Equipment and process for processing composite structural panels in a molded sheet material

Abstract

This invention relates to the field of composite structure panel processing technology, and provides processing equipment and technology for composite structure panels in compression molding, including: a pre-press, a hot press, a U-shaped adjustable height control assembly mold, a mold hoist, a pad, a feeding panel conveyor, an unloading panel conveyor, and a straw blank layer laying machine; the U-shaped adjustable height control assembly mold includes a U-shaped upper plate, a U-shaped lower plate, a movable baffle device, and a lifting adjustment device. The center of the U-shaped upper plate and the U-shaped lower plate forms a panel laying space. Movable baffle devices are installed in front of, behind, to the left and right of the panel laying space. The lifting adjustment device is installed between the U-shaped upper plate and the U-shaped lower plate. The advantages of this invention are: it reduces one hot pressing process, resulting in a shorter overall hot pressing time; it has a smaller processing allowance, reducing the allowance for edge shearing; thereby reducing the consumption of raw materials and energy, and lowering production costs.

Description

Technical Field

[0001] This invention relates to the field of composite structure panel processing technology, and more specifically to a processing equipment and process for composite structure panels in molded sheet materials. Background Technology

[0002] Wood-bamboo-straw composite plywood is typically made from a veneer layer, a core layer, and a substrate layer. The veneer layer is a composite material made of wood veneer, bamboo mat veneer, and bamboo curtain veneer. The core layer is straw board, and the substrate layer is another layer of wood-bamboo composite material. The wood-bamboo composite material layer has a high elastic modulus and is wear-resistant. The veneers of the wood-bamboo composite material layer are made by first drying wood veneer, bamboo veneer, bamboo curtain veneer, and bamboo mat veneer, and then applying adhesive. The glue-impregnated bamboo curtain and bamboo mat veneers are then dried a second time (glue drying), assembled with the straw board, and finally hot-pressed to form a type of engineered wood panel. Because wood and bamboo have beautiful textures and their properties complement straw board, the plywood exhibits good mechanical properties and a natural, attractive appearance, making it suitable for applications such as flooring and container flooring.

[0003] Hot pressing can involve first hot pressing the core layer of the board, and then hot pressing the core layer with the panel layer a second time. For example, the invention patent document CN100491086C, "Composite Container Floor with Particleboard as Core Material for Structural Use and its Manufacturing Method," describes the manufacturing process of a straw-wood-bamboo composite container floor using strawboard as the core material. The process involves: first, producing or purchasing strawboard from a specialized manufacturer; then, trimming the strawboard to the required length and width, using it as the core layer; selecting or producing a wood-bamboo composite layer; and then, drying the veneers of the wood-bamboo composite layer once, applying adhesive, and then drying again (drying the adhesive); finally, gluing both sides of the trimmed strawboard and assembling it into a blank, followed by hot pressing with the second-dried wood-bamboo composite layer. In short, the straw material undergoes a first hot pressing when being made into strawboard, and the strawboard and wood-bamboo composite layer are then hot-pressed a second time. The drawbacks of this process are as follows: First, the straw board produces a pre-cured layer during production, requiring surface sanding and cutting before packaging and shipping. Second, after arriving at the secondary processing plant where wood and bamboo veneer are applied, the straw board participates in the assembly process. The resulting composite structure board, after hot pressing, also requires cutting, meaning the straw board undergoes two rounds of cutting before the product can be shipped. This process of sanding and trimming wastes a significant amount of material. Third, the straw must first be hot-pressed into straw board, which then undergoes a second hot pressing process after assembly. The combined hot pressing time is long, resulting in a significant waste of heat resources. Fourth, the straw board undergoing the second hot pressing process causes a 10% or greater decrease in its physical and mechanical properties, and it is also highly susceptible to failing the impregnation peeling test in the core layer of the straw board.

[0004] Alternatively, the panel layer and core layer can be hot-pressed in a single process after assembly; for example, the invention patent document CN 106313202B, "A Composite Structural Board with Fiber Unit Layers of Reconstituted Wood and Bamboo," addresses this. While this method of assembling composite structural boards solves the problems of secondary cutting of straw boards, pre-curing layers, and wasted thermal resources, and improves the physical and mechanical properties of the board, the assembled boards, especially bamboo mats, are a composite of flexibility and rigidity. Therefore, significant human and material considerations must be taken into account during assembly to prevent insufficient edge allowances in product processing. Due to the large design processing allowance, the overall waste of straw and bamboo materials remains substantial, exceeding 8%. Furthermore, the thickness of the bamboo veneer varies considerably, often exhibiting a curved surface that is higher in the middle and lower at the edges. This causes wavy cracks in the core layer straw fiber assembly after pre-pressing and hot-pressing, reducing the physical and mechanical properties of the board. Figure 1 As shown, in existing production processes, a right-angle positioning plate is used for manual positioning of the boards, neglecting the other two sides. This easily leads to deformation of the paving material on these two sides, requiring a larger processing allowance to accommodate subsequent edge shearing. This is especially problematic with boards including bamboo mats, which are flexible and more prone to deformation. Figure 2 As shown, the height of the right-angle positioning plate is fixed. When the thickness of the plate in the billet assembly is higher than that of the right-angle positioning plate, manual installation of the plate is prone to inaccurate positioning of the plate, uneven edges of the plate in the billet assembly, and increased shearing of the plate edges in the later stage.

[0005] Therefore, how to reduce the allowance for edge shearing while reducing one hot pressing process and shortening the overall hot pressing time, thereby reducing the consumption of raw materials and energy and lowering production costs, is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a processing equipment and process for composite structural plates in molding sheet materials. By reducing one hot pressing process and shortening the overall hot pressing time, the allowance for edge shearing is reduced, thereby reducing the consumption of raw materials and energy and lowering production costs.

[0007] This invention is achieved as follows: a processing device for composite structural panels in molded sheet materials, comprising: Pre-press, hot press, U-shaped adjustable lifting control billet assembly mold, mold hoist, pad, feeding plate conveyor, discharging plate conveyor and straw blank layer laying machine; The U-shaped adjustable mold includes a U-shaped upper plate, a U-shaped lower plate, a movable baffle device, and a lifting adjustment device. The center of the U-shaped upper plate and the U-shaped lower plate forms a plate laying space. The movable baffle device is installed in front of, behind, to the left and to the right of the plate laying space. The lifting adjustment device is installed between the U-shaped upper plate and the U-shaped lower plate. The mold lifting machine includes an overhead track, a transport trolley, and a lifting base. The transport trolley is installed on the overhead track, and the lifting base is vertically connected to the transport trolley. The lifting base is used for loading and unloading the U-shaped liftable controllable assembly mold. The overhead track is fixedly installed above the feeding plate conveyor and the discharging plate conveyor. The straw blank layer laying machine is installed at the inlet of the feeding plate conveyor, the outlet of the feeding plate conveyor is aligned and connected to the inlet of the pre-compressor, the outlet of the pre-compressor is aligned and connected to the inlet of the discharging plate conveyor, and the outlet of the discharging plate conveyor is connected to the inlet of the hot press. The pad is used to support the U-shaped lower plate and the plates located in the plate laying space. The pad moves sequentially through the feeding plate conveyor, the pre-press, the discharging plate conveyor and the hot press.

[0008] A processing technology for composite structural panels in a molded sheet includes the following steps: S1. Preparation of straw blank layer: Take straw raw material and apply adhesive, then use a dryer to dry it. The dried straw blank forms a straw blank layer. The straw blank layer is pre-pressed to de-air. S2. Setting up a U-shaped adjustable controllable billet assembly mold: A pad is placed on the feeding sheet conveyor, and then a U-shaped adjustable controllable billet assembly mold is placed on the pad. The U-shaped adjustable controllable billet assembly mold includes a U-shaped upper plate, a U-shaped lower plate, a movable baffle device, and a lifting adjustment device. The center of the U-shaped upper plate and the U-shaped lower plate forms a sheet paving space. The movable baffle device is installed in front of, behind, to the left and to the right of the sheet paving space. The lifting adjustment device is installed between the U-shaped upper plate and the U-shaped lower plate. S3, Paving board: The lower wood and bamboo reconstituted material layer, the straw blank layer, and the upper wood and bamboo reconstituted material layer are sequentially placed into the paving board space. The movable baffle device positions the lower wood and bamboo reconstituted material layer, the straw blank layer, and the upper wood and bamboo reconstituted material layer to obtain the composite structure board blank layer. S4. Lifting the U-shaped liftable controllable assembly mold: Use a mold lifting machine to lift the U-shaped liftable controllable assembly mold off the pad, and the composite structure plate blank layer detaches from the U-shaped liftable controllable assembly mold and remains on the pad; S5. The feeding plate conveyor transports the pad and the composite structure plate blank layer to the pre-pressing machine. S6. The pre-pressed composite structure plate blank is moved from the pre-press machine to the discharge plate conveyor. S7. The discharge plate conveyor transports the pre-pressed composite structure plate blank to the hot press.

