EP2499075B1 - Clamping device for a shaft and method for clamping same - Google Patents
Clamping device for a shaft and method for clamping same Download PDFInfo
- Publication number
- EP2499075B1 EP2499075B1 EP10776107.4A EP10776107A EP2499075B1 EP 2499075 B1 EP2499075 B1 EP 2499075B1 EP 10776107 A EP10776107 A EP 10776107A EP 2499075 B1 EP2499075 B1 EP 2499075B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- lever
- shaft
- clamping
- winding shaft
- 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
Links
- 238000000034 method Methods 0.000 title claims description 11
- 238000004804 winding Methods 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 description 3
- 241001295925 Gegenes Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/02—Supporting web roll
- B65H18/028—Both ends type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/413—Supporting web roll
- B65H2301/41308—Releasably clamping the web roll shaft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the invention relates to a clamping device for a shaft and a method for clamping such.
- the apparatus and methods may be used initially in all possible fields of technology. However, they are particularly suitable when storing and holding winding shafts. Here is a special place to use the winding shaft pulling device.
- chucks are required with high clamping forces. So far, for example, used wedge hook feed, which are operated hydraulically or with very large pneumatic cylinders. Alternatively, clamping devices are used, which are closed by means of motor spindles.
- wedge hook chucks can apply large clamping forces, they only have a small stroke. Furthermore, these are very expensive. If these are operated hydraulically, an additional hydraulic unit is required. In addition, hydraulic units in the production of z. As food films that are wound in the respective winding device, not gladly seen. As an alternative to using large pneumatic cylinders are very expensive.
- the DE 1270917 B also shows a device for holding a winding shaft, wherein the winding shaft can be fixed by the employment of at least one body in a receptacle.
- the power for the employment is transmitted with a lever on the body, which is rotatably mounted about a first axis.
- the expert has by tuning the leverage an optimization range between a small travel and a large contact force and a large travel and a small contact force.
- the object of the present invention is therefore to propose an apparatus and a method which overcomes or at least reduces the described disadvantages of the known device.
- a lever is provided in the device, which is rotatably mounted about a first axis.
- a stationary positioning and / or a first axis which is parallel to the holding position of the shaft to be held in its receptacle, are advantageous.
- this device comprises components that are necessary to quasi connect the lever to a second axis of rotation. This can be done by a body that has a round or curved surface, is made with this surface against the lever. Alternatively or additionally, a bore or recess may be provided in the lever, in which a body engages, which then defines the second axis.
- stops which in turn are movable, may be provided. If these are fixable in the effective range of the lever, they can be fixed with the
- Lever affect executable pivoting movements. It is advantageous if the lever presses against a clamping jaw, which in turn determines the shaft.
- the lever which is rotatably mounted about a first axis, is moved relative to the shaft.
- the shaft when the shaft is locked, it will be moved towards and moved away from it when the shaft is released.
- the lever Before performing the rotational movement about the lever, the lever can perform a linear movement relative to the shaft.
- Fig. 1 shows a sketch of a device according to the invention in a first working position, in which the shaft 8 is located in the receptacle 3, without being held.
- rails 1 are provided, on which the carriage 2 can slide in the vertical direction back and forth. With this carriage, the stops 4, the clamping jaws 3 and the first axis 10 of the lever 5 are movable. With correspondingly long rails 1 of this type can be achieved in the apparatus shown long opening distances.
- the lever 5 can from the cylinder 7, which is preferably a pneumatic cylinder over the Piston 14 and the pivot point 13 of the piston get his manpower mediated.
- FIG. 2 it can already be seen how the piston 14 of the cylinder 7 is retracted into the cylinder (arrow 15). This leads to the direction indicated by the arrow 16 movement of the carriage 2, in which the clamping jaws 3 is employed against the shaft 8.
- FIG. 3 is shown how the situation by the continuation of the movement of the piston 14 shown by the arrow 14 changes in the cylinder 8: After the translation of the carriage has come to an end, since the jaw 3 has reached the shaft, it comes to a shown by the arrow 17 short further rotation about the first axis 9 until the lever 5 arrives on the left stop 4 '. The producible in this situation clamping forces on the shaft 8, however, are limited due to the leverage.
- the clamping disk 6 is pivoted about the axis 12 - as shown by the arrow 18 - in a working position.
- a second axis of rotation 10 which is represented here by the circle 10 and 10 would, however, move by the rolling movement of the lever 5 on the cam 6 along the contact surface between the two bodies 5, 6.
