Thread drawing-off device and method for the insertion of the _drawn-off thread in an open-end spinning device

US4356691A · kind A · utility

Assignee

• Schubert & Salzer · DE

Inventors

• Rupert Karl · Ingolstadt, DE
• Rudolf Oexler · Ingolstadt, DE
• Edmund Schuller · Ingolstadt, DE
• Erwin Braun · Ingolstadt, DE
• Erick Bock · Ingolstadt, DE
• Franz Schreyer · Ingolstadt, DE

Key dates

• Filing date: Sep 19, 1980
• Grant date: Nov 2, 1982
• Expiry date: Sep 19, 2000

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H4/48
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A pair of draw-off rollers (10, 11) of a thread drawing-off device comprising an over-mounted pressure roller (11) which cooperates resiliently with a driven roller (10) which projects across the front of the pressure roller (11). The pressure roller (11) has at least one recess (113, 114) on its front face (110) which is dimensioned in such a way that it temporarily completely releases a thread (4) sliding along the surface of the driven roller (10) and lying adjacent to the front (110) of the pressure roller (11). By means of a device of this type, the thread (4) is drawn off, for the purposes of joining, to such an extent from the spool (31) that the thread (4) reaches the side (310) of the spool (31) which is facing away from the front (110) of the pressure roller (11) provided with recesses (113, 114). The thread is then introduced into the spinning chamber (2) and is joined. The thread is then guided, using the thread tension, past the front (110) of the pressure roller (11) provided with recesses (113, 114) and introduced into the clamping line of the pair of draw-off rollers (10, 11) and is immediately subjected at this point to a predetermined draw-off.