[0009] The advantages of this invention are as follows: 1. Compared with the prior art where straw boards undergo two hot pressing processes, the production of the straw blank layer in this invention does not involve a hot pressing process. The lower wood-bamboo composite material layer, the straw blank layer, and the upper wood-bamboo composite material layer are assembled and then hot-pressed together. This invention reduces one hot pressing process and shortens the overall hot pressing time. 2. Compared with the prior art where manual positioning of boards using right-angle positioning plates results in a large processing allowance, this invention uses a U-shaped, liftable, and controllable assembly mold to position the straw, bamboo, and wood materials. A movable baffle device positions the four sides of the board, and a lifting adjustment device increases the height of the mold to accommodate the increased thickness during board assembly. This results in a smaller processing allowance for the board, reduces the allowance for edge shearing, reduces the consumption of raw materials and energy, and lowers production costs.

[0010] 2. After the composite structure plate blank layer is obtained from the U-shaped liftable control blank assembly mold, the U-shaped liftable control blank assembly mold and the composite structure plate blank layer can be easily separated using a mold hoist. The composite structure plate blank layer and the pad are then transported into the pre-pressing machine. Alternatively, the U-shaped liftable control blank assembly mold, the composite structure blank layer and the pad can all be transported into the pre-pressing machine, which helps the composite structure blank layer to enter the pre-pressing machine neatly. With the help of the outer and inner pressure plates, the U-shaped liftable control blank assembly mold and the composite structure plate blank layer are separated during the pre-pressing process.

[0011] 3. The height of the adjustable mold for assembling blanks changes automatically with the height of the assembly blanks, ensuring that the composite structure board blank layer is lower than the upper plate of the mold. The movable baffle device can also position the assembly blanks, which helps to obtain a neatly laid composite structure board blank layer.

[0012] 4. The U-shaped upper plate of the adjustable mold rises rapidly while the auxiliary baffle in the sleeve falls quickly, effectively preventing people's hands and other materials from entering the board laying space, thus improving the neatness and stability of the board laying. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of a bamboo curtain that is manually positioned using a right-angle positioning plate in the background technology.

[0015] Figure 2 This is a schematic diagram illustrating how, in the background art, the thickness of the sheet metal used for billet assembly exceeds that of the right-angle positioning plate, resulting in uneven edges on the sheet metal.

[0016] Figure 3 This is a schematic diagram of the processing equipment for the composite structure plate in the molding sheet of the present invention.

[0017] Figure 4 This is a schematic plan view of the structure of the U-shaped adjustable lifting control assembly mold in this invention.

[0018] Figure 5 yes Figure 4 A cross-sectional view along the AA direction.

[0019] Figure 6 yes Figure 4 Cross-sectional view along the BB direction.

[0020] Figure 7 This is a schematic diagram of the four sides of the composite structure plate blank layer positioned by the movable baffle device in this invention.

[0021] Figure 8 This is a schematic diagram of the top positioning baffle and the top support entering the inner U-shaped groove and the outer U-shaped groove, respectively, in this invention.

[0022] Figure 9 This is a schematic diagram showing the positions of the bottom positioning baffle, bottom support, bottom guide plate, bottom slide rail, and mold electromagnet on the U-shaped lower plate in this invention.

[0023] Figure 10 This is a schematic diagram of the lower wood-bamboo composite material layer located in the board paving space in this invention.

[0024] Figure 11 This is a schematic diagram of the straw blank layer being placed in the board paving space in this invention.

[0025] Figure 12 This is a schematic diagram of the upper wood-bamboo composite material layer located in the board paving space in this invention.

[0026] Figure 13 This is a schematic diagram showing the location of the vertical ventilation holes of the lifting base in this invention.

[0027] Figure 14 This is a top view of the lifting base in this invention.

[0028] Figure 15 This is a schematic diagram of the lifting electromagnet of the lifting base in this invention attracting the U-shaped upper plate.

[0029] Figure 16 This is a schematic diagram of the mold lifting machine in this invention lifting the U-shaped adjustable mold assembly mold off the pad.

[0030] Figure 17 This is a schematic diagram of the bottom support plate and the main pressure plate pressing down on the composite structure plate blank layer in this invention.

[0031] Figure 18 This is a schematic diagram showing the positions of the scraper suction device and the pad plate inside the pre-press machine in this invention.

[0032] Figure 19 This is a schematic diagram of the U-shaped adjustable lifting control mold entering the pre-pressing machine in this invention.

[0033] Figure 20 This is a schematic diagram of the height adjustment of the U-shaped adjustable mold for the composite structure plate blank layer in this invention, which allows the blank layer to emerge.

[0034] Figure 21 This is a schematic diagram of the outer pressure plate downwardly holding the U-shaped upper plate in this invention.

[0035] Figure 22 This is a schematic diagram of the present invention in which the inner pressure plate abuts against the composite structure plate blank layer, and the outer pressure plate pulls up the U-shaped adjustable mold for blank assembly.

[0036] Figure 23 This is a schematic diagram of the mold lifting machine in this invention picking up the U-shaped liftable assembly mold from the material conveyor.

[0037] Reference numerals: Pre-press 1; scraper 111; suction port 112; dust suction port 113; frame 12; main pressure plate 13; sheet metal transfer device 14; lifting port 141; outer pressure plate 15; pre-press electromagnet 151; inner pressure plate 16; base 17; hot press 2; 3. Rectangular adjustable controllable blank assembly mold; Rectangular upper platen 31; Top slide rail 311; Rectangular lower platen 32; Bottom slide rail 321; First discharge port 322; Movable baffle device 33; Top positioning baffle 331; Positioning cavity 3311; Positioning air hole 3312; Top guide plate 3313; Top connecting rod 3314; Bottom positioning baffle 332; Inner U-shaped groove 3321; Vent hole 3322; Bottom guide plate 3323; Bottom connecting rod 3324; Second Discharge port 3325; Top push rod 333; Bottom push rod 334; Top movement control component 335; Bottom movement control component 336; Top support 337; Bottom support 338; Peripheral U-shaped groove 3381; Auxiliary baffle 339; Auxiliary limit plate 3391; Auxiliary air hole 3392; Auxiliary cavity 3393; Auxiliary support 3310; Solenoid valve 3320; Sheet metal laying space 34; Lifting and adjusting device 35; Mold electromagnet 36; Raw material detection sensor 37; 4. Mold hoist; 41. Aerial track; 42. Transport trolley; 43. Lifting seat; 431. Vertical expansion joint; 432. Lifting electromagnet; 433. Boss; 4331. Vertical ventilation hole; 4332. Buffer pad; 4333. Lifting rope; 5. Pad plate; 6. Feeding board conveyor; 7. Discharging board conveyor; 8. Straw blank layer laying machine; 9. Composite structure blank layer; 91. Lower wood and bamboo reconstituted material layer; 92. Straw blank layer; 93. Upper wood and bamboo reconstituted material layer; 10. Right angle positioning plate; 101. Board. Detailed Implementation

[0038] This invention provides a processing equipment and process for composite structural boards in molded sheet materials, which overcomes the disadvantages of the prior art where straw boards undergo two hot pressing processes, resulting in a long overall hot pressing time and wasted heat resources, as well as the disadvantages of the prior art where manual positioning of the boards using right-angle positioning plates causes a large processing allowance. This achieves the technical effect of reducing the consumption of raw materials and energy, and lowering production costs.

[0039] The overall concept of the technical solution of this invention is as follows: The composite structural board includes a wood-bamboo reconstituted material layer composed of at least one veneer. Each veneer of the wood-bamboo reconstituted material layer is sequentially dried once, adhesive is applied, and then dried a second time for later use. It also includes a straw blank layer. Selected and qualified straw raw materials are applied with adhesive and then dried using a dryer. The dried straw blank layer is formed by assembling the straw blank layer and pre-pressing to remove air. The veneers of the wood-bamboo reconstituted material layer that have been impregnated with adhesive and dried a second time are assembled into a wood-bamboo reconstituted material layer and then bonded together with the pre-pressed and degassed straw blank layer. The assembled board blank is then sequentially pre-pressed, hot-pressed, cooled, sanded, and cut to obtain the composite structural board.

