WO2015135532A1 - Druckwalze und verfahren zum montieren einer druckwalze - Google Patents
Druckwalze und verfahren zum montieren einer druckwalze Download PDFInfo
- Publication number
- WO2015135532A1 WO2015135532A1 PCT/DE2015/100094 DE2015100094W WO2015135532A1 WO 2015135532 A1 WO2015135532 A1 WO 2015135532A1 DE 2015100094 W DE2015100094 W DE 2015100094W WO 2015135532 A1 WO2015135532 A1 WO 2015135532A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clamping
- proximal
- pressure
- base body
- distal
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
- B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/26—Construction of inking rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2200/00—Printing processes
- B41P2200/10—Relief printing
- B41P2200/12—Flexographic printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
- B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
Definitions
- the invention relates to a pressure roller and a method for mounting a pressure roller.
- Pressure rollers in particular pressure rollers for flexographic printing, usually have a base body or roller base body, which acts as a carrier and end bearing elements or sections has, which are arranged in the use of the pressure roller in associated bearing points.
- a pressure sleeve is releasably fixed by means of different clamping technologies. It can be provided that the pressure sleeve is seated on a likewise arranged on the base body adapter.
- Various clamping devices have been proposed to attach the pressure sleeve to the body replaceable.
- the pressure sleeve has an inner diameter which is slightly smaller than the outer diameter of the Grundköpers.
- the inner diameter of a basic sleeve which is part of the adapter or pressure sleeve, widens, in such a way that the pressure sleeve can be pushed onto the supporting body by hand.
- the inner diameter of the pressure sleeve is reduced again so that force and frictional engagement is created between the main body and the pressure sleeve.
- the adapter or the pressure sleeve has a flexible inner layer, which is thus yielding for the pneumatic pressure application, and as a result undesirable softness arises in the system of the pressure roller.
- the document EP 2 090 432 A1 discloses a clamping by means of pressure pieces, which are actuated via an internal pull rod in the hollow basic body.
- the document EP 2 639 064 A1 discloses a flexographic printing unit with a pressure roller carrying at least one printing form, a counterpressure roller and at least one application roller which transfers the printing ink directly to the printing form.
- the application roller is composed of a roller core (main body) and a shell surrounding the roll shell, the outer shell is provided with a grid and having at least one clamping surface in its inner shell, against the clamping means from the inside are clamped, the clamping means part of the roll core are.
- a pressure sleeve by means of a mechanical tensioning device releasably and changeably mounted on the body with end-side bearing elements.
- the tensioning device has a clamping bush arranged screwably on the base body and, in relation to the clamping bush, a proximal and a distal tensioning element. Between the proximal and the distal clamping element, a bush is arranged, such that a pressure force provided by means of the clamping bush is transmitted from the clamping bush to the proximal tensioning element and from here via the bushing to the distal tensioning element.
- a pressure force provided by means of the clamping bush is transmitted from the clamping bush to the proximal tensioning element and from here via the bushing to the distal tensioning element.
- the rollers In order to be able to exchange cylindrical rollers, preferably pressure cylinders, mounted on a free shaft end simply and quickly with good centering and more precisely axial alignment, the rollers have cover-like end walls with conical bores, of which a bore is supported on a shaft-fixed first counter-cone. On the shaft a displaceable against spring force second counter-cone is mounted, which engages in the other bore and biases the roller against the first counter-cone.
- Document DE 20 27 200 B2 discloses a device for clamping a printing cylinder.
- a centering cone pushed onto the cylinder shaft is pressed against the corresponding conical inner surface of the impression cylinder under the influence of a compression spring acting in the axial direction.
- a compression spring acting in the axial direction Within a background rotation of the centering cone, both inside the compression spring against the Zentrierko- and externally supported the pressure cylinder jacket flange bush is guided and secured by a dowel against axial detachment, the cylinder shaft, the centering cone and the flange each have a longitudinal groove in the one common feather attacks.
- the object of the invention is to provide a pressure roller and a method for mounting a pressure roller, in which the problems of the prior art are overcome.
