CN107589154A - Melt sensor and Mo Nei melt sensor-based systems in a kind of mould - Google Patents
Melt sensor and Mo Nei melt sensor-based systems in a kind of mould Download PDFInfo
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- CN107589154A CN107589154A CN201610537950.7A CN201610537950A CN107589154A CN 107589154 A CN107589154 A CN 107589154A CN 201610537950 A CN201610537950 A CN 201610537950A CN 107589154 A CN107589154 A CN 107589154A
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Abstract
The invention discloses melt sensor in a kind of mould and Mo Nei melt sensor-based systems.Melt sensor includes in the mould：Mould inner capacitor (1) and capacitance measuring device (2), wherein, mould inner capacitor (1) is made up of the battery lead plate and the moving platen of mould being arranged on stationary mould for mould plate, insulating barrier is provided between battery lead plate and solid plate, and battery lead plate contacts with the die cavity of mould；Capacitance measuring device (2) is used to the capacitance signal in mould inner capacitor being converted to corresponding voltage signal, and voltage signal is used for the state of melt in die cavity in the whole injection molding process of on-line checking.Melt sensor can utilize the capacitance variations that melt injection is brought in mould provided by the invention, carry out the state of melt in the whole injection molding process of on-line checking, and the melt state information of detection is continuous, abundant.And install in the mould after melt sensor, mould cavity is still metal die cavity, will not reduce the intensity of die cavity, applied widely.
Description
Technical field
The present invention relates to mould detection technique field, melt sensor-based system and Mo Nei melts sensing in more particularly to a kind of mould
System.
Background technology
With the distillation that product market competition is fierce, efficient, energy-saving and environmental protection are advocated, low cost just increasingly becomes enterprise
For the magic weapon won victory in competition with all, one of the key link is exactly that high efficiency, the quality of injecting products production process are supervised
Survey and the high intelligent and inexpensive expenditure of control, efficient resource efficiently utilize etc. proposition higher, more competitive, more
Intelligence, the requirement more automated.
In whole injection molding process, great changes will take place for state of the melt in die cavity, and these changes are to product
Quality has conclusive influence.Therefore the detection of melt state, the detection of state especially in die cavity, to predicting and controlling production
Quality has vital effect.
At this stage, typically using camera shooting glass die cavity technology and ultrasonic pulse reflection method, to injection molding process
The state of middle melt is detected, and still, in camera shooting glass die cavity technology, melt is needed by glass die cavity rather than tradition
Metal die cavity, reduce the intensity of die cavity, had a strong impact on the application of the technology；And in ultrasonic pulse reflection method, sensor
Installation site be limited, there is provided melt state information it is very limited and discrete.
The content of the invention
It is limited to solve the existing camera shooting glass die cavity technology scope of application, and the letter of ultrasonic pulse reflection method collection
The problem of limited is ceased, the embodiments of the invention provide melt sensor in a kind of mould and Mo Nei melt sensor-based systems.The technology
Scheme is as follows：
On the one hand, the embodiments of the invention provide melt sensor in a kind of mould, including：
Mould inner capacitor, it is made up of the battery lead plate and the moving platen of the mould being arranged on stationary mould for mould plate, the electricity
Insulating barrier is provided between pole plate and the solid plate, and the battery lead plate contacts with the die cavity of the mould；
Capacitance measuring device, it is connected with the mould inner capacitor, for the capacitance signal in the mould inner capacitor to be turned
Corresponding voltage signal is changed to, the voltage signal is for melt in die cavity described in the whole injection molding process of on-line checking
State.
In the above-mentioned mould of the embodiment of the present invention in melt sensor, the capacitance measuring device, including：
Convert of capacitor to voltage device, it is connected with the mould inner capacitor, in whole injection molding process, by the mould
Capacitance signal on inner capacitor is converted into corresponding analog voltage signal；
Analog-digital commutator, it is connected with the capacitance voltage converter, for the capacitance voltage converter to be collected
Analog voltage signal be converted into corresponding digital voltage signal；
Data acquisition device, it is connected respectively with the analog-digital commutator and processor, for gathering the analog-to-digital conversion
Digital voltage signal caused by device, and transmit into processor, for institute in the whole injection molding process of processor on-line checking
State the state of melt in die cavity.
In the above-mentioned mould of the embodiment of the present invention in melt sensor, the battery lead plate is with the die cavity away from injection hole
End thereof contacts, the injection hole are to connect and be used for inject the logical of melt into the die cavity for the mould with the die cavity
Hole.
In the above-mentioned mould of the embodiment of the present invention in melt sensor, the battery lead plate is prepared using die steel material.
In the above-mentioned mould of the embodiment of the present invention in melt sensor, the insulating barrier is made pottery by aluminium oxide ceramics or zirconium oxide
It is prepared by porcelain.
In the above-mentioned mould of the embodiment of the present invention in melt sensor, the capacitance measuring device passes through antistatic induced electricity
Line is connected with the battery lead plate.
On the other hand, the embodiments of the invention provide melt sensor-based system in a kind of mould, including：
Mould inner capacitor, it is made up of the battery lead plate and the moving platen of the mould being arranged on stationary mould for mould plate, the electricity
Insulating barrier is provided between pole plate and the solid plate, and the battery lead plate contacts with the die cavity of the mould；
Capacitance measuring device, it is connected with the mould inner capacitor, for the capacitance signal in the mould inner capacitor to be turned
It is changed to corresponding voltage signal；
Processor, it is connected with the capacitance measuring device, for the voltage signal provided according to the capacitance measuring device,
Described in the whole injection molding process of on-line checking in die cavity melt state.
In the above-mentioned mould of the embodiment of the present invention in melt sensor-based system, the capacitance measuring device, including：
Convert of capacitor to voltage device, it is connected with the mould inner capacitor, in whole injection molding process, by the mould
Capacitance signal on inner capacitor is converted into corresponding analog voltage signal；
Analog-digital commutator, it is connected with the capacitance voltage converter, for the capacitance voltage converter to be collected
Analog voltage signal be converted into corresponding digital voltage signal；
Data acquisition device, it is connected respectively with the analog-digital commutator and processor, for gathering the analog-to-digital conversion
Digital voltage signal caused by device, and transmit into the processor, for the whole injection molding of processor on-line checking
During in the die cavity melt state.
In the above-mentioned mould of the embodiment of the present invention in melt sensor-based system, the insulating barrier is by aluminium oxide ceramics or zirconium oxide
It is prepared by ceramics.
In the above-mentioned mould of the embodiment of the present invention in melt sensor-based system, the capacitance measuring device is sensed by antistatic
Electric wire is connected with the battery lead plate.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
Melt sensor in mould is formed by mould inner capacitor and capacitance measuring device, wherein, mould inner capacitor is by setting
The moving platen of battery lead plate and mould on stationary mould for mould plate is formed, and insulating barrier, electrode are provided between battery lead plate and solid plate
Plate contacts with the die cavity of mould, and so when injecting melt in die cavity, the capacitance signal of mould inner capacitor can occur to become accordingly
Change, the capacitance signal in mould inner capacitor is converted to corresponding voltage signal by capacitance measuring device, and the voltage signal can be used
In the whole injection molding process of on-line checking in die cavity melt state.Melt sensor can utilize melt so in the mould
The capacitance variations brought are injected, come the state of melt in the whole injection molding process of on-line checking, the melt state information of detection
Continuously, enrich.Moreover, installing in the mould after melt sensor, mould cavity is still metal die cavity, will not shoot glass as camera
The intensity of die cavity is equally reduced in die cavity technology, it is applied widely.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structural representation of mould provided in an embodiment of the present invention；
Fig. 2 is the structural representation of melt sensor in a kind of mould of the offer of the embodiment of the present invention one；
Fig. 3 is the testing result figure of voltage signal in a kind of injection molding process that the embodiment of the present invention one provides；
Fig. 4 is a kind of structural representation for capacitance measuring device that the embodiment of the present invention one provides；
Fig. 5 is the structural representation of melt sensor-based system in a kind of mould of the offer of the embodiment of the present invention two；
Fig. 6 is a kind of structural representation for capacitance measuring device that the embodiment of the present invention two provides.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Before the embodiment of the present invention is discussed in detail, the application scenarios of the application are first introduced, referring to Fig. 1, in the mould
Melt sensor application is in the mould of injection molding, and referring to Fig. 1, the injection forming mold can include：Solid plate 100, move
It is used for the die cavity 300 for forming product between template 200 and solid plate 100 and moving platen 200.Typically also opened on cover half block 100
Provided with the injection hole (not indicated in accompanying drawing) connected with die cavity 300, for being uniformly injected into non-conductive melt, example into die cavity 300
Such as：Plastics etc..
Embodiment one
The embodiments of the invention provide melt sensor in a kind of mould, suitable for various non-conductive melts, referring to Fig. 2, bag
Include：Mould inner capacitor 1 and capacitance measuring device 2.
Wherein, referring to Fig. 1, mould inner capacitor 1, by the dynamic of the battery lead plate 11 that is arranged on stationary mould for mould plate 100 and mould
Template 200 is formed, and insulating barrier 12 is provided between battery lead plate 11 and solid plate 100, and the die cavity 300 of battery lead plate 11 and mould connects
Touch.In the present embodiment, the two poles of the earth of mould inner capacitor 1 are respectively battery lead plate 11 and moving platen 200, the one side of battery lead plate 11 and die cavity
300 contact and other faces completely cut off by insulating barrier 12 and solid plate 100.
Capacitance measuring device 2, it is connected with mould inner capacitor 1, for the capacitance signal in mould inner capacitor 1 to be converted into phase
The voltage signal answered, the voltage signal are used for the state of melt in die cavity 300 in the whole injection molding process of on-line checking.In reality
In the application of border, the voltage signal that capacitance measuring device 2 collects can be transmitted into processor or computer, for its basis
Default algorithm calculates the state of melt.
In the present embodiment, whole injection molding process generally comprises：It is Guan Mo (or claim matched moulds), injection, pressurize, cold
But, the stage such as die sinking.I.e. polymeric particles reach flow regime (i.e. melt) by heating in barrel and have superior moldability,
Die cavity 300, the overall process deviate from after melt cooling sizing from mould are filled under the promotion of screw rod.Though said process lasts
It is short, but great changes will take place for state of the melt in die cavity 300, and these changes have conclusive influence to the quality of product.
Therefore the detection of melt state, the detection of state, most important to predicting and controlling product quality to have especially in die cavity 300
Effect.
In the present embodiment, mould is formed by the battery lead plate 11 and the moving platen 200 of mould being arranged on stationary mould for mould plate 100
The two poles of the earth of inner capacitor 1, solid plate 100 and the moving platen 200 respectively electric capacity of mould inner capacitor 1, the electric capacity C of mould inner capacitor 1
It can be calculated according to equation below：
Wherein, the dielectric constant of ε media between electric capacity the two poles of the earth, A are the relative area at electric capacity the two poles of the earth, and d is electric capacity the two poles of the earth
Between relative distance.
After mould closes mould, the A and d of the electric capacity of mould inner capacitor 1 are definite value, and from air to a part in die cavity 300
The state transformation of a part of melt of air, until melt is all in die cavity 300, in said process, the electric capacity intermediary of mould inner capacitor 1
The dielectric constant of matter is changing always, and with dielectric constant linear change occurs for the electric capacity C of mould inner capacitor 1, therefore,
Under different phase, the change of the electric capacity of mould inner capacitor 1, it can be melted according in whole injection molding process to obtain in die cavity 300
The state of body.
Specifically, in whole injection cycle, the voltage signal that capacitance measuring device 2 measures changes with time such as Fig. 3
It is shown.
In injection stage, as melt is injected into die cavity 300, the air between electric capacity the two poles of the earth of mould inner capacitor 1 is situated between
Matter is substituted rapidly by melt, and voltage signal dramatically increases.By melt sensor in this mould, detect that current sample time t melts
Body flow locations x in die cavity 300t, calculus of differencesWherein xt-1For last sampling instant t-1 melt position
Put, Δ T is the sampling period, it can thus be concluded that the melt flow rate v to current sample time tt, and then it is uniformly permanent for closed-loop control
Fixed flowing velocity provides Fundamentals of Measurement.
In packing stage, significant change occurs for voltage signal slope, rises slowly, because after die cavity 300 is filled
Only a small amount of melt continues to be pressed into (injection) die cavity 300, (is protected to supplement the space formed by melt cure shrinkage
Pressure).In actual applications, the gross mass of melt can be calculated by the voltage signal of injection stage and packing stage.Specifically
Ground, when having just enter into injection stage, take voltage signal U0；At the end of packing stage, the voltage signal U1 of maximum is taken (because working as
, would not be when injecting melt, and having arrived cooling stage when voltage signal reaches maximum, voltage signal is to have to slightly decrease
Trend), calculate the difference DELTA U between U1 and U0, and melt gross mass used in this injection molding of weighing.Count multiple
Relation between the Δ U and melt gross mass of annotation, and corresponding model is simulated, in detection process afterwards, it is only necessary to
Calculate Δ U, you can correspondingly melt gross mass is calculated according to default model.
In addition, can also detect the dwell time in packing stage, the setting of dwell time is acted for control pressurize
Time, dwell time deficiency will make product that size occur, and weight is unstable.But the dwell time is long, the energy can be caused
Waste.In actual applications, the dwell time can be set using Δ U, specifically, first in an annotation, is not provided with pressurize
Time, a Δ U is obtained, be then spaced preset time (such as 1 second), be stepped up the dwell time, by obtaining multiple Δ U,
When obtained Δ U values keep constant, now the increased time is just the dwell time altogether.
In cooling stage, voltage signal change is more gentle, with slightly decreasing trend.On the one hand its reason is melt
It is changed into solid after cooled and solidified, is on the other hand due to that small air layer is formd in die cavity 300.Because melt senses in mould
The voltage signal of the output of device, changed also with the progress of process of setting.Therefore melt sensor in mould can be based on
Output voltage signal, establish melt in cooling stage SOLIDIFICATION MODEL, freezing rate detected, at the end of determining process of setting
Between, and then optimal cool time is estimated, injection efficiency is improved, saves the energy.
Alternatively, can include referring to Fig. 4, capacitance measuring device 2：
Convert of capacitor to voltage device 21, it is connected with mould inner capacitor 1, will be electric in mould in whole injection molding process
Capacitance signal on container 1 is converted into corresponding analog voltage signal.
Analog-digital commutator 22, it is connected with capacitance voltage converter 21, for collect capacitance voltage converter 21
Analog voltage signal is converted into corresponding digital voltage signal.
Data acquisition device 23, it is connected, is used for analog-digital commutator 22 and processor (can also be computer) respectively
Digital voltage signal caused by analog-digital commutator 22 is gathered, and is transmitted into processor, is entirely noted for processor on-line checking
It is moulded into the state of melt in die cavity 300 during type.
In the present embodiment, the capacitance measuring device 2 is simple in construction, practical.
Alternatively, battery lead plate 11 and end thereof contacts of the die cavity 300 away from injection hole, injection hole are to be connected simultaneously with die cavity 300
For the through hole of melt to be injected into die cavity 300 for mould.
In the present embodiment, the melt of die cavity 300 is usually and injected by injection hole, and is flowed in die cavity 300, until filling out
Full of whole die cavity 300, and the one end of die cavity 300 away from injection hole is for the last filling point of die cavity 300, works as melt contacts
During to the last filling point of die cavity 300, injection stage just finishes.Because the electric capacity of injection stage and packing stage is advanced the speed
Have very big difference, by battery lead plate 11 be arranged to end thereof contacts of the die cavity 300 away from injection hole, that is, cover die cavity 300 most
Filling point afterwards, it can be used for detecting the conversion time node between injection phase and packing stage.
Alternatively, battery lead plate 11 can use die steel material to prepare, i.e., with solid plate 100, moving platen 200 using same
Material prepare, and then reduce the installation of melt sensor in mould, the adverse effect carried to mould.
Alternatively, insulating barrier 12 can be prepared by aluminium oxide ceramics or zirconia ceramics so that and insulation effect is more preferable, and then
The Detection results of sensor are ensured.
Alternatively, capacitance measuring device 2 senses electric wire by antistatic and is connected with battery lead plate 11, can effectively reduce outside
Interference of the electrostatic to sensor measurement.
The embodiment of the present invention forms melt sensor in mould by mould inner capacitor and capacitance measuring device, wherein, in mould
Capacitor is made up of the battery lead plate and the moving platen of mould being arranged on stationary mould for mould plate, is provided between battery lead plate and solid plate
Insulating barrier, battery lead plate are contacted with the die cavity of mould, and so when injecting melt in die cavity, the capacitance signal of mould inner capacitor can be sent out
Capacitance signal in mould inner capacitor is converted to corresponding voltage signal by raw corresponding change, capacitance measuring device, the voltage
Signal can be used for the state of melt in die cavity in the whole injection molding process of on-line checking.Melt sensor energy so in the mould
The capacitance variations enough brought using melt injection, carry out the state of melt in the whole injection molding process of on-line checking, and detection is melted
Body status information is continuous, abundant.Moreover, installing in the mould after melt sensor, mould cavity is still metal die cavity, will not be as phase
The intensity of die cavity is equally reduced in machine shooting glass die cavity technology, it is applied widely.
Embodiment two
The embodiments of the invention provide melt sensor-based system in a kind of mould, employs melt in the mould described in embodiment one and passes
Sensor, referring to Fig. 5, the system can include：Mould inner capacitor 1, capacitance measuring device 2 and processor 3.
Referring to Fig. 1, mould inner capacitor 1, by the battery lead plate 11 and the moving platen of mould being arranged on stationary mould for mould plate 100
200 are formed, and insulating barrier 12 are provided between battery lead plate 11 and solid plate 100, and battery lead plate 11 contacts with the die cavity 300 of mould.
In the present embodiment, the two poles of the earth of mould inner capacitor 1 are respectively battery lead plate 11 and moving platen 200, the one side of battery lead plate 11 and die cavity 300
Contact and other faces are completely cut off by insulating barrier 12 and solid plate 100.
Capacitance measuring device 2, it is connected with mould inner capacitor 1, for the capacitance signal in mould inner capacitor 1 to be converted into phase
The voltage signal answered, the voltage signal are used for the state of melt in die cavity 300 in the whole injection molding process of on-line checking.
Processor 3, it is connected with capacitance measuring device 2, for the voltage signal provided according to capacitance measuring device 2, online
Detect the state of melt in die cavity 300 in whole injection molding process.
In the present embodiment, whole injection molding process generally comprises：It is Guan Mo (or claim matched moulds), injection, pressurize, cold
But, the stage such as die sinking.I.e. polymeric particles reach flow regime (i.e. melt) by heating in barrel and have superior moldability,
Die cavity 300, the overall process deviate from after melt cooling sizing from mould are filled under the promotion of screw rod.Though said process lasts
It is short, but great changes will take place for state of the melt in die cavity 300, and these changes have conclusive influence to the quality of product.
Therefore the detection of melt state, the detection of state, most important to predicting and controlling product quality to have especially in die cavity 300
Effect.
In the present embodiment, mould is formed by the battery lead plate 11 and the moving platen 200 of mould being arranged on stationary mould for mould plate 100
The two poles of the earth of inner capacitor 1, solid plate 100 and the moving platen 200 respectively electric capacity of mould inner capacitor 1, the electric capacity C of mould inner capacitor 1
It can be calculated according to equation below：
Wherein, the dielectric constant of ε media between electric capacity the two poles of the earth, A are the relative area at electric capacity the two poles of the earth, and d is electric capacity the two poles of the earth
Between relative distance.
After mould closes mould, the A and d of the electric capacity of mould inner capacitor 1 are definite value, and from air to a part in die cavity 300
The state transformation of a part of melt of air, until melt is all in die cavity 300, in said process, the electric capacity intermediary of mould inner capacitor 1
The dielectric constant of matter is changing always, and with dielectric constant linear change occurs for the electric capacity C of mould inner capacitor 1, therefore,
Under different phase, the change of the electric capacity of mould inner capacitor 1, it can be melted according in whole injection molding process to obtain in die cavity 300
The state of body.
In the present embodiment, how processor 3 obtains the state of melt by voltage signal, has been done in embodiment one
It is discussed in detail, repeats no more here.
Alternatively, can include referring to Fig. 6, capacitance measuring device 2：
Convert of capacitor to voltage device 21, it is connected with mould inner capacitor 1, will be electric in mould in whole injection molding process
Capacitance signal on container 1 is converted into corresponding analog voltage signal.
Analog-digital commutator 22, it is connected with capacitance voltage converter 21, for collect capacitance voltage converter 21
Analog voltage signal is converted into corresponding digital voltage signal.
Data acquisition device 23, it is connected respectively with analog-digital commutator 22 and processor 3, for gathering analog-digital commutator
Digital voltage signal caused by 22, and transmit into processor 3, for mould in the whole injection molding process of the on-line checking of processor 3
The state of melt in chamber 300.
In the present embodiment, the capacitance measuring device 2 is simple in construction, practical.
Alternatively, battery lead plate 11 and end thereof contacts of the die cavity 300 away from injection hole, injection hole are to be connected simultaneously with die cavity 300
For the through hole of melt to be injected into die cavity 300 for mould.
In the present embodiment, the melt of die cavity 300 is usually and injected by injection hole, and is flowed in die cavity 300, until filling out
Full of whole die cavity 300, and the one end of die cavity 300 away from injection hole is for the last filling point of die cavity 300, works as melt contacts
During to the last filling point of die cavity 300, injection stage just finishes.Because the electric capacity of injection stage and packing stage is advanced the speed
Have very big difference, by battery lead plate 11 be arranged to end thereof contacts of the die cavity 300 away from injection hole, that is, cover die cavity 300 most
Filling point afterwards, it can be used for detecting the conversion time node between injection phase and packing stage.
Alternatively, battery lead plate 11 can use die steel material to prepare, i.e., with solid plate 100, moving platen 200 using same
Material prepare, and then reduce the installation of melt sensor in mould, the adverse effect carried to mould.
Alternatively, insulating barrier 12 can be prepared by aluminium oxide ceramics or zirconia ceramics so that and insulation effect is more preferable, and then
The Detection results of sensor are ensured.
Alternatively, capacitance measuring device 2 senses electric wire by antistatic and is connected with battery lead plate 11, can effectively reduce outside
Interference of the electrostatic to sensor measurement.
The embodiment of the present invention forms melt sensing system in mould by mould inner capacitor, capacitance measuring device and processor
System, wherein, mould inner capacitor is made up of the battery lead plate and the moving platen of mould being arranged on stationary mould for mould plate, battery lead plate and cover half
Insulating barrier is provided between plate, battery lead plate contacts with the die cavity of mould, so when injecting melt in die cavity, mould inner capacitor
Capacitance signal can occur to change accordingly, and the capacitance signal in mould inner capacitor is converted to corresponding voltage by capacitance measuring device
Signal, the voltage signal can be used for the state of melt in die cavity in the whole injection molding process of on-line checking.So in the mould
Melt sensor-based system can utilize the capacitance variations that melt injection is brought, and carry out melt in the whole injection molding process of on-line checking
State, the melt state information of detection are continuous, abundant.Moreover, installing in the mould after melt sensor-based system, mould cavity is still gold
Belong to die cavity, the intensity of die cavity will not be reduced as shooting in glass die cavity technology camera, it is applied widely.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
- A kind of 1. melt sensor in mould, it is characterised in that including：Mould inner capacitor (1), by the battery lead plate (11) and the moving platen of the mould being arranged on stationary mould for mould plate (100) (200) form, insulating barrier (12), and the battery lead plate are provided between the battery lead plate (11) and the solid plate (100) (11) contacted with the die cavity (300) of the mould；Capacitance measuring device (2), it is connected with the mould inner capacitor (1), for the electric capacity in the mould inner capacitor (1) to be believed Corresponding voltage signal number is converted to, the voltage signal is used for die cavity described in the whole injection molding process of on-line checking (300) state of interior melt.
- 2. melt sensor in mould according to claim 1, it is characterised in that the capacitance measuring device (2), including：Convert of capacitor to voltage device (21), it is connected with the mould inner capacitor (1), in whole injection molding process, by institute The capacitance signal stated on mould inner capacitor (1) is converted into corresponding analog voltage signal；Analog-digital commutator (22), it is connected with the capacitance voltage converter (21), for by the capacitance voltage converter (21) analog voltage signal collected is converted into corresponding digital voltage signal；Data acquisition device (23), it is connected respectively with the analog-digital commutator (22) and processor, for gathering the modulus Digital voltage signal caused by conversion equipment (22), and transmit into processor, for the whole injection molding of processor on-line checking During the interior melt of the die cavity (300) state.
- 3. melt sensor in mould according to claim 1, it is characterised in that the battery lead plate (11) and the die cavity (300) end thereof contacts away from injection hole, the injection hole is connect and is used for the confession mould to institute with the die cavity (300) State the through hole of injection melt in die cavity (300).
- 4. melt sensor in the mould according to claim any one of 1-3, it is characterised in that the battery lead plate (11) uses It is prepared by die steel material.
- 5. melt sensor in the mould according to claim any one of 1-3, it is characterised in that the insulating barrier (12) is by oxygen Change aluminium ceramics or be prepared by zirconia ceramics.
- 6. melt sensor in the mould according to claim any one of 1-3, it is characterised in that the capacitance measuring device (2) sense electric wire by antistatic to be connected with the battery lead plate (11).
- A kind of 7. melt sensor-based system in mould, it is characterised in that including：Mould inner capacitor (1), by the battery lead plate (11) and the moving platen of the mould being arranged on stationary mould for mould plate (100) (200) form, insulating barrier (12), and the battery lead plate are provided between the battery lead plate (11) and the solid plate (100) (11) contacted with the die cavity (300) of the mould；Capacitance measuring device (2), it is connected with the mould inner capacitor (1), for the electric capacity in the mould inner capacitor (1) to be believed Number be converted to corresponding voltage signal；Processor (3), it is connected with the capacitance measuring device (2), for the voltage provided according to the capacitance measuring device (2) Signal, the state of die cavity (300) interior melt described in the whole injection molding process of on-line checking.
- 8. system according to claim 7, it is characterised in that the capacitance measuring device (2), including：Convert of capacitor to voltage device (21), it is connected with the mould inner capacitor (1), in whole injection molding process, by institute The capacitance signal stated on mould inner capacitor (1) is converted into corresponding analog voltage signal；Analog-digital commutator (22), it is connected with the capacitance voltage converter (21), for by the capacitance voltage converter (21) analog voltage signal collected is converted into corresponding digital voltage signal；Data acquisition device (23), it is connected respectively with the analog-digital commutator (22) and processor (3), for gathering the mould Digital voltage signal caused by analog-to-digital conversion apparatus (22), and transmit into the processor (3), it is online for the processor (3) Detect the state of the interior melt of die cavity (300) described in whole injection molding process.
- 9. the system according to claim 7 or 8, it is characterised in that the insulating barrier (12) is by aluminium oxide ceramics or oxidation It is prepared by zircon ceramic.
- 10. the system according to claim 7 or 8, it is characterised in that the capacitance measuring device (2) passes through antistatic sense Electric wire is answered to be connected with the battery lead plate (11).
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| CN201610537950.7A CN107589154A (en) | 2016-07-08 | 2016-07-08 | Melt sensor and Mo Nei melt sensor-based systems in a kind of mould |
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| CN201610537950.7A CN107589154A (en) | 2016-07-08 | 2016-07-08 | Melt sensor and Mo Nei melt sensor-based systems in a kind of mould |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342514A (en) * | 2018-09-04 | 2019-02-15 | 东莞弗兰德通信科技有限公司 | The dielectric constant measurement method and device of dielectric plastic |
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