CN103108735A - High frequency dielectric heating device for thermosetting plastic material, and method for molding thermosetting plastic - Google Patents
High frequency dielectric heating device for thermosetting plastic material, and method for molding thermosetting plastic Download PDFInfo
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- CN103108735A CN103108735A CN201180044765XA CN201180044765A CN103108735A CN 103108735 A CN103108735 A CN 103108735A CN 201180044765X A CN201180044765X A CN 201180044765XA CN 201180044765 A CN201180044765 A CN 201180044765A CN 103108735 A CN103108735 A CN 103108735A
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/12—Dielectric heating
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
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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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
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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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/38—Heating or cooling
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
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- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Provided is a high frequency dielectric heating device for a thermosetting plastic material capable of heating more safely, more uniformly, and more rapidly compared to a device using microwave dielectric heating, and capable of forming a high quality thermosetting plastic. A high frequency dielectric heating device (1) can house a mold (M) in which a thermosetting plastic material is injected, and is provided with a high frequency wave generation unit (2) which generates high frequency waves so that the waves can be irradiated to the housed mold (M), and the thermosetting plastic material is subjected to dielectric heating by the irradiation of the high frequency waves to the mold (M). The high frequency wave generation unit (2) is provided with an electrode consisting of a lower electrode (4) and an upper electrode (5) which are arranged to supply high frequency waves to a carrying unit (3) which carries the mold (M).
Description
[technical field]
The present invention relates to the high-frequency induction heating apparatus of thermoset plastic material and the forming method of thermosetting plastics, it utilizes the eddy-current heating effect based on high frequency that thermoset plastic material is cured as specific shape and thermosetting plastics is carried out moulding.
[background technology]
As in the mould of using in moulding, thermoset plastic material being heated the gimmick that makes its curing, known have a device that utilizes microwave induced heating, in this device, to the thermoset plastic material irradiating microwaves, utilize the energy excitation of microwave to have the microvibration of the thermoset plastic material of polarity at intramolecule, make its heating and promote and solidify.Compare across the situation that mould conducts heating to thermoset plastic material with utilizing heater, utilize in the device of microwave induced heating, can carry out homogeneous heating to thermoset plastic material integral body, can prevent convection current generation, can shorten heat time heating time.
Due to such use the induction heating apparatus of thermoset plastic material of microwave (frequency 0.3GHz (gigahertz (GHZ))～about 300GHz) have advantages of above-mentioned, thereby multiple motion proposed, and on the other hand, the induction heating apparatus of the thermoset plastic material of use high frequency (frequency 3MHz (megahertz)～0.3GHz degree) is proposed, as similar device, namely the degree of following patent documentation 1, relate to the shaped device that has used rubber to make the thermoplastic resin of mould in this patent documentation 1.
[prior art document]
[patent documentation]
Patent documentation 1: TOHKEMY 2007-216448 communique
[summary of the invention]
[inventing problem to be solved]
If replace microwave with high frequency, due to the rectilinear propagation of high frequency, can consist of the less and safer induction heating apparatus of outside leakage, and its length of penetration to thermoset plastic material is darker, the induction heating apparatus that consists of can heat until the center more even and more quickly.
Therefore, the object of the present invention is to provide the high-frequency induction heating apparatus of thermoset plastic material and the forming method of thermosetting plastics, its actual constituting by high frequency is shone the induction heating apparatus that thermoset plastic material is carried out eddy-current heating, it can carry out Fast Heating safer and equably, can form high-quality thermosetting plastics.
[solving the means of problem]
In order to reach above-mentioned purpose, the described invention of technical scheme 1 is a kind of high-frequency induction heating apparatus of thermoset plastic material, it is characterized in that, this device possesses the high frequency generating unit, this high frequency generating unit can be received the mould that dress is injected with thermoset plastic material, the high frequency that generation can be shone this mould of receive dress; By above-mentioned mould being carried out above-mentioned high frequency irradiation, above-mentioned thermoset plastic material is carried out eddy-current heating.
Technical scheme 2,3 described inventions are above-mentioned inventions, wherein, except above-mentioned purpose, can realize the further purpose of good polymerization of quality in order to reach, it has following characteristics: this device further possesses be used to the mold temperature sensor of the temperature of measuring above-mentioned mould and following control device, in this control device, determine the output of above-mentioned high frequency based on the temperature that is obtained by this mold temperature sensor and mold temperature pattern predefined according to the kind of above-mentioned thermoset plastic material (the temperature パ タ ー Application) magnitude relationship that compares; Perhaps above-mentioned mold temperature sensor is measured the temperature of lower of above-mentioned mould.
Technical scheme 4,5 described inventions are above-mentioned inventions, wherein, except above-mentioned purpose, can to impose countermeasure at aspects such as heat releases and mould is carried out the purpose of effective eddy-current heating in order to reach, it has following characteristics: dispose heater in above-mentioned high frequency generating unit; Perhaps with the bottom of above-mentioned heater configuration in above-mentioned high frequency generating unit.
technical scheme 6, 7 described inventions are above-mentioned inventions, wherein, except above-mentioned purpose, in order to reach the purpose that to carry out the more good polymerization of quality, it has following characteristics: this device further possesses the generating unit temperature sensor that the temperature of above-mentioned high frequency generating unit is measured, and control device, the magnitude relationship that this control device compares based on the temperature that is obtained by this generating unit temperature sensor and generating unit temperature model predefined according to the kind of above-mentioned thermoset plastic material is determined the output of above-mentioned heater, above-mentioned generating unit temperature model and above-mentioned mold temperature pattern are equal to or on average lower than above-mentioned mold temperature pattern, perhaps above-mentioned generating unit temperature sensor is the temperature of lower sensor for the temperature of lower of measuring above-mentioned high frequency generating unit.
The described invention of technical scheme 8 is foregoing invention, wherein, except above-mentioned purpose, can be simply and the efficient purpose of carrying out well the polymerization that quality further improves in order to reach, it has following characteristics: this device further possesses be used to the heat-resistant resin spare that surrounds above-mentioned mould.
The described invention of technical scheme 9 is foregoing invention, wherein, except above-mentioned purpose, in order to reach degree that the capable of regulating temperature rises, can suitably to adjust reposefully degree that temperature rises, and can according to circumstances suitably adjust the quality of curing and the purpose of the balance of time according to the kind of thermoset plastic material etc., it has following characteristics: shine above-mentioned high frequency with pulse type.
The described invention of technical scheme 10 is foregoing invention, wherein, except above-mentioned purpose, in order to reach the purpose of the high frequency irradiation that can effectively carry out eddy-current heating and can realize physically pulse type, it has following characteristics: be provided with above-mentioned high frequency generating unit more than two.
