A plastic film blow molding preparation system

Abstract

The present invention relates to the technical field of plastic film production, and in particular to a plastic film blow molding preparation system, comprising an extruder and a blow molder connected to a material discharge end of the extruder through a pipeline, a blow molding frame is arranged outside the blow molder, a blowing mechanism is arranged on the blow molder, a film discharge mechanism is arranged at the top of the blow molder and located outside the blowing mechanism, an annular cavity is arranged inside the blow molder and located outside the air outlet pipe of the blowing mechanism, a transverse groove is arranged in the middle position of the top of the blow molder and is connected to the annular cavity, an upper winding roller is rotatably connected to the inner side of the annular cavity, and a driving mechanism for driving the upper winding roller to rotate is arranged inside the annular cavity. The present invention can not only shield the blowing mechanism when not in use to prevent external dust and impurities from entering the pipeline, but also can be automatically opened when working, which can effectively prevent accumulated dust from adhering to the inner wall of the plastic film during the blow molding process, thereby improving the production quality of the device.

Description

Technical Field

[0001] The invention relates to the technical field of plastic film production, in particular to a plastic film blow molding preparation system. Background Art

[0002] Plastic film refers to a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, which can be used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly larger share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields. Plastic film blow molding is to extrude plastic into a thin tube, then blow the plastic with compressed air while hot, and then cool and shape it to obtain a tubular film product, and finally cut it to get the plastic film.

[0003] The prior art discloses a plastic film blow molding preparation system with publication number CN115583003A. The plastic film blow molding preparation system is easy to assemble and disassemble, reduces the difficulty of use, and improves practicality. The circular ring drives the straight rod to move up and down to adjust the position of the straight rod, changes the snap fixing form, eliminates the adjustment spacing, and is easy to operate and use. The cylinder moves downward, and the moving cylinder slides on the inner wall of the inclined groove, thereby causing the inclined plate to rotate inward without disassembly and reassembly, ensuring that the film controls the right roller to move to the left, realizing the roller spacing adjustment, and is easy to operate, improving work efficiency, and convenient for popularization and use.

[0004] However, there are still some defects in the actual use process. Since the compressed air outlet on the blow molding equipment is in an unobstructed state, when the equipment stops using, dust in the outside air can easily enter the blowing duct. Therefore, in the subsequent blow molding process, the dust in the duct can easily adhere to the surface of the plastic film, which will affect the production quality of the device and the use effect is poor.

[0005] Therefore, a plastic film blow molding preparation system is proposed to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a plastic film blow molding preparation system.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: a plastic film blow molding preparation system, including an extruder, and a blow molder connected to the discharge end of the extruder through a pipeline, a blow molding frame is provided on the outside of the blow molder, a blowing mechanism is provided on the blow molder, a film discharge mechanism is provided on the top of the blow molder and located outside the blowing mechanism, an annular cavity is provided inside the blow molder and located outside the air outlet pipe of the blowing mechanism, a transverse groove is provided in the middle of the top of the blow molder and is connected to the annular cavity, an upper winding roller is rotatably connected to the inside of the annular cavity, and a driving mechanism for driving the upper winding roller to rotate is provided on the inside of the annular cavity;

[0008] The outer wall of the upper winding roller is wrapped with a main cover, and one end of the main cover is fixedly connected to the outer wall of the upper winding roller, the other end of the main cover is fixedly connected to a pair of sub-covers, and the sub-covers are arranged above the air outlet pipe of the blowing mechanism, the two ends of the sub-covers away from each other are fixedly connected to pull covers, and the two sides of the annular cavity are rotatably connected to the lower winding roller, a pair of through grooves are opened on both sides of the top of the blow molding device, the inner sides of the through grooves are rotatably connected to top rollers, the other ends of the pull covers pass through the top rollers and are wrapped around the outer wall of the lower winding roller, and the ends of the pull covers are fixedly connected to the outer wall of the lower winding roller, and the bottom end of the annular cavity is rotatably connected to a gear ring;

[0009] Both ends of the side wall of the lower winding roller are provided with inward grooves, and the inner sides of the grooves are provided with spiral springs, one end of the spiral springs is fixedly connected to the inner side of the grooves, and the other end of the spiral springs is fixedly connected to the inner side of the annular cavity;

