JPH08127070A - Joining member and production thereof - Google Patents

Joining member and production thereof

Info

Publication number
JPH08127070A
JPH08127070A JP6290437A JP29043794A JPH08127070A JP H08127070 A JPH08127070 A JP H08127070A JP 6290437 A JP6290437 A JP 6290437A JP 29043794 A JP29043794 A JP 29043794A JP H08127070 A JPH08127070 A JP H08127070A
Authority
JP
Japan
Prior art keywords
joining
joining member
diameter
tube
main body
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
Application number
JP6290437A
Other languages
Japanese (ja)
Inventor
Fujio Wada
富士男 和田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SB Kawasumi Laboratories Inc
Original Assignee
Kawasumi Laboratories Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasumi Laboratories Inc filed Critical Kawasumi Laboratories Inc
Priority to JP6290437A priority Critical patent/JPH08127070A/en
Publication of JPH08127070A publication Critical patent/JPH08127070A/en
Pending legal-status Critical Current

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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02241—Cutting, e.g. by using waterjets, or sawing
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/005—Hoses, i.e. flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain a joining member having a joining part formed by increasing the wall thickness of the end part of a tubular main body. CONSTITUTION: A joining member 1 wherein a thick-walled joining part 2 having a diameter larger than that of a tubular main body 1a made of a synthetic resin is formed to the end part of the tubular main body is produced by a method wherein a core metal capable of being inserted in the joining member 1 is arranged to the central part of a cylindrical insulator and a ring-shaped electrode having a diameter larger than the outer diameter of the joining member 1 is provided to the inside of the insulator and, after the joining member 1 is mounted on the core metal, the joining member 1 is pushed in toward the core metal while high-frequency waves are applied to form the thick-walled joining part 2 having a diameter larger than that of the tubular main body 1a to the end part of the tubular main body. Since the joining part 2 is increased in thickness to be reinforced, sufficient joining strength can be obtained while an inner diameter is held at the time of joining.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、合成樹脂製チューブか
らなる接合部材及び、その製造方法に関する。さらに詳
しくは、高周波ウエルダーを用いてチューブ状本体の端
部を肉厚化した接合部を有する接合部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining member made of a synthetic resin tube and a method for manufacturing the joining member. More specifically, it relates to a joining member having a joining portion in which an end portion of a tubular body is thickened by using a high frequency welder.

【０００２】[0002]

【従来の技術】従来において、チューブ端部を接合部と
する場合、図６に示したような小径チューブ１１３と大
径チューブ１１４の接合、図７に示したようなチューブ
１１５、１１６とコネクター１１７との接合、チューブ
とシートの接合等があり、チューブ端部の形状は、通常
はストレートであるが、コネクターとの接続用の場合に
は、加熱によるテーパー加工をした接合部材や、押出成
形時にテーパー部を含む加工が行なわれた接合部材が使
用されていた。2. Description of the Related Art Conventionally, when a tube end portion is used as a joint, a small diameter tube 113 and a large diameter tube 114 as shown in FIG. 6 are joined, and tubes 115 and 116 and a connector 117 as shown in FIG. 7 are joined. The shape of the tube end is usually straight, but when connecting with a connector, when joining with a connector that is tapered by heating or during extrusion molding A joining member that has been processed including the tapered portion has been used.

【０００３】[0003]

【従来技術の課題】 小径チューブ１１３と大径チューブ１１４（コネクタ
ー含）の溶剤あるいは、ブロッキングを用いた接合時の
場合、小径チューブ１１３が柔軟性に富んだチューブ
や、カテーテルの細径サイズのように、肉厚の薄いチュ
ーブの場合、液密性を持たせて接合させるためその外径
を大径チューブ１１４の肉径より若干大きくして少しき
つめの嵌合にしてあるので、図６のように接合部１１８
が大径チューブ１１４の圧力に押されて接合後の小径チ
ューブ１１３の内径が小さくなることがあった。2. Description of the Related Art When a small-diameter tube 113 and a large-diameter tube 114 (including a connector) are joined by using a solvent or blocking, the small-diameter tube 113 has a high flexibility and a small diameter of a catheter. In the case of a thin-walled tube, the outer diameter of the tube is slightly larger than the wall diameter of the large-diameter tube 114 in order to join them with liquid tightness. To the joint 118
In some cases, the inner diameter of the small diameter tube 113 after joining was reduced due to the pressure of the large diameter tube 114.

