EP1981661B1 - Method of fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils - Google Patents
Method of fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils Download PDFInfo
- Publication number
- EP1981661B1 EP1981661B1 EP07711138A EP07711138A EP1981661B1 EP 1981661 B1 EP1981661 B1 EP 1981661B1 EP 07711138 A EP07711138 A EP 07711138A EP 07711138 A EP07711138 A EP 07711138A EP 1981661 B1 EP1981661 B1 EP 1981661B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal strip
- lifting
- windings
- coil
- transporting
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/04—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
- B66C1/46—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces by inflatable elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/18—Load gripping or retaining means
- B66F9/182—Load gripping or retaining means by magnetic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/18—Load gripping or retaining means
- B66F9/185—Load gripping or retaining means by internally expanding grippers
Definitions
- the invention relates to a method for fixing the windings of a metal strip coil during lifting or transporting with a lifting magnet and a device for lifting and transporting Metallbandcoils, corresponding to the a conductive part of claims 1 and 2, as shown in EP1036753 A3 are known.
- Electromagnets also work wear-free and economically, and can ensure a high level of safety through the adjustable magnetic forces. As a rule, the magnetic force is designed so that the workpiece can not fall off the magnet even in unfavorable cases, such as vibrations, occurring shear forces or similar loads.
- a lifting magnet which is suspended in height on a suspension and for receiving magnetizable (ferromagnetic) material at another location and its transport from one to another location and its discharge at the other location.
- a holding device which is like a pair of forceps
- Unterlastgreifers is proposed at both ends of the lifting magnet to provide a perpendicular to the lifting magnet oriented guide, along each of which a pivot arm with one attached to the other end safety gripper height adjustable and is rotatably arranged.
- Another lifting device in which no lifting magnet is used, is in the US 2,752,191 described.
- an inflatable ring body or hose is used, which is inserted into the central opening of the coil and then inflated.
- the annular tube is arranged around a cylindrical base body which is intended to support the hose on the inside.
- a spreader is inserted into the center hole of the metal coil of ferromagnetic material and spread open so that a pressure is exerted on the inner windings, wherein the spreader is an inflatable body with flexible outer walls.
- the spreader also includes those bodies which have flexible outer walls over part of their outer surface.
- the balloon-like body which is preferably used, need not extend over the full height of the center hole.
- the body can either only in the upper area, where, for example, apply lifting magnets or act only in the middle of the bobbin. Due to the spreading causes the pressurized windings come to a surface investment, so that in the case of lifting a coil body with vertically arranged winding axis, the frictional engagement of the adjacent windings sufficient to avoid the above-described telescope effect.
- the method is used in the context of a device having a lifting magnet, so that in addition by the inserted into the center hole of the metal coil coils inflatable body and its dilation by compressed air in conjunction with the lifting magnet an easy-to-use and reliable lifting and transporting device is created.
- the coil 10 consists of a spirally wound band 17, which is held at its outer diameter via individual straps. This coil has a center hole 11 which is bounded by the inner surface 12.
- Fig. 1b shows 3 of several windings of the metal strip; These 3 windings are located around a central hole 11 and can lead to manufacturing and winding defects cause an air gap forms between the illustrated end faces of the edges and an attached magnetic pole piece, which can then cause the inner windings slip out due to gravity down ,
- a hose-like body 13 which consists of an inflatable material, is inserted into this central hole in accordance with the schematic representation. Via a supply line 14 compressed air is injected, which leads to a radial expansion of this hose-like body, so that itsêtmantel'an the inner wall 12 applies.
- winding axis 15 is vertical, so that now placed on the front-side annular surface 16 a lifting magnet and the coil 10 can be raised.
