A plywood pressing device

Abstract

This invention discloses a plywood pressing device, comprising a side pressure bracket, a steering pressure mechanism, and a transmission mechanism. The steering pressure mechanism includes a pair of side pressure components mounted on the side pressure bracket, a flat pressure plate mounted on one side of the pair of side pressure components, a synchronization component mounted between the pair of side pressure components, and a balancing component mounted on one side of the pair of side pressure components. The transmission mechanism includes a guide component mounted on the upper side of the pair of side pressure components and a pair of power components mounted on the lower side of the guide component. The side pressure components include: a side pressure threaded rod, a side pressure threaded block, and a side pressure support frame. Through the arrangement of the corresponding mechanisms, the plywood pressing device of this invention enables the side pressure to act synchronously and proportionally around the plywood blank with the main pressure stroke, effectively suppressing the lateral extrusion of adhesive and fibers, significantly improving the density and bonding strength of the plywood edges, reducing subsequent edge trimming losses, and exhibiting good adaptability to plywood of different thicknesses.

Description

Technical Field

[0001] This invention belongs to the field of pressing device technology, and specifically relates to a pressing device for plywood. Background Technology

[0002] The plywood pressing device is a key piece of equipment in plywood forming. It is mainly used to stack glued veneers into blanks and then apply uniform pressure to cure the glue layer, thereby bonding them into a strong whole board. The device usually includes a hot press body, a hydraulic system, a heating system, and a control system. The hydraulic system drives the press plates to move up and down, generating stable and controllable pressure, while the heating system provides a suitable temperature to accelerate glue curing. During pressing, multiple layers of veneers are precisely aligned and fed between the press plates. Under the set pressure and temperature, the adhesive penetrates into the pores of the wood, forming a strong bonding interface, and finally obtaining a flat, high-strength plywood.

[0003] The pressing device operates gradually. In the initial stage, the pressure plate closes slowly to expel excess air from the board and prevent bubbles or blistering. Then, the pressure is gradually increased to the required process value and maintained for a sufficient time to ensure that the adhesive layer is fully cross-linked and cured. During the pressing process, the device also needs to control the amount of adhesive overflow at the edge of the board to prevent uneven plywood thickness. Some advanced devices are equipped with thickness gauges or limiting mechanisms to precisely constrain the thickness of the finished product. After the pressure is released, the pressure plate opens, and the pressed board is cooled and shaped before entering the next process. The entire device coordinates pressure, temperature, and time parameters through an automatic control system to ensure the stability and consistency of product quality during continuous batch production.

[0004] In the hot pressing production of plywood, traditional pressing devices only apply vertical pressure along the thickness direction, causing the adhesive and fibers to be squeezed laterally towards the edge when the board is pressed. This results in loose edges, insufficient adhesive, and cracking of the board, leading to large losses during subsequent edge trimming. Furthermore, misalignment of the board assembly cannot be corrected during pressing. Existing side-pressure auxiliary solutions generally suffer from problems such as poor timing coordination between side pressure and main pressure, poor mechanical linkage, and insufficient adaptability to boards of different thicknesses, making it difficult to achieve synchronous and proportional application of side pressure with the main pressure stroke.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a plywood pressing device that can solve the problems of poor timing coordination between side pressure and main pressure, insufficient adaptability, and difficulty in applying them synchronously in the prior art.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution: A plywood pressing device includes: a side pressure bracket, a steering pressure mechanism, and a transmission mechanism. The steering pressure mechanism includes a pair of side pressure components disposed on the side pressure bracket, a flat pressure plate disposed on one side of the pair of side pressure components, a synchronization component disposed between the pair of side pressure components, and a balancing component disposed on one side of the pair of side pressure components; the transmission mechanism includes a guide component disposed on the upper side of the pair of side pressure components and a pair of power components disposed on the lower side of the guide component.

[0008] In one or more embodiments of the present invention, the side-pressure assembly includes: a side-pressure threaded rod, a side-pressure threaded block, and a side-pressure support frame. The side-pressure threaded rod is disposed on the upper side of the side-pressure support frame; the side-pressure threaded block is disposed on the side-pressure threaded rod; and the side-pressure support frame is disposed on the side-pressure threaded block.

