EP1013589A2 - Plieuse à poches et procédé de contrôle du registre dans une plieuse à poches - Google Patents

Plieuse à poches et procédé de contrôle du registre dans une plieuse à poches Download PDF

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Publication number
EP1013589A2
EP1013589A2 EP99125009A EP99125009A EP1013589A2 EP 1013589 A2 EP1013589 A2 EP 1013589A2 EP 99125009 A EP99125009 A EP 99125009A EP 99125009 A EP99125009 A EP 99125009A EP 1013589 A2 EP1013589 A2 EP 1013589A2
Authority
EP
European Patent Office
Prior art keywords
pocket
sheet
detecting
folding
unit according
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.)
Granted
Application number
EP99125009A
Other languages
German (de)
English (en)
Other versions
EP1013589A3 (fr
EP1013589B1 (fr
Inventor
Hatto Dr. Hechler
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1013589A2 publication Critical patent/EP1013589A2/fr
Publication of EP1013589A3 publication Critical patent/EP1013589A3/fr
Application granted granted Critical
Publication of EP1013589B1 publication Critical patent/EP1013589B1/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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/14—Buckling folders
    • B65H45/142—Pocket-type folders
    • B65H45/144—Pockets or stops therefor
    • 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
    • B65H45/14—Buckling folders
    • B65H45/142—Pocket-type folders
    • B65H45/147—Pocket-type folders folding rollers therefor

