Stress self-releasing vacuum pressurizing equipment for cross-laminated wood and pressurizing method of stress self-releasing vacuum pressurizing equipment

Abstract

The invention relates to the technical field of vacuum pressurization orthogonal laminated wood, and discloses stress self-releasing vacuum pressurization equipment for orthogonal laminated wood and a pressurization method thereof.The stress self-releasing vacuum pressurization equipment comprises a base, a containing cavity, a drawing part, a mounting frame, a hanging beam frame and a pressing device, and a flexible pressing plate is mounted between the mounting frame and the hanging beam frame; and the hanging beam frame and the mounting frame are placed on the upper surface of the placing cavity. Through the arrangement of the containing cavity, the flexible pressing plate and the air exhaust pipeline, internal air in the space is continuously extracted to the outside of the containing cavity through the external vacuum tank, a negative pressure environment is created for the space, the negative pressure environment can provide more uniform pressure distribution, and the flexible pressing plate forms uniform contact on the surface of the cross-laminated wood, so that the surface of the cross-laminated wood is more uniform. This helps to ensure that the surface of the entire cross-laminated wood is subjected to equal forces, reducing uneven compression or deformation that may occur during the lamination of the cross-laminated wood.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum pressurizing cross-laminated timber equipment, in particular to self-releasing stress vacuum pressurizing equipment for cross-laminated timber and a pressurizing method thereof. Background Art

[0002] Cross-laminated timber (CLT) is a new type of wood building material. It uses wood squares stacked orthogonally and glued together to form solid wood panels. The area and thickness can be customized. The characteristic of cross-laminated timber is that the wood with staggered horizontal and vertical grains is glued together to achieve better strength.

[0003] In the prior art, the output end of a hydraulic cylinder is usually connected to a steel plate, and the hydraulic cylinder applies pressure to the steel plate, which in turn applies pressure to the cross-laminated timber that has been coated with glue, to achieve gluing of the cross-laminated timber. However, this method uses a hydraulic cylinder as the main tool for applying pressure, which has high energy consumption. In addition, if the pressurized steel plate has poor flatness, when high pressure is applied, it will cause uneven stress distribution of the steel plate, that is, the pressure will not be evenly distributed on the entire surface of the cross-laminated timber, resulting in uneven pressure on the cross-laminated timber during the compression process, causing quality defects such as cracking, delamination or deformation of the cross-laminated timber, which seriously affects 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-stress-releasing vacuum pressurizing device and a pressurizing method for orthogonal glued timber in view of the deficiencies of the above-mentioned prior art. The self-stress-releasing vacuum pressurizing device and the pressurizing method for orthogonal glued timber can apply uniform pressure to the orthogonal glued timber to achieve gluing of the orthogonal glued timber. Compared with the method of applying pressure by hydraulic cylinders in the prior art, the energy consumption is reduced and the entire orthogonal glued timber is more evenly pressurized.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0006] A self-releasing stress vacuum pressurizing device for cross-laminated timber, comprising a base, a placement cavity, a drawer, a mounting frame, a beam hanger, a pressing device and an exhaust pipe;

[0007] A cavity is provided on the inner side of the base;

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

[0009] The drawer is located in the cavity of the base, and the drawer 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 both slidably connected between the two slide rails, the tail of the pull rod is fixedly connected to the sliding plate, 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 be separated from the lifting through hole at the bottom of the placement cavity, and the lifting plate is located in the gap between the pull rod and the sliding plate or above the gap;

[0010] The mounting frame, the top of the flexible pressing plate and the hanging beam frame are detachably connected from the outside to the inside in sequence. When the mounting frame is placed on the upper surface of the placement cavity, the flexible pressing plate can be sealed around the top opening of the placement cavity.

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

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

[0013] As a further improved technical solution of the present invention, the inner walls around 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 improved technical solution of the present invention, the pull-out member includes two slide rails arranged parallel to each other, and the tail ends of the two slide rails 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 respectively slidably connected to the two slide rails; the automatic lifting structure adopts a hydraulic cylinder.

