Film blowing machine with automatic winding drum feeding and discharging functions

Abstract

The invention discloses a film blowing machine with automatic winding drum feeding and discharging functions, which is applied to the field of film blowing machines and comprises a machine body, a cutting mechanism is arranged in the machine body, a film connecting mechanism is arranged in the machine body, a moving mechanism is arranged on one side of the machine body, and a shaft taking mechanism is arranged at the top of the moving mechanism; after film material winding is completed, the cutting mechanism cuts off a film material, the film receiving mechanism is matched with the pushing mechanism to move the film material to a designated position, the moving mechanism drives the shaft taking mechanism to take out an air swelling shaft from the film material, the film material falls into the overturning disc, the overturning disc overturns to pour the film material into the trolley to be pulled away, and the feeding mechanism descends. The moving mechanism drives the air expansion shaft to be inserted into a paper tube to take down the paper tube, then the material pushing mechanism pushes a film material to a designated position, the mechanical gripper grabs the air expansion shaft and moves the air expansion shaft to the waiting area to wait for next roll changing, and therefore the purpose of facilitating material changing is achieved, labor is reduced, the machining cost is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of blown film machines, and particularly to a blown film machine with automatic roll loading and unloading function. Background Technology

[0002] A blown film machine heats and melts plastic particles before blowing them into a thin film. Dry polyethylene particles are added to the hopper and, by their own weight, enter the screw. When the particles contact the inclined plane of the screw, the rotating inclined plane generates a thrust perpendicular to the inclined plane, propelling the plastic particles forward. During this movement, friction occurs between the plastic and the screw, between the plastic and the barrel, and between the particles themselves, while the material gradually melts due to external heating of the barrel. The molten plastic is filtered through the die head to remove impurities and exits through the die. After being cooled by air circulation, inflated, and passed through a herringbone plate and traction rollers, the finished film is wound into a roll.

[0003] Existing film rolls are inconvenient for material changes. Generally, winding devices use winding rollers to wind the film material. Once the rollers are full, they need to be replaced. This replacement usually involves workers removing the wound film from the device, replacing it, and then reloading the new film. This process is cumbersome, increases workload, reduces efficiency, and is inconvenient to use. It also makes replacing the cutter difficult. After winding, the film needs to be cut with a cutter, which also needs to be replaced during use. Since cutters are bolted in place, they require a screwdriver for disassembly and reassembly, which is tedious, increases workload, reduces replacement efficiency, and is inconvenient to use. To solve these problems, we propose a blown film machine with automatic roll loading and unloading functionality. Summary of the Invention

[0004] The purpose of this invention is to provide a blown film machine with automatic roll loading and unloading function, which has the advantages of easy material change and easy cutting blade replacement.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a blown film machine with automatic roll loading and unloading function, comprising a machine body, a cutting mechanism and a film-joining mechanism disposed inside the machine body, a moving mechanism disposed on one side of the machine body, a shaft-taking mechanism disposed on the top of the moving mechanism, a feeding mechanism disposed on the surface of the machine body, a pressing mechanism disposed on the top of the feeding mechanism, a flipping mechanism disposed inside the machine body and located at the bottom of the feeding mechanism, a pushing mechanism disposed on the surface of the machine body, and a gripping mechanism disposed on the top of the machine body.

[0006] Using the above technical solution, after the film material is wound up, the cutting mechanism cuts the film material, the film receiving mechanism works with the pushing mechanism to move the film material to the designated position, the moving mechanism drives the shaft taking mechanism to remove the air shaft from the film material, the film material falls into the turning plate, the turning plate flips to pour the film material into the trolley and pull it away, the feeding mechanism descends, the moving mechanism drives the air shaft to insert into the paper tube, the paper tube is removed, and then the pushing mechanism pushes the film material to the designated position, the mechanical gripper picks up the air shaft and moves it to the waiting area to wait for the next roll change, thereby achieving the purpose of facilitating material change, reducing labor, reducing processing costs, and improving work efficiency.

[0007] The present invention is further configured such that: the cutting mechanism includes a first support frame, the first support frame is installed on the inner wall of the machine body, a roller is rotatably connected between the first support frames, a linear motor is bolted to the top of the first support frame, a mounting seat is bolted to the surface of the linear motor, a mounting rod is slidably sleeved on the inner wall of the mounting seat, a cutting blade is bolted to the top of the mounting rod, a pressing rod is slidably sleeved on the inner wall of the mounting seat, a spring is provided between one end of the pressing rod and the inner wall of the mounting seat, a snap-fit ​​connector is bolted to the surface of the pressing rod, and a snap-fit ​​hole is opened on the surface of the mounting rod, and the snap-fit ​​hole snaps into the snap-fit ​​connector.

