Patent Application
20200147828
The present application relates to a board core of an artificial board and a method for manufacturing the same, and belongs to the technical field of wood product processing.
Due to the shortage of wood resources and the high price of solid wood, artificial boards emerge as the times require, and are widely used as board materials for furniture, wooden doors, floors, and building decoration. At present, the most commonly used artificial boards are particle board, fiberboard, plywood, and laminated timber, etc. The artificial board is based on shavings, fibers, and veneer, and is formed by applying adhesive and pressing at high temperature and pressure. The finished board has a high density and a low production cost, but still has some disadvantages: the product is heavy and inconvenient to carry: the Structural strength of the finished board is low; the resistance to static bending deformation is poor; and large amount of adhesive is needed, which results in a high formaldehyde content of the product, and does not meet production requirements for environment protection.
In view of this, how to improve the strength of the artificial board, enhance the bearing capacity of the artificial board, and effectively reduce the consumption of wood resources is a technical problem to be urgently solved by those skilled in the art. In Chinese patent CN202021653U, a technology called grid hollow core artificial board is disclosed, which solves the problem of high density and large internal stress of the current artificial board, but also has problems such as a narrow range of raw materials and low structural strength. In Chinese patent CN104070567B, a structural board and a board core thereof, and a method for processing the board core are disclosed. Specifically, a board core of a structural board with large bearing capacity and high structural stiffness and a processing method therefor are disclosed. However, the processing method is not suitable for mechanized operation, is labor-intensive and has low production efficiency.
In Chinese patent CN 103659998A, a board material is disclosed, which is formed by bonding multiple board units. Each of the board units is composed of a square wooden board, one side surface or two opposite side surfaces of the square wooden board are provided with grooves at even intervals, and two ends of the grooves extend to adjacent side surfaces. The board material is formed only by cutting grooves on the side surfaces of the square wooden board, and a slab is firmed based on the board material. The above structure is relatively simple. When the structure is subjected to complicated external forces, there is no other structure to match the grooving structure, so that the forces cannot be balanced, and the slab has a low strength and is easy to damage.
In Chinese patent CN104070567B, a structural board and a board core thereof, and a method for processing the board core are disclosed. Specifically, a hoard core of a structural board with large bearing capacity and high structural stiffness and a processing method therefor are disclosed. However, the processing method is not suitable for mechanized operation, is labor-intensive and has low production efficiency.
A fire retardant problem of the artificial board is a difficult problem commonly concerned and urgently to be solved in China and the world. At present, there are two main technical routes for the manufacture of fire-resistant artificial boards in China: one is to process the artificial board with flame retardants, and the other is to compound the artificial hoard with an inorganic board, but the latter no longer belongs to the field of conventional artificial board products, In Chinese patent CN202021651U, a multifunctional fire-retardant artificial board is disclosed. A technical solution of the patent is to coat upper and lower fire-retardant layers on upper and lower surfaces of a wooden center layer, and cover panels on the upper and lower fire-retardant layers. Although the fire retardant problem of the artificial board is solved, there is still a problem that the strength of the artificial beard is low.
Based on the disadvantages in the conventional technology, the technical problem to be solved by the present application is to provide a board core of an artificial board which has a high structural strength, is convenient for manufacturing, has high production efficiency, and can further be applied to the field of fire retardant boards.
A board core of an artificial board is provided according to the present application. The board core includes multiple groups of core strip units. Each of the core strip units has a multi-layer structure along a length direction of the board core, and each of the core strip units includes multiple substrates. The multiple substrates include a vertical pressure-bearing body extending in a thickness direction of the board core, a horizontal pressure-bearing body extending in the length direction of the board core, an oblique pulling structure obliquely arranged with respect to the horizontal pressure-bearing body and the vertical pressure-hearing body, and a dual-horizontal pressure-bearing body extending in the length direction of the board core. Each of the core strip units is composed of multiple substrates arranged in sequence, and different substrates constitute different core strip unit structures.
According to the selection of different substrates, a board core of a first artificial board is provided according to the present application. The board core includes multiple groups of core strip units. Each of the core strip units has a multi-layer structure along a length direction of the board core. Each group of the core strip unit includes a vertical pressure-bearing body extending in a thickness direction of the board core, a horizontal pressure-bearing body extending in the length direction of the board core, and an oblique pulling structure obliquely arranged with respect to the horizontal pressure-bearing body and the vertical pressure-bearing body. Each group of the core strip unit is composed of the horizontal pressure-bearing body, the vertical pressure-bearing body, the oblique pulling structure, another oblique pulling structure, another vertical pressure-bearing body, another horizontal pressure-bearing body, another oblique pulling structure and yet another oblique pulling structure laminated and bonded in sequence along the length direction of the hoard core. The core strip units are laminated and bonded in sequence along the length direction of the board core to fibrin the board core.
Preferably, the vertical pressure-bearing body includes multiple slats which extend along the thickness direction of the board core and are arranged at intervals in parallel with each other; the horizontal pressure-hearing body includes multiple slats which extend along the length direction of the board core and are arranged at intervals in parallel with each other; and the oblique pulling structure includes multiple slats which are obliquely arranged with respect to the horizontal pressure-bearing body and the vertical pressure-bearing body and are arranged at intervals. A projection of the slats at corresponding positions of two adjacent layers of the oblique pulling structures in the core strip unit is in a herringbone shape or a splay shape or a cross shape in the lamination direction of the multi-layer structure.