[0015] As a further improved technical solution of the present invention, there are two drawers, and the two drawers are symmetrically arranged.

[0016] As a further improved technical solution 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 block.

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

[0018] As a further improved technical solution of the present invention, the exhaust 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 of the joints is threadedly connected to a connecting pipe, and one end of the multiple connecting pipes away from the joints is 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 improved technical solution of the present invention, the mounting frame is a square frame, a plurality of second fixing blocks are fixedly connected to the outer wall of the mounting frame, and the pressing device is used for mutual extrusion and cooperation with the second fixing blocks.

[0020] As a further improved technical solution of the present invention, the pressing device comprises a mounting plate, a vertical plate, a pressing block, a handle and a clamping screw, the mounting plate is connected to the top of the first fixing block by bolts, the top of the mounting plate is fixedly connected to the vertical plate, an arc groove is provided at the middle position 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 the first arc protrusion at one end of the handle, a second arc protrusion is also provided on the handle, and the second arc protrusion is rotatably connected to the right arc corner of the top of the vertical plate through a connecting rod; the pressing block is provided with a through groove, and the through groove is connected to the clamping screw through a nut;

[0021] When the handle is lowered, the second arc protrusion of the handle rotates into the arc groove of the vertical plate, so that the pressing block drives the pressing screw to a vertical state and then presses 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, so that the pressing block drives the pressing screw to be lifted to a horizontal state.

[0023] In order to achieve the above technical purpose, another technical solution adopted by the present invention is:

[0024] A pressurizing method of a self-releasing stress vacuum pressurizing device for cross-laminated timber, comprising:

[0025] Step 1: Place the arranged cross-laminated timbers that have been coated with glue and are 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 sealing contact with the lifting through hole of the placement cavity around the lifting plate;

[0026] Step 2: Connect and fix the top of the flexible pressing plate between the mounting frame and the hanging beam frame through a connecting piece, and hoist it above the placement cavity. At this time, the mounting frame is placed on the top of the placement cavity, and the outer walls around the flexible pressing plate cover and seal the top opening of the placement cavity;

[0027] Step 3: Press the mounting frame onto the placement cavity by using a pressing device;

[0028] Step 4: The exhaust pipe is connected to an external vacuum tank, and the internal air of the space between the flexible pressing plate and the placement cavity is continuously extracted to the outside of the placement cavity through the external vacuum tank to create a negative pressure environment for the space, and the flexible pressing plate will gradually approach the orthogonal glued timber to be pressed;

[0029] Step 5: After a preset time, the connectors between the mounting frame, the flexible pressing plate and the hanging beam frame are removed to loosen the top of the flexible pressing plate;

[0030] Step 6: Continue to continuously extract the air inside the placement cavity through the external vacuum tank, the top of the flexible pressing plate is closely attached to the inner wall of the placement cavity, the flexible pressing plate forms a uniform contact on the surface of the orthogonal glued timber to be pressed, and the flexible pressing plate presses the orthogonal glued timber;

[0031] Step 7: After the pressing is completed, the automatic lifting structure is started, the output end of the automatic lifting structure is retracted, the lifting plate is lowered, the upper surface of the lifting plate and the lower surface of the sliding plate are overlapped, and the automatic lifting structure stops retracting;

[0032] Step 8. The head of the pull rod passes through the reserved hole of the base and extends to the outside of the base. Pull the pull rod, and the pull rod drives the sliding plate to move to the outside of the reserved hole on the base, thereby pulling out the pressed orthogonal glued timber on the upper surface of the lifting plate.

