Alpine Aktiengesellschaft

Veit-Holger Karl

Franz Mahler

Josef Greisel

A take-away device for a flattened tubing foil forming machine having an improved foil edge position control. The take-away device for tubing foil is formed by an extruder with a tubing blow head carrying out a blowing process. The tubing foil is flattened between a pair of squeeze rollers, which pair of rollers can reversingly turn about a vertical axis of rotation. At least two turning rods are disposed following the squeeze rollers. The turning rods are pivotable about at least one vertical axis, and have, if necessary, at least one deflecting rod. The rods are pivoted by a frame member about a horizontal axis of rotation. A winding-up device receives the flattened tubing foil from the turning rod. A measuring instrument is disposed between the final turning rod from which the tubing foil is guided to the wind-up device, and the wind-up device. The measuring instrument determines the flow position of the edge of the tubing foil and, when the flow position of the edge deviates from a normal flow position, produces a measurement signal which is dependent on the deviation. The signal is conducted to a control means which converts the measurement signal into a control signal. A frame member supporting at least one rod is connected to a servomotor for receiving the control signal for turning the frame member about a pivot having a vertical axis of rotation, in response to the control signal.

Take-away device for tubing foils

A take-away device for a plastic tubing produced in a blowing process in which the tubing is flattened by squeeze rollers followed by a pair of take-away rollers. The pair of take-away rollers which have horizontal axes of rotation swivel reversingly about a vertical axis of rotation. The flattened tubing is fed to a stationary wind-up device, whereby two turning rods over which the flattened tubing is guided, are arranged between the take-away rollers and the stationary wind-up device, and swivel reversingly about the vertical axis of rotation of the pair of squeeze rollers. The first turning rod can thereby be swivelled about a first vertical axis which, together with the take-away rollers, swivels about the vertical axis of rotation of the pair of take-away rollers. The second turning rod can be turned about a second vertical axis which forms a plane with the vertical axis of rotation of the pair of take-away rollers, which extends parallel to the direction of travel of the tubing from the second turning rod to the wind-up device.

Growing community of inventors

Bobingen, Germany

Veit-Holger Karl