阅读说明：本技术 木纤维方向呈对称交错纵横叠压的实木复合芯板、实木复合板及制作方法 (Solid wood composite core plate with symmetrically staggered and longitudinally and transversely laminated wood fiber directions, solid wood composite plate and manufacturing method ) 是由 王仁忠 袁树荣 王超 于 2020-05-18 设计创作，主要内容包括：本发明是一种木纤维方向呈对称交错纵横叠压的实木复合芯板、实木复合板及制作方法,实木复合芯板包括横向纹芯材和纵向纹芯材,芯板由上下两层芯材单层板叠压而成,每层芯材单层板由N+1/2条芯材单元横向拼接而成,N是芯材单元的条数；每条芯材单元由横向纹芯材单元和一侧或两侧的纵向纹芯条拼接而成,横向纹芯材单元由多条纵向纹板条的边与边相连拼接而成；N+1/2条芯材单元横向拼接时其中二分之一宽的芯材单元位于一侧,并且两边外侧都有纵向纹芯条；上下两层芯材单层板结构相同；上下两层芯材单层板同向交错叠压,即上下两片二分之一宽的芯材单元分布在两侧,使上下两层芯材单层板构成木纤维方向呈对称交错纵横叠压结构；芯材单元的宽度h＝H÷(N+1/2),H是实木复合板芯板整板宽度。(The invention relates to a solid wood composite core plate, a solid wood composite plate and a manufacturing method, wherein the solid wood composite core plate is formed by symmetrically, criss-cross and longitudinally laminated in the wood fiber direction, the solid wood composite core plate comprises a transverse grain core material and a longitudinal grain core material, the core plate is formed by laminating upper and lower layers of core material single-layer plates, each layer of core material single-layer plate is formed by transversely splicing N +1/2 core material units, and N is the number of the core material units; each core material unit is formed by splicing a transverse grain core material unit and longitudinal grain core strips on one side or two sides, and the transverse grain core material unit is formed by splicing the edges of a plurality of longitudinal grain strip strips; when the N +1/2 core material units are transversely spliced, one half of the wide core material unit is positioned on one side, and longitudinal grain core strips are arranged on the outer sides of the two sides; the upper and lower layers of core material single-layer plates have the same structure; the upper and lower layers of core material single-layer plates are laminated in the same direction in a staggered manner, namely, the upper and lower core material units with the width of half of that of the core material units are distributed on two sides, so that the upper and lower layers of core material single-layer plates form a symmetrical staggered and longitudinally laminated structure in the wood fiber direction; the width H of the core material unit is H ÷ (N +1/2), and H is the whole board width of the solid wood composite board core board.)

1. The utility model provides a wood fiber direction is symmetrical crisscross vertical and horizontal stack wood composite core board of pressing, includes horizontal line core and vertical line core, its characterized in that: the core plate is formed by laminating an upper layer of core material single-layer plate and a lower layer of core material single-layer plate, each layer of core material single-layer plate is formed by transversely splicing N +1/2 core material units (1), and N is the number of the core material units (1); each core material unit (1) is formed by splicing a transverse grain core material unit (1a) and longitudinal grain core strips (1b) on one side or two sides, and the transverse grain core material unit (1a) is formed by splicing the edges of a plurality of longitudinal grain laths (1a 1); when the N +1/2 core material units (1) are transversely spliced, the core material unit (1.1) with the width of one half is positioned on one side, and longitudinal grain core strips (1b) are arranged on the outer sides of two sides after splicing; the upper and lower layers of core material single-layer plates have the same structure; the upper and lower layers of core material single-layer plates are laminated in the same direction in a staggered manner, namely, the upper and lower half-width core material units (1.1) are respectively distributed on the left and right sides, so that the longitudinal grain core strips (1b) in the upper and lower layers are arranged in a staggered manner, and the upper and lower layers of core material single-layer plates form a solid wood composite core plate (2) with a symmetrical staggered and longitudinally and transversely laminated structure in the wood fiber direction; the width H of the core material unit (1) is H ÷ (N +1/2), and H is the width of the whole solid wood composite core board.

2. The solid wood composite core board with the wood fiber directions symmetrically staggered and longitudinally laminated according to claim 1, is characterized in that: preferably, N is a positive integer of 5-13.

3. The solid wood composite core board with the wood fiber directions symmetrically staggered and longitudinally laminated according to claim 1 or 2, is characterized in that: the width of the longitudinal grain core strip (1b) is preferably 12-20 mm.

4. The solid wood composite core board with the wood fiber directions symmetrically staggered and longitudinally laminated according to claim 1 or 2, is characterized in that: the thickness of each layer of core material single-layer plate is preferably 7-15 mm.

