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EP1790472A2 - Druckmaschine mit vom Gestell getragenen Plattenverriegelungsvorrichtungen - Google Patents

Druckmaschine mit vom Gestell getragenen Plattenverriegelungsvorrichtungen Download PDF

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Publication number
EP1790472A2
EP1790472A2 EP06291662A EP06291662A EP1790472A2 EP 1790472 A2 EP1790472 A2 EP 1790472A2 EP 06291662 A EP06291662 A EP 06291662A EP 06291662 A EP06291662 A EP 06291662A EP 1790472 A2 EP1790472 A2 EP 1790472A2
Authority
EP
European Patent Office
Prior art keywords
plate
section
cylinder
actuator
region
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.)
Withdrawn
Application number
EP06291662A
Other languages
English (en)
French (fr)
Other versions
EP1790472A3 (de
Inventor
Sylvain Lepinay
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.)
Goss International France SAS
Original Assignee
Goss Systemes Graphiques Nantes SAS
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
Priority claimed from FR0511170A external-priority patent/FR2892660B1/fr
Application filed by Goss Systemes Graphiques Nantes SAS filed Critical Goss Systemes Graphiques Nantes SAS
Publication of EP1790472A2 publication Critical patent/EP1790472A2/de
Publication of EP1790472A3 publication Critical patent/EP1790472A3/de
Withdrawn legal-status Critical Current

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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
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1243—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by pivotal or swivelling motion, e.g. by means of a rocking lever

