JPH0822570B2 - Resin tube tip processing method - Google Patents
Resin tube tip processing methodInfo
- Publication number
- JPH0822570B2 JPH0822570B2 JP1604689A JP1604689A JPH0822570B2 JP H0822570 B2 JPH0822570 B2 JP H0822570B2 JP 1604689 A JP1604689 A JP 1604689A JP 1604689 A JP1604689 A JP 1604689A JP H0822570 B2 JPH0822570 B2 JP H0822570B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- resin tube
- tip
- insertion part
- tube
- 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.)
- Expired - Fee Related
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
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
- B29C65/30—Electrical means
- B29C65/32—Induction
-
- 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
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/10—Closing
-
- 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
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt 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
- B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness of the parts to be joined
-
- 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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
- B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、誘導加熱を利用して樹脂チューブの先端部
を加熱成形し該チューブの先端を閉塞する樹脂チューブ
の先端加工方法に関する。Description: TECHNICAL FIELD The present invention relates to a resin tube tip processing method in which the tip portion of a resin tube is thermoformed using induction heating to close the tip of the tube.
（従来の技術） 従来より、体内に薬液注入を行なうために、カテーテ
ルと呼ばれる樹脂チューブが使用されている。この樹脂
チューブは、第３図に示すように、先端が半球形状に形
成された軟質塩化ビニル等の樹脂チューブ10からなり、
その先端部に液注入のための透孔11を有している。とこ
ろで、従来このような樹脂チューブ10の先端を半球形状
に形成するための加工方法として、一般に、有底の金型
に設けられた挿入部内に樹脂チューブ10を挿入し、金型
をヒータにて外部から加熱することにより、金型内で樹
脂チューブ10の先端部を加熱成形する方法が採用されて
いる。この方法によれば、加熱成形によって樹脂チュー
ブ10の先端が半球形状に形成された後は、直ちに金型全
体を水冷等により冷却し、樹脂チューブ10の先端部を固
化させてから金型から抜き出すものである。(Prior Art) Conventionally, a resin tube called a catheter has been used to inject a drug solution into the body. As shown in FIG. 3, this resin tube is made of a resin tube 10 such as soft vinyl chloride whose tip has a hemispherical shape,
A through hole 11 for injecting a liquid is provided at its tip. By the way, conventionally, as a processing method for forming the tip of such a resin tube 10 into a hemispherical shape, generally, the resin tube 10 is inserted into an insertion portion provided in a bottomed mold, and the mold is heated by a heater. A method is employed in which the tip portion of the resin tube 10 is thermoformed in the mold by heating from the outside. According to this method, after the tip of the resin tube 10 is formed in a hemispherical shape by heat molding, the entire die is immediately cooled by water cooling or the like to solidify the tip of the resin tube 10 and then the die is pulled out from the die. It is a thing.
（発明が解決しようとする課題） このような従来の先端加工方法において、金型全体を
均一に加熱するために作業能率を向上させようとすると
大容量のヒータが必要になる。しかし、大容量のヒータ
で金型を加熱したとしても、金型の熱容量のためにその
内面が必要温度に達するまでに時間がかかり、金型内に
挿入されている樹脂チューブ10の先端部は急速には加熱
されない。従って、期待するほどの作業能率向上は達成
されない欠点があった。(Problems to be Solved by the Invention) In such a conventional tip processing method, a large-capacity heater is required to improve work efficiency in order to uniformly heat the entire die. However, even if the mold is heated with a large capacity heater, it takes time for the inner surface to reach the required temperature due to the heat capacity of the mold, and the tip of the resin tube 10 inserted into the mold is Does not heat rapidly. Therefore, there is a drawback in that the expected improvement in work efficiency is not achieved.
本発明は、上記従来の問題を解決するものであり、そ
の目的とするところは、樹脂チューブの加熱時間を大巾
に短縮し得て生産効率を高めることができる樹脂チュー
ブの先端加工方法を提供することにある。The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a resin tube tip processing method capable of greatly shortening the heating time of the resin tube and increasing the production efficiency. To do.
