EP0252084B1 - Fabrication system for the automatic working of metal workpieces - Google Patents
Fabrication system for the automatic working of metal workpieces Download PDFInfo
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- EP0252084B1 EP0252084B1 EP86901837A EP86901837A EP0252084B1 EP 0252084 B1 EP0252084 B1 EP 0252084B1 EP 86901837 A EP86901837 A EP 86901837A EP 86901837 A EP86901837 A EP 86901837A EP 0252084 B1 EP0252084 B1 EP 0252084B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/20—Storage arrangements; Piling or unpiling
- B21D43/24—Devices for removing sheets from a stack
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- the invention relates to a production system for the automatic processing of sheets stacked in pallets, in which a loading device, a shelf-shaped pallet store and a shelf conveyor are arranged in front of a processing machine.
- the loading devices are stationary systems that are upstream of the processing machine and that are approached by floor-mounted transport vehicles.
- some plants e.g. B. those from " workshop and operation", Figure 3, paragraph 3
- not only individual sheets are changed, but even entire pallets from the trolley to the loading device of the processing machine.
- the known prior art has the disadvantage that the conveying, separating and loading processes always have to be carried out one after the other and thus overall take a relatively long time. This also requires time-consuming adjustment processes when positioning the often multi-dimensionally movable transport trolleys relative to the loading stations. The return of the fully or partially emptied pallets transferred to the loading device also poses a problem.
- the object of the invention is to design automatic production systems in such a way that the metal sheets can be fed to the processing machines more quickly and in a simpler manner.
- the invention provides, according to claim 1, to couple the rack conveyor and the separating and loading device in one device.
- This enables a time overlap of the individual processes and thus a reduction in the set-up times when changing the workpiece.
- the shelf conveyor device guided on the pallet store can be positioned particularly easily and quickly in relation to both the pallet store and the processing machine.
- the pallet store is supplied with new loaded pallets from the other side and disposed of from empty pallets.
- the pallet store also functions as a time-saving intermediate or buffer store in front of a large central warehouse.
- the pallet store is preferably constructed like a tower, but can also consist of several columns.
- the separating and loading device has vertically and horizontally movably guided suction heads which lift the uppermost sheet in the stack and feed it to the processing machine.
- the conveyor on the side facing the processing machine has a swiveling sheet-metal support table with slide-promoting elements, on which the top sheet in each case is moved forward until the table can be swiveled into the processing machine automatically by pivoting the table.
- magnets are arranged on both sides next to the stack near its corners facing the processing machine, in such a way that the plus and minus poles are held at a distance above one another in a magnet holder and face the stack.
- the magnets spread out the sheets in the stack, the steel sheets shifting relative to one another along the conveying direction, in such a way that the top sheet shifts the farthest in the rearward direction from the stack originally formed.
- the suction heads exert a downward movement on the rear sheet metal area before the feed movement for inserting the top sheet into the processing machine takes place.
- the invention proposes to provide the suction heads with a vertically acting vibration drive. It has been found that under this repeated vertical impulse load, the sheets are loosened from one another, i. H. a decrease in their adhesion takes place.
- a preferred exemplary embodiment of the invention additionally provides for the arrangement of a measuring device for sheet thicknesses in the transition region between the conveying device and the processing machine, it being particularly advisable to design this measuring device in the form of an ultrasound measuring device.
- a measuring device has the property of determining differences in the thickness of sheet metal and even measuring air layers between sheet metal layers.
- FIG. 1 symbolically shows a processing machine (1) which can be designed, for example, in the form of a punch, scissors, press or the like for sheet metal processing.
- a feed plane (2) for the workpieces to be machined is arranged upstream of this processing machine (1).
- it is a table with locally arranged sliding elements on which the workpiece, in particular a sheet metal, can be moved forward with little friction.
- the output level (3) is provided in the exemplary embodiment behind the processing machine (1). It can also be arranged on the side of this processing machine (1).
- a pallet store (4) in the form of a high rack, in the compartments (5) of which pallets (6) with sheet metal stacks (7) arranged thereon are inserted in any way.
- the space (8) between this pallet store (4) and the processing machine (1) is occupied by a conveyor (9) which can be moved along the height (19) of the pallet store (4). In this way, the possibility is given that the conveyor (9) can remove a pallet (6) from any compartment (5) of the pallet store (4) or insert it into this compartment.
- the conveying device (9) has a pallet changing device (10) (which is only shown symbolically because it is known in high-bay racks) and a separating and loading device (11), which will be described in detail later.
- the conveying device (9) should be able to be advanced a certain distance in the lifting direction (19) in order to pick up or deliver a pallet (6) from the pallet store (4) .
- the pallet changing device (10) is a component of the conveyor (9). In variants, however, it can also be arranged on the pallet store (4). Since they are known in principle, no constructive representation is required.
- Hang pallet changing devices or the like which in turn ensure that sheet metal stacks (7) can be moved along the guides (12, 14). It is provided, for example, that empty pallets (6) are moved along the conveying direction (17) with the aid of a driving device (27) to a loading station, where they are loaded with the sheet metal stacks (7) according to the device (12-15).
