Decorative film and plate composite cutting method and equipment applied to decorative film and plate composite cutting method
By automating the composite cutting process of the board and decorative film simultaneously, and combining multiple heating and air cooling treatments, the problem of balancing efficiency and quality in the production of refrigerator decorative panels has been solved, achieving a highly efficient and stable production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-06
- Publication Date
- 2026-03-17
AI Technical Summary
Existing refrigerator decorative panel production processes struggle to balance production efficiency and product quality, especially roll-to-roll processes which increase labor costs and have low production efficiency and poor consistency.
Through automated conveying and precise control of the sheet rolls, the process of "unwinding → calibration → heating → leveling and shaping → cleaning" of the sheet and "unwinding of decorative film → recycling of release paper → precise alignment" are carried out simultaneously. Combined with multiple heating, leveling and air cooling treatments, the surface quality of the sheet is ensured. Finally, the sheet is laminated and cut.
It reduces secondary processing steps, improves production efficiency, reduces manual intervention, enhances product consistency and quality, and solves the problem of balancing production efficiency and quality in traditional processes.
Smart Images
Figure CN121671027A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of refrigerator manufacturing technology, and more specifically, to a method for composite cutting of decorative film and sheet material and equipment for its application. Background Technology
[0002] With years of development in the refrigerator market, refrigerators have become increasingly diverse, catering to the different needs of various consumer groups. While refrigerators are classified in many ways—single-door, two-door, three-door, side-by-side, French door, and multi-door—they can be broadly categorized by price range into three types: economy, mid-range, and high-end. According to consumer research conducted by OEMs, many consumers prioritize cost-effectiveness. Therefore, in recent years, OEMs have been applying exterior decorative and non-functional components from mid-to-high-end refrigerators to economy models through technological iteration. One common approach is to develop a metallic-look decorative panel for the air ducts found in mid-to-high-end refrigerators, replacing it with a similar panel in economy models. This increases costs slightly while enhancing the aesthetic appeal and providing consumers with more choices.
[0003] These imitation metal duct decorative panels on the market are generally produced by first manufacturing composite decorative panels, and then assembling them into components using adhesive tape or ultrasonic welding with duct panels. Currently, there are two main production methods for these composite decorative panels: one is sheet-to-roll lamination, where the sheet material is first cut and placed on a conveyor belt, with the decorative film roll positioned above it. The cut sheet material is then laminated with the decorative film sequentially to form individual sheets. The other method is roll-to-roll composite winding, where the sheet material roll and the decorative film roll are glued together, then wound into a roll, flattened into sheets, and finally cut into individual sheets.
[0004] The roll-to-roll lamination process requires a secondary leveling of the roll material, increasing labor costs. While the sheet-to-roll lamination process reduces the leveling step, it is mostly intermittent production, relying heavily on manual or semi-automated operations, resulting in lower production efficiency. Furthermore, it is affected by fluctuations in sheet positioning and pressing parameters, leading to poor product consistency in mass production. Neither of these two commonly used processes can perfectly balance production efficiency and product quality. Summary of the Invention
[0005] This invention provides a method for composite cutting of decorative film and sheet material, and equipment for its application, which can solve the problem that existing lamination processes cannot balance production efficiency and product quality.
[0006] A method for composite cutting of decorative film and sheet material includes: The sheet is released by rolling it into a coil and guided. During the conveying process, both sides of the sheet are heated, and the sheet needs to be calibrated before and after heating. The heated board material is leveled multiple times, and the board material is cooled intermittently during the leveling process. After cleaning, leveling, and cooling, the surface of the board is ready for the lamination stage. During the lamination stage, the decorative film with adhesive backing is released through the decorative film roll. The decorative film and the cleaned board are then pressed together after positioning to form a composite board. During the release of the decorative film, the release paper released from the decorative film roll is simultaneously wound up. The composite board is cut into preset sizes to form sheets.
