Environment-friendly PE packaging bag plastic packaging device

Abstract

The invention relates to the technical field of packaging, in particular to an environment-friendly PE packaging bag plastic packaging device which comprises a conveying main body part, a sealing assembly is arranged on the upper side of the conveying main body part and used for sealing packaging bags, a dual-purpose assembly is arranged on the upper side of the sealing assembly, and a bag opening assembly is arranged on one side of the dual-purpose assembly; the dual-purpose assembly comprises a pressure generating assembly and a suction and blowing assembly, the pressure generating assembly is connected with the suction and blowing assembly, the suction and blowing assembly is driven by the sealing assembly to rotate to follow the packaging bag, and the pressure generating assembly is driven by the sealing assembly to generate negative pressure and positive pressure, so that the suction and blowing assembly sucks or blows air into the packaging bag; the bag opening assembly is connected with the pressure generating assembly, the bag opening assembly adsorbs the packaging bag through negative pressure generated by the pressure generating assembly, and the sealing assembly drives the bag opening assembly to rotate to open the packaging bag. Therefore, the packaging bag can be automatically sealed in the conveying process, the sealing efficiency is high, and the automatic sealing device can be suitable for assembly line type plastic package machining and does not need manual operation.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, and particularly relates to an environmentally friendly PE packaging bag sealing device. Background Art

[0002] Packaging refers to the general name of containers, materials, auxiliaries, etc. used in accordance with certain technical methods in order to protect products during the circulation process, facilitate storage and transportation, and promote sales.

[0003] An environmentally friendly PE packaging bag refers to a packaging bag made of polyethylene (PE) material, which has environmental protection characteristics. PE is the abbreviation of polyethylene, which is a thermoplastic resin with good plasticity and toughness, and is widely used in various packaging fields. When it is necessary to seal a product, the product is first placed in a PE packaging bag, and then a vacuum sealing machine is used to evacuate air and seal the bag, thereby achieving sealing.

[0004] When the existing vacuum sealing machine is in use, it is necessary to first place the packaging bag on the table, then press the machine cover at the bag mouth of the packaging bag, and then evacuate air and seal the bag. This sealing method has a low sealing efficiency and requires a lot of manpower, and it is not suitable for assembly line sealing. For this reason, we propose an environmentally friendly PE packaging bag sealing device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages of the existing vacuum sealing machine, such as low sealing efficiency, requiring a lot of manpower, and not being suitable for assembly line sealing, and to propose an environmentally friendly PE packaging bag sealing device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions: An environmentally friendly PE packaging bag sealing device includes a conveying main body part. A sealing component is arranged on the upper side of the conveying main body part, and the sealing component is used for sealing the packaging bag. A dual-purpose component is arranged on the upper side of the sealing component, and an opening component is arranged on one side of the dual-purpose component; The dual-purpose component includes a pressure generating component and a suction / blowing component. The pressure generating component is connected to the suction / blowing component. The suction / blowing component is driven to rotate by the sealing component to follow the packaging bag, and the pressure generating component is driven by the sealing component to generate negative pressure and positive pressure, so that the suction / blowing component sucks air or blows air into the packaging bag; The opening component is connected to the pressure generating component. The opening component uses the negative pressure generated by the pressure generating component to adsorb the packaging bag, and the opening component is driven to rotate by the sealing component to open the packaging bag.

[0007] Preferably, the conveying main body part includes a table frame. A conveyor is fixedly arranged on the upper side of the table frame. Two baffle edges are fixedly arranged on the upper side of the conveyor. A vertical frame is fixedly arranged on the upper side of the table frame.

