Textiles: knitting – United needle machines – Straight
Patent
1998-10-14
2000-04-18
Worrell, Danny
Textiles: knitting
United needle machines
Straight
66204, D04B 2710
Patent
active
060501111
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a device for driving a thread feed guide, particularly a thread feed guide for patterning which is installed in a warp knitting machine for carrying out desired knitting by leading knitting yarn to a knitting needle.
BACKGROUND ART
In recent years, when a guide bar for supporting a guide needle for feeding thread in a warp knitting machine is concerned, with further complication and size increase of pattern constitution of lace fabric for clothing, a number of so-to-speak pattern guide bars for leading patterning yarns that form pattern structure is increased, in relation to ground guide bars for leading ground yarns that form ground fabric among knitting yarns to be led.
Currently, there has emerged a warp knitting machine referred to as Multibar Raschel having substantially eighty sheets of pattern guide bars.
Under the situation, there is no bounds in insatiable intention for high grade formation of lace pattern and even in the current state, the market is in pursuit of bringing forth gorgeous lace of wide width lace having a dense and complicated pattern constitution which is equivalent to that of slender width lace by further increasing the number of pattern guide bars.
However, as is well known, a pattern guide bar is constructed by constituting a nesting structure (fan shape arrangement, which is referred to as nesting or nest) around a knitting needle row of guide needles (refer to FIG. 20). In FIG. 20, numeral 501 designates a support member fixed to a machine frame 502. Notations 514a, 514b, 514c, 514d, 514e and 514f designate thread feed guides of one unit of nesting, that is, thread feed guides of a nest constituted by taking a set of guides in which thread guide holes of distal ends of guide needles are aligned in one row. Notation N designates the knitting needle row.
Because of the above-described structure, although a number of nests (units) of pattern guide bars can further be increased when enlargement of a motional range of the knitting needles and occupied areas of the guide bars as well as lowering of a rotational number are not considered, the volume of a warp knitting machine is restricted in view of a size of a building and with regard to rotational number, conceivably, the number is not significantly lowered but is increased in view of economic performance.
Attempts have been made to increase the number of guide bars without increasing a nest angle .theta. between a face of a thread feed guide (guide needle and its support portion) for attaching to a frontmost guide bar in one unit of a conventional nest, and a face of the thread feed guide for attaching to a rearmost guide bar. No increase of nest angle .theta. means no significant change of a height of a warp knitting machine and a width thereof in the front and rear direction.
For example, JP-B-47018061 (Japanese Examined Patent Publication No. 47-18061) discloses a guide structure in a warp knitting machine having a constitution in which bar-like members each in correspondence with a guide bar for attaching a thread feed guide of guide needles and the like are held in plural ranks successive in the up and down direction and slidably in the width direction of the warp knitting machine in respect of a lead hanger attached to a plurality of hangers in a fan shape constituting a support member by which a number of the bar-like members for attaching the thread feed guide is increased without increasing a necessary space in respect of a reed oscillating direction (front and rear direction of warp knitting machine).
However, in this case, driving means for causing displacement of the bar-like member comprises pattern wheels, chain links and so on installed at a side portion of the warp knitting machine similar to those in the conventional case of driving reed and accordingly, a comparatively large installation space is needed.
Further, JP-A-06049754 (Japanese Unexamined Patent Publication No. 6-49754) discloses a constitution for driving a guide bar (thread leading reed) for attachi
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Narushima Hiroshi
Nosaka Norimasa
Nippon Mayer Co. Ltd.
Worrell Danny
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