Automatic threading device for filament winding machines

US4155215A · kind A · utility

Assignee

• Zinser Textilmaschinen GmbH · DE

Inventors

• Wolfgang Igel · Großenhain, DE
• Helmut Weiss · Göppingen, DE

Key dates

• Filing date: Feb 3, 1978
• Grant date: May 22, 1979
• Expiry date: Feb 3, 1998

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H15/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A thread monitor moving along a bank of upright spindles surrounded by vertically reciprocable track rings engaged by travelers, designed to facilitate the winding of yarns, rovings or other filaments on cops carried by the spindles, includes a suction tube picking up loose ends of ruptured filaments for tying them to fresh oncoming threads. A filament-threading device moving with the thread monitor comprises a gripper with a closable hook, displaceable on the level of the track ring, and a deflector in the form of a transverse roller eccentrically rotatable about a horizontal axis skew to the spindle axis. A loose thread end held under tension by the suction tube extends from the cop around the deflector in a first pass, lying high enough above an upper ring flange to give clearance to the traveler carried by this flange, and then via the closed gripper hook to the suction tube; upon an advance of the gripper from a retracted position to a working position alongside the ring, a second pass of the thread end comes to lie approximately tangentially to the ring flange at a small inclination to its plane whereby the traveler, driven by a circulating air flow originating at a nozzle on…