Double-sided continuous film coating device for plywood and film coating production line

Abstract

This application provides a plywood double-sided continuous laminating device and laminating production line, belonging to the technical field of plywood laminating devices. The plywood double-sided continuous laminating device includes a laminating belt conveyor, a laminating machine, and a hot-press cutting device. The laminating belt conveyor includes a support frame, a drive roller, a driven roller, and a conveyor belt; the laminating machine includes a support frame, on which an upper film roll and a lower film roll are mounted on a rolling frame; a tension roller is mounted on the upper rolling frame of the support frame, and the tension rollers are arranged side-by-side on top of the drive roller. The laminating film of the upper film roll is wound around the tension roller and attached to the upper surface of the plywood, extending to the hot-press cutting device and hot-pressed onto the upper surface of the plywood; the laminating film of the lower film roll is wound around the drive roller and held between the upper surface of the conveyor belt and the lower surface of the plywood, extending to the hot-press cutting device and hot-pressed onto the lower surface of the plywood. The laminating production line, equipped with the plywood double-sided continuous laminating device, achieves continuous, automatic, and batch double-sided laminating of plywood with high laminating efficiency.

Description

Technical Field

[0001] This application belongs to the technical field of plywood double-sided continuous lamination equipment, and more specifically, relates to plywood double-sided continuous lamination equipment and lamination production line. Background Technology

[0002] During plywood processing, a film needs to be applied to both sides of the plywood using a hot-pressing process to enhance its waterproof and moisture-proof properties. Specifically, the film is first applied to both sides of the plywood using a laminating machine, and then the plywood is placed into a hot-pressing device for hot pressing.

[0003] In the prior art, Chinese utility model patent with publication number CN222135953U discloses an automated plywood laminating machine. In this solution, in order to laminate both sides of the plywood, the plywood is first transported to the laminating machine by a conveyor belt to laminate one surface. Then, the conveyor belt reverses and drives the plywood to a flipping frame. The flipping frame reverses the plywood and then transports it back to the laminating machine by a transmission belt to laminate the other surface.

[0004] However, this method is inefficient and not suitable for large-scale lamination of plywood because it requires reversing the plywood and the conveyor belt needs to change direction repeatedly. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this application provides a plywood double-sided continuous lamination device and lamination production line, which can continuously and uninterruptedly laminate both sides of plywood, facilitating large-scale production.

[0006] To achieve the above objectives, the technical solution of this application provides a plywood double-sided continuous laminating device, including a feeding belt conveyor, a laminating belt conveyor, a board discharge belt conveyor, a laminating machine, a hot-press cutting device, and a control device; the discharge end of the feeding belt conveyor is opposite to the feeding end of the laminating belt conveyor, the discharge end of the laminating belt conveyor is opposite to the feeding end of the hot-press cutting device, and the discharge end of the hot-press cutting device is opposite to the feeding end of the board discharge belt conveyor; the feeding belt conveyor, the laminating belt conveyor, the board discharge belt conveyor, and the hot-press cutting device are all controlled by the control device; the laminating belt conveyor includes a support frame, a drive roller, a driven roller, and a conveyor belt, the drive roller and the driven roller are both rotatably mounted on the support frame, and the conveyor belt is wound around the drive roller and the driven roller. The drive roller is located at the feed end of the laminating belt conveyor, and the driven roller is located at the discharge end of the laminating belt conveyor. The conveyor belt is used to continuously transport plywood. The laminating machine is supported by a support frame, on which a rolling frame is provided with an upper film roll and a lower film roll. The upper film roll is located at the top of the laminating belt conveyor, and the lower film roll is located at the bottom of the laminating belt conveyor. A tension roller is provided on the rolling frame of the support frame, and the tension rollers are arranged side by side on top of the drive roller. The film of the upper film roll is wrapped around the tension roller and attached to the upper surface of the plywood. The film of the upper film roll extends to the hot press cutting device and is hot-pressed and adhered to the upper surface of the plywood. The film of the lower film roll is wrapped around the drive roller and held between the upper surface of the conveyor belt and the lower surface of the plywood. The film of the lower film roll extends to the hot press cutting device and is hot-pressed and adhered to the lower surface of the plywood.

[0007] Optionally, the support frame 1 is also equipped with a vertical three-axis cylinder 1, a horizontal three-axis cylinder 1, and a horizontal three-axis cylinder 2; all three are controlled by a control device; the vertical three-axis cylinder 1 is located at the top of the drive roller, and the tensioning roller is installed at the bottom output end of the vertical three-axis cylinder 1; the output end of the vertical three-axis cylinder 1 extends to press the tensioning roller against the surface of the plywood; the horizontal three-axis cylinder 1 is located on the side of the tensioning roller facing the feed end of the laminating belt conveyor, and the output end of the horizontal three-axis cylinder 1 has a rolling frame with a pressure roller 1; the output end of the horizontal three-axis cylinder 1 extends to press the pressure roller 1 against the tensioning roller; the horizontal three-axis cylinder 2 is located on the side of the drive roller facing the feed end of the laminating belt conveyor, and the output end of the horizontal three-axis cylinder 2 has a rolling frame with a pressure roller 2; the output end of the horizontal three-axis cylinder 2 extends to press the pressure roller 2 against the drive roller.

[0008] Optionally, the laminating machine also includes a ground guide rail, an upper mandrel, and a lower mandrel. The ground guide rail is located at the bottom of the laminating belt conveyor and extends along the width direction of the laminating belt conveyor. The support frame includes a base slidably mounted on the ground guide rail. A vertical mounting column is provided on one side of the base, and an upper clamping assembly and a lower clamping assembly are provided along the height direction of the vertical mounting column. The upper clamping assembly includes an upper bottom arc plate and an upper top arc plate bolted to the top of the upper bottom arc plate, and the upper bottom arc plate is fixedly connected to the vertical mounting column. The lower clamping assembly includes a lower bottom arc plate and a lower top arc plate bolted to the top of the lower bottom arc plate, and the lower bottom arc plate... It is fixedly connected to the vertical mounting column; a support column one is provided on the other side of the base, and two lower support bearings opposite to the lower clamping assembly are installed side by side on the top of the support column one; a support column two is provided on the top of the support frame one, and two upper support bearings opposite to the upper clamping assembly are installed side by side on the top of the support column two; one end of the upper mandrel is clamped between the upper top arc plate and the upper bottom arc plate, and the other end of the upper mandrel is rolled and supported by the two upper support bearings; one end of the lower mandrel is clamped between the lower top arc plate and the lower bottom arc plate, and the other end of the lower mandrel is rolled and supported by the two lower support bearings; the upper film roll is sleeved on the outside of the upper mandrel, and the lower film roll is sleeved on the outside of the lower mandrel.

[0009] Optionally, the hot-press cutting device includes a support frame two, on which two sets of upper hot-press mechanisms, two sets of lower hot-press mechanisms, an upper cutting mechanism, and a lower cutting mechanism are mounted; the belt conveyor for laminating has a conveying surface, the two sets of upper hot-press mechanisms and the two sets of lower hot-press mechanisms are symmetrically arranged on the upper and lower sides of the plane on which the conveying surface is located, the upper cutting mechanism and the lower cutting mechanism are symmetrically arranged on the upper and lower sides of the plane on which the conveying surface is located, and the upper cutting mechanism is located between the two sets of upper hot-press mechanisms, and the lower cutting mechanism is located between the two sets of lower hot-press mechanisms.

[0010] Optionally, the upper hot pressing mechanism includes a vertical triaxial cylinder 2, a heat-conducting plate 1, and several soldering irons 1. The vertical triaxial cylinder 2 is fixedly mounted on the support frame 2 with its output end located at the bottom. The heat-conducting plate 1 is fixedly mounted at the bottom of the output end of the vertical triaxial cylinder 2 and extends along the conveying direction perpendicular to the belt conveyor for laminating. The several soldering irons 1 are arranged at intervals along the conveying direction perpendicular to the belt conveyor for laminating. The several soldering irons 1 are fixedly mounted on the top of the heat-conducting plate 1, and their heating ends abut against the top of the heat-conducting plate 1. The next hot pressing mechanism includes a vertical three-axis cylinder three, a heat-conducting plate two, and several soldering irons two. The vertical three-axis cylinder three is fixedly mounted on the support frame two and its output end is located at the top. The heat-conducting plate two is fixedly mounted on the top of the output end of the vertical three-axis cylinder three and extends along the conveying direction perpendicular to the belt conveyor for laminating. Several soldering irons two are arranged at intervals along the conveying direction perpendicular to the belt conveyor for laminating. Several soldering irons two are fixedly mounted on the bottom of the heat-conducting plate two and their heating ends abut against the bottom of the heat-conducting plate two.

[0011] Optionally, the upper cutting mechanism includes a top guide rail, an upper horizontal conveying mechanism, an upper mounting frame, and two upper wallpaper blades. The top guide rail is mounted on the top of the second support frame, the top of the upper mounting frame is slidably mounted on the top guide rail, and the two upper wallpaper blades are fixedly mounted on the bottom of the upper mounting frame and located on the laminating conveying path of the upper film roll. The two upper wallpaper blades are located on the same plane, and their blades are arranged opposite to each other along the width direction of the laminating belt conveyor. The upper horizontal conveying mechanism includes an upper drive shaft, an upper driven shaft, and an upper horizontal moving belt wound around the upper drive shaft and the upper driven shaft on both sides of the width direction of the second support frame. The upper mounting frame is fixedly connected to the upper horizontal moving belt. The lower cutting mechanism includes a bottom guide rail, a lower horizontal conveying mechanism, a lower mounting frame, and two lower wallpaper blades. The bottom guide rail is mounted on the bottom of the second support frame, the bottom of the lower mounting frame is slidably mounted on the bottom guide rail, and the two lower wallpaper blades are fixedly mounted on the top of the lower mounting frame and located on the laminating path of the lower film roll. The conveying path includes two lower wallpaper blades located on the same plane with their blades facing away from each other along the width direction of the film-coating belt conveyor. The lower horizontal conveying mechanism includes a lower drive shaft, a lower driven shaft, and a lower horizontal moving belt wound around the lower drive shaft and the lower driven shaft located on both sides of the width direction of the support frame two. The lower mounting frame is fixedly connected to the lower horizontal moving belt. It also includes a first synchronous belt, a second synchronous belt, and a third synchronous belt. The support frame two is equipped with a geared motor and a synchronous shaft. The synchronous shaft is rotatably mounted on the support frame two via bearings. The output end of the geared motor has a first synchronous sprocket. The synchronous shaft is fixedly fitted with three second synchronous sprockets. The upper drive shaft is fixedly fitted with a third synchronous sprocket. The lower drive shaft is fixedly fitted with a fourth synchronous sprocket. The first synchronous belt is wound around the first synchronous sprocket and the first second synchronous sprocket. The second synchronous belt is wound around the third synchronous sprocket and the second second synchronous sprocket. The third synchronous belt is wound around the fourth synchronous sprocket and the third second synchronous sprocket. The geared motor is controlled by a control device.

[0012] A plywood laminating production line includes a frame, an automatic feeding device, a hot pressing device, a plywood discharge and storage device, a wide belt conveyor, a plywood discharge conveyor, and a plywood double-sided continuous laminating device of any one of the above. The automatic feeding device, the hot pressing device, and the plywood discharge and storage device are all installed on the frame. The plywood discharge belt conveyor, the wide belt conveyor, the automatic feeding device, the hot pressing device, the plywood discharge and storage device, and the plywood discharge conveyor are arranged sequentially. Several layers of unit hot pressing plates are arranged at intervals along the height direction of the hot pressing device. The automatic feeding device has a horizontal moving frame, a drive device, a lifting frame, and a vertical cylinder. The lifting frame is vertically slidably installed on the frame via the vertical cylinder. The horizontal moving frame is horizontally slidably installed on the lifting frame via the drive device. Several layers of feeding belt conveyors for carrying plywood are arranged at intervals along the height direction of the horizontal moving frame. The discharge ends of the several layers of feeding belt conveyors are... The gaps between adjacent hot press plates are aligned layer by layer; the drive unit, several layers of loading belt conveyors, vertical cylinder 1, hot press device, plate discharge and storage device, wide belt conveyor, and plate discharge conveyor are all controlled by the control device; in use, the drive unit drives the horizontal moving frame to slide along the lifting frame 1, so that the loading belt conveyor loaded with plywood is inserted into the gap between the corresponding two layers of hot press plates; subsequently, the drive unit drives the horizontal moving frame to slide in the opposite direction along the lifting frame 1, so that the loading belt conveyor moves out of the gap between the unit hot press plates; at the same time as the loading belt conveyor moves out of the gap between the unit hot press plates, the loading belt conveyor moves the plywood towards its discharge end, and the speed at which the plywood is moved is the same as the speed at which the loading belt conveyor moves out of the gap between the corresponding two layers of hot press plates, so that the plywood falls on the corresponding unit hot press plate in place.

[0013] Optionally, the lifting frame is equipped with a slide rail at the bottom of the horizontal moving frame and racks on the front and rear sides of the horizontal moving frame. The slide rail and racks extend along the arrangement direction of the automatic feeding device and the hot pressing device. The bottom of the horizontal moving frame is provided with support rollers that roll on the top of the slide rail. The driving device includes a drive motor fixedly installed on the top of the horizontal moving frame. The drive motor is controlled by a control device. A horizontal drive shaft is mounted on the top rotating frame of the horizontal moving frame. The horizontal drive shaft extends along the conveying direction perpendicular to the belt conveyor for feeding. Vertical drive shafts are installed on the front and rear sides of the horizontal moving frame through bearings. The drive motor is connected to the horizontal drive shaft. Both ends of the horizontal drive shaft are fixedly installed with bevel gears. The top ends of the two vertical drive shafts are fixedly installed with bevel gears, and the bottom ends of the two vertical drive shafts are fixedly installed with transmission gears. The bevel gears at the top ends of the two vertical drive shafts mesh with the two bevel gears, and the transmission gears at the bottom ends of the two vertical drive shafts mesh with the two racks.

