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Technical method and apparatus for surface compactness of timber

A technology of compacting device and surface of wood, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of difficulty in controlling the depth and degree of compaction of the surface compaction layer, low utilization rate of wood, etc. The effect of cultivation, small loss of wood volume, and alleviating the shortage of hard wood resources

Pending Publication Date: 2019-01-29
GUANGDONG YIHUA TIMBER IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention proposes a method and device for compacting the surface of wood. Wood Surface Densification Technology and Device for Effectively Reducing Wood Volume Loss at the Same Time of Wood Surface Hardness and Abrasion Resistance

Method used

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  • Technical method and apparatus for surface compactness of timber

Examples

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Effect test

Embodiment 1

[0047] Plantation teak, 1000mm*120mm*25mm, air dry density 627kg / m 3 , compress its surface densely by 2.0mm. Select a cylindrical loading head with a radius of 8mm, adjust the height of the cylindrical loading head at the height of the lifting table plus the thickness of the door panel to be processed, so that it is at the same level to ensure the uniformity of the surface density; adjust the height control of the lifting table The compression amount is 1mm, the reciprocating stroke of the cylindrical loading head is set to 1000mm, and the pressurized feed rate is 3.0m / min; the plantation teak is placed in a wood softening tank and treated with water vapor at 130°C for 12 minutes to make the wood Softening: After softening, the test piece is fixed on the lifting worktable by the left and right clamping blocks, and the compression amount is increased to 2.0mm by 0.5mm gradient intermittently, and then the process is repeated 4 times, and the surface density of the made surface...

Embodiment 2

[0049] Oak olive wood, 600mm*110mm*25mm, air dry density 430kg / m 3 , compress its surface densely by 3.0mm. Select a cylindrical loading head with a radius of 5mm, adjust the levelness of the cylindrical loading head and the lifting table to ensure the uniformity of surface compactness; adjust the height of the lifting table to control the compression to 1mm, and set the level of the cylindrical loading head The reciprocating stroke is 300mm, and the pressurized feed speed is 8m / min; put the Oclamella wood in a wood softening tank, and soak it in hot water at 95°C for 20 minutes to soften the wood; after softening, the specimen passes through the left and right clamping blocks Fix it on the lifting table, use 0.5mm gradient to increase the compression amount to 3.0 mm and then repeat the process 5 times, the surface density of the made surface dense material can reach 783 Kg / m 3 , which is about 82% higher than that before undensification, the surface hardness is increased fr...

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Abstract

The invention relates to technical method and apparatus for surface compactness of timber. The apparatus includes a wood test piece, left and right clamping blocks, a lifting work table, a column surface loading head, and a loading head fixing block. The method includes: 1) fastening the column surface loading head on the loading head fixing block through screws, and connecting the loading head fixing block with a crank-link mechanism; 2) regulating levelness and height of the column surface loading head and lifting work table; 3) setting reciprocating travel and compression feeding speed; 4)pre-softening the timber; 5) fixing the wood test piece on the lifting work table; 6) performing repeated compression. The method and apparatus have the advantages of: by controlling the compression quantity and the radius of the loading head, controllability on the thickness of the compact layer on the surface of timber and the compactness is achieved; the surface of the timber is subjected to repeated compression, so that resilience of compression deformation is greatly reduced, wherein the production process is free of pressure maintaining, thus greatly increasing productivity; the method and apparatus can achieve automatic flow line production and are free of any chemical reagents, thus achieving environmental protection.

Description

technical field [0001] The invention relates to a technique method and a device for compacting the surface of wood, and belongs to the technical fields of wood function improvement and wood processing. Background technique [0002] Hard wood is a good material for making wooden furniture, wooden floors, and solid wood doors and windows, but the resources are increasingly depleted, and the shortage of wood resources must be alleviated by using artificial forest materials. Due to the defects of low density and soft texture of artificial fast-growing forest wood, and the unstable quality of solid wood bending and low comprehensive utilization, it cannot be directly applied to the manufacture of high-value-added wood products such as high-end furniture, solid wood floors, and solid wood doors and windows. Therefore, it is imminent to develop technical problems for high value-added processing of small and medium-sized precious woods, especially the research on key technologies fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08
Inventor 张碧莲刘丹丹刘子欢关惠元黄彦慧黄琼涛蔡琦
Owner GUANGDONG YIHUA TIMBER IND
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