JP4539932B2 - Bending method of a small diameter metal tube - Google Patents

Bending method of a small diameter metal tube Download PDF

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JP4539932B2
JP4539932B2 JP2000009057A JP2000009057A JP4539932B2 JP 4539932 B2 JP4539932 B2 JP 4539932B2 JP 2000009057 A JP2000009057 A JP 2000009057A JP 2000009057 A JP2000009057 A JP 2000009057A JP 4539932 B2 JP4539932 B2 JP 4539932B2
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bending
small diameter
diameter metal
metal tube
workpiece
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JP2001205349A (en )
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正樹 星野
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臼井国際産業株式会社
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【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
本発明は細径金属管の曲げ加工技術に関するものである。 The present invention relates to bending techniques of the small-diameter metal pipe.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
従来細径金属管の曲げ加工は、主として手動操作される治具を用いて手動加工により行なわれていた。 Bending of a conventional small diameter metal tube has been performed manually processed using the jig is mainly manually operated. しかし細径金属管の曲げ加工を手動で行なうと、充分な加工精度が得られず、加工能率も悪い。 However, performing bending of the small diameter metal pipe manually, without sufficient processing accuracy can be obtained, processing efficiency is also poor. 一方で特定形状の曲げ加工を自動的に行なうパワーベンダーと呼ばれる曲げ加工装置や、各種の曲げ加工を自動的に行なうNCベンダーと呼ばれる曲げ加工装置も使用されている。 Meanwhile bending bending and processing devices called automatically perform power vendor processing of specific shapes, various automatic bending device called NC vendors to perform bending of are also used. パワーベンダーは設備コストが比較的安く、且つ加工精度と加工能率上の問題を解決するが、特定形状の曲げ加工しかできず、形状変更に対応しにくいという難点がある。 Power vendor equipment cost is relatively cheap, but and solves the machining accuracy and machining efficiency problems can only bending of the specific shape, there is a drawback that it is difficult to correspond to the shape change. またパワーベンダーは、細径金属管に複雑な加工を短時間で施すことができるが、構造が複雑で設備費上でも問題があり、保守も煩雜である。 The power vendors, but can be applied in a short period of time complicated processing to a small diameter metal tube, there is a structural problem even complex and equipment costs on, maintenance is also annoyance 雜. また、加工条件を変化させるためのセットも複雑で時間がかかる。 Also, complicated and time consuming set for varying the processing conditions.
【0003】 [0003]
一方、NCベンダーは被加工細径金属管の軸芯方向に設定した複数箇所の被加工位置に対して、それぞれ設定された加工方向にそれぞれ設定された曲げ加工を施す装置であり、具体的には被加工細径金属管の一端側をチャックし、前記被加工細径金属管を軸芯を中心に回転して所定の加工方向を設定し、かつ前記被加工細径金属管を軸芯方向に移動して所定の被加工位置に設定するパイプひねりユニットと、前記被加工細径金属管を挟持して所定角度回動し、前記被加工細径金属管に引張りながら曲げ加工を施す曲げ加工手段を備えた構成となったもので、被加工細径金属管の一端側を把持するチャック装置、このチャック装置にてチャックされた被加工細径金属管を軸芯を中心に回転して所定の加工方向を設定し、かつ前記被加工細径金属 On the other hand, NC vendors for the work position of the plurality of locations set in the axial direction of the work small diameter metal pipe, a device for performing the configured bent respectively set processing direction respectively, specifically the one end of the work small diameter metal tube and chuck, said rotated around the shaft center of the work small diameter metal tube sets a predetermined processing direction, and the axial direction of the workpiece small diameter metal tube a pipe twisting unit to be set to a predetermined workpiece position by moving said clamp the workpiece small diameter metal pipe rotated by a predetermined angle, the subjected to bending while pulling on the processed thin metal tube bent into which was a configuration including a means, predetermined rotating chuck device for gripping one end of the work small diameter metal pipe, the workpiece diameter metal tube which is chucked by the chuck device around the shaft center set the working direction, and the processed thin metal を軸芯方向に移動して所定の被加工位置に設定するパイプひねりユニットと、曲げロールおよびこの曲げロールの周面に被加工細径金属管を押圧しながら、この被加工細径金属管を介して前記周面上を所定角度回動し、前記被加工細径金属管の他端の先端側よりチャックされた一端に向けて順次引張り曲げ加工するクランプ治具と、曲げ加工時における被加工細径金属管の反力受を有する曲げ装置を備えている。 A pipe twisting unit to be set to a predetermined workpiece position by moving in the axial direction, while pressing the workpiece small diameter metal pipe on the circumferential surface of the bending roll and the roll bending, the workpiece small diameter metal tube rotated by a predetermined angle on the circumferential surface through, to be processed the clamp jig sequentially tensile bending towards the chucked end from the distal end side of the other end of the work small diameter metal pipe, at the time of bending and a bending apparatus having a reaction force receiving small diameter metal tube.
