US 5,645,111 AGranted

Device for controlling operations of shaft frames of a weaving machine

AssigneeTexo AB

InventorBo Lindblom

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Abstract

In a weaving machine a control unit for controlling the movement of the shaft frames or harnesses creates a feedback function through load cells and AC-servo motors that enables accurate shaft frame adjustment in forming an open shed. The weaving machine includes detecting mechanisms that detect parameters regarding condition the shaft frames. An individual control unit controls each of the shaft frames. The control units adjust the shaft frames in one or more positions to create open and closed sheds in the warp threads to enable the weft threads to be inserted by the shuttles as the warp threads change position. The control units receive feedback data of at least one of the parameters from the detecting mechanisms, such that operation of the control units incorporates the feedback data. Control systems control the control units to create a substantially constant level in the butting edge of the fabric irrespective of the positions of the shaft frames.

Claims18

Dependent claims

A weaving machine comprising:

tension rolls for guiding and adjusting a tension of warp thread in said weaving machine;
shaft frames for positioning the warp thread for weaving;
feed rollers for feeding out of said weaving machine a fabric produced by said weaving machine;
shuttles for inserting weft threads between warp threads;
a reed operating toward and away from a butting edge of the fabric situated in front of the feed rollers, said reed moving weft threads toward said butting edge;
detecting mechanisms for detecting parameters regarding said shaft frames, said parameters representing feedback data;
an individual control unit for each of said shaft frames, said control units adjusting said shaft frames in one or more positions to create open and closed sheds in the warp threads to enable the weft threads to be inserted by said shuttles as the warp threads change position, said control units receiving the feedback data of at least one of said parameters from said detecting mechanisms, such that operation of said control units incorporates said feedback data;
and
control systems for controlling said control units via linkage systems to create a substantially constant level in the butting edge of the fabric irrespective of the positions of the shaft frames.

6 more elements

Dependencies are inferred from the claim text.