[0009] In one or more embodiments of the present invention, a pair of side pressure support plates are provided between the side pressure threaded rod and the side pressure bracket, and the side pressure threaded rod passes through the side pressure support plate and the side pressure threaded block.

[0010] In one or more embodiments of the present invention, a side pressure bearing is provided between the side pressure threaded rod and the side pressure support plate, the side pressure threaded block is fixedly connected to the side pressure support frame, and a pair of the side pressure support frames are fixedly connected to the flat pressure plate.

[0011] In one or more embodiments of the present invention, the synchronization assembly includes: a secondary synchronization pulley, a primary synchronization pulley, and a synchronization belt. The secondary synchronization pulley is disposed at the end of the side-pressure threaded rod away from the flat pressure plate; the primary synchronization pulley is disposed on one side of the side-pressure bracket; and the synchronization belt is disposed between the primary synchronization pulley and a pair of secondary synchronization pulleys.

[0012] In one or more embodiments of the present invention, the secondary synchronous pulley is fixedly connected to the side-pressure threaded rod, the primary synchronous pulley is rotatably connected to the side-pressure bracket, and the synchronous belt is matched with the primary synchronous pulley and the secondary synchronous pulley.

[0013] In one or more embodiments of the present invention, the balancing assembly includes a balancing positioning rod and a balancing support rod. The balancing positioning rod is disposed between a pair of side-pressure threaded rods; the balancing support rod is disposed between the balancing positioning rod and the side-pressure bracket.

[0014] In one or more embodiments of the present invention, the balance positioning rod is fixedly connected to the flat pressure plate, the balance positioning rod passes through the balance support rod, and the balance support rod is fixedly connected to the side pressure bracket.

[0015] In one or more embodiments of the present invention, the guide assembly includes a guide mounting plate and a guide balance bar. The guide mounting plate is disposed on the upper side of the pair of side-pressure threaded rods; the guide balance bar is disposed on the lower side of the guide mounting plate and extends through the side-pressure bracket.

[0016] In one or more embodiments of the present invention, the power assembly includes: a power gear plate, a power gear, and a power latch. The power gear plate is disposed on the lower side of the guide mounting plate and is rotatably connected to the guide mounting plate; the power gear is disposed on the side-pressure threaded rod and matches the power gear plate; the power latch is disposed on the outer side of the power gear plate and is rotatably connected to the side-pressure bracket.

[0017] Compared with the prior art, the plywood pressing device of the present invention, through the setting of the corresponding mechanism, enables the lateral pressure to act synchronously and proportionally on the periphery of the board blank with the main pressing stroke, effectively suppressing the lateral extrusion of adhesive and fiber, significantly improving the density and bonding strength of the board edge, reducing subsequent edge cutting losses, and having good adaptability to boards of different thicknesses. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a plywood pressing device according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle; Figure 3 for Figure 1 Schematic diagram of the structure at point B; Figure 4 for Figure 1 Schematic diagram of the structure at point C; Figure 5 This is a partial three-dimensional sectional view of the plywood pressing device in one embodiment of the present invention; Figure 6 for Figure 5 Schematic diagram of the structure at point D; Figure 7 This is a partial three-dimensional view of the plywood pressing device in one embodiment of the present invention.

[0020] Explanation of key figure labels: 1-Side pressure bracket, 2-Steering pressure mechanism, 21-Side pressure assembly, 211-Side pressure threaded rod, 212-Side pressure threaded block, 213-Side pressure support frame, 214-Side pressure support plate, 215-Side pressure bearing, 22-Flat pressure plate, 23-Synchronization assembly, 231-Synchronization secondary wheel, 232-Synchronization main wheel, 233-Synchronization belt, 24-Balance assembly, 241-Balance positioning rod, 242-Balance support rod, 3-Transmission mechanism, 31-Guide assembly, 311-Guide mounting plate, 312-Guide balance rod, 32-Power assembly, 321-Power gear plate, 322-Power gear, 323-Power buckle. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0022] like Figures 1 to 7 As shown, the plywood pressing device in one embodiment of the present invention has an ingenious overall structural design, with each component forming a close linkage and cooperation relationship, aiming to solve the core problems of poor timing coordination between side pressure and main pressure and insufficient adaptability in the prior art. The device mainly includes: a side pressure support 1 serving as the overall support frame; a steering pressure mechanism 2 for realizing the conversion and transmission of lateral pressure; and a transmission mechanism 3 for guiding the power of the main pressure stroke to the side pressure action. These three mechanisms are interdependent and together constitute a highly integrated pressing system.