[0008] By adopting the above technical solution, the clamping connector is disengaged from the clamping hole by moving the pressing rod, the cutting blade is removed, and a new cutting blade is installed in the mounting base. The pressing rod, under the action of the spring, drives the clamping connector to engage with the clamping hole and fix it in place, thereby facilitating the replacement of the cutting blade, reducing workload, and improving replacement efficiency.

[0009] The present invention is further configured such that: the film-coating mechanism includes a first support plate, the first support plate is bolted to the inner wall of the machine body, a first cylinder is bolted to the surface of the first support plate, a fixed seat is bolted to the output end of the first cylinder, the fixed seat is slidably connected to the inner wall of the first support plate, and an air expansion shaft is provided between the fixed seats.

[0010] By adopting the above technical solution and setting up a film splicing mechanism, it is convenient to fix and move the film material, and to roll up the film material.

[0011] The present invention is further configured such that: the moving mechanism includes a moving track, a slide is mounted on the surface of the moving track, a first motor is mounted on the surface of the slide, a transmission gear is mounted on the output end of the first motor and the transmission gear is located inside the slide, a toothed plate is engaged on the surface of the transmission plate and the toothed plate is bolted to the surface of the moving track.

[0012] By adopting the above technical solution and setting a moving mechanism, it is easy to remove or insert the air shaft.

[0013] The present invention is further configured such that: the shaft taking mechanism includes a second support frame, the second support frame is bolted to the top of the slide block, a second cylinder is installed on the inner wall of the second support frame, a slide plate is installed at the output end of the second cylinder, and the slide plate is installed on the surface of the second support frame, a third cylinder is installed on the surface of the slide plate, a clamping block is installed at the output end of the third cylinder, and the clamping block is slidably sleeved with the inner wall of the slide plate, a fixing plate is bolted to the surface of the slide plate, and an air filling / discharging head is fixedly sleeved on the inner wall of the fixing plate.

[0014] By adopting the above technical solution, the air shaft is clamped by setting a shaft-removing mechanism, which facilitates the removal and insertion of the paper tube and the inflation and deflation of the air shaft.

[0015] The present invention is further configured such that: the feeding mechanism includes a third support frame, the third support frame is installed inside the machine body, the top of the third support frame is rotatably connected to a feeding disc, and the bottom of the feeding disc is hinged to the third support frame with a fourth cylinder.

[0016] By adopting the above technical solution and setting up a feeding mechanism, it is easy to provide paper tubes and facilitate replacement.

[0017] The present invention is further configured such that: the clamping mechanism includes a fixed frame, the fixed frame is bolted to the top of the third support frame, a fifth cylinder is bolted to the surface of the fixed frame, and a clamping plate is bolted to the output end of the fifth cylinder.

[0018] By adopting the above technical solution, a pressing mechanism is set up to press the paper tube and prevent it from rolling off.

[0019] The present invention is further configured such that: the flipping mechanism includes a lifting frame, the lifting frame is installed inside the third support frame, a flipping disc is installed on the surface of the lifting frame, a sixth cylinder is installed between the lifting frame and the flipping disc, and a trolley is provided on one side of the flipping disc.

[0020] By adopting the above technical solution, a flipping mechanism is set up to flip the film material into the trolley, which is convenient for use.

[0021] The present invention is further configured such that: the pushing mechanism includes a seventh cylinder, the seventh cylinder is bolted to the surface of the third support frame, the output end of the seventh cylinder is equipped with a second support plate, the surface of the second support plate is equipped with a lifting support wheel, the surface of the second support plate is equipped with an eighth cylinder, and the output end of the eighth cylinder is equipped with a pushing block.

[0022] By adopting the above technical solution and setting up a pushing mechanism, the air shaft can be easily moved to a designated position, making it convenient to use.

[0023] The present invention is further configured such that: the material gripping mechanism includes a top frame, the top frame is installed on the top of the machine body, a screw is installed on the inner wall of the top frame, a second motor is installed at one end of the screw, a movable frame is installed on the surface of the screw, an electric lifting rod is installed at the bottom of the movable frame, and a mechanical gripper is installed at the bottom of the electric lifting frame.

