BOPP film stretching device

Abstract

The utility model belongs to the technical field of BOPP film equipment, and particularly relates to a BOPP film stretching device which comprises a base, a supporting plate is fixed to the upper surface of the base, a winding roller is rotationally arranged on the front side wall of the supporting plate, and a limiting disc is arranged at the front end of the winding roller. By arranging the wrinkle removing assembly, wrinkles existing on the surface of the formed BOPP film are flattened through the wrinkle removing assembly, the BOPP film is reversely stretched through cooperation with the first rotating roller and the second rotating roller, the first motor is used for driving, the winding roller rotates to drive the BOPP film to be wound, and after the BOPP film is finally formed into a roll, the surface of the roll is free of wrinkles and is regular; through the arrangement of the anti-deflection assemblies, the two anti-deflection assemblies are used for correcting the BOPP thin film between the first rotating roller and the second rotating roller in the moving direction, deflection of the BOPP thin film in the stretching process is avoided, it is further guaranteed that the BOPP thin film does not deflect or roll during rolling, and the final rolling quality of the BOPP thin film is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of BOPP film equipment, in particular to a BOPP film stretching device. Background Art

[0002] Biaxially oriented polypropylene film (BOPP) is generally a multi-layer co-extruded film, which is made by co-extruding polypropylene particles into sheets and then stretching them in both the longitudinal and transverse directions. Due to the orientation of the stretched molecules, this film has good physical stability, mechanical strength, and air tightness, high transparency and gloss, and is tough and wear-resistant. It is a widely used printing film. In the production process of BOPP film, a stretching device is often required.

[0003] For example, the Chinese patent with the announcement number CN217920585U discloses a BOPP film stretching and winding device, including a base, two first connecting plates are symmetrically fixedly connected to the middle of the top wall of the base, the top wall of the first connecting plate is fixedly connected to the second connecting plate, and mounting grooves are provided between the upper and lower side walls at the four corners of the base, a driving motor is fixedly installed in the middle of the top wall of the second connecting plate, a driving shaft is provided at the output end at the front center position of the driving motor, and a reel is slidably sleeved on the annular outer wall of the front side of the driving shaft. The utility model is provided with a good matching installation structure through the BOPP film stretching and winding device, that is, the whole device adopts an integrated structure, and is provided with a matching installation base, and the four corners thereof are provided with mounting grooves, which can cooperate with the mounting bolts to install the whole device on the corresponding installation station. When the installation and arrangement of the whole BOPP film stretching and winding device are performed, the whole BOPP film stretching and winding device is convenient for disassembly and assembly.

[0004] This patent has some shortcomings when used, such as: the device in this patent only uses two motors to drive two rollers and stretch and roll the BOPP film. During the stretching and rolling process, the BOPP film is prone to deflection, which results in a large number of wrinkles on the final roll film, affecting the quality of the finished product. In addition, during the stretching and rolling process, when there are certain wrinkles on the main body of the BOPP film, the device cannot eliminate the wrinkles on the film by stretching alone. After the wrinkles on the film are rolled up, the unevenness of the wrinkles makes the final roll material of low quality. In view of this, we propose a BOPP film stretching device. Utility Model Content

[0005] The utility model aims to provide a BOPP film stretching device to solve the problems raised in the above background technology.

[0006] In view of this, the utility model provides a BOPP film stretching device, comprising:

[0007] A base, a support plate is fixed on the upper surface of the base, a roller is rotatably arranged on the front side wall of the support plate, a limiting disc is arranged at the front end of the roller, a knob matching with the roller thread is arranged on the outer side of the limiting disc, the limiting disc is fixed to the front end of the roller through the knob, a motor 1 is fixed to the rear side wall of the base, the output shaft of the motor 1 passes through the outer wall of the support plate and is coaxially connected with the roller, and a pressure plate is arranged directly above the roller;

[0008] A lifting assembly, which is located on the base and is used to control the height of the pressing plate in the vertical direction;

[0009] Two support rods, the two support rods are symmetrically arranged, and the two support rods are fixedly installed on the upper surface of the base near the right side of the support plate, and a first roller and a second roller are rotatably installed between the two support rods;

[0010] Anti-deflection components, two of which are rotatably mounted on the inner sides of corresponding support rods and are used to prevent the BOPP film from deflecting during the stretching and winding process;

[0011] The de-wrinkle assembly is installed on the upper surface of the base at a right position close to the two support rods and is used for de-wrinkling the BOPP film.

