EP3760376B1 - Use of a rotation clamping device - Google Patents

Use of a rotation clamping device Download PDF

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Publication number
EP3760376B1
EP3760376B1 EP20176731.6A EP20176731A EP3760376B1 EP 3760376 B1 EP3760376 B1 EP 3760376B1 EP 20176731 A EP20176731 A EP 20176731A EP 3760376 B1 EP3760376 B1 EP 3760376B1
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EP
European Patent Office
Prior art keywords
sheet metal
clamping device
tensioning unit
expansion vessel
rolled sheet
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EP20176731.6A
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German (de)
French (fr)
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EP3760376C0 (en
EP3760376A1 (en
Inventor
Wolfgang Meiser
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Gebr Meiser GmbH
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Gebr Meiser GmbH
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Publication of EP3760376B1 publication Critical patent/EP3760376B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/065—Arrangements for positively actuating jaws with fluid drive involving the use of flexible pressure bags or diaphragms

Definitions

  • the invention relates to the use of a rotary clamping device, consisting of at least one clamping unit and the associated holding element, which mechanically connects the clamping unit to a table, the clamping unit having an expansion tank that can be filled with a pressure medium.
  • Such a rotary clamping device is from U.S. 2,425,928A known, which relates to a device for decorating cups.
  • a clamping unit with a fillable over a pressure medium expansion element is from U.S. 4,332,356A and the DE 11 71 837 A known.
  • the EP 2 163 345 A1 relates to a clamping system with a frame and a clamping device.
  • You clamping device has a central receptacle for a workpiece to be clamped. It has clamping means to fix the workpiece in the receptacle, the clamping device being pivotably attached to the frame.
  • the clamping device is rotatably mounted on the frame about an axis of rotation which perpendicularly intersects the axis of the receptacle and runs through the receptacle.
  • Barrel hoops usually have at least one punched-out hole at both ends, which is used for the later introduction of a rivet connection.
  • Another feature of the barrel hoops is the cone shape, which is adapted to the silhouette of a wine barrel.
  • barrel hoops can be protected against external influences, such as oxidation, by coating, for example powder coating.
  • the coating also serves to color the barrel hoops.
  • the barrel hoops must be fixed by a clamping unit, the clamping unit in turn being mechanically connected to a table, for example, via a holding element.
  • a currently common coating according to the state of the art requires a complex individual piece coating of the barrel hoops, in which either the inside has to be protected in advance against a coating by means of masking or the same has to be subsequently stripped off on the inner circumference.
  • the rotary clamping device is used for coating at least one sheet metal strip rolled in the shape of a circular ring, preferably barrel hoops.
  • the device has at least one clamping unit, which is used to hold and fix hoops during a machining process, primarily a coating process.
  • the tensioning unit can be designed in the form of a mandrel and in a preferred horizontal position protruding and at the same time allows multiple hoops to be accommodated.
  • part of the clamping unit increases in diameter when a pressure medium, preferably compressed air, is introduced.
  • the property of the invention that is particularly advantageous is that the expansion vessel, thanks to its flexible surface, adapts itself individually to the dimensional tolerances of the barrel hoops while maintaining a constant and sensitively adjustable pressurization.
  • the compensation of the cone shape of the barrel hoops plays a particularly important role here.
  • the device hereby fully meets the requirement that the inside of the barrel hoops be protected on the back against an application of the coating.
  • the invention enables the economical and targeted application of the coating due to the high packing density of the barrel hoops.
  • Such expansion vessels are, for example, from the canal construction industry in the form of air cushions from the DE 38 10 515 A1 and the DE 102 20 251 B4 known, which are usually used for the temporary sealing of sewer leaks, but have a special, process-related advantage as a clamping device due to a functional integration in the new field of application of the coating of barrel hoops.
  • the rotary clamping device when used according to the invention, not only fulfills the receiving and clamping function, but also a sealing function.
  • the Mostly conical circular rolled sheet metal strips can differ from each other in their dimensional and shape-related features.
  • wetting of the inner surface of the sheet metal strips rolled in the shape of a circular ring by the applied coating is prevented.
  • This is particularly advantageous in the case of barrel hoops, as this prevents the barrel rim from staining when it is pulled onto the barrels.
  • the uncoated inside also ensures that the barrel hoop sits securely on the barrel.
  • the tensioning unit has clamping devices along the circumference of the expansion vessel.
  • a clamping device fixes the separated ends of the barrel hoop and holds it in a clamped state that is pressurized against the internal pressure of the expansion vessel.
  • the clamping device can be designed in such a way that it has at least two fixing pins per rim corresponding to the rivet perforation of the hoops for receiving them via their punched holes on a base plate, which has an arcuate cross-sectional area matched to the clamping diameter.
  • the holding means have means for rotating the clamping unit about its radial center axis, via which the clamping unit is set in rotation so that the sheet metal strip rolled in a circle moves about its own axis.
  • the holding means prefferably have means for rotating the clamping unit about its radial central axis, for example by means of a rotary drive which causes the clamping unit to rotate so that the barrel hoops are rotated about their move its own axis.
  • this ensures a particularly uniform coating of the barrel hoops.
  • a particular embodiment of the invention is that the holding element is connected to the table in such a way that the clamping unit can be rotated about its vertical axis.
  • Several clamping devices can be used in this way be used in a horizontal position, two of which are preferably applied opposite one another on a table in order to enable a simultaneous set-up and coating process.
  • the rotation can take place in that the table enables the position of the two clamping devices to be exchanged via a rotary bearing by rotating around the vertical axis.
  • the table can be moved via a linear drive. This is used to insert and remove the barrel hoops from the coating booth.
  • one embodiment of the invention consists in the fact that the flexible surface of the expansion tank adapts itself individually to the dimensional tolerances of the sheet metal strips while maintaining a constant and sensitively adjustable pressure application, whereby wetting of the inner surface of the annular rolled sheet metal strips by the applied coating is prevented.
  • the sheet metal strips rolled in a circle are held in their position by the filling of the expansion tank.
  • the inside of the sheet metal strips rolled in a circle is covered by the outside of the expansion vessel. This prevents coating of the inner surfaces of the sheet metal strips rolled in a circle. By releasing the air, the sheet metal strips rolled in a circle are no longer fixed by the expansion tank and can be removed particularly easily.
  • FIG. 1 shows the clamping unit 1 with the pressure-loaded expansion vessel 3 and a connection flange used to lock it with a pipe connection 7, its bearing 4 together with a chain wheel 5 for transmitting the rotational movement.
  • the clamping device 2 for fixing the barrel hoops 6, which are equipped in a multiple arrangement along the axis of rotation, is also shown.
  • Figure 2a depicts a detail of the clamping unit 1 and shows the clamping device 2.
  • Figure 2b shows the fixing pins 8, via which the barrel hoops are fixed through their punched holes.
  • FIG. 3 shows the entire rotary clamping device 0 in a special embodiment with two clamping units 1, which are mounted opposite one another on a table top 15. This is rotatably mounted on the subframe 10 via a pivot bearing.
  • the two clamping units 1 are set in rotation independently of one another by means of the drive unit together with the motor and chain drive 9 .
  • the hand lever valves 12 allow separate filling and emptying of the expansion tank with compressed air.
  • the limit clamping pressure is set by the pressure control valve 13 in relation to the clamping units.
  • Pressure accumulator 11 is provided with a sufficient filling volume.
  • Guide carriages of a linear guide 14 are attached to the lower end of the base 10 .
  • FIG. 4 shows the rotary clamping device 0 with the two clamping units 1 mounted on a base plate 16 which has the necessary linear guide rails 18 .
  • An energy chain 17 is used for the purpose of guiding the cable along the linear movement.
  • FIG 5 illustrates the rotary clamping device 0 in the intended working environment with a powder booth 19.
  • the method for coating the barrel hoops is described by way of example with reference to the figure.
  • the employee in the set-up area 21 fixes several drum hoops 6 to the clamping unit 1 that is accessible to him using the clamping device 2.
  • the rotary clamping device is moved via the linear guide rails 18 until the clamping unit 1 with the freshly coated barrel hoop is driven out of the powder booth 19.
  • the rotary clamping device 0 rotates 180 degrees around the vertical axis.
  • the freshly coated drum hoops 6 are now accessible to workers in the set-up area 21 .
  • the rotary clamping device 0 is pushed back into the powder booth 19 via the linear guide rails 18 .
  • the coating and set-up process can start again.
  • Dismantling takes place in the opposite way to rigging, namely by relieving the pressure on the expansion vessel 3 so that its diameter is reduced, as a result of which the barrel rings 6 can be removed via the laterally open side of the clamping unit.
  • the expansion vessel 3 of the clamping unit 1 is filled via the manual valve 12 up to the limit pressure set on the pressure control valve 13. It can be seen that the position of the employee at the powder booth 20, which produces a usually line-shaped application of powder by means of a gun, in combination with the rotational movement of the associated rotary clamping device, a coating is applied evenly over the entire circumference of the barrel rings.
  • Figure 6a shows a horizontal section through the device according to FIG 1 and Figure 6b shows a detailed view of the expansion vessel 3 with fixed hoops 6. It can be seen that the inner surface of the hoops 6 fixed in this way is sealed by the clamping device, so that coatings applied to the hoops 6 cannot reach the inner surface of the hoops.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Clamps And Clips (AREA)

Description

Die Erfindung betrifft die Verwendung einer Dreh-Spannvorrichtung, bestehend aus mindestens einer Spanneinheit und dem dazugehörigen Halteelement, welches die Spanneinheit mit einem Tisch mechanisch verbindet, wobei die Spanneinheit ein über ein Druckmedium füllbares Ausdehnungsgefäß aufweist.The invention relates to the use of a rotary clamping device, consisting of at least one clamping unit and the associated holding element, which mechanically connects the clamping unit to a table, the clamping unit having an expansion tank that can be filled with a pressure medium.

