Bidirectional film stretching processing production line

Abstract

The invention discloses a processing production line for bidirectional film stretching, and belongs to the technical field of film stretching mechanisms. The rotary cleaning mechanism comprises a first motor arranged on the workbench, an output shaft of the first motor penetrates through the frame and extends to the driving roller, the output shaft of the first motor is in transmission connection with the rotating wheel through a conveying belt, and one end of the rotating wheel is connected with a cleaning roller arranged on the frame; a cleaning cavity is formed between the cleaning roller and the driving roller; and the guide adjusting mechanism comprises a first guide roller on the frame, and a second guide roller and a third guide roller which are in contact and fit with the film are arranged under the first guide roller. The technical problems that an existing stretching mechanism cannot adaptively clamp and fix film bodies with different area sizes, the structural design integration performance is poor, and an independent heat sealing or cutting mechanism needs to be designed later for machining and packaging are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of film stretching mechanisms, and in particular relates to a production line for bidirectional film stretching processing. Background Art

[0002] Film stretching machine is mainly used for the production of uniaxially stretched polyethylene plastic film and cling film. It consists of three parts: main machine, auxiliary machine and electrical control. Its main work is to pass the flat stretchable film through the laminating heating plate to increase the temperature of the film to increase the plasticity of the film, and then stretch the film into the same shape as the mold through compressed air and exhaust. In addition, it can also cooperate with the clamping mechanism to stretch the film to the corresponding required shape.

[0003] The stretching principle of the film refers to the process of applying a tensile load to the longitudinal axis of the plastic sample under the specified test temperature, humidity and stretching speed to deform the sample until the material is destroyed. In this process, the maximum load when the sample is destroyed and the change in the corresponding distance between the markings are recorded.

[0004] When the film is stretched by the clamping mechanism, the existing clamping mechanism is relatively simple in design and cannot adaptively clamp and fix films of different area sizes, that is, the telescopic distance of the clamping mechanism cannot be adjusted in length, and the structural design has poor integration performance, requiring subsequent design of a separate heat sealing or cutting mechanism for processing and packaging, which reduces work efficiency. In addition, during the film transportation process, a small amount of dust and impurities may adhere to the surface of the film during long-term transportation on the production line, which also affects the improvement of subsequent product quality. Summary of the invention

[0005] The purpose of the present invention is to provide a bidirectional film stretching processing production line to solve the technical problems that the existing stretching mechanism cannot adaptively clamp and fix films of different area sizes, the structural design has poor integration performance, and a separate heat sealing or cutting mechanism needs to be designed later for processing and packaging.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A production line for biaxial film stretching, comprising:

[0008] Workbench;

[0009] A rotary cleaning mechanism, the rotary cleaning mechanism comprising a first motor placed on a workbench, the output shaft of the first motor passing through the frame and extending to the driving roller, the output shaft of the first motor and the rotating wheel are connected by a conveyor belt transmission, one end of the rotating wheel is connected to a cleaning roller placed on the frame, and a cleaning chamber is provided between the cleaning roller and the driving roller;

[0010] A guide adjustment mechanism, the guide adjustment mechanism comprises a first guide roller on the frame, a second guide roller and a third guide roller are arranged directly below the first guide roller and are in contact with the film, one end of the second guide roller and the third guide roller are respectively connected to the upper gear plate and the lower gear plate through a first slider, the upper gear plate and the lower gear plate are meshed with central rotating teeth, and the first slider is connected with a strip groove adapted thereto along the length direction of the frame;

[0011] Among them, the upper gear plate, the lower gear plate and the center gear are all placed in a cover body fixed on the frame, and a movable opening connected to the upper gear plate and the lower gear plate is opened on the top of the cover body, the second guide roller and the third guide roller are set at the same height, and a fourth guide roller is provided on the frame and is parallel to the third guide roller.