（課題を解決するための手段） 本発明の先端加工方法は、内底面が半球形状とされ
た、樹脂チューブの挿入部が設けられ、かつ外周面に凹
部が設けられた金型に、該挿入部を囲むよう冷却用穴を
有する誘導コイルが巻回された金型を使用し、この金型
の挿入部内に樹脂チューブを挿入し、誘導コイルに交流
を通じて金型を誘導加熱することにより、樹脂チューブ
の先端部を挿入部の内底面の形状に沿って成形し、次い
で、該冷却用穴に冷却用チラーを流通させて該チューブ
の先端を閉塞する樹脂チューブの先端加工方法であっ
て、該金型の凹部の最深部が該挿入部の内底面と内側面
との境界の近傍に位置され、該金型の凹部の最深部から
該挿入部の内側面までの垂直に測定される距離が、該金
型の凹部の周縁部から該挿入部の内側面までの垂直に測
定される距離の1/2より小さくされていることを特徴と
してなり、そのことにより上記目的が達成される。(Means for Solving the Problem) A tip processing method of the present invention is to insert a resin tube into which a hemispherical inner bottom surface is provided and which is provided with a resin tube insertion portion and an outer peripheral surface thereof with a recessed portion. By using a mold in which an induction coil having a cooling hole surrounding the part is wound, insert a resin tube into the insertion part of this mold, and induce induction heating of the mold by passing an alternating current through the induction coil, A method for processing the tip of a resin tube, in which the tip of the tube is molded along the shape of the inner bottom surface of the insertion portion, and then a cooling chiller is circulated through the cooling hole to close the tip of the tube, The deepest portion of the concave portion of the mold is located near the boundary between the inner bottom surface and the inner side surface of the insertion portion, and the distance measured vertically from the deepest portion of the concave portion of the mold to the inner side surface of the insertion portion is , From the peripheral edge of the concave portion of the mold to the inner surface of the insertion portion. It is characterized in that it is smaller than 1/2 of the distance measured directly, whereby the above object is achieved.
（作用） 金型の誘導加熱によって金型が自己発熱し、その内面
が短時間で加熱されるので、金型内に挿入されている樹
脂チューブが急速に加熱される。また、金型の凹部の最
深部が該挿入部の内底面と内側面との境界の近傍に位置
され、該金型の凹部の最深部から該挿入部の内側面まで
の垂直に測定される距離が、該金型の凹部の周縁部から
該挿入部の内側面までの垂直に測定される距離の1/2よ
り小さくされているので、樹脂チューブの先端部への熱
効率がよくなり、樹脂チューブの先端部が急速に加熱さ
れる。この種の作業では、チューブ加熱時間がサイクル
タイムの大部分を占めるので、上記の金型の誘導加熱に
よってチューブ加熱時間が短縮されることにより、生産
効率が著しく向上される。(Operation) Since the die self-heats due to induction heating of the die and the inner surface thereof is heated in a short time, the resin tube inserted in the die is rapidly heated. Further, the deepest part of the concave part of the mold is located near the boundary between the inner bottom surface and the inner side surface of the insertion part, and is measured vertically from the deepest part of the concave part of the mold to the inner side surface of the insertion part. Since the distance is less than 1/2 of the vertically measured distance from the peripheral edge of the concave portion of the mold to the inner surface of the insertion portion, the thermal efficiency to the tip of the resin tube is improved, and The tip of the tube heats up rapidly. In this kind of work, since the tube heating time occupies most of the cycle time, the tube heating time is shortened by the induction heating of the above-mentioned mold, so that the production efficiency is remarkably improved.
（実施例） 以下に本発明をその実施例に基づいて詳細に説明す
る。(Example) Below, this invention is demonstrated in detail based on the Example.