Eine derartige Dreh-Spannvorrichtung ist aus der US 2,425,928 A bekannt, die eine Vorrichtung zum Dekorieren von Tassen betrifft.Such a rotary clamping device is from U.S. 2,425,928A known, which relates to a device for decorating cups.

Eine Spanneinheit mit einem über ein Druckmedium füllbaren Ausdehnungselement ist aus der US 4,332,356 A und der DE 11 71 837 A bekannt.A clamping unit with a fillable over a pressure medium expansion element is from U.S. 4,332,356A and the DE 11 71 837 A known.

Die EP 2 163 345 A1 betrifft ein Spannsystem mit einem Gestell und einer Spanneinrichtung. Sie Spanneinrichtung weist eine zentrale Aufnahme für ein zu spannendes Werkstück auf. Es besitzt Spannmittel, um das Werkstück in der Aufnahme zu fixieren, wobei die Spanneinrichtung an dem Gestell schwenkbar angebracht ist. Die Spanneinrichtung ist um eine Drehachse, die die Achse der Aufnahme senkrecht kreuzt und durch die Aufnahme verläuft, an dem Gestell drehbar gelagert.The EP 2 163 345 A1 relates to a clamping system with a frame and a clamping device. You clamping device has a central receptacle for a workpiece to be clamped. It has clamping means to fix the workpiece in the receptacle, the clamping device being pivotably attached to the frame. The clamping device is rotatably mounted on the frame about an axis of rotation which perpendicularly intersects the axis of the receptacle and runs through the receptacle.

Gewöhnlich weisen Fassreifen an ihren beiden Enden mindestens eine Ausstanzung auf, die der späteren Einbringung einer Nietverbindung dient. Weiteres Merkmal der Fassreifen ist die Konusform, welche der Silhouette eines Weinfasses angepasst ist.Barrel hoops usually have at least one punched-out hole at both ends, which is used for the later introduction of a rivet connection. Another feature of the barrel hoops is the cone shape, which is adapted to the silhouette of a wine barrel.

Diese Fassreifen können durch Beschichten, beispielsweise Pulverbeschichten, gegen äußere Einflüsse, wie beispielsweise Oxidation, geschützt werden. Des Weiteren dient die Beschichtung der Farbgebung der Fassreifen.These barrel hoops can be protected against external influences, such as oxidation, by coating, for example powder coating. The coating also serves to color the barrel hoops.

Dabei müssen die Fassreifen durch eine Spanneinheit fixiert werden, wobei die Spanneinheit wiederum über ein Halteelement beispielsweise mit einem Tisch mechanisch verbunden ist.In this case, the barrel hoops must be fixed by a clamping unit, the clamping unit in turn being mechanically connected to a table, for example, via a holding element.

Nachteilig verlangt eine derzeit übliche Beschichtung nach dem Stand der Technik eine aufwändige Einzelstückbeschichtung der Fassreifen, bei welcher entweder das Innere im Voraus gegen eine Beschichtung mittels Abklebens geschützt werden muss oder ein nachträgliches Abstreifen derselben am inneren Umfang zu erfolgen hat.Disadvantageously, a currently common coating according to the state of the art requires a complex individual piece coating of the barrel hoops, in which either the inside has to be protected in advance against a coating by means of masking or the same has to be subsequently stripped off on the inner circumference.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, das Beschichten von kreisringförmig gewalzten Blechstreifen, vorzugsweise Fassreifen, zu optimieren. Erfindungsgemäß wird die Aufgabe durch die Verwendung einer Dreh-Spannvorrichtung gemäß dem Oberbegriff zur Beschichtung von kreisförmig gewalzten Blechstreifen dadurch gelöst, dass

  • mindestens ein kreisförmig gewalzter Blechstreifen an der Spanneinheit mittels einer längs am Umfang des Ausdehungsgefäßes angeordneten Klemmvorrichtung fixiert wird,
  • das Ausdehnungsgefäß mit Druckluft befüllt wird,
  • die kreisförmig gewalzten Blechstreifen beschichtet werden,
  • die Druckluft aus dem Ausdehnungsgefäß entlassen wird,
die kreisförmig gewalzten Blechstreifen von der Spanneinheit gelöst werden.The object of the present invention is to optimize the coating of sheet metal strips rolled in the shape of a circular ring, preferably barrel hoops. According to the invention the object is achieved by the use of a rotary clamping device according to the preamble for coating circular rolled sheet metal strips in that
  • at least one metal strip rolled in a circle is fixed to the clamping unit by means of a clamping device arranged along the circumference of the expansion vessel,
  • the expansion vessel is filled with compressed air,
  • the sheet metal strips rolled in a circle are coated,
  • the compressed air is released from the expansion tank,
the sheet metal strips rolled in a circle are released from the clamping unit.

