A foaming extrusion die suitable for thick pvc wood-plastic molding

Abstract

The invention relates to a PVC (polyvinyl chloride) wood-plastic material processing mould, and discloses a moulding and foaming extrusion mould applicable to a thick and solid PVC wood-plastic material. The moulding and foaming extrusion mould comprises a cooling plate, a mould plate, a converging plate, a mould core bracket plate I, a mould core bracket plate II and a mould body which are sequentially overlapped into a mould head, wherein a mould cavity is formed in the mould head; the mould cavity at the mould plate is a stabilizing section; the mould cavity at the converging plate is a compressing section; the mould cavity at the mould core bracket plate I, the mould core bracket plate II and the mould body is a feeding and diverting section; the moulding and foaming extrusion mould is characterized in that an upper row of core rods, a middle row of core rods and a lower row of core rods are distributed inside the mould cavity to form four circulating layers; the upper row of core rods and the lower row of core rods are connected with the mould core bracket plate I in a positioning way through left and right supporting legs and upper and lower supporting legs respectively; the middle row of core rods are connected with the mould core bracket plate II in a positioning way through the left and right supporting legs. The moulding and foaming extrusion mould can produce the solid PVC wood-plastic foamed material with the thickness greater than 20 mm; products produced by the moulding and foaming extrusion mould are uniform and dense in texture, so that bending resistance, compression resistance, tensile resistance and other performance indexes are greatly improved.

Description

technical field [0001] The invention relates to a mold for processing PVC wood-plastic materials, in particular to a foaming extrusion mold suitable for forming thick solid PVC wood-plastic materials. Background technique [0002] The design of the current solid PVC wood-plastic foaming mold head generally adopts the design of a single row of mandrels and a single-layer support plate. Feasible, but when the thickness exceeds 20 mm, the design of this single-row mandrel group and single-layer bracket plate will increase the thickness of the core due to the increase in product thickness. After the core thickness increases, the middle part of the core will be Insufficient material supply caused a series of problems such as hollow in the middle, depression on the surface of the product, and irregularity. Therefore, the design of this thick solid PVC wood-plastic foaming mold with a thickness of more than 20 mm once became a difficult problem in the industry, causing many extrude...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing solid PVC wood-plastic foaming mold cannot produce thick solid PVC wood-plastic profiles with a thickness exceeding 20mm, and to provide a foaming extrusion die suitable for thick solid PVC wood-plastic molding

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