EP0419447B1 - Method and device for descaling of round steel bars - Google Patents

Method and device for descaling of round steel bars Download PDF

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Publication number
EP0419447B1
EP0419447B1 EP90890263A EP90890263A EP0419447B1 EP 0419447 B1 EP0419447 B1 EP 0419447B1 EP 90890263 A EP90890263 A EP 90890263A EP 90890263 A EP90890263 A EP 90890263A EP 0419447 B1 EP0419447 B1 EP 0419447B1
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EP
European Patent Office
Prior art keywords
bars
advancing
installation according
conveyor
steel bars
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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.)
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EP90890263A
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German (de)
French (fr)
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EP0419447A1 (en
Inventor
Gerhard Dipl.-Ing. Dr. Ritter
Klaus Dipl.-Ing. Ritter
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AVI Alpenlaendische Veredelungs Industrie GmbH
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AVI Alpenlaendische Veredelungs Industrie GmbH
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    • 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
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/004—Transverse moving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B21B43/003—Transfer to bed

Definitions

  • the invention relates to a method for descaling round steel bars, in particular hot-rolled steel bars, in which a group of steel bars is lifted together, shifted horizontally while maintaining their mutual relative position, placed on a roller table and conveyed by means of the roller table through a descaling device; the invention further relates to a plant for performing the method.
  • DD-PS 60,956 the feeding of a descaling device with rod material is known, in which several devices with one carriage each are provided parallel to a roller table of the descaling device, all of the carriages being movable together horizontally.
  • a saddle which can be raised and lowered by a curved track, is arranged on each car and is equipped with interchangeable brackets adapted to the profile to be descaled.
  • the ready material is grasped with the help of this device, raised a little and, after a horizontal displacement by means of the trolleys, placed on the roller table of the descaling device.
  • the roller table then conveys the material through the blasting chamber of the descaling device.
  • the main disadvantage of this procedure is that the feed of the steel bars depends on the working speed of the descaling device and that a continuously adjustable transverse distance between the steel bars cannot be provided.
  • the object of the invention is to avoid the disadvantages of the prior art and to provide a method and a system for carrying out the same, with which a flawless supply of steel rods with an infinitely variable transverse spacing of the rods from the feed device operating at a relatively high speed is achieved in a simple manner to the relatively slow descaling device.
  • the method according to the invention has the features that the steel bars are in succession while maintaining a selectable transverse distance be dropped onto a feed device that moves continuously in the transverse direction of the bar and the set of bars is lifted from these continuously moving steel bars and after the horizontal displacement onto the roller table in the longitudinal direction of the bar while keeping the predetermined relative position of the bars, the descaling device in which the bars are transferred in the descaled substantially over their entire scope.
  • the rods are preferably aligned in the transverse direction of the rod and preferably also in the longitudinal direction of the rod after they have been applied to the feed device.
  • a system designed according to the invention for carrying out the method with a feed device for round steel bars and a device connected downstream for feeding the bars with a mutual transverse spacing, with transport combs, which are arranged on a transport carriage in a height-adjustable manner for lifting coulters from the feed device, with one device for receiving the rods from the transport combs and for transferring the rods in the longitudinal direction of the rod to a descaling device, and with a control device for the feed device, the transport combs and the transfer device is characterized in that above the feed device, as is known per se, has a rod end at its end from the laterally arranged feed device, the bar ejection device is arranged such that the bar ejection device has at least one pivotable chute for receiving a bar and has a discharge channel open to the feed device, the pivoting movement of the discharge channel being able to be matched to the conveying movement of the feed device by means of the control device such that the rods can be deposited on the feed device with a selectable transverse
  • the transfer device is preferably designed as a roller table with a plurality of drivable rollers which, as is known per se, can be pushed through by the transport combs for transferring the rods.
  • the guide device is formed by a lower roller with a roughened, preferably grooved surface and an upper pressure roller which can be adjusted against the lower roller.
  • the discharge channel of the discharge device ends near the feed device and can be closed in the conveying direction of the feed device by a height-adjustable stop that can be actuated by means of a positioning device.
  • an end position monitor controlling the lifting movement of the transport combs is advantageously provided at the end of the feed device facing away from the discharge channel.
  • the supply device can be preceded by a supply device with two magazines for pre-cut steel bars and can be moved in the transverse direction of the bar, the feed device preferably containing a cutting device.
  • a supply device with at least one round steel material supply drum with a subsequent straightening device can be connected upstream of the feed device, the feed device containing a cutting device.
  • a rod S in its longitudinal direction P2 is one Feed device 3, which is provided with feed rollers (not shown), a length measuring device and scissors, is fed to a discharge device 4 with a discharge channel K which is open at the bottom.
  • the rods S fall individually onto a horizontally arranged feed device 5, which consists of a plurality of parallel conveyor belts 6 arranged at a distance from one another.
  • the conveyor belts 6 are guided by a drive roller 7 which is common to all conveyor belts and driven in the direction of the arrow P 1 and by a deflection roller 8 per conveyor belt 6.
  • a corresponding control command is given to the transport combs 10 so that they are lifted simultaneously and in parallel in the direction of the arrow P5 and the rods S lift off the conveyor belts 6.
  • the length of the transport combs 10 is selected so that all the bars S to be processed are securely gripped.
  • the surfaces 10 ′ of the transport combs 10 are grooved in order to prevent the rods S from slipping in the transverse direction during the movements of the transport combs 10.
  • the roller table 13 consists of several separate rollers 12, which are mounted on a common frame 16, and are driven individually or in groups via driven connecting chains 17.
  • a roller 18 of the roller table 13 adjacent to the descaling device 14 has a grooved surface 18 '.
  • the transport carriage 9 moves with the transport combs 10 in the lowered position from the position 103 in the direction of the arrow P9 into the starting position 101 (FIG. 2).
  • the discharge device 4 has two discharge channels 20, each of which receives a rod.
  • the rod S passes through the discharge channel K to the feed device 5 and is horizontally conveyed away from the discharge channel K in the direction of the arrow P3.
  • the ejection movement of the rod S in the direction of the arrow P11 is preferably done by gravity, but can also be accelerated by additional, not shown deflection fingers.
  • the discharge channel K ends as close as possible to the conveyor belts 6 of the feed device 5 in order to position the falling rods as precisely as possible on the conveyor belts 6.
  • a positioning device 21 with a plurality of stop bolts 22, which can be adjusted in accordance with the double arrow P 12, which are each located between the conveyor belts 6 and extend the discharge channel K downwards on the outlet side.
  • the pivoting movement of the discharge chute 20 is matched to the conveying speed of the conveyor belts 6 of the feed device 5 in such a way that the bars S approximately fall onto the conveyor belts 6 with the transverse distance desired for the descaling device 14. If two discharge channels 20 are used, these are preferably actuated alternately. Sloping bars are moved by means of the positioning device 21 while the conveyor belt is running aligned.
  • control device mentioned also controls all controllable devices and their movements, such as the displacement of the supply device 1, the feed device 3, the discharge device 4, the feed device 5, the method of the transport carriage 9, the vertical displacement of the transport combs 10, the transfer roller table 13, the conveyor device 15 , and the positioning device 21 with the stop pin 22nd
  • Fig. 1 it is possible within the scope of the invention to provide a plurality of storage magazines 1 ', 1' ', one storage magazine 1' being in the transfer position to the feed device 3, while the other storage magazine 1 '' is to be loaded with rods is ready.
  • the rod material can be supplied directly from supply drums or reels into the supply device 3 via a straightening system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Metal Extraction Processes (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

