EP1412144B1 - Procede et dispositif servant a modifier l'etat d'engagement d'un outil dans une bande de matiere qui defile - Google Patents

Procede et dispositif servant a modifier l'etat d'engagement d'un outil dans une bande de matiere qui defile Download PDF

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Publication number
EP1412144B1
EP1412144B1 EP01988649A EP01988649A EP1412144B1 EP 1412144 B1 EP1412144 B1 EP 1412144B1 EP 01988649 A EP01988649 A EP 01988649A EP 01988649 A EP01988649 A EP 01988649A EP 1412144 B1 EP1412144 B1 EP 1412144B1
Authority
EP
European Patent Office
Prior art keywords
tool
engagement
material web
speed
control unit
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
EP01988649A
Other languages
German (de)
English (en)
Other versions
EP1412144A1 (fr
Inventor
Ingo Hahn
Christoph Müller
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.)
Rexroth Indramat GmbH
Original Assignee
Rexroth Indramat 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 Rexroth Indramat GmbH filed Critical Rexroth Indramat GmbH
Publication of EP1412144A1 publication Critical patent/EP1412144A1/fr
Application granted granted Critical
Publication of EP1412144B1 publication Critical patent/EP1412144B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]

Definitions

  • the invention relates to a method and a device for switching over the engagement distance of at least one externally radially arranged tool on an associated rotating roller into a passing material web according to the preamble of claims 1 and 4, respectively.
  • Tool-equipped rolls are used for processing hereby passing material webs, for example, as a paper cutter.
  • a paper cutter is used to cut a paper web wound on a roll by means of a knife as a tool into individual sections, which usually correspond to the standardized formats.
  • the present invention is applicable to all machines in which a time-periodic movement of a tool takes place, such as cross-saw machines, tubular bag machines and the like.
  • a paper cross cutter which consists of two oppositely arranged rollers, which are each equipped with a plurality of radially outwardly arranged blades to cut a passed between two rollers material web in predetermined sections.
  • the peripheral speed of the tool is synchronized with the speed of the web to permit cutting along a correct line.
  • the cutting of the web into different formats is also possible.
  • Switching the required for this Engagement distance of the knife-like tool takes place in that different tools are assigned to different engagement distances, which come from the stock of available tools those engaged, which bring about the desired engagement distance.
  • the control of the tool engagement takes place via hydraulic adjusting means by mechanical means.
  • a disadvantage of this switching of the engagement distance is due to the rather complicated structure of the device, which is complicated to install because of the large number of mechanical parts and is subject to wear.
  • DE 36 08 111 C1 discloses the switching of the engagement distance of a tool by electronic means.
  • the upper roll is driven by the lower roll through a gear drive for synchronizing the rotating rolls.
  • the input-side data for the control unit includes the peripheral speed of the tool determined via an incremental encoder as well as data on the speed of the material web passing through the rollers. Furthermore, a desired engagement distance of the tool, ie a desired format length can be specified. Depending on this data, the two special DC motors are controlled so that they can be brought to their full speed at standstill within a very short time, which corresponds to the respective material web speed. This speed is kept constant throughout the length of the cutting process.
  • the engine can be downshifted to a lower speed and then accelerated up to the full speed for the cutting process.
  • the motor may be accelerated to higher speeds to rotate the roller at an increased speed and to make the cut before the web has moved on to the so-called synchronous format corresponding to the circle of blades of the knives.
  • a paper cutting machine which is equipped with two cutting rollers.
  • the machine has a cam control that provides a computer-generated speed curve and a position curve for the machining cylinders. During operation, this data is permanently compared with the position data of the rolls and possible correction values are created for the processing cylinders, so that the length of the cut paper web is exactly maintained. In addition, the operator can make manipulations on the control electronics to change the desired length.
  • the invention includes the procedural teaching that for switching the engagement distance of the tool in the passing material web initially several different engagement distances predefined based on correspondingly different peripheral speeds of the tool retrievable, i. provided, after activating a switch the changeover to another predefined engagement distance during operation is performed exactly when the tool is engaged, so that with the next engagement of the tool in the material web, the new engagement distance is performed.
  • the advantage of the method according to the invention lies in particular in the fact that as a result no waste of the material web occurs which neither the preceding engagement distance is still assigned to the new intervention distance.
  • a waste-free switching of the engagement distance at full web speed can be done without a shutdown of the machine is required.