[0008] Preferably, the sealing assembly includes a cross frame, which is fixed on one side of the vertical frame, and a plurality of through holes are provided on the upper side of the cross frame, the number of the through holes is six, and a rotating shaft is rotatably provided on the inner side of the through hole, and two clamping synchronous belts and two pressing synchronous belts are sequentially provided below the cross frame, and upper synchronous wheels are fixed on the outer peripheries of the four rotating shafts, and lower synchronous wheels are fixed on the outer peripheries of the four rotating shafts, the two upper synchronous wheels are connected to the inner side of a single clamping synchronous belt through meshing transmission, and the two lower synchronous wheels are connected to the inner side of a single pressing synchronous belt through meshing transmission, a flexible ring is fixed on the outer periphery of the clamping synchronous belt, a heating assembly is provided on the lower side of the cross frame, and a base frame and a dual-axis motor are sequentially fixed on one side of the vertical frame, one shaft end of the dual-axis motor is fixed to the upper end of a rotating shaft, and the two rotating shafts are connected through gear transmission.

[0009] Preferably, the heating assembly comprises two electric heating blocks, the electric heating blocks are fixed to the lower side of the cross frame through a bracket, and an introduction frame is fixedly provided on one side of the electric heating block.

[0010] Preferably, the pressure generating component includes a reducer, which is fixedly connected to the vertical frame, a fan wheel is provided inside the reducer, a fan shaft is fixedly provided on the inner side of the fan wheel, the fan shaft is rotatably connected to the base frame, the fan shaft is connected to the other shaft end of the dual-axis motor through a bevel gear transmission, a negative pressure pipe is fixedly provided on one side of the reducer, three joints are fixedly provided on the negative pressure pipe, a Y-type tee is fixedly provided on the outer wall of one end of the reducer, and an air blowing pipe is fixedly provided on one end of the Y-type tee.

[0011] Preferably, the suction and blowing assembly includes a ventilation pipe and a plurality of suction and blowing flat tubes, the ventilation pipe is fixedly connected to the horizontal frame, a hose is fixedly provided on the outer wall of one end of the ventilation pipe, the hose is removably plugged into a joint, the hose matches the blowing pipe, a hollow box is fixedly provided on the outer wall of the other end of the ventilation pipe, a first step ring is rotatably provided on the outer periphery of the ventilation pipe, a belt rotation assembly is provided between the first step ring and a rotating shaft, a first annular groove is provided on the inner wall of the first step ring, a first sealing ring is fixedly provided on the inner side of the first annular groove, a ventilation hole is provided at the bottom of the hollow box, the first sealing ring rotates on the outer periphery of the hollow box, a plurality of connecting holes are provided on the outer peripheries of the first step ring and the first sealing ring, and the suction and blowing flat tube is fixed on the inner side of the connecting hole.

[0012] Preferably, the belt rotation assembly includes an intermediate shaft, the intermediate shaft is rotatably connected to the cross frame, the intermediate shaft is connected to a rotating shaft via a bevel gear transmission, and the intermediate shaft is connected to the first step ring via a gear transmission.

[0013] Preferably, the bag opening assembly includes two vertical tubes. There are two through holes provided on the upper side of the vertical frame. The vertical tubes are respectively fixed inside the through holes. The vertical tubes are fixed inside the connectors. The lower ends of the vertical tubes are of a closed structure. A second stepped ring is rotatably arranged on the outer periphery of the vertical tube. The two second stepped rings are connected by gear transmission. The inner wall of the second stepped ring is provided with a second annular groove. A second sealing ring is fixedly arranged inside the second annular groove. The second sealing ring rotates on the outer periphery of the vertical tube. The outer wall of the vertical tube is provided with air suction holes. There are two mounting holes on the outer periphery of the second sealing ring. An air suction pipe is fixedly arranged inside the mounting hole. There are two round holes on the outer periphery of the second stepped ring. The air suction pipe is fixed inside the round hole. A flexible suction cup is fixedly arranged inside the air suction pipe. One of the second stepped rings is connected to another rotating shaft by a synchronous belt and a synchronous pulley for transmission.

[0014] An environmentally friendly PE packaging bag sealing device proposed by the present invention has the following beneficial effects: (1) In the present invention, by providing a conveying main body part, a sealing component, and a heating component, the present invention has an efficient sealing function. The packaging bag can be automatically sealed during the conveying process, with a high sealing efficiency, and is applicable to assembly line type sealing processing without manual operation.

[0015] (2) In the present invention, by providing a dual-purpose component, a pressure generating component, a suction and blowing component, and a bag opening component, the present invention has the functions of automatic bag opening and suction and blowing dual use. It can automatically open the packaging bag and then suck air or blow air into the packaging bag, meeting various requirements.

[0016] (3) In the present invention, by providing a sealing component, a pressure generating component, a suction and blowing component, and a bag opening component, the present invention has a synchronous driving function. The dual-axis motor can drive the mouth pressing, air suction or blowing, and bag opening to run synchronously. A single driving part can complete automatic air suction or automatic blowing, automatic mouth pressing, and automatic bag opening, which can greatly reduce the number of driving parts and electronic components. Furthermore, the present invention is easy to maintain and has a low failure rate. Description of the Drawings

[0017] Figure 1 It is a front three-dimensional structure schematic diagram of an environmentally friendly PE packaging bag sealing device proposed by the present invention; Figure 2 It is a side three-dimensional structure schematic diagram of an environmentally friendly PE packaging bag sealing device proposed by the present invention; Figure 3 In the present invention Figure 2 The partial enlarged structure schematic diagram of area A; Figure 4Front sectional perspective structural schematic diagram of an environment-friendly PE packaging bag sealing device proposed by the present invention; Figure 5 Proposed in the present invention Figure 4 Partial enlarged structural schematic diagram of area B in Figure 6 Side partial sectional perspective structural schematic diagram of an environment-friendly PE packaging bag sealing device proposed by the present invention; Figure 7 Proposed in the present invention Figure 6 Partial enlarged structural schematic diagram of area C in Figure 8 Side sectional perspective structural schematic diagram of an environment-friendly PE packaging bag sealing device proposed by the present invention; Figure 9 Proposed in the present invention Figure 8 Partial enlarged structural schematic diagram of area D in Figure 10 Side sectional axonometric structural schematic diagram of an environment-friendly PE packaging bag sealing device proposed by the present invention; Figure 11 Proposed in the present invention Figure 10 Partial enlarged structural schematic diagram of area E in Figure 12 Proposed in the present invention Figure 11 Partial enlarged structural schematic diagram of area F in Figure 13 Top partial sectional perspective structural schematic diagram of an environment-friendly PE packaging bag sealing device proposed by the present invention; Figure 14 Bottom sectional perspective structural schematic diagram of an environment-friendly PE packaging bag sealing device proposed by the present invention.

[0018] In the figure: 1, vertical frame; 2, horizontal frame; 3, rotating shaft; 4, clamping synchronous belt; 5, pressing synchronous belt; 6, upper synchronous pulley; 7, lower synchronous pulley; 8, flexible ring; 9, electric heating block; 10, double-shaft motor; 11, reducing pipe; 12, fan wheel; 13, fan shaft; 14, negative pressure pipe; 15, Y-shaped tee; 16, blowing pipe; 17, ventilation pipe; 18, hose; 19, hollow box; 20, first stepped ring; 21, first sealing ring; 22, ventilation hole; 23, suction and blowing flat pipe; 24, intermediate shaft; 25, vertical pipe; 26, second stepped ring; 27, second sealing ring; 28, suction hole; 29, suction pipe; 30, flexible suction cup. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Referring to Figures 1 to 14 , an environmentally friendly PE packaging bag plastic sealing device includes a conveying main body part. The conveying main body part includes a table frame. A conveyor is fixedly arranged on the upper side of the table frame. Two symmetrically arranged side edges are fixedly arranged on the upper side of the conveyor. A vertical frame 1 is fixedly arranged on the upper side of the table frame. Before plastic sealing, the product needs to be put into the packaging bag, and then the conveyor is used to convey the packaging bag and the product in the packaging bag. During the conveying of the packaging bag on the conveyor, the packaging bag is in an upright state with the bag opening facing upwards. At this time, the side edges can limit the packaging bag, prevent the packaging bag from tipping over, and at the same time play a role in gathering the bag opening.

