Reifenaufbautrommel und Verfahren zum Aufbauen eines Reifens

Details

Veröffentlichungs-Nr.

EP3450153

Aktenzeichen

EP18191823

Anmeldetag

30. August 2018

Veröffentlichung

29. Juli 2020

Erteilung

29. Juli 2020

Rechtsraum

EP

IPC

B29D30/24B29D30/32

Abstract

A second stage tire building drum is disclosed. The drum (100) comprises a first and second hub (120, 120'), wherein each hub is mounted on a central shaft (110) of the second stage tire building drum (100); wherein at least one of said hubs (120, 120') is configured for unconstrained axial movement on the central shaft (110); and wherein each hub (120, 120') has a bead receiving mechanism mounted on each hub. Also, a method of forming a tire on a tire building drum (100) from a green tire carcass (600) is disclosed. The method comprises the steps of (i) applying a green tire carcass (600) onto the tire building drum (100) by placing a first and second bead onto a first and second respective bead receiving member of the tire building drum, wherein no bead locking force is utilized or (ii) applying a green tire carcass (600) onto the tire building drum (100) by placing a first and second bead onto a first and second respective bead pocket (212) of the tire building drum (100), wherein preferably a relatively low bead locking force is utilized and wherein at least one of the first and second respective bead pockets (212) are configured for unconstrained sliding in the axial direction. The method further comprises the step of inflating the carcass (600) into engagement with a belt and tread package (650) while at least one of the beads is free to move axially inward.

Anmelder

Firma

The Goodyear Tire & Rubber Company

Land

🇺🇸 USA

Fachgebiete