[0012] Furthermore, it also includes a stretching and cutting mechanism, which includes a heating plate placed on a workbench, a second motor is installed inside the workbench, the output shaft of the second motor extends to the reciprocating screw through a coupling, both ends of the reciprocating screw are spirally driven with a second slider that moves in the opposite direction, one end of the second slider passes through the workbench and is correspondingly connected to the multi-diamond rod, and rotating shafts are installed at the nodes of the multi-diamond rod, and both ends of the rotating shaft are installed on the multi-diamond rod by a rotating connection.

[0013] Furthermore, a fixed block is positioned and installed at the rotating shaft at the horizontal center of the multi-diamond rod, a horizontal cylinder is installed on the fixed block, the piston rod on the horizontal cylinder is connected to the U-shaped plate, vertical cylinders are installed on both sides of the top of the U-shaped plate through brackets, the bottom of the piston rod on the vertical cylinder passes through the U-shaped plate and extends to the clamping block, and a clamping cavity is formed between the clamping block and the bottom of the inner wall of the U-shaped plate.

[0014] Furthermore, the piston rod on the horizontal cylinder and the movable frame are connected by a telescopic rod, and a third slider is installed on one end of the movable frame away from the telescopic rod through a first swing rod, the first swing rod is symmetrically arranged relative to the center of the third slider, and the bottom of the third slider and the cutting knife on the frame are connected by a second swing rod, both ends of the cutting knife are integrally formed with a cross beam, the cross beam is connected to a limiting groove along the height direction of the frame, and the third slider is slidably connected to the panel, and the top of the panel is fixedly mounted on the top plate of the frame by a bending rod.

[0015] Furthermore, both sides of the first swing rod are installed on the third slider and the telescopic rod by means of a rotational connection, and both sides of the second swing rod are installed on the third slider and the cutting knife by means of a rotational connection. The bottom of the cutting knife is arranged in a triangular shape, and the protrusions at both ends of the third slider are connected with positioning grooves along the length direction of the panel.

[0016] Furthermore, the telescopic rod and the piston rod of the horizontal cylinder are kept vertically arranged, and a positioning hole is opened at the connection between the piston rod on the horizontal cylinder and the telescopic rod, and locking and fixing are achieved by a stop pin.

[0017] Furthermore, the bottom end of the horizontal cylinder is locked and mounted on the fixed block by a bolt assembly, and an active cavity is formed between the first swing rod and the heating plate.

[0018] Furthermore, a roller brush plate is installed on the cleaning roller by adhesive fixation. When the first motor is started, the driving roller drives the film to be transported to the first guide roller, and at the same time, the rotating wheel drives the cleaning roller to achieve reverse rotation and cleaning of the film.

[0019] Furthermore, the bottom surface of the third guide roller on the frame is kept at the same height as the top surface of the fourth guide roller, and pillars are installed around the bottom end of the workbench. The upper gear plate, the lower gear plate and the side wall of the cover are connected by compression springs.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] (1) A rotating cleaning mechanism is provided. After the first motor is started, it can not only drive the rotation of the driving roller, but also drive the rotating wheel on the conveyor belt to rotate. In this way, the driving roller can drive the film to be transported while allowing the cleaning roller to clean the surface of the film to prevent dust particles from adhering to its surface. The cleaning roller cleans by rotating in the opposite direction to the film, which can increase friction and improve the cleaning effect. In addition, the roller brush plate on the cleaning roller is connected by adhesive fixing, which effectively facilitates the subsequent disassembly and cleaning work, is beneficial to personnel operation and improves work efficiency.

[0022] (2) A guide adjustment mechanism is provided. When the film passes through the first guide roller and enters the guide cavity between the second guide roller and the third guide roller, in order to adapt to the swinging force brought by the film at different conveying speeds, the greater the speed, the greater the swinging force of the film. Therefore, the length of the guide cavity between the second guide roller and the third guide roller should also increase accordingly. By providing a central rotating tooth on the gear plate, the length of the guide cavity can be automatically adjusted, and the synchronization effect is good, so that the positions of the second guide roller and the third guide roller can be automatically corrected synchronously, that is, they can automatically move toward the center or separate. Moreover, under the action of the compression spring, the second guide roller and the third guide roller can be reset, which is beneficial to improving the working stability of the device.