[0040] The composite structural board manufacturing process eliminates one hot-pressing step, resulting in a shorter overall hot-pressing time, reduced energy consumption, and lower production costs. It eliminates the need to pre-process straw materials into straw boards, significantly saving labor costs and the consumption of adhesives and raw materials. It also avoids the impact of the straw pre-cured layer on the finished product's adhesive structure and the sanding process required due to the pre-cured layer, further reducing raw material consumption and saving on sanding input and energy consumption. This allows for full utilization of raw materials and a substantial reduction in manufacturing costs. Simultaneously, some straw fibers are pressed into the gaps of the wood-bamboo composite layer, improving the board's physical and mechanical properties.

[0041] The straw blank layer and the wood-bamboo composite material layer are laid in a U-shaped, liftable, controllable assembly mold. The lower wood-bamboo composite material layer, the straw blank layer, and the upper wood-bamboo composite material layer are sequentially placed into the board laying space. A movable baffle device is used to position the four sides of the board. The lifting and adjusting device increases the height of the mold to cope with the increase in thickness during board assembly. The boards are laid more neatly, with less processing allowance, reducing the allowance for cutting the board edges and reducing the consumption of raw materials.

[0042] After the panels are laid out, a composite structural panel blank layer is obtained. The U-shaped lifting control mold separates from the composite structural panel blank layer. The composite structural panel blank layer is transported to the pre-press machine for pre-pressing. The pre-pressed composite structural panel is then transported to the hot press machine for hot pressing, followed by the cooling process and sanding process. Finally, the edges of the composite structural panel are cut in the cutting process to obtain the finished composite structural panel.

[0043] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0044] See Figures 1 to 18 Embodiment 1 of the present invention.

[0045] A processing device for composite structural panels in molded sheet materials, comprising: 1. Pre-compressor; 2. Hot press; 3. Rectangular lifting control mold; 4. Mold hoist; 5. Pad plate; 6. Feeding board conveyor; 7. Discharging board conveyor; and 8. Straw blank layer laying machine. The U-shaped adjustable mold 3 includes a U-shaped upper plate 31, a U-shaped lower plate 32, a movable baffle device 33, and a lifting adjustment device 35. The center of the U-shaped upper plate 31 and the U-shaped lower plate 32 forms a plate laying space 34. The movable baffle device 33 is installed in front of, behind, to the left and to the right of the plate laying space 34. The lifting adjustment device 35 is installed between the U-shaped upper plate 31 and the U-shaped lower plate 32. The mold lifting machine 4 includes an overhead track 41, a transport trolley 42, and a lifting seat 43. The transport trolley 42 is installed on the overhead track 41, and the lifting seat 43 is vertically connected to the transport trolley 42. The lifting seat 43 is used for loading and unloading the U-shaped liftable controllable assembly mold 3. The overhead track 41 is fixedly installed above the feeding plate conveyor 6 and the discharging plate conveyor 7. The straw blank layer laying machine 8 is installed at the inlet of the feeding plate conveyor 6. The outlet of the feeding plate conveyor 6 is aligned and connected to the inlet of the pre-compressor 1. The outlet of the pre-compressor 1 is aligned and connected to the inlet of the discharging plate conveyor 7. The outlet of the discharging plate conveyor 7 is connected to the inlet of the hot press 2. The pad 5 is used to support the U-shaped lower plate 32 and the plates located in the plate laying space 34. The pad 5 moves sequentially through the feeding plate conveyor 6, the pre-press 1, the discharging plate conveyor 7, and the hot press 2.

[0046] In this embodiment, the lower layer of wood and bamboo composite material 91, the straw blank layer 92, and the upper layer of wood and bamboo composite material 93 are sequentially placed in the board laying space 34; the movable baffle device 33 simultaneously positions the boards located in the board laying space 34, effectively preventing board deformation and helping to lay the boards neatly; during the process of laying the assembled boards, the lifting and adjusting device increases the height of the mold to prevent the assembled boards from exceeding the height of the mold.

[0047] The lifting base 43 of the mold hoist 4 can be loaded and cooperated with the U-shaped liftable controllable assembly mold 3. When the movable baffle device 33 releases the composite structure plate blank layer 9, the U-shaped liftable controllable assembly mold 3 is lifted and thus detached from the composite structure plate blank layer 9. The transport trolley 42 moves the lifting base 43 and the U-shaped liftable controllable assembly mold 3 together. The lifting base 43 of the mold hoist 4 can also unload the U-shaped liftable controllable assembly mold 3 and place it on the transport machine or the pad 5. The pad 5 is preferably a stainless steel pad 5.

[0048] The straw blank layer laying machine 8 is a telescopic belt conveyor of the prior art; the straw blank layer 92 is prepared on the production site: straw raw materials are taken and adhesive is applied, and then a dryer is used for drying process. The dried straw blanks form the straw blank layer 92, and the straw blank layer 92 is pre-compressed and de-vented; the straw blank layer laying machine 8 is used to lay the straw blank layer 92 into the board laying space 34.

[0049] The pre-compression pressure of the straw blank layer 92 is 40-80 kg / cm². 2In the preparation of the straw blank layer 92, the adhesive applied to the straw is an isocyanate adhesive, and the weight ratio of straw to isocyanate adhesive is 10:2-3. The straw is dried in a dryer to a moisture content of 8%-10%.

[0050] Pre-treatment of each veneer in the wood-bamboo reconstituted material layer: Each veneer in the wood-bamboo reconstituted material layer undergoes a first drying, application of adhesive, and a second drying process, and is then ready for use. The veneers in the wood-bamboo reconstituted material layer are at least one of wood veneer, bamboo veneer, bamboo curtain, or bamboo mat. The adhesive applied to the veneers of the wood-bamboo reconstituted material layer is phenolic resin. When the veneers of the wood-bamboo reconstituted material layer are wood veneer or bamboo veneer, the amount of adhesive applied to one side of the veneer when applying phenolic resin is 170g / m². 2 -190g / m 2 When the veneer of the wood-bamboo reconstituted material layer is bamboo mat, the impregnation amount of phenolic resin is 150g / m² - 160g / m². 2 When the veneer of the wood-bamboo reconstituted material layer is bamboo curtain, the impregnation amount of phenolic resin is 70g / m². 2 -90g / m 2 The moisture content of the wood veneer, bamboo veneer, and bamboo curtain is 6-8%, while the moisture content of the bamboo mat is 8-10%.

[0051] The pre-laid composite structural panel blanks first enter the pre-press 1, then the hot press 2. The hot press 2 closes rapidly to the highest pressure. The hot pressing temperature is 130℃~145℃, and the maximum pressure is 40-50kg / cm2. The hot pressing time for a 28mm thick container floor panel blank is 50 minutes~80 minutes; the hot pressing time per millimeter of blank is 107s~172s. The thickness control feature of the hot press 2 is that the thickness control is achieved by a hydraulic position control drive device or an electronic position control device, or by a thickness gauge directly mounted on the upper hot press plate.

[0052] The composite structural board blank layer 9 also includes decorative paper, which is located on the surface of the composite structural board blank layer 9. The laying sequence of the wood and bamboo reconstituted material layer and the straw blank layer is arranged according to actual needs.

[0053] Compared to the prior art where straw boards undergo two hot-pressing processes, the straw blank layer 92 of this invention does not require a hot-pressing process. It is hot-pressed together after the lower wood-bamboo composite material layer 91, the straw blank layer 92, and the upper wood-bamboo composite material layer 93 are assembled. This invention reduces one hot-pressing process and shortens the overall hot-pressing time. Compared to the prior art where manual positioning of the boards using right-angle positioning plates results in a large processing allowance, this invention uses a U-shaped, liftable assembly mold 3 to position the straw, bamboo, and wood materials. A movable baffle device 33 positions the four sides of the board, and a lifting adjustment device 35 increases the mold height to accommodate the increased thickness during board assembly. This results in a smaller processing allowance and reduces the amount of material to be cut at the edges. This reduces the consumption of raw materials and energy, lowering production costs.

