Film traction device

Abstract

The utility model provides a thin film traction device. The thin film traction device comprises a base arranged in a circular shape, a traction part rotationally connected to the base, a transmission mechanism arranged on the traction part and a multi-stage guide roller mechanism connected to the upper portion of the traction part through the transmission mechanism in a transmission mode. The transmission mechanism comprises a first cylindrical gear and a second cylindrical gear, the multi-stage guide roller mechanism comprises a plurality of guide roller mechanisms which are arranged at intervals in the height direction of the connecting shaft, each guide roller mechanism corresponds to the second cylindrical gear in a one-to-one mode, and each guide roller mechanism is in transmission with the corresponding second cylindrical gear to rotate; therefore, the thin film wound around the traction part and the guide roller mechanisms is stretched. And at least one guide roller mechanism is provided with a heating part, and the heating part is used for shaping the wound thin film. According to the utility model, a plurality of guide roller mechanisms rotate to realize reciprocating stretching of the film and heating of the heating part, so that the film is heated and stretched at the same time, the input cost of production equipment can be greatly reduced, and the production efficiency of a film traction process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing equipment, in particular to a film traction device. Background Art

[0002] Blown film is a plastic processing method that refers to a plastic processing technology that heats and melts plastic particles and then blows them into a film. It usually involves extruding the polymer into a tubular film blank, and then using high-pressure air to inflate the tube film to the required thickness under a good melt flow state. After cooling and shaping, it becomes a film. After the film is produced, a winding reel is needed to wind it up.

[0003] In the prior art, the film needs to be stretched and shaped before it is rolled up. The common method in the prior art is to transfer the film into an oven for heating, and then tow it through a traction mechanism to achieve the desired film dimensions, and then to shape it through air cooling. The working process is cumbersome, and more production equipment is used. The production line occupies a large area and the production equipment cost is high. Utility Model Content

[0004] In view of this, the utility model aims to provide a film pulling device, which can simultaneously perform stretching by multi-stage guide rollers and heating by a heating unit, thereby reducing the investment in oven equipment and air cooling equipment and lowering equipment costs.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A film traction device comprises a circularly arranged base, a traction part rotatably connected to the base, a transmission mechanism arranged on the traction part, and a multi-stage guide roller mechanism above the traction part transmission-connected through the transmission mechanism;

[0007] The base is provided with a first driving part for driving the traction part to rotate;

[0008] The traction unit includes a driving roller and a driven roller for traction of the film, and a second driving unit for driving the driving roller to rotate;

[0009] The transmission mechanism comprises a first cylindrical gear arranged on the traction part, and a second cylindrical gear meshing with the first cylindrical gear for transmission, and a connecting shaft is longitudinally arranged on the traction part;

[0010] Along the height direction of the connecting shaft, a plurality of the second cylindrical gears are sleeved on the connecting shaft at intervals, and the second cylindrical gear located at the bottom is meshed with the first cylindrical gear;

[0011] The multi-stage guide roller mechanism comprises a plurality of guide roller mechanisms arranged at intervals along the height direction of the connecting shaft, each of the guide roller mechanisms corresponds to the second cylindrical gear one by one, and each of the guide roller mechanisms is respectively driven to rotate by the corresponding second cylindrical gear, so that the film passing through the traction part and the plurality of guide roller mechanisms is stretched;

[0012] At least one of the guide roller mechanisms is provided with a heating portion, and the heating portion is used to shape the wound film.

[0013] Furthermore, the base includes a fixed seat arranged in a circular shape, and a rotating seat arranged inside the fixed seat, and the traction part is arranged on the rotating seat.

[0014] A chain is arranged outside the fixed seat, a sprocket which meshes with the chain for transmission is arranged at the power output end of the first driving unit, and the first driving unit is connected to the rotating seat.

[0015] Furthermore, the traction part further comprises a mounting frame connected to the rotating seat, the active roller and the driven roller are rotatably connected to the mounting frame, and the mounting frame is further provided with a third driving part for driving the driven roller to reciprocate along the width direction of the mounting frame;

[0016] The third driving unit drives the driven roller to approach or move away from the driven roller.

