EP1782951A1 - Mandrel for digital printing - Google Patents

Mandrel for digital printing Download PDF

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Publication number
EP1782951A1
EP1782951A1 EP05110323A EP05110323A EP1782951A1 EP 1782951 A1 EP1782951 A1 EP 1782951A1 EP 05110323 A EP05110323 A EP 05110323A EP 05110323 A EP05110323 A EP 05110323A EP 1782951 A1 EP1782951 A1 EP 1782951A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
hollow body
clamping
shaft
control part
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.)
Granted
Application number
EP05110323A
Other languages
German (de)
French (fr)
Other versions
EP1782951B8 (en
EP1782951B1 (en
Inventor
Werner Noll
Helmut Thate
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ardagh Metal Beverage Germany GmbH
Ardagh Metal Beverage Holdings GmbH and Co KG
Original Assignee
Ball Packaging Europe Holding GmbH and Co KG
Ball Packaging Europe GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to ES05110323T priority Critical patent/ES2298951T3/en
Application filed by Ball Packaging Europe Holding GmbH and Co KG, Ball Packaging Europe GmbH filed Critical Ball Packaging Europe Holding GmbH and Co KG
Priority to AT05110323T priority patent/ATE380658T1/en
Priority to DE502005002250T priority patent/DE502005002250D1/en
Priority to PL05110323T priority patent/PL1782951T3/en
Priority to EP05110323A priority patent/EP1782951B8/en
Priority to JP2008539410A priority patent/JP5300484B2/en
Priority to CA2628334A priority patent/CA2628334C/en
Priority to UAA200807572A priority patent/UA95618C2/en
Priority to CN2006800503292A priority patent/CN101351340B/en
Priority to PCT/EP2006/068090 priority patent/WO2007051848A1/en
Priority to NZ568203A priority patent/NZ568203A/en
Priority to RU2008122059/12A priority patent/RU2422287C2/en
Priority to AU2006310477A priority patent/AU2006310477B2/en
Priority to BRPI0618252-6A priority patent/BRPI0618252B1/en
Priority to US12/092,530 priority patent/US8708271B2/en
Publication of EP1782951A1 publication Critical patent/EP1782951A1/en
Application granted granted Critical
Publication of EP1782951B1 publication Critical patent/EP1782951B1/en
Priority to IL191223A priority patent/IL191223A/en
Priority to ZA200804453A priority patent/ZA200804453B/en
Publication of EP1782951B8 publication Critical patent/EP1782951B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/002—Supports of workpieces in machines for printing on hollow articles

Definitions

  • the invention relates to the mandrel for rotationally symmetrical hollow body, in particular for integrally formed from the hull and bottom doses, usually with a dome-shaped inwardly curved bottom.
  • the clamping and holding forces are synchronously and uniformly in the interior of the hollow body, in particular the can effectively, and combine with corresponding radial pressure mandrel and box to a motion unit whose movements can be controlled with high accuracy. Any risk of permanent deformation of the can, as it can occur when holding from outside or only at the end faces, is excluded.
  • the parts and devices used for the controlled movement of the clamping elements are located inside the mandrel.
  • the bottom of the hollow body is used in conjunction with the free end face of the mandrel as a kind of valve element that automatically ensures that when threading the can on the mandrel by means of negative pressure, the soil is applied to the mandrel end, the negative pressure is effective to the Clamping segments to move radially outward, whereby they put under pressure against the inner wall of the can (claim 11, claim 12).
  • the claimed method for positionally accurate positioning and controlled - preferably gradual - precision movement of rotationally symmetric, of hull and bottom "integral" (without seam in the bottom area) hollow bodies, especially beverage cans, even with inwardly curved bottom, is made possible by the achieved exact clamping , It is about a precise definition without the risk of damage or deformation of the workpiece. This allows the procedure according to claim 11 or according to claim 12.
  • the accuracy of the clamping can be rewritten to achieve the same accuracy of motion transmission, in a sense that can be called "suitable for digital printing".
  • a rest position of the clamping device is achieved by a return hollow force (claim 14). It pulls the power transmission device back to a rest position. This is in any case suitable to compensate for fluctuating diameter of the hollow body, which can be pushed with their varying diameter on the mandrel.
  • the coupling of the force to the sucked and held can as an example of a hollow body with a thin wall is preferably improved so that the mandrel has an end face which is adapted at least in the region of the outlet of the axial bore to the shape of the can bottom.
  • a dome-shaped curvature inwards (at the box) is a dome-shaped curvature inwards (at the mandrel) in the axial direction.
  • the actual clamping surface of the mandrel 1 is formed by a plurality of preferably identically formed clamping segments 2a, 2b, 2c, etc. (in short: 2), each having a part-cylindrical outer surface and thus together form a cylindrical clamping surface. They extend over the entire length of the mandrel 1 and are movably guided on the main body of the mandrel in the radial direction.
  • the main body consists of a central, extending over the entire length of the mandrel and beyond one of its front ends out shaft 3, on the corresponding axial distance two end wall elements 6 and 7 are fixed, between which the clamping elements 2 extend.
  • the end wall element 7 at the free front end of the mandrel 1 has a cylindrical wall 11 extending axially a distance far into the interior of the mandrel.
  • the shaft 3 has a continuous axial bore 4 which terminates flush with the free end 5 of the shaft 3 and the outer surface 7a of the end wall element. At an axial distance from this end 5 and in the region of the cylindrical wall 11, the shaft 3 has radial bores 21, which are in communication with the axial bore 4. Slightly further axially to the mandrel interior is on the shaft 3 axially slidably disposed a disk-shaped wall part 10 which is sealingly and slidably guided over a ring member 12 on the cylindrical wall 11.
  • control part 13 is axially outside the pressure chamber 9, but forms together with the disk-shaped wall part 10 is a force transmission device, as will be explained in more detail immediately.
  • the control part 13 has an axial bore 13 a, whose Diameter is significantly larger than the outer diameter of the shaft 3.
  • the control part has a slightly tapered outer surface 19 in the axial direction.
  • the clamping segments 2 on its inside a corresponding, i. to the surface 19 parallel conical surface 17. This can, as shown on separate, but be provided with the clamping segments firmly connected elements.
  • corresponding support and power transmission elements 18 are arranged, which are fixedly connected to one of the two parts 2 and 13 respectively.
  • the radial movement of the clamping segments 2 is effected by means of negative pressure for clamping and overpressure for releasing the voltage. Both pressures are effective via the axial bore 4 of the shaft 3.
  • Both pressures are used to axially apply a one-piece from the bottom and hull box on the mandrel and repel it.
  • the can bottom is used together with the outer surface of the end wall element 7 to automatically trigger the clamping movement of the clamping segments 2 only when the can is properly threaded axially onto the mandrel and to start the ejection process only when the clamping segments have released the can accordingly.
  • the outer surface 7a, 7b of the end wall element 7 is formed so that it has a ringfömige surface contact with the firmly fitting bottom of the can, which stops a suction of air from the outside by the applied negative pressure, so now the negative pressure on the radial bores 21 and the chamber 9 acts on the disc-shaped wall part 10 and this moves together with the control part 13 in Fig. 3 to the left.
  • the clamping segments 2 are moved radially outward via the cooperating conical surfaces.
  • a good coupling is achieved when the shape of the dome-shaped bottom of the hollow body, which is not shown, but generally known, is placed on the shape of the end face of the mandrel.
  • a concave / convex fit is appropriate.
  • the return movement of the adjusting device can be achieved by a spring 40. This is arranged between the control part 13 and the end wall element 96). It ensures that the control part (13) is brought into a rest position after a blow-off of the hollow body, so-called zero position, and does not remain in an undefined axial position state. Thus, the next hollow body can be properly absorbed and compensated by tolerance diameter fluctuations of the hollow body can be compensated.
  • the arrangement is very simple and yet works extremely fast and accurate.
  • the hollow bodies are covered from the inside over a large area and safely, but also gently by the clamping segments.
  • the necessary movement distances of the moving parts of the mandrel are small.
  • the control by means of negative pressure and overpressure is simple and reliable.
  • the can and mandrel form a functional unit that can be reliably moved by controlled movement of the shaft 3 in any direction and with every step and stepping speed.

