EP1997954A1 - Procédé de fonctionnement d'une unité de traitement réglée hors ligne en fonction d'une machine de fabrication de bandes de matériau - Google Patents

Procédé de fonctionnement d'une unité de traitement réglée hors ligne en fonction d'une machine de fabrication de bandes de matériau Download PDF

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Publication number
EP1997954A1
EP1997954A1 EP08155257A EP08155257A EP1997954A1 EP 1997954 A1 EP1997954 A1 EP 1997954A1 EP 08155257 A EP08155257 A EP 08155257A EP 08155257 A EP08155257 A EP 08155257A EP 1997954 A1 EP1997954 A1 EP 1997954A1
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EP
European Patent Office
Prior art keywords
processing
machine
lines
processing lines
line
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
EP08155257A
Other languages
German (de)
English (en)
Other versions
EP1997954B1 (fr
Inventor
Hermann Albert Stitz
Josef Nelles
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.)
Voith Patent GmbH
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Voith Patent GmbH
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Publication date
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Publication of EP1997954A1 publication Critical patent/EP1997954A1/fr
Application granted granted Critical
Publication of EP1997954B1 publication Critical patent/EP1997954B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems

Definitions

  • the invention relates to a method for operating a, downstream of a machine for producing webs, in particular fibrous webs in the form of paper, board or tissue webs downstream processing unit with two parallel processing lines.
  • Machines for the production of material webs in the form of fibrous webs are often so-called finishing units, that is subordinate processing units for surface finishing and / or division into single roles on- or offline.
  • the material web production output coming from the machine for producing material webs can be further processed immediately or else offset in time in the desired manner, for example calendered and / or divided into single webs and wound up.
  • a calender and a slitter-winder are arranged one after the other.
  • the capacity of a calender and / or a slitter-winder is not sufficient to handle the production output of such a machine for the production of fibrous webs in a timely manner.
  • two processing lines comprising at least one processing machine, in particular a slitter-winder and / or an offline calender, are arranged parallel to each other.
  • One of the processing lines is arranged in series or in line with the machine for producing the material web and the second laterally offset thereto.
  • the wait for both machines is positioned between the two lines, allowing for easy checking of the operation and control of a single line.
  • the division takes place for example via a magazine in the form of an intermediate storage for the production output of the machine for the production of fibrous webs.
  • the arbitrary division often leads to an overcapacity in the processing unit for which personnel must be provided. The provision of these overcapacities makes little economic sense.
  • the machines of the individual lines also have due to the very different and strong fluctuations subject to utilization different maintenance intervals, leading to different downtime.
  • the invention is therefore based on the object, a method for operating a processing unit with two processing lines, which are downstream of a machine for the production of fibrous webs to develop such that the excess capacity are reduced by non-use of assets held to a large extent and by intelligent processing management as far as possible a uniform utilization and wear of the individual machines of the two lines takes place.
  • the production output of the machine is equally divided between the two processing lines.
  • Both Processing lines can be charged in time synchronously with the same subset of the production output or in alternation with the same subset of the production output.
  • both lines are utilized equally, so in the case of maintenance, these relate to the machines of both lines.
  • the maintenance intervals of both machines are then the same.
  • a further advantage of a mode of operation according to the first approach is that the individual processing lines can only be designed together with regard to the production output of the machine and thus smaller processing machines can be used within the processing lines.
  • the maximum loadable subset of the production output of the web production machine is determined as a function of the capacity of the individual processing lines, the maximum capacity of the processing lines being determined by the theoretically possible maximum throughput of the processing machine with the least capacity in a processing line.
  • the processing machines of both processing lines are operated with the same process parameters.
  • Re-loading is to maintain a continuous operation in a predefined period of time prior to or concurrent with the completion of the passage of a subset to be processed, for which the passage of that subset of the production output through the individual processing lines is monitored.
  • Non-editable subsets are fed to a sub-magazine preceding a single processing line.
  • counters are set for the individual processing line, which are increased when these processing lines are re-fed, the counter reading of the two processing lines being compared and, if deviating, the processing line being loaded with the lower counter number.
  • a first line is equipped in detail so that it is fully utilized in its capacity, that is 100% and, if possible, no production standstill is present. If excess capacity builds up as a result of the production of the pulp web production machine, these are dismantled via the second processing line.
  • the second processing line is only used to a fraction of the first. This requires that the second line in the under-utilized areas can be subjected to maintenance without disrupting the production process.
  • a major advantage of the second solution is further that both processing lines do not have to be operated with the full operating crew, but for the processing line with lower utilization and jumpers and machine operators can be used part-time or these persons can be used in the meantime on other machines.
  • the first solution thus requires a continuous continuous uniform utilization, while the second quasi includes a uniform utilization over a longer period of time when the utilization of the capacities between both processing lines changes.
  • FIG. 1a illustrates in a schematic highly simplified representation of the known assignment of a processing unit 1 to a machine 2 for the production of material webs, in particular fibrous webs in the form of paper, cardboard or tissue webs.
  • the processing unit 1 is the machine 2 functionally and spatially downstream.
  • the assignment is made offline, ie, the processing unit 1 is not integrated in the machine 2, but downstream of this as a separate functional unit, so that the fibrous web produced in the machine 2 is not transferred directly into this but spatially and temporally separated from the machine 2 further processed can.
  • the fibrous web is wound at the end of the machine 2 to a web roll 20.
  • the number of such material web rolls based on a predefined time unit determines the production output of the machine 2. This is fed via an intermediate storage in the form of a magazine 9 of the processing unit 1.
  • the magazine 9 is schematically simplified in much FIG. 1b shown.
  • the processing unit 1 comprises two processing lines 3 and 4 with at least one respective processing machine for the material web, which are arranged parallel to one another and are preferably characterized by the same structure and / or the same production capacity.
  • Production capacity is understood to mean the amount of production output possible per unit of time.
  • the production output of a processing line 3 or 4 corresponds to the final finished product after passing through one of the processing lines 3 or 4.
  • One of the two processing lines 3 is arranged downstream of the machine 2, while the second processing line 4 parallel thereto, that is preferably laterally offset, is arranged.
