction hoods (4) are respectively connected to the air pump (3) through the two self-retractable air guide assemblies (10), and the end surfaces of the two air suction hoods (4) close to each other are densely covered with air holes, so as to achieve: The self-retractable air guide component (10) performs a retractable movement under the suction action of the air pump (3); when the self-retractable air guide component (10) is extended, the air suction hood (4) is brought close to the packaging bag and sucks the packaging bag; when the self-retractable air guide component (10) is contracted, the air suction hood (4) opens the bag opening of the packaging bag; A lifting mechanism (7), the lifting mechanism (7) being mounted on the mounting frame (6), and an air suction pipe (8) being mounted on the lifting mechanism (7) to drive the air suction pipe (8) to move up and down, and the end surfaces of the two air suction hoods (4) close to each other are both provided with a half-pipe groove (401) adapted to the air suction pipe (8), and when the air suction hood (4) opens the bag opening of the packaging bag, the self-retractable air guide component (10) is extended again to fix the air suction pipe (8) at the bag opening of the packaging bag, and to maintain the seal between the outer wall of the air suction pipe (8) and the packaging bag; A heat sealing mechanism (5), the heat sealing mechanism (5) being mounted on the mounting seat (2) and located at the lower side of the opening and closing mechanism; The self-retractable air guide assembly (10) comprises a fixed tube (101), a movable tube (102) and a wind wheel (103); One end of the fixed tube (101) is connected to the output end of the air pump (3), and the other end of the fixed tube (101) is threadedly sleeved on the outside of the movable tube (102), and the fixed tube (101) and the movable tube (102) are provided with matching bidirectional threads; The wind wheel (103) is mounted on the inner wall of the movable tube (102); the air suction hood (4) is mounted on the end of the movable tube (102) away from the fixed tube (101) in a sealed and rotatable manner via a sealing bearing (106); and a guide structure is installed between the air suction hood (4) and the fixed tube (101); An air supply hole (104) is provided at the side end of the movable tube (102) away from the fixed tube (101), a sealing cover (105) is rotatably mounted at the air supply hole (104), and a torsion spring is installed between the sealing cover (105) and the movable tube (102); The heat sealing mechanism (5) comprises heat sealing units arranged on both sides of the upper end of the storage frame (1), and the heat sealing units comprise a mounting block (51), an electric push rod (52) and a heat sealing block (53); The mounting block (51) is mounted on the upper end of the mounting seat (2), the electric push rod (52) is horizontally mounted on the mounting block (51), and the output end of the electric push rod (52) is fixed to the heat sealing block (53); A receiving groove (54) for receiving the heat sealing block (53) is provided at a side end of the installation block (51) close to the heat sealing block (53), and the installation block (51) is made of a heat-insulating material; The surface of the heat sealing block (53) is coated with a high temperature resistant non-stick coating; The length of the air suction hood (4) is consistent with the horizontal length of the storage frame (1); The guide structure comprises a guide sleeve (107) fixed on the outer wall of the fixed tube (101), and a guide slide bar (108) fixed on the air suction hood (4), wherein the guide slide bar (108) slides through the guide sleeve (107); The lifting mechanism (7) comprises a driving motor (71), a threaded rod (72) and a lifting seat (73); The threaded rod (72) is mounted on the inner side of the mounting frame (6) for vertical rotation, the drive motor (71) is fixed to the upper end of the mounting frame (6), and the output end of the drive motor (71) is coaxially fixed to one end of the threaded rod (72), the threaded rod (72) is threadedly passed through the lifting seat (73), and the suction pipe (8) is mounted on the lower end of the lifting seat (73); A two-position three-way solenoid valve (11) is installed at the output end of the air pump (3); the self-retractable air guide component (10) is fixedly connected to the two-position three-way solenoid valve (11); and the air intake pipe (8) is fixedly connected to the two-position three-way solenoid valve (11) via an air guide hose (9); The invention is further characterized in that, when the air suction hood (4) is not in contact with the packaging bag, when the air pump (3) sucks air, gas is sucked in from the air holes on the air suction hood (4), the sucked gas drives the wind wheel (103) to rotate, and the wind wheel (103) drives the movable tube (102) to rotate, the fixed tube (101) remains stationary, and the rotating movable tube (102) drives the air suction hood (4) to move horizontally under the action of the bidirectional thread. When the air suction hood (4) moves close to the packaging bag, the packaging bag is sucked onto the air hole side of the air suction hood (4) by the action of negative pressure. Since the air hole is blocked at this time, under the action of the increased negative pressure, the sealing cover (105) opens inward, and the external air is sucked in through the air supply hole (104). The passing airflow causes the wind wheel (103) to continue to rotate, thereby driving the movable tube (102) to shrink while rotating.

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