[0054] Furthermore, it also includes: a wood veneer laying machine, a bamboo veneer laying machine, a bamboo curtain laying machine, and a bamboo mat laying machine installed at the entrance of the feeding board conveyor 6; In the board paving space 34, the lower wood and bamboo reconstituted material layer 91, the straw blank layer 92, and the upper wood and bamboo reconstituted material layer 93 are placed in sequence. The veneers of the lower wood-bamboo composite material layer 91 and the upper wood-bamboo composite material layer 93 are at least one of wood veneer, bamboo veneer, bamboo curtain or bamboo mat.

[0055] In this embodiment, wood veneer, bamboo veneer, bamboo curtain, and bamboo mat can be laid into the board paving space 34 in the order required by the process using an existing paving machine, or they can be laid into the board paving space 34 manually by workers in the order required by the process.

[0056] Furthermore, the pre-press 1 includes a scraper suction device, which is slidably connected to the outlet of the pre-press 1. The scraper suction device has a scraper 111 and a suction port 112 arranged front and rear. The scraper 111 is used to scrape off the debris from the edge of the pad 5, and the suction port 112 is used to suck up the scraped debris. The beneficial effect of this technical solution is that after the composite structure plate blank layer 9 is pre-pressed, it is removed from the pre-press 1. When the pad 5 passes the outlet of the pre-press 1, the scraper suction device moves downward, the scraper 111 scrapes off the debris on the side of the pad 5, and the suction port 112 sucks up the scraped debris, which helps to clean the pad 5.

[0057] Specifically, the pre-pressing machine 1 is equipped with a row of dust suction ports 113 at both the inlet and outlet, and scraper suction devices are installed at both ends of the outlet. After the pre-pressing of the composite structure plate blank layer 9 is completed, the two rows of dust suction ports 113 move down onto the stainless steel pad 5 with the help of the existing control mechanism to suck up the debris at both ends of the pad 5. Then the two rows of dust suction ports 113 are lifted up. During the process of the pre-pressed composite structure plate blank layer 9 being transported from the pre-pressing machine 1 to the discharge plate conveyor 7, the scrapers 111 located on the left and right sides gently scrape off the debris on the pad 5, and the suction ports 112 suck up the debris on the left and right sides of the pad 5 to ensure the cleanliness of the pad 5.

[0058] Furthermore, the movable baffle device 33 includes a top positioning baffle 331, a top push rod 333, a top movable control component 335, and a top support 337. The top support 337 is fixedly mounted on the U-shaped upper plate 31 and is located on the periphery. The top positioning baffle 331 is slidably mounted on the U-shaped upper plate 31 and is located on the inner periphery. The top movable control component 335 is mounted on the top support 337. The telescopic end of the top movable control component 335 is connected to the top positioning baffle 331 through the top push rod 333. The movable baffle device 33 further includes a bottom positioning baffle 332, a bottom push rod 334, a bottom movable component, and a bottom support 338. The bottom support 338 is fixedly installed on the U-shaped lower plate 32 and is located on the periphery. The bottom positioning baffle 332 is slidably installed on the U-shaped lower plate 32 and is located on the inner periphery. The bottom movable control component 336 is installed on the bottom support 338. The telescopic end of the bottom movable control component 336 is connected to the bottom positioning baffle 332 through the bottom push rod 334. The bottom positioning baffle 332 has an inner U-shaped groove 3321, and the top positioning baffle 331 can enter and exit the inner U-shaped groove 3321. The bottom support 338 has an outer U-shaped groove 3381, and the top support 337 can enter and exit the outer U-shaped groove 3381. The beneficial effect of this technical solution is that the U-shaped upper platen 31 and the top positioning baffle 331 of the U-shaped adjustable control mold 3 can be raised and lowered, automatically changing with the height of the assembled sheet material, ensuring that the assembled sheet material is lower than the U-shaped upper platen 31. The top positioning baffle 331 can position the assembled material, which helps to obtain a neatly laid composite structure panel blank layer 9. The movable control component moves the positioning baffles inward and outward through a push rod. The positioning baffles in the four directions of the sheet material laying space 34 work simultaneously to position the sheet material within the sheet material laying space 34. The movable control component is a micro-motion cylinder or an electric telescopic rod.

[0059] Vent holes 3322 are provided on the side walls of the inner U-shaped groove 3321 and the outer U-shaped groove 3381. The holes are located near the upper end. The main function is to prevent the closure between the inner U-shaped groove 3321 and the top positioning baffle 331 and the closure between the outer U-shaped groove and the top support 337 from being too tight when closing, so that they cannot be quickly opened, thus improving the working speed and efficiency.

[0060] The square-ring lower flat plate 32 is provided with a first discharge port 322, and the inner U-shaped groove 3321 is provided with a second discharge port 3325. When the square-ring liftable and controllable blank-assembling die 3 is lifted off the pre-pressing line, the waste in the inner U-shaped groove can fall out of the U-shaped groove, which is convenient for the maintenance of the equipment.

[0061] The lifting and adjusting device 35 is a scissor lift. The top positioning baffle 331 has a top guide plate 3313, the square-ring upper flat plate 31 has a top slide rail 311, the top guide plate 3313 is slidably connected to the top slide rail 311, and is also fixedly connected to the top push rod 333 through a top connecting rod 3314. The bottom positioning baffle 332 has a bottom guide plate 3323, the square-ring lower flat plate 32 has a bottom slide rail 321, the bottom guide plate 3323 is slidably connected to the bottom slide rail 321, and is also fixedly connected to the bottom push rod 334 through a bottom connecting rod 3324. The movable control component can make the positioning baffle move forward and backward, and perform a small displacement control of 2-5 mm, which is used to ensure the consistent vertical line of the edges of the paved plates. The first discharge port 322 and the second discharge port 3325 overlap during the lifting process of the square-ring liftable and controllable blank-assembling die 3, and a part of the scraps in the blank-assembling process, such as straw scraps, can fall, preventing the continuous accumulation of scraps in the inner U-shaped groove 3321.

[0062] The dimensions of the square-ring liftable and controllable blank-assembling die 3 are: width 100-130 cm, length 170-650 cm. The lowest lifting height is 4 cm, and the highest is 23 cm.

[0063] There are at least four lifting and adjusting devices 35, which are respectively located in the front, rear, left and right of the plate paving space 34, and are used to control the lifting height of the square-ring upper flat plate 31.

[0064] Furthermore, the movable baffle device 还包括辅助挡板339,所述辅助挡板339与所述顶部定位挡板331镶套连接; The top positioning baffle 331 has a positioning cavity 3311, a positioning sliding hole at the bottom, and a positioning air hole 3312 on the side wall. The top of the auxiliary baffle 339 has an auxiliary limiting plate 3391, and the bottom has an auxiliary sliding hole. The body of the auxiliary baffle 339 is slidably connected to the positioning sliding hole. The auxiliary limiting plate 3391 is located in the positioning cavity 3311 and cannot pass through the positioning sliding hole. The auxiliary limiting plate 3391 has an auxiliary air hole 3392. The auxiliary baffle 339 has an auxiliary cavity 3393, and the auxiliary air hole 3392 communicates with the auxiliary cavity 3393. Multiple auxiliary baffles 339 are arranged sequentially from top to bottom, with their sizes decreasing sequentially. Adjacent auxiliary baffles 339 are nested together. The beneficial effect of this technical solution is that during the ascent of the U-shaped upper platen 31 of the U-shaped adjustable billet mold 3, the nested auxiliary baffles 339 fall rapidly under their own weight, effectively preventing people's hands and other materials from entering the U-shaped adjustable billet mold 3. The board material can only be placed in the board laying space 34, improving the neatness and stability of the board laying and reducing the degree of injury to people's hands.

[0065] The movable baffle device 33 further includes an auxiliary support 3310, which is fitted into the top support 337. Multiple top supports 337 are arranged sequentially from top to bottom, with their sizes decreasing sequentially. Adjacent auxiliary supports 3310 are fitted together. The structure of the auxiliary support 3310 and the top support 337 is similar to that of the auxiliary baffle 339 and the top positioning baffle 331. The movable baffle device 33 also includes a solenoid valve 3320, which is installed in the air hole on the side wall of the auxiliary support 3310. The solenoid valve 3320 controls compressed air to enter the cavity of the auxiliary support 3310, facilitating the rapid descent of the auxiliary support 3310.