[0014] The horizontal moving frame, drive motor 1, horizontal drive shaft and vertical drive shaft are all set on the feeding end side of the feeding belt conveyor. On the side of the lifting frame facing the hot pressing device, there are several layers of support platforms arranged vertically. The several layers of support platforms correspond to several layers of feeding belt conveyors one by one, and the several layers of support platforms are aligned with the feeding ends of several layers of unit hot pressing plates one by one. Each layer of feeding belt conveyor is provided with a support wheel that rolls and supports the corresponding support platform at the bottom near the discharge end.

[0015] Optionally, the loading belt conveyor has a mounting frame, a drive axle, a driven axle, and a conveyor belt wound around the outside of the drive axle and the driven axle. Both the drive axle and the driven axle are rotatably mounted on the mounting frame. The drive axle is located on one side of the loading belt conveyor's feed end, and the driven axle is located on one side of the loading belt conveyor's discharge end. The mounting frame is fixedly connected to a horizontally moving frame on the side near the loading belt conveyor's feed end, and a support wheel is mounted on the mounting frame on the side near the loading belt conveyor's discharge end. The loading belt conveyor has an overrunning clutch. In each layer of the loading belt conveyor, the drive... One end of the axle is rotatably mounted with a drive sprocket via a bearing and an overrunning clutch. The output end of the drive motor has an output shaft, on which a drive sprocket is fixedly mounted. A driven sprocket is located at the bottom of all the loading belt conveyors on the horizontal moving frame. A drive chain is closedly sleeved on the outer side of the drive sprocket and the driven sprocket. The drive chain runs vertically through all the loading belt conveyors and meshes with the drive sprockets on all the loading belt conveyors. A second drive sprocket is also fixedly mounted on the output shaft. A second driven sprocket is fixedly mounted on the outer side of the horizontal drive shaft. A second drive chain is closedly sleeved on the outer side of the drive sprocket and the driven sprocket.

[0016] The feeding belt conveyor also has an overrunning clutch II. In each layer of the feeding belt conveyor, the side of the drive wheel shaft I away from the drive sprocket is equipped with a drive gear through a bearing and the overrunning clutch II. The discharge end of the wide belt conveyor has a swing engagement mechanism, which is arranged opposite to the drive gear. The wide belt conveyor has a mounting frame II, a drive motor II, a drive wheel shaft II, a driven wheel shaft II, and a conveyor belt II wrapped around the outside of the drive wheel shaft II and the driven wheel shaft II. The drive wheel shaft II is located at the discharge end of the wide belt conveyor and faces the automatic feeding device. The drive motor II and the drive wheel shaft II are connected by chain drive. The oscillating engagement mechanism includes an oscillating cylinder, an oscillating frame, an oscillating gear, and a fixed gear. The oscillating frame is rotatably mounted on the outer side of the end of the second drive shaft via bearings. The base of the oscillating cylinder is hinged to the second mounting frame, and the output end of the oscillating cylinder is hinged to the second oscillating frame. A mounting shaft is fixedly connected to the second oscillating frame. The oscillating gear is rotatably mounted on the mounting shaft via bearings. The fixed gear is fixedly mounted on the outer side of the second drive shaft, and the oscillating gear meshes with the fixed gear. The oscillating cylinder drives the oscillating frame to rotate along the second drive shaft, causing the oscillating gear to mesh or disengage with the drive gear in the corresponding layer of the belt conveyor for loading materials. Both the second drive motor and the oscillating cylinder are controlled by a control device.

[0017] Optionally, the board unloading and storage device has several layers of unit trays, with the infeed ends of the several layers of unit trays aligned layer by layer with the discharge ends of the several layers of unit hot press plates; in each layer of the loading belt conveyor, a pushing component is fixedly connected to the end of the mounting frame facing the hot press device; after the plywood is hot-pressed in the hot press device, the drive device drives the horizontal moving frame to slide along the frame, so that the loading belt conveyor is inserted into the gap between the corresponding two layers of unit hot press plates, and the pushing component pushes the plywood on the unit hot press plate and moves the plywood to the unit. The pallet is mounted on the pallet. The pallet storage device also includes a second lifting frame and a second vertical cylinder. The second lifting frame is vertically slidably mounted on the frame via the second vertical cylinder. The unit pallet is mounted on the second lifting frame. Each unit pallet includes a left pallet and a right pallet located on the front and rear sides of the second lifting frame. The left and right pallets are spaced apart from each other. The pallet conveyor is located at the bottom of the gap between the left and right pallets. The discharge end of the pallet conveyor extends from the side of the pallet storage device away from the hot pressing device. The second vertical cylinder is controlled by a control device.

[0018] The advantages of the technical solution in this application compared to the prior art are as follows:

[0019] Plywood can be continuously conveyed via a laminating belt conveyor. During transport, the upper and lower surfaces of the plywood are simultaneously laminated by upper and lower film rolls, respectively, achieving high lamination efficiency. After lamination, the plywood is transported to a hot-press cutting device, where the film is first fixed to the plywood by hot pressing, and then the film between adjacent plywood sheets is cut, completing the lamination process. As the laminated plywood is conveyed to the output belt conveyor, the film, already adhered to the plywood, continues to drive the movement of subsequent film rolls, ensuring that the film unfolding is synchronized with the plywood's movement. The lamination production line can automatically and continuously laminate and hot-press plywood in batches, achieving high lamination production efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A front view of the overall structure of the plywood double-sided continuous lamination device;

[0022] Figure 2 This is a front view of the structure of the belt conveyor and laminating machine used for film lamination.

[0023] Figure 3 Top view of the belt conveyor and laminating machine used for film lamination;

[0024] Figure 4 for Figure 2 Sectional view at point AA;

[0025] Figure 5 This is a schematic diagram showing the installation of the upper mandrel and the upper clamping assembly;

[0026] Figure 6 This is a schematic diagram of the installation of the lower mandrel and the lower clamping assembly;

[0027] Figure 7 for Figure 2 Enlarged views of sections A-1 and A-2 in the middle;

[0028] Figure 8 for Figure 4 Enlarged views of sections B-1 and B-2 in the middle;

[0029] Figure 9 for Figure 1 Enlarged view of a section at point C;

[0030] Figure 10 for Figure 1 Sectional view at point BB.

[0031] Figure 11 This is a front view of the overall structure of the film coating production line;

[0032] Figure 12 This is a front view of the overall structure of a high-rise multi-panel laminating press;

[0033] Figure 13 This is a front view of the automatic feeding device.

[0034] Figure 14 Left view of the automatic feeding device structure;

[0035] Figure 15 A simplified schematic diagram illustrating the process of an automatic loading device transporting plywood to a hot pressing device.

[0036] Figure 16 for Figure 13 Enlarged view of a section at point D;

[0037] Figure 17 for Figure 14 Enlarged view of a section at point E in the middle;

[0038] Figure 18 for Figure 17 Enlarged view of a section at point N in the middle;

[0039] Figure 19 for Figure 14 Enlarged view of a section at point F in the middle;

[0040] Figure 20 for Figure 14 Enlarged view of a section at point G in the middle;

[0041] Figure 21 A simplified diagram of the sensor control for the horizontal moving frame in an automatic loading device;

[0042] Figure 22 A simplified diagram of the lifting frame sensor control in an automatic loading device;

[0043] Figure 23 for Figure 12 Enlarged view of a section at point H;

[0044] Figure 24 for Figure 13 Enlarged view of a section at point I;

[0045] Figure 25 for Figure 14 Enlarged view of a section at point J;

[0046] Figure 26 This is a diagram showing the state of the oscillating meshing mechanism when the oscillating gear meshes with the drive gear.

[0047] Figure 27This is a diagram showing the state of the oscillating meshing mechanism when the oscillating gear and the drive gear are separated.

[0048] Figure 28 for Figure 13 Enlarged view of a section at point K;

[0049] Figure 29 This is a front view of the plate unloading and storage device.

[0050] Figure 30 Right view of the plate feeding and storage device structure;

[0051] Figure 31 A simplified schematic diagram illustrating the process of an automatic loading device transporting plywood to a board discharge and storage device.

[0052] Figure 32 A simplified diagram of sensor control in a hot pressing device;

[0053] Figure 33 for Figure 30 Enlarged view of a section at point M;

[0054] Figure 34 This is a simplified diagram of the sensor control in the board output and storage device.

[0055] Figure 35 for Figure 29 Enlarged view of a section at point L;

[0056] Figure 36 for Figure 11 Enlarged view of a portion of point O in the middle.

[0057] Icons: 100. Plywood; 11. Feeding belt conveyor; 12. Chain conveyor; 121. Brush motor; 122. Brush roller; 2. Laminating belt conveyor; 21. Conveying surface; 201. Support frame one; 202. Driving roller; 203. Driven roller; 204. Conveyor belt; 205. Tension roller; 206. Vertical three-axis cylinder one; 207. Horizontal three-axis cylinder one; 208. Horizontal three-axis cylinder two; 209. Pressure roller one; 210. Pressure roller two; 211. Support column two; 212. Upper support bearing; 3. Unloading belt conveyor; 4. Laminating machine; 401. Bearing frame; 402. Upper film roll; 403. Lower film roll; 404. Ground guide rail; 405. Upper mandrel; 406. Lower mandrel; 4 407. Base; 408. Vertical mounting post; 409. Upper clamping assembly; 410. Lower clamping assembly; 411. Upper bottom arc plate; 412. Upper top arc plate; 413. Lower bottom arc plate; 414. Lower top arc plate; 415. Support post one; 416. Lower support bearing; 417. Upper groove; 418. Lower groove; 419. Upper conical sleeve one; 420. Lower conical sleeve one; 421. Upper external threaded sleeve; 422. Lower external threaded sleeve; 423. Upper internal threaded sleeve; 424. Lower internal threaded sleeve; 425. Upper clamping platform; 426. Lower clamping platform; 427. Upper conical sleeve two; 428. Lower conical sleeve two; 429. Shaft wire retaining ring one; 430. Shaft wire retaining ring two; 431. Upper handle; 432. Lower handle 5. Hot pressing and cutting device; 501. Support frame two; 502. Upper hot pressing mechanism; 503. Lower hot pressing mechanism; 504. Upper cutting mechanism; 505. Lower cutting mechanism; 506. Vertical three-axis cylinder two; 507. Heat-conducting plate one; 508. Soldering iron one; 509. Vertical three-axis cylinder three; 510. Heat-conducting plate two; 511. Soldering iron two; 512. Top guide rail; 513. Upper mounting frame; 514. Upper wallpaper blade; 515. Upper drive shaft; 516. Upper driven shaft; 517. Upper horizontal moving belt; 518. Bottom guide rail; 519. Lower mounting frame; 520. Lower wallpaper blade; 521. Lower drive shaft; 522. Lower driven shaft; 523. Lower horizontal moving belt; 524. Synchronous belt one; 525. Synchronous belt 2. Synchronous Belt 3; 527. Gear Motor; 528. Synchronous Shaft; 529. Synchronous Sprocket 1; 530. Synchronous Sprocket 2; 531. Synchronous Sprocket 3; 532. Synchronous Sprocket 4; 6. Frame; 61. Hot Press Device; 611. Unit Hot Press Plate; 62. Automatic Loading Device; 621. Horizontal Moving Frame; 622. Loading Belt Conveyor; 623. Lifting Frame 1; 624. Vertical Cylinder 1; 625. Support Frame 1; 626. Longitudinal Beam 1; 627. Longitudinal Beam 2; 628. Top Beam 1; 629. Bottom Beam 1; 630. Longitudinal Beam 3; 631. Longitudinal Beam 4; 632. Top Beam 2; 633. Bottom Beam 2; 634. Lifting Roller 1; 635. Slide Rail; 636. Rack; 637. Transmission Gear;638. Support roller; 639. Drive motor 1; 640. Horizontal drive shaft; 641. Vertical drive shaft; 642. Bevel gear 1; 643. Bevel gear 2; 644. Top beam 3; 645. Bottom beam 3; 646. Longitudinal beam 5; 647. Support platform; 648. Support wheel; 649. Mounting bracket 1; 650. Drive wheel shaft 1; 651. Driven wheel shaft 1; 652. Conveyor belt 1; 653. Overrunning clutch 1; 654. Drive sprocket; 655. Output shaft; 656. Drive sprocket 1; 657. Driven sprocket 1; 658. Drive chain 1; 659. Drive sprocket 2; 660. Driven sprocket 2; 661. Drive chain 2; 662. Overrunning clutch 2; 663. Drive gear; 664. Fall arrestor Mechanism 1; 665. Rotary Cylinder 1; 666. Rotary Hook 1; 667. Hook Part 1; 668. Pushing Component; 669. Tensioning Wheel; 670. Bearing 1; 671. End Cover 1; 672. Step 1; 673. End Face 1; 674. Bearing 2; 675. End Cover 2; 676. Step 2; 677. End Face 2; 71. Wide Belt Conveyor; 711. Swinging Engaging Mechanism; 712. Mounting Frame 2; 713. Drive Motor 2; 714. Drive Wheel Shaft 2; 715. Driven Wheel Shaft 2; 716. Conveyor Belt 2; 717. Swing Cylinder; 718. Swing Frame; 719. Swing Gear; 720. Fixed Gear; 721. Mounting Shaft; 68. Plate Discharge and Storage Device; 681. Unit Support Plate; 682. Lifting Frame 2; 683. Vertical cylinder 2; 684. Left support plate; 685. Right support plate; 686. Anti-fall mechanism 2; 687. Rotating cylinder 2; 688. Rotating hook 2; 689. Hook section 2; 690. Longitudinal beam 6; 691. Longitudinal beam 7; 692. Top beam 4; 693. Bottom beam 4; 694. Longitudinal beam 8; 695. Lifting roller 2; 696. Top beam 5; 697. Bottom beam 5; 698. Top beam 6; 73. Plate conveyor; 741. Front limit deceleration travel switch of moving frame; 742. Front limit travel switch of moving frame; 743. Rear limit deceleration travel switch of moving frame; 744. Rear limit travel switch of moving frame; 745. Upper limit deceleration travel switch of lifting frame; 746. Upper limit travel switch of lifting frame; 747. Lower limit deceleration travel switch one for the lifting frame; 748. Lower limit travel switch one for the lifting frame; 749. Deceleration proximity switch one for each layer of the lifting frame; 750. Position proximity switch one for each layer of the lifting frame; 751. Photoelectric switch for hot pressing position; 752. Photoelectric switch for plate retraction position; 753. Upper limit deceleration travel switch two for the lifting frame; 754. Upper limit travel switch two for the lifting frame; 755. Lower limit deceleration travel switch two for the lifting frame; 756. Lower limit travel switch two for the lifting frame; 757. Deceleration proximity switch two for each layer of the lifting frame; 758. Position proximity switch two for each layer of the lifting frame; 759. Trigger block one; 760. Trigger block two; 761. Trigger block three; 762. Trigger block four; 763. Trigger block five; 8. Negative pressure feeding device;801. Mounting frame; 802. Feeding conveyor; 803. Lifting platform; 804. Lifting conveyor; 805. Track; 806. Negative pressure fan; 807. Fan cylinder; 808. Vertical three-axis cylinder four; 809. Pressure roller three; 810. Horizontal photoelectric switch; 9. Stacker crane. Detailed Implementation

