A thermal laminating device for automatic edge alignment of plates

Abstract

The present invention relates to the technical field of sheet film laminating equipment, which discloses a thermal laminating equipment for automatic edge alignment of sheet materials, including a film placing mechanism, a film scratching mechanism, a vacuum roller mechanism, a film spreading mechanism, a detection mechanism, a film laminating mechanism, a frame and a controller, wherein the film placing mechanism, the film scratching mechanism, the vacuum roller mechanism, the film spreading mechanism, the detection mechanism and the film laminating mechanism are all installed on the frame, the film placing mechanism is provided with a film, and the film passes through the film scratching mechanism, the vacuum roller mechanism and the film spreading mechanism in sequence and is connected to the film laminating mechanism, the detection mechanism is located at the discharge end of the film laminating mechanism, and the film placing mechanism, the film scratching mechanism, the vacuum roller mechanism, the film spreading mechanism, the detection mechanism and the film laminating mechanism are all connected to the controller. The present invention can achieve high-precision laminating of sheet materials and films, reduce film waste, and prevent wrinkles throughout the entire process.

Description

Technical Field

[0001] The present invention relates to the technical field of plate film laminating equipment, and in particular to a plate automatic edge-aligning thermal film laminating equipment. Background Art

[0002] Color-coated sheet filming is a process of covering the surface of color-coated metal sheets (such as galvanized sheets, aluminum sheets, etc.) with a protective film. Its core purpose is to prevent the surface of the sheets from being scratched or corroded during transportation, storage and processing.

[0003] In the process of applying protective film to the surface of sheet materials (such as color-coated sheets), traditional film-applying equipment has the following significant defects: 1. Low film width matching accuracy: The film-unloading mechanism cannot dynamically follow the changes in the length of the sheet material. The length of the film needs to be preset and longer than the sheet material (margin > 20mm), requiring a secondary trimming process, resulting in a film waste rate of up to 15%-20%. 2. Large edge positioning deviation: Relying on manual visual or fixed sensor edge adjustment, it is unable to respond in real time to sheet deviation (deviation > 2mm), resulting in film coverage misalignment, exposed edges, or wrinkles. 3. Poor coordination of functional modules: The flattening, trimming, and pressing mechanisms are adjusted independently, resulting in a delayed response, which affects the flatness of the film (wrinkle rate > 10%). Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above prior art and to provide a thermal lamination device for automatically aligning the edges of plates.

[0005] The purpose of the present invention is achieved through the following technical solutions: A thermal film laminating device for automatic edge alignment of plates includes a film placing mechanism, a film scratching mechanism, a vacuum roller mechanism, a film spreading mechanism, a detection mechanism, a film laminating mechanism, a frame and a controller, wherein the film placing mechanism, the film scratching mechanism, the vacuum roller mechanism, the film spreading mechanism, the detection mechanism and the film laminating mechanism are all installed on the frame, the film placing mechanism is provided with a film, and the film passes through the film scratching mechanism, the vacuum roller mechanism and the film spreading mechanism in sequence and is connected to the film laminating mechanism, the detection mechanism is located at the discharge end of the film laminating mechanism, and the film placing mechanism, the film scratching mechanism, the vacuum roller mechanism, the film spreading mechanism, the detection mechanism and the film laminating mechanism are all connected to the controller. This device can achieve high-precision laminating of plates and films, reduce film waste, and prevent wrinkles throughout the entire process.

[0006] A more preferred option is that the detection mechanism includes a detection bracket, a detection linear module, a measuring sliding base, a wire encoder, a detection transverse slide rail, a detection transverse slider, a wire steering roller, a sliding base, and a measuring roller. The detection linear module and the wire encoder are both mounted on the frame via the detection bracket. The detection transverse slide rail is connected to the movable end of the detection linear module via the measuring sliding base. The wire steering roller is located on the side of the detection transverse slide rail away from the wire encoder. The sliding base is slidably connected to the detection transverse slide rail via the detection transverse slider. The wire of the wire encoder is connected to the sliding base via the wire steering roller. The measuring roller is rotatably connected to the sliding base. The measuring roller is located at the discharge end of the film laminating mechanism. The detection linear module and the wire encoder are both connected to the controller. This detection mechanism can achieve ±0.1mm level board edge tracking and closed-loop control of the film unwinding mechanism and the film unwinding mechanism.

[0007] A more preferred option is that the film-unfolding mechanism includes a film-unfolding bracket, a transverse film-unfolding rail, a film-unfolding sliding bracket, a second screw, a second transmission box, a film-unfolding motor, a guide roller, a knife holder rod, a longitudinal film-cutting knife, and a flattening roller. The film-unfolding bracket is mounted on the frame, the film-unfolding sliding bracket is slidably connected to the film-unfolding bracket via the transverse film-unfolding rail, the guide roller and the flattening roller are both rotatably connected to the film-unfolding sliding bracket, the longitudinal film-cutting knife is fixedly connected to the film-unfolding sliding bracket via the knife holder rod, the knife holder rod is located between the guide roller and the flattening roller, the film-unfolding motor is connected to one end of the second screw via the second transmission box, the other end of the second screw is threadedly connected to the film-unfolding sliding bracket, and the film-unfolding motor is connected to the controller. This film-unfolding mechanism can achieve film flattening, film trimming, and film guiding, and dynamically adapt to changes in the width of the sheet material.

[0008] A more preferred option is that the film-cutting mechanism includes a film-cutting structure and a film-pushing structure, both of which are mounted on the frame and positioned on either side of the film. The film-cutting structure and the film-pushing structure match each other and are both connected to the controller. This film-cutting mechanism uses the film-pushing structure to tighten the film, allowing the film-cutting structure to cut accurately.