- the spreading device 13 may also be formed as part of a carrier body, are attached to the magnets. With the lowering of the carrier body on the coil with vertical winding axis of the mandrel is inserted and spread in the center hole. .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Fixierung der Wicklungen eines Metallband-coils während eines Anhebens oder Transportierens mit einem Lasthebemagneten und eine Vorrichtung zum Heben und Transportieren von Metallbandcoils, entsprechenden dem ein leitenden Teil der Ansprüche 1 und 2, wie sie aus der
Zum Transport von solchen Metallbandcoils aus ferromagnetischem Material werden Lasthebemagneten verwendet, die gegenüber einer Lastaufnahme mit Zangen den entscheidenden Vorteil besitzen, dass das aufzunehmende Werkstück ohne Beschädigung angehoben werden kann. Dies ist durch einen großflächigen Angriff von vorhandenen Magnetpolen möglich. Elektromagnete arbeiten auch verschleißfrei und wirtschaftlich und können über die einstellbaren Magnetkräfte eine große Arbeitssicherheit gewährleisten. Im Regelfall wird die Magnetkraft so ausgelegt, dass das Werkstück auch in ungünstigen Fällen, etwa bei Erschütterungen, auftretenden Querkräften oder ähnlichen Belastungen nicht vom Magneten abfallen kann.To transport such metal coils of ferromagnetic material lifting magnets are used, which have the decisive advantage over a load bearing with pliers that the male workpiece can be lifted without damage. This is possible by a large-scale attack of existing magnetic poles. Electromagnets also work wear-free and economically, and can ensure a high level of safety through the adjustable magnetic forces. As a rule, the magnetic force is designed so that the workpiece can not fall off the magnet even in unfavorable cases, such as vibrations, occurring shear forces or similar loads.
In der
Eine andere Hubvorrichtung, bei der kein Lasthebemagnet verwendet wird, wird in der
Das Anheben von Werkstücken mit einer flachen Oberfläche, auf die der Magnet großflächig aufgesetzt werden kann, ist relativ problemlos. Dies gilt auch für Feinblechcoils, sofern deren einzelne Wicklungen so fest aufeinander liegen, dass die beiden Stirnseiten der Coils als eben angesehen werden, so dass dort ein Lasthebemagnet aufgesetzt werden kann. Ein solcher Idealfall setzt jedoch voraus, dass die Wicklung des Coils sowie die Breite des gewickelten Metallbandes exakt ausgeführt sind, so dass die dünne Metallbandkante im gewickelten Coil in einer Ebene liegt. Häufig tritt in der Praxis der Fall auf, dass nach Aufsetzen und Einschalten des elektrischen Lasthebemagneten beim Anheben die in der Mitte befindlichen Wicklungen teleskopartig herausfallen, was dadurch erklärbar ist, dass bereits kleine Luftspalte zwischen den Stirnseiten der Wicklungen und den Polschuhen des Lasthebemagneten zu einer ungenügenden magnetischen Haftung führen, d. h. dass die Magnetkraft dort nicht ausreicht, um die Wicklungen zu halten. Hiergegen gibt es nach dem Stand der Technik verschiedene Lösungsvorschläge. So ist es beispielsweise möglich, die inneren Windungen an den Stirnflächen zu verschweißen. Ein anderer Weg besteht darin, im Mittelloch und an der Außenwand jeweils Spannvorrichtungen anzusetzen, welche für eine ausreichende Druckkraft zum Zusammenhalten des Coils dienen sollen. Schließlich besteht eine weitere Möglichkeit darin, beim Wickeln des Metallbandes nach einer Anzahl von mehreren Wicklungen ein weiteres Blech, das außen übersteht, einzulegen und diesen Vorgang ggf. mehrfach zu wiederholen. Nach Abschluss des Wickelns werden die überstehenden Blechenden an den Stirnseiten umgebogen, so dass auf diese Weise eine Art Paketbildung herbeigeführt wird. Alle vorgenannten Maßnahmen sind jedoch teilweise aufwendig, zum Teil wegen der Oberflächenbeschädigung der Coil-Stirnseite unerwünscht.The lifting of workpieces with a flat surface on which the magnet can be placed over a large area, is relatively easy. This also applies to thin sheet coils, provided that their individual windings are so tight to each other, that the two end faces of the coils are considered as flat, so that there a load-lifting magnet can be placed. However, such an ideal case requires that the winding of the coil as well as the width of the wound metal strip are made exactly, so that the thin metal strip edge in the wound coil lies in one plane. Frequently occurs in practice, the case that after mounting and switching on the electric lifting magnet when lifting the windings located in the middle telescopically fall, which is explained by the fact that even small air gaps between the end faces of the windings and the pole pieces of the lifting magnet to an insufficient cause magnetic adhesion, d. H. that the magnetic force is insufficient there to hold the windings. Against this there are different solutions according to the prior art. So it is possible, for example, to weld the inner turns on the end faces. Another way is to put in the center hole and on the outer wall each clamping devices, which should serve for sufficient pressure force to hold the coil together. Finally, there is another possibility, when winding the metal strip after a number of several windings another sheet that protrudes outside, insert and repeat this process, if necessary several times. After completion of the winding, the projecting plate ends are bent at the end faces, so that in this way a kind of packet formation is brought about. However, all the above measures are sometimes expensive, partly undesirable because of the surface damage of the coil end face.
