Auxiliary drafting device for thin film material
Through the modular design and thread-driven film material auxiliary drafting device, the pollution and uneven tension problems of film material drafting in strong corrosion solutions are solved, and stable stretching and adaptability to multiple materials are achieved in a strong corrosion environment. .
Patent Information
- Application Number
- CN202310810650.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-04
- Publication Date
- 2025-01-07
AI Technical Summary
The existing film material drafting devices are prone to corrosion when used in a highly corrosive solution environment, resulting in material contamination and uneven tension, and the drafting treatment of film materials cannot be effectively carried out.
A film material assisted drafting device is designed, adopting a modular composition and a detachable base to achieve stable tensile operation through threaded transmission and guide components to ensure uniform tension and maintain stable material tension in different solutions and environments.
It achieves uniform and stable stretching of film materials in strong corrosion solutions, reduces the impact of the material under different environments, improves the treatment effect and the stability of the device, and is suitable for a variety of film materials and experimental environments.
Smart Images
Figure CN119262939A_ABST
Abstract
Description
Technical Field
[0001] The invention particularly relates to an auxiliary stretching device for film materials, and belongs to the technical field of film material stretching. Background Art
[0002] Thin film materials are often processed in laboratories and during material production, including compression, impregnation, stretching and other treatments of thin film materials. It is often necessary to apply a certain force to the thin film material in a specific solution to stretch it in order to achieve a better treatment effect. However, when it comes to highly corrosive solutions such as strong acids or alkalis, there will be many inconveniences during the experimental operation. For example, when stretching in a strongly corrosive solution, the solution may corrode ordinary stretching devices, causing material contamination, or in a strongly corrosive solution environment, the material is affected by the solution, resulting in uneven tension and other problems, resulting in poor material treatment effects; most of the thin film material stretching devices currently used in laboratories are unable to stretch the material in a strongly corrosive solution environment, or the stretching devices in a strongly corrosive solution environment are mostly closed or semi-closed devices. Summary of the invention
[0003] The main purpose of the present invention is to provide a film material auxiliary stretching device to overcome the deficiencies in the prior art.
[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes:
[0005] The present invention provides a film material auxiliary stretching device, comprising:
[0006] A first film fixing assembly and a second film fixing assembly, the first film fixing assembly and the second film fixing assembly are spaced apart along a first direction, the first film fixing assembly comprises a first connecting bracket and a first base, the first connecting bracket is detachably fixedly combined with the first base, the second film fixing assembly comprises a second connecting bracket and a second base, the first connecting bracket is detachably fixedly combined with the first base, and a film fixing mechanism is disposed on both the first base and the second base;
[0007] The guide component extends as a whole along the first direction. The first film fixing component and / or the second film fixing component are movably cooperated with the guide component and can be driven by an external force to move along the guide component, so that the distance between the first film fixing component and the second film fixing component changes, thereby causing the film material connected to the first film fixing component and the second film fixing component to be stretched along the first direction.
[0008] Compared with the prior art, the advantages of the present invention include:
[0009] 1) The components of the film material auxiliary stretching device provided by the present invention are modularly arranged, and the stretching effect is achieved by slowly rotating through a screw transmission, so that the device is stable as a whole, and no excessive shaking occurs during the stretching operation, thereby ensuring stable tension and uniform force during the stretching process.
[0010] 2) The base of the film material auxiliary stretching device provided by the present invention adopts a detachable structure, so as to better maintain the film material with a certain tension to reduce the impact when switching between different solutions or different environments, and also give the material a certain tension to reduce deformation when drying or baking. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of a film material auxiliary stretching device provided in a typical implementation case of the present invention;
[0012] Figure 2 It is a front view of a film material auxiliary stretching device provided in a typical embodiment of the present invention;
[0013] Figure 3 It is a left view of a film material auxiliary stretching device provided in a typical embodiment of the present invention;
[0014] Figure 4 It is a top view of a film material auxiliary stretching device provided in a typical implementation case of the present invention. DETAILED DESCRIPTION
[0015] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.
[0016] The present invention provides a film material auxiliary stretching device, comprising:
[0017] A first film fixing assembly and a second film fixing assembly, the first film fixing assembly and the second film fixing assembly are spaced apart along a first direction, the first film fixing assembly comprises a first connecting bracket and a first base, the first connecting bracket is detachably fixedly combined with the first base, the second film fixing assembly comprises a second connecting bracket and a second base, the first connecting bracket is detachably fixedly combined with the first base, and a film fixing mechanism is disposed on both the first base and the second base;
[0018] The guide component extends as a whole along the first direction. The first film fixing component and / or the second film fixing component are movably cooperated with the guide component and can be driven by an external force to move along the guide component, so that the distance between the first film fixing component and the second film fixing component changes, thereby causing the film material connected to the first film fixing component and the second film fixing component to be stretched along the first direction.
[0019] Furthermore, the first film fixing component is fixedly matched with the guide component, and the second film fixing component is movably matched with the guide component.
[0020] Furthermore, the guide assembly includes a first guide assembly and a second guide assembly spaced apart along a second direction, the first connecting bracket and the second connecting bracket cooperate with the first guide assembly, and the first base and the second base cooperate with the first guide assembly.
[0021] Furthermore, the first connecting bracket is fixedly matched with the first guide assembly, the second connecting bracket is movably matched with the first guide assembly, the first base is fixedly matched with the second guide assembly, and the second base is movably matched with the second guide assembly.
[0022] Furthermore, the first guide assembly and the second guide assembly both include a guide rod extending along the first direction, and the second connecting bracket and the second base cooperate with the guide rod in a sliding manner.
[0023] Furthermore, the film material auxiliary stretching device also includes: a screw assembly, the screw assembly includes a screw and a screw nut threadedly arranged on the screw, the screw extends along the first direction, the screw can rotate around its own axis under the drive of external force, the first connecting bracket and / or the first base is movably matched with the screw, and the second connecting bracket and / or the second base is fixedly matched with the screw nut; when the screw rotates around its own axis, the second film fixing assembly and the screw nut move synchronously along the screw.
[0024] Furthermore, the screw assembly includes a first screw assembly and a second screw assembly arranged in parallel, the first screw assembly and the second screw assembly are spaced apart along the second direction, the first screw assembly includes a first screw and a first screw nut, the second screw assembly includes a second screw and a second screw nut, the first connecting bracket is movably matched with the first screw, the first base is movably matched with the second screw, the second connecting bracket is fixedly connected to the first screw nut, and the second base is fixedly connected to the second screw nut.
[0025] Furthermore, the film material auxiliary stretching device also includes: a stroke limiting frame, which is fixedly matched with the guide assembly, and the stroke limiting frame is arranged along the first direction on the side of the second film fixing assembly facing away from the first film fixing assembly, and the second film fixing assembly is restricted from moving between the first film fixing assembly and the limiting frame along the first direction.
[0026] Furthermore, the first connecting bracket and the first base are detachably fixedly combined by means of mortise and tenon connection, interference fit, threaded connection or adsorption connection.
[0027] Furthermore, the second connecting bracket and the second base are detachably fixedly combined by means of mortise and tenon connection, interference fit, threaded connection or adsorption connection.
[0028] Furthermore, at least one slit through which the film material can pass is provided on the first base and the second base, and the slit penetrates the first base or the second base along the first direction.
[0029] Furthermore, a plurality of the slits are provided on the first base and the second base, and the plurality of the slits are arranged sequentially along the second direction. Parts of the film material are arranged sequentially in the plurality of the slits to form a maze structure, and are fixed to the first base and the second base along the first direction.
[0030] Furthermore, the film fixing mechanism is arranged on the first base and the second base, and the film material can be fixedly clamped between the film fixing mechanism and the first base or the second base.
