Pressing device for air column bag film laminating machine

Abstract

The invention discloses a material pressing device for an air column bag film laminating machine, and relates to the technical field of air column bag processing, the material pressing device comprises a top plate fixed on the film laminating machine, the bottom of the top plate is provided with a compression roller, the bottom of the top plate is fixedly connected with a positioning column, the outer part of the positioning column is sleeved with a compression spring, and the material pressing device further comprises a wide surface material pressing mechanism; the wide-face material pressing mechanism comprises a limiting frame connected to the positioning column in a sliding mode, sliding blocks are connected to the interior of the limiting frame in a sliding mode, a pressing roller is rotationally connected with the sliding blocks, an adjusting roller is rotationally connected between the sliding blocks, and a heating roller is further rotationally connected between the sliding blocks. Compared with direct pressing of a pressing roller, the large-area material pressing belt can provide more uniform pressure distribution in the film covering process, it is ensured that pressure obtained by the center area and the edge area of the material is consistent, the film covering quality problem caused by too large or too small local pressure is avoided, and the film covering effect of the air column bag material is improved.

Description

Technical Field

[0001] The invention relates to the technical field of air column bag processing, in particular to a material pressing device for an air column bag laminating machine. Background Art

[0002] The air column bag is a new type of cushioning packaging material, mainly composed of multiple independent air columns arranged side by side. The outer film of the air column bag is generally made of plastic material with certain flexibility and strength. The internal air column is a closed space formed between the films through heat sealing and other processes, which can be filled with air or other gases when in use.

[0003] In order to improve the strength, wear resistance and smoothness of the air column bag, the outer film used in the air column bag needs to be processed by a laminating machine. The laminating machine is a device used to cover a layer of film on the surface of various materials. Its basic function is to heat, pressurize, and apply glue to the plastic film (such as polyethylene, polypropylene film, etc.) to tightly fit the surface of paper, board, plastic sheet or special products such as air column bag film, so as to achieve the purpose of protection, decoration, moisture-proof, waterproof, and improve wear resistance.

[0004] The main function of the pressing mechanism used in the air column bag laminating machine is to apply a certain pressure during the laminating process so that the film can be firmly attached to the surface of the coating material (such as paper, plate, air column bag film, etc.), ensuring the quality of the laminating and avoiding problems such as loose fit between the film and the coating material and the generation of bubbles.

[0005] The traditional pressing device is generally composed of a spring and a roller. The roller applies pressure to the material under the elastic force of the spring. During the rolling process, the contact between the roller and the material is line contact (for cylindrical rollers) or narrow surface contact (for rollers with a certain width, but the width is still narrow relative to the material). According to the law of pressure distribution, when the roller applies pressure to the material, the pressure is unevenly distributed in the contact area. In the central part of the contact area, the pressure is relatively concentrated and relatively stable, while in the edge part, the pressure will diffuse outward. This diffusion causes the pressure per unit area of ​​the edge part to be less than that of the middle part, making it difficult for the edge of the material to obtain the same stable and sufficient pressure as the middle part, which can easily cause the coating material and the film to not fit firmly, thereby reducing the production quality of the air column bag film. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the material is subjected to uneven pressure from the rollers during the rolling process, resulting in a loose fit between the coated material and the film, thereby reducing the production quality of the air bag film, and to propose a material pressing device for an air bag laminating machine.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a material pressing device for an air column bag laminating machine, comprising a top plate fixed on the laminating machine, a pressing roller is arranged at the bottom of the top plate, a positioning column is fixedly connected to the bottom of the top plate, and a compression spring is sleeved on the outside of the positioning column, and further comprising: A wide surface pressing mechanism, the wide surface pressing mechanism comprises a limiting frame slidably connected to the positioning column, a slider is slidably connected inside the limiting frame, the pressing roller is rotatably connected to the slider, an adjusting roller is rotatably connected between the sliders, a heating roller is also rotatably connected between the sliders, a pressing belt is transmission-connected to the pressing roller, the heating roller and the adjusting roller, and an air jet assembly is arranged on the inner wall of the pressing belt; A support assembly, the support assembly comprising two arc-shaped plates respectively rotatably connected to the pressure roller, the two arc-shaped plates respectively being fixedly connected to a first support plate and a second support plate which are slidably connected to each other; The elastic force of the compression spring presses the bottom surface of the pressing belt onto the air column bag material passing through the laminating machine. The pressing belt moves in a circular motion under the action of friction. Hot air is sprayed out through the jet assembly to spread out and preheat the air column bag material before being compressed. The sliding of the slider drives the pressing roller to move, thereby adjusting the bottom area of ​​the pressing belt.