5. The utility model provides a core material wood fiber direction is crisscross vertical and horizontal lamination's wood composite sheet, includes wood composite core board (2) and panel (3a), its characterized in that: the solid wood composite core board (2) is formed by laminating an upper core material single-layer board and a lower core material single-layer board (2A), each core material single-layer board is formed by transversely splicing N +1/2 core material units (1), and N is the number of the core material units (1); each core material unit (1) is formed by splicing a transverse grain core material unit (1a) and longitudinal grain core strips (1b) on one side or two sides, and the transverse grain core material unit (1a) is formed by splicing the edges of a plurality of longitudinal grain laths (1a 1); when the N +1/2 core material units (1) are transversely spliced, one half of the core material unit (1.1) with the width is positioned on one side, and longitudinal grain core strips (1b) are arranged on the outer sides of two sides after splicing; the upper and lower layers of core material single-layer plates have the same structure; the upper and lower layers of core material single-layer plates are laminated in the same direction in a staggered mode, namely upper and lower half-width core material units (1.1) are distributed on the left side and the right side respectively, longitudinal grain core strips (1b) in the upper and lower layers are arranged in a staggered mode, the upper and lower layers of core material single-layer plates form a solid wood composite core plate (2) with a symmetrical staggered and longitudinally-and-transversely laminated structure in the wood fiber direction, and rare hardwood surface skins (3a) are pasted on the upper and lower surfaces of the solid wood composite core plate (2) to serve as panels; the length of the core material unit (1) is the length of the solid wood composite board; the width H of the core material unit (1) is H ÷ (N +1/2), wherein H is the width of the whole solid wood composite board.

6. The core material wood composite board with the wood fiber directions symmetrically staggered and longitudinally laminated according to claim 5, is characterized in that: preferably, N is a positive integer of 9-15.

7. The core material wood composite board with the symmetrically staggered and criss-cross laminated wood fiber directions according to claim 5 or 6, is characterized in that: the width of the longitudinal grain core strip (1b) is preferably 12-20 mm.

8. The core material wood composite board with the symmetrically staggered and criss-cross laminated wood fiber directions according to claim 5 or 6, is characterized in that: the thickness of each layer of core plate single-layer plate (2A) is preferably 7-15 mm; the thickness of the rare hardwood surface skin (3a) is 1.5-3 mm.

9. A method for manufacturing the solid wood composite core board with the wood fiber directions symmetrically staggered and longitudinally laminated according to any one of claims 1 to 4, comprising the following steps:

manufacturing a transverse core material large plate (A):

(1) preparing materials: selecting a thin plate with the length of 300-1250 mm in the longitudinal grain direction by utilizing various leftover materials, fixing the width of the thin plate by using an edging saw, wherein the width is 50-130 mm, two to three widths can be fixed, fixing the thickness of the thin plate on a single-side thicknesser, the thickness is 7-15 mm, sawing two ends of the thin plate into 90 degrees on a bench saw, and ensuring that the seam clearance is within 2 mm;

(2) the tray of doing with the iron sheet, the tray is long: 2460mm, width: 1240mm, wherein one end and a right-angle edge are provided with a right-angle blocking edge with the height of 6 mm and vertical to the chassis; connecting the end ends of the thin strips with equal width, wherein the length of the thin strips is matched with the width of the tray, coating environment-friendly glue on the two sides of the connected thin strips, taking the right-angle blocking edge of the tray as a reference to enable the edges of the thin strips to be close to the right-angle blocking edge of the wide end of the tray, and arranging the plurality of thin strips in the length of the tray to enable the thin strips to be arranged into a whole piece in the tray;

(3) pushing the tray with the placed thin strips into a press from a feeding frame with a roller, putting one tray on each layer of a multilayer hot press with a lateral pressing device, pressing the tray on the hot press to form a transverse large core material plate (A), wherein the length L of the transverse large core material plate (A) is 2440mm and the processing allowance, and the width H of the transverse large core material plate (A) is 1220mm and the processing allowance;

(4) conveying the transverse core material large board A to a drying kiln for balanced health maintenance;

(II) manufacturing a core unit (1):

(1) manufacturing a transverse grain core unit (1 a):

sawing the transverse core material large plate A into a plurality of transverse grain core material units (1a) along the length direction, namely the direction vertical to the wood grain direction on a multi-blade saw, wherein the width of each transverse grain core material unit (1a) is 50-100 mm;

(2) making a longitudinal grain core strip (1 b): the thickness and the length of the longitudinal grain core strip (1b) are the same as those of the transverse grain core unit (1 a); the width of the longitudinal grain core strip (1b) is 12-20 mm; the longitudinal grain core strip 1b is formed by connecting one or more sections of battens;

(3) production of core material unit (1):

splicing one or two longitudinal grain core strips (1b) at one side or two sides of the transverse grain core material unit (1 a); manufacturing core material units (1) with the width of H/N +1/2, wherein H is the width of the whole solid wood composite board core board, and N is the number of the core material units (1);

(III) manufacturing a single-layer plate of the solid wood composite core plate:

splicing N core material units (1) and one core material unit (1.1) with half width at the adjacent sides of the same surface, wherein one core material unit (1.1) with half width is positioned at one side, enabling a longitudinal grain core strip (1B) to separate transverse grain core material units (1a), and arranging longitudinal grain core strips (1B) at the outer sides of two sides after splicing to manufacture a single-layer plate (2A or 2B) of the solid wood composite core plate;

(IV) manufacturing the solid wood composite core board (2):

laminating two single-layer plates (2A or 2B) of the solid wood composite core plate, wherein two core material units (1.1) with half width are distributed at the left side and the right side, so that longitudinal grain core strips (1B) in the two single-layer plates (2A or 2B) of the solid wood composite core plate are arranged in a staggered manner and are laminated into the solid wood composite core plate (2);

all the procedures adopt formaldehyde-free glue for bonding;

and (V) post-processing.

