WO2013021055A1 - Dispositif pour l'ajustement du facteur qualité d'un système de chauffage par induction notamment un moule à chauffage autonome - Google Patents
Dispositif pour l'ajustement du facteur qualité d'un système de chauffage par induction notamment un moule à chauffage autonome Download PDFInfo
- Publication number
- WO2013021055A1 WO2013021055A1 PCT/EP2012/065734 EP2012065734W WO2013021055A1 WO 2013021055 A1 WO2013021055 A1 WO 2013021055A1 EP 2012065734 W EP2012065734 W EP 2012065734W WO 2013021055 A1 WO2013021055 A1 WO 2013021055A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mold
- circuit
- tooling
- inductors
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/065—Cooling or heating equipment for moulds
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/06—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/14—Tools, e.g. nozzles, rollers, calenders
-
- 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
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
Definitions
- the invention relates to a device for adjusting the quality factor of a self-heating induction mold.
- a self-heating mold comprises two mold bodies defining a forming cavity. Such a mold can be used for stamping operations or for hot molding operations. At least one of the mold bodies comprises an autonomous heating system produced by inductors.
- the inductors consist of electrical conductors extending in grooves or bores, forming closed cavities, made in the mold body, which grooves or bores define a path of the inductors.
- the path produced by these inductors as well as their number and distribution in the mold body are dictated by the shape of the cavity defining the forming cavity and carried by the mold body concerned, the temperature to be reached in this cavity and the temperature distribution targeted in said cavity during the stamping or molding cycle.
- Part of the mold body is made of a ferromagnetic material which is subjected to the effect of the inductors.
- This part of the mold body may be the entire mold, only a part of the volume thereof, for example the part of the mold body in which the grooves or bores are made, or be limited to the internal lining of the grooves or bores in which the inductors are located.
- Said mold is installed in a production environment, for example on the plates of a press.
- the heating is obtained by circulating an alternating electric current at high frequency in said inductors, which generates induced currents causing heating of the ferromagnetic part of the mold which rises in temperature and transmits this heat by conduction to the footprint and finally the material constituting the future piece from the mold
- a high frequency current generator works by resonating
- FIRE I LLE OF REM PLACEM ENT (RULE 26) the oscillating circuit constituted by the inductor and the charge heated by it. These conditions allow the optimal inductive efficiency. When this condition is not respected, the energy delivered by the generator is consumed by joule effect in the conductors making the inductors, this effect not causing or too little heating of the ferromagnetic part. Thus, such a lack of energy efficiency subjects the inductors to significant thermal stress with respect to the heating efficiency of the mold.
- US 1 948 704 discloses an induction heater adapted to the heat treatment of a material directly solicited by induction.
- this device is suitable for thermal treatment of a spring or for melting a metal.
- the material thus heated by induction is placed in an induction coil of known characteristics.
- the operating conditions of the generator are adapted to this device so that the coil and generator assembly constitutes a resonant circuit.
- the introduction of the charge into the circuit, and the modification during the heat treatment of the characteristics of the treated material, by the melting of the material or its rise in temperature beyond the Curie point, are likely to eliminate the operating conditions of the device optimal conditions.
- the device disclosed in this document of the prior art comprises inductances and variable capacities to adapt the response of the generator and to try to remain always in the optimal conditions.
- the oscillating circuit In the case of tooling with autonomous heating, the oscillating circuit, whose shape is imposed by various technical constraints, is generally not resonant. Thus, when such a tool is connected to the high frequency generator, in many cases the generator simply can not start.
- FIG. 1 relating to the prior art shows the schematic electrical circuit of an independent induction heating device.
- the tooling circuit (120) corresponding to the inductors of the mold body interacting with said tooling is characterized by an impedance Z1, combining the resistors (105) and equivalent electrical inductances (115) of the mold body and the inductors, R1 and L1.
- a capacitor box (101) of adjustable capacitance C3 is connected to the generator (100) in parallel with this tooling circuit (120).
- the high frequency electric generator (100) characterized by an impedance ZG, is placed in parallel in this circuit for its power supply. This generator is capable of supplying an alternating current in a defined frequency range, generally comprised between 10 kHz and 100 kHz.
- the load circuit constituted by the tooling circuit and the capacitance box, forms a parallel-type oscillating circuit.
- the generator comprises an electronic circuit enabling it to automatically adjust to the resonant frequency of the oscillating circuit.
- the resonant frequency f 0 of the oscillating circuit is given by the relation:
- the peak width is a function of the ratio L1 / R1.
- L1 / R1 the narrower the resonance peak will be.
