Textiles: knitting – United needle machines – Straight
Patent
1995-10-30
1997-10-14
Calvert, John J.
Textiles: knitting
United needle machines
Straight
66205, 66207, D04B 2726
Patent
active
056759932
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a patterning method and device wherein patterning is effected by yarn guides for guiding pattern yarns in a warp knitting machine and fall plates for knitting pattern yarns in a fall plate structure that are individually drive-controlled through drive means.
BACKGROUND ART
As for means for guiding knitting yarns in a warp knitting machine, there are a ground guide bar for guiding ground yarns and a pattern guide bar for guiding pattern yarns. At present, a knitting machine has been developed which has about 80 pattern guide bars, and the development of a knitting machine having a greater number of pattern guide bars has been desired for colorful patterning comparable with Jacquard control; however, there is a problem of limited installation space and hence acceptance has not been realized.
On the other hand, the present applicant has proposed an arrangement in Japanese Patent Kokai Hei 6-49754, wherein a linear motor is directly connected to a yarn guide bar in a warp knitting machine, the movable element of the motor being fixed to the yarn guide bar, thereby controlling the drive of the yarn guide bar.
According to this proposal, although the pattern guide bar, which is a kind of yarn guide bar, having yarn guides mounted thereon for guiding pattern yarns can be driven by directly connecting a linear motor thereto, the fact remains unchanged that all the yarn guides mounted on a single pattern guide bar make the same movement; thus, it is still necessary to increase the number of pattern guide bars in order to provide a colorful pattern. However, it is very difficult from the standpoint of space and it does not pay to mount 100 or more pattern guide bars.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a patterning method and device for a warp knitting machine, which completely changes the concept of conventional drive control of pattern guide bars, wherein patterning devices which can be freely drive-controlled on a pattern guide bar line are installed on individual yarn guides, thereby making it possible to effect free patterning using yarn guides which is comparable with the patterning effect provided by Jacquard control. Another object is to provide a patterning method and device for a warp knitting machine having fall plates, wherein free patterning using yarn guides is possible while the knitting of fall plate structure is also possible.
Further, in a conventional warp knitting machine having fall plates, the knitting of so-called fall plate structure is effected by moving float pattern yarns to be introduced by a float pattern guide bar by actuating stitch forming position of knitting needles to the non-stitch forming position, so that the float pattern yarns are fixed as a float pattern on the back of the knitted fabric; however, since the fall plate is actuated at a time over the entire row of knitting needles, the fall plate is in the form of a single plate extending along the row of knitting needles.
In this warp knitting machine, the fall plate acts simultaneously over the entire width of the knitting machine; therefore, as in the case of simultaneously producing a plurality of knitted fabrics, when it is desired to knit a pattern arrangement which has a plurality of knitting widths and which varies for each width, for example a sink pattern alone or a partial float pattern, the fall plate has to act for each course, with the result that the vibration of the knitting machine is fostered and a large-scale device such as a cam or lever is required.
Thus, a further object of the invention is to provide a patterning method and device for a warp knitting machine, which eliminates the aforesaid drawback and which, without requiring a large-scale device, is capable of effecting the fall plate action for each knitting width, and makes it possible to select the fall plate action in necessary courses.
The present invention provides a patterning method and device for a warp knitting machine which effect pattern
REFERENCES:
patent: 3978690 (1976-09-01), Beling et al.
patent: 4051698 (1977-10-01), Leonhardt
patent: 5140841 (1992-08-01), Offermann et al.
patent: 5241842 (1993-09-01), Hagel
patent: 5327750 (1994-07-01), Speich
patent: 5390513 (1995-02-01), Hagel et al.
Kobayashi Yoshitsugu
Nosaka Norimasa
Ono Kotaro
Otobe Yoshinori
Sumida Kenji
Calvert John J.
Nippon Mayer Co. Ltd.
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