Definitions

  • the present invention relates to a printing press of the type comprising a frame and at least one plate cylinder extending along a longitudinal axis and rotatably mounted on the frame to be rotatable about its longitudinal axis, the press comprising at least one actuator and the plate cylinder comprising at least one plate locking bar extending in the plate cylinder, at least one section of the bar being movable under the action of the actuator between a position extracted locking and a retracted position of unlocking a plate on the plate cylinder.
  • the invention applies for example to an offset printing press.
  • the plate locking actuators are pneumatic cylinders arranged on the sides of the plate cylinder and carried by the latter.
  • An object of the invention is to solve this problem by providing a press of the aforementioned type which is easier and less expensive maintenance.
  • the invention relates to a press of the aforementioned type, characterized in that the actuator is carried by the frame.
  • Figure 1 schematically illustrates an offset printing press 1.
  • the press 1 comprises two double printing groups 3 arranged one above the other.
  • Each printing unit 3 comprises two pairs of plate cylinders 5 and blanket holder 7.
  • the blanket cylinders 7 of the same printing unit 3 are, during the operation of the press 1, applied against each other and a paper strip 9 then runs vertically between the blanket cylinders 7 of the two groups.
  • the plate cylinders 5 and blanket 7 are rotatably received in a frame 11, which typically comprises two side walls 13 between which the cylinders 5 and 7 extend longitudinally.
  • a frame 11 typically comprises two side walls 13 between which the cylinders 5 and 7 extend longitudinally.
  • the cylinders 5 and 7 can rotate about their respective longitudinal axes to provide the various functions of the press.
  • the plate cylinders 5 have similar structures so that only one will be described later.
  • the outer surface 15 of the cylinder 5 comprises four regions 17, 19, 21 and 23 indicated by dotted lines in FIG. 2. Each region 17, 19, 21 and 23 is intended to receive a plate 17P, respectively. , 19P, 21P, 23P.
  • the plates 17P and 21P have been shown in FIG.
  • the first region 17 and the second region 19 are arranged next to one another along the longitudinal axis L of the cylinder 5.
  • the third region 21 and the fourth region 23 are arranged transversely next to the first region 17 and the second region 19.
  • the regions 17 and 21 on the one hand, and 19 and 23 on the other hand are diametrically opposite with respect to the L axis.
  • the dimensions of the regions 17, 19, 21 and 23 are, for example, such that they can receive plates 17P, 19P, 21P and 23P, each intended to print, for example, a page in broadsheet format arranged vertically or two pages in tabloid format arranged horizontally one above the other.
  • the cylinder 5 is equipped with two locking bars 25A and 25B which extend longitudinally inside the cylinder 5. Only the left end of the bar 25A is visible in FIG.
  • the two bars 25A and 25B are arranged substantially diametrically opposite to the longitudinal axis L and have similar structures. Thus, only the structure of the bar 25A will be described later.
  • the bar 25A is disposed in a housing 27A formed longitudinally in the cylinder 5 near its outer surface 15.
  • the housing 27A opens into the outer surface 15 via a slot 29A and the locking bar 25A comprises two sections 31A successively arranged next to each other along the longitudinal axis L.
  • Figure 4 illustrates the left section 31A which will be described later, the straight section 31A having a symmetrical structure with respect to a vertical median plane of the press.
  • the left section 31A is rotatably mounted in the housing 27A of the cylinder 5 through bearings 33A provided at the longitudinal ends of the section 31A.
  • the left section 31A can rotate about its axis LT with respect to the cylinder 5.
  • the section 31A is provided, for example, with three traction blades 35A successively arranged next to each other along the longitudinal axis LT of the section 31A.
  • the blades 35A have their free ends 37A folded to form hooks. These hooks 37A are intended to draw the rear edge 39 of the corresponding plate, here the plate 21 P (fig.3). Conventionally, this rear edge 39 is folded inward to be received in the slot 29A. Similarly, the front edge 41 of each plate, and in particular of the plate 17P visible in FIG. 3, is folded inwards to be engaged in the corresponding slot, in this case the slot 29A in FIG.
  • a pin 43A projecting inside the slot 29A is then received in an opening in the front edge 41 of the plate 17P, to ensure its proper positioning.
  • a spring 44A is fixed in a groove 46A via a pin not shown. The spring 44A is supported on the edge 41A to press against the left wall (in Figure 3) of the slot 29A.
  • the left section 31A is rotatable about its longitudinal axis LT between an extracted locking position, illustrated in Figure 3, and a retracted unlocking position.
  • the hooks 37A are engaged behind the rear edge 39 of the plate 21 P and draw the latter circumferentially in the counter-clockwise direction in FIG. 3.
  • the plate 21 P is also retained by its front edge 41 engaged in the other slot 29B of the cylinder 5, the plate 21 P is thus tensioned and locked.
  • the section 31A rotates about its longitudinal axis LT clockwise in Figure 3, thus releasing the hooks 37A of the rear edge 39 and thus allowing the removal of the plate 21 P .
  • a movement arm 45A is secured to the outer longitudinal end of the left section 31A. This arm 45A is received in a clearance 47A formed in the cylinder 5.
  • the arm 45A being rotationally integral with the left section 31A, it is thus rotatable about the longitudinal axis LT of the section 31A between an extracted position and a position retracted.
  • a compression spring 49A (FIG. 2) interposed between the cylinder 5 and the arm 45A recalls the arm 45A in its extracted position.
  • the two sections 31A of the bar 25A can be moved independently of one another, by their respective arm 45A, to reach their respective positions of locking and unlocking.
  • the press 1 comprises two actuators 51 (FIG 5) each carried by the corresponding fixed side wall 13 of the frame 11. More specifically, each actuator 51 is mounted on a support 53 secured to the corresponding side wall 13.
  • the actuators 51 are for example pneumatic cylinders. Their rods are connected to levers 55 pivotally mounted on the supports 53. The rod of each cylinder 51 is connected to one end of the lever 55 corresponding, the other end of the lever 55 carrying a roller 57 of support on the arms 45A and corresponding 45B.
  • each roller 57 is movable, under the action of the corresponding actuator 51, between a bearing position on the arm 45A or the arm 45B and an unobstructed position of the corresponding arms 45A and 45B.
  • the roller 57 In its support position, the roller 57 is brought radially closer to the longitudinal axis L of the cylinder 5. If an arm 45A or 45B is located opposite the roller 57, the roller 57 is pressed on the arm which is then in position retracted.