[0024] By adopting the above technical solution, a material-grabbing mechanism is set up to grab the air shaft to the waiting area for convenient and timely replacement.

[0025] In summary, the present invention has the following beneficial effects: 1. This invention uses a cutting mechanism to cut the film after it is wound up, a film receiving mechanism and a pushing mechanism to move the film to a designated position, a moving mechanism to drive a shaft-removing mechanism to remove the air shaft from the film, and the film falls into a turning plate. The turning plate flips to pour the film into a trolley and pull it away. The feeding mechanism descends, the moving mechanism drives the air shaft to insert into a paper tube, the paper tube is removed, and then the pushing mechanism pushes the film to a designated position. A mechanical gripper picks up the air shaft and moves it to a waiting area to wait for the next roll change, thereby facilitating the change of film, reducing labor, lowering processing costs, and improving work efficiency. 2. This invention uses a moving pressing rod to disengage the clip from the clip hole, allowing the cutting blade to be removed and a new cutting blade to be installed in the mounting base. The pressing rod, under the action of a spring, causes the clip to engage with the clip hole, thus fixing it in place. This facilitates the replacement of the cutting blade, reduces workload, and improves replacement efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional view of the structure of the present invention; Figure 2 This is a partial three-dimensional structural view of the present invention; Figure 3 This is a partial three-dimensional view of the structure of the present invention; Figure 4 This is a perspective view of the cutting mechanism of the present invention; Figure 5 This is a partial structural cross-sectional view of the present invention; Figure 6 This is the present invention. Figure 2 Enlarged view of the structure at point A Figure 7 This is the present invention. Figure 2 Enlarged view of the structure at point B in the middle.

[0027] Reference numerals: 1. Machine body; 2. First support frame; 3. Roller; 4. Linear motor; 5. Mounting base; 6. Mounting rod; 7. Cutting blade; 8. Pressing rod; 9. Spring; 10. Snap-fit ​​connector; 11. Snap-fit ​​hole; 12. First support plate; 13. First cylinder; 14. Fixed base; 15. Air shaft; 16. Moving track; 17. Slide; 18. First motor; 19. Transmission gear; 20. Gear plate; 21. Second support frame; 22. Second cylinder; 23. Slide plate; 24. Third cylinder; 25. Clamping device 26. Block; 27. Mechanical gripper; 28. Fixing plate; 29. ​​Air inlet / outlet head; 30. Third support frame; 31. Feeding tray; 32. Fourth cylinder; 33. Fixing frame; 34. Fifth cylinder; 35. Pressing plate; 36. Lifting frame; 37. Tilting tray; 38. Sixth cylinder; 39. Trolley; 40. Seventh cylinder; 41. Second support plate; 42. Lifting support wheel; 43. Eighth cylinder; 44. Pushing block; 45. Top frame; 46. Screw; 47. Second motor; 48. Moving frame; 49. Electric lifting rod. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1: Reference Figure 1 , Figure 2 Figure 3 and Figure 4 A blown film machine with automatic roll loading and unloading function includes a machine body 1. A cutting mechanism and a film-feeding mechanism are installed inside the machine body 1. A moving mechanism is located on one side of the machine body 1, and a shaft-picking mechanism is located on the top of the moving mechanism. A feeding mechanism is located on the surface of the machine body 1, and a pressing mechanism is located on the top of the feeding mechanism. A tilting mechanism is located inside the machine body 1 and is situated at the bottom of the feeding mechanism. A pushing mechanism is located on the surface of the machine body 1. The top of the machine body 1 is equipped with a gripping mechanism. After the film is wound up, the cutting mechanism cuts the film. The film receiving mechanism, together with the pushing mechanism, moves the film to a designated position. The moving mechanism drives the shaft taking mechanism to remove the air shaft 15 from the film. The film falls into the turning plate. The turning plate flips and pours the film into the trolley 38 and pulls it away. The feeding mechanism descends, and the moving mechanism drives the air shaft 15 to insert into the paper tube. The paper tube is removed, and then the pushing mechanism pushes the film to a designated position. The mechanical gripper 26 picks up the air shaft 15 and moves it to the waiting area to wait for the next roll change. This achieves the purpose of facilitating material change, reducing labor, lowering processing costs, and improving work efficiency.

