A PE bag heat sealing device

Abstract

The present invention discloses a PE bag heat-sealing device, comprising a main frame, a lifting unit, a transmission unit, a heat-sealing unit and a sewing unit; the lifting unit is installed on the column of the main frame of the equipment through a lifting cantilever, the transmission unit comprises a main board, a gap is left in the middle of the main board, a heating block and a pressure roller of the heat-sealing unit, a hemming device and a sewing machine of the sewing unit are sequentially arranged along the main board gap, and the heating block and the pressure roller are distributed on both sides of the main board gap; the transmission unit also includes a reduction motor, and the reduction motor indirectly provides power for the rotation of the pressure roller through a chain and a driven sprocket. The present invention adopts the device of the above structure, which integrates heat-sealing and sealing, and improves the sealing efficiency and sealing effect.

Description

Technical Field

[0001] The invention belongs to the technical field of PE bag sealing, and in particular relates to a PE bag heat sealing device. Background Art

[0002] In the current packaging market, suppliers have higher and higher requirements on the material and quality of packaging bags in order to improve their company image. Especially in the chemical, grain, feed, fertilizer and other industries, in order to prevent moisture and oxidation, the packaging of materials needs to be tight and not broken, so the packaging bags are generally plastic woven bags or paper bags with a PE bag inside. The traditional packaging method is to manually fold the PE inner bag tightly after the material is bagged and tie the inner bag mouth with a rubber band or string, and then sew the outer bag to seal. This packaging method is inefficient and has poor sealing effect. Summary of the invention

[0003] The purpose of the present invention is to provide a PE bag heat sealing device to solve the problems of low packaging efficiency and poor sealing effect.

[0004] To achieve the above-mentioned purpose, the present invention provides a PE bag heat-sealing device, comprising a main frame, a lifting unit, a transmission unit, a heat-sealing unit and a sewing unit;

[0005] The transmission unit includes a main board A and a main board B, which are connected to the lifting cantilever through a bracket, and the lifting cantilever is connected to the column of the main frame of the equipment through the lifting unit; a plurality of hanging plates are arranged on the main board A and the main board B, and a gap is arranged in the middle of the hanging plate for the PE bag to pass through, and the main board A and the main board B are respectively installed on both sides of the gap of the hanging plate; a mounting plate is arranged on the left hanging plate, and a reduction motor is arranged on the mounting plate; a driving gear and a driving sprocket are fixedly connected to the output shaft of the reduction motor, the driving gear is meshed with the driven gear, and the driven gear is fixedly connected to the driven sprocket through a connecting shaft; the driving sprocket and the driven sprocket are respectively installed in the The main board A and the main board B are below; the driving sprocket is connected to the first driven sprocket, the transition wheel and the second driven sprocket below the main board A through a chain, and the driven sprocket is connected to the transition wheel and the second driven sprocket below the main board B through a chain; the first driven sprocket is fixedly connected to the pressure roller sprocket above the main board A through a connecting shaft, and the pressure roller sprocket is connected to the pressure roller through a chain, and correspondingly, an auxiliary pressure roller is arranged above the main board B; the second driven sprocket is connected to the pulleys above the main board A and the main board B through a connecting shaft, respectively, and the pulley is connected to the auxiliary pulley through a high temperature resistant belt; the auxiliary pulley is adjacent to the pressure roller or the auxiliary pressure roller;

[0006] The lifting unit includes a plurality of lifting cantilevers, a fixed guard plate, a load-bearing guard plate, a chain, a connecting rod, a metal plate, a worm gear, a rolling wheel, and a handle;

[0007] The lifting cantilever is installed on the load-bearing guard plate, and the load-bearing guard plate is connected to the fixed guard plate through a pin shaft. The load-bearing guard plate and the fixed guard plate are installed on both sides of the column of the main frame of the equipment. A roller and a sprocket are arranged between the load-bearing guard plate and the fixed guard plate. A chain is arranged between the sprocket and the column of the main frame of the equipment. A worm wheel and a worm are arranged on the load-bearing guard plate in the middle. The end of the worm is fixedly connected to the handle, and the sprocket and the worm wheel are fixedly connected by a connecting rod.

[0008] The heat sealing unit includes a plurality of heating blocks, which are installed on the inner side of the high temperature resistant belt; the sewing unit includes a hemming device and a sewing machine which are sequentially arranged along the gap between the main board A and the main board B, and the hemming device is adjacent to the pressure roller.

