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Small-diameter wood sheared integrating timber production method

A production method and technology of small-diameter wood, which can be applied to wood processing equipment, manufacturing tools, etc., can solve the problems of material density, strength, rigidity, and cannot be used alone.

Inactive Publication Date: 2005-12-21
ZHEJIANG PANAN COUNTY FOREST SEA CRAFT FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Regardless of finger joint synthesis or direct splicing of laminated lumber, although fast-growing small-diameter wood such as fir, poplar, and fir can be used in a new way, the common problem is that the density, strength, and rigidity of the material have not been improved. It is uniquely applied to the production of beams with high strength requirements, heavy packing boxes, and sports field floors with high load-bearing and high wear resistance requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Put the peeled fast-growing fir section with a diameter of 3-4 cm, put it in a steam pressure cooker at 100 ° C for 30 minutes, take it out, and quickly place it in a shaping machine (or press) at 150 ° C at a speed of no more than 20 mm per minute Shaping to a trapezoidal plate with a thickness of 2 cm and a width of 2-4 cm. The steam (0.40Mpa, 145°C) generated by the shaping in the shaping machine is shaped for 20 minutes, and then the pressure is uniformly reduced to a Atmospheric pressure, lower the temperature to below 90°C, take out, and then dry to a moisture content of 12%.

Embodiment 2

[0015] Put the peeled fast-growing fir section with a diameter of 5-7 cm, put it in a steam pressure cooker at 120 ° C for 35 minutes, take it out, and quickly place it in a shaping machine (or press) at 160 ° C at a speed of no more than 20 mm per minute Shaping to a trapezoidal plate with a thickness of 3.5 cm and a width of 3-5 cm. The steam (0.55Mpa, 160°C) generated by the shaping in the shaping machine is shaped for 25 minutes, and then the pressure is uniformly reduced to a Atmospheric pressure, lower the temperature to below 90°C, take out, and then dry to a moisture content of 12%.

Embodiment 3

[0017] Put the peeled fast-growing fir section with a diameter of 8-10 cm, put it in a steam pressure cooker at 150 ° C for 50 minutes, take it out, and quickly place it in the whole machine (or press) at 170 ° C at a speed of no more than 20 mm per minute Shaping to a trapezoidal plate with a thickness of 5 cm and a width of 5-8 cm. The steam (0.80Mpa, 175°C) generated by shaping in the shaping machine is shaped for 40 minutes, and then the pressure is uniformly reduced (the pressure dropped by less than 30Pa per second) to a Atmospheric pressure, lower the temperature to below 90°C, take out, and then dry to a moisture content of 12%.

[0018] Plane the two sides of the trapezoidal shaping strip with a moisture content of 12% after drying, then apply glue and side stitching (the trapezoidal strip can be assembled into a square plate by interlacing the tip and tail) to form a board. If it is to be made into a laminated material, Then double-sided planing, assembly, surface sm...

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PUM

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Abstract

A manufacture method for composing small-diameter wood into integration wood, the technique flow is intercepting the log, classification according to diameter, flay, braising and boiling, fix-deep plastic, shaping, dryness, side dig, using glue, group, smoothing the surface, testing and mending, packing manufacture goods and stock in the storeroom. The integration wood by the invention has the characteristics of higher intensity, higher strength, better rigid, and can be widely used into the calling needs high strength girder, packaging case needs heavy load, and the floor calling of high bearing and good wear-resistance, and enlarges the applied field of high-speed produce small diameter wood, and largely increases its economic and society effect.

Description

technical field [0001] The invention relates to a method for producing glued timber by selecting small-diameter timber through processes such as peeling, cooking, gluing, and compression. Background technique [0002] Fast-growing woods such as fir, poplar, and fir often need to be thinned when they are young. These low-quality materials with large quantities, small diameter at breast height, low density, poor strength, and unstable volume were used as the core of blockboards in the past. The utilization rate of wood is low; it is also used for particleboard, which has poor wood feeling, a lot of glue, and low strength; , length finger joint, wood strip planing, board matching, side gluing, assembly and other processes to make integrated boards. This kind of integrated board made by finger-joining requires a large amount of machining, low utilization rate of wood, and high production cost. For this reason, CN02276395.3 discloses the technology of "direct splicing laminated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27M1/08
Inventor 钱俊马灵飞
Owner ZHEJIANG PANAN COUNTY FOREST SEA CRAFT FACTORY