[0031] Furthermore, the film fixing mechanism cooperates with the first base or the second base through a magnetic component, and the magnetic component includes a first magnet and a second magnet. The first magnet is fixed on the film fixing mechanism, and the second magnet is fixed on the first base or the second base. The film fixing mechanism is magnetically adsorbed to the first base or the second base to fix the film material between the film fixing mechanism and the first base or the second base.
[0032] Furthermore, the film fixing mechanism is rotatably connected to the first base or the second base, and the film fixing mechanism is also connected to the first base or the second base via an elastic component, and the elastic component provides elastic force to press the film fixing mechanism onto the first base or the second base, thereby fixing the film material between the film fixing mechanism and the first base or the second base.
[0033] Furthermore, the first film fixing component, the second film fixing component, the film fixing mechanism and the guide component are all polytetrafluoroethylene components.
[0034] Furthermore, the film material auxiliary stretching device is entirely made of polytetrafluoroethylene.
[0035] The technical solution, its implementation process and principles will be further explained below in conjunction with the accompanying drawings and specific implementation cases. Unless otherwise specified, the motors, cylinders, screw assemblies and other components used in the embodiments of the present invention can be obtained commercially, or obtained by processing the commercially available components through existing processes known to those skilled in the art.
[0036] As used herein, the term "including" and its variations represent open terms, meaning "including but not limited to". The terms "based on", "according to", etc. mean "based at least in part on", "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other definitions may be included below, whether explicit or implicit. Unless the context clearly indicates otherwise, the definition of a term is consistent throughout the specification.
[0037] The invention discloses a film material auxiliary stretching device, which can be used for stretching the film material in a strong corrosive solution, so that the film material can be stretched uniformly and stably in the strong corrosive solution, and can ensure that the material tension is relatively stable during the whole experimental process.
[0038] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The film material auxiliary stretching device includes a first film fixing component 10, a second film fixing component 20, a guide component 30 and a driving mechanism 70. The first film fixing component 10 and the second film fixing component 20 are both provided with film fixing mechanisms. The guide component 30 extends along a first direction. The first film fixing component 10 and the second film fixing component 20 are spaced apart on the guide component 30 along the first direction. The first film fixing component 10 is fixedly matched with the guide component 30, and the second film fixing component 20 is movably matched with the guide component 30. The second film fixing component 20 is transmission matched with the driving mechanism 70 and can move along the guide component 30 under the drive of the driving mechanism 70, thereby changing the spacing between the first film fixing component 10 and the second film fixing component 20 along the first direction, thereby causing the film material 100 connected to the first film fixing component 10 and the second film fixing component 20 to be stretched along the first direction.
[0039] In this embodiment, the guide assembly 30 includes a plurality of guide rods ( Figure 1 Two guide rods are shown in the figure), the guide assembly 30 mainly provides movement guidance for the second film fixing assembly 20, that is, the guide rod can be understood as a guide rail, the first film fixing assembly 10 is fixedly connected to the guide rod, and the second film fixing assembly 20 is movably matched with the guide rod. Specifically, the second film fixing assembly 20 can be movably matched with the guide rod by sliding fit. For example, a slide rail is provided on the guide rod, and a slider is provided on the slide rail. The second film fixing assembly 20 is fixed to the slider and moves along the slide rail together with the slider. Alternatively, a guide hole is provided on the second film fixing assembly 20, and the guide rod is coaxially arranged in the guide hole. The guide rod and the inner wall of the guide hole can be in sliding contact or clearance fit, but the width of the clearance cannot be too large, and must be sufficient to ensure that the second film fixing assembly 20 moves linearly along the guide rod.
[0040] In this embodiment, the first film fixing assembly 10 includes a first connecting bracket 11 and a first base 12, and the first connecting bracket 11 and the first base 12 are detachably fixedly combined. The second film fixing assembly 20 includes a second connecting bracket 21 and a second base 22, and the first connecting bracket 11 and the first base 12 are detachably fixedly combined. The film fixing mechanism is arranged on the first base 12 and the second base 22. Specifically, the first connecting bracket 11 is fixedly connected to the guide rod, and the second connecting bracket 21 is movably matched with the guide rod.
