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
  • B41F13/193—Transfer cylinders; Offset cylinders
• • 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
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/44—Arrangements to accommodate interchangeable cylinders of different sizes to enable machine to print on areas of different sizes
• • 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
  • B41F27/14—Devices for attaching printing elements or formes to supports for attaching printing formes to intermediate supports, e.g. adapter members
• • 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
  • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

• the invention relates to a system for changing sleeves according to the preamble of patent claim 1.
• Ink transfer rollers are all rollers of a printing press, which "are involved in the ink transfer between the ink reservoir and the printing substrate.” For flexo printing machines, these are the screen and cliché rollers or printing rollers. In the case of a job change, not complete ink transfer rollers are replaced, but only sleeves, ie the sleeves, which can be pushed onto and removed from the mandrels of ink transfer rollers which remain in the printing presses In printing operation, the free ends are often intercepted with interceptor pads, thus avoiding vibrations of the ink transfer rollers support roller removed so that the sleeves can be removed via this resulting free end of the ink transfer roller.
• sleeves all possible sleeves, which can be used for ink transfer rollers, summarized.
• DE 102 23 414 shows a transport device for printing sleeves with a plurality of support pins.
• This transport device can be coupled to a lifting device. With this lifting sleeves can be brought to the height of the printing unit, which is to be equipped with these sleeves. The operator now only needs to withdraw the sleeves from the carrier pins in a substantially linear movement and push them onto the mandrels of the ink transfer rollers. In the reverse manner, unused sleeves can be removed from the inking units. After uncoupling the transport device, this can be transported to a storage or storage device.
• DE 100 22 558 C2 shows such a storage device in which a plurality of sleeves can be stored. After the operator has removed the sleeves from the transport device, they are attached edgewise on support elements. These carrier elements are retrieved with the sleeves from a robot head and fed to their destinations within the storage device.
• EP 1 195 245 A1 discloses a further storage device in which data is stored on the printing sleeves. In order to find printing sleeves easier, these have transponders that can be read by data exchange devices.
• a disadvantage is that there are many types and devices of many printing companies, which serve the storage, transport and / or the application of sleeves on mandrels of ink transfer rollers. In any case, but the operator must take the sleeves at least once in the hand. In the case described, the operating personnel must even feed the sleeves of the transport device and also remove them, regardless of whether it is a set-up or a disassembling operation on the printing press. During a set-up or disarming process, operators may place the sleeves in incorrect positions in the printing press, in the transport device, or in the storage device. In addition, when changing the sleeves due to the sometimes heavy weight of the sleeves accident hazards for the operator. Careless handling of the sleeves can also damage them.
• the object of the present invention is thus to provide a system for changing sleeves which can be pushed onto mandrels of ink transfer rollers of a printing press, which avoids the disadvantages mentioned.
• the sleeve changing system comprises sleeve transfer means by which the sleeves are transportable between the storage device and / or the transport means and the domes of ink transfer rollers in the at least one printing machine and / or between the storage device and the transport means.
• the printing sleeves can be removed directly from the storage device and, after being brought to the printing press, can also be pushed directly onto the mandrels of ink transfer rollers.
• transport means on or in which the sleeves are to be deposited by the means for transfer after removal from the storage device These transport then transport the sleeves to the printing press, where then remove these or other means for transfer the sleeves and there postpone at least partially on the spines of color transfer agent.
• the sleeves transfer means may push the sleeves onto the mandrel two-thirds the length of the sleeve.
• the means for transporting sleeves are also useful for conveying the sleeves along the reverse path, that is from the spikes of ink transfer rollers to the transport means, to the storage device and / or between the transport means and the storage device.
• the means for transferring sleeves sleeve receiving devices To be able to transport the sleeves, the means for transferring sleeves sleeve receiving devices.
• Sleeve receiving devices may be different. So these may be grippers that grip the sleeves clamped or exciting and then from a storage device in which the sleeves are perpendicular, remove and then postpone on the pins of ink transfer rollers.
• Sleeve receiving devices may for this purpose be attached to robot arms such that the sleeve receiving devices have three translational degrees of freedom and can be rotated about at least two axes of rotation.
• the means for transferring sleeves may comprise a device which moves the means of transport in three dimensions relative to the printing press. To push the sleeves then reaches a linear movement of the sleeves along their axes. It is particularly advantageous if the sleeve receiving devices at least partially protrude into the interior of the sleeve. In this way, the sleeves, which carry print motifs as print cylinder sleeves and as anilox roller sleeves for the color transport on their outer surfaces, can be taken without the risk of damage.
• a computing and control unit is provided.
• These control drive means for driving the means for transfer of sleeves such that sleeve receiving means of thorns of ink transfer rollers can be brought into positions in which a transfer of sleeves from the sleeve receiving means on the dome of ink transfer rollers, in the storage device or in the transport means or vice versa feasible ,
• the transport can be done in a particularly simple manner.
• the drive means may be, for example, electric motors which act on hinges or traversing units.
• the computing and control unit the layers of the dome of ink transfer rollers, where a change of the sleeves is to make, and the desired positions or and the actual positions of the sleeves in the printing press, in the transport and / or in the storage device. From the parameters of the print job, in particular from the predetermined assignment of certain sleeves to certain thorns of ink transfer rollers, so that the computing and control unit can equip the printing press without the intervention of the operator independently and error-free.
• the means for transporting sleeves comprise means for rotating or tilting the sleeves.
• the unilaterally exposed mandrels for the purpose of sleeve replacement are subject to gravity and are tilted depending on the rigidity of the bearing supporting the mandrels.
• This coaxiality can be constantly checked by sensors in a further embodiment of the invention.
• the sensors for this purpose constantly determine the relative angular position of the axis of the sleeve on the sleeve receiving device to the aligned with the axis of the ink transfer roller line.
• the relative angular positions determined by the sensors are transmitted to the arithmetic and control unit, which emits signals to actuators of the means for transporting sleeves until the sleeve receiving devices are positioned such that the axis of the dome of a ink transfer roller is aligned with the axis of a sleeve when the sleeve is received by the sleeve receiving device.
• the bearings of the pressure rollers are subject to wear, but also worn bearing parts are exchanged and therefore varies the Absenkrange the exposed ends of the mandrels. If such an exact positioning has taken place, for example, the means for transport or the sleeve receiving device can be firmly but detachably coupled to the mandrel in order to avoid de-adjustment. If, however, a maladjustment of sleeves and mandrel occur, which can be determined by monitoring means, such as a force measuring device, the up or Abschiebevorgang can be canceled, so that greater damage to the means for transfer, the sleeves and / or the printing machine avoided become.
• the means for transfer and / or the at least one printing press on displacement means with which the pods can be moved along their axes.
• the displacement means can act on the outer surfaces of the sleeves, so that they can pull and push them.
• sleeve receiving devices can be adapted to these different diameters. In a particularly simple way this is possible by the sleeve receiving devices are configured on and coupled off. Depending on the diameters of a sleeve to be transported, a suitable sleeve receiving device can be coupled to the means for transfer.
• the sleeve receiving devices are formed dome-shaped and are variable in their outer diameter.
• the sleeve receiving devices can thus be guided into the interior and then brought into a frictional operative connection.
• the sleeve is secured against displacement relative to the sleeve receiving device. If this is the case, the means for transfer can push the sleeves directly onto the mandrels of ink transfer rollers, so that at least partially can be dispensed with shifting means.
• a method for changing sleeves wherein the computing and control unit designs an array of sleeves in the transport, wherein in the transport means a position for receiving at least another sleeve remains free. In this way, a maximum number of sleeves can be transported in the transport.
• a sleeve of the printing press is first removed in an advantageous development of the method and fed to the free position in the transport. Subsequently, a new sleeve is removed from the transport and fed to the previously released mandrel. This process is repeated until all the sleeves of the printing machine to be changed have been removed from or removed from the printing press. This unnecessarily be avoided by the means for transfer paths that would arise if, for example, first removed all sleeves from the printing press and then new sleeves of the printing press would be supplied.