[0021] In order to seal the packaging bag, as Figures 1-9 , Figure 14 shown, a sealing component is arranged on the upper side of the conveying main body part. The sealing component is used to seal the packaging bag. The sealing component includes a cross frame 2. The cross frame 2 is fixed on one side of the vertical frame 1. A plurality of through holes are arranged on the upper side of the cross frame 2. The number of through holes is six. A rotating shaft 3 is rotatably arranged inside the through holes. Two clamping synchronous belts 4 and two pressing synchronous belts 5 are sequentially arranged below the cross frame 2. Upper synchronous wheels 6 are fixed on the outer peripheries of the four rotating shafts 3. Lower synchronous wheels 7 are fixed on the outer peripheries of the four rotating shafts 3. The lower synchronous wheels 7 are located below the upper synchronous wheels 6. Two upper synchronous wheels 6 are in meshing transmission connection inside a single clamping synchronous belt 4. Two lower synchronous wheels 7 are in meshing transmission connection inside a single pressing synchronous belt 5. A plurality of pressing grooves are arranged on the outer wall of the pressing synchronous belt 5. Flexible rings 8 are fixedly arranged on the outer peripheries of the two clamping synchronous belts 4. The two flexible rings 8 are in contact. A bottom frame and a double-shaft motor 10 are sequentially fixed on one side of the vertical frame 1. The double-shaft motor 10 is externally connected to a power supply and a switch through a wire. One shaft end of the double-shaft motor 10 is fixed to the upper end of a rotating shaft 3. The two rotating shafts 3 are in gear transmission connection. When in use, the double-shaft motor 10 needs to be turned on. The double-shaft motor 10 can drive a rotating shaft 3 to rotate. The rotating shaft 3 can drive the other rotating shafts 3 to rotate through gears, clamping synchronous belts 4 and pressing synchronous belts 5. At this time, both the clamping synchronous belts 4 and the pressing synchronous belts 5 will move. The clamping synchronous belts 4 can drive the flexible rings 8 to move together. The two flexible rings 8 can clamp the bag opening of the packaging bag during movement, so that the packaging bag can pass through the flexible rings 8 and the pressing synchronous belts 5 in sequence, and the packaging bag can be sealed during the movement process, and efficient sealing can be carried out.

[0022] In order to heat the packaging bag during sealing, as Figure 4 , Figure 14As shown in the figure, a heating component is provided on the lower side of the horizontal frame 2. The heating component includes two electric heating blocks 9. The electric heating blocks 9 are externally connected to a power supply and a switch through wires. The distance between the two electric heating blocks 9 is 6-9 mm, and the two electric heating blocks 9 are symmetrically arranged. During the sealing process, the temperature of the electric heating blocks 9 is 100-150 degrees. The electric heating blocks 9 are fixed to the lower side of the horizontal frame 2 through brackets. The height of the electric heating blocks 9 matches the height of the pressure contract synchronous belt 5. An introduction frame is fixedly provided on one side of the electric heating block 9. When the packaging bag is clamped between the two flexible rings 8 and moves, the packaging bag can pass between the two electric heating blocks 9. After passing through the electric heating blocks 9, the packaging bag will be heated and softened, and then the softened part of the packaging bag can enter between the two pressure contract synchronous belts 5. The two pressure contract synchronous belts 5 can press the bag mouth of the packaging bag, thus realizing automatic sealing.