Definitions

  • the invention relates to a pocket folder with an adjustable folding pocket. Furthermore, the invention relates to a method for register control Pocket folding unit.
  • Known pocket folders have three jointly driven and with the same Speed rotating folding rollers and a folding pocket on
  • the folding rollers are in arranged essentially on the corner points of a right-angled triangle, the two folding rollers arranged vertically one above the other the incoming sheet into the Transport the folding pocket to a pocket stop that can be adjusted as required.
  • the pocket stop that Width of the folding pocket and the position of the pocket mouth and pocket lips for Stowage space must be set to the paper quality and sheet format used become. These settings must also be made when the air humidity changes as this changes the stiffness of the paper. It also causes a changed production speed a changed deformation of the sheet in the folding pocket or in the stowage space, so that the location of the fold break on the sheet moves and the folder may need to be readjusted. The positional deviation of the The fold break on the sheet can only be determined on the finished folded sheet.
  • a pocket folder is to be created with which deviations the fold break position on a folded sheet can be determined during production can.
  • a pocket folder is to be specified with which one Regulation of the position of the fold break on the sheet is made possible.
  • a Procedures for register control of a pocket folder are specified, the one constant position of the fold break on the sheet with changed production speed or paper rigidity guaranteed.
  • a pocket folding unit with a folding pocket with one adjustable pocket stop provided, in which means for detecting a first Time during the run of a sheet from the entry into the pocket folder to the Reaching the pocket stop, means for recording a second point in time the course of the sheet from the fold formation to the outlet from the fold pocket and means to determine the length of the sheet conveyed between the first and second point in time are provided.
  • the invention is based on the knowledge that the deviation of the position of the fold break on the arc depends on the length of the funded, which is between a before the Compression of the sheet in the folding pocket or in the compression space and the time Time of the fold formation was promoted, but also determined at a time can be to which the fold is already formed and the compression of the arch is not there is more. Because the bow has a lower stiffness than his If the rigidity is set up during setup, the sheet will be in the folding pocket or in Stuffer box deformed excessively, so that a longer arc length than in setup mode is conveyed into the folding pocket or the storage space. This causes the folds to form first at a later point in time after a longer sheet length than in set-up mode has been funded.
  • the deviation of the position of the fold break on the sheet can therefore by determining the sheet length promoted to the formation of folds, but also by the determination of the sheet length conveyed up to a point in time is carried out, in addition the Folding has already occurred and the arch is no longer compressed.
  • a setpoint can be determined for the conveyed sheet length during setup that indicates proper fold formation. The deviation of the location the fold break can thus be caused by a deviation of the conveyed sheet length from Setpoint are determined.
  • the folding pocket with a pocket mouth has a pocket lower lip and the means for detecting the second point in time as Means for detecting the deflection of the pocket lower lip when folding are trained.
  • the one that extends into the fold pocket lies Leg of the bow on the pocket lower lip and exerts pressure on this.
  • the pocket lower lip is deflected when the fold is formed.
  • the capture of the Deflection of the pocket lower lip thus offers a simple and reliable possibility for recording the time of the fold formation.
  • the deflection of the lower lip of the pocket can using strain gauges, piezoelectric sensors or optical sensors respectively.
  • the means for detecting the first Point in time as a means for detecting the sheet entry into the folding pocket and the means for Detection of the second point in time as a means for detecting the sheet outlet from the Folding pocket are formed.
  • the folding pocket has a pocket mouth and the means arranged to capture the sheet inlet and the sheet outlet on the pocket mouth are. In this way, the upset of the sheet in the folding pocket on the whole Length are taken into account, making the amount of deviation from the setpoint relative large and the deviation is therefore easy to grasp.
  • the means for detecting the Sheet inlet and the means for detecting the sheet outlet a common have optical sensor.
  • Such an embodiment of the invention Pocket folding units are particularly simple and inexpensive to carry out. With only an optical sensor and means for determining the conveyed sheet length so that a deviation of the fold break position can be determined. With one Arrangement is the fold break on the sheet by half the deviation of the conveyed arc length shifted from setpoint.
  • the adjustable folding pocket is electrically at least one Actuating actuating device and a control unit is provided, the signals the means for capturing a first point in time, the means for capturing a second Time and the means for determining between the first and second time processed sheet length processed and the electrically activated actuator of the Fold pocket controls.
  • a shift in the fold fracture position this also creates the possibility of a deviation of the Automatically correct fold fold position on the sheet.
  • the Actuating device can, for example, a fold pocket stop, the fold pocket width, move at least one fold pocket lip or the fold pocket mouth.
  • the Control unit advantageously has a microprocessor.
  • optical sensors provided for recording the beginning of the print image on an incoming sheet.
