Yarn creels

Details Yarn creels Yarn creels

1995-09-26

1998-05-12

Mansen, Michael

Winding, tensioning, or guiding

Support for a strand material holder

For bobbins

15301, 15346, 57304, B65H 4902, A47L 1500, A47L 514, D01H 1100

Patent

active

057495319

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

This invention relates to apparatus for mounting yarn cones, packages or the like, and to a yarn creel embodying such apparatus.
It is well known that creels are a major source of lint generation, particularly at points where the yarn is drawn off from yarn cones or packages. There is also a tendency for lint to be shed at points where the yarn enters tubes through which it is conveyed to a processing machine, such as a knitting machine. If the generation of lint is left unchecked, then the lint can seriously contaminate the surrounding working environment, giving rise inter alia to fire and health hazards. Also, lint tends to settle on the upper surfaces of cones or packages when these are out of use so that, when those cones or packages are subsequently used, the lint is carried off with the yarn and into the knitting process. This gives rise to faults in the fabric being knitted and consequential loss of production.
In order to deal with this problem, creels are often encased in an enclosure through which an air flow is created, e.g. by means of fans. The air flow entrains most of the lint generated in the creel, and the lint is then removed by passing the air through a filter. This type of arrangement does however rely upon the filter being cleaned regularly to allow free movement of air therethrough. However, such cleaning is a time-consuming process and is frequently not done correctly, if at all.
Also, the fact that the creel is enclosed means that access to its parts is difficult. Although doors are provided in the enclosure to allow an operative e.g. to change the cones or packages and to feed the yarns into the entrance ends of the yarn tubes in the first instance, access is nevertheless rather restricted. Moreover, the enclosure obscures the operative's view of the creel.
De-A-40 30 940 discloses a yarn creel in which lint is dislodged from the yarn cones or packages by means of streams of gas directed from openings in a series of ducts. However, these openings are not disposed particularly close to the cones or packages, and their cleaning action is consequently not particularly efficient.


SUMMARY OF THE INVENTION

According to a first aspect of the present invention, the above-mentioned problems are obviated or mitigated by mounting the cone/package mounting point on the actual duct means from which the gas streams are emitted, and by positioning the openings closely adjacent to those mounting points. Preferably, each opening is directed at a position normally occupied by an upper surface of the cone or package mounted on a respective one of the mounting points. Conveniently, the mounting points are arranged in at least one generally vertical row, and the duct means comprises a respective duct for each row. Desirably, the means for creating a flow of gas is a fan or fans.
According to a second aspect of the present invention, further duct means is also provided adjacent to exit points through which yarn drawn off from the cones or packages is guided to leave the creel, and gas is drawn into the further duct means and is re-emitted into the creel through the openings in the first mentioned duct means. Desirably, the exit points are positioned generally at or adjacent to an entrance or entrances to the further duct means. Advantageously, the exit points are constituted by entrance ends of respective tubes through which the yarn is conveyed from the creel. The tubes can extend along the interior of the further duct means and thence to the exterior of the creel. Means is preferably provided to direct a localized stream of gas over the entrance end of each tube.
Conveniently, the further duct means includes a plurality of openings through which gas is drawn from the creel, the entrance end of each tube being disposed closely adjacent to one of the openings. Preferably, the tubes extend through the openings in the further duct means, with the entrance ends thereof disposed outside the latter. In the case where the creel is circular, the further duct means can comprise

REFERENCES:
patent: 1982997 (1934-12-01), Linder
patent: 2120888 (1938-06-01), Eaddy
patent: 3459010 (1969-08-01), Ferri
patent: 4333201 (1982-06-01), Rohner
patent: 4784349 (1988-11-01), Renwick et al.
patent: 4903367 (1990-02-01), Brunner

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