Method and single-cylinder machine for producing socks and the l

Details Method and single-cylinder machine for producing socks and the l Method and single-cylinder machine for producing socks and the l

1999-05-21

2000-12-12

Worrell, Danny

Textiles: knitting

Fabric manipulation

Transferring fabric

66149S, D04B 940

Patent

active

061582522

DESCRIPTION:

BRIEF SUMMARY
SUMMARY AND OBJECTS OF THE INVENTION

The object of the invention is to automate the closure of the toe, i.e. the end of a tubular article, at the conclusion of the knitting of the said article and on the same single-cylinder machine on which the latter was produced.
The invention relates firstly to a single-cylinder sock machine with a hook disc, for closing the toe at the conclusion of the formation of the tubular fabric, which machine is characterized in that it comprises: on the hook disc, means for drawing the tubular fabric to the opposite side of the disc from the needle cylinder; a mechanism for transferring the fabric released by the needles of one semicircle to the fabric-free needles of the opposite semicircle of the cylinder; and means for operating the disc hooks corresponding to the needles of the said opposite semicircle in order to take the loops from the corresponding needles.
For tensioning, at least one pipe may pass through the disc for pneumatic suction of the tubular fabric. Advantageously there are two concentric suction pipes, a first or inner circular-sectioned pipe and a second or outer annular-sectioned pipe, which pass through the disc; and means for switching the suction from one of the said two pipes to the other; this produces tensioning in the second pipe and then inverts the article of tubular fabric by transferring it from the second pipe to the first pipe.
The invention also relates to a method for carrying out the automatic closure of the toe at the final end of the tubular fabric of a sock or other such article, in a single-cylinder knitting machine with a hook disc.
According to this method the developing tubular fabric is drawn upwards, and at the conclusion of the formation of the article and in order to close its toe: needles; which then release the loops of a first half of the final end of the tubular fabric; cylinder needles, which then release the loops of the second half of the said final end; transferred to the needles of the first half of the cylinder needles and the said needles are raised in order to engage the fabric along the second non-run lip; radially out, and the said needles are operated to take the fabric from the hooks and join it to the fabric already engaged by the said needles;
The developing tubular fabric is advantageously tensioned pneumatically in a pneumatic suction pipe passing through the disc. The developing tubular fabric can be tensioned pneumatically in an annular-sectioned suction pipe surrounding an inner pipe, and at the conclusion of the closure of the final end of the tubular article, the suction is switched from the annular-sectioned outer pipe to the inner pipe, so that the tubular article closed and released by the needles is sucked with the three non-run lips into the inside of the article, which is thus straightened out before being released by the needles.
Other features of the invention are defined in the accompanying claims.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference it made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated.


BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings:
FIGS. 1 to 5 show, in axial section, the disc and part of the cylinder in various stages of the process;
FIG. 3A being a view on IIIA--IIIA as marked in FIG. 3;
FIG. 6 shows a plan view basically on VI--VI as marked in FIG. 5;
FIGS. 7 to 16, show, in a similar way to FIGS. 1 to 5, other stages in the process, FIG. 14A being an enlarged detail of FIG. 14;
FIGS. 17 to 23 show, in various successive stages and in axial section, an alternative embodiment of the tensioning system; and
FIGS. 24 to 26 show a modification of the version of FIGS. 17 to 23.
In the version illustrated in FIGS. 1 to 16 of the accompanying drawing, the numeral 1 denotes the

REFERENCES:
patent: 4028910 (1977-06-01), Wignall et al.
patent: 4407145 (1983-10-01), Lonati
patent: 5551260 (1996-09-01), Frullini et al.
patent: 5647229 (1997-07-01), Conti
patent: 5727400 (1998-03-01), Lonati et al.
patent: 5924309 (1999-07-01), Conti

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