Abstract

Mandrel has several clamping segments (2a) forming cylindrical clamping surface (16) for engaging inner surface of hollow body and the clamping segments are guided to move radially in a synchronous manner. A power transmission device (10,13) is arranged inside the mandrel for controlling radial movement of the clamping segments by which the clamped hollow body is moved in a precisely controlled manner. An independent claim is also included for procedure for accurate positioning and controlling the hollow body.

Description

Vorgeschlagen wird ein Verfahren und ein Spanndorn zum Aufnehmen und exakten Festlegen von Hohlkörpern für die Ausführung von gesteuerten Präzisionsbewegungen. Damit soll erreicht werden, die Position des Hohlkörpers so genau steuern zu können, dass eine digitale Bedruckung der Außenwand des Hohlkörpers in einer hohen Genauigkeit möglich wird. Die digitale Bedruckung (digital printing) ersetzt die bisher mit einem Verfahren aufgebrachten Farb- und Dekorgebung der Außenwand des Hohlkörpers.It proposes a method and a mandrel for receiving and exact setting of hollow bodies for the execution of controlled precision movements. This is intended to be able to control the position of the hollow body so precisely that a digital printing of the outer wall of the hollow body is possible in a high accuracy. The digital printing (digital printing) replaces the previously applied with a process color and decor of the outer wall of the hollow body.

Die Erfindung betrifft den Spanndorn für rotationssymmetrische Hohlkörper, insbesondere für aus Rumpf und Boden einstückig bestehenden Dosen, meist mit einem domförmig nach innen gewölbten Boden.The invention relates to the mandrel for rotationally symmetrical hollow body, in particular for integrally formed from the hull and bottom doses, usually with a dome-shaped inwardly curved bottom.

Es ist bekannt, dass für die Bearbeitung, insbesondere für das Bedrucken oder Dekorieren der Außenfläche von derartigen Hohlkörpern, eine exakt gesteuerte, zumeist schrittweise, Bewegung oder Rotation des Hohlkörpers für die Genauigkeit und Zuverlässigkeit der Bearbeitung der Außenfläche außerordentlich wichtig ist, vgl. US-A 6,767,357 (J. Finan ).It is known that for the processing, in particular for printing or decorating the outer surface of such hollow bodies, an exactly controlled, usually stepwise, movement or rotation of the hollow body for the accuracy and reliability of the processing of the outer surface is extremely important, cf. US Pat. No. 6,767,357 (J. Finan ).

Dieses zu erreichen, auch bei hoher Geschwindigkeit der Bearbeitung und/oder des Hohlkörperwechsels, ist Aufgabe der Erfindung.To achieve this, even at high speed of processing and / or the hollow body change, is an object of the invention .

Diese Aufgabe wird durch einen Spanndorn mit den Merkmalen des Anspruchs 1 gelöst, alternativ mit den Verfahren nach Anspruch 11 oder Anspruch 12.This object is achieved by a mandrel having the features of claim 1, alternatively by the method of claim 11 or claim 12.

