A method for preparing an outer white backing film

Abstract

This application belongs to the field of solar backsheet technology, and particularly relates to a method for preparing an outer white backsheet base film, comprising the following steps: S1, material preparation: preparing raw materials according to the formula ratio; S2, melting: feeding the raw materials and additives into an extruder, and obtaining the base film material by passing the extruded mixture through a co-extrusion adapter and a die; S3, stretching: preheating the base film material, and then stretching it longitudinally and laterally; S4, winding: forming the stretched base film into a backsheet base film by pressing equipment, and then winding the obtained backsheet base film through a winding device. The beneficial effect of this application is that the above-mentioned method for preparing an outer white backsheet base film can improve the yield of the pressed backsheet base film.

Description

Technical Field

[0001] This application belongs to the field of solar backsheet technology, and particularly relates to a method for preparing a white backsheet base film for the outer layer. Background Technology

[0002] Solar panel backsheets, also known as solar panel backsheet films, photovoltaic backsheets, or solar backsheets, are widely used in solar cell (photovoltaic) modules. Located on the back of the solar panel, they protect the solar cell module from moisture corrosion in outdoor environments, block oxygen to prevent internal oxidation, and possess reliable insulation, water resistance, aging resistance, high and low temperature resistance, and corrosion resistance. They can reflect sunlight, improving module conversion efficiency; they also have high infrared reflectivity, which can reduce module temperature. The backsheet base film is typically a composite film made by laminating various base film materials.

[0003] The existing domestic backsheet film industry mainly develops two types of backsheet films: adhesive-coated backsheet films and coated backsheet films. One type mainly uses fluoropolymer films such as PVF, PVDF, or ETFE to bond with PET substrates through adhesives to prepare adhesive-coated backsheet films, which have a high manufacturing cost. The other type uses coatings with polytetrafluoroethylene resin (PTFE) or chlorotrifluoroethylene resin (CTFE) as the main resin to coat with PET substrates, which has a certain cost advantage, but there is still room for improvement. Summary of the Invention

[0004] The purpose of this application is to provide a method for preparing a white backing film for the outer layer, which can solve the above-mentioned problems.

[0005] The purpose of this application is to provide a method for preparing a white backsheet base film for the outer layer, comprising the following steps:

[0006] S1. Material preparation: Prepare raw materials according to the formula ratio;

[0007] S2, Melting: Raw materials and additives are fed into an extruder, and the extruded mixture is passed through a co-extrusion adapter and die to obtain a base film material;

[0008] S3. Stretching: The base film material is preheated, and then stretched longitudinally and laterally.

[0009] S4. Winding: The stretched base films are pressed into a backing base film using a pressing device, and then the backing base film is wound up using a winding device.

[0010] The above-described method for preparing an outer white backing film can improve the yield of the laminated backing film.

[0011] Furthermore, the pressing equipment includes a frame and also includes:

[0012] A material guiding mechanism, which is mounted on the frame and used to guide the base film material;

[0013] A winding mechanism, which is mounted on a frame and used to wind the base film material into shape;

[0014] A pressing mechanism is disposed between the material guiding mechanism and the winding mechanism, and is used to press the base film material together.

[0015] During the pressing process, the base film material, which has been stretched laterally and longitudinally, is guided towards the winding mechanism by the material guiding mechanism. During the guiding process, the pressing mechanism is activated and the base film material is pressed together to form a composite film. The pressed composite film is then wound into shape by the winding mechanism.

[0016] Furthermore: the pressing mechanism includes:

[0017] The mounting frame is symmetrically arranged on both sides of the frame;

[0018] A pressure roller assembly, comprising a fixed roller, a movable roller located above the fixed roller, and a roller frame for mounting the movable roller;

[0019] The adjustment structure includes a controller, a hydraulic cylinder connected to the controller, an output shaft of the hydraulic cylinder connected to a roller frame, a first support plate for supporting the hydraulic cylinder on the mounting frame, and a fine-tuning structure connected to the roller frame.