Die Dreh-Spannvorrichtung wird zum Beschichten von mindestens einem kreisringförmig gewalzten Blechstreifen, vorzugsweise Fassreifen verwendet.The rotary clamping device is used for coating at least one sheet metal strip rolled in the shape of a circular ring, preferably barrel hoops.

Die Vorrichtung besitzt mindestens eine Spanneinheit, welche der Aufnahme und Festsetzung von Fassreifen während eines Bearbeitungsprozesses, vornehmlich eines Beschichtungsverfahrens dient. Die Spanneinheit kann dornförmig und in bevorzugt horizontaler Lage hervorstechend gestaltet sein und erlaubt gleichzeitig die mehrfache Aufnahme von Fassreifen. Ausgebildet als Ausdehnungsgefäß, vergrößert sich ein Teil der Spanneinheit in ihrem Durchmesser durch die Einleitung eines Druckmediums, vorzugsweise Druckluft. Besonders vorteilhaft ist die Eigenschaft der Erfindung, dass sich das Ausdehnungsgefäß durch seine flexible Oberfläche an die Maßtoleranzen der Fassreifen unter der Einhaltung einer konstanten und sensibel regulierbaren Druckbeaufschlagung individuell anpasst. Hierbei spielt insbesondere auch der Ausgleich der Konusform der Fassreifen eine Rolle. Weiterhin erfüllt die Vorrichtung hierdurch uneingeschränkt die Anforderung, dass das Innere der Fassreifen rückseitig gegen ein Aufbringen der Beschichtung geschützt ist. Darüber hinaus ermöglicht die Erfindung die sparsame und gezielte Aufbringung der Beschichtung, aufgrund der hohen Packungsdichte der Fassreifen.The device has at least one clamping unit, which is used to hold and fix hoops during a machining process, primarily a coating process. The tensioning unit can be designed in the form of a mandrel and in a preferred horizontal position protruding and at the same time allows multiple hoops to be accommodated. Designed as an expansion tank, part of the clamping unit increases in diameter when a pressure medium, preferably compressed air, is introduced. The property of the invention that is particularly advantageous is that the expansion vessel, thanks to its flexible surface, adapts itself individually to the dimensional tolerances of the barrel hoops while maintaining a constant and sensitively adjustable pressurization. The compensation of the cone shape of the barrel hoops plays a particularly important role here. Furthermore, the device hereby fully meets the requirement that the inside of the barrel hoops be protected on the back against an application of the coating. In addition, the invention enables the economical and targeted application of the coating due to the high packing density of the barrel hoops.

Solche Ausdehnungsgefäße sind beispielsweise aus der Kanalbaubranche in Form von Luftkissen aus der DE 38 10 515 A1 und der DE 102 20 251 B4 bekannt, welche gewöhnlich zur vorübergehenden Abdichtung von Kanalleckagen eingesetzt werden, jedoch durch eine Funktionsintegration im neuen Anwendungsfeld der Beschichtung von Fassreifen eine besondere, prozessbezogene Vorteilhaftigkeit als Aufspannvorrichtung aufweisen.Such expansion vessels are, for example, from the canal construction industry in the form of air cushions from the DE 38 10 515 A1 and the DE 102 20 251 B4 known, which are usually used for the temporary sealing of sewer leaks, but have a special, process-related advantage as a clamping device due to a functional integration in the new field of application of the coating of barrel hoops.

Es hat sich im Rahmen der Erfindung als vorteilhaft erwiesen, dass bei der erfindungsgemäßen Verwendung die Dreh-Spannvorrichtung nicht nur die Aufnahme- und Spannfunktion erfüllt, sondern auch eine Abdichtungsfunktion. Die meist konischen kreisringförmig gewalzten Blechstreifen können sich in ihren maßlichen und formbezogenen Merkmalen voneinander unterscheiden. Insbesondere durch die flexible Oberfläche des Spanndorns in Verbindung mit dem diesen füllenden Druckmedium wird eine Benetzung der Innenfläche der kreisringförmig gewalzten Blechstreifen durch die die aufgebrachte Beschichtung unterbunden. Insbesondere bei Fassreifen ist dies von Vorteil, da hierdurch das Abfärben des Fassreifens beim Aufziehen auf die Fässer vermieden wird. Die unbeschichtete Innenseite sorgt zudem für einen sicheren Sitz des Fassreifens auf dem Fass.It has proven to be advantageous within the scope of the invention that, when used according to the invention, the rotary clamping device not only fulfills the receiving and clamping function, but also a sealing function. The Mostly conical circular rolled sheet metal strips can differ from each other in their dimensional and shape-related features. In particular, due to the flexible surface of the mandrel in connection with the pressure medium filling it, wetting of the inner surface of the sheet metal strips rolled in the shape of a circular ring by the applied coating is prevented. This is particularly advantageous in the case of barrel hoops, as this prevents the barrel rim from staining when it is pulled onto the barrels. The uncoated inside also ensures that the barrel hoop sits securely on the barrel.

