A winding machine for producing plastic film

Abstract

The present invention discloses a winding machine for plastic film production, which belongs to the technical field of plastic film production. The winding machine comprises a winding roller, a continuous winding mechanism, a film winding mechanism and an automatic unwinding mechanism. The continuous winding mechanism comprises a roll-bearing frame and a rolling push plate. The film winding mechanism comprises a transverse shift plate, an alignment connecting plate and a pressure roller plate. The automatic unwinding mechanism comprises a turntable frame, an unwinding turntable and an anti-drop plate. The present invention specifically provides a winding machine for plastic film production that can effectively improve the synchronization and continuity of unwinding and winding action coordination.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic film production, in particular to a winding machine for plastic film production. Background Art

[0002] Plastic film is made of polyvinyl chloride, polyethylene, polypropylene and other resins. It is used for packaging and as a coating layer. It is widely used in food, medicine, chemical industry and other fields. It has the properties of waterproof, moisture-proof, anti-oxidation and freshness preservation. In order to facilitate storage and transportation, the plastic film needs to be wound into a cylinder by a winder after manufacturing.

[0003] When the winder is winding the plastic film, the winding paper roll needs to be replaced as the roll is completed. The existing winding machine generally has the following steps for replacing the winding paper roll: stopping the machine, unloading the winding paper roll with the completed roll, and rolling up the empty winding paper roll. In the above process, the winding action can only be performed after the unloading is completed. The synchronization and continuity of the unloading and rolling actions are poor, which affects the winding efficiency of the plastic film. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a winding machine for plastic film production, so as to at least partially solve the problems raised in the above background technology.

[0005] The present invention provides the following technical solution: A winding machine for producing plastic film proposed by the present invention comprises:

[0006] The winding roller has two sets of balancing positioning plates detachably connected at both ends;

[0007] The continuous winding mechanism comprises a winding frame and a winding push plate, wherein the winding push plate is arranged on the winding frame, and the balancing positioning plate is driven by the winding push plate to slide along the upper surface of the winding frame;

[0008] The film winding mechanism comprises a transverse shifting plate, an alignment connecting plate and a pressure roller plate, wherein a pressure roller groove is provided on the lower surface of the pressure roller plate, the alignment connecting plate is rotatably arranged on the transverse shifting plate, the alignment connecting plate is detachably connected to the balance positioning plate by being driven by the transverse shifting plate, the winding roller is configured to wind up the film with the rotation of the alignment connecting plate, and the transverse shifting plate moves relative to both ends of the winding roller;

[0009] The automatic unloading mechanism includes a turntable frame, an unloading turntable, a roll receiving frame and an anti-falling plate. The unloading turntable is rotatably arranged on the turntable frame, a release roller groove is provided on the unloading turntable, and the winding roller is rotatably arranged between the release roller groove and the pressure roller groove. The anti-falling plate is fixedly arranged on the turntable frame, an arc groove is provided on the side of the anti-falling plate close to the unloading turntable, and a limiting channel for the winding roller to slide through is provided between the arc groove and the unloading turntable.

[0010] Furthermore, a winding machine for plastic film production proposed in the present invention also includes an extrusion and cutting mechanism, which includes a mounting plate, an adjusting motor, an adjusting plate, an extrusion assembly and a cutting assembly. The mounting plate is fixedly mounted on a pressure roller plate, the adjusting motor is fixedly mounted on the mounting plate, the middle portion of the adjusting plate is fixedly connected to an output shaft of the adjusting motor, the extrusion assembly and the cutting assembly are respectively movably connected to the two ends of the adjusting plate, the extrusion assembly and the cutting assembly are both driven by the adjusting plate for position adjustment, the extrusion assembly is used to extrude bubbles generated during the winding process, and the cutting assembly is used to cut the plastic film and clamp the free end of the plastic film.

[0011] Furthermore, the continuous winding mechanism is symmetrically provided with two groups, the two groups of balance positioning plates at both ends of the winding roller are respectively slidably arranged on the two groups of winding frames, the upper ends of the winding frames are provided with limit plates on both sides, and the balance positioning plate is slidably arranged between the two groups of limit plates;

[0012] The reel is fixedly provided with a reeling motor, an output shaft of the reeling motor is fixedly provided with a first active conical wheel, the reeling frame is rotatably provided with a reeling power shaft, the reeling power shaft is fixedly provided with a first driven conical wheel, the first driven conical wheel is meshed with the first active conical wheel, the reeling frame is also provided with a reeling assembly, the reeling assembly comprises a driving shaft, a power connecting rod, a driving connecting rod and a limiting connecting rod, the driving shaft is rotatably provided on the reeling frame, one end of the power connecting rod is fixedly connected to the driving shaft, one end of the limiting connecting rod is rotatably provided on the reeling frame, The two ends of the driving connecting rod are respectively hingedly connected to the free ends of the power connecting rod and the limiting connecting rod, and at least two groups of the upper winding assembly are arranged on the winding frame, and synchronous belt disks are fixedly provided between two adjacent groups of the driving shafts, and on one group of the driving shaft and the upper winding power shaft, respectively, and a group of synchronous belts are sleeved on the two adjacent groups of the synchronous belt disks. The upper winding push plate includes a supporting plate body and a pushing plate body, and the supporting plate body is hingedly connected to the middle part of the driving connecting rod, and a plurality of pushing plate bodies are evenly arranged on the supporting plate body, and the pushing plate body is used to push the balancing positioning plate to slide along the winding frame.

[0013] Furthermore, a connecting groove is provided on the winding roller, and a connecting component is provided on the balancing positioning plate, and the connecting component includes a protruding block, a connecting pin and a handle. A connecting cavity is provided in the protruding block and the balancing positioning plate, and the connecting pin is slidably arranged in the connecting cavity, and the two ends of the connecting pin respectively pass through the two ends of the connecting cavity and extend to the outside of the connecting cavity, the handle is fixed at one end of the connecting pin and is located outside the protruding block, and the other end of the connecting pin is adapted to the connecting groove, and a baffle is fixedly provided on the part of the connecting pin sliding in the connecting cavity, and a connecting spring is sleeved on the connecting pin, and the two ends of the connecting spring are respectively fixedly connected to the inner wall of the connecting cavity and the baffle.

[0014] Furthermore, to ensure that after the winding roller and the balancing positioning plate are installed, the connecting assembly corresponds exactly to the connecting groove, one of the winding roller and the balancing positioning plate is provided with a positioning groove, and the other one is provided with a positioning protrusion, and the positioning protrusion is adapted to the positioning groove.