[0058] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application. Example

[0059] This embodiment provides a plywood double-sided continuous lamination device. In this embodiment, the horizontal conveying direction of the plywood 100 is taken as the X-axis direction, and the horizontal direction perpendicular to the X-axis is taken as the Y-axis direction. Based on Figure 1 and Figure 2 As shown, the continuous double-sided laminating device for plywood 100 includes a feeding belt conveyor 11, a laminating belt conveyor 2, a board output belt conveyor 3, a laminating machine 4, a hot-press cutting device 5, and a control device. The output end of the feeding belt conveyor 11 is opposite to the feed end of the laminating belt conveyor 2, the output end of the laminating belt conveyor 2 is opposite to the feed end of the hot-press cutting device 5, and the output end of the hot-press cutting device 5 is opposite to the feed end of the board output belt conveyor 3. The feeding belt conveyor 11, the laminating belt conveyor 2, the board output belt conveyor 3, and the hot-press cutting device 5 are all controlled by the control device. The control device uses a PLC controller. Plywood 100 is continuously fed by the feeding belt conveyor 11 and transported to the laminating belt conveyor 2. Under the action of the laminating machine 4, the upper and lower surfaces are simultaneously laminated. Subsequently, the plywood 100 passes through the hot press cutting device 5 to hot press the film onto the surface of the plywood 100 and cut and separate the film between adjacent plywood 100. Finally, it is output by the board discharge belt conveyor 3.

[0060] The laminating belt conveyor 2 includes a support frame 201, a drive roller 202, a driven roller 203, and a conveyor belt 204. Both the drive roller 202 and the driven roller 203 are rotatably mounted on the support frame 201. The conveyor belt 204 is wound around the drive roller 202 and the driven roller 203. The drive roller 202 is located at the feed end of the laminating belt conveyor 2, and the driven roller 203 is located at the discharge end of the laminating belt conveyor 2. The drive roller 202 is driven by a motor via chain drive. The conveyor belt 204 is used for continuous conveying of plywood 100. The laminating machine has a support frame 401. The support frame 401 has an upper film roll 402 and a lower film roll 403 mounted on a rolling frame. The upper film roll 402 is located at the top of the laminating belt conveyor 2, and the lower film roll 403 is located at the bottom of the laminating belt conveyor 2. A tension roller 205 is mounted on the rolling frame of the support frame 201, and the tension rollers 205 are arranged side-by-side on top of the drive roller 202. The film from the upper film roll 402 wraps around the tension roller 205 and adheres to the upper surface of the plywood 100, thus covering the upper surface of the plywood 100. The film from the upper film roll 402 extends to the hot-press cutting device 5 and is hot-pressed onto the upper surface of the plywood 100. In this way, after the film adheres to the plywood 100, it can continue to move forward with the plywood 100, pulling the subsequent film unrolled from the upper film roll 402. The lower film roll 403 wraps around the drive roller 202 and is held between the upper surface of the conveyor belt 204 and the lower surface of the plywood 100 to cover the lower surface of the plywood 100. The film from the lower film roll 403 extends to the hot-press cutting device 5 and is hot-pressed onto the lower surface of the plywood 100. After adhesion, the film continues to move forward with the plywood 100, pulling the subsequent film unroll from the lower film roll 403. During the transport of the plywood 100, the upper and lower surfaces of the plywood 100 are simultaneously covered by the upper film roll 402 and the lower film roll 403, respectively, allowing for continuous feeding and high film-covering efficiency.

[0061] based on Figure 2As shown, the support frame 201 is also equipped with a vertical three-axis cylinder 206, a horizontal three-axis cylinder 207, and a horizontal three-axis cylinder 208. All three cylinders are controlled by a control device. The vertical three-axis cylinder 206 is located at the top of the drive roller 202, and the tension roller 205 is installed at the bottom output end of the vertical three-axis cylinder 206. The extension of the output end of the vertical three-axis cylinder 206 allows the tension roller 205 to press firmly against the upper surface of the plywood 100. Specifically, during production, the tension roller 205 remains pressed against the upper surface of the plywood 100 and rolls under the influence of the plywood 100. It only stops and rises when production is complete or when the upper film roll 402 needs to be replaced. In this way, after the film roll 402 passes over the tension roller 205, it can be pressed and attached to the upper surface of the plywood 100. The tension roller 205 rolls under the drive of the plywood 100. The horizontal three-axis cylinder 207 is located on the side of the tension roller 205 facing the feed end of the film-coating belt conveyor 2. The output end of the horizontal three-axis cylinder 207 is equipped with a pressing roller 209. The extension of the output end of the horizontal three-axis cylinder 207 can press the pressing roller 209 against the tension roller 205. Under the drive of the tension roller 205, the pressing roller 209 rotates synchronously to press the film and prevent the film roll 402 from shifting. Similarly, the horizontal three-axis cylinder 208 is located on the side of the drive roller 202 facing the feed end of the belt conveyor 2 for film coating. The output end of the horizontal three-axis cylinder 208 is equipped with a pressing roller 210. The extension of the output end of the horizontal three-axis cylinder 208 can press the pressing roller 210 against the drive roller 202. Under the drive of the drive roller 202, the pressing roller 210 rotates synchronously to press the film coating and prevent the film coating of the lower film roll 403 from shifting.

[0062] In actual use, the length of a single piece of plywood 100 is greater than the distance from the tension roller 205 to the hot press cutting device 5. When the head end of the plywood 100 is hot-pressed with the film in the hot press cutting device 5, the tail end is still pressed and conveyed by the tension roller 205. Therefore, after the film is bonded to the head end of the plywood 100, the plywood 100 can drive the film to move and unfold.

[0063] Furthermore, based on Figures 2 to 8As shown, the laminating machine 4 also includes a ground guide rail 404, an upper mandrel 405, and a lower mandrel 406. The ground guide rail 404 is located at the bottom of the laminating belt conveyor 2 and extends along the width direction of the laminating belt conveyor 2. Specifically, the ground guide rail 404 extends from the bottom of the laminating belt conveyor 2 to the outside side of the laminating belt conveyor 2 along the negative Y-axis direction. The support frame 401 includes a base 407 slidably disposed on the ground guide rail 404. A vertical mounting column 408 is provided on one side of the base 407, and an upper clamping assembly 409 and a lower clamping assembly 410 are provided along the height direction of the vertical mounting column 408. The upper clamping assembly 409 and the lower clamping assembly 410 are used to mount the upper mandrel 405 and the lower mandrel 406, respectively. The upper clamping assembly 409 includes an upper bottom arc plate 411 and an upper top arc plate 412 bolted to the top of the upper bottom arc plate 411, specifically connected by star bolts for easy manual connection and release. The upper bottom arc plate 411 is fixedly connected to the vertical mounting post 408. The lower clamping assembly 410 includes a lower bottom arc plate 413 and a lower top arc plate 414 bolted to the top of the lower bottom arc plate 413, specifically connected by star bolts for easy manual connection and release. The lower bottom arc plate 413 is fixedly connected to the vertical mounting post 408. In this embodiment, the upper bottom arc plate 411, upper top arc plate 412, lower bottom arc plate 413, and lower top arc plate 414 are all made of nylon arc plates. On the other side of the base 407, there is a support column 415. Two lower support bearings 416 opposite to the lower clamping assembly 410 are installed side by side on the top of the support column 415. On the top of the support frame 201, there is a support column 211. Two upper support bearings 212 opposite to the upper clamping assembly 409 are installed side by side on the top of the support column 211.

[0064] During installation, one end of the upper mandrel 405 is clamped between the upper top arc plate 412 and the upper bottom arc plate 411. The end of the upper mandrel 405 has an upper groove 417, within which the upper top arc plate 412 and the upper bottom arc plate 411 are clamped, allowing the upper mandrel 405 to rotate within the upper top arc plate 412 and the upper bottom arc plate 411 while preventing axial movement. The other end of the upper mandrel 405 is rolledly supported by two upper support bearings 212. One end of the lower mandrel 406 is clamped between the lower top arc plate 414 and the lower bottom arc plate 413. Similarly, the end of the lower mandrel 406 has a lower groove 418, within which the lower top arc plate 414 and the lower bottom arc plate 413 are clamped, allowing the lower mandrel 406 to rotate within the lower top arc plate 414 and the lower bottom arc plate 413 while preventing axial movement. The other end of the lower mandrel 406 is rolled and supported by two lower support bearings 416. The upper film roll 402 is sleeved on the outside of the upper mandrel 405, and the lower film roll 403 is sleeved on the outside of the lower mandrel 406.

[0065] Specifically, an upper conical sleeve 419 is bolted to the outer side of the upper mandrel 405 near the upper clamping assembly 409. An upper externally threaded sleeve 421 with external threads is bolted to the outer side of the upper mandrel 405 near the upper support bearing 212. An upper internally threaded sleeve 423 is screwed onto the outer thread of the upper externally threaded sleeve 421. The outer side of the upper internally threaded sleeve 423 has an upper clamping platform 425 and a shaft wire retaining ring 429. An upper conical sleeve 427 is fitted onto the outer side of the upper internally threaded sleeve 423. The conical sleeve 427 is clamped between the upper clamping platform 425 and the shaft wire retaining ring 429 for fixation. The end of the upper internally threaded sleeve 423 facing the upper support bearing 212 has an upper handle 431. After the upper film roll 402 is fitted onto the outside of the upper mandrel 405, one end of its inner ring abuts against the conical surface of the upper conical sleeve 419, and the other end abuts against the conical surface of the upper conical sleeve 427. The operator can bring the upper conical sleeve 427 closer to the upper conical sleeve 419 by rotating the upper handle 431 to clamp and lock the upper film roll 402. Similarly, the lower conical sleeve 420 is fixedly fitted onto the outer side of the lower mandrel 406 near the lower clamping assembly 410 by bolts, and the lower external threaded sleeve 422 with external threads is fixedly fitted onto the outer side of the lower mandrel 406 near the lower support bearing 416 by bolts. The outer thread of the lower external threaded sleeve 422 is screwed onto the lower internal threaded sleeve 424. The lower internal threaded sleeve 424 has a lower clamping platform 426 on its outer side and a second shaft wire retaining ring 430 fitted thereon. A lower conical sleeve 428 is fitted on the outer side of the lower internal threaded sleeve 424, and the lower conical sleeve 428 is clamped between the lower clamping platform 426 and the second shaft wire retaining ring 430 for fixation. The end of the lower internal threaded sleeve 424 facing the lower support bearing 416 has a lower handle 432. After the lower film roll 403 is fitted onto the outer side of the lower mandrel 406, one end of its inner ring abuts against the conical surface of the first lower conical sleeve 420, and the other end abuts against the conical surface of the second lower conical sleeve 428. By rotating the lower handle 432, the operator can bring the second lower conical sleeve 428 closer to the first lower conical sleeve 420 to clamp and lock the lower film roll 403. When the upper film roll 402 and lower film roll 403 need to be replaced, after stopping the machine, slide the support frame 401 along the ground guide rail 404 to move it out of the side of the film-coating belt conveyor 2. It should be noted that since the upper support bearing 212 is located on the support frame 201, it does not move with the support frame 401. Therefore, the operator needs to manually lift the upper mandrel 405 near the end of the upper support bearing 212. After the support frame 401 is moved out, disassemble the upper top arc plate 412 and the lower top arc plate 414 to remove the upper mandrel 405 and lower mandrel 406 along with the used upper film roll 402 and lower film roll 403. Then, rotate the upper handle 431 in the reverse direction to separate the upper internal threaded sleeve 423 from the upper external threaded sleeve 421 and remove it from the upper mandrel 405 shaft, thus allowing the upper film roll 402 to be disassembled and replaced.By rotating the lower handle 432 in the opposite direction, the lower internal threaded sleeve 424 separates from the lower external threaded sleeve 422 and is removed from the lower mandrel 406, allowing the lower film roll 403 to be disassembled and replaced.

[0066] Furthermore, based on Figure 1 , Figure 9 and Figure 10 As shown, the hot-press cutting device 5 includes a support frame 501, on which two sets of upper hot-press mechanisms 502, two sets of lower hot-press mechanisms 503, an upper cutting mechanism 504, and a lower cutting mechanism 505 are mounted. The laminating belt conveyor 2 has a conveying surface 21, which is the plane on which the plywood 100 moves. The two sets of upper hot-press mechanisms 502 and the two sets of lower hot-press mechanisms 503 are symmetrically arranged on the upper and lower sides of the plane on which the conveying surface 21 is located. The upper cutting mechanism 504 and the lower cutting mechanism 505 are symmetrically arranged on the upper and lower sides of the plane on which the conveying surface 21 is located, with the upper cutting mechanism 504 located between the two sets of upper hot-press mechanisms 502 and the lower cutting mechanism 505 located between the two sets of lower hot-press mechanisms 503. In specific use, based on Figure 9 As shown, plywood 100 is continuously fed, with a certain gap between the head and tail ends of adjacent plywood 100 pieces. However, the film is continuously unfolded, so before the film is cut, the film on the upper and lower surfaces of adjacent plywood 100 pieces is integral. When the gap between adjacent plywood 100 pieces aligns with the upper cutting mechanism 504 and the lower cutting mechanism 505, two sets of upper hot pressing mechanisms 502 are respectively aligned with the top of the head edge and the top of the tail edge of the two plywood 100 pieces, and two sets of lower hot pressing mechanisms 503 are respectively aligned with the bottom of the head edge and the bottom of the tail edge of the two plywood 100 pieces. At this time, the two sets of upper hot pressing mechanisms 502 and the two sets of lower hot pressing mechanisms 503 operate simultaneously, bonding the film to the upper and lower surfaces of the edges of the two plywood 100 pieces by hot pressing. Subsequently, the upper cutting mechanism 504 and the lower cutting mechanism 505 operate simultaneously to cut the film at the gaps between the plywood 100s, thus separating adjacent plywood 100s. Meanwhile, since the film is already bonded to the surface of the plywood 100, as the rear plywood 100 continues to move, it can drive the upper film roll 402 and the lower film roll 403 to continue unfolding.

[0067] Specifically, based on Figure 9 and Figure 10As shown, the upper hot pressing mechanism 502 includes a vertical triaxial cylinder 506, a heat-conducting plate 507, and several soldering irons 508. The vertical triaxial cylinder 506 is fixedly mounted on the support frame 501 with its output end located at the bottom. The heat-conducting plate 507 is fixedly mounted at the bottom of the output end of the vertical triaxial cylinder 506 and extends along the conveying direction perpendicular to the laminating belt conveyor 2, i.e., along the Y-axis. The several soldering irons 508 are arranged at intervals along the conveying direction perpendicular to the laminating belt conveyor 2, i.e., along the Y-axis. The several soldering irons 508 are fixedly mounted on the top of the heat-conducting plate 507, with their heating ends abutting against the top of the heat-conducting plate 507. The lower hot pressing mechanism 503 includes a vertical triaxial cylinder 509, a heat-conducting plate 510, and several soldering irons 511. The vertical triaxial cylinder 509 is fixedly mounted on the support frame 501 with its output end at the top. The heat-conducting plate 510 is fixedly mounted on the top of the output end of the vertical triaxial cylinder 509 and extends along the conveying direction perpendicular to the laminating belt conveyor 2, i.e., along the Y-axis. The several soldering irons 511 are arranged at intervals along the conveying direction perpendicular to the laminating belt conveyor 2, i.e., along the Y-axis. The several soldering irons 511 are fixedly mounted on the bottom of the heat-conducting plate 510 with their heating ends abutting against the bottom of the heat-conducting plate 510. In this embodiment, there are six soldering irons 508 and six soldering irons 511. Both the heat-conducting plate 507 and the heat-conducting plate 510 are made of aluminum alloy plates, but copper plates can also be used. In use, a photoelectric switch connected to the control device is installed on the support frame 2 501. When the gap between two adjacent plywood boards 100 moves to align with the upper cutting mechanism 504 and the lower cutting mechanism 505, the photoelectric switch sends a signal to the control device, which then stops the feeding belt conveyor 11, the laminating belt conveyor 2, and the board discharge belt conveyor 3. Subsequently, the control device controls the two sets of upper hot pressing mechanisms 502 and the two sets of lower hot pressing mechanisms 503 to operate simultaneously, and the output ends of the vertical three-axis cylinders 2 506 and 3 509 extend synchronously, so that the heat-conducting plate 1 507 and the heat-conducting plate 2 510 respectively contact the laminating film on the upper and lower surfaces of the plywood board 100. The heat generated by soldering iron 508 and soldering iron 511 is transferred to the upper and lower surface films of plywood 100 through heat-conducting plate 507 and heat-conducting plate 510, respectively, so that the films can be bonded to plywood 100.

[0068] based on Figure 9 and Figure 10As shown, the upper cutting mechanism 504 includes a top guide rail 512, an upper horizontal conveying mechanism, an upper mounting frame 513, and two upper wallpaper blades 514. The top guide rail 512 is mounted on the top of the support frame 501 and extends along the Y-axis. The top of the upper mounting frame 513 is slidably mounted on the top guide rail 512, and the two upper wallpaper blades 514 are fixedly mounted on the bottom of the upper mounting frame 513 and located in the film conveying path of the upper film roll 402. When the upper mounting frame 513 slides along the top guide rail 512, the upper wallpaper blades 514 can cut the portion of the top film located in the gap between the two plywood boards 100. The two upper wallpaper blades 514 are located on the same plane and their cutting edges are arranged opposite to each other along the width direction of the film conveyor 2, so that the upper mounting frame 513 can cut the film regardless of whether it moves in the positive or negative Y-axis direction. The upper horizontal conveying mechanism includes an upper drive shaft 515, an upper driven shaft 516, and an upper horizontal moving belt 517 wound around the upper drive shaft 515 and the upper driven shaft 516, located on both sides of the support frame 501 in the width direction. The upper mounting frame 513 is fixedly connected to the upper horizontal moving belt 517. Similarly, the lower cutting mechanism 505 includes a bottom guide rail 518, a lower horizontal conveying mechanism, a lower mounting frame 519, and two lower wallpaper blades 520. The bottom guide rail 518 is installed at the bottom of the support frame 501 and extends along the Y-axis. The bottom of the lower mounting frame 519 is slidably mounted on the bottom guide rail 518, and the two lower wallpaper blades 520 are fixedly mounted on the top of the lower mounting frame 519 and located in the film conveying path of the lower film roll 403. When the lower mounting frame 519 slides along the bottom guide rail 518, the lower wallpaper blades 520 can cut off the portion of the bottom film located in the gap between the two plywood boards 100. Two lower wallpaper blades 520 are located on the same plane, with their blades facing away from each other along the width direction of the laminating belt conveyor 2. This allows the lower mounting frame 519 to cut the laminating film regardless of whether it moves in the positive or negative Y-axis direction. The lower horizontal conveying mechanism includes a lower drive shaft 521, a lower driven shaft 522, and a lower horizontal moving belt 523 located on both sides of the support frame 501 in the width direction. The lower mounting frame 519 is fixedly connected to the lower horizontal moving belt 523. It also includes synchronous belt 1 524, synchronous belt 2 525 and synchronous belt 3 526. Support frame 2 501 is equipped with geared motor 527 and synchronous shaft 528. Synchronous shaft 528 is rotatably mounted on support frame 2 501 via bearings. The output end of geared motor 527 has synchronous sprocket 1 529. Synchronous shaft 528 is fixedly sleeved with three synchronous sprockets 2 530. Upper drive shaft 515 is fixedly sleeved with synchronous sprocket 3 531. Lower drive shaft 521 is fixedly sleeved with synchronous sprocket 4 532. Synchronous belt 1 524 is wound around synchronous sprocket 1 529 and the first synchronous sprocket 2 530. Synchronous belt 2 525 is wound around synchronous sprocket 3 531 and the second synchronous sprocket 2 530. Synchronous belt 3 526 is wound around synchronous sprocket 4 532 and the third synchronous sprocket 2 530. Geared motor 527 is controlled by a control device.

[0069] In the initial state, the upper mounting bracket 513 is located at the end of the top guide rail 512 in the negative Y-axis direction, and the lower mounting bracket 519 is located at the end of the bottom guide rail 518 in the positive Y-axis direction. When the control device controls the upper hot pressing mechanism 502 and the lower hot pressing mechanism 503 to operate, pressing the heat-conducting plate 1 507 and the heat-conducting plate 2 510 onto the upper and lower surfaces of the plywood 100, the control device controls the reduction motor 527 to operate. The reduction motor 527 drives the synchronous shaft 528 to rotate through the synchronous belt 1 524. The synchronous shaft 528 drives the upper drive shaft 515 and the lower drive shaft 521 to rotate simultaneously through the synchronous belt 2 525 and the synchronous belt 3 526, so that the upper horizontal moving belt 517 and the lower horizontal moving belt 523 move synchronously. The upper mounting bracket 513 and the lower mounting bracket 519 slide synchronously along the top guide rail 512 and the bottom guide rail 518 respectively. The upper mounting bracket 513 moves in the positive Y-axis direction, and the lower mounting bracket 519 moves in the negative Y-axis direction. The upper wallpaper blade 514 cuts the film on the upper surface of the plywood 100, and the lower wallpaper blade 520 cuts the film on the lower surface of the plywood 100. Both ends of the top guide rail 512 and the bottom guide rail 518 are equipped with photoelectric switches. When the upper mounting bracket 513 moves to the end of the top guide rail 512 in the positive Y-axis direction, and the lower mounting bracket 519 moves to the end of the bottom guide rail 518 in the negative Y-axis direction, the photoelectric switches send a signal to the control device. The control device controls the reduction motor 527 to stop operating and controls the output ends of the vertical three-axis cylinders 506 and 509 to retract synchronously, causing the heat-conducting plate 507 and 510 to separate from the plywood 100, thus completing the hot-press cutting. Subsequently, the control device starts the feeding belt conveyor 11, the laminating belt conveyor 2, and the unloading belt conveyor 3 to continue conveying the plywood 100, aligning the gaps between the subsequent two plywood 100s with the upper cutting mechanism 504 and the lower cutting mechanism 505 for the next round of hot pressing and cutting. During this next round of hot pressing and cutting, the reduction motor 527 reverses its direction, driving the upper mounting frame 513 to move in the negative Y-axis direction of the top guide rail 512, and the lower mounting frame 519 to move in the positive Y-axis direction of the bottom guide rail 518 for cutting. After cutting, the system returns to the initial state described above. Except for the direction of movement of the upper mounting frame 513 and the lower mounting frame 519, the process of this next round of hot pressing and cutting is the same as the first round.

[0070] Furthermore, based on Figure 1As shown, the system also includes a chain conveyor 12, with its discharge end opposite to the feed end of the feeding belt conveyor 11. The chain conveyor 12 is equipped with a brush motor 121, and a brush roller 122 spanning the top conveying surface 21 of the chain conveyor 12 is installed at the output end of the brush motor 121. The chain conveyor 12 and the brush motor 121 are controlled by a control device. In actual use, the brush roller 122 contacts the upper surface of the plywood 100, and the linear velocity direction at the contact point of the brush roller 122 is opposite to the movement direction of the plywood 100. When the plywood 100 passes the brush roller 122, the brush roller 122 cleans the debris on the upper surface of the plywood 100, preventing the debris from affecting the lamination. Debris on the lower surface of the plywood 100 can fall off under gravity. Example

[0071] This embodiment provides a coating production line, based on Figure 11 and Figure 12 As shown, the device includes a frame 6, an automatic loading device 62, a hot pressing device 61, a board output and storage device 68, a wide belt conveyor 71, a board output conveyor 73, and the plywood double-sided continuous film coating device shown in Example 1. The automatic loading device 62, the hot pressing device 61, and the board output and storage device 68 are all installed on the frame 6. The board output belt conveyor 3, the wide belt conveyor 71, the automatic loading device 62, the hot pressing device 61, the board output and storage device 68, and the board output conveyor 73 are arranged sequentially.

[0072] Several layers of unit hot press plates 611 are arranged at intervals along the height direction of the hot press device 61. The hot press device 61 and its unit hot press plates 611 all adopt the hot press device and unit hot press plates disclosed in the applicant's Chinese invention patent application with publication number CN116749288B, entitled "Intelligent High-Rise Multi-Plate Automatic Hot Press Machine." Their structure and principle are prior art and will not be described further. The hot press device 61 is controlled by a control device. Figures 11 to 15 As shown, the automatic loading device 62 includes a horizontal moving frame 621, a drive unit, a lifting frame 623, and a vertical cylinder 624. The lifting frame 623 is vertically slidably mounted on the frame 6 via the vertical cylinder 624. The horizontal moving frame 621 is horizontally slidably mounted on the lifting frame 623 via the drive unit. Several layers of loading belt conveyors 622 for carrying plywood are arranged at intervals along the height direction of the horizontal moving frame 621. The gaps between the discharge ends of the several layers of loading belt conveyors 622 and the adjacent unit hot press plates 611 are aligned layer by layer. The drive unit, the several layers of loading belt conveyors 622, the vertical cylinder 624, the hot press device 61, the plate discharge and storage device 68, the wide belt conveyor 71, and the plate discharge conveyor 73 are all controlled by a control device. In this embodiment, both the unit hot press plate 611 and the loading belt conveyors 622 have sixteen layers.