[0030] refer to Figure 1The film splicing mechanism includes a first support plate 12, which is bolted to the inner wall of the machine body 1. A first cylinder 13 is bolted to the surface of the first support plate 12. A fixed seat 14 is bolted to the output end of the first cylinder 13. The fixed seat 14 is slidably connected to the inner wall of the first support plate 12. An air expansion shaft 15 is provided between the fixed seats 14. By setting the film splicing mechanism, it is convenient to fix and move the film material and to roll up the film material.

[0031] refer to Figure 1 , Figure 2 and Figure 3 The moving mechanism includes a moving track 16, a slide 17 mounted on the surface of the moving track 16, a first motor 18 mounted on the surface of the slide 17, a transmission gear 19 mounted on the output end of the first motor 18, and the transmission gear 19 is located inside the slide 17. A toothed plate 20 meshes with the surface of the transmission plate 17, and the toothed plate 20 is bolted to the surface of the moving track 16. By setting the moving mechanism, it is convenient to remove or insert the air shaft 15.

[0032] refer to Figure 2 , Figure 3 and Figure 7 The shaft-removing mechanism includes a second support frame 21, which is bolted to the top of the slide block 17. A second cylinder 22 is installed on the inner wall of the second support frame 21. A slide plate 23 is installed at the output end of the second cylinder 22 and is mounted on the surface of the second support frame 21. A third cylinder 24 is installed on the surface of the slide plate 23. A clamping block 25 is installed at the output end of the third cylinder 24 and is slidably sleeved with the inner wall of the slide plate 23. A fixing plate 27 is bolted to the surface of the slide plate 23. An inflation / deflation head 28 is fixedly sleeved on the inner wall of the fixing plate 27. By setting the shaft-removing mechanism, the air-expanding shaft 15 is clamped, which facilitates the removal and insertion of the paper tube and the inflation / deflation of the air-expanding shaft 15.

[0033] refer to Figure 1 The material gripping mechanism includes a top frame 44, which is installed on the top of the machine body 1. A screw 45 is installed on the inner wall of the top frame 44. A second motor 46 is installed at one end of the screw 45. A movable frame 47 is installed on the surface of the screw 45. An electric lifting rod 48 is installed at the bottom of the movable frame 47. A mechanical gripper 26 is installed at the bottom of the electric lifting frame 35. By setting up the material gripping mechanism, the air shaft 15 is gripped to the waiting area for convenient and timely replacement.

[0034] Example 2: Reference Figure 1 , Figure 4 and Figure 5The cutting mechanism includes a first support frame 2, which is installed on the inner wall of the machine body 1. A roller 3 is rotatably connected between the first support frames 2. A linear motor 4 is bolted to the top of the first support frame 2. A mounting seat 5 is bolted to the surface of the linear motor 4. A mounting rod 6 is slidably sleeved on the inner wall of the mounting seat 5. A cutting blade 7 is bolted to the top of the mounting rod 6. A pressing rod 8 is slidably sleeved on the inner wall of the mounting seat 5. A spring 9 is provided between one end of the pressing rod 8 and the inner wall of the mounting seat 5. A snap-fit ​​connector 10 is bolted to the surface of the pressing rod 8. A snap-fit ​​hole 11 is opened on the surface of the mounting rod 6, and the snap-fit ​​hole 11 snaps into the snap-fit ​​connector 10. By moving the pressing rod 8, the snap-fit ​​connector 10 is disengaged from the snap-fit ​​hole 11, the cutting blade 7 is removed, and a new cutting blade 7 is installed into the mounting seat 5. Under the action of the spring 9, the pressing rod 8 drives the snap-fit ​​connector 10 to snap into the snap-fit ​​hole 11, fixing it in place. This achieves the purpose of facilitating the replacement of the cutting blade 7, reducing workload, and improving replacement efficiency.

[0035] refer to Figure 1 , Figure 2 and Figure 3 The feeding mechanism includes a third support frame 29, which is installed inside the machine body 1. The top of the third support frame 29 is rotatably connected to a feeding disc 30, and the bottom of the feeding disc 30 is hinged to the third support frame 29 with a fourth cylinder 31. By setting up the feeding mechanism, it is convenient to provide paper tubes and facilitate replacement.

[0036] refer to Figure 1 , Figure 2 and Figure 3 The pressing mechanism includes a fixed frame 32, which is bolted to the top of the third support frame 29. A fifth cylinder 33 is bolted to the surface of the fixed frame 32, and a pressing plate 34 is bolted to the output end of the fifth cylinder 33. By setting the pressing mechanism, the paper tube is pressed to prevent it from rolling off.

