Pre-foaming equipment for EPS (Expandable Polystyrene) foam product

Abstract

The invention relates to the technical field of foam product production, in particular to pre-foaming equipment for an EPS foam product. The ventilation opening is fixedly formed in the middle position of the upper surface of the foaming barrel in a penetrating mode, and the discharging opening is fixedly formed in the middle position of the lower surface of the foaming barrel in a penetrating mode; the number of the first supporting legs is four, and the four first supporting legs are uniformly and fixedly mounted on the lower surface of the foaming barrel; a feeding mechanism; a feeding mechanism capable of screening out fine powder in foaming raw materials and uniformly conveying the foaming raw materials is fixedly mounted on the right side of the outer surface of the foaming barrel, and the feeding mechanism comprises a feeding barrel. By arranging the feeding mechanism, the raw materials can be uniformly conveyed, so that the foaming ratio of the raw materials is stable; fine powder in the raw materials can be removed while the raw materials are conveyed, so that the granularity of the raw materials is uniform, foam particles are prevented from caking, and the production quality of foam products is improved.

Description

technical field [0001] The invention relates to the technical field of foam product production, in particular to a pre-foaming device for EPS foam products. Background technique [0002] Expanded Polystyrene (EPS) is a lightweight polymer. It is a foamed plastic with a rigid closed-cell structure that uses polystyrene resin to add a foaming agent, and at the same time is heated to soften, generate gas, and form a rigid closed-cell structure. , light weight and high mechanical strength; [0003] The process flow of EPS foam products includes three stages: pre-foaming, curing and molding. Among them, pre-foaming refers to slowly heating the raw material containing the foaming agent to a temperature above 80 °C, the raw material begins to soften, and the foam in the raw material begins to soften. The foaming agent is heated and vaporized to generate pressure, which expands the raw material and forms non-connected cells (closed cells); [0004] Existing pre-foaming equipment ...

AI Technical Summary

Problems solved by technology

However, in the pre-expansion stage of the existing EPS foam products, the phenomenon of agglomeration of the foam particles often occurs, and this phenomenon occurs because the raw material contains fine powder, which leads to uneven particle size of the raw material. In addition, the feeding speed is uneven. Will lead to unstable expansion ratio

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