Method and device for descaling of round steel bars, in which the steel bars (S) are dropped one after the other, while maintaining a selectable transverse spacing, onto a feed device (5) moving continuously in the transverse direction of the bars, and a group of bars from among these continuously moving steel bars is lifted, while maintaining their position relative to one another, displaced horizontally and transferred in a positively guided manner in the longitudinal direction of the bars, while maintaining the predetermined relative position of the bars, to a descaling device (14), in which the bars are descaled over essentially their entire circumference. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Entzundern von Rundstahlstäben, insbesondere warmgewalzten Stahlstäben, bei welchem eine Schar von Stahlstäben gemeinsam angehoben, unter Beibehaltung ihrer gegenseitigen Relativlage horizontal verlagert, auf einen Rollgang abgelegt und mit Hilfe des Rollganges durch eine Entzunderungseinrichtung befördert wird; die Erfindung bezieht sich ferner auf eine Anlage zur Durchführung des Verfahrens.The invention relates to a method for descaling round steel bars, in particular hot-rolled steel bars, in which a group of steel bars is lifted together, shifted horizontally while maintaining their mutual relative position, placed on a roller table and conveyed by means of the roller table through a descaling device; the invention further relates to a plant for performing the method.

Aus der DD-PS 60.956 ist die Beschickung einer Entzunderungseinrichtung mit Stangenmaterial bekannt, bei der parallel zu einem Rollgang der Entzunderungseinrichtung mehrere Vorrichtungen mit jeweils einem Wagen vorgesehen sind, wobei alle Wagen gemeinsam horizontal bewegbar sind. Auf jedem Wagen ist ein durch eine Kurvengleitbahn heb- und senkbarer Sattel angeordnet, der mit auswechselbaren, dem zu entzundernden Profil angepaßten Halterungen versehen ist. Das bereitliegende Material wird mit Hilfe dieser Vorrichtung erfaßt, etwas angehoben und nach einer horizontalen Verschiebung mittels der Wagen auf dem Rollgang der Entzunderungseinrichtung abgelegt. Der Rollgang fördert anschließend das Material durch den Strahlraum der Entzunderungseinrichtung. Nachteilig ist bei dieser Vorgangsweise vor allem, daß die Zuführung der Stahlstäbe von der Arbeitsgeschwindigkeit der Entzunderungseinrichtung abhängt und daß ein stufenlos einstellbarer Querabstand der Stahlstäbe nicht vorgesehen werden kann.From DD-PS 60,956, the feeding of a descaling device with rod material is known, in which several devices with one carriage each are provided parallel to a roller table of the descaling device, all of the carriages being movable together horizontally. A saddle, which can be raised and lowered by a curved track, is arranged on each car and is equipped with interchangeable brackets adapted to the profile to be descaled. The ready material is grasped with the help of this device, raised a little and, after a horizontal displacement by means of the trolleys, placed on the roller table of the descaling device. The roller table then conveys the material through the blasting chamber of the descaling device. The main disadvantage of this procedure is that the feed of the steel bars depends on the working speed of the descaling device and that a continuously adjustable transverse distance between the steel bars cannot be provided.