[0073] Vertical cylinder 624 extends and retracts, driving lifting frame 623 to rise and fall, aligning the feed end of the loading belt conveyor 622 layer by layer with the discharge end of the wide belt conveyor 71. The wide belt conveyor 71 transports plywood 100 pre-laminated with film from the double-sided continuous laminating device, conveyed from the discharge belt conveyor 3 to the wide belt conveyor 71. In the double-sided continuous laminating device, the plywood 100 is only heat-pressed to the front and rear edges, with the middle not yet fully fixed. Therefore, it needs to be transported to the heat-pressing device 61 for further heat-pressing. After plywood 100 is transported by wide belt conveyor 71 to one of the layer loading belt conveyors 622, vertical cylinder 624 drives lifting frame 623 to rise, aligning the bottom layer loading belt conveyor 622 with the discharge end of wide belt conveyor 71. The next piece of plywood 100 on wide belt conveyor 71 can then be transported to the next layer loading belt conveyor 622, and so on, until all layers of loading belt conveyors 622 are loaded with plywood 100. Subsequently, the drive unit drives horizontal moving frame 621 to slide along frame 6, inserting the loading belt conveyor 622 loaded with plywood 100 into the gap between the corresponding two unit hot press plates 611. Then, the drive unit drives horizontal moving frame 621 to slide in the opposite direction along frame 6, moving the loading belt conveyor 622 out of the gap between the unit hot press plates 611. As the loading belt conveyor 622 moves out of the gap between the unit hot press plates 611, it simultaneously moves the plywood 100 towards its discharge end, and the speed at which the plywood 100 is moved is the same as the speed at which the loading belt conveyor 622 moves out of the gap between the corresponding two unit hot press plates 611. Figure 15 The backward speed of the loading belt conveyor 622 in the negative X-axis direction is equal to the speed at which the loading belt conveyor 622 transports the plywood 100 in the positive X-axis direction. This allows the plywood 100 to fall onto the corresponding unit hot press plate 611 in place, completing the transfer of the plywood 100 from the automatic loading device 62 to the hot press device 61. Compared to the prior art where the plywood 100 is transferred using an automatic moving device for holding the board and a rotary pusher robot, this application integrates the function of transferring the plywood 100 into the automatic loading device 62, significantly reducing the complexity of the equipment, lowering costs, and improving equipment stability. Finally, the plywood 100, after being hot-pressed in the hot press device 61, is transferred to the board discharge and storage device 68 and removed by the board discharge conveyor 73.

[0074] In this embodiment, based on Figure 2As shown, the frame 6 is symmetrically equipped with support frames 625 on both sides of the automatic loading device 62 along the Y-axis. Each support frame 625 has a rectangular longitudinal beam 626, a second longitudinal beam 627, a top beam 628, and a bottom beam 629. The lifting frame 623 is also located on both sides of the automatic loading device 62 along the Y-axis, and each rectangular frame has a third longitudinal beam 630, a fourth longitudinal beam 631, a second top beam 632, and a second bottom beam 633. Specifically, during installation, two vertical cylinders 624 are located at the two rectangular frames respectively. The top of each vertical cylinder 624 is hinged to the top beam 628, and the bottom is hinged to the bottom beam 633. The two vertical cylinders 624 synchronously extend and retract, driving the lifting frame 623 to rise and fall along the support frames 625. Meanwhile, the lifting frame 623 is equipped with lifting rollers 634 mounted on the top beam 632 and the bottom beam 633. Each side of the rectangular frame of the lifting frame 623 has four lifting rollers 634, which are arranged in pairs, rolling and clamping the longitudinal beams 626 and 627 on opposite sides along the X-axis. Thus, during the lifting process, the lifting rollers 634 roll along the longitudinal beams 626 and 627, clamping the support frame 625, providing support while ensuring the stability of the lifting frame 623.

[0075] Furthermore, based on Figure 13 , Figure 14 ,as well as Figures 16 to 19As shown, a slide rail 635 located at the bottom of a horizontal moving frame 621 and racks 636 located on the front and rear sides of the horizontal moving frame 621 are mounted on a lifting frame 623. Both the slide rail 635 and racks 636 extend along the arrangement direction of the automatic loading device 62 and the hot pressing device 61. Support rollers 638, which roll and support the top of the slide rail 635, are provided at the bottom of the horizontal moving frame 621. Meanwhile, the driving device includes a drive motor 639 fixedly mounted on the top of the horizontal moving frame 621. The drive motor 639 is controlled by a control device. A horizontal drive shaft 640 is mounted on the top of the horizontal moving frame 621, extending along the conveying direction perpendicular to the loading belt conveyor 622, i.e., along the Y-axis. Vertical drive shafts 641 are mounted on the front and rear sides of the horizontal moving frame 621 via bearings. The drive motor 639 is connected to the horizontal drive shaft 640. Bevel gears 642 are fixedly mounted at both ends of the horizontal drive shaft 640. Both vertical drive shafts 641 have bevel gears 643 fixedly mounted at their top ends, and transmission gears 637 fixedly mounted at their bottom ends. The bevel gears 643 at the top ends of the two vertical drive shafts 641 mesh with two bevel gears 642, and the transmission gears 637 at the bottom ends of the two vertical drive shafts 641 mesh with two racks 636. With this configuration, the drive motor 639 drives the horizontal drive shaft 640 to rotate. The horizontal drive shaft 640, through the bevel gears 642 and 643 at both ends, drives the two vertical drive shafts 641 to rotate synchronously. The transmission gears 637 at the bottom ends of the vertical drive shafts 641 roll along the racks 636, thus enabling the horizontal moving frame 621 to move horizontally along the X-axis. During horizontal movement, the support rollers 638 move along the slide rails 635, providing support for the entire horizontal moving frame 621.

[0076] In this embodiment, the horizontal moving frame 621 is rectangular, comprising a top beam 644, a bottom beam 645, and two longitudinal beams 646, which are symmetrically arranged on both sides along the Y-axis. A drive motor 639 is mounted on top of the top beam 644, and a loading belt conveyor 622 is mounted and arranged between the two longitudinal beams 646. The portions of the two vertical drive shafts 641 near the top are rotatably mounted on the top beam 644 near both ends via bearings, and a bevel gear 643 is located at the end of the vertical drive shaft 641 that extends out of the top of the top beam 644.

[0077] Meanwhile, in this embodiment, based on Figure 21As shown, a front limit deceleration travel switch 741, a front limit travel switch 742, a rear limit deceleration travel switch 743, and a rear limit travel switch 744, all connected to a control device, are installed at the bottom of the lifting frame 623. A trigger block 759 is located at the bottom of the horizontal moving frame 621. The front limit deceleration travel switches 741 and 742 are positioned near the feed end of the hot pressing device 61, with the front limit deceleration travel switch 741 located on the side of the front limit travel switch 742 away from the hot pressing device 61. The rear limit deceleration travel switches 743 and 744 are positioned away from the feed end of the hot pressing device 61, with the rear limit travel switch 744 located on the side of the rear limit deceleration travel switch 743 away from the hot pressing device 61. When the horizontal moving frame 621 moves towards the hot pressing device 61 along the positive X-axis, the trigger block 759 first contacts the contact of the front limit deceleration travel switch 741 of the moving frame and drives the contact to rotate. After the front limit deceleration travel switch 741 is triggered, it sends a signal to the control device. The control device controls the drive motor 639 to decelerate the movement of the horizontal moving frame 621. Subsequently, the trigger block 759 contacts the contact of the front limit travel switch 742 of the moving frame and drives the contact to rotate. After the front limit travel switch 742 is triggered, it sends a signal to the control device. The control device controls the drive motor 639 to stop driving the horizontal moving frame 621 to move. At this time, it indicates that all the material loading belt conveyors 622 have entered the gap of the unit hot pressing plate 611. Subsequently, the control device controls drive motor 639 to move horizontal moving frame 621 in the negative X-axis direction, and simultaneously controls the loading belt conveyor 622 to transport plywood 100 in the positive X-axis direction at a speed equal to that of horizontal moving frame 621 moving in the reverse direction. Plywood 100 then falls onto the corresponding unit hot press plate 611. During the reverse movement of horizontal moving frame 621 in the negative X-axis direction, trigger block 759 first contacts the contact of the rear limit deceleration travel switch 743 of the moving frame and causes the contact to rotate. After being triggered, the rear limit deceleration travel switch 743 sends a signal to the control device, which then controls drive motor 639 to decelerate the movement of horizontal moving frame 621. Subsequently, trigger block 759 contacts the contact of the rear limit travel switch 744 of the moving frame and causes the contact to rotate. After being triggered, the rear limit travel switch 744 sends a signal to the control device, which then controls drive motor 639 to stop moving horizontal moving frame 621, and horizontal moving frame 621 moves in the reverse direction to its designated position.

[0078] Please refer to Figure 22 . Figure 22The left side of the dashed line shows the sensor triggering status diagram when the lifting frame 623 descends to the lower limit position, and the right side of the dashed line shows the sensor triggering status diagram when the lifting frame 623 rises to the upper limit position. Specifically, the frame 6 has two upper limit deceleration travel switches, 745 and 746, located near the upper limit of the lifting frame 623, with switch 746 positioned above switch 745. Similarly, the frame 6 has two lower limit deceleration travel switches, 747 and 748, located near the lower limit of the lifting frame 623, with switch 748 positioned below switch 747. The lifting frame 623 has a trigger block 760 at the top and a trigger block 761 at the bottom. Each layer of the belt conveyor 622 for loading is equipped with a lifting frame deceleration proximity switch 749 and a lifting frame end-position proximity switch 750 facing the discharge end of the wide belt conveyor 71. The lifting frame deceleration proximity switch 749 is located above the lifting frame end-position proximity switch 750. The lifting frame upper limit deceleration travel switch 745, lifting frame upper limit travel switch 746, lifting frame lower limit deceleration travel switch 747, lifting frame lower limit travel switch 748, lifting frame deceleration proximity switch 749, and lifting frame end-position proximity switch 750 are all connected to the control device.

[0079] In the initial state, the lifting frame 623 is at its lower limit position, and the feed end of the top-level loading belt conveyor 622 is aligned with the discharge end of the wide belt conveyor 71. The wide belt conveyor 71 transports plywood 100 to the top-level loading belt conveyor 622. Both the top-level loading belt conveyor 622 and the discharge end of the wide belt conveyor 71 are equipped with photoelectric switches (not shown in the attached diagram). When the plywood 100 moves onto the loading belt conveyor 622, the photoelectric switch sends a signal indicating that the plywood 100 has moved into position to the control device. The control device controls the vertical cylinder 624 to drive the lifting frame 623 upward. The lifting frame's deceleration proximity switch 749, located on the second-to-last loading belt conveyor 622, first aligns with the wide belt conveyor 71. After the signal is sent to the control device, the control device controls the vertical cylinder 624 to drive the lifting frame 623 to decelerate and rise. Subsequently, the lifting frame aligns with the wide belt conveyor 71 at each layer's arrival proximity switch 750. The lifting frame arrival proximity switch 750 sends a signal to the control device, which then controls the vertical cylinder 624 to stop driving the lifting frame 623 to rise. At this time, the second layer loading belt conveyor 622 aligns with the wide belt conveyor 71, and the wide belt conveyor 71 can then transport plywood 100 to the second layer loading belt conveyor 622. This process continues until all layers of loading belt conveyors 622 are loaded with plywood 100. Subsequently, the control device controls the vertical cylinder 624 to drive the lifting frame 623 to rise until the trigger block 760 contacts the contact of the upper limit deceleration limit switch 745 of the lifting frame, causing the contact to rotate. The upper limit deceleration limit switch 745 of the lifting frame sends a signal to the control device, and the control device controls the vertical cylinder 624 to drive the lifting frame 623 to decelerate and rise. Then, the trigger block 760 contacts the contact of the upper limit limit switch 746 of the lifting frame, causing the contact to rotate. The upper limit limit switch 746 of the lifting frame sends a signal to the control device, and the control device controls the vertical cylinder 624 to stop driving the lifting frame 623 to rise. The lifting frame 623 moves to the upper limit position. At this time, the belt conveyor 622 for each layer of material loading is aligned with the gap of the unit hot press plate 611, and the plywood 100 can be transported to the hot press device 61. When all the plywood 100 on the belt conveyor 622 is transported to the hot press 61, and the horizontal moving frame 621 has moved in the negative X-axis direction to the trigger block 759 and the rear limit switch 744 of the moving frame, the control device controls the lifting frame 623 to descend.When the lifting frame 623 descends to the point where the trigger block 761 contacts the contact of the lower limit deceleration travel switch 747 and causes the contact to rotate, the lower limit deceleration travel switch 747 sends a signal to the control device. The control device then controls the vertical cylinder 624 to decelerate and descend the lifting frame 623. Subsequently, when the lifting frame 623 descends to the point where the trigger block 761 contacts the contact of the lower limit travel switch 748 and causes the contact to rotate, the lower limit travel switch 748 sends a signal to the control device. The control device then controls the vertical cylinder 624 to stop descending the lifting frame 623. The lifting frame 623 descends to the lower limit position and returns to the point where the feed end of the top layer loading belt conveyor 622 aligns with the discharge end of the wide belt conveyor 71, returning to the initial state described above, and the next cycle begins.

[0080] Furthermore, based on Figure 12 , Figure 13 , Figure 23 and Figure 24 As shown, the horizontal moving frame 621, drive motor 639, horizontal drive shaft 640, and vertical drive shaft 641 are all located on the feeding end side of the loading belt conveyor 622. In this way, when the loading belt conveyor 622 extends into the unit hot press plate 611, the horizontal moving frame 621, drive motor 639, horizontal drive shaft 640, and vertical drive shaft 641 will never enter the range of the hot press device 61, thus avoiding interference with the hot press device 61. Because the feeding belt conveyor 622 extends a long distance along the X-axis, several layers of support platforms 647 are vertically arranged on the side of the lifting frame 623 facing the hot pressing device 61 to support it. These support platforms 647 correspond sequentially to the layers of feeding belt conveyors 622, and are aligned sequentially with the feed ends of the unit hot pressing plates 611. Each layer of feeding belt conveyor 622 has a support wheel 648 rolling on the corresponding support platform 647 near its bottom end near the discharge end. Thus, each layer of feeding belt conveyor 622 is supported on the support platform 647 by the support wheel 648. When the feeding belt conveyor 622 moves into the gap of the unit hot pressing plate 611, the support wheel 648 rolls from the support platform 647 to the corresponding unit hot pressing plate 611, ensuring that the discharge end of the feeding belt conveyor 622 is always supported.