10. A method for manufacturing the core material wood fiber direction symmetric staggered and longitudinally and transversely laminated solid wood composite board according to any one of claims 5 to 8, which comprises the following steps:

manufacturing a transverse core material large plate (A):

(1) preparing materials: selecting a thin plate with the length of 300-1250 mm in the longitudinal grain direction by utilizing various leftover materials, fixing the width of the thin plate by using an edging saw, wherein the width is 50-130 mm, two to three widths can be fixed, fixing the thickness of the thin plate on a single-side thicknesser, the thickness is 7-15 mm, sawing two ends of the thin plate into 90 degrees on a bench saw, and ensuring that the seam clearance is within 2 mm;

(2) the tray of doing with the iron sheet, the tray is long: 2460mm, width: 1240mm, wherein one end and a right-angle edge are provided with a right-angle blocking edge with the height of 6 mm and vertical to the chassis; connecting the end ends of the thin strips with equal width, wherein the length of the thin strips is matched with the width of the tray, coating environment-friendly glue on the two sides of the connected thin strips, taking the right-angle blocking edge of the tray as a reference to enable the edges of the thin strips to be close to the right-angle blocking edge of the wide end of the tray, and arranging the plurality of thin strips in the length of the tray to enable the thin strips to be arranged into a whole piece in the tray;

(3) pushing the tray with the placed thin strips into a press from a feeding frame with a roller, putting one tray on each layer of a multilayer hot press with a lateral pressing device, pressing the tray on the hot press to form a transverse large core material plate (A), wherein the length L of the transverse large core material plate (A) is 2440mm and the processing allowance, and the width H of the transverse large core material plate (A) is 1220mm and the processing allowance;

(4) conveying the transverse core material large board (A) to a drying kiln for balanced health maintenance;

(II) manufacturing a core unit (1):

(1) manufacturing a transverse grain core unit (1 a):

sawing a transverse core material large plate (A) into a plurality of transverse grain core material units (1a) along the length direction, namely the direction vertical to the wood grain direction on a multi-blade saw, wherein the width of each transverse grain core material unit (1a) is 50-100 mm;

(2) making a longitudinal grain core strip (1 b): the thickness and the length of the longitudinal grain core strip (1b) are the same as those of the transverse grain core unit (1 a); the width of the longitudinal grain core strip (1b) is 12-20 mm; the longitudinal grain core strip (1b) is formed by connecting one or more sections of battens;

(3) production of core material unit (1):

splicing one or two longitudinal grain core strips (1b) at one side or two sides of the transverse grain core material unit (1 a); manufacturing core material units (1) with the width of H/N +1/2, wherein H is the width of the whole solid wood composite board core board, and N is the number of the core material units (1);

(III) manufacturing a veneer unit (3):

laminating the rare hardwood surface skin (3a) and the core material unit (1) to form a veneer unit (3), wherein the thickness of the rare hardwood surface skin (3a) is 1.5-3 mm, and the length and the width of the rare hardwood surface skin are consistent with those of the core material unit (1);

(IV) making a single-layer veneer of a veneered solid wood composite board

Splicing N veneer units (3) and a half-width veneer unit (3.1) at adjacent sides of the same surface, wherein the half-width veneer unit (3.1) is positioned at one side, so that the longitudinal grain core strips (1B) separate the transverse grain core material units (1a), and the longitudinal grain core strips (1B) are arranged at the outer sides of the two sides after splicing to manufacture veneered solid wood composite board single-layer plates (4A, 4B);

(V) manufacturing a solid wood composite board (4):

the core materials of the two veneered solid wood composite board single-layer boards are oppositely laminated, and two veneered single-layer boards (3.1) with half width are distributed on the left side and the right side, so that the longitudinal grain core strips (1b) in the two veneered solid wood composite board single-layer boards (4) are arranged in a staggered manner and are laminated into the solid wood composite board (4);

and (VI) post-processing.

Technical Field

The invention relates to a solid wood composite core plate with symmetrically staggered and longitudinally laminated wood fiber directions, a solid wood composite plate and a manufacturing method, and belongs to the technical field of solid wood composite plates.

Background

Along with the increasing contradiction between supply and demand of wood, people pay attention to the comprehensive utilization of wood from the beginning of the sixties of the last century, and various facing solid wood composite boards spliced and laminated by chemical adhesives have come into play for more than fifty years. At present, all solid wood composite boards on the market are single wood fibers in a longitudinal and transverse structure, most of the solid wood composite boards are formed by laminating three layers of five layers or even more than ten layers of wood fibers in the longitudinal and transverse directions, and the defects of large glue consumption, small bending strength, easy deformation and the like still exist. Because of the over dependence on chemical adhesive, the large amount of glue is used to cause the cell cavities of the wood fibers to be blocked, the natural property of the log with the ventilation function is lost, and meanwhile, the large amount of glue is too high in cost, and the requirement of environmental protection is not met. Therefore, most leftover materials can only be used for burning matches, but the leftover materials are all the most unfortunate.

At present, whether the wood composite board is a multilayer plywood or a three-layer five-layer even-number vertically and horizontally laminated solid wood composite board, each layer of wood fiber is in the same direction, if the wood composite board is cut into a small area, the defect of short wood fiber is not obvious, if the wood composite board is cut into a larger area for use, the bending strength and the internal stress of the board body are still unsatisfactory, and the wood composite board is still easy to deform.

Disclosure of Invention

The invention aims to provide a solid wood composite core plate with symmetrically staggered and longitudinally laminated wood fibers in the direction, a solid wood composite plate and a manufacturing method.