[0017] Furthermore, the mounting frame is also provided with a mounting shaft arranged vertically upward, and the first cylindrical gear is sleeved on the mounting shaft;

[0018] The connecting shaft is arranged on the mounting frame and is arranged parallel to the mounting shaft;

[0019] The transmission mechanism further comprises a plurality of bevel gears located above the second cylindrical gear at the bottom end, the bevel gears meshing with their corresponding second cylindrical gears for transmission, the bevel gears being fixedly connected to their corresponding guide roller mechanisms, and the bevel gears being sleeved on the mounting shaft;

[0020] A fixing frame is provided above the installation shaft, and the installation shaft is pivotally connected to the fixing frame;

[0021] The fixing frame is fixedly connected to the ground.

[0022] Furthermore, the guide roller mechanism comprises a first guide roller mechanism and a second guide roller mechanism which are sleeved on the mounting shaft and arranged in sequence from bottom to top;

[0023] Along the axial direction of the installation shaft, the first guide roller mechanism and the second guide roller mechanism are arranged in parallel;

[0024] Along the radial projection of the mounting axis, the first guide roller mechanism and the second guide roller mechanism are arranged at an angle;

[0025] The first guide roller mechanism and the second guide roller mechanism have the same structure, and the bevel gears connected to the first guide roller mechanism and the second guide roller mechanism are arranged at an angle.

[0026] Further, the first guide roller mechanism includes a connecting tube fixedly connected to the corresponding bevel gear, and a first guide shaft arranged on the side of the connecting tube away from the bevel gear, and mounting plates are arranged at both ends of the connecting tube, and the first guide shaft is rotatably connected between the two mounting plates;

[0027] The heating part is connected to the connecting pipe, and the heating part is connected to the first guide shaft.

[0028] Furthermore, the heating part adopts an electric heating fan, the guide roller is provided with an inner cavity penetrating along its own axial direction, and the mounting plate is provided with an air outlet communicating with the inner cavity.

[0029] The outlet of the electric heating fan enters the inner cavity through the air duct and one side of the guide roller, and the other side of the inner cavity is used for exhaust.

[0030] Furthermore, a shield is provided on one side of the connecting shaft, and the upper end of the connecting shaft is rotatably connected to the shield;

[0031] A third guide roller mechanism is further provided between the first guide roller mechanism and the second guide roller mechanism.

[0032] The third guide roller mechanism comprises a support frame connected to the shield, and a third guide shaft is provided on a side of the support frame away from the connecting shaft;

[0033] In the horizontal projection, the third guide shaft is arranged on a side of the first guide shaft away from the connecting shaft.

[0034] Furthermore, the support frame is sleeved on the installation shaft, and a bearing is provided between the installation shaft and the support frame.

[0035] Furthermore, a bearing seat sleeved on the mounting shaft is provided below the bevel gear.

[0036] Compared with the prior art, the utility model has the following advantages:

[0037] The film pulling device described in the utility model drives a plurality of guide roller mechanisms to rotate respectively by setting a transmission mechanism to realize reciprocating stretching of the film, and heats the film wound on the guide roller mechanism by a heating part arranged on the guide roller mechanism, so that the film is heated and stretched at the same time, thereby reducing the use of the oven heating process and the separately set pulling and stretching process in the prior art, which can not only greatly reduce the investment cost of the production equipment and reduce the floor space, but also improve the production efficiency of the film pulling process.

[0038] In addition, a relatively rotating rotating seat is arranged on the base, and a traction part is arranged on the rotating seat, so that the traction part rotates relatively with the preceding film guiding mechanism, thereby playing a stretching role while the active roller and the driven roller squeeze the film. The rotating traction part is combined with the respective rotating guide roller mechanisms to achieve the purpose of multi-stage stretching of the film, further ensuring the stretching effect of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0040] Figure 1 It is a three-dimensional structural schematic diagram of a film pulling device and a transfer roller according to an embodiment of the utility model installed on the ground from a first viewing angle;

[0041] Figure 2 It is a schematic diagram of a three-dimensional structure of a film pulling device and a transfer roller according to an embodiment of the utility model installed on the ground from a second viewing angle;

[0042] Figure 3 This is a schematic diagram of the front view of the film pulling device and the transfer roller according to the embodiment of the utility model installed on the ground;

[0043] Figure 4 It is a schematic diagram of the three-dimensional structure of the film pulling device according to an embodiment of the utility model from a first viewing angle;

[0044] Figure 5 It is a schematic diagram of the three-dimensional structure of the film pulling device described in the embodiment of the utility model from a second viewing angle.