- a starting condition of the generator is that it can be calibrated to the resonant frequency of the oscillating circuit, that is to say that this resonant frequency is sufficiently marked by a narrow resonance peak, and that this resonance frequency is within the range of supply frequency that said generator is able to deliver.
- a quality factor Q L1 C 0 / R 1 is defined.
- this quality factor Q is necessary for this quality factor Q to be greater than or equal to 2.
- this quality factor is much less than 1 so that the generator does not start and the adjustment of the capacitor C3 does not make it possible to modify the quality factor Q.
- the power delivered by the generator and injected into the tooling circuit is maximum when the load impedance is in the output impedance range of the generator, that is:
- R1 and L1 are largely dictated by the geometry of the footprint and technical constraints of temperature distribution in said footprint so that they provide little adjustment latitude.
- the invention relates to a mold comprising an independent heating device, which mold comprises: a mold body having an induction heating circuit, said resistance tool circuit R1 and inductor L1, which tooling circuit comprises an inductor extending into a closed cavity of the mold body;
- connection means for connecting the tooling circuit to a high frequency current generator
- Inserting an additional coil into the tooling circuit provides additional adjustment latitude.
- Said coil interacting with the load, its geometry (length, number of turns) is dictated by the inductance L2 to reach, without affecting the distribution of heating in the mold body, the resistance R2 is also reduced.
- Said adjustment coil is associated with the mold and calculated according to it so that said mold can be connected and operate with any commercial generator. The operation of the autonomous heating device of said mold thus becomes independent of the production environment.
- the invention can be implemented according to the advantageous embodiments described below, which can be considered individually or in any technically operative combination.
- the adjustment coil is electrically connected in series with the tooling circuit.
- the adjustment coil is electrically connected in parallel with the tooling circuit.
- the resulting inductance and resistance of the tooling circuit combined with the adjustment coil are such that the quality factor Q of the oscillating electric circuit formed when said tooling circuit connected to the coil is connected.
- the quality factor is high enough to allow the start of the generator without difficulty, but limited to avoid overheating inductors, especially when they do not subject to cooling in operation.
- the tooling circuit comprises two inductors connected in parallel, and the adjustment coil is connected in series with one of the inductors.
- the adjustment coil is connected in series with one of the inductors.
- the mold which is the subject of the invention comprises electrical connection means capable of making the connection between the inductors of the two mold bodies when said mold bodies are brought closer to one another.
- the electrical tooling circuit comprises two inductors connected in series.
- the series assembly also ensures that the same intensity flows through both inductors.
- the presence of the adjustment coil makes it possible to compensate for the deterioration of the quality factor resulting from the long length of the inductor.
- FIGS. 1 to 5 The invention is described below in its preferred embodiments, in no way limiting, and with reference to FIGS. 1 to 5 in which:
- FIG. 1 relating to the prior art illustrates the electrical circuit corresponding to a mold equipped with an inductive self-heating device when it is connected to a high-frequency current generator;
- FIG. 2 is a perspective view from a front view and from above of an exemplary embodiment of a mold according to the invention comprising a punch. and a matrix;
- FIG. 3 shows equivalent electrical circuits of a mold according to exemplary embodiments of the invention when it is connected to a high-frequency alternating current generator, FIGS. 2B and 2C according to embodiments of FIG. invention;
- FIG. 4 is a circuit diagram of an exemplary embodiment of the mold that is the subject of the invention, comprising two parallel induction circuits;
- FIG. 5 shows the electrical diagram of a mold according to an exemplary embodiment of the invention comprising two inductors connected in parallel and a coil connected in series with one of these two inductors.
- the mold object of the invention it comprises a first (210) mold body having a male imprint forming a punch and a second (220) mold body carrying a female cavity forming a die .
- the two mold bodies each comprise an induction electric circuit (215, 225) formed by conductors substantially describing a turn in the volume of said tooling.
- the punch (210) comprises an inductor (215)
- the matrix (220) comprises two inductors (225) connected in series. Each of these inductors (215, 225) interacts with the mold body in which it extends, creating induced currents therein.
- said mold (200) consists of a ferromagnetic material so that these induced currents cause a heating of said mold, to bring it quickly to a temperature suitable for the transformation of a shaped material between the punch (210) and the die (220).
- the die (220) and the punch (210) comprise connection means (230) so that when said die (220) is approaching the punch, the inductors (225) of the die (220) ) are connected electrically and in parallel connection to the inductor (215) of the punch (210) and together form an inductive circuit, which circuit is connected to a high frequency generator (not shown) by means (250) of connection appropriate.
