A traction structure and traction method of a film blowing machine

Abstract

The present invention discloses a traction structure and traction method of a film blowing machine, which relates to the technical field of film blowing machines, and includes a mounting seat, on which a feed guide roller and a discharge guide roller are rotatably mounted; a traction drive mechanism, which is arranged on the mounting seat and located between the feed guide roller and the discharge guide roller; and a film processing mechanism, which is arranged on the mounting seat and located between the feed guide roller and the traction drive mechanism, and the film processing mechanism includes two transmission components symmetrically arranged up and down. The present invention softly clamps the film through four operating members, and operates the operating members to move the lateral part of the winding tape that is in contact with the film to the same side, and as the film continues to be transmitted, the lateral position of the subsequent film is adjusted to complete the deviation correction of the film, and no manual intervention is required, which reduces the workload of the operators and brings convenience to the work.

Description

Technical Field

[0001] The invention relates to the technical field of film blowing machines, and in particular to a traction structure and a traction method of a film blowing machine. Background Art

[0002] The film blowing machine is an automated equipment for film production. It mainly heats and melts plastic particles and then blows them into film. The process consists of the molten plastic being filtered through the machine head to remove impurities and then coming out from the die head. It is cooled by air circulation, inflated, and passed through the herringbone plate, traction roller, and winding to roll the finished film into a tube. It is suitable for blowing low-density polyethylene, high-density polyethylene, and linear low-density plastic films, and is widely used in the inner and outer packaging of civil and industrial products such as fruits, food, clothing, textiles, fungus cultivation, and daily necessities.

[0003] The traction structure is an important part of the film blowing machine, which is responsible for pulling the extruded film to the winder for winding. When the film is pulled, some problems will occur in the film, such as the position of the film will be offset, or the film will be wrinkled. These problems need to be solved by manual intervention to restore the film to a qualified state. The existing traction structure cannot solve the problem of film position offset and wrinkles, which brings inconvenience to the operators. Summary of the invention

[0004] The object of the present invention is to provide a traction structure and a traction method for a film blowing machine, which solves the problem that the existing traction structure cannot solve the position deviation and wrinkles of the film, causing inconvenience to operators.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The first aspect of the present invention provides a traction structure of a film blowing machine, comprising:

[0007] A mounting seat, on which a feed guide roller and a discharge guide roller are rotatably mounted;

[0008] A traction drive mechanism, wherein the traction drive mechanism is disposed on a mounting seat and is located between a feed guide roller and a discharge guide roller;

[0009] A film handling mechanism, the film handling mechanism is arranged on the mounting seat and is located between the feed guide roller and the traction drive mechanism, the film handling mechanism includes two transmission components symmetrically arranged up and down, the transmission component includes a U-shaped frame, a first electric push rod is installed on the U-shaped frame, and two operating members are installed on the telescopic end of the first electric push rod through a bracket. The cooperation of the four operating members can move the film axially along the feed guide roller to achieve the position adjustment of the film;

[0010] Four clamping mechanisms are respectively arranged on four operating members, and the four clamping mechanisms are symmetrically arranged in pairs, for softly clamping the two side edges of the film. When the operating members on both sides respectively stretch the two side edges of the film outwards, wrinkles of the film can be eliminated.

[0011] Preferably, the traction drive mechanism includes two vertically symmetrically arranged transmission rollers, and the two transmission rollers are rotatably mounted on a mounting seat, a first motor for driving one of the transmission rollers to rotate is fixed on one side of the mounting seat, gears are fixed at one end of the two transmission rollers, and the two gears are meshingly connected.

[0012] Preferably, the operating member comprises a mounting shell fixed to the bracket, two rotating rollers are rotatably mounted in the mounting shell, a winding belt is provided for common transmission of the two rotating rollers, and a second motor driving one of the rotating rollers is fixed on the mounting shell.

[0013] Preferably, the clamping mechanism includes a mounting plate installed on a mounting shell, and the mounting plate is located in the inner circle of the winding belt, a movable plate is provided on the side of the mounting plate close to the film, a linear drive and a telescopic rod are provided between the movable plate and the mounting plate, and a plurality of long wheels are rotatably installed on the side of the movable plate close to the film.

[0014] Preferably, the mounting plate is laterally slidably installed on the mounting shell, and long grooves are provided on both sides of the mounting shell. Sliding rods fixed to the mounting shell are provided on the outer sides of the two long grooves, and sliding sleeves are slidably provided on the two sliding rods. The two sides of the mounting plate are respectively fixedly connected to the two sliding sleeves, and the two sliding sleeves are screwed with bolts that tighten the sliding rods.

