CN110905356B - High-stability cabinet door plate and preparation method thereof - Google Patents
High-stability cabinet door plate and preparation method thereof Download PDFInfo
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- CN110905356B CN110905356B CN201911140956.0A CN201911140956A CN110905356B CN 110905356 B CN110905356 B CN 110905356B CN 201911140956 A CN201911140956 A CN 201911140956A CN 110905356 B CN110905356 B CN 110905356B
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B3/72—Door leaves consisting of frame and panels, e.g. of raised panel type
- E06B3/74—Door leaves consisting of frame and panels, e.g. of raised panel type with wooden panels or frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/18—Manufacture or reconditioning of specific semi-finished or finished articles of furniture or of doors
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- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention discloses a high-stability cabinet door plate and a preparation method thereof, and the high-stability cabinet door plate comprises a base plate provided with a door body frame and a door plate core, and a covering plate provided with a balance layer and a decorative layer, wherein the covering plate is attached to the surface of the base plate, the door plate frame covers the door plate core, the door plate core comprises an anti-torsion unit and correction units which are symmetrically distributed by taking the center of the anti-torsion unit as a center, each correction unit comprises a transverse correction unit and a vertical correction unit fixedly connected with the transverse correction unit, a correction sheet and a correction groove are formed by slotting on the single surface of the transverse correction unit along the grain, an anti-torsion groove and a torsion plate sheet are formed by slotting on the double surfaces of the anti-torsion unit, the anti-torsion unit is glued with the correction unit by taking the anti-torsion sheet as a contact surface, the correction groove.
Description
Technical Field
The invention relates to the technical field of artificial boards, in particular to a high-stability cabinet door plate and a preparation method thereof.
Background
The threshold for manufacturing the plate-type furniture is low, the quality of a final product is almost determined by the quality of a plate except hardware, a cabinet and a wardrobe are essential furniture in daily life of people, and the deformation of a door plate of the cabinet and the wardrobe is always a problem that people are very headache.
The deformation of the cabinet door plate is mainly divided into two types, one is false deformation, and the deformation is caused by the change of the use environment. If the window is opened and the window is dry and cold in winter, the door plate is easy to bend towards the direction of the window; in summer, the door plate is easy to bend towards the indoor. However, this deformation tends to stabilize the door over the course of a year's four-season change.
Yet another type of deformation is non-recoverable and the stress relief of the wood is the main cause of such deformation. Wooden boards are highly compressed during hot pressing, resulting in large internal stresses within and between the wood elements. Due to the existence of the residual stress, the plate has a long-time stress release at room temperature, or a rapid residual stress release process at high temperature. Meanwhile, the strength of the local position of the plate is poor, and warping or deformation can be generated at the residual stress position.
The conventional artificial board cannot meet the requirement of consumers for pursuing high quality of life, and a door panel capable of using an ultrahigh cabinet body is urgently needed to be developed to solve the problem that the conventional artificial board generates buckling deformation due to large internal stress.
Disclosure of Invention
In order to solve the problems, the invention provides the high-stability cabinet door plate and the preparation method thereof, which have the advantages of high stability, long service life and wood material saving.
The technical scheme includes that the high-stability cabinet door plate comprises a base plate and a covering plate, wherein the base plate is provided with a door body frame and a door plate core, the covering plate is provided with a balance layer and a decorative layer, the covering plate is attached to the surface of the base plate, the door plate frame comprises the door plate core, the door plate core comprises an anti-torsion unit and correction units which are symmetrically distributed by the center of the anti-torsion unit, each correction unit comprises a transverse correction unit and a vertical correction unit fixedly connected with the transverse correction unit, a correction sheet and a correction groove are formed by grooving on the single surface of the transverse correction unit along grains, an anti-torsion groove and a torsion sheet are formed by grooving on the double surfaces of the anti-torsion unit along grains, the anti-torsion unit is glued with the correction unit by taking the anti-torsion sheet as a contact surface.
Preferably, the included angle between the correcting blade and the torsion resistant blade is 30-60 ℃, the width of the torsion resistant groove is equal to that of the correcting groove, and the width of the torsion resistant blade is equal to that of the trimming plate.
Preferably, the door frame comprises a transverse door frame and a longitudinal door frame, the sum of the thicknesses of the transverse door frames is smaller than 1/3 of the width of the door panel core, and the sum of the thicknesses of the longitudinal door frames is smaller than 1/2 of the width of the door panel core.
Preferably, the transverse correction unit and the vertical correction unit are distributed in central symmetry with the torsion unit.
Preferably, the torsion grooves include a first torsion groove formed by notching one side of the torsion unit, and a second torsion groove formed by notching the other side of the torsion unit, the first torsion groove and the second torsion groove are perpendicular to each other, the torsion pieces include a first torsion piece formed by notching one side of the torsion unit, and a second torsion piece formed by notching the other side of the torsion unit, and the first torsion piece and the second torsion piece are perpendicular to each other.