[0010] The upper winding roller is driven to rotate by the driving mechanism, thereby winding the main cover and pulling the sub-cover to move toward the horizontal groove, thereby gradually releasing the obstruction to the blowing mechanism, and at the same time pulling the part of the pull cover wrapped on the lower winding roller to gradually rotate out, and because one end of the pull cover is fixedly connected to the lower winding roller, and one end of the vortex spring is fixedly connected to the inner side of the groove, and the other end is fixedly connected to the inner side of the annular cavity, the vortex spring will be gradually compressed through the rotation of the lower winding roller, so that it can be automatically opened during work, and it can effectively prevent accumulated dust from adhering to the inner wall of the plastic film during the blow molding process when not in use, thereby improving the production quality of the device. Finally, when not in use, control the drive motor to rotate in the reverse direction, and repeat the above operation in the reverse direction.

[0011] In the above technical solution, further, the driving mechanism includes a driving motor, the driving motor is fixedly connected to the outer wall of the blow molder and is located below the annular cavity, the output end of the driving motor passes through the bottom of the annular cavity and is fixedly connected to a gear, the gear and the gear ring are meshed with each other, the top of the gear ring is fixedly connected to a lower conical gear ring, the outer wall of the upper winding roller is fixedly connected to an upper conical gear meshed with the lower conical gear ring, the driving motor is started and driven to rotate by controlling the gear, which in turn drives the meshing gear ring to rotate, and at the same time drives the lower conical gear ring to rotate, and then drives the meshing upper conical gear to rotate, and then drives the upper winding roller to rotate, so as to automatically wind up the main cover and the sub-cover.

[0012] In the above technical solution, further, a guide roller for separating the sub-covers is fixedly connected to the inner side of the transverse groove. Through the setting of the guide roller, it can guide the moving direction of the sub-covers during winding and unwinding, thereby improving the stability of the device during operation.

[0013] In the above technical scheme, further, an upper scraper for scraping impurities on the sub-cover is fixedly connected to the inner side of the transverse groove, a receiving groove is provided on one side of the transverse groove, a lower scraper for scraping impurities on the upper scraper is slidably connected to the inner side of the receiving groove, a collecting groove is provided on the other side of the transverse groove, a fixing ring is rotatably connected to the inner side of the annular cavity and located above the gear ring, a pull rope is fixedly connected between the lower scraper and the fixing ring, a fixing groove is provided on the top of the blow molder and located next to the collecting groove, and the fixing groove is communicated with the collecting groove, a bottom block is fixedly connected to the bottom of the fixing ring, a top block is fixedly connected to the bottom of the fixing ring, and the bottom block and the top block are symmetrically arranged;

[0014] When the driving mechanism operates to retract the sub-covers, the dust and impurities accumulated on the sub-covers on both sides can be scraped off through the setting of the upper scraper. When the sub-covers are fully retracted, the bottom block above the gear ring rotates to the side of the top block, and then the gear ring continues to rotate, which drives the fixed ring to rotate together, and then pulls the pull rope to drive the lower scraper to slide out of the storage groove, and then scrapes the debris scraped on the upper scraper, pushing the debris to one side of the collection groove. At the same time, it will continue to drive the upper winding roller to rotate, and then the winding sub-cover pulls the excess part of the pull cover out of the lower winding roller, and then the lower scraper pushes the debris on the upper scraper into the collection groove, and then slides into the collection box, and at the same time gradually stretches the reset spring, so as to automatically collect the scraped dust and impurities after the cleaning is completed, which is convenient for subsequent unified processing and prevents the dust collected during the blow molding process from floating up.

[0015] In the above technical solution, further, an upper roller is longitudinally and rotatably connected to the inner side of the annular cavity, and a lower roller is transversely and rotatably connected to the inner side of the annular cavity. The pull rope passes through the outer walls of the upper roller and the lower roller. Through the setting of the upper roller and the lower roller, the sliding direction of the pull rope can be guided, thereby improving the stability of the device during operation, so that the pull rope can be pulled by the rotation of the fixed ring to drive the lower scraper to slide.

[0016] In the above technical solution, further, a return spring is fixedly connected between the inner side of the receiving groove and the lower scraper plate, and the return spring facilitates the rapid return of the lower scraper plate.

