C.a. Weidmuller Gmbh & Co.

Precitec Gmbh

Michael Holzmann

Manfred Jagiella

Georg Sporl

Wolf Wiesemann

Ahmet Topkaya

Peter Schubert

A nozzle for a tool for the working of material and having a nozzle body which is composed of electrically conducting material and carries a nozzle electrode in its tip region with the tip region of the nozzle body and the remaining region of the nozzle body being formed by separate parts which are connected to one another and electrically insulated from one another, the nozzle electrode being in direct electrical contact with the tip region.

Nozzle for a tool for the working of material

A nozzle for a device for machining materials, can be rigidly connected at its end opposite the nozzle tip to a connector head of the device. The connection of the nozzle with the connector head is made by a connecting element (7; 17) made of a brittle material and comprising a break-off region (11; 20). If a collision between the nozzle tip and a workpiece to be machined takes place accidentally, then the connecting element breaks in the break-off region in order to prevent further, even greater damage to the connector head, nozzle or workpiece. The break-off region is crossed by an electrical conductor (14; 27) which breaks in the event of a collision, so that in this way an alarm signal for stopping the device can be generated.

Nozzle comprising break-off region

The invention relates to a nozzle for a tool for working material, for example for laser cutting. The nozzle contains an electrically conducting nozzle body (2), at the tip of which is arranged a nozzle electrode (12) electrically insulated from it. A cap element (15) accomodates the nozzle electrode (12) and is in engagement with the nozzle body (2). At the same time, the cap element (15) presses the nozzle electrode (12) against an insulating body (9). The cap element (15) and the nozzle electrode (12) are insulated from one another by means of an electrically non-conducting layer, making possible shielding of the nozzle electrode (12) a long way into the tip region. The cap element (15) furthermore protects the nozzle electrode (12) from lateral forces in order to avoid damage to the insulating body (9) which accommodates the nozzle electrode (12).

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Rastatt, Germany

Michael Holzmann