CN203053923U - Sensor for monitoring high polymer material injection moulding process - Google Patents
Sensor for monitoring high polymer material injection moulding process Download PDFInfo
- Publication number
- CN203053923U CN203053923U CN2012204803602U CN201220480360U CN203053923U CN 203053923 U CN203053923 U CN 203053923U CN 2012204803602 U CN2012204803602 U CN 2012204803602U CN 201220480360 U CN201220480360 U CN 201220480360U CN 203053923 U CN203053923 U CN 203053923U
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- China
- Prior art keywords
- injection moulding
- polymer material
- high polymer
- sensor
- moulding process
- 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.)
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- 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
- G01N29/04—Analysing solids
- G01N29/043—Analysing solids in the interior, e.g. by shear waves
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- 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
-
- 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
-
- 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
- G01N2291/04—Wave modes and trajectories
- G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a sensor for monitoring a high polymer material injection moulding process. The sensor for monitoring the high polymer material injection moulding process comprises a metal plate, a piezoelectric film, an electrode electrically polarized by the piezoelectric film, a polyamide pressing plate, an electrode wire, a ground wire and two fastening screws. The piezoelectric film covers the surface of one side of one metal plate; the electrode electrically polarized by the piezoelectric film is arranged on the surface of the piezoelectric film; and the two fastening screws are used for pressing one electrode wire and one ground wire on the metal plate by virtue of one polyamide pressing plate. The sensor for monitoring the high polymer material injection moulding process can be made into a small size and a changeable shape as required, also has high temperature resistant characteristic and can be applied to ultrasonic testing in the high polymer material injection moulding process.
Description
Technical field
The present invention relates to the fields of measurement in the high polymer material processing, is a kind of sensor that uses when utilizing ultrasound wave monitoring high polymer material injection moulding process.
Background technology
The high polymer material as plastics, because it has low-density, wear-resistant, low heat-conductivity conducting, and is easy to characteristics such as moulding, has been widely used in industry, agricultural, national defence, chemical industry, biological medicine every field.Most of high polymer material products are to machine by injection moulding as plastic product.With respect to metal, pottery, glass, the melting point of plastics is lower, and the liquid that melts is injected the die cavity moulding through pressurization, and technology is easy, and cost is low, and injection moulding processing has become the main processing mode of plastic product.The quality of injecting products greatly relies on the control of injection moulding process, and some procedure parameters all can influence the state of injection moulding process as temperature, pressure etc., thereby influences the quality of product.It is especially important that the diagnosis of injection moulding process seems.At present, having developed the diagnostic techniques of multiple injection moulding process, all is the quality of monitoring injecting products by the parameter such as hot-fluid, viscoelastic, yardstick that liquid is melted in measurement as thermal analysis system, thermogravimetry etc.Other also has optical means, impulse method all is by measuring the mechanical energy of injecting products, monitoring its quality.Yet these technology are subjected to certain restriction owing to cost height, quantity of information are little in the use.
Another kind of technology is the Ultrasonic Diagnosis technology, is a kind of real-time, online measuring technique, and realizes multiple physical characteristics and the rheological characteristics of the high polymer material in noncontact, the non-injection moulding process of measuring intrusively in die cavity or mould in the measuring process.The basic ultrasonic signal that receives by sensor comprises hyperacoustic speed, attenuation rate, and reflection, scattering etc.Dynamic property, rerum natura in the injection moulding process of these signals and high polymer material have one-to-one relationship.Utilize the schematic diagram of ultrasound examination high polymer material injection moulding process to see Fig. 1.Represent among the figure that the sensor emission ultrasonic signal imports different media into, at the interface of different medium, or on the different interface of same medium rerum natura, ultrasound wave reflects.By calculating wavelength, the amplitude of incident and reflected signal, can determine the feature on the interface.For example ultrasonic velocity and attenuation rate change the thawing directly reacted the high polymer material, solidify, crystallization process, and hyperacoustic reflection wave signal has reacted the waviness of material surface, the feature of fold.
In recent years, along with the development of MEMS (micro electro mechanical system) (MEMS), the trend of yardstick miniaturization, diversification of varieties, high temperature process has taken place in the high polymer material injection moulding processing application in this field.In order to adapt to this trend, need a kind of sensor that utilize Ultrasonic Diagnosis technology monitoring high polymer material injection moulding process, and thisly go out sensor and should adapt to less size, changeable shape, higher working temperature.
Summary of the invention
The purpose of this invention is to provide a kind of sensor of monitoring the injection moulding of high polymer material, it is characterized in that: it comprises that a sheet metal, piezoelectric membrane, one are by the electropolarized electrode of piezoelectric membrane, a polyimide pressing plate, an electrode wires, a ground wire, two holding screws.The annexation of above-mentioned each parts is:
Side surface at a sheet metal covers a piezoelectric membrane;
On the piezoelectric membrane surface be one by the electropolarized electrode of piezoelectric membrane;
By two holding screws a polyimide pressing plate is pushed down an electrode wires and a ground wire on sheet metal.
The technical solution used in the present invention:
What Fig. 2 was that the present invention proposes is a kind of outside drawing of the sensor that uses when utilizing ultrasound wave monitoring high polymer material injection moulding process.This sensor is specially adapted to use under less size, changeable profile and the hot environment.For realizing above function, this sensor comprises a sheet metal, and its shape can be determined according to geometric shape and the characteristic of injection mold.Its material can be selected consistent with the heat transfer effect that guarantees injection mold integral body with the injection mold identical materials.One side of sheet metal contacts with injection moulding high polymer material injection moulding solution, and opposite side surface coverage piezoelectric membrane is used for transponder pulse signal and sensation reflex signal.The core of piezoelectric membrane is by the electropolarized electrode of piezoelectric membrane.Electrode inserts lead.This lead is pushed down by a polyimide pressing plate.Polyimide is insulating material, while anti-400C ° high temperature, and its two ends are fixed on the sheet metal with two holding screws.A ground wire is connected on the holding screw.
Advantage of the present invention:
The sensor that uses when utilizing ultrasound wave monitoring high polymer material injection moulding process of the present invention can be made shape arbitrarily as required, and is easy to use; Comprise less parts, simple in structure, easy to maintenance, low cost of manufacture are applicable to small-sized or the micro-injection moulding field.In addition, the material of these each parts of sensor all has resistant to elevated temperatures characteristic, is applicable to the Ultrasonic Detection in the injection moulding process under the hot environment that modern injection moulding processing industry often runs into.
Description of drawings
Fig. 1 is the schematic diagram that utilizes ultrasound wave monitoring high polymer material injection moulding process; Among the figure, 8 injection molds, 9 high polymer material injection moulding solution, 10 emission ultrasonic signals, 11 sensors, 12 ultrasonic reflection signal.
Fig. 2 is the outside drawing that utilizes the sensor of ultrasound wave monitoring high polymer material injection moulding process; Among the figure, 1 sheet metal, 2 polyimide pressing plates, 3 holding screws, 4 piezoelectric membranes, 5 are by the electropolarized electrode of piezoelectric membrane, 6 electrode wires, 7 holding screws, 8 ground wires.
Fig. 3 is to use the synoptic diagram of the sensor of ultrasound wave monitoring high polymer material injection moulding process; Among the figure, 9 high polymer material injection moulding solution, 8 injection molds, 13 sensors A, 14 sensor B.
Embodiment
Further specify structure and the principle of the sensor that utilizes ultrasound wave monitoring high polymer material injection moulding process of the present invention's proposition with a specific embodiments.
This scheme outside drawing is seen Fig. 2.This sensor comprises a sheet metal, and its shape can be chosen as three-dimensional cube according to geometric shape and the characteristic of injection mold.Its material selects the cast steel material identical with injection mold to guarantee the heat transfer effect unanimity of injection mold integral body.Sheet metal is respectively 50mm, 25mm with the length and width of the side that injection moulding high polymer material injection moulding solution contacts, height 12mm.Opposite side surface coverage piezoelectric membrane, material are bismuth titanium (bismuth titanate), and thickness is 90 μ m, with the frontier distance 5mm of sheet metal, are added to metal sheet surface with the method for spraying, are used for transponder pulse signal and sensation reflex signal.The core of piezoelectric membrane is by the electropolarized electrode of piezoelectric membrane, diameter 10mm, thickness 10 μ m.A dielectric polyimide pressing plate is pushed down electrode and is inserted lead.This lead is received on the electrode.Polyimide pressing plate two ends are fixed on the sheet metal with two holding screws.A ground wire is connected on the holding screw.
During use, with the sensor one or more, be installed on the injection mold, as Fig. 3, use shown in the synoptic diagram of sensor of ultrasound wave monitoring high polymer material injection moulding process, this embodiment is used two the sensors.The side that the sheet metal of sensors A and sensor B contacts with high polymer material injection moulding solution keeps flushing with injection mold, sees internally, and be the part of injection mold cavity.
Claims (3)
1. sensor of monitoring high polymer material injection moulding process, it is characterized in that: it comprises a sheet metal, piezoelectric membrane, one by the electropolarized electrode of piezoelectric membrane, a polyimide pressing plate, an electrode wires, a ground wire, two holding screws, and the annexation of above-mentioned each parts is:
Side surface at a sheet metal covers a piezoelectric membrane;
On the piezoelectric membrane surface be one by the electropolarized electrode of piezoelectric membrane;
By two holding screws a polyimide pressing plate is pushed down an electrode wires and a ground wire on sheet metal.
2. the sensor of monitoring high polymer material injection moulding process according to claim 1 is characterized in that, described piezoelectric film material is the bismuth titanium.
3. the sensor of monitoring high polymer material injection moulding process according to claim 1 is characterized in that, described is in described piezoelectric membrane center by the electropolarized electrode of piezoelectric membrane.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204803602U CN203053923U (en) | 2012-09-18 | 2012-09-18 | Sensor for monitoring high polymer material injection moulding process |
| PCT/CN2012/085330 WO2014043994A1 (en) | 2012-09-18 | 2012-11-27 | Sensor for monitoring high polymer material injection molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204803602U CN203053923U (en) | 2012-09-18 | 2012-09-18 | Sensor for monitoring high polymer material injection moulding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053923U true CN203053923U (en) | 2013-07-10 |
Family
ID=48736863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204803602U Expired - Fee Related CN203053923U (en) | 2012-09-18 | 2012-09-18 | Sensor for monitoring high polymer material injection moulding process |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203053923U (en) |
| WO (1) | WO2014043994A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63178021A (en) * | 1987-01-19 | 1988-07-22 | Toshiba Mach Co Ltd | Method and apparatus for controlling injection molder |
| JPH02305615A (en) * | 1989-05-22 | 1990-12-19 | Sekisui Chem Co Ltd | Measuring method of gate sealing period of time, in injection molding |
| WO2010005375A1 (en) * | 2008-07-07 | 2010-01-14 | Reosense Ab | Measurement of curing |
| CN101846653B (en) * | 2010-04-30 | 2011-09-14 | 湖北大学 | Piezoelectric film bulk acoustic wave sensor with polygonal electrodes |
| CN103493510B (en) * | 2011-02-15 | 2016-09-14 | 富士胶卷迪马蒂克斯股份有限公司 | Use the piezoelectric transducer of micro-dome array |
| CN202318849U (en) * | 2011-10-08 | 2012-07-11 | 天津空中代码工程应用软件开发有限公司 | Ultrasonic monitoring system in the injection molding process of high polymer materials |
| CN102601951B (en) * | 2012-03-12 | 2014-05-07 | 浙江大学 | Method for detecting die cavity pressure in injection molding process based on ultrasonic signals |
| DE202012008359U1 (en) * | 2012-09-03 | 2012-10-08 | Tianjin Aerocode Engineering Application Software Development Inc. | Ultrasonic monitoring system for monitoring a polymer injection molding process |
-
2012
- 2012-09-18 CN CN2012204803602U patent/CN203053923U/en not_active Expired - Fee Related
- 2012-11-27 WO PCT/CN2012/085330 patent/WO2014043994A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2014043994A1 (en) | 2014-03-27 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20130918 |