Erhardt Leimer Gmbh

Other

Gerhard Brunner

Wolfgang Krauth

Hans Seibold

Gerhard Alt

Otto Lorenz

Ludwig Zerle

Arnold Sigel

Harald H&auml;ussler

Margrit Scharschinger

A method for detecting the position of the edge of a moving material web by contactlessly scanning the material web with a row of sensors. The sensors generate signals that are filed in a storage unit. A turning point is determined based on the function of the signals received from the sensor locations, and is issued as the edge position.

Method and device for detecting the position of the edge of a moving material web

Edge sensor for a moving strip of material

A process and device for determining the location of at least one edge of a moving web within a measurement zone and in which a linear array of liquid crystal light modulators is interposed between a light source and a light receiver extending transversely to the edge along a scanning zone while a controller successively activates the light modulators to scan a transparent surface zone along the measurement zone. The point at which light is last received (because of obstruction by the edge) or the first received in a pass (because of lack of obstruction by the edge) at the receiver from the source through the scanning transparent zone is used as the measure of the location of the edge.

Process for determining the location of edges and photoelectronic

Identification marks in the form of code fields are arranged on a material band which is adapted to be moved in a continuous manner. These identification marks are recognized by a reader head with a subsequent evaluating logic, whereby under conditions of signal flow produced by the reader head on passing of the code field at the evaluating logic, this signal flow is transformed into identification marking corresponding to the respective code field. Each code field is preceded by a starter label which produces a start signal causing the release of the initially blocked signal flow between the reader head and the evaluating logic and actuates a switch component to assume a transmitting condition. On completion of the signal flow transformation into the identification marking, the signal flow ceases due to actuation of the switch component.

Method of detecting and evaluating identification codes on continuously

A control system is used in combination with a tilt-box arrangement for controlling the transverse displacement of a web and having a stationary support frame and a roller frame pivotal on the support frame about a frame axis and carrying at least one roller rotatable about a roller axis transverse to the frame axis. The web is engaged over the roller and moves in a transport direction transverse to the frame axis and to the roller axis. A drive is connected between the support and roller frames and operates to pivotally displace the roller frame in opposite angular directions from a center position with the roll axis perpendicular to the transport direction toward respective end positions and thereby laterally deflect the web engaged by the roller. The system comprises a sensor holder provided on one of the frames and having two respective end-position sensors and a center-position sensor, a stop holder provided on the other frame and having respective end-position and center-position stops juxtaposable and cooperating with the respective sensors in the respective positions of the roller frame on the support frame, and a controller connected between the sensors and the drive for operating the drive in accordance with the frame position detected by the sensors.

Tilt-box control system

Growing community of inventors

Augsburg, Germany

Gerhard Brunner