[0081] Furthermore, based on Figure 16 , Figure 17 , Figure 18 , Figure 20 , Figure 23 and Figure 24As shown, the feeding belt conveyor 622 is a belt conveyor with a mounting frame 649, a drive wheel shaft 650, a driven wheel shaft 651, and a conveyor belt 652 wound around the outside of the drive wheel shaft 650 and the driven wheel shaft 651. The drive wheel shaft 650 and the driven wheel shaft 651 are both rotatably mounted on the mounting frame 649. The drive wheel shaft 650 is located on one side of the feeding end of the feeding belt conveyor 622, and the driven wheel shaft 651 is located on one side of the discharging end of the feeding belt conveyor 622. The side of the mounting frame 649 near the feeding end of the feeding belt conveyor 622 is fixedly connected to the horizontal moving frame 621. The support wheel 648 is mounted on the side of the mounting frame 649 near the discharging end of the feeding belt conveyor 622.

[0082] The loading belt conveyor 622 is driven by a drive motor 639. Specifically, the loading belt conveyor 622 has an overrunning clutch 653. In each layer of the loading belt conveyor 622, a drive sprocket 654 is rotatably mounted on one end of the drive shaft 650 via a bearing and the overrunning clutch 653. In this embodiment, an end cover 671 and a bearing 670 are also provided. The end of the drive shaft 650 has a step 672, and the end of the drive sprocket 654 has an end face 673. The overrunning clutch 653 is a CKA-type one-way wedge overrunning clutch, with keyways on both its inner and outer rings. The bearing 670 is sleeved on the end of the drive shaft 650, with its inner ring abutting against the step 672, and its outer ring abutting against the end face 673 and having an interference fit with the inner wall of the drive sprocket 654. An overrunning clutch 653 is fitted onto the end of the drive shaft 650, with its inner ring abutting against the inner ring end of the bearing 670 away from the step 672. The inner ring of the overrunning clutch 653 is keyed to the drive shaft 650, and the outer ring of the overrunning clutch 653 is keyed to the inner wall of the drive sprocket 654. An end cover 671 is bolted to the end of the drive sprocket 654 away from the end face 673, and the end cover 671 abuts against the outer ring of the overrunning clutch 653. The output end of the drive motor 639 has an output shaft 655, on which a drive sprocket 656 is fixedly mounted. The horizontal moving frame 621 is provided with a driven sprocket 657 located at the bottom of all the loading belt conveyors 622. A drive chain 658 is fitted in a closed loop around the outer sides of the drive sprocket 656 and the driven sprocket 657. Of course, to ensure the direction and tension of the drive chain 658, a tensioning pulley 669 is also installed on the horizontal moving frame 621, and the drive chain 658 synchronously winds around the tensioning pulley 669. The drive chain 658 vertically passes through all the loading belt conveyors 622 and meshes with the drive sprockets 654 on all the loading belt conveyors 622. The drive motor 639 drives the output shaft 655 to rotate, which in turn drives the drive chain 658 through the drive sprocket 656. The drive chain 658 drives the drive sprockets 654 on all the loading belt conveyors 622 to rotate, thereby driving all the loading belt conveyors 622 to move. The overrunning clutch 653 ensures that the drive sprocket 654 can only drive the drive shaft 650 to rotate in one direction, while when rotating in the opposite direction, the drive sprocket 654 idles on the drive shaft 650. Specifically, in this embodiment, the drive sprocket 654 can only drive the drive wheel shaft 650 to rotate clockwise. Figure 16 and Figure 24 (as shown in the direction), so that the belt conveyor 622 for loading can only transport plywood 100 in the direction of the hot pressing device 61.

[0083] With the above configuration, drive motor 639 can synchronously drive the horizontal movement of the horizontal moving frame 621 and the movement of the loading belt conveyor 622. Specifically, in use, when all layers of the loading belt conveyor 622 are carrying plywood 100, drive motor 639 drives the horizontal moving frame 621 towards the hot pressing device 61, causing the loading belt conveyor 622 to insert into the gap of the unit hot pressing plate 611. During this process, although drive motor 639 synchronously drives drive sprocket 654 to rotate via drive chain 658, drive sprocket 654 idles on drive shaft 650, preventing the conveyor belt 652 from moving and keeping the plywood 100 stationary on the loading belt conveyor 622. When the loading belt conveyor 622 is fully inserted into the gap of the unit hot pressing plate 611, drive motor 639 rotates in the opposite direction, causing the horizontal moving frame 621 to move in the negative X-axis direction. At the same time, the drive motor 639 synchronously drives the drive sprocket 654 to rotate in the opposite direction through the drive chain 658. The drive sprocket 654 drives the drive wheel shaft 650 to rotate, so that the conveyor belt 652 conveys the plywood 100 towards the discharge end, and the plywood 100 can fall on the corresponding unit hot press plate 611 in place.

[0084] The output shaft 655 is also fixedly mounted with a second drive sprocket 659. Figure 24 In the middle, the second drive sprocket 659 is shielded behind the first drive sprocket 656, and the second driven sprocket 660 is fixedly installed on the outer side of the horizontal drive shaft 640. The second drive chain 661 is sleeved in a closed loop on the outer side of the second drive sprocket 659 and the second driven sprocket 660 to realize the transmission connection between the first drive motor 639 and the horizontal drive shaft 640.

[0085] Furthermore, based on Figure 14 , Figure 25 , Figure 26 and Figure 27As shown, the loading belt conveyor 622 also has an overrunning clutch 662. In each layer of the loading belt conveyor 622, the side of the drive shaft 650 away from the drive sprocket 654 is equipped with a drive gear 663 via a bearing and the overrunning clutch 662. Specifically, in this embodiment, an end cover 675 and a bearing 674 are also provided. The end of the drive shaft 650 has a step 676, and the end of the drive gear 663 has an end face 677. The overrunning clutch 662 is a CKA-type one-way wedge overrunning clutch, and both its inner and outer rings have keyways. The bearing 674 is sleeved on the end of the drive shaft 650, with its inner ring abutting against the step 676, and its outer ring abutting against the end face 677 and having an interference fit with the inner wall of the drive gear 663. An overrunning clutch 662 is fitted onto the end of the drive shaft 650, with its inner ring abutting against the inner ring end of the bearing 674 away from the step 676. The inner ring of the overrunning clutch 662 is keyed to the drive shaft 650, and the outer ring of the overrunning clutch 662 is keyed to the inner wall of the drive gear 663. An end cover 675 is bolted to the end of the drive gear 663 away from the end face 677, and the end cover 675 abuts against the outer ring of the overrunning clutch 662. A swing engagement mechanism 711 is located on the discharge end side of the wide belt conveyor 71, and the swing engagement mechanism 711 is positioned opposite to the drive gear 663. The wide belt conveyor 71 includes a mounting frame 712, a drive motor 713, a drive wheel shaft 714, a driven wheel shaft 715, and a conveyor belt 716 wound around the outside of the drive wheel shaft 714 and the driven wheel shaft 715. The drive wheel shaft 714 is located at the discharge end of the wide belt conveyor 71 and faces the automatic loading device 62. The drive motor 713 is connected to the drive wheel shaft 714 via a chain drive. The drive motor 713 drives the drive wheel shaft 714 to rotate, thereby moving the conveyor belt 716 to transport the plywood 100. The oscillating engagement mechanism 711 includes an oscillating cylinder 717, an oscillating frame 718, an oscillating gear 719, and a fixed gear 720. The oscillating frame 718 is rotatably sleeved on the outside of the end of the drive wheel shaft 714 via bearings, specifically located at the end of the drive wheel shaft 714 facing the negative Y-axis direction. The base of the swing cylinder 717 is hinged to the mounting bracket 712, and the output end of the swing cylinder 717 is hinged to the swing frame 718. A mounting shaft 721 is fixedly connected to the swing frame 718. The swing gear 719 is rotatably mounted on the mounting shaft 721 via bearings. A fixed gear 720 is fixedly sleeved on the outside of the drive wheel shaft 714, and the swing gear 719 meshes with the fixed gear 720. The swing cylinder 717 drives the swing frame 718 to rotate along the drive wheel shaft 714, causing the swing gear 719 to mesh with or disengage from the drive gear 663 in the corresponding layer's material-loading belt conveyor 622. Both the drive motor 713 and the swing cylinder 717 are controlled by a control device.

[0086] The overrunning clutch 662 ensures that the drive gear 663 can only drive the drive shaft 650 to rotate in one direction, while it idles in the opposite direction. Specifically, in this embodiment, the drive gear 663 can only drive the drive shaft 650 to rotate clockwise, so that the conveyor belt 652 can transport the plywood 100 towards the hot pressing device 61. In actual use, when the feed end of a certain layer of the loading belt conveyor 622 is aligned with the discharge end of the wide belt conveyor 71, the control device extends the output end of the swing cylinder 717 to rotate the swing frame 718, and the swing gear 719 on the swing frame 718 meshes with the drive gear 663 in the corresponding layer of the loading belt conveyor 622. At this time, the power from the second drive motor 713 drives the first drive shaft 650 to rotate clockwise through the second drive shaft 714, the fixed gear 720, the swing gear 719 and the drive gear 663. At this time, the second conveyor belt 716 on the wide belt conveyor 71 moves synchronously and in the same direction with the first conveyor belt 652 on the corresponding loading belt conveyor 622, transporting the plywood 100 from the wide belt conveyor 71 to the loading belt conveyor 622. Meanwhile, due to the overrunning clutch 653, although the drive shaft 650 is rotating, the drive sprocket 654 can idle on the drive shaft 650, so that the drive sprocket 654 will not rotate during this process, and the power will not be transmitted to the drive chain 658. This means that the drive motor 713 can only drive the corresponding layer of the loading belt conveyor 622 to move through the oscillating engagement mechanism 711, and the other loading belt conveyors 622 will not move, so as not to affect the loading belt conveyor 622 that is already loaded with plywood 100 on top to bear the load of plywood 100.

[0087] Furthermore, based on Figure 13 and Figure 28 As shown, a fall prevention mechanism 664 is provided on top of the lifting frame 623 in the frame 6. The fall prevention mechanism 664 includes a rotating cylinder 665 and a rotating hook 666. The rotating hook 666 is rotatably mounted on the top of the frame 6 via a bearing. The base of the rotating cylinder 665 is hinged to the frame 6, and the output end of the rotating cylinder 665 is hinged to the rotating hook 666. A hook part 667 is provided on the top of the lifting frame 623. The rotating cylinder 665 is controlled by a control device. When the lifting frame 623 rises to the gap between the corresponding unit hot press plates 611 aligned with the loading belt conveyor 622, i.e., the upper limit position, the rotating cylinder 665 drives the rotating hook 666 to hook the bottom side of the hook part 667 to prevent the lifting frame 623 from falling due to malfunction. Once all the plywood 100 has been transferred to the hot pressing device 61 via the horizontal moving frame 621 and the horizontal moving frame 621 has returned to its position, the rotating cylinder 665 drives the rotating hook 666 to disengage from the bottom side of the hook part 667, and the lifting frame 623 can then descend normally.

[0088] Furthermore, based on Figure 12 , Figure 29 , Figure 30 and Figure 31 As shown, the board discharge and storage device 68 has several layers of unit trays 681, with the feeding ends of the several layers of unit trays 681 aligned layer by layer with the discharging ends of the several layers of unit hot press plates 611. In each layer of the loading belt conveyor 622, the end of the mounting frame 649 facing the hot press device 61 is fixedly connected to a pushing member 668. After the plywood 100 is hot-pressed in the hot press device 61, the driving device drives the horizontal moving frame 621 to slide along the frame 6, so that the loading belt conveyor 622 is inserted into the gap between the corresponding two layers of unit hot press plates 611. The pushing member 668 pushes the plywood 100 on the unit hot press plate 611 and moves the plywood 100 onto the unit tray 681. In this way, the transfer of the plywood 100 from the hot press device 61 to the board discharge and storage device 68 can be realized without setting up an additional automatic moving device for board clamping, further simplifying the structure of the device.

[0089] The board unloading and storage device 68 also includes a second lifting frame 682 and a second vertical cylinder 683. The second lifting frame 682 is vertically slidably mounted on the frame 6 via the second vertical cylinder 683, and the unit support plate 681 is mounted on the second lifting frame 682. Each unit support plate 681 includes a left support plate 684 and a right support plate 685 located on the front and rear sides of the second lifting frame 682, with the left support plate 684 and the right support plate 685 spaced apart from each other. In this way, when the plywood 100 after hot pressing enters the board unloading and storage device 68, its two sides along the Y-axis direction overlap the left support plate 684 and the right support plate 685 respectively, with no support at the bottom of the middle part. A board discharge conveyor 73 is also provided at the bottom of the board discharge and storage device 68. The board discharge conveyor 73 is located at the bottom of the gap between the left support plate 684 and the right support plate 685. The discharge end of the board discharge conveyor 73 extends out of the board discharge and storage device 68 from the side of the board discharge and storage device 68 away from the hot pressing device 61. Both the vertical cylinder 683 and the board discharge conveyor 73 are controlled by a control device. In this embodiment, the board discharge conveyor 73 is also a belt conveyor. When the vertical cylinder 683 drives the lifting frame 682 to descend, the middle part of the plywood 100 contacts the conveyor belt on the board discharge conveyor 73 and is transferred to the discharge end by the board discharge conveyor 73. As the lifting frame 682 continues to descend, the plywood 100 on each unit pallet 681 contacts and is transferred layer by layer with the conveyor belt on the board delivery conveyor 73. Before the previous layer of plywood 100 contacts the conveyor belt, the next layer of plywood 100 has already been transported away by the board delivery conveyor 73. In this way, all layers of plywood 100 on the board delivery and storage device 68 can be transferred from bottom to top to the next workstation.

