EP3476503B1 - Machine for cutting to length individual rods, out of wires running in a production direction, and for exact positioning of the ends of said rods - Google Patents

Machine for cutting to length individual rods, out of wires running in a production direction, and for exact positioning of the ends of said rods Download PDF

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Publication number
EP3476503B1
EP3476503B1 EP18000640.5A EP18000640A EP3476503B1 EP 3476503 B1 EP3476503 B1 EP 3476503B1 EP 18000640 A EP18000640 A EP 18000640A EP 3476503 B1 EP3476503 B1 EP 3476503B1
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Prior art keywords
rod
drum
rods
channels
production
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EP18000640.5A
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German (de)
French (fr)
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EP3476503A1 (en
Inventor
Martin Springer
Dietmar Lebenbauer
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EVG Entwicklungs und Verwertungs GmbH
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EVG Entwicklungs und Verwertungs GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/08—Making wire network, i.e. wire nets with additional connecting elements or material at crossings
    • B21F27/10—Making wire network, i.e. wire nets with additional connecting elements or material at crossings with soldered or welded crossings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B21F23/005—Feeding discrete lengths of wire or rod

Definitions

  • the invention relates to a device for cutting individual rods from a wire running in the production direction by means of scissors and for exact positioning of the ends of the rods entering a wire channel after cutting, the scissors being designed as flying scissors with knives on the circumference of the two Wire enclosing rollers are arranged, and wherein in the production direction after the scissors a revolver drum is arranged with along the generatrix of the drum distributed around its circumference, outwardly open channels for the rods.
  • the US 5,191,818 A by Gianfranco Mantovan and Gianfranco Fay shows an apparatus and a method for cutting wire, wherein segments of a predetermined length are cut by flying scissors from an endless wire source and transferred to a revolver drum with open channels.
  • the object of the invention is to provide a simple and time-saving device which uses flying scissors to cut the bars to length and exactly aligns the cut bars with one another without loss of time.
  • a friction brake which is fixedly supported on the device is provided in order to brake the feed of the rod which has just been cut to length, and in that a wire feed device which can be moved back and forth in the production direction is provided and which engages at the rear end of the cut-off rods with wire driver elements which engage in the channels can and bring the rear end of the rods into an exactly constant position in relation to the direction of production, whereby the rod initially in the position of the channel before its uppermost position, after gradually rotating the drum, moves to its lowest position, from which it moves from the lowest pos ition turned channel is given down on a shelf.
  • Fig. 1 the device schematically in a side view
  • Fig. 2 the device in the direction of production
  • Fig. 3 Fig. 10 is a speed-time diagram illustrating the reciprocation of the bar feeder.
  • a turret drum 5 is arranged with a horizontal axis of rotation 6, which can be rotated stepwise clockwise by means of a rotary drive, not shown.
  • the revolver drum 5 has along the generatrix of the drum 5 distributed around its circumference outwardly open channels 7 into which the cut rods 4 can enter.
  • a rod advancing device 8 is arranged in the production direction P after the scissors and in or in front of the front region of the revolver drum 5 .
  • a travel drive for the rod feed device 8 is designated by 14.
  • the turret drum 5 is arranged so that the channel 7 in its position 7A, which is in the direction of rotation of the drum 5 in the in Fig. 2 the moment shown is located in front of the topmost position 7B, lies in the production direction P and can accommodate the rod 4 that has just been cut to length. Due to the kinetic energy communicated by the flying scissors, this rod 4 has come to lie at any point within a distance b with its rear end 4A after a first section a adjoining the interface, its front end already being within the position 7A located channel 7 of the turret drum 5 is located.
  • the advancement takes place by means of a first rod driver element 9A, which is arranged on the rod advancing device 8 in its upper region. If the rear end 4A of the rod 4 comes to lie within the second third x1 of the entire travel distance b of the rod advancing device 8 due to the greater kinetic energy communicated to it, the advancement caused by the latter occurs only by means of a second rod driver element 9B, which is in the middle height range of the rod advancing device 8 is arranged.
  • rod driver elements 9A, 9B, 9C arranged at different heights on the rod advancing device 8 are also arranged laterally and offset from one another with mutual distances x1 corresponding to the positions of the channels 7 of the revolver drum 5.
  • the rotation steps of the revolver drum 5 must be coordinated with the reciprocating movement of the rod advancing device 8 such that the rod driver elements 9A, 9B, 9C are located outside the channels 7 of the drum 5 when the drum 5 is rotated further.
  • a pawl device 10 is provided which the rod driver elements 9A, 9B, 9C about an axis 10A against the action of a Spring 10B pivots out of channels 7 in positions 7C.
  • a friction brake 11 For braking the kinetic energy of the rod 4, which is communicated by the flying scissors and whose front end is located in the channel 7 of the revolver drum 5 in the uppermost position 7B and slides further forward there, a friction brake 11 is provided which is supported in a stationary manner on the device , The friction brake 11 is formed with a friction pawl 12 which can be pivoted towards and away from the rod 4 as long as the rod 4 is in the channel 7 of the revolver drum 5 which occupies the uppermost position 7B.
  • the force with which the friction pawl 12 presses on the rod 4 can be adjusted in accordance with the diameter, the length and the surface properties of the rods 4 such that the rear end 4A of the rod 4, as mentioned above, between the position at a distance from the Interface and a position within the adjoining travel path b of the rod feed device 8 comes to rest.
  • a pneumatic actuation cylinder for the friction brake 11 is designated 13.
  • the position 7A of the channels 7 arranged in the direction of rotation of the drum 5 before the uppermost position 7B is the one where that front end of the just cut rod 4 after scissors first enters.
  • This position 7A of the channels 7 can be referred to as the entry channel.
  • the channel 7 located in the uppermost position 7B is therefore referred to as the brake channel.
  • the channels 7 located in the three positions 7C downstream of the drum 5 in the clockwise direction of rotation are referred to as rectifier channels.
  • advancement steps can be carried out by means of the rod driver elements 9A, 9B. With fast operation, a feed step only takes place in the last rectifier channel.
  • the lowest channel 7 in this position 7D is referred to as the delivery channel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Basic Packing Technique (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Specific Conveyance Elements (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Ablängen einzelner Stäbe von einem in Produktionsrichtung durchlaufenden Draht mittels einer Schere und zum exakten Positionieren der Enden der nach dem Ablängen in einen Drahtkanal eintretenden Stäbe, wobei die Schere als fliegende Schere mit Messern ausgebildet ist, die am Umfang zweier den Draht einschließender Rollen angeordnet sind, und wobei in der Produktionsrichtung nach der Schere eine Revolvertrommel mit entlang der Erzeugenden der Trommel um deren Umfang verteilt verlaufenden, nach außen offenen Kanälen für die Stäbe angeordnet ist.The invention relates to a device for cutting individual rods from a wire running in the production direction by means of scissors and for exact positioning of the ends of the rods entering a wire channel after cutting, the scissors being designed as flying scissors with knives on the circumference of the two Wire enclosing rollers are arranged, and wherein in the production direction after the scissors a revolver drum is arranged with along the generatrix of the drum distributed around its circumference, outwardly open channels for the rods.

