EP0451494A2 - Calender for making sealing sheets - Google Patents

Calender for making sealing sheets Download PDF

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Publication number
EP0451494A2
EP0451494A2 EP91103201A EP91103201A EP0451494A2 EP 0451494 A2 EP0451494 A2 EP 0451494A2 EP 91103201 A EP91103201 A EP 91103201A EP 91103201 A EP91103201 A EP 91103201A EP 0451494 A2 EP0451494 A2 EP 0451494A2
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EP
European Patent Office
Prior art keywords
input
roller
calender
roll
whose
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
EP91103201A
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German (de)
French (fr)
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EP0451494A3 (en
EP0451494B1 (en
Inventor
Hans-Friedbert Dr. Ramm
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.)
Paul Troester MaschinenfabriK
Original Assignee
Paul Troester MaschinenfabriK
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Application filed by Paul Troester MaschinenfabriK filed Critical Paul Troester MaschinenfabriK
Publication of EP0451494A2 publication Critical patent/EP0451494A2/en
Publication of EP0451494A3 publication Critical patent/EP0451494A3/en
Application granted granted Critical
Publication of EP0451494B1 publication Critical patent/EP0451494B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
    • B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/26—Programme control arrangements

Definitions

  • the invention relates to a calender for the production of sealing plates, which has a motor-driven heating roller of large diameter, which is mounted in non-displaceable bearings, and an unheated pressure roller of smaller diameter, which is mounted in displaceable bearings against a pressing force and is driven by a separate motor.
  • So-called sealing plate calenders which have a heated roller on which the plates are rolled and vulcanized, and a cooled roller, which serves as a pressure roller for the assembly, are used for the production of fiber-reinforced flat seals, which are required at numerous points in technology is usually pressed hydraulically.
  • the seals are made from a mixture of rubber and fibers that are spreadable in solvents, which give the strength of the finished product.
  • asbestos fibers have been used as reinforcement, since the manufacture and use of the panels excluded other fibers for thermal reasons. asbestos is increasingly undesirable due to health hazards and has recently been replaced, if possible, by new high-strength and thermally resistant synthetic fibers.
  • the present invention avoids the disadvantages of the prior art and gives the possibility of drastically improving the production technology of sealing plates and thus creating the prerequisites for the processing of fibers which are a substitute for asbestos fibers. It is the object of the invention to create a possibility of tracking the roller circumferential speed by means of permanent measurement of the plate thickness building up, both for an exact synchronization of the roller circumferences and for a specific, controllable friction.
  • the invention is that the two drive motors of the two rollers are controlled by a program-controlled processor, at one input a displacement sensor for the displacement of the axis or the axle bearing of the pressure roller, at the second input a sensor for determining the passage of the Heating roller or its drive shaft attached marks, at the third input an encoder for determining the passage of marks attached to the pressure roller or its drive shaft, and at its two Outputs control devices for the speed of the two motors for the roller drive are connected.
  • a program-controlled processor at one input a displacement sensor for the displacement of the axis or the axle bearing of the pressure roller, at the second input a sensor for determining the passage of the Heating roller or its drive shaft attached marks, at the third input an encoder for determining the passage of marks attached to the pressure roller or its drive shaft, and at its two Outputs control devices for the speed of the two motors for the roller drive are connected.
  • the two motors can be used for an exact measurement of the roller circumferential speeds by measuring the time interval between the appearance of the marks arranged on the circumference of the rollers and by an exact measurement of the plate thickness, which is carried out by the displacement sensors for the displacement of the axis or the axis bearing of the pressure roller adjust the drive of the two rollers to exactly the same peripheral speeds despite the increasing diameter of the heating roller due to the increasing thickness of the stacked plate.
  • friction can also be achieved for the entire running time as well as for certain times of the running time or for certain thickness sections of the plate by a certain delay in the drive speed or an increase in the drive speed compared to the synchronous speed of the pressure roller.
  • non-processable fibers can be incorporated into the sealing plates on conventional calenders, and completely new qualities of sealing plates can also be produced, which take place through the friction run during certain, not all, phases of the construction of the sealing plate.
  • the sensors actuated by the marks on the rollers are incremental sensors.
  • buttons for scanning the surface of the plate built up on the heating roller which are connected to a further input of the processor.
  • the shaft 10 of the heating roller 2 and the shaft 11 of the pressure roller 3 are mounted in the stands 1 of the calender.
  • a DC motor 12 drives the shaft 10 of the heating roller 2 and a DC motor 13 drives the shaft 11 of the pressure roller 3.
  • the shaft 11 of the pressure roller 3 is slidably mounted in the calender stand 1, the shaft 11 is pressed in the direction of the shaft 10 by a hydraulically generated force.
  • the location of the shaft 11 is dependent on the thickness of the sealing plate 14 built up on the heating roller 2.
  • the position of the shaft 11 of the pressure roller 3 is determined by an encoder 15.
  • the heating roller 2 is provided on its circumference with marks 16 arranged at the same distance.
  • a transmitter 17 is provided, which emits a pulse each time a mark 16 passes, which is fed to the input 5 of the processor 9.
  • marks 18 are attached to the pressure roller 3, the passage of which is sensed by an encoder 19 which is connected to the input 4 of the processor 9.
  • the third input 6 of the processor 9 is connected to the encoder 15.
  • the processor has two outputs 7 and 8, of which one output 7 is connected to the control device 20 for the motor 13 and the other output 8 to the control device 21 for the motor 12.
  • buttons 22 for scanning the surface of the plate 14 built on the heating roller 2 which are connected to a further input 23 of the processor 9.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a calender for making sealing gaskets, which has a motor-driven heating roll of large diameter mounted in non-displaceable bearings and an unheated pressing roll of smaller diameter which is driven by a separate motor and mounted in displaceable bearings against a pressing force. It is the object of the invention to provide a possibility of adjusting the circumferential speed of the rolls by permanent measurement of the gasket thickness as it is built up to obtain not only an exact synchronism of the roll circumferences but also a defined, controllable friction. The invention consists in that the two drive motors of the two rolls are controlled by a program-controlled processor, at whose one input is connected a travel sensor for the displacement of the axle or axle bearing of the pressing roll, at whose second input is connected a sensor for detecting the passing by of marks made on the heating roll or its drive shaft, at whose third input is connected a sensor for detecting the passing by of marks made on the pressing roll or its drive shaft, and at whose two outputs are connected control devices for the speed of the two motors for the roll drive.