Aufgabe der Erfindung ist es, die Nachteile des Standes der Technik zu vermeiden und ein Verfahren sowie eine Anlage zur Durchführung desselben zu schaffen, mit denen auf einfache Weise eine einwandfreie Zufuhr von Stahlstäben mit stufenlos wählbarem Querabstand der Stäbe von der mit relativ hoher Geschwindigkeit arbeitenden Zuführeinrichtung zu der relativ langsam arbeitenden Entzunderungseinrichtung ermöglicht wird. Das erfindungsgemäße Verfahren hat die Merkmale, daß die Stahlstäbe nacheinander unter Einhaltung eines wählbaren Querabstandes auf eine in Stabquerrichtung kontinuierlich wandernde Vorschubeinrichtung fallen gelassen werden und von diesen kontinuierlich wandernden Stahlstäben jeweils die Schar von Stäben angehoben und nach der Horizontalverlagerung auf den Rollgang in Stablängsrichtung unter Beibehaltung der vorbestimmten Relativlage der Stäbe formschlüssig geführt der Entzunderungseinrichtung übergeben wird, in welcher die Stäbe im wesentlichen über ihren gesamten Umfang entzundert werden.The object of the invention is to avoid the disadvantages of the prior art and to provide a method and a system for carrying out the same, with which a flawless supply of steel rods with an infinitely variable transverse spacing of the rods from the feed device operating at a relatively high speed is achieved in a simple manner to the relatively slow descaling device. The method according to the invention has the features that the steel bars are in succession while maintaining a selectable transverse distance be dropped onto a feed device that moves continuously in the transverse direction of the bar and the set of bars is lifted from these continuously moving steel bars and after the horizontal displacement onto the roller table in the longitudinal direction of the bar while keeping the predetermined relative position of the bars, the descaling device in which the bars are transferred in the descaled substantially over their entire scope.

Hiedurch wird erreicht, daß die unterschiedlichen Arbeitsgeschwindigkeiten der vorteilhaft rasch arbeitenden Zuführeinrichtung und der langsam arbeitenden Entzunderungseinrichtung ausgeglichen und abgepuffert werden. Zugleich wird gewährleistet, daß die Stäbe in der Entzunderungseinrichtung ausreichend gegenseitigen Querabstand haben um sie über ihren gesamten Umfang zu entzundern, so daß sie hinterher einwandfrei verschweißt werden können.This ensures that the different working speeds of the advantageously fast-working feed device and the slow-working descaling device are compensated for and buffered. At the same time, it is ensured that the bars in the descaling device have sufficient mutual transverse spacing to descaling them over their entire circumference, so that they can be welded properly afterwards.

Vorzugsweise werden die Stäbe nach ihrem Aufbringen auf die Vorschubeinrichtung in Stabquerrichtung und vorzugsweise auch in Stablängsrichtung ausgerichtet.The rods are preferably aligned in the transverse direction of the rod and preferably also in the longitudinal direction of the rod after they have been applied to the feed device.

Eine gemäß der Erfindung ausgebildete Anlage zur Durchführung des Verfahrens, mit einer Zuführeinrichtung für Rundstahlstäbe und einer dieser nachgeschalteten Einrichtung zum Vorschub der Stäbe mit gegenseitigem Querabstand, mit Transportkämmen, die zum Herausheben von Stabscharen aus der Vorschubeinrichtung auf einem Transportschlitten höhenverstellbar angeordnet sind, mit einer Einrichtung zur Aufnahme der Stäbe von den Transportkämmen und zur Übergabe der Stäbe in Stablängsrichtung an eine Entzunderungseinrichtung, und mit einer Steuereinrichtung für die Vorschubeinrichtung, die Transportkämme und die Übergabeeinrichtung zeichnet sich dadurch aus, daß oberhalb der Vorschubeinrichtung, wie an sich bekannt, an deren Stabaufnahmeende eine von der seitlich angeordneten Zufuhreinrichtung beschickte Stababwurfeinrichtung angeordnet ist, daß die Stababwurfeinrichtung zumindest eine verschwenkbare Abwurfrinne zur Aufnahme je eines Stabes und einen zur Vorschubeinrichtung offenen Abwurfkanal aufweist, wobei die Schwenkbewegung der Abwurfrinne mittels der Steuereinrichtung derart auf die Förderbewegung der Vorschubeinrichtung abstimmbar ist, daß die Stäbe mit wählbarem Querabstand auf die Vorschubeinrichtung ablegbar sind, und daß der Übergabeeinrichtung eine Führungseinrichtung zum formschlüssigen Einführen der Stäbe in die Entzunderungseinrichtung nachgeschaltet ist.A system designed according to the invention for carrying out the method, with a feed device for round steel bars and a device connected downstream for feeding the bars with a mutual transverse spacing, with transport combs, which are arranged on a transport carriage in a height-adjustable manner for lifting coulters from the feed device, with one device for receiving the rods from the transport combs and for transferring the rods in the longitudinal direction of the rod to a descaling device, and with a control device for the feed device, the transport combs and the transfer device is characterized in that above the feed device, as is known per se, has a rod end at its end from the laterally arranged feed device, the bar ejection device is arranged such that the bar ejection device has at least one pivotable chute for receiving a bar and has a discharge channel open to the feed device, the pivoting movement of the discharge channel being able to be matched to the conveying movement of the feed device by means of the control device such that the rods can be deposited on the feed device with a selectable transverse distance, and that the transfer device has a guide device for the positive insertion of the rods into the descaling device is connected downstream.

