EP0018291B1 - Machine d'impression avec possibilité de changement de format - Google Patents

Machine d'impression avec possibilité de changement de format Download PDF

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Publication number
EP0018291B1
EP0018291B1 EP80400528A EP80400528A EP0018291B1 EP 0018291 B1 EP0018291 B1 EP 0018291B1 EP 80400528 A EP80400528 A EP 80400528A EP 80400528 A EP80400528 A EP 80400528A EP 0018291 B1 EP0018291 B1 EP 0018291B1
Authority
EP
European Patent Office
Prior art keywords
printing
speed
web
contact
sheet
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
EP80400528A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0018291A1 (fr
Inventor
Eric Tison
Paul Herve
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.)
ETS DESTOUCHE
CODIMAG
Original Assignee
ETS DESTOUCHE
CODIMAG
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 ETS DESTOUCHE, CODIMAG filed Critical ETS DESTOUCHE
Priority to AT80400528T priority Critical patent/ATE3763T1/de
Publication of EP0018291A1 publication Critical patent/EP0018291A1/fr
Application granted granted Critical
Publication of EP0018291B1 publication Critical patent/EP0018291B1/fr
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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/04—Conveying or guiding webs through presses or machines intermittently

Definitions

  • the invention relates to a printing machine with a rotary printing cylinder for printing a web with the possibility of changing the format, that is to say the length of the web which runs at each cycle.
  • a printing machine which comprises downstream of the printing cylinder an endless tractor with pins to drive the web forwards at a call speed at most equal to printing speed and, upstream of the cylinder printing, a device for returning the web backwards to absorb during each printing cycle the excess length provided by the printing speed drive compared to the calling speed drive.
  • the publication FR-A-2 025 390 describes such a printing machine in which said tractor with pins is rotated by a predetermined angle during each period of driving the web forwards and is fixed during each period in which the web is released by the printing torque.
  • the present invention aims to provide a printing machine for changing the format while avoiding inertia due to the fact that the tractor must alternately be driven and stopped or due to the fact that there is a mechanical connection between the tractor and the device. reminder.
  • the tractor with spikes is freely rotating, that the machine comprises a rotor permanently driven at the call speed and which drives the tractor with spikes by contact with a stop said rotor with a stop of the tractor, and that the machine comprises another rotary member downstream of the printing cylinder to drive the web at the printing speed in synchronism with the printing contact.
  • the invention applies to all printing processes (letterpress, dry offset, wet offset, heliographic) and it allows the use of sheet paper of a wide variety of grammages and quality.
  • Figures 1 to 6 show different phases of a printing cycle.
  • the device shown in Figures 1 to 6 comprises a printing machine 1 shown schematically by a printing cylinder 2 having a printing surface 3 which is assumed for example to cover three quarters of the surface of the cylinder and by a back pressure cylinder 17.
  • a printing machine 1 shown schematically by a printing cylinder 2 having a printing surface 3 which is assumed for example to cover three quarters of the surface of the cylinder and by a back pressure cylinder 17.
  • the other accessories of the printing device have not been shown.
  • the printing cylinder acts on the web 4 when there is contact between this web and the printing surface, due to the pinching of the web between the printing surface 3 and a counterpart surface 18 of the cylinder. 17.
  • the device shown comprises, downstream of the printing machine, in the direction of travel of the web shown by arrow 5, a device 6 for pulling the web in the direction of arrow 5 at a speed equal to the speed d printing and a device 7 for pulling the sheet in the direction of arrow 5 at a calling speed.
  • the device also comprises, upstream of the machine 1, a return device 8 for returning the sheet in the opposite direction to the normal direction of travel 5.
  • the device 6 is designed to drive the web in synchronism with the printing, that is to say that the start and the end of this training coincide with the start and the end of the printing and that the driving speed coincides with the tangential speed of the printing cylinder, speed which has been called "printing speed”.
  • the device 6 is constituted for example by a cam whose surface has the same shape and the same angular extent as the printing surface, this cam being driven in rotation at the same speed as the printing cylinder, the angular positions of this cam and the printing surface being identical to obtain the desired coincidences of the contacts with the web.
  • this cam is shown diagrammatically by a sector 9 of a circle.
  • the device 7 is designed to drive the web at a chosen speed, called the "calling speed" which is at most equal to the printing speed.