本発明の先端加工方法は、第１図に示す金型20を用い
て行うことができる。この金型20は種々の導電性金属材
料、例えば、鉄、ニッケル、ステンレス、銅、銅合金、
アルミニウム等の導電性金属材料からなり、樹脂チュー
ブ10の外周面に内側面21が略密着し得る内径を有し、内
底面22が半球形状となった挿入部23が設けられている。
この挿入部23の挿入方向に沿って、金型20の外周面に
は、その熱容量低減のために中央部が縮径された鼓形状
の凹部24が設けられている。金型20の凹部24の最深部25
は該挿入部23の内底面22と内側面21との境界211の近傍
に位置され、該金型20の凹部24の最深部25から該挿入部
23の内側面21までの垂直に測定される距離（第１図でａ
として表される距離）が、該金型20の凹部24の周縁部26
から該挿入部23の内側面21までの垂直に測定される距離
（第１図でｂとして表される距離）の1/2より小さくさ
れている。誘導コイル30は、この金型20の凹部24外周面
に巻回され、その両端部が電源40に接続されている。誘
導コイル30は、冷却用穴を有しており、具体的には、中
空体のケーブルにて形成され、その内部に冷却用チラー
を流通させるようになっている。The tip processing method of the present invention can be performed using the mold 20 shown in FIG. This mold 20 is made of various conductive metal materials such as iron, nickel, stainless steel, copper, copper alloy,
An insertion portion 23, which is made of a conductive metal material such as aluminum, has an inner diameter that allows the inner side surface 21 to be substantially in close contact with the outer peripheral surface of the resin tube 10, and has an inner bottom surface 22 having a hemispherical shape.
Along the outer peripheral surface of the mold 20, along the insertion direction of the insertion portion 23, there is provided a drum-shaped recess 24 having a central portion with a reduced diameter in order to reduce its heat capacity. The deepest part 25 of the recess 24 of the mold 20
Is located in the vicinity of the boundary 211 between the inner bottom surface 22 and the inner side surface 21 of the insertion part 23, and the insertion part is inserted from the deepest part 25 of the recess 24 of the mold 20.
Vertically measured distance to inner surface 21 of 23 (a in Fig. 1)
(Distance represented by) is the peripheral edge portion 26 of the concave portion 24 of the mold 20.
Is less than 1/2 of the vertically measured distance (distance represented as b in FIG. 1) from the inside to the inner side surface 21 of the insertion portion 23. The induction coil 30 is wound around the outer peripheral surface of the recess 24 of the mold 20, and both ends thereof are connected to the power source 40. The induction coil 30 has a hole for cooling, and is specifically formed by a hollow cable, and a cooling chiller is circulated inside the cable.
次に、上記金型20を用いて本発明の樹脂チューブの先
端加工方法を説明する。樹脂チューブ10の先端部を金型
20の挿入部23内に挿入し、樹脂チューブ10を挿入部23の
奥部側へ所定圧力で押し付けた状態で、電源40を作動さ
せる。電源40は、例えばサイリスタインバータを備えた
高周波電源を用いることができ、その出力および周波数
は、金型20を効率よく誘導加熱し得るように、金型20の
材質、形状ならびに誘導コイル30の構造等に基づいて決
定されるが、通常60Hz〜1600Hzの周波数を使用する。電
源40の作動により誘導コイル30に所定の交流が通じる
と、金型20が互番磁場中におかれることになる。これに
より金型20はうず電流損および磁気ヒステリシス損によ
り自己発熱し、瞬時に樹脂チューブ10の融点以上とな
る。その結果、金型20の挿入部23内で押圧されている樹
脂チューブ10の先端部は、第２図（ａ）（ｂ）に示すよ
うに、軟化溶融した状態で挿入部23内に押し込まれるた
めに、第２図（ｃ）に示すように、先端が挿入部23の内
底面22の形状に沿うよう変形し、先端開口部が閉塞され
て半球形状に成形される。Next, a method of processing the tip of the resin tube of the present invention using the mold 20 will be described. Mold the tip of the resin tube 10
The power supply 40 is operated in a state where the resin tube 10 is inserted into the insertion portion 23 of 20 and the resin tube 10 is pressed to the inner side of the insertion portion 23 with a predetermined pressure. As the power supply 40, for example, a high frequency power supply including a thyristor inverter can be used, and its output and frequency are such that the material and shape of the mold 20 and the structure of the induction coil 30 are such that the mold 20 can be efficiently induction-heated. Etc., but usually a frequency of 60 Hz to 1600 Hz is used. When a predetermined alternating current is applied to the induction coil 30 by the operation of the power supply 40, the mold 20 is placed in an alternating magnetic field. As a result, the mold 20 self-heats due to the eddy current loss and the magnetic hysteresis loss, and the melting point of the resin tube 10 is instantly exceeded. As a result, as shown in FIGS. 2A and 2B, the tip portion of the resin tube 10 pressed in the insertion portion 23 of the mold 20 is pushed into the insertion portion 23 in a softened and melted state. Therefore, as shown in FIG. 2C, the tip is deformed so as to follow the shape of the inner bottom surface 22 of the insertion portion 23, and the tip opening is closed to form a hemispherical shape.