[0009] A more preferred option is a film cutting structure that includes a film cutting bracket, a linear film cutting module, a film cutting cylinder, and a transverse film cutting knife. The linear film cutting module is mounted to the frame via the film cutting bracket, and the transverse film cutting knife is mounted to the movable end of the linear film cutting module via the film cutting cylinder. The transverse film cutting knife is compatible with the film pushing structure, and both the film cutting cylinder and the linear film cutting module are connected to the controller. This film cutting structure is capable of cutting full-width films.

[0010] A more optimal option is that the film-pushing structure includes a film-pushing cylinder, a film-pushing bracket, a longitudinal film-pushing slide rail, a sliding gear seat, a fixed rack, and a film-pushing roller. The film-pushing cylinder, the longitudinal film-pushing slide rail, and the fixed rack are all mounted on the frame via the film-pushing bracket. The sliding gear seat is slidably connected to the longitudinal film-pushing slide rail, the sliding gear seat is connected to the telescopic rod of the film-pushing cylinder, the two ends of the film-pushing roller are rotatably connected to the sliding gear seat, the two ends of the film-pushing roller are respectively engaged with the fixed rack via a transmission gear, the film-pushing roller matches the film-cutting structure, and the film-pushing cylinder is connected to the controller. This film-pushing structure can eliminate film skew caused by uneven unilateral thrust.

[0011] A more preferred option is that the film unwinding mechanism includes a film unwinding support, a film roller transverse slide, a film roller support, a film roll, a first screw, a first transmission box, and a film transfer motor. The film roller support is slidably connected to the film unwinding support via the film roller transverse slide. The film unwinding support is mounted on the top of the frame. The film transfer motor is connected to one end of the first screw via the first transmission box. The other end of the first screw is threadedly connected to the film roller support. Both ends of the film roll are rotatably connected to the film roller support. The film transfer motor is connected to the controller. This film unwinding mechanism can dynamically follow the width of the sheet material, reducing film waste.

[0012] A more preferred option is a vacuum roller mechanism that includes a film suction bracket, a telescopic rack, a shaft-end fixed bracket, a transmission rod, a film suction motor, and a film suction roller. The telescopic rack is slidably connected to the film suction bracket, and both ends of the transmission rod are rotationally connected to the film suction bracket via the shaft-end fixed bracket. Both ends of the transmission rod engage with the telescopic rack, the film suction motor is connected to the transmission rod, and both ends of the film suction roller are rotationally connected to the telescopic rack. The film suction motor is connected to the controller. This vacuum roller mechanism can adapt to changes in film width and maintain uniform suction force.

[0013] A more preferred option is that the film laminating mechanism includes a pressure cylinder, a rotating push rod, an upper roller hinged support, an upper roller, a lower roller, a roller bearing seat, and a roller guide plate. The two ends of the upper roller are respectively rotatably connected to the roller bearing seat, and the two ends of the lower roller are respectively rotatably connected to the roller bearing seat. Both sides of the roller bearing seat are slidably connected to the frame via the roller guide plate. The upper roller is located above the lower roller, and the top of the upper roller is connected to the upper roller hinged support. The upper roller hinged support is hinged to the rotating push rod, and the rotating push rod is connected to the pressure cylinder. The pressure cylinder is mounted on the frame and connected to the controller. The film is located between the upper roller and the lower roller. This film laminating mechanism can achieve strong bonding between the sheet material and the film.

[0014] A more preferred option is to have a frame that includes side frames, a first connecting rod, a second connecting rod, and an anti-collision guide roller frame. The upper ends of the side frames are connected via the second connecting rod, and the lower ends of the side frames are connected via the first connecting rod. The anti-collision guide roller frame is connected to the first connecting rod and is located at the discharge end of the film laminating mechanism. The vacuum roller mechanism is connected to the second connecting rod. The film unwinding mechanism, the film stripping mechanism, the film spreading mechanism, and the film laminating mechanism are all mounted on the side frames. This frame provides the rigid foundation required for high-precision film laminating.

[0015] The present invention has the following advantages and beneficial effects compared to the prior art:

[0016] The automatic edge-aligning thermal film laminating equipment of the present invention can achieve high-precision positioning of the plate edge and the film edge of the film through a detection mechanism, a film placing mechanism and a film spreading mechanism, and can achieve high-precision thermal film laminating of the plate without lag and zero deviation, thereby avoiding waste of film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a thermal laminating device for automatically aligning edges of plates according to the present invention;

[0018] Figure 2 This is a schematic diagram of a film-laying mechanism of a thermal film laminating device for automatic edge alignment of a plate according to the present invention;

[0019] Figure 3 This is a schematic diagram of a film stripping mechanism of a thermal film laminating device for automatic edge alignment of a plate according to the present invention;

[0020] Figure 4 yes Figure 3 A local enlarged view at point A;

[0021] Figure 5 Schematic diagram of a vacuum roller mechanism of a thermal laminating device for automatic edge alignment of plates according to the present invention;

[0022] Figure 6 This is a schematic diagram of a film spreading mechanism of a thermal film laminating device for automatic edge alignment of a plate according to the present invention;

[0023] Figure 7 It is a schematic diagram of a detection mechanism of a thermal laminating device for automatic edge alignment of plates according to the present invention;

[0024] Figure 8 It is a schematic diagram of a detection mechanism of a thermal laminating device for automatic edge alignment of plates according to the present invention;

[0025] Figure 9 This is a schematic diagram of a film laminating mechanism of a thermal film laminating device for automatic edge alignment of a plate according to the present invention;

[0026] Figure 10This is a schematic diagram of a frame of a thermal laminating device for automatic edge alignment of plates according to the present invention;

