EP0873800A2 - Blow-off device for strips - Google Patents

Blow-off device for strips Download PDF

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Publication number
EP0873800A2
EP0873800A2 EP98107343A EP98107343A EP0873800A2 EP 0873800 A2 EP0873800 A2 EP 0873800A2 EP 98107343 A EP98107343 A EP 98107343A EP 98107343 A EP98107343 A EP 98107343A EP 0873800 A2 EP0873800 A2 EP 0873800A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
blow
band
edge
pistons
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.)
Granted
Application number
EP98107343A
Other languages
German (de)
French (fr)
Other versions
EP0873800B1 (en
EP0873800A3 (en
Inventor
Klaus-Peter Dipl.-Ing. Eberwein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
SMS Demag AG
Schloemann Siemag AG
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Publication date
Application filed by SMS Schloemann Siemag AG, SMS Demag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0873800A2 publication Critical patent/EP0873800A2/en
Publication of EP0873800A3 publication Critical patent/EP0873800A3/en
Application granted granted Critical
Publication of EP0873800B1 publication Critical patent/EP0873800B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids
    • B21B45/0281—Cleaning devices removing liquids removing coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0272—Cleaning compositions

Definitions

  • the invention relates to a device for blowing off a roll stand leaking belt with a separate belt edge blow-off.
  • the invention is based, with a generic tape blowing device the task to improve the belt edge blow-off.
  • the band edge blowing and the tape blowing device are connected to one another in terms of control technology.
  • the invention is based on the idea of the valve control which is required anyway the middle and edge zones of an existing band blowing device use and automatically feed the compressed air to the belt edge area to blow, without any additional manual intervention or drive to adjust or have to see the bandwidth to be driven, so that the band edge blow-off starts automatically with the band blow-off.
  • One embodiment of the invention provides that the band edge blow-off Has nozzle bars with several nozzles, the nozzle bar inputs with each connected to the valve outlet of the valves of the existing band blow-off device are.
  • the nozzle bars are in the area of the edge zones of the band blowing device arranged.
  • the blow-off nozzles of the belt blow-off device are so controlled that only the nozzle that lies next to the last peripheral zone nozzle, i.e. is outside the existing blow-off area, is acted upon and so that the tape edge is blown off and dries.
  • nozzle bars in series have successive pistons, which have a common Acting agent is assigned.
  • This can be a centrally located spring be, which is supported against a cover of the nozzle bar and the pistons in the Initial or non-operational position in its closed, the air outlet holds in the blocking position.
  • the ones arranged in the nozzle bar, horizontal Pistons that can be moved against one another thus close in the pretensioned state or by the application of the nozzle exits; the number of nozzles Belt edge blowing depends on the number of edge zones or the Nozzles assigned to edge zones. With active belt edge blowing, only the Nozzle connection, which is next to the last activated peripheral zone nozzle, with compressed air acted upon.
  • the compressed air not only shifts the first piston, but also also all other pistons against the force of the loading agent. This will The passage to the first nozzle is clear via the piston ring surface and the compressed air of this Nozzle is blown against the belt edge while all other nozzles continue are locked.
  • a preferred embodiment of the invention provides that the pistons are the same Have diameters and with pins of different diameters are formed, in such a way that the diameter of the one outer Rise the piston to the other outer piston. Define the individual tenons thus determined stepped piston ring surfaces of different sizes. The one from the Edge zone of the normal band blower most distant pistons of the nozzle bar has the smallest pin diameter during which the edge zone at nearest piston of the nozzle bar has the largest diameter. This makes it possible to achieve that even on all if necessary Nozzle bar connections to the compressed air, but only one specific nozzle is released and blows on the belt edge; the others, however, do not stay required nozzle outlets closed.
  • the band blowing device 1 shows a circuit diagram of a band blow-off device 1, which is not shown here shown rolling mill is connected downstream, with which runs out of the stand Tape is dried.
  • the band blowing device 1 consists of a central zone 2 as well as two peripheral zones 3, 4. Zones 2, 3, 4 each point to the band blowing several nozzles 5.
  • a compressed air source 6 supplies the valves 7 to 13 Bandabblasvortechnisch 1. Via the valve 7, the nozzles 5 of the Center zone 2 and selectively the nozzles 5 of the edge zones 3, 4 via the valves 8 to 13 pressurized with compressed air.
  • Each exit (highlighted by a black Point) of valves 7 to 13 is additionally with nozzle inputs of two - only represented schematically as a black box - nozzle bars 14, 15 one Band edge blow-off 16 connected, one at each Band edge side is arranged.
  • FIG. 2a the nozzle bar 14 shown in FIG. 1 only as a black box is shown as Detail shown in more detail in longitudinal section.
  • the nozzle bar 14 is at the top with seven Nozzles 17 to 23 equipped, the nozzle bar inputs 24 to 30 are opposite.
  • Pistons 31 to 37 are located in series in the nozzle bar 14 arranged, which in the embodiment by a compression spring 38 against one Cover 39 are biased and the nozzles 17 in the inoperative position shown close to 23. All pistons 31 to 37 have the same piston diameter, while their pegs 40 to 46 - starting from the outer one, left in the figure Piston 37 - have increasing diameters.
  • FIG. 2b shows the nozzle bar 14 with an active band blow-off device 1 for one the smallest strip of metal strip to be rolled.
  • Compressed air flows, controlled via the valve 7 (see FIG. 1), through the nozzle bar inlet 24 and presses the outer right piston 31 over its annular surface 47 and at the same time all others Pistons 32 to 37 against the compression spring 38; For this actuating movement is in a central bore receiving the pistons 32 to 37 of the nozzle bar housing, a free displacement 48 is available. The passage to Nozzle 17 is released, and thus the compressed air can hit the belt edge be blown.
  • FIG. 2c shows the nozzle bar 14 in an operating position in which only the nozzle 21 blows onto the belt edge, although the nozzle bar inputs 24 to 28 of the nozzles 17 to 20 arranged on the right via the valves 7 to 11 with compressed air are acted upon.
  • the compressed air flows through the beam inputs 24 to 28 and presses the piston 35 over its annular surface 47 and also the pistons 36, 37 on the left of the nozzle 21 to be switched on nozzles 22, 23 against the spring 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Cleaning In General (AREA)

