EP0451495B1 - Control apparatus for a calender for making sealing sheets - Google Patents
Control apparatus for a calender for making sealing sheets Download PDFInfo
- Publication number
- EP0451495B1 EP0451495B1 EP91103202A EP91103202A EP0451495B1 EP 0451495 B1 EP0451495 B1 EP 0451495B1 EP 91103202 A EP91103202 A EP 91103202A EP 91103202 A EP91103202 A EP 91103202A EP 0451495 B1 EP0451495 B1 EP 0451495B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- processor
- function
- circuits
- sheet thickness
- revolutions
- 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
Links
- 238000007789 sealing Methods 0.000 title claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 description 11
- 238000003825 pressing Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 5
- 230000015654 memory Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000012209 synthetic fiber Substances 0.000 description 4
- 229920002994 synthetic fiber Polymers 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- 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 device for controlling a calender for the production of sealing plates, which is equipped with a motor-driven heating roller of large diameter and a separately motor-driven counter-pressure roller with a smaller diameter, with at least one plate thickness sensor, two speed sensors, temperature sensors, and motor speed controllers and pressure force generators.
- sealing plate calenders which have a heated roller, on which a very large number of very thin layers are rolled up to the desired plate thickness and at the same time vulcanized, and a cooled roller , which serves as a pressure roller for the structure and is usually pressed hydraulically.
- a hollow cylinder made of fiber-reinforced rubber of the desired plate thickness is created on the heating roller, which is cut through parallel to the axis after the roller pair has been stopped, so that after removal from the heating roller from the hollow cylinder, a large rectangular plate is formed, which later becomes a plurality as required is punched by fiber-reinforced flat seals.
- the seals are made from a mixture of rubber and fibers made processable in solvents, which result in the strength of the finished product. produced.
- asbestos fibers have been used as reinforcement, since the manufacture and use of panels excluded other fibers for thermal reasons.
- asbestos is increasingly undesirable due to health hazards and has recently been replaced, if possible, with high-strength and thermally resistant synthetic fibers.
- processors as has become known in a computer-controlled laboratory measuring roll mill which has become known from the plastics 74 (1984, p. 654), is prohibited because of the completely different problems in the operation of the calenders for the production of sealing plates, which differ from one another fundamentally differentiate the calender treated in the literature for the processing of a continuous belt. It is also not possible to use processors which are used in the automation of calender lines in the rubber industry to control the processing machines arranged in front of the calender and behind the calender.
- the invention avoids the disadvantages of the prior art.
- the invention has for its object to provide conditions for the proper control of the manufacturing process of synthetic fiber reinforced gasket sheets, in which a consistently high quality of the gasket sheets produced is achieved.
- the invention achieves this by leaving the previously generally common machine and process control by the operator and an automatic one Litigation is transferred.
- a computer program is developed which takes into account all the parameters mentioned and thereby enables the operator to concentrate on the monitoring of the system and its optimal loading with mass and merely to monitor the other entire manufacturing process.
- the calender is equipped with counter-bending force generators, it is advantageous if a control device for the counter-bending device is connected to the output of the processor and if circuits for function links are provided in the processor for generating counter-bending force depending on the plate thickness.
- a temperature control is used in particular when building thicker sealing plates, it is expedient if temperature sensors for the heating medium and / or coolant are connected to the inputs of the processor and the heating control of the heating roller and / or the cooling control of the pressure roller are connected to the outputs of the processor and if the processor has circuits for function combinations of heating medium and / or coolant temperature as a function of the time and / or revolutions carried out and / or plate thickness.
- actuations for a solvent supply device and / or a material supply device and / or a device for material distribution are connected to the outputs of the processor.
- circuits for the function combinations are connected upstream or downstream or in parallel with further circuits for controlling these circuits for the function combinations depending on material mixtures, material components and / or the solvent content to be processed.
- the processor has temperature sensors is connected for the surface temperature of the plate being manufactured and a circuit is provided for linking the functions of the process instructions as a function of the surface temperature.
- 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 13 drives the shaft 10 of the heating roller 2 and a DC motor 12 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, by means of a force generated by the hydraulic pressing device 24, the shaft 11 is pressed in the direction of the shaft 10.
- 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 sensor 17 is provided, which in each case passes one Mark 16 emits a pulse which is fed to the input 4 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 5 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 21 for the motor 12 and the other output 8 is connected to the control device 20 for the motor 13.