[0009] Preferably, the heating block is divided into a fixed heating block and a floating heating block. The fixed heating block is installed on the main board A through an insulating ceramic column, and the floating heating block is installed on the main board B through a floating seat. The fixed heating block and the floating heating block correspond one to one.

[0010] Preferably, a bag-mouth dust removal device is installed at the front end above the main board A and the main board B in the transmission unit, a controller is also installed above the fixed heating block installed on the main board A through an insulating ceramic column, and a fan and a power box are installed on the lower side of the main frame of the equipment.

[0011] Preferably, a tightening plate is installed at the front end of the main board A and the main board B, and a tightening spring is arranged between the main board A and the tightening plate, and between the main board B and the tightening plate; the tightening plate is in the shape of a sharp blade, and a transition wheel is arranged at the front end.

[0012] Preferably, a smooth metal plate is arranged between the column and the roller, a plurality of rolling wheels are also arranged on the fixed guard plate and the load-bearing guard plate, and the sprocket and the roller are arranged in a diagonal direction.

[0013] Preferably, the floating seat includes a clamping stud, which is placed in the through hole of the eccentric adjustment sleeve, and the bottom end of the eccentric adjustment sleeve is installed in the square hole of the slide seat; the upper end of the clamping stud is connected to the locking nut, and the lower end passes through the eccentric adjustment sleeve and the slide seat and is fixed to the base; two ear seats are arranged at each end of the slide seat, and the guide column is placed in the two ear seats; one end of the guide column is connected to the floating heating block, and the other end is connected to the locking nut; a tightening ring and a spring are provided on the guide column, and the tightening ring is fixed on the guide column; the tightening ring and the spring are placed between the two ear seats of the slide seat; the slide seat is limited to the base by a guide block, the slide seat is slidably connected to the base, and the base is fixed on the main board B.

[0014] Preferably, a plurality of limiting members and fixing members are provided on the outer sides of the main board A and the main board B.

[0015] Preferably, the auxiliary pressure roller is mounted on the main board B via an adjustment seat that is adjustable frontward and rearward.

[0016] Preferably, metal guide grooves are provided above the fixed heating block and the floating heating block.

[0017] Preferably, a metal guide groove is provided below the hemming device of the sewing unit.

[0018] The present invention adopts the PE bag heat sealing device of the above structure, which integrates dust removal, heat sealing and sealing, and can realize heat sealing of the wrapped PE inner bag and folding and sewing of the outer bag. This sealing method not only improves the sealing efficiency and sealing effect, but also saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of a PE bag heat sealing device of the present invention;

[0020] Figure 2 It is a front schematic diagram of a lifting unit of an embodiment of a PE bag heat sealing device of the present invention;

[0021] Figure 3 It is a schematic diagram of the back side of a lifting unit of an embodiment of a PE bag heat sealing device of the present invention;

[0022] Figure 4 It is a bottom view schematic diagram of a conveying unit of an embodiment of a PE bag heat sealing device of the present invention;

[0023] Figure 5 It is a top view schematic diagram of a conveying unit of an embodiment of a PE bag heat sealing device of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a heat sealing unit of an embodiment of a heat sealing device for PE bags of the present invention;

[0025] Figure 7 It is a structural schematic diagram of a seam opening unit of an embodiment of a PE bag heat sealing device of the present invention;

[0026] Figure 8 It is an exploded view of a floating seat of an embodiment of a PE bag heat sealing device of the present invention;

[0027] Fig. 9 It is a combination diagram of a floating seat of an embodiment of a PE bag heat sealing device of the present invention.