Preferably, the slat of the oblique pulling structure is inclined at 45 degrees with respect to a surface of the board core.
Preferably, the adjacent oblique pulling structures have a same width in the lamination direction of the multi-layer structure; and the horizontal pressure-bearing body and the vertical pressure-bearing body have a same width in the lamination direction of the multi-layer structure.
Preferably, the slats of the oblique pulling structure are arranged at equal intervals and the slats, of the horizontal pressure-bearing body and the vertical pressure-bearing body are arranged at equal intervals.
Preferably, a bonding point of the slat of the vertical pressure-bearing body at a bonding position between the vertical pressure-bearing body and the horizontal pressure-bearing body is a slope-shaped structure.
Preferably, one layer of the horizontal pressure-bearing body at a boundary of the board core may be removed according to requirements for insertion, so that the boundary of the board core is the vertical pressure-bearing body capable of insertion.
Preferably, the hoard core further includes a reinforcing rib structure in the length or width direction of the artificial board.
Preferably, a fireproof material used for retarding inflaming is sprayed on surfaces of the horizontal pressure-bearing body, the vertical pressure-bearing body and the oblique pulling structure in the core strip unit, and/or is tilled in intervals among the horizontal pressure-bearing body, the vertical pressure-bearing body and the oblique pulling structure.
In order to increase the strength of the board core, a reinforcing rib may added between the oblique pulling structure and the horizontal pressure-bearing body or between the oblique pulling structure and the vertical pressure-bearing body. The reinforcing rib at least includes one layer of thin board or multiple layers of plywood. The reinforcing rib, on the one hand, enhances the strength, and on the other hand, serving as a connecting layer between the oblique pulling structure and the horizontal pressure-bearing body or the vertical pressure-bearing body increases a bonding area, thereby facilitating bonding.
A method for manufacturing the hoard core of the first artificial board is further provided according to the present application, which includes the following steps:
Step a1: placing multiple slats with a same length and a same thickness in parallel with each other according to fiber grain, and seamlessly placing the slats in a horizontal direction to form a square flat board (1);
Step b1: placing multiple slats having a same length and a same thickness on the flat board (1) with fiber grain thereof perpendicular to the fiber grain of the flat board (1) in a same way as in step a1, and bonding the slats to the flat board (1) to form a square flat board (2);
Step c1: opening multiple grooves which are in parallel with the fiber grain of the slats on two surfaces of the flat board (2) along the fiber grain of the slats to firm a board (3);
Step d1: forming a board (4) according to steps a1 to e1, wherein a diagonal length of the board (4) is less than or equal to side lengths of the flat board (1), the flat board (2) and the board (3);
Step e1: cutting the board (4) in a diagonal direction of 45 degrees to form two triangular boards (5);
Step f1: placing four boards (5) on the board (3) with hypotenuses of the four boards (5) coinciding with edges of the board (3), and bonding the four boards to the board (3) to form a board (6);
Step g1: laminating and bonding multiple hoards (6) in a certain sequence to form a board (7), and cutting the board (7) according to a certain thickness to form one or more groups of the core strip units; and
Step h1: laminating and bonding the multiple groups of the core strip units in sequence to form the board core of the artificial board.
Preferably, the method further includes step i1: adding a reinforcing rib in the length or width direction of the board core.
Preferably, the side length of the board (3) is 1.2 m, and the side length of the board (4) is 0.85 m.
Preferably, a depth of each of the grooves on the board (3) is equal to a thickness of the corresponding slat, and a bottom of the groove is a slope-shaped structure.
The advantages of the board core of the artificial board and the method for manufacturing the board core provided by the present application are as follows: the board core has high structural stiffness, there is good mechanical balance inside the core strip units, the board core has strong bearing capacity, and is not easy to distort and deform; the utilization rate of wood is high, and the usage amount of adhesive is small, which is green and environment-friendly; the manufacturing method can be mechanized, the process is simple, and the production efficiency is high; and the board core can be applied to fire retardant artificial boards.
In addition, according to the selection of different substrates, a second slab structure with higher strength is provided according to the present application.
A board core of a second artificial board is provided according to the present application. The board core includes multiple groups of core strip units. Each of the core strip units has a multi-layer structure along a length direction of the board core. Each group of the core strip unit includes a dual-horizontal pressure-bearing body extending in a length direction of the board core, and an oblique pulling structure obliquely arranged with respect to the dual-horizontal pressure-bearing body in the length direction of the board core. Each group of the core strip unit includes the dual-horizontal pressure-bearing body, the oblique pulling structure and another oblique pulling structure in the length direction of the board core, and is formed, by laminating and bonding the dual-horizontal pressure-bearing body, the oblique pulling structure, and another oblique pulling structure.
The dual-horizontal pressure-bearing body is composed of two horizontal pressure-bearing bodies bonded at tail ends.
The core strip units are repeatedly stacked along the length direction of the board core to form the board core.
Preferably, the horizontal pressure-bearing body includes multiple slats which extend along the length direction of the board core and are arranged at intervals and in parallel with each other; and the oblique pulling structure includes multiple slats which are obliquely arranged with respect to the horizontal pressure-bearing body and are arranged at intervals. A projection of the slats at corresponding positions of two adjacent layers of the oblique pulling structures in the core strip unit is in a herringbone shape or a splay shape or a cross shape in the lamination direction of the multi-layer structure.