The technical content of the invention is as follows: the solid wood composite core plate with the wood fiber direction in the symmetrical staggered and criss-cross laminated mode comprises a transverse grain core material and a longitudinal grain core material, wherein the core plate is formed by laminating an upper core material single layer plate and a lower core material single layer plate, each core material single layer plate is formed by transversely splicing N +1/2 core material units, and N is the number of the core material units; each core material unit is formed by splicing a transverse grain core material unit and longitudinal grain core strips on one side or two sides, and the transverse grain core material unit is formed by splicing the edges of a plurality of longitudinal grain strip strips; when the N +1/2 core material units are transversely spliced, one half of the wide core material unit is positioned on one side, and longitudinal grain core strips are arranged on the outer sides of the two sides; the upper and lower layers of core material single-layer plates have the same structure; the upper and lower layers of core material single-layer plates are laminated in a staggered mode in the same direction, namely upper and lower half-width core material units are distributed on two sides, so that longitudinal grain core strips in the upper and lower layers are arranged in a staggered mode, and the upper and lower layers of core material single-layer plates form a solid wood composite plate core plate with a symmetrical staggered and longitudinally laminated structure in the wood fiber direction; the width H of the core material unit is H ÷ (N +1/2), and H is the whole board width of the solid wood composite board core board.

Preferably, N is a positive integer of 5-13.

The width of the longitudinal stripe core strip is preferably 12-20 mm.

The thickness of each layer of core material single-layer plate is preferably 7-15 mm.

The invention relates to a solid wood composite board with symmetrically staggered and longitudinally laminated core wood fiber directions, which comprises a solid wood composite core board and a panel, wherein the solid wood composite core board is formed by laminating an upper layer of core material single-layer board and a lower layer of core material single-layer board, each layer of core material single-layer board is formed by transversely splicing N +1/2 core material units, and N is the number of the core material units; each core material unit is formed by splicing a transverse grain core material unit and one or two longitudinal grain core strips, and the transverse grain core material unit is formed by splicing the edges of a plurality of longitudinal grain strips; when the N +1/2 core material units are transversely spliced, one half of the wide core material unit is positioned on one side, and longitudinal grain core strips 1b are arranged on the outer sides of the two sides; the upper and lower layers of core material single-layer plates have the same structure; the upper and lower layers of core material single-layer plates are laminated in a staggered mode in the same direction, namely upper and lower half-width core material units are distributed on the left and right sides, so that longitudinal grain core strips in the upper and lower layers are arranged in a staggered mode, the upper and lower layers of core material single-layer plates form a solid wood composite core plate with a symmetrical, staggered, longitudinally and transversely laminated structure in the wood fiber direction, and rare hardwood surface skins are pasted on the upper and lower surfaces of the solid wood composite core plate to serve as panels; the length of the core material unit is the length of the solid wood composite board; the width H of the core material unit is H/N (N +1/2), and H is the width of the whole solid wood composite board.

Preferably, N is a positive integer of 9-15.

The width of the longitudinal stripe core strip is preferably 12-20 mm.

The thickness of the single-layer plate of each layer of core plate is preferably 7-15 mm; the thickness of the rare hardwood wrapper is 1.5-3 mm.

The invention relates to a method for manufacturing a solid wood composite core plate with symmetrically staggered and longitudinally and transversely laminated wood fiber directions, which comprises the following steps:

manufacturing a transverse core material large plate:

(1) preparing materials: selecting a thin plate with the length of 300-1250 mm in the longitudinal grain direction by utilizing various leftover materials, fixing the width of the thin plate by using an edging saw, wherein the width is 50-130 mm, two to three widths can be fixed, fixing the thickness of the thin plate on a single-side thicknesser, the thickness is 7-15 mm, sawing two ends of the thin plate into 90 degrees on a bench saw, and ensuring that the seam clearance is within 2 mm;

(2) the tray of doing with the iron sheet, the tray is long: 2460mm, width: 1240mm, wherein one end and a right-angle edge are provided with a right-angle blocking edge with the height of 6 mm and vertical to the chassis; connecting the end ends of the thin strips with equal width, wherein the length of the thin strips is matched with the width of the tray, coating environment-friendly glue on the two sides of the connected thin strips, taking the right-angle blocking edge of the tray as a reference to enable the edges of the thin strips to be close to the right-angle blocking edge of the wide end of the tray, and arranging the plurality of thin strips in the length of the tray to enable the thin strips to be arranged into a whole piece in the tray;

(3) pushing the tray with the placed thin strips into a press from a feeding frame with a roller, placing one tray on each layer of a multilayer hot press with a side pressing device, pressing the tray on the hot press to form a transverse large core material plate, wherein the length L of the transverse large core material plate A is 2440mm and the processing allowance, and the width H of the transverse large core material plate is 1220mm and the processing allowance;

(4) conveying the transverse core material large board to a drying kiln for balancing the moisture to 12%;

(II) manufacturing a core unit:

(1) manufacturing a transverse grain core material unit:

sawing the transverse core material large plate into a plurality of transverse grain core material units on a multi-blade saw along the length direction, namely the direction vertical to the wood grain direction, wherein the width of each transverse grain core material unit is 50-100 mm;

(2) manufacturing a longitudinal grain core strip: the thickness and the length of the longitudinal grain core strip are the same as those of the transverse grain core material unit; the width of the longitudinal grain core strip is 12-20 mm; the longitudinal grain core strip can be formed by connecting a plurality of sections of battens;

(3) manufacturing a core material unit:

splicing one or two longitudinal grain core strips on one side or two sides of the transverse grain core material unit respectively; manufacturing core material units with the width of H/N +1/2, wherein H is the width of the whole solid wood composite board core board, and N is the number of the core material units;

(III) manufacturing a single-layer plate of the solid wood composite core plate:

splicing N core material units and one half-width core material unit on adjacent sides of the same surface, wherein the one half-width core material unit is positioned on one side, and longitudinal grain core strips are arranged on the outer sides of two sides to manufacture the solid wood composite core board single-layer board;

(IV) manufacturing a solid wood composite core plate:

laminating two single-layer plates of the solid wood composite core plates, wherein two half-width core material units are distributed on the left side and the right side, so that longitudinal grain core strips in the single-layer plates of the two solid wood composite core plates are arranged in a staggered manner and are laminated into the solid wood composite core plates;

all the procedures adopt formaldehyde-free glue for bonding;

and (V) post-processing.

