Packaging bag heat sealing and sealing automatic all-in-one machine

By designing an automated integrated machine for heat sealing packaging bags, the problems of high manual labor intensity and chemical corrosion in traditional packaging methods have been solved, achieving efficient automated sealing and reducing production costs and safety risks.

CN223672985UActive Publication Date: 2025-12-16TIANNENG CHEM +1
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Patent Information

Application Number
CN202520021140.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-03
Publication Date
2025-12-16
Estimated Expiration
2035-01-03

AI Technical Summary

Technical Problem

Traditional packaging methods are labor-intensive, have low production efficiency, and pose risks of mechanical injury and chemical corrosion.

Method used

Design an automated integrated machine for heat sealing packaging bags, comprising a frame assembly, a bag opening dust blowing assembly, a heat sealing assembly, an edge folding assembly, and a sewing assembly. Through an automated process, it realizes heat sealing, dust blowing, edge folding, and sewing, and can automatically adjust to different sizes of packaging bags.

Benefits of technology

It improves sealing efficiency and sealing effect, reduces labor intensity, saves labor costs, and avoids mechanical damage and chemical corrosion.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a packaging bag heat sealing and sealing automation all-in-one machine which comprises a machine frame assembly, a bag opening dust blowing assembly, a heat sealing assembly, an edge folding assembly, a sewing assembly and a conveying assembly, the machine frame assembly is at least provided with a machine frame body, and the machine frame body is provided with a main machine installation position and a height lifting mechanism. A bag opening dust blowing assembly, a heat sealing assembly, an edge folding assembly and a sewing assembly are sequentially arranged on the main machine installation position, and the height of the main machine installation position is adjusted by adjusting the height lifting mechanism. Compared with the prior art, a series of functions of automatic conveying, automatic dust blowing, automatic heat sealing, automatic edge folding and bag sewing, inverted bag conveying and the like of the heat sealing all-in-one machine are achieved, adjustment production of packaging bags with different yields of 10 kg-25 kg can be achieved through the height lifting mechanism, the sealing efficiency and the sealing effect are improved, the labor intensity of workers is reduced, and the production efficiency is improved. The labor cost is saved, and the problems of mechanical damage, chemical corrosion and the like are avoided to a great extent.
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Description

Technical Field

[0001] This utility model relates in particular to an integrated heat-sealing machine for PE bags, belonging to the field of packaging bag sealing technology. Background Technology

[0002] With the development of the global economy, the demand and requirements for packaging materials in various industries continue to rise. In the food, fertilizer, pesticide, and chemical industries, PE inner film + woven bag integrated packaging bags are commonly used for powdery or small flake materials. Especially in the packaging of highly corrosive and easily caking chemical products such as sodium hydroxide and potassium hydroxide, there are high requirements for the moisture-proof, waterproof, and tear-resistant properties of packaging materials. However, the traditional packaging method for highly corrosive products such as sodium hydroxide and potassium hydroxide involves manually heat-sealing the inner bag after filling it with the material, placing the inner bag inside the outer bag, and then manually folding and sewing the outer bag. This packaging method is not only labor-intensive and inefficient, but also poses risks of mechanical injury and chemical corrosion because operators directly contact the materials during the packaging process.

[0003] Therefore, a high-performance, automated packaging bag heat sealing machine was proposed. Summary of the Invention

[0004] The purpose of this utility model is to provide an automated integrated machine for heat sealing packaging bags, which solves the problems of high manual labor intensity, low production efficiency, mechanical injury, and chemical corrosion.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automated integrated machine for heat sealing packaging bags includes a frame assembly, a bag opening dust blowing assembly, a heat sealing assembly, a folding assembly, a sewing assembly, and a conveying assembly.

[0007] The frame assembly includes at least a frame body, on which a main unit mounting position and a height lifting mechanism are provided. The main unit mounting position is provided with a bag opening dust blowing component, a heat sealing component, a folding component, and a sewing component in sequence. The conveying component is located below the bag opening dust blowing component, heat sealing component, folding component, and sewing component. The height of the main unit mounting position can be adjusted by adjusting the height lifting mechanism, which is suitable for packaging bags of different specifications.

[0008] The bag mouth dust blowing assembly is provided with at least a negative pressure generating mechanism, a bag feeding mechanism and an air blowing mechanism. The bag feeding mechanism moves synchronously with the conveying assembly. The negative pressure generating mechanism generates negative pressure at the bag feeding mechanism to suck up the bag mouth on both sides. The air blowing mechanism extends into the open bag mouth to blow away the material adhering to the inside of the bag mouth.

