Back to results
US 4,197,068 AGranted
Apparatus for molding vehicle tires
AssigneeIndustrie Pirelli S.p.A.
InventorAugusto Pizzorno
Life of this patent
Estimating the term…
Abstract
The invention provides an apparatus for molding vehicle tires. Component parts of the tire are molded separately in molds having different shells but using the same core. The parts of the tire are at least partially vulcanized at the same time as they are molded.
Claims14
An apparatus for making tires having sidewalls and a tread, said apparatus comprising:
- a plurality of substantially identically shaped rigid cores;
- a first fixed station for molding and vulcanizing a first part of each tire, said station having a first mold which defines the external profile of the first part of the tire, a first vulcanizing means for the first part and a first transfer section;
- a second fixed station, separate from said first station, for molding and vulcanizing a second part of each tire after the first part is molded and vulcanized at the first station, said second station having a second mold, different in shape from said first mold, which defines the external profile of the second part of the tire, a second vulcanizing means for the second part of the tire, and a second transfer section;
- a third handling station, separate from said first and second stations, for removing each core from the respective tire after the second part is molded and vulcanized at the second station;
- means for moving in succession each core to the transfer section of the first station, then from the frist station with the first part of the tire thereon to the transfer section of the second station, then from the second station with the first and second parts of the tire thereon to the handling station;
- said frist transfer section, said second transfer section and said third station being substantially circumferentially spaced about a substantially vertical axis;
- and
- said moving means comprises a plurality of radially extending arms rotatable in unison about said axis so as to simultaneously move one core with one of the arms to the transfer section of the first station, another core with the first part of the tire with another of the arms to the transfer section of the second station, and yet another core with the first and second parts of the tire thereon to the handling station with yet another of the arms.
5 more elements
An apparatus for making tires having sidewalls and a tread, said apparatus comprising:
- a plurality of substantially identically shaped rigid cores;
- a first fixed station for molding and vulcanizing a first part of each tire, said station having a first mold which defines the external profile of the first part of the tire, a first vulcanizing means for the first part and a first transfer section;
- a second fixed station, separate from said first station, for molding and vulcanizing a second part of each tire after the first part is molded and vulcanized at the first station, said second station having a second mold, different in shape from said first mold, which defines the external profile of the second part of the tire, a second vulcanizing means for the second part of the tire, and a second transfer section;
- a third handling station, separate from said first and second stations, for removing each core from the respective tire after the second part is molded and vulcanized at the second station;
- means for moving in succession each core to the transfer section of the first station, then from the first station with the first part of the tire thereon to the transfer section of the second station, then from the second station with the first and second parts of the tire thereon to the handling station;
- said first transfer section, said second transfer section and said third station being substantially circumferentially spaced about a substantially vertical axis;
- said moving means comprises a plurality of radially extending arms rotatable in unison about said axis so as to simultaneously move one core with one of the arms to the transfer section of the first station, another core with the first part of the tire with another of the arms to the transfer section of the second station, and yet another core with the first and second parts of the tire thereon to the handling station with yet another of the arms;
- said first mold and said first vulcanizing means are radially outwardly of said transfer section;
- and
- said second mold and said second vulcanizing means are radially outwardly of said second transfer section.
7 more elements
Dependencies are inferred from the claim text.