The invention relates to a method for manufacturing a solid wood composite board with core wood fibers in symmetrical staggered and criss-cross laminated directions, which comprises the following steps:

manufacturing a transverse core material large plate:

(1) preparing materials: selecting a thin plate with the length of 300-1250 mm in the longitudinal grain direction by utilizing various leftover materials, fixing the width of the thin plate by using an edging saw, wherein the width is 50-130 mm, two to three widths can be fixed, fixing the thickness of the thin plate on a single-side thicknesser, the thickness is 7-15 mm, sawing two ends of the thin plate into 90 degrees on a bench saw, and ensuring that the seam clearance is within 2 mm;

(2) the tray of doing with the iron sheet, the tray is long: 2460mm, width: 1240mm, wherein one end and a right-angle edge are provided with a right-angle blocking edge with the height of 6 mm and vertical to the chassis; connecting the end ends of the thin strips with equal width, wherein the length of the thin strips is matched with the width of the tray, coating environment-friendly glue on the two sides of the connected thin strips, taking the right-angle blocking edge of the tray as a reference to enable the edges of the thin strips to be close to the right-angle blocking edge of the wide end of the tray, and arranging the plurality of thin strips in the length of the tray to enable the thin strips to be arranged into a whole piece in the tray;

(3) pushing the tray with the placed thin strips into a press from a feeding frame with a roller, placing one tray on each layer of a multilayer hot press with a side pressing device, pressing the tray on the hot press to form a transverse large core material plate, wherein the length L of the transverse large core material plate is 2440mm and the processing allowance, and the width H of the transverse large core material plate is 1220mm and the processing allowance;

(4) conveying the transverse core material large board to a drying kiln for balanced health maintenance;

(II) manufacturing a core unit:

(1) manufacturing a transverse grain core material unit:

sawing the transverse core material large plate into a plurality of transverse grain core material units on a multi-blade saw along the length direction, namely the direction vertical to the wood grain direction, wherein the width of each transverse grain core material unit is 50-100 mm;

(2) manufacturing a longitudinal grain core strip: the thickness and the length of the longitudinal grain core strip are the same as those of the transverse grain core material unit; the width of the longitudinal grain core strip is 12-20 mm; the longitudinal grain core strip can be formed by connecting a plurality of sections of battens;

(3) manufacturing a core material unit:

splicing one or two longitudinal grain core strips on one side or two sides of the transverse grain core material unit respectively; manufacturing core material units with the width of H/N +1/2, wherein H is the width of the whole solid wood composite board core board, and N is the number of the core material units;

(III) manufacturing a veneer unit:

laminating the rare hardwood surface skin and the core material unit into a veneer unit, wherein the thickness of the rare hardwood surface skin is 1.5-3 mm, and the length and the width of the rare hardwood surface skin are consistent with those of the core material unit;

(IV) manufacturing a single-layer veneer of the veneering solid wood composite board:

splicing N veneer units and a half-width veneer unit at adjacent sides of the same surface, wherein the half-width veneer unit is positioned at one side, so that the longitudinal grain core strips are used for spacing the transverse grain core material units, and the longitudinal grain core strips are arranged at the outer sides of two sides after splicing to manufacture a veneer solid wood composite board single-layer board;

(V) manufacturing a solid wood composite board:

the core materials of the two veneered solid wood composite board single-layer boards are oppositely laminated, and the two veneered single-layer boards which are half as wide are distributed on the left side and the right side, so that the longitudinal grain core strips in the two veneered solid wood composite board single-layer boards are arranged in a staggered manner and are laminated into the solid wood composite board;

all the procedures adopt formaldehyde-free glue for bonding;

and (VI) post-processing.

The invention has the advantages that:

the core material adopts a two-layer laminated structure, is realized by adopting leftover materials, can be manufactured by using short and narrow materials, achieves the purposes of small material and large material and excellent inferior material, and further saves a large amount of wood resources. The two-layer core material single-layer board wood fibers are formed by symmetrically laminating in the longitudinal and transverse directions, in order to ensure that the upper and lower veneering single boards are longitudinally staggered and symmetrical in size during secondary laminating, the upper and lower veneering single boards are respectively provided with a single board with the width of one half, and after the two veneering single boards are laminated, a grid structure is formed, so that the deformation stress of the board body is eliminated to the maximum extent, and the bending strength of the board body is enhanced by several times or even ten times. According to the mechanics principle of wood materials, the shorter the wood fiber is, the smaller the deformation stress is, the adjacent edges of the N core material units and one half of the wide core material unit on the same surface are spliced by the core board, so that the core board can be made of short and narrow materials, and the bending strength of the board body is enhanced. The core materials of the two veneering solid wood composite board single-layer plates are oppositely laminated, and the two veneering single-layer plates which are half wide are distributed on the left side and the right side, so that the longitudinal grain core strips in the two veneering solid wood composite board single-layer plates are arranged in a staggered manner, and the internal stress of the plate body is more balanced.

