EP0100779B1 - Vorrichtung zum Auswechseln von Druckplatten - Google Patents

Vorrichtung zum Auswechseln von Druckplatten Download PDF

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Publication number
EP0100779B1
EP0100779B1 EP19820107256 EP82107256A EP0100779B1 EP 0100779 B1 EP0100779 B1 EP 0100779B1 EP 19820107256 EP19820107256 EP 19820107256 EP 82107256 A EP82107256 A EP 82107256A EP 0100779 B1 EP0100779 B1 EP 0100779B1
Authority
EP
European Patent Office
Prior art keywords
plate
printing
cylinder
fixture
printing cylinder
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.)
Expired
Application number
EP19820107256
Other languages
English (en)
French (fr)
Other versions
EP0100779A1 (de
Inventor
Noriyuki C/O Mahira Mach. Works Hoshino
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to DE1982107256 priority Critical patent/DE100779T1/de
Priority to DE8282107256T priority patent/DE3270412D1/de
Priority to EP19820107256 priority patent/EP0100779B1/de
Publication of EP0100779A1 publication Critical patent/EP0100779A1/de
Application granted granted Critical
Publication of EP0100779B1 publication Critical patent/EP0100779B1/de
Expired 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
    • B41F27/1206—Feeding to or removing from the forme cylinder

Definitions

  • the present invention relates to an automatic printing plate exchange system in a printing machine according to the precharacterizing part of the claim.
  • printing sections in paper working machines are classified into two types of an upper printing type and a lower printing type, however, in many known machines of either type, mounting and dismounting of a plate sheet onto and from a printing cylinder have been carried out entirely through a manual operation, after a space for mounting a plate sheet (3) onto a printing cylinder (4) has been established by separating a printing section (2) and a paper feed section (2a) from a paper eject section (1) as shown in Fig. 1 which illustrates one example of the upper printing system in the prior art. The outline of this working procedure will be explained in the following.
  • US-A-4178 848 discloses an automatic print-- ing plate exchange system according to the precharacterizing part of the claim and makes reference to known machines of this kind.
  • the plate supplying device described in this document comprises a plate storing means for supporting the plates in a stack, whereby said plate storing means has a normally substantially closed opening in its bottom plate through which the plates are to be drawn sequentially. Further, there is provided a swingable suction means for sucking the bottom plate of the stack and transporting it to a conveying means from which the plate is mounted to the printing cylinder.
  • the plate supplying device of this type suffers from disadvantages that frictional damage to the plates may occur when the bottom plate is drawn from the stack. Further, when a plate is conveyed to the printing cylinder, further frictional damage may be caused due to unsatisfactory friction between the rollers provided in said conveying means.
  • a more specific object of the present invention is to provide a printing plate exchange system in which the printing plates can be exchanged without being exposed to any frictional damage and in which a time required for setup can be greatly shortened, hence a productivity is enhanced by the corresponding amount, and thereby labor saving and safety can be improved.
  • FIG. 4 A general construction of one preferred embodiment of the present invention as applied to a printing section of upper printing type, is shown in Fig. 4.
  • the printing plate exchange system illustrated in Fig. 4 is composed of a plate preset apparatus (12) and an automatic plate mount/dismount apparatus (13).
  • a sandwich conveyor (70) is provided for the purpose of conveying a printed paper sheet to a paper eject section.
  • a unit box (15) containing the plate preset apparatus (12) therein has casters (14) attached to four corners of its bottom surface so as to be freely movable.
  • a frame (18) is supported by cam followers (17) and (17') interposed between these upper and lower rails (16) as hanging therefrom.
  • the frame (18) is coupled to a cylinder (19) which is fixedly secured to the unit box (15), and further, on the frame (18) is fixedly secured another cylinder (20).
  • a sprocket wheel (21) provided on a side surface of a one-way clutch (43) mounted on the same shaft as the cam follower (17) is coupled through a chain (22) to another sprocket wheel (21') which is rotatably mounted at a lower portion of the frame (18).
  • sprocket wheels (23) and (23') are rotatably supported on the same shafts as the above-described cam followers (17) and (17'), respectively, at the upper portion of the frame (18), and coupled to each other through a conveyor chain (24).
  • a protrusion (k) which is adapted to fit into a slot (h) formed on the fixture rod (39).
  • a rear fixture strip (7) of a plate sheet (3) is fitted into a slot (g) provided on the fixture rod (39) in parallel to its axis, and is held by claws (45) as not to slip up.
  • a protrusion (i) of a special attachment (44) provided on the conveyor chain (24) is adapted to fit into the slot (h) formed on the fixture rod in parallel to its axis, and as a result, the angular positions of the slots (h) of the fixture rods (39) carried by the conveyor chain (24) as shown in Fig. 4 can be prevented from being displaced as the conveyor chain (24) moves.
  • reference numeral (25) designates a piston rod of the cylinder (20), and this piston rod (25) is coupled to the chain (22) at a point (a) so that the chain can move in response to actuation of the cylinder (20).
  • the plate mount/dismount apparatus (13) is composed of a carrier arm (26), a wheel (27), a link (28), a cylinder (29) and the like, and its detailed structure is illustrated in Figs. 9 and 10.
  • Fig. 10 is a cross-section view taken along line C-C in Fig. 9.
  • a printing cylinder (4) having its shaft carried between frames (47) and (47'), is rotatably supported, and a gear (48) is coupled to one end portion of the shaft.
  • Another gear (49) meshed with the gear (48) is coupled via a clutch (50) to a motor (51), which is fixedly supported from the frame (47) through a base plate (52).
  • a pulse generator (53) for the purpose of detecting an angle of rotation.
  • a slot (54) On the outer circumference of the printing cylinder (4) is provided a slot (54), and at the bottom of the slot (54) is fitted an inner cylinder (55) so as to be rotatable about a point 0 in Fig. 9.
  • an inner cylinder (55) On the inside surface of the inner cylinder (55) are provided recesses at a number of positions aligned in the lengthwise direction, and springs (40) are fitted into the respective recesses.
  • flange portions provided at the opposite end surfaces of the inner cylinder (55) are machined into sector gears (32).
  • a rotary cylinder (37) is mounted in the printing cylinder (4) at such position that a gear (36) mounted on the rotary shaft of the rotary cylinder (37) may mesh with the sector gear (32).
  • Reference numeral (38) designates a cylinder which is fixedly secured onto a side surface of the printing cylinder (4) so that a tip end of a piston rod of the cylinder (38) may butt upon the claw (34). It is to be noted the above-described structure is provided on the both side surfaces of the printing cylinder (4).
  • a receiving roll (30) has its shaft mounted between the frames (47) and (47') in parallel to the printing cylinder (4), and it is rotatably supported via eccentric bushes (56) and (56').
  • the eccentric bushes (56) and (56') are rotatably mounted in the frames (47) and (47'), respectively.
  • a gear (57) is coupled to one end of the shaft of the receiving roll (30), and the gear (57) is in turn meshed with the gear (48).
  • the eccentric bushes (56) and (56') are machined into sector gears (58) and (58'), respectively, and these sector gears (58) and (58') are meshed with pinions (60) and (60'), respectively, provided on a pinion shaft (59) that is pivotably supported between the frames (47) and (47') in parallel to the receiving roll (30).
  • pinion shaft (59) is coupled to a motor (51), which is fixedly secured onto the frame (47') via base plate (62).
  • carrier arms (26) and (26') rotatably mounted on the eccentric bushes (56) and (56'), respectively, are engraved gear teeth along about one-half of its circumference, and gears (27) and (27') are rotatably mounted on the frames (47) and (47'), respectively, at such position that the gears (27) and (27') may mesh with the gear teeth on the eccentric bushes (56) and (56'), respectively.
  • These gears (27) and (27') are connected via a shaft (65) provided in parallel to the pinion shaft (59).
  • the gear (27') provided on the frame (47') has a protrusion (t) on its outer circumference, which protrusion is coupled via a link (28) to the cylinder (29), and the cylinder (29) is in turn fixedly secured onto the frame (47') via a mount seat (63).
  • a plate sheet group consisting of a necessary number of plate sheets (3) are preliminarily suspended from the conveyor chain (24) in the sequence of use thereof outside of the printing machine to preset the unit box (15), and after the thus preset unit box (15) has been fixedly placed within the printing machine, the frame (18) in the unit box (15) is moved up to the position where the rightmost plate sheet (3) is placed at such position that it can be engaged with the carrier arm (26).
  • the plate exchange system according to the present invention under the above-described state, is shown in Fig. 4. This movement of the frame (18) is effected by actuating the cylinder (19) in the direction of retracting its piston rod by operating a push-button switch (not shown).
  • Subsequent sequential advance of the plate sheets (3) is effected in the following manner. That is, if the chain (22) is driven by actuating the cylinder (20) in the direction of projecting its piston rod (25) by operating a push-button switch (not shown), then the sprocket wheel (21) fixed to the one-way clutch (43) is rotated, hence the sprocket wheel (23) mounted on the same shaft as the one-way clutch (43) is also rotated simultaneously so as to drive the conveyor chain (24), for each one stroke of the cylinder (20) the one-way clutch (43) is actuated so as to lock the sprocket (23) and the conveyor chain (24) at the advanced position when the piston rod (25) is retracted.
  • Figs. 11 (a), 11(b) and 11 (c) when the support rod (64) is raised by actuating the cylinder (46) provided on the preset apparatus for the purpose of moving the fixture rod (39) of the plate sheet (3) set on the preset apparatus (12) up to the position where it can be engaged within the carrier arm (26) (the position shown by double-dot chain lines in Fig. 11 (a)), the projection (k) provided at the tip end of the support rod (64) would fit into the slot (h) provided on the fixture rod (39), so that the fixture rod (39) can be moved without changing its angular position while it is being raised.
  • Fig. 11 (a) shows the state where the projection (k) of the support rod (64) has fitted into the slot (h) of the fixture rod (39).
  • Fig. 11(b) shows the state where the support rod (64) has reached its stroke end, the gear (27') has been rotated via the link (28) by actuating the cylinder (29) not shown in Fig. 11, hence the carrier arm (26) has rotated in the direction of an arrow, and a protrusion (1) of the carrier arm (26) has fitted into the slot (h) of a the fixture rod (39).
  • the angular position of the fixture rod (39) relative to the carrier arm (26) can be prevented from deviating.
  • Fig. 11 (c) shows the state where the fixture rod (39) has reached the slot (54) on the printing cylinder (4) which was preliminarily disposed at its standby position as a result of rotation of the carrier arm (26).
  • the support rod (64) which has delivered the fixture rod (39) to the carrier arm (26) is lowered to its standby position (the position shown by solid lines in Fig. 11 (c)) by actuating the cylinder (46).
  • the plate (5) cannot pass through the gap space between the printing roll (4) and the receiving roll (30) shown in Fig. 12(a), hence the receiving roll (30) is lowered from the position shown by double-dot chain lines to the position shown by solid lines in Fig. 12(b) by rotating the eccentric bushes (58) and (58') by actuating the motor (61) shown in_ Fig. 10, and thus the plate sheet (3) can be wrapped around the outer circumference of the printing cylinder (4) as the printing cylinder is rotated.
  • the carrier arm (26) which has delivered the fixture rod (39) onto the printing cylinder (4), is rotated up to the standby position shown in Fig. 12(b) in response to a retracting operation of the cylinder (29) via the link (28) and the gear (27').
  • the receiving roll (30) disposed at the position shown by solid lines in Fig. 12(b) is again raised by the actuation of the motor (61) and eventually reaches the position shown by solid lines in Fig. 12(c).
  • the front fixture strip (6) is fitted into a slot (d) provided on the circumference of the printing cylinder (4).
  • the rotary cylinder (37) is again actuated to rotate the sector gear (32) in the direction of an arrow.
  • the fixture rod (39) is ejected from the slot (54) onto a receiver pan (41) by an urging force of the springs (40) provided on the inside surface of the inner cylinder (55).
  • the motor (51) is again actuated, and as the printing cylinder (4) is rotated in the direction of an arrow, the plate sheet (3) is recovered in the receiver pan (41) (Fig. 13(b)).
  • the slot (54) on the printing cylinder has reached the position shown in Fig. 13(c)
  • the recovery of the plate sheet (3) is completed, hence the motor (51) is stopped and the connection of the clutch (50) is also released.
  • Fig. 14 shows a second preferred embodiment of the present invention, in which unit boxes (15) each containing a plate sheet preset apparatus (12) and an automatic plate mount/dismount apparatus (13) therein are respectively fixed within printing sections (2), (2) disposed in juxtaposition between a paper eject section (1) and a paper feed section (2a).
  • the unit box need not be drawn out of the printing machine, so that a small margin floor area of a factory where the machine is intalled can suffice, also the sandwich conveyor connecting the adjacent units becomes unnecessary, and therefore, a setup time can be reduced and a safety can be improved.
  • the printing plate exchange system according to the present invention is constructed as described above, as compared to the manual operation system in the prior art, it becomes unnecessary to release the frames of the printing section and the paper feed section for the purpose of reserving a space for manual operation each time the plate is to be exchanged, also the plate sheets can be preset, and the automatic mounting and dismounting of a plate sheet onto and from a printing cylinder can be achieved. Therefore, a time required for setup is greatly shortened, hence a productivity can be enchanced by the corresponding amount, and also improvements in saving labor and in safety can be achieved.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)

Claims (1)

  1. Automatische Vorrichtung zum Auswechseln von Druckplatten, umfassend eine Plattenspeichereinrichtung (15) zum Liefern einer Anzahl von (Druck-)Platten (3) zu einem Druckzylinder (4) sowie eine Platten-Anbring/Abnahmeeinrichtung (26, 30, 46, 64) zum Anbringen und Abnehmen einer in der Plattenspeichereinrichtung (15) vorhandenen Platte am bzw. vom Druckzylinder (4), dadurch gekennzeichnet, daß die Plattenspeichereinrichtung eine Kasteneinheit (15) ist, die mehrere, jeweils an einer Aufspannstange (39) montierte (Druck-)Platten (3) enthält, die unter den Druckzylinder (4) bringbar sind, die Aufspannstange (39) eine Schlitz (g) zum Einrasten einer Aufspannleiste (7) der Platte (3) und ein Halteelement (45) zur Verhinderung eines Trennens der Aufspannleiste (7) von ihr aufweist und die Platten-Anbring/Abnahmeeinrichtung (26, 30, 46, 64) die Platte (3) aus der Kasteneinheit (15) anzuheben und sie mit Hilfe der Augspannstange (39) um den Druckzylinder (4) herumzuwickeln vermag.
EP19820107256 1982-08-10 1982-08-10 Vorrichtung zum Auswechseln von Druckplatten Expired EP0100779B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1982107256 DE100779T1 (de) 1982-08-10 1982-08-10 Vorrichtung zum auswechseln von druckplatten.
DE8282107256T DE3270412D1 (en) 1982-08-10 1982-08-10 Printing plate exchange system
EP19820107256 EP0100779B1 (de) 1982-08-10 1982-08-10 Vorrichtung zum Auswechseln von Druckplatten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19820107256 EP0100779B1 (de) 1982-08-10 1982-08-10 Vorrichtung zum Auswechseln von Druckplatten

Publications (2)

Publication Number Publication Date
EP0100779A1 EP0100779A1 (de) 1984-02-22
EP0100779B1 true EP0100779B1 (de) 1986-04-09

Family

ID=8189173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820107256 Expired EP0100779B1 (de) 1982-08-10 1982-08-10 Vorrichtung zum Auswechseln von Druckplatten

Country Status (2)

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EP (1) EP0100779B1 (de)
DE (2) DE3270412D1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0788091B2 (ja) * 1986-11-20 1995-09-27 三菱重工業株式会社 枚葉オフセット印刷機の自動版交換制御装置
DE10052774B4 (de) * 2000-10-25 2004-08-19 Koenig & Bauer Ag Vorrichtung zum Wechseln von Druckplatten auf einem Plattenzylinder einer Druckmaschine
DE10314340B3 (de) * 2003-03-28 2004-08-12 Koenig & Bauer Ag Vorrichtung zum Speichern eines an einem Zylinder einer Druckmaschine auszutauschenden Aufzugs
DE10314342B3 (de) 2003-03-28 2004-08-26 Koenig & Bauer Ag Vorrichtung zum Speichern eines einem Zylinder einer Druckmaschine zuzuführenden Aufzugs und ein Verfahren zum Zuführen eines Aufzugs zu einem Zylinder einer Druckmaschine
DE20321720U1 (de) 2003-03-28 2009-03-12 Koenig & Bauer Aktiengesellschaft Vorrichtung zum Speichern eines an einem Zylinder einer Druckmaschine auszutauschenden Aufzugs
DE10314344B3 (de) * 2003-03-28 2004-08-26 Koenig & Bauer Ag Vorrichtung zum Speichern eines einem Zylinder einer Druckmaschine zuzuführenden Aufzugs
DE10314341B3 (de) * 2003-03-28 2004-08-12 Koenig & Bauer Ag Vorrichtung zum Speichern eines an einem Zylinder einer Druckmaschine auszutauschenden Aufzugs
DE102005039773B4 (de) * 2005-08-22 2011-12-01 Koenig & Bauer Aktiengesellschaft Vorrichtung zum Zuführen oder Abführen eines Aufzugs mit einfacher oder doppelter Länge zu oder von einem Zylinder einer Druckmaschine
DE102006006136A1 (de) 2006-02-10 2007-08-23 Koenig & Bauer Aktiengesellschaft Systeme zur Überprüfung der Bestückung eines Druckformmagazins und ein System zur Zuführung mindestens einer in einem Druckformmagazin gespeicherten Druckform zu einem Zylinder
DE102006032202B3 (de) * 2006-07-12 2007-10-11 Koenig & Bauer Aktiengesellschaft Speichervorrichtung für Druckplatten
DE102006032203A1 (de) * 2006-07-12 2008-01-17 Koenig & Bauer Aktiengesellschaft Zuführvorrichtung zum Zuführen von Druckplatten zu einem Plattenzylinder eines Druckwerks einer Druckmaschine und ein Verfahren zum Zuführen von Druckplatten

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828672A (en) * 1972-10-17 1974-08-13 American Bank Note Co Apparatus for fitting flexible printing plates and rigging to printing press cylinders
JPS5932311B2 (ja) * 1976-06-14 1984-08-08 リヨ−ビ株式会社 オフセツト印刷機等の給版装置

Also Published As

Publication number Publication date
DE3270412D1 (en) 1986-05-15
EP0100779A1 (de) 1984-02-22
DE100779T1 (de) 1984-06-07

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