JPH0732037A - Production of flexible pipe for endoscope - Google Patents
Production of flexible pipe for endoscopeInfo
- Publication number
- JPH0732037A JPH0732037A JP5179102A JP17910293A JPH0732037A JP H0732037 A JPH0732037 A JP H0732037A JP 5179102 A JP5179102 A JP 5179102A JP 17910293 A JP17910293 A JP 17910293A JP H0732037 A JPH0732037 A JP H0732037A
- Authority
- JP
- Japan
- Prior art keywords
- flexible tube
- core member
- flexible pipe
- tube
- endoscope
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 15
- 239000013013 elastic material Substances 0.000 claims abstract description 7
- 230000001788 irregular Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 description 23
- 238000010438 heat treatment Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内視鏡に用いる可撓管
の製造方法に係り、特に、断面形状が異形状（非円形）
の内視鏡用可撓管の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a flexible tube used for an endoscope, and more particularly, a cross-sectional shape is irregular (non-circular).
To a method for manufacturing a flexible tube for an endoscope.
【０００２】[0002]
【従来の技術】従来、この種の内視鏡用可撓管の製造方
法として、特公平４−２０３４２号公報に示される内容
のものがある。これは、螺旋管、及びその外周に被覆さ
れる網状の管状体で構成される管状の物の中に、不燃性
材料よりなる溝付の芯金を、可燃性材料よりなる薄肉管
状体をその間に挟んだ状態で挿通し、この状態で雄型を
押し付けるプレス加工処理を行った後、可燃性材料より
なる薄肉管状体を加熱して燃焼させ、この後に芯金を抜
去し、最後に外周に樹脂を被覆する。2. Description of the Related Art Conventionally, as a method of manufacturing a flexible tube for an endoscope of this type, there is one disclosed in Japanese Patent Publication No. 4-20342. This consists of a spiral tube and a tubular object consisting of a net-like tubular body that is coated on the outer periphery of the core tube with a groove made of an incombustible material, and a thin tubular body made of a combustible material between them. Inserted in a state of being sandwiched between, and after performing a pressing process of pressing the male mold in this state, a thin tubular body made of a flammable material is heated and burned, after which the core metal is removed, and finally the outer circumference Coat with resin.
【０００３】また、特開平１−２５８８１４号公報に
は、芯金を２つに分割し、その２つに分割された間にス
ペ―サを挟んで可撓管内に挿通して、前記同様のプレス
加工処理を行ない、最後に、スペ―サを抜去してから、
芯金を抜き取ることが示されている。Further, in Japanese Unexamined Patent Publication No. 1-258814, a cored bar is divided into two parts, and a spacer is sandwiched between the two parts to insert the cored bar into the flexible tube. Perform press processing, and finally remove the spacer,
It is shown to pull out the core metal.
【０００４】[0004]
【発明が解決しようとする課題】前述した従来技術にお
いては、螺旋管、及び網状の管状体を所定形状にプレス
成形を行う前に、その中に挿通する可燃性部材を配設し
なければならないこと、加えて、プレス加工後、可燃性
部材を燃焼させるために、その燃焼温度まで加熱させな
ければならないこと、さらに加えて、異形状に成形され
た後に樹脂を押し出し成型等によって被覆させるには異
形状であるために全周にわたって均一な厚さに樹脂を被
覆させることが困難であるという、製造上の種々の問題
が生じる。In the above-mentioned prior art, a flammable member to be inserted through the spiral tube and the net-like tubular body must be disposed before press-forming the tubular body into a predetermined shape. In addition, after pressing, in order to burn the combustible member, it must be heated to the combustion temperature, and in addition, in order to coat the resin by extrusion molding etc. after being molded into a different shape. Due to the irregular shape, it is difficult to coat the resin with a uniform thickness over the entire circumference, which causes various manufacturing problems.
【０００５】本発明は前記課題に着目してなされたもの
であり、余分な手間をかけることなく可撓管のプレス加
工を行ない、かつ均一な厚さの樹脂被覆が得られること
によって製造工程の簡略化と安定した品質の可撓管が得
られることを目的とする。The present invention has been made in view of the above-mentioned problems, and the flexible tube is pressed without extra labor, and a resin coating having a uniform thickness can be obtained. The purpose is to obtain a flexible tube with simplification and stable quality.
