EP0473932B1 - Device for the comminution of inner chips of longitudinally welded pipes - Google Patents

Device for the comminution of inner chips of longitudinally welded pipes Download PDF

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Publication number
EP0473932B1
EP0473932B1 EP91112573A EP91112573A EP0473932B1 EP 0473932 B1 EP0473932 B1 EP 0473932B1 EP 91112573 A EP91112573 A EP 91112573A EP 91112573 A EP91112573 A EP 91112573A EP 0473932 B1 EP0473932 B1 EP 0473932B1
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EP
European Patent Office
Prior art keywords
chip
cutting
pipe
chips
axis
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EP91112573A
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German (de)
French (fr)
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EP0473932A3 (en
EP0473932A2 (en
Inventor
Karl-Heinz Becker
Rolf Dipl.-Ing. Krebs
Erich Dipl.-Ing. Gerling
Manfred Dipl.-Ing. Gerber
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Fried Krupp AG Hoesch Krupp
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Mhp Mannesmann Hoesch Prazisrohr GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0807—Tube treating or manipulating combined with, or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off
    • B21C37/0811—Tube treating or manipulating combined with, or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off removing or treating the weld bead

Definitions

  • the invention relates to a device for comminuting the inner chip produced during the internal deburring of longitudinally welded pipes, according to the preamble of claim 1.
  • the inner chip created by the internal deburring remains in the tube as a continuous long chip.
  • This long span is usually caused by printing media, e.g. B. water, emulsion or air, or removed by long brushes, is then twisted at best after exiting the pipe end on shelves or in buckets and caught in balls and must then be done manually or with Magnetic / hook cranes are disposed of and subsequently cut or pressed in order to be used again as scrap in the blast furnace.
  • printing media e.g. B. water, emulsion or air
  • Magnetic / hook cranes are disposed of and subsequently cut or pressed in order to be used again as scrap in the blast furnace.
  • notch rollers used for this purpose can, however, damage the inner surface of the pipe or also deep notches, which lead to the minimum wall thickness in the seam area being undercut and provoking stress peaks and notch effects in the event of later internal pressure loads.
  • DE 32 19 369-A1 discloses a method and a device for achieving short chips.
  • the chip produced during scraping exerts a transverse force which causes a tool holder to rotate on the cutting means arranged obliquely on this tool holder.
  • the cutting means which are arranged side by side, are used one after the other and thus produce short individual chips.
  • the invention was therefore based on the object of creating a device which can be used for all diameter ranges and which economically enables automatic comminution of the long inner chip into chip scrap which can be used directly in the melt, which makes the uncontrolled rinsing or brushing with the resulting hazardous work activities unnecessary and inherently unnecessary can be easily integrated into existing production facilities.
  • the device essentially contains a pressurized water rinsing device at the beginning of the pipe and at the end of the pipe a movable chip-catching device, a chip-guiding device, a chip-cutting device and a chip-collecting device, which are arranged directly at the pipe end and next to one another.
  • the rinsed-out long chip can no longer emerge from the pipe end in an uncontrolled manner, and is caused by the chip guide device without significant kinking or Ball formation is fed directly to a cutting process and collected as cut scrap in a collecting device.
  • the disposal of the scrap metal is thus limited to simply replacing a collecting container.
  • This arrangement also allows the device to be used for any pipe diameter, since all tools and devices for comminution are located outside the pipe.
  • the devices which are connected to one another and thus form a closed system make it possible to transport the inner chip from the pipe by means of water pressure through the chip guide device and also through the chip cutting device into the chip scrap collecting device and to dispense with any intermediate handling.
  • the chip guiding device is designed as a hollow body connecting the chip catching device and the chip cutting device, so that there is a sleeve corresponding approximately to the inner cross section of the tube, which avoids unwanted buckling of the rinsed inner chip.
  • Emulsion or air can equally be used as the pressure or flushing medium.
  • the design of the hollow body by means of telescopic tubes enables the guide device to be lengthened or shortened easily and to be adjusted to different tube lengths.
  • the smallest diameter telescopic tube is advantageously connected to the chip catcher and the largest diameter to the chip cutting device, so that the chip cannot bump at the transition points from one telescope tube to the other during the flushing.
  • the design of the chip catcher as a funnel opening towards the pipe end allows the connection of the same to pipe ends of different diameters, so that a larger range of dimensions of pipes can be fixed in the device without modification and subjected to the internal chip comminution process.
  • the conveying speed of the chip and the cutting frequency can be easily determined so that any desired chip scrap length can be achieved.
  • the cutting device in the embodiment of claim 4 brings about an advantageous guidance and position of the chip during the cutting process without special clamping tools and is extremely robust and resistant to interference.
  • the cutting gap can easily be changed here by a threaded spindle acting on the cutting ring, the distance between the plane of the rotating knives and the plane of the cutting ring edge then changing.
  • the knives are, of course, professionally designed as turning and changing tools, so that long tool life and easy tool changes are guaranteed.
  • the device can advantageously be integrated into the production process within or directly next to an automatic pipe production system, so that the emerging finished pipe is deburred and the inner chip is already shredded ready for transport.
  • a particularly simple solution for a chip collection device is to provide a bucket which is open but otherwise closed to the chip cutting device and which encloses a scrap container which can be exchanged for an empty container and disposed of easily and within a very short time after filling.
  • a chip guide device 8 consisting of telescopic pipes 7a-7f connects on the outlet side in the main axis and is firmly connected to the chip catcher via flange couplings.
  • the telescopic tubes 7a-7f are thus pulled apart depending on the position of the chip catcher 1 within the adjustment length 5.
  • the chip cutting device 10 On the outlet side, there follows the chip cutting device 10 with its speed-adjustable drive 11, the cutting ring 12 and the rotating cutter head 13, and the chip scrap collecting device 14, which is designed as a bucket and which is provided with a lid 15 which can be opened to remove a scrap container (not shown).
  • the chip scrap collecting device 14 is shown broken away for better illustration of the cutter head 13 in the region of its opening 16 facing the chip cutting device 10.
  • the inlet-side beginning of the device according to the invention has a pressurized water flushing device 17, which contains a pressurized water quantity control device, not shown here. This is done with a water pressure of around 30 bar.
  • the pressurized water rinsing device 17 is arranged on a holder 18 so that it can be moved longitudinally over a short distance, so that after roughly pre-setting the housing 2 at the other end of the device - switched in the opposite direction to the travel function of the chip collection device 14 - the insertion and ejection of the pipes is problem-free he follows.
  • the bracket 18 is supported on a base frame 19, the bracket and base frame being formed in their storage area as oppositely inclined inclined planes. This is achieved by moving the bracket 18 on the Base frame 19 a height adjustment of the pressurized water flushing device 17 adapted to the respective pipe diameter.
  • FIG. 2 shows the end region of the device according to the invention in the operating state with an inserted and fixed tube 20 with an outside diameter of 114.3 mm and a wall thickness of 3.6 mm.
  • the chip-catching device 1 is moved according to the pipe length and encloses the pipe end 6 with its funnel.
  • the telescopic pipes 7a-7f are extended in accordance with this travel path.
  • FIG. 3 illustrates the operation of the chip cutting device 10 on the basis of a section.
  • the chip expelled by the pressurized water jet emerges from the cutting ring 12 and is cut by the rotating cutter head 13.
  • the cutting cross-section described by the rotating knives 21a-21d here completely covers the cross-section of the cutting ring 13.
  • the cutting ring 13 is rotatable here, so that after sufficient wear of the lower part of the cutting ring, which is essentially stressed during the cutting, its rotation causes a further, not worn cutting ring section can be rotated into the cutting position.
  • the knives are designed as rectangular plates with four cutting edges and can be turned after a cutting edge has worn out.
  • the cut chip scrap falls after the cut into a scrap container, not shown, on the bottom of the chip scrap collecting device 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Disintegrating Or Milling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Sawing (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

Device for comminuting the inner chips formed in the internal deburring of longitudinally welded pipes, in front of which an individual tube still containing the scraped-off inner chips can be positioned after being separated from the continuously produced pipeline, the device having a pressurised-water flushing device at the start of the pipe and a chip intercepting device which can be moved up against the end of the pipe, a chip guiding device, a chip cutting device and a chip scrap collecting device and in this way expels, guides and converts the inner chips to chip scrap in a closed system. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Zerkleinerung des bei der Innenentgratung längsnahtgeschweißter Rohre entstehenden Innenspans, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for comminuting the inner chip produced during the internal deburring of longitudinally welded pipes, according to the preamble of claim 1.

Bei der Herstellung von längsnahtgeschweißten Rohren, insbesondere bei Stahlrohren, welche mittels z. B. eines Formrollen- oder -käfigsystems vom Band zu einem Schlitzrohr geformt und darauffolgend verschweißt werden, entsteht durch den im Schweißpunkt vorhandenen Druck auf die Bandkanten ein Innen- und ein Außenwulst von ausgestauchtem schmelzflüssigen Material.
Dieses Material wird regelmäßig hinter dem Schweißpunkt auf der Innen- und der Außenseite durch Entgratwerkzeuge abgeschabt. Der hierbei durch die Außenentgratung entstehende Außenspan ist relativ leicht zu handhaben und kann aufgrund seiner Zugänglichkeit und des zur Verfügung stehenden unbegrenzten Arbeitsraumes in Schrottkübel geleitet und abgeführt oder auch über z. B. Führungsrinnen einer Zerhackerstation zugeleitet werden.In the production of longitudinally welded pipes, especially steel pipes, which are made by means of e.g. B. a form roller or cage system from the tape to a slotted tube and then welded, an internal and an external bead of swollen molten material arises from the pressure in the welding point on the tape edges.
This material is regularly scraped off behind the welding point on the inside and outside by deburring tools. The resulting external chip removal from the external deburring is relatively easy to handle and, due to its accessibility and the available unlimited working space, it can be conducted and discharged into scrap buckets or via z. B. guide troughs to a chopper station.

