A coating system for producing a composite film and a production method thereof

Abstract

The application belongs to the technical field of composite film coating, and particularly relates to a coating system for producing a composite film and a production method thereof, wherein the equipment comprises: a production cavity; a PET pretreatment mechanism; a deviation rectifying mechanism for rectifying the PET plastic film when the film is conveyed; drying and ultraviolet curing for the PET plastic film; a release film unwinding assembly; a composite mechanism; through the composite mechanism, the use of two sets of mutually perpendicular guide rails, the synthesis process of simulation movement is realized, the film movement of the composite mechanism in the composite film pressing process is realized, and the pressing position and pressure can be adjusted according to different sizes of the roller; through the setting of the deviation rectifying mechanism, when the base material deviates in the transmission process, the rotating shaft diameter of the conveying roller can be adjusted according to the deviation distance, so as to realize the deviation rectification of the base material.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of composite film coating, in particular to a coating system for producing composite film and a production method thereof. BACKGROUND

[0002] Coating is a process of covering a plastic film on the surface of fabric, paper, film material, metal foil or plate in liquid or powder form for the purpose of corrosion prevention, insulation, decoration, etc. The main components of the coating liquid are dioctyl phthalate, aromatic isocyanate, aromatic isocyanate, carbamate, etc. The composite film after coating has the properties of corrosion resistance and wear resistance.

[0003] The patent with publication number CN202111504348.0 discloses a coating method for composite film, which includes a base film and a coating layer prepared by coating paint. The coating paint includes two-component polyurethane paint and polyester polyol dispersion. The coating method includes the following steps: step one coating, step two curing, and step three drying. The advantages of the present application are as follows: the coating paint is prepared from isocyanate prepolymer, hydroxyl resin and polyester polyol dispersion, and the solid content of the coating paint is high, so that the crosslinking reaction between resins can be completed by coating only once, meeting the requirements of mold pressing and greatly improving the production efficiency. Moreover, the resin and the curing agent in the coating paint are separated, which enables the coating paint to be cured and crosslinked at room temperature. In addition, the coating paint has high flatness and no orange peel leveling problem, excellent film forming performance, and good solution to the problems of mold pressing and sticking.

[0004] The above-mentioned device still has the following problems:

[0005] 1. The substrate conveying after coating lacks a deviation correction device. If the conveying position deviates, the film cannot be aligned during compounding, affecting production.

[0006] 2. During the compounding of the film, there is a lack of necessary adjustment mechanism and components. When the diameter of the compounding roller changes, effective production cannot be carried out. SUMMARY

[0007] The present application aims to provide a coating system for producing composite film and a production method thereof to solve the problems raised in the background art. To achieve the above-mentioned purpose, the following technical solution is provided: a coating system for producing composite film and a production method thereof, comprising:

[0008] Production cavity for fixing and placing the production equipment;

[0009] PET pretreatment mechanism arranged at the left end of the production cavity for unwinding and coating of PET plastic film and corona dust removal;

[0010] The correction mechanism, located at the left end of the rear wall of the production chamber, consists of a universal drive assembly and an adjustment assembly, and is used to correct the deviation of the PET plastic film during film conveying.

[0011] The curing component is fixedly installed in the middle of the rear wall of the production chamber and is used for drying and UV curing of PET plastic film.

[0012] The release film unwinding assembly is fixedly installed at the right end of the lower end wall of the production chamber and is used for unwinding the release film.

[0013] The laminating mechanism consists of a film-fitting assembly and a feed transmission assembly, which is fixedly installed at the right end of the lower end wall of the production chamber via the laminating cavity. There are two sets of film-fitting assemblies, which are symmetrically arranged at the left and right end walls of the laminating cavity, and are used for the film-fitting movement during the lamination of the release film for the lamination of the release film and the coated PET plastic film. The feed transmission assembly is used to drive the film-fitting assembly to complete the film-fitting movement.

[0014] The winding assembly is located in the middle of the lower end wall of the production chamber and is used for storing and winding the film for coating.

[0015] In this technical solution, the processing and production process of the composite film involves chemically treating two different substrates to combine them into a novel wear-resistant composite material. During the composite film processing, the two substrates are separately dust-removed, and one substrate is subjected to corona treatment to increase its surface roughness before coating. The coated PET substrate is then dried and UV-cured. Finally, the two substrates are pressed together by applying stress through rollers to complete the coating and composite film production process.

[0016] In any of the above technical solutions, the membrane assembly further includes:

[0017] The horizontal dividing block has two sets, which are horizontally set on the left and right end walls of the composite cavity respectively. A horizontal T-shaped groove is provided on the end face near the axis of symmetry.

[0018] There are two horizontal sliders, which are horizontally slidably set on the T-shaped slide groove of the horizontal dividing block;

[0019] There are two vertical dividing blocks, which are fixedly connected to the end face of the horizontal slider near the axis of symmetry, and are provided with T-shaped grooves in the vertical direction.

