JP2005046880A - Die for forming end of piping - Google Patents

Die for forming end of piping Download PDF

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Publication number
JP2005046880A
JP2005046880A JP2003281924A JP2003281924A JP2005046880A JP 2005046880 A JP2005046880 A JP 2005046880A JP 2003281924 A JP2003281924 A JP 2003281924A JP 2003281924 A JP2003281924 A JP 2003281924A JP 2005046880 A JP2005046880 A JP 2005046880A
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pipe
diameter
die
mold
piping
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Hiromi Takasaki
浩美 高崎
Yoshikazu Takamatsu
由和 高松
Koichi Ozawa
晃一 小沢
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Calsonic Kansei Corp
カルソニックカンセイ株式会社
Ootsuka:Kk
株式会社オーツカ
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Priority to JP2003281924A priority Critical patent/JP2005046880A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a die for forming the end of piping with which the yield rate can be improved by preventing deformation when the piping is released from the die. <P>SOLUTION: This die enters the end part of the piping 1 which is plastically deformable, and the end part is formed into a prescribed shape by pressing while sliding in the direction contrary to the end part to the piping 1. Recessed parts 68 for releasing pressing oil in a sliding contact part with the piping 1 when pressing is provided to the die. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、配管の端部を所定形状に成形する配管端末成形用金型に関する。   The present invention relates to a pipe terminal molding die for molding an end of a pipe into a predetermined shape.
金属等の塑性変形可能な素材から成る配管の端部を所定形状に成形するものとして、配管の端部に入り込み、配管に対して前記端部と背反する方向に摺動しつつ前記端部をプレスして所定形状に成形する金型が用いられている。   As the end of the pipe made of a plastically deformable material such as metal is formed into a predetermined shape, the end enters the end of the pipe and slides in the direction opposite to the end with respect to the pipe. A mold that is pressed and molded into a predetermined shape is used.
この種の金型では、プレス時に配管との摺接面のプレス油が抜けないと、配管の内面に無理な力がかかって配管が変形したり、金型と配管とが強く密着するため離型方向に摺動する際に配管が金型に引っ張られて変形してしまうことがあった。   In this type of mold, if the press oil on the sliding contact surface with the pipe does not come off during pressing, the pipe will be deformed by excessive force on the inner surface of the pipe, or the mold and the pipe will be in close contact with each other. When sliding in the mold direction, the pipe may be pulled by the mold and deformed.
解決しようとする問題点は、プレス時に金型と配管との摺接面のプレス油が抜けない点である。   The problem to be solved is that the press oil on the slidable contact surface between the mold and the pipe does not come off during pressing.
本発明の配管端末成形用金型は、プレス時に配管との摺接面のプレス油を逃がすための凹部を設けたことを主要な特徴とする。   The main feature of the die for forming a pipe end of the present invention is that a concave portion for releasing press oil on the sliding contact surface with the pipe is provided during pressing.
本発明では、プレス時に配管との摺接面のプレス油が凹部に逃げるため、配管の内面に無理な力がかからない。また、プレス油が凹部に逃げることで配管との密着力が小さくなるため、離型方向に摺動する際に配管が引っ張られることがない。したがって、配管の変形を防止して歩留まり率が向上するという利点が有る。   In the present invention, the pressing oil on the sliding contact surface with the pipe escapes into the recess during pressing, so that an excessive force is not applied to the inner surface of the pipe. In addition, since the press oil escapes to the concave portion, the adhesive force with the pipe is reduced, so that the pipe is not pulled when sliding in the mold release direction. Therefore, there is an advantage that the yield rate is improved by preventing deformation of the piping.
以下、本発明の一実施形態を図面に基づいて説明する。図1は本発明の一実施形態である全長成形用金型を含むプレス金型及び配管クランプ装置の斜視図、図2〜図5は配管端部の加工工程を示しており、図2は増厚工程の説明図、図3は第1拡径工程の説明図、図4は第2拡径工程の説明図、図5は全長成形工程の説明図、図6は全長成形用金型の要部斜視図、図7は実施形態の金型により製造されたフランジ付配管継手の要部断面図である。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a press mold including a full-length molding mold and a pipe clamp device according to an embodiment of the present invention, FIGS. 2 to 5 show a process step of a pipe end, and FIG. 3 is an explanatory diagram of the first diameter expansion process, FIG. 4 is an explanatory diagram of the second diameter expansion process, FIG. 5 is an explanatory diagram of the full length molding process, and FIG. FIG. 7 is a fragmentary perspective view, and FIG. 7 is a sectional view of a principal part of a flanged pipe joint manufactured by the mold according to the embodiment.