[0023] (3) A stretching and cutting mechanism is set up. When the film is conveyed to the heating plate, it is heated to a certain temperature to increase the plasticity of the film. In order to adapt to the clamping work of films of different lengths, the reciprocating screw drives the second sliders at both ends to move in the opposite direction, so that the multi-diamond rod can be stretched and moved. During the stretching movement of the multi-diamond rod, the characteristic of the lateral movement of the rotating shaft at the center of the multi-diamond rod is utilized to allow the clamping mechanism of the fixed block to adjust the length according to the different lengths of the film, so that better multi-point position clamping can be achieved. In addition, the horizontal cylinder cooperates with the vertical cylinder to achieve effective clamping and stretching work on the edge of the film through the clamping block. After the stretching is completed, the third slider can drive the cutting knife to move downward during the resetting process and complete the length cutting work of the corresponding distance, which is convenient for subsequent cutting and packaging. The design is reasonable and the structural integration performance is strong.

[0024] (4) A guiding mechanism is provided, wherein the first guide roller cooperates with the fourth guide roller, which can not only enable the film to be transported over a long distance, but also prevent position deviation during the transportation process, and can also play a supporting and connecting role for the film, so that the film can be effectively and smoothly transported to the heating plate, preventing the film from wrinkling, thereby improving the stretching quality of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of a bidirectional film stretching production line of the present invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of a bidirectional film stretching production line of the present invention. Figure 2 ;

[0028] Figure 3 It is a front view of a bidirectional film stretching production line of the present invention;

[0029] Figure 4 The present invention Figure 1 A magnified image of point A;

[0030] Figure 5 It is a schematic diagram of the meshing transmission of the center rotating gear of the present invention;

[0031] Figure 6 This is a schematic diagram of the connection between the reciprocating screw and the second slider of the present invention.

[0032] Figure 7 The present invention Figure 1 The enlarged view of point B;

[0033] Figure 8 The present invention Figure 1 Enlarged view of point C;

[0034] Fig. 9 The present invention Figure 2 Enlarged view of point D.

[0035] 1. The cleaning mechanism of the present invention is as follows: 1. a workbench; 2. a rotating cleaning mechanism; 3. a first motor; 4. a driving roller; 5. a rotating wheel; 6. a conveyor belt; 7. a cleaning roller; 8. a guide adjustment mechanism; 9. a first guide roller; 10. a second guide roller; 11. a third guide roller; 12. a first slider; 13. an upper gear plate; 14. a lower gear plate; 15. a center rotating tooth; 16. a fourth guide roller; 17. a stretching and cutting mechanism; 18. a second motor; 19. a reciprocating screw; 20. a second slider; 21. a multi-diamond rod; 22. a rotating shaft; 23. a fixed block; 24. a horizontal cylinder; 25. a U-shaped plate; 26. a vertical cylinder; 27. a clamping block; 28. a moving frame; 29. ​​a telescopic rod; 30. a first swing rod; 31. a third slider; 32. a cutting knife; 33. a second swing rod; 34. a panel; 35. a bending rod; 36. a roller brush plate; 37. a compression spring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Reference Manual Attached Figure 1 and Figure 2 As shown, a biaxial film stretching production line comprises:

[0038] A workbench 1; a rotating cleaning mechanism 2, the rotating cleaning mechanism 2 includes a first motor 3 placed on the workbench 1, the output shaft of the first motor 3 passes through the frame and extends to the driving roller 4, the output shaft of the first motor 3 and the rotating wheel 5 are connected through a conveyor belt 6, one end of the rotating wheel 5 is connected to a cleaning roller 7 placed on the frame, and a cleaning chamber is provided between the cleaning roller 7 and the driving roller 4.

