EP0156326B1 - Plieuse à feuilles - Google Patents

Plieuse à feuilles Download PDF

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Publication number
EP0156326B1
EP0156326B1 EP85103397A EP85103397A EP0156326B1 EP 0156326 B1 EP0156326 B1 EP 0156326B1 EP 85103397 A EP85103397 A EP 85103397A EP 85103397 A EP85103397 A EP 85103397A EP 0156326 B1 EP0156326 B1 EP 0156326B1
Authority
EP
European Patent Office
Prior art keywords
folding
sheet
length
fold
folds
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
EP85103397A
Other languages
German (de)
English (en)
Other versions
EP0156326A2 (fr
EP0156326A3 (en
Inventor
Heinz Isermann
Werner Leis
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.)
Meteor Siegen Apparatebau Paul Schmeck GmbH
Original Assignee
Meteor Siegen Apparatebau Paul Schmeck 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 Meteor Siegen Apparatebau Paul Schmeck GmbH filed Critical Meteor Siegen Apparatebau Paul Schmeck GmbH
Publication of EP0156326A2 publication Critical patent/EP0156326A2/fr
Publication of EP0156326A3 publication Critical patent/EP0156326A3/de
Application granted granted Critical
Publication of EP0156326B1 publication Critical patent/EP0156326B1/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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/20—Zig-zag folders

Definitions

  • the invention relates to a folding machine for folding sheets (drawing pauses or the like) and to a control of such a folding machine.
  • Folding machines for folding drawing pauses are known, in particular according to a standard-compliant folding program with normal folds and possibly compensating folds, which has a folding mechanism, before the inlet of which transport rollers for inserting the sheet and in front of it - in each case in the sheet advance direction - at least one sensor for sensing its trailing edge is arranged, and also one Have pulse generator and counter for sheet length measurement and finally a control circuit linking the folding mechanism, the sensor and the pulse generator / counter for determining and executing the folding program, for example from DE-A-21 20 204 and 23 17 950.
  • the length measurement is carried out in these known Machines with the help of an "external classification", i. H.
  • the pulse generator is connected to a measuring roller which runs slip-free on the sheet during operation, and in the sheet feed direction the trailing edge sensor is arranged in front of the measuring roller at a distance from the inlet which is at least as long as the length of the arc section which is required for the folding sections which, including compensating folds, connect to a full-width folding section on the leading edge side.
  • the measuring roller not only supplies length measurements within a classification level (e.g. within a certain folding scheme) via the pulse generator, but also carries out the classification itself, for example by selecting one of several folding schemes the control circuit enables.
  • the control circuit can then determine the total length of the sheet as the sum of the pulse count and the distance between the front and rear edge sensors. However, it is also possible to have the control circuit determine a remaining length, for example the length of the arc section available for compensating folds, with the aid of the pulse count between the actuation of the trailing edge sensor and the subsequent folding in the folding mechanism.
  • the control according to the invention of a folding machine assumes that a sheet to be folded multiple times is inserted into the folding machine and is placed in successive zigzag folds with the aid of a folding mechanism according to a predetermined folding scheme, the folding scheme being the maximum Length of the sheet sections lying between two folds and the fixed length of a cover sheet section adjoining the last fold, but a length measurement on the sheet determines the length of any necessary compensation folding sections in front of the cover sheet section.
  • Folding schemes of the type mentioned above provide, for example, DIN 824 for drawing breaks. Depending on the length of the sheet, (longitudinal) folds are then attached at equal distances from one another after a slightly wider section of the sheet enclosing the filing margin.
  • the arch section adjoining the last fold should also have the same length (width) and complete the folding package as a cover sheet because it regularly contains the text field of the drawing. This also requires that that last fold lies on the binding margin side of the folding package - that is to say "on the leading edge side"; the above-mentioned cover sheet closes with the trailing edge of the sheet.
  • the invention further provides that, depending on a measurement of the remaining sheet length carried out shortly after formation of the third-last fold, the position of the penultimate fold and thus the length of the last compensation folding section in front of the cover sheet section are determined and the folding mechanism is controlled accordingly.
  • the position of the penultimate fold and thus the length of the last compensation folding section in front of the cover sheet section are determined and the folding mechanism is controlled accordingly.
  • the invention provides that, depending on a measurement of the remaining sheet length at a distance from the sheet end (trailing edge) which is at most equal to the sum of the lengths of two sheet sections of maximum length, the cover sheet section and two equalizing folding sections of the greatest necessary length, the type and number of folds required up to the last fold (cover sheet section) are determined and the folds are then formed up to the third last fold at predetermined length points of the sheet.
  • the first equalizing double fold will be made first formed with arc sections of a predetermined length (width). It is therefore not taken into account how large the two arch sections of the other equalizing double fold must be made; however, it is expedient to "keep ready" several predetermined lengths for the first compensating double fold, which are called up depending on the individual case dimensions.
  • the control of the folding machine is further simplified because the (only) individual folding position determination, which is based on the individual case, only needs to be carried out after the third last fold; all other folding distances are fixed (possibly with the aforementioned alternative) for all sheets to be folded regardless of their actual size.
  • the folding machine shown schematically in FIG. 1 has a folding roller frame 1 (outlined with dashed lines) with reversing folding rollers 2, 3 and a correspondingly reversing group of adjacent belts 4 that work with the folding rollers 2, 3 and are guided over drive and deflection rollers 5.
  • a folding roller frame 1 (outlined with dashed lines) with reversing folding rollers 2, 3 and a correspondingly reversing group of adjacent belts 4 that work with the folding rollers 2, 3 and are guided over drive and deflection rollers 5.
  • the folding rollers 2, 3 form with the belts 4 folding nips 6, 7.
  • the folding roller mill 1 is controlled so that the front edge 8 of a sheet 10 entering through the inlet 9 is always first led into the folding nip 6 (the folding roller 2). in the In the area of this folding gap 6 - slightly behind it in the direction of entry - a sensor 23 is arranged, which detects the leading edge 8 of the sheet 10 entering the folding gap 6; this will still be discussed.
  • the sheet 10 deflecting and interacting transport rollers 11, 12 are arranged. Again in the feed direction of the sheet 10 in front of the transport rollers 11, 12, a measuring device designated as a whole is provided. It has the measuring roller 15 mounted at the free end of a lever 14, which is set against the direction of advance of the sheet 10 (arrow 16) at the angle a. It works together with a counter roller 17 which, in a manner not shown, projects through an opening in the table (also not shown) over which the sheet 10 runs in the area of the measuring device 13.
  • the measuring roller 15 acts on a pulse generator 18; this consists of a disc 19 with edge markings, which receives a scanner 20.
  • the pulses generated in this way are summed in a counter 21, and the sum of the pulse signals represents a measure of the length of the sheet 10 taken up by the measuring roller 15.
  • the above-described design and arrangement of the measuring roller 15 in the context of the measuring device 13 has proven to be expedient in view of the necessity for the measuring rollers to slip without slippage despite constantly changing feed speeds of the sheet 10 (caused by the type of fold formation with the aid of reversing folding rollers) Let the sheet run off.
  • the front edge 8 of the sheet 10 after it has been guided between the transport rollers 11, 12 and the inlet 9, approaches the surface of the belts 4, which - driven synchronously with the folding rollers 2, 3 - in the direction of the arrow 22 move (the arrangement is a mirror image of that in Figure 1).
  • the sheet 10 usually has a swirl in the region of the front edge 8, which is indicated in FIG. 2A by the curvature of an edge section of the sheet under the front edge 8. However, it must be ensured that the sheet is stretched smoothly into the folding gap between the folding roller 3 and the belt 4.
  • FIG. 2B shows the moment at which the sheet 10 has already been advanced so far through the folding nip that the folding roller mill 1 can be stopped, so that the continued advancement of the sheet 1 leads to a bulging of the sheet 10 between the folding rollers 2, 3 .
  • Figure 3 illustrates this course of the speed.
  • the reduction in speed prevents a leading edge which is not exactly perpendicular to the direction of advance of the sheet 10 and which can also be formed by an oblique fold previously made in accordance with DIN 824, from leading to a lateral warping of the sheet in the folding nip, because the higher peripheral speed of the folding roller 2 and Belt 4 first captured the bow on one side only.
  • the peripheral speed of the folding roller mill 1 over the distance L 2 is increased again to the original value, which must be maintained during the entire further folding process in order to do this to ensure proper wrinkles.
  • the sheet 10 is given the above-mentioned changing feed speed (because of the reversing interruptions), which the transport rollers 11, 12 allow with friction slip.
  • FIG. 1 schematically illustrates (with arrows directed vertically against the path of the sheet 10), in addition to the sensor 23, also a sensor 24 which detects the rear edge 26 (FIG. 4) of the sheet 10 and a sensor 25 which detects the front edge 8 of the sheet 10 of the total length of a sheet 10, the sensor 25 starts the pulse generator 18 when it passes the front edge 8 of the sheet. If the trailing edge 26 of the sheet 10 passes over the sensor 24, the pulse count in the counter 21 is stopped, and the total length of the sheet 10 results from the sum of the counted pulses and the distance between the sensors 24, 25.
  • the measurement of the total length can be dispensed with, especially for longer sheets Remaining length measurement can be made. If the folding roller mill already produces folds on a sheet 10 before the rear edge 26 of the sheet 10 has passed the sensor 24, the signaling by the sensor 25 is not required; The reversing of the folding roller mill 1 adjacent to the actuation of the sensor 24 can then serve as the reference signal.
  • the pulse generator 18 is only started with the counter 21 when the rear edge 26 passes the sensor 24, and the counting is stopped when the position of the folding roller mill 1 (more precisely: the folding roller mill is stopped before it is driven again in the opposite direction) of the last fold formed:
  • the remaining length of the sheet is given as the path distance between this fold and the sensor 24, minus the content of the counter 21. From this remaining length, both the required folding scheme and the folding program (which also contains the individual spacing lengths between the folds) can then be determined in the control circuit (not shown) and can then be executed by the latter by appropriate control of the folding roller chair 1.
  • the position of the fold 29 previously determined by the folding program is checked on the basis of the contents of the counter 21 then present, and - if it turns out, that their retention would lead to an incorrect length and / or position of the cover sheet 27 - corrected so that a correct cover sheet position and dimension results.
  • the sensor 24 must be arranged at such a distance from the inlet 9 of the folding roller mill 1 or from the sensor 23 or the position of the folds in the reversal point of the folding roller mill drive that the length measurements carried out with the aid of the measuring device 13 allow the resulting folding programs to be executed.
  • the first double compensation folding section is formed in a fixed predetermined length. As already mentioned at the beginning, several such fixed predetermined lengths can be stored and called up depending on the measurement result. Subsequent to the third, last fold 28 formed on the formation of the first double compensation folding section, the - if necessary corrective - new determination of the remaining length then takes place, as previously described.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (8)

1. Plieuse pour plier en zigzag des feuilles (10) (calques de dessin ou éléments analogues), en particulier suivant un programme de pliage conforme aux normes avec des plis normaux et éventuellement des plis de compensation, comprenant un mécanisme de pliage (1), avant l'entrée duquel sont agencés des galets de transport (11, 12) destinés à introduire la feuille (10) et en amont, respectivement dans le sens de l'avancement de la feuille, au moins un détecteur (24) prévu pour palper son bord arrière (26), un émetteur et compteur d'impulsions (18, 21) pour mesurer la longueur des feuilles, et un circuit de commande qui raccorde le mécanisme de pliage (1), le détecteur (24) et l'émetteur/compteur d'impulsions (18, 21), détermine en fonction de la mesure de longueur de feuille la position des plis dans la feuille et permet l'exécution du programme de pliage ainsi établi par le mécanisme de pliage (1), un schéma de pliage prédéterminé déterminant la longueur maximale des sections de feuille situées entre deux plis ainsi que la longueur fixe d'une section de feuille de recouvrement (27) rattachée au dernier pli, tandis qu'une mesure de longueur sur la feuille (10) détermine la longueur des sections de plis de compensation éventuellement nécessaires avant la section de feuille de recouvrement, caractérisée en ce que l'émetteur d'impulsions (18) est connecté à un galet de mesure (15) qui, en service, roule sans glisser sur la feuille (10), et en ce que, dans le sens d'avancement de la feuille, le détecteur de bord arrière (24) est agencé
a) avant le galet de mesure (15) et
b) à une distance de l'entrée (9) du mécanisme de pliage (1) qui est au moins aussi grande que la longueur de la section de feuille qui est nécessaire pour les sections de plis qui, y compris les plis de compensation, se rattachent du côté du bord avant à une section de pli de largeur totale.
2. Plieuse suivant la revendication 1, comprenant un détecteur (25) pour palper le bord avant (8) de la feuille (10), caractérisée en ce que le détecteur de bord avant (25) est, dans le sens d'avancement de la feuille, agencé derrière le galet de mesure (15).
3. Plieuse suivant l'une des revendications 1 et 2, caractérisée en ce que le galet de mesure (15) coopérant avec un contre-galet (17) est mis en place sous un angle (a) à l'opposé du sens d'avancement (flèche 16) de la feuille (10).
4. Plieuse suivant la revendication 2, caractérisée en ce que le circuit de commande détermine la longueur totale de la feuille (10) sous la forme de la somme de la valeur de comptage d'impulsions et de la distance entre les détecteurs de bord avant et de bord arrière (24, 25).
5. Plieuse suivant l'une des revendications 1 et 2, caractérisée en ce que le circuit de commande détermine la longueur résiduaire de la section de feuille disponible pour des plis de compensation à l'aide de la valeur de comptage d'impulsions entre l'actionnement du détecteur de bord arrière (24) et le pliage consécutif dans le mécanisme de pliage (1).
6. Plieuse suivant la revendication 5, caractérisée en ce que le circuit de commande fixe, en fonction de la longueur résiduaire, le type et le nombre des plis requis jusqu'au dernier pliage (bord avant de la section de feuille de recouvrement 27) et fait ainsi former par le mécanisme de pliage les plis jusqu'au pli (28) qui précède l'avant-dernier ainsi que le dernier pli en des points prédéterminés de longueur, l'avant-dernier pli (29) étant cependant formé d'une manière correspondant à la longueur de la feuille (10) qui reste encore disponible, en tenant compte de la section de feuille de recouvrement (27).
7. Plieuse suivant la revendication 6, caractérisée en ce que, en fonction d'une mesure, effectuée peu avant la formation du pli (28) précédant l'avant-demier, de la longueur de feuille restante, le circuit de commande détermine la position de l'avant-dernier pli (29) ainsi que la longueur de la dernière section de pli de compensation avant la section de feuille de recouvrement (27) et il commande de manière correspondante le mécanisme de pliage (1).
8. Plieuse suivant au moins l'une des revendications précédentes, caractérisée en ce que sont prévus des cylindres de pliage (2, 3) et respectivement des bandes de pliage (4) entraînés de manière réversible dans la fente desquels (6, 7) la feuille (10) est renvoyée par le déplacement des cylindres de pliage et respectivement bandes de pliage, la vitesse périphérique des cylindres et bandes de pliage étant plus grande que la vitesse de transport, procurée par les galets de transport (11, 12), de la feuille en train de pénétrer et en ce que le circuit de commande réduit la vitesse périphérique des cylindres de pliage (2, 3) et respectivement des bandes de pliage (4) aussitôt qu'un détecteur (23) constate, dans la zone de la première fente de pliage, le bord avant (8) de la feuille (10) ou que le détecteur de bord avant (25) constate, en combinaison avec le galet de mesure (15), le passage d'une longueur de feuille correspondant à la distance entre ce détecteur et la première fente de pliage (6).
EP85103397A 1984-03-30 1985-03-22 Plieuse à feuilles Expired EP0156326B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3411742A DE3411742A1 (de) 1984-03-30 1984-03-30 Faltmaschine zum falten von bogen
DE3411742 1984-03-30

Publications (3)

Publication Number Publication Date
EP0156326A2 EP0156326A2 (fr) 1985-10-02
EP0156326A3 EP0156326A3 (en) 1987-05-20
EP0156326B1 true EP0156326B1 (fr) 1989-06-28

Family

ID=6232053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103397A Expired EP0156326B1 (fr) 1984-03-30 1985-03-22 Plieuse à feuilles

Country Status (2)

Country Link
EP (1) EP0156326B1 (fr)
DE (2) DE3411742A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354176A1 (fr) * 1988-07-28 1990-02-07 Otto Dipl.-Ing. Bay Machine à plier les feuilles de papier
US5045039A (en) * 1989-06-16 1991-09-03 Otto Bay Program controlled sheet folding apparatus for folding large sheets into predetermined formats
EP0590359A1 (fr) * 1992-09-30 1994-04-06 Vittorio Garrone Machine pour plier des feuilles de papier
US5346202A (en) * 1992-04-02 1994-09-13 Heidelberger Druckmaschinen Ag Method of monitoring the transport of print products in a printing-field machine
EP0640549A1 (fr) * 1993-08-27 1995-03-01 Océ-Nederland B.V. Dispositif pour plier des feuilles en zig-zag
US5683338A (en) * 1995-01-31 1997-11-04 Neopost Industrie Device for assisting in the adjustment of fold dimensions in a folding and inserting machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210958A1 (de) * 1992-04-02 1993-10-07 Heidelberger Druckmasch Ag Einrichtung zur Messung der Bogenlänge beim Transport von Bogen durch eine Druckmaschine
JP5194245B2 (ja) * 2007-06-15 2013-05-08 オセ−テクノロジーズ・ベー・ヴエー 折り畳み装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2016581A (en) * 1933-02-21 1935-10-08 Samuel M Langston Co Measuring device
DE1436588A1 (de) * 1964-05-23 1969-03-20 Jordis W F Zeichnungs- oder Bogenfaltvorrichtung
NL147704B (nl) * 1970-04-24 1975-11-17 Oce Van Der Grinten Nv Inrichting voor het vouwen van bladen, zoals tekeningen.
DD157320A1 (de) * 1981-01-19 1982-11-03 Tassilo Niesgoda Laengenmesseinrichtung fuer bogen-und/oder bahnfoermige bedruckstoffe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354176A1 (fr) * 1988-07-28 1990-02-07 Otto Dipl.-Ing. Bay Machine à plier les feuilles de papier
US5045039A (en) * 1989-06-16 1991-09-03 Otto Bay Program controlled sheet folding apparatus for folding large sheets into predetermined formats
US5346202A (en) * 1992-04-02 1994-09-13 Heidelberger Druckmaschinen Ag Method of monitoring the transport of print products in a printing-field machine
EP0590359A1 (fr) * 1992-09-30 1994-04-06 Vittorio Garrone Machine pour plier des feuilles de papier
EP0640549A1 (fr) * 1993-08-27 1995-03-01 Océ-Nederland B.V. Dispositif pour plier des feuilles en zig-zag
NL9301483A (nl) * 1993-08-27 1995-03-16 Oce Nederland Bv Vouwinrichting voor het zigzagvouwen van een vel.
AU671025B2 (en) * 1993-08-27 1996-08-08 Oce-Nederland B.V. A folding device for the zigzag folding of a sheet
US5551939A (en) * 1993-08-27 1996-09-03 Oce-Nederland, B.V. Zigzag folding device
US5683338A (en) * 1995-01-31 1997-11-04 Neopost Industrie Device for assisting in the adjustment of fold dimensions in a folding and inserting machine

Also Published As

Publication number Publication date
DE3571237D1 (en) 1989-08-03
DE3411742A1 (de) 1985-10-03
EP0156326A2 (fr) 1985-10-02
EP0156326A3 (en) 1987-05-20

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