Description

Die Erfindung betrifft einen Kalander zur Herstellung von Dichtungsplatten, der eine in unverschiebbaren Lagern gelagerte, motorisch angetriebene Heizwalze großen Durchmessers und eine entgegen einer Andrückkraft in verschiebbaren Lagern gelagerte, von einem gesonderten Motor angetriebene, unbeheizte Anpreßwalze kleineren Durchmessers aufweist.The invention relates to a calender for the production of sealing plates, which has a motor-driven heating roller of large diameter, which is mounted in non-displaceable bearings, and an unheated pressure roller of smaller diameter, which is mounted in displaceable bearings against a pressing force and is driven by a separate motor.

Für die Herstellung von faserverstärkten Flachdichtungen, die in der Technik an zahlreichen Stellen benötigt werden, benutzt man sogenannte Dichtungsplattenkalander, die eine beheizte Walze besitzen, auf der die Platten aufgewalzt und ausvulkanisiert werden, und eine gekühlte Walze, die als Anpreßwalze für den Aufbau dient und zumeist hydraulisch angepreßt wird. Die Dichtungen werden dabei aus einem Gemisch von in Lösungsmitteln streichfähig gemachtem Kautschuk und Fasern, welche die Festigkeit des Fertigproduktes ergeben, hergestellt. Traditionell wurden als Festigkeitsträger Asbestfasern verwendet, da die Plattenherstellung und -Verwendung aus thermischen Gründen andere Fasern ausschlossen. Asbest ist aus Gründen der Gesundheitsgefahren in zunehmendem Maße unerwünscht und wird in neuerer Zeit, sofern möglich, durch neue hochfeste und thermisch beständige Kunstfasern ersetzt.So-called sealing plate calenders, which have a heated roller on which the plates are rolled and vulcanized, and a cooled roller, which serves as a pressure roller for the assembly, are used for the production of fiber-reinforced flat seals, which are required at numerous points in technology is usually pressed hydraulically. The seals are made from a mixture of rubber and fibers that are spreadable in solvents, which give the strength of the finished product. Traditionally, asbestos fibers have been used as reinforcement, since the manufacture and use of the panels excluded other fibers for thermal reasons. asbestos is increasingly undesirable due to health hazards and has recently been replaced, if possible, by new high-strength and thermally resistant synthetic fibers.

