[go: up one dir, main page]

WO2013007250A1 - Method and device for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mix components. - Google Patents

Method and device for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mix components. Download PDF

Info

Publication number
WO2013007250A1
WO2013007250A1 PCT/DE2012/100198 DE2012100198W WO2013007250A1 WO 2013007250 A1 WO2013007250 A1 WO 2013007250A1 DE 2012100198 W DE2012100198 W DE 2012100198W WO 2013007250 A1 WO2013007250 A1 WO 2013007250A1
Authority
WO
WIPO (PCT)
Prior art keywords
detected
extruded profile
coordinates
extruded
boundary layers
Prior art date
Application number
PCT/DE2012/100198
Other languages
German (de)
French (fr)
Inventor
Bernd Pielsticker
Original Assignee
Troester Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Troester Gmbh & Co. Kg filed Critical Troester Gmbh & Co. Kg
Priority to DE112012002884.8T priority Critical patent/DE112012002884A5/en
Publication of WO2013007250A1 publication Critical patent/WO2013007250A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/03—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring coordinates of points
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
    • G01B15/04—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring contours or curvatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92152—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92295—Errors or malfunctioning, e.g. for quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92447—Moulded article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/8422—Investigating thin films, e.g. matrix isolation method

Definitions

  • the invention relates to a method for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mixture components, in particular rubber mixtures, which lie against one another along boundary layers, wherein coordinates of the strand are detected by means of a non-contact measuring method. Furthermore, the invention relates to a method for determining a coordinate or a quality feature of a point on an extruded from an extruder tool strand and an apparatus for performing the method.
  • the extrusion tool is also referred to as the extrusion head and the shaping opening synonymous as a nozzle.
  • the strand is brought after exiting the extrusion die in a calibration table in the shape of the desired profile and kept in this form until it is solidified. This prevents deformation, in particular collapse of the strand.
  • an extrusion tool for a new profile in particular for complex profiles consisting of several mixture components, for example rubber mixtures
  • such a newly designed extrusion tool is not yet suitable for use in production, but is iteratively improved by means of test runs until it delivers a strand quality which is useful for production.
  • EP 1 902 828 A1 relates to such a method for determining a coordinate of a point on a strand issuing from an extrusion die.
  • measuring methods are suitable which detect an object on the basis of the electromagnetic waves emitted or reflected by it, for example optical measuring methods in the visible light range or for the production of thermal images in the infrared range, as well as acoustic measurements by means of ultrasound.
  • DE 100 14 507 A1 relates to a method for producing profiled strips of soft elastic material, such as rubber, on an extrusion line with at least one extruder and a strip trigger, with a the inner space of the extrusion head detecting pressure sensor for detecting the material or machine-related pressure fluctuations within the extruder ,
  • DE 42 03 755 C2 relates to a method for regulating the individual layer thicknesses of a plurality of layers of a multilayered plastic web to be produced by coextrusion.
  • a uniform thickness distribution and layer thickness of the individual melt streams and layers should be achieved by determining the layer thicknesses and evaluating the measured data obtained and using them to control the flow cross sections for the individual melt streams immediately prior to merging the melt streams into one strand ,
  • the invention has for its object to avoid the disadvantages of the prior art and to improve the aforementioned method for producing an extruded, non-rotationally symmetrical extruded profile of several mixture components significantly. Furthermore, a suitably adapted device for carrying out the method is to be created.
  • the first object is achieved by a method according to the features of claim 1.
  • the further embodiment of the invention can be found in the dependent claims.
  • a method in which the coordinates of the boundary layers of at least individual mixture components of the extruded profile are detected by means of a measuring method penetrating the extruded profile, so that it becomes possible for the first time to detect the coordinates of individual constituents, in particular of individual profile components, thus providing a layer thickness - To achieve boundary layer distribution according to the setpoints.
  • a measuring method penetrating the extruded profile
  • the detection of the boundary layers allows rapid adaptation by means of correspondingly short control circuits, so that the quality of the extruded profiles produced in this way is substantially improved.
  • the measurement for determining the coordinates of the mixture components is carried out for this purpose within the extrusion line after the exit of the extruded profile from the extrusion die.
  • the position and / or the orientation of at least individual mixture components or boundary layers relative to one another and / or relative to fixed reference points are preferably detected from the detected coordinates in order to reliably detect the dimensional accuracy on the one hand and the relative arrangement of the mixture components on the other hand.
  • a temporal change of the measured values is detected, in particular thus the time course of the deviations.
  • known measuring methods permeating the extruded profile are suitable for carrying out the method. If the measurement is carried out by means of electromagnetic radiation in the transmission and / or reflection method, not only the edge layers, but preferably the entire boundary layers can be detected in their topography. For this purpose, methods which are based on the measurement by means of an X-ray method are preferably suitable.
  • the use of the measured values is not limited to documentation purposes. Rather, the acquired measured values can be used as a signal of a control loop for controlling the production process of the extruded profile. For this purpose, the detected measured values are compared with setpoint values and, depending on the result of this comparison, a manipulated variable for controlling adjustable extruder components is generated.
  • the extruder rpm is regulated or the tool contour is adjusted on the basis of the measured values recorded in order, for example, to change the contour of the extrusion tools as far as possible.
  • empirical values for optimizing tool contours are derived on the basis of the recorded measured values. These can, for example, be incorporated into an expert system for the design of tool contours and therefore also be used independently of the concrete extrusion device in the manufacture of subsequent devices in an advantageous manner, for example as a calculation tool of a software for the generation of CAD / CAM data.
  • the basis for a measured value acquisition is provided, which can also be used for existing extruded profiles and thus independent of the production process a fast and accurate quality inspection allowed.
  • one or more, preferably in each case different, contrast media are admixed to one or more of the mixture components, the distinctness by means of the penetrating measuring method is substantially promoted.
  • the boundary layers are thus clearly emphasized.
  • the coordinates of the outer contour of the extruded profile are detected by means of a further, non-contact method, in particular a laser measuring method.
  • the thus detected signals of the two measuring methods which preferably detect measuring signals at the same time, can be set in relation to each other.
  • positions or extents can be derived by means of the measured values determined by the second measuring method.
  • the attenuation values of the individual mixture components are used as input for the evaluation, in which the coordinates of the second measurement method are included.
  • the boundary layers can be detected much better, which emerge clearly recognizable as a discontinuous change in the attenuation values.
  • the second object is achieved with a measuring device for detecting coordinates of the boundary layers of at least individual mixture components of an extruded profile by means of electromagnetic radiation, in particular X-ray radiation.
  • a measuring device for detecting coordinates of the boundary layers of at least individual mixture components of an extruded profile by means of electromagnetic radiation, in particular X-ray radiation.
  • electromagnetic radiation in particular X-ray radiation.
  • This can be easily integrated into existing production facilities or used as a mobile device, if necessary.
  • the signal transmission can also be wireless, so as to be able to retrofit existing systems without any problems.
  • a temporal development of the coordinate is measured.
  • the local speed or a spatial speed profile can be measured over a plurality of points.
  • Such a measurement of the speed can be carried out in particular in such a way that in each case one coordinate of a point is measured at two successive times in a short time interval and the speed of the point is determined by the distance between the coordinates and the time interval. Again, the accuracy of the measurement can be improved by increasing the measured times.
  • a temperature of the point it is particularly preferable to measure a temperature of the point.
  • Knowledge of the temperature of the strand, in particular The local temperatures in the cut surface allows the identification of procedural weaknesses in the production of the profile.
  • color distributions and geometrical conformity can be measured at individual points of the strand, in spatial profiles and in their temporal progressions with appropriate measuring devices.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a method and to a device for producing an extruded, non-rotationally symmetrical extruded profile from several mix components that lie against one another along boundary layers. In order to substantially improve the production of the extruded profile, the coordinates of the boundary layers of at least individual mix components of the extruded profile are detected by means of a measuring method penetrating the extruded profile. As a result, it is possible for the first time to detect the coordinates of individual constituents, in particular individual profile components, in order to achieve a layer thickness distribution and boundary layer distribution corresponding to the desired values. By using a measuring method penetrating the extruded profile, it is also possible to determine coordinates of boundary layers that are completely enclosed by further components.

Description

Verfahren sowie Vorrichtung zur Herstellung eines extrudierten, nicht rotationssymmetrischen Strangprofils aus mehreren Mischungskomponenten  Method and device for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mixture components
Die Erfindung betrifft ein Verfahren zur Herstellung eines extrudierten, nicht rotationssymmetrischen Strangprofils aus mehreren Mischungskomponenten, insbesondere Kautschukmischungen, die entlang von Grenzschichten gegeneinander liegen, wobei Koordinaten des Strangs mittels eines berührungslosen Messverfahrens erfasst werden. Weiterhin betrifft die Erfindung ein Verfahren zur Bestimmung einer Koordinate oder eines Qualitätsmerkmals eines Punkts an einem aus einem Extrusionswerkzeug dringenden Strang sowie eine Vorrichtung zur Durchführung des Verfahrens. The invention relates to a method for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mixture components, in particular rubber mixtures, which lie against one another along boundary layers, wherein coordinates of the strand are detected by means of a non-contact measuring method. Furthermore, the invention relates to a method for determining a coordinate or a quality feature of a point on an extruded from an extruder tool strand and an apparatus for performing the method.
In Extrusionsvorrichtungen werden feste bis dickflüssige Massen unter hohem Druck und bei hoher Temperatur, je nach extrudiertem Material unter bis zu 700 bar und bei bis zu 300 °C gleichmäßig aus einer formgebenden Öffnung eines Extrusionswerkzeugs herausgepresst. In extrusion devices, solid to viscous masses are pressed out under high pressure and at high temperature, depending on the extruded material under up to 700 bar and at up to 300 ° C evenly from a forming opening of an extrusion die.
Das Extrusionswerkzeug wird auch als Extrusionskopf und die formgebende Öffnung auch synonym als Düse bezeichnet. Bei der Extrusion von insbesondere Hohlsträngen und Rohren wird der Strang nach dem Austritt aus dem Extrusionswerkzeug in einem Kalibriertisch in die Form des gewünschten Profils gebracht und solange in dieser Form gehalten, bis er erstarrt ist. So wird ein Verformen, insbesondere ein Zusammenfallen des Strangs vermieden. The extrusion tool is also referred to as the extrusion head and the shaping opening synonymous as a nozzle. In the extrusion of particular hollow strands and pipes, the strand is brought after exiting the extrusion die in a calibration table in the shape of the desired profile and kept in this form until it is solidified. This prevents deformation, in particular collapse of the strand.
Zur Herstellung eines Extrusionswerkzeugs für ein neues Profil, insbesondere für komplexe Profile aus mehreren Mischungskomponenten, beispielsweise Kautschukmischungen, wird hinsichtlich der Steuerung des Extrusionswerkzeugs ebenso wie bei der Herstellung der Werkzeugkomponenten im Wesentlichen auf Erfahrungswerte zurückgegriffen. Ein solches neu konstruiertes Extrusionswerkzeug ist in aller Regel noch nicht für den Einsatz in der Produktion geeignet, sondern wird anhand von Testläufen iterativ verbessert, bis es eine für die Produktion brauchbare Strangqualität liefert. Zur Bestimmung der Qualität eines aus dem Extrusionswerkzeug dringenden Strangs ist es bekannt, unmittelbar am Extrusionswerkzeug eine Schubprobe in definierter Länge manuell abzutrennen und diese nach dem Abkühlen mittels Messschieber an zuvor bestimmten Stellen räumlich zu vermessen. Anhand der geometrischen Informationen erkennt der erfahrene Konstrukteur, an welchen Stellen zu viel oder zu wenig Schmelze aus der formgebenden Öffnung des neuen Extrusionswerkzeugs dringt und erweitert die formgebende Öffnung oder die zu dieser führenden Kanäle des Extrusionswerkzeugs, um die gewünschte Ausbildung des Strangs zu erzielen. For the production of an extrusion tool for a new profile, in particular for complex profiles consisting of several mixture components, for example rubber mixtures, reference is essentially made to empirical values with regard to the control of the extrusion tool as well as during the production of the tool components. As a rule, such a newly designed extrusion tool is not yet suitable for use in production, but is iteratively improved by means of test runs until it delivers a strand quality which is useful for production. In order to determine the quality of a strand extruding from the extrusion die, it is known to manually separate a shear sample of defined length directly on the extrusion die and spatially measure it after cooling by means of calipers at previously determined locations. Based on the geometric information, the skilled designer recognizes where too much or too little melt from the shaping orifice of the new extrusion tool penetrates and expands the forming orifice or channels of the extrusion die to achieve the desired formation of the strand.
Die EP 1 902 828 A1 bezieht sich auf ein solches Verfahren zur Bestimmung einer Koordinate eines Punkts an einem aus einem Extrusionswerkzeug dringenden Strang. Um Fehlermöglichkeiten bei der Bestimmung einer Koordinate an einem extrudierten Strang zu vermindern, wird vorgeschlagen, die Koordinate unmittelbar nach dem Abtrennen der Schubprobe berührungslos an dem weiter aus dem Extrusionswerkzeug dringenden Strang zu messen. Hierzu eignen sich Messverfahren, die ein Objekt anhand der von diesem abgestrahlten oder reflektierten elektromagnetischen Wellen erfassen, also zum Beispiel optische Messverfahren im Bereich des sichtbaren Lichts oder zur Erstellung von Wärmebildern im infraroten Bereich, sowie akustische Messungen mittels Ultraschall. EP 1 902 828 A1 relates to such a method for determining a coordinate of a point on a strand issuing from an extrusion die. In order to reduce the possibility of errors in the determination of a coordinate on an extruded strand, it is proposed to measure the coordinate immediately after the separation of the shear sample without contact on the further extruded from the extrusion die strand. For this purpose, measuring methods are suitable which detect an object on the basis of the electromagnetic waves emitted or reflected by it, for example optical measuring methods in the visible light range or for the production of thermal images in the infrared range, as well as acoustic measurements by means of ultrasound.
Zunehmende Qualitätsanforderungen der Anlagenbetreiber an Genauigkeit und Gleichförmigkeit der extrudierten Profile verlangen ein schnelles und unmittelbares Ausgleichen von Störgrößen im Extrusionsprozess. Solche Störgrößen können maschinen- oder materialbedingt sein. Diese führen zu Ausstoßschwankungen ("Pulsation") am Extruder, die wiederum Dimensions- und Gewichtsschwankungen am Extrudat, das heißt dem Profilstreifen, zur Folge haben. Increasing quality requirements of the plant operators regarding the accuracy and uniformity of the extruded profiles require a fast and immediate compensation of disturbances in the extrusion process. Such disturbances may be due to machine or material. These lead to ejection fluctuations ("pulsation") at the extruder, which in turn result in dimensional and weight fluctuations on the extrudate, ie the profile strip.
Insbesondere bei den Naturkautschuksorten mit ihren von Sorte, Provenienz und Wachstumseinflüssen abhängigen, sehr starken Inhomogenitäten ist mit erheblichen Verarbeitungsschwankungen zu rechnen. Diese können zwar in gewissem Umfang beim Mischvorgang, vgl. z. B. DE 33 20 203 A1 , durch richtige Aufbereitung verringert, jedoch nicht gänzlich vermieden werden. Auch beim Extrudiervorgang kann durch zusätzliche Scherung des Materials eine weitere Vergleichmäßigung erreicht werden, wobei jedoch auch hierbei verfahrenstechnische Grenzen, z. B. durch die maximal zulässige Materialtemperatur, gegeben sind. Die DE 100 14 507 A1 betrifft ein Verfahren zum Herstellen von Profilstreifen aus weichelastischem Material, wie Kautschuk, auf einer Extrusionsanlage mit mindestens einem Extruder und einem Streifenabzug, mit einem den Innenraum des Extrusionskopfs erfassenden Druckfühler zur Erfassung der material- oder maschinenbedingten Druckschwankungen innerhalb des Extruders. Particularly in the case of natural rubber grades with their very inhomogeneities, which depend on variety, provenance and growth influences, considerable fluctuations in processing are to be expected. Although these can to some extent during the mixing process, cf. z. B. DE 33 20 203 A1, reduced by correct treatment, but not completely avoided. Also in the extrusion process can be achieved by additional shearing of the material, a further homogenization, but also here procedural limits, eg. B. by the maximum permissible material temperature, are given. DE 100 14 507 A1 relates to a method for producing profiled strips of soft elastic material, such as rubber, on an extrusion line with at least one extruder and a strip trigger, with a the inner space of the extrusion head detecting pressure sensor for detecting the material or machine-related pressure fluctuations within the extruder ,
Aus der DE 42 35 163 A1 ist es auch bekannt, bei der Extrusion von Kunststoff röhren entstehende Wanddicken- oder Durchmesserabweichungen mittels Ultraschallsensoren zu erfassen. Die hierzu eingesetzte Messeinrichtung ist in einen Regelkreis des Extruders mit einer einstellbaren Extruderdüse eingebunden. From DE 42 35 163 A1 it is also known in the extrusion of plastic pipes resulting wall thickness or diameter deviations to detect by means of ultrasonic sensors. The measuring device used for this purpose is integrated into a control loop of the extruder with an adjustable extruder die.
Die DE 42 03 755 C2 bezieht sich auf ein Verfahren zum Regeln der einzelnen Schichtdicken von mehreren Schichten einer mehrschichtigen, durch Koextrusion herzustellenden Kunststoffbahn. Bei der Herstellung solcher mehrschichtigen Kunststoffbahnen soll eine gleichmäßige Dickenverteilung und Schichtdicke der einzelnen Schmelzeströme und Schichten dadurch erreicht werden, dass die Schichtdicken ermittelt und die erhaltenen Messdaten ausgewertet und zum Regeln der Strömungsquerschnitte für die einzelnen Schmelzeströme unmittelbar vor dem Zusammenführen der Schmelzeströme zu einem Strang verwendet werden. DE 42 03 755 C2 relates to a method for regulating the individual layer thicknesses of a plurality of layers of a multilayered plastic web to be produced by coextrusion. In the production of such multilayer plastic webs, a uniform thickness distribution and layer thickness of the individual melt streams and layers should be achieved by determining the layer thicknesses and evaluating the measured data obtained and using them to control the flow cross sections for the individual melt streams immediately prior to merging the melt streams into one strand ,
Aus der DE 39 41 1 20 C2 ist es bekannt, den Durchhang des Extrudats durch reflektierte elektromagnetische Wellen, Schallwellen oder kapazitiv zu bestimmen. Dabei gelangen die elektromagnetischen bzw. Schallwellen von einem Sender auf den durchhängenden Extrudatstreifen, werden dort reflektiert und in einem Empfänger in ein elektrisches Signal zur Steuerung der Abzugsgeschwindigkeit umgesetzt. Das Empfangssignal ist umgekehrt proportional zum Abstand zwischen Empfänger und Messobjekt und damit - bei feststehendem Sender und Empfänger - abhängig vom Durchhang des Streifens. Die Änderung des Signals wird elektronisch ausgewertet und als Steuergröße zur Regelung der Abzugsgeschwindigkeit herangezogen. From DE 39 41 1 20 C2 it is known to determine the sag of the extrudate by reflected electromagnetic waves, sound waves or capacitive. The electromagnetic or sound waves pass from a transmitter to the sagging extrudate strip, where they are reflected and converted into a receiver into an electrical signal for controlling the take-off speed. The received signal is inversely proportional to the distance between the receiver and the measurement object and thus - with the transmitter and receiver stationary - depending on the slack of the strip. The change of the signal is electronically evaluated and used as a control variable for controlling the take-off speed.
Der Erfindung liegt die Aufgabe zugrunde, die Nachteile des Stands der Technik zu vermeiden und das eingangs genannte Verfahren zur Herstellung eines extrudierten, nicht rotationssymmetrischen Strangprofils aus mehreren Mischungskomponenten wesentlich zu verbessern. Weiterhin soll eine entsprechend angepasste Vorrichtung zur Durchführung des Verfahrens geschaffen werden. Die erstgenannte Aufgabe wird erfindungsgemäß mit einem Verfahren gemäß den Merkmalen des Anspruchs 1 gelöst. Die weitere Ausgestaltung der Erfindung ist den Unteransprüchen zu entnehmen. The invention has for its object to avoid the disadvantages of the prior art and to improve the aforementioned method for producing an extruded, non-rotationally symmetrical extruded profile of several mixture components significantly. Furthermore, a suitably adapted device for carrying out the method is to be created. The first object is achieved by a method according to the features of claim 1. The further embodiment of the invention can be found in the dependent claims.
Erfindungsgemäß ist also ein Verfahren vorgesehen, bei dem die Koordinaten der Grenzschichten zumindest einzelner Mischungskomponenten des Strangprofils mittels eines das Strangprofil durchdringenden Messverfahrens erfasst werden, sodass es erstmals möglich wird, die Koordinaten einzelner Bestandteile, insbesondere also einzelner Profilkomponenten, zu erfassen, um so eine Schichtdicken- sowie Grenzschichtenverteilung entsprechend den Sollwerten zu erreichen. Indem ein das Strangprofil durchdringendes Messverfahren eingesetzt wird, können auch Koordinaten solcher Grenzschichten bestimmt werden, die vollständig von weiteren Komponenten eingeschlossen sind. Dabei ermöglicht die Erfassung der Grenzschichten eine schnelle Anpassung durch entsprechend kurze Regelkreise, sodass die Qualität der so erzeugten Strangprofile wesentlich verbessert ist. Die Messung zur Bestimmung der Koordinaten der Mischungskomponenten wird hierzu innerhalb der Extrusionslinie nach dem Austritt des Strangprofils aus dem Extrusionswerkzeug durchgeführt. Thus, according to the invention, a method is provided in which the coordinates of the boundary layers of at least individual mixture components of the extruded profile are detected by means of a measuring method penetrating the extruded profile, so that it becomes possible for the first time to detect the coordinates of individual constituents, in particular of individual profile components, thus providing a layer thickness - To achieve boundary layer distribution according to the setpoints. By using an extrusion profile penetrating measurement method, it is also possible to determine coordinates of those boundary layers which are completely enclosed by further components. The detection of the boundary layers allows rapid adaptation by means of correspondingly short control circuits, so that the quality of the extruded profiles produced in this way is substantially improved. The measurement for determining the coordinates of the mixture components is carried out for this purpose within the extrusion line after the exit of the extruded profile from the extrusion die.
Dabei erweist es sich als besonders zweckmäßig, wenn die Koordinaten während des laufenden Produktionsprozesses ohne Unterbrechung des Strangvorschubs erfasst werden, um so den laufenden Produktionsprozess nicht unterbrechen zu müssen. Zudem kann so ein kontinuierliches Messprotokoll zur Dokumentation und Qualitätssicherung erzeugt werden. It proves to be particularly useful if the coordinates are detected during the ongoing production process without interrupting the strand feed, so as not to interrupt the ongoing production process. In addition, a continuous measurement protocol for documentation and quality assurance can be generated.
Vorzugsweise werden aus den erfassten Koordinaten die Position und/oder die Orientierung zumindest einzelner Mischungskomponenten bzw. Grenzschichten relativ zueinander und/oder relativ zu ortsfesten Bezugspunkten erfasst, um so einerseits die Maßhaltigkeit, andererseits aber auch die relative Anordnung der Mischungskomponenten zuverlässig zu erfassen. The position and / or the orientation of at least individual mixture components or boundary layers relative to one another and / or relative to fixed reference points are preferably detected from the detected coordinates in order to reliably detect the dimensional accuracy on the one hand and the relative arrangement of the mixture components on the other hand.
Zu diesem Zweck hat es sich bereits als besonders Erfolg versprechend erwiesen, wenn die Messung kontinuierlich während des Extrusionsprozesses erfolgt, sodass eine lückenlose Erfassung des Strangprofils sichergestellt werden kann. For this purpose, it has already proven to be particularly promising if the measurement is carried out continuously during the extrusion process, so that a complete detection of the extruded profile can be ensured.
Als praxisgerecht erweist es sich dabei, wenn darüber hinaus auch eine zeitliche Veränderung der Messwerte erfasst wird, insbesondere also der zeitliche Verlauf der Abweichungen. Zur Durchführung eignen sich grundsätzlich bekannte, das Strangprofil durchdringende Messverfahren. Wenn die Messung mittels einer elektromagnetischen Strahlung im Transmissions- und/oder Reflexionsverfahren durchgeführt wird, können nicht nur die Randschichten, sondern vorzugsweise die gesamten Grenzschichten in ihrer Topographie erfasst werden. Vorzugsweise eignen sich hierzu Verfahren, die auf der Messung mittels eines Röntgenverfahrens beruhen. In this case, it proves to be practical if, in addition, a temporal change of the measured values is detected, in particular thus the time course of the deviations. In principle, known measuring methods permeating the extruded profile are suitable for carrying out the method. If the measurement is carried out by means of electromagnetic radiation in the transmission and / or reflection method, not only the edge layers, but preferably the entire boundary layers can be detected in their topography. For this purpose, methods which are based on the measurement by means of an X-ray method are preferably suitable.
Dabei ist die Nutzung der Messwerte nicht auf Dokumentationszwecke beschränkt. Vielmehr können die erfassten Messwerte als Signal eines Regelkreises zur Steuerung des Produktionsprozesses des Strangprofils eingesetzt werden. Hierzu werden die erfassten Messwerte mit Sollwerten verglichen und in Abhängigkeit des Ergebnisses dieses Vergleichs wird eine Stellgröße zur Steuerung einstellbarer Extruderkomponenten erzeugt. The use of the measured values is not limited to documentation purposes. Rather, the acquired measured values can be used as a signal of a control loop for controlling the production process of the extruded profile. For this purpose, the detected measured values are compared with setpoint values and, depending on the result of this comparison, a manipulated variable for controlling adjustable extruder components is generated.
Beispielsweise wird so aufgrund der erfassten Messwerte die Extruderdrehzahl geregelt oder die Werkzeugkontur eingestellt, um beispielsweise die Kontur der Extrusionswerkzeuge, soweit möglich, zu verändern. For example, the extruder rpm is regulated or the tool contour is adjusted on the basis of the measured values recorded in order, for example, to change the contour of the extrusion tools as far as possible.
Bei einer anderen, ebenfalls besonders Erfolg versprechenden Variante des Verfahrens werden aufgrund der erfassten Messwerte Erfahrungswerte zur Optimierung von Werkzeugkonturen abgeleitet. Diese können beispielsweise in ein Expertensystem zur Bemessung von Werkzeugkonturen einfließen und daher auch unabhängig von der konkreten Extrusionsvorrichtung bei der Herstellung nachfolgender Vorrichtungen in vorteilhafter Weise, beispielsweise als Berechnungstool einer Software zur Erzeugung von CAD/CAM-Daten, genutzt werden. In another variant of the method, which is also particularly promising, empirical values for optimizing tool contours are derived on the basis of the recorded measured values. These can, for example, be incorporated into an expert system for the design of tool contours and therefore also be used independently of the concrete extrusion device in the manufacture of subsequent devices in an advantageous manner, for example as a calculation tool of a software for the generation of CAD / CAM data.
Weiterhin wird mit einem erfindungsgemäßen Verfahren zur Bestimmung der Koordinaten der Grenzschichten zumindest einzelner Mischungskomponenten des Strangprofils mittels eines das Strangprofil durchdringenden Messverfahrens die Basis für eine Messwerterfassung geschaffen, die beispielsweise auch bei vorhandenen Strangprofilen eingesetzt werden kann und somit unabhängig von dem Produktionsprozess eine schnelle und genaue Qualitätsprüfung gestattet. Furthermore, with a method according to the invention for determining the coordinates of the boundary layers of at least individual mixture components of the extruded profile by means of a measuring method penetrating the extruded profile, the basis for a measured value acquisition is provided, which can also be used for existing extruded profiles and thus independent of the production process a fast and accurate quality inspection allowed.
Wenn entsprechend einer besonders vorteilhaften Ausprägung des Verfahrens einer oder mehrerer der Mischungskomponenten ein oder mehrere, vorzugsweise jeweils unterschiedliche Kontrastmittel beigemischt werden, wird die Unterscheidbarkeit mittels des durchdringenden Messverfahrens wesentlich begünstigt. Insbesondere werden so die Grenzschichten eindeutig hervorgehoben. Weiterhin erweist es sich als besonders praxisnah, wenn zusätzlich zu dem das Strangprofil durchdringenden Messverfahren mittels eines weiteren, berührungslosen Verfahrens, insbesondere eines Lasermessverfahrens, die Koordinaten der Außenkontur des Strangprofils erfasst werden. Die so erfassten Signale der beiden Messverfahren, die vorzugsweise zeitgleich Messsignale erfassen, können in Beziehung zueinander gesetzt werden. Dadurch werden beispielsweise aus solchen Signalen des durchdringenden Messverfahrens, die lediglich zu Verhältnisangaben der erfassten Mischungskomponenten führen, mittels der durch das zweite Messverfahren bestimmten Messwerte Positionen bzw. Erstreckungen ableitbar. Die Dämpfungswerte der einzelnen Mischungskomponenten werden als Eingangsgröße für die Auswertung benutzt, in welche die Koordinaten des zweiten Messverfahrens einbezogen werden. If, according to a particularly advantageous embodiment of the method, one or more, preferably in each case different, contrast media are admixed to one or more of the mixture components, the distinctness by means of the penetrating measuring method is substantially promoted. In particular, the boundary layers are thus clearly emphasized. Furthermore, it proves to be particularly practical if, in addition to the measuring method penetrating the extruded profile, the coordinates of the outer contour of the extruded profile are detected by means of a further, non-contact method, in particular a laser measuring method. The thus detected signals of the two measuring methods, which preferably detect measuring signals at the same time, can be set in relation to each other. As a result, for example, from such signals of the penetrating measuring method, which merely lead to ratios of the detected mixture components, positions or extents can be derived by means of the measured values determined by the second measuring method. The attenuation values of the individual mixture components are used as input for the evaluation, in which the coordinates of the second measurement method are included.
Indem außerdem die Messrichtung von allen Koordinatenachsen des Strangprofils sowie der Mischungskomponenten abweicht, können die Grenzschichten wesentlich besser erfasst werden, die als unstetige Veränderung der Dämpfungswerte klar erkennbar hervortreten. In addition, since the measuring direction deviates from all coordinate axes of the extruded profile and the mixing components, the boundary layers can be detected much better, which emerge clearly recognizable as a discontinuous change in the attenuation values.
Die zweitgenannte Aufgabe wird gelöst mit einer Messeinrichtung zur Erfassung von Koordinaten der Grenzschichten zumindest einzelner Mischungskomponenten eines Strangprofils mittels elektromagnetischer Strahlung, insbesondere Röntgenstrahlung. Diese kann problemlos in bestehende Produktionsanlagen integriert werden oder aber als mobile Einrichtung bedarfsweise eingesetzt werden. Selbstverständlich kann die Signalübertragung auch drahtlos erfolgen, um so vor allem bestehende Anlagen problemlos nachrüsten zu können. The second object is achieved with a measuring device for detecting coordinates of the boundary layers of at least individual mixture components of an extruded profile by means of electromagnetic radiation, in particular X-ray radiation. This can be easily integrated into existing production facilities or used as a mobile device, if necessary. Of course, the signal transmission can also be wireless, so as to be able to retrofit existing systems without any problems.
In einer weiterhin bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens wird eine zeitliche Entwicklung der Koordinate gemessen. So kann die lokale Geschwindigkeit oder ein räumliches Geschwindigkeitsprofil über eine Mehrzahl von Punkten gemessen werden. In a further preferred embodiment of the method according to the invention, a temporal development of the coordinate is measured. Thus, the local speed or a spatial speed profile can be measured over a plurality of points.
Eine solche Messung der Geschwindigkeit kann insbesondere derart erfolgen, dass zu zwei in einem kurzen zeitlichen Abstand aufeinanderfolgenden Zeitpunkten jeweils eine Koordinate eines Punkts gemessen und über den Abstand der Koordinaten und den zeitlichen Abstand die Geschwindigkeit des Punkts bestimmt wird. Auch hier kann die Genauigkeit der Messung durch Erhöhung der gemessenen Zeitpunkte verbessert werden. Such a measurement of the speed can be carried out in particular in such a way that in each case one coordinate of a point is measured at two successive times in a short time interval and the speed of the point is determined by the distance between the coordinates and the time interval. Again, the accuracy of the measurement can be improved by increasing the measured times.
Besonders bevorzugt wird im Rahmen eines erfindungsgemäßen Verfahrens außerdem eine Temperatur des Punkts gemessen. Die Kenntnis der Temperatur des Strangs, insbesondere der lokalen Temperaturen in der Schnittfläche, ermöglicht die Identifikation prozesstechnischer Schwachstellen bei der Herstellung des Profils. In ähnlicher Weise können mit entsprechenden Messeinrichtungen Farbverteilungen und geometrische Formtreue an einzelnen Punkten des Strangs, in räumlichen Profilen und in ihren zeitlichen Verläufen gemessen werden. In addition, within the scope of a method according to the invention, it is particularly preferable to measure a temperature of the point. Knowledge of the temperature of the strand, in particular The local temperatures in the cut surface, allows the identification of procedural weaknesses in the production of the profile. In a similar way, color distributions and geometrical conformity can be measured at individual points of the strand, in spatial profiles and in their temporal progressions with appropriate measuring devices.

Claims

PATE N TAN SP RÜ C H E PATE N TAN SP RU CHE
1. Verfahren zur Herstellung eines extrudierten, nicht rotationssymmetrischen Strangprofils aus mehreren Mischungskomponenten, insbesondere Kautschukmischungen, die entlang von Grenzschichten gegeneinander liegen, wobei Koordinaten des Strangs mittels eines berührungslosen Messverfahrens erfasst werden, dadurch gekennzeichnet, dass die Koordinaten der Grenzschichten zumindest einzelner Mischungskomponenten des Strangprofils mittels eines das nicht rotationssymmetrische Strangprofil durchdringenden Messverfahrens erfasst werden. 1. A method for producing an extruded, non-rotationally symmetrical extruded profile of a plurality of mixture components, in particular rubber mixtures, which are along boundary layers against each other, wherein coordinates of the strand are detected by a non-contact measuring method, characterized in that the coordinates of the boundary layers of at least individual mixture components of the extruded profile means a non-rotationally symmetrical extrusion profile penetrating measuring method can be detected.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Koordinaten während des laufenden Produktionsprozesses ohne Unterbrechung des Strangvorschubs erfasst werden. 2. The method according to claim 1, characterized in that the coordinates are detected during the ongoing production process without interrupting the strand feed.
3. Verfahren nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass aus den erfassten Koordinaten die Position und/oder die Orientierung zumindest einzelner Mischungskomponenten bzw. Grenzschichten relativ zueinander und/oder relativ zu ortsfesten Bezugspunkten erfasst werden. 3. The method according to claims 1 or 2, characterized in that from the detected coordinates, the position and / or orientation of at least individual mixture components or boundary layers relative to each other and / or relative to fixed reference points are detected.
4. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Messung kontinuierlich während des Extrusionsprozesses erfolgt. 4. The method according to at least one of the preceding claims, characterized in that the measurement is carried out continuously during the extrusion process.
5. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine zeitliche Veränderung der Messwerte erfasst wird. 5. The method according to at least one of the preceding claims, characterized in that a temporal change of the measured values is detected.
6. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Messung mittels einer elektromagnetischen Strahlung im Transmissions- und/oder Reflexionsverfahren durchgeführt wird. 6. The method according to at least one of the preceding claims, characterized in that the measurement is carried out by means of electromagnetic radiation in the transmission and / or reflection method.
7. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Messung mittels eines Röntgenverfahrens durchgeführt wird. 7. The method according to at least one of the preceding claims, characterized in that the measurement is carried out by means of an X-ray method.
8. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erfassten Messwerte als Signal eines Regelkreises zur Steuerung des Produktionsprozesses des Strangprofils eingesetzt werden. 8. The method according to at least one of the preceding claims, characterized in that the detected measured values are used as a signal of a control loop for controlling the production process of the extruded profile.
9. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erfassten Messwerte mit Sollwerten verglichen werden und in Abhängigkeit des Ergebnisses dieses Vergleichs eine Stellgröße zur Steuerung einstellbarer Extruderkomponenten erzeugt wird. 9. Method according to claim 1, characterized in that the recorded measured values are compared with setpoint values and, depending on the result of this comparison, a manipulated variable for controlling adjustable extruder components is generated.
10. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass aufgrund der erfassten Messwerte die Extruderdrehzahl geregelt wird. 10. The method according to at least one of the preceding claims, characterized in that based on the detected measured values, the extruder speed is controlled.
1 1. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass aufgrund der erfassten Messwerte die Werkzeugkontur eingestellt wird. 1 1. A method according to at least one of the preceding claims, characterized in that based on the detected measured values, the tool contour is set.
12. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass aufgrund der erfassten Messwerte Erfahrungswerte zur Optimierung von Werkzeugkonturen abgeleitet werden. 12. The method according to claim 1, characterized in that empirical values for optimizing tool contours are derived on the basis of the acquired measured values.
13. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zumindest einer der Mischungskomponenten ein Kontrastmittel beigemischt wird. 13. The method according to at least one of the preceding claims, characterized in that at least one of the mixture components, a contrast agent is admixed.
14. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zusätzlich zu dem das Strangprofil durchdringenden Messverfahren mittels eines weiteren, berührungslosen Verfahrens, insbesondere ein Lasermessverfahren, Koordinaten der Außenkontur des Strangprofils erfasst werden. 14. The method according to at least one of the preceding claims, characterized in that in addition to the extrusion profile penetrating measuring method by means of a further, non-contact method, in particular a laser measuring method, coordinates of the outer contour of the extruded profile are detected.
15. Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Orientierung der Messstrecke von den Koordinatenachsen des Strangprofils oder der Mischungskomponenten abweicht. 15. The method according to at least one of the preceding claims, characterized in that the orientation of the measuring section deviates from the coordinate axes of the extruded profile or the mixture components.
16. Verfahren zur Bestimmung der Koordinaten der Grenzschichten zumindest einzelner Mischungskomponenten eines nicht rotationssymmetrischen Strangprofils mittels eines das Strangprofil durchdringenden Messverfahrens. 16. Method for determining the coordinates of the boundary layers of at least individual mixture components of a non-rotationally symmetrical extruded profile by means of a measuring method penetrating the extruded profile.
17. Verfahren zur Bestimmung eines Qualitätsmerkmals eines Extrusionswerkzeugs nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine Koordinate der Grenzschichten eines aus dem Extrusionswerkzeug dringenden Strangs gemessen wird und unter Verwendung der mindestens einen Koordinate das Qualitätsmerkmal bestimmt wird. 17. A method for determining a quality feature of an extrusion die according to at least one of the preceding claims, characterized in that at least one coordinate of the boundary layers of an extruding from the extrusion die strand is measured and the quality feature is determined using the at least one coordinate.
18. Vorrichtung zum Durchführen des Verfahrens nach zumindest einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Messeinrichtung zur Erfassung von Koordinaten der Grenzschichten zumindest einzelner Mischungskomponenten eines nicht rotationssymmetrischen Strangprofils mittels elektromagnetischer Strahlung, insbesondere Röntgenstrahlung. 18. Device for carrying out the method according to at least one of the preceding claims, characterized by a measuring device for detecting coordinates of the boundary layers of at least individual mixture components of a non-rotationally symmetrical extruded profile by means of electromagnetic radiation, in particular X-radiation.
PCT/DE2012/100198 2011-07-08 2012-07-04 Method and device for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mix components. WO2013007250A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112012002884.8T DE112012002884A5 (en) 2011-07-08 2012-07-04 Method and device for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mixture components

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011051697.2 2011-07-08
DE102011051697 2011-07-08

Publications (1)

Publication Number Publication Date
WO2013007250A1 true WO2013007250A1 (en) 2013-01-17

Family

ID=46598336

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2012/100198 WO2013007250A1 (en) 2011-07-08 2012-07-04 Method and device for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mix components.

Country Status (2)

Country Link
DE (1) DE112012002884A5 (en)
WO (1) WO2013007250A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016102641A1 (en) 2016-02-15 2017-08-17 Troester Gmbh & Co. Kg Method and apparatus for extruding a non-rotationally symmetric strand
WO2020070047A1 (en) * 2018-10-01 2020-04-09 Sikora Ag Method and device for controlling a production system for planar or strand-shaped bodies
DE102019127777A1 (en) * 2019-10-15 2021-04-15 Reifenhäuser GmbH & Co. KG Maschinenfabrik Plant for producing a coextruded multilayer film, device for coextruding a multilayer coextrusion composite and method for coextruding as well as method for operating a related plant and / or device
CN113910561A (en) * 2020-07-10 2022-01-11 恩格尔奥地利有限公司 Method for automatically monitoring at least one production process
RU2774944C1 (en) * 2018-10-01 2022-06-24 Сикора Аг Method and apparatus for controlling a production system for flat or filamentous bodies

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3320203A1 (en) 1983-06-03 1984-12-06 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover METHOD AND SYSTEM FOR FEEDING A LOT OF MATERIAL STRIPS INTO A SINGLE OR MULTIPLE EXTRACTOR
EP0230365A2 (en) * 1986-01-17 1987-07-29 Infrared Engineering Limited Method and apparatus for sensing or determining one or more properties or the identity of a sample
DE4001479C1 (en) * 1990-01-19 1991-02-21 Roehm Gmbh, 6100 Darmstadt, De Thermoplastic material extruding appts. - has two or more extruders to form melt streams, co-extrusion adaptor, with two or more inlets, side channels, co-extrusion nozzle, etc.
US5128077A (en) * 1991-02-12 1992-07-07 General Tire, Inc. Method for producing multicomponent extrusions having controlled component contributions
DE4235163A1 (en) 1992-10-19 1994-04-21 Theysohn Friedrich Fa Device for extruding plastic profiles
DE4203755C2 (en) 1992-02-10 1995-04-20 Reifenhaeuser Masch Process for regulating the individual layer thicknesses of a co-extruded multilayer plastic web
DE3941120C2 (en) 1989-12-13 1997-11-20 Krupp Kunststofftechnik Gmbh Method and arrangement for regulating the speed of a part of an extrusion plant
DE10014507A1 (en) 2000-03-23 2001-09-27 Krupp Elastomertechnik Gmbh Production of profiles from e.g. rubber, uses extrusion plant with extruders which feed common extruder head, profile produced being continuously moved away by conveyor and pressure in head and conveyor speed being controlled by computer
EP1180660A2 (en) * 2000-08-16 2002-02-20 Eastman Chemical Company Determination of layer thickness or non-uniformity of layer thickness based on fluorophore additives
WO2006130141A1 (en) * 2005-06-01 2006-12-07 3M Innovative Properties Company Method of controlling cross-web caliper profile of biaxially oriented polymeric films
EP1902828A1 (en) 2006-09-21 2008-03-26 Andreas Sobotta Method for determining the location coordinates of a point on a string from an extrusion tool

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3320203A1 (en) 1983-06-03 1984-12-06 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover METHOD AND SYSTEM FOR FEEDING A LOT OF MATERIAL STRIPS INTO A SINGLE OR MULTIPLE EXTRACTOR
EP0230365A2 (en) * 1986-01-17 1987-07-29 Infrared Engineering Limited Method and apparatus for sensing or determining one or more properties or the identity of a sample
DE3941120C2 (en) 1989-12-13 1997-11-20 Krupp Kunststofftechnik Gmbh Method and arrangement for regulating the speed of a part of an extrusion plant
DE4001479C1 (en) * 1990-01-19 1991-02-21 Roehm Gmbh, 6100 Darmstadt, De Thermoplastic material extruding appts. - has two or more extruders to form melt streams, co-extrusion adaptor, with two or more inlets, side channels, co-extrusion nozzle, etc.
US5128077A (en) * 1991-02-12 1992-07-07 General Tire, Inc. Method for producing multicomponent extrusions having controlled component contributions
DE4203755C2 (en) 1992-02-10 1995-04-20 Reifenhaeuser Masch Process for regulating the individual layer thicknesses of a co-extruded multilayer plastic web
DE4235163A1 (en) 1992-10-19 1994-04-21 Theysohn Friedrich Fa Device for extruding plastic profiles
DE10014507A1 (en) 2000-03-23 2001-09-27 Krupp Elastomertechnik Gmbh Production of profiles from e.g. rubber, uses extrusion plant with extruders which feed common extruder head, profile produced being continuously moved away by conveyor and pressure in head and conveyor speed being controlled by computer
EP1180660A2 (en) * 2000-08-16 2002-02-20 Eastman Chemical Company Determination of layer thickness or non-uniformity of layer thickness based on fluorophore additives
WO2006130141A1 (en) * 2005-06-01 2006-12-07 3M Innovative Properties Company Method of controlling cross-web caliper profile of biaxially oriented polymeric films
EP1902828A1 (en) 2006-09-21 2008-03-26 Andreas Sobotta Method for determining the location coordinates of a point on a string from an extrusion tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TORMALA S: "MEASURING LAYER THICKNESS IN COEXTRUSIONS BY INTERFEROMETRY", PLASTICS ENGINEERING, SOCIETY OF PLASTICS ENGINEERS,INC. GREENWICH, CONN, US, vol. 46, no. 3, 1 March 1990 (1990-03-01), pages 75 - 77, XP000171932, ISSN: 0091-9578 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016102641A1 (en) 2016-02-15 2017-08-17 Troester Gmbh & Co. Kg Method and apparatus for extruding a non-rotationally symmetric strand
WO2017140541A1 (en) 2016-02-15 2017-08-24 Troester Gmbh & Co. Kg Method and device for the extrusion of a non—rotationally symmetrical strand
DE102016102641B4 (en) 2016-02-15 2018-08-16 Troester Gmbh & Co. Kg Method and apparatus for extruding a non-rotationally symmetric strand
WO2020070047A1 (en) * 2018-10-01 2020-04-09 Sikora Ag Method and device for controlling a production system for planar or strand-shaped bodies
CN112823269A (en) * 2018-10-01 2021-05-18 斯考拉股份公司 Method and device for controlling a production plant for plate-shaped or wire-shaped objects
RU2774944C1 (en) * 2018-10-01 2022-06-24 Сикора Аг Method and apparatus for controlling a production system for flat or filamentous bodies
US12157263B2 (en) 2018-10-01 2024-12-03 Sikora Ag Method and device for controlling a production system for planar or strand-shaped bodies
DE102019127777A1 (en) * 2019-10-15 2021-04-15 Reifenhäuser GmbH & Co. KG Maschinenfabrik Plant for producing a coextruded multilayer film, device for coextruding a multilayer coextrusion composite and method for coextruding as well as method for operating a related plant and / or device
CN113910561A (en) * 2020-07-10 2022-01-11 恩格尔奥地利有限公司 Method for automatically monitoring at least one production process
CN113910561B (en) * 2020-07-10 2024-06-04 恩格尔奥地利有限公司 Method for automatically monitoring at least one production process

Also Published As

Publication number Publication date
DE112012002884A5 (en) 2014-04-10

Similar Documents

Publication Publication Date Title
DE4203755C2 (en) Process for regulating the individual layer thicknesses of a co-extruded multilayer plastic web
EP0904913B1 (en) Method for achieving a stable control of the bank profile in the extrusion of plastic films and sheets
DE102019119491B4 (en) Method and device for measuring a tubular strand
EP3529034A1 (en) Method for indirectly deriving a systematic dependency between a setting parameter and an optical property of a film web, method for adapting the quality of a film web
WO2013007250A1 (en) Method and device for producing an extruded, non-rotationally symmetrical extruded profile from a plurality of mix components.
EP0202497B1 (en) Temperature-compensated ultrasonic wall thickness measurement
DE102019215875A1 (en) Method for starting or ending film production in a film machine, film machine and computer program product
EP1193041A2 (en) Method and apparatus for controlling film thickness in a film blowing apparatus
EP3658349B1 (en) Method and device for the production control of an extruded plastics product and extrusion installation for extruding such a plastics product
EP0516992B1 (en) Process for determining and controlling the degree of orientation of tubular films produced by blown film apparatus
DE102016109087A1 (en) Method for controlling and controlling pipe extrusion plants
EP1902828B1 (en) Method for determining the location coordinates of a point on a string from an extrusion tool
EP4143000A1 (en) Blown-form identification in a blown film system
DE102008052611B3 (en) Process for producing plastic hollow bodies by blow molding
EP4045273B1 (en) Extrusion device and extrusion method
EP4045272B1 (en) Device for producing inline-oriented tubular films in a blowing process
EP4436765A1 (en) Method for monitoring a film bubble, and a film-blowing installation
WO2021136842A1 (en) Device and method for monitoring the internal geometry of a pipe
EP4045276B1 (en) Plant for producing a coextruded multi-layer film, apparatus for coextruding a multi-layered coextrusion composite and method for coextruding and also method for operating a plant and/or apparatus for this purpose
EP4344849A1 (en) Computer-implemented method for determining a shrink behavior
DE3536329A1 (en) Process and device for maintaining a constant wall thickness in the extrusion of blown films, pipes or tubular profiles made of plastic
DE102020127191A1 (en) PLASTIC MOLDING SYSTEM, METHOD FOR CHECKING A RELATIVE POSITION OF SYSTEM COMPONENTS OF SUCH PLASTIC MOLDING SYSTEM, AND METHOD FOR OPERATING AND METHOD FOR RETROFITTING SUCH SUCH PLASTIC FORMS
WO2024078715A1 (en) Method and measuring arrangement for determining the position of a frost limit during the production of a tubular film made of thermoplastic material
DE19732281C2 (en) Device for measuring the average web thickness of multi-wall sheets
DE9218580U1 (en) Device for extruding plastic profiles

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12740878

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 1120120028848

Country of ref document: DE

Ref document number: 112012002884

Country of ref document: DE

REG Reference to national code

Ref country code: DE

Ref legal event code: R225

Ref document number: 112012002884

Country of ref document: DE

Effective date: 20140410

122 Ep: pct application non-entry in european phase

Ref document number: 12740878

Country of ref document: EP

Kind code of ref document: A1