- the linkage 12 is usually fixedly attached to the machine frame of the winding device and withstands great forces.
- no movement is intended by a larger amount, but the introduction of the second rotation axis 10 leads to a significant change in the leverage over the situation in FIG.
Landscapes
- Winding Of Webs (AREA)
- Clamps And Clips (AREA)
Description
Die Erfindung betrifft eine Spannvorrichtung für eine Welle und ein Verfahren zum Einspannen einer solchen.
Die Vorrichtung und Verfahren können zunächst in allen möglichen Bereichen der Technik benutzt werden. Besonders geeignet sind sie jedoch beim Lagern und Halten von Wickelwellen. Hier ist ein besonderer Einsatzort die Wickelwellenziehvorrichtung.The invention relates to a clamping device for a shaft and a method for clamping such.
The apparatus and methods may be used initially in all possible fields of technology. However, they are particularly suitable when storing and holding winding shafts. Here is a special place to use the winding shaft pulling device.
Um Wickelwellen in der Wickelwellenziehvorrichtung einseitig zu halten, werden Spannfutter mit hohen Spannkräften benötigt.
Dafür benutzt man bisher z.B. Keilhakenfutter, welche hydraulisch bzw. mit sehr großen Pneumatikzylindern betätigt werden.
Alternativ dazu werden Spannvorrichtungen eingesetzt, die motorisch über Spindeln geschlossen werden.To keep winding shafts in the winding shaft pulling device on one side, chucks are required with high clamping forces.
So far, for example, used wedge hook feed, which are operated hydraulically or with very large pneumatic cylinders.
Alternatively, clamping devices are used, which are closed by means of motor spindles.
Keilhakenfutter können zwar große Spannkräfte aufbringen, haben dafür aber nur einen kleinen Hub. Weiterhin sind diese sehr teuer.
Wenn diese hydraulisch betätigt werden, ist zusätzlich ein Hydraulikaggregat erforderlich. Außerdem werden Hydraulikaggregate bei der Herstellung von z. B. Lebensmittelfolien, die in der betreffenden Wickelvorrichtung aufgewickelt werden, nicht gerne gesehen.
Alternativ zu verwendende große Pneumatikzylinder sind sehr teuer.Although wedge hook chucks can apply large clamping forces, they only have a small stroke. Furthermore, these are very expensive.
If these are operated hydraulically, an additional hydraulic unit is required. In addition, hydraulic units in the production of z. As food films that are wound in the respective winding device, not gladly seen.
As an alternative to using large pneumatic cylinders are very expensive.
Bei der Verwendung von Spannvorrichtungen mit Spindeltrieben hat man zwar große Verfahrwege, erreicht aber bei normaler Baugröße relativ geringe Spannkräfte. Ein weiteres Problem ist hierbei der Verschleiß an den Spindeltrieben infolge der Benutzung und das Öffnen der Spannvorrichtung aufgrund der Haftreibung.
Die
Die Kraft für die Anstellung wird mit einem Hebel auf den Körper übertragen, der um eine erste Achse drehbar gelagert ist. Bei solchen Vorrichtungen hat der Fachmann durch die Abstimmung der Hebelverhältnisse einen Optimierungsbereich zwischen einem kleinen Stellweg und einer großen Anstellkraft und einem großen Stellweg und einer kleinen Anstellkraft.
Die Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung und ein Verfahren vorzuschlagen, welche die geschilderten Nachteile der bekannten Vorrichtung behebt oder zumindest vermindert.Although the use of clamping devices with spindle drives you have great travels, but achieved at normal size relatively low clamping forces. Another problem here is the wear on the spindle drives as a result of use and the opening of the clamping device due to the static friction.
The
The power for the employment is transmitted with a lever on the body, which is rotatably mounted about a first axis. In such devices, the expert has by tuning the leverage an optimization range between a small travel and a large contact force and a large travel and a small contact force.
The object of the present invention is therefore to propose an apparatus and a method which overcomes or at least reduces the described disadvantages of the known device.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 und des Anspruchs 11 gelöst. Demnach ist in der Vorrichtung ein Hebel vorzusehen, der um eine erste Achse drehbar gelagert ist. Mit dieser Maßnahme lassen sich die Kräfte erhöhen und es ist möglich, auch große Stellbereiche zu erhalten.
Eine ortsfeste Positionierung und/oder eine erste Achse, die parallel zu der Halteposition der zu haltenden Welle in ihrer Aufnahme ist, sind vorteilhaft.