[0090] In this embodiment, based on Figure 29 and Figure 30As shown, the lifting frame 682 is a cubic frame with rectangular frames on both sides along the Y-axis. Each rectangular frame has a longitudinal beam 690, a longitudinal beam 691, a top beam 692, and a bottom beam 693. The two rectangular frames are connected by the top beam 698 at the top and the bottom beam 697 at the bottom to form a cubic frame structure. The left support plate 684 and the right support plate 685 are respectively mounted on the two rectangular frames along the height direction. The frame 6 has two longitudinal beams 694 on both sides of the lifting frame 682 along the Y-axis, and the tops of the two longitudinal beams 694 are fixedly connected by the top beam 696. There are two vertical cylinders 683, located on both sides of the lifting frame 682 along the Y-axis. The top of the vertical cylinder 683 is hinged to the longitudinal beam 694, and the bottom is hinged to the bottom beam 693. Meanwhile, each side of the rectangular frame of the lifting frame 2682 is also equipped with four lifting rollers 2695. The four lifting rollers 2695 are paired up and rolled and clamped on both sides of the corresponding longitudinal beam 8694, following the lifting frame 2682 to rise and fall, ensuring the stability of the lifting frame 2682.

[0091] Meanwhile, in this embodiment, based on Figure 32 As shown, in the hot pressing device 61, two sets of hot pressing positioning photoelectric switches 751 are arranged opposite each other between any two adjacent unit hot pressing plates 611. The two sets of hot pressing positioning photoelectric switches 751 are located on both sides of the width direction of the unit hot pressing plate 611, that is, the Y-axis direction. When the plywood 100 is placed on the unit hot pressing plate 611, the two edges of the plywood 100 along the Y-axis direction respectively block the path of the two sets of hot pressing positioning photoelectric switches 751, which is used to detect whether the plywood 100 is in position. Moreover, the two sets of hot pressing positioning photoelectric switches 751 on each unit hot pressing plate 611 detect the position of the edge of the plywood 100 along the Y-axis direction. If the path is not blocked, the plywood 100 may be tilted. Similarly, based on Figure 30 and Figure 33 As shown, two sets of photoelectric switches 752 are also installed between any two adjacent unit trays 681 to detect whether the plywood 100 has moved into place. The two sets of photoelectric switches 752 are located on the left tray 684 and the right tray 685, respectively. After the plywood 100 is placed on the unit tray 681, the two sets of photoelectric switches 752 detect the edge position of the plywood 100 along the Y-axis. If there is no obstruction in the passage, the plywood 100 may be tilted.

[0092] In addition, in this embodiment, please refer to Figure 34 . Figure 34The left side of the dashed line shows the sensor triggering status diagram when the lifting frame 2 682 descends to the lower limit position, and the right side of the dashed line shows the sensor triggering status diagram when the lifting frame 2 682 rises to the upper limit position. At the board storage device 68, the frame 6 has two upper limit deceleration travel switches, 753 and 754, located near the upper limit of the lifting frame 2 682, with the upper limit deceleration travel switch 753 located above it. The frame 6 also has two lower limit deceleration travel switches, 755 and 756, located near the lower limit of the lifting frame 2 682, with the lower limit travel switch 756 located below it. The lifting frame 2 682 has a trigger block 4 762 at the top and a trigger block 5 763 at the bottom. Meanwhile, each unit tray 681 is equipped with a second deceleration proximity switch 757 and a second positioning proximity switch 758 for each layer of the lifting frame. Both the second deceleration proximity switch 757 and the second positioning proximity switch 758 are positioned facing the gap between the left tray 684 and the right tray 685 in the corresponding unit tray 681. The second deceleration proximity switch 757 and the second positioning proximity switch 758 can be installed on either the left tray 684 or the right tray 685.

[0093] In the initial state, the lifting frame 682 is at its upper limit position, and the feeding end of each unit pallet 681 is aligned with the discharge end of the corresponding unit hot press plate 611. At this time, plywood 100 can be conveyed from the hot press device 61 to the plate storage device 68. After all unit pallets 681 are loaded with plywood 100, the retraction photoelectric switch 752 sends a signal to the control device that the plywood 100 has arrived, and the control device controls the vertical cylinder 683 to drive the lifting frame 682 to descend. During the descent, the passage of the lifting frame deceleration proximity switch 757 on the bottom unit pallet 681 is first blocked by the plate delivery conveyor 73. At this time, the lifting frame deceleration proximity switch 757 sends a signal to the control device, which then controls the vertical cylinder 683 to drive the lifting frame 682 to decelerate and descend. Subsequently, the lifting frame positioning proximity switch 758 on the bottom unit pallet 681 aligns with the plate delivery conveyor 73, and sends a signal to the control device. The control device then controls the vertical cylinder 683 to stop driving the lifting frame 682 to descend. At this point, the upper surface of the bottom unit pallet 681 is slightly lower than the conveying surface of the plate delivery conveyor 73, and the plywood 100 is cleared by the vertical plate conveyor frame 6. The plate delivery conveyor 73 can then transport the plywood 100 of this layer to the next station. The plate delivery conveyor 73 is also equipped with a photoelectric switch (not shown in the attached diagram). After the plywood 100 moves away, the photoelectric switch sends a signal to the control device. The control device then uses the vertical cylinder 683 to lower the lifting frame 682, aligning the second-to-last unit tray 681 with the delivery conveyor 73. This process continues until all the plywood 100 on all the unit trays 681 have been transferred by the delivery conveyor 73. Simultaneously, as the top unit tray 681 descends and aligns with the delivery conveyor 73, the lifting frame 682 descends until the trigger block 763 contacts the contact of the lower limit deceleration switch 755, causing the contact to rotate. The lower limit deceleration switch 755 sends a signal to the control device, which then controls the vertical cylinder 683 to decelerate and descend the lifting frame 682. Subsequently, trigger block 763 contacts the contact of the lower limit travel switch 756 of the lifting frame and causes the contact to rotate. The lower limit travel switch 756 of the lifting frame sends a signal to the control device, which controls the vertical cylinder 683 to stop driving the lifting frame 682 to descend. The lifting frame 682 moves to the lower limit position, and the top unit tray 681 aligns with the discharge conveyor 73. After the plywood 100 on the top unit tray 681 is transferred by the discharge conveyor 73, the control device controls the lifting frame 682 to rise.When the lifting frame 2 682 rises to the point where the trigger block 4 762 contacts the contact of the lifting frame upper limit deceleration travel switch 2 753 and causes the contact to rotate, the lifting frame upper limit deceleration travel switch 2 753 sends a signal to the control device. The control device controls the vertical cylinder 2 683 to drive the lifting frame 2 682 to decelerate and rise. Then, when the lifting frame 2 682 rises to the point where the trigger block 4 762 contacts the contact of the lifting frame upper limit travel switch 2 754 and causes the contact to rotate, the lifting frame upper limit travel switch 2 754 sends a signal to the control device. The control device controls the vertical cylinder 2 683 to stop driving the lifting frame 2 682 to rise. The lifting frame 2 682 rises to the lower limit position and returns to the alignment of the feeding end of each unit pallet 681 with the discharge end of the corresponding unit hot press plate 611, returning to the above initial state, and starting the next cycle.

[0094] Furthermore, based on Figure 11 As shown, the infeed end of the chain conveyor 12 is also equipped with a negative pressure feeding device 8, and the discharge end of the plate conveyor is also equipped with a stacker crane 9. The stacker crane 9 can be an existing stacker crane 9 used for stacking plates, and it is controlled by a control device. Based on Figure 36As shown, the negative pressure feeding device 8 includes a mounting frame 801, a feeding conveyor 802, a lifting platform 803, a lifting conveyor 804, a negative pressure fan 806, and a fan cylinder 807. The lifting conveyor 804 is mounted on top of the lifting platform 803. The discharge end of the feeding conveyor 802 is opposite to the feed end of the lifting conveyor 804, and the discharge end of the lifting conveyor 804 is opposite to the feed end of the chain conveyor 12. A track 805 is located on top of the mounting frame 801 and on top of the lifting conveyor 804, extending along the X-axis. The negative pressure fan 806 is slidably mounted on the track 805. The fan cylinder 807 is horizontally arranged, with its base hinged to the top of the mounting frame 801 and its output end hinged to the negative pressure fan 806. Meanwhile, a vertical three-axis cylinder 808 is installed at the top of the feed end of the chain conveyor 12, and a pressure roller 809 is installed at the bottom output end of the vertical three-axis cylinder 808. The feeding conveyor 802, the lifting platform 803, the lifting conveyor 804, the negative pressure fan 806, the fan cylinder 807, and the vertical three-axis cylinder 808 are all controlled by a control device. The feeding conveyor 802 is used to place plywood stacks. When the lifting platform 803 descends to its lowest point, the discharge end of the feeding conveyor 802 aligns with the feed end of the lifting conveyor 804. The feeding conveyor 802 and the lifting conveyor 804 cooperate to transfer the plywood stacks onto the lifting conveyor 804. The negative pressure fan 806 adsorbs the top layer of plywood 100 using negative pressure adsorption. Then, the fan cylinder 807 retracts, moving the negative pressure fan 806 towards the chain conveyor 12, causing the edge of the plywood 100 in the positive X-axis direction to move onto the chain conveyor 12. Subsequently, the vertical three-axis cylinder 808 drives the pressing roller 809 to descend, pressing the plywood 100 tightly against the top conveying surface of the chain conveyor 12. The plywood 100 then moves to the next station under the drive of the chain conveyor 12. After the top layer of plywood 100 has been removed, the fan cylinder 807 extends, causing the negative pressure fan 806 to reset. The lifting platform 803 rises by the thickness of one plywood 100, bringing the next piece of plywood 100 closer to the negative pressure fan 806, which then adsorbs it, and so on. In actual use, a horizontal photoelectric switch 810 is installed on the mounting frame 801. The horizontal photoelectric switch 810 is always aligned with the side of the top layer of plywood 100. When a piece of plywood 100 is moved away, the lifting platform 803 rises, aligning the bottom layer of plywood 100 with the path of the horizontal photoelectric switch 810. The horizontal photoelectric switch 810 sends a signal to the control device, indicating that the next layer of plywood 100 has risen into place, and the lifting platform 803 stops rising.

[0095] Furthermore, based on Figure 29 and Figure 35As shown, the frame 6 is equipped with a fall prevention mechanism 686 at the top of the lifting frame 682. The fall prevention mechanism 686 includes a rotating cylinder 687 and a rotating hook 688. The rotating hook 688 is rotatably mounted on the top of the frame 6 via a bearing. The base of the rotating cylinder 687 is hinged to the frame 6, and the output end of the rotating cylinder 687 is hinged to the rotating hook 688. The top of the lifting frame 682 is equipped with a hook part 689. The rotating cylinder 687 is controlled by a control device. When the lifting frame 682 rises to the upper limit position when the unit support plate 681 is aligned with the corresponding unit hot press plate 611, the rotating cylinder 687 drives the rotating hook 688 to hook the bottom side of the hook part 689, thus preventing the lifting frame 682 from falling. After all the plywood 100 is transferred from the hot press device 61 to the unit tray 681, the rotating cylinder 687 drives the rotating hook 688 to disengage from the bottom side of the hook part 689, and the lifting frame 682 can then descend normally.

Claims

1. A plywood double-sided continuous lamination device, characterized in that: The system includes a feeding belt conveyor, a laminating belt conveyor, a board output belt conveyor, a laminating machine, a hot-press cutting device, and a control device. The output end of the feeding belt conveyor is opposite to the input end of the laminating belt conveyor, the output end of the laminating belt conveyor is opposite to the input end of the hot-press cutting device, and the output end of the hot-press cutting device is opposite to the input end of the board output belt conveyor. The feeding belt conveyor, the laminating belt conveyor, the board output belt conveyor, and the hot-press cutting device are all controlled by the control device. The laminating belt conveyor includes a support frame, a drive roller, a driven roller, and a conveyor belt. The drive roller and the driven roller are both rotatably mounted on the support frame. The conveyor belt is wound around the drive roller and the driven roller. The drive roller is located at the feed end of the laminating belt conveyor, and the driven roller is located at the discharge end of the laminating belt conveyor. The conveyor belt is used for continuously conveying plywood. The laminating machine has a support frame with an upper film roll and a lower film roll mounted on the upper rolling frame. The upper film roll is located at the top of the laminating belt conveyor, and the lower film roll is located at the bottom of the laminating belt conveyor. A tension roller is mounted on the upper rolling frame of the support frame, and the tension roller is arranged side by side on top of the drive roller. The film of the upper film roll is wrapped around the tension roller and attached to the upper surface of the plywood. The film of the upper film roll extends to the hot-press cutting device and is hot-pressed and adhered to the upper surface of the plywood. The film of the lower film roll is wrapped around the drive roller and held between the upper surface of the conveyor belt and the lower surface of the plywood. The film of the lower film roll extends to the hot-press cutting device and is hot-pressed and adhered to the lower surface of the plywood.

2. The plywood double-sided continuous coating device as described in claim 1, characterized in that: The support frame is also equipped with a vertical three-axis cylinder, a horizontal three-axis cylinder, and a horizontal three-axis cylinder; the vertical three-axis cylinder, the horizontal three-axis cylinder, and the horizontal three-axis cylinder are all controlled by the control device. The vertical three-axis cylinder is located at the top of the active roller, and the tensioning roller is installed at the bottom output end of the vertical three-axis cylinder. The output end of the vertical three-axis cylinder extends to press the tensioning roller against the surface of the plywood. The horizontal three-axis cylinder is located on the side of the tension roller facing the feed end of the belt conveyor for film coating. The output end of the horizontal three-axis cylinder is equipped with a pressure roller. The output end of the horizontal three-axis cylinder extends to press the pressure roller against the tension roller. The second horizontal three-axis cylinder is located on the side of the drive roller facing the feed end of the belt conveyor for film coating. The output end of the second horizontal three-axis cylinder is equipped with a second pressure roller. The output end of the second horizontal three-axis cylinder extends to press the second pressure roller against the drive roller.