- This driving apparatus (27) can also be a lifting table Removing g erüstet, to bring the pallets (6) in the individual compartments (5).
- a spreading arrangement (18) in the form of magnets is also shown symbolically in FIG.
- These magnets (18) have the task of spreading the sheets of the sheet stack (7) apart when excited.
- the individual magnet (18) has positive and negative poles arranged one above the other and at a distance from one another on the side facing the stack (7). This is intended to achieve a magnetic flux between the poles of the magnets (18), which leads to the spreading of the sheets.
- the magnets are permanent, they must be arranged so that they can move. These can be pivoted, for example, along a horizontal axis which extends parallel to the conveying direction (17) in order to reach an ineffective position. If the sheets from the stack (7) are to be separated, the magnets (18) must, however, be moved into the position according to FIG. 1. The same effect can be brought about by linear movements of the magnets (18), for example in the vertical direction. In addition, it is possible to provide switchable electromagnets and to bring about the effect by switching.
- FIG. 2 shows, movements in different directions are assigned to the individual suction heads (20).
- the example shows, on the suction head (20), swivel-mounted suction plates (21) via the joint (22), which have the task of following the inclination of the top sheet in the sheet stack (7) and nevertheless producing an adhesive effect on this sheet.
- Dash-dot lines in Figure 2 on the right and left side of the conveyor (9) positions with different positions of the suction plate (21) are provided.
- This sheet support table (23) On the side of the conveyor (9) facing the processing machine (1) there is a sheet-metal support table (23) which has sliding-promoting elements (24) on its upper side.
- This sheet support table (23) is pivotally mounted about a joint (25) which is located above the intake plane (2) of the processing machine (1).
- This table (23) can be moved around the joint (25) by a swivel drive (26).
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Abstract
Description
Die Erfindung bezieht sich auf eine Fertigungsanlage für die automatische Bearbeitung von in Paletten gestapelten Blechen, bei der vor einer Bearbeitungsmaschine eine Beladevorrichtung, ein regalförmiger Palettenspeicher und ein Regalförderzeug angeordnet sind.The invention relates to a production system for the automatic processing of sheets stacked in pallets, in which a loading device, a shelf-shaped pallet store and a shelf conveyor are arranged in front of a processing machine.
Eine derartige Fertigungsanlage ist aus der Zeitschrift "Werkstatt und Betrieb", Bd. 117, Nr. 10, Oktober 1984, München (DE), M. Benzinger: "Flexibel automatisierte Fertigung ebener Blechteile in kleinen Stückzahlen" bekannt, von der die Erfindung als nächstliegenden Stand der Technik ausgeht. Ähnliche Anlagen zeigen auch die DE-A-2256058, DE-A-2534819 und die Zeitschrift "Machines Production", "Formage: flexibilite partout", Nr. 411, 16. Mai 1985, Boulogne (FR). In diesen vorbekannten Fertigungsanlagen sind das Regalförderzeug, die Beladeeinrichtung und die Bearbeitungsmaschine stets getrennt.Such a manufacturing system is known from the magazine "Werkstatt und Betrieb", Vol. 117, No. 10, October 1984, Munich (DE), M. Benzinger: " Flexibly automated production of flat sheet metal parts in small quantities", of which the invention is known as closest state of the art. Similar systems are also shown in DE-A-2256058, DE-A-2534819 and the magazine " Machines Production", " Formage: flexibilite partout", No. 411, May 16, 1985, Boulogne (FR). In these previously known production plants, the shelf conveyor, the loading device and the processing machine are always separate.
Die Beladeeinrichtungen sind hierbei in allen Fällen stationäre Anlagen, die der Bearbeitungsmaschine vorgeschaltet sind und die von flurgebundenen Transportwagen angefahren werden. In manchen Anlagen, z. B. derjenigen aus "Werkstatt und Betrieb", Bild 3, Abs. 3, werden hierbei nicht nur einzelne Bleche gewechselt, sondern sogar ganze Paletten vom Transportwagen an die Beladeeinrichtung der Bearbeitungsmaschine übergeben. Der bekannte Stand der Technik hat den Nachteil, dass die Förder-, die Vereinzelungs- und die Beladevorgänge stets nacheinander ablaufen müssen und damit insgesamt relativ viel Zeit brauchen. Hierbei sind auch jedesmal aufwendige Justiervorgänge bei der Positionierung der häufig mehrdimensional beweglichen Transportwagen gegenüber den Beladestationen notwendig. Ein Problem stellt auch die Rückführung der an die Beladeeinrichtung übergebenen voll- oder teilentleerten Paletten dar.In all cases, the loading devices are stationary systems that are upstream of the processing machine and that are approached by floor-mounted transport vehicles. In some plants, e.g. B. those from " workshop and operation", Figure 3, paragraph 3, not only individual sheets are changed, but even entire pallets from the trolley to the loading device of the processing machine. The known prior art has the disadvantage that the conveying, separating and loading processes always have to be carried out one after the other and thus overall take a relatively long time. This also requires time-consuming adjustment processes when positioning the often multi-dimensionally movable transport trolleys relative to the loading stations. The return of the fully or partially emptied pallets transferred to the loading device also poses a problem.
Die Erfindung hat die Aufgabe, automatische Fertigungsanlagen so zu gestalten, dass die Metallbleche den Bearbeitungsmaschinen schneller und auf einfachere Weise zugeführt werden können.The object of the invention is to design automatic production systems in such a way that the metal sheets can be fed to the processing machines more quickly and in a simpler manner.
Die Erfindung sieht nach Anspruch 1 vor, das Regalförderzeug und die Vereinzelungs- und Beladevorrichtung in einem Gerät zu koppeln, Dies ermöglicht eine zeitliche Überschneidung der einzelnen Vorgänge und damit eine Verringerung der-Rüstzeiten beim Werkstückwechsel. Darüberhinaus lässt sich das am Palettenspeicher geführte Regalfördergerät besonders einfach und schnell sowohl gegenüber dem Palettenspeicher als auch der Bearbeitungsmaschine positionieren. Der Palettenspeicher wird demgegenüber von der anderen Seite mit neuen beladenen Paletten versorgt und von geleerten Paletten entsorgt. Der Palettenspeicher fungiert dabei auch als zeitsparender Zwischen- oder Pufferspeicher vor einem grossen Zentrallager. Der Palettenspeicher ist hierzu bevorzugt turmartig aufgebaut, kann aber auch aus mehreren Säulen bestehen.The invention provides, according to claim 1, to couple the rack conveyor and the separating and loading device in one device. This enables a time overlap of the individual processes and thus a reduction in the set-up times when changing the workpiece. In addition, the shelf conveyor device guided on the pallet store can be positioned particularly easily and quickly in relation to both the pallet store and the processing machine. The pallet store, on the other hand, is supplied with new loaded pallets from the other side and disposed of from empty pallets. The pallet store also functions as a time-saving intermediate or buffer store in front of a large central warehouse. For this purpose, the pallet store is preferably constructed like a tower, but can also consist of several columns.
In den Unteransprüchen sind Ausgestaltungen des Regalfördergerätes und der Vereinzelungs-und Beladevorrichtung angegeben, die eine besonders sichere und schnelle Vereinzelung und Übergabe der gestapelten Bleche ermöglichen.In the subclaims, configurations of the rack conveyor device and the separating and loading device are specified which enable particularly safe and rapid separation and transfer of the stacked sheets.
Vorzugsweise besitzt die erfindungsgemässe Vereinzelungs- und Beladevorrichtung vertikal und horizontal beweglich geführte Saugköpfe, die das jeweils oberste, im Stapel befindliche Blech anheben und der Bearbeitungsmaschine zuführen.Preferably, the separating and loading device according to the invention has vertically and horizontally movably guided suction heads which lift the uppermost sheet in the stack and feed it to the processing machine.
Hierzu weist das Fördergerät an der der Bearbeitungsmaschine zugekehrten Seite einen schwenkbaren Blechauflagetisch mit gleitfördernden Elementen auf, auf dem das jeweils oberste Blech soweit voranbewegt wird, bis durch Abschwenken des Tisches ein durch Schwergewicht bedingtes selbsttätiges Eingleiten des Bleches in die Bearbeitungsmaschine erfolgen kann.For this purpose, the conveyor on the side facing the processing machine has a swiveling sheet-metal support table with slide-promoting elements, on which the top sheet in each case is moved forward until the table can be swiveled into the processing machine automatically by pivoting the table.
Zur Vereinzelung der Bleche in der Palette sind Magneten beidseits neben dem Stapel nahe seinen der Bearbeitungsmaschine zugewandten Ekken angeordnet, und zwar in der Weise, dass Plus-und Minuspol mit Abstand übereinander in einem Magnethalter gehalten und dem Stapel zugekehrt sind. Die Magnete bewirken an dieser Stelle ein Aufspreizen der Bleche im Stapel, wobei die Stahlbleche sich längs der Förderrichtung relativ zueinander verschieben, und zwar dergestalt, dass das oberste Blech sich am weitesten in rückwärtiger Richtung vom ursprünglich gebildeten Stapel verlagert. Hierbei üben die Saugköpfe eine abwärts gerichtete Bewegung auf den rückwärtigen Blechbereich aus, bevor die Vorschubbewegung zum Einführen des obersten Bleches in die Bearbeitungsmaschine erfolgt.To separate the sheets in the pallet, magnets are arranged on both sides next to the stack near its corners facing the processing machine, in such a way that the plus and minus poles are held at a distance above one another in a magnet holder and face the stack. At this point, the magnets spread out the sheets in the stack, the steel sheets shifting relative to one another along the conveying direction, in such a way that the top sheet shifts the farthest in the rearward direction from the stack originally formed. Here, the suction heads exert a downward movement on the rear sheet metal area before the feed movement for inserting the top sheet into the processing machine takes place.
