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Yarn feeding unit for rapier looms and projectile looms

A yarn feeding device, projectile loom technology, applied in looms, transportation and packaging, textiles and papermaking, etc., can solve problems such as increased yarn tension, irregularity, irregular yarn geometry, etc., to eliminate The effect of the balloon effect

Inactive Publication Date: 2011-06-29
IRO AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, although the balloon effect and the yarn tension changes caused by the balloon effect are weakened, the input yarn lacks the necessary basic tension, and the yarn geometry is irregular; due to the balloon control ring and storage body There is a gap between the surfaces, the yarn does not change direction continuously through the unwinding end, it only occasionally touches the unwinding end, causing a periodic or irregular increase in the yarn tension upstream of the controllable yarn brake

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Yarn feeding unit for rapier looms and projectile looms
  • Yarn feeding unit for rapier looms and projectile looms
  • Yarn feeding unit for rapier looms and projectile looms

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] Figure 1 to image 3 The yarn feeding device F here is specified for rapier looms or projectile looms. The yarn feeding device F has a housing 1 with a housing support 2 which is at a distance from a stationary drum-shaped storage body 3 and extends beyond the withdrawal end 4 . Arranged on the housing 1 is a winding disc 5 , which can be driven in rotation by a motor not shown, and which has a winding ring 6 , which can rotate relative to the storage body 3 . Adjacent to the unwinding end of the circular storage body 3 in this embodiment, it also has a cylindrical surface region 7 . The storage body 3 is designed as a rod-shaped cylinder as shown in the figure, and in a fixed part, it contains a plurality of rods installed in an alternating cycle and movable rods generated by the separation of the yarns. The cylindrical surface area 7 is designed with a continuous axial extension in the direction of the circumference tangentially of approximately 510 mm on the station...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a yarn feeding unit (F) which is provided with: a stationary storage body (3) for a yarn store (V); a housing arm (2), which extends beyond the draw-off end (4) of the storage body (3) and which supports a coaxial draw-off eyelet (9) in front of the storage body (3); a controllable yarn tension device (10) located downstream from the draw-off eyelet (9), and; a brush ring(B) with an elastic bristle bunches (16), which contact the storage body (4) and, when unstressed, define a smaller inside diameter (d2) than the outside diameter (d1) of the storage body (3) in a cylindrical surface area adjacent to the draw-off end (4). The bristle bunches (16) contact the cylindrical surface area (7) with a predetermined contact force and form a balloon breaker (K) for the yarn section (S) drawn from the yarn store (V) via the draw-off end (4) and into the draw-off eyelet (9).

Description

technical field [0001] The invention relates to a yarn feeding device. Background technique [0002] On the yarn feeding device disclosed in European patent EP 0 622 485 A, the position of the brush pile ring is determined so that the bristle pile touches the unwinding end of the circular storage body from the front, so as to be arranged on the unwind ring. The downstream controllable yarn brake generates a pre-defined, minimum possible basic tension and guides the yarn being pulled to the withdrawal end. Due to the position of the brush ring on the withdrawal end, there is a relatively large axial distance between the yarn storage device on the storage body and the bristle tufts. Because the yarn unwinding on rapier and projectile looms is intermittent and the yarn speed varies greatly, occasional Great centrifugal forces are produced which cause the well-known undesirable balloon effect, ie the yarn is blown up from the surface of the storage body, forming a free-flowing...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H51/22D03D47/34
CPCD03D47/34D03D47/365
Inventor 佩尔·约瑟夫松
Owner IRO AB
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