Gemäß einer möglichen Ausgestaltung der Erfindung weist die Spanneinheit Klemmeinrichtungen längs am Umfang des Ausdehnungsgefäßes auf. Eine solche Klemmeinrichtung fixiert die getrennten Enden des Fassreifens und hält diesen gegen den Innendruck des Ausdehnungsgefäßes im Druck beaufschlagten Spannzustand fest. Mittels dieser in die Spannvorrichtung integrierten Klemmeinrichtung wird beim Anschmiegen des Ausdehnungsgefäßes an den Fassreifen sowie beim sich anschließenden Druckaufbau innerhalb des Fassreifens ein Kräfteumlauf induziert, sodass sich dieser infolgedessen nicht aufbiegt. Die Klemmeinrichtung kann so gestaltet sein, dass diese entsprechend der Nietlochung der Fassreifen mindestens zwei Fixierungsstifte pro Fassreifen zur Aufnahme derselben über ihre Lochstanzungen auf einer Grundplatte aufweist, wobei diese eine auf den Spanndurchmesser abgestimmte kreisbogenförmige Querschnittsfläche besitzt.According to a possible embodiment of the invention, the tensioning unit has clamping devices along the circumference of the expansion vessel. Such a clamping device fixes the separated ends of the barrel hoop and holds it in a clamped state that is pressurized against the internal pressure of the expansion vessel. By means of this clamping device integrated into the clamping device, a circulation of forces is induced when the expansion vessel nestles against the hoop and during the subsequent build-up of pressure within the hoop, so that the latter does not bend open as a result. The clamping device can be designed in such a way that it has at least two fixing pins per rim corresponding to the rivet perforation of the hoops for receiving them via their punched holes on a base plate, which has an arcuate cross-sectional area matched to the clamping diameter.

Eine Weiterbildung der Erfindung besteht darin, dass die Haltemittel Mittel zum Rotieren der Spanneinheit um ihre radiale Mittelachse aufweisen, über die die Spanneinheit in einen Umlauf versetzt wird, sodass sich der kreisförmig gewalzte Blechstreifen um seine eigene Achse bewegt.A further development of the invention is that the holding means have means for rotating the clamping unit about its radial center axis, via which the clamping unit is set in rotation so that the sheet metal strip rolled in a circle moves about its own axis.

Dabei ist es zweckmäßig, dass das Haltemittel Mittel zum Rotieren der Spanneinheit um ihre radiale Mittelachse aufweist, beispielsweise durch einen Rotationsantrieb, der die Spanneinheit in einen Umlauf versetzt, sodass sich die Fassreifen um ihre eigene Achse bewegen. Insbesondere wird dadurch eine besonders gleichmäßige Beschichtung der Fassreifen gewährleistet.It is expedient here for the holding means to have means for rotating the clamping unit about its radial central axis, for example by means of a rotary drive which causes the clamping unit to rotate so that the barrel hoops are rotated about their move its own axis. In particular, this ensures a particularly uniform coating of the barrel hoops.

Eine besonderen Ausführungsform der Erfindung besteht darin, dass das Halteelement derart mit dem Tisch verbunden ist, dass die Spanneinheit um ihre vertikale Achse rotierbar ist. Dabei können mehrere Spannvorrichtungen in horizontaler Lage eingesetzt werden, wobei bevorzugt zwei derselben gegenüberliegend auf einem Tisch aufgebracht sind, um einen zeitgleichen Rüst- und Beschichtungsvorgang zu ermöglichen. Die Rotation kann erfolgen, indem der Tisch über ein Drehlager den Positionstausch der beiden Spannvorrichtungen durch Rotation um die vertikale Achse ermöglicht.A particular embodiment of the invention is that the holding element is connected to the table in such a way that the clamping unit can be rotated about its vertical axis. Several clamping devices can be used in this way be used in a horizontal position, two of which are preferably applied opposite one another on a table in order to enable a simultaneous set-up and coating process. The rotation can take place in that the table enables the position of the two clamping devices to be exchanged via a rotary bearing by rotating around the vertical axis.

Dabei ist es zweckmäßig, dass der Tisch über einen Linearantrieb verfahrbar ist. Dies dient dem Einführen und Herausfahren der Fassreifen aus der Beschichtungskabine.It is expedient here that the table can be moved via a linear drive. This is used to insert and remove the barrel hoops from the coating booth.