Vorzugsweise ist die Übergabeeinrichtung als Rollgang mit mehreren antreibbaren Rollen ausgebildet, der von den Transportkämmen, wie an sich bekannt, zur Übergabe der Stäbe durchsetzbar ist.The transfer device is preferably designed as a roller table with a plurality of drivable rollers which, as is known per se, can be pushed through by the transport combs for transferring the rods.

Nach einem weiteren Erfindungsmerkmal ist die Führungseinrichtung durch eine untere Rolle mit aufgerauhter, vorzugsweise gerillter Oberfläche und eine obere Anpreßrolle gebildet, die gegen die untere Rolle anstellbar ist.According to a further feature of the invention, the guide device is formed by a lower roller with a roughened, preferably grooved surface and an upper pressure roller which can be adjusted against the lower roller.

Nach einem anderen Erfindungsmerkmal endet der Abwurfkanal der Abwurfeinrichtung nahe der Vorschubeinrichtung und ist in Förderrichtung der Vorschubeinrichtung durch einen mittels einer Positioniereinrichtung gesteuert betätigbaren, höhenverstellbaren Anschlag verschließbar. Dabei ist vorteilhaft an dem dem Abwurfkanal abgekehrten Ende der Vorschubeinrichtung ein die Aushebbewegung der Transportkämme steuernder Endlagenwächter vorgesehen.According to another feature of the invention, the discharge channel of the discharge device ends near the feed device and can be closed in the conveying direction of the feed device by a height-adjustable stop that can be actuated by means of a positioning device. In this case, an end position monitor controlling the lifting movement of the transport combs is advantageously provided at the end of the feed device facing away from the discharge channel.

Im Rahmen der Erfindung kann der Zuführeinrichtung eine Vorratseinrichtung mit zwei Magazinen für vorabgelängte Stahlstäbe vorgeschaltet und in Stabquerrichtung verfahrbar sein, wobei die Zuführeinrichtung vorzugsweise eine Schneideinrichtung enthält.In the context of the invention, the supply device can be preceded by a supply device with two magazines for pre-cut steel bars and can be moved in the transverse direction of the bar, the feed device preferably containing a cutting device.

Alternativ kann der Zuführeinrichtung eine Vorratseinrichtung mit zumindest einer Rundstahlmaterial-Vorratstrommel mit nachgeschalteter Richteinrichtung vorgeschaltet sein, wobei die Zuführeinrichtung eine Schneideinrichtung enthält.Alternatively, a supply device with at least one round steel material supply drum with a subsequent straightening device can be connected upstream of the feed device, the feed device containing a cutting device.

Weitere Merkmale der Erfindung werden nachfolgend an einem Ausführungsbeispiel unter Bezugnahme auf die Zeichnungen näher erläutert. Es zeigen:

  • Fig. 1 in schematischer Darstellung eine Draufsicht auf eine erfindungsgemäße Anlage und
  • Fig. 2 schematisch Förder- und Transporteinrichtungen der Anlage in Seitenansicht.
Further features of the invention are explained in more detail below using an exemplary embodiment with reference to the drawings. Show it:
  • Fig. 1 is a schematic representation of a top view on a system according to the invention and
  • Fig. 2 shows schematically conveyor and transport devices of the system in side view.

