EPP seat foaming die and foaming technology

Abstract

The invention discloses an EPP seat foaming die and a foaming technology. The EPP seat foaming die comprises an upper template and a lower template. An upper die core is arranged in the upper template, and a lower die core is arranged in the lower template. A plurality of positioning blind holes are formed in the edge position of the lower surface of the upper die core. Magnetic inserts are embedded in the positioning blind holes. A framework steel wire is adsorbed to the bottom of each magnetic insert. The adjacent framework steel wires are connected in an end-to-end manner, and the shape matched with the outer edge of a seat product is defined by all the framework steel wires. According to the foaming technology, the magnetic inserts are embedded in the corresponding positioning blind holes in the upper template, the framework steel wires connected in the end-to-end manner are stably adsorbed to the bottoms of the magnetic inserts, the upper template and the lower template are assembled and combined into the foaming die, and after EPP foam particles are subjected to pressure loading, the EPP foam particles are injected into the die through a spray gun to be formed. Through the foaming technology and the foaming die matched with the foaming technology, the EPP raw materials and the framework steel wires can be integrally formed, the strength of the edge of a formed seat body is improved, and accordingly staggering of the pressurized seat and a seat cover is avoided.

Description

technical field [0001] The invention relates to the technical field of auto parts processing, in particular to an EPP seat foaming mold and a foaming process. Background technique [0002] As one of the most important components in a car, the weight reduction of seats has always been the focus of car manufacturers. At present, for car seats, the skeleton is mostly made of steel, so that the skeleton part accounts for about 50-60% of the total weight. In order to effectively reduce the weight of the seat skeleton, most manufacturers use EPP materials to make seats. EPP materials have Good strength, hardness and energy absorption characteristics, and high recycling rate, which can avoid the steel frame inside the seat, making this material a main material in the lightweight research of automobile frames. [0003] There are also some problems in the application of EPP materials in seat manufacturing. For example, the seat is foamed with EPP material as a whole. If the edge st...

AI Technical Summary

Problems solved by technology

[0003] There are also some problems in the application of EPP materials in seat manufacturing. For example, the seat is foamed with EPP material as a whole. The edge strength is too low, it is easy to be severely deformed under pressure, which will cause the seat cover to be misaligned with the seat, and it is very troublesome to restore

Images