JPH1058051A - Pipe bending device - Google Patents
Pipe bending deviceInfo
- Publication number
- JPH1058051A JPH1058051A JP22259496A JP22259496A JPH1058051A JP H1058051 A JPH1058051 A JP H1058051A JP 22259496 A JP22259496 A JP 22259496A JP 22259496 A JP22259496 A JP 22259496A JP H1058051 A JPH1058051 A JP H1058051A
- Authority
- JP
- Japan
- Prior art keywords
- bending
- pipe
- tube
- die
- members
- 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.)
- Granted
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、管を曲げ型と締め
型とにより挟持し、締め型を曲げ型の廻りに公転させて
曲げ加工する管の曲げ加工装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube bending apparatus for clamping a tube between a bending die and a clamping die, and revolving the clamping die around the bending die to bend the pipe.
【０００２】[0002]
【従来の技術】従来より、管の曲げ加工時に、断面変形
や、しわの発生を抑えるために芯金が用いられている。
芯金には種々のものがあるが、例えば、特開昭６３−２
３５０２６号公報にあるように、径方向には伸縮可能で
軸方向に伸長阻止部材を備えた可撓性の弾性チューブを
管内に挿入し、このチューブに非圧縮性の流体を圧入し
た状態で曲げ加工を行い、断面変形やしわの発生を抑え
るものが知られている。2. Description of the Related Art Conventionally, a metal core has been used to suppress cross-sectional deformation and wrinkles during bending of a pipe.
There are various types of cored bar.
As described in Japanese Patent Publication No. 35026, a flexible elastic tube which is expandable and contractible in the radial direction and has an elongation preventing member in the axial direction is inserted into the tube, and the tube is bent while an incompressible fluid is pressed into the tube. It is known to perform processing to suppress cross-sectional deformation and wrinkles.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、こうし
た従来のものでは、弾性チューブがクッションとして作
用して断面変形やしわの発生を十分に抑えることができ
ず、また弾性チューブを径方向に伸縮可能で軸方向には
伸長阻止部材を備えた構成としなければならず、構造が
複雑であるという問題があった。However, in such a conventional apparatus, the elastic tube cannot act as a cushion to sufficiently suppress cross-sectional deformation and wrinkles, and the elastic tube can be expanded and contracted in the radial direction. The structure must be provided with an elongation preventing member in the axial direction, and there is a problem that the structure is complicated.
【０００４】本発明の課題は、簡単な構造で有効に断面
変形やしわの発生を抑えることができる管の曲げ加工装
置を提供することにある。An object of the present invention is to provide a pipe bending apparatus capable of effectively suppressing cross-sectional deformation and wrinkles with a simple structure.
【０００５】[0005]
【課題を解決するための手段】本発明はかかる課題を解
決するため、次の手段を取った。即ち、管を曲げ型と締
め型とにより挟持し、前記締め型を前記曲げ型の廻りに
公転させて曲げ加工する曲げ加工装置において、前記管
の曲げ加工箇所を間にして前記管内に挿入される一対の
遮断部材の一方を前記管内に挿入した支持軸に取り付
け、他方を軸方向の離間を規制し径方向には可撓性を有
する連結部材に係止すると共に、前記両遮断部材間に液
体を注入して加圧する加圧機構を備え、加圧状態で曲げ
加工することを特徴とする管の曲げ加工装置がそれであ
る。The present invention employs the following means in order to solve the above problems. That is, in a bending apparatus for clamping a pipe between a bending die and a clamping die and revolving the clamping die around the bending die, the bending die is inserted into the pipe with a bent portion of the pipe therebetween. One of the pair of blocking members is attached to a support shaft inserted into the pipe, and the other is locked in a radially flexible connecting member to regulate axial separation and between the two blocking members. A pipe bending apparatus is provided with a pressurizing mechanism for injecting a liquid and pressurizing the liquid, and performing bending in a pressurized state.
【０００６】また、前記遮断部材は軸方向に相対的に移
動可能な一対の蓋部材と、該一対の蓋部材に挟持された
リング状の弾性部材とを備え、前記相対的な移動により
前記弾性部材を前記管内周に押し付けてもよく、更に、
前記連結部材は一端が前記一方の遮断部材を貫通して抜
け止めされたワイヤと、前記一対の遮断部材間の前記ワ
イヤに通された多数の球とを有し、前記ワイヤの他端を
シリンダで駆動される駆動軸に締結してもよい。The blocking member includes a pair of lid members that are relatively movable in an axial direction, and a ring-shaped elastic member sandwiched between the pair of lid members. A member may be pressed against the inner circumference of the pipe,
The connection member has a wire having one end penetrated through the one blocking member and having a plurality of balls passed through the wire between the pair of blocking members, and the other end of the wire having a cylinder. May be fastened to the drive shaft driven by
【０００７】[0007]
【発明の実施の形態】以下本発明の実施の形態を図面に
基づいて詳細に説明する。図２に示すように、１は装置
本体で、装置本体１の前側には曲げ半径に応じて形成さ
れた曲げ型２が配置されており、この曲げ型２の外周に
は管４の外径に応じた溝６が形成されている。曲げ型２
に対向して締め型８が曲げ型２に接近・離間可能に曲げ
アーム９上に支持されており、締め型８を曲げ型２に接
近させて、曲げ型２の溝６と締め型８に形成された溝１
０とにより、管４を挟持することができるようにされて
いる。Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 2, reference numeral 1 denotes an apparatus main body, and a bending die 2 formed in accordance with a bending radius is disposed at a front side of the apparatus main body 1. Are formed. Bending mold 2
The clamping die 8 is supported on the bending arm 9 so as to be able to approach / separate from the bending die 2 in opposition to the bending die 2. Groove 1 formed
With 0, the tube 4 can be clamped.
【０００８】また、曲げアーム９は曲げ型２の中心Ｃの
廻りに回転駆動され、管４を挟持した状態で締め型８
を、図２の矢印方向に、曲げ型２の廻りに公転させて管
４を曲げ加工できるようにされている。このときの曲げ
反力を受ける圧力型１２が締め型８に隣接して配置され
ている。Further, the bending arm 9 is driven to rotate about the center C of the bending die 2, and the clamping die 8 is held with the tube 4 held therebetween.
Is revolved around the bending mold 2 in the direction of the arrow in FIG. 2 so that the pipe 4 can be bent. The pressure mold 12 receiving the bending reaction force at this time is arranged adjacent to the clamping mold 8.
【０００９】装置本体１上には、管４の軸方向に沿って
一組のレール１４，１５が敷設されており、レール１
４，１５には、移動台１６がレール１４，１５に沿って
移動可能に係合され、図示しない駆動機構によりレール
１４，１５に沿って移動されるように構成されている。A set of rails 14 and 15 are laid on the main body 1 along the axial direction of the pipe 4.
A moving table 16 is movably engaged with the rails 4 and 15 along the rails 14 and 15, and is configured to be moved along the rails 14 and 15 by a drive mechanism (not shown).
【００１０】管４を把持するチャック機構２０が、移動
台１６に搭載されており、チャック機構２０はチャック
本体２２に放射状に移動可能に支持され、供給される圧
力流体により管４に向かって移動する３個の爪２４，２
５（一部のみ図示する）により管４の外周を把持する構
成のものである。A chuck mechanism 20 for gripping the pipe 4 is mounted on the moving table 16, and the chuck mechanism 20 is supported by the chuck body 22 so as to be movable radially, and moves toward the pipe 4 by the supplied pressure fluid. Three claws 24,2
5 (only part of which is shown) holds the outer periphery of the tube 4.
【００１１】チャック本体２２は、図３に示すように、
移動台１６にベアリング２６，２７により支持された回
転軸２８の前端面に固定されている。回転軸２８の後端
には、プーリ３０が固定されており、プーリ３０に掛け
られたベルト３１を介して、移動台１６上に搭載された
モータ３２により回転軸２８を所定角度回転することが
できるように構成されている。The chuck body 22 is, as shown in FIG.
It is fixed to the front end surface of a rotating shaft 28 supported by bearings 26 and 27 on the moving table 16. A pulley 30 is fixed to the rear end of the rotating shaft 28, and the rotating shaft 28 can be rotated by a predetermined angle by a motor 32 mounted on the moving table 16 via a belt 31 wrapped around the pulley 30. It is configured to be able to.
【００１２】一方、装置本体１の後側には、支持部材３
８が立設されており、支持部材３８には、管４と同軸上
に配置された中空の支持軸４０の一端が固定されてい
る。支持軸４０の先端は、回転軸２８を貫通して、管４
の他端側から管４内に挿入されており、支持軸４０の先
端は曲げ型２の中心Ｃ近傍にまで延出されている。支持
軸４０の外径は、管４に挿入できる程度に形成されてい
る。On the other hand, a support member 3
8, and one end of a hollow support shaft 40 arranged coaxially with the pipe 4 is fixed to the support member 38. The tip of the support shaft 40 penetrates the rotation shaft 28 and
Is inserted into the pipe 4 from the other end of the bending shaft 2, and the tip of the support shaft 40 extends to near the center C of the bending die 2. The outer diameter of the support shaft 40 is formed such that it can be inserted into the tube 4.
【００１３】支持軸４０の先端には、第１蓋部材４２が
螺着されており、第１蓋部材４２には軸方向に摺動孔４
４が貫設されている。摺動孔４４には、第２蓋部材４６
が摺動可能に挿入されており、また、第１蓋部材４２と
第２蓋部材４６とによりリング状の弾性部材４８が挟持
されている。A first cover member 42 is screwed to the tip of the support shaft 40, and the first cover member 42 has a sliding hole 4 in the axial direction.
4 are penetrated. A second lid member 46 is provided in the sliding hole 44.
Are slidably inserted, and a ring-shaped elastic member 48 is sandwiched between the first lid member 42 and the second lid member 46.
【００１４】弾性部材４８の外径は、管４の内周に軽く
接触するか、あるいは、管４内周よりも少し小さく形成
されて、管４の内周に容易に挿入できるように形成され
ている。そして、第１蓋部材４２と第２蓋部材４６との
相対的な軸方向の移動により、弾性部材４８が押圧され
ると径方向に膨張し、弾性部材４８が管４の内周に押し
付けられるように形成されている。これら第１蓋部材４
２、第２蓋部材４６、弾性部材４８により第１遮断部材
５０が形成されている。The outer diameter of the elastic member 48 is formed so as to lightly contact the inner periphery of the tube 4 or to be slightly smaller than the inner periphery of the tube 4 so that it can be easily inserted into the inner periphery of the tube 4. ing. When the elastic member 48 is pressed by the relative axial movement of the first lid member 42 and the second lid member 46, the elastic member 48 expands in the radial direction, and the elastic member 48 is pressed against the inner periphery of the tube 4. It is formed as follows. These first lid members 4
2, a first blocking member 50 is formed by the second lid member 46 and the elastic member 48.
【００１５】第１遮断部材５０に対向して、対をなす第
２遮断部材５２が管４内に挿入されており、第１遮断部
材５０と第２遮断部材５２とは、管４の曲げ加工の際に
曲げられる箇所の全長がその間に入る距離に配置されて
いる。そして、第２遮断部材５２は、管４の先端側の第
１蓋部材５４と第１遮断部材５０側の第２蓋部材５６と
を備え、第１蓋部材５４と第２蓋部材５６とには、リン
グ状の弾性部材５８が挟持されている。第１蓋部材５４
と第２蓋部材５６とは、隙間を空けて配置されており、
相対的に移動できるようにされている。この弾性部材５
８も前述した弾性部材４８と同様に形成されている。A pair of second blocking members 52 is inserted into the tube 4 so as to face the first blocking member 50. The first blocking member 50 and the second blocking member 52 are formed by bending the tube 4. Is arranged at a distance such that the entire length of the portion to be bent at the time of being inserted therebetween. The second blocking member 52 includes a first lid member 54 on the distal end side of the tube 4 and a second lid member 56 on the first blocking member 50 side. The first lid member 54 and the second lid member 56 , A ring-shaped elastic member 58 is sandwiched. First lid member 54
And the second lid member 56 are arranged with a gap therebetween,
It is relatively movable. This elastic member 5
8 is formed similarly to the elastic member 48 described above.
【００１６】第１蓋部材５４には、管４先端側から有底
孔６０が形成されており、有底孔６０には弾性を有する
シール部材６２が挿入されている。一端に止め具６４が
かしめられて抜け止めされたワイヤ６６にシール球６８
が通されて、また、ワイヤ６６がシール部材６２、第１
蓋部材５４、第２蓋部材５６を通されて第１遮断部材５
０側に延出されている。A bottomed hole 60 is formed in the first lid member 54 from the distal end side of the tube 4, and an elastic sealing member 62 is inserted into the bottomed hole 60. A stopper ball 64 is crimped on one end and a sealing ball 68
Is passed through and the wire 66 is connected to the sealing member 62, the first
The first blocking member 5 is passed through the lid member 54 and the second lid member 56.
It is extended to the 0 side.
【００１７】ワイヤ６６の他端は、第１遮断部材５０の
第２蓋部材４６を貫通すると共に、第２蓋部材５６と第
２蓋部材４６との間のワイヤ６６には、更に、硬質のゴ
ム球６９が通された後、多数の鋼球７０が隙間なく接触
するようにして通されている。また、ゴム球６９と鋼球
７０とには、第２蓋部材５６と第２蓋部材４６との間の
全域にわたってウレタン製の弾性管７２が被せられてい
る。The other end of the wire 66 penetrates the second cover member 46 of the first blocking member 50, and the wire 66 between the second cover member 56 and the second cover member 46 further includes a harder wire. After the rubber ball 69 is passed, a number of steel balls 70 are passed so as to contact without any gap. The rubber ball 69 and the steel ball 70 are covered with an elastic tube 72 made of urethane over the entire area between the second lid member 56 and the second lid member 46.
【００１８】第２蓋部材４６には、ワイヤ６６と同軸上
に支持軸４０側から挿入孔７４が形成されており、挿入
孔７４には中空の駆動軸７６が摺動可能に挿入されると
共に、Ｏリング７８により漏れ止めが図られている。駆
動軸７６の先端には、ピン８０が径方向に挿入されてお
り、このピン８０にワイヤ６６が巻掛けられると共に、
止め具８２がかしめられて、ワイヤ６６が締結されてい
る。尚、本実施例では、止め具６４、ワイヤ６６、シー
ル球６８、シール部材６２、ゴム球６９、鋼球７０、弾
性管７２、止め具８２により連結部材８３が構成されて
いる。An insertion hole 74 is formed in the second lid member 46 coaxially with the wire 66 from the support shaft 40 side, and a hollow drive shaft 76 is slidably inserted into the insertion hole 74. , O-ring 78 prevents leakage. At the tip of the drive shaft 76, a pin 80 is inserted in a radial direction, and a wire 66 is wound around the pin 80,
The stopper 82 is swaged, and the wire 66 is fastened. In this embodiment, the connecting member 83 is constituted by the stopper 64, the wire 66, the seal ball 68, the seal member 62, the rubber ball 69, the steel ball 70, the elastic tube 72, and the stopper 82.
【００１９】また、第２蓋部材４６には、第１遮断部材
５０と第２遮断部材とにより区画された作用室Ａと、挿
入孔７４と、を連通する供給孔８４が下方に向かって貫
通形成されており、第２蓋部材４６の上側には、中空の
支持軸４０と駆動軸７６との間の通路４０ａと作用室Ａ
とを連通した排気孔８６が形成されている。Further, a supply hole 84 communicating the working chamber A defined by the first blocking member 50 and the second blocking member and the insertion hole 74 penetrates through the second lid member 46 downward. On the upper side of the second lid member 46, the passage 40a between the hollow support shaft 40 and the drive shaft 76 and the working chamber A
And an exhaust hole 86 which communicates with the exhaust port 86 is formed.
【００２０】駆動軸７６の後端は、支持部材３８に設け
られたシリンダ８８に連結されており、支持部材３８に
は支持軸４０の通路４０ａに連通した接続孔９０が形成
されており、接続孔９０は所定圧力の液体を供給する圧
力源９２の吸入側に接続されている。また、圧力源９２
の吐出側は、中空の駆動軸７６内の通路７６ａに接続さ
れている。尚、本実施例では、支持軸４０、駆動軸７
６、挿入孔７４、供給孔８４、排気孔８６、接続孔９
０、圧力源９２により加圧機構９４が形成されている。
圧力源９２から供給される液体は、作動油、水等の非圧
縮性の流体であればよい。The rear end of the drive shaft 76 is connected to a cylinder 88 provided on the support member 38. The support member 38 has a connection hole 90 communicating with the passage 40a of the support shaft 40. The hole 90 is connected to the suction side of a pressure source 92 that supplies a liquid having a predetermined pressure. The pressure source 92
Is connected to a passage 76 a in a hollow drive shaft 76. In this embodiment, the support shaft 40 and the drive shaft 7
6, insertion hole 74, supply hole 84, exhaust hole 86, connection hole 9
A pressure mechanism 94 is formed by the pressure source 92.
The liquid supplied from the pressure source 92 may be an incompressible fluid such as hydraulic oil or water.
【００２１】次に、前述した本実施例の管の曲げ加工装
置の作動について説明する。まず、管４内に第２遮断部
材５２と第１遮断部材５０とを入れ、管４を支持軸４０
に沿って挿入し、管４の端を回転軸２８に突き当てる。
その際、第２遮断部材５２は、弾性管７２に支持軸４０
と一直線上に支持されているので、第２遮断部材５２を
管４に容易に入れることができる。Next, the operation of the above-described pipe bending apparatus of this embodiment will be described. First, the second blocking member 52 and the first blocking member 50 are put into the tube 4 and the tube 4 is connected to the support shaft 40.
Along with the end of the tube 4 against the rotating shaft 28.
At this time, the second blocking member 52 attaches the support shaft 40 to the elastic tube 72.
And the second blocking member 52 can be easily inserted into the tube 4.
【００２２】移動台１６がレール１４，１５に沿って移
動され、管４を曲げ型２と締め型８との間に供給する。
そして、管４の曲げ加工箇所を曲げ型２に応じた位置に
まで移動した後、移動台１６の移動を停止し、チャック
機構２０に圧力流体を供給して、爪２４，２５を管４に
向かって移動させる。この爪２４，２５により管４の外
周が押圧され、管４が爪２４，２５と支持軸４０とによ
り把持される。A carriage 16 is moved along the rails 14 and 15 to feed the tube 4 between the bending mold 2 and the clamping mold 8.
Then, after moving the bent portion of the pipe 4 to a position corresponding to the bending die 2, the movement of the moving table 16 is stopped, and a pressurized fluid is supplied to the chuck mechanism 20, and the claws 24 and 25 are connected to the pipe 4. Move toward. The outer circumference of the tube 4 is pressed by the claws 24 and 25, and the tube 4 is gripped by the claws 24 and 25 and the support shaft 40.
【００２３】次に、シリンダ８８を駆動して駆動軸７６
を図３の右方向に移動する。これにより、ワイヤ６６が
引かれて、止め具６４、シール球６８、シール部材６２
を介して第１蓋部材５４が第２蓋部材５６に接近する方
向に移動される。更に、第１蓋部材５４、弾性部材５
８、第２蓋部材５６、ゴム球６９、多数の鋼球７０を介
して、第２蓋部材４６が第１蓋部材４２に接近する方向
に移動される。Next, the cylinder 88 is driven to drive the drive shaft 76.
Is moved rightward in FIG. As a result, the wire 66 is pulled, and the stopper 64, the sealing ball 68, the sealing member 62
The first lid member 54 is moved in a direction approaching the second lid member 56 via the. Further, the first lid member 54, the elastic member 5
8, the second cover member 46 is moved in a direction approaching the first cover member 42 via the second cover member 56, the rubber balls 69, and the many steel balls 70.
【００２４】よって、両弾性部材４８，５８が軸方向に
押圧されて、径方向に膨張され、管４の内周に押し付け
られる。これにより、第１遮断部材５０と第２遮断部材
５２との間の作用室Ａが遮断され、圧力源９２からの液
体が駆動軸７６の通路７６ａ、挿入孔７４を介して供給
孔８４から吐出される。Accordingly, the two elastic members 48 and 58 are pressed in the axial direction, expanded in the radial direction, and pressed against the inner periphery of the tube 4. Thereby, the working chamber A between the first blocking member 50 and the second blocking member 52 is blocked, and the liquid from the pressure source 92 is discharged from the supply hole 84 via the passage 76 a of the drive shaft 76 and the insertion hole 74. Is done.