[0066] The U-shaped adjustable mold assembly mold 3 also includes a mold electromagnet 36, which is fixedly mounted on the U-shaped lower platen 32. When the mold electromagnet 36 is energized, it attracts the pad 5, thus keeping the U-shaped lower platen 32 tightly against the pad 5, effectively preventing the U-shaped adjustable mold assembly mold 3 from shaking during the sheet material laying process. When the mold electromagnet 36 is de-energized, the U-shaped lower platen 32 releases the pad 5, and the U-shaped adjustable mold assembly mold 3 can be separated from the pad 5.

[0067] A raw material detection sensor 37 is installed at the upper end of the top positioning baffle 331. The raw material detection sensor 37 is electrically connected to the lifting adjustment device 35. The raw material detection sensor 37 is preferably a photoelectric sensor. When the raw material detection sensor 37 detects the board material, the lifting adjustment device 35 moves the U-shaped upper plate 31 upward. When no board material is detected, the lifting adjustment device 35 stops rising, so that the U-shaped liftable controllable assembly mold 3 automatically rises as the thickness of the paved board material increases.

[0068] Furthermore, the lifting base 43 has a vertical telescopic member 431, a boss 433, and a lifting rope 4333. The boss 433 is located at the center of the lifting base 43, and multiple vertical telescopic members 431 are arranged around the boss 433. The telescopic end of the vertical telescopic member 431 has a lifting electromagnet 432, which is used to attract the U-shaped upper plate 31. The boss 433 can enter the plate laying space 34, and the lifting rope 4333 is connected to the winder of the transport trolley 42. The beneficial effect of this technical solution is that the lifting base 43 can easily load and unload the U-shaped liftable controllable assembly mold 3, and can easily separate the U-shaped liftable controllable assembly mold 3 from the composite structure plate blank layer 9. The vertical telescopic joint 431 is initially in the extended state, the lifting base 43 descends, and the lifting electromagnet 432 is energized to generate magnetic force, attracting the U-shaped upper plate 31. Then, the vertical telescopic joint 431 retracts, and the U-shaped adjustable control blanking mold 3 rises. The boss 433 enters the plate laying space 34 and presses downwards against the composite structure plate blank layer 9, thereby separating the U-shaped adjustable control blanking mold 3 from the composite structure plate blank layer 9. The lifting base 43 rises, taking the U-shaped adjustable control blanking mold 3 with it. When the lifting electromagnet 432 is de-energized, the lifting base 43 releases the U-shaped upper plate 31. The vertical telescopic joint 431 is a cylinder or a hydraulic cylinder.

[0069] The boss 433 has vertical ventilation holes 4331, which facilitates the compression and separation of the boss 433 from the composite structure plate blank layer 9. A buffer pad 4332 is fixedly provided on the lower surface of the boss 433, which helps to protect the composite structure plate blank layer 9.

[0070] A processing technology for composite structural panels in a molded sheet includes the following steps: S1. Preparation of straw blank layer 92: Take straw raw material and apply adhesive, then use a dryer to dry it. The dried straw blank forms straw blank layer 92. The straw blank layer 92 is pre-pressed to de-air. S2. Setting up a U-shaped adjustable and controllable billet assembly mold 3: Place a pad 5 on the feeding sheet conveyor 6, and then place a U-shaped adjustable and controllable billet assembly mold 3 on the pad 5. The U-shaped adjustable and controllable billet assembly mold 3 includes a U-shaped upper plate 31, a U-shaped lower plate 32, a movable baffle device 33, and a lifting adjustment device 35. The center of the U-shaped upper plate 31 and the U-shaped lower plate 32 forms a sheet material laying space 34. The movable baffle device 33 is installed in front of, behind, to the left and to the right of the sheet material laying space 34. The lifting adjustment device 35 is installed between the U-shaped upper plate 31 and the U-shaped lower plate 32.

[0071] Specifically, the movable baffle device 33 includes a top positioning baffle 331 and a bottom positioning baffle 332. The top positioning baffle 331 is slidably connected to the U-shaped upper plate 31, and the bottom positioning baffle 332 is slidably connected to the U-shaped lower plate 32. The bottom positioning baffle 332 has an inner U-shaped groove 3321. S3, Paving board: The lower wood and bamboo composite material layer 91, the straw blank layer 92, and the upper wood and bamboo composite material layer 93 are sequentially placed into the paving board space 34. The movable baffle device 33 positions the lower wood and bamboo composite material layer 91, the straw blank layer 92, and the upper wood and bamboo composite material layer 93 to obtain the composite structure board blank layer 9. Specifically, the lower layer of wood and bamboo composite material 91 is first placed into the board paving space 34, and the top positioning baffle 331 is located in the inner U-shaped groove 3321; Next, a straw blank layer 92 is placed into the board laying space 34, and then the U-shaped upper plate 31 moves upward, so that the top positioning baffle 331 is separated from the inner U-shaped groove 3321. The top positioning baffle 331 moves towards the board laying space 34, and the edge sidewall of the top positioning baffle 331 is aligned with the edge sidewall of the bottom positioning baffle 332. Next, the upper wood and bamboo composite material layer 93 is placed into the board laying space 34. As the thickness of the board laying increases, the U-shaped upper plate 31 and the top positioning baffle 331 automatically increase in height, so that the upper wood and bamboo composite material layer 93 is lower than the U-shaped upper plate 31.

[0072] S4. Lifting the U-shaped liftable controllable assembly mold 3: Use the mold lifting machine 4 to lift the U-shaped liftable controllable assembly mold 3 away from the pad 5. The composite structure plate blank layer 9 is separated from the U-shaped liftable controllable assembly mold 3 and remains on the pad 5. S5. The feeding plate conveyor 6 transports the pad 5 and the composite structure plate blank layer 9 to the pre-pressing machine 1. S6. The pre-pressed composite structure plate blank is moved from the pre-press machine 1 to the discharge plate conveyor 7; S7. The discharge plate conveyor 7 transports the pre-pressed composite structure plate blank to the hot press.

[0073] The beneficial effects of the overall technical solution of this invention are as follows: 1. It solves the problem of large processing allowance in the design of straw and bamboo composite materials, reducing the waste of straw and bamboo materials from over 8% to below 4%; it also avoids the decline in the physical and mechanical properties of straw boards after secondary hot pressing, which could easily lead to unqualified impregnation and peeling indicators in the core layer straw board products. 2. For a production line with an annual output of 10,000 cubic meters, it can reduce the consumption of energy, raw materials, and labor by 400 cubic meters of materials per year. Based on an estimated cost of 4,000 yuan / cubic meter, this translates to an annual increase in revenue and cost savings of 1.6 million yuan. 3. The U-shaped adjustable height control assembly mold 3 has a minimum height of 4cm and a maximum height of 23cm, which changes with the height of the assembly material. This facilitates material placement by employees and avoids the impact on manual material laying that occurs with other molds. The U-shaped adjustable height control assembly mold 3 can be used not only for assembling straw and bamboo composite materials but also for the production of conventional bamboo and wood composite container bottom plates and composite panels. When producing thinner boards with a thickness of less than 28mm, the lifting position of the U-shaped adjustable control mold 3 should be placed in front of the pre-pressing machine. 4. In the preparation process of composite structural boards, one hot pressing process is reduced, resulting in a shorter overall hot pressing time, which reduces energy consumption and lowers production costs. It eliminates the need to first process straw into straw shreds boards, thus saving a significant amount of labor costs and the consumption of adhesives and raw materials. It also avoids the impact of the straw pre-cured layer on the adhesive structure of the finished product and the sanding process required due to the presence of the pre-cured layer, further reducing raw material consumption and saving the input and energy consumption required for the sanding process. This allows for full utilization of raw materials and significantly reduces manufacturing costs. At the same time, some straw fibers are pressed into the gaps of the wood and bamboo composite material layer, improving the physical and mechanical properties of the board.

[0074] See Figures 19 to 23 Embodiment 2 of the present invention.

[0075] The pre-compression machine 1 includes a frame 12, a main pressure plate 13, a sheet material transfer device 14, an outer pressure plate 15, and an inner pressure plate 16. The sheet material transfer device 14 is fixedly installed on the frame 12. The main pressure plate 13, the outer pressure plate 15, and the inner pressure plate 16 are all located above the sheet material transfer device 14. The inner pressure plate 16 is adjacent to the main pressure plate 13 and can enter the sheet material laying space 34. The outer pressure plate 15 is adjacent to the inner pressure plate 16. A pre-compression electromagnet 151 is installed on the outer pressure plate 15. The pre-compression electromagnet 151 is used to attract the U-shaped upper plate 31. The beneficial effect of this technical solution is that by transporting the U-shaped liftable controllable assembly mold 3, the composite structure plate blank layer 9 and the pad 5 into the pre-pressing machine 1, it helps the composite structure plate blank layer 9 to enter the pre-pressing machine 1 neatly. With the cooperation of the outer pressure plate 15 and the inner pressure plate 16, the U-shaped liftable controllable assembly mold 3 and the composite structure plate blank layer 9 are separated during the pre-pressing process.