[0027] Figure 11 This is a schematic diagram of a thermal laminating device for automatically aligning edges of panels (in working state) according to the present invention;

[0028] Components in the accompanying drawings are marked as follows: 1-film placing mechanism; 101-film placing support; 102-film roller transverse sliding rail; 103-film roller support; 104-film winding roller; 105-first screw; 106-first transmission box; 107-film transfer motor; 2-film stripping mechanism; 21-film cutting structure; 211-film cutting support; 212-film stripping linear module; 213-film cutting cylinder; 214-transverse film cutting knife; 22-film pushing structure; 221-film pushing Cylinder; 222-film pushing bracket; 223-film pushing longitudinal slide rail; 224-sliding gear seat; 225-fixed rack; 226-film pushing roller; 3-vacuum roller mechanism; 301-film suction bracket; 302-telescopic rack; 303-shaft end fixed bracket; 304-transmission rod; 305-film suction motor; 306-film suction roller; 4-film spreading mechanism; 401-film spreading bracket; 402-film spreading transverse slide rail; 403-film spreading sliding bracket ; 404-second screw; 405-second transmission box; 406-film-unfolding motor; 407-guide roller; 408-knife holder rod; 409-longitudinal film-cutting knife; 410-flattening roller; 5-detection mechanism; 501-detection bracket; 502-detection linear module; 503-measuring sliding base; 504-pull encoder; 505-detection horizontal slide rail; 506-detection horizontal slider; 507-pull steering roller; 508-sliding Base; 509-measuring roller; 6-film-laminating mechanism; 601-pressing cylinder; 602-rotating push rod; 603-upper roller hinged support; 604-upper roller; 605-lower roller; 606-roller bearing seat; 607-roller guide plate; 7-frame; 701-side frame; 702-first connecting rod; 703-second connecting rod; 704-anti-collision guide roller frame; 8-film; 9-plate; a-first direction; b-second direction; c-third direction. DETAILED DESCRIPTION

[0029] The purpose of the present invention will be described in further detail below with reference to the accompanying drawings and specific examples. The examples cannot be described one by one here, but the implementation methods of the present invention are not limited to the following examples.

[0030] In this embodiment, in the first direction a, the direction of the arrow is right, and the opposite direction of the arrow is left; in the second direction b, the direction of the arrow is backward, and the opposite direction of the arrow is forward; in the third direction c, the direction of the arrow is upward, and the opposite direction of the arrow is downward.

[0031] like Figure 1As shown, a thermal film laminating device for automatic edge alignment of sheet materials includes a film unwinding mechanism 1, a film scribing mechanism 2, a vacuum roller mechanism 3, a film spreading mechanism 4, a detection mechanism 5, a film laminating mechanism 6, a frame 7, and a controller. The film unwinding mechanism 1, the film scribing mechanism 2, the vacuum roller mechanism 3, and the film laminating mechanism 6 are sequentially installed on the frame 7 from top to bottom, with the film unwinding mechanism 1 located at the top of the frame 7. The film laminating mechanism 6 is located below the film scribing mechanism 2. A film roll is installed on the film unwinding mechanism 1, and the film 8 of the film roll passes downward through the film scribing mechanism 2 and then through the film spreading mechanism 4 to connect to the film laminating mechanism 6. The vacuum roller mechanism 3 is located on the rear side of the film 8. The detection mechanism 5 is installed on the front side of the frame 7 and is located at the discharge end of the film laminating mechanism 6. The film unwinding mechanism 1, the film scribing mechanism 2, the vacuum roller mechanism 3, the film spreading mechanism 4, the detection mechanism 5, and the film laminating mechanism 6 are all connected to the controller.

[0032] The film unwinding mechanism 1 is used to store and release the film roll, and dynamically adjusts the position of the film roll in the second direction b according to the width of the sheet 9 to ensure that the film 8 is aligned with the sheet 9. The film cutting mechanism 2 is used to cut the film 8 to the required length and push the film 8 to assist in cutting. The vacuum roller mechanism 3 is used to absorb and transport the film 8 to eliminate wrinkles. The film unfolding mechanism 4 is used to flatten the film 8, cut off excess edge material, and accurately locate the film application position. The detection mechanism 5 is used to detect the edge position of the sheet 9 in real time and provide feedback to dynamically adjust the position of the film 8. The film application mechanism 6 applies pressure to the sheet 9 to complete the film 8 application. The frame 7 is used to support all mechanisms and ensure the stability of the equipment. The controller (not shown in the figure) is a PLC controller, which is used to control the coordinated operation of various mechanisms.

[0033] like Figure 2 As shown, the film unwinding mechanism 1 includes two film unwinding supports 101, four film roller transverse slides 102, two film roller supports 103, two film rolls 104, a first screw 105, a first transmission box 106, and a film transfer motor 107. The two film unwinding supports 101 are respectively mounted on the top of the two side frames 701 of the frame 7. Two parallel film roller transverse slides 102 are mounted on the top of each film unwinding support 101. The two film roller transverse slides 102 are perpendicular to the axis of the film unwinding support 101. The top of each film roller support 103 is slidably connected to the two film roller transverse slides 102. The left film roller support 103 is threadedly connected to the right end of the first screw 105, and the left end of the first screw 105 is connected to the output end of the first transmission box 106. The first transmission box 106 is mounted on the top of the left film unwinding support 101. The input end of the first transmission box 106 is connected to the rotating shaft of the film transfer motor 107. The left ends of the two film rolls 104 are rotatably connected to the left film roll support 103, and the right ends of the two film rolls 104 are rotatably connected to the right film roll support 103. The two film rolls 104 are parallel to each other. The film transfer motor 107 is connected to the controller via electrical wires.