  • This Embodiment of the invention is particularly advantageous if, for example Brochure or prospectus to be produced in which the print image is relative to The beginning of the sheet is shifted or fluctuates. The fold must be broken with such sheets be placed exactly in relation to the printed image, otherwise there will be fluctuations between The beginning of the sheet and the beginning of the printed image are sometimes cut away. The capture The beginning of the printed image is in a simple way with the transmission or reflection of the bow-measuring optical sensor possible.
  • control unit continues to receive the signal from the sensor for detecting the Processed print start. Even if the print image deviates on one The inclusion of the signal from the print image sensor allows the exact position of the sheet Fold break can be ensured. Faulty end products are avoided.
  • the invention also provides a method for register control of a pocket folder, in accordance with a setpoint in a learning phase between the first and second time conveyed arc length is determined and during production determined actual value of the conveyed sheet length by controlling the electrical Actuator is regulated to the setpoint.
  • FIG. 1 shows a folding unit according to the invention for processing a paper sheet 10.
  • a first folding roller 12 is arranged vertically above a second folding roller 14.
  • Another third folding roller 16 is horizontal next to the second folding roller 14 arranged. All three folding rollers 12, 14 and 16 are driven together and point the same peripheral speed.
  • the folding rollers 12 and 14 or 14 and 16 rotate opposite each other.
  • FIG. 1 shows the point in time at which the fold is formed the compression space formed between the three folding rollers 12, 14 and 16 the two counter-rotating folding rollers 14 and 16 is detected. This wrinkle is then drawn in and the sheet is subsequently pulled down from the folder conveyed out, for example to another folder in a folder. This in The folding unit shown in FIG.
  • FIG. 1 furthermore has a folding pocket 18 with one on the Stowage space between the folding rollers 12, 14 and 16 adjacent pocket mouth.
  • the Pocket mouth in turn is through a pocket upper lip 20 and a pocket lower lip 22 educated.
  • a Pocket stop 24 To limit the length of the sheet inserted into the folding pocket is a Pocket stop 24 provided.
  • the sensor 26 can also start the print image on the sheet 10 detect. He enters both when passing through the leading edge of the sheet 10 and then Signal off when the printed image of the sheet 10 passes under the sensor 26.
  • Point of time the fold formation is detected by a sensor 28, which is on the pocket lower lip 22nd is arranged. At the point in time of the fold formation shown in FIG in the folding pocket 18 extending leg of the sheet 10 on the pocket lower lip 22 and exerts pressure on this so that the pocket lower lip 22 is deflected. This Deflection is detected by the sensor 28, for example as Strain gauge arrangement is formed.
  • the folding roller 16 is at her Provide circumference with teeth 30. These teeth 30 pass a sensor 32 which is formed, for example, by an optical sensor.
  • a sensor 32 which is formed, for example, by an optical sensor.
  • One of the sensors 32 Sequence of pulses issued by a counter in an evaluation and Control unit 34 are counted. Since the number of teeth 30 on the folding roller 16 is known is, can in the evaluation and control unit 34 based on the counted pulses and the Known extent of the folding rollers 12, 14 and 16 also determines the length of the conveyed sheet become.
  • the signals from sensors 26, 28 and 30 are used by evaluation and control unit 34 Provided.
  • the control unit 34 controls an actuating device 36 which Pocket stop 24 in the folding pocket 18 adjusted.
  • the pocket folder according to the invention is during a learning phase shown in which a setpoint of the promoted between the first and second time Arc length is determined. This setpoint is available after completion of the learning phase Control unit 34 available.
  • Figure 2 shows the pocket folding unit of Figure 1 at increased production speed or changed paper stiffness, so that the inserted in the folding pocket 18 of the Bow 10 is excessively deformed.
  • the formation of folds has thus been promoted to a greater arc length than that in FIG. 1 shown time of the fold formation in the lem phase.
  • Deviation of the actual value of the arc length between the first time the Leading edge of the sheet 10 passes under the sensor 26, and the second time, to which the fold formation by the deflection of the pocket lower lip 22 by the sensor 28 is found was funded.
  • This deviation of the actual value from the setpoint will determined by the evaluation and control unit 34, and the evaluation and control unit 34 then controls the actuating device 36 in such a way that the pocket stop 24 in Moves towards the stuffer box, resulting in less sheet length in the folding pocket 18 or the stowage space is promoted.
  • By moving the pocket stop 24 in Direction towards the stuffer box and in the opposite direction can be a Regulation of the determined actual value of the conveyed sheet length to that in the learning phase certain setpoint can be reached.
  • FIG. 3 shows the timing of the sensor signals from sensors 26, 28 and 32 of Figures 1 and 2 shown schematically.
  • 3 are the Sensor signals at low speed, i.e. the state of FIG. 1.
  • the sheet / print image sensor 26 detects the sheet entry.
  • a correction value Lr is thereby determined, which is necessary for a regulation on the beginning of the print image of a sheet.
  • the fold formation which is determined by the signal from the sensor 28, the Deflection of the pocket lower lip 22 is detected.
  • the lower diagram in FIG. 3 corresponds to the timing of the sensor signals in FIG the state shown in FIG. 2 at a higher speed.
  • the sheet inlet / print image sensor 26 detects the sheet inlet, and two pulses of the incremental encoder 32 later the beginning of the printed image on the sheet is determined. This corresponds to the correction value Lr.
  • the bow deforms into the folding pocket, as shown in Fig. 2, wave-like, so that a greater arc length in the folding pocket is conveyed before the crease can form.
