公开(公告)号：US11890667B2

公开(公告)日：2024-02-06

申请号：US17232276

申请日：2021-04-16

Applicant: FELSS Systems GmbH

Inventor： Werner Michi ,  Joerg Wachter ,  Dennis Beihofer ,  Philipp Grupp ,  Michael Marré

IPC: B21J9/06 ,  B21J9/20 ,  B21J5/08 ,  B21J5/02 ,  B21K1/06 ,  B21K21/12

CPC classification number: B21J9/06 ,  B21J5/025 ,  B21J5/08 ,  B21J9/20 ,  B21K1/063 ,  B21K21/12

Abstract: In a method for thickening a plastically deformable hollow body wall of a hollow body, with effective radial support of the unthickened hollow body wall on an outer supporting face of an outer mold and with effective radial support of the hollow body wall on an inner supporting face of an inner supporting body, the hollow body is acted on by a compressive force by two application members at application points by moving the application members towards one another in the axial direction with a compressing movement. The application points on the hollow body are distanced from one another in the axial direction. An expansion space of the outer mold is arranged between the application points. Due to the compressing movement of the application members, material of the hollow body wall between the application points is plasticised in the region of the expansion space of the outer mold, and plasticised material of the hollow body wall flows into the expansion space of the outer mold, thus thickening the hollow body wall.

公开(公告)号：US11007564B2

公开(公告)日：2021-05-18

申请号：US15860878

申请日：2018-01-03

Applicant: FELSS SYSTEMS GMBH

Inventor： Werner Michi ,  Joerg Wachter ,  Dennis Beihofer ,  Philipp Grupp ,  Michael Marre

IPC: B21J9/06 ,  B21J9/20 ,  B21J5/08 ,  B21J5/02 ,  B21K1/06 ,  B21K21/12

Abstract: A method for thickening a plastically deformable hollow body wall of a hollow body includes the steps of arranging the hollow body in an outer mold, arranging an inner supporting body inside the hollow body, applying a compressive force to the hollow body wall by means of two application members moving towards one another in an axial direction with a continuous compressing movement, and performing an axial relative movement of the application members performing the continuous compressing movement on the one hand and of the outer mold on the other hand. Due to the compressing movement of the application members, material of the hollow body wall is plasticized and flows into an expansion space of the outer mold, an axial extent of the expansion space increasing due to the axial relative movement of the application members performing the continuous compressing movement and of the outer mold.