A reconstituted unit sizing system and process for preparing reconstituted wood

Abstract

The application discloses a kind of recombination unit sizing system and recombination material preparation process, belong to recombination material manufacturing technical field.Recombination unit sizing system, including front and rear arrangement's impregnation device, glue discharging device and the conveying guide between them.Impregnation device includes: first rack;Glue pool;Impregnation roller assembly, sequentially distributed and arranged on first rack along the direction of plate conveying;First rotary drive device;First rotary transmission assembly.Glue discharging device includes: second rack;Glue discharging roller assembly, sequentially distributed and arranged on second rack along the direction of plate conveying;Second rotary drive device;Second rotary transmission assembly.The recombination unit sizing system is extruded by multiple impregnation rollers, multiple glue discharging rollers are discharged, independently driven and controlled and process design, realizes the efficient, uniform impregnation and accurate, controllable glue discharging of recombination unit, and ensures the quality stability of final product.

Description

Technical Field

[0001] This invention relates to the field of reconstituted material manufacturing, and in particular to a reconstituted unit sizing system and a reconstituted material preparation process. Background Technology

[0002] Reconstituted materials (such as reconstituted bamboo and reconstituted wood) are high-performance, high-value-added, green, low-carbon, and environmentally friendly composite materials made from bamboo or wood through directional recombination technology and adhesives. Due to their excellent physical and mechanical properties and environmental characteristics, they are widely used in construction, furniture, landscaping, transportation, and other fields. In the production process of reconstituted materials, adhesive application is a crucial step; the uniform distribution of the adhesive within the reconstituted units directly affects the stability of the final product's performance.

[0003] In many existing production lines, dipping and discharging are often treated as two relatively independent processes, with equipment scattered throughout and sometimes requiring manual handling. Currently, companies mainly use an intermittent cage-type glue application process, where the reconstituted unit is placed in a specially designed cage, then left in a glue application tank for a period of time before being lifted out of the tank, excess glue is drained, and the unit is then equilibrated for 4 hours to 7 days before drying. This method is simple to operate and requires less investment, but it has the following three problems:

[0004] (1) The amount and uniformity of adhesive application are difficult to control precisely. The control of the amount of adhesive applied to the reconstituted unit is mainly achieved by adjusting the degree of refraction of the reconstituted unit, the solid content of the adhesive, and controlling the application time and dripping time. It is a control of the overall amount of adhesive applied to a large number of reconstituted units. The uniformity of adhesive application to the reconstituted unit directly affects the quality of the reconstituted material product. This adhesive application process will lead to the instability of product quality.

[0005] (2) The labor intensity is high, making it difficult to achieve continuous production of the reconstituted bamboo unit sizing-drying stage. Both loading and unloading the reconstituted bamboo unit into the cage requires manual operation; moreover, due to the long sizing stage, it is difficult to form continuous production with the subsequent drying process. With the increase in labor costs and the expansion of enterprise scale, this sizing process is difficult to meet the requirements of the reconstituted bamboo industry development.

[0006] (3) Poor coordination between processes may lead to adhesive dripping and environmental contamination or changes in the adhesive layer state during the transfer of the reconstituted unit after adhesive application (such as partial pre-curing of adhesive), affecting process stability and product quality stability. These problems restrict the further improvement of the quality of reconstituted materials and the reduction of production costs.

[0007] Therefore, there is an urgent need to develop an efficient, uniform, and controllable sizing system for recombining units. Summary of the Invention

[0008] This invention provides a recombinant unit sizing system and a recombinant material preparation process, which can achieve deep and uniform sizing, precise and controllable sizing discharge, continuous and automated production, and allows independent adjustment of sizing and sizing process parameters, thereby overcoming the above-mentioned defects of the prior art.

[0009] A first aspect of the present invention provides a recombining unit adhesive application system, comprising an impregnation device, an adhesive discharge device, and a conveying guide between the two, arranged at the front and rear.

[0010] The impregnation device includes:

[0011] - First rack;

[0012] - Glue tank, installed on the first frame;

[0013] - A dipping roller assembly, having at least three, is arranged sequentially on the first frame along the conveying direction of the sheet material. The dipping roller assembly is located in the glue tank and is used to squeeze and impregnate the recombining unit. The dipping roller assembly includes an upper dipping roller and a lower dipping roller arranged correspondingly above and below.

[0014] - A first rotary drive device, mounted on a first frame, for providing rotary drive force to a first rotary transmission assembly; and

[0015] - A first rotary transmission assembly, connecting a first rotary drive device and a dip roller assembly;

[0016] The glue discharge device includes:

[0017] -Second rack;

[0018] - A glue discharge roller assembly, having at least two, is arranged sequentially on the second frame along the conveying direction of the sheet material; the glue discharge roller assembly includes an upper glue discharge roller and a lower glue discharge roller arranged vertically and vertically; the reassembly unit passes between the upper glue discharge roller and the lower glue discharge roller; and is used to discharge excess adhesive from the reassembly unit;

[0019] - A second rotary drive device, mounted on the second frame, for providing rotary drive force to the second rotary transmission assembly; and

[0020] - The second rotary transmission assembly connects the second rotary drive device and the glue discharge roller assembly.

[0021] According to the aforementioned recombining unit adhesive application system, the dip roller assembly further includes:

[0022] - The first frame includes a first side plate and a second side plate that are fixed to the first frame and are disposed opposite to each other;

[0023] -The first skateboard has two parts, which are respectively connected to the first side panel and the second side panel to slide up and down;

[0024] - The upper dip roller shaft is connected at both ends to the first slide plates on the left and right sides respectively via bearings; the upper dip roller is coaxially fixed on the upper dip roller shaft.

[0025] -The lower dip roller shaft is connected to the first side plate and the second side plate respectively by bearings at both ends; the lower dip roller is coaxially fixed on the lower dip roller shaft;

[0026] - The first gear disk assembly includes a first upper gear disk coaxially fixed on the upper dip roller shaft and located outside the first slide plate, and a first lower gear disk coaxially fixed on the lower dip roller shaft and meshing with the first upper gear disk.

[0027] - A first lifting drive assembly is disposed on the first frame and connected to the first slide plate; the first lifting drive assembly drives the first slide plate to move up and down, thereby causing the upper dip roller to move toward or away from the lower dip roller.

[0028] Furthermore, the first rotary drive device is a servo motor and a reducer connected to the servo motor via a belt;

[0029] The first rotary transmission component is a belt drive or chain gear drive component, which is connected to the reducer and also connected to the shaft of the lower dip roller.

[0030] Furthermore, the first rotary transmission assembly includes:

[0031] - The drive gear is located at the output end of the reducer; the drive gear directly meshes with the first lower gear disc of two adjacent sets of dip roller assemblies;

[0032] - The first driven wheel and the second driven wheel are located at the end of the lower dip roller shaft and outside the first lower gear disk;

[0033] The dip roller assemblies that are not directly meshed by the drive gear achieve linkage transmission through the first driven wheel, the second driven wheel at the end of the lower dip roller shaft of the adjacent assembly, and the transmission belt surrounding them.

[0034] According to the aforementioned recombination unit glue application system, the glue tank includes a left side plate and a right side plate arranged in alignment;

[0035] The glue tank also includes a rotating roller sealing plate disposed on the left and right side plates; the rotating roller sealing plate has a through hole, and a ring is disposed on the side of the through hole; a sealing ring is disposed inside the ring.

[0036] The shaft of the lower dip roller passes through the through hole of the roller sealing plate and is sealed and connected with the sealing ring inside the ring sleeve;

[0037] The glue tank also includes:

[0038] The limiting block is located inside the left and right side plates, and the height of the guide block is between the upper and lower dip rollers.

[0039] Furthermore, transition connectors are provided on the outer sides of both the left and right side panels of the glue tank; one end of the transition connector is fixedly connected to the corresponding left or right side panel, and the other end is fixedly connected to the first frame.

