Method for the manufacture of pneumatic vehicle tires using microwave energy
AssigneeSP Reinfenwerke GmbH
InventorsKlaus Unseld, Manfred Gerresheim
Life of this patent
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Abstract
A method for the manufacture of pneumatic vehicle tires with a carcass extending between two bead rings and a breaker disposed between carcass and tread is described in which a tire blank is built up making exclusive use of non-metallic components and at least a part of the thermal energy required in the course of the vulcanization and shaping, which take place under the action of heat and pressure, is introduced into the tire in the form of microwave energy.
Claims23
A method for the manufacture of pneumatic vehicle tires comprising a carcass extending between two bead rings and a breaker arranged between carcass and tread, wherein the respective tire blank is built up using exclusively non-metallic components and at least part of the thermal energy required in the course of vulcanization and shaping which takes place under the action of heat and pressure is introduced into the tire in the form of microwave energy generated by a microwave generation device comprising two parallel circular microwave reflecting plates, the plane of said plates being substantially perpendicular to the axial direction of said tire blank, each of said plates having a central passage opening and a wave guide for direction of generated microwaves into a space between said plates, wherein the microwave radiation is introduced into a heating mold of a tire heating press, said heating mold being disposed within the space during the vulcanization of said tire blank and being used as a microwave container.
The method in accordance with claim wherein said at least one type of material is ceramic material, said ceramic material being at least two different ceramics, selection of said at least two different ceramics taking place in such a manner that the heating mold or regions of the heating mold heat up when subjected to microwaves in a predeterminable manner.
A method for manufacturing pneumatic tires comprising the steps of:
- assembling a tire blank to be vulcanized, said tire blank being formed of exclusively non-metallic components,
- assembling a heating mold for a tire vulcanization container,
- inserting said tire blank within said heating mold, the heating mold being a microwave container,
- assembling a microwave generation device comprising two parallel circular microwave reflecting plates, the plane of said plates being substantially perpendicular to the axial direction of said tire blank, each of said plates having a central passage opening and a wave guide for direction of generated microwaves into a space between said plates,
- inserting said tire blank within said heating mold in the space,
- energizing said microwave generation device for directing generated microwaves into said heating mold within the space to vulcanize the tire blank, and
- vulcanizing said tire blank.
A method for the manufacture of pneumatic vehicle tires comprising a carcass extending between two bead rings and a breaker arranged between carcass and tread, wherein the respective tire blank is built up using exclusively non-metallic components and then vulcanized, and wherein at least part of the thermal energy required in the course of vulcanization and shaping which takes place under the action of heat and pressure is introduced into the tire disposed within a heating mold of a tire heating press in the form of microwave energy, wherein said heating mold is formed of a plurality of types of material, each of said plurality of types of material having characteristic heating properties, the characteristic heating property of one of said plurality of types of material differing from the characteristic heating property of the others of said plurality of types of material upon being subjected to microwave energy.
Dependencies are inferred from the claim text.