[0015] Preferably, limiting mechanisms are provided on both sides of the clamping mechanism of the transmission assembly on the upper side, and the limiting mechanism includes a mounting vertical plate fixed to the sliding sleeve, and the mounting vertical plate is rotatably installed with two flip rods through a rotating shaft, and the outer ends of the two flip rods are hinged to the limiting vertical rod together, and a torsion spring is sleeved on the rotating shaft, and the torsion spring applies an upward force to the limiting vertical rod, and a support rod is fixed on the movable plate, and the support rod is vertically corresponding to the end of the flip rod away from the limiting vertical rod.

[0016] Preferably, the linear actuator is a vertically telescopic airbag, and the airbag is connected to an external air pump through an air pipe.

[0017] Preferably, the linear drive is a second electric push rod, and the telescopic end of the second electric push rod is fixedly connected to the moving plate.

[0018] The second invention of the present invention provides a traction method of the traction structure of the above film blowing machine, which performs a deviation correction operation on the film, comprising the following steps:

[0019] Step 1: Pull the film toward one side of the discharge guide roller through the traction drive mechanism to achieve traction transmission of the film;

[0020] Step 2: Extend the telescopic ends of the two first electric push rods so that the winding belts of the two transmission components can softly clamp the film;

[0021] Step 3: operate four operating members simultaneously to move the transverse portion of the winding tape in contact with the film to the same side, thereby pulling the film to one side, and adjusting the transverse position of the subsequent film as the film continues to be transported;

[0022] Step 4: After the film position deviation correction is completed, the operating member is stopped and the first electric push rod is retracted.

[0023] The third aspect of the present invention provides a traction method of the traction structure of the above film blowing machine, which performs wrinkle elimination operation on the film, comprising the following steps:

[0024] Step 1: Pull the film toward one side of the discharge guide roller through the traction drive mechanism to achieve traction transmission of the film;

[0025] Step 2: Extend the movable plate to one side of the film through the linear drive, and the long wheel squeezes the corresponding part of the winding belt to bulge, and the corresponding bulges of the winding belt on both sides softly clamp the two sides of the film respectively;

[0026] Step 3: Run four operating parts at the same time to move the transverse parts of the winding belts that are in contact with the film on both sides to the set sizes respectively, so as to tighten the film transversely, and eliminate the wrinkles of the subsequent film as the film continues to be transported;

[0027] Step 4: After the wrinkles of the film are eliminated, the long wheel is restored to its original position by the linear drive to release the soft clamping of the film.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] The present invention softly clamps the film through four operating members, and operates the operating members to move the lateral part of the winding belt in contact with the film to the same side, and adjusts the lateral position of the subsequent film as the film continues to be transmitted, so as to complete the deviation correction of the film, and no manual intervention is required, thereby reducing the workload of the operators and bringing convenience to the work;

[0030] The present invention softly clamps the two side edges of the film through two sets of clamping mechanisms, and operates the operating parts to stretch the two sides of the film outward to straighten the film and eliminate wrinkles without manual intervention, thereby reducing the workload of operators and bringing convenience to work;

[0031] The present invention can limit the two sides of the film through the limiting mechanism to avoid the film from being offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0033] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0034] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the film processing mechanism;

[0035] Figure 4 It is a schematic diagram of the three-dimensional structure of a single operating part;

[0036] Figure 5 for Figure 4 A schematic diagram of the planar structure of the clamping mechanism and the limiting mechanism;

[0037] Figure 6 It is a schematic diagram of the planar structure of a single operating component.

[0038] The numbers in the figure represent:

[0039] 1-mounting seat; 21-first motor; 22-transmission roller; 23-gear; 3-film processing mechanism; 31-U-shaped frame; 32-first electric push rod; 33-bracket; 34-operating member; 341-mounting shell; 342-second motor; 343-rotating roller; 344-winding belt; 41-distribution box; 42-control box; 5-clamping mechanism; 51-slide rod; 52-mounting plate; 53-bolt; 54-telescopic rod; 55-linear drive; 56-moving plate; 57-long wheel; 58-slide sleeve; 6-limiting mechanism; 61-flip rod; 62-limiting vertical rod; 63-resisting rod; 64-mounting vertical plate; 7-film; 8-feed guide roller; 9-discharge guide roller. DETAILED DESCRIPTION

[0040] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0041] Embodiment 1: This embodiment provides a technical solution: a traction structure of a film blowing machine, such as Figures 1 to 6As shown, it includes a mounting base 1, a traction drive mechanism, a film processing mechanism 3 and four clamping mechanisms 5. The mounting base 1 has a vertical plate portion and a bracket portion installed on the vertical plate portion and extending laterally. The bracket portion is located on the front side of the mounting base 1 as a whole. It should be noted that: the traction drive mechanism, the film processing mechanism 3 and the four clamping mechanisms 5 are all arranged on the bracket portion, and the vertical plate portion of the mounting base 1 is installed with a distribution box 41 and a control box 42. The distribution box 41 is connected to the external power system. The distribution box 41 is used to control the power of the entire device, and the control box 42 is used to control the operation of the entire device.

[0042] A feed guide roller 8 and a discharge guide roller 9 are rotatably mounted on the mounting seat 1. Specifically, the feed guide roller 8 is mounted on the end of the bracket portion of the mounting seat 1, and the discharge guide roller 9 is mounted on the vertical plate portion of the mounting seat 1. The feed guide roller 8 is used to guide the film blown out of the film blowing machine into this device, and the discharge guide roller 9 is used to guide the film out of this device and to the winder.

[0043] The traction drive mechanism is arranged on the bracket part of the mounting seat 1, and the traction drive mechanism is located between the feed guide roller 8 and the discharge guide roller 9; the traction drive mechanism includes two vertically symmetrically arranged transmission rollers 22, and the two transmission rollers 22 are rotatably installed on the mounting seat 1, the two transmission rollers 22 are arranged in close proximity, and a first motor 21 for driving one of the transmission rollers 22 to rotate is fixed on one side of the mounting seat 1, and gears 23 are fixed at one end of the two transmission rollers 22, and the two gears 23 are meshed and connected, and the film 7 passes through between the two transmission rollers 22. When the first motor 21 is running, the two transmission rollers 22 can be driven to rotate in opposite directions through the cooperation of the two gears 23, thereby transmitting the film 7 to the rear side.

[0044] The film processing mechanism 3 is arranged on the bracket part of the mounting base 1. The film processing mechanism 3 includes two transmission components symmetrically arranged up and down. The transmission component includes a U-shaped frame 31. The two ends of the U-shaped frame 31 are respectively fixed to the bracket parts on both sides. A first electric push rod 32 is installed on the U-shaped frame 31. The telescopic end of the first electric push rod 32 is installed with two operating members 34 through a bracket 33. The two operating members 34 of the same transmission assembly are symmetrically arranged, and the total span is greater than the width of the film 7. The cooperation of the four operating members 34 can make the film 7 axially displaced along the feed guide roller 8 to achieve the position adjustment of the film 7.

[0045] Furthermore, the operating member 34 includes an installation shell 341 fixed to the bracket 33, and two rotating rollers 343 are rotatably installed in the installation shell 341. The two rotating rollers 343 jointly drive a winding belt 344. The winding belt 344 is made of a soft material, such as rubber material, so it has a certain deformation ability. A second motor 342 that drives one of the rotating rollers 343 is fixed on the installation shell 341. When the second motor 342 is running, the winding belt 344 can be driven to rotate reciprocally.

[0046] When the first electric push rods 32 of the two transmission assemblies are in a retracted state, there is a certain gap between the winding belts 344 in the two transmission assemblies, and the film 7 passes through the gap. When the position of the film 7 is offset, the first electric push rods 32 of the two transmission assemblies are extended at the same time, so that the winding belts 344 in the two transmission assemblies are close to the lateral part of one side of the film 7 to clamp the film 7. It should be noted that: this clamping is soft clamping (that is, the clamping force of the winding belt 344 on the film 7 is certain, and the normal transmission of the film 7 will not be restricted during clamping, but the axial position of the film 7 along the feed guide roller 8 can be changed); then the operating part 34 is operated to make the lateral part of the winding belt 344 that is in contact with the film 7 move to the same side, so as to pull the film 7 to one side. As the film 7 continues to be transmitted, the lateral position of the subsequent film 7 is adjusted to complete the deviation correction of the film 7. The specific deviation correction size can be set as needed.

