JP2931903B2 - Focusing and fixing of small diameter resin tube - Google Patents
Focusing and fixing of small diameter resin tubeInfo
- Publication number
- JP2931903B2 JP2931903B2 JP16852789A JP16852789A JP2931903B2 JP 2931903 B2 JP2931903 B2 JP 2931903B2 JP 16852789 A JP16852789 A JP 16852789A JP 16852789 A JP16852789 A JP 16852789A JP 2931903 B2 JP2931903 B2 JP 2931903B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- diameter
- small
- resin tube
- 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
- 229920005989 resin Polymers 0.000 title claims description 65
- 239000011347 resin Substances 0.000 title claims description 65
- 229920005992 thermoplastic resin Polymers 0.000 claims description 23
- 238000002844 melting Methods 0.000 claims description 21
- 230000008018 melting Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 18
- 239000004677 Nylon Substances 0.000 claims description 8
- 229920001778 nylon Polymers 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 229930182556 Polyacetal Natural products 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 description 10
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 238000005219 brazing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は自動車、或は各種機械装置等に給油、給気等
のための各種配管として使用される複数本の細径樹脂チ
ューブを基体に対して取付けが便利なように或いは間隔
を保つように一括集中的に配管し得るようにするための
集束固定方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention uses a plurality of small-diameter resin tubes used as various pipes for lubricating and supplying air to an automobile or various mechanical devices on a substrate. The present invention relates to a convergence fixing method for enabling piping to be collectively and collectively so as to facilitate installation or maintain an interval.
（従来の技術） 従来、この種の各種配管の多くは金属製の細径管が使
用されているが、このような細径金属を集中配管するた
めの集束固定体を得る方法としては、複数本の細径金属
管を治具上に並列的にセットし、隣接する金属管相互を
直接鑞付けするかまたは適宜取付け金具を配してこれに
鑞付けすることによって行なわれていた。また、並列す
る複数本の金属管を所望形状の空腔を有する金型内に挿
通させておいて、溶融樹脂を金型内に射出成形し取付け
片の成形と金属管の固定とを同時に行なわせる方法も広
く行なわれていた。(Prior Art) Conventionally, most of various pipes of this type use metal thin-diameter pipes. As a method of obtaining a focusing fixed body for concentrating such small-diameter metal pipes, there are several methods. This has been done by setting a small diameter metal tube of a book in parallel on a jig and directly brazing the adjacent metal tubes to each other or brazing it with an appropriate fitting. In addition, a plurality of parallel metal tubes are inserted into a mold having a cavity of a desired shape, and molten resin is injection-molded into the mold to simultaneously form a mounting piece and fix the metal tube. Widespread methods were also used.
（発明が解決すべき課題） しかしながら、近年軽量化の要求から所望の合成樹脂
によって作られた樹脂チューブを細径管とて採用する機
運が高まりつゝあり、上記したような細径管の集束固定
方法は配管が金属管によって形成されている場合にはそ
れなりの成果が得らているが、配管が樹脂チューブであ
る場合には前者の方法は全く採用することは出来ず、ま
た後者の方法はブラケット、スペーサー等のチューブ取
付け片の成形とこれへの樹脂チューブの取付け固定が一
挙に行なえるので極めて合理的な方法であると云える
が、実際に射出成形によって得られた集束固定体におけ
る取付部の樹脂チューブが潰れ等によって径が一定せず
実用上問題があった。(Problems to be Solved by the Invention) However, in recent years, there has been an increasing tendency to adopt a resin tube made of a desired synthetic resin as a small-diameter tube due to a demand for a reduction in weight. As for the fixing method, a certain result has been obtained when the pipe is formed of a metal pipe, but when the pipe is a resin tube, the former method cannot be adopted at all, and the latter method is not used. It can be said that this is an extremely rational method since the mounting of the tube mounting pieces such as brackets and spacers and the mounting and fixing of the resin tube to this can be performed at a glance, but in the focused fixed body actually obtained by injection molding, The diameter of the resin tube in the mounting portion was not constant due to crushing or the like, and there was a practical problem.
本発明は細径樹脂チューブの集束固定を行なうに際し
ての上記問題点を解決し、射出成形によって取付け片の
成形と樹脂チューブの固定とを同時に行なって、しかも
樹脂チューブの潰れ等による径の変化を来すことがない
ような細径樹脂チューブの集束固定方法を提供すること
を目的とするものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in performing the focusing and fixing of a small-diameter resin tube. It is an object of the present invention to provide a method of focusing and fixing a small-diameter resin tube that does not come.