Aus einer zwei Magazine 1', 1'' aufweisenden Vorratseinrichtung 1, die entsprechend dem Doppelpfeil P₁ auf Laufschienen 2 querverfahrbar angeordnet ist und in der sich zur Verarbeitung vorgesehene, vorzugsweise warmgewalzte Stabstäbe S befinden, wird jeweils ein Stab S in seiner Längsrichtung P₂ über eine Zuführeinrichtung 3, die mit nicht dargestellten Vorschubrollen, einer Längenmeßeinrichtung und einer Schere versehen ist, einer Abwurfeinrichtung 4 mit einem nach unten offenen Abwurfkanal K zugeführt. Aus der Abwurfeinrichtung 4 fallen, wie später an Hand von Fig. 2 noch genauer beschrieben wird, die Stäbe S einzeln auf eine horizontal angeordnete Vorschubeinrichtung 5, die aus mehreren parallelen und mit gegenseitigem Abstand angeordneten endlosen Förderbändern 6 besteht. Die Förderbänder 6 sind um eine allen Förderbändern gemeinsame, in Richtung des Pfeiles P₁₃ angetriebene Antriebsrolle 7 und um je eine Umlenkrolle 8 pro Förderband 6 geführt.From a two magazines 1 ', 1' 'having storage device 1, which is arranged according to the double arrow P₁ on rails 2 crosswise and in which are provided for processing, preferably hot-rolled rod bars S, a rod S in its longitudinal direction P₂ is one Feed device 3, which is provided with feed rollers (not shown), a length measuring device and scissors, is fed to a discharge device 4 with a discharge channel K which is open at the bottom. From the ejection device 4, as will be described in more detail later with reference to FIG. 2, the rods S fall individually onto a horizontally arranged feed device 5, which consists of a plurality of parallel conveyor belts 6 arranged at a distance from one another. The conveyor belts 6 are guided by a drive roller 7 which is common to all conveyor belts and driven in the direction of the arrow P 1 and by a deflection roller 8 per conveyor belt 6.

Durch entsprechende Steuerung der Abwurfeinrichtung 4 im Zusammenspiel mit der Laufgeschwindigkeit der Förderbänder 6 wird erreicht, daß die Stäbe S vereinzelt und mit wählbarem gegenseitigem Querabstand auf den Förderbändern abgelegt werden. Mit Hilfe der Vorschubeinrichtung 5 werden die Stäbe S quer zu ihrer Längsrichtung in Richtung des Pfeiles P₃ kontinuierlich von der Abwurfeinrichtung 4 weggefördert. Am Ende der Förderbahn der Vorschubeinrichtung 5 steht ein entsprechend dem Doppelpfeil P₄ verfahrbarer, in Fig. 2 nur schematisch dargestellter Transportschlitten 9 mit mehreren, vertikal verstellbaren Transportkämmen 10 bereit, die sich jeweils zwischen den einzelnen Förderbändern 6 zunächst in abgesenkter Position 10₁ unterhalb der Förderbänder 6 befinden. Hiebei ist der seitliche Abstand der Transportkämme 10 an der der Zuführeinrichtung 3 zugewandten Seite so eng wie möglich gewählt, um auch kurze Stäbe übernehmen zu können.By appropriate control of the discharge device 4 in interaction with the running speed of the conveyor belts 6 it is achieved that the bars S are separated and placed on the conveyor belts with a selectable mutual transverse distance. With the help of the feed device 5, the rods S are continuously conveyed away from the discharge device 4 transversely to their longitudinal direction in the direction of the arrow P₃. At the end of the conveyor path of the feed device 5 there is a transport carriage 9 which can be moved in accordance with the double arrow P₄ and is only shown schematically in FIG are located. The lateral spacing of the transport combs 10 on the side facing the feed device 3 is chosen to be as narrow as possible so that short rods can also be taken over.

Sobald ein Stab S einen in Fig. 2 dargestellten Endlagenwächter 11 erreicht, wird ein entsprechender Steuerbefehl an die Transportkämme 10 gegeben, so daß diese in Richtung des Pfeiles P₅ gleichzeitig und parallel angehoben werden und die Stäbe S von den Förderbändern 6 abheben. Die Länge der Transportkämme 10 ist so gewählt, daß alle der Bearbeitung zuzuführenden Stäbe S sicher erfaßt werden.As soon as a rod S reaches an end position monitor 11 shown in FIG. 2, a corresponding control command is given to the transport combs 10 so that they are lifted simultaneously and in parallel in the direction of the arrow P₅ and the rods S lift off the conveyor belts 6. The length of the transport combs 10 is selected so that all the bars S to be processed are securely gripped.

Die Oberflächen 10' der Transportkämme 10 sind gerillt ausgebildet, um ein Verrutschen der Stäbe S in Querrichtung bei den Bewegungen der Transportkämme 10 zu verhindern.The surfaces 10 ′ of the transport combs 10 are grooved in order to prevent the rods S from slipping in the transverse direction during the movements of the transport combs 10.

