Automobile instrument panel injection mold

Abstract

The invention discloses an automobile instrument panel injection mold which comprises a fixed die plate, a movable die plate and a banana shaped sprue insert; the fixed die plate comprises a positioning ring, a hot runner plate, a fixed die seat plate and a plurality of electromagnetic valves; the hot runner plate is arranged at the top end of the fixed die plate; the electromagnetic valves are uniformly distributed and arrayed on the surface of the side edge of the hot runner plate; the fixed die seat plate is arranged at the top end of the hot runner plate; the fixed die plate further comprises a needle valve type hot nozzle, a slide and an oblique guide pillar; the movable die plate comprises a movable die seat plate, a sprue ejector pin and an ejector pin; the sprue ejector pin is arranged on the left side of the surface of the movable die plate; the movable die plate further comprises a mold foot, an ejector pin panel and an ejector pin bottom plate; the ejector pin bottom plate is arranged in the middle of the surface of a movable die base; the ejector pin panel is arranged on the surface of the ejector pin bottom plate; and the banana shaped sprue insert is arranged on the left side of the interior of the sprue ejector pin. The automobile instrument panel injection mold is simple in operation and extremely excellent in effect, saves the debugging time and also avoids thehigh mold repairing and testing cost caused by a traditional method.

Description

technical field [0001] The invention relates to the technical field of injection molds, in particular to an injection mold for an automobile instrument panel. Background technique [0002] The automobile industry is developing vigorously in our country, and the market competition is becoming increasingly fierce. Various automobile manufacturers have higher and higher requirements for the appearance of the automobile instrument panel. The defects of the current traditional mold are: [0003] 1. The hot runner system of the non-needle valve hot nozzle is adopted, and the gate is poured on the appearance surface or the side gate is poured on the second appearance surface. Even if the gate traces are manually eliminated, It is difficult to achieve the best appearance and surface, and it consumes a lot of labor; [0004] 2. Optimize the flow channel on the mold, optimize the size and position of the gate, improve the exhaust of the mold, etc. to improve the weld line; this meth...

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Problems solved by technology

[0003] 1. The hot runner system of the non-needle valve hot nozzle is adopted, and the gate is poured on the appearance surface or the side gate is poured on the second appearance surface. Even if the gate traces are manually eliminated, It is difficult to achieve the best appearance and surface, and it consumes a lot of labor;

[0004] 2. Optimize the flow channel on the mold, optimize the size and position of the gate, improve the exhaust of the mold, etc. to improve the weld line; this method needs to change the mold many times, try the mold, the instrument seat mold is a large mold, the mold disassembly, repair It is difficult to mold and test molds, which usually takes a lot of time, incurs high costs for mold repair and mold testing, and the effect is often difficult to meet customer requirements;

[0005] 3 At present, the method of optimizing the injection molding process is generally used to eliminate weld lines, such as adjusting injection pressure, speed, mold temperature, material temperature, etc., and this method is also difficult to achieve the best effect; at the same time, the appearance quality is prone to fluctuations during long-term production, that is, It often happens that the initial appearance of production meets the requirements, but after a certain period of production, with certain changes in the production environment such as mold temperature and material temperature, weld lines often reappear or become obvious. The instrument panel is a large injection molded part, a single piece The production cost is very high, and the instability of production quality will bring huge losses to the manufacturer. Therefore, an injection mold for automobile instrument panel is proposed

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