Abstract

A blowing system for strip cleaning and drying incorporates a separate unit with control valves for the edge zones of the strip. The system is characterised by the fact that the unit (16) for the edge zones and the main blowing unit (1) operate under unified control.

Description

Die Erfindung betrifft eine Vorrichtung zum Abblasen eines aus einem Walzgerüst auslaufenden Bandes mit einer separaten Bandkantenabblasung.The invention relates to a device for blowing off a roll stand leaking belt with a separate belt edge blow-off.

Bei der Produktion von Walzerzeugnissen, insbesondere Walzbändern, ist es erforderlich, das mit Kühlmittelflüssigkeit benetzte, aus einem Walzgerüst auslaufende Band mittels Druckluft zu trocknen. Im Stand der Technik ist es bekannt, zu diesem Zweck eine Bandabblasung einzusetzen, welche - abhängig von minimaler und maximaler Bandbreite - aus einer Düsen aufweisenden Mittenzone und mehreren einzelnen zuschaltbaren Randzonen besteht. Diese Randzonen-Bandabblasung reicht aber meist nicht aus, um die sich im Bereich der Bandkante durch den Walzspalt schleppende Kühlmittelflüssigkeit abzublasen. Aus diesem Grunde wird oftmals eine separate Bandkantenabblasung installiert, bei der die Abblasdüse manuell oder mechanisch verfahrbar in den Bereich der Bandkante gebracht wird, was einen entsprechend hohen Aufwand voraussetzt.It is in the production of rolled products, especially rolled strips required that the wetted with coolant liquid, emerging from a roll stand Dry the belt with compressed air. It is known in the prior art to do this Purpose of using a band blow-off, which - depending on minimal and maximum bandwidth - from a central zone with nozzles and several individual switchable marginal zones. This edge zone band blow-off is sufficient but mostly not enough to get around the strip edge through the roll gap to blow off trailing coolant liquid. For this reason, it often becomes separate belt edge blow-off installed, in which the blow-off nozzle manually or mechanically moved into the area of the belt edge, which is a requires correspondingly high effort.

