Injection molding of a tire component

US5798127A · kind A · utility

Assignee

• The Goodyear Tire & Rubber Company · US

Inventors

• Ronda Renee Bayer Thayer · Barberton, US
• Robert Leon Benedict · Tallmadge, US
• Larry E. Chlebina · Akron, US
• Bernard Byron Jacobs · Akron, US
• Thomas Andrew Laurich · Tallmadge, US
• Walter George Macesich · Akron, US
• Norbert Majerus · Akron, US
• John S. Rambacher · Akron, US
• William Allen Rex · Akron, US
• Timothy Michael Rooney · Munroe Falls, US
• Mohammad Eghbal Sobhanie · Akron, US
• Albert James Yovichin · Copley, US
• David L. Wolfe · Midland, US
• Daniel Patrick Hentosz · Akron, US

Key dates

• Filing date: Sep 15, 1995
• Grant date: Aug 25, 1998
• Expiry date: Sep 15, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2030/001
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Molds for injection molding tire components have controlled temperature passages leading to a manifold surrounding each mold cavity. The manifold is positioned to minimize weld lines in the injected tire component. In addition, a narrow gate opening between the manifold and mold cavity provides an elevated temperature of the injected material for decreasing the curing time of the tire component in the mold. Blade members may support and position tire components such as bead apex assemblies in the mold. These tire components may be unloaded by an unloader ring in communication with a source of vacuum for pulling the tire component out of the mold.