Es ist besonders vorteilhaft, eine Vorrichtung zur Definition einer zweiten Drehachse, mit welcher sich nach Bedarf eine zweite Drehachse für den Hebel definieren lässt, vorzusehen. Diese Vorrichtung umfasst also Bauteile, die notwendig sind, um dem Hebel eine zweite Drehachse quasi zuzuschalten. Dies kann geschehen, indem ein Körper, der über einen runde beziehungsweise kurvenförmige Oberfläche verfügt, mit dieser Oberfläche gegen den Hebel angestellt wird.
Alternativ oder ergänzend kann eine Bohrung oder Ausnehmung in dem Hebel vorgesehen sein, in die ein Körper greift, der dann die zweite Achse definiert.According to the invention, this object is achieved by the features of
A stationary positioning and / or a first axis, which is parallel to the holding position of the shaft to be held in its receptacle, are advantageous.
It is particularly advantageous to provide a device for defining a second axis of rotation, with which a second axis of rotation for the lever can be defined as required. Thus, this device comprises components that are necessary to quasi connect the lever to a second axis of rotation. This can be done by a body that has a round or curved surface, is made with this surface against the lever.
Alternatively or additionally, a bore or recess may be provided in the lever, in which a body engages, which then defines the second axis.
Insbesondere bei der zweiten Achse kann es vorkommen, dass keine vom Betrag her nennenswerten Drehbewegungen mehr um die zweite Achse stattfinden, sondern dass diese lediglich zur Herbeiführung von Hebelverhältnissen dient, mit denen adäquate Klemmkräfte aufgebracht werden können.In particular, in the case of the second axis, it may happen that no rotational movements that are noteworthy of the amount take place more about the second axis, but that this only serves to bring about lever ratios with which adequate clamping forces can be applied.
Es können Anschläge, die ihrerseits bewegbar sind, vorgesehen sein. Wenn diese in dem Wirkbereich des Hebels fixierbar sind, können sie die mit demThere may be stops, which in turn are movable, may be provided. If these are fixable in the effective range of the lever, they can be fixed with the
Hebel ausführbaren Schwenkbewegungen beeinflussen. Vorteilhaft ist es, wenn der Hebel gegen einen Spannbacken drückt, der seinerseits die Welle festlegt.Lever affect executable pivoting movements. It is advantageous if the lever presses against a clamping jaw, which in turn determines the shaft.
Bei der Ausführung der erfindungsgemäßen Verfahren ist es vorteilhaft, wenn der Hebel, der um eine erste Achse drehbar gelagert ist, relativ zur Welle bewegt wird. In der Regel wird er beim Festlegen der Welle auf diese zu bewegt und von ihr wegbewegt werden, wenn die Welle wieder freigegeben wird. Vor der Ausführung der Drehbewegung um den Hebel kann der Hebel eine Linearbewegung relativ zu der Welle ausführen.In carrying out the method according to the invention, it is advantageous if the lever, which is rotatably mounted about a first axis, is moved relative to the shaft. As a rule, when the shaft is locked, it will be moved towards and moved away from it when the shaft is released. Before performing the rotational movement about the lever, the lever can perform a linear movement relative to the shaft.
Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor.
Die einzelnen Figuren zeigen:
- Fig. 1
- Eine Skizze einer erfindungsgemäßen Vorrichtung in einer ersten Arbeitsstellung
- Fig. 2
- Eine Skizze der erfindungsgemäßen Vorrichtung aus
in einer zweiten ArbeitsstellungFigur 1 - Fig. 3
- Eine Skizze der erfindungsgemäßen Vorrichtung aus
in einer dritten ArbeitsstellungFigur 1 - Fig. 4
- Eine Skizze der erfindungsgemäßen Vorrichtung aus
in einer vierten ArbeitsstellungFigur 1 - Fig. 5
- Eine Skizze der erfindungsgemäßen Vorrichtung aus
in der bereits inFigur 1 gezeigten vierten Arbeitsstellung, wobei weitere Pfeile eingezeichnet sindFigur 4
The individual figures show:
- Fig. 1
- A sketch of a device according to the invention in a first working position
- Fig. 2
- A sketch of the device according to the invention
FIG. 1 in a second job - Fig. 3
- A sketch of the device according to the invention
FIG. 1 in a third job - Fig. 4
- A sketch of the device according to the invention
FIG. 1 in a fourth job - Fig. 5
- A sketch of the device according to the invention
FIG. 1 in the already inFIG. 4 shown fourth working position, with more arrows are shown
In
In dieser Situation wird die Spannscheibe 6 um die Achse 12 - wie durch den Pfeil 18 dargestellt - in eine Arbeitsposition geschwenkt. Hier definiert sie eine zweite Drehachse 10, die hier durch den Kreis 10 dargestellt ist und die 10 sich allerdings durch die Abrollbewegung des Hebels 5 an der Kurvenscheibe 6 entlang der Berührungsfläche zwischen den beiden Körpern 5, 6 bewegen würde. Im vorliegenden Ausführungsbeispiel bilden also der Hebel 5, die Spannscheibe 6 und deren Anlenkung 12 die Vorrichtung zur Definition einer Drehachse 11. Die Anlenkung 12 ist in der Regel fest am Maschinengestell der Wickelvorrichtung befestigt und hält großen Kräften stand.