[0047] The four clamping mechanisms 5 are respectively arranged on the four operating members 34, and the four clamping mechanisms 5 are symmetrically arranged in pairs and are respectively located on the outside of the four operating members 34, for softly clamping the two side edges of the film 7. The operating members 34 on both sides respectively stretch the two side edges of the film 7 outwards, and the specific stretching size is set according to needs, so that the film 7 is straightened to eliminate the wrinkles of the film 7.

[0048] The clamping mechanism 5 includes a mounting plate 52 mounted on the mounting shell 341, and the mounting plate 52 is located in the inner circle of the winding belt 344. The winding belt 344 forms two horizontal parts arranged up and down, and the transmission directions of the two horizontal parts are opposite. A movable plate 56 is arranged on the side of the mounting plate 52 close to the film 7, and a linear drive 55 and a telescopic rod 54 are arranged between the movable plate 56 and the mounting plate 52. The linear drive 55 can adjust the position of the movable plate 56. At the same time, the setting of the telescopic rod 54 can guide the movement of the movable plate 56 to improve the stability of the movable plate 56 during the movement. A plurality of long wheels 57 are rotatably installed on the side of the movable plate 56 close to the film 7. The setting of the long wheels 57 can reduce the friction between the movable plate 56 and the winding belt 344, so that the winding belt 344 is smoother during transmission.

[0049] In an optional embodiment, the linear drive 55 is a vertically telescopic airbag, and the airbag is connected to an external air pump through an air pipe, so that the position of the movable plate 56 can be adjusted by injecting or exhausting compressed air into the airbag.

[0050] In an optional embodiment, the linear drive 55 is a second electric push rod, the telescopic end of the second electric push rod is fixedly connected to the movable plate 56, and the position of the movable plate 56 can be adjusted by extending and retracting the telescopic end of the second electric push rod.

[0051] When in use, if the film 7 is wrinkled, the linear drive 55 is operated, the movable plate 56 will be displaced to one side of the film 7, and the two sets of long wheels 57 on one side will squeeze the corresponding lateral part of the winding belt 344 to one side of the film 7, until the lateral parts of the upper and lower winding belts 344 softly clamp the two side edges of the film 7, and then the four winding belts 344 are operated. The specific operating direction is: the lateral part of the winding belt 344 that is in contact with the film 7 is displaced outward, and the specific size is set according to needs, so that the two sides of the film 7 can be stretched outward to make the film 7 straight, and as the film 7 is transmitted, the subsequent film 7 can be restored to normal.

[0052] Furthermore, in order to adapt to the different widths of the film 7, the mounting plate 52 is set to be laterally adjustable, specifically: both sides of the mounting housing 341 are provided with elongated slots, the outer sides of the two elongated slots are provided with slide bars 51 fixed to the mounting housing 341, the two slide bars 51 are slidably sleeved with slide sleeves 58, the two sides of the mounting plate 52 are respectively fixedly connected with the two slide sleeves 58, and the two slide sleeves 58 are screwed with bolts 53 for tightening the slide bars 51. Before use, the mounting plate 52 can be moved as needed, and the position of the further movable plate 56 will also be adjusted accordingly, and the bolts 53 are tightened so that the bolts 53 abut against the slide bars 51 to fix the position of the mounting plate 52.

[0053] Embodiment 2: This embodiment is further optimized on the basis of embodiment 1, and the same parts as the above technical solution will not be repeated here. Figures 4 to 6As shown, in order to better realize the present invention, the following setting mode is particularly adopted: both sides of the clamping mechanism 5 of the upper transmission assembly are provided with a limit mechanism 6, the limit mechanism 6 includes a mounting vertical plate 64 fixed to the sliding sleeve 58, the mounting vertical plate 64 is rotatably mounted with two flip rods 61 through a rotating shaft, the outer ends of the two flip rods 61 are hinged together with a limit vertical rod 62, the lower end of the limit vertical rod 62 is extended downward, and the end of the lower flip rod 61 away from the limit vertical rod 62 has a certain length of extension, and a torsion spring (not shown in the figure) is sleeved on the rotating shaft, and the torsion spring provides the limit vertical rod 62 with a certain length of extension. The upward force, the two flip rods 61, the installation vertical plate 64 and the limiting vertical rod 62 form a parallelogram structure. Since the installation vertical plate 64 is vertically arranged, the limiting vertical rod 62 is always in a vertical state. A push rod 63 is fixed on the movable plate 56, and the push rod 63 is vertically corresponding to the end of the flip rod 61 away from the limiting vertical rod 62. When the push rod 63 rises to a certain height, it will contact the flip rod 61. Due to the lever principle, the limiting vertical rod 62 can be pushed downward to block the edge of the film 7, thereby avoiding the subsequent position displacement of the film 7.