  • the time B too which the sensor 28 detects the formation of folds, therefore occurs later, so that between Sheet entry A and fold formation B an arc length Ls + DL is promoted.
  • the control unit 34 must therefore the steep motor 36 control that this shifts the folding pocket stop 24 until the between Sheet entry A and fold formation B determined pulse number back to the target value Ls corresponds.
  • a second embodiment of the pocket folding unit according to the invention is in the figures 4 and 5.
  • a value of the conveyed arc length is here with the help of the signals optical sensor 40 is determined, the closest possible to the pocket mouth of the folding pocket 18th is arranged between the pocket bars.
  • the optical sensor 40 is when the Front edge of the sheet covered and released at its outlet, so that the inlet of the Front edge of the sheet 10 in the folding pocket 18 and the outlet of the front edge of the Sheet 10 can be detected after folding.
  • the formation of the wrinkle in the The compression space between the folding rollers 12, 14 and 16 is dashed in FIG. 4 shown.
  • the between the time of entry of the leading edge of the sheet 10 in the folding pocket 18 and its outlet from the folding pocket 18 are conveyed sheet length, as in the embodiment shown in Figures 1 and 2, using the on the Folding roller 16 arranged teeth 30, the sensor 32 and the evaluation and control unit 34 determined by the between the covering and the release of the sensor 40th occurring pulses of the sensor 32, which correspond to path increments, are counted.
  • the measured conveyed sheet length corresponds to that of the sheet lying flat twice the distance from the sensor 40 to the pocket stop 24 plus that for the Formation of the upsetting fold in the sheet length promoted sheet size.
  • Figure 5 shows the pocket folder of Figure 4 with increased production speed or reduced paper stiffness.
  • the compression fold which forms in the compression space between the folding rollers 12, 14 and 16 is again shown in dashed lines. It can be seen that, in the conditions shown in FIG. 5, an increased length of sheet was conveyed into the folding pocket 18 and the fold break is consequently displaced. When the front edge of the sheet 10 enters the folding pocket 18, the sheet 10 is not yet compressed, and when the front edge of the sheet 10 runs out of the folding pocket 18, the sheet 10 is no longer compressed. If, in the learning phase shown in FIG. 4, a nominal value of the conveyed sheet length Ls has been detected, a length Ls + DL is detected by the sensor 40 under the conditions shown in FIG.
  • Pocket folding unit is particularly easy to carry out on the one hand because it is used to determine the the times of the relevant sheet length are only relevant to an optical sensor 40 is required.
  • the pocket folding unit shown is particularly susceptible to faults because through the optical sensor 40 the passage of the leading edge of the sheet 10 under the Sensor 40 is detected and not the detection of a relatively small deflection of a Component is required at the time of the fold formation.
  • a third embodiment of the pocket folding unit according to the invention is in the figures 6 and 7. With the same reference numerals as in Figures 1 and 2 designated components in FIGS. 6 and 7 are corresponding to those in FIGS. 1 and 2 described trained.
  • a value of the conveyed sheet length can be found in this Embodiment of the invention now determine that first again a first Time is determined at which the leading edge of the sheet 10 defines a certain one Passed the place of the sheet path.
  • the sensor 26 can be at any distance per se in front of the pocket mouth or as close as possible to the pocket mouth of the folding pocket 18 be attached. As soon as the sensor 26, which is preferably an optical sensor is formed, the passage past the sheet leading edge of sheet 10 can be registered this signal in turn can be passed on to the evaluation and control unit.
  • the Evaluation and control unit 34 capable of receiving pulses up to a second Counting signal.
  • this is second signal is now achieved in that a front behind the folding rollers 14 and 16th arranged control light barrier, which consists of a transmitter 40 and a receiver 42 exists, is interrupted.
  • a light barrier use that works with any electromagnetic radiation per se, here a light barrier with a very narrow beam path is preferred. It is Particularly advantageous is a laser beam source and a corresponding laser sensor to use.
  • the transmitter 40 and the receiver 42 are, as shown in FIG. 7, arranged obliquely to the folding rollers 14 and 16.
  • the transmitter 40 outgoing light beam 44 emitted so that it is not parallel to the two axes 15th and 17 of the folding rollers 14 and 16 runs. Rather, the aim is the light beam 44 to be emitted from the light source 40 so that it is in a positive or negative An angle of preferably up to 20 ° runs relative to one of the axes 15 or 17.
  • Arrangement of the transmitter 40 and the receiver 42 ensures that the paper path of the sheet folded immediately before intersects the ray path and accordingly a signal is generated, which in turn is sent to the evaluation and control unit 34 is forwarded.
  • the second point of time determined in this way can be used accordingly the procedure described in the previous figures a Wen for the determine the length of the conveyed sheet. If this value because of one in the previous Figures already described compression of the arch does not match the stored setpoint corresponds, can in turn via the evaluation and control unit 34 Fold pocket stop 24 are moved until the desired arc length is reached.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Sewing Machines And Sewing (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Sheet Holders (AREA)
  • Details Of Garments (AREA)
EP99125009A 1998-12-23 1999-12-15 Plieuse à poches et procédé de contrôle du registre dans une plieuse à poches Expired - Lifetime EP1013589B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19860070A DE19860070A1 (de) 1998-12-23 1998-12-23 Taschenfalzwerk und Verfahren zur Registerregelung eines Taschenfalzwerks
DE19860070 1998-12-23