Der durch die Innenentgratung entstehende Innenspan verbleibt jedoch als durchgehender langer Span im Rohr.However, the inner chip created by the internal deburring remains in the tube as a continuous long chip.

Dieser lange Span wird üblicherweise durch Druckmedien, z. B. Wasser, Emulsion oder Luft, oder durch lange Bürsten entfernt, wird dann günstigstenfalls nach Austreten aus dem Rohrende auf Ablagen oder in Kübeln beliebig verdrillt und in Knäueln aufgefangen und muß dann manuell oder mit Magnet-/Hakenkränen entsorgt und nachfolgend geschnitten oder gepreßt werden, um als Schrotteinsatz im Hochofen wieder Einsatz zu finden.This long span is usually caused by printing media, e.g. B. water, emulsion or air, or removed by long brushes, is then twisted at best after exiting the pipe end on shelves or in buckets and caught in balls and must then be done manually or with Magnetic / hook cranes are disposed of and subsequently cut or pressed in order to be used again as scrap in the blast furnace.

Abgesehen von den Gefahren, die für das Bedienungspersonal entstehen, wenn der Span nur teilweise austritt und das Rohr im taktenden Fertigungsbetrieb einen üblicherweise nötigen Quertransport erfährt, ist die Entsorgung der auf den Ablagen und in den Kübeln verknäuelten Langspäne als umständliche, gefährliche und zeitaufwendige Tätigkeit nur mit äußerster Vorsicht und unter Einsatz umfassender Körperschutzmittel zu bewerkstelligen. Die nachfolgenden Preß- und Schneidvorgänge beinhalten ähnliche Probleme und sind zudem kostenintensiv.Apart from the dangers that arise for the operating personnel if the chip only partially escapes and the pipe in the cyclical manufacturing operation experiences a cross transport that is usually necessary, the disposal of the long chips tangled on the trays and in the buckets is only a cumbersome, dangerous and time-consuming activity to be done with extreme caution and using extensive body protection equipment. The subsequent pressing and cutting operations involve similar problems and are also costly.

Zur Vermeidung dieser Nachteile wurde bereits vorgeschlagen, den Innenspan vor der Innenentgratung zur Erzeugung von kürzeren oder leicht brechenden Spänen einzukerben. Durch die dazu eingesetzten Kerbrollen können jedoch Beschädigungen der Rohrinnenoberfläche entstehen oder auch Tiefkerbungen, die zur Unterschreitung der Mindestwanddicke im Nahtbereich führen und Spannungsspitzen und Kerbwirkungen bei späteren Innendruckbelastungen provozieren.In order to avoid these disadvantages, it has already been proposed to notch the inner chip before the internal deburring to produce shorter or easily breaking chips. The notch rollers used for this purpose can, however, damage the inner surface of the pipe or also deep notches, which lead to the minimum wall thickness in the seam area being undercut and provoking stress peaks and notch effects in the event of later internal pressure loads.

Weiterhin ist durch DE 32 19 369-A1 ein Verfahren und eine Vorrichtung zur Erzielung kurzer Späne offenbart. Hierbei übt der beim Abschaben entstehende Span eine Drehkraft eines Werkzeugträgers bewirkende Querkraft auf die an diesen Werkzeugträger schräg angeordneten Schneidmittel aus. Die nebeneinander überdeckend angeordneten Schneidmittel kommen nacheinander zum Einsatz und erzeugen so kurze Einzelspäne.Furthermore, DE 32 19 369-A1 discloses a method and a device for achieving short chips. In this case, the chip produced during scraping exerts a transverse force which causes a tool holder to rotate on the cutting means arranged obliquely on this tool holder. The cutting means, which are arranged side by side, are used one after the other and thus produce short individual chips.

