Machine for the automatic drawing-in of warp threads

US5274894A · kind A · utility

Assignee

• Zellweger Uster, Inc. · CH

Inventors

• Hans-Dieter Wilhelm · Neu-Anspach, DE
• Karl-Heinz Schlegel · Oberschan, CH

Key dates

• Filing date: Aug 2, 1991
• Grant date: Jan 4, 1994
• Expiry date: Aug 2, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B2219/25314
• WIPO field: Control
• WIPO sector: Instruments

Abstract

An automatic drawing-in machine separates warp yarn ends from one another and presents a separated end portion to a pick-up location in alignment with harness components such as a heald and/or a drop wire and/or a reed gap which have themselves been brought to their intended drawing-in positions by different, separately operated systems. Then a drawing-in member engages the yarn end and pulls it through the designed harness component(s). The drawing-in machine (SE) contains a drawing-in member, an arrangement for manipulating the individual harness elements, and a control stage (SM) for controlling the various functions of the drawing-in machine. The latter is composed of modules (PM, SM, XM, AM) for the various functions. The individual modules forming functional, independent units and being connected to one another via interfaces. The modules are controlled by a higher-level computer of the control stage (SM), via which the cross connections between the individual modules also run. The module autonomy enables increased redundancy of individual functions and enables them to be activated individually. In effect, the individual functions depend on one another only to a very small de…