[0012] In the present technical scheme, a wrinkle removal component is provided to flatten the wrinkles on the surface of the BOPP film after it is formed, and then roller one and roller two are used to perform reversing stretching on it, and motor one is used to drive the winding roller to rotate and drive the BOPP film to be rolled up, so that after the BOPP film is finally formed into a roll, the surface of the roll is wrinkle-free and regular, and an anti-deflection component is provided to correct the BOPP film in the direction of movement between roller one and roller two using two anti-deflection components, so as to avoid the BOPP film from being deflected during the stretching process, and further ensure that the BOPP film will not be deflected or rolled when being rolled up, thereby improving the quality of the final BOPP film roll.

[0013] In the above technical solution, further, the lifting assembly includes:

[0014] A lifting groove, which is opened on a supporting plate, a threaded rod is rotatably installed in the lifting groove, and the top end of the threaded rod passes through the inner top surface of the lifting groove and extends upward, the top end of the threaded rod is coaxially connected with a bevel gear 1, and the peripheral side of the bevel gear 1 is meshed with a bevel gear 2, a motor 2 is fixedly installed on the top of the supporting plate, and the output shaft of the motor 2 is coaxially connected with the bevel gear 2, an inverted L-shaped slider is slidably connected in the lifting groove, and the slider is threadedly connected to the threaded rod, and the bottom end of the slider is fixed to the upper surface of the pressing plate.

[0015] In the present technical solution, a lifting assembly is provided so that the pressing plate can be displaced in the vertical direction, ensuring that the lower surface of the pressing plate can always be attached to the upper surface of the BOPP film during the winding process of the BOPP film, so that the lower surface of the BOPP film can fit with the lower layer of the BOPP film, thereby avoiding wrinkles in the BOPP film during the stretching and winding process.

[0016] In the above technical solution, further, a protective cover is provided on the outer side of the bevel gear 1 and the bevel gear 2, and the bottom of the protective cover is fixedly connected to the upper surface of the support plate by bolts.

[0017] In the technical solution, a protective cover is provided to prevent the bevel gear 1 and the bevel gear 2 from being exposed to the outside world, thereby providing good protection for the bevel gear 1 and the bevel gear 2.

[0018] In the above technical solution, further, the roller one and the roller two are rotatably installed on the upper and lower parts of the two support rods respectively.

[0019] In the above technical solution, further, the anti-deflection component includes:

[0020] A rotating block is rotatably mounted on the middle part of the corresponding support rod, and two symmetrically arranged clamps are rotatably mounted on the inner side of the rotating block, and the clamps are in a C-shaped structure.

[0021] In this technical solution, an anti-deflection component is provided, and the side of the BOPP film is limited by a rotating block and a clamp to prevent the BOPP film from deflecting during the displacement process, thereby ensuring that the BOPP film does not wrinkle due to the deflection of the BOPP film during the subsequent winding process.

[0022] In the above technical solution, further, the wrinkle removal component includes:

[0023] Two support arms, the two support arms are symmetrically arranged, and the two support arms are fixedly installed on the upper surface of the base near the right side of the two support rods, a U-shaped plate is fixedly installed between the two support arms, a plurality of electric heating wires are installed in the U-shaped plate, an upper cover is fixed at the top opening of the U-shaped plate, a bottom plate is arranged directly below the U-shaped plate, and the two ends of the bottom plate are respectively slidably connected to the inner sides of the two support arms, two symmetrically arranged sleeves are arranged at the bottom of the bottom plate, and the bottom of the sleeve is fixed to the upper surface of the base, a connecting rod is movably inserted on the sleeve, a spring is sleeved on the outer side of the connecting rod, and the two ends of the spring are respectively fixed to the upper surface of the sleeve and the lower surface of the bottom plate.

[0024] In this technical solution, a wrinkle removal needle assembly is provided, the BOPP film is heated by an electric heating wire, and combined with the extrusion of the bottom plate, the BOPP film becomes soft when heated and can be flattened more easily, and the wrinkles on the surface of the BOPP film can be smoothed.