Da jedoch bekanntermaßen die Belastungsspitzen gerade für Warmarbeitsstähle bei der genannten Innenentgratung beim Einlaufen bzw. Auslaufen des Schneidmittels in das/aus dem Werkstück - hier der Innenstauchwulst - entstehen, ergibt sich bei dem durch die oben genannte Schrift offenbarten Verfahren aufgrund des ständigen Schneidmittelwechsels eine nachteilige Minderung der Schneiden-Standzeit. Beide genannten offenbarten Vorrichtungen zeigen aber als gravierenden Nachteil, daß sie aufgrund der konstruktiv nötigen Baugröße der Kerbrollen oder auch des drehbaren Werkzeugträgers nur in Rohren eingsetzt werden können, die einen Innendurchmesser von ca. 160 mm nicht unterschreiten. Bei der Fertigung von Präzisrohren im Durchmesserbereich von z. B. 20 mm - 160 mm sind diese Vorrichtungen daher nicht nutzbar.However, since, as is known, the stress peaks arise especially for hot-work steels in the case of the above-mentioned internal deburring when the cutting agent enters or leaves the workpiece, in this case the inside bulge, results in the one disclosed by the abovementioned document Due to the constant changing of cutting tools, this disadvantageously reduces the tool life. However, both of the disclosed devices mentioned have a serious disadvantage that, owing to the structurally required structural size of the notch rollers or also of the rotatable tool carrier, they can only be used in pipes which do not fall below an inside diameter of approximately 160 mm. In the manufacture of precision tubes in the diameter range of z. B. 20 mm - 160 mm, these devices are therefore not usable.

Der Erfindung lag also die Aufgabe zugrunde, eine für alle Durchmesserbereiche anwendbare Vorrichtung zu schaffen, die in wirtschaftlicher Weise eine automatische Zerkleinerung des langen Innenspans zu direkt schmelzeinsatzfähigen Spanschrott ermöglicht, die das unkontrollierte Ausspülen oder Ausbürsten mit den dadurch entstehenden gefährdungsträchtigen Arbeitstätigkeiten entbehrlich macht und sich in einfacher Weise in bestehende Fertigungseinrichtungen integrieren läßt.The invention was therefore based on the object of creating a device which can be used for all diameter ranges and which economically enables automatic comminution of the long inner chip into chip scrap which can be used directly in the melt, which makes the uncontrolled rinsing or brushing with the resulting hazardous work activities unnecessary and inherently unnecessary can be easily integrated into existing production facilities.

Gelöst wird diese Aufgabe durch die Merkmale des Hauptanspruchs.This task is solved by the features of the main claim.

Weitergehende vorteilhafte Ausbildungen sind in den Unteransprüchen erfaßt.Further advantageous training are covered in the subclaims.

Die Vorrichtung beinhaltet im wesentlichen eine Druckwasserspüleinrichtung am Rohranfang sowie am Rohrende eine verfahrbare Spanfangeinrichtung, eine Spanführungseinrichtung, eine Spanschneideinrichtung und eine Spanschrott-Auffangeinrichtung, welche unmittelbar an das Rohrende und aneinander anschließend angeordnet sind.The device essentially contains a pressurized water rinsing device at the beginning of the pipe and at the end of the pipe a movable chip-catching device, a chip-guiding device, a chip-cutting device and a chip-collecting device, which are arranged directly at the pipe end and next to one another.

Durch diese Anordnung kann der ausgespülte lange Span nicht mehr unkontrolliert aus dem Rohrende austreten, wird durch die Spanführungseinrichtung ohne wesentliche Knickung oder Knäuelbildung direkt einem Schneidvorgang zugeführt und als geschnittener Spanschrott in einer Auffangeinrichtung gesammelt. Die Entsorgung des Spanschrottes beschränkt sich damit auf ein einfaches Austauschen eines Auffangbehälters.As a result of this arrangement, the rinsed-out long chip can no longer emerge from the pipe end in an uncontrolled manner, and is caused by the chip guide device without significant kinking or Ball formation is fed directly to a cutting process and collected as cut scrap in a collecting device. The disposal of the scrap metal is thus limited to simply replacing a collecting container.

Diese Anordnung erlaubt weiterhin die Anwendung der Vorrichtung für jeden beliebigen Rohrdurchmesser, da alle Werkzeuge und Einrichtungen zur Zerkleinerung sich außerhalb des Rohres befinden. Die aneinander anschließenden und insofern ein geschlossenes System bildenden Einrichtungen erlauben es, den Innenspan mittels Wasserdruck aus dem Rohr durch die Spanführungseinrichtung und auch noch durch die Spanschneideinrichtung in die Spanschrott-Auffangeinrichtung zu transportieren und auf jegliche Zwischenhandhabungen zu verzichten.This arrangement also allows the device to be used for any pipe diameter, since all tools and devices for comminution are located outside the pipe. The devices which are connected to one another and thus form a closed system make it possible to transport the inner chip from the pipe by means of water pressure through the chip guide device and also through the chip cutting device into the chip scrap collecting device and to dispense with any intermediate handling.

