Vacuum press device for orthogonal glulam and method for pressing

Abstract

The present application relates to the technical fields of vacuum pressurized orthogonal glulam, and discloses a self-releasing stress vacuum pressurizing equipment for orthogonal glulam and a pressurizing method thereof, which comprises a base, a placing cavity, a pulling piece, a mounting rack, a hanging beam frame and a pressing device, a flexible pressing plate is installed between the mounting rack and the hanging beam frame, and the hanging beam frame and the mounting rack are placed on the upper surface of the placing cavity. Through the setting of the placing cavity, the flexible pressing plate and the air extraction pipeline, the internal air of the space is continuously extracted to the outside of the placing cavity by the external vacuum tank, a negative pressure environment is created for the space, the negative pressure environment can provide more uniform pressure distribution, because the flexible pressing plate forms a uniform contact on the surface of the orthogonal glulam, which helps to ensure that the entire surface of the orthogonal glulam is subjected to equal force, and reduces the uneven compression or deformation that may occur during the pressing process of the orthogonal glulam.

Description

Technical Field

[0001] This invention relates to the field of vacuum pressurized orthogonal laminated timber equipment technology, specifically a self-releasing stress vacuum pressurization device and its pressurization method for orthogonal laminated timber. Background Technology

[0002] Cross-laminated timber (CLT) is a new type of wood building material. It is made by cross-laminated timber planks glued together, and the area and thickness can be customized. The characteristic of CLT is that it glues together timber with cross-grained and cross-grained wood to achieve better strength.

[0003] In existing technologies, a hydraulic cylinder is typically connected to a steel plate at its output end. The hydraulic cylinder applies pressure to the steel plate, which in turn applies pressure to the pre-glued cross-laminated timber to achieve bonding. However, this method uses a hydraulic cylinder as the main tool for applying pressure, resulting in high energy consumption. Furthermore, if the flatness of the steel plate being pressurized is poor, the stress distribution on the steel plate will be uneven when high pressure is applied. This means that the pressure will not be evenly distributed across the entire surface of the cross-laminated timber, causing uneven pressure on the cross-laminated timber during the pressing process. This leads to quality defects such as cracking, delamination, or deformation, seriously affecting the durability and overall performance of the product. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a self-releasing stress vacuum pressurizing device and pressurizing method for orthogonal glued laminated timber, which addresses the shortcomings of the prior art. The self-releasing stress vacuum pressurizing device and pressurizing method for orthogonal glued laminated timber can apply uniform pressure to the orthogonal glued laminated timber to achieve gluing. Compared with the prior art, which uses hydraulic cylinders to apply pressure, energy consumption is reduced and the entire orthogonal glued laminated timber is subjected to more uniform pressure.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A self-releasing stress vacuum pressurizing device for orthogonal glued laminated timber includes a base, a placement cavity, a pull-out component, a mounting frame, a lifting beam, a pressing device, and an air extraction pipe;

[0007] The base has a cavity on its inner side;

[0008] The bottom of the placement cavity is connected to the top of the base and the bottom of the placement cavity covers the cavity of the base. The bottom of the placement cavity is provided with a lifting through hole and an air outlet.

[0009] The pull-out component is located in the cavity of the base. The pull-out component includes an automatic lifting structure, a slide rail, a pull rod, a sliding plate, and a lifting plate. The automatic lifting structure is connected to the inner wall of the cavity of the base. The slide rail is fixedly connected to the bottom outer wall of the placement cavity. The pull rod and the sliding plate are slidably connected between the two slide rails. The tail of the pull rod is fixedly connected to the sliding plate, and the head of the pull rod extends to the outside of the base. The lifting plate is fixedly connected to the output end of the automatic lifting structure. The lifting plate can slide along the lifting through hole at the bottom of the placement cavity and can disengage from the lifting through hole at the bottom of the placement cavity. The lifting plate is located in or above the gap between the pull rod and the sliding plate.

[0010] The mounting frame, the top of the flexible pressure plate, and the hanging beam are detachably connected from the outside to the inside. When the mounting frame is placed on the upper surface of the placement cavity, the flexible pressure plate can seal and cover the top opening of the placement cavity.

[0011] A pressing device for pressing the mounting bracket onto the placement cavity is connected to the outer wall of the placement cavity;

[0012] One end of the air extraction pipe extends to the outside of the base, and the other end is connected to the air outlet at the bottom of the placement chamber.