【０００６】[0006]
【課題を解決する手段および作用】本発明は、断面形状
がほぼ円形状に形成された螺旋管に網状に編まれた管状
の部材を被せ、さらに、その部材の外周に弾性を有する
樹脂を被覆した構成からなる可撓管の素材の中に、弾性
材からなる芯部材を挿通した状態で、前記芯部材が挿通
された可撓管の素材をプレス加工することによって、所
定の異形の断面形状の可撓管に形成する内視鏡用可撓管
の製造方法である。この方法によれば、余分な手間をか
けることなく可撓管の異形状への加工が行なえ、かつ、
均一な厚さの樹脂被覆が容易に得られることによって製
造工程の簡略化と安定した品質の可撓管を提供できる。According to the present invention, a spiral tube having a substantially circular cross section is covered with a tubular member knitted in a net shape, and the outer circumference of the member is coated with an elastic resin. With the core member made of an elastic material inserted in the material of the flexible tube having the above-mentioned configuration, the flexible tube material having the core member inserted therein is pressed to obtain a predetermined irregular cross-sectional shape. Is a method of manufacturing a flexible tube for an endoscope, which is formed on the flexible tube. According to this method, the flexible tube can be processed into a different shape without extra labor, and
Since the resin coating having a uniform thickness can be easily obtained, the manufacturing process can be simplified and a flexible tube having stable quality can be provided.
【０００７】[0007]
【実施例】本発明の第１の実施例につき、図１〜図６を
参照にして以下に説明する。内視鏡用可撓管は次の手順
で形成される。まず、帯状の金属板を一定の径で螺旋状
に巻き、螺旋管４を形成する。そして、金属線を網状に
編み込んで管状に形成した網状管５を、その螺旋管４の
外周に被せる。この長さは、使用する内視鏡の挿入部に
おける可撓管に対応する長さとする。この管状体の端部
において、前記螺旋管４と前記網状管５とははんだ付け
等により固定される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A first embodiment of the present invention will be described below with reference to FIGS. The flexible tube for an endoscope is formed by the following procedure. First, a strip-shaped metal plate is spirally wound with a constant diameter to form the spiral tube 4. Then, the outer circumference of the spiral tube 4 is covered with the mesh tube 5 which is formed by weaving a metal wire in a mesh shape into a tubular shape. This length is a length corresponding to the flexible tube in the insertion portion of the endoscope to be used. At the end of this tubular body, the spiral tube 4 and the mesh tube 5 are fixed by soldering or the like.
【０００８】ついで、このような管状体を押出し成型機
にて、前記網状管５の外周に、溶融した樹脂６を被覆し
て素材としての可撓管１を作る。この際、管状体は断面
が丸形であるため、樹脂６の被覆は均一になる。Then, such a tubular body is extruded by a molding machine to coat the molten resin 6 on the outer periphery of the mesh tube 5 to form the flexible tube 1 as a raw material. At this time, since the tubular body has a round cross section, the resin 6 is uniformly coated.
【０００９】このように作られた素材としての可撓管１
の中に、図１で示すように芯部材２を挿通する。弾性材
としては、例えばシリコンゴム等の柔軟なエラストマ―
が好ましい。その他の材料として、ポリウレタンやポリ
エチレン、あるいは塩化ビニル等も、考えられる。A flexible tube 1 as a material made in this way
As shown in FIG. 1, the core member 2 is inserted therein. As the elastic material, for example, a flexible elastomer such as silicone rubber is used.
Is preferred. Other materials such as polyurethane, polyethylene or vinyl chloride are also conceivable.
【００１０】芯部材２の外径は、前記丸形の可撓管１の
内径より、５〜１５％細いものが望ましく、特に１０％
位細いものがより望ましい。この芯部材２は断面形状は
円形であることから、素材としての可撓管１に容易に挿
通することが可能である。The outer diameter of the core member 2 is preferably 5 to 15% smaller than the inner diameter of the round flexible tube 1, and particularly 10%.