【0004】 [0004]
図2はパイプを引張りながら曲げ加工を施すNCベンダーによる曲げ加工方法を例示したもので、曲げ装置11は、曲げロール11−1とこの曲げロールの周面に前記被加工細径金属管Pを押圧しながら、この被加工細径金属管を介して前記周面上を所定角度回動し曲げ加工する狭幅のクランプ治具11−2と、プレッシャーダイ(反力受)11−4を備え、曲げロール11−1とクランプ治具11−2はベンドアーム11−3に一体に取付けられている。 Figure 2 is an illustration of a processing method bending by NC vendor performing bending while pulling the pipe, the bending device 11, a bending the workpiece small diameter metal pipe P to the circumferential surface of the roll 11-1 Toko bending rolls while pressing, the narrow clamp jig 11-2 to bending rotated by a predetermined angle on the circumferential surface through the workpiece small diameter metal pipe, comprising a pressure die (reaction force receiver) 11-4 roll 11-1 and the clamp jig 11-2 bending is integrally attached to the bend arm 11-3.
【0005】 [0005]
すなわち従来の曲げ加工は、被加工細径金属管Pを曲げロール11−1とクランプ治具11−2にてクランプした後、プレッシャーダイ(反力受)11−4を前進移動させて被加工細径金属管Pに当接させ、この状態でベンドアーム11−3を所定角度回動して曲げ加工を施している。 That conventional bending, after clamping by a roll 11-1 and the clamp jig 11-2 bending the work small diameter metal pipe P, the work is advanced to the pressure die (reaction force receiver) 11-4 is in contact with the small diameter metal pipe P, is subjected to bending by a predetermined angle rotates the bend arm 11-3 in this state. この曲げ加工時、被加工細径金属管Pはクランプ治具11−2にて引張られながら曲げロール11−1の周面に押圧されながら曲げ加工が施される。 During the bending, the work small diameter metal pipe P is bent while being pressed against the peripheral surface of the roll 11-1 bent while being pulled by the clamp jig 11-2 is performed.
【0006】 [0006]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
しかるに、前記した従来の曲げ加工方法では、被加工細径金属管Pを曲げロール11−1とクランプ治具11−2にてクランプした状態で引張りながら一動作で所定の曲げ加工を施すため、被加工細径金属管Pを強くクランプしなければならず、その曲げ加工の際には図3に示すごとく被加工細径金属管Pに矢印のような大きなクランプ力がかかるため、被加工細径金属管Pの表面に局部的な座屈が発生しクランプ痕と称する凹状の食込み疵が付くという問題がある。 However, the conventional bending method described above, for performing a predetermined bending in one operation while pulling whilst clamped by a roll 11-1 and the clamp jig 11-2 bending the work small diameter metal pipe P, must be strongly clamp the workpiece small diameter metal pipe P, because a large clamping force, such as an arrow to be processed small diameter metal pipe P as shown in Figure 3 during its bending is applied, the work fine It occurs locally buckling on the surface of the diameter metal pipe P there is a problem that stick is concave biting flaw called clamping marks. また、同図に示すごとく、前工程の曲げ止まり位置と次工程の曲げ始め位置が近い場合には被加工細径金属管Pの直線部分がほとんどない状態となるので、これに対応するためには図4に示すごとく曲げロール21−1とクランプ治具21−2に前工程の曲げ形状に合せた溝21−3を作成した総型21とする必要があり、型コストが高くつくのみならず、この曲げ専用型のみでは直線状の曲げに対応できないため、図4に示すごとく直線状の溝21−3′を形成した曲げロール21−1′とクランプ治具21−2′を設けた二段式の曲げユニットとする必要があるなどの難点があった。 Further, as shown in the figure, before since the bending start position of step a bend-stop position and the next step is the absence most linear portion of the work small diameter metal pipe P when close, in order to cope with this If it must be the total mold 21 that created the groove 21-3 which fit bent shape of the previous step in the roll 21-1 and the clamp jig 21-2 bent as shown in FIG. 4, the mold costly only It not, with only the bending-only type can not correspond to the bending of the straight, provided 'to form a roll bending 21-1' groove 21-3 linear as shown in FIG. 4 and the clamp jig 21-2 ' It had drawbacks such as is required to be two-stage bending unit.