[0013] As a further improvement of the present invention, the four inner walls of the mounting frame, the top edge of the flexible pressure plate and the bottom of the hanging beam frame are detachably connected by bolts from the outside to the inside, and the flexible pressure plate is made of rubber.

[0014] As a further improvement of the present invention, the pull-out component includes two parallel slide rails, the tails of which are fixedly connected by a connecting rod; the pull rod is a U-shaped rod, and the two parallel rods in the pull rod are slidably connected to the two slide rails respectively; the automatic lifting structure adopts a hydraulic cylinder.

[0015] As a further improvement of the present invention, there are two pull-out components, which are arranged symmetrically.

[0016] As a further improvement of the present invention, a plurality of first fixing blocks are fixedly connected to the outer wall of the placement cavity, and a pressing device is connected to the top of the first fixing blocks.

[0017] As a further improved technical solution of the present invention, the upper surface of the lifting plate is used to place orthogonal glued timber that has been coated with glue and is to be pressed. The orthogonal glued timber is located inside the placement cavity. Multiple grooves are provided on the bottom inner wall of the placement cavity, and each groove has an air vent at the bottom.

[0018] As a further improved technical solution of the present invention, the air extraction pipe includes multiple joints, multiple connecting pipes, a connecting pipe and an output pipe. The joints are threadedly connected to the air outlet of the placement cavity. Each joint is threadedly connected to a connecting pipe. The ends of the multiple connecting pipes away from the joints are connected to the connecting pipe. The connecting pipe is connected to the output pipe, and the output pipe extends to the outside of the base.

[0019] As a further improvement of the present invention, the mounting frame is a square frame, and a plurality of second fixing blocks are fixedly connected to the outer wall of the mounting frame. The pressing device is used to press and cooperate with the second fixing blocks.

[0020] As a further improvement of the present invention, the pressing device includes a mounting plate, a vertical plate, a pressing block, a handle, and a clamping screw. The mounting plate is bolted to the top of the first fixing block. The vertical plate is fixedly connected to the top of the mounting plate. An arc groove is formed in the middle of the top of the vertical plate. The left arc corner of the top of the vertical plate is rotatably connected to the lower right corner of the pressing block. The upper right corner of the pressing block is rotatably connected to a first arc protrusion at one end of the handle. A second arc protrusion is also provided on the handle. The second arc protrusion is rotatably connected to the right arc corner of the top of the vertical plate via a connecting rod. The pressing block is provided with a through groove, and the clamping screw is connected to the through groove via a nut.

[0021] When the handle is lowered, the second arc protrusion of the handle rotates into the arc groove of the vertical plate, thereby causing the pressing block to drive the clamping screw into a vertical state and thus clamp the second fixing block.

[0022] When the handle is lifted, the first arc protrusion of the handle rotates into the arc groove of the vertical plate, which in turn causes the pressing block to lift the clamping screw to a horizontal state.

[0023] To achieve the above-mentioned technical objectives, another technical solution adopted by the present invention is as follows:

[0024] A method for pressurizing orthogonal glued laminated timber using a self-releasing stress vacuum pressurizing device includes:

[0025] Step 1: Place the pre-applied and glued orthogonal laminated timber, which is ready to be pressed, on the upper surface of the lifting plate. At this time, the lifting plate is located in the lifting through hole of the placement cavity, and the lifting plate is in sealed contact with the lifting through hole of the placement cavity around its perimeter.

[0026] Step 2: Connect and fix the top of the flexible pressure plate between the mounting frame and the hanging beam frame using connectors, and hoist it above the placement cavity. At this time, the mounting frame is placed on top of the placement cavity, and the outer walls of the flexible pressure plate cover and seal the top opening of the placement cavity.

[0027] Step 3: Press the mounting bracket firmly onto the placement cavity using the pressing device;

[0028] Step 4: Connect the air extraction pipe to the external vacuum tank. The external vacuum tank continuously extracts the internal air from the space between the flexible pressure plate and the placement cavity to the outside of the placement cavity, creating a negative pressure environment for the space. The flexible pressure plate will gradually move closer to the cross-laminated wood to be pressed.