[0007] The present invention provides a composite cutting method for decorative film and sheet materials, which, compared with the prior art, has the following beneficial effects, but is not limited to: This method first heats the sheet material, then levels it. The entire leveling process is completed before lamination with the decorative film. Simultaneously, through automated conveying and precise control, the processes of "unwinding → calibration → heating → leveling and shaping → cleaning" of the sheet material and "unwinding of the decorative film → release paper recycling → precise alignment" are carried out concurrently. Finally, lamination and cutting are completed without secondary processing or intermittent manual intervention, breaking the limitations of traditional processes that require lamination followed by secondary leveling or intermittent feeding. This design reduces segmented secondary processing in roll-to-roll lamination, reducing labor and improving efficiency, while also resolving the impact of intermittent manual feeding on product consistency in sheet-to-roll lamination.
[0008] Furthermore, during the heating process, the front and back sides of the board are heated alternately, and each side of the board is heated at least twice.
[0009] Furthermore, at least two heating devices are provided in the direction of material movement. The heating devices include a first heating roller and a second heating roller, and the first heating roller and the second heating roller rotate in opposite directions.
[0010] Furthermore, a correction device is used to calibrate the position of the board material.
[0011] Furthermore, multiple leveling rollers are arranged in the direction of board movement, and the multiple leveling rollers are staggered on the front and back of the board to apply relative pressure to the board.
[0012] Furthermore, an air-cooling device is provided between two adjacent leveling rollers, and multiple air-cooling devices are staggered on the front and back of the plate.
[0013] Furthermore, an ion fan is used to clean the surface of the leveled and cooled board. The ion fan neutralizes the static electricity on the board surface by releasing positive and negative ions and generates airflow to blow away impurities on the board surface.
[0014] Furthermore, during the lamination stage, a pair of pressure rollers are installed on the front and back of the board, and the line connecting the centers of the two pairs of pressure rollers is perpendicular to the board.
[0015] A decorative film and sheet composite cutting device as described above, using the method described above, includes a roller assembly for guiding, conveying and leveling the sheet; A heating device and an air-cooling device, the roller assembly, the heating device and the air-cooling device working together, are used to correct the surface quality of the sheet material while it is being conveyed; The pressure roller is used to press and bond the sheet material and the decorative film together. A cutter and a lifting device are provided on one side of the pressure roller.
[0016] Since the technological improvements and beneficial effects of a decorative film and sheet composite cutting equipment are at least the same as those of the decorative film and sheet composite cutting method, the equipment will not be described in detail here.
[0017] Furthermore, the lifting device is connected to a tray, which descends synchronously with the stacking height of the sheets. Attached Figure Description
[0018] Figure 1 This is a flowchart of a composite cutting method for decorative film and sheet material according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a decorative film and sheet composite cutting device according to an embodiment of the present invention.
[0019] Explanation of reference numerals in the attached figures: 1. Guide roller; 2. Deviation corrector; 3. Inspection guide roller; 4. Heating device; 41. First heating roller; 42. Second heating roller; 5. Pressure roller; 6. Leveling roller; 7. Air cooling device; 8. Ionizing fan; 9. Counterweight roller; 10. Cutting knife; 11. Lifting device; 12. Take-up roller. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.
[0021] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0024] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.
[0025] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0026] Before production, the roll-to-roll lamination process for composite decorative panels involves bonding the panel rolls and decorative film rolls with adhesive, then winding them up in rolls. The process involves two unwinding and one winding operation, both involving rolls. "Two unwinding" refers to the simultaneous release of the two core materials through an unwinding device: releasing the panel roll (e.g., ABS substrate, thin metal sheet) and releasing the decorative film roll (e.g., PET imitation metal film, adhesive-backed decorative film). After being guided by guide rollers and coated with adhesive, the two rolls are laminated at the pressure rollers. "One winding" refers to the unified winding of the laminated roll (the panel and decorative film integrated into a single roll) into a roll shape by a winding device for subsequent secondary processing (e.g., leveling and cutting after adhesive curing). After the adhesive has fully applied, the laminated roll is leveled and unwound to become a sheet. The final processing is then carried out on the sheet according to the user's drawings.
[0027] The sheet-to-roll lamination process involves placing the decorative film in roll form on top, then manually placing the pre-cut sheets onto a conveyor belt or platform. Several pre-cut sheets are then sequentially laminated with the decorative film to form a sheet. Because the sheets are pre-cut, the cutter only needs to cut the decorative film. Similarly, final processing is performed on the sheet according to the user's drawings.
[0028] See Figures 1-2 As shown in the figure, an embodiment of the present invention provides a method for composite cutting of decorative film and sheet material, comprising: The sheet is released from the sheet roll and guided. During the sheet conveying process, both sides of the sheet are heated, and the sheet needs to be calibrated before and after heating.
[0029] The heated board material is leveled multiple times, and the board material is cooled intermittently during the leveling process.
[0030] After cleaning, leveling, and cooling, the surface of the board is ready for the lamination stage.
[0031] During the lamination stage, the decorative film with adhesive backing is released from the decorative film roll. The decorative film and the cleaned board are then pressed together after positioning to form a composite board. During the release of the decorative film, the release paper released from the decorative film roll is simultaneously wound up.
[0032] The composite board is cut into preset sizes to form sheets.
[0033] In this embodiment, the method first heats the unwound sheet material and then levels it. The entire leveling process is completed before lamination with the decorative film. Simultaneously, through automated conveying and precise control, the processes of "unwinding → calibration → heating → leveling and shaping → cleaning" of the sheet material and "unwinding of the decorative film → release paper recycling → precise alignment" are synchronized, ultimately completing lamination and cutting. The entire process involves no secondary processing and no intermittent manual intervention, breaking the limitations of traditional processes that require lamination followed by secondary leveling or intermittent feeding. This design reduces segmented secondary processing in roll-to-roll lamination, reducing labor and improving efficiency, while also addressing the impact of intermittent manual feeding on product consistency in sheet-to-roll lamination.
[0034] Optionally, during the heating process, the front and back sides of the board are heated alternately, and each side of the board is heated at least twice.
[0035] The inventors discovered that during the storage, transportation, or early processing of sheet materials in coils, deformation defects such as wavy lines, slight warping, and localized depressions are easily generated due to stress accumulation and temperature changes.
[0036] In this embodiment, heating the front and back of the board multiple times can make the board softer, and the method of alternating heating of the two sides of the board can make the board heat more evenly, so that the temperature of the board can rise evenly to the plasticity optimization range, soften the internal stress structure of the board, and provide conditions for deformation correction.
[0037] Optionally, at least two heating devices 4 are provided in the direction of plate movement. The heating device 4 includes a first heating roller 41 and a second heating roller 42, and the first heating roller 41 and the second heating roller 42 rotate in opposite directions.
[0038] In this embodiment, two heating devices 4 are provided. In each heating device 4, two heating rollers are arranged vertically, with the first heating roller 41 located below the second heating roller 42. The sheet material is alternately passed between the first heating roller 41 and the second heating roller 42, and the conveying direction of the sheet material is adapted to the rotation direction of the heating rollers, which can further assist in the conveying of the sheet material while heating it.
[0039] Optionally, a spin corrector 2 can be used to calibrate the position of the board material.
[0040] In this embodiment, two guide wire guides 2 are provided. One guide wire guide 2 is placed before the first heating device 4, and the other guide wire guide 2 is placed after the last heating device 4. The purpose of setting up two guide wire guides 2 before and after heating is to lock the conveying accuracy of the board throughout the process, avoid positional deviation caused by the heating process from affecting the subsequent lamination and cutting quality, and adapt to the needs of continuous automated production.
[0041] Specifically, pre-heating alignment helps establish a solid initial positioning foundation. After the sheet material is released, there are issues such as eccentricity of the sheet roll itself and fluctuations in unwinding tension, which can lead to deviations in the conveying direction. The alignment device 2 pre-calibrates the sheet material position to ensure that the sheet material enters the heating device 4 with a precise posture, avoiding uneven heating (such as differences in heating between the edges and the center) caused by initial deviations. This sets a unified center baseline for all subsequent processes (heating, leveling, and lamination), reducing the difficulty of subsequent adjustments.
[0042] In addition, a detection guide roller 3 is installed between the preheating guide roller 2 and the heating device 4. The detection guide roller 3 is a conventional guide roller equipped with a pressure sensor. The pressure sensor ensures that there is always sheet material in the equipment. When no sheet material passes through, it means that the sheet roll unloading is complete and there is no material, allowing for material replacement or production to stop, avoiding subsequent process disruptions caused by equipment idling (such as decorative film lamination, cutter 10 empty cutting). The pressure sensor reflects tension fluctuations during sheet material conveying. If an abnormally high pressure value is detected (e.g., sheet material stacking due to wrinkles) or an abnormally low pressure value is detected (e.g., insufficient unwinding tension causing sheet material slack), the signal can be fed back to the external tension control system. The system dynamically adjusts the braking tension of the sheet roll according to pressure changes, ensuring that the sheet material always enters the heating device 4 in a stable tensioned state, avoiding heating deviation or surface scratches caused by uneven tension.
[0043] Furthermore, post-heating correction facilitates the correction of misalignment caused by thermal deformation. After the sheet material undergoes multiple heating cycles (at least twice on each side), it will experience slight deformation due to thermal expansion and contraction. Simultaneously, subtle changes in the traction tension of the first heating roller 41 and the second heating roller 42 during the heating process can also easily lead to positional misalignment. Without secondary correction, misaligned sheets will result in issues such as misalignment of the decorative film and deviations in cutting dimensions when entering the leveling and lamination processes. The correction device 2 can precisely correct the misalignment after heating, ensuring that the sheet material enters the leveling components and lamination stages with a stable posture, guaranteeing product consistency in mass production.
[0044] The dual web guides form a closed-loop control system of "pre-calibration + post-correction," preventing minor errors from a single web guide from accumulating and amplifying in subsequent processes. This ensures that the sheet material remains on the preset conveying path throughout the entire process from unwinding to lamination, guaranteeing accurate alignment and precise cutting of the decorative film.
[0045] Optionally, multiple leveling rollers 6 are provided in the direction of material movement, and the multiple leveling rollers 6 are staggered on the front and back of the material to apply relative pressure to the material.
[0046] In this embodiment, four leveling rollers 6 are arranged alternately on the top and bottom to apply stable and uniform relative pressure to the heated board material, gradually smoothing out the wavy lines and warping on the surface of the board material, while suppressing new deformations caused by uneven force during the conveying process of the board material.
[0047] Optionally, an air-cooling device 7 is provided between two adjacent leveling rollers 6, and multiple air-cooling devices 7 are staggered on the front and back of the board.
[0048] In this embodiment, the air-cooling device 7 is inserted between the leveling rollers 6. After the board is heated by the heating device 4, it is leveled by the leveling rollers 6 and then cooled and shaped by the air-cooling device 7, turning the rolled material into a flat material, instantly locking the flat shape and avoiding secondary deformation.
[0049] Specifically, after repeated heating, the sheet material is in a plastic state. Although it is leveled by the leveling roller 6, it is prone to warping and wavy lines during natural cooling due to the release of internal stress and uneven temperature gradients. The air-cooling device 7 blows constant-temperature cold air to quickly reduce the sheet temperature from the heated plastic range to room temperature. Moreover, the staggered distributed design synchronizes the cooling rhythm with the leveling action, ensuring that the flatness of the sheet material after pressure correction is locked in immediately, completely solving the problem of "deformation after cooling" in traditional processes. Furthermore, the air-cooling device 7 cools the sheet material, preventing high temperatures from damaging the adhesive of the decorative film to be laminated with the sheet material, and also avoiding the phenomenon that high temperatures make it easier for dust and impurities to be adsorbed on the sheet material surface. The stable low temperature makes the physical properties of the sheet material more stable, and when laminated with the decorative film, it will not cause misalignment, bubbles, or wrinkles due to thermal expansion and contraction. The airflow generated by the air-cooling device 7 can also remove trace amounts of dust or oil residue generated by heating on the surface of the sheet material, further reducing the impurity content on the surface of the sheet material in conjunction with subsequent cleaning processes. To prevent impurities from being trapped between the decorative film and the board in subsequent lamination processes, reduce surface impurities and bubbles, and improve the surface smoothness of the final product.
[0050] Optionally, an ion fan 8 is used to clean the surface of the board after leveling and cooling. The ion fan 8 neutralizes the static electricity on the board surface by releasing positive and negative ions and generates airflow to blow away impurities on the board surface.
