EP3760376B1 - Utilisation d'un dispositif tendeur rotatif - Google Patents

Utilisation d'un dispositif tendeur rotatif 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
Authority
EP
European Patent Office
Prior art keywords
sheet metal
clamping device
tensioning unit
expansion vessel
rolled sheet
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.)
Active
Application number
EP20176731.6A
Other languages
German (de)
English (en)
Other versions
EP3760376C0 (fr
EP3760376A1 (fr
Inventor
Wolfgang Meiser
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.)
Gebr Meiser GmbH
Original Assignee
Gebr Meiser GmbH
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Publication date
Application filed by Gebr Meiser GmbH filed Critical Gebr Meiser GmbH
Publication of EP3760376A1 publication Critical patent/EP3760376A1/fr
Application granted granted Critical
Publication of EP3760376C0 publication Critical patent/EP3760376C0/fr
Publication of EP3760376B1 publication Critical patent/EP3760376B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • 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.

Landscapes

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

Claims (3)

  1. Utilisation d'un dispositif de serrage rotatif (0), composé d'au moins une unité de serrage (1) et de l'élément de maintien correspondant et qui relie mécaniquement l'unité de serrage à une table (15), l'unité de serrage (1) étant doté d'un récipient expansible (3) pouvant être rempli par un fluide sous pression, pour le revêtement de bandes de tôle (6) laminées en forme de cercle, caractérisée en ce que
    - au moins une bande de tôle (6) laminée en forme de cercle est fixée sur l'unité de serrage (1) au moyen d'un dispositif de blocage (2) disposé longitudinalement sur la périphérie du récipient expansible (3),
    - le récipient expansible (3) est rempli d'air comprimé,
    - les bandes de tôle (6) laminées en forme de cercle sont revêtues,
    - l'air comprimé est évacué du récipient expansible (3),
    - les bandes de tôle (6) laminées en forme de cercle sont détachées de l'unité de serrage (1).
  2. Utilisation selon la revendication 1, caractérisée en ce que les moyens de maintien sont dotés de moyens pour faire tourner l'unité de serrage (1) autour de son axe central radial, par l'intermédiaire desquels l'unité de serrage est mise en rotation, de sorte que la bande de tôle (6) laminée en forme d'anneau circulaire se déplace autour de son propre axe.
  3. Utilisation selon l'une des revendications précédentes, caractérisée en ce que le récipient expansible (3) s'adapte individuellement, grâce à sa surface flexible, aux tolérances dimensionnelles des bandes de tôle (6) en maintenant une pression constante et réglable de manière sensible, ce qui empêche le mouillage de la surface intérieure des bandes de tôle (6) laminées en forme d'anneau circulaire par le revêtement appliqué.
EP20176731.6A 2019-05-27 2020-05-27 Utilisation d'un dispositif tendeur rotatif Active EP3760376B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019114066.8A DE102019114066A1 (de) 2019-05-27 2019-05-27 Vorrichtung und Verfahren zur Beschichtung von kreisförmig gewalzten Blechstreifen

Publications (3)

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

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20176731.6A Active EP3760376B1 (fr) 2019-05-27 2020-05-27 Utilisation d'un dispositif tendeur rotatif

Country Status (2)

Country Link
EP (1) EP3760376B1 (fr)
DE (1) DE102019114066A1 (fr)

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 (de) * 1958-03-18 1964-06-04 Walbersdorf Sondermaschb Spannvorrichtung, insbesondere fuer empfindliche, beispielsweise duennwandige Werkstuecke
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 (de) * 1988-03-28 1989-10-19 Gerd Goebel Dichtkissen zum verstopfen von oeffnungen und durchgaengen
DE10220251B4 (de) * 2002-05-06 2004-07-29 Haro, Jürgen Aufblasbares Rohrdichtkissen
EP2163345B1 (fr) * 2008-09-12 2013-02-20 Schunk GmbH & Co. KG Spann- und Greiftechnik Système et dispositif de serrage avec un évidement central pour retenir une pièce
WO2015123128A1 (fr) * 2014-02-11 2015-08-20 Empire Robotics, Inc. Dispositifs de préhension de blocage et procédés d'utilisation

Also Published As

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

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