Funnel arrangement at the outlet of a card machine

US5016322A · kind A · utility

Assignee

• Maschinenfabrik Rieter AG · CH

Inventors

• Daniel Erni · Duisburg, DE
• Paul Staeheli · Amriswil, CH

Key dates

• Filing date: Nov 21, 1989
• Grant date: May 21, 1991
• Expiry date: Nov 21, 2009

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H5/72
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A funnel arrangement adapted for use at the outlet of a card machine or drawing frame for the purpose of bringing together a sliver traveling along a feed path. The funnel arrangement includes a funnel and an air squeeze-out device following the funnel for squeezing air out of the sliver. The funnel arrangement is located upstream of a downstream funnel used for introducing the sliver into a calender roll pair. A housing surrounds the air squeeze-out device and forms an air discharge chamber which extends at least substantially from the upstream funnel to the downstream funnel. The air squeeze-out device includes openings which allow air to pass into the air discharge chamber, the openings being formed by gaps between convolutions of a frusto-conically shaped coil of wire or by gaps between a plurality of spaced-apart converging rods arranged in a frusto-conically shaped pattern. The funnel arrangement can be mounted so as to be movable away from a calender roll pair or the funnel arrangement can be arranged in two parts which are separable from each other in a direction along the length of the feed path for ease of threading the sliver through the funnel arrangement when the two p…