Hierzu ist die Spanführungseinrichtung als ein die Spanfangeinrichtung und die Spanschneideinrichtung verbindender Hohlkörper ausgebildet, so daß eine in etwa dem Innenquerschnitt des Rohres entsprechende Hülse vorhanden ist, welche ungewolltes Ausknicken des ausgespülten Innenspan vermeidet.For this purpose, the chip guiding device is designed as a hollow body connecting the chip catching device and the chip cutting device, so that there is a sleeve corresponding approximately to the inner cross section of the tube, which avoids unwanted buckling of the rinsed inner chip.

Als Druck- bzw. Spülmedium läßt sich gleichermaßen Emulsion oder Luft verwenden.Emulsion or air can equally be used as the pressure or flushing medium.

Die Ausbildung des Hohlkörpers durch teleskopierende Rohre ermöglicht eine einfache und auf unterschiedliche Rohrlängen einzustellende Verlängerung oder Verkürzung der Führungseinrichtung. Hierbei wird das im Durchmesser kleinste Teleskoprohr vorteilhafter Weise mit der Spanfangeinrichtung und das im Durchmesser größte mit der Spanschneideinrichtung verbunden, so daß der Span an den Übergangsstellen von einem zum anderen Teleskoprohr während des Durchspülens nicht anstoßen kann.The design of the hollow body by means of telescopic tubes enables the guide device to be lengthened or shortened easily and to be adjusted to different tube lengths. In this case, the smallest diameter telescopic tube is advantageously connected to the chip catcher and the largest diameter to the chip cutting device, so that the chip cannot bump at the transition points from one telescope tube to the other during the flushing.

Die Ausbildung der Spanfangeinrichtung als zum Rohrende sich öffnender Trichter erlaubt den Anschluß derselben an Rohrenden unterschiedlichen Durchmessers, so daß jeweils ein größerer Abmessungsbereich von Rohren ohne Umbau in der Vorrichtung fixiert und dem Innenspan-Zerkleinerungsprozeß unterworfen werden kann.The design of the chip catcher as a funnel opening towards the pipe end allows the connection of the same to pipe ends of different diameters, so that a larger range of dimensions of pipes can be fixed in the device without modification and subjected to the internal chip comminution process.

Ein problemloses Einlegen und Auswerfen der zu bearbeitenden Rohre in bzw. aus der/die Vorrichtung wird durch die zusätzlich zur Spanfangeinrichtung verfahrbare Halterung für die Druckwasser-Spüleinrichtung gewährleistet. Um Einlegezustand oder beim Auswerfen werden dann die Druckwasser-Spüleinrichtung und die Spanfangeinrichtung - z. B. mittels Pneumatikzylindern - auf einen die Rohrlänge etwa überschreitenden Abstand auseinandergefahren.Trouble-free insertion and ejection of the pipes to be processed into or out of the device is ensured by the holder for the pressurized water flushing device, which can be moved in addition to the chip-catching device. The pressurized water rinsing device and the chip catcher - e.g. B. by means of pneumatic cylinders - moved apart to a distance that exceeds the pipe length.

Durch eine Mengenregeleinrichtung für das Druckwasser und auch durch eine einstellbare Drehzahl des Antriebs des rotierenden Messerkopfes lassen sich die Fördergeschwindigkeit des Spanes und die Schnittfrequenz auf einfache Weise festlegen, daß jede gewünschte Spanschrottlänge erreicht werden kann.By means of a quantity control device for the pressurized water and also by an adjustable speed of the drive of the rotating cutter head, the conveying speed of the chip and the cutting frequency can be easily determined so that any desired chip scrap length can be achieved.

Die Schneideinrichtung in der Ausbildung des Anspruchs 4 bewirkt eine vorteilhafte Führung und Lage des Spanes beim Schneidvorgang ohne besondere Spannwerkzeuge und zeigt sich ausgesprochen robust und störungsresistent. Der Schnittspalt kann hier leicht durch eine auf den Schneidring wirkende Gewindespindel verändert werden, wobei sich dann der Abstand zwischen der Ebene der rotierenden Messer und der Ebene der Schneidringkante verändert.The cutting device in the embodiment of claim 4 brings about an advantageous guidance and position of the chip during the cutting process without special clamping tools and is extremely robust and resistant to interference. The cutting gap can easily be changed here by a threaded spindle acting on the cutting ring, the distance between the plane of the rotating knives and the plane of the cutting ring edge then changing.

Die Messer sind fachmännisch selbstverständlich als Wende- und Wechselwerkzeuge ausgebildet, so daß hohe Standzeiten und einfacher Werkzeugwechsel gewährleistet sind.The knives are, of course, professionally designed as turning and changing tools, so that long tool life and easy tool changes are guaranteed.