[0033] The beneficial effects of the present invention are:

[0034] (1) The cross-laminated timber of the present invention is placed on the upper surface of the lifting plate and is located inside the placement cavity. The placement cavity is produced with a larger area to accommodate the compression of cross-laminated timbers of different sizes. The top edge of the rubber is fixedly installed between the mounting frame and the hanging beam frame. The hanging beam frame, the mounting frame and the rubber are hoisted on the top of the placement cavity by a gantry crane. At this time, the outer walls around the rubber seal 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 exhaust pipe, and the internal air of the space is continuously extracted to the outside of the placement cavity through the external vacuum tank to create a negative pressure environment for the space. The rubber will gradually approach the cross-laminated timber. When the bottom of the rubber fits and seals the cross-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 is continuously used to maintain and deepen the negative pressure state in the space. This process causes the upper edge of the rubber to fit closely to the inner wall of the placement cavity, and the entire negative pressure environment ensures the uniform distribution of pressure on the surface of the cross-laminated timber, so that a comprehensive and consistent contact interface is formed between the rubber and the surface of the cross-laminated timber, which not only greatly promotes the uniform transmission of force during the pressing process, but also effectively avoids the problem of excessive local compression, deformation or cracking of the board due to uneven force, thereby significantly improving the pressing quality and consistency of the finished product. The present invention realizes the negative pressure state by exhausting air, realizes the pressing of the cross-laminated timber, and the overall structure has low energy consumption.

[0035] (2) The present invention provides a pull-out piece. After the rubber has pressed the cross-laminated timber, the output end of the hydraulic cylinder contracts to lower the lifting plate so that the upper surface of the lifting plate and the lower surface of the sliding plate overlap. At this time, the pull rod is pulled to drive the sliding plate to move toward the outside of the base, thereby pulling out the pressed cross-laminated timber, making it easier to take out the cross-laminated timber, simplifying the process of taking out the cross-laminated timber, and significantly improving the operating efficiency and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0038] Figure 2 It is a schematic diagram of the three-dimensional structure after the base is hidden in the present invention.

[0039] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention in which the flexible pressing plate is hidden and cross-laminated timber is placed.

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

[0041] Figure 5 It is a schematic structural diagram of the hanging beam frame and the flexible pressing plate of the present invention.

[0042] Figure 6 It is a schematic structural diagram of the drawer of the present invention.

[0043] Figure 7 It is a structural schematic diagram of the mounting frame of the present invention.

[0044] Figure 8 It is a schematic diagram of the structure of the air extraction pipeline of the present invention.

[0045] Fig. 9 It is a schematic structural diagram of the pressing device of the present invention.

[0046] Fig.10 It is a schematic structural diagram of the pressing device of the present invention.

[0047] In the figure:

[0048] 1. Base; 2. Placement cavity; 201. Groove; 202. First fixed block; 203. Air outlet; 3. Pull-out member; 301. Automatic lifting structure; 302. Slide rail; 303. Pull rod; 304. Sliding plate; 305. Lifting plate; 306. Connecting rod; 307. Gap; 4. Mounting frame; 401. Second fixed block; 5. Hanging beam frame; 6. Pressing device; 601. Mounting plate; 602. Bolt; 603 , vertical plate; 6031, arc groove; 6032, left arc corner; 6033, right arc corner; 604, pressing block; 605, handle; 6051, first arc protrusion; 6052, second arc protrusion; 606, nut; 607, tightening screw; 7, exhaust pipe; 701, joint; 702, connecting pipe; 703, connecting pipe; 704, output pipe; 8, orthogonal glued timber; 9, flexible pressure plate. DETAILED DESCRIPTION

[0049] The specific embodiments of the present invention are further described below according to the accompanying drawings:

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 piece 3, a mounting frame 4, a hanging beam frame 5, a pressing device 6, an exhaust pipe 7, and a flexible pressing plate 9.

[0052] A cavity is provided on the inner side of the base 1 ; the cavity is provided for installing the drawer 3 and the exhaust pipe 7 .