[0028] Reference numerals

[0029] 1. Sewing unit; 2. Lifting unit; 3. Heat sealing unit; 4. Controller; 5. Bag mouth dust removal device; 6. Equipment main frame; 7. Fixed guard plate; 8. Lifting cantilever; 9. Chain; 10. Hanging plate; 11. Load-bearing guard plate; 12. Connecting rod; 13. Worm gear; 14. Rolling wheel; 15. Metal plate; 16. Power box; 17. Fan; 18. Handle; 19 Speed ​​reduction motor; 20. First driven sprocket; 21. Second driven sprocket; 22. Transition wheel; 23 Pressure roller sprocket; 24. Pressure roller; 25. Pulley; 26. Support Tightening plate; 27. Mounting plate; 28. Limiting piece; 29. ​​Auxiliary pulley; 30. High temperature resistant belt; 31. Fixing piece; 32. Metal guide groove; 33. Floating heating block; 34. Fixed heating block; 35. Floating seat; 36. Adjusting seat; 37. Flanger; 38. Sewing machine; 39. Auxiliary pressure roller; 40. Thermal sensor; 41. Heating rod; 42. Guide column; 43. Locking nut; 44. Tightening ring; 45. Spring; 46. Base; 47. Guide block; 48. Sliding seat; 49. Eccentric adjustment sleeve; 50. Clamping stud. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0031] like Figure 1-9 As shown, a PE bag heat sealing device includes an equipment main frame 6, a lifting unit 2, a transmission unit, a heat sealing unit 3 and a sewing unit 1.

[0032] The lifting unit 2 includes a plurality of lifting cantilevers 8, and the lifting cantilevers 8 are installed on a load-bearing guard plate 11. The load-bearing guard plate 11 is connected to the fixed guard plate 7 through a pin shaft, and the load-bearing guard plate 11 and the fixed guard plate 7 are installed on both sides of the column of the equipment main frame 6. Rollers and sprockets are arranged between the load-bearing guard plate 11 and the fixed guard plate 7. The sprockets and rollers are arranged in a diagonal direction, which can increase the load-bearing capacity of the column of the equipment main frame 6 on the lifting unit 2. The rollers guide the lifting and lowering of the lifting unit. A chain 9 is arranged between the sprocket and the column. The chain 9 is fixedly arranged on the column, and the sprocket moves up and down along the chain 9 on the column. A worm wheel 13 and a worm are arranged on the load-bearing guard plate 11 in the middle position, and the end of the worm is fixedly connected to the handle 18. Multiple sprockets and worm wheels 13 are fixedly connected by a connecting rod 12. The worm is driven to rotate by the handle 18, and the worm is meshed with the worm wheel 13, thereby driving the worm wheel 13 to rotate, and the worm wheel 13 drives the sprocket to rotate synchronously through the connecting rod 12, and the sprocket rotates up and down along the chain 9, thereby realizing the lifting and lowering of the lifting cantilever 8. By adjusting the height of the lifting cantilever 8, heat sealing of PE bags of different heights can be achieved.

[0033] A smooth metal plate 15 is arranged between the roller and the column, and a plurality of rolling wheels 14 in contact with the side of the column are arranged on the fixed guard plate 7 and the load-bearing guard plate 11. These measures can reduce the friction effect of the column of the equipment main frame 6 on the lifting unit 2 during the lifting process.

[0034] The transmission unit includes a main board A and a main board B, and the main boards A and B are connected to the lifting cantilever 8 through a bracket. A plurality of hanging plates 10 are arranged on the main boards A and B, and a gap is arranged in the middle of the hanging plates 10 for the PE bag to pass through, and the main boards A and B are respectively installed on both sides of the gap of the hanging plates 10. A mounting plate 27 is arranged on the left hanging plate 10, and a reduction motor 19 is arranged on the mounting plate 27. A driving gear and a driving sprocket are fixedly connected to the output shaft of the reduction motor 19, and the driving gear is meshed with the driven gear, and the driven gear is fixedly connected to the driven sprocket through a connecting shaft. The driving sprocket and the driven sprocket are respectively installed below the main boards A and B.

[0035] A tensioning plate 26 is installed at the front end of both the main board A and the main board B, and a tensioning spring is arranged between the main board A and the tensioning plate 26, and between the main board B and the tensioning plate 26. The tensioning plate 26 is in the shape of a sharp blade, and a transition wheel 22 is arranged at the front end. Under the elastic force of the tensioning spring, the tensioning plate 26 can tighten the chains under the main board A and the main board B.

[0036] The first driven sprocket 20, the transition wheel 22 and the second driven sprocket 21 are arranged below the main board A, and the transition wheel 22 and the second driven sprocket 21 are arranged below the main board B. The driving sprocket is connected to the first driven sprocket 20, the transition wheel 22 and the second driven sprocket 21 through a chain, and the driven sprocket is connected to the transition wheel 22 and the second driven sprocket 21 through a chain. The second driven sprocket 21 and the transition wheel 22 are installed at the same position on the main boards A and B.

