CN110788943A - Processing method of orthogonal laminated wood and corresponding product - Google Patents
Processing method of orthogonal laminated wood and corresponding product Download PDFInfo
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- CN110788943A CN110788943A CN201911092973.1A CN201911092973A CN110788943A CN 110788943 A CN110788943 A CN 110788943A CN 201911092973 A CN201911092973 A CN 201911092973A CN 110788943 A CN110788943 A CN 110788943A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/13—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board all layers being exclusively wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
Abstract
The invention provides a processing method of orthogonal laminated wood, which is characterized in that five layers of orthogonal stranded wood are subjected to integral pressing after being subjected to grouping prepressing, so that assembly is quick and efficient, the manufacturing efficiency is high, and the performance of the pressed orthogonal laminated wood is good. The assembly of the upper plates and the lower plates is of a height-direction reverse structure, the upper plates and the lower plates can be pre-pressed through two groups of upper plates for assembly, after one group of upper plates is pre-pressed, the upper plates are turned into a cavity of a second press through a panel turnover machine to form the lower plates, and then the middle plate is assembled on the upper surface of the lower plate.
Description
Technical Field
The invention relates to the technical field of light wall structures, in particular to a processing method of orthogonal laminated wood, and also provides a product corresponding to the processing method.
Background
Cross-laminated veneer (CLT) is an orthogonal assembly of N layers of solid wood sawn timber or structural composite boards, wherein N is an odd number greater than or equal to 3, and is a factory-prefabricated engineering wood product in the form of rectangular, linear and planar boards pressed by structural adhesives. As shown in fig. 1, CLT (cross laminated wood) generally includes parallel layers, i.e., the grain direction of the ply is parallel to the length direction of the CLT board, and transverse layers, i.e., the grain direction of the ply is perpendicular to the length direction of the CLT board.
CLT (cross-laminated wood) is a new type of engineered wood product, originated in europe in the 90 s of the 20 th century, and is mainly used as a load-bearing member in wood-structure buildings, such as floor panels, wall panels and roof panels. On one hand, compared with other wood materials, such as solid wood sawn timber and laminated wood, the CLT has good physical and mechanical properties such as dimensional stability, bending rigidity and strength; on the other hand, when a CLT is subjected to bending deformation by out-of-plane loading as a member such as a floor panel, the CLT primary failure mode includes CLT transverse layer rolling shear failure in addition to the tensile failure of the plywood-like underlying plies.
The existing orthogonal laminated wood needs to be subjected to single pressurization and compression molding after an N-layer blank is cut into corresponding thicknesses in the manufacturing process, the N-layer blank needs to be paved layer by layer, and in the actual assembling process, arrangement of each layer needs to be considered simultaneously, so that the assembly efficiency is low, the efficiency of one-time lamination is high, the time period of actual assembly is relatively long, and the manufacturing efficiency of the whole orthogonal laminated wood is low.
Disclosure of Invention
Aiming at the problems, the invention provides a processing method of orthogonal laminated wood, which carries out integral pressing after grouping and prepressing five layers of orthogonal stranded wood, so that assembly is quick and efficient, manufacturing efficiency is high, and the performance of the pressed orthogonal laminated wood is good.
A processing method of orthogonal laminated wood is characterized in that: the upper plate and the lower plate are symmetrically arranged in the thickness direction, the assembly of the two upper plates and the two lower plates is of a height-direction reverse structure, the pre-pressing of the upper plates and the lower plates can be completed through the pre-pressing of two groups of upper plates, the pre-pressing of the lower plates can be completed through the pre-pressing of one group of upper plates, the assembly of the upper plates is turned into a cavity of a second press through a panel turnover machine after the pre-pressing of the assembly of the upper plates, the lower plates are formed, the assembly of the middle plates is arranged on the upper surface of the lower plates, the assembly of the other group of upper plates is directly placed on the upper surface of the middle plate through a hoisting device after the pre-pressing, and then the four-side pressing is performed to form the integral orthogonal laminated wood.