[0041] It should be noted that, of course, additional guide rods can be provided to cooperate with the first base 12 and the second base 22. Specifically, the first base 12 needs to be fixedly connected to the guide rod, and the second base 22 needs to be flexibly cooperated with the guide rod. The cooperation structure and method of the second bottom and the guide rod can refer to the cooperation structure and method of the second connecting bracket 21 and the guide rod. It can be understood that making the second connecting bracket 21 and the second support flexibly cooperate with the corresponding guide rod respectively can play a better motion guiding role for the second film fixing assembly 20, and avoid the displacement difference between the various parts of the second film fixing assembly 20 when it is driven by the driving mechanism 70, so that the tensile tension applied to the film material 100 can be distributed more stably and evenly, thereby improving the stretching effect and quality of the film material 100.
[0042] In this embodiment, please refer to Figure 1The film material auxiliary stretching device also includes a stroke limiting frame 40, which is fixed on the guide rod, and the stroke limiting frame 40 is arranged along the first direction on the side of the second film fixing component 20 facing away from the first film fixing component 10, that is, the second film fixing component 20 is arranged along the guide rod between the stroke limiting frame 40 and the first film fixing component 10. It can be understood that the stroke limiting frame 40 can limit the maximum stroke of the second film fixing component 20, so that the second film fixing component 20 is restricted to move between the first film fixing component 10 and the limiting frame.
[0043] It should be noted that the structures of the first film fixing component 10 and the second film fixing component 20 can be basically the same. Taking the second film fixing component 20 as an example, the structure of the second connecting bracket 21 and the second base 22 included therein and the structure / method of their connection and coordination are explained below. Those skilled in the art can understand the structure of the first film fixing component 10 without any objection.
[0044] In this embodiment, the second connecting bracket 21 and the second base 22 can be detachably fixedly combined by mortise and tenon connection, interference fit, threaded connection or adsorption connection. As mentioned above, a film fixing mechanism is provided on the second base 22 and is used to fix the film material 100. The detachable base can make the film material 100 have a certain tension in different solution environments and in the drying and airing processes to maintain the state of the film material 100 stable. At the same time, different bases can also be replaced to adapt to the stretching operation of film materials 100 of different sizes and materials in different corrosive solution environments and different temperature environments.
[0045] In this embodiment, the second base 22 is further provided with at least one slit through which the film material 100 can pass (the corresponding slit on the first base 12 is Figure 2 110)220 in the figure, the slit passes through the second base 22 along the first direction and is fixed by the film fixing mechanism. Of course, a plurality of slits 220 can be provided on the second base 22, and the plurality of slits 220 are arranged in sequence along the second direction. Parts of the film material 100 are arranged in sequence in the plurality of slits 220 to form a maze structure, and are preliminarily fixed to the second base 22 along the first direction. It should be noted that the slit 220 is arranged through the side wall of the second base 22.
[0046] In this embodiment, the film fixing mechanism is arranged on the first base 12 and the second base 22, and the film material 100 can be fixedly clamped between the film fixing mechanism and the first base 12 or the second base 22. It should be noted that the film fixing mechanism cooperates with the first base 12 or the second base 22 to achieve the fixing and release of the film material.
[0047] In a specific embodiment, the film fixing mechanism is detachably fixedly matched with the first base 12 or the second base 22 by magnetic adsorption, and the film material is fixedly clamped between the film fixing mechanism and the first base 12 or the second base 22. Specifically, the film fixing mechanism can be matched with the first base 12 or the second base 22 via a magnetic component, and the magnetic component includes a first magnet and a second magnet. The first magnet is fixed on the film fixing mechanism, and the second magnet is fixed on the first base 12 or the second base 22. The film fixing mechanism is magnetically adsorbed to the first base 12 or the second base 22, and the film material 100 is fixed between the film fixing mechanism and the first base 12 or the second base 22. Exemplarily, the first magnet and the second magnet can be permanent magnets or electromagnets, etc.