  • the roller 57 In its disengaged position, the roller 57 is further spaced from the longitudinal axis A and can not interfere with an arm 45A or 45B.
  • the press 1 further comprises a plate holding bar 59 which extends longitudinally along the entire length of the surface 15 of the cylinder 5.
  • This bar 59 is provided with rollers 61 intended to come to press the plates 17P, 19P, 21P and 23P on the outer surface 15 of the cylinder 5, as will be described later.
  • the bar 59 is articulated on the supports 53 to be movable between a position spaced from the cylinder 5 and a position close to the cylinder 5.
  • rollers 61 In the close position, the rollers 61 bear either on the surface 15 of the cylinder 5, or on plates disposed on the latter. In the spaced position, the rollers 61 are remote from the outer surface 15 and the plates it could carry.
  • actuators 63 which are for example pneumatic cylinders.
  • actuators 63 The operation of these actuators 63 is synchronized, unlike that of the actuators 51 which can independently control the movement of the sections 31A and 31B of the same locking bar 25A or 25B, as will be seen later.
  • the operation of the actuators 51 and 63 is controlled by a control unit, for example electronic to perform the functions described below.
  • FIGS. 6 to 10 illustrate, in particular, different steps of a method of placing a plate on the plate cylinder 5. In the example described, this is the plate 17P.
  • the concerned roller 57 that is to say the roller 57 left, is in the disengaged position and the holding bar 59 is in spaced position.
  • the locking bars 25A and 25B are in the locking position.
  • the plate cylinder 5 does not occupy a particular angular position.
  • roller 57 is automatically brought into the support position on the arm 45A, moving the latter in the retracted position ( Figure 7).
  • the left portion 31A of the bar 25A then moves to the unlocked position.
  • the rear edge 39 of the plate 21P, if it is present on the cylinder 5, is held in position by the rollers 61.
  • the control unit then automatically controls the rotation of the cylinder 5 in a clockwise direction in FIG. 7 until the rollers 61 are located in line with the slot 29A.
  • the left roller 57 is then returned to the disengaged position and the left section 31A (in FIG. 2) returns to the locking position so that the rear edge 39 of the plate 21 P is then held by the left section 31A.
  • the rotation of the plate cylinder 5 in the clockwise direction can then continue substantially on a half-turn, the rollers 61 and the associated blanket cylinder 7 ensuring the winding and progressive plating of the plate 17P on the region 17 of the outer surface 15 of the cylinder 5, as illustrated in FIG. 8.
  • the rotation of the cylinder 5 is automatically stopped and the left roller 57 is automatically brought to the support position on the left arm 45B and the left section 31 B goes into the unlocking position.
  • the rotation of the cylinder 5 automatically resumes and the rollers 61 gradually insert the rear edge 39 of the plate 17P in the slot 29B ( Figure 9).
  • the rotation of the cylinder 5 stops automatically when the rollers 61 are located right of the slot 29B and the roller 57 left is automatically returned to the open position.
  • the left arm 45B is then returned to the extracted position, so that the left section 31 B locks the rear edge 39 of the plate 17P. This is then properly locked and the holding bar 59 can automatically return to the spaced position.
  • the laying of the plate 17P is completed.
  • the operator triggers, for example by pressing a button, the execution of the removal operation under the control of the control unit.
  • the latter automatically causes the rotation of the cylinder 5 to bring the arm 45B left facing the roller 57 left.
  • the rollers 61 are then brought automatically to the support position on the plate 17P and the left roller 57 is automatically brought to the support position on the left arm 45B, thus causing the unlocking of the left section 31B.
  • Because of the elastic nature of the plate 17P its rear edge 39 disengages from the slot 29B but the rest of the plate 17P is held in place on the one hand by the associated blanket cylinder 7 and on the other hand by the rollers 61 (FIG. 10).
  • the left roller 47 is then automatically returned to the support position on the left arm 45A, causing the passage of the left section 31A in the unlocked position.
  • the rear edge 39 of the plate 21 P if it is present on the cylinder 5, is then held in position by the rollers 61. An operator can then remove the front edge 41 of the plate 17P of the slot 29A.
  • the control unit automatically causes the rotation of the cylinder 5 to rotate slightly in a clockwise direction until the rollers 61 are in position. right of the slot 29A.
  • the left roller 47 is then automatically moved to its disengaged position, again causing locking of the left portion 31A of the locking bar 25A.
  • the holding bar 59 is automatically returned to its spaced position. The removal of the plate 17P is then completed.
  • the locking bars 25A and 25B being made of several sections 31A and 31B moving independently of each other, the installation or withdrawal of a plate on the left side can be done without having to ask or remove the mounted plates on the right side of the cylinder 5.
  • the laying or removal of a plate provided on one side of the cylinder 5, for example the plate 17P in the example described above, can be carried out without having an impact on the other plate 21 P climb on the same side.
  • a plate can be changed independently of other plates present on the cylinder 5, which makes it possible to make a change of edition.
  • the removal of a plate can be carried out without damaging it.
  • the locking bars 25A and 25B being made of several sections 31A and 31B, the installation and removal of a plate can also be performed entirely manually, in a simple manner.
  • the laying and the removal are then carried out as previously described for the plate 17P, except that the locking and unlocking of the section 31A and the driving in rotation of the plate cylinder 5 are controlled by the operator.
  • the manual method of changing plates can then be implemented by a single operator.
  • actuators 51 used to move the locking bars 25A and 25B are carried by the frame 11, and not by the plate cylinders 5 themselves.
  • the maintenance of these actuators 51 is facilitated and economical, and the costs of the plate cylinders 5 are reduced.
  • the cylinder is provided with a single locking bar 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
EP06291662A 2005-11-02 2006-10-25 Druckmaschine mit vom Gestell getragenen Plattenverriegelungsvorrichtungen Withdrawn EP1790472A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0511170A FR2892660B1 (fr) 2005-11-02 2005-11-02 Presse d'impression a actionneurs de verrouillage de plaques portes par le bati.
FR0511167 2005-11-02