本実施形態の金型で製造されるフランジ付配管継手は、例えばフレキシブルホースを車両用空調装置のコンプレッサ等に接続するために用いられるもので、図7に示すように、配管挿通孔3を有する金属製のフランジ2と、配管挿通孔3に端部が突出するように挿通固定されると共に端部が拡径された金属製の配管1とを備えており、配管1の端部をコンプレッサに形成された接続口に挿入すると共にフランジ2を熱交換器にボルトで固定することにより熱交換器に接続される。   The flanged pipe joint manufactured by the mold of the present embodiment is used, for example, to connect a flexible hose to a compressor of a vehicle air conditioner, and has a pipe insertion hole 3 as shown in FIG. A metal flange 2 and a metal pipe 1 that is inserted and fixed so that the end protrudes into the pipe insertion hole 3 and whose end is expanded in diameter are provided. The end of the pipe 1 is used as a compressor. The flange 2 is connected to the heat exchanger by being inserted into the formed connection port and fixed to the heat exchanger with bolts.
図1に示すように、本実施形態では、所定位置に設置された配管クランプ装置11で配管1をクランプし、配管1の軸方向に対向するように配されたプレス金型21を配管1に向かって移動させてプレス加工を行う。   As shown in FIG. 1, in this embodiment, a pipe 1 is clamped by a pipe clamp device 11 installed at a predetermined position, and a press die 21 arranged so as to face the axial direction of the pipe 1 is attached to the pipe 1. It is moved toward the press.
配管クランプ装置11は、半割れ円筒面を有すると共に接離可能な二つの部材12、13から構成され、両者を空気圧やねじ締め等により相互に押圧して二つの円筒面により配管1をクランプするものである。   The pipe clamp device 11 is composed of two members 12 and 13 that have a half-cracked cylindrical surface and can be contacted and separated. The pipe 1 is clamped by the two cylindrical surfaces by pressing them together by air pressure or screw tightening. Is.
配管1の端部に対して行うプレス加工は、増厚工程、第1拡径工程、第2拡径工程、及び全長成形工程の四工程からなっており、プレス金型21には、増厚金型31、第1拡径金型41、第2拡径金型51、及び全長成形用金型61が上下方向に間隔をおいて設けられている。一工程が終了する毎にプレス金型21が上方に所定ピッチ移動して次工程の金型が配管1に対向するようになっている。   The press work performed on the end portion of the pipe 1 is composed of four steps including a thickening step, a first diameter expanding step, a second diameter expanding step, and a full length forming step. A mold 31, a first diameter-expanding mold 41, a second diameter-expanding mold 51, and a full-length molding mold 61 are provided at intervals in the vertical direction. Each time one process is completed, the press mold 21 is moved upward by a predetermined pitch so that the mold in the next process faces the pipe 1.
次に、図6のフランジ付配管継手の製造手順を図2〜図6を参照しながら詳細に説明する。   Next, the manufacturing procedure of the flanged pipe joint of FIG. 6 will be described in detail with reference to FIGS.
まず、端部が拡径されていない配管1を配管クランプ装置11により保持固定する。そして、フランジ2の配管挿通孔3を配管1の端部に嵌合してフランジ2をクランプ装置11に付き当たるまで押し込む。なお、あらかじめ配管1の端部にフランジ2をセットしておいてから配管1をクランプするようにしてもよい。   First, the pipe 1 whose end is not expanded is held and fixed by the pipe clamp device 11. Then, the pipe insertion hole 3 of the flange 2 is fitted to the end of the pipe 1 and the flange 2 is pushed in until it comes into contact with the clamp device 11. Note that the pipe 1 may be clamped after the flange 2 is set in advance at the end of the pipe 1.
そして、プレス金型21の増厚金型31を配管1に対向させ、プレス装置を駆動してプレス金型21を配管1に向かって移動させる。図2(a)に示すように、増厚金型31は、多段円柱状の押金32と、この押金32に同軸状かつ軸方向に移動自在に組み合わされた円筒状の外径型33と、この外径型33を押金32に対して軸方向先端側に付勢するバネ34とから成っている。   Then, the thickening die 31 of the press die 21 is opposed to the pipe 1 and the press device is driven to move the press die 21 toward the pipe 1. As shown in FIG. 2 (a), the thickening die 31 includes a multistage columnar presser 32, and a cylindrical outer diameter die 33 that is coaxially and axially movable combined with the presser 32. The outer diameter die 33 is composed of a spring 34 that urges the outer die 33 toward the tip end in the axial direction.
押金32は、配管1内部に摺動自在に入り込む直軸部35と、これよりも大径で配管1の端面を押圧する押圧部36と、これよりも大径のストッパ部37とを有している。外径型33は押圧部36の外周部に摺動自在に嵌合されており、その内径は配管1の外径よりも大きくなっている。   The presser 32 has a straight shaft portion 35 that slidably enters the inside of the pipe 1, a pressing portion 36 that presses the end surface of the pipe 1 with a larger diameter than this, and a stopper portion 37 that has a larger diameter than this. ing. The outer diameter mold 33 is slidably fitted to the outer peripheral portion of the pressing portion 36, and the inner diameter thereof is larger than the outer diameter of the pipe 1.
増厚金型31がプレス方向に移動することにより、まず押金32の直軸部35が配管1の内部に入り込み、次いで外径型33の先端面がフランジ2に当接する。これによって外径型33の移動が停止し、押金32のみが移動し、バネ34が圧縮される。そして、押圧部36が配管1の端面に当接して配管1の端部を軸方向に圧縮する。   When the thickening die 31 moves in the pressing direction, first, the straight shaft portion 35 of the pressing die 32 enters the inside of the pipe 1, and then the tip surface of the outer diameter die 33 comes into contact with the flange 2. As a result, the movement of the outer diameter mold 33 stops, only the presser 32 moves, and the spring 34 is compressed. And the press part 36 contact | abuts to the end surface of the piping 1, and compresses the edge part of the piping 1 to an axial direction.
このとき、配管1の端部の内面には直軸部35が当接しているため、配管1の端部は径が小さくなる方向に変形することはなく、配管1の端部の外面と外径型33の内面との間の環状の隙間38を埋めるように変形する。したがって、図2(b)に示すように、配管1の端部の肉厚が増厚することになる。ストッパ部37が外径型33の端面に当接すると押金32の移動が停止する。そして、プレス金型21がプレス方向と逆方向に移動して増厚金型31が配管1から離脱する。   At this time, since the straight shaft portion 35 is in contact with the inner surface of the end portion of the pipe 1, the end portion of the pipe 1 is not deformed in a direction in which the diameter decreases, and the outer surface of the end portion of the pipe 1 It deform | transforms so that the annular clearance 38 between the inner surfaces of the diameter type | mold 33 may be filled up. Therefore, as shown in FIG. 2B, the thickness of the end portion of the pipe 1 is increased. When the stopper portion 37 comes into contact with the end surface of the outer diameter mold 33, the movement of the presser 32 stops. Then, the press die 21 moves in the direction opposite to the press direction, and the thickening die 31 is detached from the pipe 1.
次いで、プレス金型21が上方に移動して第1拡径金型41を配管1に対向させる。そして、プレス金型21が配管1に向かって移動する。図3(a)に示すように、第1拡径金型41は、多段円柱状の拡径マンドレル42と、この拡径マンドレル42に同軸状かつ軸方向に移動自在に組み合わされた円筒状の外径型43と、この外径型43を拡径マンドレル42に対して軸方向先端側に付勢するバネ44とから成っている。   Next, the press die 21 moves upward to make the first diameter-expanding die 41 face the pipe 1. Then, the press die 21 moves toward the pipe 1. As shown in FIG. 3 (a), the first diameter-expanding die 41 has a multi-stage cylindrical diameter-expanding mandrel 42 and a cylindrical shape combined with the diameter-expanding mandrel 42 coaxially and movably in the axial direction. The outer diameter mold 43 includes a spring 44 that urges the outer diameter mold 43 toward the distal end in the axial direction with respect to the enlarged mandrel 42.
拡径マンドレル42は、配管1内部に摺動自在に入り込む頭部45と、これよりも大径の拡径部46と、これよりも大径のストッパ部47とを有している。なお、頭部45と拡径部46の間はテーパ状部48となっている。また、外径型43の内径は、増厚工程で増厚された配管1の端部の外径よりも大きくなっている。   The diameter-expanded mandrel 42 has a head portion 45 that slidably enters the inside of the pipe 1, a diameter-expanded portion 46 having a larger diameter, and a stopper portion 47 having a larger diameter. A tapered portion 48 is formed between the head 45 and the enlarged diameter portion 46. Further, the inner diameter of the outer diameter mold 43 is larger than the outer diameter of the end portion of the pipe 1 thickened in the thickening step.
