Pre-compression device for improving homogeneity of scrimber and using method of pre-compression device

Abstract

The invention relates to the technical field of scrimber laminated wood, in particular to a pre-compression device for improving the homogeneity of scrimber and a using method of the pre-compression device. The device comprises a pre-compression charging mechanism used for pre-compressing wood bundle materials, a cover plate carrying mechanism used for releasing a cover plate on the pre-compressed materials, and a longitudinal pushing mechanism used for feeding the pre-compressed materials into a forming press from the pre-compression charging mechanism. By using the pre-compression device for improving the homogeneity of the scrimber, the input of manual labor force is reduced, the problems of uneven scrimber forming and the like caused by the heterogeneity of a manual charging individual are avoided, and automatic production without participation of people in the whole process is realized; compared with manual loading, the loading compactness is greatly improved, more compressed materials can be filled in molds and jackets with the same volume, the reconstituted wood keeps the original wood bundle texture continuity, the mechanical property of the reconstituted wood product is improved, the high-quality requirement is met, and the method is an advanced technology for reducing the labor cost and improving the product quality and is suitable for application and popularization.

Description

Technical Field

[0001] The invention relates to the field of reconstituted wood composite material technology, and in particular to a pre-compression device for improving the homogeneity of reconstituted wood and a use method thereof. Background Art

[0002] Reconstructed wood is a new type of wood-based reconstructed material, which is made of fast-growing forest wood as the base material. It is a staggered mesh wood beam square profile made by processes such as rotary disc debonding, glue impregnation and drying, and pressing and thermosetting, while retaining the basic characteristics of the wood and the direction of fiber arrangement. Molded reconstructed wood changes the original material structure, improves the material density and structural strength, and has uniform density. It can produce various specifications of high-strength, high-corrosion, superior performance and high-quality profiles with natural wood texture according to demand.

[0003] The key to its forming is to use a hydraulic press to squeeze the discrete staggered wood bundle material into the mold through the pressure head, and use the mold cover and locking pin to lock the material in the mold cavity. After taking it out of the press, it is sent to a heat treatment kiln to bond and solidify the impregnated base material. After the discrete wood bundles are completely bonded and cooled, they are separated from the mold to form a complete reconstituted wood profile.

[0004] Before pressing, the materials are in the form of strips and bands, and there are air gaps between the stacked layers, which need to be compacted by manual hammering to make the materials compact and neat, so that they can be sent to the press for pressing and forming. However, due to the high labor intensity of manual loading, the compaction degree is limited and uneven, and there are still large air gaps in the materials sent to the press. The quality of reconstituted wood molding is greatly affected by manual loading, and the uniformity and consistency of all products cannot be guaranteed. Summary of the invention

[0005] In order to solve the above problems in the prior art, the present invention provides a pre-compression device for improving the homogeneity of reconstituted wood and a method for using the same.

[0006] In a first aspect, the present invention provides a pre-compression device for improving homogeneity of reconstituted wood, which adopts the following technical solution: A pre-compression device for improving the homogeneity of recombined wood comprises a pre-compression loading mechanism for pre-compressing wood bundle materials, a cover plate conveying mechanism for releasing a cover plate on the pre-compressed materials, and a longitudinal pushing mechanism for sending the pre-compressed materials from the pre-compression loading mechanism into a molding press.

[0007] By adopting the above technical solution, the use of the pre-compression device for improving the homogeneity of reconstituted wood not only reduces the input of manual labor, avoids the problem of uneven molding of reconstituted wood caused by the individual heterogeneity of manual loading, and realizes automated production without human participation throughout the process. More importantly, the use of this device for pre-compression filling and loading, while ensuring uniform and consistent loading, greatly improves the density of the loading compared to manual loading. In the same volume mold and sheath, more compressed materials can be filled, thereby providing the final density of the molded pressed wood square product, so that the reconstituted wood maintains the continuity of the original wood bundle texture, improves the mechanical properties of the reconstituted wood product, and realizes high-quality, high-density product upgrades. It is an advanced technology that reduces labor costs and improves product quality, and is suitable for promotion and use.

