Two-color die for automobile instrument boards

Abstract

The invention discloses a two-color die for automobile instrument boards. The two-color die comprises a fixed die plate (1), a movable die rotation disc (2), a product (9), a first die and a second die, the fixed die plate (1) is provided with a soft plastic injection molding port (7) and a hard plastic injection molding port (8), the soft plastic injection molding port (7) is arranged on the first die, the hard plastic injection molding port (8) is arranged on the second die, one end of the first die is fixed on the fixed die plate (1), the other end of the first die is fixed on the movable die rotation disc (2), one end of the second die is fixed on the fixed die plate (1), the other end of the second die is fixed on the movable die rotation disc (2), and the first die and the second die respectively comprises a fixed die fixing plate (3), a fixed die (4), a movable die (5) and a movable die fixing plate (6). The two-color die for automobile instrument boards has the advantages of no generation of wastes, low cost, and guaranteeing of the injection molding quality through controlling the temperature of plastics in a runner.

Description

technical field [0001] The invention relates to a two-color mold, in particular to a two-color mold used for automobile dashboards. Background technique [0002] Two-color molds refer to plastic parts with a clear boundary between two color plastics. Using two or more injection system injection machines, the molding method of injecting plastics of different varieties or different colors into the mold simultaneously or successively is called two-color injection molding, and the mold used is called two-color injection molding mold. . Two-color molds usually have two pairs of molds, one half of which is installed on the fixed plate of the two-color injection molding machine, and the other half is installed on the rotating plate of the movable mold. After the first material is injected, the mold is opened, and the first movable mold rotates 180° with the first product. At this time, the movable mold does not eject, and then the mold is closed, and the second material is inject...

AI Technical Summary

Problems solved by technology

[0003] The car dashboard is a plastic part, and the whole structure is hard plastic injection molding. In order to ensure that the car trim has both strength and shock absorption, it is necessary to inject soft rubber on the hard rubber of the car trim. According to the existing technology, ordinary Two-color molds are used for injection molding. Since there are many grooves for injecting soft rubber, a large number of runners are required to complete the injection molding, and a large amount of waste will be generated after one round of injection molding, which is costly. At the same time, the hard rubber injection molding side and the soft rubber injection molding side As a whole, there is heat transfer between hard rubber injection molding and soft rubber injection molding during the injection molding process, which will interfere with each other, and the temperature of the colloid in the flow channel is unstable, which seriously affects the quality of injection molding

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