The described invention of technical scheme 11 is above-mentioned invention, wherein, except above-mentioned purpose, but more well plural mould is carried out the purpose of high-frequency induction heating in order to reach efficient, it has following characteristics: this device further possesses the transport unit that plural above-mentioned mould is transmitted continuously to above-mentioned high frequency generating unit.
The described invention of technical scheme 12 is above-mentioned invention, wherein, except above-mentioned purpose, but forms well the purpose of the second best in quality plastic eyeglass lens in order to reach efficient, and it has following characteristics: above-mentioned mould is the eyeglass mould.
In order to reach above-mentioned purpose, the described invention of technical scheme 13 is the forming method of thermosetting plastics, it is characterized in that, the method possesses: the mould that will be injected with thermoset plastic material is received the receipts dress operation that is contained in the high frequency generating unit that produces high frequency and the high frequency irradiation process that above-mentioned mould is shone above-mentioned high frequency in above-mentioned high frequency generating unit, by in above-mentioned high frequency irradiation process, above-mentioned mould being carried out above-mentioned high frequency irradiation, above-mentioned thermoset plastic material is carried out eddy-current heating make its curing, obtain the thermoset plastic forming product.
Technical scheme 14,15 described inventions are above-mentioned inventions, wherein, except above-mentioned purpose, realize the further purpose of good polymerization of quality in order to reach, and it has following characteristics: the mold temperature sensor that is provided for measuring the temperature of above-mentioned mould; In above-mentioned high frequency irradiation process, the magnitude relationship that compares based on the temperature that is obtained by this mold temperature sensor and mold temperature pattern predefined according to the kind of above-mentioned thermoset plastic material is determined the output of above-mentioned high frequency; Perhaps above-mentioned mold temperature sensor is measured the temperature of lower of above-mentioned mould.
Technical scheme 16,17 described inventions are above-mentioned inventions, wherein, except above-mentioned purpose, can to impose countermeasure at aspects such as heat releases and mould is carried out the purpose of effective eddy-current heating in order to reach, it has following characteristics: be provided with heater in above-mentioned high frequency generating unit, make this heater running in above-mentioned high frequency irradiation process; Perhaps with the bottom of above-mentioned heater configuration in above-mentioned high frequency generating unit.
Technical scheme 18,19 described inventions are foregoing invention, wherein, except above-mentioned purpose, in order to reach the purpose that can carry out the more good polymerization of quality, it has following characteristics: the generating unit temperature sensor that is provided for measuring the temperature of above-mentioned high frequency generating unit; In above-mentioned high frequency irradiation process, the magnitude relationship that compares based on the temperature that is obtained by this generating unit temperature sensor and generating unit temperature model predefined according to the kind of above-mentioned thermoset plastic material is determined the output of above-mentioned heater; Above-mentioned generating unit temperature model and above-mentioned mold temperature pattern are equal to or on average lower than above-mentioned mold temperature pattern; Perhaps above-mentioned generating unit temperature sensor is the temperature of lower sensor for the temperature of lower of measuring above-mentioned high frequency generating unit.
The described invention of technical scheme 20 is foregoing invention, wherein, except above-mentioned purpose, can be simply and the efficient purpose of carrying out well the polymerization that quality further improves in order to reach, has following characteristics in foregoing invention: in above-mentioned receipts dress operation, above-mentioned mould receipts are contained in heat-resistant resin spare.
The described invention of technical scheme 21 is above-mentioned invention, wherein, except above-mentioned purpose, in order to reach degree that the capable of regulating temperature rises, can suitably to adjust reposefully degree that temperature rises, and can according to circumstances suitably adjust the quality of curing and the purpose of the balance of time according to the kind of thermoset plastic material etc., it has following characteristics: in above-mentioned high frequency irradiation process, with the above-mentioned high frequency of pulse type irradiation.
The described invention of technical scheme 22 is above-mentioned invention, wherein, except above-mentioned purpose, in order to reach the purpose of the high frequency irradiation that can effectively carry out eddy-current heating and can realize physically pulse type, it has following characteristics: be provided with above-mentioned high frequency generating unit more than two.
The described invention of technical scheme 23 is above-mentioned invention, wherein, except above-mentioned purpose, but more well plural mould is carried out the purpose of high-frequency induction heating in order to reach efficient, it has following characteristics: it further possesses the transmission operation that plural above-mentioned mould is transmitted continuously to above-mentioned high frequency generating unit.
The described invention of technical scheme 24 is foregoing invention, wherein, except above-mentioned purpose, but carries out well the purpose of the curing of the second best in quality plastic eyeglass lens in order to reach efficient, and it has following characteristics: above-mentioned thermoset plastic forming product are eyeglass.
[effect of invention]
The effect that the present invention plays is that a kind of high-frequency induction heating apparatus of thermoset plastic material and the forming method of thermosetting plastics can be provided, described device possesses the high frequency generating unit, this high frequency generating unit can be received and fill the mould that is injected with thermoset plastic material, the high frequency that generation can be shone this mould of receive dress, by carry out the moulding of thermosetting plastics based on the eddy-current heating of high frequency, thereby compare with the eddy-current heating based on microwave irradiation, can carry out safer and equably Fast Heating.
[description of drawings]
In Fig. 1, (a) be the schematic diagram of the high-frequency induction heating apparatus of the 1st mode of the present invention, (b), (c) be the schematic diagram of the high-frequency induction heating apparatus of the 3rd, the 4th mode of the present invention.
Fig. 2 is for showing in embodiment 1～4 (comparative example 1) curve map of the relation of institute's elapsed time and mould temperature outside from high frequency (microwave) irradiation begins.
In Fig. 3, (a) be the schematic diagram of the high-frequency induction heating apparatus of the present invention's the 5th mode, (b) for schematically showing target product temperature in (a) and the curve map of target lower electrode temperature.
Fig. 4 is the curve map of temperature and high-frequency electric power in target product temperature that embodiment α and embodiment 5 are shown, target lower electrode temperature, stove.
Fig. 5 is the curve map of target product temperature, target lower electrode temperature and high-frequency electric power that embodiment β and embodiment 6 are shown.
Fig. 6 is the curve map of temperature and high-frequency electric power in target product temperature that embodiment 7 and embodiment γ are shown, target lower electrode temperature, stove.
Fig. 7 is the curve map of temperature and high-frequency electric power in target product temperature that embodiment 7 and embodiment δ are shown, target lower electrode temperature, stove.
[specific embodiment]
Below suitably describe based on the example of accompanying drawing to embodiment of the present invention.Need to prove, mode of the present invention is not limited to these examples.