Die Spann- und Haltekräfte werden synchron und gleichmäßig im Inneren des Hohlkörpers, insbesondere der Dose wirksam, und so mit entsprechendem radialen Druck Dorn und Dose zu einer Bewegungseinheit vereinigen, deren Bewegungen mit höchster Genauigkeit steuerbar ist. Jede Gefahr für eine bleibende Verformung der Dose, wie sie bei Halten von außen oder nur an den Stirnseiten auftreten kann, ist ausgeschlossen. Die zur gesteuerten Bewegung der Spannelemente verwendeten Teile und Einrichtungen befinden sich im Inneren des Spanndornes.The clamping and holding forces are synchronously and uniformly in the interior of the hollow body, in particular the can effectively, and combine with corresponding radial pressure mandrel and box to a motion unit whose movements can be controlled with high accuracy. Any risk of permanent deformation of the can, as it can occur when holding from outside or only at the end faces, is excluded. The parts and devices used for the controlled movement of the clamping elements are located inside the mandrel.

Besonders vorteilhaft im Hinblick auf Einfachheit, Zeitaufwand und Wirksamkeit sind Unterdruck und Kopplung auf den Hohlkörper (Anspruch 2 und Anspruch 3). Einmal sind Anlegung und Steuerung von Unterdruck bzw. Überdruck im Inneren des Dornes ohne großen Aufwand und mit großer Exaktheit und Geschwindigkeit möglich. Zum anderen wird damit zugleich das Auffädeln und Abstoßen des Hohlkörpers auf den Dorn bzw. vom Dorn ohne zusätzliche Mittel erreicht.Particularly advantageous in terms of simplicity, time and efficiency are negative pressure and coupling to the hollow body (claim 2 and claim 3). Once application and control of negative pressure or pressure in the interior of the mandrel without great effort and with great accuracy and speed are possible. To the another is thus at the same time the threading and repelling of the hollow body on the mandrel or mandrel without additional means achieved.

Dabei wird der Boden des Hohlkörpers im Zusammenwirken mit der freien Stirnseite des Dornes als eine Art Ventilelement genutzt, das selbsttätig dafür sorgt, dass beim Auffädeln der Dose auf den Dorn mittels Unterdruck der Boden sich an die Dornstirnseite legt, der Unterdruck wirksam wird, um die Spannsegmente radial nach außen zu bewegen, wodurch sie sich unter Druck an die Innenwand der Dose legen (Anspruch 11, Anspruch 12).In this case, the bottom of the hollow body is used in conjunction with the free end face of the mandrel as a kind of valve element that automatically ensures that when threading the can on the mandrel by means of negative pressure, the soil is applied to the mandrel end, the negative pressure is effective to the Clamping segments to move radially outward, whereby they put under pressure against the inner wall of the can (claim 11, claim 12).

Das beanspruchte Verfahren zum stellungsgenauen Positionieren und zur gesteuerten - vorzugsweise schrittweisen - Präzisionsbewegung von rotationssymmetrischen, aus Rumpf und Boden "einstückig bestehenden" (ohne Falznaht im Bodenbereich) Hohlkörpern, insbesondere Getränkedosen, auch mit nach innen gewölbtem Boden, wird ermöglicht durch das erreichte genaue Spannen. Es geht um eine genaue Festlegung ohne die Gefahr einer Beschädigung oder Verformung des Werkstückes. Dies ermöglicht die Verfahrensweise nach Anspruch 11 beziehungsweise die nach Anspruch 12.The claimed method for positionally accurate positioning and controlled - preferably gradual - precision movement of rotationally symmetric, of hull and bottom "integral" (without seam in the bottom area) hollow bodies, especially beverage cans, even with inwardly curved bottom, is made possible by the achieved exact clamping , It is about a precise definition without the risk of damage or deformation of the workpiece. This allows the procedure according to claim 11 or according to claim 12.

Die Genauigkeit des Spannens kann so umschrieben werden, dass damit auch eine gleichbedeutende Genauigkeit der Bewegungsübertragung erreicht wird, in einem Sinne, der "geeignet für digitale Bedruckung" genannt werden kann.The accuracy of the clamping can be rewritten to achieve the same accuracy of motion transmission, in a sense that can be called "suitable for digital printing".

Eine Ruhelage der Spanneinrichtung wird durch eine Rückhohlkraft erreicht (Anspruch 14). Sie zieht die Kraft-Übertragungseinrichtung in eine Ruhelage zurück. Diese ist jedenfalls geeignet, auch schwankende Durchmesser der Hohlkörper auszugleichen, die mit ihren schwankenden Durchmesser auf den Dorn aufgeschoben werden können.A rest position of the clamping device is achieved by a return hollow force (claim 14). It pulls the power transmission device back to a rest position. This is in any case suitable to compensate for fluctuating diameter of the hollow body, which can be pushed with their varying diameter on the mandrel.

Die Kopplung der Kraft auf die angesaugte und gehaltene Dose als Beispiel eines Hohlkörpers mit dünner Wand wird bevorzugt so verbessert, dass der Spanndorn eine Stirnfläche aufweist, die zumindest im Bereich des Austritts der axialen Bohrung auf die Form des Dosenbodens angepasst ist. Eine domförmige Wölbung nach innen (bei der Dose) ist eine domförmige Wölbung nach innen (beim Spanndorn) in axialer Richtung.The coupling of the force to the sucked and held can as an example of a hollow body with a thin wall is preferably improved so that the mandrel has an end face which is adapted at least in the region of the outlet of the axial bore to the shape of the can bottom. A dome-shaped curvature inwards (at the box) is a dome-shaped curvature inwards (at the mandrel) in the axial direction.