[0020] The fixed roller and the movable roller are both located between two mounting frames, and each mounting frame is provided with an adjustment groove for the roller frame to move.

[0021] The fixed roller is rotatably mounted between two mounting frames, and its position is fixed and cannot be moved. The movable roller is rotatably mounted on a roller frame, which is mounted on the mounting frames via an adjustment slot. The roller frame is adjusted by the adjustment structure, thereby changing the distance between the fixed roller and the movable roller. This allows it to adapt to different base film material thicknesses and can be adjusted according to needs, making it highly practical. The adjustment structure includes a controller, a hydraulic cylinder, and a fine-tuning structure. The controller controls the extension and retraction of the hydraulic cylinder's output shaft, which is connected to the roller frame. By adjusting the length of the hydraulic cylinder's output shaft, the distance between the fixed roller and the movable roller changes. At the same time, the fine-tuning structure limits the adjustment distance, making the adjustment more precise and resulting in a better pressing effect on the base film material.

[0022] Furthermore, the fine-tuning mechanism includes:

[0023] The force-applying part, one end of which is connected to the roller frame;

[0024] An adjustment section, one end of which is connected to a force-applying section, and a second support plate for mounting the adjustment section is provided on the mounting frame.

[0025] The end of the force-applying part away from the roller frame extends into the adjustment part and cooperates with the adjustment part.

[0026] Since the end of the force-applying part away from the roller frame cooperates with the adjusting part to form a telescopic structure, and one end of the force-applying part is connected to the roller frame, while the end of the adjusting part away from the force-applying part is installed on the second support plate, when the roller frame moves up and down under the influence of the hydraulic cylinder, the force-applying part will move and telescopically move with the adjusting part, thereby buffering the gap adjustment work between the two rollers and ensuring the accuracy of the gap adjustment.

[0027] Furthermore, the force-applying part includes:

[0028] A force-applying rod, one end of which is connected to the roller frame;

[0029] The mounting cylinder is connected at its bottom to the second support plate;

[0030] The movable part includes a first movable plate and a second movable plate that are movably disposed within the mounting cylinder;

[0031] A fixed plate is installed inside the mounting cylinder and located below the second movable plate;

[0032] The end of the force-applying rod away from the roller frame is connected to the first movable plate. A first spring is provided between the first movable plate and the second movable plate, and a second spring is provided between the second movable plate and the fixed plate.

[0033] The movement of the roller frame causes the force-applying rod to move as well. The end of the force-applying rod away from the roller frame is connected to the first movable plate. Therefore, when the gap between the fixed roller and the movable roller decreases, the roller frame moves downward, and the force-applying rod causes the first movable plate to move downward, thus pressing the first spring together with the second movable plate. The first spring is compressed under pressure. At the same time, the first spring, influenced by the first movable plate, presses downward against the second movable plate. The second movable plate, under pressure, compresses the second spring. Supported by the fixed plate, the second spring is compressed. The movement of the roller frame is buffered through the cooperation of the movable plate and the spring. Here, both the first spring and the second spring are buffer springs.

[0034] Meanwhile, when the gap between the fixed roller and the movable roller increases, the roller frame moves upward, and the force bar, affected by the roller frame, drives the first movable plate to move upward. At this time, the compressed first and second springs are reset, and the second movable plate, affected by the second spring, moves towards the first movable plate, thereby buffering the movement of the roller frame. In addition, both the first and second movable plates are provided with limit rings, and a matching limit structure is provided on the inner wall of the mounting cylinder, which can reduce the offset or overturning of the first and second movable plates during movement, thereby preventing the first and second movable plates from jamming during movement.

[0035] Furthermore, the adjustment unit includes:

[0036] The guide section includes a first disc and a second disc disposed on the force-applying rod. The first disc is located outside the mounting cylinder, and the second disc is located between the mounting cylinder and the movable cylinder.

[0037] The limiting part includes multiple bearing seats distributed in a ring around the force-applying rod and a limiting guide post disposed in the bearing seats. The two ends of the limiting guide post are respectively connected to the first disc and the second disc.

[0038] The connecting part includes a connecting rod, one end of which is connected to the second disc and the other end of which is connected to the first movable plate;

[0039] The first disc and the second disc are arranged in parallel, and both the first disc and the second disc are flexible discs.

[0040] The bearing seats are distributed in a ring around the force-applying rods, and each force-applying rod slides in conjunction with a limiting guide post. The cooperation of multiple limiting guide posts, bearing seats, and two discs ensures the stability of the force-applying rod movement, thereby further preventing the first and second movable plates from jamming during extension and retraction. At the same time, by setting the first and second discs at both ends of the limiting guide posts, since both the first and second discs are elastic discs, their deformation allows the force-applying part to make short-distance displacements. The displacement distance is affected by the deformation. If the first and second springs jam during movement, the required displacement distance can still be achieved through the deformation of the first and second discs, thus avoiding damage to the internal structure of the fine-tuning mechanism due to jamming. This not only ensures the accuracy of adjustment but also protects the overall fine-tuning mechanism.

[0041] Furthermore, the fine-tuning mechanism also includes:

[0042] A first slide groove is provided on one side of the adjustment groove, and a first sliding member capable of sliding within the first slide groove is provided therein;

[0043] The second slide groove is provided on the other side of the adjustment groove, and a second sliding member that can slide in the second slide groove is provided in the second slide groove;

[0044] The roller frame is provided with a first connecting block and a second connecting block on both sides, which cooperate with the first sliding member and the second sliding member respectively. The first sliding groove is also provided with a first damping structure that cooperates with the first sliding member, and the second sliding groove is provided with a second damping structure that cooperates with the second sliding member.

[0045] When adjusting the gap between the movable roller and the fixed roller, when the hydraulic cylinder drives the roller frame to move, the first connecting block and the second connecting block located on both sides of the roller frame will simultaneously drive the first sliding member and the second sliding member to move. When the first sliding member moves in the first slide groove and the second sliding member moves in the second slide groove, the first damping structure and the second damping structure will buffer the movement, thereby reducing the vibration and impact generated by the movement of the roller frame on the adjustment groove and the contact during the movement, thus ensuring the stability of the gap adjustment and avoiding collisions between the roller frame and the adjustment groove.

[0046] Furthermore, a first extended slide rail is provided at one end of the first slide groove near the fixed roller, and a first steering slider is hinged at one end of the first sliding member near the first extended slide rail. The first steering slider can move on the first extended slide rail.

[0047] The second slide groove is provided with a second extended slide rail at one end near the fixed roller, and a second steering slider is hinged to the end of the second sliding member near the second extended slide rail. The second steering slider can move on the second extended slide rail.

[0048] Both the first damping structure and the second damping structure include a damper and a buffer spring.

[0049] Both the first and second sliding members are connected to the damper, and both the first and second steering sliders are connected to the buffer spring.

[0050] As the first sliding member moves, the first steering slider also moves accordingly. A first extended slide rail is provided at the end of the first slide groove near the fixed roller. Since the first sliding member and the first steering slider are hinged, when the first steering slider moves to the connection point between the first slide groove and the first extended slide rail, it will move towards the first extended slide rail. Because the first steering slider is connected to a buffer spring, and the first extended slide rail is arc-shaped, the steering movement of the first steering slider, with the cooperation of the damper and the buffer spring, can disperse the axial force in the horizontal direction, thereby buffering the movement of the first sliding member and thus buffering the adjustment of the movable roller. Similarly, the second sliding member moves synchronously with the first sliding member. With the cooperation of the damper and the buffer spring, the steering movement of the second steering slider can disperse the axial force in the horizontal direction. Through the combined use of both, the adjustment of the movable roller is further buffered, ensuring the stability and accuracy of the adjustment.

[0051] The beneficial effects of this application are:

[0052] 1. The above-mentioned method for preparing an outer white backing film can improve the yield of the laminated backing film.