It is further characterized in that:
the specific operation steps are as follows, S1, material selection: selecting a wood material, wherein the water content of the wood material is 10% -14%, and the error of the water content between adjacent laminates is not more than 3%;
s2, surface processing: planing the surface to be glued of the wood material selected in the step S1 to remove impurities on the surface of the material;
s3, sawing: sawing the wood material according to a preset length, and performing finger joint when the length is insufficient;
s4, first assembling: arranging and placing a second laminate assembly positioned at the upper part of the middle laminate on a first laminating machine, then gluing the upper surface of the second laminate, arranging and placing a first laminate assembly on the upper surface of the second laminate, and applying force to the periphery of the first laminating machine for prepressing;
s5, turning the first batch composite board, and assembling for the second time: overturning the composite board formed by the first assembly prepressing through a plate turnover machine, hoisting the composite board to a cavity of a second press machine, gluing the upper surface of the overturned composite board, and arranging and placing the intermediate layer plate assembly on the upper surface of the composite board;
s6, third assembling: arranging and placing a second laminate assembly positioned at the upper part of the middle laminate on a first laminating machine, then gluing the upper surface of the second laminate, arranging and placing a first laminate assembly on the upper surface of the second laminate, and applying force to the periphery of the first laminating machine for prepressing;
s7, fourth assembling: gluing the upper surface of the intermediate layer plate group blank layer, and parallelly moving the composite board pre-pressed by the third assembly to the upper surface of the intermediate layer plate group blank layer for assembly;
s8, pressure curing: and pressurizing the four sides of the orthogonal glued wood board under the condition that the ambient temperature is higher than 20 ℃ to form a finished product.
It is further characterized in that:
the ambient environment of the first assembly and the second assembly is more than 20 ℃, the up-down direction pressurizing pressure of the first pressing machine is 0.6-1.0 MPa, the width direction side surface pressurizing pressure is 0.2-0.5 MPa, and the pressurizing time is 0.5-1 h;
in the pressurizing and curing process, the up-down direction pressure of the second pressing machine is 0.8-1.2 MPa, the width direction side surface pressurizing pressure is 0.2-0.6 MPa, the pressurizing time is 1-2 h, and the pressurizing time of the second pressing machine is the time for carrying out two times of prepressing by the first pressing machine, so that the whole processing process is smooth and rapid;
in all the sizing steps, sizing is carried out through rubber rolls, the sizing amount is 180-200 g per square meter, the glue is specifically polyurethane glue, and the pressure of the rubber rolls is 1.2Mpa when the pressure is applied;
in the processing process, a temporary storage area for the front surface of the composite material and a temporary storage area for the back surface of the composite material are arranged according to the workshop space, so that the processing efficiency of the first pressing machine is high in the processing process, and the machine does not need to be stopped for waiting;
the wood material includes but is not limited to solid wood sawn timber, laminated veneer lumber or laminated strip lumber.
A positive veneer wood product characterized by: the laminated plate comprises a first laminated plate, a second laminated plate, a third laminated plate, a fourth laminated plate and a fifth laminated plate which are arranged from two to two, wherein the third laminated plate is specifically a middle laminated plate, the first laminated plate and the fifth laminated plate are made of the same material and have the same thickness, the assembly arrangement direction of the first laminated plate and the fifth laminated plate is parallel to the assembly arrangement direction of the middle laminated plate, the second laminated plate and the fourth laminated plate are made of the same material and have the same thickness, the assembly arrangement direction of the second laminated plate and the fourth laminated plate is perpendicular to the assembly arrangement direction of the middle laminated plate, and the first laminated plate and the fifth laminated plate are outer surface layers.
It is further characterized in that: the material of first plywood, fifth plywood is SPF, and thickness is 20mm, the material of second plywood, fourth plywood is SPF, and thickness is 25mm, the thickness of third plywood is 30 mm.