[0076] The inlet of the sheet metal transfer device 14 is aligned and connected to the outlet of the feeding sheet metal conveyor 6, and the outlet of the sheet metal transfer device 14 is aligned and connected to the inlet of the discharging sheet metal conveyor 7. The sheet metal transfer device 14 has a lifting port 141. The pre-pressing machine 1 also includes a base 17, which is slidably connected to the frame 12. The base 17 can pass through the lifting port 141 and is used to lift the pad 5 from the sheet metal transfer device 14. After the pad 5 is lifted, the main pressure plate 13 of the pre-pressing machine 1 moves downward to press the composite structure board blank layer 9. The sheet metal transfer device 14, the feeding sheet metal conveyor 6, and the discharging sheet metal conveyor 7 are all roller conveyors. Other undescribed parts refer to Embodiment 1 of the present invention.

[0077] The processing technology of the composite structural plate in the molding sheet of this embodiment includes the following steps: S1. Preparation of straw blank layer 92: Take straw raw material and apply adhesive, then use a dryer to dry it. The dried straw blank forms straw blank layer 92. The straw blank layer 92 is pre-pressed to de-air. S2. Setting up a U-shaped adjustable and controllable billet assembly mold 3: Place a pad 5 on the feeding sheet conveyor 6, and then place a U-shaped adjustable and controllable billet assembly mold 3 on the pad 5. The U-shaped adjustable and controllable billet assembly mold 3 includes a U-shaped upper plate 31, a U-shaped lower plate 32, a movable baffle device 33, and a lifting adjustment device 35. The center of the U-shaped upper plate 31 and the U-shaped lower plate 32 forms a sheet material laying space 34. The movable baffle device 33 is installed in front of, behind, to the left and to the right of the sheet material laying space 34. The lifting adjustment device 35 is installed between the U-shaped upper plate 31 and the U-shaped lower plate 32.

[0078] Specifically, the movable baffle device 33 includes a top positioning baffle 331 and a bottom positioning baffle 332. The top positioning baffle 331 is slidably connected to the U-shaped upper plate 31, and the bottom positioning baffle 332 is slidably connected to the U-shaped lower plate 32. The bottom positioning baffle 332 has an inner U-shaped groove 3321. S3, Paving board: The lower wood and bamboo composite material layer 91, the straw blank layer 92, and the upper wood and bamboo composite material layer 93 are sequentially placed into the paving board space 34. The movable baffle device 33 positions the lower wood and bamboo composite material layer 91, the straw blank layer 92, and the upper wood and bamboo composite material layer 93 to obtain the composite structure board blank layer 9. Specifically, the lower layer of wood and bamboo composite material 91 is first placed into the board paving space 34, and the top positioning baffle 331 is located in the inner U-shaped groove 3321; Next, a straw blank layer 92 is placed into the board laying space 34, and then the U-shaped upper plate 31 moves upward, so that the top positioning baffle 331 is separated from the inner U-shaped groove 3321. The top positioning baffle 331 moves towards the board laying space 34, and the edge sidewall of the top positioning baffle 331 is aligned with the edge sidewall of the bottom positioning baffle 332. Next, the upper wood and bamboo composite material layer 93 is placed into the board laying space 34. As the thickness of the board laying increases, the U-shaped upper plate 31 and the top positioning baffle 331 automatically increase in height, so that the upper wood and bamboo composite material layer 93 is lower than the U-shaped upper plate 31.

[0079] S4. The mold hoist 4 is not working, and the U-shaped liftable control assembly mold 3 remains on the pad 5. S5. The feeding plate conveyor 6 transports the pad 5, the U-shaped liftable assembly mold 3, and the composite structure plate blank layer 9 to the pre-pressing machine 1. S5-1. The pre-compression machine 1 includes a frame 12, a main pressure plate 13, a sheet material transfer device 14, an outer pressure plate 15, and an inner pressure plate 16. The sheet material transfer device 14 is fixedly installed on the frame 12. The main pressure plate 13, the outer pressure plate 15, and the inner pressure plate 16 are all located above the sheet material transfer device 14. The inner pressure plate 16 is adjacent to the main pressure plate 13 and can enter the sheet material laying space 34. The outer pressure plate 15 is adjacent to the inner pressure plate 16, and a pre-compression electromagnet 151 is installed on the outer pressure plate 15. The pad 5 moves from the feeding plate conveyor 6 to the plate transfer device 14. The top positioning baffle 331 and the bottom positioning baffle 332 return to their initial positions and leave the composite structure plate blank layer 9. Then, the U-shaped upper plate 31 and the top positioning baffle 331 move downwards. The top positioning baffle 331 enters the inner U-shaped groove 3321. Finally, the top positioning baffle 331 and the bottom positioning baffle 332 both return to their initial positions, and the composite structure plate blank layer 9 protrudes from the U-shaped upper plate 31. S5-2, The main pressure plate 13 presses down on the composite structure plate blank layer 9, then the outer pressure plate 15 moves down, the pre-pressing electromagnet 151 attracts the U-shaped upper plate 31, the outer pressure plate 15 moves up to the same horizontal position as the main pressure plate 13, and at the same time lifts the U-shaped adjustable control blanking mold 3. S5-3. After pre-pressing is completed, the inner pressure plate 16 moves downward until it touches the composite structure plate blank layer 9. Then the main pressure plate 13 and the outer pressure plate 15 move upward, and the U-shaped liftable control blanking mold 3 rises. When the U-shaped lower plate 32 is higher than the composite structure plate blank layer 9, the inner pressure plate 16 moves upward to the same horizontal position as the main pressure plate 13. Specifically, S6-1, the plate transfer device 14 transports the pre-pressed composite structure plate blank layer 9 to the discharge plate conveyor 7. S6-2, the outer pressure plate 15 moves downward, placing the U-shaped liftable controllable blank mold 3 on the plate transfer device 14, the pre-pressure electromagnet 151 releases the U-shaped upper plate 31, and the outer pressure plate 15 returns to the same horizontal position as the main pressure plate 13. S6-3. The plate transfer device 14 transports the U-shaped liftable controllable assembly mold 3 to the discharge plate conveyor 7. The mold hoist 4 lifts the U-shaped liftable controllable assembly mold 3 away from the discharge plate conveyor 7 and then moves the U-shaped liftable controllable assembly mold 3 above the feed plate conveyor 6 for the next assembly and laying operation.

[0080] The working principle of this invention: The composite structural board of this invention includes a wood-bamboo reconstituted material layer composed of at least one veneer and a straw blank layer; wherein, the veneer of the wood-bamboo reconstituted material layer is at least one of wood veneer, bamboo veneer, bamboo curtain, or bamboo mat. Each veneer of the wood-bamboo reconstituted material layer is sequentially dried once, adhesive is applied, and then dried a second time for later use; the preparation operation of the straw blank layer 92 is as follows: qualified straw is selected and adhesive is applied, and then a dryer is used for the drying process. The dried straw blanks form the straw blank layer 92; the straw blank layer 92 is pre-pressed to remove air, thereby expelling the air between the straws and allowing the pores between the straws to be better filled, that is, to achieve the effect of compacting the straw blank layer 92. The veneers of the wood-bamboo reconstituted material layer after the second drying are then assembled into a wood-bamboo reconstituted material layer, and then assembled and laid together with the pre-pressed and degassed straw blank layer 92. The formed board blank is sequentially pre-pressed, hot-pressed, cooled, sanded, and cut to obtain the composite structural board.

[0081] The installation of the straw blank layer and the wood and bamboo composite material layer is completed in the U-shaped liftable assembly mold 3. First, the lower wood and bamboo composite material layer 91 is positioned and laid in the U-shaped liftable assembly mold 3 on the pad 5. The mold electromagnet 36 is energized, and the U-shaped liftable assembly mold 3 is tightly attached to the pad 5. Then, the straw blank layer laying machine 8 is used to transport the pre-compressed straw blank layer 92 and lay it in the U-shaped liftable assembly mold 3, positioning it above the lower wood and bamboo composite material layer 91. Then, the upper wood and bamboo composite material layer 93 is laid in the U-shaped liftable assembly mold 3, and finally, the decorative paper 94 is laid to complete the assembly process.