[0039] A rotating cleaning mechanism 2 is provided. After the first motor 3 is started, it can not only drive the driving roller 4 to rotate, but also drive the rotating wheel 5 on the conveyor belt 6 to rotate. In this way, the driving roller 4 can promote the film to be transported while allowing the cleaning roller 7 to clean the surface of the film to prevent particulate dust from adhering to its surface. The cleaning roller 7 cleans by rotating in the opposite direction to the film, which can increase friction and improve the cleaning effect. In addition, the roller brush plate 36 on the cleaning roller 7 is connected by adhesive fixing, which effectively facilitates the subsequent disassembly and cleaning work, is beneficial to personnel operation and improves work efficiency.

[0040] Specifically, when the film body is conveyed to the first guide roller 9 by the driving roller 4, the surface of the film body can be effectively cleaned under the rotation of the cleaning roller 7. At the same time, the cleaning roller 7 cleans the film body by rotating in the opposite direction, which can effectively increase the friction force and thus improve the cleaning effect. Moreover, under the transmission action of the conveyor belt 6, the cleaning roller 7 rotates, so there is no need to set up an additional power source, which is beneficial to energy saving and environmental protection.

[0041] refer to Figure 3 , Figure 4 and Figure 5 , a guide adjustment mechanism 8, the guide adjustment mechanism 8 comprises a first guide roller 9 on the frame, a second guide roller 10 and a third guide roller 11 are arranged directly below the first guide roller 9, and are in contact with the film. One end of the second guide roller 10 and the third guide roller 11 are connected to an upper gear plate 13 and a lower gear plate 14 respectively through a first slider 12, and a central rotating tooth 15 is meshed and transmitted between the upper gear plate 13 and the lower gear plate 14, and the first slider 12 is connected with a strip groove adapted thereto along the length direction of the frame;

[0042] Among them, the upper gear plate 13, the lower gear plate 14 and the center gear 15 are all placed in a cover body fixed on the frame, and a movable opening connected to the upper gear plate 13 and the lower gear plate 14 is opened on the top of the cover body, the second guide roller 10 and the third guide roller 11 are set at the same height, and a fourth guide roller 16 is provided on the frame to be parallel to the third guide roller 11.

[0043] A guide adjustment mechanism 8 is provided. When the film passes through the first guide roller 9 and enters the guide cavity between the second guide roller 10 and the third guide roller 11, in order to adapt to the swinging force brought by the film at different conveying speeds, the greater the speed, the greater the swinging force of the film. Therefore, the length of the guide cavity between the second guide roller 10 and the third guide roller 11 will also increase accordingly. By providing a center rotating tooth 15 on the gear plate, the length of the guide cavity can be automatically adjusted, and the synchronization effect is good, so that the positions of the second guide roller 10 and the third guide roller 11 can be automatically corrected synchronously, that is, they can automatically move toward the center or separate. Moreover, under the action of the compression spring 37, the second guide roller 10 and the third guide roller 11 can be reset, which is beneficial to improving the stability of the device.

[0044] Specifically, the side wall of the first guide roller 9 is maintained in the same plane as the central axis between the second guide roller 10 and the third guide roller 11, so that the second film body can effectively enter the guide cavity between the second guide roller 10 and the third guide roller 11 after passing through the first guide roller 9. In order to ensure the stability of the film body at different conveying speeds, the length of the guide cavity is adjusted to adapt to different film conveying speeds, and through the automatic adjustment setting of the guide adjustment mechanism 8, the second guide roller 10 and the third guide roller 11 can move synchronously in opposite directions, and the transmission ratio between the center gear 15 and the upper gear plate 13 is consistent with the transmission ratio between the center gear 15 and the lower gear plate 14, which can achieve the purpose of automatic adjustment with high precision.

[0045] The heights of the second guide roller 10 and the third guide roller 11 are kept consistent, and the bottom surfaces of the second guide roller 10 and the third guide roller 11 are kept at the same height as the top surface of the fourth guide roller 16, so that the film body can directly contact and fit with the fourth guide roller 16 when passing through the guide cavity. The conveying support connection function of the fourth guide roller 16 can ensure the flatness of the film body conveying.