In drahtverarbeitenden Anlagen müssen häufig einzelne Stäbe von Drähten größerer Länge abgeschnitten und die Stäbe dann zur weiteren Verarbeitung, z.B. für das Schweißen von Gittermatten, in eine genau definierte Lage gebracht werden. Erfolgt das Ablängen mittels stationärer Scheren, ergibt sich der Nachteil, dass der die Anlage durchlaufende Draht zum Schneiden angehalten werden muss, was Verluste an Zeit und Energieverbrauch und außerdem Unruhe und Lärm in der Produktionslinie verursacht und zu Schäden an der Staboberfläche führen kann. Zur Vermeidung dieser Nachteile ist der Einsatz fliegender Scheren bekannt, die aber den Nachteil haben, dass die aus der Schere auslaufenden Stäbe infolge der durch die Schere mitgeteilten Bewegungsenergie nach der Schere ungleich zu liegen kommen. Für die Weiterverarbeitung ist aber eine stets gleiche Lage der Stäbe erforderlich, sodass die Stäbe mit den Enden aufeinander ausgerichtet werden müssen, was aufwendige Arbeitsschritte erfordert und zu Zeitverlusten führt.In wire processing plants, individual rods often have to be cut from wires of greater length and the rods then have to be brought into a precisely defined position for further processing, for example for welding mesh mats. The disadvantage of cutting to length using stationary shears is that the wire passing through the system has to be stopped for cutting, which causes loss of time and energy consumption, as well as unrest and noise in the production line and can damage the rod surface. To avoid these disadvantages, the use of flying scissors is known, but they have the disadvantage that the rods emerging from the scissors come to lie unevenly after the scissors due to the kinetic energy communicated by the scissors. For the further processing, however, the rods always have to be in the same position, so that the ends of the rods have to be aligned with one another, which requires complex work steps and leads to wasted time.

Die US 5 191 818 A von Gianfranco Mantovan und Gianfranco Fay zeigt eine Vorrichtung und ein Verfahren zum Ablängen von Draht, wobei von einer endlosen Drahtquelle Segmente von vorbestimmter Länge durch eine fliegende Schere geschnitten und einer Revolvertrommel mit offenen Kanälen übergeben werden.The US 5,191,818 A by Gianfranco Mantovan and Gianfranco Fay shows an apparatus and a method for cutting wire, wherein segments of a predetermined length are cut by flying scissors from an endless wire source and transferred to a revolver drum with open channels.

Die Erfindung stellt sich die Aufgabe, eine einfache und zeitsparend arbeitende Vorrichtung bereitzustellen, welche zum Ablängen der Stäbe eine fliegende Schere einsetzt und die abgelängten Stäbe ohne Zeitverlust mit ihren Enden exakt aufeinander ausrichtet.The object of the invention is to provide a simple and time-saving device which uses flying scissors to cut the bars to length and exactly aligns the cut bars with one another without loss of time.

Dies wird bei einer Vorrichtung der eingangs erwähnten Art dadurch erreicht, dass die Revolvertrommel so angeordnet ist, dass der Kanal, der sich im Drehsinn der Trommel in einer Position vor der obersten Position befindet, in der Produktionsrichtung liegt und den eben abgelängten Stab aufnehmen kann, wobei eine an der Vorrichtung ortsfest abgestützte Reibungsbremse vorgesehen ist, um den Vorschub des eben abgelängten Stabes abzubremsen, und dass eine in der Produktionsrichtung hin und her fahrbare Drahtvorschiebeeinrichtung vorgesehen ist, die am hinteren Ende der abgelängten Stäbe mit Drahtmitnehmerelementen angreift, welche in die Kanäle eingreifen können und das hintere Ende der Stäbe in eine exakt gleichbleibende Position bezogen auf die Produktionsrichtung bringen, wobei der zunächst in der Position des Kanals vor dessen oberster Position befindliche Stab nach schrittweisem Drehen der Trommel in seine unterste Position gelangt, aus welcher er aus dem in die unterste Position gedrehten Kanal nach unten auf eine Ablage abgegeben wird.This is achieved in a device of the type mentioned at the outset in that the revolver drum is arranged in such a way that the channel which is in the direction of rotation of the drum in a position in front of the uppermost position lies in the production direction and can receive the rod which has just been cut to length. wherein a friction brake which is fixedly supported on the device is provided in order to brake the feed of the rod which has just been cut to length, and in that a wire feed device which can be moved back and forth in the production direction is provided and which engages at the rear end of the cut-off rods with wire driver elements which engage in the channels can and bring the rear end of the rods into an exactly constant position in relation to the direction of production, whereby the rod initially in the position of the channel before its uppermost position, after gradually rotating the drum, moves to its lowest position, from which it moves from the lowest pos ition turned channel is given down on a shelf.

Weitere Merkmale der erfindungsgemäßen Vorrichtung finden sich in den abhängigen Ansprüchen.Further features of the device according to the invention can be found in the dependent claims.

Die erfindungsgemäße Vorrichtung wird näher erläutert anhand eines in der Zeichnung dargestellten Ausführungsbeispiels. In der Zeichnung zeigt Fig. 1 die Vorrichtung schematisch in einer Seitenansicht und Fig. 2 die Vorrichtung in Produktionsrichtung, in Fig. 1 von links her, gesehen. Fig. 3 ist ein Geschwindigkeits-Zeit-Diagramm zur Veranschaulichung des Hin- und Herbewegens der Stabvorschiebeeinrichtung.The device according to the invention is explained in more detail with reference to an embodiment shown in the drawing. In the drawing shows Fig. 1 the device schematically in a side view and Fig. 2 the device in the direction of production, in Fig. 1 seen from the left. Fig. 3 Fig. 10 is a speed-time diagram illustrating the reciprocation of the bar feeder.

Von einem in der Produktionsrichtung P horizontal durchlaufenden Draht ist in Fig. 1 nur die mit 1 bezeichnete Mittellinie dargestellt. Der Draht wird mittels einer fliegenden Schere zwischen zwei ihn einschließenden, sich drehender Rollen 2 mit an deren Umfang angeordneten Messern 3 in einzelne Stäbe 4 gleicher bzw. unterschiedlicher, wählbarer Länge geschnitten. In der Produktionsrichtung P nach der Schere ist eine Revolvertrommel 5 mit einer horizontalen Drehachse 6 angeordnet, die mittels eines nicht dargestellten Drehantriebs schrittweise im Uhrzeigersinn drehbar ist. Die Revolvertrommel 5 hat entlang der Erzeugenden der Trommel 5 um deren Umfang verteilt nach außen offene Kanäle 7, in die die abgelängten Stäbe 4 eintreten können. In der Produktionsrichtung P nach der Schere und im bzw. vor dem vorderen Bereich der Revolvertrommel 5 ist eine in der und gegen die Produktionsrichtung P hin und her fahrbare Stabvorschiebeeinrichtung 8 angeordnet. Ein Fahrantrieb für die Stabvorschiebeeinrichtung 8 ist mit 14 bezeichnet.From a wire running horizontally in the production direction P is in Fig. 1 only the center line labeled 1 is shown. The wire is cut by means of flying scissors between two rotating rollers 2 enclosing it, with knives 3 arranged on its circumference, into individual rods 4 of the same or different, selectable length. In the production direction P after the scissors, a turret drum 5 is arranged with a horizontal axis of rotation 6, which can be rotated stepwise clockwise by means of a rotary drive, not shown. The revolver drum 5 has along the generatrix of the drum 5 distributed around its circumference outwardly open channels 7 into which the cut rods 4 can enter. Arranged in the production direction P after the scissors and in or in front of the front region of the revolver drum 5 is a rod advancing device 8 which can be moved back and forth in the production direction P. A travel drive for the rod feed device 8 is designated by 14.

Die Revolvertrommel 5 ist so angeordnet, dass der Kanal 7 in seiner Position 7A, welche sich im Drehsinn der Trommel 5 in dem in Fig. 2 dargestellten Moment vor der zuoberst angeordneten Position 7B befindet, in der Produktionsrichtung P liegt und den eben abgelängten Stab 4 aufnehmen kann. Dieser Stab 4 ist aufgrund seiner durch die fliegende Schere mitgeteilten Bewegungsenergie mit seinem hinteren Ende 4A nach einem ersten an die Schnittstelle anschließenden Abschnitt a an einer beliebigen Stelle innerhalb einer Strecke b zu liegen gekommen, wobei sich sein vorderes Ende bereits innerhalb des in der Position 7A befindlichen Kanals 7 der Revolvertrommel 5 befindet. Befindet sich das hintere Ende 4A des zu liegen gekommenen Stabes 4 innerhalb des ersten Drittels x1 der gesamten Fahrstrecke b der Stabvorschiebeeinrichtung 8, erfolgt der Vorschub mittels eines ersten Stabmitnehmerelementes 9A, das an der Stabvorschiebeeinrichtung 8 in deren oberem Bereich angeordnet ist. Ist das hintere Ende 4A des Stabes 4 infolge der ihm mitgeteilten größeren Bewegungsenergie innerhalb des zweiten Drittels x1 der gesamten Fahrstrecke b der Stabvorschiebeeinrichtung 8 zu liegen gekommen, erfolgt der durch letztere bewirkte Vorschub erst mittels eines zweiten Stabmitnehmerelementes 9B, das im mittleren Höhenbereich der Stabvorschiebeeinrichtung 8 angeordnet ist. Ist das hintere Ende 4A des Stabes 4 infolge seiner noch größeren Geschwindigkeit erst innerhalb des dritten Drittels x1 der gesamten Fahrstrecke b der Stabvorschiebeeinrichtung 8 zu liegen gekommen, erfolgt der erstmalig durch letztere bewirkte Vorschub erst mittels eines dritten Stabmitnehmerelementes 9C, das im unteren Bereich der Stabvorschiebeeinrichtung 8 angeordnet ist. Wenn alle Stäbe 4 mit ihrem hinteren Ende 4A innerhalb des ersten Drittels x1 der Fahrstrecke b zu liegen kommen, wie dies bei relativ langsamem Betrieb der Vorrichtung in der Regel der Fall sein kann, sind alle drei Stabmitnehmerelemente 9A, 9B, 9C an dem Vorschiebevorgang beteiligt; bei schnellem Betrieb nur das letzte, im unteren Bereich der Stabvorschiebeeinrichtung 8 angeordnete Stabmitnehmerelement 9C. Die in die Kanäle 7 der Revolvertrommel 5 eingeschobenen Stäbe 4 gelangen nach dem schrittweisen Drehen der Trommel 5 am Ende in eine Lage, in welcher der den jeweiligen Stab 4 aufnehmende Kanal 7 sich ganz unten in der Position 7D befindet. In dieser Lage kann der jeweilige Stab 4 aus dem Kanal 7 auf eine in der Zeichnung nicht dargestellte Ablage herausfallen bzw. ausgestoßen werden.The turret drum 5 is arranged so that the channel 7 in its position 7A, which is in the direction of rotation of the drum 5 in the in Fig. 2 the moment shown is located in front of the topmost position 7B, lies in the production direction P and can accommodate the rod 4 that has just been cut to length. Due to the kinetic energy communicated by the flying scissors, this rod 4 has come to lie at any point within a distance b with its rear end 4A after a first section a adjoining the interface, its front end already being within the position 7A located channel 7 of the turret drum 5 is located. If the rear end 4A of the rod 4 that has come to rest lies within the first third x1 of the entire travel distance b of the rod advancing device 8, the advancement takes place by means of a first rod driver element 9A, which is arranged on the rod advancing device 8 in its upper region. If the rear end 4A of the rod 4 comes to lie within the second third x1 of the entire travel distance b of the rod advancing device 8 due to the greater kinetic energy communicated to it, the advancement caused by the latter occurs only by means of a second rod driver element 9B, which is in the middle height range of the rod advancing device 8 is arranged. If the rear end 4A of the rod 4 only comes to lie within the third third x1 of the entire travel distance b of the rod advancing device 8 due to its even greater speed, the feed effected for the first time by the latter only takes place by means of a third rod driving element 9C, which is in the lower region of the rod advancing device 8 is arranged. If all of the rods 4 come to rest with their rear end 4A within the first third x1 of the travel distance b, as can usually be the case with relatively slow operation of the device, all three rod driver elements 9A, 9B, 9C are involved in the advancing process ; only the last one during fast operation, Rod driver element 9C arranged in the lower region of the rod advancing device 8. The rods 4 inserted into the channels 7 of the revolver drum 5, after the drum 5 has been rotated step by step, finally reach a position in which the channel 7 receiving the respective rod 4 is at the very bottom in the position 7D. In this position, the respective rod 4 can fall out of the channel 7 onto a shelf (not shown in the drawing) or be ejected.

In allen Fällen ist gewährleistet, dass das vorher irgendwo im Bereich der Fahrstrecke b der Stabvorschiebeeinrichtung 8 befindliche hintere Ende 4A des abgelängten Stabes 4 sich nach der Abgabe aus dem in der untersten Position 7D befindlichen Kanal 7 der Revolvertrommel 5 an der exakt gleichbleibenden Stelle 4B befindet.In all cases, it is ensured that the rear end 4A of the cut rod 4, which is located somewhere in the region of the travel path b of the rod advancing device 8, is located at the exactly constant point 4B after delivery from the channel 7 of the revolver drum 5 located in the lowest position 7D ,

Es versteht sich, dass die in verschiedenen Höhen an der Stabvorschiebeeinrichtung 8 angeordneten Stabmitnehmerelemente 9A, 9B, 9C entsprechend den Lagen der Kanäle 7 der Revolvertrommel 5 außerdem seitlich und zueinander mit gegenseitigen Abständen x1 versetzt angeordnet sind.It goes without saying that the rod driver elements 9A, 9B, 9C arranged at different heights on the rod advancing device 8 are also arranged laterally and offset from one another with mutual distances x1 corresponding to the positions of the channels 7 of the revolver drum 5.

Selbstverständlich müssen die Drehschritte der Revolvertrommel 5 mit der Hin- und Herbewegung der Stabvorschiebeeinrichtung 8 so abgestimmt sein, dass sich die Stabmitnehmerelemente 9A, 9B, 9C beim Weiterdrehen der Trommel 5 außerhalb der Kanäle 7 der Trommel 5 befinden. Für den Störfall des Weiterdrehens der Revolvertrommel 5, bevor die Stabmitnehmerelemente 9A, 9B, 9C die Kanäle 7 der Trommel 5 vollständig verlassen haben, ist eine Klinkeneinrichtung 10 vorgesehen, welche die Stabmitnehmerelemente 9A, 9B, 9C um eine Achse 10A gegen die Wirkung einer Feder 10B aus den in den Positionen 7C befindlichen Kanälen 7 heraus nach außen schwenkt.Of course, the rotation steps of the revolver drum 5 must be coordinated with the reciprocating movement of the rod advancing device 8 such that the rod driver elements 9A, 9B, 9C are located outside the channels 7 of the drum 5 when the drum 5 is rotated further. In the event of a malfunction in the further rotation of the revolver drum 5 before the rod driver elements 9A, 9B, 9C have completely left the channels 7 of the drum 5, a pawl device 10 is provided which the rod driver elements 9A, 9B, 9C about an axis 10A against the action of a Spring 10B pivots out of channels 7 in positions 7C.

Für das Abbremsen der von der fliegenden Schere mitgeteilten Bewegungsenergie des Stabes 4, der sich mit seinem Vorderende in dem in der obersten Position 7B befindlichen Kanal 7 der Revolvertrommel 5 befindet und dort weiter nach vorne rutscht, ist eine an der Vorrichtung ortsfest abgestützte Reibungsbremse 11 vorgesehen. Die Reibungsbremse 11 ist mit einer Reibungsklinke 12 ausgebildet, welche auf den Stab 4 hin und von diesem weg schwenkbar ist, solange sich der Stab 4 im in die oberste Position 7B einnehmenden Kanal 7 der Revolvertrommel 5 befindet. Die Kraft, mit welcher die Reibungsklinke 12 auf den Stab 4 drückt, ist entsprechend dem Durchmesser, der Länge und der Oberflächenbeschaffenheit der Stäbe 4 so einstellbar, dass das hintere Ende 4A des Stabes 4 wie oben erwähnt zwischen der Position in Abstand a anschließend an die Schnittstelle und einer Position innerhalb des daran anschließenden Verfahrweges b der Stabvorschiebeeinrichtung 8 zu liegen kommt. Ein pneumatischer Betätigungszylinder für die Reibungsbremse 11 ist mit 13 bezeichnet.For braking the kinetic energy of the rod 4, which is communicated by the flying scissors and whose front end is located in the channel 7 of the revolver drum 5 in the uppermost position 7B and slides further forward there, a friction brake 11 is provided which is supported in a stationary manner on the device , The friction brake 11 is formed with a friction pawl 12 which can be pivoted towards and away from the rod 4 as long as the rod 4 is in the channel 7 of the revolver drum 5 which occupies the uppermost position 7B. The force with which the friction pawl 12 presses on the rod 4 can be adjusted in accordance with the diameter, the length and the surface properties of the rods 4 such that the rear end 4A of the rod 4, as mentioned above, between the position at a distance from the Interface and a position within the adjoining travel path b of the rod feed device 8 comes to rest. A pneumatic actuation cylinder for the friction brake 11 is designated 13.