[0040] According to the aforementioned recombining unit glue application system, the glue discharge roller assembly further includes:

[0041] - The second frame includes a third side plate and a fourth side plate that are fixed to the second frame and are disposed opposite to each other;

[0042] - The second sliding plate has two parts, which are respectively connected to the third and fourth side plates for sliding up and down;

[0043] - The upper row of rubber rollers has a hollow structure and a first air intake port is provided at one or both ends of the upper row of rubber rollers. The two ends of the upper row of rubber rollers are fixedly connected to the second slide plate. A first slot communicating with the first air intake port is opened in the middle of the upper row of rubber rollers.

[0044] - The lower row of rubber rollers has a hollow structure and a second air intake is provided at one or both ends. The two ends are fixed to the third side plate and the fourth side plate respectively. A second groove communicating with the second air intake is opened in the middle of the lower row of rubber rollers. The second groove; the first groove and the second groove are arranged opposite to each other.

[0045] - The second gear disk assembly includes an upper gear end cover fixedly disposed on one side end face of the upper row of rubber rollers and a lower gear end cover fixedly disposed on one side end face of the lower row of rubber rollers, wherein the upper gear end cover and the lower gear end cover mesh.

[0046] - A second lifting drive assembly is disposed on the second frame and connected to the second slide plate; the second lifting drive assembly drives the second slide plate to move up and down, thereby causing the upper row of rubber rollers to move toward or away from the lower row of rubber rollers.

[0047] The upper row of rubber rollers is a solid cylinder, coaxially sleeved on the upper row of rubber roller shaft and rotating relative to it; the side wall of the upper row of rubber rollers is provided with first through holes arranged in a circumferential and axial array; when the upper row of rubber rollers rotates, the first groove communicates with the corresponding first through hole;

[0048] The lower rubber roller is a solid cylinder, coaxially sleeved on the lower rubber roller shaft and rotating relative to it; the side wall of the lower rubber roller is provided with a second through hole arrayed in both circumference and axial direction; when the lower rubber roller rotates, the second groove communicates with the corresponding second through hole.

[0049] Furthermore, the glue discharge roller assembly also includes tensioning sleeves respectively disposed at both ends of the upper glue discharge roller shaft and the lower glue discharge roller shaft;

[0050] The tension sleeve is connected to the second slide plate, which can lock or unlock the upper row of rubber rollers to the second slide plate;

[0051] The expansion sleeve is connected to the third and fourth side plates, which can lock or unlock the lower rubber roller shaft to the third and fourth side plates.

[0052] According to the aforementioned recombination unit glue application system, the conveying guide is a guide plate, one end of which is a fixed end, fixedly installed at the rear end of the glue pool near the glue discharge device, with the fixed end between the upper glue-dipping roller and the lower glue-dipping roller; the other end of the conveying guide is a free end, facing between the upper glue-discharging roller and the lower glue-discharging roller.

[0053] The height of the fixed end of the conveyor guide is lower than the height of the free end.

[0054] In a second aspect, the present invention provides a process for preparing reconstituted material, wherein the reconstituted material preparation process utilizes the reconstituted unit sizing system of the first aspect of the present invention, and the reconstituted material preparation process includes the following steps:

[0055] S1. Manufacturing of the reconstructed unit: The reconstructed unit consists of wood veneer, bamboo strips, and wood / bamboo bundles;

[0056] Among them, the manufacturing of wood veneer: wood is veneered by a rotary cutting machine to obtain wood veneer with a thickness of 4~8mm and a width of 20~250mm;

[0057] Among them, the manufacturing of bamboo strips involves splitting bamboo tubes into bamboo strips using a bamboo splitting machine;

[0058] Among them, the manufacturing of wood / bamboo bundles: wood veneer or bamboo strips are processed into fibrous wood / bamboo bundles by rolling and disintegrating.

[0059] S2. Moisture content control: Place the recombinant unit obtained in S1 into a drying device and control the moisture content of the recombinant unit to be 5%~40%;

[0060] S3. Sizing process: The recombinant units with the required moisture content obtained in S2 are transported to the recombinant unit sizing system for sizing treatment.

[0061] The recombination unit passes sequentially through the roller gap formed by the upper and lower dip rollers in the dip device;

[0062] The solid content in the adhesive is controlled at 25%, the veneer compression rate is controlled at 50% during the roller pressing and impregnation process of the reconstituted unit, and the roller pressing speed is controlled at 40 m / min;

[0063] After impregnation, the recombining unit removes excess adhesive using an adhesive discharge device; the rotational speeds of the upper and lower discharge rollers are greater than or equal to the rotational speeds of the upper and lower impregnation rollers.

[0064] The amount of adhesive applied to the recombining unit should be controlled at 15%~16%;

[0065] S4. Drying treatment: Place the glued reconstituted units into a drying equipment and dry them until the moisture content is 10%~12%;

[0066] S5. Recombination Molding: The recombinant units obtained in S4 are laid into a slab, and then hot-pressed to prepare a slab with a density of 0.70~1.40 g / cm³. 3 Reconstituted materials.

[0067] The recombinant unit sizing system and recombinant material preparation process provided by this invention have at least the following advantages compared with the prior art:

[0068] (1) In the glue application system of the recombination unit of the present invention, the glue dipping device, the conveying guide, and the glue discharge device are arranged in front and behind, forming a continuous and automated "glue dipping-guiding transfer-glue discharge" production process. This integrated design significantly improves production efficiency and reduces manual intervention and waiting time between processes. The glue application system of the recombination unit achieves efficient and uniform glue dipping and precise and controllable glue discharge of the recombination unit through multi-stage glue dipping roller extrusion glue dipping, multi-stage glue discharge roller glue discharge, independent drive control, and process design, ensuring the quality stability of the final product, while improving production efficiency and automation level.

[0069] (2) The first rotary transmission component in the glue discharge device of the recombining unit glue application system of the present invention adopts a hybrid drive mode of "direct meshing-graded transmission belt drive", which simplifies the structure and achieves efficient power distribution.

[0070] (3) The glue removal device in the recombination unit glue application system of the present invention achieves contact-type and gentle glue removal through adsorption force, which absorbs and collects the excess adhesive on the surface of the recombination unit after glue application, while effectively avoiding material damage and ensuring the uniformity of glue removal and the stability of quality in the recombination unit.

[0071] (4) The recombinant material preparation process of the present invention significantly improves the product performance and production efficiency through the synergistic effect of optimized moisture content control, roller pressing and impregnation, dynamic glue discharge and drying hot pressing. Attached Figure Description

[0072] Figure 1 A three-dimensional structural diagram of the adhesive application system for the recombining unit;

[0073] Figure 2 This is a front view of the resin impregnation apparatus;

[0074] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0075] Figure 4 A three-dimensional structural diagram showing the connection state of the dip roller assembly, the first rotary drive device, and the first rotary transmission assembly. Figure 1 ;

[0076] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0077] Figure 6 for Figure 4 A magnified view of a section at point C;

[0078] Figure 7 A three-dimensional structural diagram showing the connection state of the dip roller assembly, the first rotary drive device, and the first rotary transmission assembly. Figure 2 ;

[0079] Figure 8 for Figure 7 A magnified view of a section at point D;

[0080] Figure 9 A three-dimensional structural diagram showing the combination of the first lower gear disk, the first driven wheel, and the second driven wheel;

[0081] Figure 10 Schematic diagram of the three-dimensional structure of the dip roller assembly Figure 1 ;

[0082] Figure 11 Schematic diagram of the three-dimensional structure of the dip roller assembly Figure 2 ;

[0083] Figure 12 for Figure 11 A magnified view of a section at point E in the middle;

[0084] Figure 13 This is a cross-sectional view of the dip roller assembly;

[0085] Figure 14 A three-dimensional structural diagram showing the connection between the glue tank and the conveying guide. Figure 1 ;

[0086] Figure 15 A three-dimensional structural diagram showing the connection between the glue tank and the conveying guide. Figure 2 ;

[0087] Figure 16 A top view showing the connection between the glue tank and the conveying guide.

[0088] Figure 17 A three-dimensional structural diagram of the roller sealing plate;

[0089] Figure 18 A three-dimensional structural diagram of the glue discharge device;

[0090] Figure 19 A three-dimensional structural diagram showing the connection state of the glue discharge roller assembly, the second rotary drive device, and the second rotary transmission assembly;

[0091] Figure 20 A three-dimensional structural diagram of the glue discharge roller assembly.

[0092] Figure 21 This is a cross-sectional view of the glue discharge roller assembly;

[0093] Figure 22 A three-dimensional structural diagram of the upper rubber roller shaft, the upper rubber roller and the upper gear end cover arranged coaxially;

[0094] Figure 23 A three-dimensional structural diagram of the combined state of the lower rubber roller shaft, the lower rubber roller, and the lower gear end cover, which are arranged coaxially;

[0095] Figure 24 This is a three-dimensional structural diagram of the upper rubber roller shaft.

[0096] Explanation of reference numerals in the attached figures:

[0097] 100. Dipping apparatus;

[0098] 110. First frame; 120. Glue tank; 130. Glue dipping roller assembly; 140. First rotary drive device; 150. First rotary transmission assembly;

[0099] 121. Left side plate; 122. Right side plate; 123. Rotary roller sealing plate; 124. Limiting block; 125. Transition connector; 131. Upper dip roller; 132. Lower dip roller; 133. First frame; 134. First slide plate; 135. Upper dip roller shaft; 136. Lower dip roller shaft; 137. First gear set; 138. First lifting drive assembly; 139. Slide plate stroke control mechanism; 141. Servo motor; 142. Reducer; 151. Drive gear; 152. First driven wheel; 153. Second driven wheel; 154. Transmission belt;

[0100] 123a, Through hole; 123b, Ring sleeve; 133a, First side plate; 133b, Second side plate; 133c, Upper horizontal plate; 137a, First upper gear disk; 137b, First lower gear disk; 138a, Lifting drive motor; 138b, Transmission housing; 138c, Lead screw; 138d, Synchronous shaft; 138e, Pressure sensor; 139a, Positioning block; 139b, Upper limit switch; 139c, Lower limit switch;

[0101] 200. Glue discharge device;

[0102] 210. Second frame; 220. Glue discharge roller assembly; 230. Second rotary drive device; 240. Second rotary transmission assembly;

[0103] 221. Upper row of rubber rollers; 222. Lower row of rubber rollers; 223. Second frame; 224. Second slide plate; 225. Upper row of rubber roller shaft; 226. Lower row of rubber roller shaft; 227. Second gear disc assembly; 228. Second lifting drive assembly; 229. Expansion sleeve;

[0104] 221a, First through hole; 222a, Second through hole; 223a, Third side plate; 223b, Fourth side plate; 225a, First air intake; 225b, First slot; 226a, Second air intake; 226b, Second slot; 227a, Upper gear end cover; 227b, Lower gear end cover;

[0105] 300. Conveying guide components. Detailed Implementation

[0106] To make the technical problem to be solved, the technical solution and advantages of the present invention clearer, the following description will be provided in conjunction with the accompanying drawings. Figures 1 to 24 The technical solution of the present invention will be clearly and completely described in conjunction with specific embodiments.

[0107] This invention provides a reconstituted unit adhesive application system, including a dipping device 100, an adhesive discharge device 200, and a conveying guide 300 arranged at the front and rear. The reconstituted units are dipped in the dipping device 100, where adhesive (such as phenolic resin, MPF resin, etc.) is introduced into the loosened wood or bamboo units through penetration, allowing it to bond with the fibers and thereby enhancing the structural strength and stability of the board. The adhesive discharge device 200 discharges excess adhesive from the surface of the dipped reconstituted units. The conveying guide 300 connects the dipping and discharge processes.

[0108] The dipping apparatus 100 includes a first frame 110, a glue tank 120, a dipping roller assembly 130, a first rotary drive device 140, and a first rotary transmission assembly 150.

[0109] The first frame 110 provides a solid foundation support for the glue tank 120, the glue dipping roller assembly 130, the first rotary drive device 140, and the first rotary transmission assembly 150, ensuring the rigidity and stability of the equipment during the extrusion process.

[0110] A glue tank 120 is disposed on the first frame 110, and the adhesive for impregnation is contained in the glue tank 120. Specifically, according to the aforementioned adhesive application system for the recombination unit, the glue tank 120 includes a left side plate 121 and a right side plate 122 aligned together, and a roller sealing plate 123 is also disposed on the left side plate 121 and the right side plate 122. The roller sealing plate 123 has a through hole 123a, which provides a channel for the rotating shaft to pass through. A ring 123b is disposed on the side of the through hole 123a, and a sealing ring is disposed inside the ring 123b. The ring 123b provides a cavity for accommodating and fixing the sealing ring, and the sealing ring prevents adhesive leakage at the connection position. The lower impregnation roller shaft 136 passes through the through hole 123a of the roller sealing plate 123 and is sealed and connected with the sealing ring inside the ring 123b.

[0111] The sealing ring tightly wraps around the rotating lower impregnation roller shaft 136, forming an effective dynamic sealing barrier between the shaft and the ring sleeve / roller sealing plate. The structural combination design prevents the adhesive in the glue pool from leaking outward along the gap between the shaft and the through hole, ensuring the stability of the adhesive composition and the uniformity of the impregnation depth.

[0112] Furthermore, the glue tank 120 also includes a limiting block 124, which is disposed inside the left side plate 121 and the right side plate 122. The height of the limiting block 124 is between the upper glue-dipping roller 131 and the lower glue-dipping roller 132. The setting of the limiting block 124 ensures that the recombination unit is always positioned between the upper glue-dipping roller 131 and the lower glue-dipping roller 132 during the transfer process of the glue-dipping device 100, thus ensuring the uniformity of glue dipping of the recombination unit.

[0113] Furthermore, transition connectors 125 are provided on the outer sides of the left side plate 121 and the right side plate 122 of the glue tank 120. The transition connectors 125 are formed by bending steel plates, with one end fixedly connected to the corresponding left side plate 121 or right side plate 122, and the other end fixedly connected to the first frame 133. By providing the transition connectors 125, the glue tank 120 and the dipping roller assembly 130 are stably connected. In this embodiment, the transition connectors 125 on both sides of the glue tank 120 are fixedly connected to the first side plate 133a and the second side plate 133b of the first frame 133 by bolts.

[0114] There are at least three dip roller assemblies 130, all of which are sequentially arranged on the first frame 110 along the conveying direction of the sheet material. The dip roller assemblies 130 are located in the glue tank 120 and are used for extruding glue onto the reassembly unit. Each dip roller assembly 130 includes an upper dip roller 131 and a lower dip roller 132 arranged vertically, and the reassembly unit achieves extrusion glue impregnation between the upper dip roller 131 and the lower dip roller 132.