[0008] Optionally, the pre-compression loading mechanism includes a pre-compression component for pre-compressing wood bundle materials, a side pushing component for pushing the pre-compressed materials out of the pre-compression component, and a flipping component for receiving the pre-compressed materials. The flipping component is provided with a mold and a molding sleeve for receiving the materials and can be flipped 90°.

[0009] By adopting the above technical solution, after the pre-compression component completes compressing the material, the side push component pushes the material into the flip component, which is received by the mold and the molding sleeve. The overall process is smoothly connected, and the pre-compression and loading process of the material can be realized.

[0010] Optionally, the pre-pressing assembly includes a pre-pressing machine frame for accommodating wood bundle materials, a pre-pressing cylinder is vertically installed on the top of the pre-pressing machine frame, a pre-pressing head is installed at the bottom of the pre-pressing cylinder, a fixed baffle is vertically installed on one side of the pre-pressing machine frame, a yield opening is provided below the fixed baffle, a movable baffle is installed on the other side of the pre-pressing machine frame, a baffle lifting cylinder is vertically installed on the top of the pre-pressing machine frame, and the bottom end of the baffle lifting cylinder is connected to the movable baffle.

[0011] By adopting the above technical solution, the pre-pressing oil cylinder drives the pre-pressing head to descend to compress the material, and the baffle lifting cylinder drives the movable baffle to move upward, thereby facilitating the pushing of the material out of the pre-pressing machine frame.

[0012] Optionally, the side push assembly includes a side push base, a side push box beam is installed on the side push base, a side push cylinder is horizontally installed on the side push box beam, and a side push head for pushing materials is installed at the end of the side push cylinder.

[0013] By adopting the above technical solution, the side push cylinder drives the side push head to move to complete the material pushing work, and the overall process is simple and fast.

[0014] Optionally, the flip assembly includes a hinged U-shaped flip frame, the mold and the molding sleeve are located in the U-shaped flip frame, and the U-shaped flip frame is equipped with a flip cylinder for driving the U-shaped flip frame to flip.

[0015] By adopting the above technical solution, after the material is loaded into the mold and the molding sleeve, the turning cylinder drives the U-shaped turning frame to turn 90 degrees, so as to facilitate the subsequent pushing out of the material.

[0016] Optionally, the cover transporting mechanism includes a cover transporting gantry, which is slidably connected to a reciprocating cover transporting movable beam, a cover transporting movable beam is installed with a cover lifter for adjusting the height of the cover, and a cover magnetic suction frame for adsorbing and releasing the cover is installed at the bottom end of the cover lifter.

[0017] By adopting the above technical solution, the cover plate transporting movable beam can be moved above the material, the position of the cover plate magnetic suction frame can be changed by the cover plate lifter, and the cover plate can be released onto the material by the cover plate magnetic suction frame.

[0018] Optionally, the longitudinal pushing mechanism includes a longitudinal pushing gantry, on which a longitudinal pushing slider that can move back and forth is slidably connected, and on which a longitudinal pushing slider is installed a longitudinal pushing head for pushing the material into the forming press.

[0019] By adopting the above technical solution, the longitudinal push slider can drive the longitudinal push head to move, thereby completing the input of materials and its own resetting.

[0020] In a second aspect, the present invention provides a method for using a pre-compression device for improving homogeneity of reconstituted wood, comprising the following steps: S1, sending the discrete wood bundle material after impregnation and drying into the pre-compression loading mechanism through the material frame for pre-compression; S2, releasing the cover plate onto the pre-compressed material through the cover plate transport mechanism; S3. The pre-compressed material is sent from the pre-compression loading mechanism to the molding press for final compression through the longitudinal pushing mechanism.

[0021] In summary, the present invention includes at least one of the following beneficial technical effects: 1. Reduce the input of manual labor, avoid the problem of uneven molding of reconstituted wood caused by the individual differences of manual loading, and realize automated production without human participation throughout the process; 2. While ensuring uniform and consistent loading, the density of the loading is greatly improved compared with manual loading. More compressed materials can be filled in the same volume mold and sheath, thereby increasing the density of the final formed pressed wood products; 3. Make the reconstructed wood maintain the continuity of the original wood bundle texture, improve the mechanical properties of reconstructed wood products, and achieve high-quality, high-density product upgrades. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall assembly of a pre-compression device for improving homogeneity of reconstituted wood according to an embodiment of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the pre-compression charging mechanism of an embodiment of the present invention.

