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Central air conditioning sheet moulding foaming molding method and automated production technology thereof

A central air-conditioning and foam molding technology, applied in the field of foaming, can solve the problems of low production efficiency and achieve the effects of high production efficiency, fast cooling and shaping, and short plasticizing time

Inactive Publication Date: 2018-01-16
ANHUI HONGYUAN MACHINERY MFG
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Dissolve the gas in the liquid polymer or heat the polymer to the molten state to generate gas and form a saturated solution. When the gas in the system exceeds its solubility, the gas escapes to form countless tiny bubbles (called nuclei), Foam nuclei grow to form bubbles, and after the bubbles stabilize, they remain in the plastic to form foamed plastics. This foamed plastics is also called air-expandable foamed plastics. The current foaming method has low production efficiency. Therefore, the present invention proposes a central Compression and foaming molding method for air-conditioning panels and its automated production process

Method used

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Examples

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Embodiment

[0024] A kind of central air-conditioning sheet molding foam molding method, the method comprises the following steps:

[0025] (1) the manufacture of expandable plastic pellets, the manufacture of said expandable plastic pellets is exactly to manufacture the plastic beads that add blowing agent;

[0026] (2) Pre-foaming, the pre-foaming is to heat the plastic beads to expand to a certain extent, so that the density of the product can be further reduced during molding, and the density gradient inside the product can be reduced, and the pre-foamed material still remains It is granular, but its volume is dozens of times larger than the original, commonly known as pre-expansion;

[0027] (3) aging, the aging is the pre-foamed plastic beads, store for a period of time, absorb a certain amount of air, to prevent shrinkage after molding, aging is usually carried out in a large silo or open container, the aging temperature is 22-26 ℃ , the curing time depends on the volume density r...

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PUM

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Abstract

A central air conditioning sheet moulding foaming molding method and an automated production technology thereof are disclosed. The method comprises the following steps: (1) plastic beads added with afoaming agent are manufactured; (2) the beads are expanded to a certain extent by heating; (3) the pre-foamed granular material is stored for a period of time for absorbing a certain amount of air; and (4) a mold cavity is fully filled with the matured granular material, steam passes through the mold cavity for further expanding particles to enlarge the volume, the space of the mold cavity is fully filled with the expanded particles, and the particles are fused as a whole, and cooled and molded. The central air conditioning sheet moulding foaming molding method has the advantages of short plasticizing time, fast cooling and molding, good fusing of the beads in plastic parts, stable quality and high production efficiency, and can realize mechanization and automatic production.

Description

technical field [0001] The invention belongs to the technical field of foaming. Specifically, the present invention relates to a method for molding and foaming central air-conditioning panels and an automatic production process thereof. Background technique [0002] Foam plastics, also known as microcellular plastics, are plastics that contain numerous micropores in the whole, and most of the cells contained in them are interconnected. Foam plastics are called open-cell foam plastics, and most of the cells contained in them are not connected to each other. Foam plastics are called closed-cell foam plastics, which can be used for noise reduction, heat insulation, antifreeze, heat preservation, cushioning, and shockproof. Dissolve the gas in the liquid polymer or heat the polymer to the molten state to generate gas and form a saturated solution. When the gas in the system exceeds its solubility, the gas escapes to form countless tiny bubbles (called nuclei), Foam nuclei grow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/20B29L7/00
Inventor 常前亮赵红霞
Owner ANHUI HONGYUAN MACHINERY MFG
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