[0025] In the above technical solution, further, a baffle is sleeved and fixed on one side of the roller close to the support plate.

[0026] In the technical solution, a baffle is provided to prevent the BOPP film from being damaged by friction with the outer wall of the support plate during the winding process.

[0027] In the above technical solution, further, the lower surface of the pressing plate is in an arc shape, and the two lower surface edges of the pressing plate are in a smooth rounded shape.

[0028] In the technical solution, when the pressing plate is pressed on the upper surface of the BOPP film, the pressing plate will not damage the surface of the BOPP film.

[0029] The beneficial effects of the utility model are:

[0030] 1. The BOPP film stretching device is provided with a wrinkle removal component, and uses an electric heating wire to heat the BOPP film, and then cooperates with the extrusion of the bottom plate, so that the BOPP film becomes soft when heated and can be more easily flattened, and the wrinkles on the surface of the BOPP film can be smoothed, and then cooperates with rollers 1 and 2 to perform reversing stretching on it, and uses motor 1 to drive the winding roller to rotate and drive the BOPP film to be rolled up, so that after the BOPP film is finally formed into a roll, the surface of the roll is wrinkle-free and regular.

[0031] 2. The BOPP film stretching device is provided with an anti-deflection component, which uses two anti-deflection components to correct the BOPP film in the moving direction between roller one and roller two, thereby preventing the BOPP film from being deflected during the stretching process, further ensuring that the BOPP film will not be deflected or rolled when being rolled, thereby improving the quality of the final BOPP film roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 This is a schematic diagram of the structure of the wrinkle removal component in the utility model;

[0034] Figure 3 It is a structural schematic diagram of the anti-deflection component in the utility model;

[0035] Figure 4 It is a structural schematic diagram of the lifting component in the utility model;

[0036] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0037] Figure 6 It is a structural schematic diagram of the medium pressure plate of the utility model.

[0038] The symbols in the figure are:

[0039] 1. Base; 2. Support plate; 3. Roller; 4. Limiting disc; 5. Knob; 6. Motor 1; 7. Lifting slot; 8. Threaded rod; 9. Bevel gear 1; 10. Bevel gear 2; 11. Motor 2; 12. Protective cover; 13. Slider; 14. Pressure plate; 15. Baffle; 16. Support rod; 17. Roller 1; 18. Roller 2; 19. Rotating block; 20. Clamp; 21. Support arm; 22. U-shaped plate; 23. Electric heating wire; 24. Upper cover; 25. Bottom plate; 26. Sleeve; 27. Connecting rod; 28. Spring. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0041] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0043] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0044] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or still includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0045] Embodiment 1:

[0046] See also Figure 1 - Figure 6 As shown, this embodiment provides a BOPP film stretching device, comprising:

[0047] A base 1, a support plate 2 is fixed on the upper surface of the base 1, a roller 3 is rotatably arranged on the front side wall of the support plate 2, a limiting disc 4 is arranged at the front end of the roller 3, a knob 5 threadably matched with the roller 3 is arranged on the outer side of the limiting disc 4, the limiting disc 4 is fixed to the front end of the roller 3 through the knob 5, a motor 6 is fixed to the rear side wall of the base 1, the output shaft of the motor 6 passes through the outer wall of the support plate 2 and is coaxially connected with the roller 3, and a pressing plate 14 is arranged directly above the roller 3;

[0048] A lifting assembly, which is located on the base 1 and is used to control the height of the pressing plate 14 in the vertical direction;

[0049] Two support rods 16, the two support rods 16 are symmetrically arranged, and the two support rods 16 are fixedly installed on the upper surface of the base 1 near the right side of the support plate 2, and a roller 17 and a roller 2 18 are rotatably installed between the two support rods 16;

[0050] Anti-deflection components, two anti-deflection components are rotatably mounted on the inner sides of the corresponding support rods 16, and are used to prevent the BOPP film from deflecting during the stretching and winding process;

[0051] The de-wrinkle assembly is installed on the upper surface of the base 1 at the right side of the two support rods 16 and is used to de-wrinkle the BOPP film.