  • This device comprises, in a preferred embodiment, a crown 10 provided with pins capable of meshing in staggered perforations along the ply (for example so-called “Caroll” perforations) this crown being mounted idle coaxially with a rotor 12 which is continuously rotating at the call speed and which is provided with a stop 13 capable of coming into contact with a stop 14 of the crown in order to drive the latter at the call speed.
  • cam 9 and the pin ring 10 are located opposite as shown, but in alternative embodiments, they are offset, the cam being downstream of the ring.
  • the device 8 is designed to permanently exert a certain tension on the web and to recall the web 4 backwards after each printing, when this is necessary, that is to say if the printing speed is greater than the call speed.
  • This device 8 comprises a rotor 16 with peripheral balls 19 and a rotor 20 with cam 21 cooperating.
  • the ply is normally tensioned by friction between the balls 19 and the surface of the rotor 20 but when the cam 21 which is projecting passes in contact with the ply, the friction becomes sufficient to exert a backward return on the sheet.
  • the cam 21 is synchronized with the printing surface so that the start of the return contact of the web by this cam coincides with the end of the print contact of the printing surface 2 with the web.
  • FIG. 2 shows the start of the cycle.
  • the tablecloth is free except that it is engaged with the pin ring 10 whose stop 14 is driven by the stop 13 of the rotor 12 at the call speed: the tablecloth therefore advances at this speed in the direction of arrow 5, the return by the cam 21 having ended.
  • the next phase is a printing phase during which the printing surface is in printing contact with the web and during which the web is pulled forward by the cam 9.
  • This pulling takes place at a higher speed. at the call speed, it is no longer the spike crown which can drive the ply, but on the contrary it is the ply which imposes its speed which is then the printing speed on the spike crown whose stop 14 takes the lead with respect to the stop 13 of the rotor 12 which rotates at the call speed lower than the printing speed:
  • FIG. 4 diagrams this phase and it can be seen there that there is an angular difference between the stops 13 and 14.
  • the rotor 12 can again drive the web at the call speed through the pivot crown, until the printing surface is in contact with the web while the second cycle has already started.
  • Figure 1 the diagram of the control of the various rotary members from a common power take-off.
  • a gear (not shown) between the cylinders 2 and 17 so that they rotate in opposite directions.
  • the printing cylinder is a driving cylinder which rotates in the direction of arrow 22
  • drive connections are made between this cylinder and the rotors 9 and 20 so that the cams 9 and 21 rotate as the engine cylinder.
  • the counterpressure cylinder 17 rotates in the opposite direction 23 and a drive link is established comprising a pinion 21 between the cylinder 17 and the rotor 12 so that the rotor rotates in the same direction as the cylinder 17 but with a speed which depends on the choice of pinion.
  • the drive links are shown diagrammatically by broken lines.
  • the variation of the paper format is obtained by changing a control gear controlling the call of the paper, in this case the tractor with pins 10.
  • FIG. 6 represents a case of reduction of the format.
  • the contact time in the cycle will be reduced to approach the print format (this can also be different from the format of the print),
  • Example: the height of the print can be equal or lower at the height of the format 1, 2, 3,4, 5, 6, ... inches for a 10 inch paper format.
  • the adjustment of the counterpart with respect to the upper part limits the loop of the paper downstream and thereby reduces the length of paper to be caught up during free time. Furthermore; it increases the free time per cycle, which compensates for the growth in minus - plus, plus - minus differences in speed, when the format decreases while leaving a longer catch-up time.
  • the opening in the cylinders 2 and 17 is calculated so that their respective adjustment can pass from the maximum contact surface to a minimum contact surface of half the maximum contact.
  • the variation in format corresponds to the choice of the gearbox module which controls the advance of the paper. If a tooth of the format pinion corresponds to 1/6 of an inch, the variation of format may take place every 1/6 of an inch.
  • the adjustments make it possible to reduce or increase the contact surface of the web and therefore make it possible to maintain a practically constant backward flow of the paper web.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Labeling Devices (AREA)
  • Record Information Processing For Printing (AREA)
EP80400528A 1979-04-18 1980-04-18 Machine d'impression avec possibilité de changement de format Expired EP0018291B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400528T ATE3763T1 (de) 1979-04-18 1980-04-18 Auf unterschiedliche formate einstellbare druckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7909719A FR2454369A1 (fr) 1979-04-18 1979-04-18 Procede et dispositif pour commander le defilement d'une nappe dans une machine d'impression
FR7909719 1979-04-18