Publications (3)

Publication Number Publication Date
EP1013589A2 true EP1013589A2 (fr) 2000-06-28
EP1013589A3 EP1013589A3 (fr) 2002-05-15
EP1013589B1 EP1013589B1 (fr) 2004-11-10

Family

ID=7892674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99125009A Expired - Lifetime EP1013589B1 (fr) 1998-12-23 1999-12-15 Plieuse à poches et procédé de contrôle du registre dans une plieuse à poches

Country Status (6)

Country Link
US (1) US6641514B1 (fr)
EP (1) EP1013589B1 (fr)
JP (1) JP4173615B2 (fr)
AT (1) ATE282002T1 (fr)
DE (2) DE19860070A1 (fr)
PT (1) PT1013589E (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050090932A1 (en) * 2003-10-27 2005-04-28 Heidelberger Druckmaschinen Aktiengesellschaft Apparatus for processing preliminary products in the graphics industry
ITBO20040405A1 (it) 2004-06-25 2004-09-25 Gd Spa Metodo ed unita' per ripiegare coupon in una macchina impacchettatrice
DE102004058647A1 (de) * 2004-12-06 2006-06-14 Heidelberger Druckmaschinen Ag Vorrichtung zum Falzen flacher Werkstücke
DE102005009132B4 (de) * 2005-03-01 2019-03-14 Manroland Goss Web Systems Gmbh Verfahren zur Steuerung bzw. Regelung eines Falzapparats einer Druckmaschine
DE102005013361B4 (de) * 2005-03-23 2017-04-13 Manroland Web Systems Gmbh Verfahren zur Regelung eines Falzapparats einer Druckmaschine
ATE443015T1 (de) * 2006-02-28 2009-10-15 Mtc Macchine Trasformazione Modulare ineinanderfaltmaschine geeignet für einfache formatänderungen
US7537556B2 (en) * 2007-10-25 2009-05-26 Xerox Corporation High capacity knife folding system
US8187158B2 (en) * 2008-12-03 2012-05-29 Petratto S.R.L. Paper folding station
US9079744B2 (en) * 2009-08-26 2015-07-14 Horizon International Inc. Sheet folding apparatus
JP5018933B2 (ja) * 2010-06-28 2012-09-05 コニカミノルタビジネステクノロジーズ株式会社 用紙折畳装置
EP2646355A1 (fr) * 2010-11-30 2013-10-09 OCE-Technologies B.V. Plieuse de feuilles, procédé de pliage de feuilles et système d'impression comprenant la plieuse de feuilles

Citations (3)

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DE9006855U1 (fr) * 1990-06-19 1990-08-30 Bernd Diehm Ingenieurbuero Fuer Elektronische Steuerungen Gmbh, 8902 Neusaess, De
EP0732293A2 (fr) * 1995-03-15 1996-09-18 STAHL GmbH & Co. Maschinenfabrik Procédé pour optimiser le rendement d'exploitation d'une machine de pliage
EP0913352A2 (fr) * 1997-10-30 1999-05-06 STAHL GmbH & Co. Maschinenfabrik Plieuse à poches et procédé de contrÔle du registre dans une plieuse à poches

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US5037364A (en) * 1988-04-04 1991-08-06 Baumfolder Corporation Gatefold apparatus and method
ES2049801T3 (es) * 1989-01-25 1994-05-01 Faltex Ag Dispositivo para el plegado en zigzag de una banda de papel.
US5092832A (en) * 1990-06-11 1992-03-03 Roll Systems, Inc. Method and apparatus for creasing continuous web
EP0511488A1 (fr) * 1991-03-26 1992-11-04 Mathias Bäuerle GmbH Plieuse de papier avec des rouleaux plieurs réglables
DE4114105C2 (de) * 1991-04-30 1994-09-15 Baeuerle Gmbh Mathias Stauchfalzmaschine
US5514066A (en) * 1994-09-01 1996-05-07 Pitney Bowes Inc. Buckle chute folding machine for different length sheets
FR2729939B1 (fr) * 1995-01-31 1997-04-18 Neopost Ind Dispositif d'assistance au reglage de dimensions de pliage dans une machine plieuse insereuse
DE29516265U1 (de) * 1995-10-13 1995-12-07 Baeuerle Gmbh Mathias Stauchfalzmaschine mit einer Sammelfalztasche
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Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9006855U1 (fr) * 1990-06-19 1990-08-30 Bernd Diehm Ingenieurbuero Fuer Elektronische Steuerungen Gmbh, 8902 Neusaess, De
EP0732293A2 (fr) * 1995-03-15 1996-09-18 STAHL GmbH & Co. Maschinenfabrik Procédé pour optimiser le rendement d'exploitation d'une machine de pliage
EP0913352A2 (fr) * 1997-10-30 1999-05-06 STAHL GmbH & Co. Maschinenfabrik Plieuse à poches et procédé de contrÔle du registre dans une plieuse à poches

Also Published As

Publication number Publication date
JP2000198620A (ja) 2000-07-18
DE59911040D1 (de) 2004-12-16
EP1013589A3 (fr) 2002-05-15
ATE282002T1 (de) 2004-11-15
US6641514B1 (en) 2003-11-04
JP4173615B2 (ja) 2008-10-29
DE19860070A1 (de) 2000-06-29
EP1013589B1 (fr) 2004-11-10
PT1013589E (pt) 2005-03-31

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