【０００４】小径チューブ１１３と大径チューブ１１
４や２枚のシートをコアピンを使用せず、外側から高周
波ウエルダー等のヒートシールによって熱及び圧力を加
えて接合する場合において、同様に小径チューブ１１３
の内径が小さくなったり、圧力がかかった際に小径チュ
ーブ１１３が、潰れるため、圧力不足により、接合が弱
くなったりすることがあった。Small diameter tube 113 and large diameter tube 11
Similarly, in the case of joining four or two sheets by applying heat and pressure from the outside by heat sealing such as a high frequency welder without using core pins, the small diameter tube 113
In some cases, the inner diameter of the tube becomes small, or the small-diameter tube 113 is crushed when pressure is applied, resulting in insufficient bonding due to insufficient pressure.

【０００５】図７のように小径チューブ１１５と大径
チューブ１１６の接合時、小径チューブ１１５の外径
が、大径チューブ１１６の内径を越えているときは、小
径チューブ１１５の外径、大径チューブ１１６の内径と
それぞれ接合するコネクター１１７が必要となり、２か
所の接合が必要となる。When the small diameter tube 115 and the large diameter tube 116 are joined as shown in FIG. 7, and the outer diameter of the small diameter tube 115 exceeds the inner diameter of the large diameter tube 116, the outer diameter and the large diameter of the small diameter tube 115. A connector 117 is required to be joined to the inner diameter of the tube 116, and joining at two locations is required.

【０００６】加熱によるテーパー加工を行う場合、高
周波ウエルダーと異なり、加工に時間かかかるため、加
工治具が多く必要になることや、テーパー部が肉薄にな
るなどの問題があった。When performing taper processing by heating, unlike a high-frequency welder, it takes a long time to process, so that there are problems that a large number of processing jigs are required and the taper portion becomes thin.

【０００７】押出成形時にテーパー部を含む加工を行
うには、専用の押し出し成形機が必要な上、テーパ部を
選定し、切断する工程が必要になるなど、コスト高の要
因があった。In order to perform processing including a taper portion at the time of extrusion molding, a dedicated extrusion molding machine is required, and a step of selecting and cutting the taper portion is required, which is a factor of high cost.

【０００８】[0008]

【課題を解決するための手段】本発明は、かかる問題を
解決すべく、鋭意検討されたものであり、（１）本発明
は、合成樹脂製のチューブ状本体の端部にチューブ状本
体より大径で肉厚の接合部を形成したことを特徴とする
接合部材である。（２）本発明は、円筒状の絶縁体の中
央部に接合部材の内側に挿入できる芯金を配置し、絶縁
体の内側に接合部材の外径より大径のリング状の電極を
設け、接合部材を芯金に装着後、高周波を印加させなが
ら、接合部材を芯金方向に押し込んでチューブ状本体の
端部にチューブ状本体より大径で肉厚の接合部を形成す
ることを特徴とする（１）に記載の接合部材の製造方法
である。The present invention has been earnestly studied in order to solve the above problems. (1) The present invention has a tubular main body made of a synthetic resin, which is attached to an end portion of the tubular main body. The joining member is characterized in that a joining portion having a large diameter and a large thickness is formed. (2) In the present invention, a cored bar that can be inserted inside the joining member is arranged at the center of the cylindrical insulator, and a ring-shaped electrode having a diameter larger than the outer diameter of the joining member is provided inside the insulator. After the joining member is mounted on the core metal, the joining member is pushed in the direction of the core metal while applying a high frequency to form a joint portion having a diameter larger than that of the tubular body at the end of the tubular body. (1) is a manufacturing method of the joining member.

【０００９】[0009]

【実施例】図１は、本発明の接合部材１の実施例を示す
概略図で、チューブ状本体１ａの端部にチューブ状本体
１ａより大径で肉厚の接合部２を形成したものである。1 is a schematic view showing an embodiment of a joining member 1 of the present invention, in which a joining portion 2 having a diameter larger than that of the tubular body 1a is formed at an end portion of the tubular body 1a. is there.

【００１０】図２は、図１の接合部材１とチューブ３と
の接合例である。チューブ状本体１ａ端部の肉厚の接合
部２がチューブ３の内側端部に接合されている。接合部
２は肉厚に補強されているため、内径４が保たれてい
る。FIG. 2 shows an example of joining the joining member 1 and the tube 3 shown in FIG. The thick joint 2 at the end of the tubular body 1a is joined to the inner end of the tube 3. Since the joint portion 2 is reinforced with a thick wall, the inner diameter 4 is maintained.