Diese Massnahme hat zur Folge, dass das jeweils obenliegende Blech an seiner rückwärtigen Seite niedergedrückt wird, wohingegen der vordere Bereich dieses Bleches zufolge der Spreizwirkung durch die Magnete angehoben ist. In dieser Stellung lässt sich nun das oberste Blech mühelos auf den Blechauflagetisch des Fördergerätes überführen. Sobald der vordere Bereich des obersten Bleches auf diesem Blechauflagetisch aufliegt, ist es kein Problem mehr, das Blech in Richtung zur Bearbeitungsmaschine voranzubewegen und dann dem Einzug dieser Maschine zu übergeben.The result of this measure is that the sheet lying on top in each case is pressed down on its rear side, whereas the front area of this sheet is raised due to the spreading effect by the magnets. In this position, the top sheet can now be easily transferred to the sheet support table of the conveyor. As soon as the front area of the top sheet rests on this sheet support table, it is no longer a problem to advance the sheet towards the processing machine and then to hand it over to this machine.
Es gibt aber auch Fälle, in denen gereinigte oder nicht magnetisierbare Bleche gestapelt sind, so dass die Adhäsion zwischen den einzelnen Blechen vermindert ist. Hierfür schlägt die Erfindung vor, die Saugköpfe mit einem vertikal wirkenden Vibrationsantrieb zu versehen. Es hat sich herausgestellt, dass unter dieser wiederholten vertikalen Impulsbelastung eine Lockerung der Bleche untereinander, d. h. eine Verminderung ihrer Adhäsion, stattfindet. Man kann also die Bewegungskomponenten solcher Saugköpfe in Folge schalten, indem zunächst auf das im Stapel befindliche oberste Blech wiederholt ein Druck- und Saugimpuls ausgeübt und danach das Blech in Richtung zur Bearbeitungsmaschine in angehobener Lage voranbewegt wird.However, there are also cases in which cleaned or non-magnetizable sheets are stacked, so that the adhesion between the individual sheets is reduced. For this purpose, the invention proposes to provide the suction heads with a vertically acting vibration drive. It has been found that under this repeated vertical impulse load, the sheets are loosened from one another, i. H. a decrease in their adhesion takes place. One can therefore switch the movement components of such suction heads in succession by first repeatedly exerting a pressure and suction impulse on the uppermost sheet in the stack and then moving the sheet toward the processing machine in a raised position.
Um zu verhindern, dass zwei oder mehr Bleche gemeinsam der Bearbeitungsmaschine zugeführt werden, sieht ein bevorzugtes Ausführungsbeispiel der Erfindung zusätzlich die Anordnung einer Messeinrichtung für Blechdicken im Übergangsbereich zwischen dem Fördergerät und der Bearbeitungsmaschine vor, wobei es sich besonders empfiehlt, diese Messeinrichtung in Form eines Ultraschall-Messgerätes auszubilden. Ein solches Messgerät hat die Eigenschaft, Dickenunterschiede von Blechen festzustellen und sogar Luftschichten zwischen Blechschichten zu messen.To prevent two or more sheets from being fed together to the processing machine a preferred exemplary embodiment of the invention additionally provides for the arrangement of a measuring device for sheet thicknesses in the transition region between the conveying device and the processing machine, it being particularly advisable to design this measuring device in the form of an ultrasound measuring device. Such a measuring device has the property of determining differences in the thickness of sheet metal and even measuring air layers between sheet metal layers.
Einzelheiten der Erfindung sind in der Zeichnung schematisch und beispielsweise dargestellt. Es zeigen:
- Fig. 1: eine perspektivische Ansicht einer Fertigungsanlage und
- Fig. 2: eine Seitenansicht der Fertigungsanlage gemäss Figur 1.
- 1: a perspective view of a manufacturing plant and
- 2: a side view of the manufacturing system according to FIG. 1.
Das Ausführungsbeispiel der Figur 1 zeigt symbolisch eine Bearbeitungsmaschine (1 ), die beispielsweise in Form einer Stanze, Schere, Presse oder dergleichen für Blechbearbeitung ausgebildet sein kann. Dieser Bearbeitungsmaschine (1 ) ist eine Einzugsebene (2) für die zu bearbeitenden Werkstücke vorgeordnet. Im Beispiel handelt es sich um einen Tisch mit örtlich angeordneten Gleitelementen, auf denen das Werkstück, insbesondere ein Blech, reibungsarm voranbewegt werden kann. Die Ausgabeebene (3) ist im Ausführungsbeispiel hinter der Bearbeitungsmaschine (1 ) vorgesehen. Sie kann auch seitlich dieser Bearbeitungsmaschine (1) angeordnet sein.The exemplary embodiment in FIG. 1 symbolically shows a processing machine (1) which can be designed, for example, in the form of a punch, scissors, press or the like for sheet metal processing. A feed plane (2) for the workpieces to be machined is arranged upstream of this processing machine (1). In the example, it is a table with locally arranged sliding elements on which the workpiece, in particular a sheet metal, can be moved forward with little friction. The output level (3) is provided in the exemplary embodiment behind the processing machine (1). It can also be arranged on the side of this processing machine (1).