（課題を解決するための手段） 本発明者は上記の問題点について鋭意検討した結果次
のことが判かった。即ち、自動車等の給油、給気等に用
いる配管には外径20mm程度以下の極めて細径の樹脂チュ
ーブが使用されるが、射出成形に際して樹脂チューブが
例え厚肉であっても、加熱溶融した熱可塑性樹脂の金型
への射出に際して、該樹脂の保有する熱と射出圧によっ
て容易に樹脂チューブが軟化変形し、管路が潰れたり、
また潰れるまでに至らなくても変形によって所定の孔径
を保つことが困難となる。(Means for Solving the Problems) The present inventors have conducted intensive studies on the above problems and found the following. That is, a very thin resin tube having an outer diameter of about 20 mm or less is used for pipes used for oil supply, air supply, and the like of automobiles and the like. Upon injection of the thermoplastic resin into the mold, the resin tube is easily softened and deformed by the heat and injection pressure of the resin, and the conduit is crushed,
In addition, it is difficult to maintain a predetermined hole diameter due to deformation even if the hole does not collapse.
そこで本発明者は、細径樹脂チューブに使用される樹
脂及び取付け片の射出成形に使用される熱可塑性樹脂の
融点について十分な考慮を払うことによってこの問題を
解決できることを見出し本発明を完成するに至った。即
ち例えば細径樹脂チューブに使用する樹脂として融点が
175℃〜255℃と比較的融点の高いナイロン系の樹脂群か
ら選んだときに、ブラケット、スペーサー等の取付け片
の射出成形用として用いる熱可塑性樹脂にはポリエチレ
ン、ポリプロピレン、ABS、ポリアセタールの各樹脂群
のうちの融点110〜175℃のものから選び、従って取付け
片を形成する樹脂融点をチューブを形成する樹脂の融点
より低くすることによって射出成形による樹脂チューブ
の集束固定を孔径変形を殆んど伴うことなく行なうこと
に成功したものである。The present inventors have found that this problem can be solved by paying sufficient consideration to the melting point of the resin used for the small-diameter resin tube and the thermoplastic resin used for injection molding of the mounting piece, and complete the present invention. Reached. That is, for example, the melting point of the resin used for the small-diameter resin tube is
When selected from the group of nylon resins with a relatively high melting point of 175 ° C to 255 ° C, the thermoplastic resins used for injection molding of mounting pieces such as brackets and spacers are polyethylene, polypropylene, ABS, and polyacetal resins. By selecting from the group having a melting point of 110 to 175 ° C, the melting point of the resin forming the mounting piece is made lower than the melting point of the resin forming the tube. It was successful without doing it.
従って本発明は、適宜の間隔をもって並列的に集合配
列した融点が175〜255℃の複数本の細径樹脂チューブ
を、所望の形状の取付け片が形成されるような空腔を有
する金型内にその所定部位が載置されるようにして挿通
配置し、該融点が110〜175℃の熱可塑性樹脂を用いて該
金型内に加熱溶融状態の該熱可塑性樹脂を射出した後、
該熱可塑性樹脂を冷却固化させて取付け片を形成すると
ともに並列した樹脂チューブの外周面を該取付け片に密
着固定する細径樹脂チューブの集束固定方法を特徴とす
るものであり、また前記細径樹脂チューブはナイロンで
あり、前記取付け片を形成する熱可塑性樹脂はポリエチ
レン、ポリプロピレン、ナイロン、ABS及びポリアセタ
ールのうちの何れかであることが好ましい。Therefore, the present invention relates to a method of forming a plurality of small-diameter resin tubes having a melting point of 175 to 255 ° C., which are collectively arranged in parallel at appropriate intervals, in a mold having a cavity in which a mounting piece having a desired shape is formed. It is inserted and arranged so that the predetermined portion is placed thereon, and after injecting the thermoplastic resin in a heat-melted state into the mold using a thermoplastic resin having a melting point of 110 to 175 ° C.,
The thermoplastic resin is cooled and solidified to form a mounting piece, and a method of converging and fixing a small-diameter resin tube for closely fixing an outer peripheral surface of a parallel resin tube to the mounting piece is provided. The resin tube is made of nylon, and the thermoplastic resin forming the mounting piece is preferably any one of polyethylene, polypropylene, nylon, ABS and polyacetal.