樹脂チューブ10の先端が金型20内で所定形状まで成形
されると、誘導コイル30への通電を停止し、誘電コイル
30を形成するケーブル内に例えば５〜15℃程度の冷却用
チラーを流通させる。これにより金型20が冷却され、金
型20内に挿入されている上記樹脂チューブ10の先端部は
固化する。樹脂チューブ10の先端部が固化した後、これ
を金型20外へ抜き出し、ケーブル内へのチラー供給も停
止し、次の加工に備える。When the tip of the resin tube 10 is molded in the mold 20 to a predetermined shape, the induction coil 30 is de-energized and the induction coil 30
A cooling chiller at, for example, about 5 to 15 ° C. is circulated in the cable forming 30. As a result, the mold 20 is cooled, and the tip of the resin tube 10 inserted into the mold 20 is solidified. After the tip portion of the resin tube 10 has solidified, this is taken out of the mold 20 and the chiller supply to the inside of the cable is stopped to prepare for the next processing.
このような先端加工方法で樹脂チューブ10の先端部を
成形する場合には、金型20は誘導加熱によりその内面も
急速に加熱されるので、金型20内に挿入されている樹脂
チューブ10の先端部を極めて短時間で軟化溶融させて所
定形状に成形することができる。また、金型20の凹部24
の最深部25は樹脂チューブの挿入部23の内底面22と内側
面21との境界211の近傍に位置され、該金型20の凹部24
の最深部25から該挿入部23の内側面21までの垂直に測定
される距離が、該金型20の凹部24の周縁部26から該挿入
部23の内側面21までの垂直に測定される距離の1/2より
小さくされているので、樹脂チューブ10の先端部への熱
効率がよくなり、樹脂チューブ10の先端部が急速に加熱
される。この種の成形作業では、樹脂チューブ10の加熱
時間がサイクルタイムの多くを占めるので、この加熱時
間が短縮されることにより生産性を著しく向上すること
ができる。また、誘導コイル30を形成するケーブル内に
チラーを通じて金型20を冷却することにより誘導コイル
30が金型20の加熱と冷却に共用され、誘導コイル30自体
も小型であることとあいまって、装置を小型化すること
ができる。また、必要に応じて金型20と誘導コイル30の
両方にチラーを流通させることも可能である。When the tip portion of the resin tube 10 is molded by such a tip processing method, the inner surface of the mold 20 is rapidly heated by induction heating, so that the resin tube 10 inserted into the mold 20 is The tip can be softened and melted in an extremely short time to be molded into a predetermined shape. In addition, the recess 24 of the mold 20
The deepest part 25 is located near the boundary 211 between the inner bottom surface 22 and the inner side surface 21 of the insertion part 23 of the resin tube, and the recess 24 of the mold 20.
A vertically measured distance from the deepest part 25 of the insert 23 to the inner surface 21 of the insert 23 is measured vertically from the peripheral edge 26 of the recess 24 of the mold 20 to the inner surface 21 of the insert 23. Since the distance is smaller than 1/2 of the distance, the thermal efficiency to the tip of the resin tube 10 is improved, and the tip of the resin tube 10 is rapidly heated. In this type of molding operation, since the heating time of the resin tube 10 occupies most of the cycle time, the productivity can be remarkably improved by shortening the heating time. In addition, the induction coil is cooled by cooling the mold 20 through a chiller in the cable forming the induction coil 30.
The apparatus 30 can be downsized because 30 is commonly used for heating and cooling the mold 20 and the induction coil 30 itself is also small. Further, it is possible to circulate the chiller through both the mold 20 and the induction coil 30 if necessary.