Preferably, a depth between the slats of the horizontal pressure-bearing body arranged at intervals is smaller than a thickness Of the horizontal pressure-bearing body.
Preferably, a depth between the slats of the oblique pulling structure arranged at intervals is smaller than a thickness of the oblique pulling structure.
In order to increase the strength of the board, core, a first reinforcing rib is inserted at a tail end of the dual-horizontal pressure-bearing body to bond the slats. Preferably, the first reinforcing rib includes at least includes one layer of thin board or multiple layers of plywood, and the number of layers of the first reinforcing rib can be adjusted according to the width and strength requirements of the board core.
Preferably, since the first reinforcing rib at least includes one layer of thin board, in a case that there is only one layer of thin board, the fiber grain of the thin board is perpendicular to the grain of the horizontal pressure-bearing body bonded with the thin board. In a case that the first reinforcing rib includes multiple layers of thin board, it is required that the liber grain of the outermost layer of thin board of the first reinforcing rib is perpendicular to the grain of IS the horizontal pressure-bearing body bonded with the thin board. In a ease that the number of multiple layers of thin board included in the first reinforcing rib is odd, it is preferred that the fiber grain of the outermost layer of thin board is perpendicular to the grain of the horizontal pressure-bearing body bonded with the thin board; in addition, the fiber grain of any two adjacent layers of thin board are perpendicular to each other.
In order to increase the strength of the board core, a second reinforcing rib may be provided at a head end of the oblique pulling structure, which is adhered to the oblique pulling structure. The second reinforcing rib at least includes one layer of thin board or multiple layers of plywood. The second reinforcing rib, on the one hand, enhances the strength, and on the other hand, serving as a connecting layer between the oblique pulling structure and the dual-horizontal pressure-bearing body increases a bonding area, thereby facilitating bonding.
Preferably, the slat of the oblique pulling structure is inclined at 45 degrees with respect to a surface of the board core. Preferably, the adjacent oblique pulling structures have a same width in the lamination direction of the multi-layer structure; and the adjacent horizontal pressure-bearing bodies have a same width in the lamination direction of the multi-layer structure. A spacing between any two adjacent slats of the horizontal pressure-bearing body is smaller than a spacing between any two adjacent slats of the oblique pulling structure. Preferably, the slats of the oblique pulling structure are arranged at equal intervals, and the slats of the horizontal pressure-bearing body are arranged at equal intervals. Preferably, a fireproof material used for retarding inflaming is sprayed on surfaces of the horizontal pressure-bearing body, the first reinforcing rib, the second reinforcing rib, a third reinforcing rib, and the oblique pulling structure in the core strip unit, and/or is filled intervals among the horizontal pressure-bearing body, the first reinforcing rib, the second reinforcing rib, a third reinforcing rib, and the oblique pulling structure.
In order to increase the strength of the board core, the oblique pulling structure and another adjacent oblique pulling structure may be interrupted at any position, and a third reinforcing rib may be inserted at the interrupted position. A direction of the third reinforcing rib is parallel or not parallel to the length direction of the board core. In a case that multiple third reinforcing ribs are inserted, the third reinforcing ribs are used as edges to form a grid structure, and the strength of the board core is improved overall.
Preferably, the board core further includes a fourth reinforcing rib structure in the length or width direction of the artificial board.
A method for manufacturing the board core of the second artificial board is further provided according to the present application, which includes the following steps:
Step a2: placing multiple slats with a same length and a same thickness in parallel with each other according to fiber grain, and seamlessly placing the slats in a horizontal direction to form a square flat board (11);
Step b2: stacking two identical boards (11) into a square flat board (12) with directions of the fiber grain of the two boards being the same;
In a case that it is required to enhance strength of the board, a first reinforcing rib may be provided between the two boards (11), and the fiber grain of the first reinforcing rib is perpendicular to the fiber, grain of the board (1) when being connected with the board (11).
Step c2: opening multiple grooves which are in parallel with the fiber grain of the board (12) on two surfaces of the flat board (12) along the fiber grain of the board to form a board (13);
Step d2: placing multiple slats with a same length and a same thickness in parallel with each other according to the fiber grain, and seamlessly placing the slats in a horizontal direction to form a square flat board (11); stacking two identical boards (11) into a square flat board with directions of the fiber grain of the two boards perpendicular to each other; and opening multiple grooves which are in parallel with the fiber grain of the square flat board on two surfaces of the square flat board along the fiber grain of the square flat board to form a board (14), wherein a diagonal length of the board (14) is less than or equal to side lengths of the flat board (11), the flat board (12) and the board (13);
Step e2: cutting the board (14) in a diagonal direction of 45 degrees to form two to triangular boards (15);
Step f2: placing four boards (15) on the board (13) with hypotenuses of the four boards (15) coinciding with edges of the board (13), and bonding the four boards to the board (13) to form a board (16);
In a case that it is required to enhance strength of the board and to increase a bonding area between the dual-horizontal pressure-bearing body and the oblique pulling structure, a second reinforcing rib may be provided between the board (13) and the board (15).
Step g2: cutting the board (16) according to a certain thickness to form one or more groups of the core strip units, and laminating and bonding the multiple groups of the core strip units in sequence to form the board core of the artificial board.
Preferably, the side length of the board (13) is 1.2 m, and the side length of the board (14) is 0.85 m. Preferably, a depth of each of the grooves on the board (13) is smaller than a thickness of the corresponding slat. Preferably, in order to increase the strength of the board core, the method further includes step h2; inserting; after the step a2 and before the step h2, a first reinforcing wherein the fiber grain of an outermost layer of thin board of the first reinforcing rib is perpendicular to the board (11). Preferably, in order to increase the strength of the board core, the method further includes step i2: inserting, after the step c2 and before the step d2, a second reinforcing rib. Preferably, if the strength of the board cone needs to be, further increased, the method may further include step j2; inserting, after the step f2 and before the step g2, a third reinforcing rib, wherein a specific process is as follows: opening grooves at different positions on a surface of the board (16) along, the length or width direction of the board core, and filling corresponding slats in the grooves to form multiple third reinforcing ribs, wherein a depth of each groove is less than or equal to the thickness of the board (14).
In order to increase the fire resistance of the board core of the artificial board, a fireproof material used for retarding inflaming may be sprayed on surfaces of the horizontal pressure-hearing body, and the oblique pulling structure in the core strip unit, and/or may he filled in intervals among the horizontal pressure-bearing body, and the oblique pulling structure.
The advantages of the board core of the second artificial board and the method for manufacturing the board core provided by the present application are as follows:
(1) Compared with the vertical pressure-bearing body structure in the conventional technology, there is no vertical pressure-bearing body in the structure of the second artificial board of the present application. The artificial board core is used for manufacturing various objects. In this case, corresponding components such as a door handle, a load-hearing member, and a hook need to be fastened through fasteners such as bolts, nails, and pins at connections or other positions. The size of the wooden board is out according to the site conditions. In a case that the fastening position is exactly the position of the vertical pressure-bearing body, since the inside of the vertical pressure-bearing body is a structure with multiple empty grooves, a contact area between an axial direction of the fastener and the vertical pressure-hearing body is very small when the fastener is inserted into the vertical pressure-bearing body, which will result in that the fastening force is too small to fix the object, and the structure of the vertical pressure-bearing body may be damaged in severe cases. While this problem can be avoided by adopting the dual-horizontal pressure-bearing body. The stab structure of the present application includes the dual-horizontal pressure-hearing body and the oblique pulling structure. No matter where the fastening position is selected, the axial direction can make good contact with the horizontal pressure-bearing body or the oblique pulling structure when the fastener is inserted into the wooden board, which increases the fastening force and has, a better fastening effect.
(2) Since there is no vertical pressure-bearing body in the structure of the second artificial board of the present application, compared with the conventional technology, it is not necessary to rotate the slab by 90 degrees when performing the grooving process. Referring to steps a2 to c2, only two boards (11) need to be stacked, and there is no need to rotate 90 degrees, and the grooving process can be performed directly on the machine. The present application saves the process of rotating the slab by 90 degrees, on the one hand saving labor costs, on the other hand, greatly improving the production efficiency.
(3) The board core composed of the dual-horizontal pressure-bearing body, the oblique pulling structure, and another oblique pulling structure has high structural stiffness, there is good mechanical balance inside the core strip units, the board core has strong bearing capacity, and is not easy to distort and deform the utilization rate of wood is high, and the usage amount of adhesive is small, which is green and environment-friendly, the manufacturing method can be mechanized, the process is simple, and the production efficiency is high.
(4) The presence of the first reinforcing rib is conducive to improving the strength of the board core and reducing the deflection of the board core, thereby reducing the deformation rate. Since the wood grain of the reinforcing rib is perpendicular to the grain of the horizontal pressure-bearing body, in a case that the board is subjected to a strong external pressure, the horizontal pressure-bearing body is prone to bending deformation under pressure, while the grain of the rib is perpendicular to the external pressure, the rib is not prone to bending deformation, and on the contrary supports the bending deformation of the horizontal pressure-bearing body, which enhances the strength of the board core, and reduces the deformation rate of the board core due to heat and damp. On the other hand, since the board core is a combination of the dual-horizontal pressure bearing body and two oblique pulling structures, it is difficult to obtain a whole board with a large size according to the existing process size. Generally, a height dimension of a door panel is greater than 2 m, while according to the existing process, the longest size of a whole board of the dual-horizontal pressure-bearing body and the oblique pulling structure can only reach 1.2 m. If the board needs to reach the size of 2 m, it is necessary to splice two boards, which will cause the longitudinal compressive strength of the board core to decrease. If there is the first reinforcing rib in the board, a whole reinforcing rib with a length of 2 m, 2.2 m, 2.4 m, or other dimensions can be used to increase the longitudinal compressive strength of the board core. In addition, the presence of the first reinforcing rib is conducive to increasing the bonding area between the board core and the panel, making the final board more solid and difficult to fall apart, Since the board core is not the final product, upper and lower panels need to be bonded to the board core to form the final product. If there is the first reinforcing rib in the board, the bonding area is increased, which makes the bonding of the final board more solid, and the board difficult to fall apart.
The presence of the second reinforcing rib is conducive to improving the strength of the board core. In addition, the presence of the second reinforcing rib is conducive to increasing the bonding area between the board core and the panel, making the final board more solid and difficult to fall apart. Since the board core is not the final product, upper and lower panels need to be bonded to the board core to form the final product. If there is the second reinforcing rib in the board, the bonding area is increased, which makes the bonding of the final board more solid, and the board difficult to fall apart.