[0053] 2. By adjusting the structure, the spacing between the two rollers can be buffered, ensuring the accuracy of the spacing adjustment. The fine-tuning mechanism, under the action of the force application part and the adjustment part, can ensure the buffering capacity of the fine-tuning mechanism. Finally, the first and second discs, through their own deformation, allow the force application part to make short-distance displacement, thereby avoiding damage to the internal structure of the fine-tuning mechanism due to jamming. This not only ensures the accuracy of the adjustment, but also protects the overall fine-tuning mechanism.

[0054] 3. When adjusting the gap between the movable roller and the fixed roller, the first damping structure and the second damping structure will buffer the movement of the first sliding member and the second sliding member, thereby reducing the vibration and impact generated by the movement of the roller frame on the adjustment groove and the contact during the movement, thus ensuring the stability of the gap adjustment and avoiding collisions between the roller frame and the adjustment groove. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the structure of the present invention;

[0056] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0057] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0058] Figure 4 This is a top view of the present invention;

[0059] Figure 5 This is a cross-sectional view of the present invention along the AA direction;

[0060] Figure 6 yes Figure 5 A magnified view of B in the middle.

[0061] The reference numerals in the figure are as follows: 100, frame; 200, material guiding mechanism; 300, winding mechanism; 400, pressing mechanism; 410, mounting frame; 420, fixed roller; 421, movable roller; 423, roller frame; 440, hydraulic cylinder; 450, adjusting groove; 500, fine-tuning structure; 510, force application part; 511, force application rod; 512, mounting cylinder; 513, first movable plate; 514, second movable plate; 515, fixed plate; 516, first spring; 517, second spring; 52 0. Adjustment unit; 521. First disc; 522. Second disc; 523. Bearing seat; 524. Limiting guide post; 525. Connecting rod; 600. First slide groove; 610. First sliding member; 620. Second slide groove; 621. Second sliding member; 630. First connecting block; 631. Second connecting block; 640. First damping structure; 641. Second damping structure; 650. First extension slide rail; 651. First steering slider; 660. Second extension slide rail; 661. Second steering slider. Detailed Implementation

[0062] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0063] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0064] The preparation method of the outer white backing film provided in this application embodiment will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0065] Example 1:

[0066] like Figure 1 As shown in the figure, this application provides a method for preparing a white backsheet base film for the outer layer, including the following steps:

[0067] S1. Material preparation: Prepare raw materials according to the formula ratio;

[0068] S2, Melting: Raw materials and additives are fed into an extruder, and the extruded mixture is passed through a co-extrusion adapter and die to obtain a base film material;

[0069] S3. Stretching: The base film material is preheated, and then stretched longitudinally and laterally.

[0070] S4. Winding: The stretched base films are pressed into a backing base film using a pressing device, and then the backing base film is wound up using a winding device.

[0071] In some embodiments of this application, the above-described method for preparing an outer white backing film can improve the yield of the laminated backing film.

[0072] Example 2:

[0073] This application provides a method for preparing a white backsheet base film for the outer layer. In addition to the above-mentioned technical features, the method for preparing a white backsheet base film for the outer layer of this application also includes the following technical features.

[0074] like Figure 1 , Figure 2 and Figure 4 As shown, the pressing equipment includes a frame 100, and also includes:

[0075] The material guiding mechanism 200 is mounted on the frame 100 and is used to guide the base film material;

[0076] A winding mechanism 300 is mounted on the frame 100 and is used to wind the base film material into shape.

[0077] The pressing mechanism 400 is disposed between the material guiding mechanism 200 and the winding mechanism 300, and is used to press the base film material together.

[0078] In this embodiment of the application, during the pressing process, the base film material that has been stretched laterally and longitudinally is guided to the winding mechanism 300 by the material guiding mechanism 200. During the guiding process, the pressing mechanism 400 is activated and presses the base film material to press multiple base film materials into a composite film. The pressed composite film is finally wound into shape by the winding mechanism 300.