[0037] refer to Figure 2 and Figure 3 The flipping mechanism includes a lifting frame 35, which is installed inside the third support frame 29. A flipping disc 36 is installed on the surface of the lifting frame 35. A sixth cylinder 37 is installed between the lifting frame 35 and the flipping disc 36. A trolley 38 is provided on one side of the flipping disc 36. By setting the flipping mechanism, the film material is flipped into the trolley 38 for easy use.

[0038] refer to Figure 1 , Figure 2 and Figure 6The pushing mechanism includes a seventh cylinder 39, which is bolted to the surface of the third support frame 29. A second support plate 40 is installed at the output end of the seventh cylinder 39. A lifting support wheel 41 is installed on the surface of the second support plate 40. An eighth cylinder 42 is installed on the surface of the second support plate 40. A pushing block 43 is installed at the output end of the eighth cylinder 42. By setting up the pushing mechanism, it is easy to move the air shaft 15 to a designated position, which is convenient for use.

[0039] Brief description of the usage process: After the film material is wound up, the linear motor 4 drives the cutting blade 7 to move and cut the film material. Then, the first cylinder 13 drives the fixed seat 14 to move, causing the air expansion shaft 15 to move the film material. Then, the seventh cylinder 39 drives the second support plate 40 to move the pusher block 43 to the air expansion shaft 15. The eighth cylinder 42 drives the pusher block to raise the air expansion shaft 15 and disengage it from the fixed seat 14. Then, the seventh cylinder 39 retracts to the designated position. Then, the first motor 18 rotates, driving the gear to rotate and moving the second support frame 21 to one end of the air expansion shaft 15, causing the air expansion shaft 15 to move. One end of 5 is located between clamping blocks 25. The third cylinder 24 drives the clamping blocks 25 to clamp the air expansion shaft 15. Then, the second cylinder 22 drives the slide plate 23 to raise the air expansion shaft 15. Then, the air inlet / outlet head 28 releases air from the air expansion shaft 15. The lifting frame 35 drives the tilting plate 36 to rise, so that the tilting plate 36 supports the film material. The first motor 18 rotates in the opposite direction, so that the second support frame 21 moves in the opposite direction, pulling the air expansion shaft 15 out of the film material. Then, the lifting frame 35 lowers the film material to the designated position. The sixth cylinder 37 drives the tilting plate 36 to rotate, pouring the film material into the small... Cart 38 pulls away the film material. Fourth cylinder 31 retracts, lowering the feed tray 30. Then, second support frame 21 drives air shaft 15 to insert into the paper tube and inflates it, securing the paper tube. Fifth cylinder 33 retracts, releasing pressure plate 34 and pressing it against the paper tube. Second cylinder 22 lifts and removes the paper tube from the feed tray 30, resetting it. Second cylinder 22 lowers air shaft 15 to the designated position. Seventh cylinder 39 moves pusher block 43, pushing air shaft 15 to the desired position. Electric lifting rod 48 drives the mechanical... The gripper 26 picks up the air shaft 15, and then the second motor 46 rotates to move the moving frame 47 and the mechanical gripper 26 to the designated position, waiting for the next roll change, thus facilitating material change; press the pressing rod 8, the pressing rod 8 moves and drives the snap-fit ​​connector 10 to move, so that the snap-fit ​​connector 10 is disengaged from the snap-fit ​​hole 11, the cutting blade 7 is removed, the mounting rod 6 on the new cutting blade 7 is inserted into the mounting base 5, the pressing rod 8, under the action of the spring 9, drives the snap-fit ​​connector 10 to snap-fit ​​with the snap-fit ​​hole 11, and fixes it, thus facilitating the replacement of the cutting blade 7.

[0040] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A blown film machine with automatic roll loading and unloading function, comprising a machine body (1), characterized in that, The machine body (1) is provided with a cutting mechanism inside, a film-coating mechanism inside, a moving mechanism on one side of the machine body (1), a shaft-taking mechanism on the top of the moving mechanism, a feeding mechanism on the surface of the machine body (1), a pressing mechanism on the top of the feeding mechanism, a flipping mechanism inside the machine body (1), and the flipping mechanism is located at the bottom of the feeding mechanism, a pushing mechanism on the surface of the machine body (1), and a gripping mechanism on the top of the machine body (1).