【0007】 [0007]
本発明はかかる問題を解決するためになされたもので、従来と同様のNCベンダーにより被加工細径金属管の表面に凹状のクランプ痕が生じないように曲げ加工することが可能で、かつ総型や二段式曲げユニットなども不要な細径金属管の曲げ加工方法を提案しようとするものである。 The present invention has been made to solve such a problem, can be concave clamping marks on the surface of the workpiece diameter metal pipe by conventional same NC vendors bent to so as not to generate, and the total like type and two-stage bending unit is also intended to provide a bending method of unwanted small diameter metal tube.
【0008】 [0008]
【課題を解決するための手段】 In order to solve the problems]
前記課題を解決するために、本発明に係る細径金属管の曲げ加工方法は、曲げロールとクランプ治具を途中の曲げ位置まで回動させた状態でプレッシャーダイ(反力受)にて被加工細径金属管を押し曲げる方法と、この押し曲げた後引き続いて引張り曲げ加工を施す方法であり、その第1の実施態様は被加工細径金属管をその軸芯を中心に所定角度回動して加工方向を設定し、この被加工細径金属管を曲げロールとパイプクランプ治具とで挾持し、かつ反力受を加工位置へ移動させて加工細径金属管に当接させた状態で、前記曲げロールの周面に前記被加工細径金属管を押圧しながら該曲げロールと前記クランプ治具を所定角度回動させて前記被加工細径金属管を引張りながら曲げ加工を施す曲げ加工方法において、 前記被加工細径金属管 In order to solve the above problems, bending method of a small diameter metal tube according to the present invention, the at pressure die (reaction force receiver) in a state in which the bending roll and the clamp fixture is rotated until the middle of the bend position a method of bending press machining thin metal tube, a method of applying a tensile bending subsequently after bending the press, the first embodiment is a predetermined angle, turn the workpiece small diameter metal pipe about its axial moving to set the machining direction, it causes the bending of the work small diameter metal tube is sandwiched between the roll and the pipe clamp jig, and the reaction force receiver is moving to the processing position in contact with the workpiece diameter metal tube in the state, the peripheral surface in the flexural roll while pressing the workpiece small diameter metal pipe the clamp jig is rotated by a predetermined angle bend while pulling the workpiece small diameter metal pipe working of the bending roll in bending method performed, the processed thin metal tube 引張りながら曲げ加工を施す前に、被加工細径金属管を曲げロールとパイプクランプ治具とで挾持した後、パイプ後端を開放させ、反力受を加工位置へ移動させる前に前記曲げロールとパイプクランプ治具を曲げ角度回動させて被加工細径金属管を反力受側に回動位置させ、次いで反力受を加工位置へ移動させて被加工細径金属管を前記曲げ角度押し曲げることを特徴とし、 Before performing the bending while pulling, after sandwiched by the roll and the pipe clamp jig to bend the workpiece small diameter metal tube, the bending roll before opens the pipe rear end, to move the reaction force receiving the machining position and a pipe clamp jig to bend the angle rotated is rotated positions to the reaction force reception side of the workpiece diameter metal pipe, and then the bending angle of the workpiece diameter metal tube by moving the reaction force receiving the machining position and wherein the bending press,
また第2の実施態様は前記の押し曲げ加工に引き続いて、前記クランプ治具を所定角度回動させて前記被加工細径金属管に引張りながら曲げ加工を施すことを特徴とするものである。 The second embodiment subsequent to press bending of the one in which the clamp jig by a predetermined angle rotation and characterized by applying bending while pulling on the processed thin metal pipe.
