Injection mold capable of leaving no parting lines on outer grooves of automobile door interior trim products

Abstract

The invention discloses an injection mold capable of leaving no parting lines on outer grooves of automobile door interior trim products. The injection mold comprises a mold cavity (1), a mold core A(2), a mold core B (3), an inclined ejection mechanism (4) and a straight ejection mechanism (5). The core-pulling demolding direction, corresponding to a handle groove part, of the mold cavity is thelongitudinal direction. The mold core A is provided with a model for forming product back molded surfaces and stud and ring buckle structures. The B mold core is provided with a model for forming product handle groove back molded surfaces and ring buckle structures. The inclined ejection mechanism is composed of inclined ejection oil cylinders, inclined ejection ejector rods, an inclined ejectionejector sleeve and an inclined ejection inclined core pulling part. The straight ejection mechanism is composed of a straight ejection ejector rod, a straight ejection plate and a straight ejection inclined core pulling part. By means of the technical scheme of setting the core-pulling and demolding direction of the handle groove part as the longitudinal direction to make the mold cavity into a whole and moving the parting lines to the back surfaces of the products, the aims of improving the appearance quality, ensuring the quality consistency, lowering the work intensity, improving the production efficiency and increasing the percent of pass are achieved for injection molding production of the automobile door interior trim products.

Description

technical field [0001] The invention relates to an injection mould, in particular to an injection mould, which is used for injection molding an interior switch panel product of an automobile door, and has no parting line on the outside of the interior groove of the automobile door interior product. Background technique [0002] illustrate: [0003] When the injection molding product is used, the side that faces or is exposed to the outside world is called the outside or the outside, and the side opposite to the outside is called the back or the back; the exterior appearance and feel of the injection molding product have high quality requirements, and there must be no defects; [0004] During injection molding, the intersection of the core and the cavity will form a linear intersection mark on the surface of the product, which is called the parting line. The parting line is a defect of the product, which is usually eliminated by manual scraping with the help of cutting tools;...

AI Technical Summary

Problems solved by technology

[0007] refer to Figure 6 ~ Figure 8 A car door interior switch panel product is referred to as the product, the right part of the product is provided with a groove-shaped hand groove, and the back of the product is provided with studs and many buckles with the nature of an inverted buckle. The core-pulling direction of the column intersects obliquely with the core-pulling direction of the buckle groove and the ring buckle; for the product, the prior art adopts the method of setting the core-pulling direction of the stud to the longitudinal direction, so as to facilitate the screwing of the stud and the ring buckle. Core-pulling and demoulding, so that the core-pulling direction of the handle groove can only be set to the oblique direction. Since the handle groove is located outside the product, the outside of the product involves the cavity of the mold, and it is carried out in the cavity of the mold. Diagonal parting and core-pulling demoulding will form the defect of the parting line at the edge of the hand-clasp groove. Manual scraping of the parting line will make the appearance and feel of the product poor in quality and consistency, and the work intensity will be high , the production efficiency is low, and the qualified rate of the product is low. In addition, after injection molding, before the mold is opened, the core block in the mold cavity must be demolded by oblique core pulling, so that the whole process of product demoulding takes a long time and the efficiency is high. Low; therefore, the prior art has the problems and deficiencies of poor quality, poor consistency, high work intensity, low production efficiency, and low pass rate

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