[0029] Step 5: After the preset time, remove the connectors between the mounting bracket, flexible pressure plate, and hanging beam frame to loosen the top of the flexible pressure plate;

[0030] Step 6: Continue to extract air from the inside of the placement chamber through the external vacuum tank. The top of the flexible pressure plate is pressed tightly against the inner wall of the placement chamber. The flexible pressure plate forms a uniform contact on the surface of the cross-laminated wood to be pressed. The flexible pressure plate presses the cross-laminated wood together.

[0031] Step 7: After pressing is completed, start the automatic lifting structure. The output end of the automatic lifting structure retracts, lowers the lifting plate, and makes the upper surface of the lifting plate and the lower surface of the sliding plate coincide. The automatic lifting structure then stops retracting.

[0032] Step 8: After the head of the pull rod passes through the reserved hole in the base, it extends to the outside of the base. Pull the pull rod, and the pull rod will drive the sliding plate to move outward of the reserved hole on the base, thereby pulling out the pressed cross-laminated wood on the upper surface of the lifting plate.

[0033] The beneficial effects of this invention are as follows:

[0034] (1) In this invention, the orthogonal laminated timber is placed on the upper surface of the lifting plate and inside the placement cavity. The placement cavity has a large area during production to accommodate orthogonal laminated timber of different sizes for pressing. The top edge of the rubber is fixedly installed between the mounting frame and the hanging beam frame. The hanging beam frame, mounting frame and rubber are hoisted to the top of the placement cavity by a gantry crane. At this time, the outer wall of the rubber closes the top opening of the placement cavity, forming a space between the rubber and the placement cavity. Then, an external vacuum tank is connected through an air extraction pipe. The air inside the space is continuously extracted to the outside of the placement cavity by the external vacuum tank to create a negative pressure environment for the space. The rubber will gradually move closer to the orthogonal laminated timber. When the bottom of the rubber is sealed to the orthogonal laminated timber and the placement cavity, the connection between the mounting frame and the hanging beam frame is released to release the fixation of the upper edge of the rubber. At the same time, the vacuum tank continues to maintain and deepen the negative pressure state in the space. This process ensures that the upper edge of the rubber adheres tightly to the inner wall of the placement cavity, while the negative pressure environment guarantees a uniform distribution of pressure on the surface of the cross-laminated wood (CFLAC). This results in a comprehensive and consistent contact interface between the rubber and the CFLAC surface, which not only greatly promotes the uniform transmission of force during pressing but also effectively avoids problems such as excessive local compression, deformation, or cracking caused by uneven stress on the boards. This significantly improves the pressing quality and the consistency of the finished product. This invention achieves negative pressure through air extraction to press CFLAC, resulting in low overall energy consumption.

[0035] (2) By setting up a pull-out component, after the rubber is pressed against the ortholaminated wood, the output end of the hydraulic cylinder retracts to lower the lifting plate, so that the upper surface of the lifting plate and the lower surface of the sliding plate coincide. At this time, the pull rod is pulled to move the sliding plate to the outside of the base, thereby pulling out the pressed ortholaminated wood, which facilitates the removal of the ortholaminated wood, simplifies the removal process of the ortholaminated wood, and significantly improves the efficiency and convenience of operation. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 This is a three-dimensional structural diagram of the present invention after the base is hidden.

[0039] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention, in which a flexible pressure plate is hidden and orthogonal glued laminated timber is placed.

[0040] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention after the flexible pressure plate is hidden.

[0041] Figure 5 This is a schematic diagram of the structure of the lifting beam frame and flexible pressure plate of the present invention.

[0042] Figure 6 This is a schematic diagram of the pull-out component of the present invention.

[0043] Figure 7 This is a schematic diagram of the mounting bracket of the present invention.

[0044] Figure 8 This is a schematic diagram of the air extraction pipe of the present invention.

[0045] Figure 9 This is a schematic diagram of the pressing device of the present invention.

[0046] Figure 10 This is a schematic diagram of the pressing device of the present invention.