2. The blown film machine with automatic roll loading and unloading function according to claim 1, characterized in that, The cutting mechanism includes a first support frame (2), which is installed on the inner wall of the machine body (1). A roller (3) is rotatably connected between the first support frames (2). A linear motor (4) is bolted to the top of the first support frame (2). A mounting seat (5) is bolted to the surface of the linear motor (4). A mounting rod (6) is slidably sleeved on the inner wall of the mounting seat (5). A cutting blade (7) is bolted to the top of the mounting rod (6). A pressing rod (8) is slidably sleeved on the inner wall of the mounting seat (5). A spring (9) is provided between one end of the pressing rod (8) and the inner wall of the mounting seat (5). A snap-fit ​​connector (10) is bolted to the surface of the pressing rod (8). A snap-fit ​​hole (11) is opened on the surface of the mounting rod (6), and the snap-fit ​​hole (11) snaps into the snap-fit ​​connector (10).

3. A blown film machine with automatic roll loading and unloading function according to claim 1, characterized in that, The film-coating mechanism includes a first support plate (12), which is bolted to the inner wall of the body (1). A first cylinder (13) is bolted to the surface of the first support plate (12), and a fixed seat (14) is bolted to the output end of the first cylinder (13). The fixed seat (14) is slidably connected to the inner wall of the first support plate (12), and an air expansion shaft (15) is provided between the fixed seats (14).

4. A blown film machine with automatic roll loading and unloading function according to claim 1, characterized in that, The moving mechanism includes a moving track (16), a slide (17) is mounted on the surface of the moving track (16), a first motor (18) is mounted on the surface of the slide (17), a transmission gear (19) is mounted on the output end of the first motor (18), and the transmission gear (19) is located inside the slide (17). A toothed plate (20) meshes with the surface of the transmission seat, and the toothed plate (20) is bolted to the surface of the moving track (16).

5. A blown film machine with automatic roll loading and unloading function according to claim 4, characterized in that, The shaft taking mechanism includes a second support frame (21), which is bolted to the top of the slide (17). A second cylinder (22) is installed on the inner wall of the second support frame (21). A slide plate (23) is installed at the output end of the second cylinder (22), and the slide plate (23) is installed on the surface of the second support frame (21). A third cylinder (24) is installed on the surface of the slide plate (23). A clamping block (25) is installed at the output end of the third cylinder (24), and the clamping block (25) is slidably sleeved with the inner wall of the slide plate (23). A fixing plate (27) is bolted to the surface of the slide plate (23), and an air filling / discharging head (28) is fixedly sleeved on the inner wall of the fixing plate (27).

6. A blown film machine with automatic roll loading and unloading function according to claim 1, characterized in that, The feeding mechanism includes a third support frame (29), which is installed inside the machine body (1). The top of the third support frame (29) is rotatably connected to a feeding disc (30), and the bottom of the feeding disc (30) is hinged to the third support frame (29) with a fourth cylinder (31).

7. A blown film machine with automatic roll loading and unloading function according to claim 6, characterized in that, The clamping mechanism includes a fixed frame (32), which is bolted to the top of the third support frame (29). A fifth cylinder (33) is bolted to the surface of the fixed frame (32), and a clamping plate (34) is bolted to the output end of the fifth cylinder (33).

8. A blown film machine with automatic roll loading and unloading function according to claim 6, characterized in that, The flipping mechanism includes a lifting frame (35), which is installed inside the third support frame (29). A flipping disc (36) is installed on the surface of the lifting frame (35). A sixth cylinder (37) is installed between the lifting frame (35) and the flipping disc (36). A trolley (38) is provided on one side of the flipping disc (36).

9. A blown film machine with automatic roll loading and unloading function according to claim 6, characterized in that, The pushing mechanism includes a seventh cylinder (39), which is bolted to the surface of the third support frame (29). The output end of the seventh cylinder (39) is equipped with a second support plate (40), and the surface of the second support plate (40) is equipped with a lifting support wheel (41). The surface of the second support plate (40) is equipped with an eighth cylinder (42), and the output end of the eighth cylinder (42) is equipped with a pushing block (43).

10. A blown film machine with automatic roll loading and unloading function according to claim 1, characterized in that, The material handling mechanism includes a top frame (44), which is installed on the top of the machine body (1). A screw (45) is installed on the inner wall of the top frame (44). A second motor (46) is installed at one end of the screw (45). A movable frame (47) is installed on the surface of the screw (45). An electric lifting rod (48) is installed at the bottom of the movable frame (47). A mechanical gripper (26) is installed at the bottom of the electric lifting frame (35).

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