[0053] The bottom of the placement cavity 2 is connected to the top of the base 1 and 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, Figure 2 As shown, the drawer 3 is located in the cavity of the base 1, and the drawer 3 includes an automatic lifting structure 301, two slide rails 302 arranged parallel to each other, a pull rod 303, a sliding plate 304 and a lifting plate 305; the automatic lifting structure 301 adopts a hydraulic cylinder, and the working control method of the hydraulic cylinder adopts the 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 the two slide rails 302. 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 tail of the pull rod 303 is fixedly connected to the sliding plate 304, and the head of the pull rod 303 passes through the reserved hole of the base 1 and 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 hole at the bottom of the placement cavity 2 in a sealed manner (the sealing sliding method adopts the existing technology, and a sealing gasket can be installed around the lifting hole at the bottom of the placement cavity 2) and can be separated from the lifting hole at the bottom of the placement cavity 2. The lifting plate 305 is located at the pull rod 303. The purpose of this arrangement is to lower the lifting plate 305 by contracting the output end of the automatic lifting structure 301 after the cross-laminated timber 8 is pressed together by the flexible pressing plate 9, so that the upper surface of the lifting plate 305 and the lower surface of the sliding plate 304 finally overlap, and then pull the pull rod 303 to drive the sliding plate 304 to move toward the outside of the base 1, so that the pressed cross-laminated timber 8 above the lifting plate 305 is pulled out from the reserved hole of the base 1.

[0055] There are two drawers 3, and the two drawers 3 are symmetrically arranged.

[0056] like Figure 5 and 7As shown, the inner wall around the mounting frame 4, the top edge of the flexible pressing plate 9 and the bottom of the hanging beam frame 5 are detachably connected from the outside to the inside by a plurality of bolts 602. In the specific implementation process, 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 pressing plate 9 can be sealed and covered at the top opening of the placement cavity 2. The dimensions of the inner wall around 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 outer dimensions of the flexible pressing 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 pressing plate 9 can be changed according to actual conditions, as long as it can be ensured that the flexible pressing 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 pressing plate 9 and the hanging beam frame 5 is to fix the top edge end of the flexible pressing plate 9 between the mounting frame 4 and the hanging beam frame 5. The hanging beam frame 5 is convenient for the gantry crane to hoist the hanging beam frame 5, the mounting frame 4 and the flexible pressing plate 9. The flexible pressing plate 9 is made of rubber. The shapes of the mounting frame 4 and the flexible pressing plate 9 are as follows: Figure 5 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 frame 4 onto the placement cavity 2 .

[0058] like Figure 7 As shown, the mounting frame 4 is a square frame, and a plurality of second fixing blocks 401 are fixedly connected to the outer wall of the mounting frame 4, and the pressing device 6 and the second fixing blocks 401 are pressed and matched with each other. The purpose of this arrangement is to press and fix the hanging beam frame 5 and the mounting frame 4 with the first fixing block 202 to prevent the hanging beam frame 5, the mounting frame 4 and the flexible pressing plate 9 from shaking.

[0059] An exhaust pipe 7 is installed inside the base 1, one end of the exhaust pipe 7 extends to the outside of the base 1, and the other end is connected to the air outlet 203 at the bottom of the placement chamber 2. The purpose of this arrangement is to hoist the flexible pressing plate 9 above the orthogonal glued timber 8, and form a space between the flexible pressing plate 9 and the placement chamber 2, and create a negative pressure environment for the space by connecting the external vacuum tank through the exhaust pipe 7. The placement chamber 2 is a rectangular parallelepiped structure with an open top and closed surfaces in other parts, and a lifting through hole and an air outlet 203 are provided at the bottom of the placement chamber 2. The air outlet 203 is a threaded hole for threaded connection with the joint 701, and there are seals around the lifting through hole to facilitate sealing and sliding with the lifting plate 305.

[0060] like Figure 8As shown, the exhaust pipe 7 includes multiple joints 701, multiple connecting pipes 702, a connecting pipe 703 and an output pipe 704. The joints 701 are threadedly connected to the air outlet 203 of the placement chamber 2. Each of the joints 701 is threadedly connected to a connecting pipe 702. One end of the multiple connecting pipes 702 away from the joints 701 is 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 the reserved through hole of the base 1 and extends to the outside of the base 1. The purpose of setting the threaded connection method is to facilitate the installation and disassembly of the joints 701 and the connecting pipes 702. When the joints 701 and the connecting pipes 702 are connected and installed, the threaded connection is sealed by applying sealant.