[0023] In order to inhale or blow air into the packaging bag before sealing the packaging bag, as Figures 3-7 , Figure 11 shown, a dual-purpose component is provided on the upper side of the sealing component. The dual-purpose component includes a pressure generating component and a suction / blowing component. The suction / blowing component includes an air pipe 17 and a plurality of suction / blowing flat pipes 23. The air pipe 17 is fixedly connected to the horizontal frame 2. A hollow box 19 is fixedly provided on the outer wall of the other end of the air pipe 17. The hollow box 19 is of a circular structure. A first stepped ring 20 is rotatably provided on the outer periphery of the air pipe 17. A belt transmission component is provided between the first stepped ring 20 and a rotating shaft 3. The belt transmission component includes an intermediate shaft 24. The intermediate shaft 24 is rotatably connected to the horizontal frame 2. The intermediate shaft 24 is connected to a rotating shaft 3 through bevel gear transmission. The intermediate shaft 24 is connected to the first stepped ring 20 through gear transmission. When the rotating shaft 3 rotates, it can drive the first stepped ring 20 to rotate through the intermediate shaft 24, so that the suction / blowing component can be driven to rotate by the sealing component to follow the packaging bag.

[0024] As Figures 3-7 shown, the inner wall of the first stepped ring 20 is provided with a first annular groove. A first sealing ring 21 is fixedly provided inside the first annular groove. A ventilation hole 22 is provided at the bottom of the hollow box 19. The first sealing ring 21 rotates on the outer periphery of the hollow box 19. The width of the first sealing ring 21 is greater than the width of the ventilation hole 22. The first sealing ring 21 can ensure the sealing performance. A plurality of connection holes are provided on the outer peripheries of the first stepped ring 20 and the first sealing ring 21. The suction / blowing flat pipes 23 are fixed inside the connection holes. When the first stepped ring 20 and the suction / blowing flat pipes 23 rotate, the suction / blowing flat pipes 23 can be automatically inserted into the packaging bag. Moreover, when the first stepped ring 20 rotates, the suction / blowing flat pipes 23 can also automatically follow the moving packaging bag, so that the suction / blowing flat pipes 23 can stay in the packaging bag for a certain period of time, ensuring the time required for inhalation or blowing, and thus realizing automatic following. When the suction / blowing flat pipes 23 rotate to be connected to the ventilation hole 22, the suction / blowing flat pipes 23 can be connected to the air pipe 17 through the ventilation hole 22 and the hollow box 19.

[0025] In order to enable the suction and blowing flat tube 23 to suck or blow air, as Figures 1-2 , Figure 4 , Figure 8 , Figure 10 shown, the pressure generating assembly includes a reducing pipe 11, the reducing pipe 11 is fixedly connected to the vertical frame 1, a fan wheel 12 is arranged inside the reducing pipe 11, a fan shaft 13 is fixedly arranged inside the fan wheel 12, the fan shaft 13 is rotatably connected to the bottom frame, and the fan shaft 13 is connected to the other shaft end of the double-shaft motor 10 through bevel gear transmission. A negative pressure pipe 14 is fixedly communicated with one side of the reducing pipe 11, and three connectors are fixedly communicated with the negative pressure pipe 14. A Y-shaped tee 15 is fixedly arranged on the outer wall of one end of the reducing pipe 11, and a blowing pipe 16 is fixedly communicated with one end of the Y-shaped tee 15. A stabilizing frame is fixed between the blowing pipe 16 and the table frame. During plastic sealing, the double-shaft motor 10 can also drive the fan wheel 12 to rotate through the fan shaft 13. When the fan wheel 12 rotates, an air flow will be generated inside the reducing pipe 11. The air flow will enter through the thicker end of the reducing pipe 11 and then be discharged through the thinner end of the reducing pipe 11. Then the air flow will enter the Y-shaped tee 15. A part of the air flow inside the Y-shaped tee 15 will be directly discharged, and a part of the air flow inside the Y-shaped tee 15 will enter the blowing pipe 16. When the air flow passes through the reducing pipe 11, a negative pressure can be generated inside the negative pressure pipe 14. The pressure generating assembly is connected to the suction and blowing assembly. Specifically: a hose 18 is fixedly arranged on the outer wall of one end of the ventilation pipe 17. The hose 18 is a metal hose, so it will not collapse. The hose 18 is detachably inserted into a connector, and the hose 18 is matched with the blowing pipe 16. Before use, when it is necessary to suck air into the packaging bag, the hose 18 needs to be inserted and installed on a connector. At this time, the hose 18 is communicated with the negative pressure pipe 14, and a negative pressure will be generated inside the hose 18, so that the suction and blowing flat tube 23 can automatically suck air. When it is necessary to blow air into the packaging bag, the hose 18 needs to be inserted and installed on the blowing pipe 16. At this time, the hose 18 is communicated with the blowing pipe 16, and a positive pressure will be generated inside the hose 18, so that the suction and blowing flat tube 23 can automatically blow air. Thus, the pressure generating assembly can be driven by the sealing assembly to generate negative pressure and positive pressure, so that the suction and blowing assembly can suck or blow air into the packaging bag.