Finer things are more desirable. Since the core member 2 has a circular cross-sectional shape, it can be easily inserted into the flexible tube 1 as a material.
【００１１】そして、図２および図３で示すように、こ
の芯部材２が挿通された可撓管１を、この可撓管１の長
さ以上を有した、半円状の断面形状の溝を有した型３に
設置する。図３に示すように、型３の溝の形状は半円状
となっているが、その曲率半径は可撓管１の外径の曲率
より大きいものとなっており、かつ溝の深さは前記可撓
管１の外径より小さい寸法となっている。As shown in FIGS. 2 and 3, the flexible tube 1 having the core member 2 inserted therein has a groove having a semicircular cross section having a length equal to or greater than the length of the flexible tube 1. It is installed in the mold 3 having. As shown in FIG. 3, the groove of the mold 3 has a semicircular shape, but its radius of curvature is larger than the curvature of the outer diameter of the flexible tube 1, and the groove has a depth. The size is smaller than the outer diameter of the flexible tube 1.
【００１２】次に、この型３に設置された可撓管１を所
定の異形状（ここではＤの字形）にプレス加工する方法
を述べる。すなわち、図４で示すように、型３は、図４
で示すように、例えば後述するようにベルト９によって
型３の長手方向、つまり、可撓管１の長手方向へ所定の
速度で搬送されるが、その型３の、可撓管１が配設され
る側には複数のロ―ラ８ａが設けられており、ベルト９
の裏面側には前記ロ―ラ８ａに対向する複数のロ―ラ８
ｂが設けられている。そして、型３の溝に設置された可
撓管１は、搬送される際に複数のロ―ラ８ａによって所
定の圧力で押圧される。Next, a method of pressing the flexible tube 1 installed in the mold 3 into a predetermined different shape (here, D-shape) will be described. That is, as shown in FIG.
As shown in, the belt 9 conveys the flexible tube 1 in the longitudinal direction of the mold 3, that is, the longitudinal direction of the flexible tube 1 at a predetermined speed, as will be described later. A plurality of rollers 8a are provided on the side where the belt 9
A plurality of rollers 8 facing the rollers 8a on the back side of the
b is provided. The flexible tube 1 installed in the groove of the mold 3 is pressed by the plurality of rollers 8a at a predetermined pressure when being conveyed.
【００１３】各ロ―ラ８ａ，８ｂは各々回動自在になっ
ていることから、ベルト９による型３の送りによって各
ロ―ラ８ａ，８ｂは型３および可撓管１を押圧しながら
回転する。このとき、上側のロ―ラ８ａの押圧により、
可撓管１は型３の上面から突き出す部分が、図５で示す
ように押し潰されるように変形し、その図５で示すよう
にロ―ラ８ａが押し当たる型３の上面と同一面になる平
面を有するような断面形状がＤの字状となり、可撓管７
の形が完成する。Since each roller 8a, 8b is rotatable, each roller 8a, 8b is rotated while pressing the mold 3 and the flexible tube 1 by feeding the mold 3 by the belt 9. To do. At this time, by pressing the upper roller 8a,
The flexible tube 1 is deformed so that the portion protruding from the upper surface of the mold 3 is crushed as shown in FIG. 5, and as shown in FIG. 5, it is flush with the upper surface of the mold 3 against which the roller 8a is pressed. The cross section of the flexible tube 7 has a flat surface
Shape is completed.
【００１４】このとき、弾性のある芯部材２は最初、円
形の断面形状を有しており、その断面は点対称な形状を
しているので、可撓管１の潰し方向と芯部材２の向きを
合わせる必要がない。At this time, the elastic core member 2 initially has a circular cross-sectional shape, and since the cross-section has a point-symmetrical shape, the crushing direction of the flexible tube 1 and the core member 2 are different. There is no need to match the orientation.