Vorteilhafter Weise kann - bei einer Ausbildung gemäß Anspruch 6 - die Vorrichtung innerhalb bzw. direkt neben einer automatischen Rohrfertigungsanlage in den Fertigungsprozeß intergriert werden, so daß das austretende Fertigrohr entgratet ist und der Innenspan bereits transportfertig zerkleinert vorliegt.In an embodiment according to claim 6, the device can advantageously be integrated into the production process within or directly next to an automatic pipe production system, so that the emerging finished pipe is deburred and the inner chip is already shredded ready for transport.

Letztlich besteht eine besonders einfache Lösung für eine Spanschrott-Auffangeinrichtung darin, einen zur Spanschneideinrichtung offenen aber ansonsten geschlossenen Kübel vorzusehen, welcher einen Schrottbehälter umschließt, der leicht und innerhalb kürzester Zeit nach dem Füllen gegen einen Leerbehälter ausgetauscht und entsorgt werden kann.Ultimately, a particularly simple solution for a chip collection device is to provide a bucket which is open but otherwise closed to the chip cutting device and which encloses a scrap container which can be exchanged for an empty container and disposed of easily and within a very short time after filling.

Anhand eines Ausführungsbeispiels soll die Erfindung näher erläutert werden. Es zeigen

Fig. 1
die erfindungsgemäße Vorrichtung in der Seitenansicht,
Fig. 2
den Endbereich der erfindungemäßen Vorrichtung im Betriebszustand,
Fig. 3
einen Schnitt durch die erfindungsgemäße Vorrichtung entsprechend der Linie A-A
Die in der Fig. 1 zur besseren Übersicht ohne das aus lediglich Transportrosten und Übergabeeinrichtungen bestehende Mittelteil dargestellte erfindungsgemäße Vorrichtung zeigt die verfahrbare Spanfangeinrichtung 1, welche mit ihrem Gehäuse 2 auf einen Wagen 3 montiert ist, der wiederum auf eine Führungsschiene 4 über eine den unterschiedlichen Rohrlängen angepaßte Verstellänge 5 voreingestellt werden kann. Die als zum Rohrende 6 (siehe Fig. 2) sich öffnender Trichter ausgebildete Spanfangeinrichtung 1 ist - wie in der Fig. 1 gestrichelt dargestellt -, zusätzlich auch auf dem Wagen 3 verfahrbar, so daß nach der Voreinstellung auf die grobe Rohrlänge durch ein kurzes Zurück- und Vorfahren der Spanfangeinrichtung 1 auf dem Wagen 3 ein problemloses Einlegen und Auswerfen des Rohres erfolgen kann.The invention will be explained in more detail using an exemplary embodiment. Show it
Fig. 1
the device according to the invention in side view,
Fig. 2
the end area of the device according to the invention in the operating state,
Fig. 3
a section through the device according to the invention along the line AA
The device according to the invention shown in FIG. 1 for a better overview without the central part consisting only of transport grids and transfer devices shows the movable chip-catching device 1, which is mounted with its housing 2 on a carriage 3, which in turn is mounted on a guide rail 4 over one of the different pipe lengths adjusted adjustment length 5 can be preset. The chip catching device 1, which is designed as a funnel opening towards the pipe end 6 (see FIG. 2), is - as shown in dashed lines in FIG. 1 - additionally on the Carriage 3 can be moved so that after presetting to the coarse pipe length by a short retraction and advancement of the chip-catching device 1 on the carriage 3, the pipe can be easily inserted and ejected.

Eine aus teleskopierenden Rohren 7a-7f bestehende Spanführungseinrichtung 8 schließt sich ablaufseitig in der Hauptachse an und ist mit der Spanfangeinrichtung über Flanschkupplungen fest verbunden. Die teleskopierenden Rohre 7a-7f werden somit je nach Stellung der Spanfangeinrichtung 1 innerhalb der Verstellänge 5 entsprechend auseinandergezogen.A chip guide device 8 consisting of telescopic pipes 7a-7f connects on the outlet side in the main axis and is firmly connected to the chip catcher via flange couplings. The telescopic tubes 7a-7f are thus pulled apart depending on the position of the chip catcher 1 within the adjustment length 5.