[0020] There are two vertical sliders, which are vertically slidable on the T-shaped groove of the vertical dividing block;

[0021] The support plate is horizontally welded to the middle of the two vertical sliders and is used for the motion synthesis of the horizontal and vertical sliders to achieve membrane motion.

[0022] The support frame is vertically welded to the upper end of the pallet, and the upper end is equipped with a composite roller for pressurizing and laminating the release film and PET film.

[0023] The bonding roller is rotatably mounted at the upper end of the composite cavity and is used to assist in the pressing of the release film and the PET film.

[0024] The friction transmission groove plate has a fixed color value at the lower end of the support plate, and a cylindrical pin is provided at the lower end for auxiliary transmission when the membrane moves.

[0025] The feed transmission assembly is fixedly installed in the lower chamber of the composite cavity and is used to drive the membrane assembly to complete the membrane movement.

[0026] In this technical solution, when laminating two substrates, the feeding transmission assembly is first activated, which drives the pallet to move. When the pallet moves, its vertical component motion is transformed into the displacement of the pallet and the vertical slider as a whole along the vertical direction of the vertical dividing block; its horizontal component motion is transformed into the feeding motion of the vertical dividing block and the horizontal slider as a whole along the horizontal direction of the horizontal dividing block; when the feeding transmission assembly drives the film-attaching assembly to move, the combined motion of the pallet is arc-shaped, that is, the movement path of the support frame and the composite roller set at the upper end of the pallet is also arc-shaped displacement; when the composite roller moves in an arc-shaped position, the composite roller itself gradually approaches the bonding roller until the composite roller and the bonding roller are bonded together, at which point the two substrates in the composite roller and the bonding roller are pressed together to achieve lamination.

[0027] In any of the above technical solutions, the feed transmission assembly further includes:

[0028] The rotating shaft is horizontally rotatably located at the lower ends of the left and right end walls of the composite cavity, with the left end positioned at the outer end of the composite cavity.

[0029] The membrane support arm is fixedly welded to the middle of the rotating shaft. A transmission groove is opened in the middle, and the lower end cylindrical pin of the friction transmission groove plate slides in the groove.

[0030] The driven gear is fixedly connected to the left end of the rotating shaft;

[0031] The membrane drive motor is fixedly installed in the middle of the left end face of the composite cavity. It is driven by a small diameter gear meshing with the driven gear and is used for the power output of the feed transmission component.

[0032] In this technical solution, when the feed transmission assembly drives the film-supporting assembly to move, the film-supporting drive motor is started first. The film-supporting drive motor drives the driven gear, the rotating shaft and the film-supporting support arm to rotate on a fixed axis through the gear. When the film-supporting support arm rotates, the arc groove surface of the film-supporting support arm rubs against the friction transmission groove plate. As the rotation angle of the film-supporting support arm increases, it drives the friction transmission groove plate to move forward and upward or backward and downward. At this time, through the feed transmission assembly, the film-supporting movement of the composite roller and the bonding roller during the composite film processing is finally realized.

[0033] In any of the above technical solutions, the universal joint drive assembly further includes:

[0034] The alignment motor is fixedly installed on the rear wall of the production chamber;

[0035] The first buckle, in the shape of a horizontally placed U, is fixedly installed at the left end of the correction motor and rotates coaxially with the first buckle;

[0036] The ten-eighths is cross-shaped, with holes and slots at the four ends of the cross, and holes and slots at the left and right ends for connection; it is rotatably set in the middle of the U-shape of the first buckle by two cylindrical pins at the front and rear.

[0037] The second buckle is in the shape of a vertically placed U, and is rotatably connected to the upper and lower ends of the second buckle by two cylindrical pins.

[0038] The alignment roller is fixedly connected to the middle of the left end face of the second buckle.

[0039] In this technical solution, when the substrate is conveyed and corrected, the correction motor is always rotating. When the profile needs to be corrected, the rotation angle of the conveyor roller needs to be actively changed. The four sets of holes and slots set by the ten-byte structure realize the non-coaxial transmission between the correction motor and the correction roller through four rotating pins set up vertically and horizontally.

[0040] In any of the above technical solutions, the further adjusted components include:

[0041] The lifting shaft is fixedly connected to the left end of the straightening roller, rotates coaxially with the straightening roller, and has a stop block at one end;

[0042] The pull ring is slidably sleeved on the lifting shaft, and its upper end is vertically provided with a threaded rod;

[0043] A threaded cylinder, threadedly connected to the upper end of the screw of the pull ring;

[0044] The shock-absorbing spring is fixedly connected between the pull ring and the threaded cylinder for damping vibration;

[0045] The swivel ring is rotatably connected to the upper end of the threaded cylinder. The swivel ring is ring-shaped and is sleeved on the rear end wall of the production chamber by a cylindrical pin.

