Lattice gate for drop gate injection molding
AssigneeThe Goodyear Tire & Rubber Company
InventorsRobert Henry Vogliano, Mark Russell Miller, John Richard White
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Abstract
The present invention is directed towards the hybrid combination of a drop gate injection molding system and a lattice gate. The lattice gate is located prior to the orifice of the drop gate. The lattice gate is comprised of a series of cross-direction flow channels through which the rubber flows, with mixing of the rubbers at the intersections of the flow channels. This hybrid molding system permits shorter cure times, and improved process cycle time for curing rubbers.
Claims3
A method of drop gate injection molding rubber, the method comprising injecting a rubber into a drop gate, through drop gate runners and into a mold cavity, the method being characterized by:
- the rubber flowing at cross angles after the rubber is injected into the gate and before the rubber enters into the drop gate runners.
A drop injection gate for injection molding rubber into a mold cavity, the gate comprising drop gate runners, the gate being characterized by:
- the gate having a region adjacent to the drop gate runners comprising a first and a second plurality of spaced flow channels disposed at intersecting angles to each other to create cross direction flow of the rubber before the rubber enters into the drop gate runners.
Dependencies are inferred from the claim text.