Der Erfindung liegt die Aufgabe zugrunde, bei einer gattungsgemäßen Bandabblasvorrichtung die Bandkantenabblasung zu verbessern.The invention is based, with a generic tape blowing device the task to improve the belt edge blow-off.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Bandkantenabblasung und die Bandabblasvorrichtung steuerungstechnisch miteinander verbunden sind. Hierbei liegt der Erfindung der Gedanke zugrunde, die ohnehin benötigte Ventilsteuerung der Mitten- und Randzonen einer vorhandenen Bandabblasvorrichtung zu nutzen und automatisch die eingespeiste Druckluft auch auf den Bandkantenbereich zu blasen, und zwar ohne einen zusätzlichen manuellen Eingriff oder einen Antrieb zur Einstellung auf die zu fahrende Bandbreite vornehmen bzw. -sehen zu müssen, so daß die Bandkantenabblasung automatisch mit der Bandabblasung einsetzt.This object is achieved in that the band edge blowing and the tape blowing device are connected to one another in terms of control technology. Here, the invention is based on the idea of the valve control which is required anyway the middle and edge zones of an existing band blowing device use and automatically feed the compressed air to the belt edge area to blow, without any additional manual intervention or drive to adjust or have to see the bandwidth to be driven, so that the band edge blow-off starts automatically with the band blow-off.

Eine Ausgestaltung der Erfindung sieht dazu vor, daß die Bandkantenabblasung Düsenbalken mit mehreren Düsen aufweist, deren Düsenbalkeneingänge jeweils mit dem Ventilausgang der Ventile der vorhandenen Bandabblasvorrichtung verbunden sind. Die Düsenbalken sind im Bereich der Randzonen der Bandabblasvorrichtung angeordnet. Die Abblasdüsen der Bandabblasvorrichtung werden dabei so angesteuert, daß stets nur die Düse, die neben der letzten Randzonendüse liegt, d.h. sich außerhalb des vorhandenen Abblasbereiches befindet, beaufschlagt wird und damit gezielt die Bandkante abbläst und trocknet.One embodiment of the invention provides that the band edge blow-off Has nozzle bars with several nozzles, the nozzle bar inputs with each connected to the valve outlet of the valves of the existing band blow-off device are. The nozzle bars are in the area of the edge zones of the band blowing device arranged. The blow-off nozzles of the belt blow-off device are so controlled that only the nozzle that lies next to the last peripheral zone nozzle, i.e. is outside the existing blow-off area, is acted upon and so that the tape edge is blown off and dries.