Die Erfindung wird nachfolgend anhand schematischer Zeichnungen an mehreren Ausführungsbeispielen näher beschrieben:

Figur 1
zeigt in perspektivischer Ansicht einen Spanndorn gemäß einem ersten Beispiel der Erfindung.
Figur 2
zeigt schematisch eine Seitenansicht des Spanndorns in einem größeren Maßstab.
Figur 3
zeigt einen schematischen Längsschnitt durch den Spanndorn.
The invention will be described in more detail below with reference to schematic drawings of several exemplary embodiments:
FIG. 1
shows in perspective view a mandrel according to a first example of the invention.
FIG. 2
shows schematically a side view of the mandrel on a larger scale.
FIG. 3
shows a schematic longitudinal section through the mandrel.

Die eigentliche Spannfläche des Spanndorns 1 wird durch mehrere, vorzugsweise gleich ausgebildete Spannsegmente 2a, 2b, 2c usw. (kurz: 2) gebildet, die jeweils eine teilzylindrische Außenfläche aufweisen und damit gemeinsam eine zylindrische Spannfläche bilden. Sie erstrecken sich über die ganze Länge des Dornes 1 und sind an dem Grundkörper des Dornes in radialer Richtung beweglich geführt.The actual clamping surface of the mandrel 1 is formed by a plurality of preferably identically formed clamping segments 2a, 2b, 2c, etc. (in short: 2), each having a part-cylindrical outer surface and thus together form a cylindrical clamping surface. They extend over the entire length of the mandrel 1 and are movably guided on the main body of the mandrel in the radial direction.

Der Grundkörper besteht aus einer zentralen, sich über die gesamte Länge des Dornes und über eines seiner Stirnenden hinaus erstreckenden Welle 3, auf der im entsprechenden axialen Abstand zwei Stirnwandelemente 6 und 7 befestigt sind, zwischen denen sich die Spannelemente 2 erstrecken. Das Stirnwandelement 7 am freien Stirnende des Dornes 1 weist einen sich axial eine Strecke weit ins Innere des Dornes erstreckende zylindrische Wand 11 auf.The main body consists of a central, extending over the entire length of the mandrel and beyond one of its front ends out shaft 3, on the corresponding axial distance two end wall elements 6 and 7 are fixed, between which the clamping elements 2 extend. The end wall element 7 at the free front end of the mandrel 1 has a cylindrical wall 11 extending axially a distance far into the interior of the mandrel.

Die Welle 3 weist eine durchgehende axiale Bohrung 4 auf, die bündig mit dem freien Ende 5 der Welle 3 und der Außenfläche 7a des Stirnwandelementes endet. Im axialen Abstand von diesem Ende 5 und im Bereich der zylindrischen Wand 11 weist die Welle 3 radiale Bohrungen 21 auf, die mit der axialen Bohrung 4 in Verbindung stehen. Etwas weiter axial dem Dorninneren zu ist auf der Welle 3 axial begrenzt verschiebbar ein scheibenförmiger Wandteil 10 angeordnet, der über einen Ringteil 12 abdichtend und gleitend an der zylindrischen Wand 11 geführt ist.The shaft 3 has a continuous axial bore 4 which terminates flush with the free end 5 of the shaft 3 and the outer surface 7a of the end wall element. At an axial distance from this end 5 and in the region of the cylindrical wall 11, the shaft 3 has radial bores 21, which are in communication with the axial bore 4. Slightly further axially to the mandrel interior is on the shaft 3 axially slidably disposed a disk-shaped wall part 10 which is sealingly and slidably guided over a ring member 12 on the cylindrical wall 11.

Mit dem scheibenförmigen Wandteil 10 ist fest verbunden ein rotationssymmetrischer Steuer- oder Betätigungsteil 13. Während das Stirnwandelement 7 mit der zylindrischen Wand 11 und dem scheibenförmigen Wandteil 10 eine Druckkammer 9 bilden, befindet sich der Steuerteil 13 axial außerhalb der Druckkammer 9, bildet aber zusammen mit dem scheibenförmigen Wandteil 10 eine Kraft-Übertragungseinrichtung, wie sogleich noch näher erläutert wird. Der Steuerteil 13 weist eine axiale Bohrung 13a auf, deren Durchmesser deutlich größer als der Außendurchmesser der Welle 3 ist. Mittels zwischengeschalteter Lagerhülsen 20 ist der Steuerteil 13 auf der Welle axial verschieblich geführt und kann so selber den scheibenförmigen Antriebsteil 10 tragen und führen.While the end wall element 7 with the cylindrical wall 11 and the disk-shaped wall part 10 form a pressure chamber 9, the control part 13 is axially outside the pressure chamber 9, but forms together with the disk-shaped wall part 10 is a force transmission device, as will be explained in more detail immediately. The control part 13 has an axial bore 13 a, whose Diameter is significantly larger than the outer diameter of the shaft 3. By means of interposed bearing sleeves 20 of the control part 13 is guided axially displaceably on the shaft and can thus carry the disc-shaped drive member 10 and lead.

Der Steuerteil weist eine in axialer Richtung leicht konisch verlaufende Außenfläche 19 auf.The control part has a slightly tapered outer surface 19 in the axial direction.

Wie aus Figur 3 ersichtlich, weisen die Spannsegmente 2 auf ihrer Innenseite eine entsprechende, d.h. zu der Fläche 19 parallel konische Fläche 17 auf. Diese kann, wie dargestellt auch an gesonderten, aber mit den Spannsegmenten fest verbundenen Elementen vorgesehen sein.As can be seen from Figure 3, the clamping segments 2 on its inside a corresponding, i. to the surface 19 parallel conical surface 17. This can, as shown on separate, but be provided with the clamping segments firmly connected elements.