[0061] like Figure 3-4 As shown, the upper surface of the lifting plate 305 is used to place the cross-laminated timber 8 coated with glue and to be pressed, and the cross-laminated timber 8 coated with glue and to be pressed is inside the placement cavity 2. A plurality of grooves 201 are arranged on the bottom inner wall of the placement cavity 2, and an air outlet 203 is opened at the bottom of each groove 201. The purpose of such arrangement is to connect the exhaust pipe 7 to the external vacuum tank to 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 handle 605 and a clamping screw 607. The mounting plate 601 is connected to the top of the first fixed block 202 by a bolt 602. The top of the mounting plate 601 is fixedly connected with the vertical plate 603. A circular arc groove 6031 is provided in the middle position of the top of the vertical plate 603. The left circular arc corner 6032 at 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 circular arc protrusion 6051 at one end of the handle 605. A second circular arc protrusion 6052 is further provided on the handle 605. The second circular arc protrusion 6052 is rotatably connected to the right circular 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 the clamping screw 607 through a nut 606.

[0063] like Fig. 9 When the handle 605 is put down forcefully, the second arc convex block 6052 of the handle 605 rotates into the arc groove 6031 of the vertical plate 603, so that the pressing block 604 drives the pressing screw 607 to a vertical state and then presses the second fixing block 401;

[0064] like Fig.10 When the handle 605 is lifted up with force, the first arc protrusion 6051 of the handle 605 rotates into the arc groove 6031 of the vertical plate 603, so that the pressing block 604 drives the pressing screw 607 to be lifted up to a horizontal state.

[0065] The purpose of the nut 606 is to adjust the lifting and lowering of the clamping screw 607, and the clamping screw 607 is fixed by the nut 606. The clamping screw 607 is used to be on the upper surface of the second fixed block 401, and the clamping screw 607 is used to be pressed and matched with the second fixed block 401. The purpose of this setting is to move the clamping screw 607 downward and press against the second fixed block 402, so that the hanging beam frame 5, the mounting frame 4 and the flexible pressure plate 9 remain stable. The structure of the pressing device 6 can adopt other structures of the prior art.

[0066] When in use, the arranged cross-laminated timbers 8 to be glued (the cross-laminated timbers 8 that have been coated with glue and are to be pressed) are placed on the upper surface of the lifting plate 305 as required (the outer dimensions of the cross-laminated timbers 8 are smaller than the dimensions of the lifting plate 305). At this time, the lifting plate 305 is in the lifting through hole of the placement cavity 2, and the cross-laminated timbers 8 to be glued are located inside the placement cavity 2. The placement cavity 2 adopts a larger area during production to accommodate the pressing of cross-laminated timbers 8 of different sizes to be glued. The top edge of the flexible pressing plate 9 is fixedly installed between the mounting frame 4 and the hanging beam frame 5 by nuts and bolts 602, and the hanging beam frame 5, the mounting frame 4 and the flexible pressing plate 9 are hoisted above the placement cavity 2 by a gantry crane. At this time, the mounting frame 4 is placed on the top of the placement cavity 2. Under the action of the gravity of the hanging beam frame 5 and the mounting frame 4, the flexible pressing plate 9 covers and seals the top opening of the placement cavity 2 on all sides, and a closed space is formed between the flexible pressing plate 9 and the placement cavity 2. By turning the handle 605 downward (in the initial state, the handle 605 of the pressing device 6 is Fig.10The lifted state shown will not hinder the installation of the mounting frame 4), thereby driving the clamping screw 607 to move downward, and the clamping screw 607 and the second fixing block 401 are relatively squeezed to keep the hanging beam frame 5, the mounting frame 4 and the flexible pressing plate 9 stable, and then the external vacuum tank is connected through the exhaust pipe 7, and the internal air of the space between the flexible pressing 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 system for the space. The flexible pressing plate 9 is made of rubber material, and the flexible pressing plate 9 will gradually approach the orthogonal glued timber 8 to be glued, and when the bottom of the flexible pressing plate 9 and the orthogonal glued timber 8 to be glued and the placement cavity 2 are fitted and closed (it can be recognized by the time of extracting air reaching the preset time). In order to seal the bottom of the flexible pressing plate 9 with the cross-laminated timber 8 to be glued and the placement cavity 2, the mounting frame 4 is disassembled from the hanging beam frame 5, thereby loosening the top edge of the flexible pressing 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 pressing plate 9 will drop slightly and fit closely with the inner wall of the placement cavity 2. The negative pressure system can provide a more uniform pressure distribution because the flexible pressing plate 9 forms a uniform contact on the surface of the cross-laminated timber 8 to be glued, which helps to ensure that the entire surface of the cross-laminated timber 8 to be glued is subjected to equal force, thereby reducing the uneven compression or deformation of the cross-laminated timber 8 to be glued during the pressing process.