The board has short stressed wood fiber, symmetrical longitudinal and transverse regionally staggered overlapping, fully utilizes the principles of wood material mechanics and structural mechanics, achieves the effects of balanced board stress, increased static bending strength and improved elastic modulus by changing the fiber layout of the core board, and can be used for making parts with higher requirements, such as cabinet doors with the length of more than 1 meter and 2 meters, and the like. The invention greatly improves the value of the wood for serving human beings and effectively saves the precious resources of the wood, particularly the valuable hardwood. The invention has the advantages of consistent bearing force in the longitudinal and transverse directions due to the unique structure, high outturn rate compared with the common structural board no matter the direction saw is cut when a user uses the board, more superiority in the rectangular size, and capability of improving the utilization rate of wood again.

According to the principles of wood material mechanics and structural mechanics: the longitudinal bending strength of the wood fiber of different wood species is 10-26 times greater than the transverse bending strength of the wood fiber, the shorter the wood fiber is, the smaller the deformation undoubted is, the greater the bending strength is. The wood fibers of the core materials layer by layer are distributed in the longitudinal direction and the transverse direction, and the two core materials are symmetrically staggered after being laminated, so that the design effects of small deformation and high bending strength are achieved.

The two layers of wood fibers of the core plate are restricted with each other, so that the fiber layout with high bending strength and small internal stress deformation is formed, and the stability is good. The cabinet door with the height of more than one meter cannot be bent, which cannot be realized by other structural plates.

The wrapper of the invention can also adopt leftover bits and pieces, thus saving a great deal of valuable wood resources. In particular, when the transverse grain core unit 1a is manufactured, the transverse core large plate a is manufactured first, and waste materials of various widths and lengths can be fully utilized.

The most environment-friendly formaldehyde-free glue is adopted, the price is higher than 30% of that of urea formaldehyde glue, but the core board only uses one layer of glue, the glue consumption is less, the total glue cost is more than 50% of that of glue used for various solid wood composite boards with common structures, and a product which is environment-friendly and high in cost performance can be provided for the society. Drawings

FIG. 1 is a schematic view of a wood composite core board of the present invention, in which wood fibers are laminated in a symmetrical, staggered and vertically and horizontally manner.

Fig. 2 is a schematic view of the wood composite board of the present invention with symmetrically staggered wood fiber directions and laminated vertically and horizontally.

Fig. 3 is a schematic view of a transverse core material large plate a.

Fig. 4 is a schematic view of the lateral grain core unit 1 a.

Fig. 5 is a schematic view of a longitudinal grain core strip 1 b.

Fig. 6 is a schematic view of the core material unit 1.

Fig. 7 is a schematic view of a single layer board of a solid wood composite core board.

Fig. 8 is a schematic view of another embodiment of the core material unit 1.

Fig. 9 is a schematic view of another embodiment of a single layer board of a solid wood composite core board.

Fig. 10 is a schematic view of another embodiment of the wood composite core panel of the present invention having symmetrically staggered cross-plied wood fiber directions.

Fig. 11 is a schematic view of the panel unit 3.

Fig. 12 is a schematic view of a veneered solid wood composite board single layer board 4A.

Fig. 13 is a schematic view of a veneered solid wood composite board single layer board 4B.

Fig. 14 is a schematic view of another embodiment of the present invention of a solid wood composite board with symmetrically staggered and crosslaminated wood fiber directions.

Detailed Description

FIG. 1 is a schematic view of a wood composite core board with symmetrically staggered and longitudinally laminated wood fibers: taking the most common composite board core board as an example: the length of the composite board core board is 2440mm, and the width H is 1220.

The invention relates to a solid wood composite core plate with symmetrical, staggered and longitudinally laminated wood fiber directions, which comprises a transverse grain core material and a longitudinal grain core material, wherein the core plate is formed by laminating an upper core material single-layer plate 2A and a lower core material single-layer plate 2A, each core material single-layer plate is formed by transversely splicing N +1/2 core material units 1, and N is the number of the core material units 1; each core material unit 1 is formed by splicing a transverse grain core material unit 1a and longitudinal grain core strips 1b on one side or two sides, and the transverse grain core material unit 1a is formed by splicing the edges of a plurality of longitudinal grain strip 1a 1; when the N +1/2 core material units 1 are transversely spliced, one half of the wide core material unit 1.1 is positioned on one side, and longitudinal grain core strips 1b are arranged on the outer sides of the two sides; the upper and lower layers of core material single-layer plates have the same structure; the upper and lower layers of core material single-layer plates are laminated in a staggered mode in the same direction, namely upper and lower half-width core material units 1.1 are distributed on two sides, so that longitudinal grain core strips 1b in the upper and lower layers are arranged in a staggered mode, and the upper and lower layers of core material single-layer plates form a solid wood composite plate core plate 2 with a symmetrical staggered and longitudinally and transversely laminated structure in the wood fiber direction; the width H of the core material unit 1 is H ÷ (N +1/2), and H is the whole width of the solid wood composite board core board.

Preferably, N is a positive integer of 5-13.

The width of the longitudinal stripe core strip 1b is preferably 12-20 mm.

The thickness of each layer of the core material single-layer board 2A is preferably 7-15 mm.