3. The plywood double-sided continuous coating device as described in claim 1 or 2, characterized in that: The laminating machine also includes a ground guide rail, an upper mandrel, and a lower mandrel. The ground guide rail is located at the bottom of the laminating belt conveyor and extends along the width direction of the laminating belt conveyor. The support frame includes a base that is slidably disposed on the ground guide rail. A vertical mounting post is provided on one side of the base. An upper clamping assembly and a lower clamping assembly are provided along the height direction of the vertical mounting post. The upper clamping assembly includes an upper bottom arc plate and an upper top arc plate that is bolted to the top of the upper bottom arc plate. The upper bottom arc plate is fixedly connected to the vertical mounting post. The lower clamping assembly includes a lower bottom arc plate and a lower top arc plate that is bolted to the top of the lower bottom arc plate. The lower bottom arc plate is fixedly connected to the vertical mounting post. On the other side of the base, there is a support column one. Two lower support bearings opposite to the lower clamping assembly are installed side by side on the top of the support column one. On the top of the support frame one, there is a support column two. Two upper support bearings opposite to the upper clamping assembly are installed side by side on the top of the support column two. One end of the upper mandrel is clamped between the upper top arc plate and the upper bottom arc plate, and the other end of the upper mandrel is rolled and supported by two upper support bearings. One end of the lower mandrel is clamped between the lower top arc plate and the lower bottom arc plate, and the other end of the lower mandrel is rolled and supported by two lower support bearings. The upper film roll is sleeved on the outside of the upper mandrel, and the lower film roll is sleeved on the outside of the lower mandrel.

4. The plywood double-sided continuous coating device as described in claim 2, characterized in that: The hot-press cutting device includes a second support frame, on which two sets of upper hot-press mechanisms, two sets of lower hot-press mechanisms, an upper cutting mechanism, and a lower cutting mechanism are mounted. The film-coating belt conveyor has a conveying surface. The two sets of upper hot-press mechanisms and the two sets of lower hot-press mechanisms are symmetrically arranged on the upper and lower sides of the plane on which the conveying surface is located. The upper cutting mechanism and the lower cutting mechanism are symmetrically arranged on the upper and lower sides of the plane on which the conveying surface is located, with the upper cutting mechanism located between the two sets of upper hot-press mechanisms and the lower cutting mechanism located between the two sets of lower hot-press mechanisms. The upper hot pressing mechanism includes a vertical three-axis cylinder 2, a heat-conducting plate 1, and several soldering irons 1. The vertical three-axis cylinder 2 is fixedly installed on the support frame 2 and its output end is located at the bottom. The heat-conducting plate 1 is fixedly installed at the bottom of the output end of the vertical three-axis cylinder 2 and extends along the conveying direction perpendicular to the belt conveyor for laminating. The several soldering irons 1 are arranged at intervals along the conveying direction perpendicular to the belt conveyor for laminating. The several soldering irons 1 are fixedly installed on the top of the heat-conducting plate 1 and their heating ends abut against the top of the heat-conducting plate 1. The hot-press cutting mechanism includes a vertical three-axis cylinder three, a heat-conducting plate two, and several soldering irons two. The vertical three-axis cylinder three is fixedly mounted on the support frame two with its output end located at the top. The heat-conducting plate two is fixedly mounted on the top of the output end of the vertical three-axis cylinder three and extends along the conveying direction perpendicular to the conveying direction of the laminating belt conveyor. The several soldering irons two are arranged at intervals along the conveying direction perpendicular to the conveying direction of the laminating belt conveyor. The several soldering irons two are fixedly mounted on the bottom of the heat-conducting plate two with their heating ends abutting against the bottom of the heat-conducting plate two.

5. The plywood double-sided continuous coating device as described in claim 4, characterized in that: The upper cutting mechanism includes a top guide rail, an upper horizontal conveying mechanism, an upper mounting frame, and two upper wallpaper blades. The top guide rail is installed on the top of the second support frame, and the top of the upper mounting frame is slidably installed on the top guide rail. The two upper wallpaper blades are fixedly installed at the bottom of the upper mounting frame and located in the film-coating conveying path of the upper film roll. The two upper wallpaper blades are located on the same plane and their blades are arranged opposite each other along the width direction of the film-coating belt conveyor. The upper horizontal conveying mechanism includes an upper drive shaft, an upper driven shaft, and an upper horizontal moving belt located on both sides of the width direction of the second support frame. The upper mounting frame is fixedly connected to the upper horizontal moving belt. The lower cutting mechanism includes a bottom guide rail, a lower horizontal conveying mechanism, a lower mounting frame, and two lower wallpaper blades. The bottom guide rail is installed at the bottom of the second support frame, and the bottom of the lower mounting frame is slidably installed on the bottom guide rail. The two lower wallpaper blades are fixedly installed on the top of the lower mounting frame and located on the film-coating conveying path of the lower film roll. The two lower wallpaper blades are located on the same plane and their blades are arranged opposite to each other along the width direction of the film-coating belt conveyor. The lower horizontal conveying mechanism includes a lower drive shaft, a lower driven shaft, and a lower horizontal moving belt located on both sides of the width direction of the second support frame, and a lower horizontal moving belt wrapped around the lower drive shaft and the lower driven shaft. The lower mounting frame is fixedly connected to the lower horizontal moving belt. It also includes synchronous belt one, synchronous belt two, and synchronous belt three. The support frame two is equipped with a geared motor and a synchronous shaft. The synchronous shaft is rotatably mounted on the support frame two via bearings. The output end of the geared motor has a synchronous sprocket one. The synchronous shaft is fixedly fitted with three synchronous sprockets two. The upper drive shaft is fixedly fitted with a synchronous sprocket three. The lower drive shaft is fixedly fitted with a synchronous sprocket four. Synchronous belt one is wound around synchronous sprocket one and the first synchronous sprocket two. Synchronous belt two is wound around synchronous sprocket three and the second synchronous sprocket two. Synchronous belt three is wound around synchronous sprocket four and the third synchronous sprocket two. The geared motor is controlled by the control device.

6. A coating production line, characterized in that: The device includes a frame, an automatic loading device, a hot pressing device, a board output and storage device, a wide belt conveyor, a board output conveyor, and a plywood double-sided continuous laminating device as described in any one of claims 1-5. The automatic loading device, the hot pressing device, and the board output and storage device are all installed on the frame. The board output belt conveyor, the wide belt conveyor, the automatic loading device, the hot pressing device, the board output and storage device, and the board output conveyor are arranged sequentially. Several layers of unit hot press plates are arranged at intervals along the height direction of the hot press device. The automatic loading device has a horizontal moving frame, a drive device, a lifting frame, and a vertical cylinder. The lifting frame is vertically slidably mounted on the frame via the vertical cylinder. The horizontal moving frame is horizontally slidably mounted on the lifting frame via the drive device. Several layers of loading belt conveyors for carrying plywood are arranged at intervals along the height direction of the horizontal moving frame. The discharge ends of the several layers of loading belt conveyors are aligned with the gaps between adjacent unit hot press plates. The drive device, the several layers of loading belt conveyors, the vertical cylinder, the hot press device, the plate discharge and storage device, the wide belt conveyor, and the plate discharge conveyor are all controlled by the control device. In use, the drive unit drives the horizontal moving frame to slide along the lifting frame, causing the loading belt conveyor carrying plywood to insert into the gap between the corresponding two layers of the unit hot press plates; subsequently, the drive unit drives the horizontal moving frame to slide in the opposite direction along the lifting frame, causing the loading belt conveyor to move out of the gap between the unit hot press plates; at the same time as the loading belt conveyor moves out of the gap between the unit hot press plates, the loading belt conveyor moves the plywood towards its discharge end, and the speed at which the plywood is moved is the same as the speed at which the loading belt conveyor moves out of the gap between the corresponding two layers of the unit hot press plates, so that the plywood falls in place on the corresponding unit hot press plate.

7. The coating production line as described in claim 6, characterized in that: The lifting frame is equipped with a slide rail located at the bottom of the horizontal moving frame and racks located on the front and rear sides of the horizontal moving frame. The slide rail and the racks extend along the arrangement direction of the automatic loading device and the hot pressing device. The bottom of the horizontal moving frame is provided with a support roller that rolls and supports the top of the slide rail. The driving device includes a drive motor fixedly installed on the top of the horizontal moving frame, the drive motor being controlled by the control device. A horizontal drive shaft is rotatably mounted on the top of the horizontal moving frame, extending along the conveying direction perpendicular to the conveying direction of the loading belt conveyor. Vertical drive shafts are mounted on both the front and rear sides of the horizontal moving frame via bearings. The drive motor is connected to the horizontal drive shaft. Both ends of the horizontal drive shaft are fixedly mounted with bevel gears. The top ends of the two vertical drive shafts are fixedly mounted with bevel gears, and the bottom ends of the two vertical drive shafts are fixedly mounted with transmission gears. The bevel gears at the top ends of the two vertical drive shafts mesh with the two bevel gears, and the transmission gears at the bottom ends of the two vertical drive shafts mesh with the two racks. The horizontal moving frame, the first drive motor, the horizontal drive shaft, and the vertical drive shaft are all located on the feeding end side of the feeding belt conveyor. The lifting frame has several layers of support platforms arranged vertically on the side facing the hot pressing device. The several layers of support platforms correspond to the several layers of the feeding belt conveyor layer by layer, and the several layers of support platforms are aligned with the feeding ends of the several layers of the unit hot pressing plates layer by layer. Each layer of the feeding belt conveyor has a support wheel that rolls and supports the corresponding support platform at its bottom near the discharge end.

8. The coating production line as described in claim 7, characterized in that: The feeding belt conveyor has a mounting frame, a drive wheel axle, a driven wheel axle, and a conveyor belt wound around the outside of the drive wheel axle and the driven wheel axle. The drive wheel axle and the driven wheel axle are both rotatably mounted on the mounting frame. The drive wheel axle is located on one side of the feeding end of the feeding belt conveyor, and the driven wheel axle is located on one side of the discharging end of the feeding belt conveyor. The side of the mounting frame near the feeding end of the feeding belt conveyor is fixedly connected to the horizontal moving frame. The support wheel is mounted on the side of the mounting frame near the discharging end of the feeding belt conveyor. The loading belt conveyor has an overrunning clutch; in each layer of the loading belt conveyor, one end of the drive wheel shaft is rotatably mounted with a drive sprocket via a bearing and the overrunning clutch; the output end of the drive motor has an output shaft, and the output shaft is fixedly mounted with the drive sprocket; the horizontal moving frame is provided with a driven sprocket located at the bottom of all the loading belt conveyors; a drive chain is closedly sleeved on the outer side of the drive sprocket and the driven sprocket; the drive chain vertically passes through all the loading belt conveyors and meshes with the drive sprockets on all the loading belt conveyors; the output shaft is also fixedly mounted with a second drive sprocket; a second driven sprocket is fixedly mounted on the outer side of the horizontal drive shaft; a second drive chain is closedly sleeved on the outer side of the drive sprocket and the driven sprocket. The loading belt conveyor also has an overrunning clutch II. In each layer of the loading belt conveyor, the side of the drive wheel shaft away from the drive sprocket is equipped with a drive gear through the bearing and the overrunning clutch II. The wide belt conveyor has a swing engagement mechanism on the discharge end side, and the swing engagement mechanism is arranged opposite to the drive gear. The wide belt conveyor has a second mounting frame, a second drive motor, a second drive wheel shaft, a second driven wheel shaft, and a second conveyor belt wound around the outside of the second drive wheel shaft and the second driven wheel shaft. The second drive wheel shaft is located at the discharge end of the wide belt conveyor and is arranged towards the automatic loading device. The second drive motor and the second drive wheel shaft are connected by chain drive. The oscillating engagement mechanism includes an oscillating cylinder, an oscillating frame, an oscillating gear, and a fixed gear. The oscillating frame is rotatably mounted on the outer side of the end of the second drive wheel shaft via bearings. The base of the oscillating cylinder is hinged to the second mounting frame, and the output end of the oscillating cylinder is hinged to the second oscillating frame. A mounting shaft is fixedly connected to the second oscillating frame. The oscillating gear is rotatably mounted on the mounting shaft via bearings. The fixed gear is fixedly mounted on the outer side of the second drive wheel shaft, and the oscillating gear meshes with the fixed gear. The oscillating cylinder drives the oscillating frame to rotate along the second drive wheel shaft, causing the oscillating gear to mesh with or disengage from the drive gear in the corresponding layer of the loading belt conveyor. Both the second drive motor and the oscillating cylinder are controlled by the control device.

9. The coating production line as described in claim 8, characterized in that: The plate feeding and storage device has several layers of unit trays, and the feeding ends of the several layers of unit trays are aligned with the discharging ends of the several layers of unit hot press plates layer by layer; in each layer of the loading belt conveyor, a pushing member is fixedly connected to one end of the mounting frame facing the hot press device; after the plywood is hot-pressed in the hot press device, the driving device drives the horizontal moving frame to slide along the frame, so that the loading belt conveyor is inserted into the gap between the corresponding two layers of unit hot press plates, and the pushing member pushes the plywood on the unit hot press plate and moves the plywood to the unit tray; The plate feeding and storage device further includes a second lifting frame and a second vertical cylinder. The second lifting frame is vertically slidably mounted on the frame via the second vertical cylinder. The unit support plate is mounted on the second lifting frame. Each layer of the unit support plate includes a left support plate and a right support plate disposed on the front and rear sides of the second lifting frame. The left support plate and the right support plate are spaced apart from each other. The plate feeding conveyor is located at the bottom of the gap between the left support plate and the right support plate. The discharge end of the plate feeding conveyor extends from the side of the plate feeding and storage device away from the hot pressing device. The second vertical cylinder is controlled by the control device.

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