[0046] In this technical solution, when the substrate is being conveyed and corrected, the correction motor is always rotating. At this time, the threaded cylinder rotates, and the lower end of the threaded cylinder and the threaded rod of the pull ring are driven by the thread, which changes the distance between the pull ring and the rotating ring. When the distance changes, the pull ring is no longer in a horizontal position. At this time, the rotation shaft diameter of the lifting shaft is offset, which drives the substrate to correct its conveying position.

[0047] In any of the above technical solutions, the PET pretreatment mechanism further includes:

[0048] PET unwinder, used for unwinding PET coils;

[0049] The corona treatment unit is located at the right end of the PET unwinder and is used for corona treatment of the PET film unwound at the PET unwinder.

[0050] The first pull sheet uses two sets of rollers, one above the other, to pull and convey the corona-treated PET film; and the right end of the first pull sheet is equipped with a first dust removal section for dust removal from the PET.

[0051] The coating assembly is fixedly installed at the right end of the first dust removal section. It has two bonding rollers on it and a coating liquid tank at the lower end for coating PET.

[0052] In this technical solution, when treating the PET substrate, the substrate is first corona treated by a corona electrode assembly to increase the surface roughness and surface energy of the substrate, which facilitates the spreading of the coating liquid. The first puller is activated, and the upper and lower sets of rollers pull and convey the corona-treated PET film. The first dust removal unit removes dust from the surface of the substrate, and the coating is completed by the coating assembly.

[0053] In any of the above technical solutions, the release film unwinding assembly further includes:

[0054] Release film unwinder, used for unwinding release film;

[0055] The second pull tab is fixedly set at the left end of the release film unwinder, and the release film is pulled by two sets of rollers set at the top and bottom.

[0056] The second dust removal section is located at the right end of the second pull sheet and is used for dust removal of the release film.

[0057] In this technical solution, the second pulling sheet and the second dust removal section are used to complete the pulling and dust removal of the release film, which facilitates the film lamination.

[0058] In any of the above technical solutions, the winding component further includes:

[0059] The storage cavity is fixedly located at the left end of the composite mechanism;

[0060] Several storage wheels are evenly arranged between the front and rear end walls of the storage wheel, and all of them can rotate freely for conveying the composite membrane.

[0061] The third roller is rotatably mounted on the right end of the composite mechanism and rotates horizontally via a motor; it is used for stretching the composite film.

[0062] The take-up roller is fixedly installed at the left end of the storage cavity and rotates horizontally by a motor for automatic take-up of the formed composite film.

[0063] In this technical solution, the formed composite film is stored by a storage roller, and then the composite film is wound up by a take-up roller.

[0064] In any of the above technical solutions, the curing component further includes:

[0065] The oven is fixedly installed on the upper wall of the production chamber. The left end of the oven is equipped with a heating plate for drying the PET film conveyed by the correction mechanism. The right end of the oven is equipped with an ultraviolet curing lamp for ultraviolet curing of the PET film.

[0066] In this technical solution, the coating film is dried and cured by the curing component, creating the conditions for lamination.

[0067] According to the above-mentioned coating system and production method for producing composite films, its usage includes the following steps:

[0068] Step 1: Start the first pull sheet, the second pull sheet, and the third pull roller. At this time, the first pull sheet drives the PET unwinder to unwind the PET. When the PET is conveyed to the corona treatment unit, the corona treatment of the PET substrate is completed. The treated PET substrate is transported to the coating unit to complete the coating operation. At the same time, the second pull sheet drives the release film unwinder to unwind the release film. Meanwhile, the first dust removal unit and the second dust removal unit complete the dust removal of the two types of films.

[0069] Step 2: After coating, the PET substrate passes through the correction mechanism. Since the PET substrate has undergone corona treatment and coating process, when the conveying position of the PET substrate is deviated, the correction mechanism is adjusted to make the PET substrate be conveyed horizontally along the set composite path and sent to the curing component for drying, heating and UV curing of the coating material.

[0070] Step 3: When the two composite materials pass through the composite mechanism, the feed transmission component is activated, and the film-fitting component is driven by gear transmission to move the film-fitting component, pressing the two substrates together to complete the composite process;

[0071] Step 4: The third pull roller, which was started in Step 1, pulls the already compressed composite film for conveying. At this time, the take-up roller rotates, and the composite film is wound up by the storage roller.