  • the individual processing lines 3, 4 each comprise at least one, preferably a plurality of processing machines connected in series, for example a calender 5 or 6 respectively and a downstream slitter 7 or 8.
  • the total capacity of a processing unit 1 corresponds to 1.2 to 1.8 times, preferably 1.3 to 1.5 times the production capacity of the machine 2 for producing a material web.
  • both processing lines 3, 4 are designed for this purpose preferably with regard to the dimensioning and the process parameters when operating the individual processing machines such that the same production capacity is given in both processing lines 3,4. This depends on the processing machine of a processing line 3, 4, which is characterized by the lowest flow rate or the lowest production output per unit time. According to a particularly advantageous embodiment, both processing lines 3, 4 are constructed identically. However, this is not mandatory. Both processing lines 3, 4 are preferably also operated with the same operating parameters for this purpose.
  • a uniform feed of the individual processing lines 3, 4 can according to FIG. 2a synchronous with time or according to FIG. 2b with temporal offset to each other. This is dependent, for example, on the capacity of a processing line 3, 4 and thus of the entire processing unit 1 in relation to the total output of the machine 2. Timing is synchronized preferably when the total capacity of the processing unit 1 is very small, ie only slightly exceeds the production output , Processing lines 3, 4 are preferably fed alternately alternately at high production output.
  • the allocating device 16 comprises a control and / or regulating device 10 which is controlled via a control system. and / or control device 11 controls the processes.
  • control and / or regulating device is the entirety of detection devices, actuators and the control and / or regulating device 11, which in Generally available as a control unit, understood.
  • at least one manipulated variable Y is generated, which controls an adjusting device 12 of the allocating device 16, via which the respective material web roll 20.1 to 20.n from the magazine 9 one of the two lines 3 or 4 is supplied, here the sub-magazines 9.1 and 9.2.
  • a continuous, alternating loading of the individual processing lines 3, 4 is in the simplest case in the control an increase of a counter Z made for each of the processing lines 3 and 4, wherein at counter equals always one of the processing lines, here by way of example the processing line 3 with respect to the loading Has priority.
  • a method is exemplary in the FIG. 2b explained with reference to a signal flow diagram.
  • one of the processing lines 3 or 4 is charged with a partial quantity of the production output P2 of the machine 2, which may correspond to at least one material web roll 20.
  • the time is offset to the second processing line 4 or 3 charged with the same subset.
  • the processing in particular the passage of a respective sub-set located in the processing line and passing through it, is monitored and, after passing through the processing line 3, 4 or temporally before the completion of the processing line 3, 4, it is again allocated a subset.
  • the count Z1, Z2 in the presence of material web rolls 20.1 to 20.n and the required assignment of a roll to a processing line 3, 4, it is checked how high the count Z1, Z2 is for the individual processing lines 3 and 4.
  • Z1 corresponds to a count n 1
  • Z 2 corresponds to a count of n 2 .
  • both processing lines 3, 4 are utilized evenly. This means that for each of the lines, a full-time operator's crew of machine operators and at least one other person is required. In this case, the machines are evenly worn in a corresponding manner, in particular in further processing the same web rolls, so that the maintenance intervals are evenly distributed.
  • a second possible embodiment provides for one of the processing lines, for example, to fully utilize the first processing line 3 and to use the second processing line 4 only for overcapacities or vice versa.
  • the processing lines 3 and 4 are preferably designed such that they can accommodate a large part of the production output of the machine 2. It can thereby be achieved that, in the case of an overcapacity, one of the two processing lines 3 or 4, here by way of example 4, is only weakly utilized, while the other, for example 3, continuously produces with predefined maximum throughput which can correspond to the theoretically possible maximum throughput. It is determined on the basis of the available available capacity of the first processing line 3, at which intervals the supply of the web rolls 20 must be made to line 3.
  • Such quantities can be, for example, the passage speed V passage of the material web through the processing line 3, the winding size and the type of material. If the throughput speed is the same as that on the machine 2, theoretically the entire production P2 can be further processed via the first processing line 3. However, since this is not usually the case and there is a deviation between P2 and the possible production P3 in the processing line 3, a full load of the first processing line 3 is always selected depending on the capacity, the full load corresponds to a time and quantity feed which is to be handled by the first processing line 3 and which utilizes 100% of the available capacity. This means that the processing line 3 is continuously assigned to operating personnel, at least one machine operator M3. Only the remainder x, ie, the material webs 20.
  • N that can not be processed by the first processing line 3 are further processed via the second processing line 4.
  • a comparison is made between P2 and P3 and the processing lines 3 and 4 are loaded as a function of this.
  • the output of the individual lines 3 and 4, the operation of the less heavily used processing line, here the processing line 4 can be taken over by jumpers S, for example, a part-time jumper.
  • the operating personnel, in particular the machine operator M4 can also incidentally take on other tasks, for example, as a jumper in the remaining time of non-utilization, which is then 50%, at the waiting 15 of the processing line 3 downstream packing machine 17 act.
  • Another significant advantage of partial utilization is that times of standstill of the machines are freely selectable, which can be used for maintenance.
  • skillful replacement of the utilization of the two processing lines 3, 4, for example, in predefined time intervals the production can be continued continuously over very long periods, the maintenance intervals are always moved to the underutilized times.
  • the function assignment between the first and second processing line can be interchanged, so that time is also gained here for maintenance work through unused capacities.
  • the FIG. 1 Further clarifies the waiting 13 and 14 and 15 for the individual machines of the processing lines 3 and 4, in particular a first waiting 13 for the calender 5, 6, a second waiting 14 for the slitter 7, 8 and a third waiting 15 for the packing machine 17th , Wherein the waiting for the slitter 7 and 8 and the waiting 13 for the calender 5 and 6 between the two lines 3, 4 is arranged.
  • the effort for the operator can be significantly reduced.
  • the loading of the first processing line for uninterrupted operation and thus 100% utilization is carried out in such a way that the material webs of the processing line 3 are fed virtually continuously, which are further processed here by the calender and a slitter rewinder.
  • a corresponding number of material webs must always be provided in the magazine 9, which are fed to the first processing line 3. The number is determined by the output P2 of the machine 2 and the passage speed through the processing line 3.
  • One of the two processing lines preferably the higher-utilization processing line, here line 3, is followed by a packaging machine 17 which serves to package the lines processing in the processing line.
  • This packaging machine 17 is also used by the second processing line 4.
  • the packaging machine 17 usually operates discontinuously.
  • a roller doctor unit 18 is to be provided in the processing unit.

Landscapes

  • Paper (AREA)
  • Replacement Of Web Rolls (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP08155257A 2007-05-31 2008-04-28 Procédé de fonctionnement d'une unité de traitement réglée hors ligne en fonction d'une machine de fabrication de bandes de matériau Not-in-force EP1997954B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007025374A DE102007025374A1 (de) 2007-05-31 2007-05-31 Verfahren zum Betreiben einer, einer Maschine zur Herstellung von Materialbahnen offline-nachgeordneten Verarbeitungseinheit

Publications (2)

Publication Number Publication Date
EP1997954A1 true EP1997954A1 (fr) 2008-12-03
EP1997954B1 EP1997954B1 (fr) 2011-11-30

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EP08155257A Not-in-force EP1997954B1 (fr) 2007-05-31 2008-04-28 Procédé de fonctionnement d'une unité de traitement réglée hors ligne en fonction d'une machine de fabrication de bandes de matériau

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EP (1) EP1997954B1 (fr)
AT (1) ATE535644T1 (fr)
DE (1) DE102007025374A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1008690A2 (fr) * 1998-12-07 2000-06-14 Voith Sulzer Papiertechnik Patent GmbH Procédé et dispositif pour la fabrication d' une bande de papier
WO2001065005A1 (fr) * 2000-03-03 2001-09-07 Metso Paper, Inc. Procede et dispositif de traitement de large bande de papier ou de carton
DE102004039913A1 (de) 2003-08-22 2005-03-17 Metso Paper, Inc. Verfahren zur Herstellung einer Papierbahn und eine Papiermaschinenlinie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1008690A2 (fr) * 1998-12-07 2000-06-14 Voith Sulzer Papiertechnik Patent GmbH Procédé et dispositif pour la fabrication d' une bande de papier
WO2001065005A1 (fr) * 2000-03-03 2001-09-07 Metso Paper, Inc. Procede et dispositif de traitement de large bande de papier ou de carton
DE102004039913A1 (de) 2003-08-22 2005-03-17 Metso Paper, Inc. Verfahren zur Herstellung einer Papierbahn und eine Papiermaschinenlinie

Also Published As

Publication number Publication date
ATE535644T1 (de) 2011-12-15
EP1997954B1 (fr) 2011-11-30
DE102007025374A1 (de) 2008-12-04

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