DE202013101428U1 - An ultrasonic sensor for monitoring the polymer injection molding process - Google Patents
An ultrasonic sensor for monitoring the polymer injection molding process Download PDFInfo
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- DE202013101428U1 DE202013101428U1 DE201320101428 DE202013101428U DE202013101428U1 DE 202013101428 U1 DE202013101428 U1 DE 202013101428U1 DE 201320101428 DE201320101428 DE 201320101428 DE 202013101428 U DE202013101428 U DE 202013101428U DE 202013101428 U1 DE202013101428 U1 DE 202013101428U1
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- thin film
- piezoelectric thin
- injection molding
- ultrasonic sensor
- monitoring
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 25
- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 229920000642 polymer Polymers 0.000 title claims abstract description 15
- 239000010409 thin film Substances 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000004642 Polyimide Substances 0.000 claims abstract description 8
- 229920001721 polyimide Polymers 0.000 claims abstract description 8
- 239000004020 conductor Substances 0.000 claims abstract description 5
- 229910002115 bismuth titanate Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 description 12
- 238000002604 ultrasonography Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—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
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/08—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring roughness or irregularity of surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2437—Piezoelectric probes
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76451—Measurement means
- B29C2945/76474—Ultrasonic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/025—Change of phase or condition
- G01N2291/0251—Solidification, icing, curing composites, polymerisation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/704—Piezoelectric or electrostrictive devices based on piezoelectric or electrostrictive films or coatings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
- H10N30/853—Ceramic compositions
- H10N30/8536—Alkaline earth metal based oxides, e.g. barium titanates
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Ein Ultraschallsensor zum Überwachen des Polymer-Spritzgussverfahrens, der folgende Teile aufweist: ein Metallbrett (1), ein Polyimidenbrett (2), zwei Fixierungsschrauben (3, 7), eine piezoelektrische Dünnschicht (4), eine von der piezoelektrischen Dünnschicht (4) polarisierte Elektrode (5), ein Elektrodenkabel (6), einen Erdleiter (8), wobei die Teile wie folgt miteinander verbunden sind: Die piezoelektrische Dünnschicht (4) ist auf der einen Seite des Metallbretts (1) aufgetragen; die von der piezoelektrischen Dünnschicht (4) polarisierte Elektrode (5) befindet sich auf der Oberfläche der piezoelektrischen Dünnschicht (4) und ist mit dem Elektrodenkabel (6) verbunden; das Polyimidenbrett (2) ist auf dem Elektrodenkabel (6) aufgedrückt und mit zwei Fixierungsschrauben (3, 7) an dem Metallbrett (1) befestigt; und der Erdleiter (8) ist an einer der zwei Fixierungsschrauben (3, 7) angeschlossen.An ultrasonic sensor for monitoring the polymer injection molding method, comprising: a metal board (1), a polyimide board (2), two fixing screws (3, 7), a piezoelectric thin film (4), one polarized by the piezoelectric thin film (4) Electrode (5), an electrode cable (6), a ground conductor (8), wherein the parts are connected together as follows: The piezoelectric thin film (4) is applied on one side of the metal board (1); the electrode (5) polarized by the piezoelectric thin film (4) is located on the surface of the piezoelectric thin film (4) and connected to the electrode cable (6); the polyimide board (2) is pressed onto the electrode cable (6) and fastened to the metal board (1) with two fixing screws (3, 7); and the earth conductor (8) is connected to one of the two fixing screws (3, 7).
Description
Technisches Gebiet Technical area
Die vorliegende Erfindung gehört zum Bereich der Polymer-Spritzgusstechnik. Sie betrifft insbesondere einen Ultraschallsensor zum Überwachen des Polymer-Spritzgussverfahrens. The present invention belongs to the field of polymer injection molding technology. In particular, it relates to an ultrasonic sensor for monitoring the polymer injection molding process.