[0067] After the flexible pressing plate 9 has completed the pressing of the orthogonal glued timber 8, the output end of the automatic lifting structure 301 is contracted to lower 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 to drive the sliding plate 304 to move toward the outside of the base 1, thereby pulling out the pressed orthogonal glued timber 8, thereby facilitating the removal of the orthogonal glued timber 8.

[0068] The cross-laminated timber of this embodiment comprises a wooden board layer, wherein a plurality of wooden board layers are bonded together by colloid; the wooden board layer is composed of a plurality of wooden squares arranged in sequence, and the placement direction of the wooden squares between two adjacent wooden board layers is perpendicular.

[0069] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-releasing stress vacuum pressurizing device for cross-laminated timber, characterized in that: It comprises a base (1), a placement cavity (2), a drawer (3), a mounting frame (4), a hanging beam frame (5), a pressing device (6) and an exhaust pipe (7); A cavity is provided on the inner side of the base (1); 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), and the bottom of the placement cavity (2) is provided with a lifting through hole and an air outlet (203); The drawer (3) is located in the cavity of the base (1), and the drawer (3) comprises 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 both slidably connected between the two slide rails (302), and the pull rod (303) is connected to the inner wall of the cavity (304) of the base (1). 3) 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 hole at the bottom of the placement cavity (2) in a sealed manner and can be separated from the lifting hole at the bottom of the placement cavity (2), and 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 mounting frame (4), the top of the flexible pressing plate (9) and the hanging beam frame (5) are detachably connected from the outside to the inside in sequence. When the mounting frame (4) is placed on the upper surface of the placement cavity (2), the flexible pressing plate (9) can be sealed around the top opening of the placement cavity (2); A pressing device (6) for pressing the mounting frame (4) onto the placement cavity (2) is connected to the outer wall of 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).

2. The self-stress release vacuum pressurizing equipment for cross-laminated timber according to claim 1, characterized in that: The inner walls around the mounting frame (4), the top edge of the flexible pressing plate (9) and the bottom of the hanging beam frame (5) are detachably connected from the outside to the inside via bolts (602), and the flexible pressing plate (9) is made of rubber.

3. The self-stress release vacuum pressurizing equipment for cross-laminated timber according to claim 1, characterized in that: The drawer (3) comprises two slide rails (302) arranged parallel to each other, and the tail ends of the two slide rails (302) are fixedly connected via a connecting rod (306); 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 automatic lifting structure (301) adopts a hydraulic cylinder.

4. The self-stress release vacuum pressurizing equipment for cross-laminated timber according to claim 1, characterized in that: There are two drawer pieces (3), and the two drawer pieces (3) are symmetrically arranged.

5. The self-stress release vacuum pressurizing equipment for cross-laminated timber according to claim 1, characterized in that: 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 the first fixing block (202).

6. The self-stress release vacuum pressurizing equipment for cross-laminated timber according to claim 1, characterized in that: The upper surface of the lifting plate (305) is used to place cross-laminated timber (8) coated with glue and to be pressed, the cross-laminated timber (8) is located inside the placement cavity (2), and a plurality of grooves (201) are arranged on the bottom inner wall of the placement cavity (2), and an air outlet hole (203) is opened at the bottom of each groove (201).

