Quick Knowledge To Injection Molding
Cavity: Depression in a die casting or plastic injection mold tool, usually on the fixed or non-moving side of the mold. Typically forms the outside, convex and cosmetic face of the part.
Core: One-half of a typical plastic injection or die casting mold tool. This is the moveable, convex half which in turn forms a concave part surface.
Ejector Pin: Round pins of different diameters strategically placed in the mold to push out or eject the formed part during plastic injection molding.
Ejector Plates: Two-part platen system holding the ejector pins for plastic injection molding tools.
Sprue: The first stage in the resin distribution system, where the resin enters the mold. The sprue is perpendicular to the parting faces of the mold and brings resin to the runners, which are typically in the parting surfaces of the mold.
Runner: A channel that resin passes through from the sprue to the gate/s. Typically, runners are parallel to, and contained within, the parting surfaces of the mold.
Locating Ring: locate or align the orifice of the hot or cold sprue with the through-hole in the machine’s stationary platen.
Clamping Plate: A plate fitted to a mold and used to fasten mold to a molding machine.
Gate: It is an orifice through which the melt enters the cavity.
Sprue Bushing: It provides the opening used to transfer molten plastic to the mold cavity, reducing cooling times and produce more rigid sprues.
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