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Valve type hot runner system

Valve type hot runner system is through the use of a needle valve (VALVE PIN) under the action of the valve needle control device at a predetermined time in the manner of mechanical motion to open or close the gate. This type of hot runner system has a lot of style and pouring hot tip nested runner system does not have the advantage. As can be artificially controlled gate switching time, hot runner technology can expand the application of technology fields.

Valve type hot runner systems used more often in recent years, all the major car companies have adopted international runner valve, combined multicolor co-injection mold process to produce the whole lamp shade. In the medical field, people with plastic parts for medical gates extremely strict quality requirements, etc., must not have sharp bumps. In this case, only relying valve gate runner gate system to improve product quality.

The application requirements of valve type hot runner system is the same, with hot tip and nested pouring hot runner system If the the temperature control of valve gate is not good, it will cause serious difficulties in production.If the temperature is too high at the gate, there is danger of plastic glued to the valve needle in the open mold. Conversely, if the temperature is too low at the gate, gate plastic cold, causing the valve needle close difficulties. Valve gate hot runner mold in terms of price and pouring hot tip sets hot runner molds expensive than some. So Valve hot runner system although there are many other two types of hot runner systems do not have the advantage, but it also increases the complexity of the mold.

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