• FIG. 1 is a system for changing sleeves Fig. 2 view Il - II according to FIG. 1
• Fig. 1 shows a printing machine 1, which has side frames 2 and 3.
• the ink transfer rollers 4 are stored inside in bearing blocks, not shown.
• the bearing blocks are on rails, also not shown, which are mounted on the side frame 2, relative to the side frames displaced. In this way, the ink transfer rollers 4 can be employed on the counter-pressure cylinder, not shown, or against each other, so as to ensure a color transfer to printing material, which is guided over the impression cylinder.
• bearing blocks are also slidably mounted on rails. These brackets have bearings which are movable relative to the bearing blocks, so that the mandrels 5 of the ink transfer rollers 4 can be stored or released either.
• the ink transfer rollers 4 can be acted upon with sleeves 6, which can be pushed in the direction z on the mandrels 5.
• sleeves 6 so bearing blocks are first removed in the side frame 3 of the respective ink transfer rollers 4.
• the sleeve can be withdrawn against the direction z of the mandrel 5 and then a new sleeve 6 are pushed onto the mandrel.
• the printing unit 7 the situation is shown in which the sleeve 6a has been removed from the mandrel 5a.
• a transport device 8 For the delivery or removal of sleeves 6 is a transport device 8 is available, which can be moved relative to the printing machine 1.
• This transport device 8 can be configured as a pallet.
• the transport device 8 includes a new sleeve 6, which is to be supplied to the vacant mandrel 5a of the printing unit 7.
• this has a free position, which is designed as a vertically rising retaining pin 9.
• a transfer device 10 is provided for transferring the sleeves 6 and 6a between the printing machine 1 " and the transport device 8.
• a carrying element 11 is provided, which is of dome-shaped design and projects, for example, one third into the interior of the sleeve 6a ,
• the transfer device 10 is, as can be seen in Figures 1 and 2, suspended on rails 13, 14. This suspension allows a displacement of the transfer device 10 along a horizontal plane, which is spanned by the directional arrows x and z. Serve not shown drive motors.
• the transfer device also has two hinges 15 and 16 whose axes of rotation extend parallel to the directional arrow x.
• the hinges 15, 16 allow a height adjustment of the sleeves 6, 6a in the direction y.
• the sleeves 6, 6a can also be tilted so that these 6, 6a can be transferred from a vertical position to a horizontal position.
• the hinges are driven by drive motors, such as electric motors.
• the transfer device 10 Due to the described possibilities of movement of the transfer device 10, it is now possible to bring a sleeve 6, 6a in front of a mandrel 5, 5a such that the main axis of inertia of the sleeve 6, 6a is aligned with the axis of this mandrel 5, 5a. Due to the play of the hinges 15, 16, but also due to a slight pitching movement of the mandrels 5 when exposing lying in the region of the side frame 3 ends, it may happen in practice that the axes do not align, but diverge in the direction z. To counteract this effect, the transfer device 10 has a Justagerehgelenk 18 whose axis of rotation also extends in the direction x.
• sensors can be determined whether the axes are aligned. If the adjustment of the axes has taken place and the axes run coaxially, the transfer device 10 can be displaced in total in the direction z until the carrying element 11 contacts the mandrel 5, 5a. If this is the case, the sleeve 6, 6a is already pushed to a large extent on the mandrel 5, 5a. In order to be able to push the sleeve 6, 6a completely onto the mandrel, the slider 12 is displaceable in the direction z relative to the transfer device 10. The slider 12 acts on the lower arm 17 facing the front side of the sleeve 6, 6a.
• mandrels 5, 5a of ink transfer rollers 4 have small pins.
• the sleeves 6, 6a then have complementary grooves, so that when the sleeve is fully pushed onto the mandrel, the groove comprises the pin. After sliding the sleeve 6, 6a, this is thus automatically adjusted relative to the longitudinal axis, but also in the circumferential direction relative to the mandrel.
• the transfer device has a further rotary joint 19 whose axis of rotation runs concentrically with the sleeve axis, so that a rotation of the sleeve 6, 6a relative to the mandrel 5, 5a is possible before or during the pushing-on process, so that Pin and groove are engageable with each other.
• a sleeve 6, 6a to be deported from a mandrel 5, 5a the axes of the respective dome 5, 5a and the support member 11 are aligned, so that the axis of the sleeve is also aligned with the axis of the dome, when the sleeve on the support member 11 is pushed, but is still at least partially in contact with the mandrel.
• a pusher 20 the sleeve of the dome 5, 5a from.
• Such a pusher 20 may be provided on each mandrel, but is shown for simplicity only for the printing unit 7. After the sliding operation, the sleeve 6, 6a completely comprises the support member 11.
• the support member 11 is advantageously variable in its outer diameter, so that a frictional connection between the support member 11 and the sleeve 6, 6a can be produced. Subsequently, the sleeve 6, 6a can be completely withdrawn with the transfer device from the mandrel 5, 5a.
• sleeves 6, 6a with different inner diameters can be used. This is especially the case when first an adapter sleeve is pushed onto the mandrel 5, 5a and then a sleeve 6, 6a is pushed onto the adapter sleeve. So that all sleeves 6, 6a can be frictionally engaged with the carrying element from the inside, carrying elements 11, 11a, 11b with different outside diameters are provided.
• a support member may be provided for each usable in ' the printing press 1 inner diameter of the sleeves 6, 6a. Due to the degrees of freedom of movement of the transfer device 10, it can automatically change the support elements 11, 11a, 11b.
• the transfer device 10 has a coupling 21, which establishes or interrupts a compressed air and / or electrical connection between the transfer device 10 and the support element.
• FIG. 2 shows the view H-II according to FIG. 1.
• the side frame 3 has recesses 22 in the region of the individual inking units, through which the ink transfer rollers 4 can be reached such that the sleeves 6, 6a pass through the recesses 22 from the spikes 5, 5a can be deducted.
• the ink transfer roller 4 of each inking unit has been illustrated.
• two ink transfer rollers 4, namely an anilox roller and a pressure roller can be found on flexographic printing machines per inking unit.
• the rails 14 serve to transfer the transfer device 10 parallel to the front of the Sideframe 3 to move. In order for the transfer device 10 to have the greatest possible range of movement, the side frame 3 is free of stems or elevations.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rotary Presses (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)
• Materials For Medical Uses (AREA)
• Prostheses (AREA)
• Specific Conveyance Elements (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=35385321

Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (19)

Family Cites Families (42)

• 2004
  • 2004-07-31 DE DE102004037253A patent/DE102004037253B4/de not_active Expired - Fee Related
• 2005
  • 2005-07-25 RU RU2007107366/12A patent/RU2376144C2/ru not_active IP Right Cessation
  • 2005-07-25 US US11/659,033 patent/US20090028613A1/en not_active Abandoned
  • 2005-07-25 EP EP05764073A patent/EP1776231B2/fr not_active Expired - Lifetime
  • 2005-07-25 ES ES05764073T patent/ES2302216T3/es not_active Expired - Lifetime
  • 2005-07-25 AT AT05764073T patent/ATE388822T1/de not_active IP Right Cessation
  • 2005-07-25 DE DE502005003228T patent/DE502005003228D1/de not_active Expired - Lifetime
  • 2005-07-25 WO PCT/EP2005/008139 patent/WO2006013046A1/fr not_active Ceased
• 2011
  • 2011-03-21 US US13/064,365 patent/US20110283907A1/en not_active Abandoned
• 2013
  • 2013-07-29 US US13/952,911 patent/US10737482B2/en not_active Expired - Lifetime
• 2017
  • 2017-09-28 US US15/718,882 patent/US11331903B2/en not_active Expired - Lifetime
  • 2017-09-28 US US15/718,790 patent/US10857780B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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