Es ist daher Aufgabe der vorliegenden Erfindung ein Verfahren und eine Vorrichtung der eingangs genannten Art zu finden, mit der der Betriebsablauf so wenig wie möglich gestört und eine Beschädigung der Coiloberflächen vermieden wird.It is therefore an object of the present invention to find a method and a device of the type mentioned, with the operation as little as possible disturbed and damage to the coil surfaces is avoided.
Diese Aufgabe wird durch ein Verfahren nach Anspruch 1 sowie eine Vorrichtung nach Anspruch 2 gelöst.This object is achieved by a method according to claim 1 and an apparatus according to claim 2.
Erfindungsgemäß wird in das Mittelloch des Metallcoils aus ferromagnetischem Material eine Spreizvorrichtung eingeführt und so aufgespreizt, dass auf die inneren Wicklungen ein Druck ausgeübt wird, wobei die Spreizvorrichtung ein aufblasbarer Körper mit flexiblen Außenwänden ist. Das umfasst auch solche Körper, die über einen Teil ihrer Außenfläche flexible Außenwände besitzen. Der ballonartige Körper, der vorzugsweise verwendet wird, muss sich nicht über die volle Höhe des Mittelloches erstrecken. Der Körper kann entweder nur im oberen Bereich, dort wo beispielsweise Lasthebemagnete ansetzen sollen oder nur in der Mitte des Wickelkörpers wirken. Durch die Aufspreizung wird bewirkt, dass die druckbeaufschlagten Windungen zu einer Flächenanlage kommen, so dass im Falle des Anhebens eines Coilkörpers mit vertikal gestellter Wickelachse die Reibschlüssigkeit der aneinander liegenden Wicklungen ausreicht, um den eingangs geschilderten Teleskopeffekt zu vermeiden.According to the invention, a spreader is inserted into the center hole of the metal coil of ferromagnetic material and spread open so that a pressure is exerted on the inner windings, wherein the spreader is an inflatable body with flexible outer walls. This also includes those bodies which have flexible outer walls over part of their outer surface. The balloon-like body, which is preferably used, need not extend over the full height of the center hole. The body can either only in the upper area, where, for example, apply lifting magnets or act only in the middle of the bobbin. Due to the spreading causes the pressurized windings come to a surface investment, so that in the case of lifting a coil body with vertically arranged winding axis, the frictional engagement of the adjacent windings sufficient to avoid the above-described telescope effect.
Vorzugsweise wird das Verfahren im Rahmen einer Vorrichtung angewendet, die einen Lasthebemagneten besitzt, so dass zusätzlich durch den in das Mittelloch des Metallbandcoils eingeführten aufblasbaren Körper sowie dessen Dilatation mittels Pressluft in Verbindung mit dem Lasthebemagnet eine einfach bedienbare und zuverlässige Hebe- und Transportvorrichtung geschaffen ist.Preferably, the method is used in the context of a device having a lifting magnet, so that in addition by the inserted into the center hole of the metal coil coils inflatable body and its dilation by compressed air in conjunction with the lifting magnet an easy-to-use and reliable lifting and transporting device is created.