[0037] The first driven sprocket 20 is fixedly connected to the pressure roller sprocket 23 above the main board A through a connecting shaft, and the pressure roller sprocket 23 is connected to the pressure roller 24 through a chain; accordingly, an auxiliary pressure roller 39 is arranged above the main board B, and the auxiliary pressure roller 39 is installed on the main board B through an adjustment seat 36 that can be adjusted forward and backward. The adjustment seat 36 can use an existing structure, for example, a spring is arranged between the adjustment seat 36 and the auxiliary pressure roller 39, and the auxiliary pressure roller 39 is tightly fitted with the pressure roller 24 under the elastic force of the spring.

[0038] The second driven sprocket 21 is fixedly connected to the pulleys 25 above the main board A and the main board B through the connecting shaft, and the pulleys 25 are connected to the auxiliary pulleys 29 through the high temperature resistant belts 30. The auxiliary pulleys 29 are adjacent to the pressing roller 24 or the auxiliary pressing roller 39, so that the heated PE bag can directly enter the pressing roller 24 for sealing.

[0039] The pressure roller 24 or the auxiliary pressure roller 39 on the same main board is located in a straight line with the pulley 25 and the auxiliary pulley 29 .

[0040] A plurality of limiters 28 and fixing members 31 are provided on the outside of the main board A and the main board B. The limiters 28 are used to limit the chain. The corresponding fixing members 31 on the main board A and the main board B are connected by a bracket, which is located above the fixing member 31 and is used to further connect and fix the main board A and the main board B.

[0041] The heat sealing unit 3 includes several heating blocks, which are located on the inner side of the high temperature resistant belt 30 to prevent adhesion between the PE bag and the heating block during the heating process. A through hole is provided in the middle of the heating block for the power supply heating rod 41 to pass through, and a thermal sensor 40 for detecting the temperature is also provided on it. The heating block is divided into a fixed heating block 34 and a floating heating block 33. The fixed heating block 34 is installed on the main board A through an insulating ceramic column, and the floating heating block 33 is installed on the main board B through a floating seat 35. The fixed heating block 34 and the floating heating block 33 correspond to each other one by one, and metal guide grooves 32 are provided above the fixed heating block 34 and the floating heating block 33.

[0042] The floating seat 35 includes a clamping stud 50, which is placed in the through hole of the eccentric adjustment sleeve 49, and the bottom end of the eccentric adjustment sleeve 49 is installed in the square hole of the slide 48. The upper end of the clamping stud 50 is connected to the locking nut 43, and the lower end passes through the eccentric adjustment sleeve 49 and the slide 48 and is fixed on the base 46. Two ear seats are respectively arranged at both ends of the slide 48, and the guide column 42 is placed on the two ear seats. One end of the guide column 42 is connected to the floating heating block 33, and the other end is connected to the locking nut 43. A tightening ring 44 and a spring 45 are sleeved on the guide column 42, and the tightening ring 44 is fixed on the guide column 42. The tightening ring 44 and the spring 45 are placed between the two ear seats of the slide 48. The slide 48 is limited on the base 46 by the guide block 47, and the slide 48 is slidably connected with the base 46, and the base 46 is fixed on the main board B. By adjusting the two locking nuts 43 of the floating seat 35 , the distance between the fixed heating block 34 and the floating heating block 33 can be adjusted.

[0043] The sewing unit 1 includes a hemming device 37 and a sewing machine 38 which are sequentially arranged along the gap between the main board A and the main board B. A metal guide groove 32 is arranged below the hemming device 37. The hemming device 37 is adjacent to the pressing roller 24, so that the heat-sealed packaging bag can directly enter the hemming device 37 for hemming. The hemming device 37 is opened and closed as needed. The sewing machine 38 is used to sew the outer bag of the packaging bag to further enhance the sealing of the packaging bag. The hemming device 37 and the sewing machine 38 are existing devices.

[0044] The metal guide groove 32 is fixed on the main board A and the main board B to guide the movement of the packaging bag.