[0015] Furthermore, the film winding mechanism also includes a winding frame, a height adjustment cylinder and a load-bearing plate, wherein the height adjustment cylinder is fixedly arranged on the winding frame, a lifting slide bar is slidably arranged on the winding frame, the load-bearing plate is fixedly connected to the free ends of the height adjustment cylinder and the lifting slide bar, and the pressure roller plate is fixedly connected to the lower surface of the load-bearing plate;

[0016] The transmission gear of the present invention is a gear which is connected with the gear of the gear to be connected with the gear of the gear to be driven by the gear of the gear of the gear.

[0017] Furthermore, a positioning connection hole is opened on the balancing positioning plate, a positioning connection column is fixedly provided on the alignment connection plate, the positioning connection column is adapted to the positioning connection hole, and the alignment connection plate is configured to be driven by the transverse plate to drive the positioning connection column to embed into the positioning connection hole.

[0018] Furthermore, the automatic unloading mechanism further comprises an unloading conveying assembly, the unloading conveying assembly comprises a support seat, a conveying motor, a conveying screw, a conveying slide bar and a conveying seat, the conveying motor is fixedly arranged on the support seat, the conveying screw is rotatably arranged on the support seat and is connected to the output shaft of the conveying motor, the conveying slide bar is fixedly arranged on the support seat, the conveying seat is connected to the conveying screw by a thread, and the conveying seat is slidably arranged on the conveying slide bar;

[0019] The roll receiving frame is fixed on the conveying seat, and the roll receiving frame is a U-shaped frame. A group of receiving grooves are respectively opened at both ends of the roll receiving frame. The unloading turntable is symmetrically provided with two groups. The two groups of receiving grooves are respectively located below the two groups of unloading turntables. An unloading motor is fixed on the turntable frame, and the unloading turntable is connected to the output shaft of the unloading motor.

[0020] Furthermore, a lifting cylinder is fixedly provided between the conveying seat and the roll receiving rack, and the roll receiving rack is connected to the movable end of the lifting cylinder.

[0021] Furthermore, two groups of driving columns are respectively provided at both ends of the adjustment plate, and driving slide grooves are provided on the extrusion component and the cutting component, and the driving columns are slidably engaged in the driving slide grooves.

[0022] Further, the extrusion assembly includes a first guide plate, a first lifting slide plate, a connecting plate, an extrusion sleeve, an extrusion slide bar and a first mounting frame, the first guide plate is fixedly arranged on the pressure roller plate, the first lifting slide plate is slidably arranged on the first guide plate, the driving slide groove is opened at the upper end of the first lifting slide plate, the connecting plate is fixedly connected to the lower end of the first lifting slide plate, the extrusion sleeve is fixedly arranged on the connecting plate, the extrusion slide bar is slidably arranged in the extrusion sleeve, the first mounting frame is fixedly connected to the free end of the extrusion slide bar, the extrusion sleeve and the extrusion slide bar are sleeved with an extrusion spring, the two ends of the extrusion spring are respectively fixedly connected to the connecting plate and the first mounting frame, and an extrusion roller is rotatably arranged on the first mounting frame, and the extrusion roller is located above a group of roller grooves.

[0023] Furthermore, the cutting assembly includes a second guide plate, a second lifting slide plate and a second mounting frame, the second guide plate is fixedly arranged on the mounting plate, the second lifting slide plate is slidably arranged on the second guide plate, the driving slide groove is opened at the upper end of the second lifting slide plate, the second mounting frame is fixedly connected to the lower end of the second lifting slide plate, an upper clamping roller is rotatably provided on the second mounting frame, and a cutting knife is fixedly provided, a lower clamping roller is rotatably provided on the anti-fall plate, and a cutting plate is fixedly provided, the lower clamping roller and the cutting plate are respectively located directly below the upper clamping roller and the cutting knife, and a cutting groove is opened on the cutting plate.

[0024] The beneficial effects achieved by the present invention using the above structure are as follows: A winding machine for plastic film production proposed by the present invention has the following advantages:

[0025] (1) The automatic winding of the empty winding roller relative to the unwinding turntable is realized by the pushing action of the rolling push plate, and the synchronization and continuity of the automatic winding of the empty winding roller and the automatic unwinding of the winding roller after winding is completed are improved through the cooperation between the film winding mechanism, the continuous winding mechanism and the automatic unwinding mechanism, thereby improving the automation and efficiency of plastic film winding and roll changing;

[0026] (2) The position state adjustment of the extrusion component and the cutting component is realized by setting the extrusion and cutting mechanism. The bubbles are eliminated during the winding process under the action of the extrusion component, which improves the winding quality. The plastic film is cut under the action of the cutting component. At the same time, the cutting component can also stably clamp the free end of the cut plastic film, which is convenient for the leading operation of the plastic film to be wound on the next winding roller;

[0027] (3) Through the setting of the film winding mechanism, convenient installation and disassembly between the alignment connecting plate and the balance positioning plate are realized. Based on the connection relationship between the balance positioning plate and the winding roller, convenient connection and disassembly between the film winding mechanism and the winding roller are realized, and the winding action of the plastic film is completed under the action of the film winding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 The overall structure of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 2 The overall structure of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of a continuous winding mechanism according to an embodiment of the present invention;

[0032] Figure 4 for Figure 3 A partial enlarged view of part A;

[0033] Figure 5 It is a structural schematic diagram of a film winding mechanism and an automatic unwinding mechanism according to an embodiment of the present invention;

[0034] Figure 6 It is a schematic diagram of a three-dimensional cross-sectional structure in the main viewing direction of an embodiment of the present invention;

[0035] Figure 7 It is a schematic cross-sectional structure diagram of a balancing positioning plate according to an embodiment of the present invention;

[0036] Figure 8 It is a schematic diagram of a three-dimensional cross-sectional structure of a film winding mechanism according to an embodiment of the present invention when viewed from above;

[0037] Fig. 9 This is a schematic diagram of the structure inside the second driving cavity of an embodiment of the present invention;

[0038] Fig.10 It is a schematic diagram of a cross-sectional structure in the main viewing direction of an embodiment of the present invention;

[0039] Fig.11 for Fig.10 A partial enlarged view of part B;

[0040] Fig.12 It is a structural schematic diagram of a film winding mechanism according to an embodiment of the present invention;

[0041] Fig.13 for Fig.12 A partial enlarged view of part C.