第1拡径金型41がプレス方向に移動することにより、まず拡径マンドレル42の頭部45が配管1の内部に入り込み、次いで外径型43の先端面がフランジ2に当接する。これによって外径型43の移動が停止し、拡径マンドレル42のみが移動し、バネ44が圧縮される。   When the first diameter-expanding die 41 moves in the pressing direction, the head 45 of the diameter-expanding mandrel 42 first enters the inside of the pipe 1, and then the distal end surface of the outer-diameter mold 43 comes into contact with the flange 2. As a result, the movement of the outer diameter mold 43 stops, only the diameter-expanding mandrel 42 moves, and the spring 44 is compressed.
そして、テーパ状部48が配管1の先端の内周部の縁に当接し、配管1の端部が外径型43の内面との間の環状の隙間49を埋めるように拡径し始める。テーパ状部48が配管1の内部に入り込むと拡径部46が配管1の内部に入り込み、図3(b)に示すように、配管1の端部を外径型43の内面に接した状態に成形する。ストッパ部47が外径型43の端面に当接すると拡径マンドレル42の移動が停止する。そして、プレス金型21がプレス方向と逆方向に移動して第1拡径金型41が配管1から離脱する。   Then, the tapered portion 48 comes into contact with the edge of the inner peripheral portion at the tip of the pipe 1, and the diameter of the end portion of the pipe 1 starts to expand so as to fill the annular gap 49 between the inner surface of the outer diameter mold 43. When the tapered portion 48 enters the inside of the pipe 1, the enlarged diameter portion 46 enters the inside of the pipe 1, and the end portion of the pipe 1 is in contact with the inner surface of the outer diameter mold 43 as shown in FIG. To form. When the stopper 47 comes into contact with the end face of the outer diameter mold 43, the movement of the enlarged diameter mandrel 42 stops. Then, the press die 21 moves in the direction opposite to the press direction, and the first diameter expanding die 41 is detached from the pipe 1.
次いで、プレス金型21が上方に移動して第2拡径金型51を配管1に対向させる。そして、プレス金型21が配管1に向かって移動する。図4(a)に示すように、第2拡径金型51は、多段円柱状の拡径マンドレル52と、この拡径マンドレル52に同軸状かつ軸方向に移動自在に組み合わされた円筒状の外径型53と、この外径型53を拡径マンドレル52に対して軸方向先端側に付勢するバネ54とから成っている。   Next, the press mold 21 moves upward, and the second diameter expansion mold 51 is made to face the pipe 1. Then, the press die 21 moves toward the pipe 1. As shown in FIG. 4A, the second diameter-expanding mold 51 has a multi-stage columnar diameter-expanded mandrel 52 and a cylindrical shape that is combined with the diameter-expanded mandrel 52 coaxially and movably in the axial direction. The outer diameter mold 53 includes a spring 54 that urges the outer diameter mold 53 toward the distal end in the axial direction with respect to the enlarged mandrel 52.
拡径マンドレル52は、配管1内部に入り込む頭部55と、これよりも大径の拡径部56と、これよりも大径のストッパ部57とを有している。なお、頭部55と拡径部56の間はテーパ状部58となっている。また、外径型53の内径は、第1拡径工程で拡径された配管1の端部の外径よりも大きくなっている。   The diameter-expanding mandrel 52 has a head portion 55 that enters the inside of the pipe 1, a diameter-expanding portion 56 that has a larger diameter, and a stopper portion 57 that has a larger diameter. A tapered portion 58 is formed between the head portion 55 and the enlarged diameter portion 56. Further, the inner diameter of the outer diameter mold 53 is larger than the outer diameter of the end portion of the pipe 1 expanded in the first diameter expansion process.
第2拡径金型51がプレス方向に移動することにより、まず拡径マンドレル52の頭部55が配管1の内部に入り込み、次いで外径型53の先端面がフランジ2に当接する。これによって外径型53の移動が停止し、拡径マンドレル52のみが移動し、バネ54が圧縮される。   When the second diameter expanding mold 51 moves in the pressing direction, the head 55 of the diameter expanding mandrel 52 first enters the inside of the pipe 1, and then the tip surface of the outer diameter mold 53 abuts on the flange 2. As a result, the movement of the outer diameter mold 53 stops, only the diameter-expanded mandrel 52 moves, and the spring 54 is compressed.