Eine weitere Ausgestaltung der Erfindung sieht vor, daß die Düsenbalken in Reihe hintereinanderliegende Kolben aufweisen, denen ein gemeinsames Beaufschlagungsmittel zugeordnet ist. Dieses kann eine zentral angeordnete Feder sein, die sich gegen einen Deckel des Düsenbalkens abstützt und die Kolben in der Ausgangs- bzw. Außerbetriebslage in ihrer geschlossenen, den Luftaustritt sperrenden Position hält. Die in dem Düsenbalken angeordneten, horizontal gegeneinander verschiebbaren Kolben verschließen somit im vorgespannten Zustand bzw. durch die Beaufschlagung die Düsenausgänge; die Anzahl der Düsen der Bandkantenabblasung richtet sich hierbei nach der Zahl der Randzonen bzw. der den Randzonen zugeordneten Düsen. Bei aktiver Bandkantenabblasung wird stets nur der Düsenanschluß, der neben der letzten aktivierten Randzonendüse liegt, mit Druckluft beaufschlagt. Wenn beispielsweise ein Band mit minimaler Bandbreite gewalzt wird, öffnet die dem Walzband am nächsten liegende, erste Düse des Düsenbalkens. Hierzu verschiebt die anstehende Druckluft nicht nur den ersten Kolben, sondern auch alle anderen Kolben gegen die Kraft des Beaufschlagungsmittels. Dadurch wird über die Kolbenringfläche der Durchgang zur ersten Düse frei und die Druckluft dieser Düse wird gegen die Bandkante geblasen, während alle anderen Düsen weiterhin gesperrt sind. Another embodiment of the invention provides that the nozzle bars in series have successive pistons, which have a common Acting agent is assigned. This can be a centrally located spring be, which is supported against a cover of the nozzle bar and the pistons in the Initial or non-operational position in its closed, the air outlet holds in the blocking position. The ones arranged in the nozzle bar, horizontal Pistons that can be moved against one another thus close in the pretensioned state or by the application of the nozzle exits; the number of nozzles Belt edge blowing depends on the number of edge zones or the Nozzles assigned to edge zones. With active belt edge blowing, only the Nozzle connection, which is next to the last activated peripheral zone nozzle, with compressed air acted upon. For example, if a strip is rolled with minimal bandwidth, opens the first nozzle of the nozzle bar that is closest to the rolled strip. For this purpose, the compressed air not only shifts the first piston, but also also all other pistons against the force of the loading agent. This will The passage to the first nozzle is clear via the piston ring surface and the compressed air of this Nozzle is blown against the belt edge while all other nozzles continue are locked.

Eine bevorzugte Ausführung der Erfindung sieht vor, daß die Kolben einen gleichen Durchmesser aufweisen und mit Zapfen von unterschiedlichem Durchmesser ausgebildet sind, und zwar dergestalt, daß die Durchmesser von dem einen äußeren Kolben zum anderen äußeren Kolben ansteigen. Die einzelnen Zapfen definieren somit bestimmt gestufte, unterschiedlich große Kolbenringflächen. Der von der Randzone der normalen Bandabblasvorrichtung entfernteste Kolben des Düsenbalkens besitzt den geringsten Zapfendurchmesser, während der der Randzone am nächsten liegende Kolben des Düsenbalkens den größten Durchmesser aufweist. Dadurch läßt sich erreichen, daß selbst bei auf gegebenenfalls allen Düsenbalkenanschlüssen anstehender Druckluft, dennoch nur eine bestimmte Düse freigegeben wird und auf die Bandkante bläst; hingegen bleiben die anderen, nicht benötigten Düsenausgänge verschlossen. Dies wird dadurch erreicht, daß die Summe der Ringflächen der Kolben, ausgehend von dem Kolben mit dem größten Zapfendurchmesser, die Kolbenfläche des Kolbens mit dem geringsten Zapfendurchmesser nicht überschreitet. Damit wird sichergestellt, daß dann, wenn beispielsweise der Kolben mit dem geringsten Zapfendurchmesser zuerst mit Druckluft beaufschlagt wird, nur die ihm zugehörige Düse abbläst und die übrigen Düsen, obwohl an ihren zugehörigen Balkeneingängen Druckluft anliegt, verschlossen bleiben.A preferred embodiment of the invention provides that the pistons are the same Have diameters and with pins of different diameters are formed, in such a way that the diameter of the one outer Rise the piston to the other outer piston. Define the individual tenons thus determined stepped piston ring surfaces of different sizes. The one from the Edge zone of the normal band blower most distant pistons of the nozzle bar has the smallest pin diameter during which the edge zone at nearest piston of the nozzle bar has the largest diameter. This makes it possible to achieve that even on all if necessary Nozzle bar connections to the compressed air, but only one specific nozzle is released and blows on the belt edge; the others, however, do not stay required nozzle outlets closed. This is achieved in that the sum the ring surfaces of the pistons, starting from the piston with the largest Pin diameter, the piston area of the piston with the smallest Pin diameter does not exceed. This ensures that when for example, the piston with the smallest pin diameter comes first Compressed air is applied, only the nozzle belonging to it blows off and the rest Nozzles closed even though compressed air is present at their associated bar inlets stay.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung, in der ein Ausführungsbeispiel des Gegenstandes der Erfindung näher erläutert ist. Es zeigen:

Fig. 1
ein Schaltbild einer Bandabblasvorrichtung, die mit einer Bandkantenabblasung verbunden ist; und
Fig. 2a, 2b, 2c
einen Längsschnitt durch einen Düsenbalken, in verschiedenen Betriebsstellungen dargestellt.
Further features and advantages of the invention result from the claims and the following description, in which an embodiment of the subject matter of the invention is explained in more detail. Show it:
Fig. 1
a circuit diagram of a band blowing device, which is connected to a band edge blowing; and
2a, 2b, 2c
a longitudinal section through a nozzle bar, shown in different operating positions.

Die Fig. 1 zeigt ein Schaltbild einer Bandabblasvorrichtung 1, welche einem hier nicht dargestellten Walzgerüst nachgeschaltet ist, mit der das aus dem Gerüst auslaufende Band getrocknet wird. Die Bandabblasvorrichtung 1 besteht aus einer Mittenzone 2 sowie zwei Randzonen 3, 4. Die Zonen 2, 3, 4 weisen zur Bandabblasung jeweils mehrere Düsen 5 auf. Eine Druckluftquelle 6 versorgt über Ventile 7 bis 13 die Bandabblasvorrichtung 1. Über das Ventil 7 werden einheitlich die Düsen 5 der Mittenzone 2 und über die Ventile 8 bis 13 selektiv die Düsen 5 der Randzonen 3, 4 mit Druckluft beaufschlagt. Jeder Ausgang (hervorgehoben durch einen schwarzen Punkt) der Ventile 7 bis 13 ist zusätzlich mit Düseneingängen von zwei - nur schematisch als Black-Box dargestellen - Düsenbalken 14, 15 einer Bandkantenabblasung 16 verbunden, von denen jeweils einer an jeder Bandkantenseite angeordnet ist.1 shows a circuit diagram of a band blow-off device 1, which is not shown here shown rolling mill is connected downstream, with which runs out of the stand Tape is dried. The band blowing device 1 consists of a central zone 2 as well as two peripheral zones 3, 4. Zones 2, 3, 4 each point to the band blowing several nozzles 5. A compressed air source 6 supplies the valves 7 to 13 Bandabblasvorrichtung 1. Via the valve 7, the nozzles 5 of the Center zone 2 and selectively the nozzles 5 of the edge zones 3, 4 via the valves 8 to 13 pressurized with compressed air. Each exit (highlighted by a black Point) of valves 7 to 13 is additionally with nozzle inputs of two - only represented schematically as a black box - nozzle bars 14, 15 one Band edge blow-off 16 connected, one at each Band edge side is arranged.

Nachfolgend wird anhand der Fig. 2a, 2b und 2c die Betriebsweise eines der Düsenbalken 14, 15 näher erläutert.The mode of operation of one of the following is shown with reference to FIGS. 2a, 2b and 2c Nozzle bar 14, 15 explained in more detail.

In Fig. 2a wird der gemäß Fig. 1 nur als Black-Box dargestellte Düsenbalken 14 als Einzelheit im Längsschnitt konkreter gezeigt. Der Düsenbalken 14 ist oben mit sieben Düsen 17 bis 23 bestückt, denen Düsenbalkeneingänge 24 bis 30 gegenüberliegen. In dem Düsenbalken 14 sind in Reihe hintereinanderliegende Kolben 31 bis 37 angeordnet, welche im Ausführungsbeispiel durch eine Druckfeder 38 gegen einen Deckel 39 vorgespannt sind und in der gezeigten Außerbetriebsstellung die Düsen 17 bis 23 verschließen. Alle Kolben 31 bis 37 haben einen gleichen Kolbendurchmesser, während ihre Zapfen 40 bis 46 - ausgehend von dem äußeren, in der Figur linken Kolben 37 - steigende Durchmesser aufweisen.In FIG. 2a, the nozzle bar 14 shown in FIG. 1 only as a black box is shown as Detail shown in more detail in longitudinal section. The nozzle bar 14 is at the top with seven Nozzles 17 to 23 equipped, the nozzle bar inputs 24 to 30 are opposite. Pistons 31 to 37 are located in series in the nozzle bar 14 arranged, which in the embodiment by a compression spring 38 against one Cover 39 are biased and the nozzles 17 in the inoperative position shown close to 23. All pistons 31 to 37 have the same piston diameter, while their pegs 40 to 46 - starting from the outer one, left in the figure Piston 37 - have increasing diameters.

Die Fig. 2b zeigt den Düsenbalken 14 bei aktiver Bandabblasvorrichtung 1 für ein mit der kleinsten Bandbreite zu walzendes Metallband. Es strömt Druckluft, angesteuert über das Ventil 7 (vgl. Fig. 1), durch den Düsenbalkeneingang 24 und drückt den äußeren rechten Kolben 31 über seine Ringfläche 47 und gleichzeitig alle anderen Kolben 32 bis 37 gegen die sich an dem Deckel 39 abstützende Druckfeder 38; für diese Stellbewegung steht in einer die Kolben 32 bis 37 aufnehmenden Mittenbohrung des Düsenbalkengehäuses ein freier Hubraum 48 zur Verfügung. Der Durchgang zur Düse 17 wird freigegeben, und damit kann die Druckluft gegen die Bandkante geblasen werden.2b shows the nozzle bar 14 with an active band blow-off device 1 for one the smallest strip of metal strip to be rolled. Compressed air flows, controlled via the valve 7 (see FIG. 1), through the nozzle bar inlet 24 and presses the outer right piston 31 over its annular surface 47 and at the same time all others Pistons 32 to 37 against the compression spring 38; For this actuating movement is in a central bore receiving the pistons 32 to 37 of the nozzle bar housing, a free displacement 48 is available. The passage to Nozzle 17 is released, and thus the compressed air can hit the belt edge be blown.

Die Fig. 2c zeigt den Düsenbalken 14 in einer Betriebsstellung, bei der nur die Düse 21 auf die Bandkante bläst, obwohl auch die Düsenbalkeneingänge 24 bis 28 der rechts angeordneten Düsen 17 bis 20 über die Ventile 7 bis 11 mit Druckluft beaufschlagt sind. Die Druckluft strömt durch die Balkeneingänge 24 bis 28 und drückt den Kolben 35 über seine Ringfläche 47 sowie auch die Kolben 36, 37 der links von der zuzuschaltenden Düse 21 liegenden Düsen 22, 23 gegen die Feder 38. Da auf den Kolbenringflächen 47 der Kolben 31 bis 34 der rechts von der zu entsperrenden bzw. zuzuschaltenden Düse 21 liegenden Düsen 17 bis 20 der gleiche Druck ansteht, wodurch sich diese Kolben auch in Richtung Feder 38 bewegen wollen, wird schaltungstechnisch dafür gesorgt, daß der Düsenbalkeneingang 28 der zu aktivierenden Düse 21 zuerst mit Druckluft beaufschlagt wird. Es werden dann aufgrund der Stufung der Durchmesser der Zapfen 40 bis 46, wodurch sich bestimmte Verhältnisse der Kolbenringflächen einstellen, die Kolben 35 bis 37 gegen die Feder 38 und die Kolben 31 bis 34 in die entgegengesetzte Richtung gegen einen dortigen Anschlag 49 (Bohrungsende der Balkengehäuse-Mittenbohrung) gedrückt. Die durch den Düsenbalkeneingang 28 strömende Druckluft wirkt hierbei auch auf die volle Kolbenfläche 50 von Kolben 34. Der freie Querschnitt aus der Summe der Ringflächen 47 der Kolben 31 bis 34 übersteigt nicht das Flächenmaß der Kolbenfläche 50 von Kolben 34, was sicherstellt, daß die Düsen 17 bis 20 verschlossen bleiben und nur das Ventil 21 auf freien Durchgang, d.h. offen geschaltet ist.2c shows the nozzle bar 14 in an operating position in which only the nozzle 21 blows onto the belt edge, although the nozzle bar inputs 24 to 28 of the nozzles 17 to 20 arranged on the right via the valves 7 to 11 with compressed air are acted upon. The compressed air flows through the beam inputs 24 to 28 and presses the piston 35 over its annular surface 47 and also the pistons 36, 37 on the left of the nozzle 21 to be switched on nozzles 22, 23 against the spring 38. Da on the piston ring surfaces 47 of the pistons 31 to 34 to the right of the unlocking or switching nozzle 21 lying nozzles 17 to 20 the same Pressure is present, whereby these pistons also move in the direction of the spring 38 want, circuitry ensures that the nozzle bar inlet 28 of the to be activated nozzle 21 is first pressurized with compressed air. Then there will be due to the gradation of the diameter of the pin 40 to 46, which determined Adjust the ratios of the piston ring surfaces, the pistons 35 to 37 against the spring 38 and the pistons 31 to 34 in the opposite direction against one there Stop 49 (bore end of the beam housing center bore) pressed. By Compressed air flowing through the nozzle bar inlet 28 also acts on the full one Piston area 50 of piston 34. The free cross section from the sum of the Annular surfaces 47 of the pistons 31 to 34 do not exceed the area dimension of the Piston surface 50 of piston 34, which ensures that nozzles 17-20 remain closed and only valve 21 is free to pass, i.e. open is switched.