Jedoch ist bei dem vorliegenden Ausführungsbeispiel keine Bewegung um einen größeren Betrag beabsichtigt, sondern die Einführung der zweiten Drehachse 10 führt zur signifikanten Änderung der Hebelverhältnisse gegenüber der Situation in
In this situation, the
However, in the present embodiment, no movement is intended by a larger amount, but the introduction of the
Zum Freilegen der Welle 8 laufen die Vorgänge in umgekehrter Reihenfolge ab. Aus darstellerischen Gründen wurde der Hebel 5, der vor dem Schlitten 2 liegt, durchsichtig - also ohne Flächenfarbe - dargestellt, während Bauteile wie der Schlitten mit Flächenfarbe dargestellt wurden.To expose the
Zusammenfassend lässt sich also Folgendes zu der beschriebenen Ausführungsform der Spannvorrichtung 19 sagen:In summary, therefore, the following can be said about the described embodiment of the tensioning device 19:
Bei der gezeigten Spannvorrichtung 19 erreicht man mit einem relativ kleinen pneumatischen Antrieb (Zylinder 7) große Verfahrwege mit großen Spannkräften.In the
Hierbei macht sich diese Spannvorrichtung 19 folgende Umstände zu nutze:
- 1. Zunächst werden große Verfahrwege zum Schließen bzw. Öffnen der Spannvorrichtung über das einfache Verfahren des Pneumatikzylinders erreicht (
).Figuren 1 bis 3 - 2. Dann werden hohe Spannkräfte über das "Hinzuführen oder Hinzufügen" eines zusätzlichen Drehpunktes 10 und das daraus resultierende Hebelverhältnis erreicht.
- 1. First of all, large travel paths for closing or opening the tensioning device are achieved via the simple method of the pneumatic cylinder (
FIGS. 1 to 3 ). - 2. Then high clamping forces on the "addition or addition" of an
additional pivot point 10 and the resulting lever ratio can be achieved.
Zu den Vorteilen der Vorrichtung 19 gehören damit:
- hohe Spannkräfte sind zu erreichen;
- große Verfahrwege sind zu erreichen;
- kleine pneumatische Antriebe 7 sind einsetzbar (z. B. kleine Stellwege);
- es herrscht eine mechanische Sicherung gegen Öffnen der Spannvorrichtung 19 bei Energieabfall durch
den zusätzlichen Drehpunkt 10; - die
Vorrichtung 19 vergleichsweise kostengünstig darstellbar.
- high clamping forces can be achieved;
- large travel distances can be reached;
- small pneumatic drives 7 can be used (eg small travel ranges);
- There is a mechanical safeguard against opening of the
clamping device 19 in the case of energy waste by theadditional pivot point 10; - the
device 19 comparatively inexpensive displayed.
Weitere Vorteile sind zu erreichen, wenn die Steigung der Kurvenscheibe an ihrer Umfangsfläche 23 variiert wird. Wenn diese Steigung z. B. unmittelbar in der Umgebung des Punktes, an dem die Welle 8 festgelegt wird (oft dort, wo der Abstand der Umfangsfläche 23 von dem Drehpunkt 12 der Kurvenscheibe 6 am Größten ist) klein ist (vorteilhafterweise gegenüber der restlichen Umfangsfläche am Kleinsten), kann auch mit der Kurvenscheibe eine große Schließkraft erreicht werden.