そして、テーパ状部58が配管1の先端の内周部の縁に当接して配管1の端部が外径型53の内面との間の環状の隙間59を埋めるように拡径し始める。テーパ状部58が配管1の内部に入り込むと拡径部56が配管1の内部に入り込み、図4(b)に示すように、配管1の端部を外径型53の内面に接した状態に成形する。ストッパ部57が外径型53の端面に当接すると拡径マンドレル52の移動が停止する。そして、プレス金型21がプレス方向と逆方向に移動して第2拡径金型51が配管1から離脱する。   Then, the tapered portion 58 comes into contact with the edge of the inner peripheral portion at the tip of the pipe 1 and the diameter of the end of the pipe 1 begins to expand so as to fill the annular gap 59 between the inner surface of the outer diameter mold 53. When the tapered portion 58 enters the inside of the pipe 1, the enlarged diameter portion 56 enters the inside of the pipe 1, and the end portion of the pipe 1 is in contact with the inner surface of the outer diameter mold 53 as shown in FIG. To form. When the stopper portion 57 comes into contact with the end face of the outer diameter mold 53, the movement of the enlarged diameter mandrel 52 stops. Then, the press die 21 moves in the direction opposite to the press direction, and the second diameter expanding die 51 is detached from the pipe 1.
次いで、プレス金型21が上方に移動して全長成形用金型61を配管1に対向させる。そして、プレス金型21が配管1に向かって移動する。図5(a)に示すように、全長成形用金型61は、二段円柱状の芯金62と、この芯金62に同軸状に固定された円柱状のパンチ型63とから成っている。   Next, the press die 21 moves upward and the full-length molding die 61 is opposed to the pipe 1. Then, the press die 21 moves toward the pipe 1. As shown in FIG. 5A, the full-length molding die 61 is composed of a two-stage cylindrical cored bar 62 and a cylindrical punch mold 63 fixed coaxially to the cored bar 62. .
芯金62は、パンチ型63の一方の端面から軸方向に形成された断面円形の凹部64内に同軸状に固定されていて、芯金62と凹部64の間には環状の隙間65が形成されている。この隙間65には、第2拡径工程で拡径された配管1の端部が入り込むようになっている。   The core metal 62 is fixed coaxially in a concave section 64 having a circular cross section formed in the axial direction from one end face of the punch die 63, and an annular gap 65 is formed between the core metal 62 and the concave section 64. Has been. The end of the pipe 1 whose diameter has been expanded in the second diameter expansion process enters the gap 65.
芯金62は、配管1内部に入り込む直軸部66と、これよりも大径の押圧部67とを有している。なお、芯金62の外周部には、軸方向の略全長にわたって延びる一対の溝状の凹部68が径方向に対向するように刻設されている(図6参照)。芯金62は、配管1における拡径されていない部分の内部に摺動自在に入り込むようになっている。   The cored bar 62 has a straight shaft part 66 that enters the inside of the pipe 1 and a pressing part 67 having a larger diameter than this. In addition, a pair of groove-like recesses 68 extending substantially over the entire length in the axial direction are formed on the outer peripheral portion of the core metal 62 so as to face each other in the radial direction (see FIG. 6). The core metal 62 is slidably inserted into a portion of the pipe 1 where the diameter is not expanded.
全長成形用金型61がプレス方向に移動することにより、まず芯金62の直軸部66が配管1の内部に入り込む。次いで隙間65に配管1の先端が入り込み、押圧部67が配管1の内部に入り込む。これにより、芯金62と配管1との間に環状の空間Sが形成される。   When the full-length molding die 61 moves in the pressing direction, the straight shaft portion 66 of the core metal 62 first enters the inside of the pipe 1. Next, the tip of the pipe 1 enters the gap 65, and the pressing portion 67 enters the inside of the pipe 1. Thereby, an annular space S is formed between the core metal 62 and the pipe 1.
そして、押圧部67の端面が配管1の内部のテーパ状の面1aを押圧し、この面1aを、図5(b)に示すように、配管1の軸方向と略直交するように成形する。このとき、プレス油が凹部68内に逃げるため、配管1の内面に無理な力をかけずに成形することができる。   And the end surface of the press part 67 presses the taper-shaped surface 1a inside the piping 1, and this surface 1a is shape | molded so as to be substantially orthogonal to the axial direction of the piping 1, as shown in FIG.5 (b). . At this time, since the press oil escapes into the recess 68, the inner surface of the pipe 1 can be molded without applying an excessive force.