After the technical scheme is adopted, because two upper-layer boards and two lower-layer boards of five layers of orthogonal and wood are respectively pre-pressed by the first press to obtain corresponding composite boards, then one of the composite boards is turned over and then placed in the second press, the middle-layer board is arranged into blanks, then the composite boards are parallelly conveyed to the upper layer of the middle-layer board, then the composite boards are pressed by the second press, in the whole operation process, the two presses are synchronously operated, because the upper-layer boards and the lower-layer boards are respectively pre-pressed, the pressing time of the second press is relatively shortened, the processing efficiency of the whole orthogonal laminated wood is further improved, the five layers of orthogonal stranded wood are pre-pressed in groups, then the whole press is carried out, the assembly is fast and efficient, the manufacturing efficiency is high, the adhesion degree after pre-pressing is better, and the performance of the orthogonal laminated wood is good.
Drawings
FIG. 1 is a schematic cross-sectional view of a product of the present invention;
the names corresponding to the sequence numbers in the figure are as follows:
the laminated plate comprises a first laminated plate 1, a second laminated plate 2, a third laminated plate 3, a fourth laminated plate 4 and a fifth laminated plate 5.
Detailed Description
A method for processing orthogonal laminated wood comprises the following steps: the upper plate and the lower plate are symmetrically arranged in the thickness direction, the assembly of the two upper plates and the two lower plates is of a height-direction reverse structure, the pre-pressing of the upper plates and the lower plates can be completed through the pre-pressing of two groups of upper plates, the pre-pressing of the lower plates can be completed through the pre-pressing of one group of upper plates, the assembly of the upper plates is turned into a cavity of a second press through a panel turnover machine after the pre-pressing of the assembly of the upper plates, the lower plates are formed, the assembly of the middle plates is arranged on the upper surface of the lower plates, the assembly of the other group of upper plates is directly placed on the upper surface of the middle plate through a hoisting device after the pre-pressing, and then the four-side pressing is performed to form the integral orthogonal laminated wood.
The specific operation steps are as follows:
s1, selecting materials: selecting a wood material, wherein the water content of the wood material is 10% -14%, and the error of the water content between adjacent laminates is not more than 3%;
s2, surface processing: planing the surface to be glued of the wood material selected in the step S1 to remove impurities on the surface of the material;
s3, sawing: sawing the wood material according to a preset length, and performing finger joint when the length is insufficient;
s4, first assembling: arranging and placing a second laminate assembly positioned at the upper part of the middle laminate on a first laminating machine, then gluing the upper surface of the second laminate, arranging and placing a first laminate assembly on the upper surface of the second laminate, and applying force to the periphery of the first laminating machine for prepressing;
s5, turning the first batch composite board, and assembling for the second time: overturning the composite board formed by the first assembly prepressing through a plate turnover machine, hoisting the composite board to a cavity of a second press machine, gluing the upper surface of the overturned composite board, and arranging and placing the intermediate layer plate assembly on the upper surface of the composite board;
s6, third assembling: arranging and placing a second laminate assembly positioned at the upper part of the middle laminate on a first laminating machine, then gluing the upper surface of the second laminate, arranging and placing a first laminate assembly on the upper surface of the second laminate, and applying force to the periphery of the first laminating machine for prepressing;
s7, fourth assembling: gluing the upper surface of the intermediate layer plate group blank layer, and parallelly moving the composite board pre-pressed by the third assembly to the upper surface of the intermediate layer plate group blank layer for assembly;
s8, pressure curing: and pressurizing the four sides of the orthogonal glued wood board under the condition that the ambient temperature is higher than 20 ℃ to form a finished product.
The ambient environment during the first assembly and the second assembly is more than 20 ℃, the up-down direction pressurizing pressure of the first pressing machine is 0.6-1.0 MPa, the width direction side surface pressurizing pressure is 0.2-0.5 MPa, and the pressurizing time is 0.5-1 h;
in the process of pressurizing and curing, the up-down direction pressure of the second press is 0.8-1.2 MPa, the width direction side surface pressurizing pressure is 0.2-0.6 MPa, the pressurizing time is 1-2 h, and the pressurizing time of the second press is the time for carrying out two times of prepressing by the first press, so that the whole processing process is smooth and rapid;
in all the sizing steps, sizing is carried out through rubber rolls, the sizing amount is 180-200 g per square meter, the glue is specifically polyurethane glue, and the pressure of the rubber rolls is 1.2Mpa when the pressure is applied;
in the processing process, a temporary storage area for the front surface of the composite material and a temporary storage area for the back surface of the composite material are arranged according to the workshop space, so that the processing efficiency of the first pressing machine is high in the processing process, and the machine does not need to be stopped for waiting;
wood materials include, but are not limited to, solid wood lumber, laminated veneer lumber, or laminated sliver lumber.