- a so-called adjustment coil (240) that does not interact with the tooling is advantageously placed in the electrical circuit thus formed between said connection means (250) and the tooling circuit.
- This adjustment coil (240) consists of a good electrically conductive material such as copper, and designed, in terms of diameter and number of turns, to have an inductance L2 such that the electrical circuit thus constituted meets the requirements of energy efficiency and generator start.
- the induction heating device comprises an inductance inductor Li and an ohmic resistor Ri, which inductor interacts with the charge, constituted by the mold body, which charge exhibits a resistor Rch and inductance Lch.
- the combination of the characteristics of the load and the inductor defines the characteristics of the electrical circuit, said tooling circuit (120), which tooling circuit is connected to a generator (100) at high frequency.
- a capacitor box (101) of adjustable capacity is connected in parallel with this tooling circuit, the value of the capacity is set to C3 according to this example.
- This assembly combining the capacitor and the tooling circuit defines the oscillating circuit connected to the generator (100).
- This oscillating circuit is characterized by its impedance Z1, a function of its resulting characteristics of resistance R1, inductance L1 and capacitance C3. So :
- the resulting resistance (105) is defined by:
- the resulting inductance (115), L1 will be higher the longer the inductor. This parameter is therefore strongly influenced by the geometry of the device, and the resistance (105) R1 will be mainly influenced by the nature of the load and its mass.
- the geometry is constrained by functional factors related to the shape of the mold and to the distribution of the temperatures targeted in the imprints.
- FIGS. 3A and 3B the introduction of a complementary inductor (341, 342) in the circuit, between the connection terminals (250) and the tooling circuit, which connected inductance is in series (341), FIG. 3A, or in FIG. parallel (342), FIG. 2C, with said circuit tooling, allows to adjust the characteristics of the oscillating circuit so that the conditions are verified, and thus allow the start of the generator and the operation of the device under optimum energy efficiency conditions.
- the low resistance of R2 has a significant effect on the resonance characteristics of the oscillating circuit and in particular on the width of the oscillating circuit. peak of resonance, that is to say on quality factor Q.
- the resistance Rc of the circuit is given by R1, R1 being essentially the resistance of the load and the inductance of the circuit Le is given by the combination (L1 + L2) .
- the quality factor Q is increased, the impedance and frequency matching with respect to the characteristics of the generator (100 ) being made by changing the value of the capacity (101), that is to say without modification of the mold, delivered with its adjustment coil.
- the adjustment coil is in a series connection configuration (341) or in a parallel connection configuration (342) in the oscillating circuit, the latter allows, by adjusting its inductance L2, not inducing no current in the load, and its low resistance R2, to ensure a Q quality factor suitable for starting a high frequency generator.
- the tooling circuit is determined as a function of the geometry of the cavities, of the temperature distribution to be obtained therein and of the mass of the tooling, without worrying about the possibility of starting the generator supplying said mold and without take into account the energy efficiency of the heating in the presence of the generator.
- the adjustment coil is then calculated according to the tooling circuit to make it resonant.
- a plurality of adjustment coils combining serial and parallel couplings with the tooling circuit allow a fine adjustment of the operating parameters of the heating mold. autonomous.
- the use of such an adjustment coil offers a great latitude in the design of the mold and allows the realization of a mold whose distribution of the heating on the surface of the impression is optimal, leading to molded parts better quality.
- a first inductive circuit characterized by its equivalent resistance (405) and inductor (415) is connected to the generator (100).
- this first inductive circuit is used for heating the punch.
- This first circuit is traversed by a current it.
- a second inductive circuit characterized by its equivalent resistor (425) and inductor (435), is, for example, used to heat the die of the mold.
- This second inductive circuit is connected to the generator (100) in parallel with the first inductive circuit and traversed by a current i2. If the characteristics of the two induction circuits are similar, that is to say that the length of their inductors and the volumes heated by induction are substantially equivalent on the two circuits, then:
- i is the current delivered by the generator and Q the quality factor of the oscillating circuit.
- the insertion of an adjustment coil (440) in the circuit allows both to obtain a quality factor suitable for promoting the starting of the generator (100), that is to say a factor Q at least equal to 2, and maintain this factor Q close to this minimum to avoid circulating a current of too great intensity in the inductors (415, 435).
- the mold object of the invention comprises two parallel inductive circuits resistances (505, 525) equivalent or inductors (515, 535) very different. These differences in equivalent impedances come, for example, from different lengths of the inductors used for the heating of the punch and the die, or from the different heated volumes for each inductive circuit. Thus, in the absence of other elements, the electric current generated by the generator (100) is distributed between these two circuits as a function of their respective impedances, so that the circuit having the lowest impedance, so a priori the one with the volume of material to be heated is the lowest, is traversed by the strongest current.