[0034] The film placing bracket 101 is used as the basic framework of the mechanism, fixed on both sides of the top of the frame 7, and supports all moving parts. The film roller transverse slide 102 is used to guide the track of the film roller bracket 103 to move laterally in the first direction a, ensuring translation stability. The film roller bracket 103 is used to carry the film roll roller 104 and drive the film roll roller 104 to move laterally in the first direction a. The film roll roller 104 is used to directly carry the film roll and release the film 8. The first screw 105 is used to convert the rotational motion of the film transfer motor 107 into linear motion, pushing the film roller bracket 103 to move in the first direction a. The first transmission box 106 is used to transmit power and distribute the direction of movement. The film transfer motor 107 provides power for the film roll roller 104 to move left and right in the first direction a.

[0035] like Figure 3 As shown, the film cutting mechanism 2 includes a film cutting structure 21 and a film pushing structure 22. The ends of the film cutting structure 21 are mounted on the two side frames 701 of the frame 7 and are located behind the film 8. The film pushing structure 22 is mounted on the two side frames 701 of the frame 7 and is located in front of the film 8. Both the film cutting structure 21 and the film pushing structure 22 are controlled by a controller. The film cutting structure 21 is used to cut the film 8 in a first direction a. The film pushing structure 22 is used to push the film 8 to assist in cutting and maintain tension.

[0036] like Figure 3 As shown, the film cutting structure 21 includes a film cutting support 211, a film cutting linear module 212, a film cutting cylinder 213, and a transverse film cutting knife 214. The ends of the film cutting support 211 are mounted on the two side frames 701 of the frame 7. The film cutting linear module 212 is fixedly mounted on the top of the film cutting support 211, and the film cutting cylinder 213 is mounted on the transverse movable end of the film cutting linear module 212. The axial direction of the film cutting linear module 212 is perpendicular to the axial direction of the film cutting cylinder 213. The transverse film cutting knife 214 is connected to the telescopic rod of the film cutting cylinder 213 and is located behind the film 8. The film cutting linear module 212 and the film cutting cylinder 213 are both controlled by a controller.

[0037] The film cutting bracket 211 serves as the structural base, with both ends fixed to the side frame 701 of the frame 7, providing rigid support for other components. The film cutting linear module 212 is used to drive the transverse film cutting knife 214 in a first direction a, controlling the cutting path. The film cutting cylinder 213 is used to drive the transverse film cutting knife 214 in a second direction b, thereby moving the transverse film cutting knife 214 to the left of the film 8. The transverse film cutting knife 214 is used to cut the film 8.

[0038] like Figure 3 and 4As shown, the film pushing structure 22 includes two film pushing cylinders 221, two film pushing brackets 222, two longitudinal film pushing rails 223, two sliding gear blocks 224, two fixed racks 225, and a film pushing roller 226. The two film pushing brackets 222 are mounted on the upper portions of the two side frames 701 of the frame 7. The two longitudinal film pushing rails 223 are mounted on the inner sides of the two film pushing brackets 222. The two fixed racks 225 are mounted on the tops of the two film pushing brackets 222. The two sliding gear blocks 224 are slidably connected to the two longitudinal film pushing rails 223. The two film pushing cylinders 221 are mounted on the front ends of the film pushing brackets 222, and the telescopic rods of the two film pushing cylinders 221 are fixedly connected to the two sliding gear blocks 224. The film pushing roller 226 is rotatably connected to the two sliding gear blocks 224 at both ends. Transmission gears are provided at both ends of the film pushing roller 226, and the two transmission gears mesh with the two fixed racks 225. The film pushing roller 226 is in front of the film 8. The two film pushing cylinders 221 are all controlled by the controller.

[0039] The film pushing cylinder 221 is used to provide the film pushing roller 226 with moving power in the second direction b, driving the film pushing roller 226 to press against the film 8. The film pushing bracket 222 is used to carry various components. The film pushing longitudinal slide rail 223 provides guidance in the second direction b for the sliding gear seat 224 to limit the direction of movement. The sliding gear seat 224 is used to install the two ends of the film pushing roller 226. The fixed rack 225 is used as a reference track for the movement of the transmission gear to ensure the synchronization of the film pushing roller 226. The film pushing roller 226 is used to directly contact the surface of the film 8 and can be driven to rotate by the film 8. The backward parallel thrust applied in the second direction b makes it close to the horizontal film cutting knife 214.

[0040] The film-cutting mechanism 2 operates as follows: When film 8 needs to be cut, the film-pushing cylinder 221 receives a command from the controller and extends its telescopic rod, pushing the sliding gear holder 224 along the longitudinal film-pushing rail 223 toward film 8 (i.e., backward in the second direction b). The transmission gears at each end of the film-pushing roller 226 engage with the fixed rack 225, forcing synchronous movement on both sides. This ensures that the film-pushing roller 226 presses parallel to the surface of film 8, eliminating skew caused by unilateral thrust. After contacting the film 8, the film-pushing roller 226 applies continuous backward pressure in the second direction b, tightening the film 8 and bringing it into contact with the transverse film-cutting knife 214, establishing the required tension for cutting. The film-cutting cylinder 213 drives the transverse film-cutting knife 214 forward in the second direction b, adjusting it to the left of the side edge of the film 8 to ensure alignment of the cutting starting point. The film-cutting linear module 212 is activated, driving the transverse film-cutting knife 214 to move at a constant speed in the first direction a (i.e., parallel to the width of the film 8). The stretched film 8 is cut across its entire width by the sharp edge of the transverse film-cutting knife 214. The film-pushing cylinder 221 retracts its telescopic rod, pulling the film-pushing roller 226 away from the surface of the film 8 and releasing the tension. The film-slicing linear module 212 moves in the opposite direction, returning the transverse film-cutting knife 214 to its initial position. Simultaneously, the film-cutting cylinder 213 retracts the transverse film-cutting knife 214 to prevent interference with the transport of the film 8.

[0041] like Figure 5 As shown, the vacuum roller mechanism 3 comprises two film suction supports 301, two telescopic racks 302, two fixed shaft supports 303, a transmission rod 304, a film suction motor 305, and a film suction roller 306. The two film suction supports 301 are mounted on the two second connecting rods 703 of the frame 7. The bottoms of the two telescopic racks 302 are slidably connected to the two film suction supports 301 via four linear guides. The ends of the transmission rod 304 are rotatably connected to the two fixed shaft supports 303. A transmission gear is provided at each end of the transmission rod 304, and the two transmission gears mesh with the two telescopic racks 302. The film suction motor 305 is mounted on the right film suction support 301 and connected to the transmission rod 304. The rear ends of the two telescopic racks 302 are rotatably connected to the ends of the film suction roller 306 via bearings. The film suction motor 305 is controlled by a controller.

[0042] The film suction bracket 301 provides structural stability. The telescopic rack 302 adjusts the distance between the film suction roller 306 and the film 8 by telescoping, adapting to different film 8 sizes. The shaft-end fixing bracket 303 is used to mount the two ends of the transmission rod 304. The transmission rod 304 serves as the power distribution core, synchronously transmitting the torque of the film suction motor 305 to the telescopic racks 302 on both sides. The film suction motor 305 provides a precisely controllable power source, driving the transmission rod 304 to rotate. The surface of the film suction roller 306 is distributed with vacuum holes to absorb the film 8 and eliminate wrinkles.

[0043] The vacuum roller mechanism 3 operates as follows: After the film 8 is cut by the film-cutting mechanism 2, the film-absorbing motor 305 receives a command from the controller and activates, driving the transmission rod 304 to rotate. The transmission gears at both ends of the transmission rod 304 drive the telescopic racks 302 on both sides to extend forward synchronously along the linear guide rails. The telescopic racks 302 push the film-absorbing roller 306 toward the film 8 in the second direction b. Once the film-absorbing roller 306 is in position, the controller triggers the vacuum pump to operate, sucking air from the film-absorbing roller 306. The suction holes on the roller surface of the film-absorbing roller 306 generate a negative pressure, establishing a ready-to-attach state. The film-absorbing roller 306 maintains this negative pressure, and the suction generated by the suction holes presses a localized area of ​​the film 8 against the roller surface. Under slight tension, the film 8 is gradually flattened, eliminating initial wrinkles. The film-applying mechanism 6 activates, pulling the film 8 downward in the third direction a. The film-absorbing roller 306 rotates passively, supported by bearings. The suction holes on the roller surface continuously hold the film 8, ensuring slippage-free and secondary wrinkling-free conveyance. After the film 8 has completely passed, the controller executes a reset command.

[0044] like Figure 6 As shown, the film unfolding mechanism 4 includes two film unfolding supports 401, four transverse film unfolding rails 402, two film unfolding sliding supports 403, a second screw 404, a second transmission box 405, a film unfolding motor 406, a guide roller 407, a knife holder rod 408, four longitudinal film cutting knives 409, and a flattening roller 410. The two film unfolding supports 401 are respectively mounted on the front sides of the two side frames 701 of the frame 7. The four transverse film unfolding rails 402 are respectively aligned with the outer side surfaces of the two film unfolding supports 401, with the axial directions of the four transverse film unfolding rails 402 being perpendicular to the axial directions of the film unfolding supports 401. The bottom ends of the two film unfolding sliding supports 403 are respectively slidably connected to the four transverse film unfolding rails 402. The guide roller 407, the knife holder rod 408, and the flattening roller 410 are sequentially mounted on the film-unfolding slide bracket 403 from top to bottom. The guide roller 407 is rotatably connected to the film-unfolding slide bracket 403 at both ends via bearings. The knife holder rod 408 is fixedly connected to the film-unfolding slide bracket 403 at both ends. The flattening roller 410 is rotatably connected to the film-unfolding slide bracket 403 at both ends via bearings. Four longitudinal film-cutting knives 409 are detachably connected to the knife holder rod 408. The four longitudinal film-cutting knives 409 can be adjusted on the knife holder rod 408, dividing the four longitudinal film-cutting knives 409 into two groups, each containing two longitudinal film-cutting knives 409. The film-unfolding motor 406 is mounted on the left film-unfolding slide bracket 401 via a second transmission box 405. The second transmission box 405 is threadedly connected to the film-unfolding slide bracket 403 via a second screw 404. The film-unfolding motor 406 is connected to a controller.

[0045] The film-unfolding support 401 serves as the basic support for the mechanism. It is fixed to the front side of the side frame 701 of the frame 7 and carries the film-unfolding transverse slide rail 402 and the second transmission box 405. The film-unfolding transverse slide rail 402 provides high-precision lateral guidance for the slide rail in the first direction a, ensuring smooth movement of the film-unfolding slide rail 403. The film-unfolding slide rail 403 integrates the core components for film 8 processing (including the guide roller 407, the longitudinal film-cutting knife 409, and the flattening roller 410), allowing the entire structure to move laterally to accommodate the width of the sheet material. The second screw 404 converts the rotation of the film-unfolding motor 406 into linear motion, driving the slide rail to move laterally in the first direction a. The second transmission box 405 transmits power and converts the direction of motion, supporting the rotation of the second screw 404. The film-unfolding motor 406 provides a power source and precisely controls the position of the slide rail. The guide roller 407 serves as the final guide roller for conveying the film 8, precisely guiding the film 8 toward the film-applying mechanism 6. The knife holder rod 408 secures the rigid crossbeam of the longitudinal film-cutting knife 409. The longitudinal film cutting knife 409 is used to cut off the redundant waste edges on both sides of the film 8, that is, to fine-tune the film 8. The flattening roller 410 is used to eliminate the wrinkles of the film 8.

[0046] like Figure 7 and 8 As shown, the detection mechanism 5 includes a detection bracket 501, a detection linear module 502, a measuring sliding base 503, a wire encoder 504, a detection transverse slide rail 505, a detection transverse slider 506, a wire steering roller 507, a sliding base 508, and a measuring roller 509. The two ends of the detection bracket 501 are respectively mounted on the front sides of the two side frames 701 of the frame 7. The detection linear module 502 is fixedly mounted on the outside of the detection bracket 501. The measuring sliding base 503 is connected to the movable end of the detection linear module 502. The detection transverse slide rail 505 is connected to the outer side surface of the measurement sliding base 503, and the axial direction of the detection transverse slide rail 505 is aligned with the axial direction of the measurement sliding base 503. The bottom of the sliding base 508 is slidably connected to the detection transverse slide rail 505 via the detection transverse slider 506. The wire encoder 504 is mounted on the detection bracket 501 and is located above the left end of the detection linear module 502. The wire drawing deflection roller 507 is rotatably mounted on the right end of the measuring sliding base 503. The wire drawing of the wire drawing encoder 504 passes through the wire drawing deflection roller 507 and is then connected to the sliding base 508. The measuring roller 509 is rotatably connected to the sliding base 508 via a main shaft. The measuring roller 509 is located at the discharge end of the film laminating mechanism 6 (i.e., to the left of the sheet 9). Both the detection linear module 502 and the wire drawing encoder 504 are controlled by a controller.

[0047] The inspection bracket 501 serves as a base platform for installation across the frame 7. Its ends are fixed to the front of the side frame 701 of the frame 7 and support all inspection components. The inspection linear module 502 drives the measurement components for coarse lateral positioning. The measurement sliding base plate 503 connects the inspection linear module 502 to the transition base of the inspection transverse slide 505, transmitting motion. The wire encoder 504 measures micro-displacements of the sliding base 508. The inspection transverse slide 505 provides high-precision guidance for the sliding base 508, oriented perpendicular to the direction of movement of the plate 9. The inspection transverse slider 506 connects the sliding base 508 to the inspection transverse slide 505, enabling micro-sliding. The wire steering roller 507 changes the wire pulling direction to reduce frictional losses. The sliding base 508 integrates the final measurement unit (i.e., the measurement roller 509), which fine-tunes the position along the slide rail. The measurement roller 509 directly contacts the edge of the plate 9 to detect the actual position.

[0048] like Figure 9 As shown, the film-laminating mechanism 6 includes two pressing cylinders 601, two rotating push rods 602, two upper roller hinged supports 603, an upper roller 604, a lower roller 605, four roller bearing blocks 606, and eight roller guide plates 607. The lower roller 605 is rotatably connected to the two roller bearing blocks 606 at both ends, while the upper roller 604 is rotatably connected to the two roller bearing blocks 606 at both ends. The four roller bearing blocks 606 are mounted on either side of the frame 7 via eight roller guide plates 607. Each roller bearing block 606 can slide up and down in the third direction c relative to the corresponding two roller guide plates 607. The upper roller 604 is located above the lower roller 605. The top ends of the two upper rollers 604 are connected to the lower ends of the two upper roller hinged supports 603, and the upper ends of the two upper roller hinged supports 603 are rotatably connected to the lower ends of the two rotating push rods 602. The upper ends of the two rotating push rods 602 are respectively connected to the two top-pressing cylinders 601, and the two top-pressing cylinders 601 are respectively installed on the upper parts of the two side frames 701 of the frame 7. The two top-pressing cylinders 601 are all controlled by the controller.

[0049] The push cylinder 601 provides a controllable downward pressure source, driving the upper roller 604 to press down on the film 8 and sheet 9. The rotating push rod 602 converts the vertical thrust of the push cylinder 601 into a lever-amplified force, amplifying the downward force. The upper roller articulated support 603 connects the rotating push rod 602 to the upper roller 604, transmitting the downward pressure and allowing fine adjustment of the roller angle. The upper roller 604 and lower roller 605 are used to apply the film 8 to the sheet 9. The roller guide plate 607 is a high-precision guide component that restricts the roller movement to the vertical direction, eliminating lateral deviation.

[0050] like Figure 10As shown, the frame 7 includes two side frames 701, two first connecting rods 702, two second connecting rods 703, and an anti-collision guide roller frame 704. The two side frames 701 are arranged in parallel. The upper ends of the two side frames 701 are fixedly connected by two second connecting rods 703, and the two second connecting rods 703 are parallel to each other. The lower ends of the two side frames 701 are fixedly connected by two first connecting rods 702, and the two first connecting rods 702 are parallel to each other. The anti-collision guide roller frame 704 is mounted on the two first connecting rods 702.

[0051] The side frame 701 is the main load-bearing framework of the equipment, supporting all functional mechanisms. The first connecting rod 702 serves as a bottom torsion beam, connecting the lower ends of the two side frames 701 and resisting twisting moments in the horizontal plane. The second connecting rod 703 serves as a top compression beam, connecting the upper ends of the two side frames 701 and bearing vertical loads. The anti-collision guide roller frame 704 serves as a core component for safety protection at the discharge end and guiding the plate 9.