[0079] The pressing mechanism 400 includes:

[0080] Mounting frame 410 is symmetrically arranged on both sides of rack 100;

[0081] The pressure roller assembly includes a fixed roller 420, a movable roller 421 located above the fixed roller 420, and a roller frame 423 for mounting the movable roller 421.

[0082] The adjustment structure includes a controller, a hydraulic cylinder 440 connected to the controller, an output shaft of the hydraulic cylinder 440 connected to a roller frame 423, a first support plate for supporting the hydraulic cylinder 440 on the mounting frame 410, and a fine-tuning structure 500 connected to the roller frame 423.

[0083] The fixed roller 420 and the movable roller 421 are both located between two mounting frames 410, and each mounting frame 410 is provided with an adjustment groove 450 for the roller frame 423 to move.

[0084] In some embodiments of this application, a fixed roller 420 is rotatably mounted between two mounting frames 410, and the position of the fixed roller 420 is fixed and cannot be moved. A movable roller 421 is rotatably mounted on a roller frame 423, which is mounted on the mounting frame 410 via an adjustment groove 450. The roller frame 423 is adjusted by the adjustment structure, thereby changing the distance between the fixed roller 420 and the movable roller 421. This allows for adaptation to different base film material thicknesses and can be adjusted according to requirements, making it highly practical. The adjustment structure includes a controller, a hydraulic cylinder 440, and a fine-tuning structure 500. The controller controls the extension and retraction of the output shaft of the hydraulic cylinder 440, which is connected to the roller frame 423. By adjusting the length of the output shaft of the hydraulic cylinder 440, the distance between the fixed roller 420 and the movable roller 421 is changed. At the same time, by setting the fine-tuning structure 500, the adjustment distance can be limited, making the adjustment more precise and resulting in a better pressing effect on the base film material.

[0085] Example 3:

[0086] This application provides a method for preparing a white backsheet base film for the outer layer. In addition to the above-mentioned technical features, the method for preparing a white backsheet base film for the outer layer of this application also includes the following technical features.

[0087] like Figure 1 and Figure 3 As shown, the fine-tuning mechanism includes:

[0088] Force-applying part 510, one end of which is connected to roller frame 423;

[0089] Adjustment part 520, one end of adjustment part 520 is connected to force application part 510, and mounting frame 410 is provided with a second support plate for mounting adjustment part 520;

[0090] The end of the force-applying part 510 away from the roller frame 423 extends into the adjustment part 520 and cooperates with the adjustment part 520.

[0091] In this embodiment, since the end of the force-applying part 510 away from the roller frame 423 cooperates with the adjustment part 520 to form a telescopic structure, and one end of the force-applying part 510 is connected to the roller frame 423, and the end of the adjustment part 520 away from the force-applying part 510 is mounted on the second support plate, when the roller frame 423 is moved up and down by the hydraulic cylinder 440, the force-applying part 510 will move and telescopically move with the adjustment part 520, thereby buffering the gap adjustment work between the two rollers and ensuring the accuracy of the gap adjustment.

[0092] Example 4:

[0093] This application provides a method for preparing a white backsheet base film for the outer layer. In addition to the above-mentioned technical features, the method for preparing a white backsheet base film for the outer layer of this application also includes the following technical features.

[0094] like Figure 3 As shown, the force-applying part 510 includes:

[0095] Force rod 511, one end of force rod 511 is connected to roller frame 423;

[0096] The mounting cylinder 512 is connected to the second support plate at its bottom.

[0097] The movable part includes a first movable plate 513 and a second movable plate 514 that are movably disposed within the mounting cylinder 512;

[0098] The fixing plate 515 is disposed inside the mounting cylinder 512 and located below the second movable plate 514;

[0099] The end of the force-applying rod 511 away from the roller frame 423 is connected to the first movable plate 513. A first spring 516 is provided between the first movable plate 513 and the second movable plate 514, and a second spring 517 is provided between the second movable plate 514 and the fixed plate 515.