[0042] Among them, 1. Winding roller, 2. Balance positioning plate, 3. Continuous winding mechanism, 4. Rolling frame, 5. Rolling push plate, 6. Limiting plate, 7. Film winding mechanism, 8. Transverse shift plate, 9. Alignment connecting plate, 10. Pressing roller plate, 11. Pressing roller groove, 12. Positioning connecting hole, 13. Positioning connecting column, 14. Automatic unloading mechanism, 15. Turntable frame, 16. Unloading turntable, 17. Unloading frame, 18. Anti-drop plate, 19. Unloading roller groove, 20. Limiting channel, 21. Extrusion cutting mechanism, 22, mounting plate, 23, adjusting motor, 24, adjusting plate, 25, winding motor, 26, first active conical wheel, 27, winding power shaft, 28, first driven conical wheel, 29, driving shaft, 30, power connecting rod, 31, driving connecting rod, 32, limiting connecting rod, 33, synchronous belt, 34, supporting plate body, 35, pushing plate body, 36, connecting groove, 37, protruding block, 38, connecting pin, 39, handle, 40, baffle, 41 , connecting spring, 42, positioning groove, 43, positioning protrusion, 44, winding frame, 45, height adjustment cylinder, 46, load-bearing plate, 47, lifting slide bar, 48, moving slide groove, 49, transverse movement motor, 50, second active conical wheel, 51, transverse movement screw, 52, second driven conical wheel, 53, transverse movement slide bar, 54, winding motor, 55, support seat, 56, conveying motor, 57, conveying screw, 58, conveying slide bar, 59, conveying seat, 60, bearing Connecting groove, 61, unloading motor, 62, lifting cylinder, 63, driving slide groove, 64, driving column, 65, first guide plate, 66, first lifting slide plate, 67, connecting plate, 68, extrusion sleeve, 69, extrusion slide bar, 70, first mounting frame, 71, extrusion spring, 72, extrusion roller, 73, second guide plate, 74, second lifting slide plate, 75, second mounting frame, 76, upper clamping roller, 77, cutting knife, 78, lower clamping roller, 79, cutting plate. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0045] This embodiment is a technical improvement made to address the technical problem of poor synchronization and continuity between the unwinding and winding actions of the existing winder for plastic film production.

[0046] See also Figure 1-Figure 4 , Figure 6 , Fig.12 and Fig.13 The present embodiment provides a winding machine for producing plastic film, comprising:

[0047] A winding roller 1, two sets of balancing positioning plates 2 are detachably connected at both ends of the winding roller 1, and a paper roll for winding up the plastic film is sleeved on the winding roller 1;

[0048] The continuous winding mechanism 3 is used to wind up the winding roller 1; the continuous winding mechanism 3 includes a winding frame 4 and a winding push plate 5, the winding push plate 5 is arranged on the winding frame 4, the balancing positioning plate 2 is driven by the winding push plate 5 to slide along the upper surface of the winding frame 4, and limiting plates 6 are arranged on both sides of the upper end of the winding frame 4. The balancing positioning plate 2 is slidingly arranged between the two groups of limiting plates 6. The sliding movement path of the balancing positioning plate 2 is limited by the setting of the limiting plates 6 to ensure that the balancing positioning plate 2 can slide along the upper surface of the winding frame 4, and the winding roller 1 is driven to move along the winding frame 4 through the sliding of the balancing positioning plate 2 to realize automatic winding of the winding roller 1;

[0049] The film winding mechanism 7 includes a transverse shifting plate 8, an alignment connecting plate 9 and a pressure roller plate 10. A pressure roller groove 11 is provided on the lower surface of the pressure roller plate 10. The transverse shifting plate 8 moves relative to the two ends of the winding roller 1. The alignment connecting plate 9 is rotatably arranged on the transverse shifting plate 8. A positioning connecting hole 12 is provided on the balancing positioning plate 2. A positioning connecting column 13 is fixedly provided on the alignment connecting plate 9. The positioning connecting column 13 is adapted to the positioning connecting hole 12. The alignment connecting plate 9 is configured to be driven by the transverse shifting plate 8 to drive the positioning connecting column 13 to be embedded in the positioning connecting hole 12. The winding roller 1 is configured to rotate with the alignment connecting plate 9 to wind up the film. As a preferred embodiment, a plurality of positioning connecting columns 13 and positioning connecting holes 12 are provided to improve the connection stability between the alignment connecting plate 9 and the balancing positioning plate 2.

[0050] The automatic unloading mechanism 14 is used to cooperate with the film winding mechanism 7 to automatically unload the winding drum after winding; the automatic unloading mechanism 14 includes a turntable frame 15, an unloading turntable 16, a roll receiving frame 17 and an anti-drop plate 18, the unloading turntable 16 is rotatably arranged on the turntable frame 15, the unloading turntable 16 is arranged on one side of the winding frame 4 and is located directly below the pressure roller plate 10, and a roller placing groove 19 is opened on the unloading turntable 16, and the roller placing groove 19 is used to place the winding roller 1, and the pressure roller groove 11 is located directly above the roller placing groove 19, the winding roller 1 is rotatably arranged between the roller placing groove 19 and the pressure roller groove 11, and the roll receiving frame 17 is arranged on the unloading turntable 16. The roll receiving frame 17 is used to receive the winding roller 1 unloaded from the unloading turntable 16. The anti-falling plate 18 is fixedly arranged on the turntable frame 15. An arc-shaped groove is provided on the side of the anti-falling plate 18 close to the unloading turntable 16. A limiting channel 20 for the winding roller 1 to slide through is provided between the arc-shaped groove and the unloading turntable 16. When the unloading turntable 16 rotates, the winding roller 1 enters the arc-shaped groove along with the unloading turntable 16, and continues to rotate along with the unloading turntable 16 under the blocking and limiting action of the limiting channel 20, until it rotates to the lowest point along with the unloading turntable 16 and falls on the roll receiving frame 17 under the action of gravity, and is received by the roll receiving frame 17.

[0051] As a preferred embodiment of the present scheme, a plurality of groups of unwinding roller grooves 19 are arranged in a circumferential array on the unwinding turntable 16, and the plurality of groups of unwinding roller grooves 19 are symmetrically arranged in pairs, and the angle between the two symmetrically arranged unwinding roller grooves 19 is 180°, one group of unwinding roller grooves 19 is used to cooperate with the continuous winding mechanism 3 to roll up the winding roller 1, and the other group of unwinding roller grooves 19 is used to unwind the winding roller 1 after the winding is completed, so as to realize the synchronization and continuity of the winding up and down of the winding roller 1, thereby improving the winding production efficiency of the plastic film;

[0052] It is worth noting that balls are installed in both the release roller groove 19 and the pressure roller groove 11. The arrangement of the balls improves the smoothness of the rotation of the winding roller 1. The arrangement of the balls is a prior art, so it is not specifically shown in this embodiment.

[0053] The extrusion and cutting mechanism 21 includes a mounting plate 22, an adjusting motor 23, an adjusting plate 24, an extrusion assembly and a cutting assembly. The mounting plate 22 is fixedly arranged on the pressure roller plate 10, and the adjusting motor 23 is fixedly arranged on the mounting plate 22. The middle part of the adjusting plate 24 is fixedly connected to the output shaft of the adjusting motor 23. The extrusion assembly and the cutting assembly are movably connected to the two ends of the adjusting plate 24 respectively. The extrusion assembly and the cutting assembly are driven by the adjusting plate 24 for position adjustment. The extrusion assembly is used to extrude bubbles between two layers of plastic film during the winding process. The cutting assembly is used to cut the plastic film and clamp the free end of the plastic film to facilitate winding.

[0054] Specifically, see Figure 3 , Figure 4 and Figure 6 In this embodiment, the continuous winding mechanism 3 is symmetrically provided with two groups, and the two groups of balancing positioning plates 2 at both ends of the winding roller 1 are respectively slidably arranged on the two groups of winding frames 4; a winding motor 25 is fixedly provided on the winding frame 4, and a first active conical wheel 26 is fixedly provided on the output shaft of the winding motor 25; a winding power shaft 27 is rotatably provided on the winding frame 4, and a first driven conical wheel 28 is fixedly provided on the winding power shaft 27, and the first driven conical wheel 28 is meshed with the first active conical wheel 26; a winding assembly is also provided on the winding frame 4, and the winding assembly includes a driving shaft 29, a power connecting rod 30, a driving connecting rod 31 and a limiting connecting rod 32, and the driving shaft 29 is rotatably provided on the winding frame 4, one end of the power connecting rod 30 is fixedly connected to the driving shaft 29, and one end of the limiting connecting rod 32 is rotatably provided On the roll-up frame 4, the two ends of the driving connecting rod 31 are hingedly connected to the free ends of the power connecting rod 30 and the limiting connecting rod 32 respectively. At least two groups of upper roll components are provided on the roll-up frame 4. Synchronous belt reels are fixedly provided between two adjacent groups of driving shafts 29, and on one group of driving shafts 29 and the upper roll power shaft 27 respectively. A group of synchronous belts 33 are sleeved on the two adjacent groups of synchronous belt reels. Under the action of the synchronous belts 33, the upper roll motor 25 can synchronously drive multiple groups of driving shafts 29. The upper roll push plate 5 includes a supporting plate body 34 and a pushing plate body 35. The supporting plate body 34 is hingedly connected to the middle part of the driving connecting rod 31. Multiple groups of pushing plate bodies 35 are evenly provided on the supporting plate body 34. The pushing plate body 35 is used to push the balancing positioning plate 2 to slide along the roll-up frame 4.

[0055] As a preferred embodiment of the present solution, a first driving cavity is provided at the upper end of the roll rack 4, and the roll-up assembly is symmetrically arranged on two opposite inner walls of the first driving cavity. The cooperation of the roll-up assembly symmetrically arranged on the two opposite inner walls of the first driving cavity further improves the driving stability of the roll-up push plate 5. It is worth noting that, in order to ensure that the movement of the roll-up assembly is not interfered with, the drive shafts 29 of the roll-up assembly arranged on the two opposite inner walls of the first driving cavity are not connected, and each group of drive shafts 29 is driven by its corresponding synchronous belt 33.

[0056] During specific use, under the action of the synchronous belt 33, the upper winding motor 25 drives multiple groups of driving shafts 29 to rotate synchronously, and the free end of the driving shaft 29 drives one end of the power connecting rod 30 to rotate therewith. Under the limiting action of the limiting connecting rod 32, the middle part of the driving connecting rod 31 moves along an elliptical path, and under the cooperation of at least two groups of driving connecting rods 31, the upper winding push plate 5 is driven to move forward synchronously during the upward movement. The upper winding push plate 5 pushes the balancing positioning plate 2 to move during the upward and forward movement. Under the pushing action of the upper winding push plate 5, a group of balancing positioning plates 2 closest to the unloading turntable 16 is pushed down from the winding frame 4 and falls into the roller placing groove 19 under the action of gravity. At the same time, it is automatically adjusted to a state where its horizontal side is parallel to the ground through the balancing positioning plate 2, waiting for connection with the positioning connecting plate 9.

[0057] It is worth noting that, in the present embodiment, the balancing and positioning plate 2 is a cubic plate, and may also be a polygonal plate such as a hexagonal plate.

[0058] Specifically, see Figure 6 and Figure 7 In this embodiment, a connecting groove 36 is provided on the winding roller 1, and a connecting assembly is provided on the balancing positioning plate 2. The connecting assembly includes a protruding block 37, a connecting pin 38 and a handle 39. The protruding block 37 and the balancing positioning plate 2 are connected to form a connecting cavity. The connecting pin 38 is slidably arranged in the connecting cavity, and the two ends of the connecting pin 38 respectively pass through the two ends of the connecting cavity and extend to the outside of the connecting cavity. The handle 39 is fixedly arranged at one end of the connecting pin 38 and is located outside the protruding block 37. The other end of the connecting pin 38 is adapted to the connecting groove 36, and the connecting pin 38 slides in A baffle 40 is fixedly provided on the part inside the connecting cavity, and a connecting spring 41 is sleeved on the connecting pin 38. The two ends of the connecting spring 41 are respectively fixedly connected to the inner wall of the connecting cavity and the baffle 40. When no force is applied to the handle 39, force is applied to the baffle 40 under the action of the connecting spring 41, and the baffle 40 drives the connecting pin 38 to be embedded in the connecting groove 36, so that a fixed connection between the balancing positioning plate 2 and the winding roller 1 can be achieved. Through the design of the above structure, it is easy to disassemble the lower balancing positioning plate 2, thereby facilitating the installation and disassembly of the paper tube.

[0059] Specifically, see Figure 1 and Figure 7 In the present embodiment, in order to ensure that the connection component corresponds exactly to the connection groove 36 after the winding roller 1 and the balancing positioning plate 2 are installed, one of the winding roller 1 and the balancing positioning plate 2 is provided with a positioning groove 42, and the other one is provided with a positioning protrusion 43, and the positioning protrusion 43 is adapted to the positioning groove 42. When the balancing positioning plate 2 is installed on the winding roller 1, the positioning protrusion 43 is engaged with the positioning groove 42. The positioning installation between the winding roller 1 and the balancing positioning plate 2 can be achieved through the cooperation of the positioning protrusion 43 and the positioning groove 42, and it is ensured that the connection component corresponds exactly to the connection groove 36 after the installation is completed.