（作 用） 以下に本発明の詳細およびその作用について、添付図
面に基いて説明すると、第１図は本発明における細径樹
脂チューブの集束固定方法に係る金型における熱可塑性
樹脂の射出後の状態を示すものの横断面図であって、図
において、１は油、気体等それぞれ異なる流路を形成す
る細径樹脂チューブであり、２、２′は内部に便宜形状
の空腔３を形成した金型である。金型２、２′には熱可
塑性樹脂６の射出口４及び冷却水の流通路５が配設さ
れ、空腔３内に射出口４から射出充填された熱可塑性樹
脂６による取付け片が空腔３内で速やかに冷却固化され
るよう形成されている。(Operation) The details of the present invention and the operation thereof will be described below with reference to the accompanying drawings. FIG. 1 is a view showing a method for focusing and fixing a small-diameter resin tube according to the present invention after injection of a thermoplastic resin in a mold. FIG. 3 is a cross-sectional view showing a state, in which 1 is a small-diameter resin tube forming different flow paths such as oil and gas, and 2 and 2 ′ have a cavity 3 of a convenient shape formed therein. It is a mold. An injection port 4 for thermoplastic resin 6 and a flow passage 5 for cooling water are provided in the molds 2 and 2 ′, and a mounting piece made of the thermoplastic resin 6 injected and filled from the injection port 4 into the cavity 3 is empty. It is formed so as to be rapidly cooled and solidified in the cavity 3.
本発明において細径樹脂チューブ１の集束固定を行な
うに際しては、先ず集束固定しようとする融点が175〜2
55℃の合成樹脂からなる複数本の細径樹脂チューブ１を
所望の間隔を隔てゝ平面状又は立体状に並列して配列さ
せ、必要に応じて適当な治具等によってその並列状態を
保つように仮止めしておいて、その所望の部位を金型
２、２′内に幅方向に一括的に狭持されるように挿通配
置する。次に射出口４から、樹脂チューブ１よりも低い
融点が110〜175℃の加熱溶融した熱可塑性樹脂を金型
２、２′に形成された空腔３内に射出して、これを空腔
３に充填させるとともに冷却水流通路５に冷却水を供給
して金型内の熱可塑性樹脂を冷却固化させると、熱可塑
性樹脂は細径樹脂チューブ１の外周面に密着するように
して固化し、取付け片6a、6bに細径樹脂チューブ１を固
定した集束固定体が得られる。In the present invention, when the small-diameter resin tube 1 is focused and fixed, the melting point to be focused and fixed is 175 to 2 first.
A plurality of small-diameter resin tubes 1 made of a synthetic resin at 55 ° C. are arranged side by side at a desired interval in a plane or three-dimensional form, and if necessary, the parallel state is maintained by an appropriate jig or the like. And the desired portion is inserted and arranged in the molds 2 and 2 'so as to be collectively held in the width direction. Next, from the injection port 4, a thermoplastic resin having a melting point lower than that of the resin tube 1 and having a melting point of 110 to 175 ° C. is injected into the cavity 3 formed in the molds 2 and 2 ′. 3 and cooling water is supplied to the cooling water flow passage 5 to cool and solidify the thermoplastic resin in the mold, so that the thermoplastic resin is solidified in close contact with the outer peripheral surface of the small-diameter resin tube 1, A convergence fixed body in which the small-diameter resin tube 1 is fixed to the mounting pieces 6a and 6b is obtained.
本発明の細径樹脂チューブの集束固定方法は上記した
如く射出成形に使用する樹脂に融点が110〜175℃の熱可
塑性樹脂を使用するとともに、樹脂チューブの樹脂とし
て融点が175〜255℃の合成樹脂を使用するものであるか
ら、細径樹脂チューブ１を並列的に狭持した金型２、
２′中の空腔３内に高温に融解された熱可塑性樹脂を射
出した場合に、細径樹脂チューブ１の軟化を相当程度抑
えることが出来、従って細径樹脂チューブ１は射出圧に
よって潰れて管路が閉塞したり、径が変化したりするよ
うなことがなく、また取付け片6a、6bの成形とともに並
列状の細径樹脂チューブ１の取付け片6a、6bへの固定を
確実に行なうことが出来る。As described above, the method for converging and fixing a small-diameter resin tube according to the present invention uses a thermoplastic resin having a melting point of 110 to 175 ° C as a resin used for injection molding, and a resin having a melting point of 175 to 255 ° C as a resin for the resin tube. Since a resin is used, a mold 2 in which narrow resin tubes 1 are held in parallel,
When the thermoplastic resin melted at a high temperature is injected into the cavity 3 in the 2 ′, the softening of the small-diameter resin tube 1 can be suppressed to a considerable extent, so that the small-diameter resin tube 1 is crushed by the injection pressure. The pipe line is not blocked or the diameter does not change, and the fixing of the parallel-shaped small-diameter resin tube 1 to the mounting pieces 6a and 6b is securely performed together with the formation of the mounting pieces 6a and 6b. Can be done.
