Forming mold for HDPE double-wall corrugated pipes

A double-wall corrugated pipe, forming mold technology, applied in household appliances, tubular items, other household appliances, etc., can solve the problems of insufficient melt plasticization of raw materials, unstable product quality, product quality dependence, etc. Benefit and economic benefit, improve production stability, avoid the effect of manual adjustment

Active Publication Date: 2017-11-24
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former easily leads to insufficient plasticization of the raw material melt, which is manifested as a dull product with bubbles; the latter makes the product quality depend on the experience of the employees, resulting in unstable product quality and more waste products

Method used

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  • Forming mold for HDPE double-wall corrugated pipes

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 Shown is that the first embodiment of the HDPE double-wall corrugated pipe forming die of the present invention includes the inner and outer wall forming die body, the inner and outer wall forming die body includes the outer die body 4, the outer layer spiral body 5 and the inner layer spiral body 6, the outer die body 4 and the inner layer spiral body 6 The outer spiral body 5 forms the first outer wall material channel through which the outer layer melt flows, and the outer layer spiral body 5 and the inner layer spiral body 6 form the first inner wall material channel through which the inner layer melt flows. Specifically, both the first outer wall material channel and the first inner wall material channel are spiral structures with continuously decreasing spiral radius, the outer layer melt moves axially in the first outer wall material channel, and the inner layer melt moves in the first inner wall Axial spiral movement is made in the material chan...

Embodiment 2

[0027] Such as figure 1 The second embodiment of the molding die for the HDPE double-wall corrugated pipe shown includes the inner and outer wall forming dies, and the inner and outer wall forming dies include the outer layer die heat adjustment mechanism, the inner layer die heat adjustment mechanism and the die splitter core 11 , between the outer layer die heat regulating mechanism and the die splitting core 11, and between the inner die adjusting mechanism and the die splitting core 11, melt flow channels are formed. Specifically, the outer layer die heat adjustment mechanism includes an outer layer die 10, an outer layer die pressing plate 9, an outer layer die flange 7 and an outer layer thermal expansion screw 8 arranged on the outer layer die flange 7, and the inner layer The die heat regulating mechanism includes an inner die 12 , an inner die pressing plate 13 and an inner thermal expansion screw 14 arranged on the inner spiral body 6 .

[0028] Among them, such as ...

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Abstract

The invention relate to the technical field of forming molds, in particular to a forming mold for HDPE double-wall corrugated pipes. The forming mold comprises an outer mold body, an outer layer spiral body and an inner layer spiral body, wherein a first outer wall material channel allowing outer layer melt to flow is defined by the outer mold body and the outer layer spiral body; a first inner wall material channel allowing inner layer melt to flow is defined by the outer layer spiral body and the inner layer spiral body; and the first outer wall material channel and the first inner wall material channel are each of a spiral body structure with the spiral radius continuously decreasing. By means of the forming mold for the HDPE double-wall corrugated pipes, the runner structure can be optimized, melt plasticization is strengthened, the quantity of bubbles is decreased, the product qualified rate is increased, the structure is compact, production and operation are simple, and a guidance effect on optimization of structural design of the forming mold for the HDPE double-wall corrugated pipes is achieved.

Description

technical field [0001] The invention relates to the technical field of molding dies, and more specifically, relates to a HDPE double-wall corrugated pipe molding die. Background technique [0002] HDPE double-wall corrugated pipe is a new type of pipe with a ring-shaped outer wall and a smooth inner wall. Because of its high mechanical strength, good chemical stability, excellent wear resistance, and low engineering cost, it is widely used in water supply and drainage, sewage discharge, etc. gas and other fields. The quality of HDPE double-wall corrugated pipe is affected by various factors such as raw material quality, molding cycle, objective environment, and molding molds, among which the impact of molding molds is the most significant. [0003] At present, the inner and outer walls of the HDPE double-wall corrugated pipe forming mold mostly adopt a multi-layer ring structure, and the wall thickness adjustment is mostly manually operated by employees. The former is like...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/22B29K23/00B29L23/18B29C48/325
CPCB29C48/10B29C48/30B29C48/325B29K2023/065B29L2023/186
Inventor 邓添华
Owner GUANGDONG LIANSU TECH INDAL
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