Arc laminated wood component forming method based on wood plasticity

A molding method, a technology of glulam, applied in the joining of wooden veneers, wood processing appliances, chemical instruments and methods, etc. Reliable, high-quality components

Active Publication Date: 2017-02-08
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the preparation of curved glulam components in the prior art, in the processing of traditional curved glulam components, relying on experience to adjust the radius of curvature of glulam component manufacturing or through existing preparation methods, it is impossible to correctly predict due to the elasticity of wood, Due to viscoelasticity and viscous characteristics, the fracture of the wooden laminate caused by defects such as wood knots or the thickness of the laminate during the glue-pressing molding process of the curved glulam component, and the

Method used

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  • Arc laminated wood component forming method based on wood plasticity
  • Arc laminated wood component forming method based on wood plasticity

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Experimental program
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Effect test

Embodiment 1

[0031] The molding method of arc-shaped glued wood components based on wood plasticity, including five processes of wood moisture content adjustment, wood plywood gluing, profiling, pressurization and pressure relief maintenance, among which wood moisture content adjustment, wood plywood gluing, leaning The four processes of molding and pressurization are all completed under the environmental conditions that the temperature is 30° C. and the relative humidity is 80%.

[0032] The moisture content of the wood is 16%, the design radius of curvature of the curved glulam member is 6000mm, the section height of the member is 600mm, the number of wooden laminates is 16, and the thickness of each layer of wooden laminates is 37.5mm, then the curved glulam member The radius of curvature of the preparation is 6000mm.

[0033] The glue coating on the wooden laminate is 300g / m2 on one side 2 , the glue pressing time is 5.0h, and the number of wooden laminates is 16 layers, such asfigure...

Embodiment 2

[0038] The molding method of arc-shaped glued wood components based on wood plasticity, including five processes of wood moisture content adjustment, wood plywood gluing, profiling, pressurization and pressure relief maintenance, among which wood moisture content adjustment, wood plywood gluing, leaning The four processes of molding and pressurization are all completed under the environmental conditions that the temperature is 32° C. and the relative humidity is 85%.

[0039] The moisture content of the wood is 18%, the design radius of curvature of the curved glulam member is 18000mm, the section height of the member is 800mm, the number of wooden laminates is 22, and the thickness of each layer of wooden laminates is 36.3mm, then the curved glulam member The radius of curvature of the preparation is 18000mm.

[0040] The glue coating of the wooden laminate is 350g / m2 on one side 2 , the glue pressing time is 6.0h, and the number of wooden laminates is 22 layers, such as fi...

Embodiment 3

[0044] The molding method of arc-shaped glued wood components based on wood plasticity, including five processes of wood moisture content adjustment, wood plywood gluing, profiling, pressurization and pressure relief maintenance, among which wood moisture content adjustment, wood plywood gluing, leaning The four processes of molding and pressurization are all completed under the environmental conditions that the temperature is 35° C. and the relative humidity is 90%.

[0045] The moisture content of the wood is 20%, the design radius of curvature of the curved glulam member is 10000mm, the section height of the member is 1200mm, the number of wooden laminates is 33, and the thickness of each layer of wooden laminates is 36.3mm, then the curved glulam member The radius of curvature of the preparation is 10000mm.

[0046] The glue coating of the wooden laminate is 380g / m2 on one side 2 , the glue pressing time is 5.5h, and the number of wooden laminates is 33 layers, such as f...

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Abstract

The invention discloses an arc laminated wood component forming method based on wood plasticity, and belongs to the field of laminated wood preparing. The method comprises the five working procedures including wood water containing rate adjustment, wood lamination coating, profile modeling, pressurizing and pressure unloading curing. Through adjustment of the water containing rate of wood and the component machining environment condition, a wood laminated board is machined according to the design curvature radius of an arc laminated wood component, and it is ensured the prepared component has the precise design shape; through the adjustment of the water containing rate of wood and the component machining environment condition, the design curvature radius of the arc laminated wood component is directly adopted for coating and pressurizing, the precision of the quality and the shape of the arc laminated wood component can be effectively ensured, and the problems that machining of a traditional arc laminated wood component relies on experiences for adjusting the curvature radius, due to the defects of knots and the like or the reasons of the lamination thickness and the like, the wood lamination board is broken, and after the preparing of the arc laminated wood component, due to shape springback, the shape is inconsistent with the design shape are solved.

Description

technical field [0001] This patent relates to the preparation of glulam, in particular to a method for forming curved glulam components based on wood plasticity. Background technique [0002] The same as the traditional log structure, the glulam structure is also made of wood material, which has the advantages of ecological environmental protection, carbon sequestration and energy saving; different from the traditional log structure, the structural components of the glulam structure can be lengthened by wood finger joints , Horizontal width, and thickness superposition and gluing. At the same time, more importantly, glulam components can be designed and prepared into arbitrary shapes and sizes according to structural and architectural needs, thus breaking through the limitations of logs. Therefore, due to the policy orientation of my country's energy saving and emission reduction, green building technology and construction industry modernization, the flexible and changeable ...

Claims

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Application Information

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IPC IPC(8): B27M3/00B27D1/08B27D5/00B27H1/00B32B37/10B32B37/12
CPCB27D1/08B27D5/00B27H1/00B27M3/00B32B37/10B32B37/12
Inventor 岳孔刘伟庆程秀才贾翀陆伟东汤丽娟
Owner NANJING UNIV OF TECH
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