公开(公告)号：US11712862B2

公开(公告)日：2023-08-01

申请号：US17387383

申请日：2021-07-28

Applicant: VMI HOLLAND B.V.

Inventor： René Dijkstra ,  Henk-Jan Grolleman

IPC: B29D30/24 ,  B29D30/28 ,  B29D30/58 ,  B29D30/26

CPC classification number: B29D30/28 ,  B29D30/242 ,  B29D30/58 ,  B29D2030/2685

Abstract: The invention relates to a belt and tread drum for manufacturing a package of a belt layer and a tread layer into a cylindrical tire component, wherein the belt and tread drum comprises two support surfaces which are arranged spaced apart in a longitudinal direction of said belt and tread drum and which face away from the drum centre line and are radially movable with respect to the rigid support surface from a retracted position in which the tread support surface is arranged at or near the rigid support surface, to a raised position wherein the tread support surface is arranged in a radially outward position with respect to the rigid support surface, and vice versa, and wherein the tread support surfaces are movable in the substantial longitudinal direction of said drum.

公开(公告)号：US11104091B2

公开(公告)日：2021-08-31

申请号：US14906693

申请日：2014-08-14

Applicant: VMI HOLLAND B.V.

Inventor： René Dijkstra ,  Henk-Jan Grolleman

IPC: B29D30/24 ,  B29D30/28 ,  B29D30/58 ,  B29D30/26

Abstract: The invention relates to a method and a building drum (1) for manufacturing a package of a belt layer (6) and a tread layer (7) into a substantially cylindrical tire component, wherein the drum is rotatable about a drum centre line (2) and comprises a rigid support surface (3) for the tire component situated at the outward facing circumferential surface of the drum, wherein the drum comprises two support members (4, 5) which are arranged spaced apart in a substantial longitudinal direction of said drum, wherein the support members (4, 5) each comprises a tread support surface (41, 51) which faces away from the drum centre line and which tread support surfaces are radially movable between a retracted position wherein the tread support surface is arranged at or near the rigid support surface, and a raised position wherein the tread support surface is arranged in a radially outward position with respect to the rigid support surface.

公开(公告)号：US20210354412A1

公开(公告)日：2021-11-18

申请号：US17387383

申请日：2021-07-28

Applicant: VMI HOLLAND B.V.

Inventor： René Dijkstra ,  Henk-Jan Grolleman

IPC: B29D30/28 ,  B29D30/24 ,  B29D30/58

Abstract: The invention relates to a belt and tread drum for manufacturing a package of a belt layer and a tread layer into a cylindrical tire component, wherein the belt and tread drum comprises two support surfaces which are arranged spaced apart in a longitudinal direction of said belt and tread drum and which face away from the drum centre line and are radially movable with respect to the rigid support surface from a retracted position in which the tread support surface is arranged at or near the rigid support surface, to a raised position wherein the tread support surface is arranged in a radially outward position with respect to the rigid support surface, and vice versa, and wherein the tread support surfaces are movable in the substantial longitudinal direction of said drum.