[0047] In the picture:

[0048] 1. Base; 2. Placement cavity; 201. Groove; 202. First fixing block; 203. Vent; 3. Pull-out component; 301. Automatic lifting structure; 302. Slide rail; 303. Pull rod; 304. Sliding plate; 305. Lifting plate; 306. Connecting rod; 307. Gap; 4. Mounting bracket; 401. Second fixing block; 5. Hanging beam frame; 6. Pressing device; 601. Mounting plate; 602. Bolt; 603 6031. Vertical plate; 6032. Circular groove; 6033. Left circular corner; 6034. Right circular corner; 605. Pressing block; 606. Handle; 607. First circular protrusion; 608. Second circular protrusion; 609. Nut; 6000. Clamping screw; 7001. Air extraction pipe; 701. Connector; 702. Connecting pipe; 703. Connecting pipe; 704. Output pipe; 8. Orthogonal laminated timber; 9. Flexible pressure plate. Detailed Implementation

[0049] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] like Figure 1-4As shown, a self-releasing stress vacuum pressurizing device for orthogonal glued laminated timber includes a base 1, a placement cavity 2, a pull-out component 3, a mounting frame 4, a hanging beam frame 5, a pressing device 6, an air extraction pipe 7, and a flexible pressure plate 9.

[0052] The base 1 has a cavity on its inner side; the purpose of the cavity is to install the pull-out part 3 and the air extraction pipe 7.

[0053] The bottom of the placement cavity 2 is connected to the top of the base 1, and the bottom of the placement cavity 2 covers the cavity of the base 1. The bottom of the placement cavity 2 is provided with a lifting through hole and an air outlet 203.

[0054] Among them, such as Figure 2 As shown, the pull-out component 3 is located in the cavity of the base 1. The pull-out component 3 includes an automatic lifting structure 301, two parallel slide rails 302, a pull rod 303, a sliding plate 304, and a lifting plate 305. The automatic lifting structure 301 uses a hydraulic cylinder, and the hydraulic cylinder's operation control method adopts existing technology. The automatic lifting structure 301 is connected to the inner wall of the cavity of the base 1, and the two slide rails 302 are fixedly connected to the bottom outer wall of the placement cavity 2. The tails of the two slide rails 302 are fixedly connected to each other through a connecting rod 306. Figure 6 As shown, the pull rod 303 and the sliding plate 304 are both slidably connected between two slide rails 302. The pull rod 303 is a U-shaped rod, and two parallel rods in the pull rod 303 are slidably connected to the two slide rails 302 respectively. The tail of the pull rod 303 is fixedly connected to the sliding plate 304, and the head of the pull rod 303 extends to the outside of the base 1 after passing through the reserved hole of the base 1. The lifting plate 305 is fixedly connected to the output end of the automatic lifting structure 301. The lifting plate 305 can slide along the lifting through hole at the bottom of the placement cavity 2 in a sealed manner (the sealing sliding method adopts existing technology, and sealing gaskets can be installed around the lifting through hole at the bottom of the placement cavity 2) and can disengage from the lifting through hole at the bottom of the placement cavity 2. The lifting plate 305 is located at the pull... The rod 303 is positioned within or above the gap 307 between the rod 303 and the sliding plate 304. This arrangement is intended to allow the orthogonal laminated timber 8 to be pressed together by the flexible pressure plate 9. After the output end of the automatic lifting structure 301 retracts, the lifting plate 305 is lowered, ultimately causing the upper surface of the lifting plate 305 to overlap with the lower surface of the sliding plate 304. At this point, the rod 303 is pulled, causing the sliding plate 304 to move outward from the base 1, thereby pulling the pressed orthogonal laminated timber 8 above the lifting plate 305 out of the pre-drilled hole in the base 1.

[0055] There are two pull-out components 3, which are arranged symmetrically.

[0056] like Figure 5 and 7As shown, the inner walls of the mounting frame 4, the top edge of the flexible pressure plate 9, and the bottom perimeter of the lifting beam frame 5 are detachably connected from the outside to the inside by multiple bolts 602. In specific implementation, the mounting frame 4 is placed on the top wall of the placement cavity 2. The mounting frame 4 is a square frame, and the placement cavity 2 is a square cavity. When the mounting frame 4 is placed on the top wall of the placement cavity 2, the flexible pressure plate 9 can be sealed and covered at the top opening of the placement cavity 2. The dimensions of the inner walls of the mounting frame 4 can be slightly larger than or equal to the dimensions of the top opening of the placement cavity 2, and the dimensions of the outer perimeter of the flexible pressure plate 9 can be slightly larger than or equal to the dimensions of the top opening of the placement cavity 2. The specific shape and size of the flexible pressure plate 9 can be changed according to the actual situation, as long as it can be ensured that the flexible pressure plate 9 can be sealed and covered at the top opening of the placement cavity 2. The purpose of the mounting frame 4, the flexible pressure plate 9, and the lifting beam frame 5 is to fix the top edge of the flexible pressure plate 9 between the mounting frame 4 and the lifting beam frame 5. The lifting beam frame 5 is for the gantry crane to lift the lifting beam frame 5, the mounting frame 4, and the flexible pressure plate 9. The flexible pressure plate 9 is made of rubber. The mounting bracket 4 and the flexible pressure plate 9 are shaped as follows: Figure 5 As shown.

