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US 6,357,486 B2Granted
Method and device for detecting jacquard shed anomalies
AssigneeStaubli Faverges
InventorDominique Braun
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AssigneeStaubli Faverges
InventorDominique Braun
Estimating the term…
In a weaving loom of the Jacquard type comprising electrical actuators for displacing heddles controlling the position of the warp yarns, the following steps are carried out: a so-called “normal effort” is determined, exerted by at least one actuator on at least one harness cord in order to displace, between two positions of its normal stroke, at least one heddle connected to a normally taut warp yam; from this normal effort, at least one threshold value representative of a limit of a range of values of normal weaving effort is determined; while the loom is in operation, a so-called “operational effort” exerted by this actuator on the harness cord is determined; at least one value representative of this operational effort is compared with the threshold value, and a first, so-called “anomaly signal” is generated when the value representative of the operational effort is outside the afore-mentioned range. The device comprises a logic unit incorporating a comparator and associated with a memory and a display means.
Method for detecting an anomaly in the formation of a shed in a Jacquard-type weaving loom which includes electrical actuators for controlling movement of harness cords for displacing heddles controlling position of warp yarns of the loom, including the steps of:
Device for detecting an anomaly in the formation of a shed on a weaving loom of Jacquard type which includes electrical actuators for the displacement of heddles controlling positions of warp yarns of the loom, the device including:
Jacquard-type weaving loom including electrical actuators for displacing harness cords for moving heddles controlling positions of warp yarns, means for detecting an anormaly in the formation of a shed on the weaving loom, said means for detecting including:
Dependencies are inferred from the claim text.