  • This is achieved by the direct provision of control data by electronic means, wherein the switching itself is controlled without waste in a favorable manner depending on the engagement situation of the tool in the material web.
  • This is realized by using the time during tool engagement to electronically switch to a new engagement distance. The synchronous operation is still maintained during the engagement of the tool, so that the new peripheral speed of the tool is effective immediately thereafter.
  • the peripheral speed of the tool to be executed for this purpose is determined such that the base movement is a uniform motion component for determining the engagement distance, which is superimposed by an accelerating or deceleration effecting compensation component in order to bring about adaptation to the web-synchronous peripheral speed during the engagement of the tool.
  • a faster uniform motion component of the roller relative to the speed of the material web are performed, whereas to achieve a longer engagement distance of the tool, a relatively slower uniform motion component of the roller is performed.
  • the method described above is carried out by means of an apparatus comprising an electronic control unit which provides the circumferential speeds representing different desired engagement distances. After activating a change-over switch, the control unit performs the changeover to another, predefined engagement distance exactly as soon as the tool is engaged.
  • a sensor which determines the corresponding desired values for controlling the rollers on the principle of a real master axis.
  • velocity data obtained according to the principle of the virtual master axis.
  • a separate, directly with the control unit in communication computer unit - preferably a PC - are provided, which calculates according to different desired engagement distances of the tool according to different cam-like peripheral speeds of the tool.
  • the software used for this purpose serves as a cam disk generation tool. It is the constant rotational movement of the virtual master axis converted into a desired time rotation of the roller. In this case, there is one area of constant peripheral speed per revolution of the roller, which coincides with the path speed for realizing a synchronous engagement in the material web. About the speed in the remaining area of the engagement distance of the tool is set in the web.
  • the data ascertained by the computer are stored directly in the drive control unit assigned to each roller together with the data of a virtual master axle gear determined via the control unit.
  • the control unit preferably has a binary input which serves as a changeover switch.
  • About the switch is a simultaneous switching between the plurality of stored in the drive control unit cam plate data with the associated Leitachsgetriebe flowers. By the simultaneous switching is achieved that in any case, the synchronization of the web speed with the peripheral speed of the tool is maintained.
  • the material web 1 consisting of paper is unwound from a unwinding device 2 at a constant web speed.
  • a Antriebsr egeliki 3 is used to achieve the constant.
  • the material web 1 enters the region of two oppositely arranged rollers 4 and 5.
  • Both rollers 4 and 5 are each equipped with externally arranged tools 6 and 7, which are designed in the manner of knives to the material web 1 in defined sections cut.
  • the cut sections are then fed to a collector device 8, in which an intermediate storage takes place.
  • a arranged in the region of the material web 1 sensor 9 is used to measure the web speed.
  • the material web speed measured by the sensor 9 is supplied to a control unit 10 on the input side.
  • the control unit 10 determines therefrom position setpoint values of a virtual master axis and passes them on to the output connected and assigned to each roller 4 and 5 drive control units 11 and 12 on.
  • a signal processing of the input Leitach position and of the leading axle gearbox takes place for the control.
  • the master axis position corresponds to the current position of the rollers, which can be determined via an incremental encoder, for example, and made available to the control.
  • the desired engagement distance in the form of a constant rotational speed for the rollers is specified via the data of the leading axle gear.
  • an angular displacement at the beginning must be taken into account in order to set the desired cutting area.
  • a cam table determines the required difference curve for accelerating or braking the rollers, so that a compensating movement between the Material web speed corresponding circumferential speed of the tool during engagement and the pitch determining peripheral speed is made possible outside the engagement of the tool.
  • the synchronicity to the material web speed can be produced - comparable to the cam disk stroke.
  • the invention is not limited to the embodiment given above. There are also conceivable modifications thereof, which nevertheless intervene in the scope defined by the claims. It is also conceivable that the invention is used in a known paper cross-cutting device, which cuts a multi-longitudinally divided material web with different engagement distances such that different paper formats are produced simultaneously in each longitudinal web, wherein the engagement distances in this case are independently switchable during operation.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Shearing Machines (AREA)
  • Control Of Cutting Processes (AREA)
  • Paper (AREA)
  • Advancing Webs (AREA)
  • Making Paper Articles (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (10)

  1. Procédé servant à modifier le jeu d'engrènement d'un outil, (6, 7) disposé radialement à l'extérieur sur au moins un cylindre (4 ; 5) associé en rotation, dans une bande de matériau (1) qui avance en ligne droite à une vitesse constante, suivant le type d'une commande de disques à cames pendant la durée d'engrènement de l'outil (6, 7) dans la bande de matériau (1), la vitesse périphérique de l'outil (6, 7) est synchronisée avec la vitesse de la bande de matériau (1) tandis que, pendant la durée restante, le jeu d'engrènement souhaité est déterminé par une vitesse périphérique du cylindre (4, 5) supérieure ou inférieure,
    caractérisé en ce que
    - pour commuter le jeu d'engrènement de l'outil (6, 7) dans la bande de matériau (1), plusieurs états d'engrènement différents disponibles sont d'abord prédéfinis de façon électronique à l'aide de différentes vitesses périphériques correspondantes de l'outil (6, 7),
    - et après l'activation d'un commutateur (13), le changement dans un autre jeu d'engrènement prédéfini est alors réalisé de façon précise pendant le fonctionnement dès que l'outil (6, 7) se trouve en engrènement, de manière à obtenir le nouveau jeu d'engrènement avec l'engrènement suivant de l'outil (6, 7) dans la bande de matériau (1).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le jeu d'engrènement est déterminé par la vitesse périphérique de l'outil (6, 7) de manière à obtenir comme mouvement de base pour déterminer le jeu d'engrènement, une composante de mouvement uniforme superposée à une composante de mouvement de compensation entraînant une accélération ou un freinage, pour arriver à s'adapter à la vitesse périphérique synchrone avec la bande de matériau pendant l'engrènement de l'outil (6, 7).
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    pour obtenir un jeu d'engrènement plus petit de l'outil (6, 7), on réalise une composante de mouvement uniforme plus rapide du cylindre (4, 5) par rapport à la vitesse de la bande de matériau (1) tandis que, pour obtenir un jeu d'engrènement plus grand de l'outil (6, 7), on réalise une composante de mouvement uniforme relativement plus lente du cylindre (4, 5).
  4. Dispositif servant à modifier le jeu d'engrènement d'un outil (6, 7) disposé radialement à l'extérieur sur au moins un cylindre (4 ; 5) associé en rotation, dans une bande de matériau (1) qui avance en ligne droite à une vitesse constante, comprenant une unité de commande électronique (10) qui, suivant le type d'une commande de disques à cames pendant la durée d'engrènement de l'outil (6, 7) dans la bande de matériau (1), synchronise la vitesse périphérique de l'outil (6, 7) avec la vitesse de la bande de matériau (1), le jeu d'engrènement souhaité étant déterminé en réglant une vitesse périphérique supérieure ou inférieure du cylindre (4, 5) pendant la durée restante,
    caractérisé en ce que
    - l'unité de commande électronique (10) met à disposition différentes vitesses périphériques disponibles représentant des états d'engrènement souhaités,
    - et, selon la mesure de l'unité de commande (10), après l'activation d'un commutateur (13), le changement dans un autre jeu d'engrènement prédéfini est alors réalisé de façon précise dès que l'outil (6, 7) se trouve en engrènement pour obtenir le nouveau jeu d'engrènement avec l'engrènement suivant de l'outil (6, 7).
  5. Dispositif selon la revendication 4,
    caractérisé en ce qu'
    on prévoit pour mesurer la vitesse de la bande de matériau (1) un capteur (9) raccordé, côté entrée, à l'unité de commande (10) qui calcule à cet effet les valeurs de consigne nécessaires au principe de commande des axes de coordonnées réelles.
  6. Dispositif selon la revendication 4,
    caractérisé en ce que
    les données de vitesse calculées de manière électronique pour la vitesse de la bande de matériau (1) sont amenées, côté entrée, à l'unité de commande (10) qui calcule à cet effet les valeurs de consignes nécessaires au principe de commande des axes de coordonnées virtuelles.
  7. Dispositif selon la revendication 5 ou 6,
    caractérisé en ce que
    l'unité de commande (10) met à disposition les valeurs de consigne obtenues pour les axes coordonnées d'une unité de réglage d'entraînement (11, 12) associée à chaque cylindre (4, 5), ce qui permet d'actionner le cylindre associé (4, 5) par un réglage de position.
  8. Dispositif selon la revendication 4,
    caractérisé en ce qu'
    on prévoit une unité de calcul (14) en liaison avec l'unité de commande (10) pour déterminer de manière électronique différentes vitesses périphériques correspondantes de l'outil (6, 7) suivant le type de disques à cames à partir de différents états d'engrènement souhaités de l'outil (6, 7).
  9. Dispositif selon la revendication 8,
    caractérisé en ce que
    les données obtenues par l'unité de calcul (14) sont enregistrées directement dans l'unité de réglage d'entraînement (11, 12) associée à chaque cylindre (4, 5), conjointement avec les données d'une transmission d'axes de coordonnées virtuelles obtenues par l'unité de commande (10).
  10. Dispositif selon la revendication 4,
    caractérisé en ce que
    l'unité de commande (10) dispose d'une entrée binaire servant de commutateur (13), qui permet d'effectuer simultanément la commutation entre plusieurs données suivant le type de disques à cames déposées dans l'unité de réglage d'entraînement (11, 12) avec les données associées de la transmission d'axes de coordonnées.
EP01988649A 2000-10-26 2001-10-26 Procede et dispositif servant a modifier l'etat d'engagement d'un outil dans une bande de matiere qui defile Expired - Lifetime EP1412144B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10053247 2000-10-26
DE10053247A DE10053247A1 (de) 2000-10-26 2000-10-26 Verfahren und Vorrichtung zum Umschalten des Eingriffsabstandes eines Werkzeuges in eine vorbeilaufende Materialbahn
PCT/DE2001/004026 WO2002034484A1 (fr) 2000-10-26 2001-10-26 Procede et dispositif servant a modifier l'etat d'engagement d'un outil dans une bande de matiere qui defile

Publications (2)

Publication Number Publication Date
EP1412144A1 EP1412144A1 (fr) 2004-04-28
EP1412144B1 true EP1412144B1 (fr) 2006-06-14

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Application Number Title Priority Date Filing Date
EP01988649A Expired - Lifetime EP1412144B1 (fr) 2000-10-26 2001-10-26 Procede et dispositif servant a modifier l'etat d'engagement d'un outil dans une bande de matiere qui defile

Country Status (10)

Country Link
US (1) US7089078B2 (fr)
EP (1) EP1412144B1 (fr)
JP (1) JP2004512188A (fr)
AT (1) ATE329735T1 (fr)
AU (1) AU2002220507A1 (fr)
CA (1) CA2426971C (fr)
DE (3) DE10053247A1 (fr)
DK (1) DK1412144T3 (fr)
ES (1) ES2266294T3 (fr)
WO (1) WO2002034484A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10245322A1 (de) * 2002-09-27 2004-04-08 Man Roland Druckmaschinen Ag Verfahren zum Querschneiden einer Bahn
US20060005675A1 (en) * 2004-07-06 2006-01-12 Scheffer, Inc. Process of using a fixed size rotary cutter to cut products of variable repeat lengths
US20080028902A1 (en) * 2006-08-03 2008-02-07 Kimberly-Clark Worldwide, Inc. Dual roll, variable sheet-length, perforation system
DE102007034834A1 (de) * 2007-07-26 2009-01-29 Robert Bosch Gmbh Verfahren und Vorrichtung zum Optimieren von Querbearbeitungsvorgängen
EP3719821A1 (fr) * 2017-02-21 2020-10-07 Manz Italy S.r.l. Appareil et procédé d'usinage

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US4170155A (en) * 1977-11-03 1979-10-09 Nihon Electronic Industry Co., Ltd. Rotary cutter for successively cutting moving material to lengths
DE2749174A1 (de) * 1977-11-03 1979-05-10 Hauni Werke Koerber & Co Kg Anordnung zum steuern der rotierenden schneidwalze einer querschneidvorrichtung
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Also Published As

Publication number Publication date
DE10053247A1 (de) 2002-05-29
ES2266294T3 (es) 2007-03-01
WO2002034484A1 (fr) 2002-05-02
EP1412144A1 (fr) 2004-04-28
US20040059457A1 (en) 2004-03-25
DE50110192D1 (de) 2006-07-27
US7089078B2 (en) 2006-08-08
DK1412144T3 (da) 2006-10-16
DE10194647D2 (de) 2003-11-06
CA2426971A1 (fr) 2002-05-02
ATE329735T1 (de) 2006-07-15
CA2426971C (fr) 2006-10-03
JP2004512188A (ja) 2004-04-22
AU2002220507A1 (en) 2002-05-06

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