(6) The presence of the third reinforcing rib is conducive to improving the strength of the board core, if multiple third reinforcing ribs are inserted, the third reinforcing ribs are used as edges to form a grid structure, which can increase the bearing capacity along the length direction of the board core, and further increase the beading and compressive strength of the slab, thereby improving, the overall strength of the board core.
(7) Since the board core is coated with fire-resistant materials, plus the special structure of the board core, the board core has a better flame retardant effect the board core can be applied to fire retardant artificial boards.
The drawings below only schematically illustrate and explain the present application, rather than limit the scope of the present application.
Reference Numerals:
In order to provide a clearer understanding of the technical features, objects, and effects of the present application, specific embodiments of the present application will be described with reference to the drawings, in which the same reference numerals represent the same parts. In order to make the drawings simple, the drawings only schematically show parts related to the present application, which does not represent the actual structure of the product.
In addition, in order to make the drawings simple and easy to understand, only one of the components with the same structure or function is schematically illustrated in some of the drawings, or only one of the components with the same structure or function is marked.
In this specification, the term “schematic” means “serving as an example, instance, or illustration”. Any drawing or embodiment described as “schematic” should not be construed as a more preferred or more advantageous technical solution.
Compared with the conventional technology, the board core of the artificial board provided by the present application includes multiple groups of core strip units, and each of the core strip units has a multi-layer structure along the length direction or width direction of the board core, so that there is good mechanical balance inside the core strip units, thereby effectively improving the structural strength and bearing capacity of the artificial board, and effectively reducing the bending deformation of the board in application.
Specifically, the board core of the artificial board according to the present application includes multiple groups of core strip units.
It should be noted that, in the present embodiment, the shape and composition of the horizontal pressure-bearing body, the vertical pressure-bearing body, and the oblique pulling structure are not limited to the slats in this solution, and may be other non-slat structures such as board block, board sheet, or integrated board, as long as the structural composition can meet the requirements of the vertical pressure-bearing body extending along the thickness direction of the board core, the horizontal pressure-bearing body extending along the length direction of the board core, and the oblique pulling structure being obliquely arranged with respect to the horizontal pressure-bearing body and the vertical pressure-bearing body.
It should be noted that, the above “length direction of board core” may be the width direction of the board core in a specific embodiment. It should be understood that, in the present application, a direction in which the horizontal pressure-bearing body, the vertical pressure-bearing body, and the oblique pulling structure are laminated to form the core strip unit is the same as a direction in which the core strip units are laminated to form the board core.
In the core strip unit of the present application, the horizontal pressure-hearing body and the vertical-pressure bearing body function as a flame, which is capable of withstanding the tension and pressure applied to the artificial board. Due to the combination of the oblique pulling structure and the frame, the external forces applied to the artificial board can be effectively decomposed. In addition, the core strip unit of the present application has symmetrical vertical pressure-bearing bodies and horizontal pressure-bearing bodies, on the left and right edges of the two layers of oblique pulling structures, so that there is good mechanical balance inside the core strip unit, and the board core is not prone to deformation.
In a specific embodiment, a spacing between the slats of the horizontal pressure-bearing body and the vertical pressure-bearing body in the core strip unit is adjusted according to the processing technology and the practical application of the board. The spacing between adjacent slats may not be fixed. Preferably, the slats of the horizontal pressure-bearing body and the vertical pressure-bearing body are arranged at equal intervals.
In a specific embodiment, a spacing between the slats of the oblique pulling structure in the core strip unit is adjusted according to the processing technology and the practical application of the board. The slats in a same oblique pulling structure may be parallel to each other, and the spacing between adjacent slats may not be fixed. Inclination directions and angles of the slats in the same layer of the oblique pulling structure with respect to the surface of the board core may be the same or different. Preferably, the slanting angle of the slats in the same layer of the oblique pulling structure with respect to the surface of the board core is the same, preferably 45 degrees. Preferably, the slat spacing of the horizontal pressure-bearing body and the vertical pressure-bearing body is smaller than the slat spacing of the oblique pulling structure, which is conducive to increasing the bonding area and improving the stability of the board core.
Further, in order to achieve a better mechanics effect, in a specific embodiment, the horizontal pressure-bearing body in the core strip unit has a same width along the lamination direction as the vertical pressure-bearing body in the core strip unit, and the adjacent oblique pulling structures have a same width along the lamination direction. Preferably, the horizontal pressure-bearing body, the vertical pressure-bearing body, and the oblique pulling structure have a same width along the lamination direction.
Each group of the core strip unit according to the present application includes two groups of double adjacent layers of oblique pulling structures. In a specific embodiment, due to the difference in the spacing, inclination directions and angles of slats in the oblique pulling structure, a projection of the slats at corresponding positions of two adjacent layers of the oblique pulling structures is in a herringbone shape or a splay shape or a crass shape in the lamination direction, as shown in
It should be noted that, the inclination directions and distribution manners of the slats of the two adjacent layers of the oblique pulling structures in each group of the core strip unit in the board core may not be constant.
Further, in order to improve the bonding strength of adjacent horizontal pressure-bearing body and vertical pressure-bearing body in the core strip unit and increase the bonding area, a bonding point of the slat of the vertical pressure-hearing body at a bonding position between the vertical pressure-bearing body and the horizontal pressure-bearing body is a slope-shaped structure. The slope-shaped structure may be a straight slope or a curved slope, as shown in
In a specific embodiment, if it is required to further increase the structural strength of the board core, reinforcing ribs may be added along the length direction or width direction of the board core, as shown in
In a specific embodiment, a fireproof material used for retarding inflaming may be sprayed on surfaces of the horizontal pressure-bearing body, the vertical pressure-bearing body and the oblique pulling structure in the core strip unit, and/or is filled in intervals among the horizontal pressure-bearing body, the vertical pressure-bearing body and the oblique pulling structure.
In a specific embodiment, one layer of the horizontal pressure-bearing body at a boundary of the board core according to the present application may be removed, so that the boundary of the board core is the exposed vertical pressure-bearing body.
A method for manufacturing a board care of an artificial board is further provided according to the present application. The board core includes multiple groups of core strip units. Each of the core strip units has a multi-layer structure along, a length direction of the board core. Each group of the core strip unit includes a vertical pressure-bearing body extending in a thickness direction of the board core, a horizontal pressure bearing body extending in the length direction of the board core, and an oblique pulling structure obliquely arranged with respect to the horizontal pressure-bearing body and the vertical pressure-bearing body. Each group of the core strip unit is composed of the horizontal pressure-bearing body, the vertical pressure-bearing body, the oblique pulling structure, another oblique pulling structure, another vertical pressure-hearing body, another horizontal pressure-bearing, body, another oblique pulling structure and yet another oblique pulling structure laminated and bonded in sequence along the length direction of the board core. The core strip units are laminated and bonded in sequence along the length direction of the board core to form the board core. Specific steps are as follows:
Step a1, placing multiple slats with a same length and a same thickness in parallel with each other according to fiber grain, and seamlessly placing the slats in a horizontal direction to form a square flat board (1);
Step b1: placing multiple slats having a same length and a same thickness on the flat board (1) with fiber grain thereof perpendicular to the fiber grain of the flat board (1) in a same way as in step a1, and bonding the slats to the flat board (1) to form a square flat board (2);
Step c1: opening multiple grooves which are in parallel with the fiber grain of the slats on two surfaces of the flat board (2) along the fiber grain of the slats to form a board (3);
Step d1 forming a board (4) according to steps a1 to c1, wherein a diagonal length of the board (4) is less than or equal to side lengths of the flat board (1), the flat board (2) and the board (3);
The structure view of the board (4) is the same as the board (3). It should be noted that, the depth, width, and number of the grooves in the board (4) may be the same as those of the board (3), or may be completely different from those of the board (3), as long as the diagonal length of the board (4) is less than or equal to that of the board (3). The board (4) and the board (3) are manufactured in a same way.
Step e1: cutting the board (4) in a diagonal direction of 45 degrees to form two triangular boards (5);
Step placing four boards (5) on the board (3) with hypotenuses of the four boards (5) coinciding with edges of the board (3), and bonding the four boards to the board (3) to form a board (6);
Step g1: laminating and bonding multiple boards (6) in a certain sequence to form a board (7), and cutting the board (7) according to a certain thickness to form one or more groups of the core strip units (8);
In a specific embodiment, a lower surface of the board (6) shown in
It should be noted that, the board (7) shown in
Step h1: laminating and bonding the multiple groups of the core strip units (8) in a certain sequence to form the board core of the artificial board.
The core strip units prepared according to the above steps are laminated and bonded in sequence along the length or width direction of the board core, thereby forming the board core of the artificial board having a certain length and width.
In a specific embodiment, the side length of the board (3) is 1.2 m, and the side length of the board (4) is 0.85 m.
In a specific embodiment, if the strength of the board core needs to be further increased, the manufacturing method may further include step i1: adding a reinforcing rib in the length or width direction of the board core, as shown in
Specifically, the board core of a second artificial board according to the present application includes multiple groups of core strip units.
Each group of the core strip unit is composed of the horizontal pressure-hearing body (10), the horizontal pressure-bearing body (11), the oblique puling structure (20) and the oblique pulling structure (21) laminated and bonded in sequence along the length direction of the board core, forming a structure of four layers, wherein the tail end of the horizontal pressure-bearing body (10) is laminated with the tail end of the horizontal pressure-bearing body (1), and is laminated with the head end of the oblique pulling structure (20), and the tail end of the oblique pulling structure (20) is laminated with the tail end Of the oblique pulling structure (21), thereby forming the core strip, unit (200), as shown in
Specifically, it should be noted that, the dual-horizontal pressure-bearing body shown in
Specifically, the tail end of the horizontal pressure-bearing body (10) is connected with the tail end of the horizontal pressure-bearing body (11) to form the dual-horizontal pressure-bearing body. In order to increase the strength, a first reinforcing rib may be inserted between the tail end of the horizontal pressure-bearing body (10) and the tail end of the horizontal pressure-bearing body (11), and the first reinforcing rib includes at least one layer of thin board. The number and thickness of the thin board may be increased or decreased as required. For example, the first reinforcing rib may include one layer to N layers of thin board (N is an integer greater than 1), as shown in
Each group of the core strip unit is composed of the horizontal pressure-bearing body (10), the first reinforcing rib, the horizontal pressure-bearing body (11), the oblique pulling structure (20), and the oblique pulling structure (21) laminated and bonded in sequence along the length direction of the board core. Referring to
It should be noted that, in all embodiments of the present application, it is required that the fiber grain of the thin board of the first reinforcing rib laminated with the tail end of the horizontal pressure-bearing body is perpendicular to the fiber grain of the horizontal pressure-bearing body, and an orientation of the fiber grain of the thin board of the first reinforcing rib not directly laminated with the tail end of the horizontal pressure-bearing body may be determined according to specific conditions. In a case that the number of layers of thin board included in the first reinforcing rib is odd, the fiber grain of the thin board in contact with the horizontal pressure-bearing body is perpendicular to the horizontal pressure-bearing body.
Specifically, a second reinforcing rib is inserted at a connection between the dual-horizontal pressure-bearing body and the oblique pulling structure, which serves as a connection layer of the dual-horizontal pressure-bearing body and the oblique pulling structure. The second reinforcing rib includes at least one layer of thin board, and the specific number of layers and the thickness of the thin board may be increased or decreased according to the practical conditions, as shown in
Each group of the core strip unit is composed of the horizontal pressure-beating body (10), the first reinforcing rib, the horizontal pressure-bearing body (11), the second reinforcing rib, the oblique pulling structure (20), and the oblique pulling structure (21), and the second reinforcing rib laminated and bonded in sequence along the length direction of the board core.
Specifically, when the oblique pulling structure (20) is laminated with the oblique pulling structure (21), in order to increase the strength of the board core in the length direction, the oblique pulling structure (29) and the oblique pulling structure (21) may be interrupted and grooved tit any position, and a third reinforcing rib may be tilled in the groove. Referring to
Referring to
It should be noted that, in the embodiments according to the present application, the shape and composition of the horizontal pressure-bearing body, and the oblique pulling structure are Rot limited to the slats in this solution, and may be other non-slat structures such as board block, board sheet, or integrated board, as long as the structural composition can meet the requirements of the horizontal pressure-hearing body extending along the length direction of the board core, and the oblique pulling structure being obliquely arranged with respect to the horizontal pressure-bearing body.
In a specific embodiment according to the present application, the number of core strip units in the board core is determined according to the length or width of the artificial board. A repeating manner of the core strip units in the board core depends on the specific application of the board. The present embodiment is only an example.
It should be noted that, the above “length direction of board core” may be the width direction of the board core in a specific embodiment. It should be understood that, in the present application, a direction in which the horizontal pressure-bearing body and the oblique pulling structure are laminated to form the core strip unit is the same as a direction in which the core strip units are laminated to form the board core.
In the core strip unit of the present application, the dual-horizontal pressure-bearing body function as a frame, which is capable of withstanding the tension and pressure applied to the artificial board. Due to the combination of the Oblique pulling structure and the frame, the external forces applied to the artificial board can be effectively decomposed.
In a specific embodiment, the spacing between the slats of the horizontal pressure-bearing body in the core strip unit is adjusted according to the processing technology and the practical application of the board. The spacing between adjacent slats may not be fixed. Preferably, the slats of the horizontal pressure-bearing body are arranged at equal intervals.
In a specific embodiment, a spacing between the slats of the oblique pulling structure in the core strip unit is adjusted according to the processing technology and the practical application of the board. The slats in a same oblique pulling structure may be parallel to each other, and the spacing between adjacent slats may not be fixed. Inclination directions and angles of the slats in the same layer of the oblique pulling structure with respect to the surface of the board core may be the same or different. Preferably, the slanting angle of the slats in the same layer of the oblique pulling structure with respect to the surface of the board core is the same, preferably 45 degrees. Preferably, the slat spacing of the horizontal pressure-bearing body is smaller than the slat spacing of the oblique pulling structure, which is conducive to increasing the bonding area and improving the stability of the board core.
Regardless of whether the inclination directions of the slats in the same layer of the oblique pulling structure are the same or opposite, the embodiment falls within the protection scope of the present application, as long as the slats of the oblique pulling structure are obliquely arranged at intervals with respect to the horizontal pressure-bearing body.
Further, in order to achieve a better mechanics effect, in a specific embodiment, the horizontal pressure-bearing body in the core strip unit has a same width along the lamination direction as the oblique pulling structure in the core strip unit. Preferably, the horizontal pressure-bearing body and the oblique pulling structure have a same width along the lamination direction.
Each group of the core strip unit according to the present application includes two adjacent oblique pulling structures. In a specific embodiment, due to the difference in the spacing, inclination directions and angles of slats in the oblique pulling structure, a projection of the slats at corresponding positions of two adjacent layers of the oblique pulling structures is in a herringbone shape or a splay shape or a cross shape in the lamination direction, as shown in
It should be noted that, the inclination directions and distribution manners of the slats of the two adjacent layers of the oblique pulling structures in each group of the core strip unit in the board Gore may not be constant.
In a specific embodiment, a fireproof material used for retarding inflaming may be sprayed on surfaces of the horizontal pressure-bearing body, the first reinforcing rib, the second reinforcing rib, the third reinforcing rib, and the oblique pulling structure in the core strip unit, and/or is filled in intervals among, the horizontal pressure-bearing body, the first reinforcing rib, the second reinforcing rib, the third reinforcing rib, and the oblique pulling structure.
A method for manufacturing a board core of an artificial board is further provided according to the present application. The board core includes multiple groups of core strip units. Each of the core strip units has a multi-layer structure along a length direction of the board core. Each group of the core strip unit includes a horizontal pressure-bearing body extending in the length direction of the board core, and an oblique pulling structure obliquely arranged with respect to the horizontal pressure-bearing body. Each group of the core strip unit is composed of the horizontal pressure-bearing body, another horizontal pressure-bearing body, the oblique pulling structure and another oblique pulling structure laminated and bonded in sequence along the length direction of the board core. The core strip units are laminated and bonded in sequence along the length direction of the board core to form the board core. Specific steps are as follows.