【００１５】なお、プレスするに当たって素材としての
可撓管１にその全長にわたり複数個のロ―ラ８ａが全部
押圧するように型３の送りは可撓管１の形成する先端部
が、送り方向の最後列のロ―ラ８ａから押圧を受け始
め、最後に可撓管１の送り方向における後端部が送り方
向の最前列のロ―ラ８ａに押圧されるまで連続的に行わ
れる。このように複数のロ―ラ８ａでプレス成形するこ
とにより、完成したときの可撓管７の保形性が向上す
る。When pressing, the tip of the flexible tube 1 is formed so that the tip of the flexible tube 1 is formed so that the plurality of rollers 8a press the flexible tube 1 as a raw material over its entire length. The pressing is started from the roller 8a in the last row, and is continuously performed until the rear end of the flexible tube 1 in the feeding direction is pressed by the roller 8a in the front row in the feeding direction. By press-forming with the plurality of rollers 8a, the shape retention of the flexible tube 7 when completed is improved.
【００１６】プレス形成された可撓管７内には芯部材２
が図５で示すように変形した形状で延在されており、そ
こで、プレス成形後、型３から可撓管７を取り外すと共
に芯部材２を引き抜く。芯部材２は先述したように柔軟
な弾性材であることから引き抜く力によって伸ばされ、
そのため、外径が細くなるため、可撓管７内から容易に
抜去することができる。The core member 2 is provided in the press-formed flexible tube 7.
5 extends in a deformed shape as shown in FIG. 5, and after press molding, the flexible tube 7 is removed from the mold 3 and the core member 2 is pulled out. Since the core member 2 is a flexible elastic material as described above, it is stretched by the pulling force,
Therefore, since the outer diameter is reduced, it can be easily removed from the flexible tube 7.
【００１７】なお、芯部材２を可撓管１内に挿通させる
ことなしにプレス成形を行なうと、図１５で示すように
成形された可撓管７の内側に位置する螺旋管４が内側に
反り返える変形が生じてしまい、この場合には、可撓管
７の所定の内腔を確保できなくなる。If press molding is performed without inserting the core member 2 into the flexible tube 1, the spiral tube 4 located inside the flexible tube 7 formed as shown in FIG. A warp-like deformation occurs, and in this case, it becomes impossible to secure a predetermined inner cavity of the flexible tube 7.
【００１８】つまり、芯部材２の作用は、素材としての
可撓管１をロ―ラ８ａによりプレス成形する際、ロ―ラ
８ａの押圧により形成される平面部の内側の螺旋管４を
内側から押さえ、螺旋管４を内側に反り返ることなく所
定の平面形状を形成させる。That is, the function of the core member 2 is that when the flexible tube 1 as a raw material is press-molded by the roller 8a, the spiral tube 4 inside the flat portion formed by pressing the roller 8a From above, the spiral tube 4 is formed into a predetermined planar shape without being warped inward.
【００１９】このように可撓管７の内側から螺旋管４を
押さえることからロ―ラ８ａの押圧力と、芯部材２の変
形に伴う反力とのバランスが成型性に影響することとな
るが、この芯部材２の変形反力は本実施例に示す中実な
円形断面形状に限ることなく、図７の（ａ）〜（ｆ）に
示す様々な形状で工夫することで最適な形成を確保する
ことができる。Since the spiral tube 4 is pressed from the inside of the flexible tube 7 as described above, the balance between the pressing force of the roller 8a and the reaction force due to the deformation of the core member 2 affects the moldability. However, the deformation reaction force of the core member 2 is not limited to the solid circular cross-sectional shape shown in this embodiment, but various shapes shown in (a) to (f) of FIG. Can be secured.
【００２０】図７（ａ）は、弾性材からなり中心に円形
の内腔が設けられている芯部材２ａを用いる例である。
図７（ｂ）は、その内腔の形状が円形ではなく異形状と
なっている芯部材２ｂの例である。図７（ｃ）は、多孔
の内腔を持つ断面形状の芯部材２ｃを用いる例である。
これらは各々プレス成形時にはそれぞれの内腔が潰され
るまでは変形反力が小さく潰れた後、つまり、素材とし
ての可撓管１の平面が形成されてからは芯部材２から変
形反力が大きくなり、螺旋管４の反り返りを防ぐ作用を
高める。FIG. 7 (a) shows an example in which a core member 2a made of an elastic material and having a circular inner cavity at its center is used.
FIG. 7B is an example of the core member 2b whose inner cavity has an irregular shape instead of a circular shape. FIG. 7C is an example in which a core member 2c having a cross-sectional shape having a porous lumen is used.