- error-free mounting and replacement of the pressure sleeve on the supporting body of the pressure roller should be possible.
- a pressure roller in particular a flexographic pressure roller, is provided with a base body and a pressure sleeve.
- the main body has end bearing sections or elements, which are arranged in the use of the pressure roller in associated bearing points.
- the pressure sleeve on the body releasably and interchangeably tensioned.
- the pressure sleeve may be a sleeve or a combination of sleeve and adapter, on which the sleeve is arranged.
- the (outer) sleeve is arranged on the adapter in the pressure sleeve, and the pressure sleeve forming the combination of sleeve and adapter is stretched on the base body.
- the clamping device has a clamping bush displaceable on the main body in the axial direction and, with respect to the clamping bush, a proximal and a distal tensioning element.
- the clamping elements may be formed radially circumferentially continuous or interrupted.
- the clamping bush can be arranged screwably on the base body, so that the axial displacement is made possible by means of a screwing movement.
- the axial displacement of the clamping sleeve generates a compressive force which is transmitted to the proximal and the distal clamping element via a pressure force transmission chain, which can also be referred to as a pressure force transmission mechanism, so that there is respectively provided a radially acting clamping force in order to tension the pressure sleeve on the base body ,
- the pressure force generated by the clamping sleeve is predominantly or completely transferred only to the distal clamping element when fixing the pressure sleeve to the base body in an initial clamping phase, so unfolds on this the radial clamping force, while the proximal clamping element compared to the distal clamping element is applied to a lesser extent or not at all with the compressive force generated by the clamping bush.
- this ensures that only the distal clamping element unfolds the radial clamping force in the initial clamping phase, whereas the proximal clamping element is still free of such a radial clamping force.
- a radially acting clamping force is developed.
- a radial clamping force can be developed, which is less than the radial clamping force on the distal clamping element.
- the tensioning bush may be provided that there is no mechanical contact between the clamping bush and the proximal tensioning element in the initial tensioning phase, so that the tensioning bushing is free of contact with the proximal tensioning element.
- the pressure force transmission chain is not closed in this case in terms of the connection between the clamping bush and the proximal clamping element. In such an embodiment, it comes only after the initial clamping phase to the frictional connection between the clamping bush and the proximal clamping element, in particular by means of contact formation between them.
- a compressible component which is set up to be compressed in the initial tensioning phase, which at least reduces the pressure transmission to the proximal tensioning element, can be arranged between the tensioning bushing and the proximal tensioning element, and only then a force transmission in its entirety to the proximal one To cause clamping element.
- a spring element may be provided which is initially compressed to effect a greater pressure transfer only after the initial tensioning phase.
- a method for mounting a pressure roller is provided, in particular a flexographic printing roll. In the method, a base body is provided which has end bearing portions. A pressure sleeve is pushed onto the base body.
- the pressure sleeve is clamped to the main body (fixed tension) by means of a clamping device which has a Grundköper arranged and displaceable in the axial direction of the clamping bush and, with respect to the clamping bush, a proximal and a distal clamping element.
- a compressive force is generated by means of axial displacement of the clamping bush and introduced via a pressure force transmission chain which is formed between the clamping bush and the proximal and the distal clamping element on the proximal and the distal clamping element.
- the proximal and the distal clamping element thus releasably tension the pressure sleeve on the base body by means of a respective radial clamping force.
- the method provides that the compressive force transmission chain during clamping of the pressure sleeve on the base body in an initial clamping phase of the clamping bush generated compressive force predominantly or completely transmits to the distal clamping element, so that there the radial clamping force is deployed, which leads to the interchangeable clamping of the pressure sleeve on the base body.
- the proximal tensioning element is subjected to less or no pressure than that produced by the tensioning bushing relative to the distal tensioning element.
- the pressure force transmission chain is formed as a mechanical transmission chain.
- the mechanical transmission chain can be formed in one piece or in several parts.
- the mechanical transmission chain can be formed on the pressure sleeve and / or on the base body. In adjacent elements or parts of the mechanical transmission chain, opposing and associated surfaces may be arranged one upon the other.