In Distanz vor der Bearbeitungsmaschine (1) befindet sich ein Palettenspeicher (4) in Form eines Hochregales, in dessen Fächer (5) Paletten (6) mit darauf angeordneten Blechstapeln (7) in beliebiger Weise eingeführt werden. Der Zwischenraum (8) zwischen diesem Palettenspeicher (4) und der Bearbeitungsmaschine (1) wird von einem Fördergerät (9) eingenommen, das längs der Hubrichtung (19) der Höhe nach am Palettenspeicher (4) bewegbar ist. Auf diese Weise wird die Möglichkeit gegeben, dass das Fördergerät (9) eine Palette (6) aus einem beliebigen Fach (5) des Palettenspeichers (4) entnehmen, oder in dieses Fach einführen kann.At a distance from the processing machine (1) there is a pallet store (4) in the form of a high rack, in the compartments (5) of which pallets (6) with sheet metal stacks (7) arranged thereon are inserted in any way. The space (8) between this pallet store (4) and the processing machine (1) is occupied by a conveyor (9) which can be moved along the height (19) of the pallet store (4). In this way, the possibility is given that the conveyor (9) can remove a pallet (6) from any compartment (5) of the pallet store (4) or insert it into this compartment.
Zu diesem Zweck weist das Fördergerät (9) eine Palettenwechseleinrichtung (10) (die nur symbolisch dargestellt ist, weil sie bei Hochregalen vorbekannt ist) und eine Vereinzelungs- und Beladevorrichtung (11) auf, die im einzelnen später beschrieben wird.For this purpose, the conveying device (9) has a pallet changing device (10) (which is only shown symbolically because it is known in high-bay racks) and a separating and loading device (11), which will be described in detail later.
Der Zweck dieser erfindungsgemässen Anordnung besteht darin, dass das Fördergerät (9) in der Lage sein soll, in Hubrichtung (19) um eine bestimmte Strecke voranbewegt zu werden, um eine Palette (6) vom Palettenspeicher (4) aufzunehmen, oder an diesen abzugeben. Beim Ausführungsbeispiel der Erfindung ist die Palettenwechseleinrichtung (10) ein Bestandteil des Fördergerätes (9). In Varianten dazu kann sie aber auch am Palettenspeicher (4) angeordnet sein. Da sie dem Prinzip nach bekannt sind, bedarf es keiner konstruktiven Darstellung.The purpose of this arrangement according to the invention is that the conveying device (9) should be able to be advanced a certain distance in the lifting direction (19) in order to pick up or deliver a pallet (6) from the pallet store (4) . In the embodiment of the invention, the pallet changing device (10) is a component of the conveyor (9). In variants, however, it can also be arranged on the pallet store (4). Since they are known in principle, no constructive representation is required.
An der der Bearbeitungsmaschine (1) abgekehrten Seite des Palettenspeichers (4) befindet sich eine Führung (12) für einen oder mehrere Schlitten (13), an denen über Hubanordnungen (14) Träger (15) für Blechstapel (7) oder (nicht dargestellt) Palettenwechseleinrichtungen oder dergleichen hängen, die ihrerseits dafür sorgen, dass Blechstapel (7) längs der Führungen (12,14) bewegt werden können. Es ist beispielsweise vorgesehen, dass leere Paletten (6) längs der Förderrichtung (17) mit Hilfe eines Fahrgerätes (27) bis zu einer Beladestation voranbewegt werden, wo diese mit den Blechstapeln (7) gemäss der Einrichtung (12-15) beladen werden. Dieses Fahrgerät (27) kann ausserdem mit einem Hubtisch aus- gerüstet sein, um die Paletten (6) in die einzelnen Fächer (5) zu bringen.On the side of the pallet store (4) facing away from the processing machine (1) there is a guide (12) for one or more slides (13) on which supports (15) for sheet metal stacks (7) or (not shown) are arranged via lifting arrangements (14) ) Hang pallet changing devices or the like, which in turn ensure that sheet metal stacks (7) can be moved along the guides (12, 14). It is provided, for example, that empty pallets (6) are moved along the conveying direction (17) with the aid of a driving device (27) to a loading station, where they are loaded with the sheet metal stacks (7) according to the device (12-15). This driving apparatus (27) can also be a lifting table Removing g erüstet, to bring the pallets (6) in the individual compartments (5).
