A kind of molding method of automobile seat headrest

Abstract

The invention discloses a forming method for an automobile seat headrest. The forming method comprises the following steps that fabric, sponge, film and sponge are compounded and adhered together according to the sequence from outside to inside, processes such as cutting and sewing are carried out, so that a face sleeve is obtained, then a headrest supporting frame is placed in the sewn face sleeve and placed in a die, material injection is carried out through a round hole in the bottom end of the surface sleeve, and a finished headrest product is obtained. According to the forming method, theouter layer sponge is bonded in the composite process of the fabric so as to enable all the air generated in the production process can be absorbed by the outer layer sponge so that the product forming defect can be inhibited, and therefore the product percent of pass is improved; the foaming ratio of foaming raw materials can be improved through stage type slow heating; and material injection iscarried out through the round holes in the bottom end of the surface sleeve so that rapid foaming forming can be realized, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a method for forming a headrest of an auto seat. Background technique [0002] At present, the commonly used one-piece injection process is mainly to obtain the desired shape through flame compounding or glue compounding of fabric + sponge + film, and then through cutting and sewing processes, and then through the foaming machine for injection process, so that in The interior of the shape is filled. This process is easy to operate, but there are problems of high cost and many poor moldings. This is mainly because the bubbles generated during the foaming process cannot be eliminated, and the problem of product sag is likely to occur, resulting in product waste. [0003] The common production method of car seat headrest is to place the headrest support frame in the heated mold, inject material through polyurethane equipment, then polish and trim the foam sponge, and finally ass...

AI Technical Summary

Problems solved by technology

First of all, to make the mold, you need to place a water pipe in the mold to heat the mold, and the air pipe is used to discharge the gas generated during foam molding. Secondly, you need to heat the mold during the production process, and then you need to brush the release agent in the inner cavity of the mold to prevent molding. The final sponge sticks to the mold, and the formed headrest sponge generally has defects, such as burrs, air bubbles, etc., which need to be trimmed and polished to repair the loopholes caused by air bubbles. After assembly, plastic and ironing are required. The process is cumbersome and the amount of work required It is relatively large, wastes resources, and the foaming molding time is about 5 minutes long, resulting in low production capacity and heavy production cost burden. In view of this, it is necessary to improve the traditional molding method of car seat headrests