EP1588973A1 - Folding unit with folding roller adjustment. - Google Patents

Folding unit with folding roller adjustment. Download PDF

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Publication number
EP1588973A1
EP1588973A1 EP05005746A EP05005746A EP1588973A1 EP 1588973 A1 EP1588973 A1 EP 1588973A1 EP 05005746 A EP05005746 A EP 05005746A EP 05005746 A EP05005746 A EP 05005746A EP 1588973 A1 EP1588973 A1 EP 1588973A1
Authority
EP
European Patent Office
Prior art keywords
folding
pressure
sheet
roller
folding roller
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
EP05005746A
Other languages
German (de)
French (fr)
Other versions
EP1588973B1 (en
Inventor
Georg Dannemann
Klaus Stocklossa
Eberhard Krieger
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.)
MBO Postpress Solutions GmbH
Original Assignee
Maschinenbau Oppenweiler Binder GmbH and Co KG
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 Maschinenbau Oppenweiler Binder GmbH and Co KG filed Critical Maschinenbau Oppenweiler Binder GmbH and Co KG
Publication of EP1588973A1 publication Critical patent/EP1588973A1/en
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Publication of EP1588973B1 publication Critical patent/EP1588973B1/en
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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
    • B65H45/147—Pocket-type folders folding rollers 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
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/331—Skewing, correcting skew, i.e. changing slightly orientation of material
    • 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
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B65H2511/224—Nip between rollers, between belts or between rollers and belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/23—Recording or storing data

