Jagenberg Aktiengesellschaft

Peter Hoffmann

Gerhard Buschmann

Herbert Schonmeier

Ewald G Welp

Hartmut Dropczynski

Georg Muller

Reinhard Schonen

Hans Leichter

In a winding machine, the space defined by the support cylinders and the winding rolls is sealed and an overpressure is created in this space to relieve the force with which the winding rolls press against the support cylinders. For the purpose, in the area of the two lateral ends of the support cylinders sealing elements are arranged, which for adjustment to various web widths, are axially displaceable and at the same time can be moved away to an area outside the motion range of guide heads and their mounting. In the sealing position of the sealing elements, a fictional-look connection with the support cylinders is avoided.

Winding machine with support cylinders and air pressure relieved wind up

Winding machine with support cylinders

To lift the leading end of a paper web upwardly into contact with the underside of a perforated support roll which draws the web by suction thereagainst, a bar, rod or wire forming an entrainer is lifted by a pair of strands controlled by a windlass to engage the entrainer in a crease at the leading end of the web, the entrainer passing over a pressing roller which can be displaced toward the support roller and is retractable therefrom.

Method of and apparatus for the feeding of a paper web to a roll-making

A device for lifting the leading end of a paper web to the underside of a support drum on which rolls can be formed from the paper web comprises a lifting device which has a suction box pivotal thereon about an axis parallel to the drum axis, so that as the suction box passes between the blades of a longitudinal slitter, it can assume a generally vertical orientation. The suction surface is elastically deformable against the underside of the drum.

Apparatus for applying a paper web to the underside of a roll-making drum

The invention comprises a measuring device and method for the pressing zone width pressure per unit area of this zone and/or additional characteristic variables of a roll of material depending on the pressing surface area. A time interval measured directly or indirectly in which the distance a sensor from the roll of material is either above or below a certain limiting value is obtained by a plurality of sensors positioned on the surface of a roller pressed against the roll. The pressing zone width is automatically computed from this time interval and the speed of the web of sheet material and, if necessary, additional information including the radius of the roll, the weight of the roll of material and the like. The winding of the sheet of material is controlled based upon the ascertained pressing zone width. The pressing zone width and thus also the roll hardness is controlled according to a program by at least a portion of the parameters determining the hardness, these variables or parameter including the geometry of the winding device, the advance of the rollers, (i.e. the angle which the plane through the axis of the roller and the axis of the roll makes with the vertical) the tension on the web of sheet material and/or the pressure of the press roller.

Measuring device for the pressing zone width of a roller on a roll of

A measuring device for determining the pressure zone width and/or surface pressure between a web roll for a web and a further roll of a winding apparatus includes at least one reflex sensor emitting a radiation towards the web roll and receiving radiation reflected from the web roll. The reflex sensor is provided with a source emitting the radiation towards the web roll and a receiver which picks up beams reflected from the web roll. Source and receiver are embedded within the peripheral area of the further roll and are arranged adjacent to each other. During winding of the web, the reception of the radiation is interrupted when the web roll covers the source and/or the receiver. This interruption of the reception is a measure for the pressure zone width and in connection with other variables and constants for the roll firmness.

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Korschenbroich, Germany

Peter Hoffmann