In dem konischen Zwischenraum zwischen den sich gegenüberliegenden Flächen 17 und 19 sind entsprechende Stütz- und Kraft-Übertragungs-Elemente 18 angeordnet, die mit einem der beiden Teile 2 bzw. 13 fest verbunden sind.In the conical space between the opposing surfaces 17 and 19 corresponding support and power transmission elements 18 are arranged, which are fixedly connected to one of the two parts 2 and 13 respectively.

Die radiale Bewegung der Spannsegmente 2 wird mittels Unterdruck zum Spannen und Überdruck zum Lösen der Spannung bewirkt. Beide Drücke werden über die axiale Bohrung 4 der Welle 3 wirksam.The radial movement of the clamping segments 2 is effected by means of negative pressure for clamping and overpressure for releasing the voltage. Both pressures are effective via the axial bore 4 of the shaft 3.

Beide Drücke werden dazu genutzt, eine einstückig aus Boden und Rumpf bestehende Dose axial auf den Dorn aufzubringen und von diesem abzustoßen. Dabei wird der Dosenboden zusammen mit der Außenfläche des Stirnwandelements 7 verwendet, um automatisch die Spannbewegung der Spannsegmente 2 erst auszulösen, wenn die Dose ordnungsmäßig auf den Dorn axial aufgefädelt ist und den Ausstoßvorgang erst zu beginnen, wenn die Spannsegmente die Dose entsprechend freigegeben haben.Both pressures are used to axially apply a one-piece from the bottom and hull box on the mandrel and repel it. In this case, the can bottom is used together with the outer surface of the end wall element 7 to automatically trigger the clamping movement of the clamping segments 2 only when the can is properly threaded axially onto the mandrel and to start the ejection process only when the clamping segments have released the can accordingly.

Die Außenfläche 7a, 7b des Stirnwandelementes 7 ist so ausgebildet, dass sie mit dem fest anliegenden Dosenboden eine ringfömige flächige Berührung aufweist, die ein Ansaugen von Luft von außen durch den anliegenden Unterdruck stoppt, so dass nunmehr der Unterdruck über die Radialbohrungen 21 und die Kammer 9 auf den scheibenförmigen Wandteil 10 wirkt und diesen zusammen mit dem Steuerteil 13 in Fig. 3 nach links bewegt. Über die zusammenwirkenden konischen Flächen werden dabei die Spannsegmente 2 radial nach außen bewegt.The outer surface 7a, 7b of the end wall element 7 is formed so that it has a ringfömige surface contact with the firmly fitting bottom of the can, which stops a suction of air from the outside by the applied negative pressure, so now the negative pressure on the radial bores 21 and the chamber 9 acts on the disc-shaped wall part 10 and this moves together with the control part 13 in Fig. 3 to the left. The clamping segments 2 are moved radially outward via the cooperating conical surfaces.

Eine gute Kopplung wird erreicht, wenn die form des domförmigen Bodens des Hohlkörpers, der nicht dargestellt, aber allgemein bekannt ist, auf die Form der Stirnseite des Spanndorns abgestellt ist. Eine konkav/konvexe Anpassung ist geeignet.A good coupling is achieved when the shape of the dome-shaped bottom of the hollow body, which is not shown, but generally known, is placed on the shape of the end face of the mandrel. A concave / convex fit is appropriate.

Wenn die Dose gelöst werden soll, wird über die axiale Bohrung 4 Druckluft in die Kammer 9 geleitet. Diese verschiebt die Teile 10 und 13 und löst die Haltekraft der Spannsegmente 2. Hört diese Haltekraft auf wirkt die Druckluft über das Ende der Bohrung 4 auf den Dosenboden und stößt damit die Dose vom Dorn ab.When the can is to be released, 4 compressed air is passed into the chamber 9 via the axial bore. This shifts the parts 10 and 13 and releases the holding force of the clamping segments 2. If this holding force stops the compressed air acts on the end of the bore 4 on the bottom of the can and repels the can from the mandrel.

Die Rückhohlbewegung der Stelleinrichtung kann durch eine Feder 40 erreicht werden. Diese ist zwischen dem Steuerteil 13 und dem Stirnwandelement 96) angeordnet. Sie erreicht, dass das Steuerteil (13) nach einem Abblasen des Hohlkörpers in eine Ruhelage gebracht wird, sogenannte Nullposition, und nicht in einem undefinierten axialen Stellungszustand stehen bleibt. Damit kann der nächste Hohlkörper einwandfrei aufgenommen werden und durch Toleranz verursachte Durchmesserschwankungen der Hohlkörpers ausgeglichen werden.The return movement of the adjusting device can be achieved by a spring 40. This is arranged between the control part 13 and the end wall element 96). It ensures that the control part (13) is brought into a rest position after a blow-off of the hollow body, so-called zero position, and does not remain in an undefined axial position state. Thus, the next hollow body can be properly absorbed and compensated by tolerance diameter fluctuations of the hollow body can be compensated.

Die Anordnung ist sehr einfach aufgebaut und arbeitet dennoch außerordentlich rasch und exakt. Die Hohlkörper werden von Innen her großflächig und sicher, aber auch schonend von den Spannsegmenten erfasst. Die notwendigen Bewegungsstrecken der beweglichen Teile des Dornes sind klein. Die Steuerung mittels Unterdruck und Überdruck ist einfach und zuverlässig.The arrangement is very simple and yet works extremely fast and accurate. The hollow bodies are covered from the inside over a large area and safely, but also gently by the clamping segments. The necessary movement distances of the moving parts of the mandrel are small. The control by means of negative pressure and overpressure is simple and reliable.

