EP3416802A1 - Verfahren und vorrichtung zur extrusion eines nicht rotationssymmetrischen stranges - Google Patents
Verfahren und vorrichtung zur extrusion eines nicht rotationssymmetrischen strangesInfo
- Publication number
- EP3416802A1 EP3416802A1 EP17704705.7A EP17704705A EP3416802A1 EP 3416802 A1 EP3416802 A1 EP 3416802A1 EP 17704705 A EP17704705 A EP 17704705A EP 3416802 A1 EP3416802 A1 EP 3416802A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- radiation
- electromagnetic radiation
- components
- partially overlapping
- 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.)
- Withdrawn
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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
-
- 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
- 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
- G01B15/02—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 thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
- G01N23/087—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays using polyenergetic X-rays
-
- 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
- B29C2948/92133—Width or height
-
- 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
- B29C2948/92323—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
- 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
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
- B29K2021/006—Thermosetting elastomers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/615—Specific applications or type of materials composite materials, multilayer laminates
Definitions
- the invention relates to a method and a device for extruding a non-rotationally symmetrical strand of at least two, in particular three, at least partially overlapping strand components, wherein the device for extrusion comprises a plurality of extruders.
- These strand components each consist of an elastomer or an elastomer mixture, in particular rubber or rubber mixture, wherein the strand components form interfaces and / or joints with each other.
- the position of outer coordinates of the strand can be determined using a non-contact measuring method, in particular a laser measuring method.
- electromagnetic radiation is emitted by means of at least one radiation source which at least partially penetrates the strand.
- the electromagnetic radiation is detected after the at least partial penetration of the strand by means of at least one radiation detector and thereby generates at least one measurement signal, wherein the strand thereby moves relative to at least one radiation source.
- the layer thickness of the second partial layer is calculated by subtraction.
- a disadvantage of this method is in both cases, the quasi-impossible possibility to make a statement about the distribution of the sub-layers within the extrudate.
- the three height measurements in combination with the width measurement merely give a rough indication of this. Errors in the distribution in the direction of the thickness of the extrudate can not be determined hereby.
- this approach is disadvantageous because when changing the composition and / or geometry of the extrudate, the height measurement must be adapted cumbersome to these changes.
- EP 1 833 744 B1 describes a device for inspecting a conveyor belt by radiating it through X-ray or gamma radiation.
- a process computer evaluates the result of this radiographic examination.
- Another device for testing a plate material, for example for furniture or even for plastic films shows the DE 10 2006 050 839 B3.
- the furniture panels or the plastic film are transilluminated by a radiation emitting radiation source, which is recorded by means of a radiation detector. The measurement follows here in a housing which is filled with a gas.
- the first object is achieved according to the invention with a method according to the feature s len of claim 1.
- the further embodiment of the invention can be found in the dependent claims.
- a method for extruding a non-rotationally symmetric strand wherein the strand consists of at least two, in particular three,
- strand components each consisting of an elastomer or an elastomer mixture, in particular rubber or rubber mixture is prepared.
- the strand components form interfaces and / or joints with each other.
- the position of outer coordinates of the strand is determined using a non-contact measuring method, in particular a laser measuring method.
- electromagnetic radiation is emitted to determine the position of coordinates of the interfaces and / or joints and / or the distribution of the strand components in the strand cross-section, which at least partially penetrates the strand.
- the electromagnetic radiation is detected after the at least partial penetration of the strand and thereby generates at least one measurement signal.
- the strand is moving
- the method can thus be designed such that a strand located in the extrusion process, as it were an extruded profile, by means of electromagnetic radiation, comprising at least two
- the position of the irradiated point could be determined by means of a non-contact measuring method, possibly in conjunction with or merely due to a known or measured feed rate of the strand during the extrusion process.
- the point of the strand to be measured can be irradiated by electromagnetic radiation which has at least two mutually differing intensities. This may be advantageous, for example, in that it would be possible to realize a measurement of the layer thickness of a particular strand component present in the strand and its distribution in the strand, bypassing the need for a further additional auxiliary measurement.
- electromagnetic radiation which has at least two mutually differing intensities.
- the strand is penetrated by means of electromagnetic radiation having two mutually differing intensities. It can thus be shown that a strand does not include any number of strand components, but the number of strand components is reduced to only two. Thus, it might be considered advantageous if the number of intensities of electromagnetic radiation used in the measurement process is also limited to two.
- the strand by means of electromagnetic radiation comprising a number of differing Intensities equal to the number reduced by one is at least partially overlapping strand components, is penetrated.
- the electromagnetic radiation always has an intensity less than at least partially overlapping strand components are in the strand.
- the coordinates of the outer profile of the strand are determined.
- the total layer thickness and their distribution over the strand cross-section could be determined. This could z. B. by means of a difference formation measurement data to an undetermined strand component can be generated.
- the coordinates of the outer profile of the strand are determined by means of a non-contact measuring method, in particular a laser measuring method, an above-average overall picture of the development is shown.
- a non-contact measuring method can be designed to advantage in that no impairment of the strand or its surface is carried out by the measurement.
- the measurement could advantageously capture the entire outer profile at once.
- the strand has a number per se by means of electromagnetic radiation differing intensities equal to the number of overlapping strand components.
- measurement data for all strand components present in the strand could be generated at once. An additional measurement would not be necessary. It is therefore advantageous if the coordinates of the outer profile of the strand are not determined, as a result of which a possibly additionally established measuring method could be saved.
- the penetration of the strand by means of electromagnetic radiation with mutually differing intensities takes place at the same time or with a time offset and spatially offset.
- the acquisition of measurement data could take place at, for example, measuring positions one behind the other, with the strand passing under these positions. It can thus be given a spatial offset of the measurement positions, wherein a respective measurement could be divided with electromagnetic radiation of intensity respectively to a measurement position. The intensities of the electromagnetic radiation would thereby differ between the measuring positions.
- the coordinates of the interfaces and / or joints and / or the distribution of the strand components in the strand cross-section or strand and by the evaluation of the generated by the detection of electromagnetic radiation with varying intensities at least one measurement signal can be a statement about the position and / or coordinates of interfaces and / or joints and / or the distribution of the strand components in the strand cross-section or strand meet in detail.
- the found defects and / or thin areas and / or interruptions and / or foreign bodies can be marked, for example, and removed or repaired in a further method.
- conclusions about possible misadjustments to extruders and / or extruder components and / or possibly faulty strand components could be drawn.
- which has an effect is based on a target-actual comparison of the determined actual state of the strand cross-section or rod with a known, predetermined desired state of the strand cross-section or strand a manipulated variable for controlling the extrusion of Produced strand components. In this way, an influence on changeable parameters of the extruder and / or extruder components could be taken in the form of a control loop.
- the measurements are made continuously during the extrusion of the strand and without interruption of the strand feed, a complete detection of the strand cross-section or the strand can be made possible.
- the electromagnetic radiation having at least two differing intensities is electromagnetic radiation in at least two spectral regions to be distinguished.
- the measurement could be tuned, for example, to different properties of the materials used in the strand components, in order to obtain measurement results with low measurement uncertainties.
- the electromagnetic radiation is radiation in the spectral range of the x-ray and / or gamma radiation. This makes it possible that, due to the high energy of the types of radiation, the strand to be measured is penetrated with high probability and at least one measurement signal with a high signal-to-noise ratio can be generated.
- an apparatus for carrying out the method for extruding a non-rotationally symmetric strand which comprises a plurality of extruders for producing the non-rotationally symmetric strand of at least two, in particular three, at least partially overlapping strand components, and at least one electromagnetic radiation emitting radiation source and at least one electromagnetic Radiation detecting radiation detector has.
- electromagnetic radiation comprising at least two mutually differing intensities can be emitted or detected by means of one or more radiation sources and one or more radiation detectors.
- the device has a radiation source which can emit electromagnetic radiation having at least two differing intensities.
- the number of intensities of the electromagnetic radiation can be determined by the number of strand components that at least partially overlap in the strand. It would be possible here a number of intensities, which is equal to the number of strand components at least partially overlapping strand components or reduced by one against this number. However, it would also be conceivable to arrange a plurality of radiation sources, each radiation source emitting only one electromagnetic radiation with one intensity.
- a radiation source emitting electromagnetic radiation with two intensities may be arranged, but two radiation detectors are used, wherein a respective radiation detector detects electromagnetic radiation of an intensity.
- the number of intensities of the electromagnetic radiation detectable by the arranged radiation detector or the arranged radiation detectors would have to be equal to the number of intensities of the electromagnetic radiation that can be emitted by the arranged radiation source or the arranged radiation sources.
- a further possibility would be the use of a radiation detector or of several radiation detectors which has or have a different sensitivity for different spectral ranges.
- two radiation sources could emit electromagnetic radiation with two mutually different intensities, the electromagnetic radiation of each intensity being located in different spectral ranges.
- a radiation detector which has a different sensitivity for these spectral ranges, could exploit them separately, among other things.
- the number of radiation sources and / or the radiation detectors is less than the number of at least partially overlapping strand components. This can serve to minimize the expenditure on equipment if an already necessary contour measurement of the strand is provided. Furthermore, if the at least one radiation source emits radiation in the form of a fan beam and / or the at least one radiation detector is cell-shaped, then it is z. B. possible to represent the strand in its cross-sectional profile. By summation or integration of the individual strand cross-sections, it may be possible to represent the strand discretely in its entirety.
- the cell-shaped radiation detector is arranged with its longitudinal direction orthogonal or at a relative angle to an extrusion direction of the strand. This makes it possible to represent the strand cross-section over the entire strand width at once, directly or to achieve the resolution of the strand cross-section by increasing the area to be measured and converting it to the actual strand cross-section. Moreover, it is considered to be promising if the at least one radiation source and the at least one radiation detector on the equilateral side of the strand and / or the at least one radiation source and the at least one radiation detector are arranged on opposite sides of the strand. In this way, for example, the circumstances within the production environment can be accounted for. Moreover, it may thus be possible to carry out measurements in the transmission and / or reflection method.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electromagnetism (AREA)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016102641.7A DE102016102641B4 (de) | 2016-02-15 | 2016-02-15 | Verfahren und Vorrichtung zur Extrusion eines nicht rotationssymmetrischen Stranges |
PCT/EP2017/052687 WO2017140541A1 (de) | 2016-02-15 | 2017-02-08 | Verfahren und vorrichtung zur extrusion eines nicht rotationssymmetrischen stranges |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3416802A1 true EP3416802A1 (de) | 2018-12-26 |
Family
ID=58018079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17704705.7A Withdrawn EP3416802A1 (de) | 2016-02-15 | 2017-02-08 | Verfahren und vorrichtung zur extrusion eines nicht rotationssymmetrischen stranges |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3416802A1 (de) |
DE (1) | DE102016102641B4 (de) |
WO (1) | WO2017140541A1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5128077A (en) | 1991-02-12 | 1992-07-07 | General Tire, Inc. | Method for producing multicomponent extrusions having controlled component contributions |
DE102004061367A1 (de) | 2004-12-21 | 2006-07-06 | Phoenix Ag | Einrichtung zur zerstörungsfreien Inspektion eines Fördergurtes |
DE102006050839B3 (de) | 2006-10-27 | 2008-02-14 | Fagus-Grecon Greten Gmbh & Co Kg | Vorrichtung zum Prüfen eines flächigen Materials |
DE112012002884A5 (de) | 2011-07-08 | 2014-04-10 | Troester Gmbh & Co. Kg | Verfahren sowie Vorrichtung zur Herstellung eines extrudierten, nicht rotationssymmetrischen Strangprofils aus mehreren Mischungskomponenten |
DE102014212633B4 (de) * | 2014-06-30 | 2017-03-09 | Inoex Gmbh | Messvorrichtung und Verfahren zur Vermessung von Prüfobjekten |
-
2016
- 2016-02-15 DE DE102016102641.7A patent/DE102016102641B4/de active Active
-
2017
- 2017-02-08 WO PCT/EP2017/052687 patent/WO2017140541A1/de active Application Filing
- 2017-02-08 EP EP17704705.7A patent/EP3416802A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102016102641B4 (de) | 2018-08-16 |
DE102016102641A1 (de) | 2017-08-17 |
WO2017140541A1 (de) | 2017-08-24 |
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