公开(公告)号：DE3412619A1

公开(公告)日：1985-10-24

申请号：DE3412619

申请日：1984-04-04

Applicant: BASF AG

Inventor： KAUTZ GERHARD ,  SCHWIND GERHARD

IPC: B29C48/90 ,  B29C48/92 ,  B29C47/00

Abstract: The invention relates to a device for calibrating thermoplastic pipes or profiles emerging from an extruder, having a closed calibrating chamber 3, possibly placed under a vacuum, and a calibrating tool 5 arranged in a coolant bath 4 within the calibrating chamber. The calibrating tool 5 consists of a cylindrical or frustoconical helical spring, the end windings 11 and 12 of which are connected both positively and non-positively to the end flanges 6 and 7 closing off the coolant bath and calibrating chamber respectively. In order to modify the diameter of the calibrating tool 5, at least one end flange 7 can be rotated in an infinitely variable manner.