[the 1st mode]
As shown in Fig. 1 (a), the high-frequency induction heating apparatus 1 of the thermoset plastic material of the present invention's the 1st mode possesses high frequency generating unit 2 and transport unit 3 (belt conveyor, roller etc.), this transport unit 3 is configured according to the mode of inside that can be by high frequency generating unit 2, can transmit continuously the mould M (parent form) that is incorporated with thermoset plastic material.
High frequency generating unit 2 produces frequency electromagnetic waves, can consist of with various high frequency generation devices.High frequency generating unit 2 possesses as the lower electrode 4 of electrode and upper electrode 5, is configured according to the mode that transport unit 3 is clipped in the middle.High frequency vibrates between lower electrode 4 and upper electrode 5, carries out the high frequency irradiation for the object between them, mould M that thermoset plastic material namely is housed.Need to prove, so-called high frequency refers to the electromagnetic wave that frequency is 3MHz～0.3GHz left and right, can suitably be set as the degree of the frequency 3MHz that comprises the quasi-microwave wave band～1GHz or make the upper limit of frequency and lower limit fluctuates etc. accordingly.
For the mould M that is incorporated with thermoset plastic material, be sent to (transmission operation) in high frequency generating unit 2 by transport unit 3, shining (high frequency irradiation process) afterwards to be stopped and only to accept the high frequency of stipulated time by the state of receipts dress (receiving the dress operation), send from high frequency generating unit 2, suitably deliver to (secondary transmission operation) in not shown charger.Thermoset plastic material and mould M are heated because high frequency directly vibrates when high frequency shines, compare across the conduction heating that mould M carries out from the hot blast of heater with being used to of having, can carry out at short notice homogeneous heating, and compare with the microwave of high frequency, length of penetration is larger, heating more uniformly in the time of can carrying out thus than the existing heating that utilizes microwave irradiation.And, the height of the rectilinear propagation during due to high frequency, compare with the situation of existing microwave, electromagnetic-wave leakage from high frequency generating unit 2 is few, can make environmental performance more good, can more effectively heat, even in the situation that with its part that is assembled in the transport unit 3 that shares with other operation, also can make it can bring impact to other operation hardly.
In high frequency irradiation (high frequency that carries out to mould M or thermoset plastic material is supplied with), can change according to the time of the output intensity of high frequency, irradiation time, output intensity, the distance of lower electrode 4 or upper electrode 5, mould M (thermoset plastic material) are apart from distance, the thermoset plastic material of lower electrode 4 and sneak into any one in the key element of kind, additive concentration and so on of additive (catalyst etc.) wherein and set other key element, particularly preferably the time variation according to output intensity is pulse type, sends discontinuously strong output.For example, carry out irradiation in 30 seconds with maximum output, stop thereafter output in 1 minute, repeatedly carry out this process.So by high frequency is exported with pulse type, during than Continuous irradiation, the possibility of the generation of incipient scorch, muddiness or brush line in the time of can reducing the curing due to thermoset plastic material or mould M are sharply heated.Need to prove, in the exporting change of pulse type, comprise the situation that intermittently gives stronger output, keeps betwixt weak output, also comprise the big or small time dependent situation of this strong output or weak output, also comprise the time dependent situation in interval of strong output.
Thermoset plastic material in mould M obtains the thermoset plastic forming product according to the shape of mould M owing to being subject to such eddy-current heating or from the heat transfer of mould M and polymerization and producing is solidified, having become thermosetting plastics.
[the 2nd mode]
The 2nd mode of the present invention that obtains as the 1st mode is changed can be enumerated to be provided with the high frequency generating unit 2 of (multistage) more than two and be the high-frequency induction heating apparatus of formation.Be two when above making like this high frequency generating unit 2, but efficient heat well, easily be adapted to continuous transport unit 3.In addition, can utilize high frequency generating unit 2 or movement therebetween that high frequency is used with pulse type.That is, in high frequency generating unit 2, be subject to the high frequency irradiation as mould M; , do not shone by high frequency between high frequency generating unit 2 time along with transmission, therefore, along with transmission, shine the high frequency of pulse type.Also can move to ensuing high frequency generating unit 2 with after pulse type irradiation high frequency in high frequency generating unit 2, comprehensively impose the pulse type irradiation.
[the 3rd mode]
Similarly, as the 3rd mode, can enumerate high-frequency induction heating apparatus 1a, as shown in Fig. 1 (b), wherein, electrode 4a and electrode 5a are configured and become high frequency generating unit 2a along transport unit 3, due to the rectilinear propagation of high frequency, even high frequency is also almost all exported between electrode 4a and electrode 5a in such configuration.In addition, in the configuration of transport unit 3, also can with electrode 4a and electrode 5a be configured in the top (mould M side) of transport unit 3 and be not to be depicted as the below (opposition side of mould M) of transport unit 3 as Fig. 1 (b).
[the 4th mode]
In addition, as the 4th mode, as shown in (c) in Fig. 1, can enumerate following high-frequency induction heating apparatus 1b, it is configuring high-frequency generating unit 2 in case X, and plural mould M is heated side by side.In the situation that carry out eddy-current heating in case X, if utilize microwave, produce skewness in case X like this, be difficult to similarly plural mould M or thermoset plastic material be heated; But when utilizing high frequency, due to its rectilinear propagation, the irradiation that is subject in case X is even, all can heat on an equal basis arbitrary mould M or thermoset plastic material, due to the larger length of penetration for this object, can carry out equably eddy-current heating to each mould M and thermoset plastic material equably.In addition, as the modification of above-mentioned or following each mode, can enumerate following manner: omit transport unit 3, utilize operator's manual working or utilize chuck etc. that heating target is come in and gone out in high frequency generating unit 2.
[the 5th mode]
The 5th mode of the present invention in Fig. 3 shown in (a) also similarly consists of with the 1st mode.If the difference of main explanation and the 1st mode, in high-frequency induction heating apparatus 1c, dispose the plate (プ レ ー ト that silicones (it is a kind of for heat-resistant resin) is made around mould M) 6, high frequency generating unit 2 is configured according to the mode that contacts with mould M or plate 6.