In Figur 1 ist ferner symbolisch eine Spreizanordnung (18) in Form von Magneten dargestellt. Diese Magnete (18) haben die Aufgabe, bei ihrer Erregung die Bleche des Blattstapels (7) voneinander zu spreizen. Zu diesem Zweck weist der einzelne Magnet (18) übereinander und mit Abstand voneinander angeordnete Plus- und Minuspole an der dem Stapel (7) zugekehrten Seite auf. Es soll damit ein Magnetfluss zwischen den Polen der Magneten (18) erreicht werden, der zur Spreizung der Bleche führt. Wenn es sich um Permanentmagnete handelt, müssen diese beweglich angeordnet sein. Diese können beispielsweise längs einer horizontalen Achse, die sich parallel zur Förderrichtung (17) erstreckt, abgeschwenkt werden, um in eine wirkungslose Stellung zu gelangen. Wenn die Bleche vom Stapel (7) vereinzelt werden sollen, müssen die Magnete (18) allerdings in die Stellung gemäss Figur 1 bewegt werden. Der gleiche Effekt kann durch lineare Bewegungen der Magnete (18), etwa in senkrechter Richtung, herbeigeführt werden. Ausserdem ist es möglich, schaltbare Elektromagnete vorzusehen und die Wirkung durch Schaltung herbeizuführen.A spreading arrangement (18) in the form of magnets is also shown symbolically in FIG. These magnets (18) have the task of spreading the sheets of the sheet stack (7) apart when excited. For this purpose, the individual magnet (18) has positive and negative poles arranged one above the other and at a distance from one another on the side facing the stack (7). This is intended to achieve a magnetic flux between the poles of the magnets (18), which leads to the spreading of the sheets. If the magnets are permanent, they must be arranged so that they can move. These can be pivoted, for example, along a horizontal axis which extends parallel to the conveying direction (17) in order to reach an ineffective position. If the sheets from the stack (7) are to be separated, the magnets (18) must, however, be moved into the position according to FIG. 1. The same effect can be brought about by linear movements of the magnets (18), for example in the vertical direction. In addition, it is possible to provide switchable electromagnets and to bring about the effect by switching.
Wie die Figur 2 zeigt, sind den einzelnen Saugköpfen (20) Bewegungen in verschiedenen Richtungen zugeordnet. Das Beispiel zeigt am Saugkopf (20) über das Gelenk (22) schwenkbar gelagerte Saugteller (21), welche die Aufgabe haben, der Schrägstellung des jeweils obersten Bleches im Blechstapel (7) zu folgen und dennoch haftende Wirkung zu diesem Blech zu erzeugen. Strichpunktiert sind in Figur 2 an der rechten und linken Seite des Fördergerätes (9) Stellungen mit unterschiedlicher Lage des Saugtellers (21) vorgesehen.As FIG. 2 shows, movements in different directions are assigned to the individual suction heads (20). The example shows, on the suction head (20), swivel-mounted suction plates (21) via the joint (22), which have the task of following the inclination of the top sheet in the sheet stack (7) and nevertheless producing an adhesive effect on this sheet. Dash-dot lines in Figure 2 on the right and left side of the conveyor (9) positions with different positions of the suction plate (21) are provided.
An der der Bearbeitungsmaschine (1) zugekehrten Seite des Fördergerätes (9) befindet sich ein Blechauflagetisch (23), der an seiner Oberseite gleitfördernde Elemente (24) aufweist. Dieser Blechauflagetisch (23) ist um ein Gelenk (25) schwenkbar gelagert, welches sich oberhalb der Einzugsebene (2) der Bearbeitungsmaschine (1) befindet. Dieser Tisch (23) kann durch einen Schwenkantrieb (26) um das Gelenk (25) bewegt werden.On the side of the conveyor (9) facing the processing machine (1) there is a sheet-metal support table (23) which has sliding-promoting elements (24) on its upper side. This sheet support table (23) is pivotally mounted about a joint (25) which is located above the intake plane (2) of the processing machine (1). This table (23) can be moved around the joint (25) by a swivel drive (26).
Das Vereinzeln der Bleche des Blechstapels (7) erfolgt auf folgende Weise:
- Bei der in
Figur 2 dargestellten Stellung des Blechstapels (7) ist davon ausgegangen, dass die Kanten der einzelnen Bleche deckungsgleich übereinanderliegen, wenn eine Palette (6) mit dem Blechstapel (7) vom Fördergerät (9) aus dem Palettenspeicher (4) übernommen wird. Wenn die Bleche beispielsweise oberflächig gefettet sind, besteht im Prinzip keine Chance, das oberste Blech vom Stapel (7) abzuheben und in die Bearbeitungsmaschine einzuführen.
- In the position of the sheet stack (7) shown in FIG. 2, it is assumed that the The edges of the individual sheets lie congruently one above the other when a pallet (6) with the sheet stack (7) is taken over from the pallet store (4) by the conveyor (9). If, for example, the sheets are greased on the surface, there is in principle no chance of lifting the top sheet from the stack (7) and inserting it into the processing machine.
Um eine Distanzierung der einzelnen Bleche des Blechstapels (7) herbeizuführen, werden die Magnete (18) bzw. eine ähnlich wirkende Spreizanordnung gemäss Figur 1 erregt, was zur Folge hat, dass die Bleche in dem der Bearbeitungsmaschine (1) zugekehrten Bereich sich voneinander distanzieren. Daraus resultiert eine Relatiwerschiebung der Bleche dergestalt, dass das oberste Blech des Blechstapels (7) am rückwärtigen Ende am weitesten nach rückwärts vorkragt.In order to bring about a spacing of the individual sheets of the sheet stack (7), the magnets (18) or a spreading arrangement with a similar effect are excited according to FIG. 1, which has the consequence that the sheets in the area facing the processing machine (1) distance themselves from one another . This results in a relative shift of the sheets in such a way that the top sheet of the sheet stack (7) protrudes furthest backwards at the rear end.