During press-molding, the deformation reaction force is small until the respective inner cavities are crushed, and after the flat surface of the flexible tube 1 as a material is formed, the deformation reaction force is large from the core member 2. Therefore, the action of preventing the spiral tube 4 from warping is enhanced.
【００２１】また、図７（ｄ）は、弾性材が多孔質とな
っている芯部材２ｄを用いる例であり、これも前記内腔
を形成するものと同じく、螺旋管４の反り返りを防ぐ作
用をする。Further, FIG. 7 (d) shows an example of using a core member 2d in which the elastic material is porous, and this also acts to prevent the spiral tube 4 from curling, as in the case of forming the lumen. do.
【００２２】図７（ｅ）は、芯部材２ｅが金属材料から
なっており、プレス形成時、適当な反力を起こしながら
も、芯部材２ｅは可撓管の変形に伴って塑性変形を起こ
していき、成形後、その可撓管１の成形形状に合った形
で引き抜くようにするものである。In FIG. 7 (e), the core member 2e is made of a metal material, and the core member 2e is plastically deformed by the deformation of the flexible tube while generating an appropriate reaction force during press forming. After the molding, the flexible tube 1 is pulled out in a shape suitable for the molding shape.
【００２３】図７（ｆ）は、可撓管１内に細径の芯部材
２ｆを多数、束ねた状態で挿通しておき形成に伴って可
撓管１内で芯部材２ｆが移動し、また所定の形状まで変
形がなされ、それ以上の力がかかった場合には、可撓管
７の内腔面積が小さくならないよう芯部材２ｆが反力を
生じるようにしたものである。また、プレス成形時には
上記の他の様々な工夫が考えられる。In FIG. 7 (f), a large number of thin core members 2f are inserted into the flexible tube 1 in a bundled state, and the core member 2f moves in the flexible tube 1 as it is formed. Also, when the core member 2f is deformed to a predetermined shape and a force larger than that is applied, the core member 2f generates a reaction force so that the area of the inner cavity of the flexible tube 7 is not reduced. In addition, various other contrivances can be considered during press molding.
【００２４】図８に示すものはそのプレス成形機械の例
であって、ベルト９で搬送される型３、および丸形の素
材としての可撓管１に、複数のロ―ラ８ａ…，８ｂ…が
転接して押し当てられることになるが、各ロ―ラ８ａ
…，８ｂ…の押圧力を、押圧開始側から順にＰ1 〜Ｐ5
とし、Ｐ1 からＰ5 にかけて連続的に圧力値が増加して
いくように調整される工夫がなされる。FIG. 8 shows an example of the press forming machine, in which a plurality of rollers 8a ..., 8b are attached to a mold 3 conveyed by a belt 9 and a flexible tube 1 as a round material. ... will be pressed against each other, but each roller 8a
, 8b ... are pressed in order from the pressing start side to P 1 to P 5
Then, the device is adjusted so that the pressure value continuously increases from P 1 to P 5 .
【００２５】このことで、素材としての可撓管１は、狙
いとする所定の異形状に一度に成型されるのではなく段
階的に徐々に変形されていくことから、変形の戻り（ス
プリングバック）や内側への反り返り等を防止でき、ま
た、完成品の形状の精度も高まる。As a result, the flexible tube 1 as a material is not molded at once into the desired predetermined irregular shape but is gradually deformed stepwise, so that the deformation returns (spring back). ) And inward warping can be prevented, and the accuracy of the shape of the finished product is improved.
【００２６】また、この工夫については、押圧力を変化
させることに限らず、ロ―ラ８ａ…，８ｂ…の位置を各
々変化させたり、あるいはロ―ラ８ａ…，８ｂ…の外径
を変化させることでも、可撓管１に対する変形量を徐々
に増加し、上記同様の効果を達成できる。This device is not limited to changing the pressing force, but the positions of the rollers 8a ..., 8b ... Are changed, or the outer diameters of the rollers 8a. By doing so, the amount of deformation with respect to the flexible tube 1 can be gradually increased, and the same effect as described above can be achieved.