[0023] Specifically, the steering pressure mechanism 2 further includes a pair of side pressure components 21 mounted on the side pressure bracket 1, a flat pressure plate 22 mounted on the same side of the pair of side pressure components 21, a synchronization component 23 mounted between the pair of side pressure components 21, and a balancing component 24 mounted on one side of the pair of side pressure components 21. These sub-components are not isolated, but through ingenious mechanical connections and spatial layout, they achieve synchronous generation, balanced application, and precise control of side pressure. The transmission mechanism 3 includes a guide component 31 mounted on the upper side of the pair of side pressure components 21 and a pair of power components 32 mounted on the lower side of the guide component 31. The guide component 31 is responsible for receiving displacement signals from the main pressure plate (such as the upper or lower pressure plate) of the pressing device, while the power components 32 convert the displacement signals into mechanical power to drive the side pressure components 21 to rotate, thereby converting the vertical main pressure into horizontal side pressure according to a preset proportional relationship.

[0024] During operation, the side-pressure bracket 1, serving as the base of the entire device, is typically fixedly mounted on the housing or frame of the plywood hot press equipment, providing a stable and precise positioning reference for all other components. The side-pressure bracket 1 itself needs sufficient rigidity and strength to withstand various complex loads generated during the pressing process, including enormous pressure from the main pressure direction and reaction forces from the side-pressure components. Its structural design must consider its resistance to deformation under long-term heavy-load conditions, ensuring that the equipment can maintain precise control over the geometric dimensions of the plywood even after repeated use. Simultaneously, the side-pressure bracket 1 is equipped with multiple mounting planes, guide holes, and bearing seats, used to support the side-pressure threaded rod 211, accommodate the guide balance rod 312, fix the balance support rod 242, and mount the synchronous main wheel 232, respectively. The machining accuracy of these mounting positions directly affects the motion accuracy of the entire device and the final forming quality of the plywood.

[0025] Furthermore, the side-pressure assembly 21 is the core actuator for generating lateral force. Each side-pressure assembly 21 specifically includes: a side-pressure threaded rod 211, a side-pressure threaded block 212, and a side-pressure support frame 213. The side-pressure threaded rod 211 is horizontally positioned on the upper side of the side-pressure support 1, with its axial direction aligned with the lateral pressing direction of the plate. The surface of the side-pressure threaded rod 211 is machined with precision transmission threads, which can be trapezoidal or rectangular threads to balance transmission efficiency and load-bearing capacity. The arrangement of the side-pressure threaded rod 211 allows it to precisely drive the meshing side-pressure threaded block 212 to generate linear displacement along the axial direction through rotational motion around its own axis. This helical transmission method has a self-locking characteristic, maintaining the stable position of the flat pressure plate 22 even under fluctuating external loads, preventing accidental release of lateral pressure. The side-pressure threaded block 212 is sleeved on the side-pressure threaded rod 211, with its internal thread forming a kinematic pair with the external thread of the side-pressure threaded rod 211. When the side-pressure threaded rod 211 is driven to rotate by the power component 32 or the synchronization component 23, the side-pressure threaded block 212 will move smoothly along the axis of the side-pressure threaded rod 211, and its direction of movement depends on the rotation direction of the side-pressure threaded rod 211. The side-pressure support frame 213 is fixedly connected to the side-pressure threaded block 212 and moves together with the side-pressure threaded block 212. As an intermediate component connecting the side-pressure threaded block 212 and the flat pressure plate 22, the side-pressure support frame 213 can be L-shaped, T-shaped, or box-shaped. It needs to ensure sufficient connection rigidity while minimizing its own weight to reduce motion inertia. The flat pressure plate 22 is fixed to a pair of side-pressure support frames 213. When the side-pressure threaded rods 211 of the two side-pressure components 21 rotate synchronously, the two side-pressure threaded blocks 212 will drive their respective side-pressure support frames 213 and flat pressure plates 22 to move towards or away from each other, thereby realizing the compression or release of the side of the slab. This dual-sided synchronous drive design ensures that the flat plate 22 remains parallel and in close contact with the side of the blank throughout the entire pressing process, avoiding skewing or stress concentration of the plate due to unilateral force application.