[0045] The PE bag heat sealing device is also provided with a bag mouth dust removal device 5, a controller 4, a fan 17 and a power supply box 16. The bag mouth dust removal device 5 is located at the front end above the main board A and the main board B in the transmission unit, and is used to remove dust near the bag mouth of the PE bag to facilitate the heat sealing of the PE bag. The fan 17 and the power supply box 16 are installed at the lower side of the equipment main frame 6, and the fan 17 is used to blow away the slight odor generated by the thermal reaction. The controller 4 is located above the fixed heating block 34 installed on the main board A through the insulating ceramic column, and is electrically connected to the reduction motor 19, the sewing machine 38, the fixed heating block 34, the floating heating block 33, the thermal sensor 40, the bag mouth dust removal device 5, the fan 17 and the power supply box 16 respectively, and the connection method is the existing connection method. The bag mouth dust removal device 5 uses an existing device.

[0046] A pulley is provided below the equipment main frame 6 to facilitate the movement of the device.

[0047] During the operation, the main board A and the main board B are lifted to the appropriate position above the conveying platform by rotating the handle 18, and the bag opening of the packaging bag is placed in the gap between the main board A and the main board B. When the packaging bag moves forward with the conveying platform, the PE inner bag of the packaging bag first passes through the bag opening dust removal device 5 to remove dust from the bag opening of the PE inner bag, and then enters the heat sealing unit 3. The heating block of the heat sealing unit 3 heats the bag opening of the PE inner bag to a molten state, and then the PE inner bag is squeezed by the pressure roller 24 and the auxiliary pressure roller 39 to achieve heat sealing of the PE inner bag. After the heat sealing of the packaging bag is completed, it enters the hemming device 37 along the metal guide groove 32 for hemming, and finally enters the sewing machine 38 for sewing the outer bag of the packaging bag.

[0048] If the thickness of the PE bag is too thin or too thick, the best heat-sealing effect can be achieved by changing the distance between the fixed heating block 34 and the floating heating block 33 .

[0049] The distance between the fixed heating block 34 and the floating heating block 33 is determined by the position of the floating heating block 33 .

[0050] The position of the floating heating block 33 is adjusted by the floating seat 35 , and the adjustment is achieved by the adjusting guide column 42 and the eccentric adjusting sleeve 49 .

[0051] To adjust the guide column 42, loosen the locking nut 43 on the guide column 42, the distance between the locking nut 43 and the tight ring 44 increases, and under the action of elastic force, the spring 45 pushes the tight ring 44 to move forward, thereby driving the guide column 42 to move forward, and finally moving the floating heating block 33 forward, and the gap between the fixed heating block 34 and the floating heating block 33 becomes smaller; tighten the locking nut 43 on the guide column 42, the distance between the locking nut 43 and the tight ring 44 decreases, and the tight ring 44 compresses the spring 45, driving the floating heating block 33 to move backward, and the gap between the fixed heating block 34 and the floating heating block 33 increases.

[0052] To adjust the eccentric adjustment sleeve 49, loosen the locking nut 43 on the compression stud 50, and rotate the eccentric adjustment sleeve 49. Due to the effect of the eccentric part below this part, the slide seat 48 is pushed to slide back and forth as a whole, thereby adjusting the gap size between the fixed heating block 34 and the floating heating block 33.

[0053] When one adjustment method cannot meet the adjustment requirements, the above two methods can be used at the same time.

