JP4696624B2 - High frequency dielectric heating electrode type - Google Patents
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- JP4696624B2 JP4696624B2 JP2005084054A JP2005084054A JP4696624B2 JP 4696624 B2 JP4696624 B2 JP 4696624B2 JP 2005084054 A JP2005084054 A JP 2005084054A JP 2005084054 A JP2005084054 A JP 2005084054A JP 4696624 B2 JP4696624 B2 JP 4696624B2
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本発明は、熱可塑性樹脂製の円筒状部材同士を接合するのに適した高周波誘電加熱電極型に関するものである。 The present invention relates to a high-frequency dielectric heating electrode type suitable for joining cylindrical members made of thermoplastic resin.
高周波誘電加熱原理を応用した熱可塑性を有するプラスチック部品同士の溶着技術は、シート状の成形品同士の溶着をはじめ広く普及している。誘電体に発熱部位を与える高周波誘電加熱回路を成す導電体は高周波誘電加熱電極と称され、高周波交流電界中で発熱し軟化又は溶融状態となった誘電体が高周波交流電界の印加の停止と共に温度降下する際、誘電体の形状を保持する役割も成す。このため高周波誘電加熱電極形状においては、誘電体の発熱後の出来栄えを考慮し様々な形状が工夫され応用されてきた。これまで比較的大きな接合面積を要するシート状の成形品溶着加工に応用されてきた高周波誘電加熱溶着において、高周波誘電加熱電極形状の工夫は、広範囲な接合面積を均一かつ短時間で加工するものに主眼が置かれてきた。（特許文献１）
加熱加工したい部品そのもの自体を短時間で発熱させることができ、急速な加熱冷却を繰り返すことが可能な高周波誘電加熱溶着装置は、部品同士の接合強度の確保やその生産性に有利な点が多く、小さな部品への応用範囲が拡大されつつある。しかし、薄肉で極小の成形品の部分接合などに供するときには、高周波誘電加熱溶着装置の高周波発振出力を制御することはもとより、接合部位以外への発熱の影響を押さえる工夫が必要である。図１は、内腔を有する薄肉で細長いチューブ同士の接合を目的とした高周波誘電加熱電極との位置関係を示したものであり、１はチューブ、２は高周波誘電加熱電極を表す。図２は、接合加工前のチューブ断面を示し、図３は接合加工後のチューブ断面を示す。良好な接合強度を得る為には、発熱したチューブ同士が加圧され密着しあうことが必要となるが、接合端面の段差やくびれ、高周波誘電加熱電極との接触端面からの溶融樹脂のはみ出し等の意図しない変形が発生しやすいという欠点があった。
2. Description of the Related Art A technique for welding plastic parts having thermoplasticity to which the high-frequency dielectric heating principle is applied is widely used including welding of sheet-like molded products. A conductor that forms a high-frequency dielectric heating circuit that gives a heat-generating part to the dielectric is called a high-frequency dielectric heating electrode, and the dielectric that generates heat and softens or melts in the high-frequency AC electric field has a temperature when the application of the high-frequency AC electric field stops. When descending, it also serves to hold the shape of the dielectric. For this reason, various shapes have been devised and applied in the shape of the high frequency dielectric heating electrode in consideration of the performance after the heat generation of the dielectric. In high-frequency dielectric heating welding, which has been applied to sheet-like molded product welding processes that require a relatively large bonding area, the high-frequency dielectric heating electrode shape is designed to process a wide range of bonding areas uniformly and in a short time. The main focus has been placed. (Patent Document 1)
The high frequency dielectric heating and welding equipment that can generate heat in a short time for the part itself to be heat-processed and can be repeatedly heated and cooled has many advantages in securing the joint strength between parts and in productivity. The range of applications for small parts is expanding. However, when it is used for partial joining of a thin and extremely small molded product, it is necessary to devise a technique for suppressing the influence of heat generation on the part other than the joining part as well as controlling the high-frequency oscillation output of the high-frequency dielectric heating welding apparatus. FIG. 1 shows a positional relationship with a high-frequency dielectric heating electrode for the purpose of joining thin and long tubes having an inner lumen, where 1 is a tube and 2 is a high-frequency dielectric heating electrode. FIG. 2 shows a tube cross section before the bonding process, and FIG. 3 shows a tube cross section after the bonding process. In order to obtain good bonding strength, it is necessary for the heated tubes to be pressed and adhered to each other. However, the step and constriction of the bonding end face, the protrusion of molten resin from the contact end face with the high frequency dielectric heating electrode, etc. There was a drawback that unintentional deformation of this was likely to occur.
