US 5,613,525 A · Method and apparatus for generating an artificial angular shaft position to operate a weaving machine

Abstract

A weaving machine having a rotating main shaft for driving the weaving machine, with a plurality of accessories on the weaving machine for weaving cloth is provided with an artificial signal of shaft position. A generator generates the artificial signal representing the desired angular position of the main driving shaft of the weaving machine. This generator generates the signal independent of actual angular position of the main shaft. A drive drives the main shaft of the weaving machine. The drive is responsive to the signal for the desired angular position of the main shaft. This drive responds independently of the actual angular position of the main shaft of the weaving machine. At least one weaving machine accessory is present for performing functions on the cloth being woven, such as a thread tensioning device, cloth takeoff device, or nozzle controls, for projectile-type weft insertion. These accessories also receive the artificial signal of desired shaft position, and function responsive to the signal. The arrangement avoids the inevitable inaccuracy introduced when main driving shafts with varying dynamic loads minutely vary at positions of shaft rotation takeoff. An apparatus and method for weaving machine control is disclosed.

Claims13

Dependent claims

In a weaving machine having a rotating main shaft for driving the weaving machine and a plurality of accessories on the weaving machine for weaving cloth, each said accessory performing a function to the cloth as function of the general rotational position of the main shaft of the weaving machine, the improvement comprising:

a weaving machine having a main shaft for being driven in rotation to weave cloth;
a generator for generating a signal representing a desired angular position of the main shaft of the weaving machine independent of an actual angular position of the main shaft;
a drive for driving the weaving machine, the drive responsive to the signal for the desired angular position of the main shaft of the weaving machine independent of the actual angular position of the main shaft of the weaving machine;
at least one weaving machine accessory for performing functions on cloth being woven in the weaving machine as a general function of main shaft rotation of the weaving machine;
and,
means for driving the weaving machine accessory of the weaving machine responsive to the signal for the desired angular position of the main shaft of the weaving machine independent of the actual angular position of the main shaft of the weaving machine.

3 more elements

A method of controlling a weaving machine having a rotating main shaft for driving the weaving machine and a plurality of accessories for weaving cloth, each said accessory performing a function to the passing cloth as function of the general rotational position of the main shaft, the process comprising the steps of:

providing a weaving machine having a main shaft for being driven in rotation to weave cloth;
generating a signal representing the desired angular position of the main shaft of the weaving machine independent of the actual angular position of the main shaft of the weaving machine;
providing a drive for driving the weaving machine, the drive responsive to the signal for the desired angular position of the main shaft of the weaving machine independent of the actual angular position of the main shaft of the weaving machine;
communicating the signal representing the desired angular position of the main shaft of the weaving machine to the drive to drive the rotating shaft of the weaving machine;
providing at least one accessory for performing functions on the cloth woven by the weaving machine, the at least one accessory responsive to the signal representing the desired angular position of the main shaft of the weaving machine;
and,
communicating the signal representing the desired angular position of the main shaft of the weaving machine to the at least one accessory to enable the accessory to perform functions on the cloth woven by the weaving machine.

4 more elements

Dependencies are inferred from the claim text.

Method and apparatus for generating an artificial angular shaft position to operate a weaving machine

Life of this patent

Method and apparatus for generating an artificial angular shaft position to operate a weaving machine

Life of this patent

Abstract

Claims13