EP0241663B1 - Dispositif pour convoyer et tourner des feuilles pour machines traitant des feuilles - Google Patents

Dispositif pour convoyer et tourner des feuilles pour machines traitant des feuilles Download PDF

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Publication number
EP0241663B1
EP0241663B1 EP87101907A EP87101907A EP0241663B1 EP 0241663 B1 EP0241663 B1 EP 0241663B1 EP 87101907 A EP87101907 A EP 87101907A EP 87101907 A EP87101907 A EP 87101907A EP 0241663 B1 EP0241663 B1 EP 0241663B1
Authority
EP
European Patent Office
Prior art keywords
belt
conveyer
sheets
machine
conveyor
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
EP87101907A
Other languages
German (de)
English (en)
Other versions
EP0241663A1 (fr
Inventor
Hans-Joachim Jähme
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.)
Neue Rotaprint GmbH
Original Assignee
Neue Rotaprint GmbH
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 Neue Rotaprint GmbH filed Critical Neue Rotaprint GmbH
Priority to AT87101907T priority Critical patent/ATE47122T1/de
Publication of EP0241663A1 publication Critical patent/EP0241663A1/fr
Application granted granted Critical
Publication of EP0241663B1 publication Critical patent/EP0241663B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/003—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/08—Combinations of endless conveyors and grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H15/00—Overturning articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/042—Intermediate conveyors, e.g. transferring devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/085—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers by combinations of endless conveyors and grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4471—Grippers, e.g. moved in paths enclosing an area
    • B65H2301/44712—Grippers, e.g. moved in paths enclosing an area carried by chains or bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4474—Pair of cooperating moving elements as rollers, belts forming nip into which material is transported
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/23—Belts with auxiliary handling means
    • B65H2404/231—Belts with auxiliary handling means pocket or gripper type

Definitions

  • the present invention relates to a sheet conveying and turning device for sheet processing machines for optional operation with or without a turn, preferably for two offset printing machines arranged in tandem.
  • Sheet conveying and turning devices are already known in many variations in the prior art. As a rule, the possibility of turning the sheets can be switched on or off so that the sheets to be processed in any machines can be processed either twice on one side or in succession on both sides, that is to say they can be printed in the case of printing machines.
  • the belt conveyor can advantageously be driven at a substantially lower peripheral speed than the turning device. Since the turning device has to rotate at a peripheral speed which corresponds to the working speed of the machines, it is thereby possible to have the sheets conveyed to the second machine arrive at a much lower speed, which considerably facilitates their processing there. Since the sheets are deposited on the belt conveyor in a shingled form, the total throughput of sheets remains the same.
  • a stop is provided, which is fixed in place and projects into the gap between the conveyor belt devices during turning operation and thus stops the sheets released on the deflection roller. In this way the movement of the sheets to be processed is reversed at a precisely defined point, which contributes to the sheets being fed to the second machine in the same relative position in each case.
  • the two printing machines 3, 5 shown in FIG. 1 arranged one behind the other are ultramodern offset printing machines with automatic film change.
  • Each machine has a film stacking table 2, a film separating device 4 for removing the films from the stacking table, and a film transport and guiding device 6, which starts the new film to be applied to the forme cylinder 8 of the offset printing machine from the separating device 4 through a fixing container 10 and to it Forme cylinder conducts and the previously used film from the forme cylinder into a storage, not shown.
  • a inking and dampening unit 12 acts on the forme cylinder in a known manner and colors the foils on the forme cylinder in a known manner.
  • the sheets to be printed are removed by known means, for example a reciprocating suction roll 14, from a stacking table 16 and fed to the impression cylinder 18, the sheet to be printed being printed as it passes between the impression cylinder and the blanket or offset cylinder 20. From there, the printed sheet in the case of the left machine shown in FIG. 1 is fed to the conveyor and turning device according to the invention, while in the case of the right printing machine shown in FIG. 1, the one-sided double or double-sided printing Sheet is placed on a lowerable table.
  • a reciprocating suction roll 14 from a stacking table 16 and fed to the impression cylinder 18, the sheet to be printed being printed as it passes between the impression cylinder and the blanket or offset cylinder 20. From there, the printed sheet in the case of the left machine shown in FIG. 1 is fed to the conveyor and turning device according to the invention, while in the case of the right printing machine shown in FIG. 1, the one-sided double or double-sided printing Sheet is placed on a lowerable table.
  • the associated washing unit 21 is arranged, with which the printing ink is removed from this cylinder if necessary.
  • the conveyor and turning device (as in Figure 3) is shown in an operating state, which includes a turn of the printed sheets, so that they can be printed on the other, unprinted side in the second machine.
  • an operating state which includes a turn of the printed sheets, so that they can be printed on the other, unprinted side in the second machine.
  • an elongated belt conveyor 26 which consists of a number of endless elastic belts 28 with a high coefficient of friction arranged parallel to one another (and to the plane of the drawing). These belts 28 are guided over two deflection rollers 30 and 32 at the beginning and end of the elongated belt conveyor 26, further support rollers 34 being arranged over the length of this conveyor as required.
  • a support and drive roller is indicated in the middle at 38.
  • the conveyor constructed in this way works very similarly to a conventional conveyor belt, ie the printed sheets 36 deposited on its upper side, which overlap to a greater or lesser extent as required, are conveyed from the first printing press (left) to the second printing press (right) with a speed that depends on the circumstances of the individual case and will still have to be addressed.
  • the conveyor does not have to consist of individual endless belts 28 arranged parallel to one another (for example with a circular cross section), but it is readily conceivable that a coherent wide belt - for example with large holes in it or a network-like structure etc. - is also used .
  • the belt conveyor 26 being able to be driven either centrally at the central support and drive roller 38 via the main motor 39, which simultaneously drives the two printing presses 3, 5 synchronously , or alternatively - as shown - by a separate controllable drive motor 40 which, for example, acts on the deflection roller 32 at the end of the conveyor 26 and only drives the belt conveyor 26, while the main motor 39 drives the turning device 50 and the two printing presses 3, 5.
  • suction chambers 42 are arranged just below the belt conveyor 26, which are subjected to a vacuum by suitable means.
  • These suction chambers 42 have suction openings 44 pointing upwards, that is to say in the direction of the conveyor 26, so that there is a considerable air flow in the direction of the suction chambers, which then results in a more than over the large area of each printed sheet 36 deposited on the conveyor sufficient pressing force of the printed sheets against the conveyor having a significant coefficient of friction or its belts 28 leads.
  • the printed sheets are thus fixed on the conveyor belt or belts of the conveyor and inevitably moved in the direction of the second printing press, where the front edge of each printing sheet finally abuts against a stop 46 serving as the front mark of the second printing press.
  • the printed sheets are also aligned laterally, insofar as this is necessary at all.
  • stop 46 on the second printing press i.e. that is, at its front mark
  • the sheet conveyed is fed in a known manner to the impression cylinder 18 'of the second printing press from a reciprocating suction roll 14'.
  • a test device for example in the form of a reflex head 47, is provided in the area of the abovementioned stop 46 (front mark of the second printing press). On the one hand, it checks the correct entry of the sheets into the machine 5 in terms of time and distance, and on the other hand it controls the activation of the offset cylinder 20 of the machine 5 if a sheet is available at the time of the query.
  • the ratio of the cylinder circumference to the conveyor belt speed determines the size of the overlap or scaling of the sheets lying on the conveyor. Due to the significantly reduced speed on the conveyor belt, the functional reliability of the device increases in a reciprocal ratio.
  • the conveyor 26 is configured in its left half to be pivotable about the central support and drive roller 38, specifically together with the suction chamber (s) 42 located below. It is obvious that kei Only half of the belt conveyor must be pivotable. It could just as well be any fraction of the belt conveyor or even the whole belt conveyor, for example, about the deflection roller 32 on the second machine 5, can be lowered or otherwise adjusted.