Further, a preparation method of the high-stability cabinet door plate is also provided, and the preparation method comprises the following steps:
s1, obtaining recombined materials of LVL and LVB structures, and cutting along the grains to obtain door body frame battens with consistent widths;
s2, assembling every two integrated plates in a longitudinal and transverse mode, carrying out cold press molding to obtain an anti-torsion square unit, and slotting the two sides of the anti-torsion square unit along the grain to obtain an anti-torsion unit;
s3, assembling an integrated plate along the grain, carrying out cold press molding to obtain a correction square unit, and slotting the single face of the correction square unit along the grain to obtain a correction unit;
s4, distributing glue, laminating and correcting units in sequence by using the torsion resisting units as central symmetry and the torsion resisting sheets as contact surfaces, performing cold press molding, cutting edges and cutting sheets to obtain a door panel core;
s5, nailing the door body frame lath and the door body core to enable the door body core to be accommodated in a closed space formed by the door body frame lath, sanding and polishing, and maintaining health and balance to obtain a substrate;
s6, laminating and compounding a balance layer material and a facing layer material to obtain a covering panel, compounding the covering panel and the base plate with glue, and maintaining the health and balance to obtain the high-stability cabinet door panel;
preferably, the glue spreading material comprises plate alignment glue and rubber cold-pressing glue, and the glue spreading and standing time is less than 30 min.
Preferably, the health preserving balance condition temperature is 20-30 ℃, the humidity is 35-75%, and the health preserving time is more than 7 days.
Preferably, the cold pressing pressure is 0.4-0.8MPa, and the time is more than or equal to 120 min.
Preferably, the S2 further comprises cutting the torsion units diagonally and splicing different pieces of the torsion units so that the torsion sheets and the correction sheets overlap at an angle of 30-60 ° when the cloth adhesive is laminated.
Compared with the prior art, the beneficial effect of this scheme is as follows:
1. by arranging the correction groove and the anti-torque groove, an inward groove is formed when the anti-torque unit is in gluing contact with the correction unit, so that materials are saved, and the quality of the plate is reduced;
2. the board is mainly deformed by the internal stress of the board and the external environmental conditions, the transverse correction unit and the torsion-resistant unit form inward grooves to block most continuous fibers of the wood without cutting off the board, a large-area board is divided into a plurality of small-area sheets by dividing the area of the board, the internal stress is dispersed to each small-area sheet by a small part of continuous wood fibers, stress concentration can be effectively avoided, the internal stress is dispersed to relieve the deformation of the board, the transverse correction unit and the vertical correction unit mainly play a role in balancing the deformation caused by the external pressure and the tensile force, and the three parts are absent, so that the board can be used for a long time without deformation, not only can be used for preparing a door panel of a conventional length cabinet, but also is suitable for preparing an ultra-long cabinet;
3. the vertical correction unit and the horizontal correction unit form a rigid structure and mainly resist deformation caused by external pressure and tension; the transverse correction unit and the torsion-resistant unit form a flexible structure, and the torsion-resistant capability of the transverse correction unit and the torsion-resistant unit is improved by dispersing internal stress; creep is easy to occur at the edges of the rigid and flexible laminated interfaces, and the transverse correction unit has the rigid performance of pressure resistance and the flexible performance of torsion resistance, so that the rigid and flexible laminated interfaces are perfectly transited, the creep resistance of the plate is improved, and the service life of the product is prolonged;
4. through recombining the wood fibers, the uneven water content caused by concentrated absorption or evaporation of a large number of hydrophilic groups, namely hydroxyl groups, in the fibers to water in air is reduced, and the base plate and the finished plate are subjected to balanced treatment according to strict and reasonable curing conditions, so that the water content of the plate is controlled to be 8-10%, the deviation of the water content of the same plate is +/-1%, and the dimensional stability of the plate is greatly improved;
5. by reasonably controlling the widths of the torsion resistant sheet and the torsion resistant groove on the torsion resistant layer of the substrate and reasonably matching the position of the correction sheet and the adjacent torsion resistant groove, the board can still keep better nail holding capacity and strength due to good symmetry under the condition of reduced density, the door plate of the furniture cabinet customized by the board is firm and durable, the widths of the correction sheet and the torsion resistant sheet are equal, the width of the torsion resistant groove and the width of the correction groove are equal, the running parameters of equipment do not need to be frequently adjusted, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of a manufacturing process of an LVTT door frame;
FIG. 2 shows the arrangement of the door panel core torsion resisting unit and the correcting unit;
FIG. 3 is a front view and a side view of a torsion unit in a door panel core;
FIG. 4 is a front and side view of a transverse direction correction unit in the door panel core;
FIG. 5 is a schematic diagram of a correction unit;
FIG. 6 is a bottom and top view of the torsion unit;
FIG. 7 is a perspective view of the torsion resistant unit and the lateral correction unit glued together;
FIG. 8 is a schematic plan view of the torque cell after cutting and re-splicing;
FIG. 9 is a schematic longitudinal cross-sectional view of a highly stable cabinet door panel;
in the figure: 11. a door frame; 12. a door panel core; 1. a substrate; 21. a balancing layer; 22. a finishing layer; 2. a cover plate; 3. a torsion resistance unit; 4. a correction unit; 41. a lateral correction unit; 42. a vertical correction unit; 411. a correction sheet; 412. a groove is corrected; 31. an anti-torque groove; 32. a twisted sheet; 111. a transverse door frame; 112. a longitudinal door frame; 311. a first anti-torque slot; 312. a second torsion resistant groove; 321. a first torsion resistant sheet; 322. a second torsion resistant sheet.