[0048] In another specific embodiment, the film fixing mechanism is rotatably connected to the first base 12 or the second base 22 via a rotating shaft, the film fixing mechanism can rotate around the rotating shaft, and the film fixing mechanism is also connected to the first base 12 or the second base 22 via an elastic component, and the elastic force provided by the elastic component presses the film fixing mechanism onto the first base 12 or the second base 22, thereby fixing the film material 100 between the film fixing mechanism and the first base 12 or the second base 22.
[0049] In this embodiment, a groove-shaped structure is further provided on the first base 12 or the second base 22 , and the film fixing mechanism is provided in the groove-shaped structure or in the peripheral area of the groove-shaped structure.
[0050] In this embodiment, the film fixing mechanism can be arranged on the side and bottom end faces of the first base 12 or the second base 22. Through the above structure, the film fixing mechanism is matched with the first base 12 or the second base 22, so as to realize the fixation of film materials of various sizes and materials. For example, the film fixing mechanism is matched with the first base 12 or the second base 22 to fix materials with a width not exceeding 50 mm and a thickness not exceeding 1 mm.
[0051] In this example, please refer again to Figure 1The film material auxiliary stretching device also includes a first screw assembly 50 and a second screw assembly 60, which are spaced apart along the second direction, the first screw assembly 50 cooperates with the first connecting bracket 11 and the second connecting bracket 21, and the second screw assembly 60 cooperates with the first base 12 and the second base 22; specifically, the first screw assembly 50 includes a first screw and a first screw nut threadedly connected to the first screw, the first screw is rotatably matched with the first connecting bracket 11, the second connecting bracket 21 is fixedly connected to the first screw nut, the second connecting bracket 21 can be fixedly connected with the first screw nut and move along the first screw, and the first screw can rotate around its own axis along the external force trend line; the second screw assembly 60 includes a second screw and a second screw nut threadedly connected to the second screw, the second screw is rotatably matched with the first base 12, the second base 22 is fixedly connected to the second screw nut, the second screw can rotate around its own axis along the external force trend line, and the second base 22 can move along the second screw together with the second screw nut.
[0052] In this embodiment, the first screw rod and the second screw rod are connected to the driving mechanism 70 in a transmission manner and can rotate under the drive of the first driving mechanism 70, so that the second connecting bracket 21 and the second base 22 move along the guide rod. The first screw rod and the second screw rod are driven to rotate by the driving mechanism 70, and the rotational movement of the first screw rod and the second screw rod is converted into the linear movement of the first screw rod nut and the second connecting bracket, the second screw rod nut and the second base. The stretching speed of the film material can be controlled by controlling the rotation rate of the first screw rod and the second screw rod, and it can be paused at will to observe and control the degree of stretching of the film material, and it can also avoid the second film fixing component from shaking during the movement, so that the film material auxiliary stretching device can stretch the film material more stably. It can be understood that the first screw rod, the second screw rod and the guide rod all extend in the first direction, and the first screw rod, the second screw rod and the guide rod are arranged in parallel. Exemplarily, the driving mechanism 70 can be a rotary drive motor, etc.
[0053] In this embodiment, the thin film material auxiliary stretching device is entirely made of polytetrafluoroethylene to adapt to the corrosive solution environment.
[0054] The present invention provides an auxiliary stretching device for thin film materials, which has a more stable clamping and fixing effect on the thin film materials, and the thin film materials will not slip. If the clamping part of the device cannot tightly fix the thin film materials, the thin film materials will be wrinkled, bulged or the stretching direction will shift during the stretching process, thereby affecting the stretching effect of the thin film materials. The processing effect of the thin film materials cannot meet expectations, and the obtained data will be far lower than expected.
