Forming method of curved glulam components based on wood plasticity

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 an arc-shaped glulam component 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 eco-environmental protection, carbon sequestration and energy saving; different from the traditional log structure, the structural members of the glulam structure can be lengthened by wood finger joints , Horizontal width, thickness superimposed glue synthesis type, at the same time, more importantly, the glued wood components can be designed and prepared into any shape and size according to the structure and construction needs, thus breaking through the various restrictions of logs. Therefore, due to the policy orientation of my country's energy saving and emission reduction, green building technology and modernization of the construction industry, glulam structur...

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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 shape rebound of the curved glulam component after preparation The resulting inconsistency with the design shape; the present invention proposes a method for forming curved glulam components based on wood plasticity. Improve the plasticity of the wood, and then directly prepare the components according to the design radius of curvature of the curved glulam components, which solves the unreliable shape and Instability and the lack of easy fracture of wood composite laminates effectively guarantee the shape and processing quality of curved glulam components

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