[0017] In the above technical solution, further, the bottom of the collecting groove is inclined toward one side of the fixed groove, a collecting box is provided on the inner side of the fixed groove, an opening is provided on the side wall of the collecting box, a blocking block is threadedly connected to the top of the collecting box, and a rotating ring is fixedly connected to the top of the blocking block. Through the setting of the collecting box, the dust cleaned by the lower scraper can be collected, and when the collection box is full of debris, the rotating ring can be pulled to pull out the collection box, and then the rotating ring can be rotated to unscrew the blocking block, so that the debris in the collection box can be poured out, and then the reverse operation can be performed to put it back into the collection box.

[0018] In the above technical solution, further, a touch sensor is provided on the inner side of the collecting trough. When the device is running, when the lower scraper is pulled to the collecting trough by the pull rope driven by the fixed ring, the lower scraper will touch the touch sensor, and then the touch sensor will transmit the signal to the controller, and the controller will control the drive motor to turn off, thereby realizing the automatic stop of the device without manual operation, thereby improving the convenience of the device.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the cooperation of the driving mechanism, upper winding roller, main cover and sub-cover, the blowing mechanism can not only be shielded when not in use to prevent external dust and impurities from entering the pipeline, but also be automatically opened during operation, which can effectively prevent the accumulated dust from adhering to the inner wall of the plastic film during the blow molding process and improve the production quality of the device.

[0021] 2. Through the cooperation of the upper scraper, the lower scraper and the fixed ring, not only can the dust and impurities dropped on the sub-cover be cleaned while the sub-cover is retracted, but also the scraped dust and impurities can be automatically collected after the cleaning is completed, which is convenient for subsequent unified treatment and avoids the dust collected during the blow molding process from floating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall appearance structure of the blow molding preparation system of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the blow molding device of the present invention when it is working;

[0024] Figure 3 It is a schematic diagram of a partially cutaway three-dimensional structure of the blow molding device of the present invention;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 5 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at B in the middle;

[0027] Figure 6 It is a schematic diagram of the overall appearance structure of the driving mechanism, main cover, sub-cover and pull cover of the present invention;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the gear ring and the fixing ring of the present invention in full cross-section from the side;

[0029] Figure 8 It is a schematic diagram of a partial side full-section three-dimensional structure of the blow molding device of the present invention;

[0030] Fig. 9 For the present invention Figure 8 Schematic diagram of the partial enlarged structure at point C in the middle.

[0031] In the figure: 1. extruder; 2. blow molder; 3. blow molding frame; 4. blowing mechanism; 5. annular cavity; 6. upper winding roller; 7. main cover; 8. sub-cover; 9. pulling cover; 10. lower winding roller; 11. through groove; 12. top roller; 13. groove; 14. volute spring; 15. driving motor; 16. gear; 17. gear ring; 18. lower conical gear ring; 19. upper conical gear; 20. upper scraper; 21. storage groove; 22. lower scraper; 23. collecting groove; 24. fixing ring; 25. pull rope; 26. fixing groove; 27. bottom block; 28. guide roller; 29. ​​upper roller; 30. reset spring; 31. collecting box; 32. opening; 33. blocking block; 34. lower roller; 35. touch sensor; 36. film discharging mechanism; 37. rotating ring; 38. transverse groove; 39. top block. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figure 1-9 A plastic film blow molding preparation system shown in the figure comprises an extruder 1, and a blow molder 2 connected to the discharge end of the extruder 1 through a pipeline, a blow molding frame 3 is arranged on the outside of the blow molder 2, a blowing mechanism 4 is arranged on the blow molder 2, a film discharge mechanism 36 is arranged on the top of the blow molder 2 and located on the outside of the blowing mechanism 4, an annular cavity 5 is opened inside the blow molder 2 and located on the outside of the air outlet pipe of the blowing mechanism 4, a transverse groove 38 is opened in the middle position of the top of the blow molder 2 and is connected to the annular cavity 5, an upper winding roller 6 is rotatably connected to the inside of the annular cavity 5, and a driving mechanism for driving the upper winding roller 6 to rotate is arranged on the inside of the annular cavity 5;

