Device and method for producing knitted fabric
AssigneeTerrot GmbH
InventorsJohannes Barth, Hermann Schmodde, Stephan Geiler, Michael Lau
Life of this patent
Estimating the term…
Abstract
A device for producing knitted fabric comprising a knitting machine and a roving drawing and strengthening unit. The roving drawing and strengthening unit has a roving supply unit, through which a roving can be provided in the form of a fiber bundle that has not been strengthened, a stretching unit, to which the roving can be fed in a conveying direction in the form of at least one sliver, and a spinning nozzle device, through which compressed air can be applied to a drawn roving exiting the stretching unit in a fiber strengthening segment.
Claims21
Device (1) for producing knitted fabric, comprising a knitting machine (2) and at least one roving drawing and strengthening unit (10), which has
- a roving supply unit (3), by means of which a roving (4a) can be provided in the form of a fibre bundle that has not been strengthened,
- a stretching unit (5), to which the roving (4a) can be fed in a roving conveying direction (A) in the form of at least one sliver, and
- a spinning nozzle device (6), by means of which pressurised air can be applied to a drawn roving (4b) exiting the stretching unit (5) in a fibre strengthening segment (60),
- characterised in that
- a gripping roller pair (7), which delimits the fibre strengthening segment (60) and of which the gripping rollers (71, 72) can be rotated in opposite directions, is provided downstream from the spinning nozzle device (6), the gripping roller pair (7) forming a clamping passage for the drawn, strengthened roving (4c) exiting the spinning nozzle device (6), and a feed to the knitting machine (2) for the drawn, strengthened roving (4d) exiting the gripping roller pair (7) being provided after the gripping roller pair (7), proportional valves (63), by means of which the pressurised air supply can be set in proportion to the roving conveying speed of the roving drawing and strengthening unit (10), are integrated into the pressurised air supply of spinning nozzles (61, 62) of the spinning nozzle device (6);
- a plurality of roving drawing and strengthening units (10) assembled in series to form a roving drawing and strengthening module (100), wherein the proportional valves (63) of the spinning nozzles (61, 62) can be actuated by way of the roving drawing and strengthening module (100), and
- the knitting machine (2) performing a master function for the roving drawing and strengthening module (100) so that the knitting machine (2) can provide the necessary rotational speed signal to regulate the air supply to the spinning nozzle device (6) to be proportional to the rotational speed.
Dependencies are inferred from the claim text.