In der angehobenen Stellung 10₂ (Fig. 2) werden anschließend mit Hilfe des Transportschlittens 9 alle Transportkämme 10 gemeinsam in horizontaler Richtung gemäß dem Pfeil P₆ zwischen Rollen 12 eines Übergaberollganges 13 bewegt. Durch anschließendes Absenken der Transportkämme 10 in Richtung des Pfeiles P₇ in die abgesenkte Position 10₃ unterhalb der Rollen 12 gelangen die Stäbe S auf den Rollgang 13, der die Stäbe anschließend gruppenweise und mit im wesentlichen unverändertem gegenseitigem Querabstand in Richtung des Pfeiles P₈ einer Entzunderungseinrichtung 14 zuführt, die auf derselben Seite der Vorschubeinrichtung 5 wie die Zuführeinrichtung 3 angeordnet ist. Der Entzunderungseinrichtung 14 schließt sich eine weitere Fördereinrichtung 15 zum Abtransport der Stäbe S an.In the raised position 10₂ (Fig. 2) all transport combs 10 are then moved together in the horizontal direction according to the arrow P₆ between rollers 12 of a transfer roller table 13 with the help of the transport carriage 9. By subsequently lowering the transport combs 10 in the direction of arrow P Pfeil in the lowered position 10₃ below the rollers 12, the rods S arrive on the roller table 13, which then supplies the rods in groups and with an essentially unchanged transverse distance in the direction of arrow P₈ to a descaling device 14 , which is arranged on the same side of the feed device 5 as the feed device 3. The descaling device 14 is followed by a further conveyor device 15 for the removal of the bars S.

Der Rollgang 13 besteht aus mehreren voneinander getrennten Rollen 12, die auf einem gemeinsamen Gestell 16 montiert sind, und deren Antrieb einzeln oder auch gruppenweise über angetriebene Verbindungsketten 17 erfolgt. Eine der Entzunderungseinrichtung 14 benachbarte Rolle 18 des Rollganges 13 weist eine gerillte Oberfläche 18' auf. Eine oberhalb der Rolle 18 angeordnete, gegen diese anstellbare Anpreßrolle 19, die vorzugsweise aus elastischem Material, wie Hartgummi, besteht, drückt die Stäbe S fest in die gerillte Oberfläche 18' der Rolle 18 und verhindert somit einerseits ein seitliches Ausweichen der Stäbe S und bewirkt anderseits eine Ausrichtung etwaiger aus der Parallelage verrutschter Stabenden.The roller table 13 consists of several separate rollers 12, which are mounted on a common frame 16, and are driven individually or in groups via driven connecting chains 17. A roller 18 of the roller table 13 adjacent to the descaling device 14 has a grooved surface 18 '. An arranged above the roller 18, against this pressure roller 19, which preferably consists of elastic material, such as hard rubber, presses the rods S firmly into the grooved surface 18 'of the roller 18 and thus on the one hand prevents the rods S from evading laterally and causes on the other hand, an alignment of any rod ends that have slipped out of the parallel position.

Nach der Übergabe der Stäbe S an den Rollgang 13 fährt der Transportschlitten 9 mit den in abgesenkter Stellung befindlichen Transportkämmen 10 aus der Position 10₃ in Richtung des Pfeiles P₉ in die Ausgangsposition 10₁ (Fig. 2) zurück.After the transfer of the rods S to the roller table 13, the transport carriage 9 moves with the transport combs 10 in the lowered position from the position 10₃ in the direction of the arrow P₉ into the starting position 10₁ (FIG. 2).

Wie in der Ansicht gemäß Fig. 2 dargestellt ist, weist die Abwurfeinrichtung 4 zwei Abwurfrinnen 20 auf, die je einen Stab aufnehmen. Durch seitliches Ausschwenken jeder Abwurfrinne 20 gemäß dem Doppelpfeil P₁₀ gelangt der Stab S durch den Abwurfkanal K auf die Vorschubeinrichtung 5 und wird durch diese in Richtung des Pfeiles P₃ horizontal aus dem Abwurfkanal K weggefördert.As shown in the view according to FIG. 2, the discharge device 4 has two discharge channels 20, each of which receives a rod. By swiveling each discharge channel 20 sideways according to the double arrow P₁₀, the rod S passes through the discharge channel K to the feed device 5 and is horizontally conveyed away from the discharge channel K in the direction of the arrow P₃.

Die Abwurfbewegung des Stabes S in Richtung des Pfeiles P₁₁ erfolgt vorzugsweise mittels Schwerkraft, kann aber auch durch zusätzliche, nicht dargestellte Ausschlagfinger beschleunigt werden.The ejection movement of the rod S in the direction of the arrow P₁₁ is preferably done by gravity, but can also be accelerated by additional, not shown deflection fingers.

Der Abwurfkanal K endet möglichst nahe an den Förderbändern 6 der Vorschubeinrichtung 5, um die herabfallenden Stäbe möglichst genau auf den Förderbändern 6 zu positionieren. Auf der horizontalen Auslaufseite des Abwurfkanals K befindet sich eine Positioniereinrichtung 21 mit mehreren entsprechend dem Doppelpfeil P₁₂ verstellbaren Anschlagbolzen 22, die sich jeweils zwischen den Förderbändern 6 befinden und den Auswurfkanal K an der Auslaufseite nach unten verlängern. Durch entsprechend angesteuertes Zurückziehen der Anschlagbolzen 22 nach unten (Doppelpfeil P₁₂) wird die horizontale Auslaufseite des Auswurfkanals K kurzfristig zur Förderung der Stäbe S mittels der Vorschubeinrichtung 5 freigegeben.The discharge channel K ends as close as possible to the conveyor belts 6 of the feed device 5 in order to position the falling rods as precisely as possible on the conveyor belts 6. On the horizontal outlet side of the discharge channel K there is a positioning device 21 with a plurality of stop bolts 22, which can be adjusted in accordance with the double arrow P 12, which are each located between the conveyor belts 6 and extend the discharge channel K downwards on the outlet side. By appropriately controlled retraction of the stop pin 22 down (double arrow P₁₂) the horizontal outlet side of the ejection channel K is released for a short time to promote the rods S by means of the feed device 5.

