Friedrich Theysohn Gmbh

Siegfried Topf

A calibrating unit for an extruder includes an inner calibrating member, and a plurality of outer calibrating members at least partially surrounding the inner calibrating member and forming a gap therebetween through which a plastic material may be extruded, the plurality of outer calibrating members including a base member and at least a first lateral member. The calibrating unit also includes an integrated joint connecting the first lateral member to the base member. The first integrated joint includes a circular cylindrical hinge pin integrally formed along a longitudinal edge of the first lateral member, and a cylindrical circular bearing shell formed in the base member. The circular cylindrical hinge pin is received within the circular cylindrical bearing shell of the base member so that the first lateral member is rotatably interconnected to the base member.

Calibration unit for extruded plastic material

The invention relates to a calibrating device for extruded plastics sections, having a number of calibrating units 5 to 7 disposed successively in the drawing-off direction. The calibrating units 5 to 7 are mounted on a guide 1, 2 floatably in the plane normal of the drawing-off direction and disposed on the guide 1, 2, securably in the drawing-off direction. A calibrating device of the kind specified ensures that the precise positioning of the successively disposed calibrating units 5 to 7 is superfluous. Since therefore the section passes the individual calibrating units without lateral deflection or jamming, the individual calibrating unit can be designed with close dimensional tolerances, utilizing the loadability of the section, without introducing an excessive shrinkage into the section.

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Traun, Germany

Siegfried Topf