- a pressure force transmission chain can be provided, which is formed at least partially with a hydraulic transmission chain, for example with a hydraulic cylinder, in which a hydraulic fluid is acted upon by the pressure force generated by the clamping bush in order to move a hydraulic piston displaceable in the hydraulic cylinder, which thus contributes to the transmission of force in the compression force transmission chain.
- the proximal and / or distal clamping element can be designed with a spreading element.
- the radial clamping force can be the result of a deformation effect when pressure is applied to the expansion element, such that the expansion element spreads and so unfold the radial force effect.
- Such spreading elements are known as such in various embodiments.
- the compressive force transmission chain can have a securing or force introduction element which is set up to reduce or completely suppress the loading of the proximal tensioning element with the pressure force generated by the clamping bushing in the initial tensioning phase, in that the securing element provides a counterforce to the pressure force generated.
- the securing or force introduction element opposes, at least in the initial tensioning phase, the compressive force generated by the clamping bushing, which ensures that the proximal tensioning element is subjected to altogether or too much compressive force in the initial tensioning phase.
- the drag can prevent, for example, that Clamping bush and proximal tensioning element in the initial clamping phase in contact, and be provided with a spring element.
- the securing element may have a biasing element which partially or fully biases the clamping bushing against transfer of the compressive force generated by the clamping bushing to the proximal tensioning element in the initial tensioning phase.
- the biasing element may be formed with a spring element which biases the clamping bush against the transmission of the generated compressive force to the proximal tensioning element.
- a plate spring can be used, which can be arranged on the base body in this or other embodiments.
- the securing element is set up to be moved during axial displacement of the clamping bush.
- the securing element and the biasing element can be arranged axially displaceable on the base body.
- the securing element can be mounted on the clamping bush, for example in an associated recess on the clamping bush.
- the securing element may be formed in the various embodiments radially circumferentially in closed or interrupted form around the clamping bush.
- the securing element can be arranged on the pressure sleeve, such that the securing element can be separated from the basic body together with the pressure sleeve.
- the securing element may be part of the pressure sleeve, so that a common mounting and replacement of pressure sleeve and securing element is made possible.
- the pressure force transmission chain is formed with the inclusion of the pressure sleeve, such that the pressure force generated by the clamping bush is transferable via the pressure sleeve to the proximal and / or the distal clamping element.
- the pressure sleeve is here a link in the transmission chain for transmitting the compressive force generated by the clamping bushing to the proximal and / or the distal tensioning element.
- the securing element can form the chain link between the clamping bush and the pressure sleeve.
- the contact between securing element and pressure sleeve can be formed in the region of the end face of the pressure sleeve.
- the proximal and / or the distal clamping element can be arranged in an associated recess on the base body.
- the proximal and / or the distal clamping element can be received in a form-fitting manner in the associated recess on the base body.
- Inserted into the respective recess can be provided a pressure element, which then presses as part of the pressure force transmission chain against the respective clamping element to develop the radial clamping force.
- the proximal and the distal clamping element can be arranged in the radial direction at different distances from the central axis of the basic body.
- the clamping bush and the proximal tensioning element are spaced apart from one another during the initial tensioning phase. Thus, there is no contact between the axially displacing clamping bush and the proximal clamping element. The compressive force transmission chain is not closed for this time to the proximal clamping element. There is no power transmission.
- a refinement provides for the method that a mechanical element of the pressure force transmission chain is at least temporarily displaced relative to the proximal tensioning element during the initial tensioning phase and tensioned in a later tensioning phase due to the radial tensioning force then occurring on the proximal tensioning element and thereby fixed relative to the proximal tensioning element.
- the mechanical element can be, for example, a bushing or sleeve which is arranged to be displaceable in the axial direction, for example on the main body or in the basic sleeve. In Relatiwerlage- tion between the mechanical element and the proximal clamping element surfaces of the two elements can slide on each other. Description of exemplary embodiments
- Fig. 2 is a schematic representation of another pressure roller in cross section and Fig. 3 is a schematic representation of a clamping bush with integrated force introduction element for a pressure roller.
