Thread brake for weaving looms

a technology of thread brake and weaving loom, which is applied in the direction of weaving, looms, dynamo-electric machines, etc., can solve the problems that the requirements cannot be satisfactorily met at all times by conventional weft thread brakes, and achieve the effects of rapid reaction, precise operation and compact construction

Inactive Publication Date: 2001-09-20
LINDAUER DORNIER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

0016] The drive of the thread brake or rather the control of the weft tension by the operation of the weft brake

Problems solved by technology

It is a disadvantage of known electrically controllable weft thread brakes that they all have a substantial structural size which is inconvenient for installation in a loom, particularly where a plurality of such weft brakes must be mounted in a space

Method used

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  • Thread brake for weaving looms
  • Thread brake for weaving looms
  • Thread brake for weaving looms

Examples

Experimental program
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Embodiment Construction

[0028] FIG. 1 shows a support 1 that may be part of a loom frame or the like. Mountings 2A, 2B are secured to the support 1. Flexible elements 3 and 4 such as lamellae or leaf springs are arranged in pairs and mounted to the mountings 2A and 2B. These flexible elements are preferably curved so that their intermediate sections form a gap G through which a thread 6 guided by thread guides or thread eyes 7 passes from a supply not shown toward the weft insertion as indicated by the arrow head 6'. One of the leaf springs 3 is mounted in a fixed position, while the other leaf spring 4 of a pair is moveably mounted at least with one of its ends. The mountings 2A and 2B are either secured directly to the support 1 or to a mounting bar 5 which in turn is secured to the support 1. As shown, a plurality of leaf springs forming pairs of flexible elements 3, 4 are mounted on the support 1 so that these pairs of flexible elements 3, 4 are arranged side by side in a row or column. As mentioned, t...

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Abstract

At least one of two flexible leaf springs that form a thread gap is controlled by a linearly moveable element of a linear motor or drive. Multi-thread brakes are formed by assembling a plurality of such brakes on a common support whereby a single stator may cooperate with a plurality of linearly moveable armatures forming a corresponding plurality of thread brakes or each thread brake may have its own stator and its own armature arranged in a row either linearly or along a curved support, whereby a compact structure is achieved.

Description

PRIORITY CLAIM[0001] This application is based on and claims the priority under 35 U.S.C. .sctn.119 of German Patent Application 100 13 625.7, filed on Mar. 18, 2000, the entire disclosure of which is incorporated herein by reference.[0002] The invention relates to a thread brake for weaving looms, particularly weft thread brakes for controlling the weft tension.BACKGROUND INFORMATION[0003] Thread brakes for textile yarns are well known in the art. Such brakes are for example used for controlling the weft thread tension in a weaving loom. Many different thread brake constructions are currently in use.[0004] German patent publication DE 34 46 567 C1 shows a weft thread brake with a controllable braking action. The known brake according to said publication comprises two elastic elements forming lamella which face each other to form a weft thread passage or gap. Electromagnetic control means are provided for adjusting or controlling the position of at least one of the lamella or elasti...

Claims

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Application Information

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IPC IPC(8): D03D47/30D03D47/34D03D49/04H02K16/00H02K41/03
CPCB65H59/22B65H2701/31D03D47/34
Inventor LOEHR, HEINZ-PETERSCHUSTER, RAINER
Owner LINDAUER DORNIER GMBH
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