Screening pavement method of multi-layer structure wood-based panels

Abstract

The invention belongs to the manufacture of wood-based panels. A sieving-type paving method for multi-layered wood-based panels, characterized in that the raw materials mixed with sieveable adhesive are divided into two by a splitter to form a two-layer structure with one at the front and one at the back according to the direction of the production line. The two descending material streams respectively fall on the multi-layer vibrating screen inclined from the front and back to the middle opening, and the materials are layered through sieves with different apertures during the process of moving down the middle opening along the screen surface under high-frequency vibration. After screening, it converges and descends toward the middle opening, and the width of the middle opening of each layer of sieve increases gradually from top to bottom. Finally, the material forms a vertically falling material flow at the opening according to fine-coarse-fine layer arrangement. After being in contact with the forward moving slab, turn to 90° and lay flat on the slab to form a layered slab. The invention solves the technical problem of forming a material flow of fine-coarse-fine layers after sieving the raw materials mixed with glue during the conveying process.

Description

Technical field: [0001] The invention relates to the manufacture of wood-based panels, in particular to a slab laying method for manufacturing multi-layer structure wood-based panels. Background technique: [0002] With the development of the economy, people's requirements for product quality are increasing day by day, and the wood-based panels are also developing into multi-layer structures. The material particles in the center layer of this multi-layer wood-based panel are the largest, and the material particles gradually become thinner from the center to the two sides, so that a smooth and flat surface of the board can be obtained, and the quality and appearance of the product can be improved. To meet this requirement, slabs must be paved in layers. At present, the commonly used method is to use the thinnest material to pave the bottom layer on the slab, and then use the thicker material to lay the second layer on the bottom layer, that is, the material of the rear layer...

AI Technical Summary

Problems solved by technology

Taking the paving of three-layer slabs as an example, 2-3 additional paving heads are required, and 1 each for the feeding system and glue mixing machine. Of course, the energy consumption also increases.

In addition, layered paving in sequence means that the time for paving and the floor space of paving equipment increase. The former reduces productivity, and the latter requires more workshop space.