[0057] like Figure 4 As shown, a plurality of first fixing blocks 202 are fixedly connected to the outer wall of the placement cavity 2, and a pressing device 6 is connected to the top of each first fixing block 202; the pressing device 6 is used to press the mounting bracket 4 onto the placement cavity 2.

[0058] like Figure 7 As shown, the mounting frame 4 is a square frame, and multiple second fixing blocks 401 are fixedly connected to the outer wall of the mounting frame 4. The pressing device 6 and the second fixing blocks 401 are mutually pressed and engaged. The purpose of this arrangement is to press and fix the lifting beam frame 5 and the mounting frame 4 to the first fixing block 202, preventing the lifting beam frame 5, the mounting frame 4 and the flexible pressure plate 9 from shaking.

[0059] An air extraction pipe 7 is installed inside the base 1. One end of the air extraction pipe 7 extends to the outside of the base 1, and the other end connects to the air outlet 203 at the bottom of the placement cavity 2. The purpose of this arrangement is to create a space between the flexible pressure plate 9 suspended above the cross-laminated timber 8 and the placement cavity 2, and to create a negative pressure environment in this space by connecting an external vacuum tank through the air extraction pipe 7. The placement cavity 2 is a cuboid structure with an open top and closed surfaces elsewhere. The bottom of the placement cavity 2 is provided with a lifting through hole and an air outlet 203. The air outlet 203 is a threaded hole for threaded connection with the connector 701. The lifting through hole is surrounded by a sealing element to facilitate sealing and sliding with the lifting plate 305.

[0060] like Figure 8As shown, the extraction pipe 7 includes multiple connectors 701, multiple connecting pipes 702, a connecting pipe 703, and an output pipe 704. The connectors 701 are threaded onto the air outlet 203 of the placement cavity 2. Each connector 701 is threaded onto a connecting pipe 702. The ends of the multiple connecting pipes 702 away from the connectors 701 are connected to the connecting pipe 703. The bottom of the connecting pipe 703 is connected to the output pipe 704. The output pipe 704 passes through a pre-drilled hole in the base 1 and extends to the outside of the base 1. The threaded connection method is designed to facilitate the installation and disassembly of the connectors 701 and connecting pipes 702. During installation, sealant is applied to the threaded connection to seal the joints 701 and connecting pipes 702.

[0061] like Figure 3-4 As shown, the upper surface of the lifting plate 305 is used to place the orthogonal laminated timber 8 that has been coated with glue and is ready to be pressed. The orthogonal laminated timber 8 that has been coated with glue and is ready to be pressed is located inside the placement cavity 2. The bottom inner wall of the placement cavity 2 is provided with multiple grooves 201, and each groove 201 has an air outlet 203 at its bottom. The purpose of this arrangement is to connect the air extraction pipe 7 to an external vacuum tank and extract air to the outside through the air outlet 203.

[0062] like Figure 9-10 As shown, the pressing device 6 includes a mounting plate 601, a vertical plate 603, a pressing block 604, a handle 605, and a clamping screw 607. The mounting plate 601 is connected to the top of the first fixing block 202 by bolts 602. The vertical plate 603 is fixedly connected to the top of the mounting plate 601. An arc groove 6031 is provided in the middle of the top of the vertical plate 603. The left arc corner 6032 of the top of the vertical plate 603 is rotatably connected to the lower right corner of the pressing block 604. The upper right corner of the pressing block 604 is rotatably connected to the first arc protrusion 6051 at one end of the handle 605. A second arc protrusion 6052 is also provided on the handle 605. The second arc protrusion 6052 is rotatably connected to the right arc corner 6033 of the top of the vertical plate 603 by a connecting rod. The pressing block 604 is provided with a through groove, and the clamping screw 607 is connected to the through groove by a nut 606.

[0063] like Figure 9 When the handle 605 is forcefully lowered, the second arc protrusion 6052 of the handle 605 rotates into the arc groove 6031 of the vertical plate 603, thereby causing the pressing block 604 to drive the clamping screw 607 into a vertical state and thus clamp the second fixing block 401.