  • a further conveyor belt-type device is located immediately above the pivotable (left) part of the belt conveyor 26 described above, which device is referred to below as turning device 50.
  • the axes of the deflecting rollers 52, 54 of this turning device 50 run axially parallel to the deflecting rollers 30, 32, 38 of the belt conveyor 26, the belt (s) 56 of this turning device as well as the belt 28 of the belt conveyor 26 being driven in the clockwise direction, but in the The case of the turning device 50 always only with the peripheral speed that corresponds to the exit speed of the printed sheet from the first printing machine 3 or the same printing speed of the two printing machines 3, 5.
  • the circumferential belts 56 of the turning device are designed as positive-locking toothed belts with openable grippers 58, the latter being fastened to these toothed belts 56 at a distance in the circumferential direction from one another which corresponds to a cylinder revolution of the printing press, which is quite possible is to execute each of the belts of the turning device 50 in the circumferential direction with only one gripper 58.
  • the circumferential length of the band or bands 56 corresponds to the cylinder circumference of the printing press.
  • the belt conveyor 26 and the turning device 50 are jointly lowered or pivoted so far about the central roller 38 of 26 that the printing sheet running out of the first printing machine 3 leads straight to the beginning of the upper run of the turning device 50 in such a way that the leading edge of the printing sheet is placed under the gripper 58 of the turning device which closes at this point.
  • the turning device runs at a peripheral speed which corresponds exactly to the output speed of the printing sheet from the first printing machine 3, so that the entire sheet is pulled out of the printing machine and - without the gripper 58 opening - is guided around the deflection roller 54 of the turning device.
  • the upper side of the printing sheet running out of the printing press is turned downward, since the printed side of the printing sheet points downward, ie towards the conveyor 26, after reaching the lower run of the turning device (in FIG. 3).
  • this gripper opens and releases the leading edge of the printing sheet, which now presses the previously generated print image onto the lower, i.e. the side facing the conveyor 26.
  • the front edge of the thus released, turned printing sheet then runs against a stop 51 at the end of the gap, which is held by the upper run of the belt conveyor 26 and the lower run of the turning device 50.
  • the stop 51 is arranged on the first printing machine 3 on a crossbar. As can be seen from a comparison of FIGS. 1 and 2, the stop 51 engages in the gap 35 between the lower and upper run of the turning device 50 or belt conveyor 26 when the turning and conveying device 50/26 according to FIG. 3 is pivoted downward , so that the sheets released by the gripper 58 are stopped in their movement and after sinking onto the belt conveyor 26 in the opposite direction, ie are conveyed to the second printing machine 5.
  • FIG. 4 shows only the left end in FIGS. 1-3 and part of the further band course of this turning device.
  • two toothed belts (band 56) which are arranged next to one another parallel to the plane of the drawing are tensioned with the aid of two deflection rollers / gearwheels, of which only one deflection roller 52 is shown in FIG. 4 with part of the band 56.
  • the belts 56 of the turning device 50 are toothed belts and the associated deflection rollers 52/54 are ent speaking gears.
  • the toothed belt 56 has a centrally arranged recess at certain points along its longitudinal extent, into which the gripper mechanism of the gripper 58 can be releasably inserted.
  • the gripper mechanism has an approximately T-shaped support body 60 which is provided with a central recess and consists of a support plate 62 arranged on the upper side of the toothed belt 56 and two central parts 64 extending perpendicularly thereto, which receive the gripper 58 between them, which is shown in FIG some distance from the support plate 62 or the toothed belt 56 is penetrated by a hinge pin 66 which is supported in the two middle parts 64.
  • the hook-shaped gripper 58 can thus be pivoted about the hinge pin 66 and the hook-shaped end of the gripper 58 which rises above the support plate 62 above the top of the toothed belt 56 lies in the gripping position on the continuous part 63 of the support plate 62.
  • a compression spring 68 is stretched between the support plate 62, 63 and a cam lever-like extension 70 of the hook-shaped gripper 58.
  • the gripper 58 is normally pivoted into its clamping or gripping position, which it assumes in the entire course of the upper and lower run of the deflection device and when walking around the deflection roller 54. Only when the gripper mechanism moves around the deflection roller / gear 52 does the gripper, as shown in FIG. 4, assume the open position, in that the cam-like extension 70 on the middle part (which is larger than the deflection roller 54) 72 accumulates.
  • both the deflecting roller 54 and the deflecting roller 52 have a groove-like recess in their central planes which corresponds approximately to the width of the lower part of the gripping mechanism (FIG. 5), but the groove-shaped recess in the deflecting roller 52 is less deep than at the deflection roller 54, so that the gripper mechanism does not open in the latter.
  • the depth of the recess in the deflecting roller 54 is indicated by dashed lines in FIG. 4.
  • the gripping mechanism is easily detachably fastened to the toothed belt 56 by two locking pins 74 inserted through it. After removing these fastening pins 74, the gripper mechanism in FIG. 5 can simply be lifted up out of the recess in the toothed belt 56.
  • These pins 75 are provided with a section of reduced diameter in the middle for better locking on the central parts 64 of the T-shaped support body 60, as can be clearly seen in FIG.
  • a gripping mechanism is shown which is just beginning to leave the deflection roller 52 and thus initiates the closing process of the gripper 58.
  • the path of the printing sheet emerging from the first printing press 3 is indicated by an arrow 59.
  • the printing sheet hits the plate 62/63 on the upper run of the toothed belt 56 at an acute angle. This allows any undulations on the front edge of the printing sheet to be compensated for, since the sheet thus aligns itself on the plate 62/63.
  • the sheet to be clamped is fed onto the toothed belt 56 or the support plate 62, 63 at such a speed that the differential speed is zero or approximately zero. Since the hinge pin 66 lies in the direction of movement of the toothed belt 56 in front of and below (in FIG. 4) the point of impact of the arch on the support plate 62, 63, the hook-shaped end of the gripper 58 protruding upward above the toothed belt 56 moves relative to the toothed belt 56 when it is closed backwards, ie against the direction of movement of the toothed belt, so that a secure clamping of the front edge of the printing sheet arriving from the first printing press is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Discharge By Other Means (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Jib Cranes (AREA)

Claims (7)

1. Dispositif pour convoyer et tourner des feuilles pour machines traitant des feuilles, fonctionnant au choix avec ou sans retournement, préférablement pour deux machines offset disposées en tandem, caractérisé en ce que deux installations à courroie de transport parallèles sont disposées l'une au-dessus de l'autre (moyen de retournement 50, convoyeur à courroie 26), dont les brins adjacents forment une fente (35), dans laquelle les feuilles peuvent être transportées par le convoyeur à courroie (26) d'une machine (3), dans la direction de l'autre machine (5), en ce que sur la courroie/les courroies (56) du moyen de retournement (50) sont disposés des preneurs de feuilles (58), se fermant dans la zone du brin opposé au convoyeur à courroie (26) et s'ouvrant dans la zone du brin dirigé vers le convoyeur à courroie (26), et en ce que les deux installations à courroie de transport (50, 26) sont réglables en commun, de façon à introduire les feuilles sortant de la première machine (3) (jeu de rouleaux de sortie 24) soit au-dessous des preneurs (58) du brin du moyen de retournement (50) opposé au convoyeur à courroie (26) soit sur le brin du convoyeur à courroie (26) dirigé vers le moyen de retournement (50).
2. Dispositif suivant la revendication 1, caractérisé en ce que le convoyeur à courroie (26) peut être entraîné à une vitesse considérablement plus basse que le moyen de retournement (50).
3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que le convoyeur à courroie (26) peut être chargé d'air d'aspiration par l'intermédiaire de chambres d'aspiration (42) du côté opposé au moyen de retournement (50).
4. Dispositif suivant une des revendications précédentes, caractérisé en ce que les preneurs (58) disposés sur la courroie/les courroies (56) du moyen de retournement (50) sont ouverts resp. fermés en s'engageant sur resp. en descendant de la poulie de renvoi (52) dirigé vers la première machine (3).
5. Dispositif suivant une des revendications précédentes, caractérisé en ce que dans la zone de la poulie de renvoi (52) il est prévu une butée (51) fixe, entrant, lors du fonctionnement à retournement, dans la fente (35) et arrêtant les feuilles relâchées auprès de la poulie de renvoi (52).
6. Dispositif suivant une des revendications précédentes, caractérisé en ce que les deux installations à courroie de transport peuvent pivoter autour du galet (32) disposé sur la seconde machine (5) ou autour d'un des galets (38) du convoyeur à courroie (26).
7. Dispositif suivant une des revendications précédentes, caractérisé en ce que la première installation à courroie de transport (moyen de retournement 50) présente une longueur constituant une fraction de la seconde installation à courroie de transport (convoyeur à courroie 26).
EP87101907A 1986-02-20 1987-02-11 Dispositif pour convoyer et tourner des feuilles pour machines traitant des feuilles Expired EP0241663B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101907T ATE47122T1 (de) 1986-02-20 1987-02-11 Bogenfoerder- und wendevorrichtung fuer bogenverarbeitende maschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3605535 1986-02-20
DE19863605535 DE3605535A1 (de) 1986-02-20 1986-02-20 Bogen-foerder- und wendevorrichtung fuer bogenverarbeitende maschinen, vorzugsweise fuer zwei in tandemanordnung angeordnete offset-druckmaschinen

Publications (2)

Publication Number Publication Date
EP0241663A1 EP0241663A1 (fr) 1987-10-21
EP0241663B1 true EP0241663B1 (fr) 1989-10-11

Family

ID=6294583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101907A Expired EP0241663B1 (fr) 1986-02-20 1987-02-11 Dispositif pour convoyer et tourner des feuilles pour machines traitant des feuilles

Country Status (6)

Country Link
US (1) US4792132A (fr)
EP (1) EP0241663B1 (fr)
JP (1) JPS62255351A (fr)
AT (1) ATE47122T1 (fr)
DE (2) DE3605535A1 (fr)
ES (1) ES2011461B3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6103985A (en) * 1997-08-04 2000-08-15 Unisys Corporation Turn around loop apparatus for document scanning/processing
JPH11207927A (ja) * 1997-11-05 1999-08-03 Heidelberger Druckmas Ag 枚葉紙輪転印刷機のためのリニア駆動装置を有する反転装置
DE19859535A1 (de) 1998-12-22 2000-06-29 Giesecke & Devrient Gmbh Vorrichtung zum Wenden von Blattgut
US6129350A (en) * 1999-03-10 2000-10-10 Heidelberger Druckmaschinen Ag Timing belt with product handling mechanism
DE10113006B4 (de) * 2001-03-17 2006-04-13 Eastman Kodak Co. Vorrichtung zum Wenden von Bogen für eine Druckmaschine
GB0604324D0 (en) * 2006-03-06 2006-04-12 Baron Raymond P Conveyer apparatus and manufacturing apparatus incorporating the same
DE102008051095B4 (de) * 2008-10-09 2019-10-10 Heidelberger Druckmaschinen Ag Bogendruckmaschine mit einer Reihenanordnung von Druckwerken
CN104760841A (zh) * 2015-03-26 2015-07-08 天津长荣印刷设备股份有限公司 一种上纸装置及其工作方法
JP6611941B2 (ja) * 2015-12-09 2019-11-27 ヒューレット−パッカード デベロップメント カンパニー エル．ピー． プラークランプを用いる媒体位置合わせ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE618260C (de) * 1931-04-21 1935-09-07 Albert Schnellpressen Druckmaschine fuer Bogendruck mit mehreren hintereinanderliegenden, unter sich gleichen und gleichsinnig laufenden Druckwerken zum Herstellen von Mehrfarbendruck und Schoen- und Widerdruck in einem Arbeitsgange
DE968861C (de) * 1950-10-14 1958-04-03 Johannisberg G M B H Maschf Bogenablegevorrichtung fuer Haltzylinderschnellpressen
DE1146449B (de) * 1960-08-19 1963-03-28 Telefunken Patent Einrichtung zur Bewegungsumkehr von rechteckigem flachem Foerdergut
US3946669A (en) * 1972-05-30 1976-03-30 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Austrustungen Printing arrangement alternatively operated for one-side printing and two-side printing with control system therefor
JPS536715Y2 (fr) * 1974-09-30 1978-02-20
US3968960A (en) * 1974-12-11 1976-07-13 International Business Machines Corporation Sheet inverting and stacking apparatus
DE2523662C3 (de) * 1975-05-28 1981-12-17 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Offstet-Bogen-Rotationsdruckmaschine für Schön- und Widerdruck
JPS5723397U (fr) * 1980-07-14 1982-02-06
DE3115925C1 (de) * 1981-04-22 1982-12-16 O. Dörries GmbH, 5160 Düren Verfahren und Vorrichtung zum Ablegen von Boegen
US4669715A (en) * 1984-12-08 1987-06-02 Heidelberger Druckmaschinen Ag Sheet turning device for small offset printing machines or printing units
US4569284A (en) * 1985-03-21 1986-02-11 Am International Sheet handling mechanism for duplicating machine with duplexing capability

Also Published As

Publication number Publication date
JPS62255351A (ja) 1987-11-07
US4792132A (en) 1988-12-20
EP0241663A1 (fr) 1987-10-21
ES2011461B3 (es) 1990-01-16
ATE47122T1 (de) 1989-10-15
DE3605535A1 (de) 1987-08-27
DE3760734D1 (en) 1989-11-16

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