次に自動車用に使用されるナイロン（PA）系の細径樹
脂チューブとこれに好適な射出成形用熱可塑性樹脂とを
例示すると第１表の通りである。Next, Table 1 shows nylon (PA) -based thin resin tubes used for automobiles and thermoplastic resins for injection molding suitable for the tubes.
勿論本発明において樹脂チューブに使用される樹脂は
融点が175〜255℃の合成樹脂であれば必ずしもナイロン
系の樹脂に限定されるものではない。従って射出成形に
使用する熱可塑性樹脂は樹脂チューブを形成する樹脂の
融点及び軟化点の考慮の上、適宜選定する必要がある。 Of course, the resin used for the resin tube in the present invention is not necessarily limited to a nylon resin as long as it is a synthetic resin having a melting point of 175 to 255 ° C. Therefore, it is necessary to appropriately select the thermoplastic resin used for injection molding in consideration of the melting point and softening point of the resin forming the resin tube.
次に本発明による細径樹脂チューブの集束固定方法に
ついての実施例を示す。Next, an example of a method for focusing and fixing a small-diameter resin tube according to the present invention will be described.
（実施例） それぞれ所望の長さに切断した内径6.9mm、外径8.0mm
の３本のナイロン（PA11、融点：約185℃）製細径樹脂
チューブ1aと、内径8.0mm、外径10.0mmの１本の細径樹
脂チューブ1bとを第２図に示すように中央部にブラケッ
ト状の取付け片6aを、また両端部付近にスペーサー状の
取付け片曲を配して取付けた集束固定体を得るに際し、
各細径樹脂チューブを所定の間隔をもって並列させて、
その所定の部位をそれぞれブラケット形状及びスペーサ
ー形状の空腔部を形成させた射出成形用金型２、２′に
狭持させ、次いで金型２、２′の射出口４から165℃の
温度に溶融したポリプロピレン（PP融点：約160℃）を
金型内250kgf/cm2でもって空腔３内に射出充填し、引続
き金型の通水路５に冷却水を供給することによって空腔
内に射出した溶融ポリプロピレン樹脂が完全に固化した
後、金型の冷却を停止し得られた集束固定体を金型から
取出した。(Example) Inner diameter 6.9mm, outer diameter 8.0mm cut to desired length respectively
The three narrow resin tubes 1a made of nylon (PA11, melting point: about 185 ° C.) and one narrow resin tube 1b having an inner diameter of 8.0 mm and an outer diameter of 10.0 mm were placed at the center as shown in FIG. In order to obtain a convergence fixed body attached with bracket-like mounting pieces 6a on both sides and spacer-like mounting pieces bent near both ends,
Each small-diameter resin tube is arranged in parallel at a predetermined interval,
The predetermined portions are sandwiched between injection molding dies 2 and 2 ′ each having a bracket-shaped and spacer-shaped cavity formed therein, and then heated to a temperature of 165 ° C. from the injection port 4 of the dies 2 and 2 ′. Molten polypropylene (PP melting point: about 160 ° C.) is injected and filled into cavity 3 with a mold of 250 kgf / cm 2 , and subsequently injected into cavity by supplying cooling water to water passage 5 of the mold. After the melted polypropylene resin was completely solidified, the cooling of the mold was stopped, and the obtained focused fixed body was removed from the mold.
得られた集束固定体の各細径樹脂チューブはそれぞれ
の取付け片6a、6bに確実に固定されており、またそれぞ
れの内径は何れの個所においても略一定に保たれていて
管路に殆んど変形ないことが確認された。Each small-diameter resin tube of the obtained focusing fixed body is securely fixed to each mounting piece 6a, 6b, and the inside diameter of each is kept substantially constant at any point, and almost all of the tubes are connected to the conduit. It was confirmed that no deformation occurred.
