JP2000085014A - Method and apparatus for high frequency welding - Google Patents
Method and apparatus for high frequency weldingInfo
- Publication number
- JP2000085014A JP2000085014A JP29750998A JP29750998A JP2000085014A JP 2000085014 A JP2000085014 A JP 2000085014A JP 29750998 A JP29750998 A JP 29750998A JP 29750998 A JP29750998 A JP 29750998A JP 2000085014 A JP2000085014 A JP 2000085014A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- frequency
- heater
- high frequency
- induction heating
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 68
- 230000006698 induction Effects 0.000 claims abstract description 39
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 21
- 239000004743 Polypropylene Substances 0.000 abstract description 12
- -1 polypropylene Polymers 0.000 abstract description 12
- 229920001155 polypropylene Polymers 0.000 abstract description 12
- 230000005684 electric field Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高周波誘電加熱装
置と高周波誘導加熱装置とを併用することにより、ポリ
プロピレンを含む全ての熱可塑性樹脂の溶着を、容易
に、且つ確実に行うことができる高周波溶着方法および
その装置に関する。BACKGROUND OF THE INVENTION The present invention relates to a high-frequency high-frequency heating apparatus in which all thermoplastic resins including polypropylene can be easily and reliably welded by using a high-frequency dielectric heating apparatus and a high-frequency induction heating apparatus in combination. The present invention relates to a welding method and an apparatus therefor.
【０００２】[0002]
【従来の技術】環境問題が重要視されている昨今、ポリ
塩化ビニルの燃焼時に発生するダイオキシンや塩素ガス
に伴う環境ホルモンの発生等で、ビニール製品を排除す
る傾向にある。その環境問題の中で、一躍脚光を浴びて
いる素材がポリプロピレンである。2. Description of the Related Art In recent years, environmental issues have been regarded as important, and there is a tendency to eliminate vinyl products due to the generation of environmental hormones accompanying dioxin and chlorine gas generated during combustion of polyvinyl chloride. The material that has come to the forefront of the environment is polypropylene.
【０００３】前記ポリプロピレンは、プロピレンを重合
した合成樹脂であり、軽くて耐熱度が高いという特徴を
有しており、繊維やフィルム等に幅広く使用されてい
る。前記ポリプロピレンは、高周波誘電加熱装置単体で
は溶着しないため、高周波誘電加熱装置の電極にヒータ
を取り付け、金型の初期温度を高めることが必要とされ
ている。[0003] The polypropylene is a synthetic resin obtained by polymerizing propylene, and is characterized by being light and having a high heat resistance, and is widely used in fibers and films. Since the polypropylene is not welded by the high-frequency dielectric heating device alone, it is necessary to attach a heater to the electrode of the high-frequency dielectric heating device to increase the initial temperature of the mold.
【０００４】[0004]
【発明が解決しようとする課題】しかし、ヒータにより
金型を常に高温に保持することは、予備加熱により稼働
コストが増大する。また、通電（金型に高周波を加え
る）していない状態であっても、作業者が金型に触れた
場合、熱による火傷が発生するという問題が発生した。However, maintaining the mold at a high temperature by the heater always increases the operating cost due to the preheating. In addition, even when electricity is not supplied (high frequency is applied to the mold), when the operator touches the mold, there is a problem that burns due to heat occur.
【０００５】また、ヒータにより金型を必要温度に高め
るには、ある程度の所要時間を必要とすると共に、殆ど
発熱しないポリプロピレンにおいては、完全に溶着する
ことは不可能であった。[0005] In addition, it takes a certain amount of time to raise the mold to the required temperature by the heater, and it is impossible to completely weld polypropylene that generates little heat.
【０００６】本発明は上記の点に鑑み、作業者の火傷に
よる事故を解消すると共に、一般的な熱可塑性樹脂は基
より、殆ど発熱しないポリプロピレンにおいも、容易
に、且つ確実に溶着することができる高周波溶着方法と
その装置を提供することにある。SUMMARY OF THE INVENTION In view of the above, the present invention eliminates accidents caused by burns of workers, and can easily and reliably weld polypropylene, which generates almost no heat, from general thermoplastic resins. It is an object of the present invention to provide a high-frequency welding method and apparatus which can be used.
【０００７】[0007]
【課題を解決するための手段】上記課題を達成するため
に本発明の高周波溶着方法は、高周波誘電加熱装置の誘
電加熱と、高周波誘導加熱装置の誘導加熱を併用したフ
ィルム・シートの溶着方法。In order to achieve the above object, a high frequency welding method according to the present invention is a method for welding a film or a sheet using both dielectric heating of a high frequency induction heating device and induction heating of a high frequency induction heating device.
【０００８】また、前記高周波溶着方法に使用される高
周波溶着装置は、前記高周波誘電加熱装置に設置された
金型と、該金型の周囲に巻回された、前記高周波誘導加
熱装置より接続されたコイルとで形成される。The high-frequency welding apparatus used in the high-frequency welding method is connected to a mold provided in the high-frequency dielectric heating apparatus and the high-frequency induction heating apparatus wound around the mold. Formed with the coil.
【０００９】さらに、前記コイルを、金型の周囲に非接
触状態に巻回した。Further, the coil is wound around the mold in a non-contact state.
【００１０】高周波誘電加熱装置の誘電加熱による高周
波電界にて熱可塑性樹脂を加熱すると共に、高周波誘導
加熱装置の誘導加熱により、金型を瞬間的に加熱させる
ことで、ポリプロピレンを含む全ての樹脂の溶着を容易
に、且つ確実に行うことができる。[0010] In addition to heating the thermoplastic resin by a high-frequency electric field generated by the dielectric heating of the high-frequency induction heating device and instantaneously heating the mold by the induction heating of the high-frequency induction heating device, all the resins including polypropylene can be heated. Welding can be performed easily and reliably.
【００１１】また、高周波誘導加熱装置により金型を強
制冷却させるので、従来より発生した金型の接触による
作業者の火傷を解消することができる。Further, since the mold is forcibly cooled by the high-frequency induction heating device, it is possible to eliminate the burn of the operator due to the contact of the mold which has conventionally occurred.
【００１２】[0012]
【発明の実施の形態】本発明の高周波溶着方法およびそ
の装置の実施の形態を図面に基づいて説明する。なお、
図１は高周波溶着装置の全体斜視図、図２および図３は
熱可塑性樹脂の溶着方法を表す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the high frequency welding method and apparatus of the present invention will be described with reference to the drawings. In addition,
FIG. 1 is an overall perspective view of a high frequency welding apparatus, and FIGS. 2 and 3 show a method of welding a thermoplastic resin.
【００１３】本発明の高周波溶着方法は、高周波誘電加
熱装置と高周波誘導加熱装置とを併用することにより、
誘電加熱による高周波電界にて熱可塑性樹脂を加熱する
と共に、誘導加熱により金型を瞬間的に加熱させること
により、ポリプロピレンを含む全ての熱可塑性樹脂を容
易に、且つ確実に溶着することができる。The high frequency welding method of the present invention uses a high frequency induction heating device and a high frequency induction heating device in combination,
By heating the thermoplastic resin by a high frequency electric field by dielectric heating and instantaneously heating the mold by induction heating, all the thermoplastic resins including polypropylene can be easily and reliably welded.
【００１４】前記高周波溶着方法に使用される高周波溶
着装置１は、高周波誘電加熱装置１０と高周波誘導加熱
装置２０とで構成されており、前記高周波誘電加熱装置
１０の金型１１の周囲には、高周波誘導加熱装置２０に
接続されているのコイル２２が非接触状態で巻回されて
いる。The high-frequency welding apparatus 1 used in the high-frequency welding method is composed of a high-frequency induction heating apparatus 10 and a high-frequency induction heating apparatus 20. A coil 22 connected to the high-frequency induction heating device 20 is wound in a non-contact state.
【００１５】前記高周波誘電加熱装置１０の前面には、
台１３上に載置された熱可塑性樹脂３０を適宜状態に溶
着させる金型１１と、該金型１１を保持固定する金型保
持具１２が設置されている。On the front surface of the high-frequency induction heating device 10,
A mold 11 for appropriately welding the thermoplastic resin 30 placed on the table 13 and a mold holder 12 for holding and fixing the mold 11 are provided.
【００１６】前記高周波誘電加熱装置１０は、高周波電
源と電極（図示せず）とで構成されている。一般的に、
高周波誘電加熱は、二枚の電極間に高周波の電界が発生
し、この電界を利用して加熱するもので、非金属物質が
高周波電界中で誘電損失のために発熱することは周知と
されている。The high-frequency dielectric heating device 10 comprises a high-frequency power supply and electrodes (not shown). Typically,
In high-frequency dielectric heating, a high-frequency electric field is generated between two electrodes, and heating is performed using this electric field. It is well known that non-metallic materials generate heat due to dielectric loss in a high-frequency electric field. I have.
【００１７】また、前記高周波誘電加熱装置１０により
加熱される対象物は絶縁物（誘電体）に限定され、前記
絶縁物であっても、ポリ塩化ビニルのように良く発熱す
るものと、ポリプロピレンのように殆ど発熱しないもの
がある。The object to be heated by the high-frequency dielectric heating device 10 is limited to an insulator (dielectric). Even the insulator, which generates heat well like polyvinyl chloride, and polypropylene. Some do not generate much heat.