Definitions

  • the invention relates to a folding unit with at least one folding roller pair, the one having adjustable and a stationary folding roller, wherein the nip between the folding rollers depending on sheet parameters by a process computer controlled drives can be adjusted.
  • a pocket folder which has several in the sheet travel direction successively arranged Falzwalzencrue with at least one having adjustable folding roller.
  • the adjustable folding roller is at the free end an arm of a two-armed roller lever rotatably mounted, which is a machine-fixed Axis is pivotable. On the other arm of the roller lever engages a return spring, through which the adjustable folding roller in the direction of the other Folding roller is biased.
  • the second arm of the roller lever is beyond to adjust the Falzspaltenweite between the folding rollers kinematically with a Drive connected.
  • the roller lever is associated with a position measuring system, which measures the deflection of the roller lever.
  • the drives and the distance measuring systems are connected to a process computer that drives based controls on the measured values detected by the position measuring system.
  • To automatic Adjustment of the nips are initially the drives of the process computer controlled so that the folding rollers of each Falzwalzencrue contact each other come so that the distance of the nips is "0".
  • the roller levers are biased by the return springs in the direction of the other folding roller.
  • For automatically adjusting the folding gap width a bow is inserted one after the other arranged Falzwalzencrue guided according to the desired folding scheme.
  • the individual adjustable folding rollers are the floor thickness deflected accordingly. This deflection corresponds to the width of the nips, which is optimal for processing subsequent sheet.
  • the deflection will be respectively measured by the measuring system and a corresponding Measured value passed on to the process computer.
  • the process computer then controls the drives so that the previously during the first sheet pass through the measuring system measured deflection is set.
  • the set value forms one Setpoint for the nip adjustment.
  • the transport force of the folding rollers is a friction force and results from the product the force exerted by the folding rollers on the sheet normal force and the coefficient of friction between the folding rollers and the bow.
  • the normal force is due to the deformation the return springs according to the ratio of arch thickness and set Nip determined, with only a normal force builds up when the Nip is smaller than the sheet thickness.
  • the invention has for its object to provide a folding unit, in which the The nip is set and corrected automatically in a simple and precise way can be.
  • the folding unit according to the invention can by the pressure measuring devices the necessary for optimal Bogenmit Spotify normal forces are dimensioned. Especially for sheets that have different coefficients of friction across their width, This can be ensured that the bow is not inclined by the Nip be pulled.
  • the pressure measuring devices of the folding unit according to the invention can be used in combination are used with the folding mechanism known from EP 1 321 411 A1, in which case it is advantageous to connect the pressure measuring devices between the To arrange return springs and the other arm of the roller lever.
  • the folding unit according to the invention has a Position detecting device on which the actual position of an arc during the sheet pass measures.
  • the processor device has suitable software, with whose help the actual position is compared with a predetermined target position. at a deviation of the actual position from the desired position controls the processor device the drives so that the target position is reached.
  • the of the pressure measuring devices measured pressure values, which in a proper sheet pass, at in which the actual position of the arc corresponds to the desired position, be measured in the processor device stored. This makes it possible, the pressure level at the folding rollers when folding the same or similar bow from the outset optimally adjust.
  • a position detection device for example, in an arch direction after the folding rollers over the sheet plane arranged light sensor, e.g. a light curtain, be used, which is above the range of a in sheet travel direction extending arc edge is arranged and depending on the cover through the sheet edge outputs a voltage to the processor device.
  • a light sensor e.g. a light curtain
  • the Using an image processing system with a camera is conceivable.
  • the setting device shown in Figures 1 and 2 for adjusting the width of a nip corresponds in its overall construction substantially to the adjustment devices, which are provided at the folding unit, which is known from EP 1 321 411 A1 is, and by which the nip is preset by first a Test sheet is transported through the rollers, the deflection of the folding rollers thereby is measured and then the nip according to the measured values by the adjusted by the processor device drives is set .
  • a folding roller pair 15 has an upper adjustable folding roller 14 and a lower stationary folding roller 16.
  • the stationary folding roller 16 rotates about an axis 18, the at their end portions each in a frame part 10 and 12 immovably is stored.
  • the adjustable folding roller 14 rotates about an axis 20, with its two End portions each through a through hole 22 in the frame parts 10, 12 passes whose diameter is greater than the outer diameter of the Axis 20, so that the folding roller 14 can be adjusted upwards and downwards.
  • the outer ends of the axle 20 are each in an arm 23 of a two-armed Roller lever 24a, 24b stored.
  • the roller lever 24a, 24b is about a pivot axis 26 pivotable.
  • At the outer end of the other arm 25 engages from above a piston rod 28 of an actuator 26a and 26b, of a processor device 36 is controlled.
  • a pressure sensor 30 a and 30 b On the opposite side of the piston 28 Side is applied to the other arm 25, a pressure sensor 30 a and 30 b, which by a Return spring 32a and 32b is pressed against the other arm 25.
  • the return springs 32a, 32b are based on the pressure sensors 30a, 30b opposite Side of abutments 34, which are fixed to the frame parts 10 and 12 respectively.
  • Light sensor 40 is provided, which is formed by a light curtain and dependent from the cover by an expiring arc a voltage to the processor device 36 delivers.
  • a certain predetermined voltage corresponds to the desired position the left edge of an expiring bow. If this tension lasted As the arc of a bow changes, it means that the arch is slanted through the folding rollers 14, 16 is pulled. Is the voltage at the light present constant, but does not correspond to the specified nominal voltage, so deviates the actual position of the sheet transverse to the sheet passing direction of the target position.
  • the folding roller 14 is adjustable and the folding roller 16 stationary.
  • both Falzfalzen are adjustable.

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

Abstract

The document sheet feed has an adjustable roller (14) and a fixed roller (16). The adjustable roller has a pair of pressure sensors (30a,b) spaced along the feed direction. The adjustable roller can be moved between two positions, each with a drive (26a,b) controlled by a process computer (36) which determines the optimum roller gap.

Description

Die Erfindung betrifft ein Falzwerk mit wenigstens einem Falzwalzenpaar, das eine verstellbare und eine stationäre Falzwalze aufweist, wobei der Walzenspalt zwischen den Falzwalzen abhängig von Bogenparametern durch von einem Prozessrechner gesteuerte Antriebe verstellt werden kann.The invention relates to a folding unit with at least one folding roller pair, the one having adjustable and a stationary folding roller, wherein the nip between the folding rollers depending on sheet parameters by a process computer controlled drives can be adjusted.