【００２７】また、本発明においてはプレス成形する可
撓管１は既に樹脂６を被覆させたものであるが、図９に
示すように、プレスを行なう直前に可撓管１を加熱装置
（手段）１０の中に通して可撓管１の樹脂６がその素材
の融点以下の軟化温度まで加熱されてからプレスされる
という工程を設けると望ましい。このことによって成形
後、樹脂６の丸形に戻ろうとする弾性力を除去すること
ができ、よって、プレス成形後の樹脂６の網状管５、あ
るいは螺旋管４からの浮きを防止することが可能とな
る。In the present invention, the flexible tube 1 to be press-molded is already coated with the resin 6, but as shown in FIG. 9, the flexible tube 1 is heated by a heating device (means) immediately before pressing. ) 10 and the resin 6 of the flexible tube 1 is heated to a softening temperature not higher than the melting point of the material and then pressed. As a result, it is possible to remove the elastic force of the resin 6 that tends to return to the round shape after molding, and thus it is possible to prevent the resin 6 after press molding from floating from the mesh tube 5 or the spiral tube 4. Becomes
【００２８】なお、加熱装置１０としては、図１０で示
すように加熱炉と併設される大形のドラム１１に素材と
しての可撓管１を巻き付け、そこで、加熱処理されると
共にドラム１１の回転に従ってプレス成型機に送られる
構成が考えられる。また、加熱装置１０はプレス成型機
の直前工程に設けられるものに限らずロ―ラ８ａ，８ｂ
あるいは型３に加熱手段を組み込み、プレス成形と同時
に加熱を行なうものでもよいし、またプレス成形直後に
加熱しても同様の効果が得られることが考えられる。As the heating device 10, as shown in FIG. 10, the flexible tube 1 as a raw material is wound around a large drum 11 provided with a heating furnace, and the drum 11 is heated and rotated at the same time. It is conceivable that the structure is sent to a press molding machine according to the above. The heating device 10 is not limited to the one provided immediately before the press molding machine, but may be the rollers 8a and 8b.
Alternatively, a heating means may be incorporated in the mold 3 to perform heating at the same time as press molding, or it is considered that the same effect can be obtained by heating immediately after press molding.
【００２９】また、加熱手段１０と共に冷却手段（図示
せず、例えば送気あるいは送水や液体に浸漬する等）を
加熱形成の直後に設けることも、形成性の向上や次の組
立や加工の工程をしやすくする等の効果が得られ有効で
ある。Further, the cooling means (not shown, for example, air supply or water supply or immersion in a liquid) may be provided immediately after the heating and forming together with the heating means 10 to improve the formability and the next assembly or processing step. It is effective because it has the effect of facilitating
【００３０】また、プレス成形の方法としては、図１１
に示すように複数の成形用溝を並設した型３ａに複数の
丸形可撓管１を設置し、その上を可撓管１の長さと同じ
もしくはそれ以上の長さを有するロ―ラ８ａが、可撓管
１の長軸と直角方向に回転移動しながらプレスしてい
き、複数本の可撓管１の成形を一度に行なうことも考え
られる。このことによって一度に多数の加工が可能とな
り、大量生産を前提とした場合生産性を向上させること
が可能となる。Further, as a press molding method, FIG.
As shown in FIG. 3, a plurality of round flexible tubes 1 are installed in a mold 3a having a plurality of molding grooves arranged side by side, and a roller having a length equal to or longer than the length of the flexible tubes 1 is placed thereon. It is also conceivable that 8a presses while rotating and moving in the direction perpendicular to the long axis of the flexible tubes 1 to form a plurality of flexible tubes 1 at one time. As a result, a large number of processes can be performed at once, and productivity can be improved when mass production is assumed.
【００３１】当然ながら、このように複数の可撓管１を
一度に成形加工することは先述の実施例と同じ方式で図
１２に示すように、複数並設した可撓管１をその長軸方
向に送り、その送り方向と直交に設けられたロ―ラ８ａ
が複数本同時に形成していくことで、同様の効果を得る
ことも考えられる。As a matter of course, forming a plurality of flexible tubes 1 at a time in this manner is performed in the same manner as in the above-mentioned embodiment, as shown in FIG. The roller 8a that is fed in the direction
It is also possible to obtain the same effect by forming a plurality of layers simultaneously.