Step a2: placing multiple slats with a same length and a same thickness in parallel with each other according to the fiber grain, and seamlessly placing the slats in a horizontal direction to form a square flat board (11).
Step b2: stacking two identical boards (11) into a square flat board (12) with directions of the fiber grain of the two boards being the same;
Step c2 opening multiple grooves which are in parallel with the fiber grain of the square flat board (12) on two surfaces of the board (12) along the fiber grain of the board to form a board (13);
Step d2: placing multiple slats with a same length and a same thickness in parallel with each other according to the fiber grain, and seamlessly placing the slats in a horizontal direction to form a square flat board (11); stacking two identical boards (11) into a square flat board with directions of the fiber grain of the two boards perpendicular to each other; and opening multiple grooves which are in parallel with the fiber grain of the square flat board on two surfaces of the square flat board along the fiber grain of the square flat board to form a board (14), wherein a diagonal length of the board (14) is less than or equal to side lengths of the flat board (11), the flat board (12) and the board (13);
Step e2: cutting the board (14) in a diagonal direction of 45 degrees to form two triangular boards (15);
Step f2: placing four boards (15) on the board (13) with hypotenuses of the four boards (15) coinciding with edges of the board (13), and bonding the four boards to the board (13) to form a board (16), wherein the board (16) is the core'strip unit;
Step g2: laminating and bonding the multiple groups of the boards (16) in a certain sequence to form the board core of the artificial board, as shown in
It should be noted that, the board (16) shown in
The core strip units prepared according to the above steps are laminated and bonded in sequence along the length or width direction of the board core, thereby forming the board core of the artificial board having a certain length and width.
It should be noted that the orientation terms used in the manufacturing process of the present application refers to
In a specific embodiment, the side length of the board (13) is 1.2 m, and the side length of the board (14) is 0.85 m.
In a specific embodiment, if the strength of the board core needs to be further increased, a first reinforcing rib may be inserted between two boards (and the manufacturing method flintier includes step h2: inserting, anger the step a2 and before the step b2, a first reinforcing rib, wherein it is required that the fiber gain of an outermost layer of thin board of the first reinforcing rib is perpendicular to the board (11). The first reinforcing rib may include multiple layers of thin board, and a thickness of the reinforcing rib is achieved by increasing or decreasing the number and thickness of the thin board as required. Referring to
In a specific embodiment, if the strength of the board core needs to be further increased, the method may further include step i2: inserting, after the step c2 and before the step d2, a second reinforcing rib, wherein the second reinforcing rib may include multiple layers of thin board, and the thickness of the reinforcing rib is achieved by increasing or decreasing the number and thickness of the thin board as required. Referring to
In a specific embodiment, if the strength of the board core needs to be further increased, the method further includes step j2: inserting, after the step f2 and before the step g2, a third reinforcing rib, wherein a specific process is, as follows: opening grooves at different positions on a surface (a plane on which the oblique pulling structure is located) of the board (16) along the length or width direction of the board core, and filling corresponding slats in the grooves to thou multiple third reinforcing ribs, as shown in
In a specific embodiment, in order to increase the strength of the board core, the first reinforcing rib is inserted in a middle of the tail end of the dual-horizontal pressure-bearing body. The specific method is as follows:
Step a3: placing multiple slats with a same length and a same thickness into a rectangular board according to the fiber grain, wherein a length of a long side of the rectangular board is equal to the length of the first reinforcing rib, which ensures that the first reinforcing rib is an uninterrupted reinforcing rib along the length direction, and the length may be, for example, 2.4 m; and then placing multiple slats with a same length and a same thickness in parallel with each other according to the fiber grain, and seamlessly placing the slats in a horizontal direction to form a square flat board (11);
Step b3: placing multiple boards (11) from two sides of the rectangular board with the fiber grain of the board (11) being perpendicular to the fiber grain of the rectangular board, until the boards (11) are tiled on the two sides of the rectangular board, and bonding the boards to the rectangular board.
Step c3: opening, after bonding, multiple grooves which are in parallel with the fiber grain of the slats on two surfaces of the board along the fiber grain of the slats to form the dual-horizontal pressure-bearing body having the complete first reinforcing rib.
It should be noted that, in the above manufacturing method, the lengths, widths, and thicknesses of the slats and the boards are selected according to the size and the application of the board core. Dimensions of the slats and the boards do not limit the technical solution of the present application.
Specifically, it should be noted that, the drawings of all embodiments of the present application are only for illustrating the structure or the present application. The plan views, front views, side views of the drawings are only schematic views, those views may be views viewed from an oblique angle, and may not be the plan views or front views viewed from a vertical direction or a horizontal direction.
A series of detailed descriptions above-mentioned are just for illustrating the applicable embodiments of the present application, and are not intend to limit the scope of protection of the present application. Any equivalent embodiments or modifications without departing from the skill and spirit of the present application, for example, the combination, division or duplication of features fail within the scope of protection of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201710542859.9 | Jul 2017 | CN | national |
| 201810387453.2 | Apr 2018 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2018/094445 | 7/4/2018 | WO | 00 |
