EP1786712B1 - Method and device for holding sheet metal strips, and angular scissors - Google Patents

Method and device for holding sheet metal strips, and angular scissors Download PDF

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Publication number
EP1786712B1
EP1786712B1 EP05773773A EP05773773A EP1786712B1 EP 1786712 B1 EP1786712 B1 EP 1786712B1 EP 05773773 A EP05773773 A EP 05773773A EP 05773773 A EP05773773 A EP 05773773A EP 1786712 B1 EP1786712 B1 EP 1786712B1
Authority
EP
European Patent Office
Prior art keywords
metal sheet
cutting device
holding
strips
sheet strips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05773773A
Other languages
German (de)
French (fr)
Other versions
EP1786712A1 (en
Inventor
Mauro Spiga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soudronic AG
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Soudronic AG
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Filing date
Publication date
Application filed by Soudronic AG filed Critical Soudronic AG
Publication of EP1786712A1 publication Critical patent/EP1786712A1/en
Application granted granted Critical
Publication of EP1786712B1 publication Critical patent/EP1786712B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
    • B65H29/30—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from magnetic holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
    • B65H29/32—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from pneumatic, e.g. suction, carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/20—Continuous handling processes
    • B65H2301/23—Continuous handling processes of multiple materials in parallel to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/34—Modifying, selecting, changing direction of displacement
    • B65H2301/342—Modifying, selecting, changing direction of displacement with change of plane of displacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473—Belts, endless moving elements on which the material is in surface contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473—Belts, endless moving elements on which the material is in surface contact
    • B65H2301/44734—Belts, endless moving elements on which the material is in surface contact overhead, i.e. hanging material ba attraction forces, e.g. suction, magnetic forces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6476—Including means to move work from one tool station to another

Definitions

  • the invention relates to a method for holding metal strips, which are delivered from a cutting device at the same time, held substantially in its discharge position and passed by dropping to a conveyor. Furthermore, the invention relates to a corresponding device and an angle shear, in which the method or the device is provided.
  • EP-A-0 426 259 shows the laying of cut sheets on a first magnetic conveying means and the transfer to a second magnetic conveying means which holds the sheets at the top and promotes and releases controlled.
  • US-A-3 608 895 shows the acquisition of horizontally conveyed floor panels by a second conveyor, which holds the floor panels from above by negative pressure. Such a procedure is for paper, cardboard and metal foils in US-A-3,500,999 and for biscuits in US-A-3,946,626 shown.
  • US 3,500,999 discloses a method and apparatus for conveying sheet-like elements. These elements are cut by means of rolling knives and then get into a conveyor with rollers and a suction belt. The elements are held under vacuum during conveyance through the suction belt until dropped in stacking devices.
  • the invention has for its object to avoid these disadvantages.
  • the strips are magnetically held at their top eliminates the need to align the bracket exactly parallel to the sheet metal strip edges; it is sufficient if the holder engages the respective sheet metal surface so that the respective sheet - until dropping - essentially in its discharge position in which it has leaked from the cutting device, can be held.
  • the holding is effected by magnetic rails, along which the respective metal strip slides during the discharge from the cutting device. The dropping then takes place in a simple manner by deactivating the electromagnetic adherence and / or by mechanical action on the Sheet for overcoming a permanent magnetic holding force.
  • the holding is electromagnetic. It is preferred if the magnetic rails have a coating which reduces the sliding friction for the metal sheet. A stationary holder is therefore preferred, on which the respective metal strip moves along. This results in a simple and robust mount without a special motion drive.
  • FIG. 1 shows different views of an angle shear 1 shown greatly simplified, by means of which metal sheets 20 in a first cutting device 2, which usually has a plurality of spaced pairs of rolling blades, are cut into sheet metal strips 21,22,23 and 24.
  • FIG. 2 is simplified, as a metal sheet 20 which has been lifted from a sheet-metal stack 4, through the Roll knife cutting device 2 passes through and is discharged as a metal strip 21 through the delivery rollers 16 and 17 in the direction of arrow A.
  • FIG. 1 is a frontal view of the cutting device 2 can be seen, the dispensing direction according to arrow A perpendicular to the drawing plane and the viewer runs out. Accordingly, in FIG.
  • the present invention now relates to the holding of the individual metal strips, or a holding device 10 ', which simultaneously leave the first cutting device 2 and are held above this before their delivery to the conveyor 14 so that there is an orderly delivery to the conveyor.
  • the metal strips are according to the prior art, for which reference may again be made to the said Italian document, held by specially shaped pivot rods, on which rest the metal strips with the edge regions of their underside. As already explained in the introduction, these rotating rods are rotated in order to cause the sheet metal strips to fall down on a support of the conveying means, from which deposit the sheet metal strips are gripped by the conveying means and conveyed to the cutting device 3.
  • the present invention relates to receiving and holding the metal strips 21-24 during and after the delivery of the metal strips by the cutting device.
  • auxiliary elements are provided which support the metal strips, for example, the front side, on its underside and in each case be pulled away for dropping the metal strip.
  • the holding at the top of the sheets is magnetic.
  • the holding is performed by magnetic rollers on which the respective sheet moves along when it leaves the cutting device 2.
  • FIG. 2 It can be seen how the sheet 21 in the direction of arrow A leaves the cutter and moves along the rollers 6a-6e, wherein the sheet in the position of FIG.
  • the rollers 6a, 6b and 6c has already reached. Due to the magnetic action of the magnetic rollers, the sheet is held by the rollers in its dispensing position above the tray 13 of the conveyor. If permanent magnetic rollers are used, then the dropping of the respective metal sheet 21-24 in the direction of the arrow B by the respective sets of rollers 6-9, which in the frontal view of FIG FIG. 1 can be seen, be effected by a mechanical overcoming the holding force of the rollers.
  • rollers are moved upward in the only indicated roller carrier 5, so that the rollers are lifted from the respective sheet, which is retained by the roller carrier 5 or arranged non-magnetic projections so that it can not join the movement of the rollers 5 upwards , There may also be an extending element which pushes the respective sheet away from the rollers.
  • the rollers are electromagnetically activated, so that by turning on the current generating the magnetic field, a magnetic holding the metal strip on the rollers can be effected and by turning off the current dropping of the sheet is caused to the support 13 out.
  • this is represented by a corresponding electromagnetic arrangement 11, which is controlled by the controller 27 of the angle shear 1.
  • the other sheets 22-24 are held by corresponding sets of rollers 7, 8 and 9, so that all sheets leaving the cutting unit 2 are held in the corresponding manner above the tray 13 and, if necessary, the further feed is dropped.
  • the rollers are driven only by the metal sheet traveling along them, which is conveyed by the cutting device or possibly driven output rollers 16, 17.
  • the rollers can also be driven by a motor, which may apply to all or only individual roles.
  • FIG. 3 shows a further embodiment as a holding device 10 ', in which only a side view of the angle shear similar to that of FIG. 2 and wherein like numerals denote like elements.
  • a magnetizable rail 30 is provided, over which the respective sheet slides when it is discharged from the cutting device 2 and which rail holds the sheet, as long as it is magnetized by the solenoid assembly accordingly.
  • the sheet 21 can be pushed without great frictional resistance with its top on the rail 30, which is arranged for example in a rail bracket 35, the rail 30 is provided at its contact surface for the sheet with a friction-reducing coating, for example with a plastic coating.
  • the preferred embodiment of the conveyor 14 is that which is shown in the said Italian document and by a sloping chain and through the storage plane 13 penetrating different high driver causes a separation of the tray 13 closely spaced sheets.
  • it can be used instead of this conveyor any other known in the art funding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Discharge By Other Means (AREA)
  • Registering Or Overturning Sheets (AREA)

Description

Hintergrundbackground

Die Erfindung betrifft ein Verfahren zum Halten von Blechstreifen, die aus einer Schneideinrichtung gleichzeitig abgegeben, im wesentlichen in ihrer Abgabelage gehalten und durch Fallenlassen an eine Fördereinrichtung weitergegeben werden. Weiter betrifft die Erfindung eine entsprechende Vorrichtung sowie eine Winkelschere, bei der das Verfahren bzw. die Vorrichtung vorgesehen ist.The invention relates to a method for holding metal strips, which are delivered from a cutting device at the same time, held substantially in its discharge position and passed by dropping to a conveyor. Furthermore, the invention relates to a corresponding device and an angle shear, in which the method or the device is provided.

Stand der TechnikState of the art

Beim Schneiden von Blechtafeln zu Blechstreifen mit rotierenden Messern werden die Blechstreifen praktisch aneinanderliegend und gleichzeitig aus der Schneideinrichtung abgegeben. Um ein geordnetes Weitergeben an eine Fördereinrichtung zu erzielen, ist es gemäss IT-A-1 053 021 bekannt, die Blechstreifen mittels Drehstangen zu halten, an denen die Blechstreifen mit ihren Unterseiten randseitig und im wesentlichen ihrer Abgabestellung aus den Rollenmessern entsprechend, wenn auch leicht geneigt, gehalten werden. Durch das Drehen der Stangen fallen die Blechstreifen dann auf die Ablageebene eines Fördermittels, das schräg nach oben laufende Ketten mit Mitnehmern aufweist, die von unten her die Ablageebene durchstossen und die die dicht nebeneinander liegenden Blechstreifen beabstandet in das zweite Rollenmesser einer Winkelschere fördern. Die Drehstangen müssen sehr genau parallel ausgerichtet sein, um die Blechstreifen halten und freigeben zu können. Bei jeder Einstellung der Streifenbreite müssen auch die Drehstangen eingestellt und dabei muss ihre Parallelität geprüft und justiert werden, was aufwendig ist.When cutting metal sheets to metal strips with rotating knives, the metal strips are practically adjacent to each other and simultaneously discharged from the cutter. To achieve an orderly passing to a conveyor, it is according to IT-A-1 053 021 known to hold the metal strips by means of rotating rods, where the metal strips with their undersides edge and substantially their delivery position from the roller blades according to, if slightly inclined, held. By turning the rods, the metal strips then fall to the storage level of a conveyor which has obliquely upwardly running chains with drivers, which penetrate from below the storage level and promote the closely spaced metal strips spaced in the second roller blade angle shears. The turnstiles must be aligned very exactly parallel to hold the metal strips and release. With each adjustment of the strip width and the rotating rods must be adjusted and their parallelism must be checked and adjusted, which is expensive.

EP-A-0 426 259 zeigt das Ablegen von geschnittenen Blechen auf ein erstes magnetisches Fördermittel und die Übergabe an ein zweites magnetisches Fördermittel, das die Bleche an deren Oberseite hält und fördert und gesteuert loslässt. US-A-3 608 895 zeigt die Übernahme von liegend geförderten Bodenplatten durch ein zweites Fördermittel, das die Bodenplatten von oben her durch Unterdruck hält. Ein solches Vorgehen ist für Papier, Karton und Metallfolien in US-A-3 500 999 und für Kekse in US-A-3 946 626 gezeigt. EP-A-0 426 259 shows the laying of cut sheets on a first magnetic conveying means and the transfer to a second magnetic conveying means which holds the sheets at the top and promotes and releases controlled. US-A-3 608 895 shows the acquisition of horizontally conveyed floor panels by a second conveyor, which holds the floor panels from above by negative pressure. Such a procedure is for paper, cardboard and metal foils in US-A-3,500,999 and for biscuits in US-A-3,946,626 shown.

US 3 500 999 offenbart ein Verfahren und eine Vorrichtung zur Förderung von blechartigen Elementen. Dabei werden diese Elemente mittels Rollmessern geschnitten und gelangen anschliessend in eine Fördereinrichtung mit Rollen und einem Saugband. Die Elemente werden während der Förderung durch das Saugband mittels Unterdruck festgehalten, bis sie in Stapeleinrichtungen fallengelassen werden. US 3,500,999 discloses a method and apparatus for conveying sheet-like elements. These elements are cut by means of rolling knives and then get into a conveyor with rollers and a suction belt. The elements are held under vacuum during conveyance through the suction belt until dropped in stacking devices.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde diese Nachteile zu vermeiden.The invention has for its object to avoid these disadvantages.

Dies wird bei dem eingangs genannten Verfahren mit den Merkmalen des Anspruchs 1 erzielt.This is achieved in the method mentioned with the features of claim 1.

Dadurch, dass die Streifen an ihrer Oberseite magnetisch gehalten werden, entfällt die Notwendigkeit die Halterung genau parallel mit den Blechstreifenkanten auszurichten; es genügt, wenn die Halterung an der jeweiligen Blechoberfläche so angreift, dass das jeweilige Blech - bis zum Fallenlassen - im wesentlichen in seiner Abgabelage, in der es aus der Schneideinrichtung ausgetreten ist, festgehalten werden kann. Dabei erfolgt das Halten durch magnetische Schienen, an denen der jeweilige Blechstreifen bei der Abgabe aus der Schneideinrichtung entlanggleitet. Das Fallenlassen erfolgt dann auf einfache Weise durch das Deaktivieren des elektromagnetischen Festhaltens und/oder durch mechanische Einwirkung auf das Blech zur Überwindung einer permanentmagnetischen Festhaltekraft.The fact that the strips are magnetically held at their top eliminates the need to align the bracket exactly parallel to the sheet metal strip edges; it is sufficient if the holder engages the respective sheet metal surface so that the respective sheet - until dropping - essentially in its discharge position in which it has leaked from the cutting device, can be held. In this case, the holding is effected by magnetic rails, along which the respective metal strip slides during the discharge from the cutting device. The dropping then takes place in a simple manner by deactivating the electromagnetic adherence and / or by mechanical action on the Sheet for overcoming a permanent magnetic holding force.

Vorzugsweise erfolgt das Halten elektromagnetisch. Es ist bevorzugt, wenn die magnetischen Schienen eine die Gleitreibung für das Blech herabsetzenden Beschichtung aufweisen. Bevorzugt ist somit eine stationäre Halterung, an der sich der jeweilige Blechstreifen entlang bewegt. Dies ergibt eine einfache und robuste Halterung ohne einen speziellen Bewegungsantrieb.Preferably, the holding is electromagnetic. It is preferred if the magnetic rails have a coating which reduces the sliding friction for the metal sheet. A stationary holder is therefore preferred, on which the respective metal strip moves along. This results in a simple and robust mount without a special motion drive.

Die erwähnten Vorteile werden weiter mit der Haltevorrichtung für eine Winkelschere gemäss Anspruch 5 und mit der Winkelschere gemäss Anspruch 9 erzielt.The mentioned advantages are further achieved with the holding device for an angle shear according to claim 5 and with the angle shear according to claim 9.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Weitere Ausgestaltungen, Vorteile und Anwendungen der Erfindung ergeben sich aus den abhängigen Ansprüchen und aus der nun folgenden Beschreibung anhand der Figuren. Dabei zeigen:

  • Figur 1 schematisch in Ansicht von vorne auf die erste Schneideinrichtung eine erste, nicht erfindungsgemässe Ausführungsform;
  • Figur 2 die Ausführungsform von Figur 1 in Seitenansicht;
  • Figur 3 in Seitenansicht eine weitere Ausführungsform gemäss der Erfindung.
Further embodiments, advantages and applications of the invention will become apparent from the dependent claims and from the following description with reference to FIGS. Showing:
  • FIG. 1 schematically in front view of the first cutting device, a first embodiment not according to the invention;
  • FIG. 2 the embodiment of FIG. 1 in side view;
  • FIG. 3 in side view a further embodiment according to the invention.

Wege zur Ausführung der ErfindungWays to carry out the invention

Die Figuren 1 und 2 zeigen verschiedene Ansichten einer stark vereinfacht dargestellten Winkelschere 1, mittels welcher Blechtafeln 20 in einer ersten Schneideinrichtung 2, welche in der Regel mehrere beabstandete Rollmesserpaare aufweist, zu Blechstreifen 21,22,23 und 24 geschnitten werden. In Figur 2 ist vereinfacht ersichtlich, wie eine Blechtafel 20, die von einem Blechtafelstapel 4 abgehoben worden ist, durch die Rollmesserschneideeinrichtung 2 hindurch verläuft und als Blechstreifen 21 durch die Abgaberollen 16 und 17 in Richtung des Pfeiles A abgegeben wird. In Figur 1 ist eine Frontalansicht auf die Schneideinrichtung 2 ersichtlich, wobei die Abgaberichtung gemäss Pfeil A senkrecht zur Zeichnungsebene und zum Betrachter hin verläuft. Entsprechend ist in Figur 1 ersichtlich, dass aus der Blechtafel die vier Blechstreifen 21,22,23 und 24 geschnitten worden sind. Diese Anzahl und die Grösse der Blechstreifen ist natürlich nur als Beispiel zu verstehen und hängt von der Anzahl und vom Abstand der Rollmesserpaare der Schneideinrichtung 2 ab. Gemäss der bevorzugten Verwendung der Haltevorrichtung bei einer Winkelschere 1 werden nun diese Blechstreifen einer weiteren Schneideinrichtung 3 zugeführt, welche in der Regel im rechten Winkel zu der Schneideinrichtung 2 angeordnet ist, worin die Blechstreifen 21-24 nacheinander in kleinere Blechabschnitte 40 geschnitten werden. Eine Fördereinrichtung 14 fördert dabei die Blechstreifen 21-24 von der Ablage 13 zur Schneideinrichtung 3. Solche Winkelscheren und auch die entsprechende Fördereinrichtung ist dem Fachmann wohl bekannt und muss hier nicht weiter erläutert werden. Insbesondere kann auf die italienische Schrift IT-A-1 053 021 verwiesen werden, worin dem Fachmann eine Winkelschere der bisher erläuterten Art und eine Fördereinrichtung mit schräg nach oben hin verlaufenden Förderketten und verschieden hohen Mitnehmern gezeigt wird, welche bevorzugterweise auch bei einer Winkelschere mit der noch zu erläuternden Haltevorrichtung gemäss der vorliegenden Erfindung verwendet wird.The Figures 1 and 2 show different views of an angle shear 1 shown greatly simplified, by means of which metal sheets 20 in a first cutting device 2, which usually has a plurality of spaced pairs of rolling blades, are cut into sheet metal strips 21,22,23 and 24. In FIG. 2 is simplified, as a metal sheet 20 which has been lifted from a sheet-metal stack 4, through the Roll knife cutting device 2 passes through and is discharged as a metal strip 21 through the delivery rollers 16 and 17 in the direction of arrow A. In FIG. 1 is a frontal view of the cutting device 2 can be seen, the dispensing direction according to arrow A perpendicular to the drawing plane and the viewer runs out. Accordingly, in FIG. 1 it can be seen that the four metal strips 21, 22, 23 and 24 have been cut from the metal sheet. Of course, this number and the size of the sheet metal strips is only to be understood as an example and depends on the number and the distance of the rolling cutter pairs of the cutting device 2. According to the preferred use of the holding device with an angle shears 1, these metal strips are then fed to a further cutting device 3, which is generally arranged at right angles to the cutting device 2, wherein the metal strips 21-24 are successively cut into smaller sheet metal sections 40. A conveyor 14 thereby promotes the metal strips 21-24 of the tray 13 to the cutting device 3. Such angle shears and the corresponding conveyor is well known to those skilled and need not be further explained here. In particular, on the Italian writing IT-A-1 053 021 are referred to, in which the person skilled in an angle shear of the type described so far and a conveyor with obliquely upwardly extending conveyor chains and different high drivers is shown, which is preferably also used in an angle shear with the still to be explained holding device according to the present invention.

Die vorliegende Erfindung betrifft nun das Halten der einzelnen Blechstreifen, bzw. eine Haltevorrichtung 10', welche gleichzeitig die erste Schneideinrichtung 2 verlassen und vor ihrer Abgabe an die Fördereinrichtung 14 oberhalb dieser festgehalten werden, damit sich eine geordnete Abgabe an die Fördereinrichtung ergibt. Die Blechstreifen werden nach Stand der Technik, wozu erneut auf die genannte italienische Schrift verwiesen werden kann, von speziell geformten Drehstangen gehalten, auf welchen die Blechstreifen mit den Randbereichen ihrer Unterseite aufliegen. Wie bereits einleitend erläutert, werden diese Drehstangen gedreht, um ein Herabfallen der Blechstreifen auf eine Ablage des Fördermittels zu bewirken, von welcher Ablage die Blechstreifen durch das Fördermittel ergriffen und zur Schneideinrichtung 3 gefördert werden. Die vorliegende Erfindung betrifft das Aufnehmen und Halten der Blechstreifen 21-24 bei und nach der Abgabe der Blechstreifen durch die Schneideinrichtung. Dazu erfolgt gemäss der Erfindung ein Halten der Blechstreifen an ihrer Oberseite und vorzugsweise nur an ihrer Oberseite, so dass keine Halteelemente an der Unterseite auf die Blechstreifen einwirken. Es könnte aber auch so sein, dass zusätzlich zu dem Halten von oben noch Hilfselemente vorgesehen sind, welche die Blechstreifen, z.B. stirnseitig, an ihrer Unterseite zusätzlich stützen und für das Fallenlassen der Blechstreifen jeweils weggezogen werden. Das Halten an der Oberseite der Bleche erfolgt magnetisch. Bei einer ersten, nicht erfindungsgemässen Ausführungsform der Haltevorrichtung 10, erfolgt das Halten durch magnetische Rollen, an welchen das jeweilige Blech entlangfährt, wenn es die Schneideinrichtung 2 verlässt. In der Figur 2 ist ersichtlich, wie das Blech 21 in Richtung des Pfeiles A die Schneideinrichtung verlässt und entlang der Rollen 6a-6e fährt, wobei das Blech in der Stellung von Figur 2 die Rollen 6a, 6b und 6c bereits erreicht hat. Aufgrund der Magnetwirkung der magnetischen Rollen wird das Blech von den Rollen in seiner Abgabeposition über der Ablage 13 des Fördermittels gehalten. Werden Permanentmagnetische Rollen verwendet, so muss das Fallenlassen des jeweiligen Bleches 21-24 in Richtung des Pfeiles B durch die jeweiligen Rollensätze 6-9, welche in der Frontalansicht von Figur 1 ersichtlich sind, durch ein mechanisches Überwinden der Haltekraft der Rollen bewirkt werden. So könnten z.B. die Rollen nach oben in den nur angedeuteten Rollenträger 5 verfahren werden, so dass die Rollen vom jeweiligen Blech abgehoben werden, welches vom Rollenträger 5 oder daran angeordneten nichtmagnetischen Vorsprüngen zurückgehalten wird, so dass es die Bewegung der Rollen 5 nach oben hin nicht mitmachen kann. Es kann auch ein ausfahrendes Element vorhanden sein, welches das jeweilige Blech von den Rollen nach unten hin wegdrückt. Die Rollen sind elektromagnetisch aktivierbar, so dass durch ein Einschalten des das Magnetfeld erzeugenden Stromes ein magnetisches Halten der Blechstreifen an den Rollen bewirkt werden kann und durch Ausschalten des Stromes ein Herabfallen des Bleches zu der Auflage 13 hin bewirkt wird. In den Figuren 1 und 2 ist dies durch eine entsprechende elektromagnetische Anordnung 11 dargestellt, welche durch die Steuerung 27 der Winkelschere 1 gesteuert wird. Die entsprechende Ausgestaltung einer solchen elektromagnetischen Rollenanordnung ist für den Fachmann ohne weiteres ersichtlich und muss hier nicht genauer erläutert werden. Wie bereits erwähnt werden auch die anderen Bleche 22-24 von entsprechenden Rollensätzen 7,8 und 9 gehalten, so dass alle Bleche, welche die Schneideinrichtung 2 verlassen, auf die entsprechende Weise oberhalb der Ablage 13 festgehalten werden und bei Bedarf der Weiterförderung fallengelassen werden. Die Rollen werden in der Regel nur durch das an ihnen entlang fahrende Blech, das von der Schneideinrichtung oder allenfalls angetriebenen Ausgaberollen 16, 17 gefördert wird, angetrieben. Die Rollen können aber auch motorisch angetrieben sein, was für alle oder nur einzelne Rollen zutreffen kann.The present invention now relates to the holding of the individual metal strips, or a holding device 10 ', which simultaneously leave the first cutting device 2 and are held above this before their delivery to the conveyor 14 so that there is an orderly delivery to the conveyor. The metal strips are according to the prior art, for which reference may again be made to the said Italian document, held by specially shaped pivot rods, on which rest the metal strips with the edge regions of their underside. As already explained in the introduction, these rotating rods are rotated in order to cause the sheet metal strips to fall down on a support of the conveying means, from which deposit the sheet metal strips are gripped by the conveying means and conveyed to the cutting device 3. The present invention relates to receiving and holding the metal strips 21-24 during and after the delivery of the metal strips by the cutting device. For this purpose, according to the invention, a holding of the metal strip on its upper side and preferably only on its upper side, so that no holding elements act on the underside of the metal strip. But it could also be so that in addition to the holding from top even auxiliary elements are provided which support the metal strips, for example, the front side, on its underside and in each case be pulled away for dropping the metal strip. The holding at the top of the sheets is magnetic. In a first, non-inventive embodiment of the holding device 10, the holding is performed by magnetic rollers on which the respective sheet moves along when it leaves the cutting device 2. In the FIG. 2 It can be seen how the sheet 21 in the direction of arrow A leaves the cutter and moves along the rollers 6a-6e, wherein the sheet in the position of FIG. 2 the rollers 6a, 6b and 6c has already reached. Due to the magnetic action of the magnetic rollers, the sheet is held by the rollers in its dispensing position above the tray 13 of the conveyor. If permanent magnetic rollers are used, then the dropping of the respective metal sheet 21-24 in the direction of the arrow B by the respective sets of rollers 6-9, which in the frontal view of FIG FIG. 1 can be seen, be effected by a mechanical overcoming the holding force of the rollers. So could For example, the rollers are moved upward in the only indicated roller carrier 5, so that the rollers are lifted from the respective sheet, which is retained by the roller carrier 5 or arranged non-magnetic projections so that it can not join the movement of the rollers 5 upwards , There may also be an extending element which pushes the respective sheet away from the rollers. The rollers are electromagnetically activated, so that by turning on the current generating the magnetic field, a magnetic holding the metal strip on the rollers can be effected and by turning off the current dropping of the sheet is caused to the support 13 out. In the Figures 1 and 2 this is represented by a corresponding electromagnetic arrangement 11, which is controlled by the controller 27 of the angle shear 1. The corresponding embodiment of such an electromagnetic roller arrangement will be readily apparent to those skilled in the art and need not be explained in detail here. As already mentioned, the other sheets 22-24 are held by corresponding sets of rollers 7, 8 and 9, so that all sheets leaving the cutting unit 2 are held in the corresponding manner above the tray 13 and, if necessary, the further feed is dropped. As a rule, the rollers are driven only by the metal sheet traveling along them, which is conveyed by the cutting device or possibly driven output rollers 16, 17. The rollers can also be driven by a motor, which may apply to all or only individual roles.

Figur 3 zeigt eine weitere Ausführungsform als Haltevorrichtung 10', bei welcher nur noch eine Seitenansicht der Winkelschere ähnlich derjenigen von Figur 2 gezeigt ist, und worin gleiche Bezugszeichen gleiche Elemente bezeichnen. Anstelle jedes nicht erfindungsgemässen Rollensatzes ist hier eine magnetisierbare Schiene 30 vorgesehen, über welche das jeweilige Blech gleitet, wenn es von der Schneideinrichtung 2 abgegeben wird und welche Schiene das Blech hält, solange sie durch die Elektromagnetanordnung entsprechend magnetisiert ist. Damit das Blech 21 ohne grossen Reibungswiderstand mit seiner Oberseite über die Schiene 30 gestossen werden kann, welche z.B. in einer Schienenhalterung 35 angeordnet ist, ist die Schiene 30 an ihrer Kontaktfläche für das Blech mit einer reibungsvermindernden Beschichtung versehen, z.B. mit einer Kunststoffbeschichtung. FIG. 3 shows a further embodiment as a holding device 10 ', in which only a side view of the angle shear similar to that of FIG. 2 and wherein like numerals denote like elements. Instead of each roller set not according to the invention here is a magnetizable rail 30 is provided, over which the respective sheet slides when it is discharged from the cutting device 2 and which rail holds the sheet, as long as it is magnetized by the solenoid assembly accordingly. Thus, the sheet 21 can be pushed without great frictional resistance with its top on the rail 30, which is arranged for example in a rail bracket 35, the rail 30 is provided at its contact surface for the sheet with a friction-reducing coating, for example with a plastic coating.

Die bevorzugte Ausführung des Fördermittels 14 ist diejenige, welche in der genannten italienischen Schrift gezeigt ist und durch einen schrägen Kettenverlauf und durch die Ablageebene 13 hindurchstossende verschieden hohe Mitnehmer eine Vereinzelung der auf der Ablage 13 dicht beieinanderliegenden Bleche bewirkt. Es kann aber anstelle dieses Fördermittels ein beliebiges anderes, dem Fachmann bekanntes Fördermittel verwendet werden.The preferred embodiment of the conveyor 14 is that which is shown in the said Italian document and by a sloping chain and through the storage plane 13 penetrating different high driver causes a separation of the tray 13 closely spaced sheets. However, it can be used instead of this conveyor any other known in the art funding.

Während in der vorliegenden Anmeldung bevorzugte Ausführungen der Erfindung beschrieben sind, ist klar darauf hinzuweisen, dass die Erfindung nicht auf diese beschränkt ist und in auch anderer Weise innerhalb des Umfangs der folgenden Ansprüche ausgeführt werden kann.While preferred embodiments of the invention are described in the present application, it is to be understood that the invention is not limited thereto and may be embodied otherwise within the scope of the following claims.

Claims (9)

  1. Method for holding sheet metal strips (21-24) which are simultaneously supplied from a cutting device (2), held substantially in their supply position and transferred to a transport device (14) by dropping them, wherein the metal sheet strips are held magnetically, until they drop, on their upper side, and particularly only on their upper side, substantially in their supply position in which they came out of the cutting device characterized in that the holding is carried out by magnetic rails (30) along which the respective metal sheet strip glides during the supply from the cutting device.
  2. Method according to claim 1, characterized in that the metal sheet strips are held electromagnetically and/or permanent-magnetically.
  3. Method according to claim 1 or 2, characterized in that the metal sheet strips are dropped by deactivating the electrically generated magnetic field or by mechanically acting upon the metal sheet strips in order to overcome the permanent-magnetic magnetic field.
  4. Method according to one of the claims 1 to 3, characterized in that the rails are provided with a coating decreasing the slide friction of the metal sheet strip at the rail.
  5. Holding device (10') for metal sheet shears, provided and adapted to hold at the output of a cutting device (2) a plurality of metal sheet strips (21-24) which are simultaneously provided by the cutting device substantially in their supply position and to transfer the metal sheet strips by dropping them, wherein the holding device (10') has holding means (11, 30, 35) by means of which the metal sheet strips are held magnetically, until they drop, on their upper side, and particularly only on their upper side, substantially in their supply position in which they came out of the cutting device characterized in that the holding is carried out by magnetic rails (30) along which the respective metal sheet strip glides during the supply from the cutting device.
  6. Holding device according to claim 5, characterized in that the metal sheet strips are held electromagnetically and/or permanent-magnetically.
  7. Holding device according to claim 5 or 6, characterized in that the metal sheet stripes are dropped by deactivating the electrically generated magnetic field or by mechanically acting upon the metal sheet strips in order to overcome the permanent-magnetic magnetic field.
  8. Holding device according to one of the claims 5 to 7, characterized in that the rails are provided with a coating decreasing the slide friction of the metal sheet strip at the rail.
  9. Angle shears (1) with a first cutting device (2) and a second cutting device (3) and with a holding device (10') according to one of the claims 5 to 8 arranged between the cutting devices, which supplies the metal sheet strips (21-24) cut by the first cutting device (2) to a transport device transporting the metal sheet strips to the second cutting device.
EP05773773A 2004-09-06 2005-08-26 Method and device for holding sheet metal strips, and angular scissors Not-in-force EP1786712B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01476/04A CH711472B1 (en) 2004-09-06 2004-09-06 <TITLE> A device for holding sheet metal strips and angle shears with such a sheet.
PCT/CH2005/000498 WO2006026874A1 (en) 2004-09-06 2005-08-26 Method and device for holding sheet metal strips, and angular scissors

Publications (2)

Publication Number Publication Date
EP1786712A1 EP1786712A1 (en) 2007-05-23
EP1786712B1 true EP1786712B1 (en) 2012-10-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05773773A Not-in-force EP1786712B1 (en) 2004-09-06 2005-08-26 Method and device for holding sheet metal strips, and angular scissors

Country Status (7)

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US (1) US20080022819A1 (en)
EP (1) EP1786712B1 (en)
BR (1) BRPI0514942A (en)
CH (1) CH711472B1 (en)
ES (1) ES2391898T3 (en)
PT (1) PT1786712E (en)
WO (1) WO2006026874A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341135A (en) * 1979-08-04 1982-07-27 G. Siempelkamp Gmbh & Co. Method of and apparatus for cutting a plate into small sections

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
FR1201806A (en) * 1958-08-25 1960-01-06 Salzgitter Ind Ges M B H Magnetic roller device for transporting and stacking sheets
DE1511266A1 (en) * 1966-07-22 1969-07-24 Paul Lippke Method and device for conveying and depositing or for conveying and sorting sheets of paper, cardboard, metal foils or the like.
US3608895A (en) * 1969-10-02 1971-09-28 Gaf Corp Electropneumatic flat product shuffling and packaging system
US3946626A (en) * 1974-03-29 1976-03-30 Nabisco Inc. Conveyor system for transferring rigid sheets between right angled conveyors
IT1053021B (en) * 1975-11-18 1981-08-31 Ocsam Costruzioni Meccaniche S CONVEYOR TO CUTTING SHEET STRIP CUTTING TOOL TO FORM METAL BOXES
DE3702174C1 (en) * 1987-01-26 1988-05-26 Erwin Jenkner Method and device for removing plate parts separated in a panel saw along a parting plane from a workpiece plate
US5036736A (en) * 1990-02-12 1991-08-06 Hillock Ronald A Method and apparatus for mar free handling of sheet steel
NL9000813A (en) * 1990-04-06 1991-11-01 Walker Hagou Bv DEVICE FOR TRANSPORTING AND LAYING OUT OF ARTICLES.
DE4417415C1 (en) * 1994-05-18 1995-10-05 Windmoeller & Hoelscher Device to turn workpieces
JP3930854B2 (en) * 2003-12-22 2007-06-13 本田技研工業株式会社 Magnet adsorption type conveyor system and operation setting method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341135A (en) * 1979-08-04 1982-07-27 G. Siempelkamp Gmbh & Co. Method of and apparatus for cutting a plate into small sections

Also Published As

Publication number Publication date
PT1786712E (en) 2012-11-19
CH711472B1 (en) 2017-03-15
BRPI0514942A (en) 2008-07-01
WO2006026874A1 (en) 2006-03-16
ES2391898T3 (en) 2012-11-30
EP1786712A1 (en) 2007-05-23
US20080022819A1 (en) 2008-01-31

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