Detailed Description
The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
In the scheme, the specific steps for preparing the high-stability cabinet door plate are as follows:
i, preparing an LVTT door body frame plate strip:
(1) as shown in fig. 1, an adhesive is uniformly coated on the surface of a veneer, and after the processes of cold pressing, hot pressing, sanding, edge cutting and the like, the veneer is made into an LVL and LVB structural restructuring material, and the texture surface of the veneer inside the structural restructuring material is perpendicular to the surface of the structural restructuring material;
(2) as shown in fig. 9, the recombined material is cut into slats with the same width along the grain direction to obtain door frame slats with the same width, the door frames are positioned around the door core and are respectively distributed in a vertical and horizontal symmetrical manner, namely a transverse door frame and a longitudinal door frame, the sum of the thicknesses of the transverse door frames is smaller than 1/3 of the width of the door core, the sum of the thicknesses of the longitudinal door frames is smaller than 1/2 of the width of the door core, and the splicing angle of the transverse door frame and the longitudinal door frame is 45-90 degrees;
II, preparing a door panel core with a honeycomb wood structure:
A. preparation of a torsion unit:
(3) uniformly coating an adhesive on a single surface of the integrated plate, forming an anti-twisting square unit by every two longitudinal and transverse assemblies, and performing cold press molding, wherein the used adhesive is a plate splicing adhesive or a rubber cold press adhesive, the aging time after the adhesive is distributed is less than or equal to 30min, the cold press pressure is 0.6-0.8Mpa, and the time is more than or equal to 120 min;
(4) as shown in fig. 3 and 6, the torsion-resistant unit is formed by slotting a torsion-resistant groove and a torsion-resistant sheet on two sides of a torsion-resistant square unit along the thread direction, so as to form a torsion-resistant unit, wherein the torsion-resistant groove comprises a first torsion-resistant groove formed by slotting one side of the torsion-resistant unit and a second torsion-resistant groove formed by slotting the other side of the torsion-resistant unit, the first torsion-resistant groove and the second torsion-resistant groove are perpendicular to each other, namely the torsion-resistant grooves on the two sides of the torsion-resistant unit are perpendicular to each other, the width of the torsion-resistant groove is 2-3mm, and the width of the torsion-resistant sheet is 4-6 mm;
(5) cutting along the diagonal line of the anti-torsion unit for splicing again in the subsequent blank assembling process, wherein as shown in fig. 7, the included angle between the anti-torsion sheet of the anti-torsion unit and the corresponding board core plate surface is preferably 30-60 degrees, when the anti-torsion unit is spliced with the transverse correction unit, because the correction unit is slotted along the grain, the included angle between the correction sheet and the corresponding board core plate surface is 0 degree or 90 degrees, when the anti-torsion unit is spliced with the correction unit, the correction sheet is glued by taking the anti-torsion sheet as a contact surface, and the included angle between the anti-torsion sheet and the correction unit is 30-60 degrees;
B. preparation of correction unit:
(6) uniformly coating an adhesive on a single surface of the integrated plate, forming a correction square combination unit with one or more of solid wood, single plates, bamboo-wood composite materials, aluminum strips and other materials along the grain assembly, and performing cold press molding, wherein the used adhesive is splicing plate adhesive or rubber cold press adhesive, the aging time after adhesive distribution is less than or equal to 30min, the cold press pressure is 0.6-0.8Mpa, and the time is more than or equal to 120 min;
(7) slotting the single surface of the integrated material in the combining unit along the grain direction to form a correcting unit, as shown in fig. 4 and 5;
(8) cutting along the grain of the correction unit to ensure that the included angle between the correction sheet and the corresponding board core board surface is 0 degree or 90 degrees for splicing again in the subsequent blank assembling procedure, wherein in two layers of the correction unit, the grooved layer is a transverse correction unit, the non-grooved layer is a vertical correction unit, and the widths of the correction groove and the correction sheet are respectively consistent with the widths of the anti-torsion groove and the anti-torsion sheet;
C. assembly and compounding:
(9) sequentially gluing and laminating the torsion-resistant unit and the correction unit, paying attention to the central symmetry of the structure during assembly, wherein the correction unit is centrosymmetric by taking the torsion-resistant unit as a center, the transverse correction unit and the vertical correction unit are both centrosymmetric and are in alternate contact with the torsion-resistant unit, as shown in figure 2, the contact part of the correction sheet and the torsion-resistant sheet is glued by an adhesive, as shown in figure 8, after the torsion-resistant sheet and the correction sheet are overlapped and laminated, the force of the torsion-resistant sheet with an included angle of 30-60 degrees is ensured to be decomposed into two forces in the horizontal direction and the vertical direction according to a parallelogram principle, when the angle is less than 30 degrees or more than 60 degrees, the force difference is too large in the horizontal direction and the vertical direction, the stability of the stress of the plate is not facilitated, the used adhesive is splicing glue or rubber cold-pressing glue, and the aging time after gluing is not more;
(10) cold pressing in a cold press to form a board core square, and cutting edges around the board core square at a cold pressing pressure of 0.6-0.8MPa for 120min or more;
(11) the plate core is rotated 90 degrees in a combined manner, and the plate core is split according to the thickness requirement of the plate core;
preparing the door plate:
(12) rotating the LVTT door frame lath by 90 degrees to stand on the side, and connecting the LVTT door frame lath with the door plate core of the similar honeycomb wood structure by using a gun nail to manufacture a door plate substrate;
(13) sanding the door panel base material, and carrying out health maintenance and balance;
(14) the panel is prepared by the procedures of glue distribution, cold pressing, hot pressing, sanding, edge cutting and the like of a balance layer and a wood skin, or the panel is prepared by the procedures of hot pressing, sanding, edge cutting and the like of the balance layer and impregnated bond paper, the balance layer is PW, MDF and PB, the thickness is 3.6-5mm, the veneer material is the wood skin or the impregnated bond paper, the impregnated bond paper has the gram weight of 65-130g/m, the gluing amount is 130-170%, the formaldehyde release amount is within 0.06mg/m, the pre-curing degree is 45-65%, the used impregnated bond is urea-formaldehyde resin and melamine modified urea-formaldehyde resin adhesive, the viscosity is 10-15s (25 ℃, coating-4 cups), the cold pressing pressure is 0.6-0.8Mpa, the time is not less than 120min, when the veneer material is the wood skin, the hot pressing pressure is 0.8-1.0Mpa after the cold pressing, the hot pressing time is 300-400s, the hot pressing temperature is 105-115 ℃, when the facing material is impregnated bond paper, the hot pressing pressure is 3.5-5.0MPa, the hot pressing time is 12-14s, and the hot pressing temperature is 190-210 ℃;
(15) the method comprises the steps of compounding a door panel base plate and a covering panel, preparing the cabinet door panel through the processes of glue distribution, cold pressing, sanding, edge cutting and the like, maintaining the balance, wherein the used adhesive is a splicing glue or a rubber cold pressing glue, the aging time after glue distribution is not more than 30min, the cold pressing pressure is 0.4-0.6Mpa, the time is not less than 120min, the maintaining balance condition is that the temperature is 20-30 ℃, the humidity is 35-75%, the space is relatively closed and is kept ventilated, the plate is prevented from being affected with damp and direct sunlight, the moisture content after maintaining is 8-12%, and the deviation of the moisture content of the same plate is within +/-2%.