[0052] like Figure 11 As shown, a method for using a thermal laminating device for automatically aligning edges of plates includes the following steps:

[0053] Step 1. Equipment initialization and temperature control: Install the hot laminating equipment behind the curing furnace (which belongs to the existing technology). By controlling the temperature of the front cooling water, the temperature of the plate 9 during laminating can be controlled (the temperature range of the plate 9 during laminating is 45~55 degrees Celsius), achieving a hot laminating effect and ensuring stable laminating viscosity.

[0054] Step 2: The plate 9 enters the equipment and is initially positioned: When the thermal laminating equipment starts working, in the second direction b, the plate 9 is ready to enter the thermal laminating equipment from the front, and the plate 9 passes through the detection mechanism 5.

[0055] Step 3: Coarse positioning of the detection mechanism 5 : The detection linear module 502 moves rightward in the first direction a, and the measuring roller 509 moves rightward along with the detection linear module 502 .

[0056] Step 4: Edge contact detection of plate 9: When the measuring roller 509 contacts the edge of the plate 9, the measuring roller 509 no longer moves to the right due to the obstruction of the plate 9, but the detection linear module 502 still drives the measurement sliding base 503 to continue moving to the right.

[0057] Step 5: Precise Positioning and Signal Feedback: At this point, the sliding base 508, under the force of the measuring roller 509 and the plate edge, moves leftward relative to the measuring sliding base 503 until the wire encoder 504 detects the displacement change of the measuring roller 509. At this point, the detection linear module 502 stops moving. In other words, the left and right movement of the plate edge 9 in the first direction a drives the measuring roller 509 to move accordingly, and the movement of the measuring roller 509 activates the wire encoder 504. The wire encoder 504 generates a pulse signal that is fed back to the controller.

[0058] Step 6: The controller processes the pulse signal in real time, then amplifies the signal through a frequency multiplier and calculates the displacement. This synchronously controls the film transfer motor 107 of the film unwinding mechanism 1 to drive the film roll 104 to move laterally in the first direction a, and the film unwinding motor 406 of the film unwinding mechanism 4 to drive the film unwinding sliding bracket 403 to move laterally in the first direction a. This ensures that the distance the measuring roller 509 moves in the first direction a is reached. The film roll 104 and the film unwinding sliding bracket 403 both move synchronously and in the same direction by the same distance, thereby achieving precise positioning so that the edge of the film 8 automatically follows the edge of the sheet 9. After the upper roller 604 presses downward in the third direction c, the film 8 and sheet 9 pass between the upper roller 604 and lower roller 605 of the thermal laminating equipment. The upper roller 604, under the action of the pressing cylinder 601, presses the film 8 and sheet 9 downward, laminating them.

[0059] Technical advantages of a thermal laminating machine for automatic edge alignment of panels:

[0060] 1. Dynamic real-time compensation: millisecond-level response is achieved through closed-loop control system;

[0061] 2. High-precision synchronization: The three mechanisms (detection mechanism 5 / film placement mechanism 1 / film unfolding mechanism 4) have a coordinated displacement accuracy of ±0.1mm;

[0062] 3. Adaptability: Automatically adapt to plates of different widths and deviations 9;

[0063] 4. Reduce waste: The precise alignment of the plate 9 and the film 8 can avoid wasting the film 8.

[0064] The above specific implementation manner is a preferred embodiment of the present invention and does not limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. A thermal laminating device for automatic edge alignment of plates, characterized by: The invention comprises a film-laying mechanism (1), a film-scratching mechanism (2), a vacuum roller mechanism (3), a film-unrolling mechanism (4), a detection mechanism (5), a film-sticking mechanism (6), a frame (7) and a controller. The film-laying mechanism (1), the film-scratching mechanism (2), the vacuum roller mechanism (3), the film-unrolling mechanism (4), the detection mechanism (5) and the film-sticking mechanism (6) are all installed on the frame (7). The film-laying mechanism (1) is provided with a film (8). The film (8) passes through the film-scratching mechanism (2), the vacuum roller mechanism (3) and the film-unrolling mechanism (4) in sequence and is connected to the film-sticking mechanism (6). The detection mechanism (5) is located at the discharge end of the film-sticking mechanism (6). The film-laying mechanism (1), the film-scratching mechanism (2), the vacuum roller mechanism (3), the film-unrolling mechanism (4), the detection mechanism (5) and the film-sticking mechanism (6) are all connected to the controller. The detection mechanism (5) includes a detection bracket (501), a detection linear module (502), a measuring sliding base (503), a wire encoder (504), a detection transverse slide rail (505), a detection transverse slider (506), a wire steering roller (507), a sliding base (508) and a measuring roller (509), wherein the detection linear module (502) and the wire encoder (504) are both mounted on the frame (7) via the detection bracket (501), the detection transverse slide rail (505) is connected to the movable end of the detection linear module (502) via the measuring sliding base (503), and the wire steering roller (509) is connected to the movable end of the detection linear module (502). The wheel (507) is located on the side of the detection transverse slide rail (505) away from the wire encoder (504), the sliding base (508) is slidably connected to the detection transverse slide rail (505) through the detection transverse slider (506), the wire of the wire encoder (504) is connected to the sliding base (508) through the wire steering roller (507), the measuring roller (509) is rotatably connected to the sliding base (508), the measuring roller (509) is located at the discharge end of the film-sticking mechanism (6), and the detection linear module (502) and the wire encoder (504) are both connected to the controller.