【0009】 [0009]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
図1は本発明に係る細径金属管の曲げ加工方法の一実施例を示す概略斜視図である。 Figure 1 is a schematic perspective view showing an embodiment of a bending method of a small diameter metal tube according to the present invention.
【0010】 [0010]
すなわち本発明に係る細径金属管の曲げ加工は、図1に示すように曲げ装置1により被加工細径金属管Pを曲げ加工するに際し、被加工細径金属管Pを曲げロール1−1とクランプ治具1−2にてクランプした後パイプ後端を開放し、プレッシャーダイ(反力受)1−4は被加工細径金属管Pより離れた位置で、ベンドアーム1−3を途中の曲げ位置まで角度θ回動させて被加工細径金属管Pの未加工側をプレッシャーダイ(反力受)1−4側に位置させ、この状態でプレッシャーダイ(反力受)1−4を加工位置まで前進移動させて曲げロール1−1の円弧溝に前記被加工細径金属管Pを押圧しながら曲げ角度θの第1段の曲げ加工を施す。 That bending small diameter metal tube according to the present invention, the roll 1-1 bending upon bending the work small diameter metal pipe P by the bending apparatus 1, as shown in FIG. 1, the work small diameter metal pipe P and opening the pipe rear was clamped in clamp jig 1-2, the pressure die (reaction force receiver) 1-4 at a position apart from the work small diameter metal pipe P, the middle bend arm 1-3 bending to the position by an angle θ rotated to position the raw side of the work small diameter metal pipe P to pressure die (reaction force receiver) 1-4 side, pressure die in this state (reaction force receiver) 1-4 the performing the bending of the first stage of the bending angle θ while pressing the workpiece small diameter metal pipe P to the arcuate groove of the bending is advanced moved to the machining position rolls 1-1. この第1段の曲げ加工は、プレッシャーダイ(反力受)1−4による押し曲げであるから、被加工細径金属管Pにかかるクランプ力は比較的小さくて済み、チャックの前工程側角部に大きな力が集中することがない。 Bending the first stage, since it is pressed and bent by the pressure die (reaction force receiver) 1-4, the clamping force on the workpiece small diameter metal pipe P is requires relatively small, pre-process side angles of the chuck large force to the part is not concentrated. したがって、この曲げ加工の際には被加工細径金属管Pの表面に座屈による凹状のクランプ痕と称する食込み疵などが付くことはほとんどない。 Therefore, such biting flaw called concave clamping marks by buckling the surface of the object to be processed small diameter metal pipe P is rarely stick to the time of the bending.