[0035] The outer wall of the upper winding roller 6 is wrapped with a main cover 7, and the main cover 7 connects the two sub-covers 8 together, and one end of the main cover 7 is fixedly connected to the outer wall of the upper winding roller 6, and the other end of the main cover 7 is fixedly connected to a pair of sub-covers 8, and the sub-covers 8 can block the top of the blowing mechanism 4, and the sub-covers 8 are arranged above the air outlet pipe of the blowing mechanism 4, and the two ends of the sub-covers 8 are fixedly connected with pull covers 9 on the side away from each other, and the pull covers 9 ensure that the sub-covers 8 can be pulled to reset, and the blowing function of the blowing mechanism 4 will not be hindered, and the annular cavity 5 are rotatably connected to the lower winding roller 10 on both sides, a pair of through grooves 11 are opened on both sides of the top of the blow molding device 2, and the inner sides of the through grooves 11 are rotatably connected to the top rollers 12, which can guide the sliding of the pull cover 9, reduce the friction between the pull cover 9 and the corner when moving, and improve the service life of the device. The other end of the pull cover 9 passes through the top roller 12 and is wound around the outer wall of the lower winding roller 10, and the ends of the pull cover 9 are fixedly connected to the outer wall of the lower winding roller 10, and the bottom end of the annular cavity 5 is rotatably connected to the gear ring 17;

[0036] Both ends of the side wall of the lower winding roller 10 are provided with an inwardly sunken groove 13, and a spiral spring 14 is provided inside the groove 13. One end of the spiral spring 14 is fixedly connected to the inside of the groove 13, and the other end of the spiral spring 14 is fixedly connected to the inside of the annular cavity 5.

[0037] The driving mechanism includes a driving motor 15, which is fixedly connected to the outer wall of the blow molding machine 2 and is located below the annular cavity 5. The output end of the driving motor 15 passes through the bottom of the annular cavity 5 and is fixedly connected to a gear 16. The gear 16 is meshed with a gear ring 17. A lower conical gear ring 18 is fixedly connected to the top of the gear ring 17. An upper conical gear 19 meshing with the lower conical gear ring 18 is fixedly connected to the outer wall of the upper winding roller 6.

[0038] When the blow molding device needs to work, the drive motor 15 can be controlled to start and drive the gear 16 to rotate, which in turn drives the meshing gear ring 17 to rotate, and at the same time drives the lower conical gear ring 18 to rotate, and then drives the meshing upper conical gear 19 to rotate, and then drives the upper winding roller 6 to rotate, so as to rewind the main cover 7, pull the sub-cover 8 to move toward the horizontal groove 38, so as to gradually release the shielding of the blowing mechanism 4, and at the same time pull the pull cover 9 on the lower winding roller 10 The winding part is gradually rotated out, and by One end of the pull cover 9 is fixedly connected to the lower winding roller 10, and one end of the spiral spring 14 is fixedly connected to the inner side of the groove 13, and the other end is fixedly connected to the inner side of the annular cavity 5. Therefore, through the rotation of the lower winding roller 10, the spiral spring 14 will be gradually compressed, so as to realize automatic opening during operation, and can effectively prevent the accumulated dust from adhering to the inner wall of the plastic film during the blow molding process when not in use, thereby improving the production quality of the device. Finally, when not in use, control the drive motor 15 to rotate in the reverse direction and repeat the above operation in the reverse direction.

[0039] In order to guide the winding of the sub-covers 8, a guide roller 28 for separating the sub-covers 8 is fixedly connected to the inner side of the transverse groove 38. Through the setting of the guide roller 28, the moving direction of the sub-covers 8 can be guided during winding and unwinding, thereby improving the stability of the device during operation.

[0040] In order to clean the dust and impurities dropped on the sub-cover 8 while the sub-cover 8 is retracted, an upper scraper 20 for scraping impurities on the sub-cover 8 is fixedly connected to the inner side of the transverse groove 38, a receiving groove 21 is provided on one side of the transverse groove 38, a lower scraper 22 for scraping impurities on the upper scraper 20 is slidably connected to the inner side of the receiving groove 21, a collecting groove 23 is provided on the other side of the transverse groove 38, a fixing ring 24 is rotatably connected to the inner side of the annular cavity 5 and located above the gear ring 17, and a pull rope 25 is fixedly connected between the lower scraper 22 and the fixing ring 24;

[0041] A fixing groove 26 is provided at the top of the blow molder 2 and beside the collecting groove 23, and the fixing groove 26 is communicated with the collecting groove 23. A bottom block 27 is fixedly connected to the bottom of the fixing ring 24, and a top block 39 is fixedly connected to the bottom of the fixing ring 24, and the bottom block 27 and the top block 39 are symmetrically arranged. A return spring 30 is fixedly connected between the inner side of the receiving groove 21 and the lower scraper 22, and the return spring 30 facilitates the rapid return of the lower scraper 22.