[0024] Figure 3 It is a schematic structural diagram of a pre-pressing assembly according to an embodiment of the present invention.

[0025] Figure 4 It is a schematic structural diagram of a side thrust assembly according to an embodiment of the present invention.

[0026] Figure 5 It is a schematic structural diagram of a flip assembly according to an embodiment of the present invention.

[0027] Figure 6 It is a structural schematic diagram of a cover plate conveying mechanism according to an embodiment of the present invention.

[0028] Figure 7 It is a schematic structural diagram of the longitudinal pushing mechanism of an embodiment of the present invention.

[0029] Explanation of reference numerals: 1, forming press; 2, pre-compression loading mechanism; 20, pre-compression assembly; 200, pre-compression machine frame; 201, pre-compression cylinder; 202, pre-compression guide column; 203, pre-compression head; 204, fixed baffle; 205, movable baffle; 206, baffle lifting cylinder; 207, lifting cylinder guide column; 21, side thrust assembly; 210, side thrust base; 211, side thrust box beam; 212, side thrust cylinder ; 213, side push guide column; 214, side push push head; 22, flip assembly; 220, U-shaped flip frame; 221, flip cylinder; 222, mold; 223, molding sleeve; 3, cover plate transport mechanism; 30, cover plate transport gantry; 31, cover plate transport movable beam; 32, cover plate lifter; 33, cover plate magnetic suction frame; 4, longitudinal push mechanism; 40, longitudinal push gantry; 41, longitudinal push slider; 42, longitudinal push push head. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 7 The present invention is described in further detail.

[0031] The embodiment of the present invention discloses a pre-compression device for improving the homogeneity of reconstituted wood. Figure 1 A pre-compression device for improving the homogeneity of reconstituted wood is used in conjunction with a forming press 1. The forming press 1 is a four-arch welded frame combined press with wood bundle compression and anti-pin expansion and pin penetration functions. The pre-compression device includes a pre-compression loading mechanism 2 for pre-compressing materials, a cover plate conveying mechanism 3 for releasing the cover plate, and a longitudinal pushing mechanism 4 for feeding the pre-compressed materials into the forming press 1.

[0032] Reference Figure 2 and Figure 3The pre-compression loading mechanism 2 includes a pre-compression assembly 20, a side thrust assembly 21 and a flip assembly 22. The pre-compression assembly 20 includes a pre-compression machine frame 200, which is formed by upper and lower cross beams and columns connected by bolts. A row of pre-compression oil cylinders 201 and two rows of pre-compression guide columns 202 are vertically installed on the cross beams of the pre-compression machine frame 200. The pre-compression oil cylinder 201 is located in the middle position, and the pre-compression guide column 202 is slidably arranged on the top plate of the pre-compression machine frame 200. The bottom ends of the pre-compression oil cylinder 201 and the pre-compression guide column 202 are bolted with a pre-compression head 203 for pre-compressing materials.

[0033] Reference Figure 2 and Figure 3 A fixed baffle 204 is vertically installed on one side of the pre-pressing machine frame 200, and a clearance opening is set below the fixed baffle 204. A movable baffle 205 that can move up and down is installed on the other side of the pre-pressing machine frame 200. A baffle lifting cylinder 206 and a lifting cylinder guide column 207 are vertically installed on the pre-pressing machine frame 200. The bottom ends of the baffle lifting cylinder 206 and the lifting cylinder guide column 207 are connected to the movable baffle 205. The lifting cylinder guide column 207 is penetrated by the movable baffle 205 to facilitate the stable up and down movement of the movable baffle 205.

[0034] Reference Figure 2 and Figure 4 The side push assembly 21 includes a side push base 210, which is bolted to the bottom of the pre-press frame 200, and a side push box beam 211 is bolted to the side push base 210, and a plurality of side push cylinders 212 and a plurality of side push guide columns 213 are horizontally installed on the side push box beam 211, and the side push guide columns 213 are slidably penetrated in the side push box beam 211, and a side push head 214 for horizontally pushing materials is jointly installed at the ends of the side push guide columns 213 and the side push cylinders 212, and the side push head 214 is initially located in the yield opening.