【0011】 [0011]
前記第1段の押し曲げ加工が終了すると、第2段(最終曲げ)の曲げ加工を施すため、プレッシャーダイ(反力受)1−4をその第1段の曲げ位置に固定した状態でベンドアーム1−3を残りの角度回動して最終の曲げ加工を施す。 When pushing bending of the first stage is completed, a second stage for performing a bending (final bending), the bend in a state of fixing the pressure die (reaction force receiver) 1-4 to bend position of the first stage the arms 1-3 and the remainder of the angular rotation subjected to final bending. この曲げ加工は被加工細径金属管Pがクランプ治具1−2にて引張られながら曲げロール1−1の円弧溝に押圧されながら曲げ加工が施される。 This bending is bending while the work small diameter metal pipe P is pressed against the arcuate grooves of the rolls 1-1 bending while being pulled by the clamp jig 1-2 process is performed. この時被加工細径金属管Pは第1段の押し曲げ加工により一部曲げられているため、残りの曲げを引張り曲げ加工により行っても、被加工細径金属管Pは曲げロール1−1の円弧溝にはまり込んだ状態で摩擦力を受けるため被加工細径金属管Pを強くクランプする必要はない。 Since the bent part by the time the work small diameter metal pipe P is pressed and bent in the first-stage processing, be performed by a tension bending the remaining bending, the work small diameter metal pipe P is bent roll 1- it is not necessary to strongly clamp the work small diameter metal pipe P to receive a frictional force in a state of fitted into one arcuate groove. したがってこの第2段の引張り曲げ加工の際にも被加工細径金属管Pに大きなクランプ力がかかることがないため、被加工細径金属管Pの表面にクランプ痕と称する食込み疵などが付くことはほとんどない。 Thus for large clamping force to be processed small diameter metal pipe P even when the tensile bending of the second stage does not take, such as biting flaw called clamping marks on the surface of the workpiece small diameter metal pipe P is attached it is little. なお曲げ角度が小さい場合にはその後の曲げはなくてもよい。 Incidentally bend when the angle is small may not subsequent bending.
【0012】 [0012]
【発明の効果】 【Effect of the invention】
以上説明したごとく、本発明は曲げロールとクランプ治具を途中の曲げ位置まで回動させた状態でプレッシャーダイ(反力受)にて細径金属管を押し曲げる方法であり、またその押し曲げに引き続いて引張り曲げにより曲げ加工を施す方法であるから、押し曲げ加工時および引張り曲げ加工時に細径金属管に大きなクランプ力がかかることがなく、よって表面に凹状のクランプ痕と称する食込み疵などがほとんどない高品質の曲げ加工製品を得ることができるという優れた効果を奏する。 As described above, the present invention is a method bending press thin metal tube by pressure die (reaction force receiver) in a state of being bent rotating the roll and the clamp fixture to the middle of the bending position and bending press that the bending by the bending tensile subsequently because a method of applying to, press bending during and tensile bending without take great clamping force a small diameter metal tube during processing, thus biting flaw called concave clamping marks on the surface, etc. There exhibits an excellent effect that it is possible to obtain almost no high-quality bent product of. さらに、本発明は総型や二段式曲げユニットなども不要であるため設備費が高くつくこともない。 Furthermore, the present invention is nor costly equipment costs because it is also unnecessary, such as the total types and two-stage bending unit.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】本発明に係る細径金属管の曲げ加工方法の一実施例を示す概略斜視図である。 1 is a schematic perspective view showing an embodiment of a bending method of a small diameter metal tube according to the present invention.
【図2】本発明の対象とする従来の細径金属管の曲げ加工方法の一例を示す概略斜視図である。 Figure 2 is a schematic perspective view showing an example of a bending method of a conventional small diameter metal tube to which the present invention.
【図3】図2に示す従来の曲げ加工方法の要部を拡大して示す概略斜視図である。 Figure 3 is a schematic perspective view showing an enlarged main portion of a conventional bending method illustrated in FIG.
【図4】同じく従来の細径金属管の曲げ加工方法の他の例を示す概略斜視図である。 [4] which is also a schematic perspective view showing another example of a bending method of a conventional small diameter metal tube.