[0045] Description of reference numerals:

[0046] 1. Base; 2. Traction unit; 3. Transmission mechanism; 4. Multi-stage guide roller mechanism; 5. Heating unit; 6. Mounting shaft; 7. Fixed frame; 8. Bracket; 9. Transfer roller;

[0047] 101, first driving part; 102, fixed seat; 103, rotating seat; 104, sprocket;

[0048] 201, active roller; 202, driven roller; 203, second driving unit; 204, mounting frame; 205, third driving unit; 206, first conduction roller; 207, second conduction roller;

[0049] 301, first cylindrical gear; 302, second cylindrical gear; 303, connecting shaft; 304, bevel gear; 305, shield; 306, bearing seat;

[0050] 401, first guide roller mechanism; 402, second guide roller mechanism; 403, third guide roller mechanism;

[0051] 501, air duct;

[0052] 4011, connecting pipe; 4012, first guide shaft; 4013, mounting plate;

[0053] 4021, second guide shaft;

[0054] 4031. Support frame; 4032. Third guide shaft. DETAILED DESCRIPTION

[0055] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0056] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0058] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0059] This embodiment relates to a film pulling device, the overall structure of which is as follows: Figure 1 to Figure 2As shown, the film traction device includes a circularly arranged base 1, a traction part 2 rotatably connected to the base 1, a transmission mechanism 3 provided on the traction part 2, and a multi-stage guide roller mechanism 4 connected above the traction part 2 through the transmission mechanism 3.

[0060] The base 1 is provided with a first driving part 101 for driving the traction part 2 to rotate. The traction part 2 includes an active roller 201 and a driven roller 202 for traction of the film, and a second driving part 203 for driving the active roller 201 to rotate. The transmission mechanism 3 includes a first cylindrical gear 301 provided on the traction part 2, and a second cylindrical gear 302 meshing with the first cylindrical gear 301 for transmission, and a connecting shaft 303 is longitudinally provided on the traction part 2. Along the height direction of the connecting shaft 303, a plurality of second cylindrical gears 302 are sleeved on the connecting shaft 303 at intervals, and the second cylindrical gear 302 at the bottom is meshed with the first cylindrical gear 301.

[0061] Secondly, the multi-stage guide roller mechanism 4 includes a plurality of guide roller mechanisms spaced apart in the height direction of the connecting shaft 303, each guide roller mechanism corresponds to the second cylindrical gear 302 one by one, and each guide roller mechanism is driven and rotated by the corresponding second cylindrical gear 302 to stretch the film wound around the traction part 2 and the plurality of guide roller mechanisms. At least one guide roller mechanism is provided with a heating part 5, and the heating part 5 is used to shape the wound film.

[0062] The film pulling device of this embodiment drives a plurality of guide roller mechanisms to rotate by setting a transmission mechanism 3 to achieve reciprocating stretching of the film, and heats the film wound on the guide roller mechanism by a heating unit 5 arranged on the guide roller mechanism, so that the film is heated and stretched at the same time, thereby reducing the use of the oven heating process and the separately set pulling and stretching process in the prior art, which can not only greatly reduce the investment cost of the production equipment and reduce the floor space, but also improve the production efficiency of the film pulling process.