[0072] The beneficial effects of this invention are:

[0073] 1. By setting up a composite mechanism and using two sets of mutually perpendicular guide rails, the motion synthesis process is simulated, realizing the film-side movement of the composite mechanism during the composite film pressing process, and the pressing position and pressure can be adjusted according to rollers of different sizes;

[0074] 2. By using a set correction mechanism with universal joint transmission, when the substrate deviates during transmission, the rotation shaft diameter of the conveyor roller can be adjusted according to the distance of the deviation, thereby achieving correction of the substrate. Attached Figure Description

[0075] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0076] Figure 2 This is a schematic diagram of the PET pretreatment mechanism in this invention;

[0077] Figure 3 This is a cross-sectional view of the composite mechanism in this invention;

[0078] Figure 4 This is a three-dimensional structural schematic diagram of the composite mechanism in this invention;

[0079] Figure 5 This is a three-dimensional structural schematic diagram of the correction mechanism in this invention;

[0080] Figure 6 This is a three-dimensional structural schematic diagram of the universal drive assembly in this invention;

[0081] Figure 7 This is a three-dimensional schematic diagram of the ten bytes in this invention.

[0082] The attached figures are labeled as follows: 100, Production chamber; 200, PET pretreatment mechanism; 210, PET unwinder; 220, Corona discharge assembly; 230, First sheet puller; 240, First dust removal section; 250, Coating assembly; 300, Web guiding mechanism; 310, Universal drive assembly; 311, Web guiding motor; 312, First buckle; 313, Cross-joint; 314, Second buckle; 315, Web guiding roller; 320, Adjustment assembly; 321, Lifting shaft; 322, Pull ring; 323, Threaded cylinder; 324, Shock-absorbing spring; 325, Rotary ring; 400, Curing assembly; 410, Oven; 420, Heating plate; 430, UV curing lamp; 500, Release film. 510. Unwinding assembly; 520. Release film unwinder; 530. Second pull sheet; 600. Second dust removal section; 601. Composite mechanism; 601. Composite cavity; 610. Film-mounting assembly; 611. Horizontal dividing block; 612. Horizontal slider; 613. Vertical dividing block; 614. Vertical slider; 615. Support plate; 616. Support frame; 617. Composite roller; 618. Bonding roller; 619. Friction drive groove plate; 620. Feed drive assembly; 621. Rotating shaft; 622. Film-mounting support arm; 623. Driven gear; 624. Film-mounting drive motor; 700. Rewinding assembly; 710. Storage cavity; 720. Storage wheel; 730. Third pull roller; 740. Rewinding roller. Detailed Implementation

[0083] 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.

[0084] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0085] It should be noted that 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 are not limited in number; 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.

[0086] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0087] It should be noted that, in this application, 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.

[0088] Example 1:

[0089] like Figure 1 As shown, this embodiment provides a coating system and method for producing composite films, including:

[0090] Production chamber 100 is used for fixing and placing production equipment;

[0091] The PET pretreatment unit 200 is located at the left end of the production chamber 100 and is used for unwinding, coating and corona dust removal of PET plastic film.

[0092] The correction mechanism 300 is located at the left end of the rear wall of the production chamber 100. It consists of a universal drive assembly 310 and an adjustment assembly 320 and is used to correct the deviation of the PET plastic film during film conveying.

[0093] The curing component 400 is fixedly installed in the middle of the rear end wall of the production chamber 100 and is used for drying and UV curing of PET plastic film.

[0094] Release film unwinding assembly 500 is fixedly installed at the right end of the lower end wall of production chamber 100 and is used for unwinding release film;

[0095] The laminating mechanism 600 consists of a film-fitting assembly 610 and a feed transmission assembly 620, and is fixedly installed at the right end of the lower end wall of the production chamber 100 via the laminating cavity 601. There are two sets of film-fitting assemblies 610, which are symmetrically arranged at the left and right end walls of the laminating cavity 601, and are used for the film-fitting movement during the lamination of the release film for the lamination of the release film and the coated PET plastic film. The feed transmission assembly 620 is used to drive the film-fitting assembly 610 to complete the film-fitting movement.

[0096] The winding assembly 700 is located in the middle of the lower end wall of the production chamber 100 and is used for storing and winding the film for coating.

[0097] In this technical solution, the processing and production process of the composite film involves chemically treating two different substrates to combine them into a novel wear-resistant composite material. During the composite film processing, the two substrates are separately dust-removed, and one substrate is subjected to corona treatment to increase its surface roughness before coating. The coated PET substrate is then dried and UV-cured. Finally, the two substrates are pressed together by applying stress through rollers to complete the coating and composite film production process.

[0098] like Figure 3 and Figure 4 As shown, in this embodiment, specifically, the membrane assembly 610 includes:

[0099] The horizontal dividing block 611 has two sets, which are horizontally set on the left and right end walls of the composite cavity 601 respectively, and a horizontal T-shaped groove is provided on the end face near the axis of symmetry.

[0100] Two horizontal sliders 612 are provided and are horizontally slidably set on the T-shaped groove of the horizontal dividing block 611;

[0101] There are two vertical dividing blocks 613, which are fixedly connected to the end face of the horizontal slider 612 near the axis of symmetry, and are provided with T-shaped grooves in the vertical direction.

