US 5,287,600 A · Method and a device for controlling an opening process, for example at a card

Abstract

A method of controlling the opening of a fiber feed at an opening machine like a cleaning machine or a card, in which an opening element is moved past a fiber feed for loosening and taking over of fibers; simultaneously attenuating the fiber feed; determining an output signal corresponding to the opening degree of the fiber feed; comparing the output signal with a reference or set signal for adjusting at least one opening parameter selected from a group consisting of three variables; operating the opening machine following the adjustment; checking the adjustment with a subsequent output signal after adjustment in order to provide further adjustment in the same sense or further adjustment in the contrary sense or no further adjustment of the selected parameters. A device for carrying out this method is also set forth.

Claims19

Dependent claims

A method of controlling the opening of a fiber feed at an opening machine of one of a cleaning machine and a card, in which an opening element is moved past a fiber feed for loosening and taking over of fibers, simultaneously attenuating the fiber feed, and determining an output signal corresponding to the degree of opening of said fiber feed, comparing said output signal with one of a reference and set signal for adjusting at least one opening parameter selected from the group consisting of:

(a) the relative speed of the opening element past said fiber feed;
(b) the mutual distance of said opening element and said fiber feed;
(c) the position of the needles of a clothing of said opening element;
operating said opening machine following said adjustment;
checking said adjustment with a subsequent output signal after adjustment;
and providing further adjustment in a same direction or an adjustment in an opposite direction no adjustment.

3 more elements

A device for controlling the opening of a fiber feed at an opening machine of one of a cleaning machine and a card, in which an opening element is moved past said fiber feed for loosening one of small amounts of fibers and single fibers from said fiber feed, comprising a control circuit controlling at least one opening parameter selected from the group consisting of:

(a) the relative speed of the opening element past said fiber feed;
(b) the mutual distance of said opening element and said fiber feed;
and
(c) the position of the needles of a clothing of said opening element;
a measuring unit for measuring the degree of opening of said fiber feed at one of said opening element and of a transport element subsequent to said opening element, an output signal thereof being supplied to a memory unit within said control circuit;
means, in said control circuit, for causing an adjustment of said selected at least one parameter;
operating means for adjustment of said at least one selected parameter;
and
means comparing a single historical value or multiple historical values of said output signals stored in said memory unit with a subsequent output signal said after adjustment for checking and signalling said operating means for further adjustment or no adjustment of said selected parameter.

6 more elements

Dependencies are inferred from the claim text.

Method and a device for controlling an opening process, for example at a card

Life of this patent

Method and a device for controlling an opening process, for example at a card

Life of this patent

Abstract

Claims19