Working principle of plastic injection molding machine
, plastic injection molding machine, also called plastic injection moulding machine or plastic injection machine.
It is to put the thermoplastic or thermosetting material using plastic molding mold made into various shapes of plastic products mainly molding equipment.
As vertical, horizontal, fully electric.
Plastic injection molding function heating plastic for molten plastic under pressure, the injection and full of mold cavity.
Plastic injection molding machine working principle and operation of plastic injection molding machine is using screw (
The thrust, has good plasticizing molten state (
Is the viscous flow state)
Plastic injection into the closed within a good cavity, after curing finalize the design process of obtained products.
Injection molding is a process of circulation, quantitative feeding each cycle is important to include: -
The molten plasticizing -
Pressure injection -
Molding cooling -
Once again after take out the plastic parts also closed modules, under a cycle.
Lock clamping: die die pull fast approaching, and confirmed that there exists, no foreign body system to high pressure, lock sample together.
Shot forward in place: shoot stage into the specified location.
Plastic injection molding, screw can be set to multistage velocity, pressure and stroke, the cylinder after the soluble material into the cavity.
Cooling and pressure maintaining: according to the set a variety of pressure and time, keep the pressure of the cylinder, in addition to this cavity cooling molding.
Cooling and prediction model: cavity within products continue to cool, in addition to hydraulic motor drive screw rotation push after plastic particles, set screw in the back pressure back under control, if the screw then retreat to the desired location, stop rotating screw, injection oil cylinder according to the set out, is expected to end.
After a shot after Taiwan back: forecast model, shot back into position.
Open die, die pull back to the in situ.
Top: thimble ejection products.
Injection molding method has the advantage of production speed, high efficiency, can realize automation operation, breed of design and color is much, the shape can be replaced by Jane to numerous, size can be bought from big to small, so the products size precision, product upgrading, can into complex shape parts, injection molding used in mass production and complex shape product processing field.
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