[0082] The top positioning baffle 331 and the U-shaped upper platen 31 of the adjustable height control mold 3 automatically increase in height as the upper wood and bamboo composite material layer 93 increases, ensuring that the edge positioning of the upper wood and bamboo composite material layer 93 is always controlled within the specified optimal spacing position. First, the plurality of lifting adjustment devices 35 descend to below the lowest position of 40 mm, closing the inner U-shaped groove 3321 with the top positioning baffle 331, and the outer U-shaped groove 3381 with the top support 337. Then, the active control component pushes the push rod, combining... Figure 5Push the top positioning baffle 331 and bottom positioning baffle 332 to the left by 1-2 mm and stop, so that they exceed the lower flat plate of the U-shaped structure by 1-2 mm. Begin laying the longitudinal wood veneer, transverse wood veneer, longitudinal bamboo curtain, and other veneer materials. After laying the required number of layers, begin positioning and laying the straw blank layer 92. After the straw blank layer 92 is laid, the multiple lifting adjustment device 35 begins to rise steadily under the action of the cylinder, so that the upper flat plate of the U-shaped structure 31 begins to rise, and the top positioning baffle 331 exceeds the straw blank layer by 1-2 cm and stops. Then, driven by the top moving control component 335, the top positioning baffle 331 moves to the left by about 2 mm until the edge sidewall of the top positioning baffle 331 and the edge sidewall of the bottom positioning baffle 332 are on the same vertical line. Next, the upper layer of wood and bamboo composite material 93 is laid, such as wood veneer, longitudinal bamboo curtain, transverse wood veneer, longitudinal wood veneer, decorative paper, etc. During the laying of the upper layer of wood and bamboo composite material 93, the edges of the U-shaped upper plate 31 and the top positioning baffle 331 are always kept at a height that automatically increases by 1-2 cm as the upper layer of wood and bamboo composite material 93 increases; this continues until the laying work is completed. A raw material detection sensor 37 is installed at the upper end of the top positioning baffle 331, and the raw material detection sensor 37 is electrically connected to the lifting adjustment device 35. When the raw material detection sensor 37 detects a board, the lifting adjustment device 35 moves the U-shaped upper plate 31 and the top positioning baffle 331 upwards. When the raw material detection sensor 37 does not detect a board, the lifting adjustment device 35 stops rising, realizing that the U-shaped adjustable mold 3 automatically rises as the thickness of the laid board increases.

[0083] After the upper layer of wood and bamboo composite material is laid, the top movable control component of the U-shaped adjustable mold retracts the top positioning baffle by 2-3 mm, aligning the center line of the auxiliary baffle with the center line of the inner U-shaped groove. Then, the lifting adjustment device smoothly descends to its lowest position. The top and bottom positioning baffles move to the right to their initial working positions to completely release the composite material. The feeding conveyor transports the stainless steel pad with the composite structure panel blank layer to the pre-press for pre-pressing.

[0084] During the pre-pressing of the laid slab, the internal control circuit of the U-shaped adjustable slab assembly mold 3 controls the lifting adjustment device 35 to lower it to the lowest position below 40 mm. This prevents the U-shaped adjustable slab assembly mold 3 from being damaged by the pressure of the main pressure plate 13 of the pre-pressing machine 1.

[0085] During the pressure holding stage of the pre-compressor 1, the outer auxiliary hydraulic cylinder (cylinder) of the pre-compressor 1 drives the outer pressure plate 15 to descend to the position of the U-shaped upper plate 31. The pre-compressor electromagnet 151 at the top of the outer pressure plate 15 is energized and attracts the U-shaped upper plate 31. Then, the outer auxiliary hydraulic cylinder (cylinder) of the pre-compressor 1 drives the outer pressure plate 15 to rise to the position of the main pressure plate 13. At this point, the outer auxiliary hydraulic cylinder (cylinder) of the pre-compressor 1 enters the stage of synchronous rising with the main pressure plate 13 of the pre-compressor 1.

[0086] At the end of the pre-pressing stage of the pre-pressing machine 1, the mold electromagnet 36 is de-energized, the U-shaped lower platen 32 releases the pad 5, and the auxiliary oil cylinder (cylinder) on the outside of the pre-pressing machine 1 rises synchronously with the main pressure plate 13 of the pre-pressing machine 1 to the highest working position and then stops. At this time, the U-shaped liftable control assembly mold 3 is separated from the composite structure plate blank layer 9. At least four inner auxiliary oil cylinders (cylinders) drive the inner pressure plate 16 to descend to the composite structure plate blank layer 9 and press it down at the end of the pre-pressing stage of the pre-pressing machine 1, so that when the U-shaped liftable control assembly mold 3 rises, it can overcome the resistance generated by the pre-pressing deformation of the composite structure plate blank layer 9. When the U-shaped adjustable control blanking mold 3 rises until its U-shaped lower platen 32 is completely detached from the composite structure plate blank layer 9, at least four inner auxiliary cylinders (cylinders) begin to rapidly lift the inner pressure plate 16 to the initial working position, so that the inner pressure plate 16 is fitted onto the main pressure plate 13 of the pre-pressing machine 1, and the lower surface of the inner pressure plate 16 is kept on the same plane as the lower surface of the main pressure plate 13; awaiting the next pre-pressing process. Then, the pre-pressed composite structure plate blank layer 9 is transported to the outside of the pre-pressing machine 1 along with the pad plate 5, and then transported to the plate feed bracket of the hot press 2. Subsequently, the outer auxiliary cylinders (cylinders) of the pre-pressing machine 1 drive the outer pressure plate 15 to lower the U-shaped adjustable control blanking mold 3 to the plate transfer device 14, the pre-pressing electromagnet 151 at the top of the pressure plate is de-energized, and the outer auxiliary cylinders (cylinders) of the pre-pressing machine 1 then raise the outer pressure plate 15 to the initial working position. The U-shaped adjustable mold 3 is transported by the plate transfer device 14 to the discharge plate conveyor 7. The mold hoist 4 lifts the U-shaped adjustable mold 3 from the discharge plate conveyor and then transports it to the pad 5 at the initial laying position for the next plate laying and assembly work.

[0087] The pre-pressed composite structural panel blank layer 9 is hot-pressed to obtain the slab blank used as the container floor. After entering the hot press 2, the hot press 2 is quickly closed to the highest pressure. The hot pressing temperature is 130℃~145℃, the maximum pressure is 40-50kg / cm2, and the hot pressing time for the 28mm thick container floor slab blank is 50 minutes~80 minutes; the hot pressing time per millimeter of slab blank is 107s~172s. After hot pressing, the hot press plate is cooled by cooling water to quickly cool the hot-pressed slab blank material to below 50℃. Then, the hot press 2 is quickly opened, and the hot-pressed slab blank is transported to the subsequent process. The hot press 2 then waits for the next batch of slab blanks to enter.