[0046] refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 A bidirectional film stretching processing production line includes a stretching and cutting mechanism 17, which includes a heating plate placed on a workbench 1. A second motor 18 is installed inside the workbench 1. The output shaft of the second motor 18 extends to a reciprocating screw 19 through a coupling. Both ends of the reciprocating screw 19 are spirally driven with a second slider 20 that moves in the opposite direction. One end of the second slider 20 passes through the workbench 1 and is correspondingly connected to a multi-diamond rod 21. A rotating shaft 22 is installed at the node of the multi-diamond rod 21, and both ends of the rotating shaft 22 are installed on the multi-diamond rod 21 by a rotating connection.

[0047] A fixed block 23 is positioned and installed at the rotating shaft 22 at the horizontal center of the multi-diamond rod 21, and a horizontal cylinder 24 is installed on the fixed block 23. The piston rod on the horizontal cylinder 24 is connected to the U-shaped plate 25. Vertical cylinders 26 are installed on both sides of the top of the U-shaped plate 25 through brackets. The bottom of the piston rod on the vertical cylinder 26 penetrates the U-shaped plate 25 and extends to the clamping block 27. A clamping cavity is formed between the clamping block 27 and the bottom of the inner wall of the U-shaped plate 25.

[0048] A stretching and cutting mechanism 17 is provided. When the film is conveyed to the heating plate, it is heated to a certain temperature to increase the plasticity of the film. In order to adapt to the clamping work of films of different lengths, the reciprocating screw 19 drives the second sliders 20 at both ends to move in the opposite direction, so that the multi-diamond rod 21 can be stretched and moved. During the stretching movement of the multi-diamond rod 21, the characteristic of the lateral movement of the rotating shaft 22 at the center of the multi-diamond rod 21 is utilized to allow the clamping mechanism of the fixed block 23 to adjust the length according to the films of different lengths, thereby achieving better multi-point clamping work. In addition, the horizontal cylinder 24 cooperates with the vertical cylinder 26, and the clamping block 27 can realize effective clamping and stretching work on the edge of the film. After the stretching is completed, the third slider 31 can drive the cutting knife 32 to move downward during the resetting process, and complete the length cutting work of the corresponding distance, which is convenient for subsequent cutting and packaging. The design is reasonable and the structural integration performance is strong.

[0049] The piston rod on the horizontal cylinder 24 and the moving frame 28 are connected by a telescopic rod 29. A third slider 31 is installed on one end of the moving frame 28 away from the telescopic rod 29 through a first swing rod 30. The first swing rod 30 is symmetrically arranged relative to the center of the third slider 31, and the bottom of the third slider 31 and the cutting knife 32 on the frame are connected by a second swing rod 33. Both ends of the cutting knife 32 are integrally formed with a cross beam, and the cross beam is connected to a limiting groove along the height direction of the frame, and the third slider 31 is slidably connected to the panel 34, and the top of the panel 34 is fixedly mounted on the top plate of the frame by a bending rod 35.

[0050] Specifically, the stretching and cutting mechanism 17 can perform adaptive clamping and stretching work on membranes of different lengths and sizes, and can also perform corresponding cutting work, with strong integrated performance. Under the action of the second motor 18, the reciprocating screw 19 is rotated, and under the action of the spiral transmission, the second sliders 20 at both ends can move in the opposite direction, so that the multi-diamond rod 21 can be stretched and unfolded. The rotating shaft 22 at the center of the multi-diamond rod 21 can only move horizontally during the stretching process. Therefore, a clamping mechanism is set here to achieve clamping operations at multiple positions of the membrane. During the stretching process, the first swing rod 30 can drive the third slider 31 to move toward the horizontal cylinder 24, and then under the rotation connection of the second swing rod 33, the cutting knife 32 moves upward, and when the piston rod on the horizontal cylinder 24 moves toward the membrane, the cutting knife 32 can complete the cutting work, and the telescopic rod 29 set between the piston rod on the movable frame 28 and the horizontal cylinder 24 on the first swing rod 30 can allow the multi-diamond rod 21 to perform normal stretching action to prevent interference between structural parts during movement.