[0035] Reference Figure 2 and Figure 5 The flip assembly 22 includes a U-shaped flip frame 220, which is hinged to one end of the side push base 210 away from the side push box beam 211. A flip cylinder 221 is hinged between the U-shaped flip frame 220 and the middle of the side push base 210. The flip cylinder 221 can drive the U-shaped flip frame 220 to convert from a horizontal lying position to an upright position. A mold 222 and a molding sleeve 223 are installed in the U-shaped flip frame 220 from the inside to the outside.

[0036] Reference Figure 1 and Figure 6The cover plate transporting mechanism 3 includes a cover plate transporting gantry 30, on which two linear guides with racks are installed, and a cover plate transporting movable beam 31 is installed between the two linear guides, and a motor is installed on the cover plate transporting movable beam 31, and a gear for matching the rack is installed at the output end of the motor, so as to realize the reciprocating movement of the cover plate transporting movable beam 31 on the cover plate transporting gantry 30; a plurality of cover plate lifters 32 are vertically installed on the cover plate transporting movable beam 31, and the cover plate lifters 32 are driven by a motor to reciprocate up and down by gears meshing with racks, and are guided by rollers and guide plates installed around them; a cover plate magnetic suction frame 33 is installed at the bottom end of the cover plate lifter 32, which uses an electromagnet to switch on and off, absorb and release the cover.

[0037] Reference Figure 1 and Figure 7 The longitudinal pushing mechanism 4 includes a longitudinal pushing gantry 40 and a longitudinal pushing slider 41. The longitudinal pushing gantry 40 is equipped with a rack and a linear guide rail. The longitudinal pushing slider 41 is driven to move back and forth by a motor-driven gear. A longitudinal pushing head 42 is installed at the bottom of the longitudinal pushing slider 41. The size of the longitudinal pushing head 42 can be extended into the U-shaped turning frame 220 to push the mold 222 and the molding sleeve 223 into the molding press 1.

[0038] A method for using a pre-compression device for improving homogeneity of reconstituted wood according to an embodiment of the present invention comprises the following steps: S1. The discrete wood bundle materials after impregnation and drying are sent into the pre-pressing machine frame 200 through the material frame, and the pre-pressing oil cylinder 201 is started. The pre-pressing head 203 descends to squeeze the wood bundle materials to reduce the air gap between the wood bundles. This process is limited by the fixed baffle 204 and the movable baffle 205 to prevent the material from leaking out and realize the uniform and dense compression of the material. After the pre-pressing is completed, the movable baffle 205 is lifted by the baffle lifting cylinder 206; S2, start the side push cylinder 212 to push the pre-pressed material into the mold 222 and the forming sleeve 223. This process ensures the uniformity and consistency of the wood bundle filling in the mold 222 and the forming sleeve 223. Start the turning cylinder 221 to turn the U-shaped turning frame 220 90° to a vertical state; S3, control the cover plate transporting movable beam 31 to move to the top of the U-shaped turning frame 220, control the cover plate lifter 32 to lower the cover plate magnetic suction frame 33 with the cover plate sucked to the top of the wood bundle material and release the cover plate; S4, control the longitudinal push slider 41 to drive the longitudinal push push head 42 to move, the longitudinal push push head 42 pushes the mold 222 and the forming sheath 223 into the forming press 1, the forming press 1 pressure head presses down, presses the cover plate from the forming sheath 223 into the mold 222, and at the same time, the compressed wood bundle is further compressed into a wooden square as the cover plate is pressed down, and the wooden square is imprisoned between the mold 222 and the cover plate by the anti-expansion pin. After heat treatment and curing, the wooden square can be removed from the mold 222 to form a reconstituted wood profile.