An die Präzision der Walzenrundlaufgenauigkeit, der Walzenoberflächengüte, der Temperaturhöhe und -genauigkeit, der gleichmäßigen Walzenandruckkraft und vor allem auch der hohen Genauigkeit der beiden Walzenumfangsgeschwindigkeiten (des Gleichlaufes) werden sehr hohe Anforderungen gestellt. Bei den traditionellen Werkstoffen der Dichtungsplatten, also bei denen mit Asbestfaserverstärkung, genügte zumeist in Bezug auf den Gleichlauf die Anwendung von Präzisionskuppelrädern für die beiden Walzen. Ein Problem besteht aber darin, daß mittels der Kuppelräder ein praktisch genauer Gleichlauf nur bei einer definierten Plattendicke erzielt werden kann. Beim Beginn des Plattenaufbaues oder beim überschreiten dieses definierten Wertes treten Abweichungen vom Optimum auf. Der Durchmesser der Heizwalze ändert sich aber auch mit der Temperatureinstellung und wird darüber hinaus auch noch im Laufe der Kalandergebrauchsdauer verändert, wenn die Walze aus Verschleißgründen nachgeschliffen werden muß. Hierdurch ist die Gleichlaufgenauigkeit bei der Anwendung von Kuppelrädern prinzipiell unzureichend bzw. begrenzt.The precision of the roll concentricity, the roll surface quality, the temperature level and accuracy, the uniform roll pressure force and, above all, the high accuracy of the two roll peripheral speeds (synchronism) are very high. With the traditional materials of the sealing plates, i.e. those with asbestos fiber reinforcement, the use of precision coupling wheels for the two rollers was mostly sufficient in terms of synchronism. One problem, however, is that practically accurate synchronization can only be achieved with a defined plate thickness by means of the coupling wheels. At the start of the plate construction or when this defined value is exceeded, deviations from the optimum occur. The diameter of the heating roller also changes with the temperature setting and is also changed in the course of the calender service life if the roller has to be reground for reasons of wear. As a result, the synchronization accuracy when using clutch wheels is in principle insufficient or limited.

Durch Anwendung der im Kalanderbau bekannten Walzen-Einzelantriebe hat man dem Mangel abzuhelfen versucht, wobei sowohl mechanische Feinregelgetriebe beim Antrieb der Preßwalze als auch Gleichstromnebenschlußmotore angewendet wurden. Dabei bestand jedoch der Mangel, daß es praktisch in beiden Fällen nicht möglich war, die gewünschte Gleichlaufgenauigkeit zu erzielen. Besonders nachteilig war dabei, daß der optimale Gleichlaufwert von der Dicke der im Aufbau befindlichen Platte abhängt, was bei jedem Arbeitsprozeß eine ständige Nachregelung verlangte.Attempts have been made to remedy the deficiency by using the individual roller drives known in calender construction, both mechanical fine-control gear units being used to drive the press roller and direct current shunt motors. However, there was a lack that it was practically impossible in both cases to achieve the desired synchronization accuracy. Particularly disadvantageous was that the optimal synchronization value depends on the thickness of the plate under construction, which required constant readjustment in every work process.

Dieses Problem wurde mit der Einführung neuer Fasern, die nicht aus Asbest bestehen, immer gravierender. Wenn z.B. die optimale Einstellung des Gleichlaufes nicht sehr genau ein gehalten wird, besteht die Gefahr des Aufreißens der im Aufbau befindlichen noch nicht ausvulkanisierten Platte und damit deren Zerstörung.This problem became more serious with the introduction of new fibers that are not made of asbestos. If e.g. the optimal setting of the synchronism is not kept very accurate, there is a risk of tearing open the plate that is not yet fully vulcanized and thus destroying it.

Die vorliegende Erfindung vermeidet die Nachteile des Standes der Technik und gibt Möglichkeit, die Herstellungstechnik von Dichtungsplatten einschneidend zu verbessern und damit die Voraussetzungen für die Verarbeitung von solchen Fasern zu schaffen, die ein Ersatz von Asbestfasern sind. Es ist die Aufgabe der Erfindung, durch permanente Messung der sich aufbauenden Plattendicke eine Möglichkeit der Nachführung der Walzenumfangsgeschwindigkeit sowohl für einen exakten Gleichlauf der Walzenumfänge als auch eine bestimmte, steuerbare Friktion zu schaffen.The present invention avoids the disadvantages of the prior art and gives the possibility of drastically improving the production technology of sealing plates and thus creating the prerequisites for the processing of fibers which are a substitute for asbestos fibers. It is the object of the invention to create a possibility of tracking the roller circumferential speed by means of permanent measurement of the plate thickness building up, both for an exact synchronization of the roller circumferences and for a specific, controllable friction.

Die Erfindung besteht darin, daß die beiden Antriebsmotoren der beiden Walzen durch einen programmgesteuerten Prozessor gesteuert sind, an dessen einen Eingang ein Weggeber für die Verschiebung der Achse oder der Achsenlager der Andrückwalze, an dessen zweiten Eingang ein Geber für die Feststellung des Vorbeilaufens von an der Heizwalze oder deren Antriebswelle angebrachter Marken, an dessen dritten Eingang ein Geber für die Feststellung des Vorbeilaufens von an der Andrückwalze oder deren Antriebswelle angebrachter Marken, und an dessen zwei Ausgänge Steuerungsvorrichtungen für die Drehzahl der beiden Motore für den Walzenantrieb angeschlossen sind.The invention is that the two drive motors of the two rollers are controlled by a program-controlled processor, at one input a displacement sensor for the displacement of the axis or the axle bearing of the pressure roller, at the second input a sensor for determining the passage of the Heating roller or its drive shaft attached marks, at the third input an encoder for determining the passage of marks attached to the pressure roller or its drive shaft, and at its two Outputs control devices for the speed of the two motors for the roller drive are connected.

Durch eine exakte Messung der Walzenumfangsgeschwindigkeiten durch Messung des zeitlichen Abstandes des Erscheinens der am Umfang der Walzen angeordneten Marken und durch eine exakte Messung der Plattendicke, die durch die Weggeber für die Verschiebung der Achse oder der Achsenlager der Andrückwalze erfolgt, lassen sich die beiden Motore für den Antrieb der beiden Walzen exakt auf absolut gleiche Umfangsgeschwindigkeiten trotz des sich vergrößernden Durchmessers der Heizwalze wegen der sich vergrößernden Dicke der aufgeschichteten Platte einstellen. Es läßt sich aber auch für die gesamte Laufdauer ebenso wie für bestimmte Zeiten der Laufdauer oder für bestimmte Dickenabschnitte der Platte eine Friktion durch eine bestimmte Verzögerung der Antriebsgeschwindigkeit oder eine Vergrößerung der Antriebsgeschwindigkeit gegenüber der Gleichlaufgeschwindigkeit der Andrückwalze erreichen. Hierdurch lassen sich auf herkömmlichen Kalandern nicht verarbeitbare Fasern in die Dichtungsplatten einarbeiten, es lassen sich auch ganz neue Qualitäten von Dichtungsplatten herstellen, die durch den Friktionslauf während bestimmter, nicht aller Aufbauphasen der Dichtungsplatte erfolgen.The two motors can be used for an exact measurement of the roller circumferential speeds by measuring the time interval between the appearance of the marks arranged on the circumference of the rollers and by an exact measurement of the plate thickness, which is carried out by the displacement sensors for the displacement of the axis or the axis bearing of the pressure roller adjust the drive of the two rollers to exactly the same peripheral speeds despite the increasing diameter of the heating roller due to the increasing thickness of the stacked plate. However, friction can also be achieved for the entire running time as well as for certain times of the running time or for certain thickness sections of the plate by a certain delay in the drive speed or an increase in the drive speed compared to the synchronous speed of the pressure roller. In this way, non-processable fibers can be incorporated into the sealing plates on conventional calenders, and completely new qualities of sealing plates can also be produced, which take place through the friction run during certain, not all, phases of the construction of the sealing plate.

Vorteilhaft ist es, digital arbeitende Schaltkreise im Prozessor vorzusehen. Für diese ist eine Programmierung einfacher durchführbar.It is advantageous to provide digitally working circuits in the processor. Programming is easier for them.

Zweckmäßig ist es, eine Nachlaufsteuerung für die Andrückwalze vorzusehen, da deren Antrieb durch ihr gegenüber der Heizwalze geringeres Gewicht leichter steuerbar ist.It is expedient to provide a follow-up control for the pressure roller, since the drive through it is opposite the heating roller lighter weight is easier to control.

Für die notwendige hochgenaue Messung der Umfangsgeschwindigkeiten der Kalander ist es zweckmäßig, wenn die von den Marken an den Walzen betätigten Geber Inkrementalgeber sind.For the necessary high-precision measurement of the peripheral speeds of the calenders, it is expedient if the sensors actuated by the marks on the rollers are incremental sensors.

Weiterhin ist es vorteilhaft, einen Umschalter zur Einstellung des Gleichlaufes der Walzen und zur Einstellung einer bestimmten einstellbaren Abweichung der Drehzahl der Andrückwalze von der Drehzahl der Heizwalze vorzusehen.Furthermore, it is advantageous to provide a changeover switch for setting the synchronism of the rollers and for setting a certain adjustable deviation of the speed of the pressure roller from the speed of the heating roller.

Weiterhin ist es vorteilhaft, Taster für das Abtasten der Oberfläche der auf der Heizwalze aufgebauten Platte vorzusehen, die an einen weiteren Eingang des Prozessors angeschlossen sind.Furthermore, it is advantageous to provide buttons for scanning the surface of the plate built up on the heating roller, which are connected to a further input of the processor.

Das Wesen der Erfindung ist nachstehend anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

Fig. 1
eine schematische Darstellung des Kalanders in Seitenansicht,
Fig. 2
eine Stirnseitenansicht des Kalanders.
The essence of the invention is explained below with reference to an embodiment shown schematically in the drawing. Show it:
Fig. 1
a schematic representation of the calender in side view,
Fig. 2
an end view of the calender.

In den Ständern 1 des Kalanders ist die Welle 10 der Heizwalze 2 und die Welle 11 der Andrückwalze 3 gelagert.The shaft 10 of the heating roller 2 and the shaft 11 of the pressure roller 3 are mounted in the stands 1 of the calender.

Ein Gleichstrommotor 12 treibt die Welle 10 der Heizwalze 2 und ein Gleichstrommotor 13 die Welle 11 der Andrückwalze 3 an. Die Welle 11 der Andrückwalze 3 ist verschiebbar im Kalanderständer 1 gelagert, durch eine hydraulisch erzeugte Kraft wird die Welle 11 in Richtung auf die Welle 10 gedrückt. Die örtliche Lage der Welle 11 ist abhängig von der Dicke der auf der Heizwalze 2 aufgebauten Dichtungsplatte 14. Die Lage der Welle 11 der Andrückwalze 3 wird von einem Geber 15 festgestellt.A DC motor 12 drives the shaft 10 of the heating roller 2 and a DC motor 13 drives the shaft 11 of the pressure roller 3. The shaft 11 of the pressure roller 3 is slidably mounted in the calender stand 1, the shaft 11 is pressed in the direction of the shaft 10 by a hydraulically generated force. The location of the shaft 11 is dependent on the thickness of the sealing plate 14 built up on the heating roller 2. The position of the shaft 11 of the pressure roller 3 is determined by an encoder 15.

Die Heizwalze 2 ist an ihrem Umfang mit im gleichen Abstand angeordneten Marken 16 versehen. Es ist ein Geber 17 vorgesehen, welcher jeweils beim Vorbeilauf einer Marke 16 einen Impuls abgibt, welcher dem Eingang 5 des Prozessors 9 zugeführt wird. Entsprechend sind Marken 18 an der Andrückwalze 3 angebracht, deren Vorbeilauf von einem Geber 19 abgetastet wird, welcher an den Eingang 4 des Prozessors 9 angeschlossen ist.The heating roller 2 is provided on its circumference with marks 16 arranged at the same distance. A transmitter 17 is provided, which emits a pulse each time a mark 16 passes, which is fed to the input 5 of the processor 9. Correspondingly, marks 18 are attached to the pressure roller 3, the passage of which is sensed by an encoder 19 which is connected to the input 4 of the processor 9.

Der dritte Eingang 6 des Prozessors 9 ist an den Geber 15 angeschlossen.The third input 6 of the processor 9 is connected to the encoder 15.

Der Prozessor hat zwei Ausgänge 7 und 8, von denen der eine Ausgang 7 an die Steuervorrichtung 20 für den Motor 13 und der andere Ausgang 8 an die Steuervorrichtung 21 für den Motor 12 angeschlossen ist.The processor has two outputs 7 and 8, of which one output 7 is connected to the control device 20 for the motor 13 and the other output 8 to the control device 21 for the motor 12.

Es können weitere Taster 22 für das Abtasten der Oberfläche der auf der Heizwalze 2 aufgebauten Platte 14 vorgesehen sein, die an einen weiteren Eingang 23 des Prozessors 9 angeschlossen sind.There may be further buttons 22 for scanning the surface of the plate 14 built on the heating roller 2, which are connected to a further input 23 of the processor 9.

Liste der Bezugszeichen:List of reference numerals:

11
KalanderständerCalender stand
22nd
HeizwalzeHeating roller
33rd
AndrückwalzePressure roller
44th
Eingangentrance
55
Eingangentrance
66
Eingangentrance
77
Ausgangexit
88th
Ausgangexit
99
Prozessorprocessor
1010th
Wellewave
1111
Wellewave
1212
Motor-Getriebe-AggregatMotor gear unit
1313
Motor-Getriebe-AggregatMotor gear unit
1414
DichtungsplatteSealing plate
1515
Weg-GeberPath encoder
1616
Markebrand
1717th
Gebergiver
1818th
Markebrand
1919th
Gebergiver
2020th
SteuerungsvorrichtungControl device
2121
SteuerungsvorrichtungControl device
2222
TasterButton
2323
Eingangentrance

Claims (6)

Kalander zur Herstellung von Dichtungsplatten, der eine in unverschiebbaren Lagern gelagerte, motorisch angetriebene Heizwalze großen Durchmessers und eine entgegen einer Andrückkraft in verschiebbaren Lagern gelagerte von einem gesonderten Motor angetriebene unbeheizte Anpreßwalze kleineren Durchmessers aufweist,
dadurch gekennzeichnet,
daß die beiden Antriebsmotoren (12,13) der beiden Walzen (2,3) durch einen programmgesteuerten Prozessor (9) gesteuert sind, an dessen einen Eingang (6) Weggeber (15) für die Verschiebung der Achse (11) oder der Achsenlager der Andrückwalze (3), an dessen zweiten Eingang (5) ein Geber (17) für die Feststellung des Vorbeilaufens von an der Heizwalze (2) oder deren Antriebswelle angebrachter Marken (16),
an dessen dritten Eingang (4) ein Geber (19) für die Feststellung des Vorbeilaufens von an der Andrückwalze (3) oder deren Antriebswelle angebrachter Marken (18),
und an dessen zwei Ausgänge (7,8) Steuerungsvorrichtungen (20,21) für die Drehzahl der beiden Motore (12,13) für den Walzenantrieb angeschlossen sind.Calender for the production of sealing plates, which has a motor-driven heating roller of large diameter, which is mounted in non-displaceable bearings, and an unheated pressure roller, which is driven by a separate motor and is driven by a separate motor against a pressing force in displaceable bearings,
characterized,
that the two drive motors (12, 13) of the two rollers (2, 3) are controlled by a program-controlled processor (9), at the one input (6) of which there is a position sensor (15) for the displacement of the axis (11) or the axis bearing Pressure roller (3), at the second input (5) of which there is an encoder (17) for determining the passage of marks (16) attached to the heating roller (2) or its drive shaft,
at its third input (4) an encoder (19) for determining the passage of marks (18) attached to the pressure roller (3) or its drive shaft,
and to whose two outputs (7, 8) control devices (20, 21) for the speed of the two motors (12, 13) for the roller drive are connected. Kalander nach Anspruch 1,
gekennzeichnet durch
digital arbeitende Schaltkreise im Prozessor (9).Calender according to claim 1,
marked by
digital circuits in the processor (9). Kalander nach Anspruch 1,
gekennzeichnet durch
eine Nachlaufsteuerung für die Andrückwalze (3).Calender according to claim 1,
marked by
a follow-up control for the pressure roller (3). Kalander nach Anspruch 1,
dadurch gekennzeichnet,
daß die von den Marken (16,18) an den Walzen (2,3) betätigten Geber (17,19) Inkrementalgeber sind.Calender according to claim 1,
characterized,
that the sensors (17, 19) actuated by the marks (16, 18) on the rollers (2, 3) are incremental sensors. Kalander nach Anspruch 1,
gekennzeichnet durch
einen Umschalter (22) zur Einstellung eines Gleichlaufes der Walzen und zur Einstellung einer bestimmten einstellbaren Abweichung der Drehzahl der Andrückwalzen (3) von der Drehzahl der Heizwalze (2).Calender according to claim 1,
marked by
a changeover switch (22) for setting a synchronism of the rollers and for setting a certain adjustable deviation of the speed of the pressure rollers (3) from the speed of the heating roller (2). Kalander nach Anspruch 1,
gekennzeichnet durch
Taster (22) für das Abtasten der Oberfläche der auf der Heizwalze (2) aufgebauten Platte (14), die an einen weiteren Eingang (23) des Prozessors (9) angeschlossen sind.Calender according to claim 1,
marked by
Buttons (22) for scanning the surface of the plate (14) built up on the heating roller (2), which are connected to a further input (23) of the processor (9).
EP91103201A 1990-04-09 1991-03-04 Calender for making sealing sheets Expired - Lifetime EP0451494B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4011410 1990-04-09
DE4011410A DE4011410C2 (en) 1990-04-09 1990-04-09 Calender for the production of sealing sheets

Publications (3)

Publication Number Publication Date
EP0451494A2 true EP0451494A2 (en) 1991-10-16
EP0451494A3 EP0451494A3 (en) 1992-03-11
EP0451494B1 EP0451494B1 (en) 1994-06-01

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Application Number Title Priority Date Filing Date
EP91103201A Expired - Lifetime EP0451494B1 (en) 1990-04-09 1991-03-04 Calender for making sealing sheets

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US (1) US5318430A (en)
EP (1) EP0451494B1 (en)
JP (1) JPH04226311A (en)
DE (2) DE4011410C2 (en)

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EP0451494A3 (en) 1992-03-11
JPH04226311A (en) 1992-08-17
EP0451494B1 (en) 1994-06-01
DE4011410C2 (en) 1994-06-09
US5318430A (en) 1994-06-07
DE4011410A1 (en) 1991-10-10

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