Plate 6 is born the task of thermal insulating material by surrounding mould M.Need to prove, in heat-resistant resin, also can not adopt silicones and adopt fluororesin take polytetrafluoroethylene (PTFE) as representative etc., perhaps use above-mentioned fluororesin etc. together with silicones.In addition, plate 6 can only surround mould M side or its part, can only cover upside and/or downside, also can surround integral body.Further, from the aspect of heat insulating ability, preferred plate 6 also contacts with lower electrode 4 and/or upper electrode 5, but also can according to they in a side or the mode that both are separated be configured.In addition, the receipts dress of mould M in plate 6 can utilize operating personnel's manual working to carry out, but also can make high frequency generating unit 2 switches, utilizing the transmission such as mechanical hand to receive dress section carries out, wherein, manipulator is with the receipts of the mould M of the plate 6 of the inside of mould M relative high frequency generating unit 2 dress part (along the hole of mould M or recess etc.) turnover.
In addition, be assembled with heater 7 at the lower electrode 4 for high frequency generating unit 2 bottoms.Heater 7 is the heater of self-heating, adopts heating wire herein.In addition, as heater 7, also can not use heating wire or adopt the warm braw generator or warm water pipe arrangement or their combination etc. together with heating wire.
Further, contact, be used for the mold temperature sensor 8 of the temperature of instrumentation contact point with the lower central of mould M in plate 6 bottoms settings.Be provided in addition the generating unit temperature sensor of the central temperature of instrumentation lower electrode 4, as the lower electrode temperature sensor 9 of temperature of lower sensor.Need to prove, in the situation that mould M is a plurality of, can only mold temperature sensor 9 is set and uses this temperature at arbitrary mould M, perhaps also can measure the temperature of some or all of mould M, use their mean temperature.And, from the aspect of the impact that suppresses high frequency or from the aspect of the peripherad heat release of suitable assurance, mold temperature sensor 8 and lower electrode temperature sensor 9 can be configured in the bottom, also can be configured in beyond the bottom such as upper electrode 5.
High frequency generating unit 2, heater 7, mold temperature sensor 8 and lower electrode temperature sensor are connected and are connected with not shown control device.In addition, control device possesses not shown timer.
Control device is controlled high frequency generating unit 2, makes the temperature (products temperature) of mould M corresponding with heat time heating time as shown in solid line in Fig. 3 (b).Namely, in control device, elapsed time shown in the timer that will turn round from beginning to heat brings into the specific formula corresponding with Fig. 3 (b), resulting target product temperature and the instrumentation products temperature that is obtained by mold temperature sensor 8 are compared, if the instrumentation products temperature surpasses the target product temperature, reduce or stop the output of high frequency generating unit 2; If the instrumentation products temperature lower than the target product temperature, increases the output of high frequency generating unit 2.In other words, according to make illustrate the heat time heating time-line (curve map of the target product temperature of the function take heat time heating time as variable) of relation of target product temperature is AD HOC (パ タ ー Application) set (mold temperature pattern), control high frequency generating unit 2 by this pattern.
Need to prove, products temperature is controlled can carry out various changes as following example.When reducing the temperature of particular value at the target product temperature, further improve output.When reducing the temperature of particular value further, further improve output etc., make being converted to of output multistage.In the situation that improve the target product temperature, also similarly control with situation about reducing.Make high frequency generating unit 2 be output as function corresponding to the temperature difference of target product temperature and instrumentation products temperature or the magnitude relationship of target temperature and instrumentation products temperature etc.
Target product temperature (AD HOC) is as follows: in the last stage, intensification degree and products temperature recruitment every the unit of regulation heat time heating time are proportionate relationship; At after-stage, and irrespectively keep uniform temperature heat time heating time.For in products temperature recruitment of last stage of AD HOC etc., at first the thermoset plastic material that is considered as heating target is solidified and is set at the good state of quality (do not produce the muddy fragment of brush line etc. state), and next is considered that heat time heating time is short, can solidify rapidly heating target and set.Need to prove, within the last stage, multiple conversions can be carried out once or carry out to the products temperature recruitment; At after-stage, can make it to become sine wave or square wave and so on when averaging be certain value the heat time heating time-the target product Temperature Distribution.And products temperature recruitment etc. can consider in the lump that also other key element sets.
In addition, control device is controlled heater 7, makes the lower electrode temperature corresponding with heat time heating time as shown in the dotted line of (b) in Fig. 3.Namely, compare for the target lower electrode temperature that is obtained by the heating elapsed time and the instrumentation lower electrode temperature that is obtained by lower electrode temperature sensor 9, if instrumentation lower electrode temperature surpasses target lower electrode temperature, the output of control device reduction or stopped heating device 7; If instrumentation lower electrode temperature is lower than target lower electrode temperature, control device increases the output of heater 7.In other words, with demonstrate the heat time heating time-line (as the curve map of the target lower electrode temperature of the function take heat time heating time as variable) of relation of target lower electrode temperature is set as AD HOC (generating unit temperature model, temperature of lower pattern), along this pattern control heater 7.
Target lower electrode temperature (AD HOC) is as follows: in the last stage, intensification and lower electrode temperature recruitment every the unit of regulation heat time heating time are proportionate relationship; At after-stage, and irrespectively keep uniform temperature heat time heating time.For in lower electrode temperature recruitment of last stage of AD HOC etc., similarly set with products temperature recruitment etc., but time that should the last stage suitably is shorter than the situation of target product temperature.And the temperature of the after-stage of AD HOC suitably is set as the situation lower than the target product temperature.
Thus, in target lower electrode temperature, by the time that shortens the last stage (temperature rise period) or the design temperature that reduces after-stage (temperature maintenance stage), can make being heated as with respect to the auxiliary heating (on average following lower than being equal to) based on the heating of high frequency based on heater 7.As long as based on the heating of heater 7 and high-frequency heating is equal to or on average lower than high-frequency heating, its part also can greater than the heating based on high frequency.Utilization replenishes based on the auxiliary heating of heater 7 and escapes into the heat that the below is located around waiting in situation about only utilizing based on the heating of high frequency, and the heating that is used for solidifying mainly utilizes high frequency to carry out.Herein, due on the floor or the platform place carry out the setting of device, spill around up and down based on the heat of high frequency etc.
Need to prove, control to control with products temperature based on the temperature of the lower electrode temperature of heater 7 and have same modification.And, also can make products temperature recruitment and lower electrode temperature recruitment inconsistent as shown in Fig. 3 (b), and make lower electrode temperature recruitment less than the products temperature recruitment.Further, also can carry out the temperature control of heater 7 based on the instrumentation products temperature that is obtained by mold temperature sensor 8, in this case, can omit lower electrode temperature sensor 9.
[embodiment]
Embodiments of the invention and comparative example then are shown.But embodiment not delimit the scope of the invention.