[0009] The heat sealing assembly is provided with at least two strip-shaped heating blocks, the bottom of the heating block is provided with a plurality of guide rails perpendicular to the running direction of the packaging bag, a sliding block is arranged on each guide rail, and one of the heating blocks is fixed on the sliding block.

[0010] The edge folding assembly comprises at least a first edge folding mechanism and a second edge folding mechanism, the edge folding mechanism is provided with a cylinder C and an edge folding plate, the edge folding plate is an L-shaped plate body, the cylinder C drives the edge folding plate to rotate, the two edge folding mechanisms fold the bag opening by 180° in turn, and the folded packaging bag is sent to the sewing assembly.

[0011] The conveying assembly comprises at least a chain B and a chain wheel B, the chain wheel B comprises two driving chain wheels and a plurality of driven chain wheels, the driving chain wheels are installed on a gear box, the gear box drives the two driving chain wheels to rotate in opposite directions synchronously through a speed reducer, and drives the chain B to be conveyed transversely.

[0012] The whole action process is as follows: the packaging bag filled with materials is conveyed into the equipment from the position of the bag opening dust blowing assembly through an external conveyor, and is conveyed into the bag opening dust blowing assembly through the conveying assembly, the dust possibly existing in the inner wall of the bag opening is cleaned through blowing in the bag opening dust blowing assembly. Further, the pe inner film of the packaging bag is heated to melt by the heat sealing assembly, and is bonded to be integrated after being heated to melt, and the bag opening is sealed. Further, the sealed bag opening is folded by the edge folding assembly; further, the bag opening at the folded edge is sewn by the sewing assembly; further, the bag opening is sent out from the outlet of the equipment, and the whole working process is completed.

[0013] Further, the height lifting mechanism comprises a chain A, a gear shaft and a gear box A, one of the main machine mounting positions is fixed with the gear box A, the gear box A is connected with the gear shaft, and the gear shaft is connected with the main machine mounting position, the chain A is longitudinally arranged on the axial rack body of the main machine mounting position, the gear shaft is provided with a chain wheel, the chain wheel acts on the chain A, and the gear box A is provided with a handle.

[0014] Further, the bag conveying mechanism comprises two hole-shaped synchronous belts and four pulleys, the hole-shaped synchronous belt is provided with a negative pressure bag suction device, one of the pulleys is provided with a chain wheel A, the chain wheel A is connected with the chain B, when the conveying assembly moves, the chain wheel B rotates synchronously, drives the bag conveying mechanism to move, and conveys the bag opening to the negative pressure bag suction device, the negative pressure bag suction device is connected with a negative pressure generating mechanism, a negative pressure is generated in the region of the hole-shaped synchronous belt in contact with the negative pressure bag suction device, the bag opening is opened by suction of the outer wall of the bag opening through the hole of the synchronous belt.

[0015] Further, the blowing mechanism comprises a cylinder A and a blowing rod, the blowing rod is arranged below the cylinder A, the blowing rod is a hollow needle-shaped body, a blowing hole is arranged at the lower part of the blowing rod, the blowing rod is connected with a positive pressure air source, positive pressure air is sprayed from the blowing hole of the blowing rod, and the blowing hole is matched with the operation of the hole-shaped synchronous belt, so that the inner wall of the bag opening is blown dust from the head to the tail.

[0016] Further, the bag opening dust blowing assembly further comprises a negative pressure dust suction device, the negative pressure dust suction device is arranged behind the blowing mechanism, the negative pressure dust suction device is connected with a negative pressure generating mechanism, dust generated when the blowing rod blows dust on the bag opening is sucked through the negative pressure, and the dust is prevented from falling into the mechanical equipment and affecting the service life of the equipment and the accuracy of electrical elements.

[0017] Further, the edge folding assembly further comprises a rubber wheel set and a chain wheel C, the chain wheel C is connected with the chain B, the rubber wheel set comprises two rubber wheels which are arranged symmetrically left and right along the running direction of the packaging bag, the chain wheel C is connected with one of the rubber wheels through a chain, and the chain wheel C is driven to rotate when the conveying assembly moves, so that the rubber wheel set is driven.

[0018] Further, the heating block is provided with a cylinder B, the heating block provided with a sliding block at the bottom is driven to make reciprocating motion on the guide rail through the cylinder B, the opening and closing of the two heating blocks are realized, and the bag opening of the packaging bag is heat sealed and sealed.