[0100] In this embodiment, the movement of the roller frame 423 causes the force-applying rod 511 to move as well. The end of the force-applying rod 511 away from the roller frame 423 is connected to the first movable plate 513. Therefore, when the gap between the fixed roller 420 and the movable roller 421 decreases, the roller frame 423 moves downward, and the force-applying rod 511 causes the first movable plate 513 to move downward, thereby pressing the first spring 516 together with the second movable plate 514. The first spring 516 is compressed under pressure. At the same time, the first spring 516 is pressed downward by the first movable plate 513, pressing the second movable plate 514. The second movable plate 514 is compressed, pressing the second spring 517. Under the support of the fixed plate 515, the second spring 517 is compressed. The movement of the roller frame 423 is buffered through the cooperation of the movable plate and the spring. Here, both the first spring 516 and the second spring 517 are buffer springs.

[0101] Meanwhile, when the gap between the fixed roller 420 and the movable roller 421 increases, the roller frame 423 moves upward, and the force rod 511, affected by the roller frame 423, drives the first movable plate 513 to move upward. At this time, the compressed first spring 516 and second spring 517 are reset, and the second movable plate 514, affected by the second spring 517, moves towards the first movable plate 513, thereby buffering the movement of the roller frame 423. In addition, both the first movable plate 513 and the second movable plate 514 are provided with a limiting outer ring, and a limiting structure that cooperates with the limiting outer ring is provided on the inner wall of the mounting cylinder 512, which can reduce the offset or overturning of the first movable plate 513 and the second movable plate 514 during movement, thereby preventing the first movable plate 513 and the second movable plate 514 from getting stuck during movement.

[0102] Example 5:

[0103] This application provides a method for preparing a white backsheet base film for the outer layer. In addition to the above-mentioned technical features, the method for preparing a white backsheet base film for the outer layer of this application also includes the following technical features.

[0104] like Figure 3 As shown, the adjustment unit 520 includes:

[0105] The guide section includes a first disc 521 and a second disc 522 disposed on the force-applying rod 511. The first disc 521 is located outside the mounting cylinder 512, and the second disc 522 is located between the mounting cylinder 512 and the movable cylinder.

[0106] The limiting part includes multiple bearing seats 523 arranged in a ring around the force-applying rod 511 and a limiting guide post 524 disposed in the bearing seat 523. The two ends of the limiting guide post 524 are respectively connected to the first disc 521 and the second disc 522.

[0107] The connecting part includes a connecting rod 525, one end of which is connected to the second disc 522 and the other end is connected to the first movable plate 513;

[0108] The first disc 521 and the second disc 522 are arranged in parallel, and both the first disc 521 and the second disc 522 are flexible discs.

[0109] In this embodiment, the bearing housing 523 is arranged in a ring around the force-applying rod 511. Each force-applying rod 511 is slidably engaged with the limiting guide post 524. The cooperation of multiple limiting guide posts 524, bearing housing 523 and two discs can ensure the stability of the movement of the force-applying rod 511, thereby further preventing the first movable plate 513 and the second movable plate 514 from jamming during extension and retraction. At the same time, by setting the first disc 521 and the second disc 522 at both ends of the limiting guide post 524, since the first disc 521 and the second disc 522 are both elastic discs, the force-applying part 510 can be allowed to make short-distance displacement through its own deformation. The displacement distance is affected by the degree of deformation. If the first spring 516 and the second spring 517 jam during movement, the required displacement distance can still be achieved through the deformation of the first disc 521 and the second disc 522, thereby avoiding damage to the internal structure of the fine-tuning mechanism due to jamming. This not only ensures the accuracy of adjustment, but also protects the overall fine-tuning mechanism.

[0110] Example 6:

[0111] This application provides a method for preparing a white backsheet base film for the outer layer. In addition to the above-mentioned technical features, the method for preparing a white backsheet base film for the outer layer of this application also includes the following technical features.

