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1. (WO2017036610) SEALING HEAD, DEVICE AND METHOD FOR PRODUCING BIMETALLIC PIPES

Pub. No.:    WO/2017/036610    International Application No.:    PCT/EP2016/055438
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Tue Mar 15 00:59:59 CET 2016
IPC: B21D 39/04
B21D 26/045
B21D 26/051
B21C 37/15
Applicants: ZS ZYLINDER-SERVICE GMBH
Inventors: MOHRMANN, Michael
Title: SEALING HEAD, DEVICE AND METHOD FOR PRODUCING BIMETALLIC PIPES
Abstract:
The invention relates to a sealing head (K1, K1'), a device and a method for producing double-walled pipes, in particular bimetallic pipes, wherein each double-walled pipe is produced from an outer pipe (1) and an inner piper (2), wherein the sealing head comprises a base unit (3, 4, 5) in which a piston (6) is mounted to move axially, wherein the piston (6) can be adjusted relative to the base unit (3, 4, 5) in particular in a first axial direction (clamping direction RK), in particular by means of a hydraulic medium found in the inner pipe (2), by means of an external pressure source or by means of a drive with an electric motor, and at least one clamping means (9), in particular an annular pressing part having wedge-shaped guide surfaces (9b), can be adjusted by means of the piston (6) in order to clamp the end region (2a) of the inner pipe (2) in the sealing head (K1).