[0054] It should be noted that the movable plate 56 has three travel states, the first is: the extended state, the horizontal part corresponding to the winding belt 344 is pushed to softly clamp the film 7, which is suitable for eliminating wrinkles on the film 7; the second is: the mid-range state, at this time, the long wheel 57 will not contact the winding belt 344, and the push rod 63 will not contact the flip rod 61, which is suitable for correcting the position of the film 7; the third is: the contracted state, at this time, the push rod 63 will contact the flip rod 61 to move the limiting vertical rod 62 downward, which is suitable for preventing the position of the film 7 from shifting.

[0055] Furthermore, in the present embodiment, the linear drive 55 preferably uses a second electric push rod, which can accurately control the extension size, and further control the inward flipping size of the limiting vertical rod 62, thereby improving the accuracy.

[0056] Embodiment 3, a traction method of the traction structure of the film blowing machine as in the embodiment, for correcting the deviation of the film 7, comprises the following steps:

[0057] Step 1: Pull the film 7 toward one side of the discharge guide roller 9 through the traction drive mechanism to achieve traction transmission of the film 7;

[0058] Step 2: Extend the telescopic ends of the two first electric push rods 32 so that the winding belts 344 of the two transmission components can softly clamp the film 7;

[0059] Step 3: operate four operating members 34 simultaneously to move the lateral portion of the winding belt 344 in contact with the film 7 to the same side, so as to pull the film 7 to one side, and adjust the lateral position of the subsequent film 7 as the film 7 continues to be transported;

[0060] Step 4: After the deviation correction of the film 7 is completed, the operating member 34 is stopped and the first electric push rod 32 is retracted.

[0061] Embodiment 4, a traction method of the traction structure of the film blowing machine of embodiment 1, for removing wrinkles from the film 7, comprises the following steps:

[0062] Step 1: Pull the film 7 toward one side of the discharge guide roller 9 through the traction drive mechanism to achieve traction transmission of the film 7;

[0063] Step 2: The moving plate 56 is extended toward one side of the film 7 by the linear drive 55, and the long wheel 57 squeezes the corresponding part of the winding belt 344 to bulge, and the bulges of the winding belt 344 corresponding to the upper and lower sides respectively softly clamp the two sides of the film 7;

[0064] Step 3: operate four operating members 34 at the same time, so that the lateral parts of the winding belt 344 that are in contact with the film 7 on both sides are moved to both sides by a set size, so as to tighten the film 7 laterally, and eliminate the wrinkles of the subsequent film 7 as the film 7 continues to be transported;

[0065] Step 4: After the wrinkles of the film 7 are eliminated, the long wheel 57 is restored to its original position by the linear drive 55 to release the soft clamping of the film 7.

[0066] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. A traction structure of a film blowing machine, characterized in that: include: A mounting seat (1), wherein a feed guide roller (8) and a discharge guide roller (9) are rotatably mounted on the mounting seat (1); A traction drive mechanism, the traction drive mechanism being arranged on the mounting seat (1), and the traction drive mechanism being located between the feed guide roller (8) and the discharge guide roller (9); A film processing mechanism (3), the film processing mechanism (3) being arranged on the mounting seat (1) and being located between the feed guide roller (8) and the traction drive mechanism, the film processing mechanism (3) comprising two transmission components symmetrically arranged in an upper and lower direction, the transmission component comprising a U-shaped frame (31), a first electric push rod (32) being mounted on the U-shaped frame (31), two operating members (34) being mounted on the telescopic end of the first electric push rod (32) via a bracket (33), the four operating members (34) cooperating to enable the film (7) to be axially displaced along the feed guide roller (8) to achieve position adjustment of the film (7); Four clamping mechanisms (5), the four clamping mechanisms (5) being respectively arranged on four operating members (34), and the four clamping mechanisms (5) being symmetrically arranged in pairs, and being used to softly clamp the two side edges of the film (7), and when the two side operating members (34) respectively stretch the two side edges of the film (7) outwards, wrinkles of the film (7) can be eliminated; The operating member (34) comprises a mounting shell (341) fixed to the bracket (33), two rotating rollers (343) are rotatably mounted in the mounting shell (341), a winding belt (344) is provided for common transmission of the two rotating rollers (343), and a second motor (342) for driving one of the rotating rollers (343) is fixed to the mounting shell (341); The clamping mechanism (5) comprises a mounting plate (52) mounted on a mounting shell (341), and the mounting plate (52) is located in the inner circle of the winding belt (344); a movable plate (56) is arranged on the side of the mounting plate (52) close to the film (7); a linear drive (55) and a telescopic rod (54) are arranged between the movable plate (56) and the mounting plate (52); and a plurality of long wheels (57) are rotatably mounted on the side of the movable plate (56) close to the film (7).

