There are no essential differences between injection molds and other injection moulds, but they also have their own characteristics. many advanced technologies, such as sequence valve hot runner control technology, internal parting surface technology, low pressure injection technology, etc., all have been developed and applied in automobile injection mold preferentially.
1. sequence valve hot runner control technology (SVG Technology)
Sequence valve hot runner control technology (SVG Technology) is a new grade controlled hot runner technology, which solves the problem of appearance defects of traditional multi-point synchronous glue entering products through oil cylinder control in sequence glue. Can effectively avoid auto trim appear weld line, cavitation and other defects, reduce the flow length, lower molding pressure, in the appearance of demanding automobile interior and exterior played a huge role.
2. low pressure double layer injection mold technology
The so-called low pressure double injection mold, also referred to as the low pressure injection mold, injection mold is a new technology, the traditional manual coating, die mold vacuum adsorption directly in the mold parts, one-time injection to complete. The main principle of low pressure injection mold is: injection pressure is low, plastic flow on cloth. When opening the mold, the cloth should be hung on the front mould hanging needle first, then the mold closing, injection and final pick up. The products produced by this technology are greatly improved in decoration, hand feeling and beauty because of a special soft fabric on the surface. Therefore, the low pressure injection mold technology is widely used in the middle and high grade cars, which are generally applied to the skeleton of the car map bag, the ABC column and other parts of the car.
The main principle of the low pressure injection mold is that the injection pressure is low on the cloth. When the mold is opened, the cloth should be hung on the front mold hanging needle first, the mold, the injection molding, and then take the parts.