[0060] Specifically, see Figure 5 In this embodiment, the film winding mechanism 7 also includes a winding frame 44, a height adjustment cylinder 45 and a load-bearing plate 46. The height adjustment cylinder 45 is fixedly arranged on the winding frame 44. A lifting slide bar 47 is slidably arranged on the winding frame 44. The load-bearing plate 46 is fixedly connected to the free ends of the height adjustment cylinder 45 and the lifting slide bar 47. The pressure roller plate 10 is fixedly connected to the lower surface of the load-bearing plate 46. The height of the load-bearing plate 46 is adjusted under the drive of the height adjustment cylinder 45 and the guiding sliding action of the lifting slide bar 47. When the load-bearing plate 46 descends, the pressure roller plate 10 can be driven to descend with it. The pressure roller plate 10 cooperates with the unloading turntable 16 to limit the position of the winding roller 1.

[0061] Specifically, see Figure 5 , Figure 8 , Fig. 9 and Fig.12 In this embodiment, a second driving cavity is provided in the load-bearing plate 46, and two groups of movable slide grooves 48 are symmetrically opened at the two ends of the lower part of the second driving cavity. A transverse motor 49 is fixedly provided on the load-bearing plate 46, and a second active conical wheel 50 is fixedly provided on the output shaft of the transverse motor 49. A transverse screw 51 is rotatably provided between the two opposite inner walls of the second driving cavity, and the two ends of the transverse screw 51 are provided with external threads with opposite thread directions. A second driven conical wheel 52 is fixedly provided in the middle of the transverse screw 51, and the second driven conical wheel 52 is meshed with the second active conical wheel 50. A transverse slide rod 53 is fixedly provided between the two opposite inner walls of the second driving cavity, and two groups of transverse plates 8 are provided at the two ends of the transverse screw 51 through threaded connection. The two groups of transverse plates 8 are respectively slidably provided at the two ends of the transverse slide rod 53, and the lower end of the transverse plate 8 penetrates and slides in the movable slide groove 48 The two groups of transverse plates 8 can be moved laterally under the driving of the transverse screw 51 and the guiding action of the transverse slide bar 53. When the height adjustment cylinder 45 adjusts the transverse plate 8 to the height position corresponding to the balancing positioning plate 2, the lateral movement of the transverse plate 8 can drive the positioning connecting column 13 to be embedded in the positioning connecting hole 12 to realize the connection between the transverse plate 8 and the balancing positioning plate 2. A winding motor 54 is fixedly provided on one group of transverse plates 8. The output shaft of the winding motor 54 is connected to the rotating alignment connecting plate 9 on the group of transverse plates 8. Under the action of the winding motor 54, the winding roller 1 can be driven to rotate, thereby realizing the winding action of the plastic film. Two groups of pressure roller plates 10 are provided corresponding to the transverse plates 8. The two groups of pressure roller plates 10 are respectively located on the inner sides of the two groups of transverse plates 8, and the two groups of pressure roller plates 10 respectively limit the two ends of the winding roller 1.

[0062] Specifically, see Figure 1 , Figure 2 and Figure 5In this embodiment, the automatic unloading mechanism 14 also includes an unloading conveying assembly, which includes a support seat 55, a conveying motor 56, a conveying screw 57, a conveying slide 58 and a conveying seat 59. The conveying motor 56 is fixedly arranged on the support seat 55, the conveying screw 57 is rotatably arranged on the support seat 55 and is connected to the output shaft of the conveying motor 56, the conveying slide 58 is fixedly arranged on the support seat 55, the conveying seat 59 is connected to the conveying screw 57 by a thread, and the conveying seat 59 is slidably arranged on the conveying slide 58. Under the driving action of the conveying screw 57 and the guiding action of the conveying slide 58, the conveying seat 59 moves below the unloading turntable 16;

[0063] The unwinding frame 17 is fixedly mounted on the conveying seat 59. The unwinding frame 17 is a U-shaped frame. A group of receiving grooves 60 are respectively opened at both ends of the unwinding frame 17. Two groups of unwinding turntables 16 are symmetrically provided. The two groups of receiving grooves 60 are respectively located below the two groups of unwinding turntables 16. An unwinding motor 61 is fixedly mounted on the turntable frame 15. The unwinding turntable 16 is connected to the output shaft of the unwinding motor 61. The unwinding turntable 16 is driven to rotate under the action of the unwinding motor 61. As the unwinding turntable 16 rotates, the unwinding action of the winding roller 1 is completed.

[0064] Specifically, see Figure 5 In this embodiment, a lifting cylinder 62 is fixedly provided between the conveying seat 59 and the roll receiving frame 17, and the roll receiving frame 17 is connected to the movable end of the lifting cylinder 62. Under the action of the lifting cylinder 62, the height of the roll receiving frame 17 relative to the unloading turntable 16 can be adjusted, which can reduce the height of the winding roller 1 when it falls during unloading, reduce the force of the winding roller 1 on the connecting roll frame 17, and ensure that the winding roller 1 can move smoothly with the drive of the unloading conveying component.

[0065] Specifically, see Fig.10 , Fig.11 , Fig.12 and Fig.13 In this embodiment, two groups of driving columns 64 are respectively provided at both ends of the adjustment plate 24, and driving grooves 63 are provided on the extrusion assembly and the cutting assembly. The driving columns 64 are slidably arranged in the driving grooves 63, and the height position of the driving columns 64 is adjusted by rotating and swinging the adjustment plate 24. The height of the extrusion assembly and the cutting assembly is adjusted under the cooperation of the driving columns 64 and the driving grooves 63. Specifically, when the extrusion assembly falls, the cutting assembly is lifted up, and at this time, the extrusion assembly cooperates with the winding roller 1 to perform the function of winding, squeezing and removing bubbles; when the cutting assembly falls, the extrusion assembly is lifted up, and at this time, the cutting assembly cuts the plastic film and clamps the free end of the plastic film.

[0066] Specifically, see Fig.10 , Fig.11 , Fig.12 and Fig.13In this embodiment, the extrusion assembly includes a first guide plate 65, a first lifting slide plate 66, a connecting plate 67, an extrusion sleeve 68, an extrusion slide bar 69 and a first mounting frame 70. The first guide plate 65 is fixedly arranged on the pressure roller plate 10, the first lifting slide plate 66 is slidably arranged on the first guide plate 65, the driving slide groove 63 is opened at the upper end of the first lifting slide plate 66, the connecting plate 67 is fixedly connected to the lower end of the first lifting slide plate 66, the connecting plate 67 is located below the first guide plate 65, the extrusion sleeve 68 is fixedly arranged on the connecting plate 67, the extrusion slide bar 69 is slidably arranged in the extrusion sleeve 68, and the first mounting frame 70 is connected to the extrusion slide bar 69. 9 is fixedly connected, and an extrusion spring 71 is sleeved on the extrusion sleeve 68 and the extrusion slide rod 69. The two ends of the extrusion spring 71 are respectively fixedly connected to the connecting plate 67 and the first mounting frame 70. An extrusion roller 72 is rotatably provided on the first mounting frame 70. The extrusion roller 72 is located above a group of roller grooves 19. The plastic film passes from under the extrusion roller 72 and is wound on the paper tube of the winding roller 1. Under the action of the extrusion roller 72, the plastic film is squeezed to squeeze out the bubbles generated during the winding process, so that the plastic films are more fit to each other during the winding process, and the setting of the extrusion spring 71 can adapt to different winding diameters.