2. The traction structure of the film blowing machine according to claim 1, characterized in that: The traction drive mechanism comprises two vertically symmetrically arranged transmission rollers (22), and the two transmission rollers (22) are rotatably mounted on a mounting seat (1), a first motor (21) for driving one of the transmission rollers (22) to rotate is fixed on one side of the mounting seat (1), and a gear (23) is fixed at one end of each of the two transmission rollers (22), and the two gears (23) are meshingly connected.

3. The traction structure of the film blowing machine according to claim 1, characterized in that: The mounting plate (52) is laterally slidably mounted on the mounting shell (341), and both sides of the mounting shell (341) are provided with elongated grooves, and the outer sides of the two elongated grooves are provided with sliding rods (51) fixed to the mounting shell (341), and the two sliding rods (51) are slidably sleeved with sliding sleeves (58), and the two sides of the mounting plate (52) are respectively fixedly connected to the two sliding sleeves (58), and the two sliding sleeves (58) are screwed with bolts (53) for tightening the sliding rods (51).

4. The traction structure of the film blowing machine according to claim 3, characterized in that: Limiting mechanisms (6) are arranged on both sides of the clamping mechanism (5) of the transmission assembly on the upper side. The limiting mechanisms (6) include a mounting vertical plate (64) fixed to the sliding sleeve (58). The mounting vertical plate (64) is rotatably mounted with two flip rods (61) via a rotating shaft. The outer ends of the two flip rods (61) are hingedly connected to a limiting vertical rod (62). A torsion spring is sleeved on the rotating shaft. The torsion spring applies an upward force to the limiting vertical rod (62). A support rod (63) is fixed on the movable plate (56), and the support rod (63) vertically corresponds to an end of the flip rod (61) away from the limiting vertical rod (62).

5. The traction structure of the film blowing machine according to claim 1, characterized in that: The linear drive (55) is a vertically telescopic airbag, and the airbag is connected to an external air pump via an air pipe.

6. The traction structure of the film blowing machine according to claim 1, characterized in that: The linear drive (55) is a second electric push rod, and the telescopic end of the second electric push rod is fixedly connected to the moving plate (56).

7. A traction method of the traction structure of the film blowing machine as claimed in claim 1, for correcting the deviation of the film (7), characterized in that: The following steps are involved: Step 1: Pulling the film (7) toward one side of the discharge guide roller (9) through the traction drive mechanism to achieve traction transmission of the film (7); Step 2: Extend the telescopic ends of the two first electric push rods (32) so that the winding belts (344) of the two transmission components can softly clamp the film (7); Step 3: operating four operating members (34) simultaneously to move the lateral portions of the winding belt (344) in contact with the film (7) to the same side, thereby pulling the film (7) to one side, and adjusting the lateral position of the subsequent film (7) as the film (7) continues to be transported; Step 4: After the position correction of the film (7) is completed, the operating member (34) is stopped and the first electric push rod (32) is retracted.

8. A traction method of the traction structure of the film blowing machine as claimed in claim 1, for removing wrinkles from the film (7), characterized in that: The following steps are involved: Step 1: Pulling the film (7) toward one side of the discharge guide roller (9) through the traction drive mechanism to achieve traction transmission of the film (7); Step 2: The moving plate (56) is extended toward one side of the film (7) by the linear drive (55), and the long wheel (57) squeezes the corresponding part of the winding belt (344) to bulge, so that the bulges of the winding belt (344) corresponding to the upper and lower sides respectively softly clamp the two sides of the film (7); Step 3: operating four operating members (34) simultaneously, so that the lateral parts of the winding belt (344) that are in contact with the film (7) on both sides are moved to both sides by a set size, so as to tighten the film (7) laterally, and eliminate wrinkles of the subsequent film (7) as the film (7) continues to be transported; Step 4: After the wrinkles of the film (7) are eliminated, the long wheel (57) is restored to its original position by the linear drive (55) to release the soft clamping of the film (7).

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