[0039] The use of the pre-compression device for improving the homogeneity of reconstituted wood not only reduces the input of manual labor, avoids the problem of uneven molding of reconstituted wood caused by the individual heterogeneity of manual loading, and realizes automated production without human participation throughout the process. More importantly, the use of this device for pre-compression filling and loading, while ensuring uniform and consistent loading, greatly improves the density of the loading compared to manual loading. In the same volume mold and sheath, more compressed materials can be filled, thereby providing the final density of the molded pressed wood square product, so that the reconstituted wood maintains the continuity of the original wood bundle texture, improves the mechanical properties of the reconstituted wood product, and realizes the upgrade of high-quality and high-density products. It is an advanced technology that reduces labor costs and improves product quality, and is suitable for promotion and use.

[0040] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-compression device for improving homogeneity of reconstituted wood, characterized by: The invention comprises a pre-compression loading mechanism (2) for pre-compressing wood bundle materials, a cover plate conveying mechanism (3) for releasing a cover plate on the pre-compressed materials, and a longitudinal pushing mechanism (4) for conveying the pre-compressed materials from the pre-compression loading mechanism (2) into a forming press (1).

2. The pre-compression device for improving homogeneity of reconstituted wood according to claim 1, characterized in that: The pre-compression loading mechanism (2) comprises a pre-compression component (20) for pre-compressing wood bundle materials, a side push component (21) for pushing the pre-compressed materials out of the pre-compression component (20), and a turnover component (22) for receiving the pre-compressed materials. The turnover component (22) is provided with a mold (222) for receiving the materials and capable of being turned 90 degrees and a forming sleeve (223).

3. The pre-compression device for improving homogeneity of reconstituted wood according to claim 2, characterized in that: The pre-pressing assembly (20) comprises a pre-pressing machine frame (200) for accommodating wood bundle materials, a pre-pressing oil cylinder (201) is vertically installed on the top of the pre-pressing machine frame (200), a pre-pressing head (203) is installed at the bottom of the pre-pressing oil cylinder (201), a fixed baffle (204) is vertically installed on one side of the pre-pressing machine frame (200), a clearance opening is arranged below the fixed baffle (204), a movable baffle (205) is installed on the other side of the pre-pressing machine frame (200), a baffle lifting cylinder (206) is vertically installed on the top of the pre-pressing machine frame (200), and the bottom end of the baffle lifting cylinder (206) is connected to the movable baffle (205).

4. The pre-compression device for improving homogeneity of reconstituted wood according to claim 2, characterized in that: The side push assembly (21) comprises a side push base (210), a side push box beam (211) is mounted on the side push base (210), a side push oil cylinder (212) is horizontally mounted on the side push box beam (211), and a side push head (214) for pushing materials is mounted at the end of the side push oil cylinder (212).

5. The pre-compression device for improving homogeneity of reconstituted wood according to claim 2, characterized in that: The turning assembly (22) comprises a hinged U-shaped turning frame (220), a mold (222) and a molding sleeve (223) are located inside the U-shaped turning frame (220), and the U-shaped turning frame (220) is equipped with a turning cylinder (221) for driving the U-shaped turning frame (220) to turn over.

6. The pre-compression device for improving homogeneity of reconstituted wood according to claim 1, characterized in that: The cover plate transport mechanism (3) comprises a cover plate transport gantry (30), a cover plate transport movable beam (31) which is slidably connected to the cover plate transport gantry (30), a cover plate lifter (32) for adjusting the height of the cover plate is installed on the cover plate transport movable beam (31), and a cover plate magnetic suction frame (33) for adsorbing and releasing the cover plate is installed at the bottom end of the cover plate lifter (32).

7. The pre-compression device for improving homogeneity of reconstituted wood according to claim 1, characterized in that: The longitudinal pushing mechanism (4) comprises a longitudinal pushing gantry (40), a longitudinal pushing slider (41) being slidably connected to the longitudinal pushing gantry (40) and being reciprocatably movable, and a longitudinal pushing head (42) for pushing materials into the molding press (1) being mounted on the longitudinal pushing slider (41).

8. A method for using the pre-compression device for improving homogeneity of reconstituted wood according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, sending the discrete wood bundle material after impregnation and drying into the pre-compression loading mechanism (2) through the material frame for pre-compression; S2, releasing the cover plate onto the pre-compressed material through the cover plate transport mechanism (3); S3. The pre-compressed material is sent from the pre-compression loading mechanism (2) to the molding press (1) for final compression by the longitudinal pushing mechanism (4).

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