[0054] In summary, the present invention adopts the PE bag heat sealing device of the above structure, which integrates dust removal, heat sealing and sealing, and can realize the heat sealing of the PE inner bag of the packaging bag and the folding sewing of the outer bag. This sealing method not only improves the sealing efficiency and sealing effect, but also saves labor costs.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A PE bag heat sealing device, characterized in that: It includes equipment main frame, lifting unit, transmission unit, heat sealing unit and sewing unit; The transmission unit includes a main board A and a main board B, which are connected to the lifting cantilever through a bracket, and the lifting cantilever is connected to the column of the main frame of the equipment through the lifting unit; a plurality of hanging plates are arranged on the main board A and the main board B, and a gap is arranged in the middle of the hanging plate for the PE bag to pass through, and the main board A and the main board B are respectively installed on both sides of the gap of the hanging plate; a mounting plate is arranged on the left hanging plate, and a reduction motor is arranged on the mounting plate; a driving gear and a driving sprocket are fixedly connected to the output shaft of the reduction motor, the driving gear is meshed with the driven gear, and the driven gear is fixedly connected to the driven sprocket through a connecting shaft; the driving sprocket and the driven sprocket are respectively installed in the The main board A and the main board B are below; the driving sprocket is connected to the first driven sprocket, the transition wheel and the second driven sprocket below the main board A through a chain, and the driven sprocket is connected to the transition wheel and the second driven sprocket below the main board B through a chain; the first driven sprocket is fixedly connected to the pressure roller sprocket above the main board A through a connecting shaft, and the pressure roller sprocket is connected to the pressure roller through a chain, and correspondingly, an auxiliary pressure roller is arranged above the main board B; the second driven sprocket is connected to the pulleys above the main board A and the main board B through a connecting shaft, respectively, and the pulley is connected to the auxiliary pulley through a high temperature resistant belt; the auxiliary pulley is adjacent to the pressure roller or the auxiliary pressure roller; The lifting unit includes a plurality of lifting cantilevers, a fixed guard plate, a load-bearing guard plate, a chain, a connecting rod, a metal plate, a worm gear, a rolling wheel, and a handle; The lifting cantilever is installed on the load-bearing guard plate, and the load-bearing guard plate is connected to the fixed guard plate through a pin shaft. The load-bearing guard plate and the fixed guard plate are installed on both sides of the column of the main frame of the equipment. A roller and a sprocket are arranged between the load-bearing guard plate and the fixed guard plate. A chain is arranged between the sprocket and the column of the main frame of the equipment. A worm wheel and a worm are arranged on the load-bearing guard plate in the middle. The end of the worm is fixedly connected to the handle, and the sprocket and the worm wheel are fixedly connected by a connecting rod. The heat sealing unit includes a plurality of heating blocks, and the heating blocks are installed inside the high temperature resistant belt; The sewing unit comprises a hemming device and a sewing machine which are sequentially arranged along the gap between the main board A and the main board B, and the hemming device is adjacent to the pressing roller.

2. A PE bag heat sealing device according to claim 1, characterized in that: The heating block is divided into a fixed heating block and a floating heating block. The fixed heating block is installed on the main board A through an insulating ceramic column, and the floating heating block is installed on the main board B through a floating seat. The fixed heating block and the floating heating block correspond one to one.

3. A PE bag heat sealing device according to claim 1, characterized in that: A bag-mouth dust removal device is installed at the front end above the main board A and the main board B in the transmission unit, and a controller is also installed above the fixed heating block installed on the main board A through an insulating ceramic column. A fan and a power box are installed on the lower side of the main frame of the equipment.

4. A PE bag heat sealing device according to claim 1, characterized in that: A tightening plate is installed at the front end of the main board A and the main board B, and a tightening spring is arranged between the main board A and the tightening plate, and between the main board B and the tightening plate; the tightening plate is in the shape of a sharp blade, and a transition wheel is arranged at the front end.

5. A PE bag heat sealing device according to claim 1, characterized in that: A smooth metal plate is arranged between the column and the roller, and a plurality of rolling wheels are also arranged on the fixed guard plate and the load-bearing guard plate. The sprocket and the roller are arranged in diagonal directions.

6. A PE bag heat sealing device according to claim 2, characterized in that: The floating seat includes a clamping stud, which is placed in the through hole of the eccentric adjustment sleeve, and the bottom end of the eccentric adjustment sleeve is installed in the square hole of the slide; the upper end of the clamping stud is connected to the locking nut, and the lower end passes through the eccentric adjustment sleeve and the slide and is fixed to the base; two ear seats are arranged at each end of the slide, and the guide column is placed in the two ear seats; one end of the guide column is connected to the floating heating block, and the other end is connected to the locking nut; a tightening ring and a spring are provided on the guide column, and the tightening ring is fixed on the guide column; the tightening ring and the spring are placed between the two ear seats of the slide; the slide is limited to the base by a guide block, the slide is slidably connected to the base, and the base is fixed on the main board B.

7. A PE bag heat sealing device according to claim 1, characterized in that: The outer sides of the main board A and the main board B are both provided with a plurality of limiting parts and fixing parts.

8. A PE bag heat sealing device according to claim 1, characterized in that: The auxiliary pressure roller is mounted on the main board B via an adjustment seat that is adjustable frontward and rearward.

9. A PE bag heat sealing device according to claim 2, characterized in that: Metal guide grooves are arranged above the fixed heating block and the floating heating block of the heating block.

10. A PE bag heat sealing device according to claim 1, characterized in that: A metal guide groove is arranged below the hemming device of the sewing unit.

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