【００２５】そして、第１遮断部材５０と第２遮断部材
５２との間の空気は、排気孔８６、支持軸４０の通路４
０ａ、接続孔９０を介して排気される。第１遮断部材５
０と第２遮断部材５２との間の作用室Ａに液体が充満さ
れ、所定圧まで加圧される。この液体の圧力の作用を両
第２蓋部材４６，５６が受けて、両第１蓋部材４２，５
４に接近る方向に移動して、両弾性部材４８，５８を押
圧して更に管４の内周に押し付けて、漏れ止めをより確
実なものとする。また、同時にゴム球６９とシール球６
８及びシール部材６２とにより、ワイヤ６６と第２蓋部
材５６、第１蓋部材５４との間の漏れ止めが行われる。The air between the first blocking member 50 and the second blocking member 52 flows through the exhaust hole 86 and the passage 4 of the support shaft 40.
0a, exhausted through the connection hole 90. First blocking member 5
The working chamber A between the zero and the second blocking member 52 is filled with the liquid and pressurized to a predetermined pressure. The second lid members 46 and 56 receive the action of the pressure of the liquid, and the first lid members 42 and 5 receive the liquid.
4 to push the two elastic members 48 and 58 and further press them against the inner periphery of the tube 4 to further ensure the prevention of leakage. At the same time, the rubber ball 69 and the seal ball 6
The seal between the wire 66 and the second lid member 56 and the first lid member 54 prevents leakage between the wire 66 and the first lid member 54.
【００２６】続いて、締め型８を曲げ型２に向かって移
動させて、曲げ型２と締め型８とにより管４を挟持する
と共に、圧力型１２を管４の外周に接触させる。曲げア
ーム９を回転させて、締め型８を曲げ型２の廻りに公転
させ、図４に示すように、管４を曲げ型２の形状に応じ
て曲げ加工する。連結部材８３は、ワイヤ６６が第１遮
断部材５０と第２遮断部材５２とが離間しようとするの
を阻止し、曲げに応じて鋼球７０によりゴム球６９が圧
縮されつつ、ワイヤ６６、弾性管７２が曲がる。Subsequently, the clamping die 8 is moved toward the bending die 2, and the tube 4 is held between the bending die 2 and the clamping die 8, and the pressure die 12 is brought into contact with the outer periphery of the tube 4. By rotating the bending arm 9, the clamping die 8 revolves around the bending die 2, and the pipe 4 is bent according to the shape of the bending die 2 as shown in FIG. The connecting member 83 prevents the wire 66 from separating the first blocking member 50 and the second blocking member 52 from each other. The rubber ball 69 is compressed by the steel ball 70 in response to bending, and the wire 66 Tube 72 bends.
【００２７】その際、圧力源９２により管４の内周には
所定圧が加えられると共に所定圧が維持され、曲げ加工
箇所の全域にわたって加圧される。よって、管４には断
面を円形に維持しようとする作用力が働き、また、作用
室Ａには、非圧縮性である液体が充満しているので、作
用室Ａの容積の減少を阻止しようとする作用力も働くの
で、管４の断面変形やしわの発生が曲げ加工箇所の全域
にわたって防止される。このように、単純な構造によ
り、管４の断面変形やしわの発生を押えながら曲げ加工
できる。At this time, a predetermined pressure is applied to the inner periphery of the pipe 4 by the pressure source 92 and the predetermined pressure is maintained, and the pipe 4 is pressurized over the entire area of the bending portion. Therefore, the tube 4 is acted on by a force acting to maintain a circular cross section, and the working chamber A is filled with a liquid which is incompressible, so that the volume of the working chamber A is prevented from decreasing. Therefore, the deformation of the pipe 4 and the generation of wrinkles are prevented over the entire area of the bent portion. As described above, with a simple structure, the pipe 4 can be bent while suppressing the cross-sectional deformation and the generation of wrinkles.
【００２８】締め型８を曲げ型２の廻りに所定角度公転
させて曲げ加工した後、締め型８を曲げ型２から離間し
てから逆方向に公転させて元の位置に戻す。そして、シ
リンダ８８を駆動して、駆動軸７６を図３の左側に移動
して、ワイヤ６６を緩めると共に、圧力源９２による加
圧を停止する。After the clamping die 8 is revolved around the bending die 2 by a predetermined angle and bent, the clamping die 8 is separated from the bending die 2 and revolved in the opposite direction to return to the original position. Then, the cylinder 88 is driven to move the drive shaft 76 to the left side in FIG. 3 to loosen the wire 66 and stop pressurization by the pressure source 92.
