EP0174039A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Speed control for weft feed spool in weaving looms
Assignee: Picanol NV
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Filing: 1985-07-22
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Granted: —
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Expires: 2005-07-22
Abstract
Abstract 57 A method to control the speed of the weft feed spool in weaving looms, characterized by the fact that it consists of feeding at least two items of detected data into a control mechanism, the use of these data by this latter to calculate, as a number of windings, the variation (R) of the reserve from the average reserve which itself is determined by the reserve sensor (B), and any appropriate adjustment which may be required of the speed of the feed spool.
Inventors
- 👤 Filip Deconinck
- 👤 Philippe Van Bogaert
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 12:47
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/34; D03D47/36; D03D47/361; D03D47/367; D03D47/362; D03D47/363; B; B65; B65H; B65H2557/00; B65H2557/30; B65H2557/33
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
A method to control the speed of the weft feed spool in weaving looms, characterized by the fact that it consists of feeding at least two items of detected data into a control mechanism, the use of these data by this latter to calculate, as a number of windings, the variation (ΛR) of the reserve from the average reserve which itself is determined by the reserve sensor (8), and any appropriate adjustment which may be required of the speed of the feed spool.
Claim 2
Independent Claim
83 words
A method to control the speed of the weft feed spool in weaving looms, characterized by the fact that it consists of feeding at least two items of detected data into a control mechanism, the use of these data by this latter to calculate, as a number of windings, the variation (ΛR) of the reserve from the average reserve which itself is determined by the reserve sensor (8), and any appropriate adjustment which may be required of the speed of the feed spool.
Claim 3
Dependent Claim
40 words
A method as specified in claim 1, characterized by the fact that when the reserve sensor (8) detects or fails to detect windings (7), the variation (ΛR) of the reserve, as a number of windings, is automatically set to zero.
Claim 4
Independent Claim
76 words
A method as specified in claims 1 or 2, characterized by the fact that the aforementioned data are selected from among : - the number of windings per weft thread ; - the maximum speed of the feed spool ; - pulse signals per rotation of the feed spool ; - start/stop status of the weaving loom ; - signal sent for the opening of the magnet when the signal is sent for the colour feed.
Claim 5
Dependent Claim
38 words
A method as specified in claim 4, characterized by the fact that the reserve sensor (8) is situated at an average desired axial length (R) corresponding with an average number of windings wound on in the stationary condition.
Claim 6
Independent Claim
29 words
A method as specified in any of the preceding claims, characterized by the fact that a maximum sensor (9) is used as protection against oversupply of the feed spool.
Claim 7
Independent Claim
56 words
A method as specified in any of the preceding claims, characterized by the fact that a winding sensor (10) is used which measures the time and the number of windings unspooled in the loom cycle, which also uses this sensor at the same time as a maximum sensor as protection against oversupply of the feed spool.
Claim 8
Independent Claim
57 words
A method as specified in any of claims 1 to 5, characterized by the fact that a winding sensor (10) is used which measures the time and the number of windings unspooled in the loom cycle, which also uses this sensor at the same time as a maximum sensor as protection against oversupply of the feed spool.
Claim 9
Independent Claim
47 words
A method as specified in any of the preceding claims, characterized by the fact that, based on the aforementioned detections and calculations, the braking force of the feed spool input brake is controlled as an inversely proportional function of the speed of revolution of the feed spool.
References Cited (Backward Citations)
No citation records indexed.
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