[0063] Based on the above overall introduction, an exemplary structure of the film pulling device of this embodiment is as follows: Figures 1 to 3 As shown, the film traction device is arranged after the film blowing process and the film guiding process, and is located above the film blowing mechanism and the film guiding mechanism, and is used to receive the film transmitted upward and heat and stretch it, and then transmit it to the winding mechanism after shaping. As an exemplary structure of this embodiment, after the film is heated and stretched in the traction part 2 and the multi-stage guide roller mechanism 4, it is cooled and shaped at room temperature during the process of transmitting the film that meets the size requirements from top to bottom to the winding mechanism.

[0064] As a preferred implementation mode, Figure 1 and Figure 2As shown, the base 1 of this embodiment includes a fixed seat 102 arranged in a circular ring, and a rotating seat 103 arranged inside the fixed seat 102, the traction part 2 is arranged on the rotating seat 103, a chain is arranged outside the fixed seat 102, a sprocket 104 meshing with the chain is arranged at the power output end of the first driving part 101, and the first driving part 101 is connected to the rotating seat 103. Preferably, the first driving part 101 adopts a servo motor with a reducer.

[0065] Still Figures 1 to 3 As shown, the base 1 of this embodiment is set on the ground, and the ground has a circular hole. The film transmitted from the film guide mechanism passes through the circular hole and enters the traction part 2. The fixed seat 102 protrudes from the ground and is arranged at the circular hole and is concentric with the circular hole. The rotating seat 103 is a circular ring structure arranged inside the fixed seat 102. The first driving part 101 is bolted and fixed to the rotating seat 103 through a motor plate.

[0066] In this embodiment, a relatively rotatable rotating seat 103 is provided on the base 1, and the traction part 2 is provided on the rotating seat 103, so that the traction part 2 rotates relatively to the preceding film guiding mechanism, thereby playing a stretching role while the active roller 201 and the driven roller 202 squeeze the film. The rotating traction part 2 is combined with the respective rotating guide roller mechanisms to achieve the purpose of multi-stage stretching of the film, thereby further ensuring the stretching effect of the film.

[0067] In addition, the second driving part 203 is a servo motor connected to one side of the active roller 201, and its rotation speed can be adjusted according to the traction speed of the traction part 2. As a specific implementation of this embodiment, the active roller 201 is made of metal, and the outer periphery of the driven roller 202 is made of rubber material to increase the traction friction.

[0068] In order to facilitate the adjustment of the film position transmitted from the film guide mechanism to the traction unit 2, as shown in FIG. Figure 4 and Figure 5 As shown, the traction unit 2 further includes a mounting frame 204 connected to the rotating seat 103, the active roller 201 and the driven roller 202 are rotatably connected to the mounting frame 204, and the mounting frame 204 is further provided with a third driving unit 205 for driving the driven roller 202 to reciprocate along the width direction of the mounting frame 204. In this embodiment, the third driving unit 205 adopts a telescopic cylinder, and the third driving unit 205 drives the driven roller 202 to approach or move away from the driven roller 202. In addition, by setting the gap between the driven roller 202 and the active roller 201 to be adjustable, it can also adapt to the preparation of films of different thicknesses.

[0069] Furthermore, if Figures 1 to 3As shown, a fixing frame 7 is provided above the installation shaft 6, and the installation shaft 6 is pivotally connected to the fixing frame 7, and the fixing frame 7 is fixedly connected to the ground. The fixing frame 7 is composed of two upright posts fixed on the ground and a horizontal post arranged between the two upright posts, wherein the horizontal post is connected to the upper end of the installation shaft 6.

[0070] like Figure 4 and Figure 5 As shown, the mounting frame 204 is also provided with a mounting shaft 6 arranged vertically upward, and the first cylindrical gear 301 is sleeved on the mounting shaft 6. The connecting shaft 303 is arranged on the mounting frame 204 and is arranged parallel to the mounting shaft 6. The transmission mechanism 3 also includes a plurality of bevel gears 304 located above the second cylindrical gear 302 at the bottom, and the bevel gears 304 are meshed with the corresponding second cylindrical gears 302 for transmission, and the bevel gears 304 are fixedly connected to their corresponding guide roller mechanisms. By arranging the bevel gears 304 on the guide roller mechanism, the rotation of the guide roller mechanism is facilitated, and the structure is simple to set and easy to implement, and the gear transmission can ensure a large transmission torque and good stability.