FIG. 2 is a schematic view of a wood composite board of the present invention, in which wood fibers are laminated in a symmetrical, staggered and vertically and horizontally manner:

the invention relates to a solid wood composite board with symmetrically staggered and longitudinally laminated core material wood fiber directions, which comprises a solid wood composite core board 2 and a face board 3a, wherein the solid wood composite core board 2 is formed by laminating an upper core material single-layer board 2A and a lower core material single-layer board 2A, each core material single-layer board is formed by transversely splicing N +1/2 core material units 1, and N is the number of the core material units 1; each core material unit 1 is formed by splicing a transverse grain core material unit 1a and longitudinal grain core strips 1b on one side or two sides, and the transverse grain core material unit 1a is formed by splicing the edges of a plurality of longitudinal grain strip 1a 1; when the N +1/2 core material units 1 are transversely spliced, one half of the wide core material unit 1.1 is positioned on one side, and longitudinal grain core strips 1b are arranged on the outer sides of the two sides; the upper and lower layers of core material single-layer plates have the same structure; the upper and lower layers of core material single-layer plates are laminated in a staggered mode in the same direction, namely upper and lower half-width core material units 1.1 are distributed on the left side and the right side, longitudinal grain core strips 1b in the upper and lower layers are arranged in a staggered mode, the upper and lower layers of core material single-layer plates form a solid wood composite core plate 2 with a symmetrical staggered and longitudinally and transversely laminated structure in the wood fiber direction, and rare hardwood surface skins 3a are pasted on the upper and lower surfaces of the solid wood composite core plate 2 to serve as panels; the length of the core material unit 1 is the length of the solid wood composite board; the width H of the core material unit 1 is H ÷ (N +1/2), and H is the width of the whole solid wood composite board.

Preferably, N is a positive integer of 9-15.

The width of the longitudinal stripe core strip 1b is preferably 12-20 mm.

The thickness of each layer of core board single-layer board 2A is preferably 7-15 mm; the thickness of the rare hardwood surface skin 3a is 1.5-3 mm.

The following describes a method for manufacturing a solid wood composite core plate with symmetrically staggered and longitudinally and transversely laminated wood fibers in the directions, with reference to the attached drawings 1 and 3-7, and comprises the following steps:

manufacturing a transverse core material large plate A as shown in FIG. 3:

(1) preparing materials: selecting a thin plate with the length of 300-1250 mm in the longitudinal grain direction by utilizing various leftover materials, fixing the width of the thin plate by using an edging saw, wherein the width is 50-130 mm, two to three widths can be fixed, fixing the thickness of the thin plate on a single-side thicknesser, the thickness is 7-15 mm, sawing two ends of the thin plate into 90 degrees on a bench saw, and ensuring that the seam clearance is within 2 mm;

(2) the tray of doing with the iron sheet, the tray is long: 2460mm, width: 1240mm, wherein one end and a right-angle edge are provided with a right-angle blocking edge with the height of 6 mm and vertical to the chassis; coating environment-friendly glue on two sides of a prepared sheet bar, connecting the end ends of the sheet bar with equal width to meet the width, matching with the width of a tray, taking the right-angle blocking edge of the tray as a reference, blocking the edges of the sheet bar close to the right-angle blocking edge of the wide end of the tray, and arranging a plurality of sheet bars in the length of the tray to enable the sheet bars to be arranged into a whole piece in the tray;

(3) pushing the tray with the placed thin strips into a press from a feeding frame with a roller, putting one tray on each layer of a multilayer hot press with side pressure, pressing the tray on the hot press to form a transverse core material large plate A, wherein the length L of the transverse core material large plate A is 2440mm and the processing allowance, and the width H of the transverse core material large plate A is 1220mm and the processing allowance;

(4) conveying the transverse core material large board A to a drying kiln for balanced health maintenance;

(II) manufacturing a core unit 1:

(1) manufacturing the transverse grain core unit 1a as shown in fig. 4:

sawing the transverse core material large plate A into a plurality of transverse grain core material units 1a along the length direction, namely the direction vertical to the wood grain direction on a multi-blade saw, wherein the width of each transverse grain core material unit 1a is 50-100 mm;

(2) making the longitudinal grain core strip 1b as in fig. 5: the thickness and the length of the longitudinal grain core strip 1b are the same as those of the transverse grain core material unit 1 a; the width of the longitudinal grain core strip 1b is 12-20 mm; the longitudinal grain core strip 1b can be formed by connecting a plurality of sections of battens;

(3) manufacturing the core material unit 1 as shown in fig. 6:

splicing two longitudinal grain core strips 1b on two sides of the transverse grain core material unit 1a respectively; manufacturing a core material unit 1 with the width of H/N (N +1/2), wherein H is the width of the whole solid wood composite board core board, and N is the number of the core material units 1;

(III) manufacturing a single- layer plate 2A or 2B of the solid wood composite core plate:

splicing N veneer units 3 and a veneer unit 3.1 with the width of one half on the adjacent sides of the same surface, wherein the veneer unit 3.1 with the width of one half is positioned at one side, so that the longitudinal grain core strips 1B separate the transverse grain core material units 1a, and the longitudinal grain core strips 1B are arranged on the outer sides of the two sides after splicing to manufacture single- layer plates 4A and 4B of the veneering solid wood composite plate;

(IV) manufacturing the solid wood composite core board 2 shown in the figure 1:

laminating two single-layer plates 2A of the solid wood composite core plate, wherein two half-width core material units 1.1 are distributed at the left side and the right side, so that longitudinal grain core strips 1b in the two single-layer plates 2A of the solid wood composite core plate are arranged in a staggered manner and are laminated into the solid wood composite core plate 2;

all the procedures adopt formaldehyde-free glue for bonding;

(V) post-processing: balancing water content in a drying kiln to 12%, maintaining for 24 hr, fixing thickness on a sander, fixing length and width on a longitudinal and transverse saw, packaging and warehousing.