Hereinafter, the description will be given with reference to specific examples.
Example 1
Preparing an LVTT door frame:
(1) as shown in fig. 1, urea-formaldehyde resin adhesive is uniformly coated on the surface of a veneer, and the veneer is made into a recombined material with an LVL and LVB structure through the working procedures of cold pressing, hot pressing, sanding, edge cutting and the like;
(2) cutting the recombined material into battens with the width of 15mm along the grain direction;
II, preparing a door panel core with a honeycomb wood structure:
A. preparing a torsion-resistant unit:
(3) uniformly coating the single surface of the integrated plate with plate splicing glue, wherein the glue amount is 220 g/square meter, every two blocks of blocks are assembled in a longitudinal and transverse mode to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(4) an anti-torque groove and an anti-torque sheet are arranged on the two sides of the square combination unit along the grain, the width of the anti-torque sheet is 4mm, the width of the anti-torque groove is 2mm, the anti-torque grooves on the front side and the back side are perpendicular to each other, and the anti-torque sheets on the front side and the back side are also perpendicular to each other in the same way;
(5) cutting along the diagonal line of the anti-torsion unit, and splicing again to enable the included angle between the anti-torsion piece of the anti-torsion unit and the corresponding board core plate surface to be 45 degrees;
B. preparation of a correction unit:
(6) uniformly coating the single surface of the integrated plate with the plate alignment adhesive, wherein the adhesive amount is 220 g/square meter, assembling the integrated plate and a thick single plate along with the grain to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(7) slotting the single surface of the laminated wood in the combining unit along the grain, wherein the width of a correction sheet is 4mm, and the width of a correction slot is 2mm to form a correction unit;
(8) cutting along the grain of the correction unit for splicing again in the subsequent blank assembling process, wherein in the two layers of the correction unit, the grooved layer is a transverse correction unit, and the non-grooved layer is a vertical correction unit;
C. assembly and compounding:
(9) as shown in fig. 2, the re-spliced torsion-resistant unit and the correction unit are sequentially glued and laminated, the structural symmetry is noticed during assembly, the correction unit is symmetrical by taking the torsion-resistant unit as a center, the transverse correction unit and the vertical correction unit are alternately contacted with the torsion-resistant unit, and the contact position of the correction sheet and the torsion-resistant sheet is glued by an adhesive;
(10) cold pressing in a cold press at 0.6-0.8Mpa for 120min to obtain a board core square, and cutting edges around the board core square;
(11) the plate core is rotated 90 degrees in the combined direction and cut into a door plate core with the thickness of 15 mm.
Preparing the door plate:
(12) rotating the LVTT door frame lath by 90 degrees to stand on the side, and connecting the LVTT door frame lath with the door plate core of the similar honeycomb wood structure by using a gun nail to manufacture a door plate substrate;
(13) sanding the door panel substrate, and carrying out health maintenance balance, wherein the health maintenance time is more than or equal to 7 days, and the water content is 9-10%;
(14) coating a urea-formaldehyde resin adhesive on one side of a plywood with the thickness of 3.6mm, and performing cold pressing, hot pressing, sanding, edge cutting and other processes on the plywood and natural red oak skin to prepare a covering panel;
(15) uniformly coating the joint surface of the door plate substrate and the cover plate with a plate splicing adhesive, cold pressing within 30min after assembly, and compounding into the cabinet door plate under the conditions that the cold pressing pressure is 0.4-0.6Mpa and the cold pressing time is 360 min;
(16) trimming the periphery of the cabinet door plate, and performing reasonable health preservation, wherein the health preservation balance condition temperature is 20-30 ℃, the humidity is 35-75%, the health preservation time is more than or equal to 7 days, and the water content is 9-10%.