Claims (13)
- Apparatus (19) for holding a winding shaft (8),- by way of which apparatus (19) the shaft (8) can be fixed in a receptacle (3) by at least one body (3) being set against it,- and having a lever (5) which is mounted such that it can be rotated about a first axis (9),characterized in that
the first axis (9) is positioned displaceably with respect to the receptacle (3). - Apparatus according to one of the preceding claims,
characterized in that
the first axis (9) runs parallel to the holding position of the winding shaft (8). - Apparatus according to one of the preceding claims,
characterized by
an apparatus (11) for defining a second rotational axis (10), by way of which apparatus (11) a second rotational axis (10) can be defined for the lever (5) if required. - Apparatus according to the preceding claim,
characterized in that
the apparatus (11) for defining a second rotational axis (12) comprises a cam disc (6). - Apparatus according to the preceding claim,
characterized in that
the cam disc (6) for its part can be pivoted about an axis (12). - Apparatus according to Claim 4,
characterized in that
an apparatus (11) for defining a second rotational axis (10) comprises a bore in the lever (5). - Apparatus according to one of the preceding claims,
characterized by
at least one stop (4, 4'), against which the lever (5) acts during its working movement. - Apparatus according to one of the preceding claims,
characterized by
at least one clamping jaw (3) which can be loaded with a force by way of the lever (5), and by way of which clamping jaw (3) the winding shaft (8) can be fixed. - Apparatus according to one of the preceding claims,
characterized by
at least one cylinder (7), preferably a pneumatic cylinder. - Apparatus according to one of the preceding claims,
characterized by
a transport apparatus (1, 2), by way of which the first axis (9) can be moved relative to the shaft (8). - Method for holding a winding shaft (8),- in which method the winding shaft (8) is fixed in a receptacle (3),- by at least one body (3) being set in the direction of the winding shaft (8),- a rotational movement of a lever (5) being performed about a first axis (9),
characterized by- the definition of a second axis (10),- and a rotational movement of the lever (5) about the second axis (10). - Method according to the preceding claim,
characterized in that,
before the rotational movement of the lever (5) about the first axis (9), a movement of the first axis (9) takes place in the direction of the winding shaft (8). - Method according to the preceding claim,
characterized in that,
during the movement of the first axis (9) in the direction of the winding shaft (8), at least one stop (4, 4') and at least one clamping jaw (3) are also moved.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009052411 | 2009-11-10 | ||
PCT/EP2010/067238 WO2011058073A1 (en) | 2009-11-10 | 2010-11-10 | Clamping device for a shaft and method for clamping same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2499075A1 EP2499075A1 (en) | 2012-09-19 |
EP2499075B1 true EP2499075B1 (en) | 2016-01-27 |
Family
ID=43446433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10776107.4A Active EP2499075B1 (en) | 2009-11-10 | 2010-11-10 | Clamping device for a shaft and method for clamping same |
Country Status (3)
Country | Link |
---|---|
US (1) | US9272871B2 (en) |
EP (1) | EP2499075B1 (en) |
WO (1) | WO2011058073A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107777401A (en) * | 2017-11-17 | 2018-03-09 | 深圳市佳得设备科技有限公司 | A kind of Scroll auto lock detent mechanism |
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USD532266S1 (en) * | 2005-09-20 | 2006-11-21 | Emerson Electric Co. | Extra wide jaw arc joint pliers |
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DE102007000929A1 (en) * | 2007-09-03 | 2009-03-05 | Koenig & Bauer Aktiengesellschaft | Device for receiving a wound coil having a wound material web |
US8459625B1 (en) * | 2009-03-31 | 2013-06-11 | Honda Motor Co., Ltd. | Device for securing vehicle body to conveyor carrier |
AT508289B1 (en) * | 2009-05-22 | 2011-02-15 | Andritz Ag Maschf | DEVICE FOR CONTINUOUSLY WRAPPING A FIBROUS WEB |
US8534168B2 (en) * | 2011-02-24 | 2013-09-17 | Joel S. Marks | Compact adjustable locking pliers |
-
2010
- 2010-11-10 EP EP10776107.4A patent/EP2499075B1/en active Active
- 2010-11-10 WO PCT/EP2010/067238 patent/WO2011058073A1/en active Application Filing
- 2010-11-10 US US13/503,041 patent/US9272871B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2499075A1 (en) | 2012-09-19 |
WO2011058073A1 (en) | 2011-05-19 |
US9272871B2 (en) | 2016-03-01 |
US20120200023A1 (en) | 2012-08-09 |
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