Somit läßt sich erreichen, daß allein stets die Düse der Düsenbalken 14, 15 mit Druck beaufschlagt wird, die neben der letzten mit Druckluft beaufschlagten Düse der Randzonen 3, 4 liegt. Dadurch wird gewährleistet, daß auch die Bandkante gezielt getrocknet wird.It can thus be achieved that the nozzle of the nozzle bars 14, 15 alone is always under pressure is acted upon, the next to the last compressed air nozzle of the Edge zones 3, 4 is located. This ensures that the strip edge is also targeted is dried.

Claims (4)

Vorrichtung zum Abblasen eines aus einem Walzgerüst auslaufenden Bandes, mit einer separaten, Ansteuerungsventile aufweisenden Bandkantenabblasung,
dadurch gekennzichnet,
daß die Bandkantenabblasung (16) und die Bandabblasvorrichtung (1) steuerungstechnisch miteinander verbunden sind.Device for blowing off a strip running out of a roll stand, with a separate strip edge blow-off having control valves,
characterized by
that the band edge blow-off (16) and the band blow-off device (1) are connected to one another in terms of control technology. Vorrichtung nach Anspruch 1,
dadurch gekennzichnet,
daß die Bandkantenabblasung (16) Düsenbalken (14, 15) mit mehreren Düsen (17 bis 23) aufweist, deren Düsenbalkeneingänge (24 bis 30) jeweils mit dem Ventilausgang der Ventile (7 bis 13) der vorhandenen Bandabblasvorrichtung (1) verbunden sind.Device according to claim 1,
characterized by
that the band edge blowing (16) nozzle bar (14, 15) with a plurality of nozzles (17 to 23), the nozzle bar inputs (24 to 30) are each connected to the valve outlet of the valves (7 to 13) of the existing band blowing device (1). Vorrichtung nach Anspruch 2,
dadurch gekennzichnet,
daß die Düsenbalken (14, 15) in Reihe hintereinanderliegende Kolben (31 bis 37) aufweisen, denen ein gemeinsames Beaufschlagungsmittel (38) zugeordnet ist.Device according to claim 2,
characterized by
that the nozzle bars (14, 15) have pistons (31 to 37) located one behind the other, to which a common action means (38) is assigned. Vorrichtung nach Anspruch 3,
dadurch gekennzichnet,
daß die Kolben (31 bis 37) einen gleichen Durchmesser aufweisen und mit Zapfen (40 bis 46) von unterschiedlichem Durchmesser ausgebildet sind, und zwar dergestalt, daß die Durchmesser von dem einen äußeren Kolben (37) zum anderen äußeren Kolben (31) ansteigen.Device according to claim 3,
characterized by
that the pistons (31 to 37) have the same diameter and are formed with pins (40 to 46) of different diameters in such a way that the diameters increase from one outer piston (37) to the other outer piston (31).
EP98107343A 1997-04-25 1998-04-22 Blow-off device for strips Expired - Lifetime EP0873800B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19717456 1997-04-25
DE19717456A DE19717456A1 (en) 1997-04-25 1997-04-25 Band blowing device