可撓性を有するチューブ同士の接合加工品において、その接合部分に曲げ応力が加わるとき、接合端面の段差やくびれ、高周波誘電加熱電極との接触端面からの溶融樹脂のはみ出し箇所等は応力集中点となりやすく、チューブの柔軟性低下として割れやキンク、破断強度の低下といった不具合を生ずる問題があった。
本発明は、上記事情に鑑みてなされたものであり、その目的は、高周波誘電加熱溶着加工においてチューブ同士の継ぎ目部分に、割れやキンク、破断強度の低下することのない、高周波誘電加熱電極を提供すること。
The present invention has been made in view of the above circumstances, and its object is the joint portion of the tube between the high-frequency dielectric heating fusion bonding, cracks or kinks, not to decrease the breaking strength, high-frequency induction electric heating electrodes To provide.
このような目的は、下記（１）に記載の本発明により達成される。
（１）第一のチューブと、第二のチューブとを、その一部を積層接合して接合部を形成するために用いる高周波誘電加熱電極型であって、
前記接合部を配置可能な凹部を有する第一の加熱用電極型および前記接合部の内腔に挿入される第二の加熱用電極型で構成され、
前記接合部を配置可能な凹部はテーパー部を有しており、
前記第一の加熱用電極型の前記接合部の配置可能な凹部の長手方向の側部の少なくとも一方または周囲に各チューブの形状を保持する絶縁体からなる保持部材を設けていることを特徴とする高周波誘電加熱電極型。
Such an object is achieved by the present invention described in the following (1).
(1) A high frequency dielectric heating electrode type used for forming a joint by laminating and joining a part of the first tube and the second tube,
It is composed of a first heating electrode mold having a recess in which the joint portion can be arranged, and a second heating electrode mold inserted into the lumen of the joint portion ,
The concave portion where the joint portion can be arranged has a tapered portion,
A holding member made of an insulator that holds the shape of each tube is provided on at least one side or the periphery of the longitudinal side portion of the concave portion where the joint portion of the first heating electrode type can be arranged. High frequency dielectric heating electrode type.
本発明によれば、高周波誘電加熱溶着加工においてチューブ同士の継ぎ目部分に、割れやキンク、破断強度の低下することのない、高周波誘電加熱電極を提供することができる。
According to the present invention, the joint portion of the tube between the high-frequency dielectric heating fusion bonding, cracks or kinks, reduced not to the breaking strength, can provide a high-frequency induction electric heating electrodes.
以下、本発明の高周波誘導加熱電極について説明する。 Hereinafter, the high frequency induction heating electrode of the present invention will be described.
本発明にて実施するチューブ接合は、チューブ同士の一部を嵌合させた状態で高周波誘電加熱電極間に配置し積層接合する。接合するチューブ同士の一方は、その内腔にもう一方のチューブが嵌合可能な内径を有するか、または接合部位にあたる端部の内径をあらかじめ拡張する等して嵌合可能な内径を確保する。こうして双方のチューブを嵌合させた部位で積層接合する。 The tube joining performed in the present invention is arranged between the high frequency dielectric heating electrodes in a state in which a part of the tubes is fitted and laminated and joined. One of the tubes to be joined has an inner diameter in which the other tube can be fitted into the lumen, or an inner diameter that can be fitted is secured by, for example, expanding the inner diameter of the end corresponding to the joined portion in advance. In this way, lamination joining is performed at the site where both the tubes are fitted.
本発明を用いた高周波誘電加熱電極型は、接合されるチューブ同士を配置可能な凹部を有し、外周方向から加圧可能な第一及び第二の加熱用電極型で構成されている。更にチューブ接合部の長手方向に面する加熱用電極型の両側面に、各チューブの形状を保持する保持部材が配置され、加熱用電極型による発熱影響を受ける範囲のチューブ変形を抑え込む事を可能としている。 The high-frequency dielectric heating electrode type using the present invention has first and second heating electrode types that have recesses in which tubes to be joined can be arranged and can be pressurized from the outer peripheral direction. In addition, holding members that hold the shape of each tube are arranged on both sides of the heating electrode mold facing the longitudinal direction of the tube joint, and it is possible to suppress deformation of the tube in the range affected by the heat generated by the heating electrode mold. It is said.
加熱用電極型の両側面に配置される接合部近傍の形状保持を目的とする保持部材には、高周波誘電加熱回路上で発熱し難く熱変形しない絶縁体として熱硬化性樹脂やセラミック等を用いるのが好ましく、加工性の良いフェノール樹脂が好適である。 For the holding member for the purpose of maintaining the shape in the vicinity of the joint disposed on both sides of the heating electrode mold, a thermosetting resin or ceramic is used as an insulator that does not generate heat easily and does not deform on the high frequency dielectric heating circuit. Of these, a phenol resin having good processability is preferable.