[0052] When the device is in use, one end of the BOPP film is first passed through between the U-shaped plate 22 and the bottom plate 25 on the wrinkle removal component, and then the BOPP film passes under the roller 18 and then passes between the two anti-deflection components, and then the BOPP film goes around the upper roller 17 and is wound on the winding roller 3; the motor 16, the lifting component and the plurality of electric heating wires 23 in the wrinkle removal component are started, and at this time, the output shaft of the motor 16 rotates and drives the BOPP film to be stretched and wound. During the stretching and winding process of the BOPP film, as the BOPP film roll on the winding roller 3 is wound straight, The diameter of the BOPP film increases, and the pressing plate 14 continuously moves upward under the action of the lifting component, and the lower surface of the pressing plate 14 is always in contact with the upper surface of the BOPP film to ensure that the BOPP film will not be wrinkled when it is rolled up; when the BOPP film passes through the de-wrinkling component, the de-wrinkling component heats the BOPP film to de-wrinkle it before stretching, and under the action of roller 17, roller 2 18 and roller 3, the BOPP film is continuously stretched and rolled up. After the rolling is completed, the operator turns the knob 5, removes the limiting disc 4, and then removes the BOPP film coil from the roller 3.

[0053] By setting a wrinkle removal component, the wrinkles on the surface of the BOPP film after forming are flattened by the wrinkle removal component, and then the roller 17 and the roller 2 18 are used to reversingly stretch it, and the motor 1 6 is used to drive the roller 3 to rotate and drive the BOPP film to be rolled up, so that after the BOPP film is finally formed into a roll, the surface of the roll is wrinkle-free and regular, and by setting an anti-deflection component, the two anti-deflection components are used to correct the BOPP film in the direction of movement between the roller 17 and the roller 2 18, so as to avoid the BOPP film from being deflected during the stretching process, further ensure that the BOPP film will not be deflected or rolled when being rolled up, and improve the quality of the final BOPP film roll.

[0054] Embodiment 2:

[0055] This embodiment provides a BOPP film stretching device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the lifting component includes:

[0056] The lifting groove 7 is provided on the support plate 2, a threaded rod 8 is rotatably installed in the lifting groove 7, and the top end of the threaded rod 8 passes through the inner top surface of the lifting groove 7 and extends upward, the top end of the threaded rod 8 is coaxially connected with a bevel gear 1 9, and the circumferential side of the bevel gear 1 9 is meshedly connected with a bevel gear 2 10, a motor 2 11 is fixedly installed on the top of the support plate 2, and the output shaft of the motor 2 11 is coaxially connected with the bevel gear 2 10, an inverted L-shaped slider 13 is slidably connected in the lifting groove 7, and the slider 13 is threadedly connected to the threaded rod 8, and the bottom end of the slider 13 is fixed to the upper surface of the pressure plate 14.

[0057] When the lifting assembly is working, the motor 2 11 is started, the output shaft of the motor 2 11 drives the bevel gear 2 10 to rotate, the bevel gear 2 10 drives the bevel gear 1 9 to rotate, the bevel gear 1 9 drives the threaded rod 8 to rotate, and under the action of the thread force, the slider 13 can slide upward along the lifting slot 7, and the slider 13 drives the pressure plate 14 to continuously move upward.

[0058] By setting up a lifting component, the pressing plate 14 can be displaced in the vertical direction to ensure that the lower surface of the pressing plate 14 can always be attached to the upper surface of the BOPP film during the winding process of the BOPP film, so that the lower surface of the BOPP film can fit with the lower BOPP film, thereby avoiding wrinkles in the BOPP film during the stretching and winding process.

[0059] Embodiment 3:

[0060] This embodiment provides a BOPP film stretching device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a protective cover 12 is provided on the outer side of bevel gear 1 9 and bevel gear 2 10, and the bottom of the protective cover 12 is fixedly connected to the upper surface of the support plate 2 by bolts.

[0061] The protective cover 12 is a hollow structure with an opening at the bottom, and the protective cover 12 can completely cover the bevel gear 1 9 and the bevel gear 2 10 .

[0062] By providing the protective cover 12, the bevel gear 1 9 and the bevel gear 2 10 are prevented from being exposed to the outside world, thereby playing a good protective role for the bevel gear 1 9 and the bevel gear 2 10.