Publications (3)

Publication Number Publication Date
EP0873800A2 true EP0873800A2 (en) 1998-10-28
EP0873800A3 EP0873800A3 (en) 2000-07-19
EP0873800B1 EP0873800B1 (en) 2002-10-23

Family

ID=7827704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98107343A Expired - Lifetime EP0873800B1 (en) 1997-04-25 1998-04-22 Blow-off device for strips

Country Status (8)

Country Link
US (1) US6021544A (en)
EP (1) EP0873800B1 (en)
JP (1) JPH10314828A (en)
KR (1) KR19980081607A (en)
CN (1) CN1125692C (en)
AT (1) ATE226488T1 (en)
DE (2) DE19717456A1 (en)
TW (1) TW376337B (en)

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EP2726226A4 (en) * 2011-06-28 2015-06-03 Silvent Ab Device for cleaning a material or structure, e.g. a steel material
WO2019134782A1 (en) 2018-01-03 2019-07-11 Sms Group Gmbh Band edge blow-off

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10115993B4 (en) * 2001-03-30 2010-04-01 Sms Siemag Aktiengesellschaft Method for preventing the passage of liquids through the nip during the rolling of strips in strip rolling stands and apparatus for carrying out the method
DE102014222530A1 (en) * 2014-05-05 2015-11-05 Sms Group Gmbh Band deflector and roller assembly
DE102015209399A1 (en) * 2014-11-04 2016-05-04 Sms Group Gmbh Device for removing exhaust air from the surroundings of a metal strip

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GB2111885A (en) * 1981-12-24 1983-07-13 Wean United Inc Removing liquid from strip in a rolling mill
US5440779A (en) * 1991-11-01 1995-08-15 Davy Mckee (Poole) Limited Moisture removal from metal strip
US5398372A (en) * 1993-10-29 1995-03-21 Kaiser Aluminum & Chemical Corporation Liquid edge bead removal device
JPH07314028A (en) * 1994-05-25 1995-12-05 Nippon Steel Corp Method and device for cooling steel

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Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04, 30. April 1996 (1996-04-30) -& JP 07 314028 A (NIPPON STEEL CORP), 5. Dezember 1995 (1995-12-05) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2726226A4 (en) * 2011-06-28 2015-06-03 Silvent Ab Device for cleaning a material or structure, e.g. a steel material
US10245622B2 (en) 2011-06-28 2019-04-02 Silvent Ab Device for cleaning a material or structure, E.G. A steel material
WO2019134782A1 (en) 2018-01-03 2019-07-11 Sms Group Gmbh Band edge blow-off

Also Published As

Publication number Publication date
DE19717456A1 (en) 1998-10-29
JPH10314828A (en) 1998-12-02
DE59806010D1 (en) 2002-11-28
ATE226488T1 (en) 2002-11-15
KR19980081607A (en) 1998-11-25
US6021544A (en) 2000-02-08
TW376337B (en) 1999-12-11
EP0873800B1 (en) 2002-10-23
CN1197698A (en) 1998-11-04
EP0873800A3 (en) 2000-07-19
CN1125692C (en) 2003-10-29

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