[0019] Further, the heating block is provided with a heating wire and a temperature sensor, and constant temperature heat sealing of the bag opening can be realized by setting the temperature.

[0020] Compared with the prior art, the automatic heat sealing and sealing integrated machine realizes automatic conveying, automatic dust blowing, automatic heat sealing, automatic edge folding and bag sewing, and automatic bag conveying and a series of functions through an automatic process, the production of packaging bags with different output of 10kg to 25kg can be realized through the height lifting mechanism, the inner bag and the outer bag of the inner cover film packaging bag are simultaneously heat sealed, the inner bag is heat sealed on the outer bag, and then edge folding and sewing are simultaneously performed, this method not only improves the sealing efficiency and sealing effect, but also reduces the labor intensity and saves the labor cost, and mechanical injury, chemical corrosion and other problems are greatly avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the heat sealing and sealing automatic integrated machine of the utility model;

[0022] Figure 2 is a structural schematic view of the rack assembly in the heat sealing and sealing automatic integrated machine embodiment of the utility model;

[0023] Figure 3 is a structural schematic view of the bag opening dust blowing assembly in the heat sealing and sealing automatic integrated machine embodiment of the utility model;

[0024] Figure 4 Figure 1 is a structure schematic view of the bag opening dust blowing assembly in the embodiment of the utility model;

[0025] Figure 5 Figure 1 is a structure schematic view of the heat sealing assembly in the embodiment of the utility model heat sealing and automatic sealing integrated machine;

[0026] Figure 6 Figure 1 is a structure schematic view of the folding assembly in the embodiment of the utility model heat sealing and automatic sealing integrated machine;

[0027] Figure 7 Figure 1 is a structure schematic view of the conveying assembly in the embodiment of the utility model heat sealing and automatic sealing integrated machine.

[0028] As shown in the figure: 1 is a sewing assembly, 2 is a rack assembly, 3 is a bag opening dust blowing assembly, 4 is a heat sealing assembly, 5 is a folding assembly, 6 is a conveying assembly, 2-1 is a rack body, 2-2 is a main machine installation position, 2-3 is a chain A, 2-4 is a gear shaft, 2-5 is a gear box A, 2-6 is a handle, 2-7 is an electric control cabinet, 3-1 is a hole-shaped synchronous belt, 3-2 is a negative pressure dust collection device, 3-3 is a cylinder A, 3-4 is a negative pressure bag suction device, 3-5 is a negative pressure generating mechanism, 3-6 is a blowing rod, 3-7 is a chain wheel A, 4-1 is a heating block, 4-2 is a guide rail, 4-3 is a cylinder B, 4-4 is a sliding block, 4-5 is a control box, 5-1 is a first folding mechanism, 5-2 is a second folding mechanism, 5-3 is a cylinder C, 5-4 is a folding plate, 5-5 is a rubber wheel set, 5-6 is a chain wheel C, 6-1 is a chain B, 6-2 is a frame, 6-3 is a speed reducer, 6-4 is a gear box B, 6-5 is a chain wheel B. DETAILED DESCRIPTION

[0029] The preferred embodiments of the utility model will be described in detail below with reference to the drawings.

[0030] Referring to Figures 1-7 As shown in the figure, a packaging bag heat sealing and automatic sealing integrated machine comprises a rack assembly 2, a bag opening dust blowing assembly 3, a heat sealing assembly 4, a folding assembly 5, a sewing assembly 1 and a conveying assembly 6.

[0031] The rack assembly 2 is provided with a rack body 2-1, the rack body 2-1 is provided with a main machine installation position 2-2 and a height lifting mechanism, the main machine installation position 2-2 is sequentially provided with a bag opening dust blowing assembly 3, a heat sealing assembly 4, a edge folding assembly 5 and a sewing assembly 1, and the conveying assembly 6 is arranged below the bag opening dust blowing assembly 3, the heat sealing assembly 4, the edge folding assembly 5 and the sewing assembly 1; the height lifting mechanism comprises a chain A2-3, a gear shaft 2-4 and a gear box A2-5, one of the main machine installation positions 2-2 is fixedly provided with the gear box A2-5, the gear box A2-5 is connected with the gear shaft 2-4, and the gear shaft 2-4 is connected with the main machine installation position 2-2; the chain A2-3 is longitudinally arranged on the rack body 2-1 in the axial direction of the main machine installation position 2-2, a sprocket is arranged on the gear shaft 2-4, the sprocket acts on the chain A2-3, and a handle 2-6 is arranged on the gear box A2-5; the height of the main machine installation position 2-2 is adjusted by adjusting the height lifting mechanism, and the device is suitable for different specifications of packaging bags.