Schließlich besteht eine Ausbildung der Erfindung darin, dass sich das Ausdehnungsgefäß durch seine flexible Oberfläche an die Maßtoleranzen der Blechstreifen unter der Einhaltung einer konstanten und sensibel regulierbaren Druckbeaufschlagung individuell anpasst, wodurch eine Benetzung der Innenfläche der kreisringförmig gewalzten Blechstreifen durch die die aufgebrachte Beschichtung unterbunden wird.Finally, one embodiment of the invention consists in the fact that the flexible surface of the expansion tank adapts itself individually to the dimensional tolerances of the sheet metal strips while maintaining a constant and sensitively adjustable pressure application, whereby wetting of the inner surface of the annular rolled sheet metal strips by the applied coating is prevented.

Die kreisförmig gewalzten Blechstreifen werden durch das Befüllen des Ausdehnungsgefäßes in ihrer Position gehalten. Vorteilhaft wird dabei die Innenseite der kreisförmig gewalzten Blechstreifen von der Außenseite des Ausdehnungsgefäßes abgedeckt. Dies verhindert eine Beschichtung der Innenflächen der kreisförmig gewalzten Blechstreifen. Durch das Entlassen der Luft sind die kreisförmig gewalzten Blechstreifen nicht mehr durch das Ausdehnungsgefäß fixiert und können besonders einfach entnommen werden.The sheet metal strips rolled in a circle are held in their position by the filling of the expansion tank. Advantageously, the inside of the sheet metal strips rolled in a circle is covered by the outside of the expansion vessel. This prevents coating of the inner surfaces of the sheet metal strips rolled in a circle. By releasing the air, the sheet metal strips rolled in a circle are no longer fixed by the expansion tank and can be removed particularly easily.

Im Folgenden werden Ausführungsbeispiele der erfindungsgemäßen Vorrichtung anhand von Zeichnungen erläutert.Exemplary embodiments of the device according to the invention are explained below with reference to drawings.

Es zeigen

Fig. 1
eine perspektivische Ansicht einer erfindungsgemäßen Vorrichtung,
Fig. 2
Detailansichten einer erfindungsgemäßen Vorrichtung,
Fig. 3
eine weitere perspektivische Ansicht der erfindungsgemäßen Vorrichtung,
Fig. 4
eine weitere perspektivische Ansicht der erfindungsgemäßen Vorrichtung,
Fig. 5
eine weitere perspektivische Ansicht der erfindungsgemäßen Vorrichtung,
Fig. 6a und Fig. 6b
einen horizontalen Schnitt durch die Vorrichtung gemäß Fig. 1 sowie eine Detailansicht des Ausdehnungsgefäßes mit fixierten Fassreifen.
Show it
1
a perspective view of a device according to the invention,
2
Detailed views of a device according to the invention,
3
another perspective view of the device according to the invention,
4
another perspective view of the device according to the invention,
figure 5
another perspective view of the device according to the invention,
Figures 6a and 6b
a horizontal section through the device according to 1 as well as a detailed view of the expansion vessel with fixed barrel hoops.

Fig. 1 zeigt die Spanneinheit 1 mit dem Druck beaufschlagten Ausdehnungsgefäß 3 sowie ein zu dessen Arretierung verwendeter Anbindungsflansch mit Rohranschluss 7, dessen Lagerung 4 mitsamt Kettenrad 5 zur Übertragung der Rotationsbewegung. Darüber hinaus ist auch die Klemmeinrichtung 2 zur Fixierung der Fassreifen 6, die in mehrfacher Anordnung längs der Rotationsachse gerüstet sind, dargestellt. 1 shows the clamping unit 1 with the pressure-loaded expansion vessel 3 and a connection flange used to lock it with a pipe connection 7, its bearing 4 together with a chain wheel 5 for transmitting the rotational movement. In addition, the clamping device 2 for fixing the barrel hoops 6, which are equipped in a multiple arrangement along the axis of rotation, is also shown.

Fig. 2a bildet ein Detail der Spanneinheit 1 ab und zeigt die Klemmeinrichtung 2. Figure 2a depicts a detail of the clamping unit 1 and shows the clamping device 2.

Fig. 2b zeigt die Fixierungsstifte 8, über welche die Fassreifen durch ihre Lochstanzungen hindurch fixiert werden. Figure 2b shows the fixing pins 8, via which the barrel hoops are fixed through their punched holes.