【００２９】よって、両弾性部材４８，５８と管４の内
周とが摺動できるようになり、移動台１６を移動して管
４の次の曲げ加工箇所を曲げ型２に応じた位置に移動す
る。その際、曲げ方向が異なる場合には、モータ３２を
駆動して、ベルト３１、プーリ３０、回転軸２８、チャ
ック機構２０を介して管４を回転させる。そして、ワイ
ヤ６６を引くと共に、圧力源９２から所定圧の液体を供
給して、再び前述したように、締め型８と曲げ型２とに
より管４を挟持して曲げ加工する。Therefore, the two elastic members 48 and 58 and the inner periphery of the tube 4 can slide, and the movable table 16 is moved to move the next bent portion of the tube 4 to a position corresponding to the bending die 2. Moving. At this time, if the bending directions are different, the motor 32 is driven to rotate the tube 4 via the belt 31, the pulley 30, the rotating shaft 28, and the chuck mechanism 20. Then, the wire 66 is pulled, a liquid of a predetermined pressure is supplied from the pressure source 92, and the pipe 4 is clamped and bent by the clamping die 8 and the bending die 2 again as described above.
【００３０】次に、前述した実施例と異なる第２実施例
の管の曲げ加工装置について、図５によって説明する。
尚、前述した実施例と同じ部材については同一番号を付
して詳細な説明を省略する。支持軸４０の先端には、第
１遮断部材１００が螺着されており、第１遮断部材１０
０の外周には、Ｏリング１０２が嵌着されて管４内周と
の間の漏れ止めが図られている。第１遮断部材１００と
曲げ加工箇所を間にして、第２遮断部材１０４が配置さ
れており、第２遮断部材１０４の外周には、Ｏリング１
０６が嵌着されて管４内周との間の漏れ止めが図られて
いる。Next, a pipe bending apparatus according to a second embodiment different from the above-described embodiment will be described with reference to FIG.
The same members as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. A first blocking member 100 is screwed to the tip of the support shaft 40, and the first blocking member 10
An O-ring 102 is fitted around the outer periphery of the tube 0 to prevent leakage from the inner periphery of the tube 4. A second blocking member 104 is disposed between the first blocking member 100 and the bent portion, and an O-ring 1 is provided around the outer periphery of the second blocking member 104.
06 is fitted to prevent leakage between the tube 4 and the inner periphery.
【００３１】第２遮断部材１０４には、管４の先端側か
らねじ孔１０８、ねじ孔１０８に連接した収納孔１１０
が形成されており、ワイヤ６６の一端の止め具６４が収
納孔１１０に収納され、ワイヤ６６は第２遮断部材１０
４を貫通して第１遮断部材１００側に延出されている。
ねじ孔１０８には、プラグ１１２が螺入されて、漏れ止
めが図られている。The second blocking member 104 has a screw hole 108 from the distal end side of the tube 4 and a storage hole 110 connected to the screw hole 108.
The stopper 64 at one end of the wire 66 is housed in the housing hole 110, and the wire 66 is connected to the second blocking member 10
4 to the first blocking member 100 side.
A plug 112 is screwed into the screw hole 108 to prevent leakage.
【００３２】第１遮断部材１００には、支持軸４０側か
ら挿入孔１１４、挿入孔１１４に連接した収納孔１１６
が形成されており、挿入孔１１４には中空の駆動軸１１
８が挿入されている。この駆動軸１１８は支持部材３８
に固定されており、軸方向に移動しない。The first blocking member 100 has an insertion hole 114 from the support shaft 40 side, and a storage hole 116 connected to the insertion hole 114.
Are formed, and the hollow drive shaft 11 is inserted into the insertion hole 114.
8 has been inserted. This drive shaft 118 is
And does not move in the axial direction.
【００３３】そして、ワイヤ６６の他端は、第１遮断部
材１００を貫通されて、止め具１２０がかしめにより取
り付けられて、収納孔１１６に収納されている。第１遮
断部材１００と第２遮断部材１０４との間のワイヤ６６
には弾性管７２が被せられている。この弾性管７２は、
ウレタン等のものでもよく、第２遮断部材１０４を支持
軸４０と同軸上に支持できるものであれば、コイルスプ
リング等であっても実施可能である。The other end of the wire 66 penetrates the first blocking member 100, and a stopper 120 is attached by caulking, and is housed in the housing hole 116. Wire 66 between first blocking member 100 and second blocking member 104
Is covered with an elastic tube 72. This elastic tube 72
A material such as urethane may be used, and a coil spring or the like may be used as long as the second blocking member 104 can be supported coaxially with the support shaft 40.
【００３４】この第２実施例では、第２遮断部材１０４
が弾性管７２により支持軸４０と同軸上に支持されるの
で、管４に第２遮断部材１０４を容易に挿入できる。次
に、第１遮断部材１００を挿入し、圧力源９２から供給
される液体は、駆動軸１１８の通路１１８ａから、収納
孔１１６、供給孔８４を介して第１遮断部材１００と第
２遮断部材１０４との間の作用室Ａ内に供給される。そ
して、作用室Ａ内の空気は、排気孔８６、支持軸４０の
通路４０ａを通り、外部に排気される。In the second embodiment, the second blocking member 104
Is supported coaxially with the support shaft 40 by the elastic tube 72, so that the second blocking member 104 can be easily inserted into the tube 4. Next, the first blocking member 100 is inserted, and the liquid supplied from the pressure source 92 flows from the passage 118 a of the drive shaft 118 through the storage hole 116 and the supply hole 84 to the first blocking member 100 and the second blocking member. The pressure is supplied into the working chamber A between the first and second working chambers 104. Then, the air in the working chamber A is exhausted to the outside through the exhaust hole 86 and the passage 40a of the support shaft 40.