Die in Fig. 2 sichtbaren verschiedenen, jeweils eingenommenen Positionen der Kanäle 7 der Revolvertrommel 5 am Umfang der Trommel 5 sind im Folgenden entsprechend der jeweils ausgeübten Funktion verschieden bezeichnet: Die im Drehsinn der Trommel 5 vor der obersten Position 7B angeordnete Position 7A der Kanäle 7 ist diejenige, wo das vordere Ende des eben abgeschnittenen Stabes 4 nach der Schere zuerst eintritt. Diese Position 7A der Kanäle 7 kann als Eintrittskanal bezeichnet werden. Der Eintrittskanal 7A mitsamt dem darin noch nicht zur Ruhe gekommenen Stab 4 gelangt durch einen sehr schnell einsetzenden Drehschritt der Trommel 5 aus der Position 7A in die oberste Position 7B. Dort wird der nach wie vor schnell bewegte Stab 4 durch den auf ihm lastenden Druck der an der Reibungsbremse 11 angeordneten Reibungsklinke 12 abgebremst. Der in der obersten Position 7B befindliche Kanal 7 wird demnach als Bremskanal bezeichnet. Die in den drei in der Drehrichtung der Trommel 5 im Uhrzeigersinn nachgeordneten Positionen 7C befindlichen Kanäle 7 sind als Gleichrichterkanäle bezeichnet. In den ersten beiden Gleichrichterkanälen können Vorschiebeschritte mittels der Stabmitnehmerelemente 9A, 9B vorgenommen werden. Bei schnellem Betrieb findet nur im letzten Gleichrichterkanal ein Vorschiebeschritt statt. Der unterste Kanal 7 ist in dieser Position 7D als Abgabekanal bezeichnet.In the Fig. 2 visible different, respectively occupied positions of the channels 7 of the revolver drum 5 on the circumference of the drum 5 are designated differently in the following according to the respective function performed: the position 7A of the channels 7 arranged in the direction of rotation of the drum 5 before the uppermost position 7B is the one where that front end of the just cut rod 4 after scissors first enters. This position 7A of the channels 7 can be referred to as the entry channel. The entry channel 7A, together with the rod 4 which has not yet come to rest in it, passes through a very rapidly inserting one Rotating step of the drum 5 from the position 7A to the uppermost position 7B. There, the rod 4, which is still moving rapidly, is braked by the pressure of the friction pawl 12 arranged on the friction brake 11. The channel 7 located in the uppermost position 7B is therefore referred to as the brake channel. The channels 7 located in the three positions 7C downstream of the drum 5 in the clockwise direction of rotation are referred to as rectifier channels. In the first two rectifier channels, advancement steps can be carried out by means of the rod driver elements 9A, 9B. With fast operation, a feed step only takes place in the last rectifier channel. The lowest channel 7 in this position 7D is referred to as the delivery channel.

Claims (7)