Fig. 3 zeigt die gesamte Dreh-Spannvorrichtung 0 in einer besonderen Ausführungsform mit zwei Spanneinheiten 1, welche gegenüberliegend auf einer Tischplatte 15 montiert sind. Diese ist über ein Drehlager auf dem Untergestell 10 rotativ gelagert. Mittels der Antriebseinheit mitsamt Motor und Kettentrieb 9 werden die beiden Spanneinheiten 1 unabhängig voneinander in Rotation versetzt. Die Handhebelventile 12 erlauben das separate Befüllen und das Entleeren des Ausdehnungsgefäßes mit Druckluft. Der Grenzspanndruck wird spanneinheitenbezogen durch das Druckregelventil 13 eingestellt. Mittels des Druckspeichers 11 wird ein ausreichendes Befüllungsvolumen zur Verfügung gestellt. Am unteren Ende des Untergestells 10 sind Führungswagen einer Linearführung 14 angebracht. 3 shows the entire rotary clamping device 0 in a special embodiment with two clamping units 1, which are mounted opposite one another on a table top 15. This is rotatably mounted on the subframe 10 via a pivot bearing. The two clamping units 1 are set in rotation independently of one another by means of the drive unit together with the motor and chain drive 9 . The hand lever valves 12 allow separate filling and emptying of the expansion tank with compressed air. The limit clamping pressure is set by the pressure control valve 13 in relation to the clamping units. by means of Pressure accumulator 11 is provided with a sufficient filling volume. Guide carriages of a linear guide 14 are attached to the lower end of the base 10 .

Fig. 4 zeigt die Dreh-Spannvorrichtung 0 mit den beiden Spanneinheiten 1 auf einer Grundplatte 16 montiert, die die notwendigen Linearführungsschienen 18 aufweist. Zum Zweck der Kabelführung entlang der Linearbewegung ist eine Energiekette 17 eingesetzt. 4 shows the rotary clamping device 0 with the two clamping units 1 mounted on a base plate 16 which has the necessary linear guide rails 18 . An energy chain 17 is used for the purpose of guiding the cable along the linear movement.

Fig. 5 bebildert die Dreh-Spannvorrichtung 0 in der bestimmungsgemäßen Arbeitsumgebung mit einer Pulverkabine 19. Dabei wird das Verfahren zur Beschichtung der Fassreifen beispielhaft anhand der Figur beschrieben. Der Mitarbeiter im Rüstbereich 21 fixiert mehrere Fassreifen 6 über die Klemmeinrichtung 2 an der für ihn zugänglichen Spanneinheit 1. Sobald der Mitarbeiter beim Pulverbeschichten 20 den Pulverauftrag abgeschlossen hat, wird die Dreh-Spannvorrichtung über die Linearführungsschienen 18 bewegt, bis die Spanneinheit 1 mit den frisch beschichteten Fassreifen aus der Pulverkabine 19 herausgefahren ist. Es kommt zum Drehen der Dreh-Spannvorrichtung 0 um 180 Grad um die vertikale Achse. Damit sind die frisch beschichteten Fassreifen 6 nun dem Mitarbeiten im Rüstbereich 21 zugänglich. Bevor es zum Abrüsten dieser kommt, wird die Dreh-Spannvorrichtung 0 wieder über die Linearführungsschienen 18 in die Pulverkabine 19 verschoben. Der Beschichtungs- und Rüstvorgang kann von Neuem beginnen. figure 5 illustrates the rotary clamping device 0 in the intended working environment with a powder booth 19. The method for coating the barrel hoops is described by way of example with reference to the figure. The employee in the set-up area 21 fixes several drum hoops 6 to the clamping unit 1 that is accessible to him using the clamping device 2. As soon as the employee has completed the powder application during powder coating 20, the rotary clamping device is moved via the linear guide rails 18 until the clamping unit 1 with the freshly coated barrel hoop is driven out of the powder booth 19. The rotary clamping device 0 rotates 180 degrees around the vertical axis. The freshly coated drum hoops 6 are now accessible to workers in the set-up area 21 . Before it is dismantled, the rotary clamping device 0 is pushed back into the powder booth 19 via the linear guide rails 18 . The coating and set-up process can start again.

Das Abrüsten erfolgt in umgekehrter Weise zum Aufrüsten, nämlich durch ein Entlasten des Ausdehnungsgefäßes 3, sodass sich dieses im Durchmesser verkleinert, wodurch die Fassringe 6 über die seitlich offene Seite der Spanneinheit entnommen werden können. Müssen die Fassringe 6 gerüstet werden, so wird nach dem Einhängen dieser in die Fixierungsstifte 8 das Ausdehnungsgefäß 3 der Spanneinheit 1 über das Handventil 12 bis zu dem am Druckregelventil 13 eingestellten Grenzdruck gefüllt. Es wird ersichtlich, dass durch die Stellung des Mitarbeiters an der Pulverkabine 20, welcher mittels einer Pistole einen gewöhnlich linienförmigen Pulverauftrag erzeugt, in Kombination mit der Rotationsbewegung der zugehörigen Dreh-Spannvorrichtung, ein über den kompletten Umfang der Fassringe gleichmäßiger Beschichtungsauftrag erfolgt.Dismantling takes place in the opposite way to rigging, namely by relieving the pressure on the expansion vessel 3 so that its diameter is reduced, as a result of which the barrel rings 6 can be removed via the laterally open side of the clamping unit. If the barrel rings 6 have to be set up, after they have been hooked into the fixing pins 8, the expansion vessel 3 of the clamping unit 1 is filled via the manual valve 12 up to the limit pressure set on the pressure control valve 13. It can be seen that the position of the employee at the powder booth 20, which produces a usually line-shaped application of powder by means of a gun, in combination with the rotational movement of the associated rotary clamping device, a coating is applied evenly over the entire circumference of the barrel rings.