【００３５】圧力源９２からの所定圧の液体により、管
４を内周から加圧し、この状態で前述した実施例と同様
に、管４を曲げ型２と締め型８とにより挟持して、締め
型８を曲げ型２の廻りに公転して曲げ加工する。前述し
た実施例に比べて、管４の肉厚が薄く、圧力源９２から
供給される液体の所定圧が低くてもよい場合や、Ｏリン
グ１０２，１０６の耐久性等が問題とならない場合に
は、この第２実施例により、管４の断面変形やしわの発
生をより簡単な構造で防止できる。The tube 4 is pressurized from the inner periphery with a liquid having a predetermined pressure from the pressure source 92, and in this state, the tube 4 is sandwiched between the bending mold 2 and the clamping mold 8 in the same manner as in the above-described embodiment. The clamping die 8 revolves around the bending die 2 and is bent. In the case where the wall thickness of the tube 4 is thinner than in the above-described embodiment and the predetermined pressure of the liquid supplied from the pressure source 92 may be low, or the durability of the O-rings 102 and 106 does not matter. According to the second embodiment, the cross-sectional deformation and wrinkling of the tube 4 can be prevented with a simpler structure.
【００３６】以上本発明はこの様な実施例に何等限定さ
れるものではなく、本発明の要旨を逸脱しない範囲にお
いて種々なる態様で実施し得る。As described above, the present invention is not limited to such an embodiment, and can be implemented in various modes without departing from the gist of the present invention.
【００３７】[0037]
【発明の効果】以上詳述したように本発明の管の曲げ加
工装置は、管を内周から、しかも管の曲げ加工箇所の全
域にわたって加圧した状態で曲げ加工することができる
ので、曲げ加工時の管の断面変形やしわの発生を有効に
防止できる。また、遮断部材が一対の蓋部材とリング状
の弾性部材とを備えることにより、供給される液体の圧
力を利用して漏れ止めを図ることもできる。更に、連結
部材にワイヤを用いたものでは、ワイヤをシリンダによ
り引くことによりリング状の弾性部材を押圧して漏れ止
めを図ることができる。As described in detail above, the pipe bending apparatus according to the present invention can bend the pipe from the inner circumference and in a state where the pipe is pressed over the entire area of the pipe bending. The cross-sectional deformation and wrinkling of the pipe during processing can be effectively prevented. In addition, since the blocking member includes the pair of lid members and the ring-shaped elastic member, it is possible to prevent leakage using the pressure of the supplied liquid. Further, in the case of using a wire for the connecting member, the ring-shaped elastic member can be pressed by pulling the wire by the cylinder to prevent leakage.
【図１】本発明の一実施例としての管の曲げ加工装置の
要部拡大断面図である。FIG. 1 is an enlarged sectional view of a main part of a pipe bending apparatus as one embodiment of the present invention.
【図２】本実施例の管の曲げ加工装置の全体斜視図であ
る。FIG. 2 is an overall perspective view of the pipe bending apparatus of the present embodiment.
【図３】本実施例の管の曲げ加工装置の概略構成図であ
る。FIG. 3 is a schematic configuration diagram of a pipe bending apparatus of the present embodiment.
【図４】本実施例の締め型を曲げ型の廻りに公転して曲
げ加工している状態の拡大断面図である。FIG. 4 is an enlarged cross-sectional view showing a state in which the clamping die of the present embodiment is revolved around a bending die and bent.
【図５】第２実施例の管の曲げ加工装置の要部拡大断面
図である。FIG. 5 is an enlarged sectional view of a main part of a pipe bending apparatus according to a second embodiment.
１…装置本体 ２…曲げ型 ４…管 ８…締め型 １２…圧力型 ４０…支持軸 ４２，５４…第１蓋部材 ４６，５６…第２蓋部材 ４８，５８…弾性部材 ５０，１００…第１遮断部材 ５２，１０４…第２遮断部材 ６６…ワイヤ ７２…弾性管 ７６，１１８…駆動軸 ８３…連結部材 ９２…圧力源 ９４…加圧機構 DESCRIPTION OF SYMBOLS 1 ... Device main body 2 ... Bending mold 4 ... Pipe 8 ... Clamping mold 12 ... Pressure mold 40 ... Support shaft 42, 54 ... First lid member 46, 56 ... Second lid member 48, 58 ... Elastic member 50, 100 ... First 1 blocking member 52, 104 ... second blocking member 66 ... wire 72 ... elastic tube 76, 118 ... drive shaft 83 ... connecting member 92 ... pressure source 94 ... pressurizing mechanism
Claims (3)
記締め型を前記曲げ型の廻りに公転させて曲げ加工する
曲げ加工装置において、 前記管の曲げ加工箇所を間にして前記管内に挿入される
一対の遮断部材の一方を前記管内に挿入した支持軸に取
り付け、他方を軸方向の離間を規制し径方向には可撓性
を有する連結部材に係止すると共に、前記両遮断部材間
に液体を注入して加圧する加圧機構を備え、加圧状態で
曲げ加工することを特徴とする管の曲げ加工装置。1. A bending device for clamping a pipe between a bending die and a clamping die, and revolving the clamping die around the bending die to perform a bending process. One of the pair of blocking members inserted into the pipe is attached to the support shaft inserted into the pipe, the other is restricted in the axial direction, and is locked to the connecting member having flexibility in the radial direction. An apparatus for bending a pipe, comprising a pressurizing mechanism for injecting a liquid between members and pressurizing the same, and performing bending in a pressurized state.