Es folgt weiter ablaufseitig die Spanschneideinrichtung 10 mit ihrem drehzahlregelbaren Antrieb 11, dem Schneidring 12 und dem rotierenden Messerkopf 13 sowie die als Kübel ausgebildete Spanschrott-Auffangeinrichtung 14 welche zur Entnahme eines nicht näher dargestellten Schrottbehälters mit einem zu öffnenden Deckel 15 versehen ist. Die Spanschrott-Auffangeinrichtung 14 ist zur besseren Darstellung des Messerkopfes 13 im Bereich ihrer zur Spanschneideinrichtung 10 weisenden Öffnung 16 aufgebrochen gezeichnet.On the outlet side, there follows the chip cutting device 10 with its speed-adjustable drive 11, the cutting ring 12 and the rotating cutter head 13, and the chip scrap collecting device 14, which is designed as a bucket and which is provided with a lid 15 which can be opened to remove a scrap container (not shown). The chip scrap collecting device 14 is shown broken away for better illustration of the cutter head 13 in the region of its opening 16 facing the chip cutting device 10.

Der einlaufseitige Anfang der erfindungsgemäßen Vorrichtung weist eine Druckwasser-Spüleinrichtung 17 auf, welche eine hier nicht näher dargestellte Druckwasser-Mengenregeleinrichtung beinhaltet. Gespült wird hierbei mit einem Wasserdruck von etwa 30 bar. Die Druckwasser-Spüleinrichtung 17 ist auf einer Halterung 18 über einen kurzen Weg längs verfahrbar angeordnet, so daß nach grober Längenvoreinstellung des am anderen Ende der Vorrichtung befindlichen Gehäuses 2 - der Verfahrfunktion der Spanschrott-Auffangvorrichtung 14 entgegengesetzt gleichgeschaltet - das Einlegen und Auswerfen der Rohre problemlos erfolgt. Die Halterung 18 lagert auf einem Grundrahmen 19, wobei Halterung und Grundrahmen in ihrem Lagerbereich als gegensätzlich geneigte schiefe Ebenen ausgebildet sind. Erreicht wird hierdurch mittels Verschieben der Halterung 18 auf dem Grundrahmen 19 eine an die jeweiligen Rohrdurchmesser angepaßte Höheneinstellung der Druckwasser-Spüleinrichtung 17.The inlet-side beginning of the device according to the invention has a pressurized water flushing device 17, which contains a pressurized water quantity control device, not shown here. This is done with a water pressure of around 30 bar. The pressurized water rinsing device 17 is arranged on a holder 18 so that it can be moved longitudinally over a short distance, so that after roughly pre-setting the housing 2 at the other end of the device - switched in the opposite direction to the travel function of the chip collection device 14 - the insertion and ejection of the pipes is problem-free he follows. The bracket 18 is supported on a base frame 19, the bracket and base frame being formed in their storage area as oppositely inclined inclined planes. This is achieved by moving the bracket 18 on the Base frame 19 a height adjustment of the pressurized water flushing device 17 adapted to the respective pipe diameter.

Fig. 2 zeigt den Endbereich der erfindungsgemäßen Vorrichtung im Betriebszustand mit einem eingelegten und fixierten Rohr 20 mit einem Außendurchmesser von 114,3 mm und einer Wanddicke von 3,6 mm.2 shows the end region of the device according to the invention in the operating state with an inserted and fixed tube 20 with an outside diameter of 114.3 mm and a wall thickness of 3.6 mm.

Die Spanfangeinrichtung 1 ist entsprechend der Rohrlänge verfahren und umschließt mit ihrem Trichter das Rohrende 6. Die teleskopierenden Rohre 7a-7f sind entsprechend dieses Verfahrweges ausgezogen.The chip-catching device 1 is moved according to the pipe length and encloses the pipe end 6 with its funnel. The telescopic pipes 7a-7f are extended in accordance with this travel path.

Fig. 3 verdeutlicht anhand eines Schnittes die Funktionsweise der Spanschneideinrichtung 10. Der durch den Druckwasserstrahl ausgetriebene Span tritt aus dem Schneidring 12 aus und wird durch den rotierenden Messerkopf 13 zerschnitten. Der durch die rotierenden Messer 21a-21d beschriebene Schneidquerschnitt überdeckt hier vollständig den Querschnitt des Schneidringes 13. Der Schneidring 13 ist hierbei drehbar, so daß nach hinreichendem Verschleiß des beim Schnitt im wesentlichen beanspruchten unteren Teils des Schneidringes durch sein Verdrehen ein weiterer, nicht verschlissener Schneidringabschnitt in Schnittposition gedreht werden kann. Die Messer sind als Rechteckplatten mit vier Schneiden ausgeführt und können nach entsprechendem Verschleiß einer Schneide gewendet werden.3 illustrates the operation of the chip cutting device 10 on the basis of a section. The chip expelled by the pressurized water jet emerges from the cutting ring 12 and is cut by the rotating cutter head 13. The cutting cross-section described by the rotating knives 21a-21d here completely covers the cross-section of the cutting ring 13. The cutting ring 13 is rotatable here, so that after sufficient wear of the lower part of the cutting ring, which is essentially stressed during the cutting, its rotation causes a further, not worn cutting ring section can be rotated into the cutting position. The knives are designed as rectangular plates with four cutting edges and can be turned after a cutting edge has worn out.