Fig. 6a zeigt einen horizontalen Schnitt durch die Vorrichtung gemäß Fig. 1 und Fig. 6b zeigt eine Detailansicht des Ausdehnungsgefäßes 3 mit fixierten Fassreifen 6. Es ist zu erkennen, dass die Innenfläche der so fixierten Fassreifen 6 durch die Spannvorrichtung abgedichtet ist, so dass auf die Fassreifen 6 aufgebrachte Beschichtungen nicht auf die Innenfläche der Fassreifen gelangen können. Figure 6a shows a horizontal section through the device according to FIG 1 and Figure 6b shows a detailed view of the expansion vessel 3 with fixed hoops 6. It can be seen that the inner surface of the hoops 6 fixed in this way is sealed by the clamping device, so that coatings applied to the hoops 6 cannot reach the inner surface of the hoops.

Claims (3)

  1. Use of a rotary clamping device (0), consisting of at least one tensioning unit (1) and the associated holding element which mechanically connects the tensioning unit to a table (15), the tensioning unit (1) comprising an expansion vessel (3) which can be filled via a pressure medium, for coating circularly rolled sheet metal strips (6), characterized in that
    • at least one circularly rolled sheet metal strip (6) is fixed to the tensioning unit (1) by means of a clamping device (2) arranged longitudinally on the circumference of the expansion vessel (3),
    • the expansion vessel (3) is filled with compressed air,
    • the circularly rolled sheet metal strips (6) are coated,
    • the compressed air is released from the expansion vessel (3),
    • the circularly rolled sheet metal strips (6) are released from the tensioning unit (1).
  2. Use according to claim 1, characterised in that the holding means comprise means for rotating the tensioning unit (1) about its central radial axis, via which the tensioning unit is set in rotation so that the circularly rolled sheet metal strip (6) moves about its own axis.
  3. Use according to one of the preceding claims, characterised in that the expansion vessel (3), by means of its flexible surface, adapts individually to the dimensional tolerances of the sheet metal strip (6) while maintaining a constant and sensitively adjustable pressurisation, whereby wetting of the inner surface of the annularly rolled sheet metal strip (6) is ensured.
EP20176731.6A 2019-05-27 2020-05-27 Use of a rotation clamping device Active EP3760376B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019114066.8A DE102019114066A1 (en) 2019-05-27 2019-05-27 Device and method for coating sheet metal strips rolled in a circle

Publications (3)

Publication Number Publication Date
EP3760376A1 EP3760376A1 (en) 2021-01-06
EP3760376C0 EP3760376C0 (en) 2023-09-06
EP3760376B1 true EP3760376B1 (en) 2023-09-06

Family

ID=70861271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20176731.6A Active EP3760376B1 (en) 2019-05-27 2020-05-27 Use of a rotation clamping device

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EP (1) EP3760376B1 (en)
DE (1) DE102019114066A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425928A (en) * 1943-05-01 1947-08-19 Homer Laughlin China Company Cup decorating machine
DE1171837B (en) * 1958-03-18 1964-06-04 Walbersdorf Sondermaschb Clamping device, especially for sensitive, for example thin-walled workpieces
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
US4332356A (en) * 1981-02-23 1982-06-01 Damour Lawrence R Chuck for simultaneously winding a plurality of narrow product strips on cores
US4403801A (en) * 1981-02-24 1983-09-13 Caterpillar Tractor Co. Clamp assembly
DE3810515A1 (en) * 1988-03-28 1989-10-19 Gerd Goebel SEALING CUSHION FOR CLOSING OPENINGS AND CONTINUOUS
DE10220251B4 (en) * 2002-05-06 2004-07-29 Haro, Jürgen Inflatable tube sealing cushion
EP2163345B1 (en) * 2008-09-12 2013-02-20 Schunk GmbH & Co. KG Spann- und Greiftechnik Clamping system and device with a central opening for retaining a workpiece
WO2015123128A1 (en) * 2014-02-11 2015-08-20 Empire Robotics, Inc. Jamming grippers and methods of use

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Publication number Publication date
EP3760376C0 (en) 2023-09-06
DE102019114066A1 (en) 2020-12-03
EP3760376A1 (en) 2021-01-06

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