- an adjustment coil (540), in addition to the effect described above, makes it possible here also to adjust this distribution of the intensity between the two inductive circuits so that the current flowing through the first circuit and the current i2 flowing through the second circuit produce heating effects adapted to the intended application according to the characteristics of the load.
- the intensity flowing in the inductor is multiple according to a factor Q of the intensity produced by the generator.
- Q the degree of the intensity produced by the generator.
- the invention achieves the objectives, in particular, it makes it possible to adjust the characteristics of the tooling circuit of a self-heating mold so that the oscillating circuit formed when said circuit tooling is connected to a high frequency generator is adapted to start said generator and achieves an energy efficiency such that the Q factor is greater than 2.
- the use of an adjustment coil connected between the tooling circuit and the terminals connection of this tooling circuit, so attached to the tool allows to transfer this tool from one production environment to another.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Induction Heating (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020147006380A KR102080125B1 (ko) | 2011-08-10 | 2012-08-10 | 유도 가열 시스템, 특히 독립식 가열을 갖는 몰드의 품질 인자를 조절하기 위한 디바이스 |
| CN201280049657.6A CN103858518B (zh) | 2011-08-10 | 2012-08-10 | 感应加热系统,尤其是自主加热模具的品质因数调节装置 |
| JP2014524411A JP6170919B2 (ja) | 2011-08-10 | 2012-08-10 | 誘導加熱システム、特には内蔵型ヒーターを備える金型の品質係数を調整する装置 |
| US14/237,584 US9579828B2 (en) | 2011-08-10 | 2012-08-10 | Device for adjusting the quality factor of a mold with a self-contained induction heating system |
| EP12744017.0A EP2742773B1 (fr) | 2011-08-10 | 2012-08-10 | Dispositif pour l'ajustement du facteur qualité d'un système de chauffage par induction notamment un moule à chauffage autonome |
| CA2844773A CA2844773C (fr) | 2011-08-10 | 2012-08-10 | Dispositif pour l'ajustement du facteur qualite d'un systeme de chauffage par induction notamment un moule a chauffage autonome |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1157289 | 2011-08-10 | ||
| FR1157289A FR2979047B1 (fr) | 2011-08-10 | 2011-08-10 | Dispositf pour l'ajustement du facteur qualite d'un systeme de chauffage par induction notamment un moule a chauffage autonome |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013021055A1 true WO2013021055A1 (fr) | 2013-02-14 |
Family
ID=46639543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2012/065734 Ceased WO2013021055A1 (fr) | 2011-08-10 | 2012-08-10 | Dispositif pour l'ajustement du facteur qualité d'un système de chauffage par induction notamment un moule à chauffage autonome |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9579828B2 (fr) |
| EP (1) | EP2742773B1 (fr) |
| JP (1) | JP6170919B2 (fr) |
| KR (1) | KR102080125B1 (fr) |
| CN (1) | CN103858518B (fr) |
| CA (1) | CA2844773C (fr) |
| FR (1) | FR2979047B1 (fr) |
| WO (1) | WO2013021055A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2832520A1 (fr) * | 2013-07-30 | 2015-02-04 | Confindustria Bergamo | Machine et procédé de moulage rotatif d'objets creux en matière thermoplastique |
| WO2017186824A1 (fr) | 2016-04-26 | 2017-11-02 | Roctool | Procédé et dispositif pour le moulage en coquille d'un alliage métallique |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9073094B2 (en) | 2011-12-28 | 2015-07-07 | Abbott Laboratories | Methods and apparatus to reduce biological carryover using induction heating |
| FR3057487B3 (fr) | 2016-10-19 | 2018-12-07 | Roctool | Procede et dispositif pour la consolidation d'une preforme textile et surmoulage. |
| JP6913170B2 (ja) * | 2016-12-22 | 2021-08-04 | アボット・ラボラトリーズAbbott Laboratories | 生体キャリーオーバーを低減するための誘導加熱システムおよび誘導加熱システムを制御する方法 |