[0042] When the driving mechanism operates to retract the sub-cover 8, the dust and impurities accumulated on the sub-covers 8 on both sides can be scraped off by the setting of the upper scraper 20. When the sub-cover 8 is fully retracted, the bottom block 27 above the gear ring 17 rotates to the side of the top block 39, and then the fixed ring 24 is driven to rotate together through the continued rotation of the gear ring 17, thereby pulling the pull rope 25 to drive the lower scraper 22 to slide out of the storage groove 21, and then the debris scraped off on the upper scraper 20 is scraped off, and the debris is pushed to one side of the collecting groove 23. At the same time, the upper winding roller 6 will continue to be driven to rotate, and then the winding sub-cover 8 will pull the excess part of the pull cover 9 out of the lower winding roller 10, and then the lower scraper 22 will push the debris on the upper scraper 20 into the collecting groove 23, and then slide into the collecting box 31, and at the same time, the reset spring 30 will be gradually stretched, so as to realize that the scraped dust and impurities are automatically collected after the cleaning is completed, which is convenient for subsequent unified treatment and at the same time avoids the dust collected during the blow molding process from floating.

[0043] In order to guide the sliding of the pull rope 25, an upper roller 29 is connected to the inner side of the annular cavity 5 for longitudinal rotation, and a lower roller 34 is connected to the inner side of the annular cavity 5 for transverse rotation. The pull rope 25 passes through the outer walls of the upper roller 29 and the lower roller 34.

[0044] The upper roller 29 and the lower roller 34 can guide the sliding direction of the pull rope 25, thereby improving the stability of the device during operation, so that the pull rope 25 can be pulled by the rotation of the fixed ring 24 to drive the lower scraper 22 to slide.

[0045] In order to facilitate the processing of the collected dust, the bottom of the collecting groove 23 is inclined toward one side of the fixed groove 26, so that the dust pushed out by the lower scraper 22 can slide into the collecting box 31 to guide the material. A collecting box 31 is provided inside the fixed groove 26, and an opening 32 is provided on the side wall of the collecting box 31. A blocking block 33 is threadedly connected to the top of the collecting box 31, and a rotating ring 37 is fixedly connected to the top of the blocking block 33.

[0046] By setting the collecting box 31, the dust cleaned by the lower scraper 22 can be collected. When the collecting box 31 is full of debris, the rotating ring 37 can be pulled to pull out the collecting box 31, and then the rotating ring 37 can be rotated to unscrew the blocking block 33, so that the debris in the collecting box 31 can be poured out, and the collecting box 31 can be put back in the reverse operation.

[0047] In order to improve the automation efficiency of the device, a touch sensor 35 is provided on the inner side of the collecting tank 23. The model of the touch sensor 35 is AGO-5, and the touch sensor 35 is electrically connected to the drive motor 15 through the controller. When the device is running, the pull rope 25 is driven by the fixed ring 24 to pull the lower scraper 22 to the collecting tank 23, and the lower scraper 22 will touch the touch sensor 35. Then the touch sensor 35 transmits a signal to the controller, and the controller controls the drive motor 15 to turn off, thereby realizing the automatic stop of the device without manual operation, thereby improving the convenience of the device.

[0048] The basic principles, main features and advantages of the present invention are shown and described above.