- Tubes 26 lead from the heating device 25 into the heating roller 2.
- a temperature sensor 27 is arranged in these tubes, the output signals of which are introduced into the input 28 of the processor 9.
- the pressure roller 3 is connected to the cooling device 30 via pipes 29.
- a temperature sensor 31 arranged in the tubes 29 is connected to the input 32 of the processor 9. From the output 33, a control line leads to the heating device 25, from the output 34 of the processor 9, a control line leads to the cooling device 30.
- a further output 35 of the processor 9 leads to the control device 36 of the hydraulic pressing device 24 on the pressure roller 3. From the output 37 of the processor 9, a control line leads to the control device 38 of the counter-bending device 39.
- a loading device 40 is arranged, which is connected to the output 41 of the processor 9.
- a device for the solvent supply 42 is provided, the solvent flow of which is controlled by the control device 43, which is connected to the output 44 of the processor. Furthermore, a material distribution device 45 is provided, the control of which is connected to the output 46 of the processor.
- Various memories 47 in which recipes and / or procedures are recorded, are connected to the input 49 of the processor 9 via the selection device 48.
- the output 50 of the processor which leads to the memory 47, is provided for recording programs in accordance with a manually performed control.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zur Steuerung eines Kalanders für die Herstellung von Dichtungsplatten, der mit einer motorisch angetriebenen Heizwalze großen Durchmessers und einer gesondert motorisch angetriebenen Gegendruckwalze kleineren Durchmessers, mit mindestens einem Plattendickemeßgeber, zwei Drehzahlgebern, Temperaturgeber, sowie Motordrehzahlreglern und Andrückkrafterzeugern ausgestattet ist.The invention relates to a device for controlling a calender for the production of sealing plates, which is equipped with a motor-driven heating roller of large diameter and a separately motor-driven counter-pressure roller with a smaller diameter, with at least one plate thickness sensor, two speed sensors, temperature sensors, and motor speed controllers and pressure force generators.
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 sehr viele sehr dünne Schichten bis zur gewünschten Plattenstärke aufgewalzt und dabei gleichzeitig ausvulkanisiert werden, und eine gekühlte Walze, die als Anpreßwalze für den Aufbau dient und zumeist hydraulisch angepreßt wird. Auf diese Weise ist auf der Heizwalze ein Hohlzylinder aus faserverstärktem Gummi der gewünschten Plattendicke entstanden, welcher nach Stillsetzung des Walzenpaares achsparallel durchgeschnitten wird, so daß nach dem Abziehen von der Heizwalze aus dem Hohlzylinder eine große rechteckige Platte entsteht, die später nach Bedarf zu einer Vielzahl von faserverstärkten Flachdichtungen gestanzt wird.For the production of fiber-reinforced flat gaskets, which are required in numerous places in technology, so-called sealing plate calenders are used, which have a heated roller, on which a very large number of very thin layers are rolled up to the desired plate thickness and at the same time vulcanized, and a cooled roller , which serves as a pressure roller for the structure and is usually pressed hydraulically. In this way, a hollow cylinder made of fiber-reinforced rubber of the desired plate thickness is created on the heating roller, which is cut through parallel to the axis after the roller pair has been stopped, so that after removal from the heating roller from the hollow cylinder, a large rectangular plate is formed, which later becomes a plurality as required is punched by fiber-reinforced flat seals.
Die Dichtungen werden dabei aus einem Gemisch von in Lösungsmitteln verarbeitbar 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 jedoch aus Gründen der Gesundheitsgefahren in zunehmendem Maße unerwünscht und wird in neuerer Zeit, sofern möglich, durch hochfeste und thermisch beständige Kunstfasern ersetzt.The seals are made from a mixture of rubber and fibers made processable in solvents, which result in the strength of the finished product. produced. Traditionally, asbestos fibers have been used as reinforcement, since the manufacture and use of panels excluded other fibers for thermal reasons. However, asbestos is increasingly undesirable due to health hazards and has recently been replaced, if possible, with 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 bei Verwendung der Kunstfasern sehr hohe Anforderungen gestellt.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) make very high demands when using synthetic fibers.
Bei der Dichtungsplattenherstellung auf dem Kalander haben neben den bereits erwähnten Maschineneigenschaften noch zahlreiche Details Einfluß, so z.B.:
- die Temperaturhöhe der Heizwalze. Sie ist entscheidend für die Vulkanisationsleistung und damit für die Aufbaugeschwindigkeit der Platte.