[0102] Two vertical sliders 614 are vertically slidable on the T-shaped groove of the vertical dividing block 613;

[0103] The support plate 615 is horizontally welded to the middle of the two vertical sliders 614 and is used for the motion synthesis of the horizontal slider 612 and the vertical slider 614 to realize the membrane motion.

[0104] The support frame 616 is vertically welded to the upper end of the tray 615, and the upper end is equipped with a composite roller 617 for pressurized lamination of the release film and the PET film.

[0105] The bonding roller 618 is rotatably mounted on the upper end of the composite cavity 601 and is used to assist in the bonding of the release film and the PET film.

[0106] Friction transmission groove plate 619, with fixed color value at the lower end of support plate 615, and cylindrical pin at the lower end for auxiliary transmission when the membrane moves;

[0107] The feed transmission assembly 620 is fixedly installed in the lower end chamber of the composite cavity 601 and is used to drive the membrane assembly 610 to complete the membrane movement.

[0108] In this technical solution, when two substrates are laminated, the feed transmission assembly 620 is first activated. The feed transmission assembly 620 drives the pallet 615 to move. When the pallet 615 moves, its vertical component motion is converted into the overall displacement of the pallet 615 and the vertical slider 614 along the vertical direction of the vertical dividing block 613; its horizontal component motion is converted into the overall feed motion of the vertical dividing block 613 and the horizontal slider 612 along the horizontal direction of the horizontal dividing block 611; when the feed transmission... When component 620 drives the film assembly 610 to move, the combined movement of the support plate 615 is arc-shaped. That is, the overall movement path of the support frame 616 and the composite roller 617 set on the upper end of the support plate 615 is also arc-shaped. When the composite roller 617 moves in an arc-shaped position, the composite roller 617 gradually approaches the bonding roller 618 until the composite roller 617 and the bonding roller 618 are bonded together. At this time, the two substrates in the composite roller 617 and the bonding roller 618 are pressed together to achieve lamination.

[0109] like Figure 3 and Figure 4 As shown, in this embodiment, specifically, the feed transmission assembly 620 includes:

[0110] The rotating shaft 621 is horizontally rotatably located at the lower ends of the left and right end walls of the composite cavity 601, with the left end positioned at the outer end of the composite cavity 601.

[0111] The membrane support arm 622 is fixedly welded to the middle of the rotating shaft 621. A transmission groove is opened in the middle, and the lower end cylindrical pin of the friction transmission groove plate 619 slides in the groove.

[0112] Driven gear 623 is fixedly connected to the left end of rotating shaft 621;

[0113] The membrane drive motor 624 is fixedly installed at the middle of the left end face of the composite cavity 601. It is driven by the small diameter gear and the driven gear 623 through meshing and transmission, and is used for the power output of the feed transmission assembly 620.

[0114] In this technical solution, when the feed transmission assembly 620 drives the film-supporting assembly 610 to move, the film-supporting drive motor 624 is started first. The film-supporting drive motor 624 drives the driven gear 623, the rotating shaft 621 and the film-supporting support arm 622 to rotate on a fixed axis through the gear. When the film-supporting support arm 622 rotates, the arc groove surface of the film-supporting support arm 622 frictionally drives the friction transmission groove plate 619. As the rotation angle of the film-supporting support arm 622 increases, it drives the friction transmission groove plate 619 to move forward and upward or backward and downward. At this time, through the feed transmission assembly 620, the film-supporting movement of the composite roller 617 and the bonding roller 618 during the composite film processing is finally realized.

[0115] Example 2:

[0116] This embodiment provides, in addition to the technical solutions included in the above embodiments, the following technical features.

[0117] like Figure 5 , Figure 6 and Figure 7 As shown, in this embodiment, the universal joint assembly 310 includes:

[0118] The correction motor 311 is fixedly installed on the rear end wall of the production chamber 100;

[0119] The first buckle 312 is in the shape of a horizontally placed U and is fixedly installed at the left end of the correction motor 311, rotating coaxially with the first buckle 312.

[0120] The ten-eighths element 313 is cross-shaped, with holes and slots at the four ends of the cross, and holes and slots at the left and right ends for connection; it is rotatably set in the middle of the U-shape of the first buckle 312 by two cylindrical pins at the front and rear.

[0121] The second buckle 314 is in the shape of a vertically placed U, and is rotatably connected to the upper and lower ends of the second buckle 314 by two cylindrical pins.

[0122] The alignment roller 315 is fixedly connected to the middle of the left end face of the second buckle 314.

[0123] In this technical solution, when the substrate is conveyed and corrected, the correction motor 311 is always rotating. When the profile needs to be corrected, the rotation angle of the conveying roller needs to be actively changed. The four sets of holes and slots set in the cross-shaped element 313 realize the non-coaxial transmission between the correction motor 311 and the correction roller 315 through four rotating pins set up vertically and horizontally.

