DE102013004450A1 - System and method for controlling a pneumatic feed of fibers - Google Patents
System and method for controlling a pneumatic feed of fibers Download PDFInfo
- Publication number
- DE102013004450A1 DE102013004450A1 DE102013004450.2A DE102013004450A DE102013004450A1 DE 102013004450 A1 DE102013004450 A1 DE 102013004450A1 DE 102013004450 A DE102013004450 A DE 102013004450A DE 102013004450 A1 DE102013004450 A1 DE 102013004450A1
- Authority
- DE
- Germany
- Prior art keywords
- feed
- fibers
- pressure
- fiber
- delivery fan
- 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- Withdrawn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
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G23/00—Feeding fibres to machines; Conveying fibres between machines
- D01G23/02—Hoppers; Delivery shoots
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Zur Beeinflussung der Fasereinspeisung in Ringleitungen zur Befüllung von Faserspeiseschächten wird ein Drucksensor im Saugteil vor dem Förderventilator genutzt.To influence the fiber feed in ring lines for filling fiber feed shafts, a pressure sensor is used in the suction part in front of the conveyor fan.
Description
Seit ca. 1960 sind zur Beschickung von z. B. Karden Speiseschächte gebräuchlich. Bei ersten bekannten Verfahren wurden die Fasern von einer Speisemaschine mittels eines Förderventilators abgezogen und in einer gemeinsamen Förderleitung zu den Speiseschächten geblasen. Die überflüssigen Fasern wurden zurück in die Speisemaschine geleitet. Eine Füllhöhenerkennung mittels Lichtschranken in der Speisemaschine der zurückgeleiteten Fasern beeinflusste die Zuspeisung von Frischfasern. Ein zweites System, das sich weltweit durchgesetzt hat, arbeitet ohne Rückführung von Fasern. Die Fasern werden von der Speisemaschine mittels eines Ventilators abgesaugt und in die Speiseleitung gedrückt. Die Speiseleitung endet am letzten Speiseschacht des Systems. An dem Speiseschacht tritt die Luft an Siebflächen aus. Sind die Siebflächen mit Fasern gefüllt, steigt der Druck im System. Dieser Druckanstieg wird gemessen und bei steigendem Druck die Faserzuführung reduziert oder gestoppt. Dieses System ist einfacher als ersteres, jedoch führt die geringere Luftgeschwindigkeit dazu, dass schwerere Fasern oder Faserklumpen sich am Anfang des Systems ablagern und leichte gut aufgelöste Fasern zum Systemende gelangen. Diese Entmischung ist unerwünscht. Die Erfindung betrifft ein Verfahren und eine Vorrichtung, um in einem System mit Faserrückführung die Fasereinspeisung besser und einfacher zu steuern.Since about 1960 are for feeding z. B. carding feeders in use. In the first known method, the fibers were withdrawn from a feed machine by means of a conveyor fan and blown in a common feed line to the feed ducts. The superfluous fibers were returned to the feed machine. A filling height detection by means of light barriers in the feeding machine of the returned fibers influenced the feeding of fresh fibers. A second system that has become established worldwide operates without recirculation of fibers. The fibers are sucked from the feed machine by means of a fan and pressed into the feed line. The feed line ends at the last feed slot of the system. At the feed chute, the air exits at Siebflächen. If the screen surfaces are filled with fibers, the pressure in the system increases. This pressure increase is measured and with increasing pressure the fiber supply is reduced or stopped. This system is simpler than the former, but the lower air velocity results in heavier fibers or lumps of fiber settling at the beginning of the system and light, well-dispersed fibers coming to the end of the system. This segregation is undesirable. The invention relates to a method and apparatus for better and easier control of fiber feed in a fiber return system.
Erfindungsgemäß wird der Unterdruck vor dem Faserförderventilator zur Steuerung der Fasermaterialeinspeisung genutzt. Zur Steuerung kann nicht nur der Unterdruck vor dem Förderventilator, sondern auch zusätzlich in bekannter Weise der Überdruck nach dem Ventilator vor den Speiseschächten genutzt werden. So kann einer der beiden Drücke als Grenzdruck zum sofortigen Stopp der Materialeinspeisung genutzt werden, und der andere, um die Fasereinspeisemenge pro Zeiteinheit zu steuern. Wird der Ringleitung Luft beim Abscheiden der Fasern in den Speiseschächten entzogen und an einer anderen Stelle vor der Materialeinspeisung wieder zugeführt, wird der Drucksensor vorzugsweise zwischen Lufteinspeisung und Fasereinspeisung platziert.According to the invention, the negative pressure in front of the fiber conveying fan is used to control the fiber material feed. To control not only the negative pressure in front of the conveyor fan, but also in a known manner, the pressure above the fan can be used in front of the feed ducts. Thus, one of the two pressures can be used as the limit pressure to immediately stop the material feed, and the other to control the fiber feed per unit time. If air is withdrawn from the ring conduit during the deposition of the fibers in the feed ducts and returned to another location before the material feed, the pressure sensor is preferably placed between the air feed and the fiber feed.
Auf diese Weise lässt sich sehr einfach und genau die Fasereinspeisung in Ringspeicherleitungen regeln.In this way, it is very easy and accurate to regulate the fiber feed in ring storage lines.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013004450.2A DE102013004450A1 (en) | 2013-03-15 | 2013-03-15 | System and method for controlling a pneumatic feed of fibers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013004450.2A DE102013004450A1 (en) | 2013-03-15 | 2013-03-15 | System and method for controlling a pneumatic feed of fibers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102013004450A1 true DE102013004450A1 (en) | 2014-09-18 |
Family
ID=51418425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102013004450.2A Withdrawn DE102013004450A1 (en) | 2013-03-15 | 2013-03-15 | System and method for controlling a pneumatic feed of fibers |
Country Status (1)
Country | Link |
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DE (1) | DE102013004450A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2413249A1 (en) * | 1974-03-20 | 1975-10-09 | Hergeth Kg Masch Apparate | Carding machine suction fibre supplying device - with suction drum between chute and feeder chute with suction used to control feed rate |
DE4038150A1 (en) * | 1990-02-22 | 1991-08-29 | Truetzschler & Co | DEVICE FOR PNEUMATICALLY FEEDING AT LEAST ONE FIBER PROCESSING MACHINE, e.g. CARD |
DE20102245U1 (en) * | 2001-02-09 | 2001-04-12 | Rieter Ag Maschf | Device for the pneumatic feeding of fiber flakes to the filling shafts of cards placed in a carding line |
DE10064655A1 (en) * | 2000-12-22 | 2002-07-04 | Truetzschler Gmbh & Co Kg | Device for regulating the amount of fiber flocks to be fed in at least one card |
-
2013
- 2013-03-15 DE DE102013004450.2A patent/DE102013004450A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2413249A1 (en) * | 1974-03-20 | 1975-10-09 | Hergeth Kg Masch Apparate | Carding machine suction fibre supplying device - with suction drum between chute and feeder chute with suction used to control feed rate |
DE4038150A1 (en) * | 1990-02-22 | 1991-08-29 | Truetzschler & Co | DEVICE FOR PNEUMATICALLY FEEDING AT LEAST ONE FIBER PROCESSING MACHINE, e.g. CARD |
DE10064655A1 (en) * | 2000-12-22 | 2002-07-04 | Truetzschler Gmbh & Co Kg | Device for regulating the amount of fiber flocks to be fed in at least one card |
DE20102245U1 (en) * | 2001-02-09 | 2001-04-12 | Rieter Ag Maschf | Device for the pneumatic feeding of fiber flakes to the filling shafts of cards placed in a carding line |
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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 |