[0008] As a further description of the above technology, a material pressing device for an air column bag laminating machine is provided: a return spring is arranged between the slider and the inner wall of the limit frame, a fixing rod is fixedly connected to one side of the limit frame by bolts, and a connecting rod is rotatably connected between the fixing rod and the slider below it.

[0009] As a further description of the above-mentioned technology, a pressing device for an air column bag laminating machine is provided: the jet assembly includes a frame fixed to the inner wall of the pressing belt, the pressing belt and the frame are provided with air outlet holes, a sealing belt is fixedly connected to the inside of the frame, a pressure plate is fixedly connected to one side of the sealing belt, and a spring is fixedly connected to one side of the pressure plate.

[0010] As a further description of the above-mentioned technology, a material pressing device for an air column bag laminating machine is provided: a lifting piece is fixedly connected to the spring piece, and a lever is fixedly connected to the inside of the frame.

[0011] As a further description of the above technology, a pressing device for an air column bag laminating machine is provided: the pressing belt and the frame are provided with air outlet holes, the air outlet holes on the frame are arranged along a straight line, the air outlet holes on each straight line are inclined away from the middle of the frame, and the inclination angle gradually increases.

[0012] As a further description of the above-mentioned technology, a pressing device for an air bag laminating machine also includes a stretching mechanism, which includes a mounting plate fixed on a slider, two rotating wheels rotatably connected to the mounting plate, a bevel gear rotatably connected to the mounting plate and connected to the rotating wheel, a transmission belt is connected to the bevel gear and the pressure roller, and a friction belt is connected to the two rotating wheels.

[0013] As a further description of the above-mentioned technology, a material pressing device for an air column bag laminating machine is provided: the heating roller and the adjusting roller are both provided with a square groove for accommodating the jet assembly.

[0014] As a further description of the above technology, a material pressing device for an air column bag laminating machine is as follows: the bottom of the top plate is fixedly connected to a bottom plate located below the conveyor belt of the laminating machine, and a fixing ring is fixedly connected to the positioning column by bolts.

[0015] In summary, due to the use of the above-mentioned technology, the material pressing device for the air column bag laminating machine has the following beneficial effects: The pressure belt is used to press the coating material and the film during the lamination of the air column bag material. Compared with direct pressing by the pressure roller, the large-area pressure belt can provide more uniform pressure distribution during lamination, ensuring that the pressure obtained in the center area and the edge area of ​​the material is consistent, avoiding lamination quality problems caused by excessive or insufficient local pressure, and improving the lamination effect of the air column bag material. In addition, the large-area pressure belt can avoid the situation of local pressure concentration, and gently and evenly make the film and the coating material fit together during the pressing process, reducing the risk of damage to the material; In the existing device, since the pressing time of the material under the pressing roller is short, the glue in the material is difficult to solidify in time, and the pressure applied by the pressing roller to the material is strong, which easily causes the material to deform when being pressed by the pressing roller. When the deformation degree of the coating material and the film is different, the air column bag material after the film is uneven, and the glue between the film and the coating material is unevenly distributed, which reduces the quality of the air column bag material after the film is coated. Therefore, coating the air column bag material with a wide pressing belt can extend the pressing time of the material, make the glue between the materials fully solidify, and avoid the material deformation recovery after the material is pressed. Material separation, and the pressing of the pressing belt reduces the pressure on the material, reduces the possibility of different degrees of deformation of the coating material and the film, thereby improving the coating effect; The width of the bottom surface of the pressing belt can be adjusted, so that the pressing time of the material during lamination can be freely adjusted, and then the pressing time of the material can be adjusted according to the solidification time of the glue liquid, so that the pressing can be stopped after the material is completely attached, ensuring the quality of the product after lamination; When the pressing roller rotates, it can squeeze out the hot air inside the sealing belt from the air outlet, so that the hot air is sprayed onto the material before being pressed, preheating the material and the glue, making it easier for the materials to fit together, and the glue has better fluidity, which improves the uniformity of the glue distribution during pressing. Since the spring sheet will deform during the compression process, the air outlet will gradually close from the middle to the outside, so that the hot air will diffuse from the middle to the outside when it is discharged. This design can make the material receive the hot air diffused from the middle to the outside, so that the material is flattened, further improving the flatness of the material before compression, and helping to push out the air between the materials, further improving the bonding effect between the materials; When the spring sheet is deformed under pressure, it drives the lifter to move, so that the lifter and the lever are staggered and moved. The lifter vibrates under the movement, so that the hot air inside the sealing belt is disturbed, which promotes the uniform distribution of heat inside the sealing belt, thereby improving the use effect of hot air ejection. It is worth mentioning that both the spring sheet and the lifter have thermal conductivity, which is convenient for absorbing the heat of the heating roller to quickly heat up the air inside the sealing belt, and also helps to evenly distribute the heat inside the sealing belt; The bottom surface of the pressing belt is supported by the first support plate and the second support plate, and the conveyor belt of the laminating machine is supported by the fixing ring, so that the bending of the pressing belt and the conveyor belt caused by the reverse force of the material can be avoided, thereby ensuring the pressure effect of the material and increasing the maximum pressure intensity that the device can give to the material; The friction belt can stretch the material before being compressed to both sides under the action of friction force, so that the material is tightened before being compressed, avoiding folding of the material after being compressed, which may cause damage to the coated product. The pre-compression of the friction belt can prevent the material from fluctuating before pressing, thereby reducing the uncertainty during the lamination process and ensuring the quality of the lamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It shows a schematic diagram of the installation position provided in an embodiment of the present invention; Figure 2 It shows an overall schematic diagram provided according to an embodiment of the present invention; Figure 3 A schematic diagram of a limiting frame provided according to an embodiment of the present invention is shown; Figure 4 A schematic diagram showing the installation position of the jet assembly according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of a friction belt provided according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of a spring sheet provided according to an embodiment of the present invention is shown; Figure 7 The embodiment of the present invention provides Figure 6The enlarged schematic diagram at A in the middle; Figure 8 A schematic diagram of an air outlet provided according to an embodiment of the present invention is shown; Fig. 9 A cross-sectional schematic diagram of a first support plate provided according to an embodiment of the present invention is shown.

[0017] Legend: 10. Top plate; 11. Compression spring; 12. Compression roller; 13. Positioning column; 20. Wide-surface pressing mechanism; 21. Limiting frame; 22. Sliding block; 23. Return spring; 24. Connecting rod; 25. Fixing rod; 26. Adjusting roller; 27. Pressing belt; 28. Heating roller; 281. Square groove; 29. ​​Injection assembly; 291. Frame; 292. Air outlet; 293. Sealing belt; 294. Pressing plate; 295. Shrapnel; 296. Climbing piece; 297. Push rod; 210. Bottom plate; 211. Fixing ring; 30. Support assembly; 31. Arc plate; 32. First support plate; 33. Second support plate; 40. Stretching mechanism; 41. Mounting plate; 42. Transmission belt; 43. Bevel gear; 44. Rotating wheel; 45. Friction belt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a material pressing device for an air column bag laminating machine. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-Figure 9 As shown, the present invention provides a material pressing device for an air column bag laminating machine, comprising a top plate 10 fixed on the laminating machine, two pressing rollers 12 are arranged at the bottom of the top plate 10, two pairs of positioning columns 13 are fixedly connected to the bottom of the top plate 10, and the outer part of the positioning column 13 is sleeved with a compression spring 11, and further comprising: The wide surface pressing mechanism 20 comprises two limiting frames 21 respectively connected in a sliding manner to two pairs of positioning columns 13, three sliders 22 are connected in a sliding manner inside each limiting frame 21, the limiting frame 21 is T-shaped, two sliders 22 are connected in a transverse sliding manner to the limiting frame 21, and the remaining slider 22 is connected in a longitudinal sliding manner to the limiting frame 21, the two pressing rollers 12 are respectively connected in rotation to the sliders 22 opposite to each other that slide in a transverse direction, an adjusting roller 26 is connected in rotation between the two sliders 22 opposite to each other that slide in a longitudinal direction in the limiting frame 21, a heating roller 28 is also connected in rotation between the sliders 22, a pressing belt 27 is connected in a transmission manner to the pressing roller 12, the heating roller 28 and the adjusting roller 26, and an air jet assembly 29 is arranged on the inner wall of the pressing belt 27; The support assembly 30 includes two arc-shaped plates 31 respectively connected to the pressing roller 12 in rotation, and the two arc-shaped plates 31 are respectively fixedly connected to a first support plate 32 and a second support plate 33 which are slidably connected to each other. The purpose of the sliding connection between the first support plate 32 and the second support plate 33 is to adapt to the distance adjustment between the pressing rollers 12. The bottom surfaces of the first support plate 32 and the second support plate 33 are both in contact with the pressing belt 27 to support the bottom of the pressing belt 27, so as to prevent the bottom surface of the pressing belt 27 from bending upward due to the reverse force from the material, thereby ensuring pressure balance. The elastic force of the compression spring 11 presses the bottom surface of the pressing belt 27 onto the air column bag material passing through the laminating machine. Under the action of friction, the pressing belt 27 moves in a cycle, and hot air is sprayed through the jet assembly 29 to spread out and preheat the air column bag material before being compressed. The sliding of the slider 22 drives the pressure roller 12 to move, thereby adjusting the bottom area of ​​the pressing belt 27.