Example 2
Preparing an LVTT door frame:
(1) uniformly coating a urea-formaldehyde resin adhesive on the surface of the veneer, and performing cold pressing, hot pressing, sanding, edge cutting and other processes to prepare the recombined material with the LVL and LVB structures;
(2) cutting the recombined material into laths with the width of 13mm along the grain direction;
II, preparing a door panel core with a honeycomb wood structure:
A. preparing a torsion-resistant unit:
(3) uniformly coating the single surface of the integrated plate with plate splicing glue, wherein the glue amount is 220 g/square meter, every two blocks of blocks are assembled in a longitudinal and transverse mode to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(4) an anti-torque groove and an anti-torque sheet are arranged on the two sides of the square combination unit along the grain, the width of the anti-torque sheet is 6mm, the width of the anti-torque groove is 3mm, the anti-torque unit is formed, the anti-torque grooves on the front side and the back side are vertical to each other, and the anti-torque sheets on the front side and the back side are vertical to each other in the same way;
(5) cutting along the diagonal line of the anti-torsion unit, and splicing again to enable the included angle between the anti-torsion piece of the anti-torsion unit and the corresponding board core plate surface to be 30 degrees;
B. preparation of a correction unit:
(6) uniformly coating the single surface of the integrated plate with the plate alignment adhesive, wherein the adhesive amount is 220 g/square meter, assembling the integrated plate and a thick single plate along with the grain to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(7) slotting the integrated material surface in the combining unit along the grains, wherein the width of a correction sheet is 6mm, and the width of a correction slot is 3mm to form a correction unit;
(8) cutting along the grain of the correction unit for splicing again in the subsequent blank assembling process, wherein in the two layers of the correction unit, the grooved layer is a transverse correction unit, and the non-grooved layer is a vertical correction unit;
C. assembly and compounding:
(9) sequentially gluing and laminating the anti-torsion unit and the correction unit, paying attention to the structural symmetry during assembly, wherein the correction unit is symmetrical by taking the anti-torsion unit as a center, the transverse correction unit and the vertical correction unit are alternately contacted with the anti-torsion unit, and the contact part of the correction sheet and the anti-torsion sheet is bonded by an adhesive;
(10) cold pressing in a cold press at 0.6-0.8Mpa for 120min to obtain a board core square, and cutting edges around the board core square;
(11) the plate core is rotated 90 degrees in the combined direction and cut into the door plate core with the thickness of 13 mm.
Preparing the door plate:
(12) rotating the LVTT door frame lath by 90 degrees to stand on the side, and connecting the LVTT door frame lath with the door plate core of the similar honeycomb wood structure by using a gun nail to manufacture a door plate substrate;
(13) sanding the door board substrate, and carrying out health maintenance balance, wherein the health maintenance time is more than or equal to 7 days, and the water content is 8-10%;
(14) coating a urea-formaldehyde resin adhesive on one side of a 5mm plywood, and performing hot pressing, sanding, edge cutting and other processes on the 5mm plywood and impregnated bond paper to prepare a covering panel, wherein the hot pressing pressure is 3.5-5MPa, the time is 14s, and the temperature is 200 ℃;
(15) uniformly coating yellow glue on the joint surface of the door plate substrate and the cover plate, cold pressing within 15min after assembly, and compounding the door plate of the cabinet under the conditions that the cold pressing pressure is 0.4-0.6Mpa and the cold pressing time is 120 min;
(16) trimming the periphery of the cabinet door plate, and performing reasonable health preservation, wherein the health preservation balance condition temperature is 20-30 ℃, the humidity is 35-75%, the health preservation time is more than or equal to 7 days, and the water content is 8-10%.
Example 3
Preparing an LVTT door frame:
(1) uniformly coating a urea-formaldehyde resin adhesive on the surface of the veneer, and preparing the LVL and LVB structural recombined material through the working procedures of cold pressing, hot pressing, sanding, edge cutting and the like;
(2) cutting the recombined material into battens with the width of 15mm along the grain direction;
II, preparing a door panel core with a honeycomb wood structure:
A. preparing a torsion-resistant unit:
(3) uniformly coating the single surface of the integrated plate with plate splicing glue, wherein the glue amount is 220 g/square meter, every two blocks of blocks are assembled in a longitudinal and transverse mode to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(4) an anti-torque groove and an anti-torque sheet are arranged on the two sides of the square combination unit along the grain, the width of the anti-torque sheet is 4mm, the width of the anti-torque groove is 2mm, the anti-torque grooves on the front side and the back side are perpendicular to each other, and the anti-torque sheets on the front side and the back side are also perpendicular to each other in the same way;
(5) cutting along the diagonal line of the anti-torsion unit, and splicing again to enable the included angle between the anti-torsion piece of the anti-torsion unit and the corresponding board core plate surface to be 60 degrees;
B. preparation of a correction unit:
(6) uniformly coating the single surface of the integrated plate with the plate alignment adhesive, wherein the adhesive amount is 220 g/square meter, assembling the integrated plate and a thick single plate along with the grain to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(7) slotting the single surface of the laminated wood in the combining unit along the grain, wherein the width of a correction sheet is 4mm, and the width of a correction slot is 2mm to form a correction unit;
(8) cutting along the grain of the correction unit for splicing again in the subsequent blank assembling process, wherein in the two layers of the correction unit, the grooved layer is a transverse correction unit, and the non-grooved layer is a vertical correction unit;
C. assembly and compounding:
(9) sequentially distributing adhesive for laminating the spliced anti-torsion units and the spliced correction units, paying attention to structural symmetry during assembly, enabling the correction units to be symmetrical by taking the anti-torsion units as centers, enabling the transverse correction units and the vertical correction units to be in alternate contact with the anti-torsion units, and bonding the contact positions of the correction sheets and the anti-torsion sheets through the adhesive;
(10) cold pressing in a cold press at 0.6-0.8Mpa for 120min to obtain a board core square, and cutting edges around the board core square;
(11) the plate core is rotated 90 degrees in the combined direction and cut into a door plate core with the thickness of 15 mm.
