Extrusion forming equipment for PVC pipe production

Abstract

The invention discloses extrusion forming equipment PVC pipe production. The extrusion forming equipment structurally comprises a heating hopper, a machine body, a support seat, a forming head and anextrusion pipe, and the heating hopper is fixedly embedded at the upper end of the extrusion pipe; the machine body is welded on the support seta, and the extrusion pipe is fixedly embedded in the machine body; and the forming head and the extrusion pipe are of an integrated structure. Upon completion of extrusion of PVC plastic, a telescopic block can be quickly pushed to slide downwards throughan elastic piece, so that a lower swing plate can be quickly swung downwards along a plate body; thus, the PVC plastic at the bottom of a lower connecting plate can be loosened, and bounced off downwards through the lower swing plate; and an extending block can be pushed to extend forwards along a combining plate through airflow in an air guide cavity. When a contraction plate loses extrusion of molten PVC plastic, the contraction plate can be pushed to reset upwards through a rebounding strip, so that the extending block can be attracted by reverse airflow to slide backwards; and thus, a PVCplastic layer on the outer surface of a front plate can fall off easily.

Description

technical field [0001] The invention relates to the field of PVC, in particular to extrusion molding equipment for PVC pipe production. Background technique [0002] The extruder for PVC pipe production is mainly used to extrude PVC plastic into pipes. The PVC plastic is melted into molten PVC plastic at high temperature through the heating bucket, and then the molten PVC plastic is extruded through the extrusion rod. The forming head of the solid column provided in the middle extrudes the molten PVC plastic into PVC pipe products, which is a common equipment in the PVC pipe production industry. Based on the above description, the inventors found that an existing extrusion molding equipment for PVC pipe production There are mainly the following deficiencies, for example: [0003] Due to the fast solidification speed of PVC plastic, after the extruder for PVC pipe production finishes extruding the corrugated PVC pipe, the residual PVC plastic at the rear end will squeeze int...

AI Technical Summary

Problems solved by technology

[0003] Due to the fast solidification speed of PVC plastic, after the extruder for PVC pipe production finishes extruding the corrugated PVC pipe, the residual PVC plastic at the rear end will squeeze into the concave surface of the inner wall of the forming head and quickly dry and solidify If you continue to add PVC plastic raw materials for extrusion molding at this time, it is easy to appear that the convex surface of the extruded corrugated PVC plastic pipe is incomplete.

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