Publications (2)

Publication Number Publication Date
EP0018291A1 EP0018291A1 (fr) 1980-10-29
EP0018291B1 true EP0018291B1 (fr) 1983-06-15

Family

ID=9224414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400528A Expired EP0018291B1 (fr) 1979-04-18 1980-04-18 Machine d'impression avec possibilité de changement de format

Country Status (7)

Country Link
US (1) US4372206A (enrdf_load_stackoverflow)
EP (1) EP0018291B1 (enrdf_load_stackoverflow)
JP (1) JPS56500561A (enrdf_load_stackoverflow)
AT (1) ATE3763T1 (enrdf_load_stackoverflow)
DE (1) DE3063745D1 (enrdf_load_stackoverflow)
FR (1) FR2454369A1 (enrdf_load_stackoverflow)
WO (1) WO1980002258A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10311219A1 (de) * 2003-03-14 2004-09-30 Werner Kammann Maschinenfabrik Gmbh Verfahren und Vorrichtung zum Bedrucken einer Bahn

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561175B1 (fr) * 1984-03-15 1986-10-24 Codimag Procede et dispositif d'impression a grand rendement
US4839814A (en) * 1985-01-29 1989-06-13 Moore Business Forms, Inc. Size independent modular web processing line and modules
US4716802A (en) * 1986-01-20 1988-01-05 Corfine Inc. Scrap reduction system for rotary die cutter
US4751879A (en) * 1987-03-18 1988-06-21 Van Pelt Equipment Corporation Method and apparatus for intermittently processing successive definite lengths of a continuous flexible web
US5115737A (en) * 1990-04-16 1992-05-26 Philip Morris Incorporated Hot rotary stamper apparatus and methods for metal leaf stamping
ES2049143B1 (es) * 1991-11-04 1997-11-16 Cremades Martinez Francisco Sistema y maquina de impresion multiple en continuo.
EP0649740B1 (de) * 1993-09-17 1998-07-08 De La Rue Giori S.A. Druckwerk für eine Rollendruckmaschine
US5417360A (en) * 1993-09-28 1995-05-23 Moore Business Forms, Inc. Feeding of offset, collated forms
US7926688B2 (en) * 2005-08-23 2011-04-19 Durst Phototechnik Ag Tension-controlled web processing machine and method
CN105015156B (zh) * 2015-07-22 2018-06-26 河北海贺胜利印刷机械集团有限公司 间歇式正向跳步印刷机及其控制方法和跳步牵引装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039236A (en) * 1935-01-02 1936-04-28 Meisel Press Mfg Company All size rotary web press
US2845021A (en) * 1955-03-28 1958-07-29 Bemis Bro Bag Co Web feed means for rotary printing press
US3420158A (en) * 1967-01-31 1969-01-07 Signode Corp Strap feed and tensioning mechanism
US3548747A (en) * 1968-12-05 1970-12-22 American Bank Note Co Web-fed rotary printing press
US3762322A (en) * 1972-05-04 1973-10-02 G Vines Printing machine
FR2342849A2 (fr) * 1976-03-05 1977-09-30 Seailles Tison Atel Const Meca Dispositif a differentiel pour commander le defilement d'une nappe a imprimer dans une machine d'impression rotative

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10311219A1 (de) * 2003-03-14 2004-09-30 Werner Kammann Maschinenfabrik Gmbh Verfahren und Vorrichtung zum Bedrucken einer Bahn

Also Published As

Publication number Publication date
WO1980002258A1 (fr) 1980-10-30
US4372206A (en) 1983-02-08
EP0018291A1 (fr) 1980-10-29
FR2454369A1 (fr) 1980-11-14
ATE3763T1 (de) 1983-06-15
JPS56500561A (enrdf_load_stackoverflow) 1981-04-30
DE3063745D1 (en) 1983-07-21

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