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Back beam for looms

A back beam, loom technology, applied in looms, textiles, textiles and papermaking, etc., can solve problems such as complicated use

Active Publication Date: 2015-11-25
PICANOL NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this requires the leaf springs to be quite large, which can complicate the use of warp beams with larger diameters, in order to make it possible to use leaf springs that are sufficiently soft or slack enough to provide adequate followability.
This type of backrest also has the disadvantage that a certain leaf spring is only suitable for application with a certain warp tension

Method used

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  • Back beam for looms
  • Back beam for looms
  • Back beam for looms

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0053] The figures show schematically different embodiments of the backrest according to the invention. Throughout the drawings, the same elements will be denoted by the same reference numerals. Repeated detailed descriptions of the same elements present in different embodiments are omitted. Elements of different embodiments may be combined to realize other embodiments.

[0054] figure 1 A first embodiment of a back rest 1 according to the invention is shown, comprising a back rest profile 2 and an elastic force element 3 for supporting the back rest profile 2 . The back rest profile 2 has a relatively low weight and is formed from a spring steel sheet with a thickness of about 1.5 mm, which is bent according to a specific shape. The back rest 1 also comprises a support element 4 attached to a load-bearing element 5 , for example using a bolt connection. For example, the load-bearing element 5 is realized as a support beam as part of the loom frame. The support element 4 ...

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PUM

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Abstract

A back rest for guiding warp threads (10) in a weaving machine with a back rest profile (2) provided of a guide section (11) for guiding warp threads (10), wherein the back rest (1) comprises a resilient force element (3) for supporting the back rest profile (2). The back rest profile (2) is arranged pivotable at a support point (7) and the location (13) of application of force (F2) by the resilient force element (3) on the back rest profile (2) is arranged between the support point (7) and the guide section (11) and is distanced from both the support point (7) and the guide section (11).

Description

technical field [0001] The invention relates to a back rest for guiding warp threads in a loom. In particular, the invention relates to a back rest comprising a back rest profile elastically supported by force elements. Background technique [0002] On a loom, the warp threads are unwound from the warp beam and guided via the back rest towards the heald frames. The warp threads will be held with a certain tension defined by the type of warp thread used and the type of cloth to be woven. During weaving, the heald frame moves up and down. During each movement of the heald frame, the tension on the warp varies. This tension causes an undesired tension in the warp which is compensated for by providing a backrest on the loom. A good quality backrest (which can be used both for harder warp threads with low elasticity, for fragile warp threads that are prone to damage) should be kept as unstressed or relaxed as possible to allow undisturbed movement of the warp threads, and at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D49/22
CPCD03D49/22
Inventor G.吉拉尔迪恩A.莫尔曼
Owner PICANOL NV