Von Arx Ag

Marianne Heer

Beat Schweizer

Andreas Stucki

A press device comprising a press ring for pressing together tubular workpieces in between, and at least a first and a second pivotable jaw is described. The first jaw comprises a first engagement section and the second jaw comprises a second engagement section. The press ring comprises a first and a second receiving section for receiving the first and the second engagement section of the press jaws, respectively. A first and a second surface of the first and the second receiving section, respectively, contact the first and the second engagement section, respectively. Each comprise a planar surface. The first and the second contact surface oppose each other for applying a press force F. The first contact surface and the second contact surface each comprise at least one convex surface.

Press device

A press device comprising a press ring for pressing together tubular workpieces in between, and at least a first and a second pivotable jaw is described. The jaws comprise engagement sections. The press ring comprises receiving sections for receiving the engagement sections of the press jaws. A first and a second surface of the receiving sections, contact the engagement sections. Each of the first and second surface comprises a planar surface. The engagement sections comprise contact surfaces. The contact surfaces oppose each other for applying a press force F. The contact surfaces each comprise at least one convex surface, such that a radius of curvature r of the first and the second contact surface is larger than half a width Wx, Wz, measured perpendicular to an axis of curvature, of the respective first and second contact surface.

A press ring () for pressing tubular workpieces (), comprising: at least two movable press jaws (); and at least one connecting press jaw () connecting the movable press jaws (); wherein the movable press jaws () are each hinged at their proximal ends to the connecting press jaw () by means of respective bolts (), so that the distal ends () of the movable press jaws () can be rotated towards and away from each other to close respectively open the press ring () to receive a workpiece () therein, and characterized in that the respective bolts () are arranged in elongated holes (), allowing a translational displacement of the bolts () in the elongated holes () upon rotating the movable press jaws ().

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Sissach, Switzerland

Marianne Heer