Mit Hilfe einer nicht dargestellten Steuereinrichtung wird die Schwenkbewegung der Abwurfrinne 20 derart auf die Fördergeschwindigkeit der Förderbänder 6 der Vorschubeinrichtung 5 abgestimmt, daß die Stäbe S angenähert mit dem für die Entzunderungseinrichtung 14 gewünschten Querabstand vereinzelt auf den Förderbändern 6 fallen. Bei Verwendung von zwei Abwurfrinnen 20 werden diese vorzugsweise abwechselnd angesteuert. Schrägliegende Stäbe werden mittels der Positioniereinrichtung 21 bei laufendem Förderband ausgerichtet.With the help of a control device, not shown, the pivoting movement of the discharge chute 20 is matched to the conveying speed of the conveyor belts 6 of the feed device 5 in such a way that the bars S approximately fall onto the conveyor belts 6 with the transverse distance desired for the descaling device 14. If two discharge channels 20 are used, these are preferably actuated alternately. Sloping bars are moved by means of the positioning device 21 while the conveyor belt is running aligned.

Die erwähnte Steuereinrichtung steuert außerdem alle ansteuerbaren Einrichtungen und deren Bewegungen, wie die Verschiebung der Vorratseinrichtung 1, die Zuführeinrichtung 3, die Abwurfeinrichtung 4, die Vorschubeinrichtung 5, das Verfahren des Transportschlittens 9, die Vertikalverschiebung der Transportkämme 10, den Übergaberollgang 13, die Fördereinrichtung 15, sowie die Positioniereinrichtung 21 mit den Anschlagbolzen 22.The control device mentioned also controls all controllable devices and their movements, such as the displacement of the supply device 1, the feed device 3, the discharge device 4, the feed device 5, the method of the transport carriage 9, the vertical displacement of the transport combs 10, the transfer roller table 13, the conveyor device 15 , and the positioning device 21 with the stop pin 22nd

Wie in Fig. 1 dargestellt, ist es im Rahmen der Erfindung möglich, mehrere Vorratsmagazine 1', 1'' vorzusehen, wobei ein Vorratsmagazin 1' sich in der Übergabeposition zur Zuführeinrichtung 3 befindet, während das andere Vorratsmagazin 1'' zur Beschickung mit Stäben bereitsteht.As shown in Fig. 1, it is possible within the scope of the invention to provide a plurality of storage magazines 1 ', 1' ', one storage magazine 1' being in the transfer position to the feed device 3, while the other storage magazine 1 '' is to be loaded with rods is ready.

Ferner kann im Rahmen der Erfindung anstelle der Zufuhr von abgelängten, geraden Stäben aus Vorratsmagazinen eine Zufuhr des Stabmaterials von Vorratstrommeln oder -haspeln über eine Richtanlage direkt in die Zuführeinrichtung 3 erfolgen. Außerdem ist es im Rahmen der Erfindung möglich, bereits auf endgültige Fertigungslänge geschnittene Stäbe S unter Stillsetzung der Schere der Zuführeinrichtung 3 direkt der Abwurfeinrichtung 4 zuzuführen.Furthermore, within the scope of the invention, instead of the supply of cut, straight rods from supply magazines, the rod material can be supplied directly from supply drums or reels into the supply device 3 via a straightening system. In addition, it is possible within the scope of the invention to feed rods S, which have already been cut to the final production length, with the scissors of the feed device 3 stopped, directly to the discharge device 4.

Claims (12)