[0020] Reference Figure 3 A return spring 23 is provided between the slider 22 and the inner wall of the limit frame 21. A fixing rod 25 is fixedly connected to one side of the limit frame 21 by bolts. A connecting rod 24 is rotatably connected between the fixing rod 25 and the slider 22 below it. By adjusting the height of the fixing rod 25, the connecting rod 24 can push the slider 22 to adjust the distance between the two pressure rollers 12. This design can adjust the position of the two pressure rollers 12 at the same time, which is convenient to operate and avoids the misalignment of the pressure belt 27 caused by adjusting the position of the pressure roller 12 alone.

[0021] Reference Figure 6The jet assembly 29 includes a frame 291 fixed to the inner wall of the pressing belt 27. The frame 291 has a heat preservation effect, which reduces the heat loss inside the sealing belt 293. After the hot air inside the sealing belt 293 is discharged, the frame 291 still has a certain temperature. When the pressing belt 27 presses the material, the temperature of the frame 291 will be transferred to the pressing belt 27 to heat the material and accelerate the drying speed of the glue in the material. The pressing belt 27 and the frame 291 are both provided with air outlet holes 292, and the air outlet holes 292 of the two are connected. The sealing belt 293 is fixedly connected to the inside of the frame 291, and a pressing plate 294 is fixedly connected to one side of the sealing belt 293. A spring 295 is fixedly connected to one side of the pressing plate 294. When the pressing plate 294 is pressurized, the air inside the sealing belt 293 will be squeezed out through the air outlet holes 292.

[0022] Reference Figure 6 and Figure 7 A tilting piece 296 is fixedly connected to the spring piece 295, and a lever 297 is fixedly connected to the inside of the frame 291. When the spring piece 295 is compressed and deformed, the spring piece 295 drives the tilting piece 296 to move, so that the tilting piece 296 and the lever 297 move relative to each other, so that the tilting piece 296 is pushed by the lever 297, and the tilting piece 296 vibrates when being pushed, which can disturb the hot air inside the sealing belt 293 and promote the uniform distribution of heat. The spring piece 295 is compressed and deformed, and gradually closes the air outlet 292 from the middle to the outside in turn, thereby controlling the discharge position of the hot air, so that the hot air blows from the middle of the material to both sides, spreads the material, and keeps the material flat.

[0023] Reference Figure 4 and Figure 8 The air outlet holes 292 on the frame 291 are arranged along a straight line, and the air outlet holes 292 on each straight line are inclined in a direction away from the middle of the frame 291, and the inclination angle gradually increases. Under this design, the thrust of the blown air flow will smooth the material from the middle to both sides, squeeze out the air between the materials, thereby avoiding the formation of bubbles between the coating material and the film.

[0024] The spring piece 295 and the tilting piece 296 are made of metal and have thermal conductivity, so they can easily absorb and transfer the heat of the heating roller 28, so that the air inside the sealing belt 293 can be heated up quickly, and at the same time, it also helps to evenly distribute the heat inside the sealing belt 293.

[0025] Reference Figure 5, and also includes a stretching mechanism 40, which includes a mounting plate 41 fixed on the slider 22, and two rotating wheels 44 are rotatably connected to the mounting plate 41, and a bevel gear 43 that is transmission-connected to the rotating wheel 44 is rotatably connected to the mounting plate 41, and another bevel gear 43 is fixed on the rotating wheel 44, and the two bevel gears 43 are meshed with each other to realize transmission, and a transmission belt 42 is transmission-connected between the bevel gear 43 and the pressure roller 12, and a friction belt 45 is transmission-connected between the two rotating wheels 44. During the lamination process, the rotation of the pressure roller 12 will drive the rotating wheel 44 to rotate through the transmission belt 42 and the bevel gear 43, and drive the friction belt 45 to stretch the two sides of the material outward, so as to tension the material and prevent the material from being pressed in a wrinkled state to produce wrinkles.

[0026] Reference Figure 4 and Figure 5 The heating roller 28 and the adjusting roller 26 are both provided with a square groove 281 for accommodating the jet assembly 29. When the pressing belt 27 is in a circulating movement, the adjusting roller 26 and the heating roller 28 will rotate. At this time, the jet assembly 29 will be embedded in the square groove 281 to prevent the adjusting roller 26 and the heating roller 28 from squeezing the jet assembly 29 and squeezing out the internal air in advance. In addition, the design of the square groove 281 on the heating roller 28 can increase the contact area between the hot air around the heating roller 28 and the sealing belt 293, which is convenient for heat transfer.

[0027] Reference Figure 1 and Figure 2 The bottom of the top plate 10 is fixedly connected to a bottom plate 210 located below the laminating machine conveyor belt. The bottom plate 210 is used to support the laminating machine conveyor belt to prevent the conveyor belt from bending downward under pressure, resulting in the material being unable to be subjected to the predetermined pressure. A fixing ring 211 is fixedly connected to the positioning column 13 by bolts. By adjusting the position of the fixing ring 211 fixed on the positioning column 13, the compression amount of the compression spring 11 can be adjusted, thereby realizing the pressure adjustment of the pressing belt 27.

[0028] Working principle: adjust the fixed position of the fixing ring 211 on the positioning column 13, adjust the initial compression amount of the compression spring 11, control the pressure on the material, and adjust the position of the fixing rod 25 fixed on the limiting frame 21 according to the required compression time of the material. The position adjustment of the fixing rod 25 will drive the connecting rod 24 to push the slider 22 connected to it to move, drive the two pressing rollers 12 to move, and adjust the bottom width of the pressing belt 27. At the same time, the adjusting roller 26 and the slider 22 connected to it will move downward to keep the pressing belt 27 taut. The position adjustment of the two pressing rollers 12 drives the two arc-shaped plates 31 to move respectively, so that the first supporting plate 32 and the second supporting plate 33 slide relative to each other. After the first supporting plate 32 and the second supporting plate 33 slide relative to each other, they still contact the bottom of the pressing belt 27 to support the pressing belt 27 and prevent the pressing belt 27 from bending under pressure. When the laminating machine conveyor belt conveys the air column bag material, the material passes under the pressing belt 27, and the elastic force of the compression spring 11 applies a downward force to the limit frame 21, the slider 22, the pressing roller 12 and the pressing belt 27, so that the pressing belt 27 presses the material. As the material is conveyed, under the action of the friction between the material and the pressing belt 27, the pressing belt 27 performs a cyclic motion, driving the pressing roller 12, the adjusting roller 26 and the heating roller 28 to rotate. The pressing belt 27 does not slide relative to the material, so that the pressure on the material remains stable. The pressing roller 12 rotates to drive the rotating wheel 44 through the transmission belt 42 and the bevel gear 43, thereby driving the friction belt 45 to move cyclically to stretch the material before being pressed, so that the material is tensioned to avoid wavy wrinkles in the material due to uneven force, resulting in wrinkles after pressing; When the pressing plate 294 rotates to a point where it is not in contact with the pressing roller 12, the first support plate 32, and the second support plate 33, the pressing plate 294 loses external pressure. At this time, the compressed spring piece 295 recovers under the elastic force and drives the pressing plate 294 to pop out of the frame 291. The external air is sucked into the sealing belt 293 through the air outlet 292. When the pressing plate 294 moves with the pressing belt 27 to enter the square groove 281 on the heating roller 28, the heat generated by the heating roller 28 is transferred to the sealing belt 293 through the spring piece 295 and the tilting piece 296. 93, so that the air inside the air temperature rises, when the pressing plate 294 moves with the pressing belt 27 to be squeezed by the pressing roller 12, the internal pressure of the sealing belt 293 increases, and the internal hot air is ejected through the air outlet 292 under pressure to flatten and preheat the material, and when the pressing plate 294 is pressed to drive the spring piece 295 and the tilting piece 296 to move, the tilting piece 296 is moved by the lever 297 to vibrate, thereby disturbing the hot air inside the sealing belt 293, promoting uniform heat distribution, and allowing the ejected hot air to heat the material evenly.