能な一対の蓋部材と、該一対の蓋部材に挟持されたリン
グ状の弾性部材とを備え、前記相対的な移動により前記
弾性部材を前記管内周に押し付けることを特徴とする請
求項１記載の管の曲げ加工装置。The blocking member includes a pair of lid members that are relatively movable in an axial direction, and a ring-shaped elastic member sandwiched between the pair of lid members. The pipe bending apparatus according to claim 1, wherein a member is pressed against the inner circumference of the pipe.
材を貫通して抜け止めされたワイヤと、前記一対の遮断
部材間の前記ワイヤに通された多数の球とを有し、前記
ワイヤの他端をシリンダで駆動される駆動軸に締結した
ことを特徴とする請求項２記載の管の曲げ加工装置。3. The connecting member has a wire whose one end penetrates the one blocking member and is prevented from coming off, and a number of balls passed through the wire between the pair of blocking members, wherein the wire 3. The pipe bending apparatus according to claim 2, wherein the other end of the pipe is fastened to a drive shaft driven by a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22259496A JP3773307B2 (en) | 1996-08-23 | 1996-08-23 | Pipe bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22259496A JP3773307B2 (en) | 1996-08-23 | 1996-08-23 | Pipe bending machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1058051A true JPH1058051A (en) | 1998-03-03 |
| JP3773307B2 JP3773307B2 (en) | 2006-05-10 |
Family
ID=16784924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22259496A Expired - Fee Related JP3773307B2 (en) | 1996-08-23 | 1996-08-23 | Pipe bending machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3773307B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004105975A1 (en) * | 2003-03-24 | 2004-12-09 | Yamaha Motor Co., Ltd. | Method and device for bending material tube |
| CN100346895C (en) * | 2003-03-24 | 2007-11-07 | 雅马哈发动机株式会社 | Method and device for bending stock tube |
| JP2012135786A (en) * | 2010-12-27 | 2012-07-19 | Nisshin Steel Co Ltd | Method for bending steel pipe |
| CN109248944A (en) * | 2018-11-27 | 2019-01-22 | 安徽德系重工科技有限公司 | A kind of CNC tube bending machine flexible clamping device |
| US10537926B2 (en) | 2015-03-02 | 2020-01-21 | Opton Co., Ltd | Bending apparatus |
| CN114210789A (en) * | 2021-11-05 | 2022-03-22 | 佛山市永恒液压机械有限公司 | Pipe fitting bending forming process |
| CN118010507A (en) * | 2024-04-08 | 2024-05-10 | 江苏斯维曼智能科技有限公司 | Clothing elasticity test machine based on stretching |
| CN118190651A (en) * | 2024-05-17 | 2024-06-14 | 常州普江不锈钢管有限公司 | Pressure-resistant testing equipment for batch water injection of seamless stainless steel pipes |
-
1996
- 1996-08-23 JP JP22259496A patent/JP3773307B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004105975A1 (en) * | 2003-03-24 | 2004-12-09 | Yamaha Motor Co., Ltd. | Method and device for bending material tube |
| US7155952B2 (en) * | 2003-03-24 | 2007-01-02 | Yamaha Hatsudoki Kabushiki Kaisha | Device and method for forming piping components |
| CN100346895C (en) * | 2003-03-24 | 2007-11-07 | 雅马哈发动机株式会社 | Method and device for bending stock tube |
| JP2012135786A (en) * | 2010-12-27 | 2012-07-19 | Nisshin Steel Co Ltd | Method for bending steel pipe |
| US10537926B2 (en) | 2015-03-02 | 2020-01-21 | Opton Co., Ltd | Bending apparatus |
| CN109248944A (en) * | 2018-11-27 | 2019-01-22 | 安徽德系重工科技有限公司 | A kind of CNC tube bending machine flexible clamping device |
| CN109248944B (en) * | 2018-11-27 | 2023-08-11 | 安徽德系重工科技有限公司 | Elastic clamping device of numerical control pipe bending machine |
| CN114210789A (en) * | 2021-11-05 | 2022-03-22 | 佛山市永恒液压机械有限公司 | Pipe fitting bending forming process |
| CN118010507A (en) * | 2024-04-08 | 2024-05-10 | 江苏斯维曼智能科技有限公司 | Clothing elasticity test machine based on stretching |
| CN118190651A (en) * | 2024-05-17 | 2024-06-14 | 常州普江不锈钢管有限公司 | Pressure-resistant testing equipment for batch water injection of seamless stainless steel pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3773307B2 (en) | 2006-05-10 |
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