【００１１】図３は、医療用バッグ５への接合例であ
る。肉厚の接合部２を二枚のシートの間にはさんで、高
周波ウエルダーを外側から印加するのみで、コアピンを
使用せずに強固に接合させることができ、接合部材１の
保持強度も向上させることができる。FIG. 3 shows an example of joining to the medical bag 5. By sandwiching the thick joint 2 between the two sheets and applying a high-frequency welder from the outside, it is possible to firmly join without using a core pin, and the holding strength of the joining member 1 is also improved. Can be made.

【００１２】図４は図１の接合部材１の接合部２に代え
て、内側をテーパー加工した接合部２ａを有する接合部
材１Ａの概略図である。FIG. 4 is a schematic view of a joint member 1A having a joint portion 2a whose inner side is tapered instead of the joint portion 2 of the joint member 1 of FIG.

【００１３】図５は、本発明の接合部材１の製造法を示
したもので、チューブ８を芯金９に装填し、芯金９に対
して同軸状に、電極１０、絶縁材１１が配置されてい
る。絶縁材１１は、図５に示したとうり、円筒状になっ
ており、芯金９は、絶縁材１１の中央部に設けられてい
る。接合部材１を製造するには、チューブ８をクランプ
１２で、保持し、電極１０、芯金９に高周波を印加させ
ながら芯金９の方向へ押し込み、チューブ８の構成材料
を溶融させて電極１０の内側の空間Ｓ内に充填し、接合
部２を形成する。接合部２のサイズと形状は、芯金９の
径と長さ、電極１０、絶縁材１１の径と深さ、クランプ
１２で押し込む距離、及び電極１０の内側の形状などを
組み合わせることにより多種のサイズと形状への対応が
可能である。また、芯金９をテーパー状にすることによ
り、図４に示したような、接合部２ａの内側がテーパー
状になった接合部材１Ａの製造も可能となる。以上の実
施例に上げた接合部材１、１Ａ、チューブ８の構成材料
は、いずれも軟質ポリ塩化ビニル樹脂製のものが使用さ
れるが、接着剤による接合や、高周波ウエルダーによる
接合が可能な他の合成樹脂製のチューブの使用が可能な
ことは言うまでもないことである。FIG. 5 shows a method for manufacturing the joining member 1 of the present invention. A tube 8 is loaded on a core metal 9 and an electrode 10 and an insulating material 11 are arranged coaxially with the core metal 9. Has been done. The insulating material 11 has a cylindrical shape as shown in FIG. 5, and the cored bar 9 is provided in the central portion of the insulating material 11. In order to manufacture the joining member 1, the tube 8 is held by the clamp 12, and the electrode 10 and the cored bar 9 are pushed in the direction of the cored bar 9 while applying a high frequency to melt the constituent material of the tube 8 to melt the electrode 10. The space S inside is filled to form the joint 2. The size and shape of the joint portion 2 can be varied by combining the diameter and length of the core metal 9, the diameter and depth of the electrode 10, the insulating material 11, the distance to be pushed by the clamp 12, and the shape inside the electrode 10. It is possible to adapt to size and shape. Further, by making the cored bar 9 tapered, it is possible to manufacture the joining member 1A in which the inside of the joining portion 2a is tapered as shown in FIG. As the constituent materials of the joining members 1 and 1A and the tube 8 described in the above examples, those made of soft polyvinyl chloride resin are used, but they can be joined by an adhesive or joined by a high frequency welder. It goes without saying that it is possible to use the synthetic resin tube of.

【００１４】[0014]