[0051] Optionally, after cleaning, leveling, and cooling the surface of the board, the board enters the lamination stage. During the lamination stage, a pair of pressure rollers 9 are set on the front and back of the board, and the line connecting the centers of the two pairs of pressure rollers 9 is perpendicular to the board.
[0052] In this embodiment, the line connecting the centers of the two pressure rollers 9 is perpendicular to the board material, meaning the pressure direction is completely perpendicular to the board surface. This vertical pressure method allows the decorative film to receive uniform and positive pressure on the contact surface with the board, ensuring full adhesion between the decorative film and the board, avoiding localized loose adhesion due to tilted pressure angles, and reducing defects such as bubbles and weak adhesion. Compared to tilted pressure, vertical pressure can maximize the transmission to the composite interface, especially suitable for decorative films with adhesive backing, promoting full contact between the adhesive backing and the board surface, and improving adhesion strength. The two pressure rollers 9, located on the front and back of the board, form an "upper and lower clamping" structure. In the clamping state, the friction between the pressure rollers 9 and the board helps stabilize the board conveying speed, preventing relative sliding between the board and the decorative film during lamination, and ensuring precise alignment. The bidirectional clamping of the pressure rollers 9 can disperse pressure, avoiding deformation of the board or damage to the decorative film caused by pressure in one direction.
[0053] Among them, the pressure roller 9 above the board can be a steel roller to ensure the flatness of the composite surface, and the pressure roller 9 below the board can be equipped with an elastic material (such as a rubber roller). The rigidity of the steel roller ensures the flatness of the surface, while the buffering effect of the elastic roller prevents the board from being over-deformed by pressure, and at the same time protects the surface of the decorative film from being scratched.
[0054] The combination of two vertical pressure rollers 9 and bidirectional clamping can reduce the impact on the physical properties of the substrate and decorative film while ensuring the quality of the composite, and is especially suitable for substrates that are thin or brittle.
[0055] In this embodiment, the specific operation steps of the method are as follows: S1. The sheet is released from the sheet roll and guided. During the sheet conveying process, both sides of the sheet are heated, and the position of the sheet needs to be calibrated before and after heating.
[0056] S2. The heated board material is leveled multiple times, and the board material is cooled intermittently during the leveling process.
[0057] S3. Clean, level, and cool the surface of the board to allow it to enter the lamination stage.
[0058] S4. In the lamination stage, the decorative film with adhesive backing is released through the decorative film roll. The decorative film and the cleaned board are pressed together after positioning to form a composite board. During the release of the decorative film, the release paper released from the decorative film roll is simultaneously wound up.
[0059] It should be noted that during the process of releasing the decorative film roll with adhesive backing, the unwinding speed of the decorative film should be matched with the unwinding speed of the board to avoid the other item from stacking or jamming due to the unwinding speed of either the decorative film or the board being too fast.
[0060] S5. Cut the composite board into preset sizes to form sheets.
[0061] See Figure 2 As shown in the figure, an embodiment of the present invention provides a decorative film and sheet composite cutting device, which uses the method described above and includes a roller assembly for guiding, conveying and leveling the sheet. The roller assembly includes a guide roller 1, a detection guide roller 3, a pressure roller 5 and a leveling roller 6.
[0062] It also includes a heating device 4 and an air-cooling device 7. The roller assembly, heating device 4 and air-cooling device 7 work together to correct the surface quality of the sheet material while it is being conveyed.
[0063] The pressure roller 9 is used to press and bond the board and the decorative film together. A cutter 10 and a lifting device 11 are provided on one side of the pressure roller 9.
[0064] Optionally, the lifting device 11 is connected to a tray, which descends synchronously with the stacking height of the sheets.
[0065] Specifically, the equipment is arranged in sequence along the conveying direction of the sheet material as follows: guide roller 1, correction device 2, detection guide roller 3, heating device 4, pressure roller 5, correction device 2, staggered leveling roller 6, air cooling device 7, ion fan 8, upper and lower guide roller 1, upper and lower pressure roller 9, cutting knife 10, and lifting device 11.
[0066] The decorative film roll is equipped with a take-up roller 12 for taking up the release paper.
