Maschinenfabrik Rieter Ag

Other

Rieter Machine Works, Ltd.

Maschinenfabrik Reiter Ag

Erich Jornot

Urs Keller

Urs B Meyer

Giancarlo Mondini

Jurg Bischofberger

Raphael Wicki

Michael Leu

Robert Moser

An apparatus for controlling a fiber processing plant including a series of processing stages in order to supply fibrous material as a product with predetermined qualities, whereby the qualities of the product can be influenced by suitable, selectively adjustable treatment of fibrous material during its passage through the plant and whereby in at least one of the intermediate stages of the plant an ascertainable quality of the product of this stage is determined. In this intermediate stage a signal is obtained which is equivalent to the ascertainable quality and which is used for controlling the previous stages.

Autoleveller draw frame having process feed back control system

An individual regulation circuit is provided for each position-regulated drive motor for a textile machine, such as drafting arrangement. It is contemplated by the invention to have each such regulation circuit encompass a position sensor which also can deliver a position signal during standstill of the motor shaft of the associated drive motor.

Drive for a drafting arrangement

The autoleveller drafting arrangement comprises measuring elements for the throughpassing quantity of textile fibers both at the inlet end and the outlet end thereof. There is provided a system which at least in part is self-adjusting, in order to take account of measuring errors, and thus, to obtain an improved self-adjusting optimization of control and regulation parameters.

Autoleveller drafting arrangement with mass fluctuation control

Draw frame, storage device and coiler, delivery regulation

A draw frame with a main control for a drafting arrangement having at least one independent drive group for at least one drafting zone. Each independent drive group has an auxiliary closed loop control system having a controller. Fiber slivers are drawn through the drafting arrangement through the drafting zones. When the control the range of a certain controller is exceeded, a nominal adjustment of at least one drive group is effected through a control connection.

Drafting arrangement with feedback drive groups

A method and apparatus for controlling a drafting unit for textile slivers. The driving apparatus for the drafting unit is controlled by a main control and at least one auxiliary control. The drafting unit includes an upstream measuring element and a downstream measuring element which deliver measured signals to a central computer unit. A signal representing the inlet sliver cross-section is determined by means of an identification field parameter and by using the downstream measured signal. The identification field parameter is continuously adjusted during operation. A threshold switch is used to control the compensation for irregularities in the incoming sliver.

Method and apparatus for controlling a drafting unit

The invention relates to a spinning can creel for the feeding of textile fiber slivers to a processing machine with which several spinning cans are arranged along a spinning can creel, and a take-off mechanism is assigned to every textile fiber sliver for the transport of the textile fiber slivers. The textile fiber slivers are brought to a processing machine over a transport unit.

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Seuzach, Switzerland

Erich Jornot