【００３２】また、他の実施例として、図１３で示すよ
うな、内視鏡の可撓管１の手元側に丸形の接続口金１２
を接続したものにあって、その手元側近傍部分だけ、変
形形成させないで、断面を丸形に残す場合には、図１４
に示すように型３の端部における溝深さが深くなるよう
連続的に変化させ、溝底面が傾斜した溝部１３を形成し
た型３に可撓管１の口金１２の接続部が前記傾斜した溝
部１３に配設されるよう設置してプレス成型を行なうと
よい。Further, as another embodiment, as shown in FIG. 13, a round connection mouthpiece 12 is provided on the proximal side of the flexible tube 1 of the endoscope.
In the case where the cross section is left round without deforming and forming only the portion near the proximal side in FIG.
As shown in FIG. 3, the groove depth at the end of the die 3 is continuously changed to be deep, and the connecting portion of the mouthpiece 12 of the flexible tube 1 is inclined to the die 3 in which the groove portion 13 having the groove bottom surface is formed. It may be installed so as to be disposed in the groove portion 13 and press-molded.
【００３３】これによれば、プレス成形によって可撓管
１の型３から突出した部分は潰され形成されるが傾斜し
た溝部１３にある可撓管部分は溝から突出していないた
め変形しないで丸形の断面が残ることになる。According to this, the portion of the flexible tube 1 projecting from the mold 3 is crushed and formed by press molding, but the flexible tube portion in the slanted groove portion 13 does not project from the groove and is not deformed. The cross section of the shape will remain.
【００３４】なお、本発明は内視鏡の挿入部用可撓管、
ライトガイドケーブル用可撓管、内蔵部材用可撓管等、
各種の可撓管の製造方法に適用できるものである。ま
た、その異形の種類としても、前述した形状に限らず、
例えば一部へこんだ形状等、種々のものであっても、同
様に適用できる。The present invention is a flexible tube for an insertion portion of an endoscope,
Flexible tubes for light guide cables, flexible tubes for built-in members, etc.
It can be applied to various flexible tube manufacturing methods. Also, the types of the different shapes are not limited to the shapes described above,
For example, various shapes such as a partially depressed shape can be similarly applied.
【００３５】[0035]
【発明の効果】以上説明したように本発明の製法によれ
ば、余分な手間をかけることなく可撓管の異形状への成
形が容易に行なえ、かつ均一な厚さの樹脂被覆が得られ
ることによって製造工程の簡略化と安定した品質の内視
鏡用可撓管が得られる。As described above, according to the manufacturing method of the present invention, the flexible tube can be easily formed into a different shape without extra labor, and a resin coating having a uniform thickness can be obtained. As a result, a flexible tube for an endoscope having a simplified manufacturing process and stable quality can be obtained.
【００３６】また、このように作られた可撓管を組み込
んだ内視鏡に、チャンネル管路等を備えた使いすて方式
の内視鏡カバ―を組み合わせて使用することによって、
洗浄等の手間のかからない内視鏡装置を提供することが
可能となる。Further, by using the endoscope incorporating the flexible tube thus manufactured and the endoscope cover of the use system having a channel conduit etc. in combination,
It is possible to provide an endoscope apparatus that does not require labor such as cleaning.
【図１】内視鏡用可撓管を製造する一手順の状態を示す
斜視図。FIG. 1 is a perspective view showing a state of one procedure for manufacturing a flexible tube for an endoscope.
【図２】内視鏡用可撓管を製造する一手順の状態を示す
斜視図。FIG. 2 is a perspective view showing a state of one procedure for manufacturing a flexible tube for an endoscope.
【図３】内視鏡用可撓管を製造する一手順の状態の断面
図。FIG. 3 is a sectional view of a state of one procedure for manufacturing a flexible tube for an endoscope.
【図４】内視鏡用可撓管を製造する一手順の状態を示す
斜視図。FIG. 4 is a perspective view showing a state of one procedure for manufacturing a flexible tube for an endoscope.
【図５】内視鏡用可撓管を製造する一手順の状態の断面
図。FIG. 5 is a sectional view showing a state of one procedure for manufacturing a flexible tube for an endoscope.