In der Spannstellung bilden Dose und Dorn eine funktionelle Einheit, die durch gesteuerte Bewegung der Welle 3 in jeder Richtung und mit jeder Schrittweite und Schrittgeschwindigkeit zuverlässig bewegt werden kann.In the clamping position, the can and mandrel form a functional unit that can be reliably moved by controlled movement of the shaft 3 in any direction and with every step and stepping speed.

Claims (16)

Spanndorn für einen rotationssymmetrischen Hohlkörper, insbesondere eine einstückig aus Rumpf und Boden bestehende Getränkedose, mit - mehreren, eine nach außen weisende zylindrische Spannfläche (16) bildenden Spannsegmenten (2,2a,2b,2c,2d,2e), zum Angreifen an eine Innenfläche des Hohlkörpers; - welche Spannelemente synchron radial bewegbar geführt sind; - einer im Inneren des Spanndorns (1) angeordneten Kraft-Übertragungseinrichtung (10,13) zur Steuerung einer Radialbewegung der Spannsegmente (2); - für eine gesteuerte Präzisions-Bewegung des gespannten Hohlkörpers. Mandrel for a rotationally symmetrical hollow body, in particular a one-piece consisting of hull and bottom beverage can, with - A plurality, an outwardly facing cylindrical clamping surface (16) forming clamping segments (2,2a, 2b, 2c, 2d, 2e), for engaging an inner surface of the hollow body; - Which clamping elements are guided synchronously radially movable; - One in the interior of the mandrel (1) arranged force transmission means (10,13) for controlling a radial movement of the clamping segments (2); - For a controlled precision movement of the tensioned hollow body. Spanndorn nach Anspruch 1, wobei die Kraftübertragungs-Einrichtung (10,13) zum Spannen durch Unterdruck und zum Lösen durch Überdruck betätigbar ist.Mandrel according to claim 1, wherein the power transmission means (10,13) for clamping by vacuum and for releasing by pressure is actuated. Spanndorn nach Anspruch 2, wobei die beiden zur Steuerung dienenden unterschiedlichen Druckkräfte zugleich jeweils zum Aufbringen des Hohlkörpers auf den Spanndorn (1) bzw. zum Abstoßen des Hohlkörpers vom Spanndorn (1) wirksam sind.Mandrel according to claim 2, wherein the two serving for controlling different pressure forces at the same time each for applying the hollow body to the mandrel (1) or for repelling the hollow body from the mandrel (1) are effective. Spanndorn nach einem der voranstehenden Ansprüche, wobei ein Grundkörper (3,6,7) mit einer rotierend antreibbaren Welle (3) mit einer in der freien Stirnfläche (5) der Welle mündenden Axialbohrung (4) und zwei in einem axialen Abstand auf der Welle fest angeordneten Stirnwandelementen (6,7), wobei das im Betrieb des Dorns dem Boden des Hohlkörpers zugewandte Stirnwandelement (7) mit seiner axialen Außenfläche (8) mit der Stirnfläche (5) der Welle (3) bündig abschließt, insbesondere angepasst an eine Form des Bodens des Hohlkörpers.Mandrel according to one of the preceding claims, wherein a base body (3,6,7) having a rotationally driven shaft (3) with an opening in the free end face (5) of the shaft axial bore (4) and two at an axial distance on the shaft fixed end wall elements (6,7), wherein in operation of the mandrel the bottom of the hollow body facing end wall element (7) with its axial outer surface (8) with the end face (5) of the shaft (3) is flush, in particular adapted to a shape the bottom of the hollow body. Spanndorn nach Anspruch 4, wobei auf der antreibbaren Welle (3) ein rotationssymmetrischer Steuerteil (13) der Kraftübertragungs-Einrichtung (10,13) axial verschieblich geführt ist, dessen äußere Umfangsfläche (19) in axialer Richtung konisch verläuft und in Abhängigkeit von einer relativen axialen Bewegung des Steuerteils (13) auf der Welle (3) diese Bewegung in eine entsprechende radiale synchrone Verstellbewegung der Spansegmente (2) umwandelt.Mandrel according to claim 4, wherein on the drivable shaft (3) a rotationally symmetrical control part (13) of the power transmission device (10,13) is axially displaceably guided, the outer peripheral surface (19) in the axial direction is conical and in dependence on a relative axial movement of the control part (13) on the shaft (3) converts this movement into a corresponding radial synchronous adjustment movement of the chip segments (2). Spanndorn nach Anspruch 5, wobei der Steuerteil (13) mit einer seiner Stirnseiten fest mit einem im Grundkörper (10,13) axial verschieblich geführten scheibenförmigen Antriebsteil (10) verbunden ist, der seinerseits gesteuert mit Druckluft bzw. mit Unterdruck beaufschlagbar ist.Mandrel according to claim 5, wherein the control part (13) with one of its end faces fixed to a in the main body (10,13) axially displaceably guided disk-shaped drive part (10) is connected, which in turn controlled by compressed air or vacuum can be acted upon. Spanndorn nach Anspruch 6, wobei der scheibenförmige Antriebsteil (10) eine bewegliche Begrenzungswand einer Druckkammer (9) bildet, welche andererseits durch die im Betrieb dem Boden des Hohlkörpers zugewandte kammerartig (11) erweiterte Stirnwand (7) begrenzt ist, wobei die Druckkammer (9) über radiale Bohrungen (21) in der Welle (3) mit deren Axialbohrung (4) verbunden ist.Mandrel according to claim 6, wherein the disk-shaped drive part (10) forms a movable boundary wall of a pressure chamber (9) which is bounded on the other hand by the chamber-like (11) extended end wall (7) facing the bottom of the hollow body during operation, the pressure chamber (9 ) is connected via radial bores (21) in the shaft (3) with the axial bore (4). Spanndorn nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass die Welle (3) außerhalb des Spanndorns (1) zusammen mit einer Mehrzahl gleicher Dorne in einem in Index-Schritten drehbarem Trägerkopf gelagert und an ihrem Ende mit einem eigenen steuerbaren, schrittweise arbeitenden Antrieb ausgerüstet ist, und ihre Axialbohrung (4) gesteuert mit einer Quelle für höheren oder niederen Druck verbindbar ist.Mandrel according to one of claims 2 to 7, characterized in that the shaft (3) outside of the mandrel (1) mounted together with a plurality of identical mandrels in a rotatable in index increments carrier head and at its end with its own controllable, step by step Drive is equipped, and its axial bore (4) controlled by a source of higher or lower pressure is connectable. Spanndorn nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass der Steuerteil (13) über auf der Welle (3) angeordnete Gleitstücke (20) axial verschieblich geführt ist.Mandrel according to one of claims 5 to 8, characterized in that the control part (13) on the shaft (3) arranged sliders (20) is guided axially displaceable. Spanndorn nach einem der Ansprüche 5 bis 9, wobei (i) jedes Spannsegment (2a,2b) auf seiner Innenseite eine in axialer Richtung konische Innenfläche (17) aufweist oder mit einem eine solche Innenfläche aufweisenden Teil (15) fest verbunden