- die Temperaturgenauigkeit. Sie hat Bedeutung in Bezug auf die Gleichmäßigkeit der Ausvulkanisation.
- die Arbeitsgeschwindigkeit der Walzen. Sie hängt von verschiedenen Parametern, wie z.B. der Haftung der Masse auf der Walzenoberfläche ab und ergibt unter Berücksichtigung der Vulkanisationsgeschwindigkeit die Zahl der Plattenüberrollungen während des Zyklus durch die Anpreßwalze und bestimmt damit die Verdichtung und Qualität der Platte.
- der Druck in den Preßzylinder links/rechts der Anpreßwalze. Er ist wichtig für die Gleichmäßigkeit der Dicke der erzeugten Platte.
- der Linien-Anpreßdruck der Anpreßwalze. Er ist entscheidend wichtig für die Verdichtung der Platte.
- Korrektur der Walzendurchbiegung. Zur Erzielung optimaler Bedingungen wird eine Gegenbiegevorrichtung für die Anpreßwalze angewendet, die entsprechend der jeweiligen Anpreßkraft eingestellt wird.
- die Anpreßkraft. Sie muß je nach der Mischungssorte und der Plattendicke optimiert werden.
- die Geschwindigkeitseinstellung beider einzeln angetriebener Walzen zueinander, die normalerweise genau gleich sein muß, gelegentlich aber eine extrem geringe, aber genaue Friktionseinstellung bedingt.
- die Beschickung der Masse in Bezug auf die Menge und die optimale Verteilung über die Länge des Walzenspaltes, wodurch sich die Gleichmäßigkeit der Plattentoleranz über die Arbeitsbreite ergibt.
- eine Veränderung der Parameter nach Beginn des Plattenaufbaues in Abhängigkeit der zunehmenden Plattendicke, z.B. des Preßdruckes, der Geschwindigkeit mit dickenbedingter Abnahme der Vulkanisationsgeschwindigkeit, Zahl der Überrollungen u.a.m.
- the temperature level of the heating roller. It is decisive for the vulcanization performance and thus for the speed at which the panel builds up.
- the temperature accuracy. It is important with regard to the uniformity of the vulcanization.
- the working speed of the rollers. It depends on various parameters, such as the adhesion of the mass to the roller surface and, taking into account the speed of vulcanization, results in the number of plate rolls during the cycle by the pressure roller and thus determines the compression and quality of the plate.
- the pressure in the press cylinder left / right of the pressure roller. It is important for the uniformity of the thickness of the plate produced.
- the line pressure of the pressure roller. It is of crucial importance for the compression of the plate.
- Correction of roll deflection. To achieve optimal conditions, a counter-bending device for the pressure roller is used, which is adjusted according to the respective pressure force.
- the contact pressure. It must be optimized depending on the type of mixture and the plate thickness.
- the speed setting of both individually driven rollers to each other, which normally has to be exactly the same, but occasionally requires an extremely low but precise friction setting.
- the feeding of the mass in relation to the quantity and the optimal distribution over the length of the nip, which results in the uniformity of the plate tolerance over the working width.
- a change in the parameters after the start of the plate build-up as a function of the increasing plate thickness, for example the pressing pressure, the speed with a decrease in the vulcanization speed due to the thickness, the number of rollovers, etc.
Bei den traditionellen Werkstoffen der Dichtungsplatten, also bei denen mit Asbestfaserverstärkung, genügte zumeist in Bezug auf die Führung dieses komplizierten Arbeitsprozesses die Einstellung und die laufende Korrektur der Produktionsparameter durch den Bedienungsmann, der auch die Beschickung des Kalanders vornahm und aufgrund seiner Erfahrung alle anderen Werte nach Bedarf so gut es ging optimierte.With the traditional materials of the sealing plates, i.e. those with asbestos fiber reinforcement, the adjustment and the continuous correction of the production parameters by the operator, who also loaded the calender and based on his experience, usually sufficed with regard to the management of this complicated work process Need optimized as best as possible.
Aufgrund der Forderung nach asbestfreien Dichtungsplatten und der dadurch bedingten Einführung von hochfesten temperaturbeständigen Kunstfasern ist aber die Verarbeitung der Mischungen sehr viel schwieriger geworden. Insbesondere ist die Auffindung und Einhaltung optimaler Arbeitsparameter vor allem während des Plattenaufbaues teilweise so problematisch geworden, daß nur ganz besonders erfahrene Bedienungsleute noch in der Lage sind, einwandfreie Dichtungsplatten herzustellen. Trotzdem entsteht bei der Plattenherstellung sehr viel Ausschuß, der wirtschaftlich nicht tragbar ist.Due to the requirement for asbestos-free sealing sheets and the consequent introduction of high-strength However, processing the blends has become much more difficult with temperature-resistant synthetic fibers. In particular, finding and maintaining optimal working parameters, especially during plate construction, has become so problematic that only very experienced operators are still able to produce perfect sealing plates. Nevertheless, a lot of rejects arise in the production of panels, which is not economically viable.
Die Anwendung von Prozessoren, wie sie in einem aus der Zeitschrift Kunststoffe 74 (1984, S. 654) bekannt gewordenen rechnergesteuerten Labormeßwalzwerk bekannt geworden ist, verbietet sich wegen der völlig anderen Problematik in der Arbeitsweise der Kalander für die Herstellung von Dichtungsplatten, die sich von dem in der Literaturstelle behandelten Kalander für die Bearbeitung eines durchlaufenden Bandes grundsätzlich unterscheiden. Auch lassen sich Prozessoren nicht einsetzen, die bei der Automatisierung von Kalanderlinien in der Gummiindustrie zur Steuerung der vor dem Kalander und hinter dem Kalander angeordneten Bearbeitungsmaschinen dienen.The use of processors, as has become known in a computer-controlled laboratory measuring roll mill which has become known from the plastics 74 (1984, p. 654), is prohibited because of the completely different problems in the operation of the calenders for the production of sealing plates, which differ from one another fundamentally differentiate the calender treated in the literature for the processing of a continuous belt. It is also not possible to use processors which are used in the automation of calender lines in the rubber industry to control the processing machines arranged in front of the calender and behind the calender.
Die Erfindung vermeidet die Nachteile des Standes der Technik. Der Erfindung liegt die Aufgabe zugrunde, Voraussetzungen für die einwandfreie Steuerung des Herstellungsverfahrens von kunstfaserverstärkten Dichtungsplatten zu schaffen, bei dem eine stets gleichbleibende hohe Qualität der erzeugten Dichtungsplatten erzielt wird.The invention avoids the disadvantages of the prior art. The invention has for its object to provide conditions for the proper control of the manufacturing process of synthetic fiber reinforced gasket sheets, in which a consistently high quality of the gasket sheets produced is achieved.
Die Erfindung erreicht dieses dadurch, daß die bisher generell übliche Maschinen- und Prozeßsteuerung durch den Bedienungsmann verlassen wird und auf eine automatische Prozeßführung übergegangen wird.The invention achieves this by leaving the previously generally common machine and process control by the operator and an automatic one Litigation is transferred.
Die Erfindung besteht in der Verwendung eines Prozessors, an dessen Eingänge
- die Drehgeschwindigkeitsgeber und/oder Umdrehungszähler
- die Plattendickemeßgeber
- die Motordrehgeschwindigkeitsregler
- die Andrückkrafterzeuger
- Motorendrehzahlen in Abhängigkeit von der Zeit
- Motorendrehzahlen in Abhängigkeit ausgeführter Umdrehungen
- Motorendrehzahlen in Abhängigkeit von der Plattendicke,
wobei den Schaltkreisen der Plattendickenmessung und/oder Messung der Anzahl der Umdrehungen die Schaltkreise der Drehzahlverstellung, Friktionsverstellung, Andruckverstellung rechts/links nachgeschaltet sind.
- the speed encoder and / or revolution counter
- the plate thickness gauges
- the engine speed controller
- the pressure force generator
- Engine speeds as a function of time
- Engine speeds depending on the number of revolutions performed
- Motor speeds depending on the plate thickness,
the circuits of the plate thickness measurement and / or measurement of the number of revolutions being followed by the circuits of the speed adjustment, friction adjustment, pressure adjustment right / left.
Mit dieser Vorrichtung zur Steuerung des Kalanders wird die Abhängigkeit von der Plattenart, deren Mischungsaufbau und der vorgesehenen Plattendicke sowie die Zahl der für ein optimales Ergebnis erforderlichen Überrollungen ein Prozeßführungsprogramm entwickelt, welches sich nach zuvor theoretisch oder praktisch ermittelten optimalen Werten ausrichtet und folgende Parameter einbezieht:
- Startbedingung bei Beginn der Beschickung,
- zunehmende Plattendicke bis zum Sollwert der fertigen Platte,
- Walzentemperaturen der Heizwalze und der gekühlten Preßwalze,
- Zahl der Überrollungen (Heiz-walzen um drekungen) im Arbeitszyklus,
- Arbeitsgeschwindigkeit des Kalanders beim Start und Veränderung derselben mit zunehmender Plattendicke,
- Gleichlaufeinstellung der beiden Walzen bzw. optimale (extrem geringe) Friktionseinstellung in Abhängigkeit von Mischung, zunehmender Plattendicke und Arbeitstemperatur,
- Preßkraft der gekühlten Andrückwalze ebenfalls als Funktion von Mischung, Plattendicke und Arbeitstemperatur,
- Gegenbiegung der Andrückwalze entsprechend der eingestellten Preßkraft zwecks Erzielung gleichmäßiger Plattendicke über die Arbeitsbreite gesehen.
- Start condition at the start of loading,
- increasing plate thickness up to the target value of the finished plate,
- Roll temperatures of the heating roll and the cooled press roll,
- Number of rollovers (heating rolls by turns) in the work cycle,
- Working speed of the calender when starting and changing it with increasing plate thickness,
- Synchronization setting of the two rollers or optimal (extremely low) friction setting depending on the mixture, increasing plate thickness and working temperature,
- Pressing force of the cooled pressure roller also as a function of mixture, plate thickness and working temperature,
- Counter-bending of the pressure roller according to the set pressing force in order to achieve uniform plate thickness over the working width.
Dabei wird erfindungsgemäß ein Computerprogramm erarbeitet, welches alle erwähnten Parameter berücksichtigt und dadurch der Bedienungsperson ermöglicht, sich auf die Überwachung der Anlage und deren optimale Beschickung mit Masse zu konzentrieren und den sonstigen gesamten Fertigungsprozeß lediglich zu überwachen.According to the invention, a computer program is developed which takes into account all the parameters mentioned and thereby enables the operator to concentrate on the monitoring of the system and its optimal loading with mass and merely to monitor the other entire manufacturing process.
Mit Hilfe bestimmter Programmschritte kann dabei erreicht werden, daß bestimmte Arbeitsschritte, die ein Bedienungsmann nur nacheinander ausführen kann, durch die vorgesehenen Schaltungen bei Bedarf zeitlich optimiert, also gleichzeitig ausgeführt werden können.With the help of certain program steps it can be achieved that certain work steps that an operator can only execute one after the other, can be optimized in terms of time if necessary, that is, can be executed simultaneously, using the circuits provided.
Wenn der Kalander mit Gegenbiegekrafterzeugern ausgestattet ist, ist es vorteilhaft, wenn an den Ausgang des Prozessors eine Steuerungsvorrichtung für die Gegenbiegevorrichtung angeschlossen ist und wenn im Prozessor Schaltkreise für Funktionsverknüpfungen Gegenbiegekrafterzeugung in Abhängigkeit von der Plattendicke vorgesehen sind.If the calender is equipped with counter-bending force generators, it is advantageous if a control device for the counter-bending device is connected to the output of the processor and if circuits for function links are provided in the processor for generating counter-bending force depending on the plate thickness.
Wenn insbesondere beim Aufbau dickerer Dichtungsplatten eine Temperatursteuerung zum Einsatz kommt, ist es zweckmäßig, wenn an die Eingänge des Prozessors Temperaturgeber für das Heizmittel und/oder Kühlmittel und an die Ausgänge des Prozessors die Heizungssteuerung der Heizwalze und/oder die Kühlungssteuerung der Andrückwalze angeschlossen sind und wenn der Prozessor Schaltkreise für Funktionsverknüpfungen Heizmittel- und/oder Kühlmitteltemperatur in Abhängigkeit von der Zeit und/oder ausgeführter Umdrehungen und/oder Plattendicke aufweist.If a temperature control is used in particular when building thicker sealing plates, it is expedient if temperature sensors for the heating medium and / or coolant are connected to the inputs of the processor and the heating control of the heating roller and / or the cooling control of the pressure roller are connected to the outputs of the processor and if the processor has circuits for function combinations of heating medium and / or coolant temperature as a function of the time and / or revolutions carried out and / or plate thickness.
Um die Arbeit dieser Anlage weiter zu automatisieren kann es vorteilhaft sein, daß an die Ausgänge des Prozessors Betätigungen für eine Lösungsmittelzufuhrvorrichtung und/oder eine Materialzufuhrvorrichtung und/oder eine Vorrichtung zur Materialverteilung angeschlossen sind. In diesem Falle ist es zweckmäßig, wenn der Prozessor Schaltkreise für die Lösungsmittelzufuhr in Abhängigkeit von der Zeit und/oder Plattendicke, und/oder der Plattendickenwuchsgeschwindigkeit und/oder der Materialzufuhr in Abhängigkeit von der Plattendikkenwuchsgeschwindigkeit und/oder der Materialverteilung in Abhängigkeit von der Zeit und/oder der Plattenwuchsgeschwindigkeit und/oder der Drehgeschwindigkeitsdifferenz der Walzen in Abhängigkeit von der Zeit und/oder der Plattendicke und/oder der Drehgeschwindigkeit und/oder der Andruckkraft entsprechend der Plattendicke rechts /links aufweist.In order to further automate the work of this system, it can be advantageous that actuations for a solvent supply device and / or a material supply device and / or a device for material distribution are connected to the outputs of the processor. In this case, it is useful if the processor circuits for the solvent supply depending on the time and / or plate thickness, and / or the plate thickness growth rate and / or the material supply depending on the plate thickness growth speed and / or the material distribution depending on the time and / or the plate growth speed and / or the rotational speed difference of the rolls depending on the time and / or the plate thickness and / or the rotational speed and / or the pressing force corresponding to the plate thickness right / left.
Vorteilhaft ist es weiterhin, wenn den Schaltkreisen für die Funktionsverknüpfungen weitere Schaltkreise zur Steuerung dieser Schaltkreise für die Funktionsverknüpfungen in Abhängigkeit von zu verarbeitenden Materialmischungen, Materialbestandteilen und/oder dem Lösungsmittelgehalt vor- oder nach- oder parallelgeschaltet sind.It is also advantageous if the circuits for the function combinations are connected upstream or downstream or in parallel with further circuits for controlling these circuits for the function combinations depending on material mixtures, material components and / or the solvent content to be processed.
Vorteilhaft für die reproduzierbare Steuerug der Ausführung des Herstellungsprozeßes ist es, wenn ein Eingang und/oder ein Ausgang des Prozessors und deren Steuerung (Software) mit einem Datenspeicher verbunden ist. Mithilfe dieses Speichers kann vorteilhafterweise die Programmierung des Prozessors dadurch erfolgen, daß im Datenspeicher bei einer bestimmten Plattentype empirisch gefundene Arbeitseinstellungen aufgezeichnet sind, die als Programm für die Wiederholung und/oder Optimierung des Produktionsprozesses dienen.It is advantageous for the reproducible control of the execution of the manufacturing process if an input and / or an output of the processor and its control (software) is connected to a data memory. With the aid of this memory, the programming of the processor can advantageously take place in that empirically found working settings are recorded in the data memory for a specific disk type, which serve as a program for the repetition and / or optimization of the production process.
Weiter ist es vorteilhaft, wenn der Prozessor an Temperaturfühler für die Oberflächentemperatur der in der Herstellung befindlichen Platte angeschlossen ist und ein Schaltkreis für die Funktionsverknüpfung der Prozeßvorgaben in Abhängigkeit von der Oberflächentemperatur vorgesehen ist.It is also advantageous if the processor has temperature sensors is connected for the surface temperature of the plate being manufactured and a circuit is provided for linking the functions of the process instructions as a function of the surface temperature.
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 Frontansicht,
- Fig. 2
- eine Stirnseitenansicht des Kalanders.
- Fig. 1
- a schematic representation of the calender in front 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. Ein Gleichstrommotor 13 treibt die Welle 10 der Heizwalze 2 und ein Gleichstrommotor 12 die Welle 11 der Andrückwalze 3 an. Die Welle 11 der Andrückwalze 3 ist verschiebbar im Kalanderständer 1 gelagert, durch eine mittels der hydraulischen Preßeinrichtung 24 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.The
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 4 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 5 des Prozessors 9 angeschlossen ist.The
Der dritte Eingang 6 des Prozessors 9 ist an den Geber 15 angeschlossen.The
Der Prozessor hat zwei Ausgänge 7 und 8, von denen der eine Ausgang 7 an die Steuervorrichtung 21 für den Motor 12 und der andere Ausgang 8 an die Steuervorrichtung 20 für den Motor 13 angeschlossen ist.The processor has two
Es sind weitere Taster 22 für das Abtasten der Oberfläche der auf der Heizwalze 2 aufgebauten Platte 14 zum Zwecke der Messung der Dicke der Platte 14 vorgesehen, die an einen weiteren Eingang 23 des Prozessors 9 angeschlossen sind.There are
Von der Heizvorrichtung 25 führen Rohre 26 in die Heizwalze 2. In diesen Rohren ist ein Temperaturgeber 27 angeordnet, dessen Ausgangssignale in den Eingang 28 des Prozessors 9 eingeführt werden. Entsprechend ist die Andrückwalze 3 über Rohre 29 mit der Kühlvorrichtung 30 verbunden. Ein in den Rohren 29 angeordneter Temperaturgeber 31 ist an den Eingang 32 des Prozessors 9 angeschlossen. Vom Ausgang 33 führt eine Steuerleitung zur Heizvorrichtung 25, vom Ausgang 34 des Prozessors 9 führt eine Steuerleitung zur Kühlvorrichtung 30. Ein weiterer Ausgang 35 des Prozessors 9 führt zur Steuerungsvorrichtung 36 der hydraulischen Preßeinrichtung 24 an der Andrückwalze 3. Vom Ausgang 37 des Prozessors 9 führt eine Steuerungsleitung zur Steuerungsvorrichtung 38 der Gegenbiegevorrichtung 39. Oberhalb des Walzenspaltes ist eine Beschickungsvorrichtung 40 angeordnet, die an den Ausgang 41 des Prozessors 9 angeschlossen ist. Neben der Beschickungsvorrichtung 40 ist eine Vorrichtung für die Lösungsmittelzufuhr 42 vorgesehen, deren Lösungsmittelzufluß durch die Steuerungsvorrichtung 43 gesteuert wird, die an den Ausgang 44 des Prozessors angeschlossen ist. Weiter ist eine Materialverteilungsvorrichtung 45 vorgesehen, deren Steuerung an den Ausgang 46 des Prozessors angeschlossen ist. Verschiedene Speicher 47, in denen Rezepturen und/oder Verfahrensweisen aufgezeichnet sind, sind über die Auswahlvorrichtung 48 an den Eingang 49 des Prozessors 9 angeschlossen. Für die Aufzeichnung von Programmen gemäß einer manuell durchgeführten Steuerung ist der Ausgang 50 des Prozessors vorgesehen, der zum Speicher 47 führt.
Claims (12)
- Device for controlling a calender for making sealing sheets (14), which is equipped with a motor-driven heating roll (2) of large diameter and a counter pressure roll (3) of smaller diameter driven by a separate motor, with two sheet thickness measuring pickups (22), two revolutions pickups (17, 19), temperature pickups (27, 31), motor revolutions control devices (20, 21) and contact pressure force producing devices (24), characterised by a processor (9) to the inputs of which are connected- the rotational speed pickups and/or revolutions counters (17, 19)- the sheet thickness measuring pickups (22),and to the outputs of which are connected- the motor rotational speed control devices- the contact pressure force producing devices (24),and which contains circuits for operational linking of- motor revolutions as a function of the time- motor revolutions as a function of completed revolutions- motor revolutions as a function of the sheet thickness,the circuits for adjustment of the revolutions, friction adjustment, contact pressure adjustment on the right-hand/left-hand side being connected after the circuits for measuring the sheet thickness and/or measuring the number of revolutions.
- Device according to claim 1, characterised in that the calender is equipped with counter bending force producing devices (39), in that a control device (38) for the counter bending device (39) is connected to the output of the processor (9), and in that circuits are provided in the processor (9) for operational linking of counter bending force production as a function of the sheet thickness.
- Device according to claim 1, characterised by a processor (9) to the inputs of which are connected temperature pickups (27, 31) for the heating medium and/or the cooling medium, to the outputs of which are connected the heating control (25) of the heating roll (2) and/or the cooling control (30) of the pressure roll (3), and which exhibits circuits for operational linking of heating medium and/or cooling medium temperature as a function of the time and/or revolutions completed and/or sheet thickness.
- Device according to claim 1, characterised in that actuators for- a solvent feeding device (42, 43) and/or- a material feeding device (40) and/or- a device (45) for material spreadingare connected to the outputs of the processor (9).
- Device according to claim 1, characterised in that the processor exhibits circuits for- solvent feeding as a function of the time and/or the sheet thickness and/or the speed of growth of the sheet thickness and/or- material feeding as a function of the speed of growth of the sheet thickness and/or- material spreading as function of the time and/or the speed of growth of the sheet and/or- difference in the rotational speed of the rolls as a function of the time and/or the sheet thickness and/or the rotational speed and/or the contact pressure force according to the sheet thickness on the right-hand/left-hand side.
- Device according to claim 1, characterised in that further circuits are connected in front of or after or in parallel with the circuits for the operational links to control these circuits for the operational links as a function of material mixtures to be processed, material components and/or the solvent content.
- Device according to claim 1, characterised in that one input and/or one output of the processor and their control (software) is connected with a data store.
- Device according to claim 7, characterised in that working settings found empirically with a particular type of sheet are recorded in the data store and serve as a programme for repeating and/or optimising the production process.
- Device according to claim 1, characterised in that the processor is connected to temperature pickups for the surface temperature of the sheet being made and in that a circuit is provided for operational linking of the process parameters as function of the surface temperature.
- Device according to claim 1, characterised by at least one sensor (22) sensing the surface of the heating roll (2) and the sealing sheet (14) being built up on it, a measuring pickup associated with the sensor (22), and a circuit in the processor (9) to the input of which is connected the sensor (22) and to the output of which are connected controls (20, 21) to control the driving motors (12, 13) and which exhibits a set value/actual value comparison circuit in which the first measurement is always stored as a zero value.
- Device according to claim 10, characterised by a store for the position of the pickup (17) dependent on the angle of rotation of the heating roll during the first revolution of the heating roll (2).
- Device according to claim 1 with a counter bending device on the calender, characterised in that a further sensor (22A) is provided for the middle area of the heating roll (2) and is connected to the circuit of the processor (9) controlling the counter bending device (39).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4011426 | 1990-04-09 | ||
| DE4011426 | 1990-04-09 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0451495A2 EP0451495A2 (en) | 1991-10-16 |
| EP0451495A3 EP0451495A3 (en) | 1992-03-11 |
| EP0451495B1 true EP0451495B1 (en) | 1994-11-17 |
Family
ID=6404054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91103202A Expired - Lifetime EP0451495B1 (en) | 1990-04-09 | 1991-03-04 | Control apparatus for a calender for making sealing sheets |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0451495B1 (en) |
| DE (1) | DE59103518D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106313402A (en) * | 2016-07-28 | 2017-01-11 | 江苏锦竹工业用布有限公司 | Control device of nylon cord calendering procedure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4222241C2 (en) * | 1992-07-07 | 1994-08-25 | Troester Maschf Paul | Sealing plate calender |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE625193A (en) * | 1962-01-19 | |||
| FR1376499A (en) * | 1963-03-19 | 1964-10-31 | Improvements in the clamping of rolls of crushers and other roll machines | |
| JPS58141807A (en) * | 1982-02-15 | 1983-08-23 | Mitsubishi Electric Corp | Equipment for automatically controlling sheet thickness |
| SU1282090A1 (en) * | 1984-09-12 | 1987-01-07 | Предприятие П/Я Г-4849 | System for controlling geometric sizes of thermoplastic sheets |
| US4810179A (en) * | 1988-01-27 | 1989-03-07 | Marshall & Williams Company | Force indicator for casting machines |
-
1991
- 1991-03-04 DE DE59103518T patent/DE59103518D1/en not_active Expired - Fee Related
- 1991-03-04 EP EP91103202A patent/EP0451495B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106313402A (en) * | 2016-07-28 | 2017-01-11 | 江苏锦竹工业用布有限公司 | Control device of nylon cord calendering procedure |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59103518D1 (en) | 1994-12-22 |
| EP0451495A2 (en) | 1991-10-16 |
| EP0451495A3 (en) | 1992-03-11 |
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