[0032] Specifically, before the device is operated, the handle 2-6 on the gear box is rotated, the gear shaft 2-4 is synchronously rotated, the sprocket arranged on the gear shaft 2-4 is rotated, the chain A2-3 is driven to move by the sprocket, and then the whole main machine installation position 2-2 starts to move up and down, so that the position of the whole bag inlet height direction is adjusted, and the bag inlet of the device can match the position of the bag entering the device. An electric control cabinet 2-7 is arranged on the rack body 2-1, and electrical elements of the whole device are arranged in the electric control cabinet 2-7. The electrical control in the utility model is a known technology in the art.

[0033] The bag opening dust blowing assembly 3 is located at the most front end of the rack assembly 2, the bag opening dust blowing assembly 3 is provided with a negative pressure generating mechanism 3-5, a bag conveying mechanism and a blowing mechanism, the bag conveying mechanism moves synchronously with the conveying assembly 6, the negative pressure generating mechanism 3-5 generates negative pressure at the bag conveying mechanism to adsorb the outside of the bag opening to both sides, and the blowing mechanism extends into the open bag opening to blow off the material adhered to the inside of the bag opening.

[0034] The bag conveying mechanism comprises two hole-shaped synchronous belts 3-1 and four pulleys, the hole-shaped synchronous belt 3-1 is provided with a negative pressure bag suction device 3-4, one of the pulleys is provided with a sprocket A3-7, the sprocket A3-7 is connected with a chain B6-1, when the conveying assembly 6 moves, the sprocket A3-7 rotates synchronously, drives the two hole-shaped synchronous belts 3-1 to move in opposite directions, and conveys the bag opening of the packaging bag to the negative pressure bag suction device 3-4, the negative pressure bag suction device 3-4 is connected with the negative pressure generating mechanism 3-5, and negative pressure is generated in the region of the hole-shaped synchronous belt 3-1 contacted by the negative pressure bag suction device 3-4. Since the hole-shaped synchronous belt 3-1 is provided with an opening, the negative pressure can directly adsorb the outer wall of the bag opening through the opening on the synchronous belt, the bag opening is opened, and the bag opening is continuously conveyed to the blowing mechanism.

[0035] The blowing mechanism comprises a cylinder A3-3 and a blowing rod 3-6 arranged below the cylinder A3-3, the blowing rod 3-6 being a hollow needle-shaped body, the lower part of the blowing rod 3-6 being provided with a plurality of blowing holes, the blowing rod 3-6 being connected to a positive pressure source, when the bag with the opened bag opening is sent to the blowing mechanism, the cylinder A3-3 is extended, the hole-equipped blowing rod 3-6 is inserted into the bag opening which is previously sucked open, the holes on the blowing rod 3-6 are located at the position of the inner wall of the bag opening, and the positive pressure gas is sprayed from the blowing holes of the blowing rod 3-6, cooperating with the operation of the hole-shaped synchronous belt 3-1 and the movement of the conveying assembly 6, to realize the dust blowing action of the inner wall of the bag opening from the beginning to the end.

[0036] The blowing mechanism further comprises a negative pressure dust collection device 3-2 arranged at the rear of the blowing mechanism, the negative pressure dust collection device 3-2 being connected to a negative pressure generating mechanism 3-5, and the dust blown out by the blowing rod 3-6 when blowing the bag opening is sucked by the negative pressure to avoid falling into the mechanical equipment to affect the service life of the equipment and the accuracy of the electrical elements.

[0037] The heat sealing assembly 4 is provided with two strip-shaped heating blocks (4-1), the heating blocks (4-1) are provided with heating wires and temperature sensors, constant temperature heat sealing of the bag opening can be realized by setting the temperature, the bottom of the heating block (4-1) is perpendicular to the running direction of the packaging bag and is provided with a plurality of guide rails 4-2, each guide rail 4-2 is provided with a sliding block 4-4, and one of the heating blocks (4-1) is fixed on the sliding block 4-4; the heating block (4-1) is provided with a cylinder B4-3, the cylinder B4-3 drives the heating block (4-1) provided with the sliding block 4-4 at the bottom to make reciprocating motion on the guide rail 4-2 to realize the opening and closing of the two heating blocks (4-1), and the bag opening of the packaging bag is heat sealed and sealed.