[0026] To further optimize the support conditions and smoothness of the side-pressure threaded rod 211, a pair of side-pressure support plates 214 are provided between the side-pressure threaded rod 211 and the side-pressure bracket 1. These two side-pressure support plates 214 are located near both ends of the side-pressure threaded rod 211, forming a stable simply supported or double-supported structure. The side-pressure threaded rod 211 passes through these two side-pressure support plates 214 and the side-pressure threaded block 212. The side-pressure support plates 214 not only provide radial support for the side-pressure threaded rod 211 but also restrict its axial movement, ensuring that the meshing clearance of the helical pair is always within a reasonable range. A side-pressure bearing 215 is further provided at the contact point between the side-pressure threaded rod 211 and the side-pressure support plate 214. The side-pressure bearing 215 can be a deep groove ball bearing, an angular contact ball bearing, or a tapered roller bearing, selected according to the direction of force. The side pressure bearing 215 significantly reduces the frictional resistance of the side pressure threaded rod 211 during high-speed or heavy-load rotation, reducing the loss of driving energy and avoiding direct metal-to-metal wear, thus significantly extending the service life of the side pressure threaded rod 211 and the side pressure support plate 214. Furthermore, the presence of the side pressure bearing 215 improves the accuracy of rotational motion and reduces vibration or noise caused by uneven friction. The side pressure threaded block 212 and the side pressure support frame 213 are rigidly connected, such as by multiple high-strength bolts or welding, ensuring no relative movement between them. A pair of side pressure support frames 213 are then fixedly connected to the flat pressure plate 22, thus forming a complete and rigid force transmission path from the side pressure threaded rod 211 to the flat pressure plate 22. The working surface of the flat pressure plate 22 needs to be precision machined and surface hardened to withstand repeated extrusion contact and ensure uniform pressure distribution on the side of the slab.

[0027] The function of the synchronization component 23 is to enable precise synchronous rotation of the two side-pressure threaded rods 211 independently, without relying on the power of the main pressure stroke, when manual adjustment or initial setting of the initial spacing of the flat pressure plate 22 is required. Specifically, the synchronization component 23 includes a secondary synchronization pulley 231, a primary synchronization pulley 232, and a timing belt 233. The secondary synchronization pulley 231 is fixedly installed at the end of the side-pressure threaded rod 211 away from the flat pressure plate 22, i.e., the extended end of the side-pressure threaded rod 211. A secondary synchronization pulley 231 is installed at the end of each side-pressure threaded rod 211. The primary synchronization pulley 232 is located on the side of the side-pressure bracket 1, usually at a suitable position between the two secondary synchronization pulleys 231, for easy access and control by the operator. The primary synchronization pulley 232 is rotatably connected to the side-pressure bracket 1 via a rotating shaft, and its rim is machined with teeth or grooves that match the timing belt 233. A synchronous belt 233 wraps around the main synchronous pulley 232 and the two secondary synchronous pulleys 231, connecting the three into a synchronous transmission circuit. The synchronous belt 233 can be a toothed synchronous belt to ensure precise transmission without slippage; it can also be a flat belt or a V-belt, suitable for light loads or applications with slightly lower precision requirements. When the operator manually or with auxiliary tools rotates the main synchronous pulley 232, the rotational motion of the main synchronous pulley 232 is simultaneously transmitted to the two secondary synchronous pulleys 231 through the synchronous belt 233, thereby driving the two side-pressure threaded rods 211 to rotate at the same angular velocity and in the same direction of rotation. Since the thread parameters of the two side-pressure threaded rods 211 are exactly the same, and rigid linkage is achieved through the synchronous belt 233, the two side-pressure threaded blocks 212 will move the same distance at the same speed, thereby causing the flat pressure plate 22 to smoothly move closer to or away from the center of the plate. This independent adjustment function is particularly useful after the sheet metal is assembled but before formal pressing. The operator can rotate the synchronous main wheel 232 to allow the flat pressure plate 22 to gently clamp the sides of the multi-layer veneer, precisely aligning all the veneers horizontally and correcting any misalignment during assembly, thereby improving the dimensional accuracy and edge neatness of the final sheet metal. This synchronization mechanism also allows the equipment to quickly and accurately adjust the initial opening size of the flat pressure plate 22 when changing to sheets of different widths, enhancing the equipment's versatility.