[embodiment 1～4 comparative example 1]
" each formation etc. "
Use the high frequency generation device in above-mentioned the 1st mode to consist of high frequency generating unit 2, the mould M that is incorporated with thermoset plastic material is put in high frequency generating unit 2, shine high frequency under various settings.Mould M is eyeglass model (diameter 83mm (millimeter) the center thickness 5mm number of degrees 0), and thermoset plastic material is the polyurethane moulded monomer of using.Be mixed with in addition the polymerization of promotion monomer or the catalyst (tin series catalysts or amine series catalysts) of curing.
Wherein, in embodiment 1, making inter-electrode voltage is that 4500V (volt), anode current are that 0.36A (ampere), interelectrode distance are 90mm, producing frequency is the high frequency of 70MHz, mould M is configured in position apart from downside electrode (high frequency generating unit 2) 30mm, 40 minutes high frequencies of Continuous irradiation.In addition, catalyst concn is 600ppm (PPM).
In addition, in embodiment 2,23 minutes high frequencies of Continuous irradiation under similarly to Example 1 condition except as follows.That is, making anode current is 0.38A, and making mould M is 47mm apart from the distance of downside electrode.
Further, in embodiment 3, making inter-electrode voltage is that 4500V, anode current are that 0.45A, interelectrode distance are 80mm, and it is the high frequency of 70MHz that pulse type produces frequency, mould M is configured in position apart from downside electrode 30mm, 120 minutes high frequencies of intermittent irradiation.Herein, in the generation of high frequency, repeatedly shine after 30 seconds and stop the circulation of 1 minute.In addition, catalyst concn is 300ppm.
In addition, in embodiment 4, at similarly to Example 1 75 minutes high frequencies of condition intermittent irradiation except as follows.That is, making catalyst concn is 600ppm.
On the other hand, in comparative example 1, do not shine high frequency and 20 minutes following microwaves of Continuous irradiation.That is, the frequency of microwave is 2.45GHz (2450MHz), power 560W (watt).
" polymerization situation etc. "
The form that gathers of the result under above-mentioned condition and this condition (quality of curing and speed) is illustrated as following [table 1].In addition, under each condition from the temperature outside of irradiation beginning time institute's elapsed time [divide] and mould M [℃] relation be shown in Fig. 2.
[table 1]
In embodiment 1, by 40 minutes high frequencies of Continuous irradiation, utilize roughly 40 minutes (adding cool time) to make as polyurethane moulded the generation with monomer of thermoset plastic material and solidify, formed the transparent glasses eyeglass (relative evaluation in the time fences of [table 1] is expressed as A (outstanding)) as the thermoset plastic forming product.And, if be concatenated to form eyeglass, find to have produced the brush line of minority and produced edge chips, but only be sub-fraction (being expressed as B (well) in the quality hurdle of [table 1]).For the variations in temperature outside the condition bed die M of embodiment 1, as shown in Figure 2, temperature roughly rises pro rata with the time, is that the mould M of 26 ℃ was 216 ℃ during beginning after 40 minutes.
In embodiment 2, by 23 minutes high frequencies of Continuous irradiation, utilize roughly to form transparent glasses eyeglass (time A+ (extremely outstanding)) in 23 minutes.And, if be concatenated to form eyeglass, find to have produced similarly to Example 1 brush line and the edge chips (quality B) of minority.For the variations in temperature (Fig. 2) outside the condition bed die M of embodiment 2, similarly to Example 1, but the temperature rising more sharply, is that the mould M of 26 ℃ was 216 ℃ during beginning after 23 minutes.
In embodiment 3, by 120 minutes high frequencies of intermittent irradiation, utilize roughly to form transparent glasses eyeglass (time B) in 120 minutes.And, even be concatenated to form eyeglass, almost do not find the generation (quality A+) of brush line and edge chips yet.Variations in temperature (Fig. 2) outside the condition bed die M of embodiment 3 is rising more stably, the temperature that is average 1 ℃～2 ℃ in 1.5 minutes (90 seconds) for 1 circulation of pulse type irradiation rises, and is that the mould M of 27 ℃ was 70 ℃ during beginning after 75 minutes.In addition, second half section (after having passed through 40 minutes periods constantly), temperature-rise ratio is slower.In addition, shown in Fig. 2 until through after 75 minutes.
In embodiment 4, by 75 minutes high frequencies of intermittent irradiation, utilize roughly to form transparent glasses eyeglass (time B) in 75 minutes.And, when being concatenated to form eyeglass, although produced slight muddiness in sub-fraction, almost do not find the generation (quality A) of brush line or edge chips.Under the condition of embodiment 4, the variations in temperature (Fig. 2) outside mould M is same with embodiment 3, but has larger temperature to rise, and the temperature that was average 2 ℃～3 ℃ at 1.5 minutes rises, and is that the mould M of 26 ℃ was 102 ℃ during beginning after 75 minutes.In addition, compare with embodiment 3, in the second half section, along with the process of time, temperature also together rises.
In comparative example 1, by 20 minutes microwaves of Continuous irradiation, utilize roughly to form eyeglass (time A+) in 20 minutes.But, when being concatenated to form eyeglass, produced brush line, edge chips, produced in addition incipient scorch (quality C (not reaching level)).For the variations in temperature (Fig. 2) in the outside of the mould M under comparative example 1 condition, more violent in 10 minutes initial temperature-rise ratio embodiment 1, be 154 ℃, keep thereafter the temperature of equal extent, be 148 ℃ after 20 minutes.In addition, in comparative example 1, the temperature distributing disproportionation of mould M inside is even, and the central part of mould M is than the temperature height at other place etc., produces heating uneven.
" summarizing investigation etc. "
Above, in utilizing the eddy-current heating of high frequency, can carry out polymerization with monomer to polyurethane moulded, form the eyeglass (embodiment 1～4) as polyurethane moldings.Higher than microwave, thereby can reduce the outside restriction of leaking or shining the place due to the rectilinear propagation of high frequency; Different from comparative example 1, can make temperature and elapsed time increase etc. pro rata, heat by effective irradiation.Further, because high frequency is darker than microwave to the length of penetration of object, thereby can permeate deeplyer until the eddy-current heating at center to thermoset plastic material, and can promote the homogeneous reaction of monomer, can provide quality high and solidify fast by uniform heating.
In addition, when the Continuous irradiation high frequency, although can form fast, yield rate poor (embodiment 1～2); If with pulse type intermittent irradiation high frequency, although polymerization is comparatively slow, can form eyeglass (embodiment 3～4) high-qualityly.