[0038] Specifically, the cylinder B4-3 with a guide rod is in a retracted state, when the bag opening completely enters the gap between the two heating blocks (4-1) of the heat sealing assembly 4, the cylinder B4-3 is extended, and the heating blocks (4-1) move relatively to clamp the bag opening. At the same time, the conveying assembly 6 stops moving, after the bag opening is heated to complete the sealing, the cylinder B4-3 is retracted, and the conveying assembly 6 continues to convey the packaging bag out of the entire heat sealing assembly 4.

[0039] The folding assembly 5 comprises a first folding mechanism 5-1, a second folding mechanism 5-2, a rubber wheel set 5-5 and a chain wheel C5-6 connected with a chain B6-1, the rubber wheel set 5-5 comprises two rubber wheels symmetrically arranged left and right in the running direction of the packaging bag, the chain wheel C5-6 is connected with one of the rubber wheels through the chain, and the chain wheel C5-6 is driven to rotate by the conveying assembly 6, so as to drive the rubber wheel set 5-5 to send the heat-sealed packaging bag to the folding mechanism, the folding mechanism is provided with a cylinder C5-3 and a folding plate 5-4, the folding plate 5-4 is an L-shaped plate body, the cylinder C5-3 drives the folding plate 5-4 to rotate, and the two folding mechanisms alternately fold the bag opening by 180° in turn, and the folded packaging bag is sent to the sewing assembly 1.

[0040] Specifically, after the bag opening enters the conveying position of the folding assembly 5, the bag opening is powered by the rubber wheel set 5-5, and then is conveyed to the folding mechanism, at this time, the cylinder C5-3 is in the retracted state, and the folding plate 5-4 is above the bag opening, when the bag opening enters the first folding mechanism 5-1, the cylinder C5-3 is extended, the folding plate 5-4 is obliquely downward from above the bag opening, and the bag opening is bent along the folding plate 5-4 to the direction of the cylinder C5-3, since the folding plate 5-4 is L-shaped, the bag opening is continuously bent along the inside of the L-shaped folding plate 5-4 in the action of the cylinder C5-3 extension, and finally is attached to the inside of the L-shaped folding plate 5-4, forming a 180° bending state, when the second packaging bag reaches the edge of the first folding mechanism 5-1, the first folding mechanism 5-1 ends the folding action of the previous bag, the cylinder C5-3 drives the folding plate 5-4 to open, at this time, the second packaging bag enters the first folding mechanism 5-1 to be folded, the first packaging bag enters the second folding mechanism 5-2 to be folded, the structure and working principle of the second folding mechanism 5-2 are completely consistent with those of the first folding mechanism 5-1, the spacing between the first folding mechanism 5-1 and the second folding mechanism 5-2 can be adjusted according to the feeding speed and the conveying speed, and the folding time of the two folding mechanisms can be reduced by about half compared with the case that one folding mechanism completely completes the folding of one packaging bag and then folds the next packaging bag, the time interval of the two packaging bags reaching the folding mechanism can be improved from 4S to 2S, and the packaging efficiency is significantly improved.

[0041] The conveying assembly 6 comprises a chain B6-1 and a chain wheel B6-5, the chain wheel B6-5 comprises two driving chain wheels and a plurality of driven chain wheels, the driving chain wheels are installed on a gear box B6-4, the gear box drives the two driving chain wheels to rotate in opposite directions synchronously through a speed reducer 6-3, and drives the chain B6-1 to convey the packaging bag transversely, the conveying assembly 6 is provided with a frame 6-2, and is connected with the machine frame body 2-1 through the frame 6-2.

[0042] The whole action flow is: the packaging bag filled with materials is conveyed into the equipment from the position of the bag opening dust blowing assembly 3 through an external conveying machine, and is conveyed into the bag opening dust blowing assembly 3 through the conveying assembly 6, and the dust possibly existing in the inner wall of the bag opening is cleaned through blowing in the bag opening dust blowing assembly 3. Further, the pe inner film of the packaging bag is heated to melt through the heat sealing assembly 4, and is adhered to be integrated, and the bag opening sealing is completed. Further, the sealed bag opening is folded through the edge folding assembly 5; further, the bag opening at the folded edge is sewn through the sewing assembly 1; further, the bag opening is sent out from the equipment outlet, and the whole work flow is completed.

[0043] The preferred embodiments of the present application are described above, it should be noted that, for those skilled in the art, without departing from the inventive concept of the present application, a number of changes and improvements can be made, which are all within the scope of the present application.

