Installation for processing a paper web or corrugated cardboard web

US9365382B2 · kind B2 · utility

Assignee

• BHS CORRUGATED MASCHINEN-UND ANLAGENBAU GMBH · DE

Inventors

• Maximilian Mark · Tirschenreuth, DE
• Achim Helgert · Pleystein, DE

Key dates

• Filing date: Feb 18, 2014
• Grant date: Jun 14, 2016
• Expiry date: Feb 18, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/8917
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An installation for the detection of projecting material defects in a paper web or corrugated cardboard web moved in a feed direction. The device comprises a sensor device comprising a first sensor unit with a first emitter for emitting first sensor beams and a second emitter for emitting second sensor beams and with a second receiver, wherein the first sensor beams run parallel to the material surface to be monitored of the paper web or corrugated cardboard web and travel along a first signal path S1 in-between. The sensor device further has a second sensor unit comprising a second emitter for emitting second sensor beams and a second receiver, wherein the second sensor beams run parallel to the material surface and travel along a second signal path S2 in-between. The first and second sensor units are oriented in such a way that the distance between the first and second sensor beams relative to the feed direction changes along their signal paths S1, S2.