公开(公告)号：US20200038928A1

公开(公告)日：2020-02-06

申请号：US16598590

申请日：2019-10-10

Applicant: SMS Group GmbH

Inventor： Andreas Wershofen-Crombach ,  Ewald Hagen ,  Stephan Frehe

IPC: B21C23/21

Abstract: A bar and tube extruding press for thrilling metal ingots into profiles, tubes, bars or the like includes a male die and a female die, through which a metal ingot can be pressed by the male die a container, and a driving device, in which the driving device has at least one main cylinder tor applying the main pressing force of the male die to the metal ingots, characterized in that on the one hand the driving device having at least one speed-controlled internal gear pump for providing the hydraulic oil to the at least one main cylinder, with which the at least one main cylinder can be driven, and at least one hydraulic advance and/or return cylinder for moving the male die in relation to the female die or at least one electrical drive for moving the male die in relation to the female die and with which the male die can be moved into a position in which the speed-controlled internal gear pump only then interacts with the at least one main cylinder in such a way that the main pressing force is applied to the male die by the at least one main cylinder.

公开(公告)号：US20170113256A1

公开(公告)日：2017-04-27

申请号：US15311894

申请日：2015-05-21

Applicant: SMS Group GmbH

Inventor： Andreas Wershofen-Crombach ,  Ewald Hagen ,  Stephan Frehe

IPC: B21C23/21

CPC classification number: B21C23/211

Abstract: The invention relates to a bar and tube extruding press for forming metal ingots into profiles, tubes, bars or the like, comprising a male die and a female die, through which a metal ingot can be pressed by means of the male die, comprising a container, and comprising a driving device, in which the driving device comprises at least one main cylinder for applying the main pressing force of the male die to the metal ingots, characterized in that on the one hand the driving device comprises at least one speed-controlled internal gear pump for providing the hydraulic oil to the at least one main cylinder, by means of which the at least one main cylinder can be driven, and in that on the other hand the driving device additionally comprises at least one hydraulic advance and/or return cylinder for moving the male die in relation to the female die or at least one electrical drive for moving the male die in relation to the female die, by means of which the male die can he moved into a position in which the speed-controlled internal gear pump only then interacts with the at least one main cylinder in such a way that the main pressing force is applied to the male die by means of the at least one main cylinder.