[0067] Specifically, see Fig.10 , Fig.11 , Fig.12 and Fig.13 In this embodiment, the cutting assembly includes a second guide plate 73, a second lifting slide plate 74 and a second mounting frame 75. The second guide plate 73 is fixedly arranged on the mounting plate 22, the second lifting slide plate 74 is slidably arranged on the second guide plate 73, the driving slide groove 63 is opened at the upper end of the second lifting slide plate 74, the second mounting frame 75 is fixedly connected to the lower end of the second lifting slide plate 74, the second mounting frame 75 is located below the second guide plate 73, an upper clamping roller 76 is rotatably arranged on the second mounting frame 75, and a cutting knife 77 is fixedly arranged, and the anti-drop plate 1 8 is rotatably provided with a lower clamping roller 78, and a cutting plate 79 is fixedly provided. The lower clamping roller 78 and the cutting plate 79 are respectively located directly below the upper clamping roller 76 and the cutting knife 77. A cutting groove is opened on the cutting plate 79. The plastic film passes from the bottom of the lower clamping roller 78 and is wound on the winding roller 1. After the winding reaches a set length, the cutting knife 77 and the upper clamping roller 76 fall synchronously. The upper clamping roller 76 cooperates with the lower clamping roller 78 to clamp and fix the free end of the plastic film, and the cutting knife 77 cooperates with the cutting plate 79 to cut the plastic film.

[0068] The working principle of a plastic film production winder provided in this embodiment is as follows:

[0069] (1) First, put the empty paper tube on the winding roller 1;

[0070] Pull the handle 39 outward, the handle 39 drives the connecting pin 38 to slide along the connecting cavity, and the free end of the connecting pin 38 slides into the connecting cavity. At this time, the connecting spring 41 is in a compressed state;

[0071] Through the cooperation of the positioning groove 42 and the positioning protrusion 43, the balancing positioning plate 2 is positioned and installed at the two ends of the winding roller 1, and then the handle 39 is released, and the baffle 40 is forced under the action of the connecting spring 41, and the baffle 40 drives the connecting pin 38 to be embedded in the connecting groove 36, so that the balancing positioning plate 2 and the winding roller 1 are stably connected;

[0072] (2) The winding roller 1 equipped with the balancing positioning plate 2 is placed on the winding frame 4, and the two sets of balancing positioning plates 2 at both ends of the winding roller 1 are respectively placed on the two sets of winding frames 4, and the balancing positioning plates 2 are located on the inner side of the limiting plate 6;

[0073] (3) The winding motor 25 is started, and the winding motor 25 drives the first active conical wheel 26 to rotate. Under the meshing action of the first active conical wheel 26 and the first driven conical wheel 28, the winding power shaft 27 is driven to rotate. Through the transmission of the synchronous belt 33, the winding power shaft 27 drives the driving shaft 29 to rotate. The driving shaft 29 drives one end of the power connecting rod 30 to rotate synchronously with it. The power connecting rod 30 drives one end of the driving connecting rod 31 to rotate synchronously with it. At the same time, under the limiting action of the limiting connecting rod 32, the driving connecting rod 31 pushes the free end of the limiting connecting rod 32 to swing in a fan shape. In this process, the driving connecting rod 31 is connected to the power connecting rod 30. One end of the drive shaft 29 rotates in a circle with the drive shaft 29 as the center, and the end of the driving connecting rod 31 connected to the limit connecting rod 32 swings in a fan shape, and the middle part of the driving connecting rod 31 moves in an elliptical path, and the middle part of the driving connecting rod 31 drives the supporting plate 34 to move forward while rising, and pull back while falling. During the process of the supporting plate 34 rising and moving forward, the plate 35 is pushed to act on the balancing positioning plate 2, so that the multiple groups of winding rollers 1 are pushed to slide forward along the winding frame 4, and the frontmost group of winding rollers 1 fall into the uppermost group of roller grooves 19 under the action of gravity when they are separated from the winding frame 4, so that the winding rollers 1 are automatically put on;

[0074] (4) Start the height adjustment cylinder 45. Driven by the height adjustment cylinder 45 and guided by the lifting slide rod 47, the load-bearing plate 46 moves downward. The load-bearing plate 46 drives the traverse plate 8 and the pressure roller plate 10 to move downward. When the pressure roller groove 11 of the pressure roller plate 10 contacts the upper surface of the winding roller 1, the positioning connection column 13 of the alignment connection plate 9 is exactly on the same horizontal plane as the positioning connection hole 12 on the balance positioning plate 2.

[0075] The transverse motor 49 is started, and the transverse motor 49 drives the second active conical wheel 50 to rotate, and the meshing of the second active conical wheel 50 and the second driven conical wheel 52 drives the transverse screw 51 to rotate, and the transverse plate 8 is driven to move along the moving slide groove 48 under the driving of the transverse screw 51 and the guiding action of the transverse slide rod 53, and the transverse plate 8 drives the positioning connection column 13 of the alignment connection plate 9 to be embedded in the positioning connection hole 12 on the balance positioning plate 2, so as to realize the connection between the positioning connection plate 67 and the winding roller 1;

[0076] (5) The plastic film passes through the upper clamping roller 76 and the lower clamping roller 78 and is led to the winding roller 1 rotating in the unwinding roller groove 19 and the pressure roller groove 11;

[0077] The adjusting motor 23 drives the adjusting plate 24 to rotate, and the end of the adjusting plate 24 connected to the extrusion component moves downward, and the end connected to the cutting component moves upward;

[0078] When the adjusting plate 24 rotates, the driving column 64 slides along the driving slide groove 63 to drive the first lifting slide plate 66 and the second lifting slide plate 74 to perform corresponding lifting actions along the first guide plate 65 and the second guide plate 73 respectively;

[0079] The first lifting slide plate 66 drives the squeezing roller 72 to move downward under the action of the adjusting plate 24, and the squeezing roller 72 contacts the plastic film above the winding roller 1 to squeeze the plastic film to remove bubbles, and as the winding diameter increases, the squeezing spring 71 is compressed to match the diameter. At this time, due to the upward movement of the second lifting slide plate 74, the upper clamping roller 76 and the cutting knife 77 are respectively away from the lower clamping roller 78 and the cutting plate 79;