Claims

1. A packaging bag heat sealing automatic integrated machine, comprising a rack assembly, a bag opening dust blowing assembly, a heat sealing assembly, a folding edge assembly, a sewing assembly and a conveying assembly, characterized in that: the rack assembly is provided with at least a rack body, the rack body is provided with a main machine mounting position and a height lifting mechanism, the bag opening dust blowing assembly, the heat sealing assembly, the folding edge assembly and the sewing assembly are sequentially arranged on the main machine mounting position, the conveying assembly is arranged below the bag opening dust blowing assembly, the heat sealing assembly, the folding edge assembly and the sewing assembly, and the height of the main machine mounting position is adjusted by adjusting the height lifting mechanism; the bag opening dust blowing assembly is provided with at least a negative pressure generating mechanism, a bag feeding mechanism and a blowing mechanism, the bag feeding mechanism moves synchronously with the conveying assembly, the negative pressure generating mechanism generates negative pressure at the bag feeding mechanism to adsorb the bag opening to both sides, and the blowing mechanism extends into the open bag opening to blow off the material adhered to the inner side of the bag opening; the heat sealing assembly is provided with at least two strip-shaped heating blocks, the bottom of the heating block is provided with a plurality of guide rails perpendicular to the running direction of the packaging bag, a sliding block is arranged on each guide rail, and one of the heating blocks is fixed on the sliding block; the folding edge assembly comprises at least a first folding edge mechanism and a second folding edge mechanism, the folding edge mechanism is provided with a cylinder C and a folding edge plate, the folding edge plate is an L-shaped plate body, the cylinder C drives the folding edge plate to rotate, the two folding edge mechanisms fold the bag opening by 180° in turn, and the folded packaging bag is fed into the sewing assembly; the conveying assembly comprises at least a chain B and a sprocket B, the sprocket B comprises two driving sprockets and a plurality of driven sprockets, the driving sprockets are mounted on a gear box, the gear box drives the two driving sprockets to rotate in opposite directions synchronously through a speed reducer, and drives the chain B to convey transversely.

2. The automatic integrated machine for heat sealing of packaging bags according to claim 1, characterized in that: The height lifting mechanism comprises a chain A, a gear shaft and a gear box A, one of the main machine mounting positions is fixed with the gear box A, the gear box A is connected with the gear shaft, the gear shaft is connected with the main machine mounting position, the chain A is longitudinally arranged on the axial rack body of the main machine mounting position, a sprocket is mounted on the gear shaft, and the sprocket acts on the chain A.

3. The automatic integrated machine for heat sealing of packaging bags according to claim 1, characterized in that: The bag feeding mechanism comprises two hole-shaped synchronous belts and four pulleys, one of the pulleys is provided with a sprocket A, the sprocket A is connected with the chain B, the hole-shaped synchronous belt is provided with a negative pressure bag suction device, the negative pressure bag suction device is connected with the negative pressure generating mechanism, a region of the hole-shaped synchronous belt in contact with the negative pressure bag suction device generates negative pressure, the outer wall of the bag opening is adsorbed through the hole on the synchronous belt, and the bag opening is opened.

4. The automatic integrated machine for heat sealing of packaging bags according to claim 1, characterized in that: The blowing mechanism comprises a cylinder A and a blowing rod, the blowing rod is arranged below the cylinder A, the blowing rod is a hollow needle-shaped body, the lower part of the blowing rod is provided with a blowing hole, and the blowing rod is connected with a positive pressure gas source.

5. The automatic integrated machine for heat sealing of packaging bags according to claim 1, characterized in that: The folding edge assembly further comprises a rubber wheel set and a sprocket C, the sprocket C is connected with the chain B, the rubber wheel set comprises two rubber wheels arranged symmetrically left and right in the running direction of the packaging bag, and the sprocket C and one of the rubber wheels are connected through a chain.

6. The automatic integrated machine for heat sealing of packaging bags according to claim 1 or 4, characterized in that: The bag opening dust blowing assembly further comprises a negative pressure dust suction device, the negative pressure dust suction device is arranged behind the blowing mechanism, and the negative pressure dust suction device is connected with the negative pressure generating mechanism.

7. The automatic integrated machine for heat sealing of packaging bags according to claim 1, characterized in that: The heating block is provided with a cylinder B, and the heating block provided with a sliding block at the bottom is driven by the cylinder B to make reciprocating motion on the guide rail to realize the opening and closing of the two heating blocks.

8. The automatic integrated machine for heat sealing of packaging bags according to claim 1 or 7, characterized in that: The heating block is provided with a heating wire and a temperature sensor.

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