[0028] To ensure that the flat plate 22 maintains a stable posture without tilting or warping while bearing lateral pressure and descending with the main pressure stroke, the device is specially equipped with a balancing assembly 24. The balancing assembly 24 includes a balancing positioning rod 241 and a balancing support rod 242. The balancing positioning rod 241 is horizontally positioned between a pair of side-pressure threaded rods 211, and its axis is parallel to the axis of the side-pressure threaded rods 211. One end or the middle of the balancing positioning rod 241 is fixedly connected to the back of the flat plate 22, so that any horizontal movement of the flat plate 22 will cause the balancing positioning rod 241 to move synchronously. The balancing support rod 242 is positioned between the balancing positioning rod 241 and the side-pressure bracket 1. Specifically, one end of the balancing support rod 242 is fixedly connected to the side-pressure bracket 1, and the other end is designed with a guide hole or guide sleeve, through which the balancing positioning rod 241 passes and can slide freely within the hole. The balance support rod 242 provides additional radial support and guidance for the balance positioning rod 241, preventing the balance positioning rod 241 from bending or shifting when subjected to eccentric torque. More importantly, the balance support rod 242 restricts the pitch movement of the flat plate 22 in the vertical plane. When the main pressure plate presses down, if the plate thickness is uneven, uneven vertical force may be generated on the flat plate 22. The sliding pair formed by the balance positioning rod 241 and the balance support rod 242 can effectively resist this deflection tendency, forcing the flat plate 22 to maintain its ideal posture with its working surface perpendicular to the side of the plate. At the same time, when multiple sets of side pressure components work together, the balance component 24 also plays a role in mechanical synchronization, ensuring that the movement distance of the side pressure threaded blocks 212 on both sides is strictly consistent, further ensuring the linearity of the movement of the flat plate 22. The setting of the balance positioning rod 241 through the balance support rod 242 ensures that the cooperation between the two guarantees both free sliding and sufficient constraint stiffness.

[0029] The guide assembly 31 in the transmission mechanism 3 is responsible for establishing the connection with the main pressure movement. The guide assembly 31 includes a guide mounting plate 311 and guide balance bars 312. The guide mounting plate 311 is horizontally positioned above a pair of side-pressure threaded rods 211, and its position is precisely designed so that when the main pressure plate (e.g., the upper pressure plate of a hot press) moves downward, it can first contact and press down on the guide mounting plate 311. The guide mounting plate 311 is usually fixedly connected to the main pressure plate, or designed as an independent component that moves synchronously with the main pressure plate. The guide balance bars 312 are fixed to the lower side of the guide mounting plate 311 and extend vertically downward, passing through guide holes opened on the side-pressure bracket 1. The number of guide balance bars 312 can be two, four or more, symmetrically arranged around the guide mounting plate 311. As the guide mounting plate 311 moves downward with the main pressure plate, the guide balance bar 312 slides within the guide hole of the side pressure bracket 1, providing precise vertical guidance for the movement of the entire guide assembly 31. This prevents the guide mounting plate 311 from shifting horizontally or rotating during descent, ensuring that the downward pressure is transmitted evenly and stably to the power assembly 32 below. Furthermore, the guide balance bar 312 also serves to limit the maximum stroke and provide cushioning; a limit block or buffer pad can be installed at its lower end to prevent rigid collisions between moving parts.