  1. Apparatus for cutting individual rods (4) to length out of a wire (1) running in a direction of production (P) by means of shears and for exact positioning of the ends of the rods which enter a wire channel after being cut to length, the shears being in the form of flying shears having blades (3) which are arranged on the circumference of two rollers (2) enclosing the wire (1), and a revolver drum (5) being arranged downstream of the shears in the direction of production (P), which revolver drum has channels (7) for the rods (4), which channels extend along the generatrices of the drum (5) so as to be distributed around the circumference thereof and are open towards the outside, characterised in that the revolver drum (5) is arranged such that the channel (7) which is in a position (7A) upstream of the uppermost position (7B) in the direction of rotation of the drum (5) is in the direction of production (P) and can receive the rod (4) that has just been cut to length, a friction brake (11) which is supported on the apparatus so as to be fixed in place being provided in order to brake the feeding process of the rod (4) that has just been cut to length, and in that, in the direction of production (P), a reciprocally moveable rod feeding device (8) is provided which engages with rod driving elements (9A, 9B, 9C) at the rear end (4A) of the cut-to-length rods (4), which rod driving elements can engage in the channels (7) and bring the rear end (4A) of the rods (4) into an exactly constant position (4B) in relation to the direction of production (P), the rod (4) which is located firstly in the position (7A) of the channel (7) upstream of the uppermost position (7B) thereof reaching its lowermost position after gradual rotation of the drum (5), from which lowermost position the rod is delivered out of the channel (7) which is rotated to the lowest position (7D) onto a shelf below.
  2. Apparatus according to claim 1, characterised in that the rod driving elements (9A, 9B, 9C) of the wire feeding device (8) are arranged at different positions in terms of heights thereof and so as to be laterally offset according to the positions of the channels (7) of the revolver drum (5) and also offset in the direction of production (P), and at a mutual distance (x1).
  3. Apparatus according to claim 2, characterised in that, in a travel path (b) of the wire feeding device (8), which travel path is divided into, preferably three, equally long sections (x1), a rod driving element (9A, 9B, 9C) is arranged at the beginning and at the end of the sections (x1), except for the last section (x1) in the direction of production (P).
  4. Apparatus according to any of claims 1 to 3, characterised in that the clamping force of the friction brake (11) is adjustable according to the diameter, the length and the surface condition of the rods (4) such that the rear end (4A) of the rod (4), which end enters the channel (7) in the position (7A) upstream of the uppermost position (7B) in the direction of rotation of the drum (5), arrives between a position at a distance (a) adjacent to the cutting point and a position downstream of the travel path (b) of the rod feeding device (8) adjacent thereto.
  5. Apparatus according to any of claims 1 to 4, characterised in that the friction brake (11) is designed so as to have a pawl (12) which is pivotable towards and away from the rod (4).
  6. Apparatus according to any of claims 1 to 5, characterised in that the rotation steps of the revolver drum (5) with which the reciprocating movement of the rod feeding device (8) are coordinated such that the rod driving elements (9A, 9B, 9C) are outside of the channels (7) when the revolver drum (5) continues to rotate.
  7. Apparatus according to any of claims 1 to 6, characterised in that the rod driving elements (9A, 9B, 9C) can be outwardly released in the event of a failure of the continued rotation of the revolving drum (5) when the rod driving elements (9A, 9B, 9C) are located in the channels (7) of said drum.
EP18000640.5A 2017-10-24 2018-08-02 Machine for cutting to length individual rods, out of wires running in a production direction, and for exact positioning of the ends of said rods Active EP3476503B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA416/2017A AT520588B1 (en) 2017-10-24 2017-10-24 Device for cutting individual bars to length from a wire running in the direction of production and for the exact positioning of the ends of the bars

Publications (2)

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EP3476503A1 EP3476503A1 (en) 2019-05-01
EP3476503B1 true EP3476503B1 (en) 2020-02-12

Family

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EP18000640.5A Active EP3476503B1 (en) 2017-10-24 2018-08-02 Machine for cutting to length individual rods, out of wires running in a production direction, and for exact positioning of the ends of said rods

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EP (1) EP3476503B1 (en)
AT (1) AT520588B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110756703A (en) * 2019-11-06 2020-02-07 长兴小浦凯荣机械加工厂 Sectioning equipment for aluminum alloy cable processing
EP4032633A1 (en) * 2021-01-19 2022-07-27 Progress Maschinen & Automation AG Braking device for braking a wire

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202023000471U1 (en) 2023-02-28 2024-05-29 Network Quality Management GmbH Device for processing at least one axially drawn wire

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3422661A1 (en) * 1984-06-19 1985-12-19 IDEAL - Werk C. + E. Jungeblodt GmbH + Co, 4780 Lippstadt Apparatus for feeding cut-to-length longitudinal wires to a grid welding machine
US5191818A (en) * 1989-07-31 1993-03-09 Pomini Farrel S.P.A. Process and facility for shearing to length steel bars coming from a rolling mill
DE29621385U1 (en) * 1996-12-10 1997-03-06 Emil Jäger GmbH & Co KG, 48153 Münster Positioning device for cross wires
AT413341B (en) * 2004-03-25 2006-02-15 Evg Entwicklung Verwert Ges DEVICE FOR BREAKING AND EJECTING STAINLESS MATERIAL

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110756703A (en) * 2019-11-06 2020-02-07 长兴小浦凯荣机械加工厂 Sectioning equipment for aluminum alloy cable processing
EP4032633A1 (en) * 2021-01-19 2022-07-27 Progress Maschinen & Automation AG Braking device for braking a wire

Also Published As

Publication number Publication date
AT520588B1 (en) 2022-06-15
AT520588A1 (en) 2019-05-15
EP3476503A1 (en) 2019-05-01

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