[0063] Embodiment 4:

[0064] This embodiment provides a BOPP film stretching device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: roller 1 17 and roller 2 18 are rotatably installed on the upper and lower parts of two support rods 16 respectively.

[0065] Embodiment 5:

[0066] This embodiment provides a BOPP film stretching device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the anti-deflection component includes:

[0067] The rotating block 19 is rotatably mounted on the middle part of the corresponding support rod 16 , and two symmetrically arranged clamps 20 are rotatably mounted on the inner side of the rotating block 19 , and the clamps 20 are in a C-shaped structure.

[0068] Among them, the BOPP film passes through the two clamps 20 on the rotating block 19 from bottom to top in sequence. Since the rotating block 19 is rotatably connected to the support rod 16, the clamp 20 is rotatably connected to the rotating block 19, so that the rotating block 19 and the clamp 20 can change direction following the BOPP film. The two clamps 20 block the edges of the BOPP film to prevent the BOPP film from shifting during the movement.

[0069] By setting up an anti-deflection component, the side of the BOPP film is limited by the rotating block 19 and the clamp 20 to prevent the BOPP film from deflecting during the displacement process and ensure that the BOPP film does not wrinkle due to the deflection of the BOPP film during the subsequent winding process.

[0070] Embodiment 6:

[0071] This embodiment provides a BOPP film stretching device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, except that the pleating component includes:

[0072] Two support arms 21 are symmetrically arranged, and the two support arms 21 are fixedly installed on the upper surface of the base 1 near the right side of the two support rods 16. A U-shaped plate 22 is fixedly installed between the two support arms 21, and a plurality of electric heating wires 23 are installed in the U-shaped plate 22. An upper cover 24 is fixed at the top opening of the U-shaped plate 22. A bottom plate 25 is arranged directly below the U-shaped plate 22, and the two ends of the bottom plate 25 are respectively slidably connected to the inner sides of the two support arms 21. Two symmetrically arranged sleeves 26 are arranged at the bottom of the bottom plate 25, and the bottom of the sleeve 26 is fixed to the upper surface of the base 1. A connecting rod 27 is movably inserted on the sleeve 26, and a spring 28 is sleeved on the outer side of the connecting rod 27. The two ends of the spring 28 are respectively fixed to the upper surface of the sleeve 26 and the lower surface of the bottom plate 25.

[0073] Among them, when the wrinkle removal component is working, multiple electric heating wires 23 work and generate heat. At this time, the lower surface of the U-shaped plate 22 is heated. When the BOPP film passes through the lower surface of the U-shaped plate 22, the U-shaped plate 22 can heat the BOPP film, and the hardness of the BOPP film is reduced. Because the bottom plate 25 can always fit the lower surface of the BOPP film under the action of the spring 28, the BOPP film can become flat under the extrusion of the bottom plate 25.

[0074] By setting up a wrinkle removal needle assembly, the BOPP film is heated by the electric heating wire 23, and combined with the extrusion of the bottom plate 25, the BOPP film becomes soft when heated and can be flattened more easily, and the wrinkles on the surface of the BOPP film can be smoothed.

[0075] Embodiment 7:

[0076] This embodiment provides a BOPP film stretching device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a baffle plate 15 is sleeved and fixed on one side of the roller 3 close to the support plate 2.

[0077] When the BOPP film is rolled up on the roll 3 , one end of the film at the rear side can be blocked by the blocking plate 15 .

[0078] By providing the baffle plate 15 , it is possible to prevent the BOPP film from being damaged by friction with the outer wall of the support plate 2 during the winding process.

[0079] Embodiment 8:

[0080] This embodiment provides a BOPP film stretching device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the lower surface of the pressing plate 14 is arc-shaped, and the two lower surface edges of the pressing plate 14 are smooth and rounded.

[0081] When the pressing plate 14 is pressed onto the upper surface of the BOPP film, the pressing plate 14 will not damage the surface of the BOPP film.