[0115] The dip roller assembly 130 further includes: a first frame 133, including a first side plate 133a and a second side plate 133b fixedly mounted on the first frame 110; two first slide plates 134, which are slidably connected to the first side plate 133a and the second side plate 133b respectively; an upper dip roller shaft 135, whose two ends are respectively connected to the first slide plates 134 on the left and right sides via bearings; an upper dip roller 131 coaxially fixedly mounted on the upper dip roller shaft 135; a lower dip roller shaft 136, whose two ends are respectively connected to the first side plate 133a and the second side plate 133b via bearings; a lower dip roller 132 coaxially fixedly mounted on the lower dip roller shaft 136; and a first gear disc assembly 137, including a coaxially fixed... A first upper gear disk 137a is mounted on the upper dip roller shaft 135 and located outside the first slide plate 134, and a first lower gear disk 137b is coaxially fixed on the lower dip roller shaft 136 and meshes with the first upper gear disk 137a; a first lifting drive assembly 138 is mounted on the first frame 133 and connected to the first slide plate 134; the first lifting drive assembly 138 drives the first slide plate 134 to move up and down, thereby causing the upper dip roller 131 to move toward or away from the lower dip roller 132. The extrusion gap formed by the upper and lower dip rollers, which are arranged vertically and vertically, applies controllable pressure to the recombination unit, which not only promotes the penetration of adhesive, but also squeezes out the air inside the recombination unit, avoiding the residual air bubbles that cause uneven adhesive impregnation.

[0116] The first upper gear disk 137a is fixed to the upper dip roller shaft 135, and the first lower gear disk 137b is fixed to the lower dip roller shaft 136, and the two are always in a meshed state. Regardless of the height of the upper dip roller 131 (i.e., regardless of the change in the roller gap), this pair of meshing gear disks forcibly ensures that the upper dip roller 131 and the lower dip roller 132 rotate in opposite directions at exactly the same linear velocity (rotational speed). When the reconstituted unit material is conveyed between the upper and lower rollers, if the speeds of the two rollers are inconsistent, it can cause the material to be stretched, wrinkled, or even torn. Forced synchronization completely eliminates this risk. Speed ​​synchronization ensures that the traction force and impregnation effect on the material in the roller gap are consistent, thereby obtaining a uniform adhesive coating. Only one dip roller shaft (lower dip roller shaft 136) needs to be driven to drive the other dip roller shaft (upper dip roller shaft 135) to rotate synchronously through gear meshing. There is no need to configure a complex floating drive mechanism (such as universal coupling, transmission belt tension adjustment mechanism, etc.) separately for the upper roller, which simplifies the design and cost of the drive system.

[0117] The robust frame, sliding plate guides, and bearing supports provide the necessary rigidity, stability, and reliability for the entire assembly's operation (especially lifting and rotation). The bearings ensure smooth, low-friction rotation of both upper and lower roller shafts, allowing for radial loads (primarily material pressure and gear meshing forces) while permitting a degree of axial float or positioning. This is fundamental to ensuring the long-term stable operation of the equipment.

[0118] A first rotary drive device 140 is mounted on a first frame 110 to provide rotary driving force to a first rotary transmission assembly 150. The first rotary drive device 140 is a device capable of outputting rotation, such as a motor, engine, hydraulic motor, or a combination of one of these with a speed reducer. In this embodiment of the invention, the first rotary drive device 140 is a servo motor 141 and a speed reducer 142 that is connected to the servo motor 141 via a belt.

[0119] The first rotary transmission assembly 150 connects the first rotary drive device 140 and the dip roller assembly 130. The first rotary transmission assembly 150 is a belt drive or chain gear drive assembly, connected to the reducer 142 and driven by the lower dip roller shaft 136.

[0120] The first rotary transmission assembly 150 of this embodiment includes: a drive gear 151 disposed at the output end of the reducer 142; the drive gear 151 directly meshes with the first lower gear disk 137b of two adjacent dip roller assemblies 130; a first driven wheel 152 and a second driven wheel 153 are disposed at the end of the lower dip roller shaft 136 and located outside the first lower gear disk 137b. The dip roller assemblies 130 not directly meshed with the drive gear 151 achieve linkage transmission through the first driven wheel 152, the second driven wheel 153 at the end of the lower dip roller shaft 136 of adjacent assemblies, and a transmission belt 154 surrounding them.

[0121] In embodiments of the present invention, such as Figures 4 to 9 As shown, the first driven wheel 152 and the second driven wheel 153 are sprockets, and the transmission belt 154 is a chain that matches the first driven wheel 152 and the second driven wheel 153. It is suitable for high torque scenarios and matches the sprockets. The dip roller assembly 130 is arranged in five groups from front to back. The driving gear 151 directly meshes with the first lower gear disk 137b of the third and fourth dip roller assemblies 130, respectively. The dip roller assemblies 130 that are not directly meshed by the driving gear 151 (between the first and second dip roller assemblies 130, between the second and third dip roller assemblies 130, and between the fourth and fifth dip roller assemblies 130) achieve linkage transmission through the first driven wheel 152, the second driven wheel 153, and the transmission belt 154.

[0122] The first driven pulley 152 and the second driven pulley 153 can be synchronous pulleys, and the transmission belt 154 is a synchronous belt that matches the first driven pulley 152 and the second driven pulley 153. It is suitable for scenarios that require noise reduction and anti-slip, and is matched with the synchronous pulley.

[0123] The drive gear 151 directly drives two adjacent sets of dipped roller assemblies 130 to form the main transmission core, ensuring high torque output and avoiding single-point drive overload; the drive gear 151 directly meshes with the first lower gear disk 137b to provide a reference speed, and the transmission belt linkage group follows synchronously, avoiding speed deviation caused by excessively long transmission chains in multi-roller groups.

[0124] The drive gear 151 drives the two sets of pressure rollers in the middle position, placing the power input in the middle of the system, reducing the difference in transmission chain length on both sides, and reducing vibration caused by uneven torque transmission. The middle drive mode distributes the load on the transmission belt, avoiding transmission belt wear problems caused by excessively long transmission paths at the end pressure rollers. In addition, the first lower gear disc 137b, the first driven pulley 152, and the second driven pulley 153 are coaxially fixed to the end of the lower dip roller shaft 136, eliminating the need for an additional transmission shaft, reducing lateral installation space, and making it suitable for compact equipment. The first rotary transmission assembly 150 adopts a hybrid drive mode of "direct meshing-stage transmission belt drive", which simplifies the structure while achieving efficient power distribution.

[0125] The reassembly unit is subjected to multiple continuous compression impregnations using at least three dipping roller assemblies 130 arranged sequentially along the conveying direction, ensuring that the adhesive can fully and uniformly penetrate into the internal structure of the reassembly unit. A portion of the upper dipping roller 131 and the entire lower dipping roller 132 are immersed in the adhesive in the adhesive pool 120. The reassembly unit achieves compression impregnation between the upper and lower dipping rollers 131 and 132, ensuring that the reassembly unit remains in contact with the adhesive throughout the entire impregnation process.

[0126] The impregnation apparatus 100 provided in this embodiment of the invention is suitable for industrial impregnation equipment that requires precise control of impregnation process parameters (such as pressure and roller gap) and ensures the synchronicity of material delivery.

[0127] The glue discharge device 200 includes a second frame 210, a glue discharge roller assembly 220, a second rotary drive device 230, and a second rotary transmission assembly 240.

[0128] The second frame 210 provides a solid foundation support for the dispensing roller assembly 220, the second rotary drive device 230, and the second rotary transmission assembly 240, ensuring the rigidity and stability of the equipment during the extrusion process.

[0129] There are at least two glue discharge roller assemblies 220, and all glue discharge roller assemblies 220 are sequentially arranged on the second frame 210 along the conveying direction of the sheet material, for discharging excess adhesive from the reassembly unit. The glue discharge roller assembly 220 includes an upper glue discharge roller 221 and a lower glue discharge roller 222 arranged vertically, and the reassembly unit passes between the upper glue discharge roller 221 and the lower glue discharge roller 222.

[0130] The upper and lower glue-discharging rollers 221 and 222 discharge glue to the recombination unit by squeezing. Alternatively, the upper and lower glue-discharging rollers 221 and 222 can also discharge glue to the recombination unit using negative pressure. Specifically, the negative pressure glue discharge structure is as follows:

[0131] The glue discharge roller assembly 220 also includes a second frame 223, a second slide plate 224, an upper glue discharge roller shaft 225, a lower glue discharge roller shaft 226, a second gear disk assembly 227, and a second lifting drive assembly 228.

[0132] The second frame 223 includes a third side plate 223a and a fourth side plate 223b fixedly mounted on the second frame 210, which are used to support the second slide plate 224, the upper row of rubber roller shafts 225 and the lower row of rubber roller shafts 226. There are two second slide plates 224, which are slidably connected to the third side plate 223a and the fourth side plate 223b respectively.

[0133] The upper row of rubber rollers 225 and the lower row of rubber rollers 226 are hollow structures. The upper row of rubber rollers 225 has a first air intake 225a at one or both ends, and the lower row of rubber rollers 226 has a second air intake 226a at one or both ends. The first and second air intakes 225a are connected to an external air extraction device. The upper row of rubber rollers 225 has a first groove 225b in the middle that communicates with the first air intake 225a, and the lower row of rubber rollers 226 has a second groove 226b in the middle that communicates with the second air intake 226a. The first and second grooves 225b are positioned opposite each other. The two ends of the upper row of rubber rollers 225 are fixedly connected to the second sliding plate 224, and the two ends of the lower row of rubber rollers 226 are fixedly connected to the third side plate 223a and the fourth side plate 223b, respectively. The second gear assembly 227 includes an upper gear end cap 227a fixedly disposed on one end face of the upper rubber roller 221 and a lower gear end cap 227b fixedly disposed on one end face of the lower rubber roller 222, with the upper gear end cap 227a and the lower gear end cap 227b meshing together. A second lifting drive assembly 228 is disposed on the second frame 223 and connected to the second slide plate 224; the second lifting drive assembly 228 drives the second slide plate 224 to move up and down, thereby causing the upper rubber roller 221 to move toward or away from the lower rubber roller 222. The upper and lower rubber rollers, arranged vertically and vertically respectively, form a precise gap, which effectively removes excess adhesive and prevents excessive compression that could damage the reconstituted unit structure or cause excessive adhesive loss, thus affecting the bonding strength.

[0134] The upper rubber roller 221 is a solid cylinder, coaxially sleeved on the upper rubber roller shaft 225 and rotating relative to it; the side wall of the upper rubber roller 221 has a first through hole 221a arranged in a circumferential and axial array; when the upper rubber roller 221 rotates, the first groove 225b communicates with the corresponding first through hole 221a. The lower rubber roller 222 is a solid cylinder, coaxially sleeved on the lower rubber roller shaft 226 and rotating relative to it; the side wall of the lower rubber roller 222 has a second through hole 222a arranged in a circumferential and axial array; when the lower rubber roller 222 rotates, the second groove 226b communicates with the corresponding second through hole 222a.

[0135] The upper roller 221 has an axial through hole at its center, through which the upper roller shaft 225 passes, with its outer wall fitting against the inner wall of the upper roller 221. The lower roller 222 has an axial through hole at its center, through which the lower roller shaft 226 passes, with its outer wall fitting against the inner wall of the lower roller 222. Both the upper and lower roller shafts 225 and 226 are hollow, serving as channels for adhesive transfer and also as the rotational axes of the upper and lower rollers 221 and 222.

[0136] A roller end cap is fixedly connected to the other end face of the upper rubber roller 221 opposite to the upper gear end cap 227a. A sprocket end cap is fixedly connected to the other end face of the lower rubber roller 222 opposite to the lower gear end cap 227b. The sprocket end cap is used to connect to the external second rotary transmission assembly 240.

[0137] The upper gear end cover 227a and the roller end cover rotate relative to the upper row of rubber roller shafts 225, while the lower gear end cover 227b and the sprocket end cover rotate relative to the lower row of rubber roller shafts 226. Specifically, bearings are provided on the upper gear end cover 227a and the roller end cover, and the upper row of rubber roller shafts 225 passes through two bearings. Bearings are provided on the lower gear end cover 227b and the sprocket end cover, and the lower row of rubber roller shafts 226 passes through two bearings.

[0138] Roller seals are provided on the outer wall of the upper roller shaft 225 between the upper gear end cover 227a and the upper roller 221, and between the roller end cover and the upper roller 221. Roller seals are also provided on the outer wall of the lower roller shaft 226 between the lower gear end cover 227b and the lower roller 222, and between the sprocket end cover and the lower roller 222. The roller seals improve the sealing of the component connection and provide effective adsorption force for the upper roller 221 and the lower roller 222.

[0139] The meshing transmission between the upper gear end cover 227a and the lower gear end cover 227b also has the same effect as the meshing transmission technology between the first upper gear disk 137a and the first lower gear disk 137b, which will not be described in detail here.

[0140] The upper roller 221 has a first through hole 221a arranged in a circumferential and axial array on its side wall, and the lower roller 222 has a plurality of second through holes 222a. The diameters of the first through holes 221a and the second through holes 222a can be designed according to the design requirements of the recombination unit. It can be understood that when the diameters of the first through holes 221a and the second through holes 222a are large, the adsorption force at the location of the first through holes 221a and the second through holes 222a is large; when the diameters of the first through holes 221a and the second through holes 222a are small, the adsorption force at the location of the first through holes 221a and the second through holes 222a is small.

[0141] The upper row of rubber rollers 221 has a set of first through holes 221a arranged axially in one row, and similarly, the lower row of rubber rollers 222 has a set of second through holes 222a arranged axially in one row. The distance between adjacent rows of first through holes 221a and / or second through holes 222a can be designed according to the design requirements of the reassembly unit. It can be understood that when the distance between adjacent rows of first through holes 221a and / or second through holes 222a is large, the adsorption force of the rubber roller assembly is small; when the distance between adjacent rows of first through holes 221a and / or second through holes 222a is small, the adsorption force of the rubber roller assembly is large.

[0142] The upper gear end cover 227a and the roller end cover rotate relative to the upper glue-discharging roller shaft 225, while the lower gear end cover 227b and the sprocket end cover rotate relative to the lower glue-discharging roller shaft 226. Specifically, bearings are provided on the upper gear end cover 227a and the roller end cover, and the upper glue-discharging roller shaft 225 passes through two bearings. Bearings are provided on the lower gear end cover 227b and the sprocket end cover, and the lower glue-discharging roller shaft 226 passes through two bearings. The first slot 225b of the upper glue-discharging roller shaft 225 opens downwards, and the second slot 226b of the lower roller shaft 221 opens upwards. During the rotation of the rollers, the two slots always remain in a relative state, both facing the recombining unit containing adhesive. As the upper glue-discharging roller 221 and the lower glue-discharging roller 222 rotate, a portion of the first through hole 221a always corresponds to the first slot 225b, and the second through hole 222a always corresponds to the second slot 226b, thus achieving continuity in the glue discharge process. The external suction device operates through the first suction port 225a and the second suction port 226a, forming an adsorption force on the roller surface to selectively remove some of the adhesive inside the recombination unit. Compared with the traditional direct pressure adhesive removal method, this solution achieves a contact-type and gentle adhesive removal effect through adsorption force, removing and collecting excess adhesive from the surface of the recombination unit after adhesive application, while effectively avoiding material damage and ensuring the uniformity and quality stability of adhesive removal in the recombination unit.

[0143] The second rotary drive device 230 is mounted on the second frame 210 and is used to provide rotary driving force to the second rotary transmission assembly 240. The second rotary drive device 230 is a device capable of outputting rotation, such as a motor, engine, hydraulic motor, or a combination of one of these with a reducer. The second rotary drive device 230 in this embodiment of the invention is consistent with that in the present invention.

[0144] The second rotary transmission assembly 240 connects the second rotary drive device 230 and the glue discharge roller assembly 220. The second rotary transmission assembly 240 is a belt drive or chain gear drive assembly, and is connected to the sprocket end cap on one side of the lower glue discharge roller 222.

