An stretching and shaping device and a polymer film production equipment

Abstract

This utility model belongs to the field of polymer film manufacturing technology, and particularly relates to an stretching and shaping device and polymer film production equipment. The stretching and shaping device includes: a frame structure; an stretching roller assembly rotatably mounted on the frame structure and used to support the film; and a traction roller assembly located on the frame structure and spaced apart from the stretching roller assembly. The traction roller assembly includes a drive mechanism, a first pressure roller slidably mounted along a predetermined direction and rotatably connected to the frame structure, and a second pressure roller rotatably connected to the frame structure and cooperating with the first pressure roller. One end of the film is supported on the stretching roller assembly, and the drive mechanism drives the first pressure roller to slide towards the second pressure roller to clamp the other end of the film. This utility model can reduce the intermediate transfer steps required for separate arrangements, avoid additional stress and wrinkles caused by re-biting of the film, and the stretching roller assembly and traction roller assembly are centrally mounted on the same frame structure, making the structure compact.

Description

Technical Field

[0001] This utility model belongs to the field of polymer film manufacturing technology, and particularly relates to an extension and shaping device and polymer film production equipment. Background Technology

[0002] PVB film (Polyvinyl Butyral) is a high-performance polymer interlayer film material widely used in safety laminated glass, construction, automobiles, photovoltaics and many other fields.

[0003] In traditional PVB film production, due to the mechanical function separation paradigm, the stretching roller group and the traction roller group are arranged separately. The advantage of this separate and independent layout is that the functions can be managed in separate areas and can be controlled independently by two systems, which is suitable for large and complex production lines.

[0004] However, the disadvantages are: the equipment occupies a large area, the transmission energy consumption is high, and when the membrane material is transferred between independent units, additional stress will be generated due to re-biting, which will cause problems such as wrinkles in the PVB membrane. Utility Model Content

[0005] The purpose of this application is to provide an extension and shaping device, which aims to solve the problem of how to make the structure of the extension and shaping device more compact.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] In a first aspect, an stretching and shaping apparatus is provided for shaping and conveying a film, the stretching and shaping apparatus comprising:

[0008] Frame structure;

[0009] The stretching roller assembly is rotatably mounted on the frame structure and serves to support the diaphragm; and

[0010] A traction roller group is located on the frame structure and arranged at intervals from the extension roller group. The traction roller group includes a drive mechanism, a first pressure roller that is slidably disposed in a predetermined direction and rotatably connected to the frame structure, and a second pressure roller that is rotatably connected to the frame structure and cooperates with the first pressure roller.

[0011] Wherein, one end of the film is supported by the stretching roller group, the driving mechanism is used to drive the first pressure roller to slide toward the second pressure roller to clamp the other end of the film, and the driving mechanism is also used to drive the first pressure roller and / or the second pressure roller to rotate so that the film is conveyed in a direction away from the stretching roller group.

[0012] In some embodiments, the frame structure includes two support side plates arranged opposite each other, and the two ends of the first pressure roller are rotatably connected to the two support side plates respectively, and the two ends of the first pressure roller are slidably connected to the two support side plates respectively.

[0013] In some embodiments, the frame structure further includes two guide blocks, which are slidably connected to the two support side plates in the vertical direction, and the two ends of the first pressure roller are rotatably connected to the two guide blocks.

[0014] In some embodiments, the support side plate has an clearance groove for the first pressure roller to pass through, and the traction roller group further includes two guide rails that are connected to the support side plate and arranged at intervals. The clearance groove is located between the two guide rails, and the two guide rails are slidably connected to both sides of the guide block.

[0015] In some embodiments, the stretching and shaping device includes a driving mechanism comprising a first driver connected to the frame structure and used to drive the first pressure roller to slide along the predetermined direction, and a second driver connected to the frame structure and used to drive the second pressure roller to rotate.

[0016] In some embodiments, the drive mechanism further includes an adjustment member, one end of which is connected to the first driver and the other end of which is connected to the frame structure, and the adjustment member is used to adjust the height of the first driver along the predetermined direction.

[0017] In some embodiments, the stretching roller assembly includes a bending roller and an stretching roller spaced apart from the bending roller, both the bending roller and the stretching roller being rotatably connected to the frame structure, and the film passing sequentially through the bending roller and the stretching roller.

[0018] In some embodiments, the bending roller extends along its length in an arc-shaped path.

[0019] In some embodiments, the stretching roller has a first spiral pattern and a second spiral pattern, the first spiral pattern and the second spiral pattern having opposite thread directions.