[0030] The power assembly 32 is the key component for realizing the motion conversion from vertical main pressure displacement to horizontal lateral pressure rotation. The power assembly 32 includes a power gear plate 321, a power gear 322, and a power latch 323. The upper end of the power gear plate 321 is rotatably connected to the lower side of the guide mounting plate 311. Specifically, a hinge hole can be provided at the top of the power gear plate 321, which is connected to a lug on the guide mounting plate 311 via a pin, allowing the power gear plate 321 to swing around the hinge point in the vertical plane. A straight rack is machined in the lower region of the power gear plate 321, and the module of the rack matches that of the power gear 322. The power gear 322 is fixedly mounted on the lateral pressure threaded rod 211, typically located near the middle or end of the lateral pressure threaded rod 211, and rotates together with the lateral pressure threaded rod 211. The power gear 322 and the rack on the power gear plate 321 are always in mesh. In the initial state, when the guide mounting plate 311 is at its highest position, the meshing point between the power gear 321 and the power gear 322 is located at one end of the rack. When the guide mounting plate 311 is driven downward by the main pressure plate, the power gear 321 is also driven downward. Since the upper end of the power gear 321 is rotatably connected to the guide mounting plate 311, while the lower end of the rack meshes with the fixed power gear 322, this constraint forces the power gear 321 to oscillate around its top hinge point during downward movement. Simultaneously, the rack slides relative to the power gear 322, thereby driving the power gear 322 to rotate. A definite correspondence exists between the rotational angular velocity of the power gear 322 and the downward movement speed of the guide mounting plate 311. This relationship is determined by factors such as the rack's inclination angle and the gear's pitch circle radius. By rationally designing these geometric parameters, proportional linkage between the main pressure stroke and the side pressure stroke can be achieved. For example, when the main pressure plate descends a unit distance, the flat pressure plate 22 can move inward by a specific proportional distance, thereby increasing the side pressure synchronously and proportionally with the increase of the main pressure. This purely mechanical linkage method has the advantages of fast response, no delay, and high reliability, avoiding the lag and complexity that may be caused by using hydraulic or electrical closed-loop control. The power latch 323 is located on the outside of the power toothed plate 321 and is rotatably connected to the side pressure bracket 1. The power latch 323 can be a swingable pawl or locking block, which temporarily locks the power toothed plate 321 when it moves to certain specific positions (e.g., when it reaches its maximum stroke or when pressure needs to be maintained), preventing the power toothed plate 321 from returning to its original position due to vibration or backlash, thereby maintaining the continuous stability of the side pressure. In addition, in some embodiments, the power latch 323 can also cooperate with a return spring or other mechanism to assist the power toothed plate 321 in returning to its initial position when the main pressure plate rises back, preparing for the next pressing cycle.

[0031] In summary, the plywood pressing device provided by this invention achieves mechanical linkage and proportional synchronization between the main pressing stroke and the side pressing stroke through a sophisticated combination of a side pressing bracket, a steering pressure mechanism, and a transmission mechanism. The working process of the device is as follows: Before pressing begins, the operator can rotate the synchronous main wheel, using a synchronous belt to drive the synchronous secondary wheels on both sides, causing a pair of side pressing threaded rods to rotate synchronously. This drives the side pressing threaded blocks and the flat pressing plate to move, adapting to slabs of different widths and completing the horizontal alignment of multiple layers of veneer. Subsequently, the main pressing plate begins to descend, driving the guide mounting plate downwards. The guide balance bar ensures the vertical stability of the descent process. The guide mounting plate presses down on the power gear plate, which drives the power gear to rotate through its rack. The power gear drives the side pressing threaded rods to rotate. The rotation of the side pressing threaded rods causes the side pressing threaded blocks to move inwards, pushing the side pressing support frame and the flat pressing plate, thereby applying lateral pressure to the slab. Because there is a definite geometric relationship between the descent distance of the main pressing plate and the rotation angle of the side pressing threaded rods, the lateral pressure can act synchronously and proportionally around the slab with the main pressing stroke. Throughout the pressing process, the balancing assembly continuously ensures the smooth movement and precise alignment of the flat platen, while the power latch can lock the power gear plate to maintain pressure when needed. When the bonding is complete and the main platen rises back, the power gear plate moves upward under its own weight or the action of the reset mechanism, driving the power gear to rotate in the opposite direction, causing the side pressure thread block and the flat platen to return to their initial positions, completing one work cycle.