[0049] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A plastic film blow molding preparation system, comprising an extruder (1), and a blow molder (2) connected to a discharge end of the extruder (1) through a pipeline, a blow molding frame (3) is provided on the outside of the blow molder (2), a blowing mechanism (4) is provided on the blow molder (2), and a film discharge mechanism (36) is provided on the top of the blow molder (2) and outside the blowing mechanism (4), characterized in that: An annular cavity (5) is provided inside the blow molder (2) and outside the air outlet pipe of the blowing mechanism (4); a transverse groove (38) is provided in the middle of the top of the blow molder (2) and is connected to the annular cavity (5); an upper winding roller (6) is rotatably connected inside the annular cavity (5); and a driving mechanism for driving the upper winding roller (6) to rotate is provided inside the annular cavity (5); The outer wall of the upper winding roller (6) is wound with a main cover (7), and one end of the main cover (7) is fixedly connected to the outer wall of the upper winding roller (6), and the other end of the main cover (7) is fixedly connected to a pair of sub-covers (8), and the sub-covers (8) are arranged above the air outlet pipe of the blowing mechanism (4), and the two ends of the sub-covers (8) are fixedly connected to pull covers (9) on the opposite sides, and the two sides of the annular cavity (5) are rotatably connected to the lower winding roller (10), and the two sides of the top of the blow molding device (2) are provided with a pair of through grooves (11), and the inner sides of the through grooves (11) are rotatably connected to the top rollers (12), and the other ends of the pull covers (9) pass through the top rollers (12) and are wound around the outer wall of the lower winding roller (10), and the ends of the pull covers (9) are fixedly connected to the outer wall of the lower winding roller (10), and the bottom end of the annular cavity (5) is rotatably connected to a gear ring (17); Both ends of the side wall of the lower winding roller (10) are provided with an inwardly sunken groove (13), the inner side of each groove (13) is provided with a spiral spring (14), one end of each spiral spring (14) is fixedly connected to the inner side of the groove (13), and the other end of each spiral spring (14) is fixedly connected to the inner side of the annular cavity (5); A guide roller (28) for separating the sub-covers (8) is fixedly connected to the inner side of the transverse groove (38); An upper scraper (20) for scraping impurities on the sub-cover (8) is fixedly connected to the inner side of the transverse groove (38); a receiving groove (21) is provided on one side of the transverse groove (38); a lower scraper (22) for scraping impurities on the upper scraper (20) is slidably connected to the inner side of the receiving groove (21); a collecting groove (23) is provided on the other side of the transverse groove (38); a fixing ring (24) is rotatably connected to the inner side of the annular cavity (5) and located above the gear ring (17); a pull rope (25) is fixedly connected between the lower scraper (22) and the fixing ring (24); a fixing groove (26) is provided at the top of the blow molder (2) and located next to the collecting groove (23); the fixing groove (26) is communicated with the collecting groove (23); a bottom block (27) is fixedly connected to the bottom of the fixing ring (24); a top block (39) is fixedly connected to the bottom of the fixing ring (24); and the bottom block (27) and the top block (39) are symmetrically arranged.

2. A plastic film blow molding preparation system according to claim 1, characterized in that: The driving mechanism comprises a driving motor (15), the driving motor (15) being fixedly connected to the outer wall of the blow molding machine (2) and being located below the annular cavity (5), the output end of the driving motor (15) passing through the bottom of the annular cavity (5) being fixedly connected to a gear (16), the gear (16) being meshed with a gear ring (17), the top of the gear ring (17) being fixedly connected to a lower conical gear ring (18), and the outer wall of the upper winding roller (6) being fixedly connected to an upper conical gear (19) meshing with the lower conical gear ring (18).

3. A plastic film blow molding preparation system according to claim 1, characterized in that: An upper roller (29) is longitudinally rotatably connected to the inner side of the annular cavity (5), and a lower roller (34) is transversely rotatably connected to the inner side of the annular cavity (5), and the pull rope (25) passes through the outer walls of the upper roller (29) and the lower roller (34).

4. A plastic film blow molding preparation system according to claim 1, characterized in that: A return spring (30) is fixedly connected between the inner side of the receiving groove (21) and the lower scraper (22).

5. A plastic film blow molding preparation system according to claim 1, characterized in that: The bottom of the collecting groove (23) is arranged to be inclined toward one side of the fixing groove (26); a collecting box (31) is provided inside the fixing groove (26); a side wall of the collecting box (31) is provided with an opening (32); a blocking block (33) is threadedly connected to the top of the collecting box (31); and a rotating ring (37) is fixedly connected to the top of the blocking block (33).

6. A plastic film blow molding preparation system according to claim 1, characterized in that: A touch sensor (35) is provided inside the collecting tank (23).

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