[0064] like Figure 10 When the handle 605 is lifted forcefully, the first arc protrusion 6051 of the handle 605 rotates into the arc groove 6031 of the vertical plate 603, thereby causing the pressing block 604 to drive the clamping screw 607 to be lifted into a horizontal state.

[0065] The purpose of the nut 606 is to allow for the adjustment of the clamping screw 607 by raising and lowering it, and to engage and fix the clamping screw 607. The clamping screw 607 is positioned on the upper surface of the second fixing block 401, and is used to press against the second fixing block 401. This arrangement is intended to allow the clamping screw 607 to move downwards and press against the second fixing block 402, thus stabilizing the lifting beam 5, the mounting bracket 4, and the flexible pressure plate 9. The pressing device 6 can adopt other existing structures.

[0066] In use, the arranged cross-laminated timber 8 (already coated with glue and ready to be pressed) is placed on the upper surface of the lifting plate 305 as required (the outer dimensions of the cross-laminated timber 8 are smaller than the dimensions of the lifting plate 305). At this time, the lifting plate 305 is located in the lifting through hole of the placement cavity 2, and the cross-laminated timber 8 to be glued is located inside the placement cavity 2. The placement cavity 2 is made with a large area during production to accommodate cross-laminated timber 8 of different sizes for pressing. The top edge of the flexible pressure plate 9 is fixed between the mounting frame 4 and the lifting beam frame 5 using nuts and bolts 602. The lifting beam frame 5, mounting frame 4, and flexible pressure plate 9 are then hoisted above the placement cavity 2 using a gantry crane. At this point, the mounting frame 4 is positioned on top of the placement cavity 2. Under the weight of the lifting beam frame 5 and the mounting frame 4, the flexible pressure plate 9 completely covers and seals the top opening of the placement cavity 2, forming a sealed space between the flexible pressure plate 9 and the placement cavity 2. By turning the handle 605 downwards (in the initial state, the handle 605 of the pressing device 6 is...), the flexible pressure plate 9 can be completely closed. Figure 10The raised state shown will not obstruct the installation of the mounting bracket 4, thereby causing the clamping screw 607 to move downwards as well. The clamping screw 607 and the second fixing block 401 are relatively pressed together, keeping the hanging beam 5, mounting bracket 4 and flexible pressure plate 9 stable. Then, an external vacuum tank is connected through the air extraction pipe 7. The external vacuum tank continuously extracts the internal air of the space between the flexible pressure plate 9 and the placement cavity 2 to the outside of the placement cavity 2, creating a negative pressure system for the space. The flexible pressure plate 9 is made of rubber. The flexible pressure plate 9 will gradually move closer to the cross-laminated wood 8 to be glued. When the bottom of the flexible pressure plate 9 is glued and sealed to the cross-laminated wood 8 to be glued and the placement cavity 2 (this can be recognized by the time the air extraction reaches the preset time). To seal the bottom of the flexible pressure plate 9 against the ortholaminated timber 8 to be glued and the placement cavity 2, the mounting bracket 4 is removed from the hanging beam 5, thereby loosening the top edge of the flexible pressure plate 9. At this time, the internal air of the space is continuously extracted to the outside of the placement cavity 2 through the external vacuum tank. The top edge of the flexible pressure plate 9 will drop slightly and stick to the inner wall of the placement cavity 2. The negative pressure system can provide a more uniform pressure distribution because the flexible pressure plate 9 forms a uniform contact on the surface of the ortholaminated timber 8 to be glued. This helps to ensure that the entire surface of the ortholaminated timber 8 to be glued is subjected to equal force, reducing the uneven compression or deformation that may occur during the pressing process of the ortholaminated timber 8 to be glued.

[0067] After the flexible pressure plate 9 presses the ortholaminated timber 8 together, the output end of the automatic lifting structure 301 retracts, lowering the lifting plate 305 so that the upper surface of the lifting plate 305 and the lower surface of the sliding plate 304 overlap. At this time, the pull rod 303 is pulled, which drives the sliding plate 304 to move outward of the base 1, thereby pulling out the pressed ortholaminated timber 8, making it convenient to remove the ortholaminated timber 8.

[0068] The orthotropic glued laminated timber of this embodiment includes wood plank layers, and multiple wood plank layers are bonded together by adhesive; each wood plank layer is composed of several timber squares arranged in sequence, and the arrangement direction of the timber squares between two adjacent wood plank layers is perpendicular.