[0080] (6) The winding motor 54 drives the winding roller 1 connected thereto to rotate, thereby realizing the winding action of the plastic film; after the winding is completed, the adjusting motor 23 drives the adjusting plate 24 to rotate in the opposite direction, and the end of the adjusting plate 24 connected to the cutting assembly moves downward, and the end connected to the extrusion assembly moves upward, and the plastic film is cut under the cooperation of the cutting knife 77 and the cutting plate 79, and at the same time, the upper clamping roller 76 and the lower clamping roller 78 cooperate to clamp the plastic film;

[0081] (7) The connection between the alignment connecting plate 9 and the balance positioning plate 2 is released under the cooperation of the traverse motor 49 and the height adjustment cylinder 45; the unloading motor 61 is started, and the unloading turntable 16 is driven to rotate. Under the limiting and guiding action of the anti-drop plate 18, the winding roller 1 with the plastic film rolled up slides along the limiting channel 20 until it moves to the bottom. Under the action of gravity, the winding roller 1 falls into the receiving groove 60 of the roll receiving frame 17;

[0082] (8) The retracting action of the lifting cylinder 62 drives the take-up frame 17 downward until the height of the take-up roller 1 on which the plastic film is wound is lower than the lower edge of the anti-fall plate 18. The conveying screw 57 is driven to rotate by the conveying motor 56, and the conveying seat 59 is driven to move through the guiding cooperation of the conveying slide bar 58. The conveying seat 59 drives the take-up frame 17 and the plastic film thereon to move out from under the unloading turntable 16. After the take-up roller 1 is manually removed, the conveying seat 59 drives the take-up frame 17 to return to the position below the unloading turntable 16, and drives the take-up frame 17 to prepare for the next take-up action under the extending action of the lifting cylinder 62.

[0083] In actual production, in order to prevent the plastic film rolled up on the winding roller 1 from falling apart when the winding roller 1 falls along the limiting channel 20, the edge of the plastic film on the winding roller 1 can be glued and fixed.

[0084] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A winding machine for plastic film production, characterized in that: include: The winding roller (1) has two sets of balancing positioning plates (2) detachably connected at both ends; The continuous winding mechanism (3) comprises a winding frame (4) and a winding push plate (5), wherein the winding push plate (5) is arranged on the winding frame (4), and the balancing positioning plate (2) is driven by the winding push plate (5) to slide along the upper surface of the winding frame (4); The continuous winding mechanism (3) is symmetrically provided with two groups, the two groups of balancing positioning plates (2) at both ends of the winding roller (1) are respectively slidably arranged on the two groups of winding frames (4), the upper ends of the winding frames (4) are provided with limit plates (6) on both sides, and the balancing positioning plate (2) is slidably arranged between the two groups of limit plates (6); A film winding mechanism (7) comprises a transverse shift plate (8), an alignment connecting plate (9) and a pressure roller plate (10), wherein a pressure roller groove (11) is provided on the lower surface of the pressure roller plate (10), the alignment connecting plate (9) is rotatably arranged on the transverse shift plate (8), the alignment connecting plate (9) is driven by the transverse shift plate (8) and is detachably connected to the balance positioning plate (2), and the winding roller (1) is configured to rotate with the alignment connecting plate (9) to wind up the film; The automatic unloading mechanism (14) comprises a turntable frame (15), an unloading turntable (16) and an anti-drop plate (18), wherein the unloading turntable (16) is rotatably arranged on the turntable frame (15), a release roller groove (19) is provided on the unloading turntable (16), the winding roller (1) is rotatably arranged between the release roller groove (19) and the pressure roller groove (11), the anti-drop plate (18) is fixedly arranged on the turntable frame (15), an arc groove is provided on a side of the anti-drop plate (18) close to the unloading turntable (16), and a limiting channel (20) for the winding roller (1) to slide through is provided between the arc groove and the unloading turntable (16); An extrusion and cutting mechanism (21), the extrusion and cutting mechanism (21) comprising a mounting plate (22), an adjusting motor (23), an adjusting plate (24), an extrusion assembly and a cutting assembly, the mounting plate (22) being fixedly mounted on a pressure roller plate (10), the adjusting motor (23) being fixedly mounted on the mounting plate (22), the middle portion of the adjusting plate (24) being fixedly connected to an output shaft of the adjusting motor (23), the extrusion assembly and the cutting assembly being movably connected to two ends of the adjusting plate (24), the extrusion assembly and the cutting assembly being driven by the adjusting plate (24) to adjust their positions, the extrusion assembly being used to extrude bubbles generated during the winding process, and the cutting assembly being used to cut the plastic film and clamp the free end of the plastic film; Two sets of driving columns (64) are respectively provided at both ends of the adjustment plate (24); driving slide grooves (63) are provided on the extrusion assembly and the cutting assembly; and the driving columns (64) are slidably engaged in the driving slide grooves (63); The extrusion assembly comprises a first guide plate (65), a first lifting slide plate (66), a connecting plate (67), an extrusion sleeve (68), an extrusion slide rod (69) and a first mounting frame (70), wherein the first guide plate (65) is fixedly arranged on the pressure roller plate (10), the first lifting slide plate (66) is slidably arranged on the first guide plate (65), the driving slide groove (63) is opened at the upper end of the first lifting slide plate (66), the connecting plate (67) is fixedly connected to the lower end of the first lifting slide plate (66), and the extrusion sleeve (68) is fixedly arranged on the first guide plate (65). The extrusion slide bar (69) is arranged on the connecting plate (67), the extrusion slide bar (69) is slidably arranged in the extrusion sleeve (68), the first mounting frame (70) is fixedly connected to the free end of the extrusion slide bar (69), the extrusion sleeve (68) and the extrusion slide bar (69) are sleeved with an extrusion spring (71), the two ends of the extrusion spring (71) are respectively fixedly connected to the connecting plate (67) and the first mounting frame (70), and the first mounting frame (70) is rotatably provided with an extrusion roller (72), and the extrusion roller (72) is located above a group of roller grooves (19); The cutting assembly comprises a second guide plate (73), a second lifting slide plate (74) and a second mounting frame (75); the second guide plate (73) is fixedly mounted on the mounting plate (22); the second lifting slide plate (74) is slidably mounted on the second guide plate (73); the driving slide groove (63) is arranged at the upper end of the second lifting slide plate (74); the second mounting frame (75) is fixedly connected to the lower end of the second lifting slide plate (74); an upper clamping roller (76) is rotatably mounted on the second mounting frame (75) and a cutting knife (77) is fixedly mounted thereon; a lower clamping roller (78) is rotatably mounted on the anti-fall plate (18) and a cutting plate (79) is fixedly mounted thereon; the lower clamping roller (78) and the cutting plate (79) are respectively located directly below the upper clamping roller (76) and the cutting knife (77); and a cutting groove is arranged on the cutting plate (79).