[0051] A guiding mechanism is provided, wherein the first guide roller 9 cooperates with the fourth guide roller 16, which can not only enable the film to be transported over a long distance, but also prevent position deviation during the transportation process, and can also support and connect the film, so that the film can be effectively and smoothly transported to the heating plate, preventing the film from wrinkling, thereby improving the stretching quality of the film.

[0052] Both sides of the first swing rod 30 are installed on the third slider 31 and the telescopic rod 29 by means of a rotational connection. Both sides of the second swing rod 33 are installed on the third slider 31 and the cutting knife 32 by means of a rotational connection. The bottom of the cutting knife 32 is arranged in a triangular shape, and the protrusions at both ends of the third slider 31 are connected with positioning grooves along the length direction of the panel 34.

[0053] The rotational connection settings of the above-mentioned first swing arm 30 and the second swing arm 33 are both for ensuring the normal horizontal movement of the third slider 31 at the panel 34. The protrusions at both ends of the third slider 31 cooperate with the positioning grooves on the panel 34 to effectively prevent the third slider 31 from deviating during the movement, and can also support and connect the third slider 31. The above-mentioned protrusions and positioning grooves are obvious conventional technical means for those skilled in the art, so there is no corresponding drawing to show it, but it does not affect the effective implementation of the technical solution of this patent.

[0054] The telescopic rod 29 and the piston rod of the horizontal cylinder 24 are kept vertically arranged, a positioning hole is opened at the connection between the piston rod on the horizontal cylinder 24 and the telescopic rod 29 and locked and fixed by a stop pin, the bottom end of the horizontal cylinder 24 is locked and mounted on the fixed block 23 by a bolt assembly, a movable cavity is formed between the first swing rod 30 and the heating plate, a roller brush plate 36 is installed on the cleaning roller 7 by adhesive fixation, as the first motor 3 is started, the driving roller 4 drives the film to be transported to the first guide roller 9, and at the same time the rotating wheel 5 drives the cleaning roller 7 to achieve reverse rotation and cleaning of the film, the bottom surface of the third guide roller 11 on the frame is kept at the same height as the top surface of the fourth guide roller 16, and pillars are installed around the bottom end of the workbench 1, and the upper gear plate 13 and the lower gear plate 14 are connected to the side wall of the cover body by compression springs 37.

[0055] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0056] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A biaxial film stretching production line, characterized in that: include: Workbench (1); A rotary cleaning mechanism (2), the rotary cleaning mechanism (2) comprising a first motor (3) placed on a workbench (1), the output shaft of the first motor (3) passing through a frame and extending to a driving roller (4), the output shaft of the first motor (3) and a rotating wheel (5) being connected by a transmission belt (6), one end of the rotating wheel (5) being connected to a cleaning roller (7) placed on the frame, and a cleaning chamber being provided between the cleaning roller (7) and the driving roller (4); A guide adjustment mechanism (8), the guide adjustment mechanism (8) comprising a first guide roller (9) on a frame, a second guide roller (10) and a third guide roller (11) being arranged directly below the first guide roller (9) and being in contact with the film, one end of the second guide roller (10) and the third guide roller (11) being respectively connected to an upper gear plate (13) and a lower gear plate (14) through a first slider (12), a central rotating tooth (15) being meshed and transmitted between the upper gear plate (13) and the lower gear plate (14), and the first slider (12) being connected to a strip groove matching the first slider along the length direction of the frame; The upper gear plate (13), the lower gear plate (14) and the central rotating gear (15) are all placed in a cover body fixed on the frame, and a movable opening connected to the upper gear plate (13) and the lower gear plate (14) is opened on the top of the cover body, the second guide roller (10) and the third guide roller (11) are arranged at the same height, and a fourth guide roller (16) arranged parallel to the third guide roller (11) is provided on the frame.