[0069] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pressurization method based on a self-releasing stress vacuum pressurization device for orthogonal glued laminated timber, characterized in that: in, The self-releasing stress vacuum pressurization device for orthogonal glulam includes a base (1), a placement chamber (2), a pull-out component (3), a mounting frame (4), a lifting beam frame (5), a pressing device (6), and an air extraction pipe (7); The base (1) has a cavity on its inner side; The bottom of the placement cavity (2) is connected to the top of the base (1) and the bottom of the placement cavity (2) covers the cavity of the base (1). The bottom of the placement cavity (2) is provided with a lifting through hole and an air outlet (203). The pull-out component (3) is located in the cavity of the base (1). The pull-out component (3) includes an automatic lifting structure (301), a slide rail (302), a pull rod (303), a sliding plate (304), and a lifting plate (305). The automatic lifting structure (301) is connected to the inner wall of the cavity of the base (1). The slide rail (302) is fixedly connected to the bottom outer wall of the placement cavity (2). The pull rod (303) and the sliding plate (304) are slidably connected between the two slide rails (302). 3) The tail end is fixedly connected to the sliding plate (304), the head of the pull rod (303) extends to the outside of the base (1), the lifting plate (305) is fixedly connected to the output end of the automatic lifting structure (301), the lifting plate (305) can slide along the lifting through hole at the bottom of the placement cavity (2) and can disengage from the lifting through hole at the bottom of the placement cavity (2), the lifting plate (305) is located in the gap (307) between the pull rod (303) and the sliding plate (304) or above the gap (307); The top of the mounting frame (4), the flexible pressure plate (9), and the hanging beam frame (5) are detachably connected from the outside to the inside. When the mounting frame (4) is placed on the upper surface of the placement cavity (2), the flexible pressure plate (9) can seal and cover the top opening of the placement cavity (2). The outer wall of the placement cavity (2) is connected to a pressing device (6) for pressing the mounting bracket (4) onto the placement cavity (2); One end of the air extraction pipe (7) extends to the outside of the base (1), and the other end is connected to the air outlet at the bottom of the placement cavity (2); Pressurization methods include: Step 1: Place the arranged orthogonal glued timber (8) that has been coated with glue and is ready to be pressed on the upper surface of the lifting plate (305). At this time, the lifting plate (305) is located in the lifting through hole of the placement cavity (2), and the lifting plate (305) is in sealed contact with the lifting through hole of the placement cavity (2) around its perimeter. Step 2: The top of the flexible pressure plate (9) is connected and fixed between the mounting frame (4) and the hanging beam frame (5) through the connector, and is hoisted above the placement cavity (2). At this time, the mounting frame (4) is placed on the top of the placement cavity (2), and the outer walls of the flexible pressure plate (9) cover and seal the top opening of the placement cavity (2). Step 3: Press the mounting bracket (4) onto the placement cavity (2) using the pressing device (6); Step 4: The air extraction pipe (7) is connected to an external vacuum tank. The air inside the space between the flexible pressure plate (9) and the placement cavity (2) is continuously extracted to the outside of the placement cavity (2) through the external vacuum tank to create a negative pressure environment for the space. The flexible pressure plate (9) will gradually move closer to the cross-laminated wood (8) to be pressed. Step 5: After the preset time, remove the connecting parts between the mounting frame (4), the flexible pressure plate (9) and the hanging beam frame (5) to loosen the top of the flexible pressure plate (9); Step 6: Continue to extract air from the inside of the placement chamber (2) through the external vacuum tank. The top of the flexible pressure plate (9) is pressed against the inner wall of the placement chamber (2). The flexible pressure plate (9) forms a uniform contact on the surface of the orthogonal laminated timber (8) to be pressed. The flexible pressure plate (9) presses the orthogonal laminated timber (8). Step 7: After pressing is completed, start the automatic lifting structure (301). The output end of the automatic lifting structure (301) retracts, lowers the lifting plate (305), so that the upper surface of the lifting plate (305) and the lower surface of the sliding plate (304) coincide, and the automatic lifting structure (301) stops retracting. Step 8: The head of the pull rod (303) extends through the reserved hole of the base (1) to the outside of the base (1). Pull the pull rod (303), and the pull rod (303) will drive the sliding plate (304) to move to the outside of the reserved hole on the base (1), thereby pulling out the orthogonal laminated wood (8) pressed on the upper surface of the lifting plate (305).