[0020] In a second aspect, a polymer film production equipment is provided, which includes the stretching and shaping device, wherein the frame structure includes a first frame and a second frame adjacent to the first frame, and the stretching roller group and the traction roller group are respectively located on the first frame and the second frame.

[0021] The beneficial effects of this application are as follows: By integrating the stretching roller group and the traction roller group into the frame structure, and then clamping the front end of the diaphragm sheet with the first and second pressure rollers of the traction roller group, while the stretching roller group supports the rear end of the diaphragm sheet, and the drive mechanism drives the first and second pressure rollers to rotate, the clamping and traction transfer of the diaphragm sheet is realized. This allows the diaphragm sheet to immediately enter the traction roller group after being flattened by the stretching roller group, reducing the intermediate transfer links required for separate arrangements and avoiding the additional stress and wrinkles caused by the diaphragm sheet being re-bited. At the same time, the stretching roller group and the traction roller group are centrally installed on the same frame structure, making the device structure compact and occupying less space. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the stretching and shaping device provided in the embodiments of this application;

[0024] Figure 2 yes Figure 1 A side view of the stretching and shaping device;

[0025] Figure 3 yes Figure 1 A three-dimensional structural diagram of the traction roller assembly of the stretching and shaping device;

[0026] Figure 4 yes Figure 1 A three-dimensional structural diagram of the stretching roller assembly of the stretching and shaping device.

[0027] The following are the labeling elements in the figure:

[0028] 100. Stretching and shaping device; 10. Frame structure; 11. First frame; 12. Second frame; 20. Stretching roller group; 22. Stretching roller; 21. Bending roller; 30. Traction roller group; 31. First pressure roller; 32. Second pressure roller; 33. Drive mechanism; 331. First driver; 332. Second driver; 34. Support side plate; 35. Adjusting component; 37. Guide block; 36. Guide rail; 341. Clearance groove; 371. Slide groove; 121. Second fixing frame; 122. Second longitudinal beam; 123. Threaded hole; 111. First fixing frame; 112. First longitudinal beam; 221. First spiral pattern; 222. Second spiral pattern. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0031] Please see Figures 1 to 3 This application provides an extension and shaping device 100 and a polymer film production equipment having the same. The extension and shaping device 100 is used to shape and convey a film, wherein the film can be a PVB film. PVB film is a polymer material film made by the condensation reaction of polyvinyl alcohol and butyraldehyde. It has high transparency, excellent toughness and adhesion, and can be firmly bonded to glass. Even if the glass breaks, the fragments can be adhered to the film to prevent splashing. It has good weather resistance and UV resistance, can block most ultraviolet rays and maintain stable optical performance, and also has good sound insulation effect.

[0032] Please see Figures 1 to 3 The stretching and shaping device 100 is used for shaping and conveying the film. The stretching and shaping device 100 includes: a frame structure 10, an stretching roller group 20, and a traction roller group 30.

[0033] Please see Figures 1 to 3 The frame structure 10 is fixedly installed on the ground and is used for the installation of the extension roller group 20 and the traction roller group 30.

[0034] The stretching roller group 20 is rotatably mounted on the frame structure 10 and is used to support the film. It can be understood that the stretching roller group 20 receives the film from the previous process and conveys the film to the traction roller group 30. When the film passes through the stretching roller group 20, the film can be well flattened.

[0035] Along the conveying direction of the film, the traction roller group 30 is located behind the stretching roller group 20. The traction roller group 30 is located on the frame structure 10 and spaced apart from the stretching roller group 20. The traction roller group 30 includes a drive mechanism 33, a first pressure roller 31 slidably disposed in a predetermined direction and rotatably connected to the frame structure 10, and a second pressure roller 32 rotatably connected to the frame structure 10 and cooperating with the first pressure roller 31; in this embodiment, the predetermined direction is the vertical direction, which can be represented as Z. The first pressure roller 31 is located above the second pressure roller 32, and the first pressure roller 31 can rise or fall relative to the second pressure roller 32.

[0036] Please see Figures 1 to 3 One end of the diaphragm is supported by the stretching roller group 20. The driving mechanism 33 drives the first pressure roller 31 to slide toward the second pressure roller 32 to clamp the other end of the diaphragm. The driving mechanism 33 also drives the first pressure roller 31 and / or the second pressure roller 32 to rotate, so that the diaphragm is conveyed in a direction away from the stretching roller group 20. For example, the driving mechanism 33 drives the first pressure roller 31 to rotate, and at the same time, due to friction, the second pressure roller 32 can rotate with the first pressure roller 31. Alternatively, the driving mechanism 33 drives the second pressure roller 32 to rotate, while the first pressure roller 31 presses the diaphragm downward in the vertical direction. Due to friction, the first pressure roller 31 rotates with the second pressure roller 32, and at the same time, the diaphragm can be clamped and pulled forward by the first pressure roller 31 and the second pressure roller 32.

