Hot Runner Gate
- Details
- Category: Molybdenum knowledge
- Published on 30 March 2015
- Written by limei
- Hits: 241
Hot runner technology development so far, has been formed in the structural design diversification. But to sum up, the feed can be divided into single-point and multi-point feed two categories. Single-point hot nozzle into feed use and external thermal heat type; multi-feed is a component of the structure plate and hot runner nozzle. Either way, the thermal load of the nozzle are given a template, the molten plastic injection molding with great speed crystal gate nozzle directly into the mold cavity when the mold plastic parts in the gate at the nozzle melt separation. Requirements are not drooling, not drawing on a small residual traces of products, to achieve a good cut, forming effect.
Plastic transition from the gate is in the molten state viscous flow state is changing at high-elastic state. Every sharpens viscous flow state of the melt in the vicinity of the gate after the injection of stagnation, but also to ensure that it reaches the lowest molding temperature. Thus, precise control of the temperature and the correct design of the dimensions of the gate near the gate, is the key to the hot runner.
Hot runner nozzle used point gate (excluding cusp containing cusps), vertical gate, valves gate, etc. Wherein the point gate (not containing sharp cusps and points) are commonly heated nozzle.
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