[0071] In addition, if Figures 1 to 5 As shown, the guide roller mechanism includes a first guide roller mechanism 401 and a second guide roller mechanism 402 which are sleeved on the mounting shaft 6 and arranged sequentially from bottom to top. Along the axial direction of the mounting shaft 6, the first guide roller mechanism 401 and the second guide roller mechanism 402 are arranged in parallel. Along the radial projection of the mounting shaft 6, the first guide roller mechanism 401 and the second guide roller mechanism 402 are arranged at an angle. The first guide roller mechanism 401 has the same structure as the second guide roller mechanism 402, and the bevel gear 304 connected to the first guide roller mechanism 401 and the second guide roller mechanism 402 is arranged at an angle.

[0072] Furthermore, if Figure 4 and Figure 5 As shown, the first guide roller mechanism 401 includes a connecting tube 4011 fixedly connected to the corresponding bevel gear 304, and a first guide shaft 4012 arranged on the side of the connecting tube 4011 away from the bevel gear 304, and mounting plates 4013 are arranged at both ends of the connecting tube 4011, and the first guide shaft 4012 is rotatably connected between the two mounting plates 4013. The heating part 5 is connected to the connecting tube 4011, and the heating part 5 is connected to the first guide shaft 4012. As described above, the first guide roller mechanism 401 and the second guide roller mechanism 402 of this embodiment have the same structure, and will not be repeated here.

[0073] Preferably, the heating part 5 uses an electric heating fan, the guide roller is provided with an inner cavity penetrating along its own axial direction, and an air outlet connected to the inner cavity is provided on the mounting plate 4013. The outlet of the electric heating fan enters the inner cavity through the air duct 501 and one side of the guide roller, and the other side of the inner cavity is used for exhaust.

[0074] In addition, if Figure 4 and Figure 5As shown, a shield 305 is provided on one side of the connecting shaft 303, and the upper end of the connecting shaft 303 is rotatably connected to the shield 305. A third guide roller mechanism 403 is also provided between the first guide roller mechanism 401 and the second guide roller mechanism 402. The third guide roller mechanism 403 includes a support frame 4031 connected to the shield 305, and a third guide shaft 4032 is provided on the side of the support frame 4031 away from the connecting shaft 303. In the horizontal projection, the third guide shaft 4032 is provided on the side of the first guide shaft 4012 away from the connecting shaft 303.

[0075] In addition, in order to facilitate film winding, a support 8 is provided on the ground, which is adapted to the height of the second guide roller mechanism 402. A transfer roller 9 for conducting the film is provided on the support 8. The film is transmitted to the winding mechanism below through the transfer roller 9. In addition, a first transfer roller 206 adapted to the height of the first guide shaft 4012 and a second transfer roller 207 adapted to the height of the active roller 201 are provided on the side of the mounting frame 204 close to the transfer roller 9. The first transfer roller 206 is provided above the second transfer roller 207.

[0076] In this embodiment, by providing two first guide roller mechanisms 401 and second guide roller mechanisms 402 arranged at intervals, and a third guide roller mechanism 403 provided between the first guide roller mechanism 401 and the second guide roller mechanism 402, the film can be squeezed out from between the active roller 201 and the driven roller 202, and reciprocatedly wound around the first guide roller mechanism 401, the third guide roller mechanism 403, and the second guide roller mechanism 402. When the film is wound by each guide roller mechanism, it rotates with the guide roller mechanism to achieve stretching.

[0077] In order to ensure the smooth connection between the mounting shaft 6 and the support frame 4031, as Figure 4 and Figure 5 As shown, the support frame 4031 is sleeved on the installation shaft 6, and a bearing is provided between the installation shaft 6 and the support frame 4031. In this embodiment, a thrust ball bearing is provided on the installation shaft 6 at a position corresponding to the support frame 4031, and a bearing plate adapted to the outer ring of the thrust ball bearing is provided on the support frame 4031. When the support frame 4031 rotates with the shield 305, the support frame 4031 rotates smoothly, and the support frame 4031 is ensured to be stably maintained on the installation shaft 6, thereby ensuring that the film on the third guide shaft 4032 is stretched smoothly without jamming.