[0145] Furthermore, the glue discharge roller assembly 220 also includes tension sleeves 229 respectively disposed at both ends of the upper glue discharge roller shaft 225 and the lower glue discharge roller shaft 226. The tension sleeves 229 are connected to the second slide plate 224, enabling the upper glue discharge roller shaft 225 to be locked or unlocked from the second slide plate 224. The tension sleeves 229 are connected to the third side plate 223a and the fourth side plate 223b, enabling the lower glue discharge roller shaft 226 to be locked or unlocked from the third side plate 223a and the fourth side plate 223b.

[0146] The conveying guide 300 connects the glue dipping and discharging processes and can be a series of guide rollers or a guide plate. In this embodiment, the conveying guide 300 is a guide plate with one fixed end, fixed to the rear end of the glue tank 120 near the discharging device 200, between the upper glue dipping roller 131 and the lower glue dipping roller 132; the other end is a free end, facing between the upper discharging roller 221 and the lower discharging roller 222. The height of the fixed end of the conveying guide 300 is lower than the height of the free end. The fixed end of the guide plate is located in the adhesive in the glue tank 120, and the free end extends towards the space between the upper discharging roller 221 and the lower discharging roller 222. During the conveying process from the glue dipping and recombining unit to the discharging device 200, some adhesive can flow back to the glue tank 120 along the guide plate, preventing excess adhesive from being carried into the discharging device 200 and wasting adhesive.

[0147] The conveyor guide 300 ensures a smooth and seamless transition of the reassembly unit from the dipping device to the discharging device, preventing jamming, misalignment, or deformation. This integrated design significantly improves production efficiency and reduces manual intervention and waiting time between processes.

[0148] The linear drive sources of the first lifting drive assembly 138 and the second lifting drive assembly 228 include, but are not limited to, linear drive components such as cylinders, hydraulic cylinders, and electric actuators, as long as they can provide linear driving force. The output end of the linear drive source is connected to the slide plate to transmit the force. In some specific embodiments, the first frame 133 also includes an upper horizontal plate 133c, the two ends of which are fixed to the top ends of the first side plate 133a and the second side plate 133b, respectively. The specific composition and structure of the first lifting drive assembly 138 will be described in detail below.

[0149] The first lifting drive assembly 138 includes a lifting drive motor 138a, two transmission housings 138b, a worm gear, a lead screw 138c, and a synchronous shaft. The two transmission housings 138b are symmetrically fixed above the upper horizontal plate 133c, and each transmission housing 138b contains a worm gear. The worm gear in one of the transmission housings 138b is directly connected to the output shaft of the lifting drive motor 138a via a coupling, providing power input. Within each transmission housing 138b, the worm gear meshes with the worm and is threaded onto the outside of the lead screw 138c. When the worm gear rotates, it drives the lead screw 138c to move axially up and down, without rotating itself. The top end of the lead screw 138c passes through through holes in both the transmission housing 138b and the upper horizontal plate 133c, forming a sliding fit with the through holes; its bottom end is fixedly connected to the first sliding plate 134, thereby driving the first sliding plate 134 to achieve the lifting function. To achieve synchronous rotation of the worm gears on both sides, this assembly also includes a synchronous shaft 138d. Both ends of the synchronous shaft 138d are connected to the worm gears within the two transmission housings 138b via couplings, ensuring that the worm gears on both sides maintain synchronous rotation. Because the worm wheel and worm gear employ a self-locking threaded engagement, the lead screw 138c automatically maintains its fixed position after being raised or lowered to the designated position, preventing displacement due to external forces. This structural design not only achieves stable lifting and lowering but also ensures the synchronicity of the dual-side drive through the synchronous shaft, while utilizing the self-locking characteristics of the worm wheel and worm gear to guarantee the positional stability of the equipment in a static state.

[0150] The lifting drive motor 138a drives the worm gear to rotate, which in turn drives the worm wheel to rotate, causing the lead screw 138c to move up and down axially, which in turn drives the first slide plate 134 to move up and down. The position of the first slide plate 134 is determined based on the operating speed of the lifting drive motor 138a and the mechanical transmission ratio. The displacement of the first slide plate 134 can be controlled using open-loop control: the lifting drive motor 138a is a stepper motor or a servo motor (without encoder feedback). The position is calculated using the following parameters: motor speed (known), running time (timing), mechanical transmission ratio (worm gear reduction ratio + lead screw lead), and initial position (e.g., zero point). The displacement of the first slide plate 134 is then calculated using the following formula:

[0151] Displacement = Motor speed × Time × Lead screw lead / Transmission ratio.

[0152] The displacement of the first slide plate 134 can also be controlled in a closed loop. The system is equipped with an encoder, grating ruler or limit switch. The displacement of the first slide plate 134 can be directly calibrated by sensor signals without relying on theoretical calculations.

[0153] Furthermore, the first lifting drive assembly 138 also includes a pressure sensor 138e, which is fixed to the top of the first slide plate 134 and fixedly connected to the lead screw 138c. The pressure sensor 138e and the linear drive source are electrically connected to the controller. The controller is a microcontroller or a PLC controller.

[0154] The controller individually controls the lifting drive motor 138a of each dip roller assembly 130. The distance between the upper dip roller 131 and the lower dip roller 132 of the rear dip roller assembly 130 is equal to or less than the distance between the upper dip roller 131 and the lower dip roller 132 of the front dip roller assembly 130, thereby achieving dynamic adjustment of the inter-roller pressure of the dip roller assembly 130. The distance between the upper dip roller 131 and the lower dip roller 132 of the rear dip roller assembly 130 is less than the distance between the upper dip roller 131 and the lower dip roller 132 of the front dip roller assembly 130, maintaining a pressure state of lower pressure in the front and higher pressure in the rear, gradually increasing the pressure to improve the dip coating effect.

[0155] The dip roller assembly 130 also includes a slide plate stroke control mechanism 139. The slide plate stroke control mechanism 139 includes a positioning block 139a disposed on the outside of the first slide plate 134. An upper limit switch 139b and a lower limit switch 139c are disposed on the first side plate 133a or the second side plate 133b. The upper limit switch 139b and the lower limit switch 139c are electrically connected to the controller. When the upper limit switch 139b detects the positioning block 139a, it corresponds to the position where the gears of the first upper gear disk 137a and the first lower gear disk 137b disengage (i.e., the maximum thickness of the board 100 when the reconstituted unit is dipped). This prevents the transmission gears of the first upper gear disk 137a and the first lower gear disk 137b from disengaging and causing the upper dip roller 131 to lose power when the upper dip roller 131 is raised. When the lower limit switch 139c detects the positioning block 139a, the surfaces of the upper dip roller 131 and the lower dip roller 132 are in contact. The height position of the positioning block 139a when the surfaces of the upper dip roller 131 and the lower dip roller 132 are in contact can be regarded as the origin coordinate. At this position, the distance between the upper dip roller 131 and the lower dip roller 132 is 0, which serves as the reference for adjusting the height of the upper dip roller 131. In this embodiment of the invention, the upper limit switch 139b and the lower limit switch 139c are disposed on the first side plate 133a, and the upper limit switch 139b and the lower limit switch 139c are fixedly connected to the first side plate 133a through a bracket.

[0156] The upper limit switch 139b and lower limit switch 139c can be contact-type limit switches, specifically direct-acting switches. The positioning block 139a presses the upper limit switch 139b and lower limit switch 139c to trigger the control action. Alternatively, the upper limit switch 139b and lower limit switch 139c can be non-contact limit switches, including ultrasonic switches and photoelectric switches. Preferably, the upper limit switch 139b and lower limit switch 139c are photoelectric switches, capable of accurately detecting the positioning block 139a's arrival and departure.

[0157] The structure of the second lifting drive assembly 228 is the same as that of the first lifting drive assembly 138 described above, and will not be repeated here.