[0055] The thin film material auxiliary stretching device provided by the present invention can adapt to a variety of different thin film materials and experimental environments, that is, it can conveniently complete the stretching operation for different types of thin film materials and in different types of solutions. That is, when stretching in a highly corrosive solution, the device will not be affected, and the device is stable and easy to operate.
[0056] The film material auxiliary stretching device provided by the present invention can provide a stable stretching rate, so that the film material can be stretched uniformly and stably in a solution environment, thereby achieving a better stretching effect.
[0057] The present invention provides an auxiliary stretching device for thin film materials with a detachable base: since the device is mostly used for stretching thin film materials in highly corrosive solutions, in order to ensure that the material maintains consistent tension and a stable state during the experiment, the detachable base can ensure that a certain tension is maintained during the switching of different solutions and the drying and airing processes to maintain the material's state basically stable.
[0058] The film material auxiliary stretching device provided by the present invention is made of polytetrafluoroethylene material throughout, and can be used in highly corrosive solutions. The polytetrafluoroethylene material can withstand high temperatures of 250 degrees Celsius and can also be used in environments of minus 190 degrees Celsius. It is sturdy, durable and has a wide range of uses.
[0059] The film material auxiliary stretching device provided by the present invention adopts threaded transmission, and can realize uniform speed movement of the film fixing component by controlling the rotation speed, and the stretching tension provided to the film material is more stable and uniform, and can be paused at will to observe and control the degree of stretching. In addition, the film material auxiliary stretching device provided by the present invention can realize quantitative stretching, and the film material auxiliary stretching device is simple and convenient, and has open operation, which is convenient for observing the entire stretching process.
[0060] The components of a film material auxiliary stretching device provided by the present invention are modularly arranged, which is convenient for installation. In addition, the device can stretch different types of film materials. Materials with a thickness not exceeding 1 mm can be stretched, and thicker materials can also be stretched by replacing the base. The stretching operation can also be performed in different solutions and high and low temperature environments.
[0061] The modular arrangement of components of a film material auxiliary stretching device provided by the present invention can be used to stretch film materials in highly corrosive solutions, thereby achieving modification of film materials. The components of the device are all made of polytetrafluoroethylene material, which is strong, corrosion-resistant, and resistant to high and low temperatures, effectively ensuring the practicability of the device.
[0062] The components of the film material auxiliary stretching device provided by the present invention are modularly arranged, and the transmission is achieved by slowly rotating the screw transmission to achieve the stretching effect, so that the device is stable as a whole, and no excessive shaking occurs during the stretching operation, thereby ensuring that the tension in the stretching process is stable and the force is even. The base in the film material auxiliary stretching device provided by the present invention adopts a detachable structure, so that the film material can be kept at a certain tension to reduce the impact when switching between different solutions or different environments, and can also give the material a certain tension to reduce deformation when drying or baking. At the same time, multiple bases can be prepared for one experiment to facilitate experimental operations with different materials and different environments.
[0063] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. A film material auxiliary drafting device, characterized in that: include: A first film fixing assembly and a second film fixing assembly, the first film fixing assembly and the second film fixing assembly are spaced apart along a first direction, the first film fixing assembly comprises a first connecting bracket and a first base, the first connecting bracket is detachably fixedly combined with the first base, the second film fixing assembly comprises a second connecting bracket and a second base, the first connecting bracket is detachably fixedly combined with the first base, and a film fixing mechanism is disposed on both the first base and the second base; The guide component extends as a whole along the first direction. The first film fixing component and / or the second film fixing component are movably cooperated with the guide component and can be driven by an external force to move along the guide component, so that the distance between the first film fixing component and the second film fixing component changes, thereby causing the film material connected to the first film fixing component and the second film fixing component to be stretched along the first direction.
2. The film material auxiliary stretching device according to claim 1, characterized in that: The first film fixing component is fixedly matched with the guide component, and the second film fixing component is movably matched with the guide component.