[0124] like Figure 5 As shown, in this embodiment, specifically, the adjustment component 320 includes:

[0125] The lifting shaft 321 is fixedly connected to the left end of the straightening roller 315, rotates coaxially with the straightening roller 315, and has a stop block at one end;

[0126] A pull ring 322 is slidably sleeved on a lifting shaft 321, and a threaded rod is vertically provided at its upper end;

[0127] Threaded cylinder 323 is threadedly connected to the upper end of the screw of pull ring 322;

[0128] The shock-absorbing spring 324 is fixedly connected between the pull ring 322 and the threaded sleeve 323 for damping vibration;

[0129] The swivel ring 325 is rotatably connected to the upper end of the threaded cylinder 323. The swivel ring 325 is ring-shaped and is sleeved on the rear end wall of the production chamber 100 by a cylindrical pin.

[0130] In this technical solution, when the substrate is being conveyed and corrected, the correction motor 311 is always rotating. At this time, the threaded cylinder 323 rotates, and the lower end of the threaded cylinder 323 is threadedly driven with the threaded rod of the pull ring 322, which changes the distance between the pull ring 322 and the rotating ring 325. When the distance changes, the pull ring 322 is no longer in a horizontal position. At this time, the rotation diameter of the lifting shaft 321 is offset, which drives the substrate to correct the conveying position.

[0131] Example 3:

[0132] This embodiment provides, in addition to the technical solutions included in the above embodiments, the following technical features.

[0133] like Figure 2 As shown, in this embodiment, the PET pretreatment mechanism 200 includes:

[0134] PET unwinder 210, used for unwinding PET;

[0135] The corona component 220 is located at the right end of the PET unwinder 210 and is used for corona treatment of the unwound PET film at the PET unwinder 210.

[0136] The first pull sheet 230 conveys the corona-treated PET film through two sets of rollers arranged at the top and bottom; and the right end of the first pull sheet 230 is provided with a first dust removal section 240 for dust removal of the PET.

[0137] The coating assembly 250 is fixedly installed at the right end of the first dust removal section 240. It has two bonding rollers on it and a coating liquid tank at the lower end for coating PET.

[0138] In this technical solution, when treating the PET substrate, the substrate is first corona treated by the corona component 220 to increase the surface roughness and surface energy of the substrate, which is conducive to the spreading of the coating liquid. The first pull sheet 230 is activated, in which the upper and lower sets of rollers realize the film pulling and conveying of the corona treated PET, and the dust on the surface of the substrate is removed by the first dust removal section 240. Finally, the coating is completed by the coating component 250.

[0139] Example 4:

[0140] This embodiment provides, in addition to the technical solutions included in the above embodiments, the following technical features.

[0141] like Figure 1 As shown, in this embodiment, the release film unwinding assembly 500 includes:

[0142] Release film unwinder 510, used for unwinding release film;

[0143] The second pull tab 520 is fixedly set at the left end of the release film unwinder 510, and pulls the release film through two sets of rollers.

[0144] The second dust removal section 530 is located at the right end of the second pull sheet 520 and is used for dust removal of the release film.

[0145] In this technical solution, the second pulling sheet 520 and the second dust removal part 530 are used to complete the pulling and dust removal of the release film, which facilitates the film lamination.

[0146] Example 5:

[0147] This embodiment provides, in addition to the technical solutions included in the above embodiments, the following technical features.

[0148] like Figure 1 As shown, in this embodiment, the winding assembly 700 includes:

[0149] Storage cavity 710 is fixedly installed at the left end of composite mechanism 600;

[0150] Storage wheels 720 are provided in several units, evenly arranged between the front and rear end walls of storage wheels 720, and all of them can rotate freely for conveying composite membranes;

[0151] The third roller 730 is rotatably mounted at the right end of the composite mechanism 600 and rotates horizontally via a motor; it is used for stretching the composite film.

[0152] The take-up roller 740 is fixedly installed at the left end of the storage cavity 710 and rotates horizontally by a motor for automatic take-up of the formed composite film.

[0153] In this technical solution, the formed composite film is stored by the storage roller 720, and then the composite film is wound up by the winding roller 740.

[0154] Example 6:

[0155] This embodiment provides, in addition to the technical solutions included in the above embodiments, the following technical features.

[0156] like Figure 2 As shown, in this embodiment, the curing component 400 includes:

[0157] The oven 410 is fixedly installed on the upper wall of the production chamber 100. The left end of the oven is equipped with a heating plate 420 for drying the PET film conveyed by the correction mechanism 300. The right end of the oven 410 is equipped with an ultraviolet curing lamp 430 for ultraviolet curing of the PET film.

[0158] In this technical solution, the curing component 400 completes the drying and curing of the coated film, creating the conditions for lamination.