本発明の先端加工方法は、カテーテルの先端加工に適
しているが、それ以外の医療用樹脂チューブの加工に適
用でき、更に医療用以外の樹脂チューブの加工にも適用
可能である。The tip processing method of the present invention is suitable for tip processing of a catheter, but can be applied to processing of other medical resin tubes, and can also be applied to processing of non-medical resin tubes.
（発明の効果） 本発明の樹脂チューブの先端加工方法は、このように
樹脂チューブ先端部を閉塞する加熱成形において、誘導
加熱により瞬時に金型を加熱することができ、また、金
型の凹部の最深部は樹脂チューブの挿入部の内底面と内
側面との境界の近傍に位置され、該金型の凹部の最深部
から該挿入部の内側面までの垂直に測定される距離が、
該金型の凹部の周縁部から該挿入部の内側面までの垂直
に測定される距離の1/2より小さくされているので、樹
脂チューブの先端部への熱効率がよくなり、樹脂チュー
ブの先端部が急速に加熱され、チューブの加熱時間を短
縮できて、生産効率を著しく向上させることができる。(Effect of the Invention) In the method for processing the tip of the resin tube of the present invention, in the heat molding for closing the tip of the resin tube in this manner, the die can be instantly heated by induction heating, and the concave portion of the die can be used. The deepest part of is located near the boundary between the inner bottom surface and the inner side surface of the insertion part of the resin tube, the distance measured vertically from the deepest part of the concave part of the mold to the inner side surface of the insertion part,
Since it is smaller than 1/2 of the vertically measured distance from the peripheral edge of the concave part of the mold to the inner surface of the insertion part, the thermal efficiency to the tip of the resin tube is improved and the tip of the resin tube is improved. The part is heated rapidly, the heating time of the tube can be shortened, and the production efficiency can be significantly improved.
第１図は本発明の先端加工方法の一実施例を示す模式
図、第２図（ａ）〜（ｃ）はその工程を細分して示した
説明図、第３図は体内挿入カテーテルの先端部を示す拡
大斜視図である。 10……樹脂チューブ、20……金型、21……内側面、22…
…内底面、23……挿入部、24……凹部、25……最深部、
26……周縁部、30……誘導コイル、40……電源、211…
…内底面と内側面との境界。FIG. 1 is a schematic diagram showing an embodiment of the distal end processing method of the present invention, FIGS. 2 (a) to 2 (c) are explanatory views showing the steps subdivided, and FIG. 3 is the distal end of a body insertion catheter. It is an expansion perspective view which shows a part. 10 …… Resin tube, 20 …… Mold, 21 …… Inside surface, 22…
… Inner bottom, 23 …… insertion part, 24 …… recessed part, 25 …… deepest part,
26 ... peripheral part, 30 ... induction coil, 40 ... power supply, 211 ...
… The boundary between the inner bottom surface and the inner side surface.
───────────────────────────────────────────────────── フロントページの続き 審判の合議体 審判長 安達 和子 審判官 小林 正巳 審判官 小林 均 (56)参考文献 特開 昭57−69861（ＪＰ，Ａ) 特開 昭60−212172（ＪＰ，Ａ) 特開 昭50−146676（ＪＰ，Ａ) 特開 昭63−309408（ＪＰ，Ａ) 特開 昭63−67121（ＪＰ，Ａ) 特開 昭63−139721（ＪＰ，Ａ) ─────────────────────────────────────────────────── --Continued from the front page Judgment panel for referees Kazuko Adachi Judge Judge Masami Kobayashi Judge Hitoshi Kobayashi (56) References JP 57-69861 (JP, A) JP 60-212172 (JP, A) JP-A-50-146676 (JP, A) JP-A-63-309408 (JP, A) JP-A-63-67121 (JP, A) JP-A-63-139721 (JP, A)
Claims (1)
の挿入部が設けられ、かつ外周面に凹部が設けられた金
型に、該挿入部を囲むよう冷却用穴を有する誘導コイル
が巻回された金型を使用し、この金型の挿入部内に樹脂
チューブを挿入し、誘導コイルに交流を通じて金型を誘
導加熱することにより、樹脂チューブの先端部を挿入部
の内底面の形状に沿って成形し、次いで、該冷却用穴に
冷却用チラーを流通させて該チューブの先端を閉塞する
樹脂チューブの先端加工方法であって、該金型の凹部の
最深部が該挿入部の内底面と内側面との境界の近傍に位
置され、該金型の凹部の最深部から該挿入部の内側面ま
での垂直に測定される距離が、該金型の凹部の周縁部か
ら該挿入部の内側面までの垂直に測定される距離の1/2
より小さくされていることを特徴とする樹脂チューブの
先端加工方法。1. An induction coil having a cooling hole so as to surround the insertion part is provided in a mold having an inner bottom surface formed in a hemispherical shape and provided with a resin tube insertion part and an outer peripheral surface provided with a recess. Using a wound mold, insert a resin tube into the insertion part of this mold, and induction heat the mold by passing an alternating current through an induction coil to shape the tip of the resin tube into the shape of the inner bottom surface of the insertion part. A method for processing the tip of a resin tube in which a cooling chiller is circulated through the cooling hole to close the tip of the tube, and the deepest part of the concave portion of the mold is The distance, which is located near the boundary between the inner bottom surface and the inner side surface and is measured vertically from the deepest part of the concave part of the mold to the inner side surface of the insertion part, is the distance from the peripheral part of the concave part of the mold to the insertion part. 1/2 of the distance measured vertically to the inside surface of the part
A method for processing the tip of a resin tube, which is characterized by being made smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1604689A JPH0822570B2 (en) | 1989-01-24 | 1989-01-24 | Resin tube tip processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1604689A JPH0822570B2 (en) | 1989-01-24 | 1989-01-24 | Resin tube tip processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02194925A JPH02194925A (en) | 1990-08-01 |
| JPH0822570B2 true JPH0822570B2 (en) | 1996-03-06 |
Family
ID=11905634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1604689A Expired - Fee Related JPH0822570B2 (en) | 1989-01-24 | 1989-01-24 | Resin tube tip processing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0822570B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2793187B1 (en) * | 1999-05-06 | 2001-06-22 | Bernard Holliger | DENTAL MIRROR AND METHOD AND DEVICE FOR MANUFACTURING HAND TOOLS SUCH AS A DENTAL MIRROR |
| KR100827455B1 (en) * | 2004-05-24 | 2008-05-07 | (주)지앤티비 | Edge bonding device and edge bonded cardboard of plastic cardboard |
| FR2893877B1 (en) * | 2005-11-30 | 2009-10-09 | Roctool Soc Par Actions Simplifee | METHOD FOR MANUFACTURING PIPE OR TUBE RING |
| JP2008215931A (en) * | 2007-03-01 | 2008-09-18 | Canon Inc | Liquid sample dispensing apparatus and biochemical reaction apparatus equipped with liquid sample dispensing apparatus |
| WO2013126538A1 (en) * | 2012-02-23 | 2013-08-29 | Hollister Incorporated | Method and apparatus for imparting a catheter tip to multi-layered tubing |
| JP7145705B2 (en) * | 2018-09-13 | 2022-10-03 | オリンパス株式会社 | Catheter manufacturing method |
| CN109648837A (en) * | 2018-12-28 | 2019-04-19 | 天津军星管业集团有限公司 | A kind of steel-plastic composite pressure pipe Full-automatic chamfering sealing device enclosed mechanism |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50146676A (en) * | 1974-05-16 | 1975-11-25 | ||
| JPS609825B2 (en) * | 1980-10-20 | 1985-03-13 | テルモ株式会社 | Catheter manufacturing method |
| US4551292A (en) * | 1984-04-05 | 1985-11-05 | Angiomedics, Inc. | Method for making a catheter with a soft, deformable tip |
| JPS6367121A (en) * | 1986-09-09 | 1988-03-25 | Hitachi Ltd | Compression molding equipment |
| JPS63139721A (en) * | 1986-12-02 | 1988-06-11 | Alps Electric Co Ltd | Dielectric heating type plastic molding die |
| JPS63309408A (en) * | 1987-06-12 | 1988-12-16 | Inoue Japax Res Inc | Mold device for hot forming |
-
1989
- 1989-01-24 JP JP1604689A patent/JPH0822570B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02194925A (en) | 1990-08-01 |
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