2. The pressurization method based on the self-releasing stress vacuum pressurization device for orthogonal glued laminated timber according to claim 1, characterized in that: The four inner walls of the mounting bracket (4), the top edge of the flexible pressure plate (9) and the bottom of the hanging beam frame (5) are detachably connected from the outside to the inside by bolts (602). The flexible pressure plate (9) is made of rubber.

3. The pressurization method based on the self-releasing stress vacuum pressurization device for orthogonal glued laminated timber according to claim 1, characterized in that: The pull-out component (3) includes two parallel slide rails (302), the tails of which are fixedly connected by a connecting rod (306); the pull rod (303) is a U-shaped rod, and the two parallel rods in the pull rod (303) are slidably connected to the two slide rails (302) respectively; the automatic lifting structure (301) uses a hydraulic cylinder.

4. The pressurization method based on the self-releasing stress vacuum pressurization device for orthogonal glued laminated timber according to claim 1, characterized in that: There are two pull-out components (3), and the two pull-out components (3) are arranged symmetrically.

5. The pressurization method based on the self-releasing stress vacuum pressurization device for orthogonal glued laminated timber according to claim 1, characterized in that: Multiple first fixing blocks (202) are fixedly connected to the outer wall of the placement cavity (2), and a pressing device (6) is connected to the top of the first fixing block (202).

6. The pressurization method based on the self-releasing stress vacuum pressurization device for orthogonal glued laminated timber according to claim 1, characterized in that: The upper surface of the lifting plate (305) is used to place orthogonal glued timber (8) that has been coated with glue and is ready to be pressed. The orthogonal glued timber (8) is located inside the placement cavity (2). Multiple grooves (201) are provided on the bottom inner wall of the placement cavity (2). Each groove (201) has an air vent (203) at its bottom.

7. The pressurization method based on the self-releasing stress vacuum pressurization device for orthogonal glued laminated timber according to claim 6, characterized in that: The air extraction pipe (7) includes multiple connectors (701), multiple connecting pipes (702), a connecting pipe (703), and an output pipe (704). The connectors (701) are threaded to the air outlet (203) of the placement cavity (2). Each connector (701) is threaded to a connecting pipe (702). The ends of the multiple connecting pipes (702) away from the connectors (701) are connected to the connecting pipe (703). The connecting pipe (703) is connected to the output pipe (704). The output pipe (704) extends to the outside of the base (1).

8. The pressurization method based on the self-releasing stress vacuum pressurization device for orthogonal glued laminated timber according to claim 1, characterized in that: The mounting frame (4) is a square frame, and multiple second fixing blocks (401) are fixedly connected to the outer wall of the mounting frame (4). The pressing device (6) is used to press and cooperate with the second fixing blocks (401).

9. The pressurization method based on the self-releasing stress vacuum pressurization device for orthogonal glued laminated timber according to claim 8, characterized in that: The pressing device (6) includes a mounting plate (601), a vertical plate (603), a pressing block (604), a handle (605), and a clamping screw (607). The mounting plate (601) is connected to the top of the first fixing block (202) by bolts (602). The top of the mounting plate (601) is fixedly connected to the vertical plate (603). An arc groove (6031) is provided in the middle of the top of the vertical plate (603). The left arc corner (6032) of the top of the vertical plate (603) is... The lower right corner of the pressing block (604) is rotatably connected, and the upper right corner of the pressing block (604) is rotatably connected to the first arc protrusion (6051) at one end of the handle (605). The handle (605) is also provided with a second arc protrusion (6052), and the second arc protrusion (6052) is rotatably connected to the right arc corner (6033) at the top of the vertical plate (603) through a connecting rod. The pressing block (604) is provided with a through groove, and the through groove is connected to a clamping screw (607) through a nut (606). When the handle (605) is lowered, the second arc protrusion (6052) of the handle (605) rotates into the arc groove (6031) of the vertical plate (603), thereby causing the pressing block (604) to drive the clamping screw (607) to a vertical state and thus clamp the second fixing block (401). When the handle (605) is lifted, the first arc protrusion (6051) of the handle (605) rotates into the arc groove (6031) of the vertical plate (603), thereby causing the pressing block (604) to drive the clamping screw (607) to be lifted into a horizontal state.

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