【発明の作用効果】小径チューブと大径チューブの接合
時、接合部が大径チューブの圧力に押されて接合後の小
径チューブの内径が小さくなることがあったり、小径チ
ューブと大径チューブや２枚のシートを外側から高周波
ウエルダー等のヒートシールによって熱及び圧力を加え
て接合する場合において、小径チューブの内径が小さく
なったり、接合強度が弱くなったりすることがあった
が、このような接合部の強度不足に対して、本発明は、
接合部の肉厚が厚く補強されているので、接合時に内径
を保持した上で、接合強度をも十分に得ることができ
る。接合する大径チューブの内径が、小径チューブの外
径を越えているときの接合の場合、小径チューブの接合
部の外径を大きくできるので コネクターを使用せず
に、接合が可能である。高周波ウエルダーにより、接合
部の内側のテーパー加工を短時間に行うことができるの
で、他の加工法に比べコストがかからない。接合部の内
側がテーパー加工されるので、テーパー部が肉薄になる
ことがないなどの利点がある。When the small diameter tube and the large diameter tube are joined, the joint portion may be pressed by the pressure of the large diameter tube to reduce the inner diameter of the small diameter tube after joining, or the small diameter tube and the large diameter tube When heat and pressure are applied to the two sheets from the outside by heat sealing such as a high-frequency welder, the inner diameter of the small-diameter tube may become small or the joint strength may become weak. With respect to insufficient strength of the joint portion, the present invention provides
Since the thickness of the joint portion is thick and reinforced, it is possible to obtain sufficient joint strength while maintaining the inner diameter during joining. When the inner diameter of the large diameter tube to be joined exceeds the outer diameter of the small diameter tube, the outer diameter of the joining portion of the small diameter tube can be increased, so it is possible to join without using a connector. The high-frequency welder can taper the inside of the joint portion in a short time, so that it is less expensive than other processing methods. Since the inside of the joint is tapered, there is an advantage that the taper does not become thin.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の接合部材の実施例を示す概略図。FIG. 1 is a schematic view showing an embodiment of a joining member of the present invention.

【図２】図１の使用状態図。FIG. 2 is a use state diagram of FIG.

【図３】図１の使用状態図。FIG. 3 is a use state diagram of FIG.

【図４】本発明の接合部材の実施例を示す概略図。FIG. 4 is a schematic view showing an embodiment of the joining member of the present invention.

【図５】本発明の接合部材の製造方法を示す概略図。FIG. 5 is a schematic view showing a method for manufacturing a joining member of the present invention.

【図６】従来の接合部を示した断面図。FIG. 6 is a cross-sectional view showing a conventional joint portion.

【図７】従来の接合部を示した断面図。FIG. 7 is a cross-sectional view showing a conventional joint portion.

【符合の説明】[Description of sign]

１、１Ａ 接合部材 １ａ チューブ状本体 ２、２ａ 接合部 ３ チューブ ４ 内径 ５ 医療用バッグ ８ チューブ ９ 芯金 １０ 電極 １１ 絶縁材 １２ クランプ 1, 1A Joining member 1a Tube-shaped body 2, 2a Joining part 3 Tube 4 Inner diameter 5 Medical bag 8 Tube 9 Core bar 10 Electrode 11 Insulating material 12 Clamp

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ２９Ｌ 23:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technology display area // B29L 23:00

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】合成樹脂製のチューブ状本体の端部にチュ
ーブ状本体より大径で肉厚の接合部を形成したことを特
徴とする接合部材。1. A joining member characterized in that a joining portion having a diameter and a thickness larger than that of the tubular body is formed at an end portion of the tubular body made of synthetic resin. 【請求項２】円筒状の絶縁体の中央部に接合部材の内側
に挿入できる芯金を配置し、絶縁体の内側に接合部材の
外径より大径のリング状の電極を設け、接合部材を芯金
に装着後、高周波を印加させながら、接合部材を芯金方
向に押し込んでチューブ状本体の端部にチューブ状本体
より大径で肉厚の接合部を形成することを特徴とする請
求項１に記載の接合部材の製造方法。2. A core member, which can be inserted into the inside of the joining member, is arranged in the central portion of a cylindrical insulator, and a ring-shaped electrode having a diameter larger than the outer diameter of the joining member is provided inside the insulator. After mounting on the core metal, the joining member is pushed in the direction of the core metal while applying high frequency to form a joint part having a diameter larger than that of the tubular body at the end of the tubular body. Item 2. A method for manufacturing a joining member according to item 1.
JP6290437A 1994-10-31 1994-10-31 Joining member and production thereof Pending JPH08127070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6290437A JPH08127070A (en) 1994-10-31 1994-10-31 Joining member and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6290437A JPH08127070A (en) 1994-10-31 1994-10-31 Joining member and production thereof

Publications (1)

Publication Number Publication Date
JPH08127070A true JPH08127070A (en) 1996-05-21

Family

ID=17756026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6290437A Pending JPH08127070A (en) 1994-10-31 1994-10-31 Joining member and production thereof

Country Status (1)

Country Link
JP (1) JPH08127070A (en)

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