[0159] As described above, a coating system and its production method for producing composite films include the following steps:

[0160] Step 1: Start the first pull sheet 230, the second pull sheet 520 and the third pull roller 730. At this time, the first pull sheet 230 drives the PET unwinder 210 to unwind the PET. When the PET is conveyed to the corona assembly 220, the corona treatment of the PET substrate is completed. The treated PET substrate is transported to the coating assembly 250 to complete the coating operation. At the same time, the second pull sheet 520 drives the release film unwinder 510 to unwind the release film. Meanwhile, the first dust removal unit 240 and the second dust removal unit 530 complete the dust removal of the two types of films.

[0161] Step 2: After coating, the PET substrate passes through the correction mechanism 300. Due to the corona treatment and coating process, when the conveying position of the PET substrate deviates, the correction mechanism 300 is adjusted to make the PET substrate horizontally conveyed along the set composite path and sent to the curing component 400 for drying, heating and UV curing of the coating material.

[0162] Step 3: When the two composite materials pass through the composite mechanism 600, the feed transmission assembly 620 is started, and the film-fitting assembly 610 is driven by gear transmission to perform film-fitting movement, pressing the two substrates together to complete the composite process.

[0163] Step 4: The third pull roller 730, which was started in Step 1, pulls the already compressed composite film for conveying. At this time, the take-up roller 740 rotates, and the composite film is wound up by the storage roller 720.

[0164] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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. A coating system for producing composite films, characterized in that, include: Production chamber (100) is used for fixing and placing production equipment; A PET pretreatment unit (200) is located at the left end of the production chamber (100) and is used for unwinding, coating and corona dust removal of PET plastic film. The correction mechanism (300) is located at the left end of the rear end wall of the production chamber (100), and consists of a universal drive assembly (310) and an adjustment assembly (320), and is used to correct the deviation of the PET plastic film during film conveying. The curing component (400) is fixedly disposed in the middle of the rear end wall of the production chamber (100) and is used for drying and UV curing of PET plastic film; Release film unwinding assembly (500) is fixedly installed at the right end of the lower end wall of the production chamber (100) for unwinding the release film; The composite mechanism (600) consists of a film-fitting assembly (610) and a feed transmission assembly (620), and is fixedly installed at the right end of the lower end wall of the production chamber (100) via the composite cavity (601). The film-fitting assembly (610) has two sets, which are symmetrically arranged at the left and right end walls of the composite cavity (601) respectively, and are used for the film-fitting movement during the release film lamination for the lamination of the release film and the coated PET plastic film. The feed transmission assembly (620) is used to drive the film-fitting assembly (610) to complete the film-fitting movement. A winding assembly (700) is disposed in the middle of the lower end wall of the production chamber (100) for storing and winding the film.

2. The coating system for producing composite films according to claim 1, characterized in that, The membrane assembly (610) includes: two sets of horizontal dividing blocks (611), which are respectively horizontally arranged on the left and right end walls of the composite cavity (601), and a horizontal T-shaped groove is provided on one end face near the axis of symmetry. Two horizontal sliders (612) are horizontally slidably disposed on the T-shaped groove of the horizontal dividing block (611); Two vertical dividing blocks (613) are fixedly connected to the near-symmetrical axis end face of the horizontal slider (612), and T-shaped grooves are provided on them in the vertical direction; Two vertical sliders (614) are vertically slidably disposed on the T-shaped groove of the vertical dividing block (613); The support plate (615) is horizontally welded to the middle of the two vertical sliders (614) for the motion synthesis of the horizontal slider (612) and the vertical slider (614) to realize the membrane motion; A support frame (616) is vertically welded to the upper end of the tray (615), and a composite roller (617) is rotatably provided at the upper end for pressurizing the release film and the PET film. A bonding roller (618) is rotatably disposed at the upper end of the composite cavity (601) for assisting in the pressing of the release film and the PET film; Friction transmission groove plate (619) with fixed color value at the lower end of the support plate (615) and cylindrical pin at the lower end for auxiliary transmission when the membrane moves. The feed transmission assembly (620) is fixedly disposed in the lower end chamber of the composite cavity (601) and is used to drive the membrane assembly (610) to complete the membrane movement.

3. A coating system for producing composite films according to claim 2, characterized in that, The feed transmission assembly (620) includes: a rotating shaft (621), which is horizontally rotatably disposed at the lower ends of the left and right end walls of the composite cavity (601), with the left end positioned at the outer end of the composite cavity (601); The membrane support arm (622) is fixedly welded to the middle of the rotating shaft (621), and a transmission groove is opened in the middle. The lower end cylindrical pin of the friction transmission groove plate (619) slides in the transmission groove. The driven gear (623) is fixedly connected to the left end of the rotating shaft (621); A membrane drive motor (624) is fixedly installed at the middle of the left end face of the composite cavity (601). It meshes with the driven gear (623) through a small diameter gear and is used for the power output of the feed transmission assembly (620).

