Device for automatically controlling the edges of a web of sheeting
AssigneeUhlmann Pac-Systeme GmbH & Co. KG
InventorsBERND HAEHNEL, Werner Goetz, Roland Benz
Life of this patent
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Abstract
A device for automatically controlling the edges of a web of sheeting has a first deflecting roller and a second deflecting roller, which are arranged parallel to each other, and also a drive for shifting the deflecting rollers in opposite axial directions. A sensor detects the position of the sheeting. The drive shifts the deflecting rollers in opposite axial directions and the ratio between the friction of the sheeting on the first deflecting roller and the friction of the sheeting on the second deflecting roller is changed on the basis of the position of the sheeting detected by the sensor.
Claims14
A device for automatically controlling edges of a web of sheeting, comprising:
- a first deflecting roller and a second deflecting roller arranged parallel to each other;
- at least one drive for shifting the first and second deflecting rollers in opposite axial directions;
- a sensor for detecting a position of the sheeting;
- a means for changing a ratio between a friction of the sheeting on the first deflecting roller and a friction of the sheeting on the second deflecting roller;
- and
- an automatic control device for controlling the at least one drive for shifting the first and second deflecting rollers in opposite axial directions and for controlling the means for changing the ratio between the friction of the sheeting on the first deflecting roller and the friction of the sheeting on the second deflecting roller based on the position of the sheeting detected by the sensor.
Dependencies are inferred from the claim text.