Particularly in the situation that shine with pulse type as embodiment 3～4, can adjust the degree that temperature rises, can suitably adjust reposefully according to the kind of thermoset plastic material and the size of mould M etc. the degree of temperature rising.Utilize the irradiation of pulse type, carry out the heating of mould M itself and the heating of thermoset plastic material when strong output, promote polymerization, when low (nothing) exported, under the state that is only waste heat or thermoset plastic material mould M self heat release, prevent that polymerization from sharply carrying out, compare with the situation of Continuous irradiation, but moderate inhibition temperature climb acceleration can carry out the polymerization progress of resiliency, helps the good of the quality of polymerization or thermosetting plastics quality.In addition, due to the degree that the capable of regulating temperature rises, can according to circumstances make the quality of formation and the balance of time (making quality is that level is above and make time shorten) suitable, can shorten hardening time.
[embodiment 5～7 embodiment α～δ]
" each formation etc. "
In above-mentioned the 5th mode, form embodiment 5 under the condition identical with above-described embodiment 1.In embodiment 5, configure the plate 6 that silicones is made around mould M.In addition, by the state (pattern P1, mold temperature pattern) shown in Fig. 4 " target product temperature ", high frequency generating unit 2 is controlled, by the state (pattern Q1, generating unit temperature model) shown in " target lower electrode temperature ", heater 7 is controlled.Need to prove, for the intensification of last stage of pattern Q1, be every through improving 5 ℃ stepped 20 minute heat time heating time, but the intensification of the last stage of its average and target product temperature is equal to.
On the other hand, as embodiment α, it is identical with embodiment 5, but it has omitted heater 7 and lower electrode temperature sensor 9 in forming.
In addition, as embodiment β, it is identical with embodiment 5, but in its formation, mold temperature sensor 8 is configured in the center upper portion of mould M.In addition, as shown in Figure 5, making the pattern of " target lower electrode temperature " is to improve stepped (the pattern Q2) of 2.5 ℃ every heat time heating time through 10 minutes.
On the other hand, as embodiment 6, it is identical with embodiment 5, but it is made as pattern Q2 with the pattern of " target lower electrode temperature " in forming.
Further, as embodiment 7, it is identical with embodiment 5, is pattern P2 shown in Figure 6 but make the pattern of " target product temperature " in its formation.In pattern P2, the target product temperature at initial stage (0 minute time) is 30 ℃, 130 minutes 96 ℃ make the products temperature recruitment that growth slightly be arranged, 180 minutes 140 ℃ the temperature rise period is stopped.
In addition, as embodiment γ, it is identical with embodiment 7, but has omitted the plate 6 as thermal insulating material (heat-resistant resin spare) in its formation.
In addition, as embodiment δ, it is identical with embodiment 7, is pattern P3 shown in Figure 7 but make the pattern of " target product temperature " in its formation.In pattern P3, the target product temperature at initial stage is 30 ℃, 90 minutes 76 ℃ make the products temperature recruitment that growth slightly be arranged, 150 minutes 140 ℃ the temperature rise period is stopped.In addition, in Fig. 7, put down in writing in the lump the pattern P2 of embodiment 6 " target product temperature ".In addition, in comparative example 4, making the pattern of " target lower electrode temperature " is pattern Q3 shown in Figure 7.
Need to prove, embodiment α～δ is the embodiment of above-mentioned the 1st mode etc., but it may not be to be the embodiment (being comparative example with respect to the 5th mode) of the 5th mode.
" polymerization situation etc. "
The form that gathers of the curing situation in above-described embodiment etc. is illustrated as following [table 2].In addition, be shown in Fig. 4～Fig. 7 with the relation of high-frequency electric power [W] heat time heating time [dividing] in each embodiment etc.In addition, illustrate in the lump as temperature in the stove of the temperature between lower electrode 4 and upper electrode 5 [℃] variation.In Fig. 4～Fig. 7, the numerical value of the longitudinal axis by electrical power [W] and temperature [℃] share.
[table 2]
| ? | Quality | Speed |
| Embodiment 5 | A++ | B- |
| Embodiment 6 | A++ | B- |
| Embodiment 7 | A++ | B |
| Embodiment α | B | B- |
| Embodiment β | B | B- |
| Embodiment γ | A+ | B |
| Embodiment δ | B | B |
In embodiment α (Fig. 4), about high frequency output, for improving (lower than the target product temperature) or reducing (more than the target product temperature), it is zigzag on its microcosmic, but on macroscopic view, after rising to about initial 25W, the target product temperature rises along the mode of proportional rising, when the target product temperature is certain (after-stage), be roughly certain after decline.In addition, in high frequency output, have in the rise first half section of (last stage) of target product temperature the period (approximately 30 minutes～120 minutes) that is roughly certain.
On the other hand, in embodiment 5 (Fig. 4), be identical about high frequency output with embodiment α, but electrical power is the 20W left and right roughly All Time is lower.Need to prove, in the stove of Fig. 4, temperature is the situation of embodiment 5, and is almost identical in embodiment α.
Be same degree (quality B) in the performance of embodiment α and above-described embodiment 1,2.On the other hand, for the performance of embodiment 5, even when being concatenated to form eyeglass, than embodiment 3, also do not see the generation of brush line or edge chips, the uniformity of transparency or polymerization also more is better than embodiment 3 (quality A++).
Such quality discrepancy is mainly owing to having or not heater 7 to bring.That is, without heater 7, thereby heated by high frequency till heat unit is divided in embodiment α, relatively be difficult to promote the needed steady heating to heating target of homogeneous polymerization.On the other hand, in embodiment 5, owing to being provided with the heater 7 that high-frequency heating is carried out complementary effect, thereby can utilize the heating of heater 7 more effectively to replenish heat release, can concentrate on adding of heating target and hanker exporting under state stably high-frequency heating with this part, can promote the polymerization that quality is very good.
In addition, for polymerization time, being approximately 240 minutes in embodiment 5, α, although be not to be embodiment 1,2 degree, is also the abundant situation (speed B-) of reality.With speed, slow comparing arranged slightly, rising to of quality is great.
On the other hand, in embodiment β (Fig. 5), about high frequency output, be same variation with embodiment 5.But in the early stage, high frequency output (5 minutes reach the degree of 40W) more sharp rises.In addition, in the first half section (approximately 5 minutes～80 minutes) of target product temperature ascent stage (last stage), high frequency output continues as higher state (30W left and right).
On the other hand, in embodiment 6 (Fig. 5), about high frequency output, also be same variation with embodiment 5.But different from embodiment β in the first half section of last stage, it keeps the lower high frequency output of 20W left and right.Need to prove, for the rising at high frequency output initial stage, embodiment 6 is also steady than embodiment β.
Such difference is mainly that the configuration due to mold temperature sensor 8 brings.Namely, in embodiment β, mold temperature sensor 8 is according to can the mode that the temperature of mould M center upper portion is measured being configured, thereby can hold more definitely mould M based on heating situation and the heat release situation of high frequency, particularly last stage (first half section) high frequency output in heating is larger, is difficult to carry out high-frequency heating (quality B) stably in the first half section of polymerization.On the other hand, in embodiment 6, mold temperature sensor 8 is according to can the mode that the temperature of mould M lower central is measured being configured, thereby can more positively hold the heating situation of the heat release of escaping around comprising from the below etc., can continue to carry out reposefully high-frequency heating (quality A++) at the All Time that comprises polymerization first half section.
On the other hand, in embodiment 7 (Fig. 6, Fig. 7), about high frequency output, be same variation with embodiment 5.On the other hand, in embodiment γ (Fig. 6), about high frequency output, also be same variation with embodiment 5.If they are compared, in embodiment 7, to compare with embodiment γ, the first half section in the last stage is slightly (3W left and right) high output, is slightly (5W left and right) low output at after-stage.Need to prove, in the stove of Fig. 6, temperature is the situation of embodiment 7, and is almost identical in embodiment γ.
Such output difference is mainly because the having or not of plate 6 as thermal insulating material brings.That is in embodiment 7, owing to configuring plate 6 around mould M, thereby needs have appearred only to the situation of the plate 6 excessive heating of part in the first half section of last stage.In addition, in embodiment 7, owing to can utilize plate 6 to keep heat to suppress heat release, thereby at after-stage, high-frequency heating reduces.On the other hand, in embodiment γ, due to without plate 6, thereby can relatively suppress high frequency output in the first half section of last stage, need to make high frequency output higher at after-stage.Need to prove, even need excessive heating in the first half sections of 7 last stages of embodiment, compare with embodiment α (Fig. 4, without heater 7) and also be fully low output, can think that the heating of output recruitment does not act on mould M and acts on plate 6.
In addition, although also have sufficient quality (quality A+) in embodiment γ, but when being provided as the plate 6 of thermal insulating material as described in Example 7, can make the heat release in mould M more steady, and keep interacting with the heat in plate 6, can make for the high-frequency heating of mould M more steadily, can seek quality and further improve (quality A++).Need to prove, be pattern P2 by the pattern that makes the target product temperature, compares with the situation (240 minutes) of pattern P1, can be shortened about 30 minutes hardening time.
On the other hand, in embodiment δ (Fig. 7), about high frequency output, the growth of the growth (slope of target product temperature profile is larger) that increases except products temperature and this part (20W～40W left and right), be identical with embodiment 7 (Fig. 6, Fig. 7).Need to prove, in embodiment δ, compare with embodiment 7, the initial stage of high frequency output rises violent.In addition, the polymerization time of embodiment δ is 180 minutes (speed B) with above-described embodiment 3,4 equal extent, and is shorter than the polymerization time (210 minutes speed B-) of embodiment 7.Further, in the stove of Fig. 7, temperature is the situation of embodiment δ.
Such output difference is mainly because the pattern differentials of target product temperature is brought.That is, in embodiment δ, because being reaches the pattern P3 of the temperature (140 ℃) of after-stage quickly, thereby polymerization time is shorter, quality is poor.On the other hand, in embodiment 7, due to for reaching more reposefully the pattern P2 of after-stage according to the character of polymeric material, although thereby polymerization time longer, quality is than more excellent.
" summarizing investigation etc. "
Above, by device being arranged at platform or floor etc., suitably corresponding to the thermal runaway that produces on every side, in view of this situation etc., by in high-frequency heating section, heater 7 being set, the very good eyeglass of quality can be formed, at the bottom configuration heater 7 of high-frequency heating section, quality further good (embodiment 5 relative with embodiment α) can be made by further.
In addition, control with the output that the upper temp of measuring heating target is used for high frequency generating unit 2 and compare, the temperature of lower of measuring heating target is used for controlling and can forms further good eyeglass (embodiment 6 relative with embodiment β) of quality.
Further, when utilizing heat-resistant resin to surround heating target, can make for the effect appropriateness of heating target steadily, can form the more good eyeglass of quality (embodiment 7 relative with embodiment γ).
And, by carrying out the setting with the pattern (mold temperature pattern) of the target product temperature headed by the products temperature increase, high frequency output is conformed to the high-quality polymerization of thermoset plastic material.Products temperature recruitment etc. can be set according to the kind of thermoset plastic material so that for example make quality be in scope more than level polymerization time for the shortest.
[explanation of symbol]
1,1a, 1b, 1c high-frequency induction heating apparatus
2,2a high frequency generating unit
6 plates (thermal insulating material, heat-resistant resin spare)
7 heaters
8 mold temperature sensors
9 lower electrode temperature sensors (generating unit temperature sensor, temperature of lower sensor)
The M mould.
Claims (24)
1. the high-frequency induction heating apparatus of a thermoset plastic material is characterized in that:
This device possesses the high frequency generating unit, and this high frequency generating unit can be received the mould that dress is injected with thermoset plastic material, the high frequency that generation can be shone this mould of receive dress;
By the described high frequency irradiation that described mould is carried out, described thermoset plastic material is carried out eddy-current heating.
2. the high-frequency induction heating apparatus of thermoset plastic material as claimed in claim 1, is characterized in that, this device further possesses:
Mold temperature sensor for the temperature of measuring described mould; And
Control device, the magnitude relationship that compares based on the temperature that is obtained by this mold temperature sensor and mold temperature pattern predefined according to the kind of described thermoset plastic material is determined the output of described high frequency.
3. the high-frequency induction heating apparatus of thermoset plastic material as claimed in claim 2, is characterized in that, described mold temperature sensor is measured the temperature of lower of described mould.
4. as the high-frequency induction heating apparatus of claim 1 to the described thermoset plastic material of any one of claim 3, it is characterized in that, dispose heater in described high frequency generating unit.
5. the high-frequency induction heating apparatus of thermoset plastic material as claimed in claim 4, is characterized in that, described heater configuration is in the bottom of described high frequency generating unit.
6. as the high-frequency induction heating apparatus of claim 4 or thermoset plastic material claimed in claim 5, it is characterized in that, this device further possesses:
The generating unit temperature sensor that the temperature of described high frequency generating unit is measured; And
Control device, the magnitude relationship that compares based on the temperature that is obtained by this generating unit temperature sensor and generating unit temperature model predefined according to the kind of described thermoset plastic material is determined the output of described heater;
Described generating unit temperature model and described mold temperature pattern are equal to or on average lower than described mold temperature pattern.