Preparing the door plate:
(12) rotating the LVTT door frame lath by 90 degrees to stand on the side, and connecting the LVTT door frame lath with the door plate core of the similar honeycomb wood structure by using a gun nail to manufacture a door plate substrate;
(13) sanding the door panel substrate, and carrying out health maintenance balance, wherein the health maintenance time is more than or equal to 7 days, and the water content is 9-10%;
(14) coating a urea-formaldehyde resin adhesive on one side of a plywood with the thickness of 3.6mm, and performing cold pressing, hot pressing, sanding, edge cutting and other processes on the plywood and natural red oak skin to prepare a covering panel;
(15) uniformly coating the joint surface of the door plate substrate and the cover plate with a plate splicing adhesive, cold pressing within 30min after assembly, and compounding into the cabinet door plate under the conditions that the cold pressing pressure is 0.4-0.6Mpa and the cold pressing time is 360 min;
(16) trimming the periphery of the cabinet door plate, and performing reasonable health preservation, wherein the health preservation balance condition temperature is 20-30 ℃, the humidity is 35-75%, the health preservation time is more than or equal to 7 days, and the water content is 9-10%.
Example 4
(1) Gluing and assembling: gluing 5 pieces of 1.9mm eucalyptus short-core veneers with soybean glue. The glue amount is 200 g/square meter, the single boards are arranged according to the feeding standard, the single boards are mainly sorted according to the appearance grade, the feeding meeting the standard needs to strictly control the water content. Assembling 5 layers of the coated short cores and 4 layers of the uncoated long cores according to a design scheme, and criss-cross;
(2) cold pressing: cold pressing the assembled plate blank in a cold press for 90min at the pressure of 1.0 MPa;
(3) core repairing: repairing the surface of the cold-pressed plate blank, cutting off the overlapped part, and filling the core lacking part with a core plate with glue;
(4) hot pressing: hot-pressing the cold-pressed plate blank at 120 ℃ for 18min under the pressure of 1.0MPa, and controlling the water content of the hot-pressed plate blank within 10%;
(5) sanding, namely sanding the hot-pressed plate blank with a fixed thickness of 16mm, wherein the sanding belt is 150 meshes.
(6) Scraping putty: filling and leveling the core-lacking part of the board surface by using putty;
(7) sanding: removing redundant putty on the surface by using 240-mesh abrasive belt sand;
(8) cutting edges: and cutting edges of the sanded plate blank.
(9) And (3) respectively pasting 1 piece of 0.1mm impregnated decorative paper on the upper surface and the lower surface of a 16mm substrate, and preparing the 18mm home furnishing board through the processes of gluing, cold pressing, hot pressing and edge cutting. The hot pressing pressure is 0.6MPa, the temperature is 90 ℃, and the time is 480 s.
Example 5
Preparing an LVTT door frame:
(1) uniformly coating a urea-formaldehyde resin adhesive on the surface of the veneer, and preparing the LVL and LVB structural recombined material through the working procedures of cold pressing, hot pressing, sanding, edge cutting and the like;
(2) cutting the recombined material into battens with the width of 15mm along the grain direction;
preparing a correction unit door panel core:
(3) uniformly coating the single surface of the integrated plate with the plate alignment adhesive, wherein the adhesive amount is 220 g/square meter, assembling the integrated plate and a thick single plate along with the grain to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(4) slotting the single surface of the laminated wood in the combining unit along the grain, wherein the width of a correction sheet is 4mm, and the width of a correction slot is 2mm to form a correction unit;
(5) cutting along the grain of the correction unit for splicing again in the subsequent blank assembling process, wherein in the two layers of the correction unit, the grooved layer is a transverse correction unit, and the non-grooved layer is a vertical correction unit;
(6) sequentially distributing adhesive for laminating the correction units, paying attention to structural symmetry during assembly, and bonding by using the adhesive;
(10) cold pressing in a cold press at 0.6-0.8Mpa for 120min to obtain a board core square, and cutting edges around the board core square;
(11) the plate core is rotated 90 degrees in the combined direction and cut into a door plate core with the thickness of 15 mm.
Preparing the door plate:
(12) rotating the LVTT door frame lath by 90 degrees to stand on the side, and connecting the LVTT door frame lath with the correction unit door plate core by using a gun nail to manufacture a door plate substrate;
(13) sanding the door panel substrate, and carrying out health maintenance balance, wherein the health maintenance time is more than or equal to 7 days, and the water content is 9-10%;
(14) coating a urea-formaldehyde resin adhesive on one side of a plywood with the thickness of 3.6mm, and performing cold pressing, hot pressing, sanding, edge cutting and other processes on the plywood and natural red oak skin to prepare a covering panel;
(15) uniformly coating the joint surface of the door plate substrate and the cover plate with a plate splicing adhesive, cold pressing within 30min after assembly, and compounding into the cabinet door plate under the conditions that the cold pressing pressure is 0.4-0.6Mpa and the cold pressing time is 360 min;
(16) trimming the periphery of the cabinet door plate, and performing reasonable health preservation, wherein the health preservation balance condition temperature is 20-30 ℃, the humidity is 35-75%, the health preservation time is more than or equal to 7 days, and the water content is 9-10%.