- Fig. 1 shows a schematic representation of a pressure roller 1, in particular a pressure roller for flexographic printing.
- the pressure roller 1 has a base body 2, on the end bearing portions 3, 4 are formed.
- On the carrier rod-shaped base body 2 is a pressure sleeve 5 releasably and interchangeably tensioned by means of a clamping device 6.
- the pressure sleeve 5 may be a sleeve or a combination of sleeve and adapter, on which the sleeve is arranged.
- the (outer) sleeve is arranged on the adapter in the pressure sleeve 5, and the pressure sleeve 5 forming combination of sleeve and adapter is stretched on the base body 2.
- the tensioning device 6 has a clamping bush 7, which is arranged in a screwable manner on the base body 2. By means of turning (screws), the clamping bush 7 can be displaced in the axial direction of the main body 2.
- the clamping bush 7 serves to provide a compressive force, which is transmitted to a basic clamping element 8 and a distal tensioning element 9 during clamping of the pressure sleeve 5 on the base body 2.
- FIG. 1 shows a non-tensioned initial state, in which the clamping bush 7 is arranged at a distance from the proximal clamping element 8. If now the clamping bush 7 is moved in the axial direction towards the proximal tensioning element 8 by means of a screwing movement, the pressure force provided by the tensioning bushing 7 is over an end face in an initial tensioning phase via a securing element 10, which in the illustrated embodiment is designed as a plate spring 11 of the printing sleeve 5 transferred to this. The pressure sleeve 5 in turn mechanically couples via a transmission element 12 to the distal tensioning element 9.
- the distal tensioning element 9 is formed with a distal expansion element 9a, which due to the (lateral) pressurization via the transmission element 12 is subject to a deformation effect, which leads to the spreading of the expansion element 9a in the radial direction, so that the expansion element 9a presses against an inner surface 12a of the transmission element 12 and thereby against the pressure sleeve 5.
- the deformation effect of the expansion element 9a takes place since the expansion element 9a is pressed against a collar 13 during the application of pressure and thus the pressure force can not escape. Rather, the radial clamping force for releasably tensioning the pressure sleeve 5 is thus generated on the base support 2 in the region of the distal tensioning element 9.
- the tension bushing 7 moves further in the direction of the proximal tensioning element 8, which is formed with a proximal expansion element 8a, then the tension bushing 7 finally comes into contact with the proximal tensioning element 8 and acts on it with a pressure force, resulting in a spreading of the proximal expansion element 8a leads in the radial direction, so that the pressure sleeve 5 is finally tensioned in the region of the proximal tensioning element 8 on the base support 2.
- Fig. 2 shows a schematic representation of another pressure roller, in which a releasable voltage between the base body 2 and pressure sleeve 5 is provided in a comparable manner.
- the pressure force transmission chain is formed in the embodiment in Fig. 2 with a transmission socket 14, which in turn then presses on the distal clamping element 9, whereby the spreading of the associated expansion element 9a takes place.
- Fig. 2 shows the pressure roller in an initial tensioning phase, in which the clamping sleeve 7 is not in contact with the proximal tensioning element 8.