Publications (2)

Publication Number Publication Date
EP1790472A2 true EP1790472A2 (de) 2007-05-30
EP1790472A3 EP1790472A3 (de) 2008-05-07

Family

ID=37943920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06291662A Withdrawn EP1790472A3 (de) 2005-11-02 2006-10-25 Druckmaschine mit vom Gestell getragenen Plattenverriegelungsvorrichtungen

Country Status (3)

Country Link
US (1) US20070137508A1 (de)
EP (1) EP1790472A3 (de)
JP (1) JP2007125892A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10737481B2 (en) * 2017-07-03 2020-08-11 Manroland Goss Web Systems Gmbh Plate cylinder with plate lockup mechanism and related printing press and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020148373A1 (en) 2000-05-17 2002-10-17 Dumais Mark Bernard Printing press with multi-plate plate cylinder

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1373656A (en) * 1916-01-20 1921-04-05 Scott Isabella Means for attaching printing-plates to cylinders
JPH07378B2 (ja) * 1982-04-29 1995-01-11 株式会社東京機械製作所 輪転印刷機の刷版自動着脱装置
JP3030582B2 (ja) * 1991-09-19 2000-04-10 株式会社小森コーポレーション 輪転印刷機の刷版交換装置
DE4335140C1 (de) * 1993-10-15 1995-02-02 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
JPH08300625A (ja) * 1995-05-02 1996-11-19 Komori Corp 輪転印刷機の版押え装置
DE29600845U1 (de) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE29807377U1 (de) * 1998-04-23 1998-07-16 MAN Roland Druckmaschinen AG, 63075 Offenbach Befestigungsvorrichtung für Platten auf Druckmaschinenzylindern
JP2003205597A (ja) * 2001-11-08 2003-07-22 Mitsubishi Heavy Ind Ltd 印刷機の版締め装置
DE10324330A1 (de) * 2003-05-27 2004-12-30 Man Roland Druckmaschinen Ag Plattenzylinder einer Druckmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020148373A1 (en) 2000-05-17 2002-10-17 Dumais Mark Bernard Printing press with multi-plate plate cylinder

Also Published As

Publication number Publication date
EP1790472A3 (de) 2008-05-07
US20070137508A1 (en) 2007-06-21
JP2007125892A (ja) 2007-05-24

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