[0078] In addition, if Figure 4 As shown, a bearing seat 306 sleeved on the mounting shaft 6 is provided below the bevel gear 304 connected to the first guide roller mechanism 401 and the second guide roller mechanism 402. The bearing seat 306 is provided to ensure smooth rotation of the bevel gear 304 and the mounting shaft 6, and to prevent the bevel gear 304 from tilting and getting stuck due to radial force when being sleeved on the mounting shaft 6.

[0079] The working process of the film pulling device of this embodiment is as follows:

[0080] As mentioned above, when the first driving unit 101 is started, the mounting frame 204 rotates with the rotating seat 103, and the film squeezed out from the active roller 201 and the driven roller 202 is rotated and stretched. The film is wound from the second conduction roller 207 fixed on one side of the mounting frame 204 around the first conduction roller 206 and then wound toward the first guide shaft 4012, and then wound from the first guide shaft 4012 to the third guide shaft 4032. After passing through the third guide shaft 4032, the film is wound toward the second guide shaft 4021 set on the second guide roller mechanism 402, and finally transmitted to the winding mechanism through the conduction of the transfer roller 9.

[0081] While the film is being transmitted, the traction part 2 and the multi-stage guide roller mechanism 4 mesh with the first cylindrical gear 301 and the second cylindrical gear 302, wherein the mounting shaft 6 is the rotation center of the traction part 2 and the multi-stage guide roller mechanism 4, that is, through the meshing of the first cylindrical gear 301 and the second cylindrical gear 302, the mounting frame 204 rotates relative to the mounting shaft 6, thereby driving the second cylindrical gears 302 on the connecting shaft 303 to rotate, and then the bevel gear 304 located on the first guide roller mechanism 401 and the second guide roller mechanism 402 meshes with the second cylindrical gear 302, driving the first guide shaft 4012 and the second guide shaft 4021 to rotate reciprocatingly, thereby achieving the effect of stretching the film, and the angle of the first guide shaft 4012 and the second guide shaft 4021 is adjusted by the angle setting between the two bevel gears 304, and the relative angle is adjusted according to the requirements of different film thicknesses to achieve the purpose of stretching.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A film pulling device, characterized in that: The invention comprises a circularly arranged base (1), a traction part (2) rotatably connected to the base (1), a transmission mechanism (3) provided on the traction part (2), and a multi-stage guide roller mechanism (4) above the traction part (2) transmission-connected via the transmission mechanism (3); The base (1) is provided with a first driving part (101) for driving the traction part (2) to rotate; The traction unit (2) comprises a driving roller (201) and a driven roller (202) for traction of the film, and a second driving unit (203) for driving the driving roller (201) to rotate; The transmission mechanism (3) comprises a first cylindrical gear (301) provided on the traction part (2), and a second cylindrical gear (302) meshing with the first cylindrical gear (301) for transmission, and a connecting shaft (303) is longitudinally provided on the traction part (2); Along the height direction of the connecting shaft (303), a plurality of the second cylindrical gears (302) are sleeved on the connecting shaft (303) at intervals, and the second cylindrical gear (302) located at the bottom is meshed with the first cylindrical gear (301); The multi-stage guide roller mechanism (4) comprises a plurality of guide roller mechanisms spaced apart along the height direction of the connecting shaft (303), each of the guide roller mechanisms corresponding to the second cylindrical gear (302) one by one, and each of the guide roller mechanisms is driven to rotate by the corresponding second cylindrical gear (302) so as to stretch the film passing through the traction portion (2) and the plurality of guide roller mechanisms; At least one of the guide roller mechanisms is provided with a heating portion (5), and the heating portion (5) is used to shape the wound film.

