DE102021000219A1 - Process window for web-forming machines - Google Patents
Process window for web-forming machines Download PDFInfo
- Publication number
- DE102021000219A1 DE102021000219A1 DE102021000219.9A DE102021000219A DE102021000219A1 DE 102021000219 A1 DE102021000219 A1 DE 102021000219A1 DE 102021000219 A DE102021000219 A DE 102021000219A DE 102021000219 A1 DE102021000219 A1 DE 102021000219A1
- Authority
- DE
- Germany
- Prior art keywords
- speed
- guide
- machine
- web
- values
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 15
- 238000012384 transportation and delivery Methods 0.000 claims description 8
- 238000009960 carding Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 241001417494 Sciaenidae Species 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 8
- 230000006399 behavior Effects 0.000 description 3
- 238000000280 densification Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 210000002969 egg yolk Anatomy 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
- D01G15/12—Details
- D01G15/36—Driving or speed control arrangements
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Bei einer vliesbildenden Maschine werden entsprechend einer Luftgeschwindigkeit verschiedene Parameter bei verschiedenen Geschwindigkeiten automatisch eingestellt.In a web-forming machine, different parameters are automatically adjusted at different speeds according to an air speed.
Description
Krempeln und Karden gehören zu den ältesten Maschinen. Da sich das Verhalten von Fasern und Luft und der Kardierprozess einer umfassenden mathematischen Berechnung entziehen, ist der Fortschritt sehr langsam. Bei den Grundprinzipien hat sich seit Jahrhunderten nichts geändert. Selbst der Wechsel zu drehzahlveränderlichen Antrieben hat dies nicht geändert. Es wird z. B.die Einzugsgeschwindigkeit mit einem Faktor versehen, um der Erhöhung der Liefergeschwindigkeit zu folgen. Lineare Beziehungen zur Abliefergeschwindigkeit oder bei Vliesstofferzeugung zur Liniengeschwindigkeit sind Stand der Technik.Carding and carding are among the oldest machines. Because fiber and air behavior and the carding process elude comprehensive mathematical calculation, progress is very slow. The basic principles have not changed for centuries. Even switching to variable speed drives hasn't changed that. It will e.g. B.Factor the infeed speed to follow the increase in delivery speed. Linear relationships to the delivery speed or, in the case of nonwoven fabric production, to the line speed are state of the art.
Dies wird aber dem textiltechnischen Prozess nicht gerecht. Es gibt viele Verhaltensweisen von Fasern, die nicht linear verlaufen, oder erst ab einer gewissen Geschwindigkeit auftreten, oder vergehen. Bei Faserverdichtungen treten ab bestimmten Frequenzen sprunghaft stärkere Verdichtungen auf. Bei Vliesablieferungen muss bei hohen Geschwindigkeiten mit einem prozentual höheren Verzug gearbeitet werden.However, this does not do justice to the technical textile process. There are many behaviors of fibers that are not linear, or only appear above a certain speed, or disappear. In the case of fiber densification, there are sudden increases in densification above certain frequencies. In the case of non-woven deliveries, work must be carried out at high speeds with a higher percentage of draft.
Manche Prozesse müssen auch im Verhältnis verlangsamt werden, damit die Fasern sich nicht von der Garnitur ablösen. Einige Einstellungen, die bei einem geringen Faserdurchsatz richtig sind, stören den Faserfluss bei hohen Geschwindigkeiten. Einige wenige Einstellungen, z. B. Ablieferungsverzug, werden von erfahrenen Bedienern laufend korrigiert. Dies geschieht aber verständlicherweise in großen Prozessschritten. Eine optimale Einstellung für alle Prozessfenster in kleinen Abschnitten kann so nicht erreicht werden.Some processes also have to be slowed down in proportion so that the fibers do not detach from the clothing. Some settings that are correct at low fiber throughput will disrupt fiber flow at high speeds. A few settings, e.g. B. delay in delivery, are continuously corrected by experienced operators. Understandably, however, this happens in large process steps. An optimal setting for all process windows in small sections cannot be achieved in this way.
Aufgabe der Erfindung ist es, dass die Maschine für alleThe object of the invention is that the machine for everyone
Produktionsgeschwindigkeiten automatisch die optimalen Verarbeitungswerte abruft, die vorher ermittelt wurden. Wichtig ist, dass mehrere Prozessfenster bestehen, so dass die Prozesse in feinen aneinander liegenden Prozessfenstern stattfinden können. Neben Geschwindigkeiten von Elementen der Maschinen können auch Absaugdrücke oder Abstände von Kardierelementen und Leitblechen variiert werden.production speeds automatically retrieves the optimal processing values that have been determined beforehand. It is important that there are several process windows so that the processes can take place in fine adjacent process windows. In addition to the speeds of machine elements, suction pressures or distances between carding elements and guide plates can also be varied.
Es ist bekannt, sogenannte Rezepturen im Prozesscomputer abzuspeichern. Hierbei werden für einzelne Produkte Einstellwerte abgespeichert und bei Produktion dieses Produktes abgerufen, z. B. Grundgeschwindigkeit und Einstellungen. Diese Werte sind aber fix und werden nicht automatisch bei verschiedenen Geschwindigkeiten verändert, z. B. Faktor für Liniengeschwindigkeit zum Einzug, Verzug zum Ablieferungsband, Faktor Geschwindigkeit des Tambours und der Kardierelemente zur Liniengeschwindigkeit, Faktor Dotter zur Liniengeschwindigkeit.It is known to store so-called recipes in the process computer. Setting values are saved for individual products and called up when this product is produced, e.g. B. Base speed and settings. However, these values are fixed and are not changed automatically at different speeds, e.g. B. Factor for line speed for the infeed, delay for the delivery belt, factor for the speed of the cylinder and the carding elements for the line speed, factor for the yolk in relation to the line speed.
