Patterning unit of warp knitting machine and control method ther

Details Patterning unit of warp knitting machine and control method ther Patterning unit of warp knitting machine and control method ther

1997-05-28

1999-01-26

Calvert, John J.

Textiles: knitting

United needle machines

Straight

66204, D04B 2300

Patent

active

058626832

ABSTRACT:
The present invention provides a patterning unit of a warp knitting machine in which a stator of a linear pulse motor is assembled in a holding member and a plurality of moving elements are provided at arbitrary intervals on the same holding member with part of the moving elements being constructed as a guide point. A control method increases reliability of accuracy of positioning of the moving elements and eliminates erroneous operation such as step-out by providing a position sensor in connection with the poles and by controlling movement of the moving elements based on detected positions thereof and a set of parameters. The control method includes providing the moving elements each with a linear motor coil assembly for functioning in conjunction with the linear motor stator to move the moving elements along the holding member. The position sensor is for detecting absolute positions of the moving elements along the holding member in increments of a pitch gage of a knitting pattern of the guide members and a pitch gage of poles of the linear motor stator such that positions of the moving elements are detected as a multiple of the pitch gage of the poles of the linear motor stator.

REFERENCES:
patent: 5295372 (1994-03-01), Kemper et al.
patent: 5307648 (1994-05-01), Forkert et al.
patent: 5311751 (1994-05-01), Winter et al.
patent: 5311752 (1994-05-01), Gille
patent: 5473913 (1995-12-01), Bogucki-Land
patent: 5502987 (1996-04-01), Zorini
patent: 5675993 (1997-10-01), Ono et al.

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