2. The film pulling device according to claim 1, characterized in that: The base (1) comprises a fixed seat (102) arranged in a circular shape, and a rotating seat (103) arranged inside the fixed seat (102), and the traction part (2) is arranged on the rotating seat (103). A chain is provided on the outside of the fixed seat (102); a sprocket (104) meshing with the chain for transmission is provided at the power output end of the first driving part (101); and the first driving part (101) is connected to the rotating seat (103).

3. The film pulling device according to claim 2, characterized in that: The traction part (2) further comprises a mounting frame (204) connected to the rotating seat (103); the active roller (201) and the driven roller (202) are rotatably connected to the mounting frame (204); and the mounting frame (204) is further provided with a third driving part (205) for driving the driven roller (202) to reciprocate along the width direction of the mounting frame (204); The third driving unit (205) drives the driven roller (202) to move closer to or farther away from the driven roller (202).

4. The film pulling device according to claim 3, characterized in that: The mounting frame (204) is also provided with a mounting shaft (6) arranged vertically upward, and the first cylindrical gear (301) is sleeved on the mounting shaft (6); The connecting shaft (303) is arranged on the mounting frame (204) and is arranged parallel to the mounting shaft (6); The transmission mechanism (3) further comprises a plurality of bevel gears (304) located above the second cylindrical gear (302) at the bottom end, the bevel gears (304) meshing with their corresponding second cylindrical gears (302) for transmission, and the bevel gears (304) are fixedly connected to their corresponding guide roller mechanisms; A fixing frame (7) is provided above the installation shaft (6), and the installation shaft (6) is pivotally connected to the fixing frame (7); The fixing frame (7) is fixedly connected to the ground.

5. The film pulling device according to claim 4, characterized in that: The guide roller mechanism comprises a first guide roller mechanism (401) and a second guide roller mechanism (402) which are sleeved on the mounting shaft (6) and arranged in sequence from bottom to top; Along the axial direction of the installation shaft (6), the first guide roller mechanism (401) and the second guide roller mechanism (402) are arranged in parallel; Along the radial projection of the installation shaft (6), the first guide roller mechanism (401) and the second guide roller mechanism (402) are arranged at an angle; The first guide roller mechanism (401) and the second guide roller mechanism (402) have the same structure, and the bevel gear (304) connected to the first guide roller mechanism (401) and the second guide roller mechanism (402) is arranged at an angle.

6. The film pulling device according to claim 5, characterized in that: The first guide roller mechanism (401) comprises a connecting tube (4011) fixedly connected to the corresponding bevel gear (304), and a first guide shaft (4012) arranged on a side of the connecting tube (4011) away from the bevel gear (304), mounting plates (4013) are arranged at both ends of the connecting tube (4011), and the first guide shaft (4012) is rotatably connected between the two mounting plates (4013); The heating part (5) is connected to the connecting pipe (4011), and the heating part (5) is connected to the first guide shaft (4012).

7. The film pulling device according to claim 6, characterized in that: The heating part (5) adopts an electric heating fan, the guide roller is provided with an inner cavity penetrating along its own axial direction, and the mounting plate (4013) is provided with an air outlet communicating with the inner cavity. The outlet of the electric heating fan enters the inner cavity through the air duct (501) and one side of the guide roller, and the other side of the inner cavity is used for exhaust.

8. The film pulling device according to claim 6, characterized in that: A protective cover (305) is provided on one side of the connecting shaft (303), and the upper end of the connecting shaft (303) is rotatably connected to the protective cover (305); A third guide roller mechanism (403) is further provided between the first guide roller mechanism (401) and the second guide roller mechanism (402). The third guide roller mechanism (403) comprises a support frame (4031) connected to the shield (305), and a third guide shaft (4032) is provided on a side of the support frame (4031) away from the connecting shaft (303); In the horizontal projection, the third guide shaft (4032) is arranged on a side of the first guide shaft (4012) away from the connecting shaft (303).

9. The film pulling device according to claim 8, characterized in that: The support frame (4031) is sleeved on the installation shaft (6), and a bearing is provided between the installation shaft (6) and the support frame (4031).

10. The film pulling device according to claim 4, characterized in that: A bearing seat (306) sleeved on the mounting shaft (6) is provided below the bevel gear (304).

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