[0112] like Figures 4 to 6 As shown, the fine-tuning mechanism also includes:

[0113] The first slide groove 600 is disposed on one side of the adjustment groove 450, and a first sliding member 610 capable of sliding within the first slide groove 600 is disposed therein.

[0114] The second slide groove 620 is provided on the other side of the adjustment groove 450, and a second sliding member 621 that can slide in the second slide groove is provided in the second slide groove 620;

[0115] The roller frame 423 is provided with a first connecting block 630 and a second connecting block 631 on both sides, which cooperate with the first sliding member 610 and the second sliding member 621 respectively. The first sliding groove 600 is also provided with a first damping structure 640 that cooperates with the first sliding member 610, and the second sliding groove 620 is provided with a second damping structure 641 that cooperates with the second sliding member 621.

[0116] In this embodiment, when adjusting the gap between the movable roller 421 and the fixed roller 420, when the hydraulic cylinder 440 drives the roller frame 423 to move, the first connecting block 630 and the second connecting block 631 located on both sides of the roller frame 423 will simultaneously drive the first sliding member 610 and the second sliding member 621 to move. When the first sliding member 610 moves in the first slide groove 600 and the second sliding member 621 moves in the second slide groove 620, the first damping structure 640 and the second damping structure 641 will buffer the movement, thereby reducing the vibration and impact generated by the movement of the roller frame 423 on the adjustment groove 450 and the contact during the movement, thus ensuring the stability of the gap adjustment and avoiding collisions between the roller frame 423 and the adjustment groove 450.

[0117] Furthermore, a first extended slide rail 650 is provided at one end of the first slide groove 600 near the fixed roller 420, and a first steering slider 651 is hinged at one end of the first sliding member 610 near the first extended slide rail 650. The first steering slider 651 can move on the first extended slide rail 650.

[0118] The second slide 620 is provided with a second extended slide rail 660 at one end near the fixed roller 420, and a second sliding member 621 is hinged to a second steering slider 661 at one end near the second extended slide rail 660. The second steering slider 661 can move on the second extended slide rail 660.

[0119] Both the first damping structure 640 and the second damping structure 641 include a damper and a buffer spring.

[0120] The first sliding member 610 and the second sliding member 621 are both connected to the damper, and the first steering slider 651 and the second steering slider 661 are both connected to the buffer spring.

[0121] In some embodiments of this application, as the first sliding member 610 moves, the first steering slider 651 also moves accordingly. Because a first extended slide rail 650 is provided at one end of the first slide groove 600 near the fixed roller 420, and since the first sliding member 610 and the first steering slider 651 are hinged, when the first steering slider 651 moves to the connection point between the first slide groove 600 and the first extended slide rail 650, the first steering slider 651 will move towards the first extended slide rail 650. Since the first steering slider 651 is connected to a buffer spring, and the first extended slide rail 650 is arc-shaped, therefore… With the cooperation of the damper and the buffer spring, the steering movement of the first steering slider 651 can disperse the axial force to the horizontal direction, thereby buffering the movement of the first sliding member 610 and thus buffering the adjustment of the movable roller 421. Similarly, the second sliding member 621 moves synchronously with the first sliding member 610. With the cooperation of the damper and the buffer spring, the steering movement of the second steering slider 661 can disperse the axial force to the horizontal direction. Through the combined use of the two, the adjustment of the movable roller 421 is further buffered, ensuring the stability and accuracy of the adjustment.

