Preparation process and equipment of physical foaming material

Abstract

The invention discloses a physical foaming material preparation device which comprises an extrusion unit which comprises a base, an extrusion motor installed on one side of the base, an extrusion sleeve arranged on the other side of the base and a material storage unit. The device comprises an outer heating cylinder, an inner storage cylinder arranged on the inner side of the outer heating cylinder, and a stirring motor arranged on the inner storage cylinder, the shaping unit comprises a lower mold, an upper mold arranged above the lower mold, and a plurality of guide rods symmetrically arranged on the lower mold, materials are conveyed between the material storage unit and the shaping unit through a metering pump. Raw materials extruded by the extrusion unit are directly guided into the inner storage cylinder to be stored, heating and heat preservation are conducted through the heating element in the outer heating cylinder, then metering is conducted through the metering pump, and the raw materials are output into the shaping unit, so that the production error-tolerant rate is greatly increased through the assembly line type process mode.

Description

technical field [0001] The invention relates to the technical field of foaming, in particular to a preparation process and equipment for a physical foaming material. Background technique [0002] Foaming is the general term for making foam molding methods. According to the classification of foam plastic manufacturing methods, it can be divided into two categories: the method of making foam plastic by one process after the foaming plastic raw materials is called one-step foaming method, and It is called the direct method, and polyurethane foam is its typical representative; the method of making foam from two processes is called the two-step foaming method, also known as the batch method. In two-step foaming, the previous process is called pre-foaming or pre-foaming. At this time, the foam or beads have not yet fully expanded and the density is relatively high. The beads thus obtained are expandable beads. The latter process, known as post-expansion or secondary expansion, pr...

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Problems solved by technology

[0003] The existing preparation process equipment usually directly injects the molten raw material into the mold for foaming, but due to the uncontrollable temperature in the intermediate process, the raw material needs to be rapidly foamed after the basic melting, and its production The fault tolerance rate is low, and the extruder needs to work easily and cannot be shut down

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