[0029] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes to the pressing device for an air column bag laminating machine and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A material pressing device for an air column bag laminating machine, comprising a top plate (10) fixed on the laminating machine, a pressing roller (12) being arranged at the bottom of the top plate (10), a positioning column (13) being fixedly connected to the bottom of the top plate (10), a compression spring (11) being sleeved on the outside of the positioning column (13), characterized in that: Also includes: A wide surface pressing mechanism (20), the wide surface pressing mechanism (20) comprising a limiting frame (21) slidably connected to a positioning column (13), a slider (22) slidably connected inside the limiting frame (21), the pressing roller (12) and the slider (22) being rotatably connected, an adjusting roller (26) being rotatably connected between the sliders (22), a heating roller (28) being rotatably connected between the sliders (22), a pressing belt (27) being transmission-connected to the pressing roller (12), the heating roller (28) and the adjusting roller (26), and an injection assembly (29) being provided on the inner wall of the pressing belt (27); A support assembly (30), the support assembly (30) comprising two arc-shaped plates (31) respectively rotatably connected to the pressure roller (12), the two arc-shaped plates (31) respectively being fixedly connected to a first support plate (32) and a second support plate (33) which are slidably connected to each other; The elastic force of the compression spring (11) causes the bottom surface of the pressing belt (27) to be pressed against the air column bag material passing through the laminating machine. Under the action of friction, the pressing belt (27) moves in a circular motion, and the hot air is sprayed out through the jet assembly (29) to spread out and preheat the air column bag material before being compressed. The sliding block (22) slides to drive the pressing roller (12) to move, thereby adjusting the bottom area of ​​the pressing belt (27).

2. A material pressing device for an air column bag laminating machine according to claim 1, characterized in that: A return spring (23) is provided between the slider (22) and the inner wall of the limiting frame (21); a fixing rod (25) is fixedly connected to one side of the limiting frame (21) via bolts; a connecting rod (24) is rotatably connected between the fixing rod (25) and the slider (22) below it.

3. The material pressing device for an air column bag laminating machine according to claim 1, characterized in that: The jet assembly (29) comprises a frame (291) fixed to the inner wall of a pressing belt (27), the pressing belt (27) and the frame (291) are both provided with air outlet holes (292), a sealing belt (293) is fixedly connected to the interior of the frame (291), a pressing plate (294) is fixedly connected to one side of the sealing belt (293), and a spring sheet (295) is fixedly connected to one side of the pressing plate (294).

4. A material pressing device for an air column bag laminating machine according to claim 3, characterized in that: A lift piece (296) is fixedly connected to the spring piece (295), and a lever (297) is fixedly connected inside the frame (291).

5. A material pressing device for an air column bag laminating machine according to claim 4, characterized in that: The pressing belt (27) and the frame (291) are both provided with air outlet holes (292), the air outlet holes (292) on the frame (291) are arranged along a straight line, the air outlet holes (292) on each straight line are inclined in a direction away from the middle of the frame (291), and the inclination angle gradually increases.

6. The material pressing device for an air column bag laminating machine according to claim 1, characterized in that: The stretching mechanism (40) further comprises a stretching mechanism (40), the stretching mechanism (40) comprising a mounting plate (41) fixed on the slider (22), two rotating wheels (44) being rotatably connected to the mounting plate (41), a bevel gear (43) being rotatably connected to the mounting plate (41) and being transmission-connected to the rotating wheels (44), a transmission belt (42) being transmission-connected between the bevel gear (43) and the pressure roller (12), and a friction belt (45) being transmission-connected between the two rotating wheels (44).

7. The material pressing device for an air column bag laminating machine according to claim 1, characterized in that: The heating roller (28) and the adjusting roller (26) are both provided with a square groove (281) for accommodating the jet assembly (29).

8. The material pressing device for an air column bag laminating machine according to claim 5, characterized in that: The bottom of the top plate (10) is fixedly connected to a bottom plate (210) located below the conveyor belt of the laminating machine, and a fixing ring (211) is fixedly connected to the positioning column (13) via bolts.

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