[0158] In the recombining unit gluing system of the present invention, the dipping device 100, the conveying guide 300, and the discharging device 200 are arranged in a front-to-back manner, forming a continuous and automated "dipping-guiding-discharging" production process. This integrated design significantly improves production efficiency and reduces manual intervention and waiting time between processes. Through multi-stage dipping roller extrusion dipping, multi-stage discharging roller discharging, independent drive control, and process-oriented design, this recombining unit gluing system achieves efficient, uniform, and deep dipping of the recombining unit and precise, controllable discharging, ensuring the quality stability of the final product while improving production efficiency and automation levels.

[0159] In the glue application system of the recombination unit of the present invention, the glue dipping device 100 and the glue discharging device 200 are respectively equipped with independent rotary drive devices (first rotary drive device 140, second rotary drive device 230) and transmission components (first rotary transmission component 150, second rotary transmission component 240). This design allows for independent adjustment and control of the rotational speed / linear velocity of the glue dipping roller and the rotational speed / linear velocity of the glue discharging roller, so that the glue dipping and discharging processes achieve their respective optimal process conditions.

[0160] This invention also provides a process for preparing reconstituted materials, wherein the aforementioned reconstituted unit sizing system of this invention is used in the preparation process. The preparation process includes the following steps:

[0161] S1. Manufacturing of the reconstructed unit: The reconstructed unit consists of wood veneer, bamboo strips, and wood / bamboo bundles;

[0162] Among them, the manufacturing of wood veneer: wood is veneered by a rotary cutting machine to obtain wood veneer with a thickness of 4~8mm and a width of 20~250mm;

[0163] Among them, the manufacturing of bamboo strips involves splitting bamboo tubes into bamboo strips using a bamboo splitting machine;

[0164] Among them, the manufacturing of wood / bamboo bundles: wood veneer or bamboo strips are processed into fibrous wood / bamboo bundles by rolling and disintegrating.

[0165] S2. Moisture content control: The recombinant unit obtained in S1 is placed in a drying device (such as a drum dryer or a mesh belt dryer) and the moisture content of the recombinant unit is controlled to be 5% to 40% to facilitate the penetration of the adhesive and the softening of the fibers during subsequent roller pressing and impregnation.

[0166] S3. Sizing process: The recombinant units with the required moisture content obtained in S2 are transported to the recombinant unit sizing system for sizing treatment.

[0167] The recombining unit passes sequentially through the roller gap formed by the upper dip roller 131 and the lower dip roller 132 in the dip device 100.

[0168] Phenolic resin adhesives can be used, with a solids content controlled at 25%. During the impregnation process in the 100-roller press of the reconstituted unit, the veneer compression rate is controlled at 50% to fully open the fiber channels and promote adhesive penetration. The rolling speed is controlled at 40 m / min.

[0169] After dipping, the recombining unit removes excess adhesive in the adhesive discharge device 200; the rotation speed of the upper discharge roller 221 and the lower discharge roller 222 is greater than or equal to the rotation speed of the upper dip roller 131 and the lower dip roller 132, thereby ensuring the continuity of work and preventing congestion caused by the first speed being faster and the last speed being slower.

[0170] The amount of adhesive applied to the recombining unit should be controlled at 15%~16%.

[0171] S4. Drying treatment: Place the glued recombinant units into a drying equipment and dry them to a moisture content of 10%~12% to meet the process requirements of hot pressing.

[0172] S5. Recombination and Molding: The recombinant units obtained in S4 are laid into a slab, and then hot-pressed to prepare a slab with a density of 0.70~1.40 g / cm³. 3 Reconstituted materials.

[0173] After drying, the adhesive-coated reconstituted units are laid out into a slab according to the preset texture direction and fed into a hot press for hot pressing and curing under the following conditions: hot pressing temperature: 130~150℃; hot pressing pressure: 2.0~8.0 MPa; hot pressing time: 1.0~2.0 min / mm slab thickness. The density of the pressed reconstituted material is 1.15 g / cm³.

[0174] Furthermore, in the S3 gluing process, a 50% veneer compression rate combined with a roller speed of 40 m / min and a glue discharge roller speed allows for a gluing speed of 800-1000 kg / hour for the reassembly unit. The glued reassembly units can then directly enter the dryer for drying. In contrast, the traditional cage-type dipping method requires approximately 300-450 kg of reassembly units per cage, with dipping time of about 30-40 minutes, glue discharge time of about 30-40 minutes, and a balancing period of over 4 hours after discharge. Therefore, this technology significantly increases the gluing speed.

[0175] The reconstituted bamboo preparation process of this invention significantly improves product performance and production efficiency through the synergistic effects of optimized moisture content control, roller-pressed impregnation, dynamic glue discharge, and drying hot pressing. The dimensional stability of the prepared reconstituted bamboo is improved; after a 28-hour cycle test (4 hours of boiling in water + 20 hours of drying at 63℃ + 4 hours of boiling in water), the water absorption thickness swelling rate reaches 4.40%, which is more than 50% lower than that of reconstituted bamboo prepared by the hanging cage impregnation method.

[0176] The recombinant material preparation process of this invention is applicable to low-quality raw materials such as fast-growing timber, bamboo and shrubs. It forms homogeneous high-strength recombinant materials through directional preform hot pressing, thus broadening the industrial application scenarios of biomass resources.

[0177] The terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of that feature.

[0178] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "top", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0179] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A recombinant unit sizing system, characterized in that, It includes a dipping device (100) and a discharging device (200) arranged at the front and rear, and a conveying guide (300) between the two. The impregnation device (100) includes: - First rack (110); - Glue tank (120), mounted on the first frame (110); - Dipping roller assembly (130), having at least three, all dipping roller assemblies (130) are sequentially arranged on the first frame (110) along the conveying direction of the sheet material; the dipping roller assembly (130) includes an upper dipping roller (131) and a lower dipping roller (132) arranged correspondingly above and below. - A first rotary drive device (140), mounted on a first frame (110), is used to provide rotary drive force to a first rotary transmission assembly (150); and - First rotary transmission assembly (150) connects first rotary drive device (140) and dip roller assembly (130). The glue discharge device (200) includes: -Second rack (210); - The glue discharge roller assembly (220) has at least two, and all glue discharge roller assemblies (220) are arranged sequentially on the second frame (210) along the conveying direction of the sheet material; the glue discharge roller assembly (220) includes an upper glue discharge roller (221) and a lower glue discharge roller (222) arranged correspondingly above and below. - A second rotary drive device (230), mounted on the second frame (210), is used to provide rotary drive force to the second rotary transmission assembly (240); and - The second rotary transmission assembly (240) is connected to the second rotary drive device (230) and the glue discharge roller assembly (220). The dispensing roller assembly (220) also includes: - The second frame (223) includes a third side plate (223a) and a fourth side plate (223b) that are fixed to the second frame (210) and are disposed opposite to each other. - The second slide plate (224) has two parts, which are respectively slidably connected to the third side plate (223a) and the fourth side plate (223b); - The upper rubber roller shaft (225) has a hollow structure and a first air intake (225a) is provided at one or both ends. The two ends of the upper rubber roller shaft (225) are fixedly connected to the second slide plate (224). A first slot (225b) communicating with the first air intake (225a) is opened in the middle of the upper rubber roller shaft (225). - The lower row of rubber roller shaft (226) has a hollow structure and a second air intake (226a) is provided at one or both ends. Its two ends are fixed to the third side plate (223a) and the fourth side plate (223b) respectively. A second groove (226b) communicating with the second air intake (226a) is opened in the middle of the lower row of rubber roller shaft (226). The second groove (226b) and the first groove (225b) are arranged opposite to the second groove (226b). - The second gear disk assembly (227) includes an upper gear end cover (227a) fixedly disposed on one side end face of the upper rubber roller (221) and a lower gear end cover (227b) fixedly disposed on one side end face of the lower rubber roller (222), wherein the upper gear end cover (227a) and the lower gear end cover (227b) mesh. - A second lifting drive assembly (228) is disposed on the second frame (223) and connected to the second slide plate (224); the second lifting drive assembly (228) drives the second slide plate (224) to move up and down, thereby causing the upper row of rubber rollers (221) to move toward or away from the lower row of rubber rollers (222); The upper rubber roller (221) is a solid cylinder, coaxially sleeved on the upper rubber roller shaft (225) and rotating relative to it; the side wall of the upper rubber roller (221) is provided with a first through hole (221a) arranged in a circumferential and axial array; when the upper rubber roller (221) rotates, the first groove (225b) communicates with the corresponding first through hole (221a); The lower rubber roller (222) is a solid cylinder, coaxially sleeved on the lower rubber roller shaft (226) and rotating relative to it; the side wall of the lower rubber roller (222) is provided with second through holes (222a) arranged in a circumferential and axial array; when the lower rubber roller (222) rotates, the second groove (226b) communicates with the corresponding second through hole (222a); The upper rubber roller (221) is provided with an axial through hole at the center position. The upper rubber roller shaft (225) passes through the center through hole of the upper rubber roller (221). The outer wall of the upper rubber roller shaft (225) is in contact with the inner wall of the upper rubber roller (221). The lower rubber roller (222) is provided with an axial through hole at the center position. The lower rubber roller shaft (226) passes through the center through hole of the lower rubber roller (222). The outer wall of the lower rubber roller shaft (226) is in contact with the inner wall of the lower rubber roller (222).

