Plastic injection molding is an important methodofmolding, which apply mainly to the thermoplastic plastic molding, can be a complex shape of the precision molding plastic parts.
注射成型是塑料成型的一种重要方法，它主要适用于热塑性塑料的成型，可以一次成型形状复杂的精密塑件。
2
Complex parts only can adopt the methodof multi-box molding, difficulty is increased, casting is easy to cause dislocation, increase the workload of cleanup and machining.
复杂件只能采用多箱造型的方法，难度增加，铸件容易产生错位，增加清理和机加工的工作量。
3
The moldingmethod, process, and the equipment of thermoset runnerless injection molding have been discussed in this paper.