Example 6
Preparing an LVTT door frame:
(1) uniformly coating a urea-formaldehyde resin adhesive on the surface of the veneer, and preparing the LVL and LVB structural recombined material through the working procedures of cold pressing, hot pressing, sanding, edge cutting and the like;
(2) cutting the recombined material into battens with the width of 15mm along the grain direction;
II, preparing a torsion-resistant unit door panel core:
(3) uniformly coating the single surface of the integrated plate with plate splicing glue, wherein the glue amount is 220 g/square meter, every two blocks of blocks are assembled in a longitudinal and transverse mode to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(4) an anti-torque groove and an anti-torque sheet are arranged on the two sides of the square combination unit along the grain, the width of the anti-torque sheet is 4mm, the width of the anti-torque groove is 2mm, the anti-torque grooves on the front side and the back side are perpendicular to each other, and the anti-torque sheets on the front side and the back side are also perpendicular to each other in the same way;
(5) cutting along the diagonal line of the anti-torsion unit, and splicing again to enable the included angle between the anti-torsion piece of the anti-torsion unit and the corresponding board core plate surface to be 60 degrees;
(6) sequentially distributing and laminating the anti-torsion units, paying attention to structural symmetry during assembly, and bonding through an adhesive;
(7) cold pressing in a cold press at 0.6-0.8Mpa for 120min to obtain a board core square, and cutting edges around the board core square;
(8) the plate core is rotated 90 degrees in the combined direction and cut into a door plate core with the thickness of 15 mm.
Preparing the door plate:
(9) rotating the LVTT door frame lath by 90 degrees to stand on the side, and connecting the LVTT door frame lath with the anti-torsion unit door plate core by using a gun nail to manufacture a door plate substrate;
(10) sanding the door panel substrate, and carrying out health maintenance balance, wherein the health maintenance time is more than or equal to 7 days, and the water content is 9-10%;
(11) coating a urea-formaldehyde resin adhesive on one side of a plywood with the thickness of 3.6mm, and performing cold pressing, hot pressing, sanding, edge cutting and other processes on the plywood and natural red oak skin to prepare a covering panel;
(12) uniformly coating the joint surface of the door plate substrate and the cover plate with a plate splicing adhesive, cold pressing within 30min after assembly, and compounding into the cabinet door plate under the conditions that the cold pressing pressure is 0.4-0.6Mpa and the cold pressing time is 360 min;
(13) trimming the periphery of the cabinet door plate, and performing reasonable health preservation, wherein the health preservation balance condition temperature is 20-30 ℃, the humidity is 35-75%, the health preservation time is more than or equal to 7 days, and the water content is 9-10%.
Example 7
Preparing an LVTT door frame:
(1) uniformly coating a urea-formaldehyde resin adhesive on the surface of the veneer, and preparing the LVL and LVB structural recombined material through the working procedures of cold pressing, hot pressing, sanding, edge cutting and the like;
(2) cutting the recombined material into battens with the width of 15mm along the grain direction;
II, preparing a door panel core with a honeycomb wood structure:
A. preparing a torsion-resistant unit:
(3) uniformly coating the single surface of the integrated plate with plate splicing glue, wherein the glue amount is 220 g/square meter, every two blocks of blocks are assembled in a longitudinal and transverse mode to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(4) an anti-torque groove and an anti-torque sheet are arranged on the two sides of the square combination unit along the grain, the width of the anti-torque sheet is 4mm, the width of the anti-torque groove is 2mm, the anti-torque grooves on the front side and the back side are perpendicular to each other, and the anti-torque sheets on the front side and the back side are also perpendicular to each other in the same way;
(5) cutting along the diagonal line of the anti-torsion unit, and splicing again to enable the included angle between the anti-torsion piece of the anti-torsion unit and the corresponding board core plate surface to be 75 degrees;
B. preparation of a correction unit:
(6) uniformly coating the single surface of the integrated plate with the plate alignment adhesive, wherein the adhesive amount is 220 g/square meter, assembling the integrated plate and a thick single plate along with the grain to form a square unit, putting the square unit into a cold press within 30min, and carrying out cold press molding under the conditions of cold press pressure of 0.6-0.8Mpa and cold press time of 120 min;
(7) slotting the single surface of the laminated wood in the combining unit along the grain, wherein the width of a correction sheet is 4mm, and the width of a correction slot is 2mm to form a correction unit;
(8) cutting along the grain of the correction unit for splicing again in the subsequent blank assembling process, wherein in the two layers of the correction unit, the grooved layer is a transverse correction unit, and the non-grooved layer is a vertical correction unit;
C. assembly and compounding:
(9) sequentially distributing adhesive for laminating the spliced anti-torsion units and the spliced correction units, paying attention to structural symmetry during assembly, enabling the correction units to be symmetrical by taking the anti-torsion units as centers, enabling the transverse correction units and the vertical correction units to be in alternate contact with the anti-torsion units, and bonding the contact positions of the correction sheets and the anti-torsion sheets through the adhesive;
(10) cold pressing in a cold press at 0.6-0.8Mpa for 120min to obtain a board core square, and cutting edges around the board core square;
(11) the plate core is rotated 90 degrees in the combined direction and cut into a door plate core with the thickness of 15 mm.
Preparing the door plate:
(12) rotating the LVTT door frame lath by 90 degrees to stand on the side, and connecting the LVTT door frame lath with the door plate core of the similar honeycomb wood structure by using a gun nail to manufacture a door plate substrate;
(13) sanding the door panel substrate, and carrying out health maintenance balance, wherein the health maintenance time is more than or equal to 7 days, and the water content is 9-10%;
(14) coating a urea-formaldehyde resin adhesive on one side of a plywood with the thickness of 3.6mm, and performing cold pressing, hot pressing, sanding, edge cutting and other processes on the plywood and natural red oak skin to prepare a covering panel;
(15) uniformly coating the joint surface of the door plate substrate and the cover plate with a plate splicing adhesive, cold pressing within 30min after assembly, and compounding into the cabinet door plate under the conditions that the cold pressing pressure is 0.4-0.6Mpa and the cold pressing time is 360 min;
(16) trimming the periphery of the cabinet door plate, and performing reasonable health preservation, wherein the health preservation balance condition temperature is 20-30 ℃, the humidity is 35-75%, the health preservation time is more than or equal to 7 days, and the water content is 9-10%.
