Injection molding and compression molding method of composite tufted carpet plastic interior ornament

Abstract

The invention discloses an injection molding and compression molding method of a composite tufted carpet plastic interior ornament. The method comprises the following steps of: a, selecting a composite tufted carpet; b, heating the composite tufted carpet; c, opening a mold, fixing the composite tufted carpet in the injection mold, and then closing the mold; d, injecting plastic in an amount which is 10 to 20 percent of the required injection molding total amount under low pressure at a low speed by an injection molding machine through a plurality of hot runners; e, opening the injection moldto reserve certain clearance between a movable mold and a fixed mold, and starting the injection molding machine to inject the rest plastic of the required injection molding total amount under high pressure at a high speed; f, closing the mold, forming the composite tufted carpet plastic interior ornament by pressing, and simultaneously cutting the redundant edge and cooling; and g, opening the mold, and taking out the composite tufted carpet plastic interior ornament. The method is low in production condition requirement, good in product quality and high in production efficiency, the required equipment is cheap, and the produced product can be popularized in a large range.

Description

technical field [0001] The invention relates to the technical field of in-mold injection molding, in particular to a method for injection molding and compression molding of composite tufted carpet plastic interior parts. Background technique [0002] Plastic automotive interior parts are one of the main interior parts of automobiles. They are installed on the side body or door of the driving and passenger space to achieve decoration of the body and sound insulation and noise reduction while protecting the occupants. In order to improve the comfort of the interior of the car body, improve the effect of sound insulation and noise reduction and the safety protection of members, soft fabrics are usually compounded on the surface. For the compounding of soft fabrics, under the existing technical conditions, generally adopt low-pressure injection molding or plastic injection molding body first and then carry out fabric compounding process. After spraying glue on the surface of th...

AI Technical Summary

Problems solved by technology

The production condition requirements of the low-pressure injection molding method and the cost of the low-pressure injection molding equipment are relatively high, so the price of the composite tufted carpet interior parts produced by this method is also relatively high, thus affecting the low-to-medium price of such interior parts. The popularity and use of high-end cars, the popularity of existing low-voltage equipment is low, and the products produced by this equipment have a narrow range of adaptability

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