Das erfindungsgemäße Verfahren sowie die Vorrichtung werden anhand von Zeichnungen im Weiteren näher erläutert. Es zeigen:
- Fig. 1a und 2
- jeweils gewickelte Metallbandcoils in verschiedenen Ansichten mit eingeführter aufblasbarer Spreizvorrichtung.
- Fig. 1 b
- eine Prinzipskizze eines Teils des um ein
Mittelloch 11 gewickeltes Metallbandes.
- Fig. 1a and 2
- each wound metal band coils in different views with inserted inflatable spreading device.
- Fig. 1 b
- a schematic diagram of a portion of the wound around a
center hole 11 metal strip.
Der Coil 10 besteht aus einem spiralförmig gewickelten Band 17, das an seinem Außendurchmesser über einzelne Spannbänder gehalten wird. Dieses Coil besitzt ein Mittelloch 11, das von der Innenfläche 12 begrenzt wird.The
Claims (3)
- Method for fixing the windings of a metal strip coil while lifting or transporting it by load-lifting magnet, characterised in that in the central hole (11) of the metal strip coil an expanding device (13) is inserted and is expanded in such a way that a pressure is excerted on to the inner windings, whereby the expanding device (13) is an inflatable body with flexible outer walls.
- Device for lifting and transporting a metal strip coil, with a load-lifting magnet, characterised by an inflatable body (13) being insertable in the central hole (11) of a metal strip coil.
- Device according to claim 2, characterised in that the inflatable body can be filled with pressure air.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006006010A DE102006006010A1 (en) | 2006-02-08 | 2006-02-08 | Method for fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils |
PCT/DE2007/000042 WO2007090360A1 (en) | 2006-02-08 | 2007-01-13 | Method of fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1981661A1 EP1981661A1 (en) | 2008-10-22 |
EP1981661B1 true EP1981661B1 (en) | 2010-03-10 |
Family
ID=37969661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07711138A Not-in-force EP1981661B1 (en) | 2006-02-08 | 2007-01-13 | Method of fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1981661B1 (en) |
AT (1) | ATE460237T1 (en) |
DE (2) | DE102006006010A1 (en) |
WO (1) | WO2007090360A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2752191A (en) * | 1953-08-13 | 1956-06-26 | Nat Standard Co | Coil lifter |
AU5633573A (en) * | 1972-06-03 | 1974-12-05 | The Lucas Electrical Company Limited | Handling device |
US4173368A (en) * | 1978-05-01 | 1979-11-06 | The Lodge & Shipley Company | Apparatus for frictionally gripping the interior surface of a container during handling by an article transferring means |
US4273505A (en) * | 1978-09-22 | 1981-06-16 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Pneumatic inflatable end effector |
FR2671499B3 (en) * | 1991-01-16 | 1992-12-31 | Sollac | DEVICE FOR EXTRACTING A HOLLOW MEMBER INSERTED IN A HOUSING. |
DE19531513C2 (en) * | 1995-08-26 | 2002-06-20 | Betr Forsch Inst Angew Forsch | Electric lifting magnet |
DE19911897B4 (en) * | 1999-03-17 | 2008-02-21 | Woko Gmbh | Load magnet |
DE102005022058B4 (en) * | 2004-06-14 | 2007-03-08 | Eberhard, Manfred M. | coil tongs |
-
2006
- 2006-02-08 DE DE102006006010A patent/DE102006006010A1/en not_active Withdrawn
-
2007
- 2007-01-13 EP EP07711138A patent/EP1981661B1/en not_active Not-in-force
- 2007-01-13 WO PCT/DE2007/000042 patent/WO2007090360A1/en active Application Filing
- 2007-01-13 AT AT07711138T patent/ATE460237T1/en active
- 2007-01-13 DE DE502007003079T patent/DE502007003079D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102006006010A1 (en) | 2007-08-09 |
ATE460237T1 (en) | 2010-03-15 |
DE502007003079D1 (en) | 2010-04-22 |
EP1981661A1 (en) | 2008-10-22 |
WO2007090360A1 (en) | 2007-08-16 |
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