EP0271666B1 - Méthode pour contrôler des feuilles imprimées dans une assembleuse - Google Patents

Méthode pour contrôler des feuilles imprimées dans une assembleuse Download PDF

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Publication number
EP0271666B1
EP0271666B1 EP87115213A EP87115213A EP0271666B1 EP 0271666 B1 EP0271666 B1 EP 0271666B1 EP 87115213 A EP87115213 A EP 87115213A EP 87115213 A EP87115213 A EP 87115213A EP 0271666 B1 EP0271666 B1 EP 0271666B1
Authority
EP
European Patent Office
Prior art keywords
tolerance
range
value
measured
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 - Lifetime
Application number
EP87115213A
Other languages
German (de)
English (en)
Other versions
EP0271666A3 (en
EP0271666A2 (fr
Inventor
Roland Grunder
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.)
Grapha Holding AG
Original Assignee
Grapha Holding AG
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 Grapha Holding AG filed Critical Grapha Holding AG
Priority to AT87115213T priority Critical patent/ATE84012T1/de
Publication of EP0271666A2 publication Critical patent/EP0271666A2/fr
Publication of EP0271666A3 publication Critical patent/EP0271666A3/de
Application granted granted Critical
Publication of EP0271666B1 publication Critical patent/EP0271666B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/04—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, presence of faulty 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
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/02—Associating,collating or gathering articles from several sources
    • B65H39/04—Associating,collating or gathering articles from several sources from piles
    • B65H39/055—Associating,collating or gathering articles from several sources from piles by collecting in juxtaposed carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B65H2511/529—Defective operating conditions number thereof, frequency of occurrence

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • DE-OS 34 24 665 describes a method in which the printed sheets are grouped into groups of n sheets each, and in which at the beginning of a campaign, that is, after the machine has been switched to a new order, in the first printing sheet unit of the first group is measured at the feeder stations and the measured value initially serves as a reference value for the subsequent printing sheets.
  • the mean value of the first n press sheets then serves as a reference value for the n press sheets adjoining the first group of n press sheets, but any incorrect filing during filing of the first group is not taken into account in this averaging. If a misfeed occurs when the first sheet is pulled off, all later correctly drawn sheets are determined as misfeeds and rejected, whereas all sheets that have been removed are qualified as "good” with the same error as the first and remain in the further processing process.
  • DE-OS 34 24 665 does not take this risk into account and therefore does not work satisfactorily, in particular in the case of gathering machines with many feed stations, since, as mentioned, only the detection of missing printing sheet units can take place automatically when first printed. Detection of duplicate printed sheets can only be done by visual inspection after the first print, for which the machine is stopped, or automatically in the subsequent correct prints, in which these are then identified as defective printed sheets and discharged. However, the relevant docking stations do not yet have a correct reference value and the start routine (start program) must be repeated until a correct printed sheet is accidentally pulled off at all docking stations when it is first pulled off.
  • start routine start program
  • This method therefore has the disadvantage that the starting process has to be repeated several times, in particular in the case of machines with many landing stations, which leads to large machine loss times and the occurrence of waste.
  • the separating means for the sheets such as needles, blown air, etc.
  • the machine may happen that the machine cannot be started successfully if the first pull is unsuccessful measure and save a correct reference value on all investors after the start-up process.
  • the object of the complete invention is to create a method which eliminates the disadvantages mentioned, that is to say, with which the set-up time can be shortened to a new order or which ensures that the correct reference value is automatically determined even in the case of deficiently configured feed stations, without the Abort the start process and have to start again.
  • This method has the advantage that it is practically impossible for the measurement value of a faulty sheet to become the reference value if "n" is chosen to be equal to or greater than three, since the same error practically never occurs more than twice in succession on the same feeder.
  • the thickness measuring devices are calibrated in a blind test and taken into account when determining the tolerance range. This eliminates constant measuring errors in the thickness measuring devices.
  • the embodiment of the method according to claim 5 has the advantage that the operator is signaled if an investor has not been set up with the usual care when converting to a new order.
  • reference number 1 denotes the feeders of a collating machine, from which the printed sheets are separated and placed on a transport device 2.
  • Each of the feeders 1 is provided with a thickness measuring device.
  • This essentially comprises a sensor 3, a clock generator 4 and a computer 5.
  • the computer 5 controls a vacuum valve 6 in order to generate or cancel a suction effect on the suction pads of the investor.
  • the "reset" routine is executed and the machine is thus started.
  • the computer 5 closes the valve 6 and cuts off the vacuum supply, so that the gripper drum does not pull a sheet during the first working cycle.
  • a clock signal is emitted by the clock generator 4 after each working cycle of the investor.
  • the sensor 3 makes an empty measurement, which sets the calibration value Ro; this value therefore corresponds to the measured value without a sheet.
  • the reference value R is also reset in the computer 5 and the counter Z is brought into the starting position. At the same time, the vacuum is switched on by the computer 5.
  • the current measured value is stored in the computer 5, the counter Z is increased by 1, the current measured value is assigned to a variable M1 and the permissible deviation T is determined.
  • the permissible deviation T is preferably initially set to approximately 30% of the sheet thickness. The sheet thickness is calculated from the value of M1 minus the calibration value Ro.
  • the current measured value is again stored in the computer 5 and the counter Z is increased by 1.
  • the counter reading is now no longer 1, which is why the measured value is assigned to size M2, and it is then checked whether M2 does not deviate more than ⁇ T from M1. If this is the case, it continues until the counter Z reaches the value n, only then is the quantity M2 assigned to the reference value R. If M2 deviates more than ⁇ T from M1 before the counter has reached n, the counter is reset and the process is repeated automatically until a series of n-identical sheets have been drawn off in succession.
  • the computer 5 For each of the feeders 1, the computer 5 has two signal outputs 7 and 8, of which one (7) is directed to an AND gate 9 and the other (8) to a shift register 10.
  • the output of the shift register 10 is followed by an OR gate 11 with negation, the output of which, together with that of the AND gate 9, is guided to an AND gate 12, which opens or closes a transfer gate 13 in the transport device 2. If the computers 5 signal all feeders via their line 7 to the AND gate 9 that a reference value R has been stored, this feeds a signal to the AND gate 12. If the computers 5 of the individual feeders continue to signal the measurement result via their output 8 during a work cycle, this is fed to the OR gate 11 with the corresponding delay in the shift register 10, which supplies the AND gate 12 with a corresponding signal.
  • the AND gate 12 closes the switch 13 and the complete book blocks are sent for further processing. If, however, one of the computers 5 reported an incorrect storage to the shift register 10 during a work cycle, different signals are present at the AND gate 12 when the defective book block reaches the reject gate 13. This is now opened and the faulty book block is removed.
  • the diverter gate 13 can only be closed when all the computers 5 have a stored one via the output 7 of the AND gate 9 Report the reference value R.
  • the reject gate 13 remains open and all book blocks are rejected for the time being after the "reset" routine has been initiated, regardless of whether they have been compiled correctly or incorrectly. It is therefore impossible for faulty book blocks to be formed during the start-up phase of the machine due to the lack of a correct reference value R and to be allocated to further processing.
  • the associated waste is comparatively low, as experience has shown that the same mistake never occurs more than twice in succession on an investor.
  • 5 consecutive measured values of the same deviations from the tolerance range are counted in the computer. If three measured values of the same deviation follow, a control command is issued by the computer 5, which shuts down the machine drive 14. This prevents unnecessary waste at the start of a campaign due to inadequate setup of the separating agent (such as needles, blown air, etc.) by an investor. If the separating means on a feeder is adjusted during a long campaign, this fact is also signaled to the operator in this way.
  • the separating agent such as needles, blown air, etc.

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Collation Of Sheets And Webs (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (10)

  1. Procédé pour contrôler les feuilles imprimées d'un assemblage comportant au moins un applicateur qui extrait une feuille imprimée pendant chaque cadence et la fournit à un chemin transporteur qui réunit les feuilles en un volume, l'épaisseur des feuilles étant mesurée par chaque applicateur et en cas de différence par rapport à une plage de tolérances prédéterminée, on constate que la feuille est manquante ou est défectueuse et on déclenche une émulsion de commande pour arrêter la machine assembleuse ou pour évacuer le volume défectueux, procédé caractérisé en ce que pour chaque applicateur distinct, dès qu'est constaté la première fois un nombre déterminé (n) de mesures successives ayant pratiquement les mêmes valeurs de mesure, on fixe la position de la plage de tolérances à l'aide de cette dernière valeur de mesures.
  2. Procédé selon la revendication 1, caractérisé en ce que pour les mesures suivantes (chaque fois lorsqu'on constate de nouveau le nombre déterminé (n) de mesures correspondant à la même valeur de mesure) on fixe à nouveau la position de la plage de tolérances avec la dernière valeur de ces mesures.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que pour fixer la largeur (2 x T) de la plage de tolérances, on ne prend aucune feuille imprimée au cours d'une première étape et on prend la valeur de mesure comme valeur de tarage (Ro), au cours d'une seconde étape, on prend une feuille imprimée dont on mesure l'épaisseur et on retranche de la valeur de mesure correspondant (M1), la valeur de tarage (Ro) et on fixe comme largeur de la plage de tolérances une fonction de cette différence (M1-Ro).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'en présence de plusieurs applicateurs, on sépare à l'aide d'une impulsion de commande, le volume du livre jusqu'à ce que la plage de tolérances soit fixée pour tous les applicateurs et ce n'est qu'après cela que les impulsions de commande sont déclenchées pour évacuer les volumes défectueux.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce qu'on arrête l'entraînement de la machine à l'aide d'une impulsion de commande si sur un applicateur on mesure successivement trois fois la même déviation par rapport à la plage de tolérances.
  6. Machine assembleuse pour la mise en oeuvre du procédé selon la revendication 1 comportant au moins un applicateur (1) prévu sur une installation de transfert (2) ainsi qu'un dispositif de mesure d'épaisseur (3-5) pour les feuilles imprimées, extraites, qui peut commander l'entraînement de la machine (14) et/ou l'aiguillage (13) d'évacuation dans l'installation de transfert (2), et dans laquelle peut être mise en mémoire une plage de tolérances (± T) fixée par une valeur de référence (R), machine assembleuse caracterisée en ce que les moyens (3-5) déterminent (n) valeurs de mesure successives, pour l'essentiel, identiques, et à l'aide de la dernière de ces valeurs mesurées, il fixe la position de la plage de tolérances (± T).
  7. Machine assembleuse selon la revendication 6, caractérisée en ce que chaque fois qu'il constate un nombre prédéterminé (n) de mesures de même valeur, les moyens (3-5) fixent de nouveau la position de la plage de tolérances à l'aide de la dernière valeur parmi ces (n) mesures.
  8. Machine assembleuse selon la revendication 6, caractérisée en ce que les moyens (3-5) arrêtent la soupape de vide (6) de la ventouse de préhension pendant la première étape et fixent la valeur à vide ainsi mesurée comme valeur de tarage (Ro) et en ce que pour la seconde étape, ils commandent la mise en oeuvre de la soupape à vide (6) pour activer les organes de préhension et la valeur de tarage (Ro) est retranchée de cette seconde valeur de mesure (M1), la largeur (± T) de la plage de tolérances étant retenue comme fonction de cette différence.
  9. Machine assembleuse à plusieurs applicateurs (1) selon l'une des revendications 6 à 8, caractérisée par une commande (7-12) qui ferme l'aiguillage d'évacuation (13) lorsque toutes les installations de mesure d'épaisseur (3-5) fixent la position de la plage de tolérances (M1 ± T).
  10. Machine assembleuse selon la revendication 6, caractérisée en ce que les moyens (3-5) constatent trois valeurs de mesure successives de même différence par rapport à la plage de tolérances (M1 ± T) et arrêtent l'entraînement de la machine (14).
EP87115213A 1986-12-18 1987-10-17 Méthode pour contrôler des feuilles imprimées dans une assembleuse Expired - Lifetime EP0271666B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87115213T ATE84012T1 (de) 1986-12-18 1987-10-17 Verfahren zum ueberwachen von druckbogen in einer zusammentragmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5049/86 1986-12-18
CH5049/86A CH672776A5 (fr) 1986-12-18 1986-12-18