ist, wobei die konische Innenfläche (17) parallel zu der konischen Außenfläche (19) des Steuerteils (13), jedoch beabstandet von dieser verläuft, (ii) jedes Spannsegment (2a,2b; ...) im Bereich der konischen Innenfläche (17) mit gegenüber der konischen Außenfläche (19) gleitend bewegbaren Gleitstücken (18) fest verbunden ist. Mandrel according to one of claims 5 to 9, wherein (i) each clamping segment (2a, 2b) has on its inner side a conical inner surface (17) in the axial direction or is fixedly connected to a part (15) having such inner surface, the conical inner surface (17) being parallel to the conical outer surface (19) of the control part (13), but spaced from this, (ii) each clamping segment (2a, 2b, ...) in the region of the conical inner surface (17) with respect to the conical outer surface (19) slidingly movable sliders (18) is firmly connected. Verfahren zum stellungsgenauen Positionieren und zur gesteuerten - vorzugsweise schrittweisen - Präzisionsbewegung von rotations-symmetrischen Hohlkörpern, insbesondere aus Rumpf und Boden bestehenden einstückigen Dosen, wobei ein jeweiliger Hohlkörper an seiner rotationssymmetrischen Innenfläche im Wesentlichen ganzflächig, insbesondere von synchron angestellten zugeordneten Spannflächen (2a,2b;...), mit radial wirkenden Spannkräften erfasst oder/und von diesen synchron abgestellt freigegeben wird.A method for positionally accurate positioning and the controlled - preferably stepwise - precision movement of rotationally symmetrical hollow bodies, in particular consisting of hull and floor one-piece cans, wherein a respective hollow body on its rotationally symmetrical inner surface substantially over the entire surface, in particular of synchronously employed associated clamping surfaces (2a, 2b; ...), detected with radially acting clamping forces and / or released synchronously. Verfahren zum stellungsgenauen Positionieren und zur gesteuerten - vorzugsweise schrittweisen - Präzisionsbewegung von rotationssymmetrischen, aus Rumpf und Boden einstückig ausgebildeten Hohlkörpern mit Hilfe eines gesteuert bewegbaren Spanndorns für jeden Hohlkörper, bei dem - der jeweilige Hohlkörper über Unterdruck auf den Spanndorn (2) aufgebracht und axial auf diesem positioniert wird; - der Hohlkörper von demselben Unterdruck synchron unter radial von Innen nach Außen wirkender Druckkraft zu einer Bewegungseinheit mit dem Spanndorn verspannt wird. A method for positionally accurate positioning and the controlled - preferably stepwise - precision movement of rotationally symmetrical, integrally formed from the hull and bottom hollow bodies by means of a controlled movable mandrel for each hollow body, in which - The respective hollow body is applied via vacuum on the mandrel (2) and is positioned axially on this; - The hollow body of the same negative pressure synchronously under radially acting from inside to outside pressure force is clamped to a moving unit with the mandrel. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass die Bewegungseinheit von Spanndorn und Hohlkörper mit Hilfe von Druckluft gelöst und der Hohlkörper mit der selben Druckluft von dem Spanndorn axial entfernt wird.A method according to claim 12, characterized in that the movement unit of mandrel and hollow body solved by means of compressed air and the hollow body with the same compressed air from the mandrel is axially removed. Verfahren oder Spanndorn nach einem der vorigen Ansprüche, wobei der Steuerteil (13) als Kraftübertragungseinrichtung mit einer Rückholeinrichtung (40) belastet ist, welche eine axiale Kraft von dem Hohlkörper oder der vorderen Stirnseite (5,7) weg nach axial rückwärts aufbringt.Method or mandrel according to one of the preceding claims, wherein the control part (13) is loaded as a force transmission device with a return device (40) which applies an axial force away from the hollow body or the front end side (5,7) axially backwards. Verfahren oder Spanndorn nach vorigem Anspruch, wobei die Rückhohleinrichtung eine Feder ist, die bevorzugt in der zurückgezogenen Ruhestellung des Steuerteils (13) vorgespannt ist.A method or mandrel according to the preceding claim, wherein the Rückhohleinrichtung is a spring which is preferably biased in the retracted position of rest of the control part (13). Verfahren oder Spanndorn nach einem der vorigen Ansprüche 14 oder 15, wobei der Steuerteil (13) durch die axiale Kraftbelastung nach einem jeweiligen Abnehmen eines Hohlkörpers von dem Spanndorn in eine neutrale Ruhelage zurückgeholt wird, die so positioniert ist, dass auch im Durchmesser schwankende Hohlkörper von dem Spanndorn in der Ruhelage der Steuereinrichtung axial aufgenommen werden können.Method or mandrel according to one of the preceding claims 14 or 15, wherein the control part (13) is retrieved by the axial force load after a respective removal of a hollow body of the mandrel in a neutral rest position, which is positioned so that even in diameter fluctuating hollow body of the mandrel in the rest position of the control device can be axially received.
EP05110323A 2005-11-03 2005-11-03 Mandrel for digital printing Active EP1782951B8 (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
AT05110323T ATE380658T1 (en) 2005-11-03 2005-11-03 Clamping mandrel for digital printing
DE502005002250T DE502005002250D1 (en) 2005-11-03 2005-11-03 Mandrel for digital printing
PL05110323T PL1782951T3 (en) 2005-11-03 2005-11-03 Mandrel for digital printing
EP05110323A EP1782951B8 (en) 2005-11-03 2005-11-03 Mandrel for digital printing
ES05110323T ES2298951T3 (en) 2005-11-03 2005-11-03 SUBJECTION CLAMP FOR DIGITAL PRINTING.
US12/092,530 US8708271B2 (en) 2005-11-03 2006-11-03 Mandrel used for digital printing on can members
UAA200807572A UA95618C2 (en) 2005-11-03 2006-11-03 Clamping mandrel for digital printing on jar body
CN2006800503292A CN101351340B (en) 2005-11-03 2006-11-03 Mandrel used for digital printing on can members, its positioning and control method
PCT/EP2006/068090 WO2007051848A1 (en) 2005-11-03 2006-11-03 Mandrel used for digital printing on can members
NZ568203A NZ568203A (en) 2005-11-03 2006-11-03 Clamping mandrel for digital printing on can bodies
JP2008539410A JP5300484B2 (en) 2005-11-03 2006-11-03 Mandrels used for digital printing on containers
AU2006310477A AU2006310477B2 (en) 2005-11-03 2006-11-03 Mandrel used for digital printing on can members
BRPI0618252-6A BRPI0618252B1 (en) 2005-11-03 2006-11-03 FIXING FRAME FOR CANAL BODY DIGITAL PRINTING
CA2628334A CA2628334C (en) 2005-11-03 2006-11-03 Mandrel used for digital printing on can members
RU2008122059/12A RU2422287C2 (en) 2005-11-03 2006-11-03 Clamping holder for digital printing on can body
IL191223A IL191223A (en) 2005-11-03 2008-05-01 Mandrel for use for digital printing on can members
ZA200804453A ZA200804453B (en) 2005-11-03 2008-05-22 Mandrel used for digital printing on can members