Technischer Hintergrund Technical background
Polymerstoffe, zum Beispiel Plastik, haben vergleichsweise geringe Dichte, gute Verschleißbeständigkeit, niedrige Wärme- und Stromübertragungsfähigkeit. Ferner sind sie leicht zu formen. Daher finden sie in vielen Bereichen wie Industrie, Landwirtschaft, Verteidigung, Chemie, Biotechnik usw. breite Verwendung. Viele Polymerstoffe werden mittels Spritzgusstechnik verarbeitet. Im Vergleich zu Metall, Keramik oder Glas haben Polymerstoffe einen niedrigeren Schmelzpunkt. Die geschmolzene Flüssigkeit wird in die Gussform mit Druck gespritzt. Das Arbeitsverfahren ist vergleichsweise einfach und die Kosten sind vergleichsweise niedrig. Die Spritzgusstechnik ist heutzutage schon die meistverwendete Plastikverarbeitungstechnik. Die Qualität des Plastiks hängt sehr von der Überwachung und Kontrolle des Spritzgussvorgangs ab. Viele Parameter während des Spritzgussvorgangs wie Temperatur, Druck usw. haben großen Einfluss auf den Verarbeitungsvorgang und somit auf die Qualität des Plastiks. Die Überwachung des Spritzgussvorgangs ist daher sehr wichtig. Zurzeit gibt es bereits mehrere Überwachungsmethoden wie zum Beispiel die Thermoanalyse, die Thermo-Gewichts-Analyse, die optische Methode, die Stromimpuls-Methode, wobei die ersteren zwei Methoden den Wärmestrom und die Viskosität der geschmolzenen Flüssigkeit, und die letzteren zwei Methoden eher die mechanische Energie von Plastik messen. Solche Überwachungsmethoden können jedoch nur vergleichsweise wenige Informationen gewinnen und unterliegen deshalb gewissen Einschränkungen. Polymeric materials, for example plastics, have comparatively low density, good wear resistance, low heat and current transfer capability. Furthermore, they are easy to shape. Therefore, they are widely used in many fields such as industry, agriculture, defense, chemistry, biotechnology, and so on. Many polymer materials are processed by means of injection molding technology. Polymeric materials have a lower melting point compared to metal, ceramic or glass. The molten liquid is injected into the mold with pressure. The working procedure is relatively simple and the costs are comparatively low. Today, injection molding technology is the most widely used plastic processing technology. The quality of the plastic depends very much on the monitoring and control of the injection molding process. Many parameters during the injection molding process such as temperature, pressure, etc. have a great influence on the processing process and thus on the quality of the plastic. Monitoring the injection molding process is therefore very important. At present, there are already several monitoring methods such as the thermal analysis, the thermal weight analysis, the optical method, the current pulse method, the former two methods the heat flow and the viscosity of the molten liquid, and the latter two methods rather mechanical Measure energy of plastic. However, such monitoring methods can only gain comparatively little information and are therefore subject to certain restrictions.
Ferner gibt es eine Ultraschallüberwachungsmethode. Das ist eine Echtzeit- und Online-Messmethode, die die physikalischen und rheologischen Eigenschaften der Polymerstoffe misst. Es werden über Sensoren hauptsächlich folgende Informationen des Ultraschalls empfangen: die Geschwindigkeit, die Dämpfungsrate, die Reflexion und die Streuung des Ultraschalls. Diese Informationen haben korrespondierende Beziehung zu den dynamischen und physikalischen Eigenschaften eines Polymerstoffes während des Spritzguss-Verarbeitungsvorgangs. So zum Beispiel spiegeln die Geschwindigkeit und die Dämpfungsrate des Ultraschalls die Eigenschaften eines Polymerstoffes während des Verschmelzungs-, Gerinnungs- und Kristallisationsvorgangs wider. Die Reflexionssignale spiegeln die Wellenhöhe und die Falten der Oberfläche wider. There is also an ultrasound monitoring method. This is a real-time and online measurement method that measures the physical and rheological properties of polymer materials. Sensors mainly receive the following information about the ultrasound: the speed, the rate of attenuation, the reflection and the scattering of the ultrasound. This information has a correspondence with the dynamic and physical properties of a polymeric material during the injection molding processing operation. For example, the rate and rate of attenuation of ultrasound reflect the properties of a polymeric material during the coalescence, coagulation, and crystallization process. The reflection signals reflect the wave height and the wrinkles of the surface.
In den letzten Jahren hat sich die so genannte MEMS-Technik (auf Englisch: Microelectromechanical Systems) stark entwickelt und verbreitet. Die Polymer-Spritzgusstechnik findet auch immer mehr Anwendung in diesem Bereich. Die Tendenz in diesem Bereich ist, dass die Produkte von der Größe her immer kleiner und von der Form her immer verschiedenartiger werden und die Verarbeitungstemperatur immer höher wird. Daher wird ein Überwachungssensor für Polymer-Spritzgusstechnik benötigt, das dieser Tendenz entspricht. In recent years, the so-called MEMS technology (Microelectromechanical Systems) has developed and spread widely. Polymer injection molding technology is also finding increasing application in this area. The trend in this area is that the size of the products becomes smaller and smaller in shape, and the processing temperature becomes higher and higher. Therefore, a monitoring sensor for polymer injection molding technology is needed, which corresponds to this tendency.
Inhalt der Erfindung Content of the invention
Die vorliegende Erfindung stellt einen Ultraschallsensor zum Überwachen des Polymer-Spritzgussverfahrens bereit. The present invention provides an ultrasonic sensor for monitoring the polymer injection molding process.
Der erfindungsgemäße Ultraschallsensor zum Überwachen des Polymer-Spritzgussverfahrens umfasst folgende Teile: ein Metallbrett
Die Form des Metallbretts
Der erfindungsgemäße Ultraschallsensor zum Überwachen des Polymer-Spritzgussverfahrens besteht aus vergleichsweise wenigen Bestandteilen und ist von einfacher Struktur. Insbesondere kann der Ultraschallsensor in verschiedenen Formen hergestellt werden, um auf verschiedene Gussformen angepasst zu werden. Er ist auch sehr hochtemperaturbeständig. Zudem ist er leicht herzustellen und zu warten. Die Herstellungskosten sind vergleichsweise gering. The ultrasonic sensor according to the invention for monitoring the polymer injection molding process consists of comparatively few components and is of simple structure. In particular, the ultrasonic sensor can be made in various shapes to suit different molds. He is also very high temperature resistant. It is also easy to make and maintain. The production costs are comparatively low.
Der erfindungsgemäße Ultraschallsensor ist daher insbesondere geeignet, in solchen Polymer-Spritzgussverfahren eingesetzt zu werden, bei denen Produkte von kleinem oder sogar Mikro-Format hergestellt werden und/oder bei denen häufig hohe Betriebstemperaturen anzutreffen sind. The ultrasonic sensor according to the invention is therefore particularly suitable for use in such polymer injection molding processes in which products of small or even micro-format are produced and / or in which high operating temperatures are frequently encountered.
Erläuterung der Zeichnungen Explanation of the drawings
Darin zeigen: Show:
Ausführungsbeispiel embodiment
Im Folgenden wird anhand der Zeichnungen ein Ausführungsbeispiel der vorliegenden Erfindung näher erläutert. In the following an embodiment of the present invention will be explained in more detail with reference to the drawings.
Die Elektrode
Wie
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1 1
- Metallbrett metal board
- 2 2
- Polyimidenbrett Polyimidenbrett
- 3 3
- erste Fixierungsschraube first fixation screw
- 4 4
- piezoelektrische Dünnschicht piezoelectric thin film
- 5 5
- von der piezoelektrischen Dünnschicht polarisierte Elektrode electrode polarized by the piezoelectric thin film
- 6 6
- Elektrodenkabel electrode cable
- 7 7
- zweite Fixierungsschraube second fixation screw
- 8 8th
- Erdleiter ground wire
- 9 9
- Gussform mold
- 10 10
- Spritzgussflüssigkeit injection liquid
- 11 11
- Ultraschallsendesignale Ultrasonic transmitting signals
- 12 12
- Ultraschallsensor ultrasonic sensor
- 13 13
- Ultraschallreflexionssignale Ultrasonic reflection signals
- 14 14
- Ultraschallsensor A Ultrasonic sensor A
- 15 15
- Ultraschallsensor B Ultrasonic sensor B
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DE201320101428 DE202013101428U1 (en) | 2013-04-04 | 2013-04-04 | An ultrasonic sensor for monitoring the polymer injection molding process |
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DE201320101428 DE202013101428U1 (en) | 2013-04-04 | 2013-04-04 | An ultrasonic sensor for monitoring the polymer injection molding process |
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DE202013101428U1 true DE202013101428U1 (en) | 2013-05-22 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112083063A (en) * | 2019-06-12 | 2020-12-15 | 千竣科技有限公司 | Ultrasonic sensor |
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2013
- 2013-04-04 DE DE201320101428 patent/DE202013101428U1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112083063A (en) * | 2019-06-12 | 2020-12-15 | 千竣科技有限公司 | Ultrasonic sensor |
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