Bead core forming former
AssigneeSumitomo Rubber Industries, Ltd.
InventorsJyunki Funane, Eita Kusu
Life of this patent
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Abstract
An annular bead core forming former is for manufacturing a bead core including a wire array in which a bead wire is helically wound in a width direction of the bead core. The bead core forming former comprises a main body portion having an outer circumferential surface with a circumferential groove extending in a circumferential direction for winding the bead wire and at least one width adjusting portion which moves relatively to the main body portion to changes a width of the circumferential groove.
Claims16
An annular bead core forming former for manufacturing a bead core including a wire array in which a bead wire is helically wound in a width direction of the bead core, the bead core forming former comprising:
- a main body portion having an outer circumferential surface with a circumferential groove extending in a circumferential direction for winding the bead wire;
- and
- at least one width adjusting portion which moves relatively to the main body portion to change a width of the circumferential groove,
- wherein the circumferential groove has a groove bottom surface on which the bead wire is placed, and
- wherein the groove bottom surface is provided with a plurality of recessed portions recessed inwardly in a radial direction of the bead core and arranged in the width direction of the bead core.
An annular bead core forming former for manufacturing a bead core including a wire array in which a bead wire is helically wound in a width direction of the bead core, the bead core forming former comprising:
- a main body portion having an outer circumferential surface with a circumferential groove extending in a circumferential direction for winding the bead wire;
- and
- at least one width adjusting portion which moves relatively to the main body portion to change a width of the circumferential groove,
- wherein the circumferential groove has a groove bottom surface on which the bead wire is placed,
- wherein the groove bottom surface has at least one recessed portion recessed inwardly in a radial direction of the bead core,
- wherein the width adjusting portion has a protruding portion for being positioned within the at least one recessed portion,
- wherein the width adjusting portion is fixed to the main body portion with a screw member,
- wherein the screw member is a member different from the protruding portion,
- wherein the protruding portion protrudes radially inwardly so as to be fitted within the at least one recessed portion from radially outside such that a rest of the width adjusting portion other than the protruding portion is positioned radially outside the at least one recessed portion when the protruding portion is fitted within the at least one recessed portion, and
- wherein the groove bottom surface has a plurality of the at least one recessed portion arranged in the width direction of the bead core.
An annular bead core forming former for manufacturing a bead core including a wire array in which a bead wire is helically wound in a width direction of the bead core, the bead core forming former comprising:
- a main body portion having an outer circumferential surface with a circumferential groove extending in a circumferential direction for winding the bead wire;
- and
- at least one width adjusting portion which moves relatively to the main body portion to change a width of the circumferential groove,
- wherein the circumferential groove has a groove bottom surface on which the bead wire is placed,
- wherein the groove bottom surface has at least one recessed portion recessed inwardly in a radial direction of the bead core,
- wherein the width adjusting portion has a protruding portion for being positioned within the at least one recessed portion,
- wherein the width adjusting portion is fixed to the main body portion with a screw member,
- wherein the screw member is a member different from the protruding portion,
- wherein the protruding portion protrudes radially inwardly so as to be fitted within the at least one recessed portion from radially outside such that a rest of the width adjusting portion other than the protruding portion is positioned radially outside the at least one recessed portion when the protruding portion is fitted within the at least one recessed portion,
- wherein the circumferential groove has a pair of inner side surfaces connecting the groove bottom surface and the outer circumferential surface, and
- wherein the main body portion includes a concave portion that is recessed from at least one of the inner side surfaces in a direction away from the circumferential groove such that the concave portion has an upper surface and a lower surface extending in the width direction of the bead core and facing each other in the radial direction of the bead core.
Dependencies are inferred from the claim text.