A positive veneer wood product, see fig. 1: the laminated plate comprises a first laminated plate 1, a second laminated plate 2, a third laminated plate 3, a fourth laminated plate 4 and a fifth laminated plate 5 which are arranged from two to three, wherein the third laminated plate 3 is specifically a middle laminated plate, the first laminated plate 1 and the fifth laminated plate 5 are made of the same material and have the same thickness, the assembly arrangement direction of the laminated plate is parallel to the assembly arrangement direction of the middle laminated plate, the second laminated plate 2 and the fourth laminated plate 4 are made of the same material and have the same thickness, the assembly arrangement direction of the laminated plate is perpendicular to the assembly arrangement direction of the middle laminated plate, and the first laminated plate 1 and the fifth laminated plate 5 are outer surface layers.
The first layer plate 1 and the fifth layer plate 5 are both SPF, the thickness is 20mm, the second layer plate 2 and the fourth layer plate 4 are both SPF, the thickness is 25mm, and the thickness of the third layer plate 3 is 30 mm.
Because two-layer upper portion panel, two-layer lower part panel of five layers of quadrature and wood pass through the pre-compaction of first pressfitting machine respectively and obtain corresponding composite board, later place one of them composite board in the second pressfitting machine after overturning, arrange the base with the intermediate lamella again, then carry composite board parallel to the upper strata of intermediate lamella, then through second pressfitting machine pressure, in whole operation process, two pressfitting machines synchronous operation, because upper portion panel, lower part panel pass through the pre-compaction respectively, it makes the pressfitting time of second pressfitting machine shorten relatively, and then improved the machining efficiency of whole quadrature veneer, divide into groups the pre-compaction of five layers of quadrature strand wood, carry out whole pressfitting again, it makes the group base swift high-efficient, the preparation efficiency is high, and the degree of adhesion is better after the pre-compaction, make the quadrature veneer after the pressfitting good performance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A processing method of orthogonal laminated wood is characterized in that: the upper plate and the lower plate are symmetrically arranged in the thickness direction, the assembly of the two upper plates and the two lower plates is of a height-direction reverse structure, the pre-pressing of the upper plates and the lower plates can be completed through the pre-pressing of two groups of upper plates, the pre-pressing of the lower plates can be completed through the pre-pressing of one group of upper plates, the assembly of the upper plates is turned into a cavity of a second press through a panel turnover machine after the pre-pressing of the assembly of the upper plates, the lower plates are formed, the assembly of the middle plates is arranged on the upper surface of the lower plates, the assembly of the other group of upper plates is directly placed on the upper surface of the middle plate through a hoisting device after the pre-pressing, and then the four-side pressing is performed to form the integral orthogonal laminated wood.
2. The method of claim 1, wherein:
the specific operation steps are as follows, S1, material selection: selecting a wood material, wherein the water content of the wood material is 10% -14%, and the error of the water content between adjacent laminates is not more than 3%;
s2, surface processing: planing the surface to be glued of the wood material selected in the step S1 to remove impurities on the surface of the material;
s3, sawing: sawing the wood material according to a preset length, and performing finger joint when the length is insufficient;
s4, first assembling: arranging and placing a second laminate assembly positioned at the upper part of the middle laminate on a first laminating machine, then gluing the upper surface of the second laminate, arranging and placing a first laminate assembly on the upper surface of the second laminate, and applying force to the periphery of the first laminating machine for prepressing;
s5, turning the first batch composite board, and assembling for the second time: overturning the composite board formed by the first assembly prepressing through a plate turnover machine, hoisting the composite board to a cavity of a second press machine, gluing the upper surface of the overturned composite board, and arranging and placing the intermediate layer plate assembly on the upper surface of the composite board;
s6, third assembling: arranging and placing a second laminate assembly positioned at the upper part of the middle laminate on a first laminating machine, then gluing the upper surface of the second laminate, arranging and placing a first laminate assembly on the upper surface of the second laminate, and applying force to the periphery of the first laminating machine for prepressing;
s7, fourth assembling: gluing the upper surface of the intermediate layer plate group blank layer, and parallelly moving the composite board pre-pressed by the third assembly to the upper surface of the intermediate layer plate group blank layer for assembly;
s8, pressure curing: and pressurizing the four sides of the orthogonal glued wood board under the condition that the ambient temperature is higher than 20 ℃ to form a finished product.
