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Process of producing plate with small size timber

A small-diameter, craft-based technology, applied in the direction of manufacturing tools, wood processing appliances, and the joining of wooden veneers, can solve the problems of insufficient veneer strength, affecting productivity, and cumbersome assembly of billets, etc.

Inactive Publication Date: 2007-12-19
贺微粒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The connection method of plywood: patent 90102753.7, the method of joining together small veneers with yarn, but the effect is not good, and the usability is poor; patent 97115125.3, the method of finger-jointing small veneers, but this method only increases The line contact length between them can improve the stress condition of the veneer; patent 95121110.2 is a method for joining wooden plywood intermediate boards, but the billet assembly is too cumbersome, which affects productivity; , the butt joint must be in the middle layer of the thick plate and the distance must be greater than 20 cm, otherwise the strength will be affected; there are also miter joints, but it only increases the strength of the joint of the veneer and cannot reach the strength of the veneer itself. Therefore, this method has not been widely used in production; there are also lap joints in which artificial billets are used in thick core plates, but in the thickness direction of the plates, the deformation between the veneer layers is large, extremely irregular, and the strength is not good. Stable; there are other connection methods

Method used

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  • Process of producing plate with small size timber
  • Process of producing plate with small size timber
  • Process of producing plate with small size timber

Examples

Experimental program
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Effect test

Embodiment

[0046] Whole method of thick poplar veneer:

[0047] The poplar wood section is about 650mm long, cut into veneers with a thickness of 3.6mm, and dried;

[0048] The end is processed into rectangular teeth, the specific dimensions are shown in Figure 19 and Figure 20;

[0049] Use phenolic resin glue, dip the joints of the veneers with glue, the dipping amount is about 20%, and dry the veneers at 90°C until the moisture content is about 10%. The rectangular tooth butt joint blanks are shown in Figure 20;

[0050] Hot-pressing parameters, hot-pressing temperature 170°C, 3.6mm thickness gauge controls the thickness of the veneer joint, the compression rate is 31%, after three connections, the length of the whole large veneer is 2520mm (650×4-3×30 ).

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Abstract

The process of producing plate with small size timber includes turning and shearing timber section, shaping sheet, gluing sheets, assembling sheets, forming large board, trimming, gluing, hot pressing, cutting edge and other steps. The present invention can produce plate with smooth flat surface and high strength.

Description

(1) Technical field [0001] The invention is a connection method for the production of small and medium-sized veneers (single-board growth and widening) in the production of veneer-type plates (plywood, laminated lumber, etc.). In the production, the veneer or broken veneer made by rotary cutting small-diameter grades is processed and shaped, and the whole sheet is processed, and the veneer grows and widens into a large-format veneer. Such a large veneer can be used for the middle plate, core plate or surface plate in special cases of veneer type plates. The method belongs to the technical field of production process of veneer boards (plywood, laminated timber, etc.). (2) Background technology [0002] Raw material of plywood: The standard length of wood section of plywood is generally 1.27m and 2.54m. [0003] Rotary cutting of veneer: Due to the use of a shaft-free rotary cutting machine, the wood section can be rotated to 2cm to 3cm. [0004] The connection method of pl...

Claims

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Application Information

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IPC IPC(8): B27D1/04B27D1/08B27D1/10B27G11/00
Inventor 贺微粒贺微波
Owner 贺微粒
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