Publications (3)

Publication Number Publication Date
EP0271666A2 EP0271666A2 (fr) 1988-06-22
EP0271666A3 EP0271666A3 (en) 1990-07-18
EP0271666B1 true EP0271666B1 (fr) 1992-12-30

Family

ID=4287093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115213A Expired - Lifetime EP0271666B1 (fr) 1986-12-18 1987-10-17 Méthode pour contrôler des feuilles imprimées dans une assembleuse

Country Status (6)

Country Link
US (1) US4966354A (fr)
EP (1) EP0271666B1 (fr)
JP (1) JP2825811B2 (fr)
AT (1) ATE84012T1 (fr)
CH (1) CH672776A5 (fr)
DE (1) DE3783346D1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526939A (en) * 1989-02-22 1996-06-18 Hadewe B.V. Method of checking the composition of multilayer units composed of sheetlike parts and apparatus for composing, and checking the composition of, such units
US5265733A (en) * 1989-02-22 1993-11-30 Hadewe B.V. Method of checking the composition of multilayer units composed of sheetlike parts and apparatus for composing, and checking the composition of, such units
CA2010094A1 (fr) * 1989-03-09 1990-09-09 Robert R. Butler Systeme de manutention de livres pour relieuses et methode connexe
US5321624A (en) * 1992-10-06 1994-06-14 Bell & Howell Phillipsburg Company Insertion machine having multiple document detector
US5437445A (en) * 1992-10-08 1995-08-01 Pitney Bowes Inc. Method and apparatus for detecting double fed sheets
NL9202297A (nl) * 1992-12-31 1994-07-18 Hadewe Bv Werkwijze en inrichting voor het controleren of documenten van een geopende enveloppe zijn gescheiden.
JPH0924605A (ja) * 1995-06-22 1997-01-28 Grapha Holding Ag 紙葉もしくは印刷全紙および入紙を結束された製品に処理するための装置の処理効率を最適化するための方法およびこの方法を実施するための装置
US6237908B1 (en) 1999-03-02 2001-05-29 R. R. Donnelley & Sons Company Electronic book verification system
US7346206B2 (en) * 2003-06-20 2008-03-18 Hewlett-Packard Development Company, L.P. Optical object detector
DK1547952T3 (da) * 2003-12-19 2007-07-23 Ferag Ag Styring af en indretning til samling af fleksible produkter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH425721A (de) * 1965-11-08 1966-12-15 Mueller Hans Grapha Masch Auflagetisch zu einer Druckbogen-Zusammentragmaschine
US3561752A (en) * 1968-07-29 1971-02-09 Chicago Machinery Lab Inc Signature machines
US3519264A (en) * 1969-06-25 1970-07-07 Clement Co J W Collating system with malfunction control
US4170346A (en) * 1977-11-03 1979-10-09 Harris Corporation Bindery caliper
DD201434A1 (de) * 1981-10-26 1983-07-20 Rolf Boettcher Zusammentragmaschine
JPS5897603A (ja) * 1981-12-07 1983-06-10 Omron Tateisi Electronics Co 紙葉類の厚み検出装置
EP0087487B1 (fr) * 1982-03-01 1986-04-30 Christian P. Bourg Dispositif de collationnement de feuilles
JPS60110350U (ja) * 1983-12-27 1985-07-26 富士ゼロックス株式会社 転送紙の重送検知装置
DE3424665A1 (de) * 1984-07-05 1986-02-06 Kolbus GmbH & Co KG, 4993 Rahden Verfahren zum ueberwachen von druckbogeneinheiten

Also Published As

Publication number Publication date
DE3783346D1 (de) 1993-02-11
JPS63171742A (ja) 1988-07-15
CH672776A5 (fr) 1989-12-29
ATE84012T1 (de) 1993-01-15
JP2825811B2 (ja) 1998-11-18
EP0271666A3 (en) 1990-07-18
EP0271666A2 (fr) 1988-06-22
US4966354A (en) 1990-10-30

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