【００１８】高周波銹導加熱装置２０は、前記高周波誘
電加熱装置１０の金型１１付近に配置されており、前記
高周波誘導加熱装置２０の両電極部２１よりコイル２２
が接続されている。また、該コイル２２は、高周波誘電
加熱装置１０の金型１１の周囲に非接触状態にて巻回さ
れている。The high-frequency rust heating device 20 is disposed near the mold 11 of the high-frequency induction heating device 10, and is provided with a coil 22 from both electrode portions 21 of the high-frequency induction heating device 20.
Is connected. The coil 22 is wound around the mold 11 of the high-frequency dielectric heating device 10 in a non-contact state.
【００１９】前記高周波誘導加熱装置２０は、金属の表
面焼き入れや金属の溶解等に古くから利用されている。
高周波誘導熱は、金属物質が高周波磁界中で電磁誘導に
よる渦電流のために発熱するものであり、金型１１の瞬
間加熱および瞬間冷却を繰り返し行うことができる。な
お、前記高周波誘導加熱装置２０により、金型１１に供
給される温度は最高５００℃以上に上昇する。The high-frequency induction heating device 20 has been used for a long time for quenching the surface of a metal or melting a metal.
The high-frequency induction heat generates heat due to an eddy current caused by electromagnetic induction in a high-frequency magnetic field in a metal material, and can repeatedly perform instantaneous heating and instantaneous cooling of the mold 11. Note that the temperature supplied to the mold 11 by the high-frequency induction heating device 20 rises to a maximum of 500 ° C. or higher.
【００２０】また、前記高周波誘導加熱装置２０は、冷
却時間中に金型１１の温度を強制冷却により瞬間的に下
げることができる。そのため、従来のように、金型の温
度を高温状態で一定に保持する必要がなく、金型の接触
による作業者の火傷を解消することができる。更に、熱
可塑性樹脂の溶着仕上り状態の美観を向上させることが
できる。Further, the high-frequency induction heating device 20 can instantaneously lower the temperature of the mold 11 by forced cooling during the cooling time. Therefore, unlike the related art, it is not necessary to keep the temperature of the mold constant in a high temperature state, and it is possible to eliminate a burn of an operator due to contact of the mold. Further, it is possible to improve the aesthetic appearance of the welded state of the thermoplastic resin.
【００２１】なお、前記高周波誘導加熱装置２０の誘導
加熱方法は、高周波ウェルダーの発振器をそのまま利用
する方法と、周波数を変えて独立した波誘導加熱装置を
取り付けて効率良くする方法とがある。The induction heating method of the high-frequency induction heating device 20 includes a method in which an oscillator of a high-frequency welder is used as it is and a method in which an independent wave induction heating device is mounted at a different frequency to improve efficiency.
【００２２】次に、本発明の高周波溶着装置を用いた熱
可塑性樹脂の溶着方法を図２および図３に基づいて説明
する。Next, a method for welding a thermoplastic resin using the high frequency welding apparatus of the present invention will be described with reference to FIGS.
【００２３】図２に示すように、前記高周波誘電加熱装
置１０の金型保持具１２に、適宜形状の金型１１を保持
固定する。また、該金型１１の下部に、ポリプロピレン
を含む熱可塑性樹脂３０を配置させる。なおこの時、金
型１１の周囲には、高周波誘導加熱装置２０の両電極部
より接続されているコイル２２が非接触状態で巻回され
ている。As shown in FIG. 2, a mold 11 having an appropriate shape is held and fixed to a mold holder 12 of the high-frequency dielectric heating apparatus 10. In addition, a thermoplastic resin 30 containing polypropylene is disposed below the mold 11. At this time, a coil 22 connected from both electrode portions of the high-frequency induction heating device 20 is wound around the mold 11 in a non-contact state.
【００２４】上記状態にて、図３に示すように、高周波
誘電加熱装置１０を始動させ、金型１１にて熱可塑性樹
脂３０を押圧させる。押圧すると、高周波誘電加熱装置
１０の誘電加熱による高周波電界にて熱可塑性樹脂３０
が加熱される。また同時に、高周波誘導加熱装置２０の
誘導加熱により金型１１を瞬間的に加熱する。In this state, as shown in FIG. 3, the high-frequency dielectric heating device 10 is started, and the thermoplastic resin 30 is pressed by the mold 11. When pressed, the thermoplastic resin 30 is heated by a high-frequency electric field generated by dielectric heating of the high-frequency dielectric heating device 10.
Is heated. At the same time, the mold 11 is instantaneously heated by the induction heating of the high-frequency induction heating device 20.