図４は、本発明によるチューブ同士の接合において高周波誘電加熱電極型との位置関係を示したものであり、１はチューブ、２は高周波誘電加熱電極型、３は絶縁体の形状保持部材である。図５は本発明によるチューブ接合の１実施例の断面図であって、重なり合ったチューブが加圧されながら電極２間の高周波交流電界中で発熱し、軟化又は溶融状態となった時の樹脂流動を形状保持部材３で押える。継ぎ目においては、溶融樹脂の流出が抑制されていることから充分に加圧されていて、くびれが発生し難くなっている。また、電極の形状に合わせて滑らかな形状とすることが可能である。
FIG. 4 shows the positional relationship with the high-frequency dielectric heating electrode type in the joining of the tubes according to the present invention, where 1 is a tube, 2 is a high-frequency dielectric heating electrode type, and 3 is an insulating shape holding member. . FIG. 5 is a cross-sectional view of an embodiment of the tube joint according to the present invention, in which the overlapping tubes generate heat in a high-frequency AC electric field between the
医療用チューブ等の可撓性を有するチューブ同士の接合加工において、充分な接合強度を確保しつつ、柔軟性を低下させること無く、また接着の影響を排除したい用途にも適用できる。 In joining of flexible tubes such as medical tubes, it can be applied to applications where it is desired to eliminate the influence of adhesion without deteriorating flexibility while ensuring sufficient joint strength.
１ チューブ
２ 高周波誘電加熱電極型
３ 絶縁体の形状保持部材
DESCRIPTION OF
Claims (1)
前記接合部を配置可能な凹部を有する第一の加熱用電極型および前記接合部の内腔に挿入される第二の加熱用電極型で構成され、
前記接合部を配置可能な凹部はテーパー部を有しており、
前記第一の加熱用電極型の前記接合部の配置可能な凹部の長手方向の側部の少なくとも一方または周囲に各チューブの形状を保持する絶縁体からなる保持部材を設けていることを特徴とする高周波誘電加熱電極型。 The first tube and the second tube are a high-frequency dielectric heating electrode type used to form a joint by laminating and joining a part of the first tube,
It is composed of a first heating electrode mold having a recess in which the joint portion can be arranged, and a second heating electrode mold inserted into the lumen of the joint portion ,
The concave portion where the joint portion can be arranged has a tapered portion,
A holding member made of an insulator that holds the shape of each tube is provided on at least one side or the periphery of the longitudinal side portion of the concave portion where the joint portion of the first heating electrode type can be arranged. High frequency dielectric heating electrode type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005084054A JP4696624B2 (en) | 2005-03-23 | 2005-03-23 | High frequency dielectric heating electrode type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005084054A JP4696624B2 (en) | 2005-03-23 | 2005-03-23 | High frequency dielectric heating electrode type |
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| JP2006269197A JP2006269197A (en) | 2006-10-05 |
| JP4696624B2 true JP4696624B2 (en) | 2011-06-08 |
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| JP7204218B2 (en) * | 2020-04-13 | 2023-01-16 | 山本ビニター株式会社 | High frequency electrode structure and high frequency dielectric heating device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS601495A (en) * | 1983-06-15 | 1985-01-07 | キヨ−ラク株式会社 | Method of joining synthetic resin tubular member |
| JPH02192929A (en) * | 1989-01-20 | 1990-07-30 | Sekisui Chem Co Ltd | Bonding method for resin tube |
| JPH03136832A (en) * | 1989-10-20 | 1991-06-11 | Kubota Corp | Method for thermal welding of plastic pipe |
| JPH05104633A (en) * | 1991-07-04 | 1993-04-27 | Nippon Medical Supply Corp | Resin tube bonded body and production thereof |
| JPH06297577A (en) * | 1993-04-19 | 1994-10-25 | Inoac Corp | Structure of high frequency joining mold of molding terminal |
| JP2004100767A (en) * | 2002-09-06 | 2004-04-02 | Flowell Corp | Joint structure of resin tube |
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2005
- 2005-03-23 JP JP2005084054A patent/JP4696624B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS601495A (en) * | 1983-06-15 | 1985-01-07 | キヨ−ラク株式会社 | Method of joining synthetic resin tubular member |
| JPH02192929A (en) * | 1989-01-20 | 1990-07-30 | Sekisui Chem Co Ltd | Bonding method for resin tube |
| JPH03136832A (en) * | 1989-10-20 | 1991-06-11 | Kubota Corp | Method for thermal welding of plastic pipe |
| JPH05104633A (en) * | 1991-07-04 | 1993-04-27 | Nippon Medical Supply Corp | Resin tube bonded body and production thereof |
| JPH06297577A (en) * | 1993-04-19 | 1994-10-25 | Inoac Corp | Structure of high frequency joining mold of molding terminal |
| JP2004100767A (en) * | 2002-09-06 | 2004-04-02 | Flowell Corp | Joint structure of resin tube |
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| JP2006269197A (en) | 2006-10-05 |
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