EP3946950A1 - Einrichtung und verfahren zum wechseln von sleeves auf dornen oder adaptersleeves - Google Patents
Einrichtung und verfahren zum wechseln von sleeves auf dornen oder adaptersleevesInfo
- Publication number
- EP3946950A1 EP3946950A1 EP20714592.1A EP20714592A EP3946950A1 EP 3946950 A1 EP3946950 A1 EP 3946950A1 EP 20714592 A EP20714592 A EP 20714592A EP 3946950 A1 EP3946950 A1 EP 3946950A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- mandrel
- cylinder
- sleeves
- adapter
- 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
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
- 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 device and a method for changing sleeves to cylinder mandrels or adapter sleeves.
- a so-called printing sleeve also referred to as a sleeve in the context of the application
- This process is usually carried out for each color to be printed.
- the sleeve and / or the adapter sleeve is removed from a cylinder mandrel that remains in the printing machine via an exposed end of the printing roller located in a printing machine, or the cylinder mandrel is lifted completely out of the printing machine and outside the printing machine sleeve and / or adapter sleeve are removed.
- the present invention relates to both variants.
- the object of the present invention is therefore to propose a device and a method which are less complex.
- a device for changing sleeves to cylinder mandrels or adapter sleeves which can preferably be inserted into and removed from a printing machine.
- a device for changing sleeves to cylinder mandrels or adapter sleeves which can preferably be inserted into and removed from a printing machine.
- the holding device is arranged at least partially within the security area, and wherein the holding device is arranged or positionable in such a way that the sleeve can be gripped outside the security area.
- a security device is initially provided which defines a security area. This safety area must not be entered by people, at least while sleeves, adapter sleeves and / or cylinder mandrels are being handled.
- a holding device is provided according to the invention with which the adapter sleeve or the cylinder mandrel, on which in particular the sleeve is arranged, can be temporarily held. The holding device is now arranged or positionable in such a way that the sleeve can be gripped outside the safety area. The invention thus enables an operator to manually pull the sleeve off the adapter sleeve or the cylinder mandrel and slide on another sleeve without having to enter the safety area.
- the adapter sleeve or the cylinder mandrel is “passed out” of the safety area in order to be able to carry out the aforementioned work. Since there is no need to adapt an automatic system to different sleeve diameters, this system is less complex, which among other things leads to a lower sales price.
- Another essential advantage is that a machine operator can take hold of a sleeve at a suitable point, in particular at a point on the outer surface where there is no print motif, in order to be able to move it relative to the adapter sleeve and / or cylinder mandrel. Since an operator can also control the size of his force very precisely as required, the risk of damage to the sleeves, which are sometimes very thin-walled and therefore very sensitive, is minimized.
- a transfer device is arranged within the safety area, with which the adapter sleeve and / or the cylinder mandrel can be transported to the holding device.
- the adapter sleeve and / or the cylinder mandrel can thus be moved within the safety device without manual intervention by the machine operator being necessary.
- such a transfer device can be used to transport the adapter sleeve and / or the cylinder mandrel to the holding device, so that the adapter sleeve and / or the cylinder mandrel can be taken over by the holding device.
- the transfer device can take over the adapter sleeve and / or the cylinder mandrel, which now carries the new sleeve, and - again without manual intervention - transport it to the destination position.
- the particular advantage of this development lies in the fact that the adapter sleeve and / or the cylinder mandrel can be transported through the transfer device and the sleeve exchange by the machine operator can take place at the same time, so that a print job can be changed efficiently.
- the transfer device can be, for example, a robot standing on the floor or hanging on rails, the word “robot” being understood to mean a transfer device which comprises several articulated and swivel joints to move the adapter sleeve and / or the cylinder mandrel in any spatial direction to be able to bring and to be able to rotate around its longitudinal axis.
- Support arms are provided between the swivel and articulated joints, which are dimensioned such that the adapter sleeve and / or the cylinder mandrel can be brought into the holding device as well as into the optionally provided printing press.
- a transfer system which can advantageously be combined in connection with the present invention is DE 10 2004 037 253 B1. The parts of the description of the aforementioned document relating to the transfer system are hereby incorporated by reference into this application.
- the holding device comprises at least one mandrel and / or a receptacle for the cylindrical mandrel.
- the adapter sleeve can thus be pushed onto the mandrel of the holding device, similar to what can be done in a printing press.
- the adapter sleeve with the mandrel can be connected to the mandrel in a rotationally and / or displaceably fixed manner, so that if the operator wishes to move the sleeve, the adapter sleeve remains on the mandrel.
- the cylinder mandrel can be connected to a receptacle, which can also be configured similarly to a corresponding receptacle in a printing press.
- the receptacle provides two spaced-apart bearing points, so that the torque caused by the cylinder mandrel can be counteracted if one end of the cylinder mandrel is freely accessible in order to be able to pull off the sleeve.
- the holding device comprises at least two mandrels and / or receptacles for cylinder mandrels.
- a mandrel and / or receptacle can be equipped with an adapter sleeve or with a cylinder mandrel within the safety area, while the operator can replace a sleeve with a second one Adapter sleeve or a second cylinder mandrel. This saves set-up time.
- the mandrel and / or the receptacle for the cylinder mandrel between a removal position in which the operator can change the sleeve and a transfer position in which the adapter sleeve and / or the cylinder mandrel inside of the security area is manageable be movable back and forth.
- the transfer device mentioned above can advantageously be combined with the holding device.
- the mandrel and / or the receptacle for the cylindrical mandrel can be arranged movably within the holding device via a movement element.
- Such movement elements can be slide / rail combinations.
- This combination enables a linear movement of the adapter sleeve or the cylinder mandrel.
- Further movement elements for a linear movement are conceivable, such as chain or cable pulls.
- Rotary or swivel bearings with which rotating, tilting, tilting or pivoting is possible are also conceivable as movement elements. It goes without saying that a combination of a linear movement with a rotary or pivoting movement and, as a result, a combination of the corresponding movement elements is possible.
- a pivot bearing as a movement element is particularly advantageous, since this is of simple mechanical construction.
- This pivot bearing can be pivotable about a vertical axis, with “vertical” meaning the direction of gravity.
- the mandrel and / or the receptacle for the cylindrical mandrel can thus be pivoted in such a way that the free end of the adapter sleeve and / or the cylindrical mandrel can be pivoted out of the safety area and can then be reached by the operating personnel.
- the mandrel and / or the receptacle for the cylindrical mandrel can be driven by a motor, in particular an electric motor, via the pivot bearing.
- mandrels or receptacles are provided for cylinder mandrels, these can be mounted on swivel bearings arranged one above the other, which in turn can be arranged on the same axis, be attached.
- the pivot bearings can be connected to one another via a gear stage for the transmission of drive forces, so that only one drive device has to be provided.
- This drive device can in turn be a motor, in particular an electric motor.
- the holding device comprises a compressed air and / or hydraulic supply
- the adapter sleeve or the cylinder mandrel with Compressed air and / or can be acted upon with a hydraulic fluid.
- Such a supply can also make it possible to connect the adapter sleeve and / or the cylinder mandrel immovably to the mandrel or the receptacle for the cylinder mandrel and to detach it therefrom again.
- Such a supply can be constructed analogously to a corresponding supply in a printing machine, so that the cylinder mandrels or adapter sleeves can be acted upon with compressed air or a hydraulic fluid in the same way as in the printing machine.
- the aforementioned supply can be provided in the following ways: A mandrel, an adapter sleeve or a cylinder mandrel can be provided on its outer circumference with a number of small openings from which the compressed air supply Compressed air made available can flow out.
- the compressed air is able to increase the inner diameter of the sleeve or the adapter sleeve somewhat, so that the sleeve or the adapter sleeve is relatively easier to use to which the components on which it is to be pushed can be moved.
- the inside diameter is reduced again so that the sleeve or the adapter sleeve is in frictional engagement with the component onto which it was pushed.
- the inner surface of the sleeve or of the adapter sleeve comprises a compressible material.
- the mandrel with a hydraulic fluid in particular a Hydraulic fluid can be acted upon.
- the mandrel can comprise regions or sections of the outer circumference which are variable in diameter, such as so-called expansion tensioning elements. If a pressurized hydraulic fluid is applied to such an area or section from the inside, the outer diameter increases.
- a sleeve or an adapter sleeve can now comprise complementary sections or areas on its inner circumference, the diameters of which are invariable.
- an adapter sleeve or a cylinder mandrel can also include such an area or section, but here a hydraulic fluid can be provided which is exclusively located within the mandrel, the cylinder mandrel or the adapter and can be pressurized from the outside via a pressure element such as a screw is.
- a pressure element can be operated using a suitable tool such as a pneumatic screwdriver.
- the safety device comprises at least partially structurally arranged separating elements.
- separating elements represent a physical barrier for the operator and cannot easily be walked through.
- Such a barrier is comparatively easy to set up and provides safe personal protection for the operator. For example, he cannot get into the work area of a transfer device.
- the holding device can also represent such a separating element and consequently be part of the securing device. The operator can thus reach operating elements of the holding device from an outside area.
- an optically operating safety device such as a light or sensor grille can also be provided which, for example, triggers an emergency stop if a person penetrates the safety area and is recognized. At least parts of the moving machine elements within the safety area can thus be stopped immediately.
- the safety device comprises an opening through which the sleeve can be introduced into the safety area or removed from it. This simplifies the sleeve change, since the holding device does not have to bring the sleeve arranged on the adapter sleeve and / or on the cylinder mandrel completely out of the safety area. A sleeve change can thus be carried out more quickly.
- a closing element can be provided with which the opening can be closed.
- a closing element can further reduce the risk of accidents for the operator if the mandrel and / or the receiving device for the cylindrical mandrel move within the safety area.
- a closing element can be a door, for example a sliding door.
- sensors can be provided, with which the closed state of the closing element can be determined, so that the movement of the cylinder mandrel and / or the adapter is only possible when the closing element has essentially completely closed the opening.
- a preferred embodiment of the invention also includes an intermediate storage device arranged within the security area.
- this intermediate storage facility adapter sleeves and / or cylinder mandrels can be stored, which can each be equipped with sleeves. This creates the possibility, for example, of equipping adapter sleeves and / or cylinder mandrels with sleeves and preparing and storing them for a subsequent print job until the current print job has ended.
- a transfer device can now gradually exchange the adapter sleeves and / or the cylinder mandrels, which each carry a print sleeve, for one of the subsequent print job. When this exchange is complete, the next print job can be started.
- sleeves does not only mean a sleeve carrying a print motif, but also a sleeve of any other roller, for example an anilox roller
- a system for printing at least one material web which is achieved by a printing machine from which sleeves on cylinder mandrels or adapter sleeves can be supplied or removed, this system comprising a device according to the invention for changing sleeves on cylinder mandrels and / or adapter sleeves .
- the above-mentioned object is also achieved by a method for changing sleeves to cylinder mandrels or adapter sleeves which are in a
- a safety area is defined with a safety device
- a cylinder mandrel or an adapter sleeve is temporarily held with a holding device
- the holding device is arranged at least partially within the safety area, and wherein the holding device is arranged or can be positioned in such a way that the sleeve is gripped outside the safety area.
- Fig. 2 is a view of a device according to the invention.
- Folding device carries a sleeve and / or an adapter sleeve.
- FIG. 3 shows a view of a device according to the invention, the sleeve being ready to be removed by the machine operator.
- the device comprises a safety device 101, which in the exemplary embodiment shown is embodied by a plurality of walls 102.
- "Wall" is to be understood as a synonym for permanently installed elements.
- a wall can be designed as a fence with a wire mesh, for example.
- a wall can also contain transparent elements.
- At least one wall is preferably provided through which a person can look.
- At least one wall 102 is provided with an opening which can be closed by means of a closing device 103.
- the locking device is shown here as a sliding door which is slidably mounted on rails 104 so that it can be moved parallel to wall 102.
- the safety device 101 circumscribes a safety area 105, which consequently cannot be entered by an operator who is in the outer area 106 which surrounds the safety device 101.
- a transfer device 107 can be provided, which can be designed as a robot, for example.
- Such a robot can have several support arms 108, two support arms 108 each being connected, preferably via swivel joints 109, which allow rotation about one or even several axes so that a receiving element 110 can be rotated, shifted and / or tilted in almost any direction .
- the robot is thus able to pick up an adapter sleeve and / or a cylinder mandrel from different positions.
- a slide 11 can be provided which is displaceable in the axial direction of the receiving element 1 10 and can be coupled to the adapter sleeve and / or the cylindrical mandrel.
- the device according to the invention is shown in FIG. 1 together with a printing press and is described below as a possible combination.
- the printing press 200 is a component of the security device 101 to the extent that the printing press also prevents access to the security area.
- the printing machine 200 is shown as a central cylinder machine, which means that a central impression cylinder 201 is provided around which several printing units are arranged. Two printing units are symbolized by printing cylinders 202.
- a printing cylinder comprises a cylinder mandrel 203 that carries a sleeve 204 and optionally an adapter sleeve 205.
- a printing press 200 can also be another rotary printing press, such as a serial printing press.
- a central cylinder machine is preferably a central cylinder flexographic printing machine and / or a central cylinder packaging printing machine.
- the adapter sleeve which carries the sleeve or the cylinder mandrel, which carries the sleeve or the adapter sleeve together with the sleeve, can now be received with the receiving element 110.
- the device comprises a folding device 120 which is equipped, for example, with a mandrel 121 shown, in order to be able to receive an adapter sleeve 205, which is shown in FIG.
- the transport can have been carried out by the transfer device 107 explained in connection with FIG.
- FIG. 3 now shows the situation in which the mandrel 121 has been pivoted so that it points in the direction of the opening 122 which was previously closed by the closing device 103.
- the machine operator 123 is now able to remove the sleeve 204 from the outside area from the adapter sleeve 205 and replace it with another sleeve.
Landscapes
- Rotary Presses (AREA)
- Processing Of Terminals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019204184 | 2019-03-26 | ||
| DE102019204293 | 2019-03-27 | ||
| PCT/EP2020/058482 WO2020193680A1 (de) | 2019-03-26 | 2020-03-26 | Einrichtung und verfahren zum wechseln von sleeves auf dornen oder adaptersleeves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3946950A1 true EP3946950A1 (de) | 2022-02-09 |
| EP3946950B1 EP3946950B1 (de) | 2023-07-12 |
Family
ID=70008555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20714592.1A Active EP3946950B1 (de) | 2019-03-26 | 2020-03-26 | Einrichtung und verfahren zum wechseln von sleeves auf zylinderdornen oder auf adaptersleeves |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3946950B1 (de) |
| ES (1) | ES2953197T3 (de) |
| WO (1) | WO2020193680A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12122145B2 (en) * | 2020-10-19 | 2024-10-22 | Bobst Bielefeld Gmbh | Method for automatically exchanging a sleeve of a printing tool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10261999B4 (de) * | 2002-05-25 | 2015-01-29 | Windmöller & Hölscher Kg | Druckmaschine mit Trittblech zum Erreichen der oberen Farbwerke |
| DE102004037253B4 (de) | 2004-07-31 | 2013-09-05 | Windmöller & Hölscher Kg | Sleevewechselsystem |
| EP1745929B1 (de) * | 2005-07-21 | 2010-12-29 | Fischer & Krecke GmbH | Druckmaschine |
| EP3199345B1 (de) * | 2016-01-29 | 2018-11-14 | Comexi Group Industries, S.A.U | Druckeinrichtung und verfahren zur anordnung von hülsen in besagter druckeinrichtung |
-
2020
- 2020-03-26 ES ES20714592T patent/ES2953197T3/es active Active
- 2020-03-26 EP EP20714592.1A patent/EP3946950B1/de active Active
- 2020-03-26 WO PCT/EP2020/058482 patent/WO2020193680A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020193680A1 (de) | 2020-10-01 |
| EP3946950B1 (de) | 2023-07-12 |
| ES2953197T3 (es) | 2023-11-08 |
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