[0026] In order to ensure that the suction and blowing flat tube 23 can be inserted into the packaging bag, as Figure 3 , Figure 6 , Figures 11-13As shown in the figure, one side of the dual-purpose component is provided with a bag-opening component. The bag-opening component includes two vertical tubes 25. There are two through holes on the upper side of the vertical frame 1, and the vertical tubes 25 are respectively fixed inside the through holes. The bag-opening component is connected to the pressure-generating component. Specifically: The vertical tube 25 is fixed inside the joint. At this time, the vertical tube 25 is communicated with the negative-pressure tube 14, and negative pressure will be generated inside the vertical tube 25. The lower end of the vertical tube 25 is a closed structure. A second stepped ring 26 rotates on the outer periphery of the vertical tube 25. There are air suction holes 28 on the outer wall of the vertical tube 25. There are two mounting holes on the outer periphery of the second sealing ring 27, and an air suction pipe 29 is fixedly arranged inside the mounting holes. There are two circular holes on the outer periphery of the second stepped ring 26, and the air suction pipe 29 is fixed inside the circular holes. A flexible suction cup 30 is fixedly arranged inside the air suction pipe 29. When the air suction pipe 29 is communicated with the air suction hole 28, the air suction pipe 29 can be communicated with the vertical tube 25 through the air suction hole 28, and negative pressure will also be generated inside the air suction pipe 29 and the flexible suction cup 30. Therefore, when the flexible suction cup 30 is attached to the packaging bag, the flexible suction cup 30 can adsorb the packaging bag due to negative pressure, and the bag-opening component can use the negative pressure generated by the pressure-generating component to adsorb the packaging bag.

[0027] As Figures 11-13 As shown in the figure, the inner wall of the second stepped ring 26 is provided with a second annular groove, and a second sealing ring 27 is fixedly arranged inside the second annular groove. The second sealing ring 27 rotates on the outer periphery of the vertical tube 25. The width of the second sealing ring 27 is greater than the width of the air suction hole 28. The two second stepped rings 26 are connected by gear transmission. One second stepped ring 26 is connected to another rotating shaft 3 through a synchronous belt and a synchronous pulley for transmission. When the rotating shaft 3 rotates, it will drive one second stepped ring 26 to rotate. The second stepped ring 26 will drive the other second stepped ring 26 to rotate, so as to drive the two second stepped rings 26 to rotate in opposite directions. The second stepped ring 26 can drive the air suction pipe 29 and the flexible suction cup 30 to rotate together. After the flexible suction cup 30 adsorbs the packaging bag, at the same time, the air suction pipe 29 and the flexible suction cup 30 rotate, and the bag opening of the packaging bag can be opened. Therefore, the bag-opening component can be driven by the sealing component to rotate to open the packaging bag, and then it can be ensured that the air suction and blowing flat tube 23 can be inserted into the packaging bag. Then, the air suction pipe 29 and the flexible suction cup 30 continue to rotate, and the air suction pipe 29 will be disconnected from the air suction hole 28, and negative pressure will not continue to be generated inside the air suction pipe 29. Therefore, during the continuous rotation of the air suction pipe 29, the flexible suction cup 30 will first open the packaging bag, and then the flexible suction cup 30 will be separated from the packaging bag.