Aus der EP 1 321 411 1A ist ein Taschenfalzwerk bekannt, das mehrere in Bogendurchlaufrichtung nacheinander angeordnete Falzwalzenpaare mit mindestens einer verstellbaren Falzwalze aufweist. Die verstellbare Falzwalze ist an dem freien Ende eines Armes eines zweiarmigen Walzenhebels drehbar gelagert, der um eine maschinenfeste Achse verschwenkbar ist. An dem anderen Arm des Walzenhebels greift eine Rückstellfeder an, durch die die verstellbare Falzwalze in Richtung der anderen Falzwalze vorgespannt wird. Der zweite Arm des Walzenhebels ist darüber hinaus zur Verstellung der Falzspaltenweite zwischen den Falzwalzen kinematisch mit einem Antrieb verbunden. Außerdem ist dem Walzenhebel ein Wegmeßsystem zugeordnet, das die Auslenkung des Walzenhebels misst. Die Antriebe sowie die Wegmeßsysteme sind mit einem Prozessrechner verbunden, der die Antriebe basierend auf den von dem Wegmeßsystem erfassten Messwerten steuert. Zur automatischen Einstellung der Walzenspalte werden zunächst die Antriebe von dem Prozessrechner so gesteuert, dass die Falzwalzen der einzelnen Falzwalzenpaare miteinander in Kontakt kommen, so dass der Abstand der Walzenspalte "0" beträgt. Die Walzenhebel werden durch die Rückstellfedern in Richtung der anderen Falzwalze vorgespannt. Zur automatischen Einstellung der Falzspaltenweite wird ein Bogen durch die nacheinander angeordneten Falzwalzenpaare gemäß dem gewünschten Falzschema hindurchgeführt. Dabei werden die einzelnen verstellbaren Falzwalzen der Bodendicke entsprechend ausgelenkt. Diese Auslenkung entspricht der Weite der Walzenspalte, die für die Bearbeitung nachfolgender Bogen optimal ist. Die Auslenkung wird jeweils durch das Wegmeßsystem gemessen und ein entsprechender Messwert an den Prozessrechner weitergegeben. Daraufhin steuert der Prozessrechner die Antriebe so, dass die zuvor beim ersten Bogendurchlauf durch das Wegmeßsystem gemessene Auslenkung eingestellt wird. Der eingestellte Wert bildet einen Sollwert für die Walzenspalteinstellung.From EP 1 321 411 1A a pocket folder is known which has several in the sheet travel direction successively arranged Falzwalzenpaare with at least one having adjustable folding roller. The adjustable folding roller is at the free end an arm of a two-armed roller lever rotatably mounted, which is a machine-fixed Axis is pivotable. On the other arm of the roller lever engages a return spring, through which the adjustable folding roller in the direction of the other Folding roller is biased. The second arm of the roller lever is beyond to adjust the Falzspaltenweite between the folding rollers kinematically with a Drive connected. In addition, the roller lever is associated with a position measuring system, which measures the deflection of the roller lever. The drives and the distance measuring systems are connected to a process computer that drives based controls on the measured values detected by the position measuring system. To automatic Adjustment of the nips are initially the drives of the process computer controlled so that the folding rollers of each Falzwalzenpaare contact each other come so that the distance of the nips is "0". The roller levers are biased by the return springs in the direction of the other folding roller. For automatically adjusting the folding gap width, a bow is inserted one after the other arranged Falzwalzenpaare guided according to the desired folding scheme. The individual adjustable folding rollers are the floor thickness deflected accordingly. This deflection corresponds to the width of the nips, which is optimal for processing subsequent sheet. The deflection will be respectively measured by the measuring system and a corresponding Measured value passed on to the process computer. The process computer then controls the drives so that the previously during the first sheet pass through the measuring system measured deflection is set. The set value forms one Setpoint for the nip adjustment.