Der abgeschnittene Spanschrott fällt nach dem Schnitt in einen nicht näher dargestellten Schrottbehälter am Boden der Spanschrott-Auffangeinrichtung 14.The cut chip scrap falls after the cut into a scrap container, not shown, on the bottom of the chip scrap collecting device 14.

Claims (7)

  1. Device for comminuting the internal chips resulting from the internal burring of straight bead welded pipes (20), in front of which device a single pipe (20), still containing the internal chips which have been scraped off, can be positioned after being separated from the continuously produced piping, and a hydraulic flushing device (17) of which is disposed at the beginning of the pipe to flush out the internal chips, characterised in that
    - a mobile chip collecting device (1), which is formed as a hopper which opens towards the pipe end (6)
    - a chip guide device (8), which consists of telescopic tubes (7a - 7f)
    - a chip cutting device (10), which is connected to the chip collecting device (1) via the chip guide device (8), which is formed as a hollow body
    - and a chip scrap collecting device (14)
    are disposed adjacent to one another immediately after the pipe end (6).
  2. Device according to claim 1, characterised in that the hydraulic flushing device (17) is disposed on a mobile holder (18).
  3. Device according to claims 1 and 2, characterised in that the hydraulic flushing device (17) comprises a hydraulic quantity control device.
  4. Device according to one of claims 1 - 3, characterised in that the chip cutting device (10) contains a cutting ring (12), which encircles the entering chips, and a rotating cutter head (13) with interchangeable cutters (21a-21d), the axis of the cutter head (13) being disposed parallel and staggered with respect to the axis of the cutting ring (12), and the cutting cross section described by the rotating cutters (21a-21d) at least partly overlapping the cross section of the cutting ring (12).
  5. Device according to claim 4, characterised in that the speed of the drive (11) of the rotating cutter head (13) can be adjusted.
  6. Device according to one of claims 1 - 5, characterised in that the chip collecting device (1), the chip guide device (8) and the chip cutting device (10) have a common principal axis (9) and this principal axis (9) is disposed parallel and in a delivery position with respect to the axis of a pipe production line.
  7. Device according to one of claims 1 - 6, characterised in that the chip scrap collecting device (14) is formed as a tub which is provided with an opening (16) towards the chip cutting device and is otherwise closed.
EP91112573A 1990-09-07 1991-07-26 Device for the comminution of inner chips of longitudinally welded pipes Expired - Lifetime EP0473932B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4028372 1990-09-07
DE4028372A DE4028372C1 (en) 1990-09-07 1990-09-07

Publications (3)

Publication Number Publication Date
EP0473932A2 EP0473932A2 (en) 1992-03-11
EP0473932A3 EP0473932A3 (en) 1992-06-24
EP0473932B1 true EP0473932B1 (en) 1994-12-07

Family

ID=6413770

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Application Number Title Priority Date Filing Date
EP91112573A Expired - Lifetime EP0473932B1 (en) 1990-09-07 1991-07-26 Device for the comminution of inner chips of longitudinally welded pipes

Country Status (5)

Country Link
EP (1) EP0473932B1 (en)
AT (1) ATE115021T1 (en)
DE (2) DE4028372C1 (en)
ES (1) ES2030640T3 (en)
GR (1) GR920300079T1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237683C2 (en) * 1992-10-01 1996-01-18 Axa Masch Und Armaturen Gmbh Crushing device for long chips
DE4407419C2 (en) * 1994-03-03 1997-03-13 Mannesmann Ag Device for rinsing and shredding the inner chip of longitudinally welded pipes
CN110052665B (en) * 2019-05-08 2020-06-02 燕山大学 A interior burr clearing device for permanent bottom surface shaping steel pipe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3219369C2 (en) * 1982-05-19 1984-06-07 Dr.tech. Ernst Linsinger & Co GmbH, 4662 Steyrermühl Method and device for producing short chips when deburring the inside of pipes
US4893972A (en) * 1988-11-18 1990-01-16 Pittsburgh Tube Company Cutting tool

Also Published As

Publication number Publication date
DE4028372C1 (en) 1991-09-12
GR920300079T1 (en) 1992-12-30
ES2030640T3 (en) 1995-03-01
EP0473932A3 (en) 1992-06-24
EP0473932A2 (en) 1992-03-11
ES2030640T1 (en) 1992-11-16
ATE115021T1 (en) 1994-12-15
DE59103775D1 (en) 1995-01-19

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