7. the high-frequency induction heating apparatus of thermoset plastic material as claimed in claim 6, is characterized in that, described generating unit temperature sensor is the temperature of lower sensor for the temperature of lower of measuring described high frequency generating unit.
8. as the high-frequency induction heating apparatus of claim 1 to the described thermoset plastic material of any one of claim 7, it is characterized in that, this device further possesses be used to the heat-resistant resin spare that surrounds described mould.
9. as the high-frequency induction heating apparatus of claim 1 to the described thermoset plastic material of any one of claim 8, it is characterized in that, with the described high frequency of pulse type irradiation.
10. as the high-frequency induction heating apparatus of claim 1 to the described thermoset plastic material of any one of claim 9, it is characterized in that, be provided with two the above high frequency generating units.
11. as the high-frequency induction heating apparatus of claim 1 to the described thermoset plastic material of any one of claim 10, it is characterized in that, this device further possesses the transport unit that plural described mould is transmitted continuously to described high frequency generating unit.
12. as the high-frequency induction heating apparatus of claim 1 to the described thermoset plastic material of any one of claim 11, it is characterized in that, described mould is the eyeglass mould.
13. the forming method of a thermosetting plastics is characterized in that, the method possesses:
The mould that is injected with thermoset plastic material is received the receipts dress operation that is contained in the high frequency generating unit that produces high frequency; And
Described mould is shone the high frequency irradiation process of described high frequency in described high frequency generating unit;
By the described high frequency irradiation of in described high frequency irradiation process, described mould being carried out, described thermoset plastic material is carried out eddy-current heating make its curing, obtain the thermoset plastic forming product.
14. the forming method of thermosetting plastics as claimed in claim 13 is characterized in that:
Be provided for measuring the mold temperature sensor of the temperature of described mould;
In described high frequency irradiation process, the magnitude relationship that compares based on the temperature that is obtained by this mold temperature sensor and mold temperature pattern predefined according to the kind of described thermoset plastic material is determined the output of described high frequency.
15. the forming method of thermosetting plastics as claimed in claim 14 is characterized in that, described mold temperature sensor is measured the temperature of lower of described mould.
16. as the forming method of claim 13 to the described thermosetting plastics of any one of claim 15, it is characterized in that:
Be provided with heater in described high frequency generating unit;
In described high frequency irradiation process, make this heater running.
17. the forming method of thermosetting plastics as claimed in claim 16 is characterized in that, described heater is configured in the bottom of described high frequency generating unit.
18. the forming method as claim 16 or the described thermosetting plastics of claim 17 is characterized in that:
Be provided for measuring the generating unit temperature sensor of the temperature of described high frequency generating unit;
In described high frequency irradiation process, the magnitude relationship that compares based on the temperature that is obtained by this generating unit temperature sensor and generating unit temperature model predefined according to the kind of described thermoset plastic material is determined the output of described heater;
Described generating unit temperature model and described mold temperature pattern are equal to or on average lower than described mold temperature pattern.
19. the forming method of thermosetting plastics as claimed in claim 18 is characterized in that, described generating unit temperature sensor is the temperature of lower sensor for the temperature of lower of measuring described high frequency generating unit.
20. as the forming method of claim 13 to the described thermosetting plastics of any one of claim 19, it is characterized in that, in described receipts dress operation, described mould receipts be contained in heat-resistant resin spare.
21. as the forming method of claim 13 to the described thermosetting plastics of any one of claim 20, it is characterized in that, in described high frequency irradiation process, with the described high frequency of pulse type irradiation.
22. as the forming method of claim 13 to the described thermosetting plastics of any one of claim 21, it is characterized in that, be provided with two the above high frequency generating units.
23. as the forming method of claim 13 to the described thermosetting plastics of any one of claim 22, it is characterized in that, the method further possesses the transmission operation that plural described mould is transmitted continuously to described high frequency generating unit.
24. as the forming method of claim 13 to the described thermosetting plastics of any one of claim 23, it is characterized in that, described thermoset plastic forming product are eyeglass.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010211135 | 2010-09-21 | ||
| JP2010-211135 | 2010-09-21 | ||
| PCT/JP2011/071348 WO2012039382A1 (en) | 2010-09-21 | 2011-09-20 | High frequency dielectric heating device for thermosetting plastic material, and method for molding thermosetting plastic |
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| Publication Number | Publication Date |
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| CN103108735A true CN103108735A (en) | 2013-05-15 |
| CN103108735B CN103108735B (en) | 2015-09-09 |
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| CN201180044765.XA Expired - Fee Related CN103108735B (en) | 2010-09-21 | 2011-09-20 | The high-frequency induction heating apparatus of thermoset plastic material and the forming method of thermosetting plastics |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5785042B2 (en) |
| KR (1) | KR101819066B1 (en) |
| CN (1) | CN103108735B (en) |
| WO (1) | WO2012039382A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719657A (en) * | 2019-11-05 | 2020-01-21 | 贵州师范学院 | Microwave uniform heating device and method for plastic |
| CN112153768A (en) * | 2020-10-12 | 2020-12-29 | 哈尔滨理工大学 | Electromagnetic induction heating method for thermosetting molding of carbon fiber reinforced composite material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2014141033A (en) * | 2013-01-24 | 2014-08-07 | Hoya Corp | Method for manufacturing a plastic lens |
| KR102339967B1 (en) * | 2013-11-06 | 2021-12-17 | 세키스이가가쿠 고교가부시키가이샤 | Method for manufacturing cured film, method for manufacturing electronic component, and electronic component |
| JP7175507B2 (en) * | 2019-11-22 | 2022-11-21 | 株式会社micro-AMS | Dielectric heating molding apparatus and dielectric heating molding method |
| JP7450228B2 (en) | 2021-09-27 | 2024-03-15 | ヒロセ補強土株式会社 | Core material for small diameter cast-in-place piles |
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| JPH09314566A (en) * | 1996-05-29 | 1997-12-09 | Kinugawa Rubber Ind Co Ltd | Molding method |
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- 2011-09-20 KR KR1020137010125A patent/KR101819066B1/en active IP Right Grant
- 2011-09-20 JP JP2011204667A patent/JP5785042B2/en active Active
- 2011-09-20 WO PCT/JP2011/071348 patent/WO2012039382A1/en active Application Filing
- 2011-09-20 CN CN201180044765.XA patent/CN103108735B/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
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| WO2012039382A1 (en) | 2012-03-29 |
| JP2012086560A (en) | 2012-05-10 |
| KR101819066B1 (en) | 2018-01-16 |
| JP5785042B2 (en) | 2015-09-24 |
| KR20130066688A (en) | 2013-06-20 |
| CN103108735B (en) | 2015-09-09 |
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