【図６】完成した内視鏡用可撓管の斜視図。FIG. 6 is a perspective view of the completed flexible tube for an endoscope.
【図７】種々の芯部材をそれぞれ可撓管の中に挿通した
ものの断面図。FIG. 7 is a cross-sectional view of various core members inserted into a flexible tube.
【図８】プレス成形機械の一例の説明図。FIG. 8 is an explanatory view of an example of a press molding machine.
【図９】プレス成形機械の他の例の斜視図。FIG. 9 is a perspective view of another example of the press molding machine.
【図１０】素材としての可撓管を加熱する加熱手段を組
み込んだ繰出し装置の斜視図。FIG. 10 is a perspective view of a feeding device incorporating a heating means for heating a flexible tube as a material.
【図１１】プレス成形機械のさらに他の例の斜視図。FIG. 11 is a perspective view of still another example of the press molding machine.
【図１２】プレス成形機械のさらに他の例の斜視図。FIG. 12 is a perspective view of still another example of the press molding machine.
【図１３】他のプレス成形型の斜視図。FIG. 13 is a perspective view of another press molding die.
【図１４】そのプレス成形型で成形する際の説明図。FIG. 14 is an explanatory view when molding with the press mold.
【図１５】芯部材を用いないでプレス成形を行った場合
に起こる現象の説明図。FIG. 15 is an explanatory diagram of a phenomenon that occurs when press molding is performed without using a core member.
１…素材としての可撓管、２…芯部材、３…型、４…螺
旋管、５…網状管、６…樹脂、７…完成品としての可撓
管、８ａ…ロ―ラ、８ｂ…ロ―ラ。DESCRIPTION OF SYMBOLS 1 ... Flexible tube as a material, 2 ... Core member, 3 ... Type, 4 ... Spiral tube, 5 ... Mesh tube, 6 ... Resin, 7 ... Flexible tube as a finished product, 8a ... Roller, 8b ... Roller.
Claims (1)
に網状に編まれた管状の部材を被せ、さらに、その部材
の外周に弾性を有する樹脂を被覆した構成からなる可撓
管の素材の中に、弾性材からなる芯部材を挿通した状態
で、前記芯部材が挿通された可撓管の素材をプレス加工
することによって、所定の異形の断面形状の可撓管に形
成することを特徴とする内視鏡用可撓管の製造方法。1. A flexible tube having a structure in which a spirally tubular tube having a substantially circular cross section is covered with a tubular member knitted in a net shape, and the outer periphery of the member is covered with a resin having elasticity. Forming a flexible tube having a predetermined irregular cross-sectional shape by pressing the material of the flexible tube in which the core member is inserted while the core member made of an elastic material is inserted in the material. A method for manufacturing a flexible tube for an endoscope, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5179102A JPH0732037A (en) | 1993-07-20 | 1993-07-20 | Production of flexible pipe for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5179102A JPH0732037A (en) | 1993-07-20 | 1993-07-20 | Production of flexible pipe for endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0732037A true JPH0732037A (en) | 1995-02-03 |
Family
ID=16060069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5179102A Withdrawn JPH0732037A (en) | 1993-07-20 | 1993-07-20 | Production of flexible pipe for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0732037A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006000281A (en) * | 2004-06-16 | 2006-01-05 | Olympus Corp | Manufacturing method of flexible tube for endoscope, flexible tube for endoscope and aging apparatus for the same |
| CN116981976A (en) * | 2020-12-24 | 2023-10-31 | 富士胶片株式会社 | Flexible tubes for endoscopes, endoscopic medical devices and their manufacturing methods |
-
1993
- 1993-07-20 JP JP5179102A patent/JPH0732037A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006000281A (en) * | 2004-06-16 | 2006-01-05 | Olympus Corp | Manufacturing method of flexible tube for endoscope, flexible tube for endoscope and aging apparatus for the same |
| CN116981976A (en) * | 2020-12-24 | 2023-10-31 | 富士胶片株式会社 | Flexible tubes for endoscopes, endoscopic medical devices and their manufacturing methods |
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| A300 | Withdrawal of application because of no request for examination |
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