Bent part injection mould

Abstract

The invention discloses a bent part injection mould which comprises a mould body and a manipulator device. The mould body is provided with an injection moulding part and a correcting part which shapes a product through the manipulator device; the mould body sequentially comprises a fixed base, a movable plate, push plates and a cavity plate, the injection moulding part comprises a core plate, a fixed mould plate, a sprue bush, a sprue bush fixing plate and a pouring gate, wherein one cavity is matched with a core of the core plate, the core plate is connected with the fixed mould plate through a pull rod, and the pull rod is provided with a pull rod spring; the correcting part comprises a correcting body and a hydraulic cylinder. The bent part injection mould can achieve injection moulding and shaping simultaneously, improve the production efficiency of injection moulding parts and reduce buckling deformation of the products.

Description

technical field [0001] The invention relates to the technical field of designing injection molds, specifically, an injection mold for curved parts. Background technique [0002] Injection molding is a method of extruding high-temperature molten plastic into the mold cavity, but because of the slow filling speed of the mold, the temperature of the moving mold and the fixed mold are inconsistent, and the product is pushed out before it is completely hardened, it is inevitable. Part of the internal stress remains inside the molded part, which leads to deformation phenomena such as warping, bending and twisting of the product. This is one of the most common defects in plastic products, especially for curved parts. This deformation is more common. Enterprises in injection molding During the molding process, on the one hand, adjust the parameters of the injection molding process to reduce the amount of deformation, and on the other hand, take some auxiliary means to reduce the def...

AI Technical Summary

Problems solved by technology

[0002] Injection molding is a method of extruding high-temperature molten plastic into the mold cavity, but because of the slow filling speed of the mold, the temperature of the moving mold and the fixed mold are inconsistent, and the product is pushed out before it is completely hardened, it is inevitable. Part of the internal stress remains inside the molded part, which leads to deformation phenomena such as warping, bending and twisting of the product. This is one of the most common defects in plastic products, especially for curved parts. This deformation is more common. Enterprises in injection molding During the molding process, on the one hand, adjust the parameters of the injection molding process to reduce the amount of deformation, and on the other hand, take some auxiliary means to reduce the deformation of the product, such as cooling the product alone, which requires a cooling room, which is costly and inefficient; according to the shape of the product, Make auxiliary shaping tooling, put the product just ejected from the mold cavity into the tooling to set the shape and keep the pressure for a period of time, etc. This method requires outsourcing and customizing a large number of shaping tooling, and it is also necessary to maintain the pressure of each product separately, which is inefficient ,high cost

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