[0122] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0123] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An apparatus for preparing a white backing film for the outer layer, characterized in that, Including pressing equipment; The pressing equipment includes a frame (100) and also includes: A material guiding mechanism (200) is disposed on the frame (100) and used to guide the base film material; A winding mechanism (300) is disposed on a frame (100) and is used to wind the base film material into shape; A pressing mechanism (400) is disposed between a material guiding mechanism (200) and a winding mechanism (300) and is used to press the base film materials together; The pressing mechanism (400) includes: Mounting frame (410), which is symmetrically arranged on both sides of the frame (100); The pressure roller assembly includes a fixed roller (420), a movable roller (421) located above the fixed roller (420), and a roller frame (423) for mounting the movable roller (421); The adjustment structure includes a controller and a hydraulic cylinder (440) connected to the controller. The output shaft of the hydraulic cylinder (440) is connected to the roller frame (423). A first support plate for supporting the hydraulic cylinder (440) is provided on the mounting frame (410). The roller frame (423) is also connected to a fine-tuning structure (500). The fixed roller (420) and the movable roller (421) are both located between two mounting frames (410), and each mounting frame (410) is provided with an adjustment groove (450) for the roller frame (423) to move. The fine-tuning structure (500) includes: Force-applying part (510), one end of which is connected to roller frame (423); An adjustment part (520) is provided, one end of which is connected to a force-applying part (510), and a second support plate is provided on the mounting frame (410) for mounting the adjustment part (520); The end of the force-applying part (510) away from the roller frame (423) extends into the adjustment part (520) and cooperates with the adjustment part (520); The force-applying part (510) includes: A force-applying rod (511), one end of which is connected to the roller frame (423); Mounting cylinder (512), the bottom of which is connected to the second support plate; The movable part includes a first movable plate (513) and a second movable plate (514) that are movably disposed within the mounting cylinder (512); A fixed plate (515) is disposed inside the mounting cylinder (512) and located below the second movable plate (514); Wherein, the end of the force-applying rod (511) away from the roller frame (423) is connected to the first movable plate (513), a first spring (516) is provided between the first movable plate (513) and the second movable plate (514), and a second spring (517) is provided between the second movable plate (514) and the fixed plate (515). The adjustment unit (520) includes: The guide section includes a first disc (521) and a second disc (522) disposed on the force-applying rod (511). The first disc (521) is located outside the mounting cylinder (512), and the second disc (522) is located between the mounting cylinder (512) and the movable cylinder. The limiting part includes multiple bearing seats (523) distributed in a ring around the force bar (511) and a limiting guide post (524) disposed in the bearing seat (523). The two ends of the limiting guide post (524) are respectively connected to the first disc (521) and the second disc (522). The connecting part includes a connecting rod (525), one end of which is connected to the second disc (522), and the other end is connected to the first movable plate (513); The first disc (521) and the second disc (522) are arranged in parallel, and both the first disc (521) and the second disc (522) are flexible discs.

2. The equipment for preparing a white backing film for an outer layer according to claim 1, characterized in that: The fine-tuning structure (500) also includes: A first slide groove (600) is provided on one side of the adjustment groove (450), and a first sliding member (610) capable of sliding within the first slide groove (600) is provided therein; The second slide groove (620) is provided on the other side of the adjustment groove (450), and a second sliding member (621) that can slide in the second slide groove (620) is provided in the second slide groove (620); The roller frame (423) is provided with a first connecting block (630) and a second connecting block (631) on both sides, which cooperate with the first sliding member (610) and the second sliding member (621), respectively. The first sliding groove (600) is also provided with a first damping structure (640) that cooperates with the first sliding member (610), and the second sliding groove (620) is provided with a second damping structure (641) that cooperates with the second sliding member (621).

3. The equipment for preparing a white backing film for an outer layer according to claim 2, characterized in that: The first slide groove (600) is provided with a first extended slide rail (650) at one end near the fixed roller (420), and the first sliding member (610) is hinged with a first steering slider (651) at one end near the first extended slide rail (650). The first steering slider (651) can move on the first extended slide rail (650). The second slide groove (620) is provided with a second extended slide rail (660) at one end near the fixed roller (420), and the second sliding member (621) is hinged with a second steering slider (661) at one end near the second extended slide rail (660). The second steering slider (661) can move on the second extended slide rail (660). Both the first damping structure (640) and the second damping structure (641) include a damper and a buffer spring; The first slider (610) and the second slider (621) are both connected to the damper, and the first steering slider (651) and the second steering slider (661) are both connected to the buffer spring.

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