Method for automatically producing an elastomer mixture tube, in particular an elastomer mixture tube for producing toothed belts or V-ribbed belts, comprising the following steps: a) making up an elastomer mixture sheet having side faces (14, 16) that lie opposite one another and are complementarily bevelled at an angle; b) positioning the made-up elastomer mixture sheet with the edges (13, 15) thereof that have the complementarily bevelled side faces (14, 16) onto two horizontally arranged, movable gripping devices (8a, 8b); c) fixing the edges (13, 15) with the complementarily bevelled side faces (14, 16) of the elastomer mixture sheet on the gripping devices (8a, 8b); d) positioning the elastomer mixture sheet fixed on the gripping devices (8a, 8b) under a table, over which a pressing bar is arranged at a distance; e) simultaneously or successively swinging the gripping devices (8a, 8b), with the edges (13, 15) with the complementarily bevelled side faces (14, 16) of the elastomer mixture sheet fixed thereon, through 180° in such a way that the said two edges (13, 15) of the elastomer mixture sheet lie facing one another above the table; f) displacing at least one edge of the edges (13, 15) with the complementarily bevelled side faces (14, 16) of the elastomer mixture sheet in such a way that the two complementarily bevelled side faces (14, 16) butt against one another, lying flush one on top of the other; g) connecting the two complementarily bevelled side faces (14, 16) by pressing the pressing bar onto the upper side of the joined-together edges (13, 15) of the elastomer mixture sheet; h) removing the pressing bar and the gripping devices (8a, 8b) and removing the shaped elastomer mixture tube from the table. a) making up an elastomer mixture sheet having side faces (14, 16) that lie opposite one another and are complementarily bevelled at an angle; b) positioning the made-up elastomer mixture sheet with the edges (13, 15) thereof that have the complementarily bevelled side faces (14, 16) onto two horizontally arranged, movable gripping devices (8a, 8b); c) fixing the edges (13, 15) with the complementarily bevelled side faces (14, 16) of the elastomer mixture sheet on the gripping devices (8a, 8b); d) positioning the elastomer mixture sheet fixed on the gripping devices (8a, 8b) under a table, over which a pressing bar is arranged at a distance; e) simultaneously or successively swinging the gripping devices (8a, 8b), with the edges (13, 15) with the complementarily bevelled side faces (14, 16) of the elastomer mixture sheet fixed thereon, through 180° in such a way that the said two edges (13, 15) of the elastomer mixture sheet lie facing one another above the table; f) displacing at least one edge of the edges (13, 15) with the complementarily bevelled side faces (14, 16) of the elastomer mixture sheet in such a way that the two complementarily bevelled side faces (14, 16) butt against one another, lying flush one on top of the other; g) connecting the two complementarily bevelled side faces (14, 16) by pressing the pressing bar onto the upper side of the joined-together edges (13, 15) of the elastomer mixture sheet; h) removing the pressing bar and the gripping devices (8a, 8b) and removing the shaped elastomer mixture tube from the table.