Dies nützt das Ausführungsbeispiel der Erfindung aus, indem der Saugkopf (20) in der am weitesten rechts dargestellten, strichpunktierten Stellung mit seinem Saugteller (21 ) einen abwärts gerichteten Hub ausübt, was wegen der gefächerten Lage der Bleche eine Schrägstellung des obenliegenden Bleches zur Folge hat. Dieses obenliegende Blech gelangt daher mit seinem vorderen Rand in eine gegenüber dem Blechauflagetisch (23) erhöhte Lage, so dass nunmehr eine horizontale Hubbewegung des Saugkopfes (20) dazu führt, das obenliegende Blech mit seinem vorausliegenden Rand auf dem Blechauflagetisch (23) aufzuschieben. Sobald das Übergewicht des Bleches maschinenseitig ist, wird der Schwenkantrieb (26) betätigt und der Blechauflagetisch (23) in die strichpunktierte Stellung abgesenkt, und zwar um das Gelenk (25). Nun kann das daraufliegende Blech aus eigener Schwerkraft in die Einzugsebene (2) der Bearbeitungsmaschine (1) gelangen.This takes advantage of the exemplary embodiment of the invention, in that the suction head (20) in the right-most dot-dash position shown with its suction plate (21) exerts a downward stroke, which, due to the fanned position of the sheets, results in an inclined position of the sheet above . This front sheet therefore comes with its front edge in a position higher than the sheet support table (23), so that a horizontal lifting movement of the suction head (20) now leads to the sheet lying on top with its edge on the sheet support table (23). As soon as the sheet is overweight on the machine side, the swivel drive (26) is actuated and the sheet support table (23) is lowered into the dot-dash position, specifically around the joint (25). The sheet metal lying thereon can now enter the feed plane (2) of the processing machine (1) by gravity.
Wenn hingegen gereinigte oder nicht magnetisierbare Bleche aufeinandergestapelt sind, dann kann es sich empfehlen, die einzelnen Saugköpfe (20) mit Vibrationsantrieben zu versehen, welche auf die Oberfläche des obenliegenden Bleches vertikale Impulse aufbringen. Mit Hilfe dieser Impulse ist es auch möglich, Bleche voneinander zu distanzieren und danach in Richtung zur Bearbeitungsmaschine voranzubewegen.If, on the other hand, cleaned or non-magnetizable sheets are stacked on top of one another, then it may be advisable to provide the individual suction heads (20) with vibration drives which apply vertical impulses to the surface of the sheet above. With the help of these impulses, it is also possible to distance sheet metal from each other and then move it towards the processing machine.
Um das Einführen übereinanderliegender Bleche in die Bearbeitungsmaschine zu vermeiden, empfiehlt es sich, im Bereich des Blechauflagetisches (23) seitlich Messeinrichtungen zur Feststellung der Blechdicke vorzusehen, die beispielsweise in Form von Ultraschall-Messgeräten gestaltetsein können. Mit Hilfe dieser Messergebnisse können die Bewegungen der Saugköpfe (20) korrigiert werden.In order to avoid the insertion of sheets lying one above the other in the processing machine, it is advisable to provide measuring devices on the side in the area of the sheet support table (23) for determining the sheet thickness, which can be designed, for example, in the form of ultrasonic measuring devices. The movements of the suction heads (20) can be corrected with the aid of these measurement results.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT86901837T ATE42051T1 (en) | 1985-03-13 | 1986-02-27 | MANUFACTURING SYSTEM FOR AUTOMATIC MACHINING OF METALLIC WORKPIECES. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3509006 | 1985-03-13 | ||
| DE19853509006 DE3509006A1 (en) | 1985-03-13 | 1985-03-13 | MANUFACTURING SYSTEM FOR THE AUTOMATIC PROCESSING OF METAL WORKPIECES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0252084A1 EP0252084A1 (en) | 1988-01-13 |
| EP0252084B1 true EP0252084B1 (en) | 1989-04-12 |
Family
ID=6265095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86901837A Expired EP0252084B1 (en) | 1985-03-13 | 1986-02-27 | Fabrication system for the automatic working of metal workpieces |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4775277A (en) |
| EP (1) | EP0252084B1 (en) |
| DE (1) | DE3509006A1 (en) |
| WO (1) | WO1986005422A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211002B (en) * | 1987-12-15 | 1992-01-08 | Amada Co Ltd | Device and method for controlling a manipulator for a plate bending machine |