4. A coating system for producing composite films according to claim 1, characterized in that, The universal drive assembly (310) includes: a correction motor (311), which is fixedly installed on the rear end wall of the production chamber (100); The first buckle (312) is in the shape of a horizontally placed U and is fixedly installed at the left end of the correction motor (311), and rotates coaxially with the first buckle (312). The ten-eighths (313) is cross-shaped, with holes and slots at the four ends of the cross, and holes and slots at the left and right ends for connection; it is rotatably set in the middle of the U-shape of the first buckle (312) by two cylindrical pins at the front and rear. The second buckle (314) is in the shape of a vertically placed U and is rotatably connected to the upper and lower ends of the second buckle (314) by two cylindrical pins. The correction roller (315) is fixedly connected to the middle of the left end face of the second buckle (314).

5. A coating system for producing composite films according to claim 4, characterized in that, The adjustment assembly (320) includes: a lifting shaft (321), which is fixedly connected to the left end of the correction roller (315), rotates coaxially with the correction roller (315), and has a stop block at one end; A pull ring (322) is slidably sleeved on the lifting shaft (321), and a threaded rod is vertically provided at its upper end; A threaded cylinder (323) is threadedly connected to the upper end of the screw of the pull ring (322); A shock-absorbing spring (324) is fixedly connected between the pull ring (322) and the threaded cylinder (323) for damping vibration; A swivel ring (325) is rotatably connected to the upper end of the threaded cylinder (323). The swivel ring (325) is annular and is sleeved on the rear end wall of the production chamber (100) by a cylindrical pin.

6. A coating system for producing composite films according to claim 1, characterized in that, The PET pretreatment mechanism (200) includes: a PET unwinder (210) for unwinding PET; A corona assembly (220) is provided at the right end of the PET unwinder (210) for corona treatment of the unwound PET film at the PET unwinder (210); The first pull sheet (230) conveys the corona-treated PET film through two sets of rollers arranged at the top and bottom; and the right end of the first pull sheet (230) is provided with a first dust removal part (240) for dust removal of PET. The coating assembly (250) is fixedly installed at the right end of the first dust removal part (240), and has two bonding rollers on it and a coating liquid tank at the lower end for coating PET.

7. A coating system for producing composite films according to claim 1, characterized in that, The release film unwinding assembly (500) includes: a release film unwinder (510) for unwinding the release film; The second pull tab (520) is fixedly installed at the left end of the release film unwinder (510) and pulls the release film through two sets of rollers. The second dust removal section (530) is located at the right end of the second pull tab (520) and is used for dust removal of the release film.

8. A coating system for producing composite films according to claim 2, characterized in that, The winding assembly (700) includes a storage cavity (710) fixedly disposed at the left end of the composite mechanism (600); Storage wheels (720) are provided in several manner, evenly arranged between the front and rear end walls of the storage wheels (720), and each of them can rotate freely for conveying the composite membrane; The third roller (730) is rotatably mounted on the right end of the composite mechanism (600) and rotates horizontally via a motor for pulling the composite film. A take-up roller (740) is fixedly installed at the left end of the storage cavity (710) and rotates horizontally by a motor for automatic take-up of the formed composite film.

9. A coating system for producing composite films according to claim 4, characterized in that, The curing assembly (400) includes: an oven (410) fixedly disposed on the upper wall of the production chamber (100), with a heating plate (420) at the left end of the oven for drying the PET film conveyed by the correction mechanism (300), and an ultraviolet curing lamp (430) at the right end of the oven (410) for ultraviolet curing of the PET film.

10. A method for producing a composite film using the coating system of claim 9, characterized in that: Step 1: Start the first pull sheet (230), the second pull sheet (520) and the third pull roller (730). At this time, the first pull sheet (230) drives the PET unwinder (210) to unwind the PET. When the PET is conveyed to the corona assembly (220), the corona treatment of the PET substrate is completed. The treated PET substrate is transported to the coating assembly (250) to complete the coating operation. At the same time, the second pull sheet (520) drives the release film unwinder (510) to unwind the release film. Meanwhile, the first dust removal unit (240) and the second dust removal unit (530) complete the dust removal of the two types of films. Step 2: After the PET substrate is coated, it passes through the correction mechanism (300). Since the PET substrate has undergone the corona treatment and coating process, when the conveying position of the PET substrate is deviated, the correction mechanism (300) is adjusted to make the PET substrate be conveyed horizontally along the set composite path and sent to the curing component (400) for drying and heating of the coating material and UV curing treatment. Step 3: When the two composite materials pass through the composite mechanism (600), the feed transmission assembly (620) is started, and the film assembly (610) is driven by gear transmission to perform film-pressing movement, thereby pressing the two substrates together to complete the composite process; Step 4: The third pull roller (730) started in Step 1 pulls the already compressed composite film for conveying. At this time, the take-up roller (740) rotates and the composite film is wound up by the storage roller (720).

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