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Yarn storage type yarn feeder

A yarn supply and yarn storage technology is applied in the field of yarn storage type yarn feeders, which can solve the problems of expensive vulcanization process for ring elements and the like

Pending Publication Date: 2022-02-18
L G L ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] As is known, this solution is appreciated since it greatly facilitates the assembly of the spacer inside the drum, but it has the disadvantage that the treatment to which the ring elements have to be subjected and the subsequent vulcanization process are relatively expensive

Method used

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  • Yarn storage type yarn feeder
  • Yarn storage type yarn feeder
  • Yarn storage type yarn feeder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] First refer to figure 1 A common yarn storage type yarn feeder 10 includes a hollow drum 12, which is suitable for carrying various yarn coils (not shown), and these yarn coils are wound on the drum to form yarn storage. The yarn is adapted to be unwound from mandrel 12 when drawn by a conventional downstream textile machine (not shown). In a manner known per se, before being transferred to the textile machine, the yarn unwound from the drum 12 passes through a weft braking device 14 which controls the mechanical tension of the yarn. The weft thread braking device 14 is not part of the object and aim of the present invention, it may be of conventional type and therefore will not be described in detail here.

[0039] When the drum 12 is empty, a winding device known per se, which in this embodiment comprises a motorized flywheel 16, winds on the drum 12 new yarn taken from an upstream supply spool (not shown). The flywheel 16 is driven by a motor 18 to rotate coaxially...

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PUM

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Abstract

The invention relates to a yarn storage type yarn feeder. Motorized winding means (16) wind loops of yarn on a drum (12). A spacer device (20) is provided with a series of fingers (26) which have an oscillating motion that produces the advancement of the loops of yarn. The fingers (26) are connected to the drum (12) by a partially yielding joint (33) which prevents the rotation of the fingers (26) and allows the oscillating motion. A hollow body (34) of the joint (33), provided in one piece, has an internal annular portion (36) which engages the drum (12) in a per se axially free and rotationally integral manner, an external annular portion (40) which engages the fingers (26) in a per se axially free and rotationally integral manner, and an intermediate portion (48) which is yielding in a longitudinal direction and is substantially rigid in torsion.

Description

technical field [0001] The invention relates to an accumulation yarn feeder provided with spacers for separating coils of yarn wound on a drum. Background technique [0002] As is known, a yarn feeder of the so-called "reserve" type may comprise a drum on which is wound a plurality of loops of yarn forming a reserve. The yarn coils are unwound from the mandrels by means of conventional downstream textile machine pull. [0003] When the drum is empty, a motorized flywheel coaxial with the drum winds new yarn taken from the upstream supply spool onto said drum. [0004] As is known, the yarn feeder can be provided with spacers, the purpose of which is to keep the yarn coils wound on the drum mutually and evenly spaced, thereby ensuring a smooth and regular unwinding of the yarn from the drum, and also Serves to control the tension on the yarn leaving the bobbin. [0005] In a manner known per se, for example from EP 0829442 B1, the spacer may comprise a hub fitted freely on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04B15/48
CPCD04B15/48D03D47/361B65H51/22B65H2701/31
Inventor G·贝尔托奇G·佩德里尼
Owner L G L ELECTRONICS