[0028] In summary, the working process of this embodiment is as follows: The packaging bag is conveyed through the conveying main body, and then the pressure generating assembly is driven by the sealing assembly to generate negative pressure and positive pressure, so that the flexible suction cup 30 adsorbs the packaging bag. Then, the flexible suction cup 30 is driven by the sealing assembly to rotate and open the packaging bag. The suction and blowing flat tube 23 is driven by the sealing assembly to rotate, so that the suction and blowing flat tube 23 is inserted into the packaging bag. Due to the negative pressure or positive pressure generated by the pressure generating assembly, the suction and blowing flat tube 23 inhales or exhales air. When the suction and blowing flat tube 23 inhales or exhales air, the two flexible rings 8 clamp the bag mouth of the packaging bag, so that the bag mouth is in a closed state. Then, the packaging bag is clamped and conveyed by the sealing assembly. During the process of the sealing assembly conveying the packaging bag and the suction and blowing flat tube 23 rotating, the suction and blowing flat tube 23 is withdrawn from the packaging bag, and then the packaging bag is heat-sealed by the sealing assembly.

Claims

1. An environmentally friendly plastic sealing device for PE packaging bags, including a conveying main body, characterized in that, A sealing assembly is provided on the upper side of the conveying main body, and the sealing assembly is used to seal the packaging bag. A dual-purpose assembly is provided on the upper side of the sealing assembly, and a bag opening assembly is provided on one side of the dual-purpose assembly. The dual-purpose component includes a pressure-generating component and a suction-blowing component. The pressure-generating component is connected to the suction-blowing component. The sealing component drives the suction-blowing component to rotate to follow the packaging bag. The sealing component drives the pressure-generating component to generate negative pressure and positive pressure, so that the suction-blowing component sucks or blows air into the packaging bag. The bag opening component is connected to the pressure generating component. The bag opening component uses the negative pressure generated by the pressure generating component to absorb the packaging bag, and the sealing component drives the bag opening component to rotate to open the packaging bag.

2. The environmentally friendly PE packaging bag plastic sealing device according to claim 1, characterized in that, The conveying main body comprises a table frame, a conveyor is fixedly provided on the upper side of the table frame, two retaining edges are fixedly provided on the upper side of the conveyor, and a stand (1) is fixedly provided on the upper side of the table frame.

3. An environmentally friendly PE packaging bag plastic sealing device according to claim 2, characterized in that, The sealing assembly comprises a horizontal frame (2), the horizontal frame (2) being fixed on one side of the vertical frame (1), a plurality of through holes being provided on the upper side of the horizontal frame (2), the number of the through holes being six, a rotating shaft (3) being rotatably provided inside the through hole, two clamping synchronous belts (4) and two pressing synchronous belts (5) being provided in sequence below the horizontal frame (2), upper synchronous wheels (6) being fixed on the outer peripheries of the four rotating shafts (3), lower synchronous wheels (7) being fixed on the outer peripheries of the four rotating shafts (3), and two upper synchronous wheels (6) being fixed on the outer peripheries of the four rotating shafts (3). The two lower synchronous wheels (7) are connected to the inner side of a single clamping synchronous belt (4) through meshing transmission, and the two lower synchronous wheels (7) are connected to the inner side of a single pressing synchronous belt (5) through meshing transmission. A flexible ring (8) is fixedly provided on the outer periphery of the clamping synchronous belt (4). A heating assembly is provided on the lower side of the horizontal frame (2). A base frame and a dual-axis motor (10) are fixed to one side of the vertical frame (1) in sequence. One shaft end of the dual-axis motor (10) is fixed to the upper end of a rotating shaft (3), and the two rotating shafts (3) are connected through gear transmission.