3. The method of claim 2, wherein: the ambient environment of the first assembly and the second assembly is more than 20 ℃, the up-down direction pressurizing pressure of the first pressing machine is 0.6-1.0 MPa, the width direction side surface pressurizing pressure is 0.2-0.5 MPa, and the pressurizing time is 0.5-1 h.
4. A method of processing cross-glued wood according to claim 3, characterised in that: in the pressurizing and curing process, the up-down direction pressure of the second pressing machine is 0.8-1.2 MPa, the width direction side surface pressurizing pressure is 0.2-0.6 MPa, the pressurizing time is 1-2 h, and the pressurizing time of the second pressing machine is the time for carrying out two times of prepressing by the first pressing machine.
5. The method of claim 2, wherein: in all the gluing steps, gluing is carried out through a rubber roll, the gluing amount is 180-200 g/square meter, polyurethane glue is particularly adopted, and the pressure of the rubber roll is 1.2Mpa when the pressure is applied.
6. The method of claim 1, wherein: in the processing process, a temporary storage area for the front surface of the composite material and a temporary storage area for the back surface of the composite material are arranged according to the workshop space.
7. The method of claim 1, wherein: the wood material includes but is not limited to solid wood sawn timber, laminated veneer lumber or laminated strip lumber.
8. A positive veneer wood product characterized by: the laminated plate comprises a first laminated plate, a second laminated plate, a third laminated plate, a fourth laminated plate and a fifth laminated plate which are arranged from two to two, wherein the third laminated plate is specifically a middle laminated plate, the first laminated plate and the fifth laminated plate are made of the same material and have the same thickness, the assembly arrangement direction of the first laminated plate and the fifth laminated plate is parallel to the assembly arrangement direction of the middle laminated plate, the second laminated plate and the fourth laminated plate are made of the same material and have the same thickness, the assembly arrangement direction of the second laminated plate and the fourth laminated plate is perpendicular to the assembly arrangement direction of the middle laminated plate, and the first laminated plate and the fifth laminated plate are outer surface layers.
9. A positive laminated wood product according to claim 8, wherein: the material of first plywood, fifth plywood is SPF, and thickness is 20mm, the material of second plywood, fourth plywood is SPF, and thickness is 25mm, the thickness of third plywood is 30 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911092973.1A CN110788943A (en) | 2019-11-11 | 2019-11-11 | Processing method of orthogonal laminated wood and corresponding product |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911092973.1A CN110788943A (en) | 2019-11-11 | 2019-11-11 | Processing method of orthogonal laminated wood and corresponding product |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025874A (en) * | 2020-08-04 | 2020-12-04 | 南京林业大学 | Method for rapidly curing artificial board core layer adhesive by microwave |
| CN114541644A (en) * | 2022-02-09 | 2022-05-27 | 福建尤溪国兴木业有限公司 | Pure solid wood orthogonal laminated wood |
-
2019
- 2019-11-11 CN CN201911092973.1A patent/CN110788943A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025874A (en) * | 2020-08-04 | 2020-12-04 | 南京林业大学 | Method for rapidly curing artificial board core layer adhesive by microwave |
| CN114541644A (en) * | 2022-02-09 | 2022-05-27 | 福建尤溪国兴木业有限公司 | Pure solid wood orthogonal laminated wood |
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