[0032] Through the synergistic effect of the aforementioned mechanisms, this device effectively suppresses the lateral extrusion of adhesive and fibers towards the edge of the plywood during the pressing process, significantly improving the density and bonding strength of the edge area and reducing material waste in subsequent edge trimming processes. Simultaneously, since the side pressing action is entirely mechanically driven by the main pressing stroke, without relying on additional sensors or control systems, the device exhibits excellent adaptability to plywood of different thicknesses and materials. Whenever the main pressing stroke changes, the side pressing stroke adjusts proportionally, eliminating the need for frequent manual adjustments. Furthermore, the independent synchronization component design greatly facilitates initial centering and width adjustment, enhancing the equipment's operational flexibility and applicability. The entire device is compact in structure and reliable in principle, making it particularly suitable for large-scale continuous plywood production with stringent edge quality requirements.

[0033] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plywood pressing device, characterized in that, include: Side-pressure support; The steering pressure mechanism includes a pair of side pressure components disposed on the side pressure bracket, a flat pressure plate disposed on one side of the pair of side pressure components, a synchronization component disposed between the pair of side pressure components, and a balancing component disposed on one side of the pair of side pressure components; The transmission mechanism includes a guide assembly disposed on the upper side of the pair of side pressure assemblies and a pair of power assemblies disposed on the lower side of the guide assembly.

2. The plywood pressing device according to claim 1, characterized in that, The side pressure assembly includes: A side-pressure threaded rod is provided on the upper side of the side-pressure bracket; A side-pressure threaded block is provided on the side-pressure threaded rod; A side-pressure support frame is mounted on the side-pressure threaded block.

3. The plywood pressing device according to claim 2, characterized in that, A pair of side pressure support plates are provided between the side pressure threaded rod and the side pressure bracket, and the side pressure threaded rod passes through the side pressure support plate and the side pressure threaded block.

4. The plywood pressing device according to claim 2, characterized in that, A side pressure bearing is provided between the side pressure threaded rod and the side pressure support plate, the side pressure threaded block is fixedly connected to the side pressure support frame, and a pair of the side pressure support frames are fixedly connected to the flat pressure plate.

5. The plywood pressing device according to claim 2, characterized in that, The synchronization component includes: The synchronous secondary wheel is located at the end of the side-pressure threaded rod away from the flat pressure plate; The synchronous main wheel is located on one side of the side pressure bracket; A timing belt is positioned between the primary timing pulley and a pair of secondary timing pulleys.

6. The plywood pressing device according to claim 5, characterized in that, The secondary synchronous pulley is fixedly connected to the side-pressure threaded rod, the primary synchronous pulley is rotatably connected to the side-pressure bracket, and the synchronous belt is matched with the primary synchronous pulley and the secondary synchronous pulley.

7. The plywood pressing device according to claim 5, characterized in that, The balancing component includes: A balance positioning rod is positioned between a pair of side-pressure threaded rods; A balance support rod is disposed between the balance positioning rod and the side pressure bracket.

8. The plywood pressing device according to claim 7, characterized in that, The balance positioning rod is fixedly connected to the flat pressure plate, the balance positioning rod passes through the balance support rod, and the balance support rod is fixedly connected to the side pressure bracket.

9. The plywood pressing device according to claim 7, characterized in that, The guiding component includes: A guide mounting plate is disposed on the upper side of the pair of said side-pressed threaded rods; A guide balance bar is installed on the lower side of the guide mounting plate and extends through the side pressure bracket.

10. The plywood pressing device according to claim 9, characterized in that, The power assembly includes: A power gear plate is disposed on the lower side of the guide mounting plate and is rotatably connected to the guide mounting plate; A power gear is mounted on the side-pressure threaded rod and matches the power gear plate. A power buckle is located on the outside of the power toothed plate and is rotatably connected to the side pressure bracket.

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