4. An environmentally friendly PE packaging bag plastic sealing device according to claim 3, characterized in that, The heating assembly comprises two electric heating blocks (9), the electric heating blocks (9) being fixed to the lower side of the cross frame (2) via brackets, and an introduction frame being fixedly provided on one side of the electric heating blocks (9).

5. An environmentally friendly PE packaging bag plastic sealing device according to claim 3, characterized in that, The pressure generating assembly comprises a reducer (11), wherein the reducer (11) is fixedly connected to the stand (1), a fan wheel (12) is provided inside the reducer (11), a fan shaft (13) is fixedly provided on the inner side of the fan wheel (12), the fan shaft (13) is rotatably connected to the base frame, the fan shaft (13) is connected to the other shaft end of the dual-axis motor (10) via a bevel gear transmission, a negative pressure pipe (14) is fixedly connected to one side of the reducer (11), three joints are fixedly connected to the negative pressure pipe (14), a Y-shaped tee (15) is fixedly provided on the outer wall of one end of the reducer (11), and an air blowing pipe (16) is fixedly provided at one end of the Y-shaped tee (15).

6. The environmentally friendly PE packaging bag sealing device according to claim 5, characterized in that, The suction and blowing assembly includes an air pipe (17) and a number of suction and blowing flat pipes (23). The air pipe (17) is fixedly connected to the cross frame (2). A flexible pipe (18) is fixedly provided on the outer wall of one end of the air pipe (17). The flexible pipe (18) is detachably inserted into a connector. The flexible pipe (18) is matched with the blowing pipe (16). A hollow box (19) is fixedly provided on the outer wall of the other end of the air pipe (17). A first stepped ring (20) is rotatably provided on the outer periphery of the air pipe (17). A belt transmission assembly is provided between the first stepped ring (20) and a rotating shaft (3). The inner wall of the first stepped ring (20) is provided with a first annular groove. A first sealing ring (21) is fixedly provided inside the first annular groove. The bottom of the hollow box (19) is provided with a vent hole (22). The first sealing ring (21) rotates on the outer periphery of the hollow box (19). A number of connection holes are provided on the outer peripheries of the first stepped ring (20) and the first sealing ring (21). The suction and blowing flat pipes (23) are fixed inside the connection holes.

7. An environmentally friendly PE packaging bag plastic sealing device according to claim 6, characterized in that, The belt transmission assembly includes an intermediate shaft (24). The intermediate shaft (24) is rotatably connected to the cross frame (2). The intermediate shaft (24) is connected to a rotating shaft (3) through bevel gear transmission. The intermediate shaft (24) is connected to the first stepped ring (20) through gear transmission.

8. An environmentally friendly PE packaging bag plastic sealing device according to claim 5, characterized in that, The bag opening assembly includes two vertical pipes (25). Two through holes are provided on the upper side of the vertical frame (1). The vertical pipes (25) are respectively fixed inside the through holes. The vertical pipes (25) are fixed inside the connector. The lower ends of the vertical pipes (25) are of a closed structure. A second stepped ring (26) rotates on the outer periphery of the vertical pipes (25). The two second stepped rings (26) are connected through gear transmission. The inner wall of the second stepped ring (26) is provided with a second annular groove. A second sealing ring (27) is fixedly provided inside the second annular groove. The second sealing ring (27) rotates on the outer periphery of the vertical pipes (25). Suction holes (28) are provided on the outer walls of the vertical pipes (25). Two mounting holes are provided on the outer periphery of the second sealing ring (27). Suction pipes (29) are fixedly provided inside the mounting holes. Two circular holes are provided on the outer periphery of the second stepped ring (26). The suction pipes (29) are fixed inside the circular holes. Flexible suction cups (30) are fixedly provided inside the suction pipes (29). One of the second stepped rings (26) is connected to another rotating shaft (3) through a synchronous belt and a synchronous pulley.

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