[0037] Please see Figures 1 to 3 This embodiment integrates an extension roller group 20 and a traction roller group 30 into the frame structure 10. The first pressure roller 31 and the second pressure roller 32 of the traction roller group 30 clamp the front end of the film, while the extension roller group 20 supports the rear end of the film. The drive mechanism 33 drives the first pressure roller 31 and the second pressure roller 32 to rotate, thereby realizing the clamping and traction transfer of the film. This allows the film to immediately enter the traction roller group 30 after being flattened by the extension roller group 20, reducing the intermediate transfer steps required for separate arrangements and avoiding additional stress and wrinkles caused by the film being re-bited. At the same time, the extension roller group 20 and the traction roller group 30 are centrally mounted on the same frame structure 10, making the device structure compact and occupying less space.

[0038] Please see Figures 1 to 3 In some embodiments, the frame structure 10 includes two support side plates 34 arranged opposite each other, and the two ends of the first pressure roller 31 are rotatably connected to the two support side plates 34 respectively, and the two ends of the first pressure roller 31 are slidably connected to the two support side plates 34 respectively.

[0039] Optionally, by setting relatively arranged support side plates 34, the two ends of the first pressure roller 31 can be rotatably connected to the support side plates 34 and can also be slidably connected in the vertical direction. This ensures that the first pressure roller 31 and the second pressure roller 32 have stable rotational support when clamping the film, and can also smoothly adjust their positions to adapt to films of different thicknesses or tensions. This provides uniform clamping pressure during the traction process of the film, avoids local stress concentration on the film surface, and improves the film shaping quality and dimensional stability.

[0040] Please see Figures 1 to 3 In some embodiments, the frame structure 10 further includes two guide blocks 37, which are slidably connected to the two support side plates 34 in the vertical direction, and the two ends of the first pressure roller 31 are rotatably connected to the two guide blocks 37.

[0041] Optionally, a guide block 37 is provided in the frame structure 10, which slides vertically to connect the support side plate 34. The guide block 37 is rotatably connected to both ends of the first pressure roller 31, enabling smooth linear lifting and lowering adjustment of the first pressure roller 31. This allows the first pressure roller 31 to rotate with the second pressure roller 32, ensuring that the clamping gap and pressure of the first and second pressure rollers 31 match films of different thicknesses and elongation states. This ensures stable and consistent traction tension, reduces film deviation and wrinkling, and improves product qualification rate. It is understood that bearings are provided on the guide block 37, and the inner rings of the two bearings are connected to both ends of the first pressure roller 31.

[0042] Please see Figures 1 to 3 In some embodiments, the support side plate 34 is provided with a clearance groove 341 for the first pressure roller 31 to pass through. The traction roller group 30 also includes two guide rails 36 that are connected to the support side plate 34 and arranged at intervals. The clearance groove 341 is located between the two guide rails 36. The two guide rails 36 are slidably connected to both sides of the guide block 37.

[0043] Optionally, by cooperating with the guide block 37 and the guide rail 36, the guiding accuracy and smoothness of the first pressure roller 31 during the lifting process can be improved, avoiding uneven force on the diaphragm caused by positional deviation, thereby ensuring consistent tension distribution of the diaphragm during traction and maintaining the flatness and optical uniformity of the diaphragm surface.

[0044] Please see Figures 1 to 3 In some embodiments, the drive mechanism 33 includes a first driver 331 connected to the frame structure 10 and used to drive the first pressure roller 31 to slide along the predetermined direction, and a second driver 332 connected to the frame structure 10 and used to drive the second pressure roller 32 to rotate.

[0045] Optionally, the first driver 331 is a cylinder, which is fixed on the frame structure 10, and the piston rod of the cylinder is connected to the first pressure roller 31. The cylinder can provide a stable and controllable linear thrust. It has a simple structure and fast response speed, and can realize the rapid clamping and releasing operation of the first pressure roller 31 relative to the second pressure roller 32. This avoids the diaphragm deviation or tension fluctuation caused by transmission delay. At the same time, the output force of the cylinder can be easily controlled by adjusting the air pressure, adapting to diaphragms of different thicknesses and hardness, ensuring uniform clamping pressure, reducing diaphragm material damage, and is easy to maintain and has low cost. It is suitable for long-term reliable operation in continuous production environments.

[0046] Please see Figures 1 to 3 The second driver 332 is a servo motor, which is also fixed to the frame structure 10. The servo motor has high-precision speed and position control capabilities, and can accurately adjust the traction speed according to process requirements, thereby achieving stable control of the membrane tension and avoiding wrinkling or uneven stretching of the membrane surface caused by speed fluctuations. At the same time, the servo motor has fast response and stable torque output, and can maintain smooth operation during start-up, acceleration and deceleration, reducing instantaneous impact on the membrane material. In addition, the servo system has good programmability and automation integration capabilities, which facilitates linkage with the whole machine control system to achieve intelligent and highly consistent production process.

[0047] The drive mechanism 33 can not only independently adjust the diaphragm clamping position and traction speed, but also flexibly configure operating parameters according to different stretching process requirements, thereby improving traction stability, reducing the risk of diaphragm surface damage, and ensuring stretching and shaping effect.

[0048] Please see Figures 1 to 3 In some embodiments, the drive mechanism 33 further includes an adjustment member 35, one end of which is connected to the first driver 331 and the other end of which is connected to the frame structure 10. The adjustment member 35 is used to adjust the height of the first driver 331 along the predetermined direction.

[0049] Please see Figures 1 to 3 Optionally, the frame structure 10 is provided with a threaded hole 123, and the adjusting component 35 is an adjusting bolt. The length direction of the adjusting bolt is arranged in the vertical direction. The upper end of the adjusting bolt is screwed into the threaded hole 123 and fixed with the assistance of a nut. The lower end of the adjusting bolt is connected to the first driver 331. By changing the connection position between the adjusting bolt and the frame structure 10, the height of the first driver 331 is adjusted, so that the first pressure roller 31 and the second pressure roller 32 can be adapted to diaphragms of different thicknesses, ensuring that the clamping force is always in the optimal range, improving the traction tension control accuracy and product consistency, while avoiding the maintenance complexity caused by frequent replacement of parts, and increasing the application range of the device.

[0050] Optionally, two first drivers 331 and two adjusting members 35 are provided. The two first drivers 331 are respectively connected to the two ends of the first pressure roller 31. The two first drivers 331 cause the first pressure roller 31 to rise or fall as a whole. The two adjusting members 35 are respectively used to adjust the height of the two first drivers 331.

[0051] Please see Figure 1 , Figure 2 and Figure 4 In some embodiments, the stretching roller group 20 includes a bending roller 21 and an stretching roller 22 spaced apart from the bending roller 21. Both the bending roller 21 and the stretching roller 22 are rotatably connected to the frame structure 10, and the film passes through the bending roller 21 and the stretching roller 22 in sequence.

[0052] Please see Figure 1 , Figure 2 and Figure 4 Optionally, the diaphragm passes through the bending roller 21 and the stretching roller 22 in sequence, thereby flattening the diaphragm and preventing wrinkles, thus effectively releasing longitudinal and transverse stress, reducing wrinkles and ripples on the diaphragm surface, and improving stretching uniformity and final optical performance.

[0053] Please see Figure 1 , Figure 2 and Figure 4 In some embodiments, the extension path of the bending roller 21 along its length is an arc. That is, when the rotation center line of the bending roller 21 is arranged horizontally, during rotation, the height of both ends of the bending roller 21 is lower than the height of the center position, or the height of both ends of the bending roller 21 is higher than the height of the center position. This allows for active compensation of lateral tension using the arc-shaped structure of the bending roller 21, enabling the film to automatically flatten during stretching and allowing for controllable bending deformation of the film during operation. Stress compensation is achieved using the principle of material elastic deformation, effectively eliminating stress concentration areas during stretching, balancing the lateral tension of the film surface, improving stretching flatness and film surface quality, and is particularly beneficial in preventing edge curling of wide films during high-speed production.

[0054] Please see Figure 1 , Figure 2 and Figure 4 In some embodiments, the stretching roller 22 is provided with a first spiral pattern 221 and a second spiral pattern 222, the first spiral pattern 221 and the second spiral pattern 222 having opposite thread directions, for example, the first spiral pattern 221 is a left spiral and the second spiral pattern 222 is a right spiral.

[0055] Optionally, the surface of the stretching roller 22 is provided with a first spiral pattern 221 and a second spiral pattern 222 with opposite directions of rotation. This can generate bidirectional radial shear force when the film passes through, and stretch the middle and edge of the film simultaneously, avoiding film deformation and wrinkles caused by unidirectional stretching. At the same time, the spiral structure can also effectively remove trapped air, reduce the risk of air bubbles generated during subsequent lamination, and improve the flatness and transparency of the film.

[0056] Please see Figures 1 to 3 The frame structure 10 includes a first frame 11 and a second frame 12 adjacent to the first frame 11, and the extension roller group 20 and the traction roller group 30 are located in the first frame 11 and the second frame 12, respectively.

[0057] Optionally, the first frame 11 includes two opposing first fixed frames 111 and a plurality of first longitudinal beams 112, with each end of the first longitudinal beam 112 connected to the two first fixed frames 111 respectively. The two ends of the bending roller 21 and the stretching roller 22 are rotatably connected to the two first fixed frames 111 respectively.

[0058] The second frame 12 includes two opposing second fixed frames 121 and a plurality of second longitudinal beams 122, with each end of the second longitudinal beam 122 connected to the two second fixed frames 121 respectively. Two support side plates 34 are respectively connected to the two second fixed frames 121, and each of the two second fixed frames 121 is provided with a threaded hole 123, and the upper ends of the two adjusting members 35 are respectively connected to the two second fixed frames 121.

[0059] Please see Figure 1 , Figure 2 and Figure 4 Optionally, the stretching roller group 20 and the traction roller group 30 are respectively arranged in the adjacent first frame 11 and second frame 12 to realize the modular layout of the stretching and traction functions. This allows the two functions to cooperate efficiently and facilitate independent debugging and maintenance, reducing the downtime of the whole machine. At the same time, it keeps the conveying path of the film after stretching and shaping short and stable, reduces stress accumulation, and improves production efficiency and finished product qualification rate.

[0060] This utility model also proposes a polymer film production equipment, which includes an stretching and shaping device 100. The specific structure of the stretching and shaping device 100 is as described in the above embodiments. Since this polymer film production equipment adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0061] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A stent forming device for shaping and delivering a membrane, characterized by, The stretching and shaping device includes: Frame structure; The stretching roller assembly is rotatably mounted on the frame structure and serves to support the diaphragm; and A traction roller group is located on the frame structure and arranged at intervals from the extension roller group. The traction roller group includes a drive mechanism, a first pressure roller that is slidably disposed in a predetermined direction and rotatably connected to the frame structure, and a second pressure roller that is rotatably connected to the frame structure and cooperates with the first pressure roller. Wherein, one end of the film is supported by the stretching roller group, the driving mechanism is used to drive the first pressure roller to slide toward the second pressure roller to clamp the other end of the film, and the driving mechanism is also used to drive the first pressure roller and / or the second pressure roller to rotate so that the film is conveyed in a direction away from the stretching roller group.

2. The stretch-draw apparatus of claim 1, wherein: The frame structure includes two support side plates arranged opposite each other. The two ends of the first pressure roller are rotatably connected to the two support side plates, and the two ends of the first pressure roller are slidably connected to the two support side plates.

3. The stretch-draw apparatus of claim 2, wherein: The frame structure also includes two guide blocks, which are slidably connected to the two support side plates in the vertical direction, and the two ends of the first pressure roller are rotatably connected to the two guide blocks.

4. The stretch-draw apparatus of claim 3, wherein: The supporting side plate has a clearance groove for the first pressure roller to pass through. The traction roller group also includes two guide rails that are connected to the supporting side plate and arranged at intervals. The clearance groove is located between the two guide rails. The two guide rails are slidably connected to both sides of the guide block.

5. A stretch-forming apparatus as claimed in any one of claims 1 to 4, wherein: The driving mechanism includes a first driver connected to the frame structure and used to drive the first pressure roller to slide along the predetermined direction, and a second driver connected to the frame structure and used to drive the second pressure roller to rotate.

6. The stretch-draw apparatus of claim 5, wherein: The drive mechanism further includes an adjusting member, one end of which is connected to the first driver and the other end of which is connected to the frame structure. The adjusting member is used to adjust the height of the first driver along the predetermined direction.

7. A stretch-forming apparatus as claimed in any one of claims 1 to 4, wherein: The stretching roller assembly includes a bending roller and an stretching roller spaced apart from the bending roller. Both the bending roller and the stretching roller are rotatably connected to the frame structure, and the film passes through the bending roller and the stretching roller in sequence.

8. The stretch-draw apparatus of claim 7, wherein: The bending roller extends along its length in an arc.

9. The stretch-drawing apparatus of claim 7, wherein: The stretching roller has a first spiral pattern and a second spiral pattern, and the first spiral pattern and the second spiral pattern have opposite spiral directions.

10. A polymer membrane production equipment, characterized in that, The device includes the stretching and shaping apparatus as described in any one of claims 1-9, wherein the frame structure includes a first frame and a second frame adjacent to the first frame, and the stretching roller group and the traction roller group are located on the first frame and the second frame, respectively.

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