Example 8
The screw holding force of the cabinet door panels obtained in examples 1 to 7 was measured according to the method defined in GB/T4897-2003, the elastic modulus of the cabinet door panels obtained in examples 1 to 7 was measured using a WH-ki elastic modulus tester, the static bending strength of the cabinet door panels obtained in examples 1 to 7 was measured by determining the ratio of the bending moment to the bending section modulus of the test pieces at the time of maximum load application using a wood universal mechanical tester, the degree of warping of the cabinet door panels obtained in examples 1 to 7 was measured using a warp tester, and the deviation in water content of the cabinet door panels obtained in examples 1 to 7 was measured using a water content detector, and the results are shown in Table 1.
Table 1 results of performance testing of examples 1-7
The detection results show that the detection values of screw holding force, elastic modulus, specific strength, warping degree and deviation of water content of the plates manufactured by the structure (examples 1, 2 and 3) of the invention are obviously superior to those of the plates not manufactured by the structure of the invention (examples 4, 5, 6 and 7), and the cabinet door plate manufactured by the embodiment has the advantages of strong torsion resistance, high stability, uniform water content, better nail holding capacity and strength, firmness and durability, long service life and wood material saving.
The above mentioned matters are not related, and all the matters are applicable to the prior art.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (6)
1. A high-stability cabinet door panel is characterized by comprising a base plate (1) provided with a door frame (11) and a door panel core (12), and a cover plate (2) provided with a balance layer (21) and a finish coat (22), wherein the cover plate (2) is attached to the surface of the base plate (1), the door frame (11) covers the door panel core (12), the door panel core (12) comprises an anti-torsion unit (3) and correction units (4) symmetrically distributed by the center of the anti-torsion unit (3), the correction units (4) comprise transverse correction units (41) and vertical correction units (42) fixedly connected with the transverse correction units, a correction sheet (411) and a correction groove (412) are formed by grooving on one side of each transverse correction unit (41), an anti-torsion groove (31) and a torsion sheet (32) are formed by grooving on the two sides of the anti-torsion unit (3), and the anti-torsion unit (3) is glued with the correction units (4) by taking the anti-torsion sheet (32) as a contact surface, the correction groove (412) is not parallel to the torsion groove (31); the overlapping included angle of the correction sheet (411) and the torsion resistant sheet (32) is 30-60 degrees, the width of the torsion resistant groove (31) is equal to that of the correction groove (412), and the width of the torsion resistant sheet (32) is equal to that of the correction sheet (411); the transverse correction unit (41) and the vertical correction unit (42) are distributed in central symmetry with the torsion resistant unit (3); the torsion-resistant groove (31) comprises a first torsion-resistant groove (311) formed by slotting one surface of the torsion-resistant unit (3) and a second torsion-resistant groove (312) formed by slotting the other surface of the torsion-resistant unit, the first torsion-resistant groove (311) and the second torsion-resistant groove (312) are perpendicular to each other and are not connected with each other, the torsion-resistant sheet (32) comprises a first torsion-resistant sheet (321) formed by slotting one surface of the torsion-resistant unit (3) and a second torsion-resistant sheet (322) formed by slotting the other surface of the torsion-resistant unit (3), and the first torsion-resistant sheet (321) and the second torsion-resistant sheet (322) are perpendicular to each other and.
2. The door panel of claim 1, wherein the door frame (11) comprises a transverse door frame (111) and a longitudinal door frame (112), the sum of the thicknesses of the transverse door frames (111) is less than 1/3 of the width of the door core (12), and the sum of the thicknesses of the longitudinal door frames (112) is less than 1/2 of the width of the door core (12).
3. A method of making a high stability cabinet door panel as defined in claim 1, comprising the steps of:
s1, obtaining recombined materials of LVL and LVB structures, and cutting along the grains to obtain door body frame (11) slats with consistent widths;
s2, assembling every two integrated plates in a longitudinal and transverse mode, carrying out cold press molding to obtain an anti-torsion square unit, and slotting the two sides of the anti-torsion square unit along the grain to obtain an anti-torsion unit (3);
s3, assembling an integrated plate along the grain, carrying out cold press molding to obtain a correction square unit, and slotting the single face of the correction square unit along the grain to obtain a correction unit (4);
s4, distributing glue, laminating and correcting units (41) in sequence by taking the torsion resisting unit as a central symmetry and the torsion resisting sheet as a contact surface, performing cold press molding, cutting edges and cutting sheets to obtain a door panel core (12);
s5, nailing the door body frame (11) lath and the door body core (12) to enable the door body core (12) to be accommodated in a closed space formed by the door body frame (11) lath, sanding and polishing, and maintaining health and balance to obtain a substrate;
and S6, laminating and compounding a balance layer (21) material and a finishing layer (22) material to obtain a covering panel (2), and coating adhesive on the covering panel (2) and the substrate (1) for compounding, so as to maintain the health and balance, thereby obtaining the high-stability cabinet door panel.
4. The method as claimed in claim 3, wherein the glue spreading material comprises a plate alignment glue and a rubber cold press glue, and the glue spreading aging time is less than 30 min.
5. The method as claimed in claim 3, wherein the curing equilibrium condition is a temperature of 20-30 ℃, a humidity of 35-75%, and a curing time of more than 7 days.
6. The method as claimed in claim 3, wherein the step S2 further comprises cutting the torsion unit (3) diagonally and regrouping to form an included angle of 30-60 ° between the torsion resistant sheet (32) and the correction sheet (411) when the cloth adhesive is laminated.
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