【符号の説明】 DESCRIPTION OF SYMBOLS
1 曲げ装置1−1 曲げロール1−2 クランプ治具1−3 ベンドアーム1−4 プレッシャーダイ(反力受) 1 bending apparatus 1-1 bending rolls 1-2 clamp jig 1-3 bend arm 1-4 Pressure die (reaction force receiver)
P 被加工細径金属管 P to be processed small diameter metal tube

Claims (2)

  1. 被加工細径金属管をその軸芯を中心に所定角度回動して加工方向を設定し、この被加工細径金属管を曲げローラとパイプクランプ治具とで挾持し、かつ反力受を加工位置へ移動させて被加工細径金属管に当接させた状態で、前記曲げロールの周面に前記被加工細径金属管を押圧しながら該曲げロールと前記クランプ治具を所定角度回動させて前記被加工細径金属管を引張りながら曲げ加工を施す曲げ加工方法において、 前記被加工細径金属管を引張りながら曲げ加工を施す前に、被加工細径金属管を曲げロールとパイプクランプ治具とで挾持した後、パイプ後端を開放させ、反力受を加工位置へ移動させる前に前記曲げロールとパイプクランプ治具を曲げ角度回動させて被加工細径金属管を反力受側に回動位置させ、次いで反力受を加工位置 The work small diameter metal tube by a predetermined angle rotates around its shaft center to set the machining direction, and clamped between the bent workpiece small diameter metal tube roller and pipe clamp jig, and the reaction force receiver processing position is moved to and being in contact with the workpiece diameter metal tube, the bending said bending roll and the clamp jig a predetermined angle times while pressing the workpiece small diameter metal pipe on the circumferential surface of the roll in bending method by moving subjected to bending while pulling the workpiece small diameter metal pipe, before performing the bending while pulling the workpiece small diameter metal tube, roll and pipe bending the work small diameter metal tube after clamping in a clamping jig opens the pipe rear, the bending roll and pipe clamp jig to the bending angle rotated workpiece small diameter metal tube before moving the reaction force receiving the processing position counter rotated position the force receiving side, then the processing position the reaction force receiving 移動させて被加工細径金属管を前記曲げ角度押し曲げることを特徴とする細径金属管の曲げ加工方法。 Bending method of a small diameter metal tube, characterized in that bending the moved press the bending angle to be processed thin metal pipe.
  2. 被加工細径金属管をその軸芯を中心に所定角度回動して加工方向を設定し、この被加工細径金属管を曲げロールとパイプクランプ治具とで挾持し、かつ反力受を加工位置へ移動させて加工細径金属管に当接させた状態で、前記曲げロールの周面に前記被加工細径金属管を押圧しながら該曲げロールと前記クランプ治具を所定角度回動させて前記被加工細径金属管を引張りながら曲げ加工を施す曲げ加工方法において、被加工細径金属管を曲げロールとパイプクランプ治具とで挾持した後、パイプ後端を開放させ、反力受を加工位置へ移動させる前に前記曲げロールとパイプクランプ治具を曲げ角度回動させて被加工細径金属管を反力受側に回動位置させ、次いで反力受を加工位置へ移動させて被加工細径金属管を前記曲げ角度押し曲げ、し The work small diameter metal tube by a predetermined angle rotates around its shaft center to set the machining direction, and clamped between the workpiece diameter bending a metal tube roll and pipe clamp jig, and the reaction force receiver processing position is moved to and being in contact with the workpiece diameter metal tube, the bending said bending roll and the clamp jig a predetermined angle times while pressing the workpiece small diameter metal pipe on the circumferential surface of the roll in bending method by moving subjected to bending while pulling the workpiece small diameter metal pipe, after sandwiched by the roll and the pipe clamp jig to bend the workpiece small diameter metal pipe, it opens the pipe rear anti the bending is bending angle rotating the roll and pipe clamp jig before moving the Chikara受 the processing position is pivoted position by the reaction force reception side of the workpiece diameter metal pipe, and then the processing position the reaction force receiving the moved bending press the bending angle to be processed thin metal tube, tooth る後前記クランプ治具を所定角度回動させて前記被加工細径金属管に引張りながら曲げ加工を施すことを特徴とする細径金属管の曲げ加工方法。 Bending method of a small diameter metal tube which the cause of the clamping jig is rotated by a predetermined angle and characterized by applying bending while pulling on the processed thin metal tube after that.
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JP4591908B2 (en) * 2003-12-15 2010-12-01 臼井国際産業株式会社 Pipe bending device

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JPH0357419U (en) * 1989-09-30 1991-06-03

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JPS60126213U (en) * 1984-01-30 1985-08-24
JPS6326221A (en) * 1986-07-16 1988-02-03 Chiyoda Kogyo Kk Pipe bender
JP2918017B2 (en) * 1994-10-17 1999-07-12 日本軽金属株式会社 Three-dimensional bending member obtained by bending method and the method of profile

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JPH0357419U (en) * 1989-09-30 1991-06-03

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