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AssigneeTrutzschler GmbH & Co. KG
InventorsStefan Holz, Christoph Leinders, Reinhard Hartung
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A drawing mechanism for the doubling and drafting of fiber slivers has a drawing mechanism frame for accommodating the drawing mechanism, which has at least two pairs of rollers each comprising an upper roller and a lower roller and has means for adjusting the spacing of at least one of the lower rollers in relation to another lower roller, in each case having a mounting device for accommodating the lower roller, lower rollers are arranged to be driven by a drive device comprising at least one drive element endlessly revolving around pulley wheels and each lower roller has a roller-driving pulley wheel. In order, by simple means in terms of construction, to make possible a considerable reduction in the work and time required for adjustment of the mounting devices and, accordingly, of the extent(s) of the drawing zone(s) without re-tensioning of the drive belt after the adjustment, at least one guide pulley wheel is attached to each mounting device, and the roller-driving pulley wheel and guide pulley wheel act, in each case one after the other, on both sides of the tensioned drive element.
A drawing mechanism having a drawing mechanism frame, at least two pairs of rollers each comprising an upper roller and a lower roller and having a mounting device for accommodating the lower roller, means for adjusting the spacing of at least one of the lower rollers in relation to another lower roller, and at least one drive device comprising a drive element endlessly revolving around pulley wheels, wherein said pulley wheels comprise a guide pulley wheel provided on a said mounting device and a roller-driving pulley wheel for driving the lower roller accommodated by that mounting device, said roller-driving pulley wheel and said guide pulley wheel acting one after another on opposed sides of the drive element.
Apparatus at a draw frame having a drawing mechanism for the doubling and drafting of fibre slivers, having a drawing mechanism frame for accommodating the drawing mechanism, which has at least two pairs of rollers each comprising an upper roller and a lower roller, having means for adjusting the spacing of at least one of the lower rollers in relation to another lower roller, in each case having a mounting device for accommodating the lower roller, wherein lower rollers are arranged to be driven by at least one drive element endlessly revolving around pulley wheels, characterised in that at least one guide pulley wheel is attached to each mounting device;
Dependencies are inferred from the claim text.