Applications Claiming Priority (1)

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EP05110323A EP1782951B8 (en) 2005-11-03 2005-11-03 Mandrel for digital printing

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EP1782951A1 true EP1782951A1 (en) 2007-05-09
EP1782951B1 EP1782951B1 (en) 2007-12-12
EP1782951B8 EP1782951B8 (en) 2008-05-28

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ID=36090912

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US (1) US8708271B2 (en)
EP (1) EP1782951B8 (en)
JP (1) JP5300484B2 (en)
CN (1) CN101351340B (en)
AT (1) ATE380658T1 (en)
AU (1) AU2006310477B2 (en)
BR (1) BRPI0618252B1 (en)
CA (1) CA2628334C (en)
DE (1) DE502005002250D1 (en)
ES (1) ES2298951T3 (en)
IL (1) IL191223A (en)
NZ (1) NZ568203A (en)
PL (1) PL1782951T3 (en)
RU (1) RU2422287C2 (en)
UA (1) UA95618C2 (en)
WO (1) WO2007051848A1 (en)
ZA (1) ZA200804453B (en)

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CN115872237A (en) * 2022-12-30 2023-03-31 浙江晶达建材科技有限公司 Heat-insulating flame-retardant asphalt tile preparation device
CN115872237B (en) * 2022-12-30 2023-08-22 浙江晶达建材科技有限公司 Heat-insulating flame-retardant asphalt tile preparation device

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US20080282913A1 (en) 2008-11-20
BRPI0618252A2 (en) 2011-08-23
WO2007051848A1 (en) 2007-05-10
JP5300484B2 (en) 2013-09-25
ES2298951T3 (en) 2008-05-16
AU2006310477B2 (en) 2011-08-18
ATE380658T1 (en) 2007-12-15
UA95618C2 (en) 2011-08-25
ZA200804453B (en) 2009-02-25
CN101351340A (en) 2009-01-21
AU2006310477A1 (en) 2007-05-10
DE502005002250D1 (en) 2008-01-24
CA2628334C (en) 2014-12-16
PL1782951T3 (en) 2008-05-30
WO2007051848A9 (en) 2007-08-16
CN101351340B (en) 2010-12-29
EP1782951B8 (en) 2008-05-28
RU2422287C2 (en) 2011-06-27
JP2009514707A (en) 2009-04-09
NZ568203A (en) 2010-10-29
BRPI0618252B1 (en) 2018-05-22
RU2008122059A (en) 2009-12-20
EP1782951B1 (en) 2007-12-12
IL191223A (en) 2010-12-30
US8708271B2 (en) 2014-04-29
CA2628334A1 (en) 2007-05-10

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