  1. A method of de-scaling round steel bars (S), particularly hot-rolled steel bars, wherein a set of steel bars (S) is jointly lifted, shifted horizontally with their relative positions maintained, deposited on a roller bed (13) and conveyed through a de-scaling device (14) by the roller bed (13), characterized in that the steel bars (S) are dropped one after another, with a selectable transverse spacing maintained, onto an advancing device (5) continously moving in a direction transverse to the bars, and in that said set of steel bars (S) is lifted from said continously moving steel bars (S) and, after said horizontal shift on the roller bed (13), is transferred in the longitudinal direction of the bars (S) with form-fit guidance and with their predetermined relative positions maintained to the de-scaling device (14) in which the bars (S) are de-scaled substantially over their entire circumference.
  2. The method according to claim 1, characterized in that said bars (S) after their deposition on the advancing device are aligned in the direction transverse to the bars, preferably also in the longitudinal direction of the bars.
  3. An installation for performing the method according to claim 1 or 2, comprising a feeding device (3) for round steel bars (S) and, downstream thereof, a device (5) for advancing the bars (S) with transverse spacing, conveyor combs (10) arranged on a conveyor sled (9) adjustable in height for lifting sets of bars from the advancing device (5), a device (13) for receiving the bars (S) from the conveyor combs (10) and for transferring the bars (S) in the longitudinal direction of the bars to a de-scaling device (14), and a control device for the advancing device (5), for the conveyor combs (10), and for the transferring device (13), characterized in that a bar dropping device (4), which is fed by the laterally disposed feeding device (3), is arranged above the advancing device (5) at the bar receiving end thereof, in that the bar dropping device (4) includes at least one pivotable dropping gutter (20) for receiving one bar (S) each, and a dropping channel (K) open to the advancing device (5), the pivoting movement (P₁₀) of the dropping gutter (20) being adjustable to the conveying movement (P₃) of the advancing device (5) in such a way that the bars (S) are deposable onto the advancing device (5) with selectable transverse spacing, and in that a guiding device (18) for the form-fit feeding of the bars (S) into the de-scaling device (14) is arranged downstream of the transferring device (13).
  4. The installation according to claim 3, characterized in that the advancing device (5) comprises a plurality of endless conveyor units (6).
  5. The installation according to claim 3 or 4, characterized in that the conveyor combs, which are insertable between the conveyor units (6) of the advancing device (5), have different spacing.
  6. The installation according to any of the claims 3 to 5, characterized in that the surface (10') of the conveyor combs (10) is roughened, preferably grooved.
  7. The installation according to any of the claims 3 to 6, characterized in that the transferring device is comprised of a roller bed (13) with a plurality of driven rolls, which is penetratable by the conveyor combs (10) for the transfer of the bars.
  8. The installation according to any of the claims 1 to 7, characterized in that the guiding device is comprised of a lower roll (18) having a roughened, preferably grooved, surface (18') and an upper clamping roll (19) adapted to be applied against the lower roll.
  9. The installation according to any of the claims 3 to 8, characterized in that the dropping channel (K) of the dropping device (4) terminates near the advancing device (5) and is adapted to be closed in the direction of advance (P₃) of the advancing device by means of a stopper (22) which is adjustable in height and actuable by a positioning device (21) in a controlled manner.
  10. The installation according to any of the claims 3 to 9, characterized in that an end-of-travel monitor (11) is provided at the end of the advancing device (5) opposite the dropping channel (K), which controls the lifting movement (P₅) of the conveyor combs (10).
  11. The installation according to any of the claims 3 to 10, characterized in that a supply device (1) having two magazines (1', 1'') for pre-cut steel bars is arranged upstream of the feeding device (3) and is movable in the direction transverse to the bars, the feeding device (3) preferably comprising a cutting device.
  12. The installation according to any of the claims 3 to 10, characterized in that a supply device (1) with at least one supply drum for round steel material having an alignment device located downstream thereof is arranged upstream of the feeding device (3), the feeding device (3) comprising a cutting device.
EP90890263A 1989-09-20 1990-09-17 Method and device for descaling of round steel bars Expired - Lifetime EP0419447B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2204/89 1989-09-20
AT0220489A AT394324B (en) 1989-09-20 1989-09-20 METHOD AND SYSTEM FOR DESCALING STAINLESS STEEL RODS

Publications (2)

Publication Number Publication Date
EP0419447A1 EP0419447A1 (en) 1991-03-27
EP0419447B1 true EP0419447B1 (en) 1993-07-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90890263A Expired - Lifetime EP0419447B1 (en) 1989-09-20 1990-09-17 Method and device for descaling of round steel bars

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EP (1) EP0419447B1 (en)
AT (2) AT394324B (en)
DE (1) DE59002022D1 (en)
ES (1) ES2020910A4 (en)

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CN107597855A (en) * 2017-10-19 2018-01-19 中国重型机械研究院股份公司 A kind of mass blank automatic feeding device

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IT1290711B1 (en) * 1997-01-22 1998-12-10 Simac Spa HIGH SPEED DISCHARGE DEVICE IN PLATE OF BARS AND PROFILES IN LAMINATION PLANTS
IT1318893B1 (en) * 2000-09-15 2003-09-19 Danieli & Co Ohg S P A DEVICE FOR THE ONLINE TREATMENT OF LAMINATED METAL PRODUCTS
CN102240682B (en) * 2011-05-05 2013-10-09 安阳市合力高速冷轧有限公司 Automatic wire feed rack
CN109382768B (en) * 2018-11-15 2023-12-15 江苏诚德钢管股份有限公司 High-pressure water jet cold-state descaling equipment for inner surface of small and medium-caliber seamless pipe

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Publication number Priority date Publication date Assignee Title
CN107597855A (en) * 2017-10-19 2018-01-19 中国重型机械研究院股份公司 A kind of mass blank automatic feeding device

Also Published As

Publication number Publication date
AT394324B (en) 1992-03-10
DE59002022D1 (en) 1993-08-26
ES2020910A4 (en) 1991-10-16
ATE91649T1 (en) 1993-08-15
EP0419447A1 (en) 1991-03-27
ATA220489A (en) 1991-09-15

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