3. The film material auxiliary stretching device according to claim 1 or 2, characterized in that: The guide assembly comprises a first guide assembly and a second guide assembly spaced apart along a second direction, the first connecting bracket and the second connecting bracket cooperate with the first guide assembly, and the first base and the second base cooperate with the first guide assembly; Preferably, the first connecting bracket is fixedly matched with the first guide assembly, the second connecting bracket is movably matched with the first guide assembly, the first base is fixedly matched with the second guide assembly, and the second base is movably matched with the second guide assembly.
4. The film material auxiliary stretching device according to claim 3, characterized in that: The first guide assembly and the second guide assembly both include a guide rod extending along the first direction, and the second connecting bracket and the second base cooperate with the guide rod in a sliding manner.
5. The film material auxiliary stretching device according to claim 3, characterized in that: Also includes: A screw assembly, the screw assembly includes a screw and a screw nut threadedly arranged on the screw, the screw extends along the first direction, the screw can rotate around its own axis under the drive of external force, the first connecting bracket and / or the first base is movably matched with the screw, and the second connecting bracket and / or the second base is fixedly matched with the screw nut; when the screw rotates around its own axis, the second film fixing assembly moves synchronously with the screw nut along the screw.
6. The film material auxiliary stretching device according to claim 5, characterized in that: The screw assembly includes a first screw assembly and a second screw assembly arranged in parallel, the first screw assembly and the second screw assembly are spaced apart along the second direction, the first screw assembly includes a first screw and a first screw nut, the second screw assembly includes a second screw and a second screw nut, the first connecting bracket is movably matched with the first screw, the first base is movably matched with the second screw, the second connecting bracket is fixedly connected to the first screw nut, and the second base is fixedly connected to the second screw nut.
7. The film material auxiliary stretching device according to claim 5, characterized in that: Also includes: A stroke limiting frame, the stroke limiting frame is fixedly matched with the guide assembly, and the stroke limiting frame is arranged along a first direction on a side of the second film fixing assembly facing away from the first film fixing assembly, and the second film fixing assembly is restricted from moving between the first film fixing assembly and the limiting frame along the first direction.
8. The film material auxiliary stretching device according to claim 1, characterized in that: The first connecting bracket and the first base are detachably fixedly connected by mortise and tenon connection, interference fit, thread connection or adsorption connection; And / or, the second connecting bracket and the second base are detachably fixedly combined by mortise and tenon connection, interference fit, threaded connection or adsorption connection.
9. The film material auxiliary stretching device according to claim 1, characterized in that: The first base and the second base are also provided with at least one slit through which the film material can pass, and the slit penetrates the first base or the second base along the first direction; And / or, the first base and the second base are provided with a plurality of the slits, the plurality of the slits are sequentially arranged along the second direction, parts of the film material are sequentially arranged in the plurality of the slits to form a maze structure, and are fixed to the first base and the second base along the first direction; And / or, the film fixing mechanism is arranged on the first base and the second base, and the film material can be fixedly clamped between the film fixing mechanism and the first base or the second base; And / or, the film fixing mechanism cooperates with the first base or the second base via a magnetic component, the magnetic component includes a first magnet and a second magnet, the first magnet is fixed on the film fixing mechanism, the second magnet is fixed on the first base or the second base, the film fixing mechanism is magnetically adsorbed to the first base or the second base, and the film material is fixed between the film fixing mechanism and the first base or the second base; And / or, the film fixing mechanism is rotatably connected to the first base or the second base, and the film fixing mechanism is also connected to the first base or the second base via an elastic component, and the elastic component provides elastic force to press the film fixing mechanism onto the first base or the second base, thereby fixing the film material between the film fixing mechanism and the first base or the second base.
10. The film material auxiliary stretching device according to claim 1, characterized in that: The first film fixing assembly, the second film fixing assembly, the film fixing mechanism and the guide assembly are all polytetrafluoroethylene components; and / or the film material auxiliary stretching device is a polytetrafluoroethylene component as a whole.