[0067] Since the technological improvements and beneficial effects of the decorative film and board composite cutting equipment are the same as those of the decorative film and board composite cutting method, the equipment will not be described in detail.
[0068] Working principle: The sheet material is released from the roll and guided from below the guide roller 1. The sheet material passes stably through the guide roller 2, then above the detection guide roller 3, and is heated sequentially by the first heating roller 41 and the second heating roller 42. It then passes below the pressure roller 9 and through the guide roller 2, followed by cooling through multiple leveling rollers 6 and the air-cooling device 7. The ion fan 8 eliminates static electricity and cleans dust from the cooled sheet material. After cleaning, the decorative film roll is unwound, releasing the adhesive-backed decorative film while the release paper is wound upwards. The decorative film and the sheet material are then laminated. Before lamination, the decorative film and the sheet material are guided by two guide rollers 1 positioned above and below. After lamination by two pressure rollers 9, the final product is formed. Finally, the product is cut into sheets by the cutter 10, which stacks the sheets on a pallet on the lifting device 11.
[0069] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A method of cutting a decorative film and a board composite, characterized by, The plate is released from the plate roll, the released plate is guided, the front and back surfaces of the plate are heated during the plate conveying, and the plate needs to be positionally calibrated before and after heating; The heated plate is flattened multiple times, and the plate is inserted and cooled during the flattening; The surface of the cleaned, flattened and cooled plate is cleaned, and the plate enters the film coating stage; In the film coating stage, the back-glued decorative film is released from the decorative film roll, and the decorative film and the cleaned plate are positioned and pressed to form a composite plate, wherein the release of the decorative film is synchronized with the winding of the release paper from the decorative film roll; The composite plate is cut into a predetermined size to form a sheet. During the heating of the plate, the front surface of the plate and the back surface of the plate are heated alternately, and each surface of the plate is heated at least twice.
2. The method of claim 1, wherein the decorative film and the sheet material are cut simultaneously. At least two heating devices (4) are arranged in the moving direction of the plate, the heating device (4) includes a first heating roller (41) and a second heating roller (42), and the rotation directions of the first heating roller (41) and the second heating roller (42) are opposite.
3. The method of claim 2, wherein the decorative film and the sheet material are cut simultaneously. The position of the plate is calibrated by the deviation corrector (2).
4. The method of claim 1, wherein the decorative film and the sheet material are cut simultaneously. A plurality of flattening rollers (6) are arranged in the moving direction of the plate, and the plurality of flattening rollers (6) are staggered on the front surface and the back surface of the plate to apply relative pressure to the plate.
5. The method of claim 1, wherein the decorative film and the sheet material are cut simultaneously. A plurality of air cooling devices (7) are arranged between two adjacent flattening rollers (6), and the plurality of air cooling devices (7) are staggered on the front surface and the back surface of the plate.
6. The method of claim 5, wherein the decorative film and the sheet material are cut simultaneously. An ion fan (8) is used to clean the surface of the flattened and cooled plate, the ion fan (8) neutralizes the static electricity on the surface of the plate by releasing positive and negative ions, and generates airflow to blow off impurities on the surface of the plate.
7. The method of claim 1, wherein the decorative film and the sheet material are cut simultaneously. In the film coating stage, a pair of pressure rollers (9) are arranged on the front surface and the back surface of the plate, and the line connecting the centers of the two pairs of pressure rollers (9) is perpendicular to the plate.
8. The method of claim 1, wherein the decorative film and the sheet material are cut simultaneously. The roller assembly is used for guiding, conveying and flattening the plate; 9. A decorative film and board composite cutting apparatus using the method according to any one of claims 1 to 8, characterized by, The heating device (4) and the air cooling device (7) cooperate with the roller assembly, the heating device (4) and the air cooling device (7) to correct the surface quality of the plate during conveying; The pressure roller (9) is used for pressing and combining the plate and the decorative film, and a cutting knife (10) and a lifting device (11) are arranged on one side of the pressure roller (9). The lifting device (11) is connected with a tray, and the tray descends synchronously with the accumulation height of the sheet.
10. The apparatus according to claim 9, wherein the apparatus further comprises a cutting device for cutting the decorative film and the plate material.