7. The self-stress release vacuum pressurizing equipment for cross-laminated timber according to claim 6, characterized in that: The air extraction pipeline (7) comprises a plurality of joints (701), a plurality of connecting pipes (702), a connecting pipe (703) and an output pipe (704); the joints (701) are threadedly connected to the air outlet (203) of the placement chamber (2); each of the joints (701) is threadedly connected to a connecting pipe (702); one end of the plurality of connecting pipes (702) away from the joints (701) is connected to the connecting pipe (703); the connecting pipe (703) is connected to the output pipe (704); and the output pipe (704) extends to the outside of the base (1).

8. The self-stress release vacuum pressurizing equipment for cross-laminated timber according to claim 1, characterized in that: The mounting frame (4) is a square frame, and a plurality of 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 fit with the second fixing blocks (401).

9. The self-releasing stress vacuum pressurizing equipment for cross-laminated timber according to claim 8, characterized in that: The pressing device (6) comprises a mounting plate (601), a vertical plate (603), a pressing block (604), a handle (605) and a pressing screw (607); the mounting plate (601) is connected to the top of the first fixing block (202) by means of a bolt (602); the top of the mounting plate (601) is fixedly connected to the vertical plate (603); a circular arc groove (6031) is provided at the middle position of the top of the vertical plate (603); a left circular arc corner (6032) at the top of the vertical plate (603) is in contact with the vertical plate (603). 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 convex block (6051) at one end of the handle (605). The handle (605) is also provided with a second arc convex block (6052), and the second arc convex block (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 convex block (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 pressing screw (607) to a vertical state and thereby press 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 pressing screw (607) to be lifted to a horizontal state.

10. A pressurizing method based on the self-releasing stress vacuum pressurizing equipment for cross-laminated timber according to claim 1, characterized in that: include: Step 1, placing the arranged cross-laminated timber (8) coated with glue and to be pressed on the upper surface of the lifting plate (305), at which time the lifting plate (305) is located in the lifting through hole of the placement cavity (2), and the lifting plate (305) is in sealing contact with the lifting through hole of the placement cavity (2) around the lifting plate (305); Step 2: The top of the flexible pressing plate (9) is connected and fixed between the mounting frame (4) and the hanging beam frame (5) through a connecting piece, 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 around the flexible pressing plate (9) cover and seal the top opening of the placement cavity (2); Step 3: Press the mounting frame (4) onto the placement cavity (2) by means of a pressing device (6); Step 4: The exhaust pipe (7) is connected to an external vacuum tank, and the internal air of the space between the flexible pressing 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, and the flexible pressing plate (9) will gradually approach the orthogonal glued timber (8) to be pressed; Step 5: After a preset time, the connecting pieces between the mounting frame (4), the flexible pressing plate (9) and the hanging beam frame (5) are removed, thereby loosening the top of the flexible pressing plate (9); Step 6, continue to continuously extract the air inside the placement chamber (2) through the external vacuum tank, the top of the flexible pressing plate (9) and the inner wall of the placement chamber (2) are closely attached to each other, the flexible pressing plate (9) forms a uniform contact on the surface of the orthogonal glued timber (8) to be pressed, and the flexible pressing plate (9) presses the orthogonal glued timber (8); Step 7: After the pressing is completed, the automatic lifting structure (301) is started, the output end of the automatic lifting structure (301) is retracted, and the lifting plate (305) is lowered, so that the upper surface of the lifting plate (305) and the lower surface of the sliding plate (304) overlap, and the automatic lifting structure (301) stops retracting; Step 8, the head of the pull rod (303) passes through the reserved hole of the base (1) and extends to the outside of the base (1), and the pull rod (303) is pulled, and the pull rod (303) drives the sliding plate (304) to move to the outside of the reserved hole on the base (1), thereby pulling out the pressed orthogonal glued timber (8) on the upper surface of the lifting plate (305).

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