Claims

1. A processing equipment for composite structural panels in molded sheet materials, characterized in that, include: Pre-press, hot press, U-shaped adjustable lifting control billet assembly mold, mold hoist, pad, feeding plate conveyor, discharging plate conveyor and straw blank layer laying machine; The U-shaped adjustable mold includes a U-shaped upper plate, a U-shaped lower plate, a movable baffle device, and a lifting adjustment device. The center of the U-shaped upper plate and the U-shaped lower plate forms a plate laying space. The movable baffle device is installed in front of, behind, to the left and to the right of the plate laying space. The lifting adjustment device is installed between the U-shaped upper plate and the U-shaped lower plate. The mold lifting machine includes an overhead track, a transport trolley, and a lifting base. The transport trolley is installed on the overhead track, and the lifting base is vertically connected to the transport trolley. The lifting base is used for loading and unloading the U-shaped liftable controllable assembly mold. The overhead track is fixedly installed above the feeding plate conveyor and the discharging plate conveyor. The straw blank layer laying machine is installed at the inlet of the feeding plate conveyor, the outlet of the feeding plate conveyor is aligned and connected to the inlet of the pre-compressor, the outlet of the pre-compressor is aligned and connected to the inlet of the discharging plate conveyor, and the outlet of the discharging plate conveyor is connected to the inlet of the hot press. The pad is used to support the U-shaped lower plate and the plates located in the plate laying space. The pad moves sequentially through the feeding plate conveyor, the pre-press, the discharging plate conveyor and the hot press. The pre-compression machine includes a frame, a main pressure plate, a sheet material transfer device, an outer pressure plate, and an inner pressure plate. The sheet material transfer device is fixedly installed on the frame. The main pressure plate, the outer pressure plate, and the inner pressure plate are all located above the sheet material transfer device. The inner pressure plate is adjacent to the main pressure plate and can enter the sheet material laying space. The outer pressure plate is adjacent to the inner pressure plate. A pre-compression electromagnet is installed on the outer pressure plate. The pre-compression electromagnet is used to attract the U-shaped upper plate. The movable baffle device includes a top positioning baffle, a top push rod, a top movable control component, and a top support. The top support is fixedly installed on the U-shaped upper plate and is located on the periphery. The positioning baffle is slidably installed on the U-shaped upper plate and is located on the inner periphery. The top movable control component is installed on the top support, and the telescopic end of the top movable control component is connected to the top positioning baffle through the top push rod. The movable baffle device further includes a bottom positioning baffle, a bottom push rod, a bottom movable control component, and a bottom support. The bottom support is fixedly installed on the U-shaped lower plate and located on the periphery. The positioning baffle is slidably installed on the U-shaped lower plate and located on the inner periphery. The bottom movable control component is installed on the bottom support, and the telescopic end of the bottom movable control component is connected to the bottom positioning baffle through the bottom push rod. The bottom positioning baffle has an inner U-shaped groove, and the top positioning baffle can enter and exit the inner U-shaped groove. The bottom support has an outer U-shaped groove, and the top support can enter and exit the outer U-shaped groove.

2. The processing equipment for composite structural panels in molded sheet metal according to claim 1, characterized in that, Also includes: A wood veneer laying machine, a bamboo veneer laying machine, a bamboo curtain laying machine, and a bamboo mat laying machine are installed at the entrance of the feeding board conveyor. In the board paving space, the lower layer of wood and bamboo reconstituted material, the straw blank layer, and the upper layer of wood and bamboo reconstituted material are placed in sequence. The veneer of both the lower wood-bamboo composite material layer and the upper wood-bamboo composite material layer is at least one of wood veneer, bamboo veneer, bamboo curtain or bamboo mat.

3. The processing equipment for composite structural panels in molded sheet metal according to claim 1, characterized in that, The pre-compressor includes a scraper suction device, which is slidably connected to the outlet of the pre-compressor. The scraper suction device has a scraper and a suction port arranged in front and behind. The scraper is used to scrape out the debris from the edge of the pad, and the suction port is used to suck up the scraped debris.

4. The processing equipment for composite structural panels in molded sheet metal according to claim 1, characterized in that, The movable baffle device also includes an auxiliary baffle, which is sleeved and connected to the top positioning baffle. The top positioning baffle has a positioning cavity, a positioning sliding hole at the bottom, and a positioning air hole on the side wall. The top of the auxiliary baffle has an auxiliary limiting plate, and the bottom has an auxiliary sliding hole. The body of the auxiliary baffle is slidably connected to the positioning sliding hole. The auxiliary limiting plate is located in the positioning cavity and cannot pass through the positioning sliding hole. The auxiliary limiting plate has an auxiliary air hole. The auxiliary baffle has an auxiliary cavity, and the auxiliary air hole communicates with the auxiliary cavity. The auxiliary baffles are arranged sequentially from top to bottom and their sizes decrease sequentially, with adjacent auxiliary baffles being nested together.

5. The processing equipment for composite structural panels in molded sheet metal according to claim 1, characterized in that, The lifting base has a vertical telescopic member, a boss, and a lifting rope. The boss is located at the center of the lifting base, and multiple vertical telescopic members are arranged around the boss. The telescopic end of the vertical telescopic member has a lifting electromagnet. The lifting electromagnet is used to attract the U-shaped upper plate. The boss can enter the paving space of the board. The lifting rope is connected to the winder of the transport trolley.

6. A processing technology for composite structural panels in molded sheet materials, characterized in that, Includes the following steps: S1. Preparation of straw blank layer: Take straw raw material and apply adhesive, then use a dryer to dry it. The dried straw blank forms a straw blank layer. The straw blank layer is pre-pressed to de-air. S2. Setting up a U-shaped adjustable controllable billet assembly mold: A pad is placed on the feeding sheet conveyor, and then a U-shaped adjustable controllable billet assembly mold is placed on the pad. The U-shaped adjustable controllable billet assembly mold includes a U-shaped upper plate, a U-shaped lower plate, a movable baffle device, and a lifting adjustment device. The center of the U-shaped upper plate and the U-shaped lower plate forms a sheet paving space. The movable baffle device is installed in front of, behind, to the left and to the right of the sheet paving space. The lifting adjustment device is installed between the U-shaped upper plate and the U-shaped lower plate. The movable baffle device includes a top positioning baffle and a bottom positioning baffle. The top positioning baffle is slidably connected to the upper plate of the U-shaped plate, and the bottom positioning baffle is slidably connected to the lower plate of the U-shaped plate. The bottom positioning baffle has an inner U-shaped groove. S3, Paving material: First, place the lower layer of wood and bamboo reconstituted material into the paving material space, and the top positioning baffle is located in the inner U-shaped groove; Next, a layer of straw blanks is placed into the board paving space. Then, the U-shaped upper plate moves upward, causing the top positioning baffle to disengage from the inner U-shaped groove. The top positioning baffle moves towards the board paving space, and the edge sidewall of the top positioning baffle aligns with the edge sidewall of the bottom positioning baffle. Next, the upper layer of wood and bamboo composite material is placed into the board paving space. As the thickness of the board paving increases, the U-shaped upper plate and the top positioning baffle automatically increase in height, so that the upper layer of wood and bamboo composite material is lower than the U-shaped upper plate. S4. The mold hoist is not working, and the U-shaped liftable assembly mold remains on the pad. S5. The feeding plate conveyor transports the pad, the U-shaped liftable assembly mold, and the composite structure plate blank layer to the pre-pressing machine. S5-1. The pre-compression machine includes a frame, a main pressure plate, a sheet material transfer device, an outer pressure plate, and an inner pressure plate. The sheet material transfer device is fixedly installed on the frame. The main pressure plate, the outer pressure plate, and the inner pressure plate are all located above the sheet material transfer device. The inner pressure plate is adjacent to the main pressure plate and can enter the sheet material laying space. The outer pressure plate is adjacent to the inner pressure plate, and a pre-compression electromagnet is installed on the outer pressure plate. The pad moves from the feeding plate conveyor to the plate transfer device, the top positioning baffle and the bottom positioning baffle return to their initial positions and leave the composite structure plate blank layer, then the U-shaped upper plate and the top positioning baffle move downwards, the top positioning baffle enters the inner U-shaped groove, and finally the top positioning baffle and the bottom positioning baffle both return to their initial positions, and the composite structure plate blank layer protrudes from the U-shaped upper plate; S5-2, The main pressure plate presses down on the composite structure plate blank layer, then the outer pressure plate moves down, the pre-pressing electromagnet attracts the U-shaped upper plate, and the outer pressure plate moves up to the same horizontal position as the main pressure plate, while the U-shaped adjustable control blank assembly mold is lifted. S5-3. After pre-pressing is completed, the inner pressure plate moves downward until it touches the composite structure plate blank layer. Then the main pressure plate and the outer pressure plate move upward, and the U-shaped liftable control blank assembly mold rises. When the U-shaped lower plate is higher than the composite structure plate blank layer, the inner pressure plate moves upward to the same horizontal position as the main pressure plate. S6-1, The plate transfer device transports the pre-pressed composite structure plate blank layer to the discharge plate conveyor. S6-2, The outer pressure plate moves downward, placing the U-shaped liftable controllable billet mold on the plate transfer device, the pre-pressure electromagnet releases the U-shaped upper plate, and the outer pressure plate returns to the same horizontal position as the main pressure plate; S6-3. The plate transfer device transports the U-shaped liftable controllable billet assembly mold to the discharge plate conveyor. The mold hoist lifts the U-shaped liftable controllable billet assembly mold away from the discharge plate conveyor and then moves the U-shaped liftable controllable billet assembly mold above the feed plate conveyor. S7. The discharge plate conveyor transports the pre-pressed composite structure plate blank to the hot press.

Images