- FIG. 3 shows a schematic representation of a clamping bush 7 with integrated force introduction element 10, in which the clamping or releasing the pressure sleeve 5 is accelerated because the clamping bush can be mounted or dismounted with force introduction element as an assembly on the base body 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/124,498 US20170080702A1 (en) | 2014-03-11 | 2015-03-10 | Printing roller and method for mounting a printing roller |
| MX2016011709A MX2016011709A (es) | 2014-03-11 | 2015-03-10 | Cilindro de impresora y metodo para montaje de cilindro de impresora. |
| EP15713129.3A EP3116715A1 (de) | 2014-03-11 | 2015-03-10 | Druckwalze und verfahren zum montieren einer druckwalze |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014103251.9A DE102014103251A1 (de) | 2014-03-11 | 2014-03-11 | Druckwalze und Verfahren zum Montieren einer Druckwalze |
| DE102014103251.9 | 2014-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015135532A1 true WO2015135532A1 (de) | 2015-09-17 |
Family
ID=52779440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2015/100094 Ceased WO2015135532A1 (de) | 2014-03-11 | 2015-03-10 | Druckwalze und verfahren zum montieren einer druckwalze |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170080702A1 (de) |
| EP (1) | EP3116715A1 (de) |
| DE (1) | DE102014103251A1 (de) |
| MX (1) | MX2016011709A (de) |
| WO (1) | WO2015135532A1 (de) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2027200B2 (de) | 1970-06-03 | 1979-01-04 | Basf Ag, 6700 Ludwigshafen | Vorrichtung zum Aufspannen eines Druckzylinders |
| EP0527293A1 (de) | 1991-04-19 | 1993-02-17 | Erminio Rossini S.P.A. | Dorn mit zusammenwirkender Hülse, insbesondere für Druckzylinder für Rotationstiefdruckmaschinen |
| DE19722460C1 (de) | 1997-05-28 | 1999-02-04 | Windmoeller & Hoelscher | Lagerung einer zylindrischen Walze |
| EP0962316A1 (de) * | 1998-06-04 | 1999-12-08 | Fischer & Krecke Gmbh & Co. | Spreizvorrichtung zur axialen Fixierung einer Zylinderhülse auf einer Welle einer Druckmaschine |
| EP2090432A1 (de) | 2008-02-12 | 2009-08-19 | Müller Martini Holding AG | Zylinder für ein Druckwerk einer Druckmaschine sowie Verfahren zum Auswechseln einer Druckhülse eines solchen Zylinders |
| EP2639064A1 (de) | 2012-03-12 | 2013-09-18 | SDF Schnitt-Druck-Falz Spezialmaschinen GmbH | Flexodruckwerk |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1106716B (it) * | 1978-12-20 | 1985-11-18 | Dugomrulli Srl | Dispositivo di tenuta in particolare per testate di rulli per trasportatori |
-
2014
- 2014-03-11 DE DE102014103251.9A patent/DE102014103251A1/de not_active Withdrawn
-
2015
- 2015-03-10 MX MX2016011709A patent/MX2016011709A/es unknown
- 2015-03-10 EP EP15713129.3A patent/EP3116715A1/de not_active Withdrawn
- 2015-03-10 US US15/124,498 patent/US20170080702A1/en not_active Abandoned
- 2015-03-10 WO PCT/DE2015/100094 patent/WO2015135532A1/de not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2027200B2 (de) | 1970-06-03 | 1979-01-04 | Basf Ag, 6700 Ludwigshafen | Vorrichtung zum Aufspannen eines Druckzylinders |
| EP0527293A1 (de) | 1991-04-19 | 1993-02-17 | Erminio Rossini S.P.A. | Dorn mit zusammenwirkender Hülse, insbesondere für Druckzylinder für Rotationstiefdruckmaschinen |
| DE19722460C1 (de) | 1997-05-28 | 1999-02-04 | Windmoeller & Hoelscher | Lagerung einer zylindrischen Walze |
| EP0962316A1 (de) * | 1998-06-04 | 1999-12-08 | Fischer & Krecke Gmbh & Co. | Spreizvorrichtung zur axialen Fixierung einer Zylinderhülse auf einer Welle einer Druckmaschine |
| EP2090432A1 (de) | 2008-02-12 | 2009-08-19 | Müller Martini Holding AG | Zylinder für ein Druckwerk einer Druckmaschine sowie Verfahren zum Auswechseln einer Druckhülse eines solchen Zylinders |
| EP2639064A1 (de) | 2012-03-12 | 2013-09-18 | SDF Schnitt-Druck-Falz Spezialmaschinen GmbH | Flexodruckwerk |
Also Published As
| Publication number | Publication date |
|---|---|
| US20170080702A1 (en) | 2017-03-23 |
| DE102014103251A1 (de) | 2015-09-17 |
| EP3116715A1 (de) | 2017-01-18 |
| MX2016011709A (es) | 2017-04-27 |
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