2. The automatic edge alignment thermal laminating device for plates according to claim 1, characterized in that: The film spreading mechanism (4) comprises a film spreading support (401), a film spreading transverse slide rail (402), a film spreading sliding support (403), a second screw (404), a second transmission box (405), a film spreading motor (406), a guide roller (407), a knife holder rod (408), a longitudinal film cutting knife (409) and a flattening roller (410), wherein the film spreading support (401) is mounted on the machine frame (7), the film spreading sliding support (403) is slidably connected to the film spreading support (401) via the film spreading transverse slide rail (402), the guide roller (407) and the flattening roller (410) are connected to each other. 10) are both rotatably connected to the film-expanding sliding bracket (403), the longitudinal film-cutting knife (409) is fixedly connected to the film-expanding sliding bracket (403) through the knife holder rod (408), the knife holder rod (408) is located between the guide roller (407) and the flattening roller (410), the film-expanding motor (406) is connected to one end of the second screw rod (404) through the second transmission box (405), the other end of the second screw rod (404) is threadedly connected to the film-expanding sliding bracket (403), and the film-expanding motor (406) is connected to the controller.

3. The automatic edge alignment thermal laminating device for plates according to claim 1, characterized in that: The film cutting mechanism (2) includes a film cutting structure (21) and a film pushing structure (22), both of which are installed on the frame (7), and are respectively located on both sides of the film (8). The film cutting structure (21) and the film pushing structure (22) match each other, and both of which are connected to the controller.

4. The automatic edge alignment thermal laminating device for plates according to claim 3, characterized in that: The film cutting structure (21) includes a film cutting bracket (211), a film cutting linear module (212), a film cutting cylinder (213) and a transverse film cutting knife (214); the film cutting linear module (212) is installed on the frame (7) through the film cutting bracket (211); the transverse film cutting knife (214) is installed on the movable end of the film cutting linear module (212) through the film cutting cylinder (213); the transverse film cutting knife (214) matches the film pushing structure (22); the film cutting cylinder (213) and the film cutting linear module (212) are both connected to the controller.

5. The automatic edge alignment thermal laminating device for plates according to claim 3, characterized in that: The film pushing structure (22) includes a film pushing cylinder (221), a film pushing bracket (222), a film pushing longitudinal slide rail (223), a sliding gear seat (224), a fixed rack (225) and a film pushing roller (226), wherein the film pushing cylinder (221), the film pushing longitudinal slide rail (223) and the fixed rack (225) are all mounted on the frame (7) through the film pushing bracket (222), and the sliding gear seat (224) and the film pushing longitudinal slide rail are connected to each other. (223) is slidingly connected, the sliding gear seat (224) is connected to the telescopic rod of the film pushing cylinder (221), the two ends of the film pushing roller (226) are respectively rotatably connected to the sliding gear seat (224), the two ends of the film pushing roller (226) are respectively engaged with the fixed rack (225) through the transmission gear, the film pushing roller (226) is matched with the film cutting structure (21), and the film pushing cylinder (221) is connected to the controller.

6. The automatic edge alignment thermal laminating device for plates according to claim 1, characterized in that: The film laying mechanism (1) comprises a film laying support (101), a film roller transverse sliding rail (102), a film roller support (103), a film rolling roller (104), a first screw (105), a first transmission box (106) and a film shifting motor (107); the film roller support (103) is slidably connected to the film laying support (101) through the film roller transverse sliding rail (102); the film laying support (101) is installed on the top of the frame (7); the film shifting motor (107) is connected to one end of the first screw (105) through the first transmission box (106); the other end of the first screw (105) is threadedly connected to the film roller support (103); the two ends of the film rolling roller (104) are respectively rotatably connected to the film roller support (103); and the film shifting motor (107) is connected to the controller.

7. The automatic edge alignment thermal laminating device for plates according to claim 1, characterized in that: The vacuum roller mechanism (3) comprises a film suction support (301), a telescopic rack (302), an axial end fixed support (303), a transmission rod (304), a film suction motor (305) and a film suction roller (306); the telescopic rack (302) is slidably connected to the film suction support (301); the two ends of the transmission rod (304) are respectively rotatably connected to the film suction support (301) via the axial end fixed support (303); the two ends of the transmission rod (304) are respectively engaged with the telescopic rack (302); the film suction motor (305) is connected to the transmission rod (304); the two ends of the film suction roller (306) are respectively rotatably connected to the telescopic rack (302); and the film suction motor (305) is connected to the controller.

8. The automatic edge alignment thermal laminating device for plates according to claim 1, characterized in that: The film laminating mechanism (6) includes a top pressure cylinder (601), a rotating push rod (602), an upper roller hinged support (603), an upper roller (604), a lower roller (605), a roller bearing seat (606) and a roller guide plate (607). The two ends of the upper roller (604) are respectively connected to the roller bearing seat (606) for rotation. The two ends of the lower roller (605) are respectively connected to the roller bearing seat (606) for rotation. The two sides of the roller bearing seat (606) are respectively connected to the frame (7) for sliding through the roller guide plate (607). The upper roller (604) is located above the lower roller (605), the top of the upper roller (604) is connected to the upper roller hinge support (603), the upper roller hinge support (603) is hinged to the rotating push rod (602), the rotating push rod (602) is connected to the top pressure cylinder (601), the top pressure cylinder (601) is installed on the frame (7), the top pressure cylinder (601) is connected to the controller, and the film (8) is located between the upper roller (604) and the lower roller (605).

9. The automatic edge alignment thermal laminating device for plates according to claim 1, characterized in that: The frame (7) includes a side frame (701), a first connecting rod (702), a second connecting rod (703) and an anti-collision guide roller frame (704), the upper end of the side frame (701) is connected through the second connecting rod (703), the lower end of the side frame (701) is connected through the first connecting rod (702), the anti-collision guide roller frame (704) is connected to the first connecting rod (702) and is located at the discharge end of the film laminating mechanism (6), the vacuum roller mechanism (3) is connected to the second connecting rod (703), and the film placing mechanism (1), the film drawing mechanism (2), the film unfolding mechanism (4) and the film laminating mechanism (6) are all installed on the side frame (701).

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