Die Transportkraft der Falzwalzen ist eine Reibkraft und ergibt sich aus dem Produkt der von den Falzwalzen auf die Bogen ausgeübten Normalkraft und dem Reibwert zwischen den Falzwalzen und dem Bogen. Die Normalkraft wird durch die Verformung der Rückstellfedern entsprechend dem Verhältnis von Bogendicke und eingestelltem Walzenspalt bestimmt, wobei sich nur eine Normalkraft aufbaut, wenn der Walzenspalt kleiner als die Bogendicke ist. Eine Dimensionierung der für eine optimale Bogenmitnahme notwendigen Normalkraft über eine Einstellung der Walzenspalte ist hierbei nicht direkt möglich und muss über eine Korrekturrechnung unter Berücksichtigung der Differenz zwischen Walzenspalte und Bogendicke und der Federrate der Rückstellfedern vorgenommen werden.The transport force of the folding rollers is a friction force and results from the product the force exerted by the folding rollers on the sheet normal force and the coefficient of friction between the folding rollers and the bow. The normal force is due to the deformation the return springs according to the ratio of arch thickness and set Nip determined, with only a normal force builds up when the Nip is smaller than the sheet thickness. A sizing for optimal Sheet taking necessary normal force over a setting of the nips This is not directly possible and must be a correction invoice under Considering the difference between nip and arch thickness and the Spring rate of the return springs are made.

Es gibt Bogen, die über die Bogenbreite verteilt ein unterschiedliches Druckprofil aufweisen. Beispielsweise kann auf einer Seite mehr Farbe vorhanden sein als auf der anderen Seite. Hieraus ergeben sich unterschiedliche Reibwerte. Außerdem können die Walzenspalte durch Verschmutzung von Falzwalzen oder Verschleiß des Walzenbelages nicht mehr parallel sein. In Folgefalzwerken können aus verschiedenen Gründen die wirksamen Bogendicken von links nach rechts gesehen unterschiedlich sein, z.B. durch dichte oder weniger dichte Blattpackungen an Kopf- und Fußseite eines vorgefalzten Bogens. Aus den oben genannten Gründen kann es passieren, dass die Bogen beim Transport durch den Walzenspalt schräg hindurchgezogen werden, obwohl auf beiden Seiten der Falzwalzen die gleiche Normalkraft gemessen wird.There are bows that spread a different pressure profile across the sheet width exhibit. For example, there may be more color on a page than on the other side. This results in different coefficients of friction. In addition, you can the nips due to contamination of folding rollers or wear of the Roll coating no longer be parallel. In Folgefalzwerken can from different Reasons the effective arch thicknesses seen from left to right different be, e.g. due to dense or less dense leaf packs on the top and bottom a pre-folded bow. For the reasons mentioned above, it can happen that the sheets are pulled obliquely through the nip during transport, although the same normal force was measured on both sides of the folding rollers becomes.

Der Erfindung liegt die Aufgabe zugrunde, ein Falzwerk zu schaffen, bei dem der Walzenspalt auf einfache und präzise Weise automatisch eingestellt und korrigiert werden kann. The invention has for its object to provide a folding unit, in which the The nip is set and corrected automatically in a simple and precise way can be.

Diese Aufgabe wird erfindungsgemäß durch ein Falzwerk mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen des erfindungsgemäßen Falzwerkes sind Gegenstand der Ansprüche 2 bis 4.This object is achieved by a folding unit with the features of Patent claim 1 solved. Advantageous developments of the folding unit according to the invention are the subject matter of claims 2 to 4.

Bei dem erfindungsgemäßen Falzwerk können durch die Druckmesseinrichtungen die für eine optimale Bogenmitnahme notwendigen Normalkräfte dimensioniert werden. Insbesondere bei Bogen, die über ihre Breite unterschiedliche Reibwerte aufweisen, kann hierdurch sichergestellt werden, dass die Bogen nicht schräg durch den Walzenspalt gezogen werden.In the folding unit according to the invention can by the pressure measuring devices the necessary for optimal Bogenmitnahme normal forces are dimensioned. Especially for sheets that have different coefficients of friction across their width, This can be ensured that the bow is not inclined by the Nip be pulled.