Diese konventionelle Vorgehensweise kann die typischen nicht linearen oder einer nicht linearen Funktion folgenden Verhaltensweisen von Fasern nicht prozessoptimal gestalten.This conventional approach cannot optimally design the typical non-linear behavior of fibers or those that follow a non-linear function.
Erfindungsgemäß wird dies gelöst, indem man die bestimmende Geschwindigkeit, meist die Liniengeschwindigkeit, oder die Abzugsgeschwindigkeit, oder die Geschwindigkeit des Haupttambours als bestimmende Größe nimmt und dann für eine Faserart oder ein bestimmtes Produkt den Geschwindigkeitsbereich in mehrere Teilbereiche unterbricht, z. B. 0 -10 m/min; 10 - 40 m/min; 40 - 100 m/min; usw. Die Bereiche müssen nicht einen gleich großen Geschwindigkeitsbereich umfassen. Die Bereiche können sich auch überschneiden.According to the invention, this is achieved by taking the determining speed, usually the line speed, or the take-off speed, or the speed of the main drum as the determining variable and then interrupting the speed range into several sub-ranges for a fiber type or a specific product, e.g. B. 0-10m/min; 10 - 40m/min; 40 - 100m/min; etc. The ranges do not have to cover an equally large speed range. The areas can also overlap.
Für jeden dieser Bereiche werden nun eine Vielzahl von Einstellwerten ermittelt, z.B.
- - Faktoren eines PID Reglers
- - Drehzahl eines Ventilators
- - Unterdruck an einer Saugfläche
- - Verzug Ablieferungswalze zum Sieb oder Sammelband
- - Drehzahlen von garnierten Walzen
- - Faktor für den Einzug zur Liniengeschwindigkeit
- - Faktor für die Ablieferungswalze zur Liniengeschwindigkeit
- - Stellung von Leitblechen
- - Stellung von Chute Feed Elementen
- - Factors of a PID controller
- - Speed of a fan
- - Negative pressure on a suction surface
- - Delay of the delivery roller to the sieve or collecting belt
- - Speeds of garnished rollers
- - Factor for indentation to line speed
- - Factor for delivery roller to line speed
- - Position of guide plates
- - Provision of chute feed elements
Fährt die Anlage hoch oder wird aus einem anderen Grunde nicht mit der Höchstgeschwindigkeit für das Produktbetrieben, wechseln die Werte je nach aktuellem Prozessfenster automatisch. So kann auch im Hochlauf und Runterfahren die Maschine immer optimal arbeiten, und Ausschluss vermieden werden.If the system starts up or is not operated at the maximum speed for the product for another reason, the values change automatically depending on the current process window. In this way, the machine can always work optimally even when ramping up and shutting down, and exclusions can be avoided.
Claims (4)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021000219.9A DE102021000219A1 (en) | 2021-01-19 | 2021-01-19 | Process window for web-forming machines |
| FR2200433A FR3118968A1 (en) | 2021-01-19 | 2022-01-19 | Process window in machines forming nonwovens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021000219.9A DE102021000219A1 (en) | 2021-01-19 | 2021-01-19 | Process window for web-forming machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102021000219A1 true DE102021000219A1 (en) | 2022-07-21 |
Family
ID=82217953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102021000219.9A Withdrawn DE102021000219A1 (en) | 2021-01-19 | 2021-01-19 | Process window for web-forming machines |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102021000219A1 (en) |
| FR (1) | FR3118968A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3218114A1 (en) | 1981-05-20 | 1982-12-09 | Trützschler GmbH & Co KG, 4050 Mönchengladbach | Electronic machine control |
| DE4340643A1 (en) | 1993-11-29 | 1995-06-01 | Wirkbau Textilmasch Gmbh | Synchronous motor drives for multisystem card |
| DE19738053A1 (en) | 1997-09-01 | 1999-03-04 | Rieter Ag Maschf | Card with levelling drafting system at output |
| DE10307603A1 (en) | 2003-02-22 | 2004-09-02 | Rieter Ingolstadt Spinnereimaschinenbau Ag | textile machine |
| DE102006029639A1 (en) | 2006-06-28 | 2008-01-03 | Rieter Ingolstadt Spinnereimaschinenbau Ag | Method for controlling the draft of a drafting system of a textile machine and textile machine |
-
2021
- 2021-01-19 DE DE102021000219.9A patent/DE102021000219A1/en not_active Withdrawn
-
2022
- 2022-01-19 FR FR2200433A patent/FR3118968A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3218114A1 (en) | 1981-05-20 | 1982-12-09 | Trützschler GmbH & Co KG, 4050 Mönchengladbach | Electronic machine control |
| DE4340643A1 (en) | 1993-11-29 | 1995-06-01 | Wirkbau Textilmasch Gmbh | Synchronous motor drives for multisystem card |
| DE19738053A1 (en) | 1997-09-01 | 1999-03-04 | Rieter Ag Maschf | Card with levelling drafting system at output |
| DE10307603A1 (en) | 2003-02-22 | 2004-09-02 | Rieter Ingolstadt Spinnereimaschinenbau Ag | textile machine |
| DE102006029639A1 (en) | 2006-06-28 | 2008-01-03 | Rieter Ingolstadt Spinnereimaschinenbau Ag | Method for controlling the draft of a drafting system of a textile machine and textile machine |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3118968A1 (en) | 2022-07-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R163 | Identified publications notified | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |