CN102582053A - Hot runner temperature control and warning method and control system utilizing same - Google Patents
Hot runner temperature control and warning method and control system utilizing same Download PDFInfo
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- CN102582053A CN102582053A CN2011100099386A CN201110009938A CN102582053A CN 102582053 A CN102582053 A CN 102582053A CN 2011100099386 A CN2011100099386 A CN 2011100099386A CN 201110009938 A CN201110009938 A CN 201110009938A CN 102582053 A CN102582053 A CN 102582053A
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Abstract
The invention discloses a hot runner temperature control and a warning method for a one-mould-with-multi-cavity injection moulding mould and a control system utilizing the same. The method comprises respectively arranging a temperature sensor at the same position in a plurality of mould cavities of the injection moulding mould, selecting one of the mould cavities to serve as a standard mould cavity, and setting a standard filling time, during each filling, calculating a different value between the filling time of the mould cavities and the standard filling time through a computing control module to serve as the basis for controlling a temperature adjusting device to adjust the temperature of the hot runner and serve as the basis for controlling a warning device to start. Therefore, the hot runner temperature control and warning method and the control system utilizing the hot runner temperature control and warning method not only can eliminate the influence of the outer side environment, but also can fast achieve flow balance of multiple cavities so as to reduce development time of a product and maintain quality of the product.
Description
Technical field
The present invention is relevant with the multi-point mould ejection formation, particularly about a kind of control system that is used for the control of hot runner temperature and the alarming method for power of multi-point mould injection shaping die and uses this method.
Background technology
Along with industries such as semiconductor, photoelectricity, communication develop rapidly; Market is to consumption electronic products, the multiplication of optical articles specification increasing demand of light, thin, high accuracy, exquisiteness property; Therefore domestic and international ejection formation factory begins to pay attention to the production technology of multi-point mould; Its advantage is and can manufactures a product in a large number at short notice, and then reduces the cost of product.Yet the multi-point mould ejection formation is but often filled imbalance because of each cave and is caused and defective such as shortly penetrate, warpage, each cave finished weight are inconsistent, and then reduces product percent of pass and elongate time of product development.
For addressing the above problem; United States Patent (USP) discloses a kind of method No. 7597827; Be to fill the terminal temperature sensor of installing,, solve each die cavity through adjustment hot runner temperature again and fill unbalanced problem with feedback temperature signal to hot runner temperature controller at the melten gel of each die cavity.In addition; External practitioner also proposes a kind of control method; Be with the fastest value of multimode cave filling time and the most slowly the mean value of value as the filling time standard; And in each filling back adjustment hot runner temperature, so that each die cavity filling time approach toward this mean value when filling, and then after repeatedly filling, reaching balance. next time
Yet preceding method is before reaching the flow equilibrium of many caves, and each filling all can produce a new mean value, and just, the filling time standard can constantly change, and receives the external environment influence of fluctuations easily; And the product that this poised state is made may produce error with user's requirement, therefore still again the adjusting process parameter just can let product quality meet the requirements; In other words, the product development of known multi-point mould ejection formation needs considerable time, and still can't guarantee the quality of product, thereby haves much room for improvement.
Summary of the invention
Because above-mentioned defective; Main purpose of the present invention is to provide a kind of control system that is used for the hot runner temperature-controlled process of multi-point mould injection shaping die and uses this method; Can eliminate the external environment influence; And can reach the flow equilibrium of multimode cave very soon, and then reduction time of product development.
For achieving the above object, the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die provided by the present invention, its step includes: a) same position is installed a temperature sensor respectively in a plurality of die cavitys of injection shaping die; B) selected these die cavitys one of them as a standard die cavity, and this standard die cavity is begun temperature sensor that fill material installed to this standard die cavity, and to touch the required time set of material be a standard filling time; C) material is filled to respectively this die cavity via the hot runner that is communicated with this die cavity respectively respectively; Measure beginning fill material to the set temperature sensor of this die cavity respectively and touch time of material; As filling time of this die cavity respectively; And calculate the respectively filling time of this die cavity and the difference of this standard filling time, poor as a filling time of this die cavity respectively; D), adjust the temperature of the hot runner that this die cavity is communicated with when these die cavitys when one of them filling time difference is greater than one first default value at least; And e), all is less than or equal to this first default value up to the filling time of this die cavity respectively difference repeating step c) to step d).
In addition; The present invention provides a kind of aforementioned control system that is used for the hot runner temperature-controlled process of multi-point mould injection shaping die that uses; Include: a plurality of temperature sensors are respectively applied for a plurality of die cavitys that are installed in injection shaping die, and produce a temperature signal respectively; One s operation control module is used to receive the temperature signal that these temperature sensors produce, and it is poor to calculate filling time of this die cavity respectively; And a temperature adjustment device, be used to receive this s operation control module controls and adjust respectively the temperature of the hot runner that is communicated with this die cavity respectively.
Thus; This control system and hot runner temperature-controlled process are being used in the Products Development stage, not only can eliminate the external environment influence, can also reach the flow equilibrium of many caves very soon; And the hot runner temperature parameter that it obtains at last can be so that the product made of each die cavity has satisfactory quality backward; Thereby can get into the steady production stage, in other words, this control system and hot runner temperature-controlled process can effectively reduce time of product development.
Of the present invention time a purpose is to provide a kind of control system that is used for the alarming method for power of multi-point mould injection shaping die and uses this method, can be used for the quality of monitoring product.
Be the realization above-mentioned purpose, the alarming method for power that is used for the multi-point mould injection shaping die provided by the present invention, its step includes: a) same position is installed a temperature sensor respectively in a plurality of die cavitys of injection shaping die; B) selected these die cavitys one of them as a standard die cavity, and this standard die cavity is begun temperature sensor that fill material installed to this standard die cavity, and to touch the required time set of material be a standard filling time; C) material is filled to respectively this die cavity via the hot runner that is communicated with this die cavity respectively respectively; Measure beginning fill material to the set temperature sensor of this die cavity respectively and touch time of material; As filling time of this die cavity respectively; And calculate the respectively filling time of this die cavity and the difference of this standard filling time, poor as a filling time of this die cavity respectively; And d) repeating step c) repeatedly, when these die cavitys at least one of them the continuous several times step c) the filling time difference that calculated during all greater than one second default value, start an alarming device.
In addition, the present invention provides a kind of and uses aforementioned this to be used for the control system of the alarming method for power of multi-point mould injection shaping die, and include: a plurality of temperature sensors are respectively applied for a plurality of die cavitys that are installed in injection shaping die, and produce a temperature signal respectively; One s operation control module is used to receive the temperature signal that these temperature sensors produce, and it is poor to calculate filling time of this die cavity respectively; And an alarming device, be used to receive this s operation control module controls and start.
Thus, this control system and alarming method for power can be used in the steady production stage of product, with in the quantity-produced process, let the user know product generation problem through the startup of this alarming device, to reach the function of monitoring product quality.The present invention not only can eliminate external environment influence, and can reach the flow equilibrium of many caves very soon, with the reduction time of product development, and can keep the quality of product.
About detailed construction, characteristics, assembling or the occupation mode that is used for the control of hot runner temperature and the alarming method for power of multi-point mould injection shaping die and uses the control system of this method provided by the present invention, will, describe follow-up embodiment in specifying.Yet those of ordinary skill should be able to be understood in field of the present invention, and the specific embodiment that these detailed descriptions and embodiment of the present invention are cited only is used to explain the present invention, is not to be used to limit claim scope of the present invention.
Description of drawings
Fig. 1 is the sketch map of the control system that one embodiment of the present invention provided; And
Fig. 2 is the schematic flow sheet of the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die that the preferred embodiment of the present invention provided.
[main element symbol description]
Control system 10
Temperature sensor 20
S operation control module 30
Temperature adjustment device 40
Alarming device 50
The standard filling time 60
Filling time 61,62,63,64
The first default value V1
The specific embodiment
Below will cooperate enclose graphic, specify technology contents of the present invention and characteristic through cited embodiment, wherein:
Fig. 1 is the sketch map of the control system that one embodiment of the present invention provided; And
Fig. 2 is the schematic flow sheet of the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die that the preferred embodiment of the present invention provided.
Please consult Fig. 1 earlier, the control system 10 that one embodiment of the present invention provided includes a plurality of temperature sensor 20, a s operation control module 30, a temperature adjustment device 40, and an alarming device 50.
This control system 10 is used to be installed in the identical die cavity (not shown) of a plurality of shapes; And a plurality of hot runner (not shown) that are communicated in these die cavitys respectively; These hot runners are respectively applied for the material process that supplies fusion and then are filled in these die cavitys, make these die cavitys can material forming be gone out the identical product of shape.
These temperature sensors 20 are respectively applied for the same position that is installed in these die cavitys, and present embodiment describes with four die cavitys, therefore should control system 10 include four temperature sensors 20.Respectively this temperature sensor 20 is installed in the end of material fill path in the die cavity; Reaching the 95-98% place with material filling in each die cavity is the best; When this temperature sensor 20 touched material, the temperature that it sensed can rise suddenly, represented that this die cavity almost filled completion.
This s operation control module 30 is used to receive the temperature signal that these temperature sensors 20 are produced, and fills with material to begin to calculate the respectively filling time of this die cavity to contact with this temperature sensor 20 time difference of (the moment rising of 20 sensed temperature of this temperature sensor) of material; In addition, this temperature adjustment device 40 is used to receive these s operation control module 30 controls and adjusts the respectively temperature of this hot runner.This alarming device 50 receives 30 controls of this s operation control module equally, is used to send a warning lamp optical signal, caution voice signal or other can be reminded user's signal, perhaps are used for directly stopping the running of production equipment.
Please consult Fig. 2 again, above-mentionedly should control system 10 can use a hot runner temperature-controlled process that is described below, with the process exploitation stage of the product that is applied to an ejection formation; The step of this hot runner temperature-controlled process includes:
A) same position is installed a temperature sensor 20 respectively in a plurality of die cavitys of injection shaping die.Have four die cavitys in the middle of the present embodiment.
B) selected these die cavitys one of them as a standard die cavity, and setting material, to fill the 20 contacted time differences of temperature sensor that begin to material and this standard die cavity are installed be a standard filling time 60.Wherein, this standard die cavity and standard filling time 60 can perhaps with the plastic properties operation method, perhaps be set from the method for establishing with the user through the mode of simulation and experiment.Present embodiment be with No. 2 die cavitys as the standard die cavity, and to fill required time sets with No. 2 die cavitys in advance be this standard filling time 60.
C) material is filled to respectively this die cavity via the hot runner that is communicated with this die cavity respectively respectively; Measure beginning fill material to the set temperature sensor 20 of this die cavity respectively and touch time of material; As filling time 61,62,63,64 of this die cavity respectively; And calculate the respectively filling time 61,62,63,64 of this die cavity and the difference of this standard filling time 60, poor as a filling time of this die cavity respectively.
D) when these die cavitys when one of them filling time difference is greater than one first default value V1 at least, the just temperature through the excessive hot runner that die cavity was communicated with of this 40 adjustment filling times of temperature adjustment device difference.The user can be set at any tolerance value that meets demand with this first default value V1; Perhaps; With this standard filling time 60 be the standard deviation that mean value calculation goes out these filling times 61,62,63,64, calculate permissible tolerance value as this first default value V1 with run-of-the-mill management (Quality Control or Quality Management) three times of standard deviations commonly used again; In addition; The purpose of this temperature adjustment device 40 adjustment hot runner temperature is in order to make to approach this standard filling time 60 die cavity that this hot runner is communicated with filling time when the next fill material; This temperature adjustment device 40 is controlled with Fuzzy control method by this s operation control module 30, but not as limit.
E), all be less than or equal to this first default value V1 up to the filling time of this die cavity respectively difference repeating step c) to step d).
Thus; These die cavitys promptly reach flow equilibrium, can produce to have quite conforming product, and these products all can meet user's requirement; Since aforementioned process with the same standard filling time 60 as the detection foundation; Can eliminate the external environment influence, the temperature parameter of therefore last resultant these hot runners promptly can repeated application utilize identical mould to make the technology of this product in other, makes this product can get into the steady production stage.
In the steady production stage; The user can also come the quality of monitoring product through the alarm function of this control system 10; Its method is: carry out injection molding and repeating step c continuously) repeatedly; Just, when each the filling, still measure the temperature in these die cavitys respectively, and calculate that respectively this die cavity is poor in the filling time of this time filling with these temperature sensors 20; When the filling time of same die cavity, the difference continuous several times was all greater than one second default value, this s operation control module 30 just started this alarming device 50 and sends alarm signal to carry out necessary detection and adjustment to the user.
Wherein, this second default value can be any tolerance value that meet demand identical or different with this first default value V1, perhaps can calculate according to three times of standard deviations equally.Thus; The user promptly can be known technology generation problem through the startup of this alarming device 50, and problem possibly betide this standard die cavity, then; The temperature of the hot runner that the user promptly can be communicated with through this temperature adjustment device 40 these standard die cavitys of adjustment is to recover the quality of product.
Moreover this control system 10 also can use these temperature sensors 20 and whether exceed its processing temperature scope with the temperature of detecting this material and getting into behind this die cavity respectively.Specifically, this alarming device 50 can be set at the temperature sensor 20 that same die cavity installs and when the continuous several times step c) all senses the temperature that exceeds a temperature range (i.e. the processing temperature scope of this material), starts.
Except the caution rule of aforementioned single die cavity, the present invention can also use the caution rule of a plurality of die cavitys.
This alarming device 50 can be set to: when the part die cavity of die cavity sum N/more than; Present embodiment is set N and is equaled three; When these die cavitys sum 1/3rd or more the continuous several times step c) filling time of being calculated start when differing from all greater than this second default value; Letting the user know has most die cavity generation problems, and then all hot runners are carried out the temperature adjustment.Aforementioned N value can be by the user according to demand change setting voluntarily.
In addition, this alarming device 50 also can be set in these temperature sensors 20 1/3 and when the continuous several times step c) all senses the temperature of the processing temperature scope that exceeds this material, starts; Thus, user's hot runner that promptly can be again be communicated with this standard die cavity or all hot runners are carried out the temperature adjustment.
The caution rule of aforementioned single die cavity monitoring or the monitoring of multimode cave, sending before the alarm signal continuous several times step c), to detect that unusual number of times sets with 3 times be the best.Certainly, also can set up any amount more than 2 times on their own by the user.
Through aforementioned should control system 10 and temperature-controlled process, the time of product development of multi-point mould ejection formation is shortened, can also keep the quality of product; And; Can learn that by above stated specification in product development stage, this control system 10 can not include this alarming device 50.In addition, in the product steady production stage, this control system 10 also can not include this temperature adjustment device 40; Specifically, this control system 10 can be used in an alarming method for power for the user, and its step does not include abovementioned steps d) and the hot runner temperature controlled processes of step e); And the hot runner temperature set-up procedure after wrong the generation; And only have the function of caution, carry out proper process in addition to notify the user, to recover the quality of product.
Be stressed that at this; Control of the present invention system 10 is that hot runner monitoring temperature and the operation method with the multimode cave is core; Main device is a plurality of temperature sensors 20 and this s operation control module 30; Can adjust function and this temperature adjustment device 40 of arranging in pairs or groups according to the needed hot runner temperature of user, or therefore this alarming device 50 of arranging in pairs or groups there is different embodiment with processing quality monitoring alarm function.
At last, must explain once more that the disclosed in the aforementioned embodiment composed component of the present invention is merely and illustrates, and is not to be used for limiting scope of the present invention, substituting or changing of other equivalent element also should be claim of the present invention and contains.
Claims (19)
1. hot runner temperature-controlled process that is used for the multi-point mould injection shaping die is characterized in that its step includes:
A) same position is installed a temperature sensor respectively in a plurality of die cavitys of injection shaping die;
B) selected these die cavitys one of them as a standard die cavity, and this standard die cavity is begun temperature sensor that fill material installed to this standard die cavity, and to touch the required time set of material be a standard filling time;
C) material is filled to respectively this die cavity via the hot runner that is communicated with this die cavity respectively respectively; Measure beginning fill material to the set temperature sensor of this die cavity respectively and touch time of material; As filling time of this die cavity respectively; And calculate the respectively filling time of this die cavity and the difference of this standard filling time, poor as a filling time of this die cavity respectively;
D), adjust the temperature of the hot runner that this die cavity is communicated with when these die cavitys when one of them filling time difference is greater than one first default value at least; And
E), all be less than or equal to this first default value up to the filling time of this die cavity respectively difference repeating step c) to step d).
2. the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die according to claim 1 is characterized in that, also includes after the step e):
F) repeating step c) repeatedly, when the continuous several times step c) calculates one of them filling time difference of these die cavitys all greater than one second default value, start an alarming device.
3. the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die according to claim 1 is characterized in that, also includes after the step e):
F) repeating step c) repeatedly, when one of them temperature sensor of being installed of these die cavitys when the continuous several times step c) all senses the temperature that exceeds a temperature range, start an alarming device.
4. the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die according to claim 1 is characterized in that, also includes after the step e):
F) repeating step c) repeatedly, when in these die cavitys 1/3 the continuous several times step c) the filling time difference that calculated during all greater than one second default value, start an alarming device.
5. the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die according to claim 1 is characterized in that, also includes after the step e):
F) repeating step c) repeatedly, when in these temperature sensors 1/3 when the continuous several times step c) all senses the temperature that exceeds a temperature range, start an alarming device.
6. according to each described hot runner temperature-controlled process that is used for the multi-point mould injection shaping die among the claim 2-5, it is characterized in that this alarming device starts when unusual detecting for continuous three times.
7. the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die according to claim 1 is characterized in that in the step a), respectively this temperature sensor is installed in the end of material fill path in the die cavity.
8. the hot runner temperature-controlled process that is used for the multi-point mould injection shaping die according to claim 7 is characterized in that, respectively this temperature sensor is installed in that material filling ratio reaches the 95-98% place in the die cavity.
9. one kind is used the control system that is used for the hot runner temperature-controlled process of multi-point mould injection shaping die according to claim 1, it is characterized in that, includes:
A plurality of temperature sensors are respectively applied for a plurality of die cavitys that are installed in injection shaping die, and produce a temperature signal respectively;
One s operation control module is used to receive the temperature signal that these temperature sensors produce, and it is poor to calculate filling time of this die cavity respectively; And
One temperature adjustment device is used to receive this s operation control module controls and adjusts respectively the temperature of the hot runner that is communicated with this die cavity respectively.
10. control according to claim 9 system is characterized in that, also includes an alarming device, is used to receive this s operation control module controls and starts.
11. an alarming method for power that is used for the multi-point mould injection shaping die is characterized in that, its step includes:
A) same position is installed a temperature sensor respectively in a plurality of die cavitys of injection shaping die;
B) selected these die cavitys one of them as a standard die cavity, and this standard die cavity is begun temperature sensor that fill material installed to this standard die cavity, and to touch the required time set of material be a standard filling time;
C) material is filled to respectively this die cavity via the hot runner that is communicated with this die cavity respectively respectively; Measure beginning fill material to the set temperature sensor of this die cavity respectively and touch time of material; As filling time of this die cavity respectively; And calculate the respectively filling time of this die cavity and the difference of this standard filling time, poor as a filling time of this die cavity respectively; And
D) repeating step c) repeatedly, when these die cavitys at least one of them the continuous several times step c) the filling time difference that calculated during all greater than one second default value, start an alarming device.
12. the alarming method for power that is used for the multi-point mould injection shaping die according to claim 11; It is characterized in that; In the step d), this alarming device when these die cavity sums 1/3 the continuous several times step c) the filling time difference that calculated start during all greater than one second default value.
13. one kind is used the control system that is used for the alarming method for power of multi-point mould injection shaping die according to claim 11, it is characterized in that, includes:
A plurality of temperature sensors are respectively applied for a plurality of die cavitys that are installed in injection shaping die, and produce a temperature signal respectively;
One s operation control module is used to receive the temperature signal that these temperature sensors produce, and it is poor to calculate filling time of this die cavity respectively; And
One alarming device is used to receive this s operation control module controls and starts.
14. an alarming method for power that is used for the multi-point mould injection shaping die is characterized in that, its step includes:
A) same position is installed a temperature sensor respectively in a plurality of die cavitys of injection shaping die, and selected these die cavitys one of them as a standard die cavity;
B) material is filled to respectively this die cavity via the hot runner that is communicated with this die cavity respectively respectively; And
C) repeating step b) repeatedly,, start an alarming device when these temperature sensors when one of them all senses the temperature that exceeds a temperature range in the continuous several times step b) at least.
15. the alarming method for power that is used for the multi-point mould injection shaping die according to claim 14; It is characterized in that; In the step c), this alarming device starts at least when these temperature sensor sums 1/3rd all sense the temperature that exceeds a temperature range in the continuous several times step b).
16., it is characterized in that this alarming device starts when unusual detecting for continuous three times according to each described alarming method for power that is used for the multi-point mould injection shaping die in the claim 11,12,14 and 15.
17. one kind is used the control system that is used for the alarming method for power of multi-point mould injection shaping die according to claim 14, it is characterized in that, includes:
A plurality of temperature sensors are respectively applied for a plurality of die cavitys that are installed in injection shaping die, and produce a temperature signal respectively;
One s operation control module is used to receive the temperature signal that these temperature sensors produce; And
One alarming device is used to receive this s operation control module controls and starts.
18., it is characterized in that in this step a), respectively this temperature sensor is installed in the end of material fill path in the die cavity according to claim 11 or the 14 described alarming method for power that are used for the multi-point mould injection shaping die.
19. the alarming method for power that is used for the multi-point mould injection shaping die according to claim 18 is characterized in that, respectively this temperature sensor is installed in that material filling ratio reaches the 95-98% place in the die cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100099386A CN102582053A (en) | 2011-01-11 | 2011-01-11 | Hot runner temperature control and warning method and control system utilizing same |
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| CN2011100099386A CN102582053A (en) | 2011-01-11 | 2011-01-11 | Hot runner temperature control and warning method and control system utilizing same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818346A (en) * | 2015-01-27 | 2016-08-03 | 双叶电子工业株式会社 | Measurement apparatus |
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Application publication date: 20120718 |