[0082] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A BOPP film stretching device, characterized in that: include: A base (1), a support plate (2) is fixed on the upper surface of the base (1), a roller (3) is rotatably mounted on the front side wall of the support plate (2), a limiting disc (4) is arranged at the front end of the roller (3), a knob (5) threadedly matched with the roller (3) is arranged on the outer side of the limiting disc (4), the limiting disc (4) is fixed to the front end of the roller (3) via the knob (5), a motor (6) is fixed to the rear side wall of the base (1), the output shaft of the motor (6) passes through the outer wall of the support plate (2) and is coaxially connected to the roller (3), and a pressure plate (14) is arranged directly above the roller (3); A lifting assembly, the lifting assembly being located on the base (1) and being used to control the height of the pressing plate (14) in the vertical direction; Two support rods (16), the two support rods (16) are symmetrically arranged, and the two support rods (16) are fixedly mounted on the upper surface of the base (1) near the right side of the support plate (2), and a first roller (17) and a second roller (18) are rotatably mounted between the two support rods (16); Anti-deflection components, two of which are rotatably mounted on the inner sides of corresponding support rods (16) and are used to prevent the BOPP film from deflecting during the stretching and winding process; A wrinkle removal component is installed on the upper surface of the base (1) at a position close to the right side of the two support rods (16) and is used to remove wrinkles from the BOPP film.

2. A BOPP film stretching device according to claim 1, characterized in that: The lifting assembly comprises: A lifting groove (7), wherein the lifting groove (7) is provided on the support plate (2), a threaded rod (8) is rotatably installed in the lifting groove (7), and the top end of the threaded rod (8) penetrates the inner top surface of the lifting groove (7) and extends upward, the top end of the threaded rod (8) is coaxially connected with a bevel gear 1 (9), and the peripheral side of the bevel gear 1 (9) is meshingly connected with a bevel gear 2 (10), a motor 2 (11) is fixedly installed on the top of the support plate (2), and the output shaft of the motor 2 (11) is coaxially connected with the bevel gear 2 (10), an inverted L-shaped slider (13) is slidably connected in the lifting groove (7), and the slider (13) is threadedly connected to the threaded rod (8), and the bottom end of the slider (13) is fixed to the upper surface of the pressing plate (14).

3. A BOPP film stretching device according to claim 2, characterized in that: A protective cover (12) is provided on the outer sides of the bevel gear 1 (9) and the bevel gear 2 (10), and the bottom of the protective cover (12) is fixedly connected to the upper surface of the support plate (2) by bolts.

4. A BOPP film stretching device according to claim 1, characterized in that: The first rotating roller (17) and the second rotating roller (18) are rotatably mounted on the upper and lower parts of the two supporting rods (16) respectively.

5. A BOPP film stretching device according to claim 1, characterized in that: The anti-deflection component comprises: A rotating block (19) is rotatably mounted on the middle portion of a corresponding support rod (16), and two symmetrically arranged clamps (20) are rotatably mounted on the inner side of the rotating block (19), wherein the clamps (20) are in a C-shaped structure.

6. A BOPP film stretching device according to claim 1, characterized in that: The wrinkle removal assembly comprises: Two support arms (21), the two support arms (21) are symmetrically arranged, and the two support arms (21) are fixedly mounted on the upper surface of the base (1) near the right side of the two support rods (16), a U-shaped plate (22) is fixedly mounted between the two support arms (21), a plurality of electric heating wires (23) are mounted in the U-shaped plate (22), an upper cover (24) is fixed at the top opening of the U-shaped plate (22), and a bottom plate (25) is arranged directly below the U-shaped plate (22), The two ends of the bottom plate (25) are respectively slidably connected to the inner sides of the two support arms (21); the bottom of the bottom plate (25) is provided with two symmetrically arranged sleeves (26); the bottom of the sleeves (26) is fixed to the upper surface of the base (1); a connecting rod (27) is movably inserted on the sleeve (26); a spring (28) is sleeved on the outer side of the connecting rod (27); the two ends of the spring (28) are respectively fixed to the upper surface of the sleeve (26) and the lower surface of the bottom plate (25).

7. A BOPP film stretching device according to claim 1, characterized in that: A baffle plate (15) is sleeved and fixed on one side of the winding roller (3) close to the support plate (2).

8. A BOPP film stretching device according to claim 1, characterized in that: The lower surface of the pressing plate (14) is in an arc shape, and the two lower surface edges of the pressing plate (14) are in a smooth rounded shape.

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