2. The plastic film production winder according to claim 1, characterized in that: The reel frame (4) is fixedly provided with a reeling motor (25), an output shaft of the reeling motor (25) is fixedly provided with a first active conical wheel (26), a reeling power shaft (27) is rotatably provided on the reel frame (4), a first driven conical wheel (28) is fixedly provided on the reeling power shaft (27), the first driven conical wheel (28) is meshed with the first active conical wheel (26), and a reeling assembly is also provided on the reel frame (4), the reeling assembly comprises a drive shaft (29), a power connecting rod (30), a drive connecting rod (31) and a limit connecting rod (32), the drive shaft (29) is rotatably provided on the reel frame (4), one end of the power connecting rod (30) is fixedly connected to the drive shaft (29), and one end of the limit connecting rod (32) is rotatably provided on the reel frame ( 4), the two ends of the driving connecting rod (31) are respectively hingedly connected to the free ends of the power connecting rod (30) and the limiting connecting rod (32), the upper winding assembly is provided with at least two groups on the winding frame (4), synchronous belt reels are respectively fixedly provided between two adjacent groups of the driving shafts (29) and on one group of the driving shafts (29) and the upper winding power shaft (27), and a group of synchronous belts (33) are sleeved on the two adjacent groups of the synchronous belt reels, the upper winding push plate (5) comprises a supporting plate body (34) and a pushing plate body (35), the supporting plate body (34) is hingedly connected to the middle part of the driving connecting rod (31), and a plurality of pushing plate bodies (35) are evenly provided on the supporting plate body (34), and the pushing plate body (35) is used to push the balancing positioning plate (2) to slide along the winding frame (4).

3. The winding machine for producing plastic film according to claim 1, characterized in that: The winding roller (1) is provided with a connecting groove (36), the balancing positioning plate (2) is provided with a connecting assembly, the connecting assembly comprises a protruding block (37), a connecting pin (38) and a handle (39), a connecting cavity is provided in the protruding block (37) and the balancing positioning plate (2), the connecting pin (38) is slidably arranged in the connecting cavity, and the two ends of the connecting pin (38) respectively pass through the two ends of the connecting cavity and extend to the outside of the connecting cavity, the handle (39) is fixedly arranged at one end of the connecting pin (38) and is located outside the protruding block (37), the other end of the connecting pin (38) is adapted to the connecting groove (36), a baffle (40) is fixedly arranged on the part of the connecting pin (38) sliding in the connecting cavity, a connecting spring (41) is sleeved on the connecting pin (38), and the two ends of the connecting spring (41) are respectively fixedly connected to the inner wall of the connecting cavity and the baffle (40); One of the winding roller (1) and the balancing positioning plate (2) is provided with a positioning groove (42), and the other of the winding roller (1) and the balancing positioning plate (2) is provided with a positioning protrusion (43), wherein the positioning protrusion (43) is adapted to fit the positioning groove (42).

4. The winding machine for producing plastic film according to claim 1, characterized in that: The film winding mechanism (7) further comprises a winding frame (44), a height adjustment cylinder (45) and a load-bearing plate (46); the height adjustment cylinder (45) is fixedly mounted on the winding frame (44); a lifting slide bar (47) is slidably mounted on the winding frame (44); the load-bearing plate (46) is fixedly connected to the free ends of the height adjustment cylinder (45) and the lifting slide bar (47); and the pressure roller plate (10) is fixedly connected to the lower surface of the load-bearing plate (46); A second driving cavity is provided in the load-bearing plate (46), and two groups of movable slide grooves (48) are symmetrically provided at both ends of the lower part of the second driving cavity. A transverse motor (49) is fixedly provided on the load-bearing plate (46), and a second active conical wheel (50) is fixedly provided on the output shaft of the transverse motor (49). A transverse screw (51) is rotatably provided between two opposite inner walls of the second driving cavity, and external threads with opposite thread directions are provided at both ends of the transverse screw (51). A second driven conical wheel (52) is fixedly provided in the middle part of the transverse screw (51), and the second driven conical wheel (52) meshes with the second active conical wheel (50). The second driving cavity A transverse sliding rod (53) is fixedly provided between two opposite inner walls, and two groups of the transverse sliding plates (8) are provided at both ends of the transverse sliding rod (51) through threaded connection. The two groups of the transverse sliding plates (8) are respectively slidably provided at the two ends of the transverse sliding rod (53), and the lower end of the transverse sliding plate (8) is slidably provided in the movable sliding groove (48). A winding motor (54) is fixedly provided on one group of the transverse sliding plates (8), and the output shaft of the winding motor (54) is connected to the rotatable alignment connecting plate (9) on the group of transverse sliding plates (8). Two groups of the pressure roller plates (10) are provided corresponding to the transverse sliding plates (8), and the two groups of the pressure roller plates (10) are respectively located on the inner sides of the two groups of transverse sliding plates (8); The balancing positioning plate (2) is provided with a positioning connection hole (12), the alignment connection plate (9) is fixedly provided with a positioning connection column (13), the positioning connection column (13) is adapted to the positioning connection hole (12), and the alignment connection plate (9) is configured to be driven by the transverse plate (8) to drive the positioning connection column (13) to be embedded in the positioning connection hole (12).

5. The winding machine for producing plastic film according to claim 1, characterized in that: The automatic unloading mechanism (14) further comprises an unloading conveying assembly, the unloading conveying assembly comprising a support seat (55), a conveying motor (56), a conveying screw (57), a conveying slide bar (58) and a conveying seat (59), the conveying motor (56) being fixedly mounted on the support seat (55), the conveying screw (57) being rotatably mounted on the support seat (55) and being connected to an output shaft of the conveying motor (56), the conveying slide bar (58) being fixedly mounted on the support seat (55), the conveying seat (59) being connected to the conveying screw (57) by means of a thread, and the conveying seat (59) being slidably mounted on the conveying slide bar (58); A roll receiving frame (17) is fixedly provided on the conveying seat (59), the roll receiving frame (17) is located below the roll unloading turntable (16), the roll receiving frame (17) is a U-shaped frame, a group of receiving grooves (60) are respectively opened at both ends of the roll receiving frame (17), the roll unloading turntable (16) is symmetrically provided with two groups of receiving grooves (60), the two groups of receiving grooves (60) are respectively located below the two groups of roll unloading turntables (16), and a roll unloading motor (61) is fixedly provided on the turntable frame (15), and the roll unloading turntable (16) is connected to the output shaft of the roll unloading motor (61).

6. The winding machine for producing plastic film according to claim 5, characterized in that: A lifting cylinder (62) is fixedly provided between the conveying seat (59) and the roll receiving rack (17), and the roll receiving rack (17) is connected to the movable end of the lifting cylinder (62).

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