【００２５】上述のように、誘電加熱と誘導加熱により
熱可塑性樹脂３０と金型１１を同時に加熱ことにより、
ポリプロピレンを含む全ての熱可塑性樹脂を容易に、且
つ確実に溶着することができる。また、熱可塑性樹脂３
０の溶着部分は、バリや凹凸が少なく美観も向上する。
なお溶着後、金型１１は強制冷却される。As described above, by simultaneously heating the thermoplastic resin 30 and the mold 11 by dielectric heating and induction heating,
All thermoplastic resins including polypropylene can be easily and reliably welded. In addition, thermoplastic resin 3
The welded portion of 0 has less burrs and unevenness, and the appearance is also improved.
After welding, the mold 11 is forcibly cooled.
【００２６】[0026]
【発明の効果】以上説明してきたように本発明の高周波
溶着方法およびその装置は、以下に示す効果を奏するも
のである。As described above, the high-frequency welding method and apparatus according to the present invention have the following effects.
【００２７】高周波誘電加熱装置と高周波誘導加熱装置
とを併用することにより、誘電加熱による高周波電界に
て熱可塑性樹脂を加熱すると共に、誘導加熱により金型
を瞬間的に加熱させることにより、ポリプロピレンを含
む全ての熱可塑性樹脂を容易に、且つ確実に溶着するこ
とができる。さらに、溶着部分の美観も向上させること
ができる。By using a high-frequency dielectric heating device and a high-frequency induction heating device in combination, the thermoplastic resin is heated by a high-frequency electric field generated by dielectric heating, and the mold is instantaneously heated by induction heating. It is possible to easily and surely weld all the thermoplastic resins including the resin. Further, the appearance of the welded portion can be improved.
【００２８】また、高周波誘導加熱装置により金型を強
制冷却させるので、従来より発生した、金型の接触によ
る作業者の火傷を解消することができる。Further, since the mold is forcibly cooled by the high-frequency induction heating device, it is possible to eliminate the burn of the operator caused by the contact of the mold, which has conventionally occurred.
【図１】本発明の高周波溶着装置の全体斜視図を表す。FIG. 1 is an overall perspective view of a high-frequency welding apparatus according to the present invention.
【図２】前記高周波溶着装置により熱可塑性樹脂を溶着
する方法を表す。FIG. 2 shows a method of welding a thermoplastic resin by the high frequency welding apparatus.
【図３】前記高周波溶着装置により熱可塑性樹脂を溶着
する方法を表す。FIG. 3 shows a method of welding a thermoplastic resin by the high frequency welding device.
１・・・高周波溶着装置 １０・・高周波誘電加熱装置 １１・・金型 １２・・金型保持具 １３・・台 ２０・・高周波誘導加熱装置 ２１・・電極 ２２・・コイル ３０・・熱可塑性樹脂 DESCRIPTION OF SYMBOLS 1 ... High frequency welding device 10 ... High frequency dielectric heating device 11 ... Mold 12 ... Mold holder 13 ... Stand 20 ... High frequency induction heating device 21 ... Electrode 22 ... Coil 30 ... Thermoplastic resin
Claims (3)
周波誘導加熱装置の誘導加熱を併用したフィルム・シー
トの高周波溶着方法。1. A high-frequency welding method for a film or sheet using both dielectric heating of a high-frequency induction heating device and induction heating of a high-frequency induction heating device.
設置された金型と、該金型の周囲に巻回された、前記高
周波誘導加熱装置より接続されたコイルとで形成される
高周波溶着装置。2. A high-frequency welding formed by a mold installed in the high-frequency dielectric heating device according to claim 1, and a coil wound around the mold and connected by the high-frequency induction heating device. apparatus.
態に巻回した請求項２記載の高周波溶着装置。3. The high-frequency welding apparatus according to claim 2, wherein the coil is wound around a die in a non-contact state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29750998A JP2000085014A (en) | 1998-09-11 | 1998-09-11 | Method and apparatus for high frequency welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29750998A JP2000085014A (en) | 1998-09-11 | 1998-09-11 | Method and apparatus for high frequency welding |
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| Publication Number | Publication Date |
|---|---|
| JP2000085014A true JP2000085014A (en) | 2000-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29750998A Pending JP2000085014A (en) | 1998-09-11 | 1998-09-11 | Method and apparatus for high frequency welding |
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| JP (1) | JP2000085014A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024143963A (en) * | 2023-03-30 | 2024-10-11 | 明遠精密科技股▲分▼有限公司 | Composite rapid annealing apparatus and method |
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1998
- 1998-09-11 JP JP29750998A patent/JP2000085014A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024143963A (en) * | 2023-03-30 | 2024-10-11 | 明遠精密科技股▲分▼有限公司 | Composite rapid annealing apparatus and method |
| JP7604564B2 (en) | 2023-03-30 | 2024-12-23 | 明遠精密科技股▲分▼有限公司 | Composite rapid annealing apparatus and method |
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