Hot runner injection mould outstanding advantages, is the development direction of injection mold. 1.of the injection molding process, pouring system within the plastic always maintain the molten state, the pressure loss is small, can achieve a large plastic parts of the low pressure injection and multi gate, multi cavity mold, and is conducive to the pressure transfer, so as to overcome the deficiency caused by feeding shrinkage concave scar, improve the quality. 2.save out of work, the aggregate of the gating system of injection molding process simplified operation, be helpful for realizing automation production. At the same time, mold and die distance can be shortened, so as to shorten the molding cycle, improve labor productivity. 3.can be achieved without the waste processing, can save raw materials. In order to reduce the cost of plastic material. But there are also a mould with complicated structure, high manufacturing cost; need to have special nozzle and the temperature regulating system, system complexity, easy fault; design of high technical requirements, such as disadvantage debugging more difficult. |