| US11225047B2 (en) | 2017-03-15 | 2022-01-18 | International Automotive Components Group North America, Inc. | Skin-foam-substrate structure via induction heating |
| CN107309343A (zh) * | 2017-07-21 | 2017-11-03 | 北京汽车股份有限公司 | 热冲压成形装备 |
| US11008453B2 (en) | 2018-01-16 | 2021-05-18 | Arkema France | Polymeric composite articles comprising the heterogeneous surface/bulk distribution of discrete phase |
| CN110224504B (zh) * | 2019-05-28 | 2025-09-23 | 吉成无线(深圳)有限公司 | 无线充电发射器加热加热杯的控制方法及无线充电发射器 |
| US11856678B2 (en) * | 2019-10-29 | 2023-12-26 | Senic Inc. | Method of measuring a graphite article, apparatus for a measurement, and ingot growing system |
| DE102021121225A1 (de) | 2021-08-16 | 2023-02-16 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Presswerkzeug |
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| JP2005179084A (ja) * | 2003-12-16 | 2005-07-07 | Matsushita Electric Ind Co Ltd | 誘導加熱成形装置 |
| FR2867939B1 (fr) * | 2004-03-18 | 2007-08-10 | Roctool | Procede pour chauffer des materiaux en vue de produire des objets et dispositif mettant en oeuvre de procede |
| KR20060020083A (ko) * | 2004-08-31 | 2006-03-06 | 김영일 | 광대역의 주파수에서 작동가능한 유도가열장치 |
| FR2890588B1 (fr) * | 2005-09-12 | 2007-11-16 | Roctool Soc Par Actions Simpli | Dispositif de transformation de materiaux utilisant un chauffage par induction |
| JP2008097948A (ja) * | 2006-10-11 | 2008-04-24 | Nabio Kk | 金型用誘導加熱装置 |
| JP2008135241A (ja) * | 2006-11-27 | 2008-06-12 | Mitsui Eng & Shipbuild Co Ltd | 試打ち用誘導加熱コイルを備えた誘導加熱装置及び試打ち方法 |
| US8372327B2 (en) * | 2007-09-13 | 2013-02-12 | The Boeing Company | Method for resin transfer molding composite parts |
| JP6081792B2 (ja) * | 2012-12-20 | 2017-02-15 | 株式会社Pfu | 原稿の搬送装置 |
-
2011
- 2011-08-10 FR FR1157289A patent/FR2979047B1/fr not_active Expired - Fee Related
-
2012
- 2012-08-10 US US14/237,584 patent/US9579828B2/en active Active
- 2012-08-10 EP EP12744017.0A patent/EP2742773B1/fr active Active
- 2012-08-10 JP JP2014524411A patent/JP6170919B2/ja active Active
- 2012-08-10 WO PCT/EP2012/065734 patent/WO2013021055A1/fr not_active Ceased
- 2012-08-10 KR KR1020147006380A patent/KR102080125B1/ko active Active
- 2012-08-10 CA CA2844773A patent/CA2844773C/fr active Active
- 2012-08-10 CN CN201280049657.6A patent/CN103858518B/zh active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1948704A (en) | 1926-01-30 | 1934-02-27 | Lorenz C Ag | Method of operating high frequency furnaces |
| US3153132A (en) * | 1960-09-08 | 1964-10-13 | Rockwell Standard Co | Induction heating apparatus |
| WO2006136743A1 (fr) * | 2005-06-22 | 2006-12-28 | Roctool | Dispositif de chauffage par induction et procede de fabrication de pieces a l'aide d'un tel dispositif |
| EP1894442A1 (fr) | 2005-06-22 | 2008-03-05 | Roctool | Dispositif de chauffage par induction et procede de fabrication de pieces a l'aide d'un tel dispositif |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2832520A1 (fr) * | 2013-07-30 | 2015-02-04 | Confindustria Bergamo | Machine et procédé de moulage rotatif d'objets creux en matière thermoplastique |
| WO2017186824A1 (fr) | 2016-04-26 | 2017-11-02 | Roctool | Procédé et dispositif pour le moulage en coquille d'un alliage métallique |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140183178A1 (en) | 2014-07-03 |
| CN103858518B (zh) | 2016-01-20 |
| FR2979047A1 (fr) | 2013-02-15 |
| EP2742773B1 (fr) | 2018-10-31 |
| FR2979047B1 (fr) | 2014-09-19 |
| KR102080125B1 (ko) | 2020-02-24 |
| JP6170919B2 (ja) | 2017-07-26 |
| CN103858518A (zh) | 2014-06-11 |
| JP2014524644A (ja) | 2014-09-22 |
| CA2844773C (fr) | 2019-09-17 |
| KR20140051407A (ko) | 2014-04-30 |
| CA2844773A1 (fr) | 2013-02-14 |
| EP2742773A1 (fr) | 2014-06-18 |
| US9579828B2 (en) | 2017-02-28 |
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