Extrusion head for wood and bamboo hollow board extruder

Abstract

The invention relates to an extrusion head for manufacturing a wood and bamboo hollow board formed internally and externally in an extrusion forming mode, and aims to provide an extrusion head for manufacturing a wood and bamboo hollow board which is high in static bending strength, insusceptible to longitudinal cracking and high in the performance of a longitudinal water absorption expansion ratio, and the extrusion head is favorable for prolonging the service life of a die. In the technical scheme, in the extrusion head for the wood and bamboo formed hollow board extruder has a plurality of slide holes which are in sliding fit with a core column in a die pressing gap. The extrusion head is characterized in that: at least one row of recesses and bulges which are arranged mutually in a staggered mode are distributed on the end face of the extrusion head; projections, which are perpendicular to the upper surface of the extrusion head, of the recesses and the bulges are in a trapezoid or an arc shape; two rows or more than two rows of recesses and bulges which are arranged transversely are distributed on the end face of the extrusion head; the same row of recesses and bulges are arranged mutually in a staggered mode, and the recesses and the bulges are formed at positions of aligning from top down between the two adjacent rows; and a plurality of long slots which are parallel to axes of the slide holes are formed on wall parts of the slide holes in the extrusion head.

Description

technical field

[0001] The invention relates to a hollow wood-based panel molding and extrusion equipment; in particular, an extrusion head for manufacturing wood and bamboo inner and outer hollow panels by extrusion molding. Background technique

[0002] The manufacture and production of wood and bamboo shaped hollow boards (including artificial hollow particle boards) can turn waste into resources, and then obtain artificial board products with superior performance. This type of product has the advantages of stable performance, low density, heat preservation, heat insulation, sound insulation, and saving raw materials. Door core panels, building interior walls, floors, furniture manufacturing and other fields. Therefore, this type of product is recyclable and biodegradable, and has great economic value and social benefits for building a new industrial model that is resource-saving, environment-friendly, and recyclable, and promoting the upgrading of the traditional wood-b...

Images