Die Druckmesseinrichtungen des erfindungsgemäßen Falzwerkes können in Kombination mit dem aus der EP 1 321 411 A1 bekannten Falzwerk verwendet werden, wobei es in diesem Fall von Vorteil ist, die Druckmesseinrichtungen zwischen den Rückstellfedern und dem anderen Arm des Walzenhebels anzuordnen.The pressure measuring devices of the folding unit according to the invention can be used in combination are used with the folding mechanism known from EP 1 321 411 A1, in which case it is advantageous to connect the pressure measuring devices between the To arrange return springs and the other arm of the roller lever.

Bei einer bevorzugten Ausführungsform weist das erfindungsgemäße Falzwerk eine Lageerfassungseinrichtung auf, die die Ist-Lage eines Bogens während des Bogendurchlaufs misst. Die Prozessoreinrichtung weist eine geeignete Software auf, mit deren Hilfe die Ist-Lage mit einer vorherbestimmten Soll-Lage verglichen wird. Bei einer Abweichung der Ist-Lage von der Soll-Lage steuert die Prozessoreinrichtung die Antriebe so, dass die Soll-Lage erreicht wird. Die von den Druckmesseinrichtungen gemessenen Druckwerte, die bei einem ordnungsgemäßen Bogendurchlauf, bei dem die Ist-Lage des Bogens der Soll-Lage entspricht, gemessen werden, werden in der Prozessoreinrichtung gespeichert. Hierdurch ist es möglich, die Druckwerthöhe an den Falzwalzen bei Falzung gleicher oder ähnlicher Bogen von vornherein optimal einzustellen. In a preferred embodiment, the folding unit according to the invention has a Position detecting device on which the actual position of an arc during the sheet pass measures. The processor device has suitable software, with whose help the actual position is compared with a predetermined target position. at a deviation of the actual position from the desired position controls the processor device the drives so that the target position is reached. The of the pressure measuring devices measured pressure values, which in a proper sheet pass, at in which the actual position of the arc corresponds to the desired position, be measured in the processor device stored. This makes it possible, the pressure level at the folding rollers when folding the same or similar bow from the outset optimally adjust.

Als Lageerfassungseinrichtung kann beispielsweise ein in Bogendurchlaufrichtung nach den Falzwalzen über der Bogenebene angeordneter Lichtaster, z.B. ein Lichtvorhang, verwendet werden, der oberhalb des Bereiches einer sich in Bogenlaufrichtung erstreckenden Bogenkante angeordnet ist und abhängig von der Abdeckung durch die Bogenkante eine Spannung an die Prozessoreinrichtung abgibt. Auch die Verwendung eines Bildverarbeitungssystems mit Kamera ist denkbar.As a position detection device, for example, in an arch direction after the folding rollers over the sheet plane arranged light sensor, e.g. a light curtain, be used, which is above the range of a in sheet travel direction extending arc edge is arranged and depending on the cover through the sheet edge outputs a voltage to the processor device. Also the Using an image processing system with a camera is conceivable.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand von Zeichnungen näher erläutert. Es zeigen

Fig. 1
schematisch eine Einstelleinrichtung zur Einstellung eines optimalen Walzenspaltes zwischen zwei Falzwalzen eines Falzwerkes;
Fig. 2
die Ansicht II - II von Figur 1.
An embodiment of the invention will be explained below with reference to drawings. Show it
Fig. 1
schematically an adjusting device for setting an optimal nip between two folding rollers of a folding unit;
Fig. 2
the view II - II of Figure 1.

Die in den Figuren 1 und 2 gezeigte Einstelleinrichtung zur Einstellung der Weite eines Walzenspaltes entspricht im Gesamtaufbau im Wesentlichen den Einstelleinrichtungen, die bei dem Falzwerk vorgesehen sind, das aus der EP 1 321 411 A1 bekannt ist, und durch die der Walzenspalt voreingestellt wird, indem zunächst ein Testbogen durch die Walzen befördert wird, die Auslenkung der Falzwalzen dabei gemessen wird und dann der Walzenspalt entsprechend den Messwerten durch die von der Prozessoreinrichtung gesteuerten Antriebe eingestellt wird..The setting device shown in Figures 1 and 2 for adjusting the width of a nip corresponds in its overall construction substantially to the adjustment devices, which are provided at the folding unit, which is known from EP 1 321 411 A1 is, and by which the nip is preset by first a Test sheet is transported through the rollers, the deflection of the folding rollers thereby is measured and then the nip according to the measured values by the adjusted by the processor device drives is set ..

Ein Falzwalzenpaar 15 weist eine obere verstellbare Falzwalze 14 und eine untere stationäre Falzwalze 16 auf. Die stationäre Falzwalze 16 dreht um eine Achse 18, die an ihren Endabschnitten jeweils in einem Rahmenteil 10 bzw. 12 unverschiebbar gelagert ist. Die verstellbare Falzwalze 14 dreht um eine Achse 20, die mit ihren beiden Endabschnitten jeweils durch eine Durchgangsöffnung 22 in den Rahmenteilen 10, 12 hindurchgeht, deren Durchmesser größer ist, als der Außendurchmesser der Achse 20, so dass die Falzwalze 14 nach oben und nach unten verstellt werden kann. A folding roller pair 15 has an upper adjustable folding roller 14 and a lower stationary folding roller 16. The stationary folding roller 16 rotates about an axis 18, the at their end portions each in a frame part 10 and 12 immovably is stored. The adjustable folding roller 14 rotates about an axis 20, with its two End portions each through a through hole 22 in the frame parts 10, 12 passes whose diameter is greater than the outer diameter of the Axis 20, so that the folding roller 14 can be adjusted upwards and downwards.

Die äußeren Enden der Achse 20 sind jeweils in einem Arm 23 eines zweiarmigen Walzenhebels 24a, 24b gelagert. Der Walzenhebel 24a, 24b ist um eine Schwenkachse 26 verschwenkbar. An dem äußeren Ende des anderen Arms 25 greift von oben eine Kolbenstange 28 eines Stellantriebes 26a bzw. 26b an, der von einer Prozessoreinrichtung 36 gesteuert wird. Auf der dem Kolben 28 gegenüberliegenden Seite liegt an dem anderen Arm 25 ein Drucksensor 30a bzw. 30b an, der durch eine Rückstellfeder 32a bzw. 32b gegen den anderen Arm 25 gedrückt wird. Die Rückstellfedern 32a, 32b stützen sich auf der den Drucksensoren 30a, 30b entgegengesetzten Seite an Widerlagern 34 ab, die an dem Rahmenteilen 10 bzw. 12 befestigt sind.The outer ends of the axle 20 are each in an arm 23 of a two-armed Roller lever 24a, 24b stored. The roller lever 24a, 24b is about a pivot axis 26 pivotable. At the outer end of the other arm 25 engages from above a piston rod 28 of an actuator 26a and 26b, of a processor device 36 is controlled. On the opposite side of the piston 28 Side is applied to the other arm 25, a pressure sensor 30 a and 30 b, which by a Return spring 32a and 32b is pressed against the other arm 25. The return springs 32a, 32b are based on the pressure sensors 30a, 30b opposite Side of abutments 34, which are fixed to the frame parts 10 and 12 respectively.

In Bogendurchlaufrichtung B hinter den Falzwalzen 14, 16 ist oberhalb der Bogendurchlaufebene im Bereich des linken Randes eines durchlaufenden Bogens ein Lichttaster 40 vorgesehen, der von einem Lichtvorhang gebildet wird und abhängig von der Abdeckung durch einen auslaufenden Bogen eine Spannung an die Prozessoreinrichtung 36 abgibt. Eine bestimmte vorgegebene Spannung entspricht der Soll-Lage der linken Kante eines auslaufenden Bogens. Wenn diese Spannung sich währen des Durchlaufs eines Bogens ändert, bedeutet dies, dass der Bogen schräg durch die Falzwalzen 14, 16 gezogen wird. Ist die Spannung an dem Lichtvorhand konstant, entspricht aber nicht der vorgegebenen Sollspannung, so weicht die Ist-Lage des Bogens quer zur Bogendurchlaufrichtung von der Soll-Lage ab.In the sheet passing direction B behind the folding rollers 14, 16 is above the sheet passing plane in the area of the left edge of a continuous arc Light sensor 40 is provided, which is formed by a light curtain and dependent from the cover by an expiring arc a voltage to the processor device 36 delivers. A certain predetermined voltage corresponds to the desired position the left edge of an expiring bow. If this tension lasted As the arc of a bow changes, it means that the arch is slanted through the folding rollers 14, 16 is pulled. Is the voltage at the light present constant, but does not correspond to the specified nominal voltage, so deviates the actual position of the sheet transverse to the sheet passing direction of the target position.

Falls ein Bogen schräg durch die Falzwalzen 14, 16 gezogen wird, werden also unterschiedliche Signale von dem Lichtvorhang 40 an die Prozessoreinrichtung 36 gegeben. Anhand dieser Signale wertet die Prozessoreinrichtung 36 aus, durch welchen Antrieb 26a bzw. 26b der Druck, d.h. die Normalkraft, auf den Bogen erhöht werden muss, um zu erreichen, dass der Bogen gerade aus den Falzwalzen 14, 16 herausläuft. Die Drucksensoren 30a, 30b erfassen den für einen geraden Auslauf erforderlichen Druckwert und geben diesen an die Prozessoreinrichtung 36 weiter. Diese Druckwerte werden in der Prozessoreinrichtung 36 gespeichert. Bei einem nachfolgenden Durchlauf gleicher oder ähnlicher Bogen werden die Antriebe 26a, 26b von der Prozessoreinrichtung 36 so gesteuert, dass die gespeicherten Druckwerte an den Drucksensoren 30a, 30b gemessen werden. Auf diese Weise ist eine optimale Einstellung des Walzenspaltes zwischen den Falzwalzen 14, 16 möglich.If a bow is pulled obliquely through the folding rollers 14, 16, so are different Signals from the light curtain 40 to the processor device 36 given. Based on these signals evaluates the processor device 36, through which Drive 26a and 26b, respectively, the pressure, i. the normal force to be increased to the bow must to achieve that the sheet just out of the folding rollers 14, 16 runs out. The pressure sensors 30a, 30b detect the need for a straight run Pressure value and pass this to the processor device 36 on. These Pressure values are stored in the processor device 36. At a subsequent Passing the same or similar arc, the drives 26a, 26b of the processor means 36 controlled so that the stored pressure values to the Pressure sensors 30a, 30b are measured. This way is an optimal setting the nip between the folding rollers 14, 16 possible.

Bei dem beschriebenen Beispiel ist die Falzwalze 14 verstellbar und die Falzwalze 16 stationär. Es ist jedoch denkbar, dass beide Falzfalzen verstellbar sind.In the example described, the folding roller 14 is adjustable and the folding roller 16 stationary. However, it is conceivable that both Falzfalzen are adjustable.

Claims (4)

Falzwerk mit wenigstens einem Falzwalzenpaar, das eine verstellbare Falzwalze (14) und eine stationäre Falzwalze (16) oder zwei verstellbare Falzwalzen aufweist, wobei einer verstellbaren Falzwalze (14) wenigstens zwei im Abstand zueinander angeordnete Druckmesseinrichtungen (30a, 30b) zugeordnet sind, die bei einem Durchlauf eines Bogens Druckwerte messen, die den Drücken entsprechen, die an zwei quer zur Bogenlaufrichtung (B) beabstandeten Messstellen von der verstellbaren Falzwalze (14) auf den Bogen ausgeübt werden, und die gemessenen Druckwerte an einen Prozessrechner (36) weitergeben, wobei die verstellbare Falzwalze (14) an zwei quer zur Bogenlaufrichtung beabstandeten Verbindungsstellen mit jeweils einem Antrieb (26a, 26b) kinematisch verbunden sind und die Antriebe (26a, 26b) von dem Prozessrechner (36) auf der Basis der von den Druckmesseinrichtungen (30a, 30b) beim Bogendurchlauf gemessenen Druckwerte zur Erreichung einer optimalen Walzenspaltweite zwischen den Falzwalzen (14, 16) steuerbar sind.Folding unit with at least one folding roller pair having an adjustable folding roller (14) and a stationary folding roller (16) or two adjustable folding rollers, wherein an adjustable folding roller (14) at least two spaced apart Pressure measuring devices (30a, 30b) are assigned, which in one pass of a Measure pressure values corresponding to the pressures at two transversal to the sheet travel direction (B) spaced measuring points of the adjustable folding roller (14) the arc is exercised, and the measured pressure values to a process computer (36) pass, wherein the adjustable folding roller (14) at two transverse to the sheet running direction spaced connection points each with a drive (26a, 26b) are kinematically connected and the drives (26a, 26b) of the process computer (36) on the basis of the pressure measuring means (30a, 30b) in the sheet pass measured pressure values to achieve an optimal nip width between the folding rollers (14, 16) are controllable. Falzwerk nach Anspruch 1, dadurch gekennzeichnet, dass die verstellbare Falzwalze (14) an den Verbindungsstellen jeweils an einem Arm (23) eines um eine Schwenkachse (26) verschwenkbaren Walzenhebels (24) gelagert sind, an dessen anderem Arm (25) der entsprechende Antrieb (26a, 26b) angreift, wobei die Druckmesseinrichtungen (30a, 30b) beim Bogendurchlauf den von dem entsprechenden anderen Arm (25) ausgeübten Druck messen.Folding mechanism according to claim 1, characterized in that the adjustable folding roller (14) at the connection points in each case on an arm (23) of a pivot axis (26) pivotally mounted roller lever (24) are mounted on the other arm (25) of the corresponding drive (26a, 26b) engages, wherein the pressure measuring means (30a, 30b) in the sheet passage measure the pressure exerted by the corresponding other arm (25) pressure. Falzwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Druckmesseinrichtungen (30a, 30b) jeweils zwischen dem anderen Arm (25) und einem Ende einer Rückstellfeder (32) angeordnet sind, deren anderes Ende sich an einem Widerlager (34) abstützt. Folding mechanism according to Claim 1 or 2, characterized in that the pressure-measuring devices (30a, 30b) are each arranged between the other arm (25) and one end of a restoring spring (32) whose other end is supported on an abutment (34). Falzwerk nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Lageerfassungseinrichtung (40) zur Erfassung der Ist-Lage eines Bogens während des Bogendurchlaufs vorgesehen ist, die Prozessoreinrichtung (36) so ausgestattet ist, dass sie die Ist-Lage mit einer vorherbestimmten Soll-Lage vergleicht und bei einer Abweichung der Ist-Lage von der Soll-Lage die Antriebe (26a, 26b) so steuern kann, dass die Soll-Lage erreicht wird, wobei die Prozessoreinrichtung (36) die von den Druckmesseinrichtungen (30a, 30b) gemessenen Druckwerte bei Erreichung der Soll-Lage speichert. Folding mechanism according to one of the preceding claims, characterized in that a position detection device (40) is provided for detecting the actual position of a sheet during the sheet pass, the processor device (36) is equipped such that it compares the actual position with a predetermined desired position and, in the event of a deviation of the actual position from the desired position, the drives (26a, 26b) can control such that the setpoint Position is reached, wherein the processor means (36) stores the pressure measured by the pressure measuring means (30a, 30b) upon reaching the desired position.
EP05005746A 2004-04-22 2005-03-16 Folding unit with folding roller adjustment. Not-in-force EP1588973B1 (en)

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DE202004006387U DE202004006387U1 (en) 2004-04-22 2004-04-22 Folding unit with folding roller adjustment
DE202004006387U 2004-04-22

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DE102008050948B4 (en) * 2008-10-10 2017-03-30 Manroland Web Systems Gmbh Apparatus for processing or processing of spaced successive flat products
US20140243179A1 (en) * 2013-02-28 2014-08-28 Goss International Americas, Inc. Second fold roller with variable gap control
JP6708810B2 (en) 2014-05-20 2020-06-10 株式会社リコー Sheet processing device, image forming system

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EP1588973B1 (en) 2007-05-23
DE502005000742D1 (en) 2007-07-05
US20050239624A1 (en) 2005-10-27

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