2. The recombination unit sizing system according to claim 1, characterized in that, The dip roller assembly (130) also includes: - The first frame (133) includes a first side plate (133a) and a second side plate (133b) that are fixed to the first frame (110) and are disposed opposite to each other. - The first sliding plate (134) has two parts, which are respectively slidably connected to the first side plate (133a) and the second side plate (133b); - The upper dip roller shaft (135) is connected to the first slide plate (134) on the left and right sides respectively through bearings at both ends; the upper dip roller (131) is coaxially fixed on the upper dip roller shaft (135); - The bottom dip roller shaft (136) is connected at both ends to the first side plate (133a) and the second side plate (133b) respectively via bearings; the bottom dip roller (132) is coaxially fixed on the bottom dip roller shaft (136); - The first gear disk assembly (137) includes a first upper gear disk (137a) coaxially fixed on the upper dip roller shaft (135) and located outside the first slide plate (134) and a first lower gear disk (137b) coaxially fixed on the lower dip roller shaft (136) and meshing with the first upper gear disk (137a). - A first lifting drive assembly (138) is disposed on the first frame (133) and connected to the first slide plate (134); the first lifting drive assembly (138) drives the first slide plate (134) to move up and down, thereby causing the upper dip roller (131) to move toward or away from the lower dip roller (132).

3. The recombination unit sizing system according to claim 2, characterized in that, The first rotary drive device (140) is a servo motor (141) and a reducer (142) that is connected to the servo motor (141) via a belt. The first rotary transmission assembly (150) is a belt drive or chain gear drive assembly, which is connected to the reducer (142) and driven by the lower dip roller shaft (136).

4. The recombination unit sizing system according to claim 3, characterized in that, The first rotary transmission assembly (150) includes: - The drive gear (151) is located at the output end of the reducer (142); the drive gear (151) directly meshes with the first lower gear disc (137b) of the two adjacent dip roller assemblies (130); - The first driven wheel (152) and the second driven wheel (153) are disposed at the end of the lower dip roller shaft (136) and are located outside the first lower gear disk (137b); The dip roller assemblies (130) that are not directly meshed by the drive gear (151) achieve linkage transmission through the first driven wheel (152), the second driven wheel (153) at the end of the dip roller shaft (136) of the adjacent assembly and the transmission belt (154) surrounding it.

5. The recombination unit sizing system according to claim 2, characterized in that, The glue tank (120) includes a left side plate (121) and a right side plate (122) that are aligned. The glue tank (120) also includes a roller sealing plate (123) disposed on the left side plate (121) and the right side plate (122); the roller sealing plate (123) has a through hole (123a), and a ring sleeve (123b) is disposed on the side of the through hole (123a); a sealing ring is disposed inside the ring sleeve (123b); The lower dip roller shaft (136) passes through the through hole (123a) of the roller sealing plate (123) and is sealed and connected to the sealing ring inside the ring sleeve (123b); The glue tank (120) also includes a limiting block (124) disposed on the inner side of the left side plate (121) and the right side plate (122), the height of the limiting block (124) being between the upper glue-dipping roller (131) and the lower glue-dipping roller (132).

6. The recombination unit sizing system according to claim 5, characterized in that, The outer sides of the left side plate (121) and right side plate (122) of the glue tank (120) are provided with transition connectors (125); one end of the transition connector (125) is fixedly connected to the corresponding left side plate (121) or right side plate (122), and the other end is fixedly connected to the first frame (133).

7. The recombination unit sizing system according to claim 1, characterized in that, The glue discharge roller assembly (220) also includes expansion sleeves (229) respectively disposed at both ends of the upper glue discharge roller shaft (225) and the lower glue discharge roller shaft (226). The tension sleeve (229) is connected to the second slide plate (224) and can lock or unlock the upper row of rubber roller shafts (225) and the second slide plate (224); The tension sleeve (229) is connected to the third side plate (223a) and the fourth side plate (223b) and can lock or unlock the lower rubber roller shaft (226) with the third side plate (223a) and the fourth side plate (223b).

8. The recombination unit sizing system according to claim 1, characterized in that, The conveying guide (300) is a guide plate with one end being a fixed end, which is fixed to the rear end of the glue pool (120) near the glue discharge device (200). The fixed end is between the upper glue-dipping roller (131) and the lower glue-dipping roller (132). The other end of the conveying guide (300) is a free end, which faces between the upper glue-discharging roller (221) and the lower glue-discharging roller (222). The height of the fixed end of the conveying guide (300) is lower than the height of the free end.

9. A process for preparing reconstituted materials, characterized in that, The reconstituted material preparation process includes the following steps: S1. Manufacturing of the reconstructed unit: The reconstructed unit consists of wood veneer, bamboo strips, and wood / bamboo bundles; Among them, the manufacturing of wood veneer: wood is veneered by a rotary cutting machine to obtain wood veneer with a thickness of 4~8mm and a width of 20~250mm; Among them, the manufacturing of bamboo strips involves splitting bamboo tubes into bamboo strips using a bamboo splitting machine; Among them, the manufacturing of wood / bamboo bundles: wood veneer or bamboo strips are processed into fibrous wood / bamboo bundles by rolling and disintegrating. S2. Moisture content control: Place the recombinant unit obtained in S1 into a drying device and control the moisture content of the recombinant unit to be 5%~40%; S3. Sizing process: The recombinant unit with the required moisture content obtained in S2 is transported to the recombinant unit sizing system of any one of claims 1 to 8 for sizing treatment; The recombination unit passes sequentially through the roller gap formed by the upper dip roller (131) and the lower dip roller (132) in the dip device (100); The solid content in the adhesive is controlled at 25%, the veneer compression rate is controlled at 50% during the impregnation process of the adhesive unit (100), and the rolling speed is controlled at 40 m / min; After dipping, the reconstituted unit removes excess adhesive in the adhesive discharge device (200); the rotational speed of the upper discharge roller (221) and the lower discharge roller (222) is greater than or equal to the rotational speed of the upper dip roller (131) and the lower dip roller (132); The amount of adhesive applied to the recombining unit should be controlled at 15%~16%; S4. Drying treatment: Place the glued reconstituted units into a drying equipment and dry them until the moisture content is 10%~12%; S5. Recombination Molding: The recombinant units obtained in S4 are laid into a slab, and then hot-pressed to prepare a slab with a density of 0.70~1.40 g / cm³. 3 Reconstituted materials.

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