Basic composition of injection mold structure
The structure of the mold is different from that of plastic products, and its structural design will be varied, but the basic structure is the same.
The basic structure of injection mold is divided into seven parts according to its function:
1.Formed parts
refer to the parts constituting the mold cavity, mainly including punch,
concave die, core, forming rod, forming ring, insert and other parts.
2.Gating system,
which refers to the plastic flow channel in the mold from the nozzle of the
injection molding machine to the cavity. The common gating system is composed
of main runner, shunt runner, gate, cold material cavity, etc.
3.Guiding mechanism,
in the plastic mold, mainly has the functions of positioning, guiding and
bearing a certain side pressure to ensure the accurate clamping of moving and
fixed mold. The clamping guide mechanism is composed of guide post, guide
sleeve or guide hole (directly opened on the template), positioning cone, etc.
4.The ejector
device is mainly used to eject the parts from the mold. It is composed of
ejector rod or pipe jacking or push plate, ejector plate, ejector rod fixing
plate, reset rod and pull rod.
5.Lateral parting
and core pulling mechanism, which is used to disengage the lateral punch or
pull out the lateral core, usually including inclined guide column, bending
pin, inclined guide groove, wedge block, inclined slider, inclined groove, gear
rack and other parts.
6.Cooling and
heating system, whose function is to adjust the mold process temperature, is
composed of cooling system (cooling water hole, cooling water tank, copper
pipe) or heating system.
7.The function
of exhaust system is to exhaust the gas in the cavity, which is mainly composed
of exhaust slot, matching gap, etc.
Share to: