EP0603261A1 - Magasin pour plaque d'impression d'une machine d'imprimerie et procede de changement des plaques d'impression. - Google Patents

Magasin pour plaque d'impression d'une machine d'imprimerie et procede de changement des plaques d'impression.

Info

Publication number
EP0603261A1
EP0603261A1 EP92919178A EP92919178A EP0603261A1 EP 0603261 A1 EP0603261 A1 EP 0603261A1 EP 92919178 A EP92919178 A EP 92919178A EP 92919178 A EP92919178 A EP 92919178A EP 0603261 A1 EP0603261 A1 EP 0603261A1
Authority
EP
European Patent Office
Prior art keywords
printing
cassette
printing plate
plate
magazine
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
Application number
EP92919178A
Other languages
German (de)
English (en)
Other versions
EP0603261B1 (fr
Inventor
Hermann Beisel
Peter Theobald Blaser
Dieter Hauck
Rudolph Hutzenlaub
Helmut Friedrich Jaeger
Hans-Georg Jahn
Robert Mueller
Anton Rodi
Nikolaus Spiegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0603261A1 publication Critical patent/EP0603261A1/fr
Application granted granted Critical
Publication of EP0603261B1 publication Critical patent/EP0603261B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1206—Feeding to or removing from the forme cylinder

Definitions

  • the invention relates to a device designed as a magazine for removing and / or feeding printing plates from or to a printing plate cylinder of a printing machine / in particular for an automatic or semi-automatic printing plate change, with a plate removal and a plate feed device.
  • a device of the type mentioned is known from European patent application 0 435 410. It serves to automate a printing plate change.
  • the magazine records old, used records.
  • the printing plate used is unclamped at one end of the printing plate cylinder and then - by appropriate rotation of the printing plate cylinder - partially inserted into the magazine.
  • the other end of the pressure plate is then released from the clamping device of the DruckpLattenzy Linders and the entire pressure plate with the plate discharge device is inserted into the magazine.
  • a new ,, printing plate to be used is then removed from the magazine by means of the plate feed device.
  • one end of the pressure plate is inserted into the corresponding clamping device of the DruckpLattenz Linders and clamped there and then - by rotating the DruckpLattenzy Linders - the pressure plate is completely pulled out of the magazine and around the outer surface of the DruckpLattenz Linders. Then the other end of the pressure plate is clamped and there is a clamping in the circumferential direction.
  • a magazine is assigned to each printing unit. For the removal and / or Feeding printing plates, it is necessary to move the magazine from an approximately vertical position to an inclined position in which the lower end of the magazine lies opposite the lateral surface of the printing plate cylinder. Since the space between the individual printing units is narrow for almost all printing presses, there is little space available for the magazines. The removal of old, used printing plates from the magazine or the introduction of new, used printing plates into the magazine is therefore associated with corresponding difficulties.
  • the invention has for its object to provide a device of the type mentioned, which allows the removal and / or supply of printing plates with a simple structure and safe operation and small designs and also the introduction into and removal from the magazine in a simple manner allows.
  • This object is achieved in that at least one cassette for the printing plates is removably assigned to the magazine.
  • This has the advantage that the new printing plates to be used can be inserted into the cassette outside the magazine, so that it is only necessary for the magazine to be “loaded” by inserting the cassette into the magazine.
  • a simple removal of old, used printing plates from the magazine is possible by inserting the used printing plates into the cassette located in the magazine by means of the plate removal device, so that only the cassette filled with used printing plates is removed from the magazine for removal got to.
  • the device according to the invention is suitable either for removing old, used printing plates or for feeding new, used printing plates, or else for removing and feeding printing plates, that is, there is then a printing plate change in which one used printing plate included and a printing plate to be used is supplied from the magazine.
  • the cassette both receives used printing plates and delivers printing plates to be used, it has a receiving space for the printing plates used and a receiving space for printing plates to be used. To start the operation of the printing press, it is then only necessary to assign this one cassette to the corresponding printing unit.
  • the magazine it is also possible for the magazine to be assigned two cassettes in a removable manner, of which a first cassette is used to hold used printing plates and a second cassette is used to dispense printing plates to be used. Therefore, two cartridges must be assigned to each printing unit of the printing press for operation.
  • the assignment of the cassette or cassettes is particularly simple if the magazine has at least one
  • a depressing device which acts on the printing plates to be used which remain in the cassette transversely to their planes in order to prevent them from tipping out of the cassette. This tilting out could otherwise take place in particular if the magazine is pivoted back into its vertical position after performing an automatic plate change Is.
  • At least the cassette that holds the (old) printing plates used preferably has an * ode with adjoining upper and U-shaped ones lower edge areas.
  • the U-leg of the upper edge area forming a holding edge is preferably longer than the corresponding U-leg of the lower edge area. This makes it possible that the rear edge of a printing plate used can first be pushed far below the longer U-leg of the upper edge area and then retractable, so that the front edge also passes under the corresponding U-leg of the lower edge area without the rear edge the pressure plate is released from the longer U-leg in the upper edge area.
  • the cassette for the new printing plates is preferably designed in the same way as the cassette for the old printing plates.
  • the lifting of a new printing plate to be used from the printing plate stack inside the cassette does not take place over the entire area at the same time, but in such a way that air can get between the plates in order to avoid "sticking" of the printing plates together.
  • suction can take place first through the rear, upper row of suction devices, then through the middle and finally through the lower row of suction devices.
  • the cassette which receives the printing plates to be used has spacers which are arranged between respectively adjacent printing plates. These spacers prevent a vacuum from forming between the individual printing plates. They can be designed as plastic tongues. They can preferably be fixed on the cassette in the resting position.
  • a spacer (or several spacers) is thus first clipped onto the cassette in such a way that it is arranged on the surface of an inserted pressure plate. Only then is another new printing plate inserted in the cassette.
  • the spacers are like this flexible so that they dodge when removing an underlying pressure plate.
  • the individual cassettes each have an identification, in particular a color identification, which is related to the associated printing unit, in particular in relation to the printing ink to be printed with the printing unit. If all of the cassettes for the individual printing units have been loaded outside the printing press, they can be inserted into the magazines of the individual printing units in a particularly simple manner on the basis of this identification, without being mixed up.
  • the magazine according to the invention is preferably constructed in a layered manner, the cassette receiving the printing plates used in a lower layer, the plate discharge device assigned to this cassette in a subsequent layer, the cassette having the printing plates to be used in a subsequent layer and a subsequent outer layer Layer which is arranged plate feed device associated with the above cassette.
  • the invention further relates to a method for removing and / or feeding printing plates from or to a printing plate cylinder of a printing press with a plurality of printing units, in particular for performing a printing plate change, individual sub-actions, such as in particular unclamping the printing plate trailing edges and / or unclamping the printing plate leading edges and / or removing the printing plates used and / or feeding the printing plates to be used and / or clamping the printing plate leading edges and / or pressing and clamping the printing plate trailing edges successively, that is to say one after the other, depending on the smallest positioning path of the individual printing plate cylinders on the corresponding printing units be carried out before the next sub-action takes place in a corresponding manner.
  • the removal, feeding or a printing plate change is not carried out completely on one printing unit of the printing press and then carried out on the next printing unit of the printing press, but instead the individual - preferably automatic - work steps (sub-actions) are carried out successively on the corresponding printing units, whereby the sequence of the printing unit when carrying out these partial actions is determined by the criterion of the smallest positioning path of the printing plate cylinders.
  • the partial action to be carried out first is preferably started at the printing unit, the printing plate cylinder of which has to be adjusted from the angular position just present in order to achieve the angular position necessary to carry out the partial action.
  • the operator can preferably trigger a fully automatic printing plate change on a control panel or the full release of a printing plate used or the fully automatic clamping of a printing plate to be used. For this it is necessary to first select a command that defines the work to be carried out. Then the fully automatic process is started by the operator (key press). The partial actions to be carried out then run according to the optimization principle mentioned above.
  • semi-automatic operation is also conceivable. This is also carried out with a minimal number of activities on the part of the operator and is intended to be carried out simultaneously with one Minimum of possible errors.
  • the operator controls the process of a printing plate change or the supply or removal of printing plates only via operating elements, and therefore does not have to handle the printing plates themselves even in the semi-automatic mode.
  • an operating element designed as a button allows different sub-actions to be carried out when depressed (for example, clamping the pressure plate or unclamping the pressure plate, or else various positioning processes of the associated pressure plate cylinder cylinder).
  • the execution of individual partial actions is stored in such a way that the repeated actuation of an operating element which triggers the previous partial action now triggers a different, different partial action when actuated again. This creates a maximum of operating security with a minimum of controls.
  • FIG. 1 shows a printing unit of a printing press in a schematic representation with a magazine located in the starting position
  • FIG. 2 shows the magazine of FIG. 1 in a middle position
  • Figure 3 shows the magazine in plate change position
  • FIG. 4 shows a representation according to FIG. 3, but the printing plate is already clamped onto the printing plate cylinder
  • FIG. 5 shows the return of the magazine to the starting position
  • FIG. 6 the approach to the middle position in order to accommodate a printing plate used
  • FIG. 7 the magazine in the P slat change L position when the printing plate used is received
  • FIG. 8 shows a representation corresponding to FIG. 7, but the printing plate is already completely in a cassette of the magazine
  • FIG. 9 the magazine again in the starting position
  • FIG. 10 shows a longitudinal section through the magazine
  • FIG. 11 shows a longitudinal section through the magazine according to FIG. 10, but in a different plane
  • FIG. 12 shows a cross section through the magazine
  • Figure 13 is a schematic view in longitudinal section
  • FIG. 14 shows a representation corresponding to FIG. 13, but with the printing plate inserted further
  • FIG. 15 the magazine in longitudinal section with the printing plate fully inserted
  • FIG. 16 shows a representation corresponding to FIG. 15, but in the state in which the front edge of the printing plate is inserted into a cassette of the magazine
  • FIG. 17 shows a cross section through the magazine in the area of a plate discharge device
  • FIG. 18 shows a longitudinal section through the cassette
  • FIG. 19 an operating panel on the respective printing units of the printing press
  • FIG. 20 shows a flow diagram for a fully automatic printing plate change
  • FIG. 21 shows a flow diagram of a semi-automatic printing plate change
  • Figure 22 is a flow chart for semi-automatic plate removal
  • Figure 23 is a flow chart for semi-automatic printing plate feed.
  • the printing unit 2 has a device designed as a magazine 4.
  • the magazine 4 which is provided in a printing machine 3 with a plurality of printing units 2 on each printing unit 2 of the printing machine 3, a printing plate which is to be newly used can also only be fed in or an already used printing plate can only be removed (FIGS. 1 to 9).
  • the magazine 4 is in its starting position (vertical position). In this idle state, the magazine 4 is secured against tipping (locking). Normal machine operation (printing operation) is only possible in this lower, vertical position of magazine 4.
  • the magazine 4 has two receiving shafts 5 and 6, into each of which a cassette 7 or 8 can be inserted from above (FIG. 1 ) .
  • the cassette 7 serves to hold old printing plates already used in the printing machine 3.
  • the cassette 7 is designed such that it can hold several, for example five, printing plates used. These printing plates form a stack of backing plates in the interior of the cassette 7, that is to say the individual printing plates lie flat on one another.
  • the cassette 8 is used to hold new printing plates that are still to be used. It can also accommodate several, in particular five, printing plates at the same time, these printing plates also being assigned to one another over a large area. To remove the printing plates used, it is therefore only necessary to pull the cassette 7 out of the receptacle 5.
  • the cassette 8 can be equipped with new printing plates that are still to be used. If this has taken place, the cassette 8 is inserted into the receiving shaft 6 of the magazine 4, so that it is available for feeding to the printing plate cylinder 1 of the corresponding printing unit 2.
  • the individual positions of the magazine 4 which are assumed for removing and / or feeding printing plates are explained below. If a printing plate 9 to be used is to be supplied to the printing plate cylinder 1, the magazine 4 moves vertically upwards into a central position, as shown in FIG. 2, and then swivels into an inclined position, as shown in FIG. 3, for example about 45 °. By means of a plate feed device of the magazine 4 to be explained in more detail the printing plate 9 to be used is then fed to the printing plate cylinder 1 and clamped thereon (FIG. 4). The magazine 1 then pivots back into its vertical position and then lowers again into the lower position (starting position) according to FIG. 5.
  • the printing plate 9 When the print job has been completed, the printing plate 9 must be removed from the printing plate cylinder 1. For this purpose, a lifting device in turn lifts the magazine 4 into the center position (FIG. 6). This is followed - according to FIG. 7 - by pivoting into the oblique position and - by unclamping the rear edge of the plate and turning the printing plate cylinder 1 backwards - the printing plate 10 used is partially pushed into the magazine 4 (FIG. 7). According to FIG. 8, the printing plate 10 used is then completely replaced by one to be described in more detail
  • FIGS. 10 and 11 are in a horizontal position relative to the Side edges of the drawing sheet reproduced.
  • the positions shown in FIGS. 10 and 11 correspond to the inclined positions according to FIGS. 3, 4, 7 and 8.
  • the magazine 4 is constructed in layers. It has an outer layer 11 from which the cassette 7 is received. A plate removal device 13 assigned to the above cassette 7 is accommodated in a subsequent layer 12. The cassette 8 is arranged in a subsequent layer 14.
  • a further layer 15 takes one
  • the plate removal device 13 has first holding means 17, which are designed as activatable first suction elements 18.
  • the suction cups 19 of the first suction members 18 can be extended in the direction of the pressure plates 10 (for the sake of clarity, only one pressure plate 9 or 10 is shown in FIGS. 10 and 11).
  • the first suction elements 18 are arranged on a first carriage 20 which can be moved along a first guide 21.
  • the guide 21 has two guide parts Le 22, spaced apart from one another and running parallel to one another, which are designed as guide rods 23.
  • the guide rods 23 are surrounded by guide parts 24 of the first carriage 20 with a slight play.
  • the first carriage 20 can be moved along the first guide 21 by means of a drive device 25.
  • the drive device 25 has a fixed, non-ferromagnetic tube 26 (for example an aluminum tube) which extends from the top to the bottom of the magazine 4. Inside the tube 26 is a Magnetic piston 27 which can be moved back and forth within the tube 26 by means of a pressure medium and can be positioned in desired positions.
  • a ferromagnetic component 28 On the first carriage 20 there is a ferromagnetic component 28 which is designed as a steel ring 29. Movement of the magnetic piston 27 therefore has the effect that the steel ring 29 and thus the carriage 20 are taken along via the magnetic field.
  • a suction element 18 is arranged on both sides of the drive device 25.
  • Each suction element 18 is fastened to a lever 30 which can be pivoted in the direction of the pressure plate 10 by means of a hinge 31.
  • the position of the levers 30 is determined by a positive control 32 (see also FIG. 13) which is formed by a roller 33 which is connected to each lever 30 and which runs in a stationary guide rail 34.
  • Each guide rail 34 has in the upper region of the magazine 4 on a taper 35 ( Figure 13), so that when moving to an upper position 20 the rollers 33 run onto the taper 35 and thereby the lever 30 and thus the suction members 18th pivot towards the pressure plate 10.
  • Springs 115 are used to return the lever 30 and to rest the rollers 33 on the bevels 35.
  • actuatable hold-down devices 36 are arranged on opposite sides, which serve to act upon the pressure plate 10 in this area. Furthermore, 4 guide rollers 37, 38 and 39 are arranged in the lower region of the magazine. The function of removing a printing plate 10 used from the printing plate cylinder 1 into the cassette 7 of the magazine 4 is described below.
  • the magazine 4 is first brought into the required inclined position, corresponding to FIGS. 6 and 7.
  • a rear edge clamping device 40 of the printing plate cylinder 1 then opens and releases the angled printing plate rear edge 41 clamped there. As a result of the inherent elasticity, the rear end of the pressure plate 10 strikes against the guide roller 37 (FIG. 13).
  • the printing plate 10 is inserted into the cassette 7 of the magazine 4.
  • the guide rollers 37, 38 and 39 help in inserting the trailing edge end of the printing plate 10.
  • Guide rails 116 can be arranged which are in cutouts in the Slide the pressure plate trailing edge 41. This insertion is shown in FIG. 13 with a dotted line and in FIG. 14 with an excellent line. If the pressure plate 10 has been moved approximately one third into the magazine 4, the suction elements 18 of the carriage 20 located in the lowest position within the magazine 4 are activated, that is to say the suction cups 19 move in the direction of the pressure plate 10 to be held and suck on the pressure plate 10.
  • the carriage 20 moves while simultaneously turning the printing plate cylinder 1 backwards into its upper position, as a result of which the printing plate 10 is completely drawn into the magazine 4.
  • the front edge 44 of the pressure plate 10 is also unclamped. If the carriage 20 reaches the upper end region of the magazine 4, the rollers 33 run onto the
  • Printing plate trailing edge 41 passes under a holding edge 43 of the cassette 7.
  • the hold-down devices 36 then press the pressure plate 10 down in the region of its front edge 44 (FIG. 16), so that the front edge 44 is lower than one Holding edge 45 of the cassette 7 comes to rest.
  • the front edge 44 is then brought under the holding edge 45 by pulling down the pressure plate 10.
  • the printing plate 10 is thus securely arranged in the cassette 7.
  • the printing plates 10 used are removed from the magazine 4 in a simple manner by pulling the cassette 7 out of the associated receiving shaft 5.
  • FIG. 18 shows a longitudinal section through a cassette 7. It has a base 46, to which the upper and lower edge regions 47, 48, which are U-shaped, are connected.
  • the upper edge region 47 has a U-leg 49 and the lower edge region 48 has a U-leg 50, which forms the holding edge 45.
  • the length x of the U-leg 49 is greater than the length y of the U-leg 50.
  • the free distance between the ends of the U-legs 49 and 50 is selected such that a pressure plate 10 to be introduced is first pushed under the U-leg 49 and then swung into the interior of the cassette 7, the front edge 44 being the U-leg 50 happens.
  • Each cassette 7 or 8 has a handle 51 in its upper area in order to facilitate insertion and removal from the associated receiving shaft 5 or 6 of the magazine 4. Furthermore, the corresponding cassette 7 or 8 can also be transported more easily to the printing press by means of the handle 51. Furthermore, each cassette 7 or 8 has an identification, in particular a color identification (this can be arranged, for example, on the handle 51), which is related to the associated printing unit 2 of the printing press 3. For example, the handle 51 can have a color that corresponds to the printing color of the associated printing unit 2. In this way, a clear assignment is given.
  • spacers to be in the form of two rows of individual tongues, one tongue being placed between two pressure plates on both sides when the pressure plates are inserted. It is expedient to arrange these tongues in the area of the front row of suckers which first comes into action.
  • spacers are first clipped in before another printing plate 9 is placed on a printing plate 9 already in the cassette 8. The spacers are so flexible that they dodge when removing the underlying pressure plate.
  • the magazine 4 In order to supply a printing plate 9 from the cassette 8 by means of the plate feed mechanism 16 to the printing plate cylinder 1, the magazine 4 is - as already mentioned - in its inclined position in which support rollers 52 are supported on the bearer rings 53 assigned to the printing plate cylinder 1.
  • the plate feed device 16 has, on a second carriage 54, second holding means 55, which are also designed as activatable suction members 56 (second suction members).
  • the suction members are - according to FIGS. 10 and 12 - each four of them in a row spaced apart, three rows being formed on the second carriage 54. Provision can also be made to provide the lower row of suction members 56 closest to the printing plate cylinder 1 with four suction members 56 and the remaining rows with three each.
  • Suction elements 56 are attached to levers 57 which can be pivoted about axes 58.
  • Pressure cylinders 59 are provided for actuating the levers 57; furthermore, the levers 57 of. a spring 60 acted upon.
  • a preferably optically operating sensor 61 is arranged in the upper area of the magazine 4 and monitors the position of the associated pressure plate 9, in particular its position of the rear edge 41.
  • An activatable depressing device 62 for loading the pressure plates 9 is arranged between the upper and the middle row of suction elements.
  • the magazine 4 has at its lower end a displaceable pressing element 63 which is designed as a pressure roller 64 which can be displaced radially to the printing plate cylinder 1.
  • the second carriage 54 can be moved along a second guide 66 (FIG. 12) by means of a piston / cylinder unit 65.
  • the second guide is formed by fixed profile rails 67, in which guide rollers 68 of the carriage 54 run.
  • the lowest suction members 56 assigned to the printing plate cylinder 1 can first come into operation, the levers 57 being in their undeflected position. Then the suction members 56 of the middle row of suckers and then the suction members 56 of the top row of suckers become active. Another order is conceivable, for example first the middle suction cups and then the ones on the edge. By not taking place simultaneously, but sequentially carried out activating the Saugorgan #2n, the printing plate lying at the top, new 9 is raised so as to form the 'underlying further pressure plate 9, no or only a very low vacuum. This ensures that only one pressure plate 9 is raised.
  • the aforementioned spacers can be arranged between the individual pressure plates 9, which additionally counteracts the formation of a vacuum. Is the pressure plate 9 raised, the carriage 54 is pushed by means of the piston / cylinder unit 65 in the direction of the pressure plate cylinder 1. The front edge 44 of the pressure plate 9 enters the
  • Leading edge clamping device 69 so that the leading edge 44 of the pressure plate 9 is firmly clamped. Then the printing plate cylinder 1 rotates in the forward direction and pulls the printing plate 9 onto its outer surface. Due to the bypass, the suction elements are only subjected to a slight negative pressure, so that they still hold the pressure plate, but this can be moved on the suction elements by the rotation of the plate cylinder. Before the two upper rows of suction pads pass through the pressure plate trailing edge, these are each depressurized and brackets 70 ensure that the angled trailing edge glides past the suction elements without collision. By their proximity to
  • the printing plate 9 is relatively rigid in the area of the lower row of suction elements 56, so that a lever 57, which is designed as a plate with a hinge, is used to pass the angled printing plate trailing edge 41 and on which the entire row of suction cups is arranged, or a plurality of levers 57 are pivoted into their position shown in FIG. 10 by means of one or more cylinders 59, so that the pressure plate rear edge 41 can pass the row of suction cups properly.
  • the pressure roller 64 is then moved radially in the direction of the printing plate cylinder 1, as a result of which the angled printing plate trailing edge 41 into the
  • Trailing edge clamping device 40 of the printing plate cylinder 1 is pressed in.
  • the trailing edge clamping device 40 closes and then clamps the printing plate by appropriate displacement in the circumferential direction of the printing plate cylinder 1. Then the carriage 54 moves back to its original position in order to grasp the next printing plate 9 at the given time.
  • the device moves back to its original position by depressurizing the cylinders 59 so that the springs 60 can cause the lever (s) 57 to return to their original position. Then the depressing device 62 then comes into action, which ensures that the remaining printing plates 9 remain clean in the cassette 8 and cannot tip out, in particular when the magazine 4 is pivoted back into its vertical position.
  • FIG. 10 shows that elastic brackets 70 are associated with the upper and middle rows of the suction members 56. However, this is only necessary for such rigid printing plates, the rear edge of which does not fall down due to their own weight.
  • the elasticity of the brackets 70 allows the pressure plate 9 to be used to be sucked in, that is to say the brackets 70 do not interfere with this process.
  • the brackets 70 ensure that that the angled pressure plate rear edge 41 does not get caught on the suckers of the suction members 56.
  • a printing machine 3 provided with a plurality of printing units 2 that individual partial actions, such as in particular unclamping the printing plate trailing edges 41 and / or unclamping the printing plate leading edges 44 and / or removal of the printing plates 10 used and / or feeding of the printing plates 9 to be used and / or clamping of the printing plate leading edges 44 and / or pressing and clamping of the printing plate trailing edges 41, successively, that is to say one after the other, depending on the smallest positioning path of the individual printing plate cylinders 1 on the corresponding printing units 2 are carried out before the next partial action takes place in a corresponding manner.
  • step 71 in the flow diagram of FIG. 20.
  • the relevant printing units 2 are then selected, as well as the Specification of the function, that is, the action to be carried out. This is done with step 72.
  • step 73 the operator presses a start button on the control panel (step 73) and step 74 takes action. If a correction is to take place before the start button is pressed, the loop 75 can be run through. After pressing the start button (step 73), the following sub-actions, which are now described, run fully automatically.
  • step 74 all selected printing units 2 are switched to printing.
  • step 76 a positioning for removing a printing plate 10 used takes place on the printing unit 2 in which the shortest positioning path is present.
  • the printing plate cylinders 1 of the individual printing units 2 are rigidly coupled to one another (via gears, etc.), so that the rotation of a printing plate cylinder brings about a corresponding rotation of all other printing plate cylinders.
  • step 77 the printing plate rear edge 41 of the printing plate 10 is unclamped on the corresponding printing unit 2 (opening of the trailing edge clamping device 40). Then the printing plate cylinder 1 in question rotates backwards (step 78). This continues until the plate unclamping position is present in one of the other printing units 2.
  • step 79 this further pressure plate rear edge 41 is then unclamped. Steps 78 and 79 are repeated until the printing plate trailing edges 41 of all printing plates 10 are unclamped.
  • step 80 the backward rotation then takes place into the unclamping position of the printing plate leading edge 44 in the corresponding printing unit 2, in which the smallest positioning path has to be traversed.
  • step 81 the pressure plate leading edge 44 is then unclamped by automatically opening the leading edge clamping device 69. These partial actions are repeated “until all printing plates 10 are unclamped.
  • step 82 the printing plate cylinders 1 are trimmed forward until the first - taking into account the smallest positioning path Printing plate leading edge 44 of the printing plates 9 to be fed reaches the insertion position.
  • step 83 the clamping takes place there (likewise step 83).
  • step 84 the printing plate cylinders 1 are rotated forward until - again taking into account the smallest positioning path - one of the printing plate trailing edges 41 of the printing plates 9 comes into a position for insertion into the associated trailing edge clamping device 40 of the corresponding printing plate cylinder 1.
  • step 85 the pressure is then applied to the pressure plate rear edge 41 and the clamping. These partial actions are repeated in succession until all printing plates 9 are clamped.
  • step 86 all printing units 2 are switched electrically from pressure.
  • step 87 the printing plate cylinder 1 rotates forward, which is necessary so that all printing units 2 reach this operating position mechanically.
  • An indicator light 84 indicates" Fault: printing unit ". Furthermore, there is a illuminated pushbutton 85 for the operation" clamp / unclamp "and a further illuminated pushbutton 86 is used for operation" Delete conversion ". Finally, an” emergency stop “can be initiated with an impact switch 87.
  • Printing plate change or the removal or supply of printing plates provided that different partial actions can be triggered in succession with one and the same control element. If a certain partial action is started with an operating element, the completion of this partial action is registered by the printing press or its control. If the same control element is then operated again at a later point in time, a different partial action is carried out. Thus, only a few control elements are required and, moreover, the good overview largely prevents the operator from accidentally actuating a wrong control element.
  • step 88 of the flow chart of FIG. 21 the semi-automatic printing plate change is started.
  • the "save" then takes place in step 89, that is to say the printing unit protection of the associated printing unit 2 opens.
  • push button 83 actuated, whereby positioning is carried out in the shortest possible way towards the end of the plate.
  • the illuminated pushbutton 85 is then actuated by the operator in step 91, whereby the trailing edge 41 of the printing plate is unclamped.
  • step 92 the pushbutton 83 "positioning" is again pressed, as a result of which the printing plate cylinder 1 is rotated backwards to the beginning of the plate, with the printing plate leading edge 44 automatically being unclamped when this position is reached.
  • step 93 the illuminated pushbutton 85 is then actuated again, as a result of which the front edge 44 of a new printing plate 9 is clamped in.
  • step 95 is then clamped by actuating the illuminated pushbutton 85, the printing plate end (printing plate trailing edge 41).
  • step 96 the positioning then takes place by actuating the pushbutton 83, as a result of which the corresponding plate end of the next printing unit 2 is reached in the shortest possible way.
  • step 97 unlocking is then carried out by pressing the selection button 89.
  • step 98 the data is saved by pressing the selection button 79, which opens the printing unit protection.
  • step 100 relates to positioning (pushbutton 83), so that the shortest route to the end of the plate is driven.
  • the illuminated pushbutton 85 is then actuated in step 101, as a result of which the
  • step 102 positioning (pushbutton 83) takes place Reverse rotation of the associated printing plate cylinder 1 to the beginning of the plate with automatic unclamping of the printing plate leading edge 44 when this position is reached.
  • step 103 then repositions (pushbutton 83) so that the shortest route to the plate end of the next printing unit 2 is reached.
  • the last step 104 is then used to unlock (selection key 79).
  • step 105 a backup is carried out by actuating the selection key 79-; the printing unit protection opens.
  • step 107 positioning is carried out by pressing pushbutton 83; the shortest way is to turn to the start of the printing plate.
  • step 108 the printing plate leading edge 44 is clamped by actuating the illuminated pushbutton 85.
  • step 109 the pressure is then switched and the printing plate is moved forward to the printing plate trailing edge 41 by actuating the pushbutton 83 "positioning”.
  • step 110 the plate is clamped at the rear by actuating the illuminated pushbutton 85.
  • step 111 "positioning" (pushbutton 83) then takes the shortest route to the start of the printing plate 2 of the next printing unit 2.
  • an unlocking takes place (selection key 79).

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Screen Printers (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Abstract

L'invention concerne un dispositif conçu comme un magasin servant à amener des plaques d'impression à un cylindre de porte-plaque d'une machine d'imprimerie, et/ou à ôter lesdites plaques d'impression dudit cylindre, pour réaliser en particulier le changement automatique des plaques d'impression. Ledit magasin est pourvu d'un dispositif d'amenée et de retrait de plaques d'impression. Selon l'invention, au moins une cassette (7, 8) contenant les plaques d'impression (9, 10) est associée, de façon amovible, au magasin (4). L'invention concerne également un procédé de changement de plaques d'impression.
EP92919178A 1991-09-12 1992-09-07 Magasin pour plaque d'impression d'une machine d'imprimerie et procede de changement des plaques d'impression Expired - Lifetime EP0603261B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4130359A DE4130359C2 (de) 1991-09-12 1991-09-12 Vorrichtung zum Ab- und/oder Zuführen von Druckplatten einer Druckmaschine
DE4130359 1991-09-12
PCT/EP1992/002063 WO1993004865A1 (fr) 1991-09-12 1992-09-07 Magasin pour plaque d'impression d'une machine d'imprimerie et procede de changement des plaques d'impression

Publications (2)

Publication Number Publication Date
EP0603261A1 true EP0603261A1 (fr) 1994-06-29
EP0603261B1 EP0603261B1 (fr) 1996-03-27

Family

ID=6440455

Family Applications (3)

Application Number Title Priority Date Filing Date
EP92919178A Expired - Lifetime EP0603261B1 (fr) 1991-09-12 1992-09-07 Magasin pour plaque d'impression d'une machine d'imprimerie et procede de changement des plaques d'impression
EP92919011A Expired - Lifetime EP0603246B1 (fr) 1991-09-12 1992-09-07 Dispositif pour l'enlevement et/ou l'amenee des plaques d'impression d'une machine d'imprimerie
EP92919010A Expired - Lifetime EP0603245B1 (fr) 1991-09-12 1992-09-07 Dispositif et procede pour le retrait des plaques d'impression d'une machine d'imprimerie

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP92919011A Expired - Lifetime EP0603246B1 (fr) 1991-09-12 1992-09-07 Dispositif pour l'enlevement et/ou l'amenee des plaques d'impression d'une machine d'imprimerie
EP92919010A Expired - Lifetime EP0603245B1 (fr) 1991-09-12 1992-09-07 Dispositif et procede pour le retrait des plaques d'impression d'une machine d'imprimerie

Country Status (9)

Country Link
US (3) US5537926A (fr)
EP (3) EP0603261B1 (fr)
JP (3) JP2669934B2 (fr)
CN (3) CN1030048C (fr)
AT (3) ATE122965T1 (fr)
CA (2) CA2118583C (fr)
DE (4) DE4130359C2 (fr)
HK (2) HK12396A (fr)
WO (3) WO1993004863A1 (fr)

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Also Published As

Publication number Publication date
JPH07500293A (ja) 1995-01-12
WO1993004864A1 (fr) 1993-03-18
EP0603245A1 (fr) 1994-06-29
CN1029212C (zh) 1995-07-05
ATE135970T1 (de) 1996-04-15
ATE123255T1 (de) 1995-06-15
CN1030048C (zh) 1995-10-18
CN1071370A (zh) 1993-04-28
DE4130359A1 (de) 1993-03-18
CA2118582A1 (fr) 1993-03-18
ATE122965T1 (de) 1995-06-15
JPH07500295A (ja) 1995-01-12
JPH07500294A (ja) 1995-01-12
CN1071368A (zh) 1993-04-28
CA2118583A1 (fr) 1993-03-18
US5495805A (en) 1996-03-05
WO1993004865A1 (fr) 1993-03-18
WO1993004863A1 (fr) 1993-03-18
JP2669934B2 (ja) 1997-10-29
CN1071369A (zh) 1993-04-28
JP2760898B2 (ja) 1998-06-04
CA2118583C (fr) 1998-09-15
US5537926A (en) 1996-07-23
EP0603246B1 (fr) 1995-05-31
US5443006A (en) 1995-08-22
DE59205874D1 (de) 1996-05-02
JP2669935B2 (ja) 1997-10-29
CA2118582C (fr) 1997-01-07
HK122496A (en) 1996-07-19
HK12396A (en) 1996-02-02
DE59202367D1 (de) 1995-06-29
EP0603246A1 (fr) 1994-06-29
DE59202416D1 (de) 1995-07-06
CN1029213C (zh) 1995-07-05
EP0603245B1 (fr) 1995-05-24
DE4130359C2 (de) 1997-04-17
EP0603261B1 (fr) 1996-03-27

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