Manufacturing method of fir floor

Abstract

The invention discloses a manufacturing method of a fir floor. The manufacturing method of the fir floor comprises the operation steps of board sawing, maintaining, drying, shaping, strip sawing, selecting and cutting, square strip splicing, board splicing, machining, hot pressing and varnish baking. According to the manufacturing method of the fir floor, boards are aired in a rainproof ventilatedenvironment, moisture in the boards can be volatilized from the two sides of the board at the same time beneficially, the probability of board cracking and the deformation degree during drying are lowered, and the comprehensive utilization rate of wood is improved. The fir floor is formed in the manner that multiple main square strips and multiple splicing square strips are alternately spliced side by side in a glue joint mode, due to alternate arrangement of wood fibers during glue joint splicing, residual stress in the fir floor square strips is uniform, the probability of warpage and cracking of the fir floor is lowered, and the quality of the fir floor is improved. In addition, on the premise of maximizing the comprehensive utilization rate of wood, the number of saw kerfs of sawn boards and joints of the spliced boards is made most reasonable, and the manufactured fir floor has good attractiveness, comfort and stability.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a method for making fir flooring. Background technique [0002] Chinese fir grows fast and is one of the most important specialty timber species in southern my country, especially in Guangxi. Chinese fir has straight texture and delicate wood, and is widely used in construction, flooring, furniture, etc. The traditional method of making fir flooring is usually to select fir with a tree diameter of more than 140 mm, and process the fir through sawing, planing, cutting and other processes: the length is 450 mm to 900 mm, the width is 90 mm to 120 mm, and the thickness is 18 mm ~ 20 mm fir floor. Because fir is characterized by many knots and cracks, the number of knots and cracks per 500 mm length of the fir floor produced by this method is mostly more than two, and the diameter of the knots and cracks is also greater than 5 mm. Therefore, most fir floors can only become...

AI Technical Summary

Problems solved by technology

Because fir is characterized by many knots and cracks, the number of knots and cracks per 500 mm length of the fir floor produced by this method is mostly more than two, and the diameter of the knots and cracks is also greater than 5 mm. , the high-quality product rate is lower than 30%, therefore, most fir floors can only become commodities with low economic added value; in addition, due to the high moisture content of fir and easy cracking, the comprehensive utilization rate of wood for the production of fir floors is lower than 40%.

[0003] The following problems exist in the production of the existing Chinese fir floor: 1. Although the square bar can be spliced ​​after cutting the knot section and the crack section, if the side length of the cross section of the square bar is too small, the saw seam of the saw board and the joint The joints of the boards will increase, which not only wastes time and labor, but also causes waste of logs, which reduces the comprehensive utilization rate of Chinese fir. In addition, if the side length of the square bar cross section is too small, it will also affect the comfort of the Chinese fir floor; 2. If square If the side of the square is too large, the number of knots and the probability of cracks appearing on the four long boards of the square bar will increase greatly, and the number of knots and cracks that need to be cut will also increase, which will also cause fir cracks. Waste, and the side length of the square is too large, and the thickness of the fir floor board is too thick, which will also cause waste of fir materials and increase production costs