| US5120178A (en) * | 1989-06-06 | 1992-06-09 | Amada Company | Workpiece loading and unloading method and device for a plate processing machine |
| DE58900878D1 (en) * | 1989-10-25 | 1992-04-02 | Dieter Weiss | PALLET CHANGER FOR A LINEAR HORIZONTAL CONVEYOR. |
| EP0511508A1 (en) * | 1991-04-03 | 1992-11-04 | Kiwa Giken Kabushiki Kaisha | Laser machining system |
| IT1250501B (en) * | 1991-10-01 | 1995-04-08 | Comau Spa | UNIT AND METHOD FOR THE SUPPLY OF SEMI-FINISHED PRODUCTS TO A FORMING MACHINE, IN PARTICULAR TO A PRESS. |
| DE4201475A1 (en) * | 1992-01-21 | 1993-07-22 | Hubertus Dipl Ing Hein | Stack holder for plates of different format for ventilating and drying - loads plates onto and off each level via loading and unloading belts according to process sequence |
| US5813826A (en) * | 1997-02-21 | 1998-09-29 | Martain Family Trust | Bottom sheet dispenser for load forming machinery |
| DE29804850U1 (en) * | 1998-03-18 | 1999-08-26 | Kuka Schweissanlagen Gmbh | Processing system |
| WO2000041848A1 (en) | 1999-01-11 | 2000-07-20 | Amada Company, Limited | Sheet working system |
| US6394744B1 (en) | 1999-06-22 | 2002-05-28 | Sparta Lift, L.L.C. | Stacking machine for part trays |
| US6591486B1 (en) | 1999-10-15 | 2003-07-15 | Data I/O Corporation | Manufacturing and carrier system with feeder/Programming/buffer system |
| DE10144248A1 (en) * | 2001-08-31 | 2003-03-27 | Felsomat Gmbh & Co Kg | handling device |
| DE10162367B4 (en) * | 2001-12-18 | 2005-03-10 | Baumann Maschb Solms Gmbh & Co | Apparatus and method for storing paper stacks |
| US7472737B1 (en) * | 2003-01-15 | 2009-01-06 | Leannoux Properties Ag L.L.C. | Adjustable micro device feeder |
| IT1393623B1 (en) * | 2009-04-09 | 2012-05-08 | S T I M A Engineering S R L | SHEET MANIPULATION MACHINE |
| CN105109960B (en) * | 2015-08-03 | 2017-12-19 | 亿和精密工业（苏州）有限公司 | Feed type single-station feeding bin |
| DE102016108419B4 (en) * | 2016-05-06 | 2018-02-15 | Manz Ag | Process for the unmixed storage of components and sorting device |
| CN111300119A (en) * | 2020-03-14 | 2020-06-19 | 林秋红 | Automatic feeding device for cutting metal plate |
| CN113911750B (en) * | 2021-11-19 | 2023-09-22 | 博众精工科技股份有限公司 | Carry dish branch dish fortune material machine |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1716602A (en) * | 1927-09-07 | 1929-06-11 | Continental Can Co | Method of and means for separating metal sheets |
| DE1233330B (en) * | 1952-08-15 | 1967-01-26 | Budd Co | Device for lifting metal sheets from a stack of sheets |
| US2847212A (en) * | 1954-09-13 | 1958-08-12 | Donald E Stem | Method and apparatus for separating magnetic sheets |
| DE1452651A1 (en) * | 1965-09-30 | 1970-04-09 | Fuchs Martin Metallwaren | Single stage press |
| DE2256068A1 (en) * | 1972-05-17 | 1973-12-06 | Schmidt Gmbh & Co Kg | Blank feed mechanism - esp of sheet metal used with a non-cutting metal-working process operated from one posn |
| US4024963A (en) * | 1975-05-07 | 1977-05-24 | Hautau Charles F | Apparatus for transferring articles |
| DE2534819C2 (en) * | 1975-08-05 | 1983-12-15 | L. Schuler GmbH, 7320 Göppingen | Device for destacking and transporting blanks |
| CA1077387A (en) * | 1977-07-15 | 1980-05-13 | Stephen C. Clark | Automatic load unload turret punch |
| DE8115713U1 (en) * | 1981-05-26 | 1981-09-24 | Albert Irion Nachf., 7000 Stuttgart | SQUARE FORKLIFT |
| JPS5831822A (en) * | 1981-08-13 | 1983-02-24 | Toshiba Corp | Separator for magnetic members |
| SU1070100A1 (en) * | 1982-11-10 | 1984-01-30 | Ленинградское Электромашиностроительное Объединение "Электросила" Им.С.М.Кирова | Apparatus for succesive delivery of sheet |
-
1985
- 1985-03-13 DE DE19853509006 patent/DE3509006A1/en active Granted
-
1986
- 1986-02-27 US US07/002,706 patent/US4775277A/en not_active Expired - Fee Related
- 1986-02-27 EP EP86901837A patent/EP0252084B1/en not_active Expired
- 1986-02-27 WO PCT/EP1986/000102 patent/WO1986005422A1/en active IP Right Grant
Non-Patent Citations (2)
| Title |
|---|
| Tooling & Production, Band 51, Nr. 9, Dezember 1985, Solon, Ohio (US), "Flexible fabricating syste, useful for short runs" * |
| VD1-Z, Nr. 3, März 1979, Düsseldorf (DE), G. Vettin: "Flexibel automatisierte Fertigungsanlagen" * |
Also Published As
| Publication number | Publication date |
|---|---|
| US4775277A (en) | 1988-10-04 |
| DE3509006C2 (en) | 1991-05-08 |
| EP0252084A1 (en) | 1988-01-13 |
| WO1986005422A1 (en) | 1986-09-25 |
| DE3509006A1 (en) | 1986-09-25 |
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