List of examples of solid wood composite core panels:

fig. 8 to 10 show another embodiment of the solid wood composite core board, the method is basically the same as the above embodiment, when N pieces of core units 1 and one half wide core unit 1.1 are spliced to adjacent edges in the same direction by using the core unit 1 with the longitudinal grain strips 1B on only one side, one half wide core unit 1.1 is positioned on one side, the longitudinal grain strips 1B are used for separating the transverse grain core units 1a, and the longitudinal grain strips 1B are arranged on the outer sides of both sides, as shown in fig. 9, the core unit 1 on the other side corresponding to the half wide core unit 1.1 is used for forming a single layer board 2B of the solid wood composite core board by using 1.2 with the longitudinal grain strips 1B on both sides. The resulting dimensional changes are easily calculated and are not repeated here.

The following describes a method for manufacturing a solid wood composite board with core wood fibers in symmetrical staggered longitudinal and transverse overlapping directions, with reference to the accompanying drawings 2, 3-5 and 11-12, and comprises the following steps:

the steps (I) and (II) of the manufacturing method of the solid wood composite board are the same as the manufacturing method of the solid wood composite core board;

(III) manufacturing a veneer unit 3, wherein FIG. 8 is a schematic diagram of the veneer unit 3:

laminating the rare hardwood surface skin 3a and the core unit 1 to form a veneer unit 3, wherein the thickness of the rare hardwood surface skin 3a is 1.5-3 mm, and the length and the width are consistent with those of the core unit 1;

(IV) manufacturing a veneering solid wood composite board single-layer board 4A shown in figure 9:

splicing N veneering panel units 3 and a half-width veneering panel unit 3.1 at adjacent edges of the same surface, wherein the half-width veneering panel unit 3.1 is positioned at one side, and the outer side of the half-width veneering panel unit is provided with a longitudinal grain core strip 1b to manufacture a veneering solid wood composite board single-layer board 4A;

(V) manufacturing the solid wood composite board 4 shown in the figure 2:

the core materials of the two veneered solid wood composite board single-layer boards 4A are oppositely laminated, and two veneered single-layer boards 3.1 with half width are distributed on two sides, so that the longitudinal grain core strips 1B in the two veneered solid wood composite board single-layer boards 4B are arranged in a staggered manner and are laminated into the solid wood composite board 4;

all the procedures adopt formaldehyde-free glue for bonding;

(VI) post-processing: comprises balancing, maintaining, fixing length and width on a longitudinal saw and a transverse saw, fixing thickness on a sander, packaging and warehousing.

When the solid wood composite core board of another embodiment of the solid wood composite core board of fig. 8 is adopted to manufacture the solid wood composite board, the method is basically the same as the above embodiment, except that only one side of the core material unit 1 is provided with the longitudinal grain core strip 1b, as shown in fig. 8. Fig. 13 is a schematic view of a single-layer board 4B of a veneered solid wood composite board, when the veneering unit 3 and a half-width veneering unit 3.1 are spliced, a half-width core unit 3.1 is positioned at one side, and the longitudinal grain core strip 1B separates the transverse grain core units 1a, and the longitudinal grain core strips 1B are arranged at the outer sides of two sides. And manufacturing the veneering solid wood composite board single-layer board 4B. The core materials of the two veneered solid wood composite board single-layer boards 4B are oppositely laminated, and the two veneered single-layer boards 3.1 with half width are distributed on two sides, so that the longitudinal grain core strips 1B in the two veneered solid wood composite board single-layer boards 4B are arranged in a staggered mode, and the other embodiment is the solid wood composite board which is laminated in a symmetrical, staggered, longitudinal and transverse mode in the wood fiber direction of the figure 14.

The method has the advantage that the flour skin can be made of narrow and rare hardwoods.

List of solid wood composite board embodiments:

the width of the longitudinal stripe core strip on the two sides of the single layer of the composite board core board in all the embodiments is preferably 15-20 mm, and the longitudinal stripe core strip is used as the final trimming allowance of the composite board core board and the solid wood composite board.

The thickness of each layer of core material is preferably 7-15 mm.

Reasons for the preferred width of 5 core elements: comprehensive consideration is more beneficial to the application of small waste materials and the performance effects of small deformation and high bending strength are achieved. Really realize that: the small material is used for large, the inferior material is used for high, and the waste material is used for skillful use.

The core material can be made of scrap and short and narrow thin materials, so that the wood resource is saved to the maximum extent, and the rare hardwood skins can be made of the scrap.

The core of the invention is that the leftover materials are made into two layers of core materials, and the wood fibers are laminated into a grid structure in the symmetrical longitudinal and transverse directions, so that the deformation stress of the plate body is eliminated to the maximum extent, and the bending strength of the plate body is enhanced by multiple times or even tens of times. Therefore, the wood fiber is laminated into a grid structure in the symmetrical longitudinal and transverse directions when the wood fiber is made into two layers of core materials, and the wood fiber and the grid structure all belong to the protection scope of the invention.