2. A biaxial film stretching production line according to claim 1, characterized in that: The invention also comprises a stretching and cutting mechanism (17), wherein the stretching and cutting mechanism (17) comprises a heating plate placed on a workbench (1), wherein a second motor (18) is installed inside the workbench (1), wherein an output shaft of the second motor (18) extends to a reciprocating screw (19) through a coupling, wherein both ends of the reciprocating screw (19) are spirally driven with a second slider (20) that moves in the opposite direction, wherein one end of the second slider (20) passes through the workbench (1) and is correspondingly connected to a multi-diamond rod (21), wherein rotating shafts (22) are installed at nodes of the multi-diamond rod (21), and both ends of the rotating shaft (22) are installed on the multi-diamond rod (21) by means of a rotational connection.

3. A biaxial film stretching production line according to claim 2, characterized in that: A fixed block (23) is positioned and installed at the rotating shaft (22) at the horizontal center of the multi-diamond rod (21), and a horizontal cylinder (24) is installed on the fixed block (23). The piston rod on the horizontal cylinder (24) is connected to the U-shaped plate (25). Vertical cylinders (26) are installed on both sides of the top of the U-shaped plate (25) through brackets. The bottom of the piston rod on the vertical cylinder (26) penetrates the U-shaped plate (25) and extends to the clamping block (27). A clamping cavity is formed between the clamping block (27) and the bottom of the inner wall of the U-shaped plate (25).

4. A biaxial film stretching production line according to claim 3, characterized in that: The piston rod on the horizontal cylinder (24) and the moving frame (28) are connected via a telescopic rod (29); a third slider (31) is installed on one end of the moving frame (28) away from the telescopic rod (29) via a first swing rod (30); the first swing rod (30) is symmetrically arranged relative to the center of the third slider (31); the bottom of the third slider (31) and a cutting knife (32) on the frame are connected via a second swing rod (33); both ends of the cutting knife (32) are integrally formed and connected with a cross beam; the cross beam is connected to a limiting groove along the height direction of the frame; the third slider (31) is slidably connected to a panel (34); the top of the panel (34) is fixedly mounted on a top plate of the frame via a bending rod (35).

5. A biaxial film stretching production line according to claim 4, characterized in that: Both sides of the first swing rod (30) are mounted on the third slider (31) and the telescopic rod (29) by means of a rotational connection, and both sides of the second swing rod (33) are mounted on the third slider (31) and the cutting knife (32) by means of a rotational connection. The bottom of the cutting knife (32) is arranged in a triangular shape, and the protrusions at both ends of the third slider (31) are connected to positioning grooves along the length direction of the panel (34).

6. A biaxial film stretching production line according to claim 4, characterized in that: The telescopic rod (29) and the piston rod of the horizontal cylinder (24) are kept vertically arranged, and a positioning hole is provided at the connection between the piston rod on the horizontal cylinder (24) and the telescopic rod (29), and locking and fixing are achieved by a stop pin.

7. A biaxial film stretching production line according to claim 6, characterized in that: The bottom end of the horizontal cylinder (24) is locked and mounted on the fixed block (23) through a bolt assembly, and an active cavity is formed between the first swing rod (30) and the heating plate (17).

8. The biaxial film stretching production line according to claim 1, characterized in that: A roller brush plate (36) is mounted on the cleaning roller (7) by means of adhesive fixation. When the first motor (3) is started, the driving roller (4) drives the film to be transported to the first guide roller (9), and at the same time, the rotating wheel (5) drives the cleaning roller (7) to perform reverse rotation cleaning on the film.

9. The biaxial film stretching production line according to claim 1, characterized in that: The bottom surface of the third guide roller (11) on the frame is at the same height as the top surface of the fourth guide roller (16), and pillars are installed around the bottom end of the workbench (1). The upper gear plate (13), the lower gear plate (14) and the side wall of the cover are connected via compression springs (37).

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