（発明の効果） 以上述べたように、本発明の方法によるときは射出成
形法を利用して、ブラケット等の取付け片の成形と細径
樹脂チューブを取付け片への集束固定を行なうに際し
て、金型内に射出する樹脂として融点が110〜175℃の熱
可塑性樹脂を用い、細径樹脂チューブを形成する樹脂と
して融点が175℃〜255℃の合成樹脂を使用したので、射
出成形作業の実施による樹脂チューブの軟化変形を防止
することが出来るので実際上極めて効果ある発明であ
る。(Effects of the Invention) As described above, when the method of the present invention is used to form a mounting piece such as a bracket and to bundle and fix a small-diameter resin tube to the mounting piece using an injection molding method, gold is used. As a resin to be injected into the mold is a thermoplastic resin with a melting point of 110 to 175 ° C, and a synthetic resin with a melting point of 175 to 255 ° C is used as a resin for forming the small-diameter resin tube, so it is necessary to carry out injection molding work. This is an extremely effective invention in practice because it can prevent softening deformation of the resin tube.
第１図は本発明の細径樹脂チューブの集束固定方法にお
ける射出成形状態の金型状況を示す横断面図、第２図は
本発明の細径樹脂チューブの集束固定方法によって得ら
れた集束固定体の１例を示す平面図である。 １、1a、1b……細径樹脂チューブ、２、２′……金型、
３……空腔部、４……射出口、５……冷却水流通路、６
……熱可塑性樹脂、6a、6b……取付け片。FIG. 1 is a cross-sectional view showing a state of a mold in an injection molding state in the method for converging and fixing a small-diameter resin tube according to the present invention, and FIG. It is a top view which shows an example of a body. 1, 1a, 1b ... small resin tube, 2, 2 '... mold,
3 ... cavity, 4 ... injection port, 5 ... cooling water flow passage, 6
... Thermoplastic resin, 6a, 6b ... Mounting piece.
Claims (2)
融点が175〜255℃の複数本の細径樹脂チューブを、所望
の形状の取付け片が形成されるような空腔を有する金型
内にその所定部位が載置されるようにして挿通配置し、
該融点が110〜175℃の熱可塑性樹脂を用いて該金型内に
加熱溶融状態の該熱可塑性樹脂を射出した後、該熱可塑
性樹脂を冷却固化させて取付け片を形成するとともに並
列した樹脂チューブの外周面を該取付け片に密着固定す
ることを特徴とする細径樹脂チューブの集束固定方法。1. A plurality of small-diameter resin tubes having a melting point of 175 to 255 ° C., which are collectively arranged in parallel at appropriate intervals, are placed in a mold having a cavity for forming a mounting piece having a desired shape. Is placed so that the predetermined part is placed on the
After injecting the thermoplastic resin in a heated and molten state into the mold using the thermoplastic resin having a melting point of 110 to 175 ° C., the thermoplastic resin is cooled and solidified to form a mounting piece and the resin in parallel. A method for converging and fixing a small-diameter resin tube, wherein the outer peripheral surface of the tube is closely fixed to the mounting piece.
け片を形成する熱可塑性樹脂はポリエチレン、ポリプロ
ピレン、ナイロン、ABS及びポリアセタールのうちの何
れかである請求項１記載の細径樹脂チューブの集束固定
方法。2. The focusing of the small diameter resin tube according to claim 1, wherein the small diameter resin tube is nylon, and the thermoplastic resin forming the mounting piece is any one of polyethylene, polypropylene, nylon, ABS and polyacetal. Fixing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16852789A JP2931903B2 (en) | 1989-06-30 | 1989-06-30 | Focusing and fixing of small diameter resin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16852789A JP2931903B2 (en) | 1989-06-30 | 1989-06-30 | Focusing and fixing of small diameter resin tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0334826A JPH0334826A (en) | 1991-02-14 |
| JP2931903B2 true JP2931903B2 (en) | 1999-08-09 |
Family
ID=15869673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16852789A Expired - Fee Related JP2931903B2 (en) | 1989-06-30 | 1989-06-30 | Focusing and fixing of small diameter resin tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2931903B2 (en) |
-
1989
- 1989-06-30 JP JP16852789A patent/JP2931903B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0334826A (en) | 1991-02-14 |
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