すなわち、芯金62がプレス方向に摺動するにしたがって空間Sが縮小することになるが、凹部68が設けられていないと、空間Sは閉空間となるため、この空間S内にプレス油が滞留して芯金62により圧縮されることになる。これにより、配管1の内面に無理な力がかかり、配管1の変形をもたらすことがある。本実施形態では、空間Sに連通した凹部68を介して空間S内のプレス油が排出されるため、このような問題が生じない。   That is, the space S is reduced as the cored bar 62 slides in the pressing direction. However, if the concave portion 68 is not provided, the space S becomes a closed space. It stays and is compressed by the cored bar 62. Thereby, an unreasonable force is applied to the inner surface of the pipe 1 and the pipe 1 may be deformed. In this embodiment, since the press oil in the space S is discharged through the recess 68 communicating with the space S, such a problem does not occur.
また、本実施形態では、パンチ型63の先端面がフランジ2に当接すると第2拡径金型61の移動が停止し、配管1の拡径された端部が所定長さLとなる。このように、全長成形用金型61は、配管1の端部を所定形状に成形する工程と、被成形部分を軸方向全長が所定長さとなるように加工する工程とを同時に行うので、工程数が低減して製造コストの低減を図ることができる。   Further, in the present embodiment, when the tip surface of the punch die 63 comes into contact with the flange 2, the movement of the second diameter-expanding die 61 is stopped, and the diameter-expanded end portion of the pipe 1 has a predetermined length L. Thus, the full length molding die 61 simultaneously performs the step of forming the end portion of the pipe 1 into a predetermined shape and the step of processing the portion to be molded so that the axial total length is a predetermined length. The number can be reduced and the manufacturing cost can be reduced.
そして、プレス金型21がプレス方向と逆方向に移動して全長成形用金型61が配管1から離脱する。このとき、芯金62と配管1との摺接面には凹部68を介して空気が導かれているため、芯金62と配管1との密着力は小さく、芯金62が配管1からスムーズに離脱する。したがって、配管1が芯金62によって引っ張られることがなく、変形を防止することができる。   Then, the press die 21 moves in the direction opposite to the press direction, and the full length forming die 61 is detached from the pipe 1. At this time, since air is guided to the sliding contact surface between the metal core 62 and the pipe 1 through the recess 68, the adhesion force between the metal core 62 and the pipe 1 is small, and the metal core 62 smoothly moves from the pipe 1. Leave. Therefore, the pipe 1 is not pulled by the core metal 62, and deformation can be prevented.
最後に、図7に示すように、配管1の拡径された端部の外周部に周方向に回転する転ローラが押し付けられてOリングを嵌着するための環状の溝4が転造加工される。   Finally, as shown in FIG. 7, an annular groove 4 for rolling an annular ring 4 to fit an O-ring by pressing a rolling roller rotating in the circumferential direction against the outer peripheral portion of the pipe 1 having an enlarged diameter. Is done.
本発明は、配管の端部を拡径するための金型、特に拡径率が150%以上の高拡径率の金型に適用した場合に特に有効である。これは、配管を拡径することで配管が金型表面に強く密着するため、プレス油が逃げにくいと共に、配管から離型しにくいからである。   The present invention is particularly effective when applied to a mold for expanding the diameter of an end of a pipe, in particular, a mold having a high expansion ratio with a diameter expansion ratio of 150% or more. This is because, by expanding the diameter of the pipe, the pipe strongly adheres to the mold surface, so that the press oil is difficult to escape and is not easily released from the pipe.
本発明の一実施形態である全長成形用金型を含むプレス金型及び配管クランプ装置の斜視図。The perspective view of the press metal mold | die and piping clamp apparatus containing the metal mold | die for full length shaping | molding which is one Embodiment of this invention. 増厚工程の説明図。Explanatory drawing of a thickening process. 第1拡径工程の説明図。Explanatory drawing of a 1st diameter expansion process. 第2拡径工程の説明図。Explanatory drawing of a 2nd diameter expansion process. 全長成形工程の説明図。Explanatory drawing of a full length shaping | molding process. 全長成形用金型の要部斜視図Perspective view of main part of full-length mold 実施形態の製造方法により製造されたフランジ付配管継手の要部断面図。The principal part sectional drawing of the piping joint with a flange manufactured by the manufacturing method of an embodiment.
符号の説明Explanation of symbols
1 配管
61 全長成形用金型(配管端末成形用金型)
68 凹部
S 空間
1 Piping 61 Full length mold (Pipe end mold)
68 Recess S Space

Claims (3)

  1. 塑性変形可能な配管(1)の端部に入り込み、配管(1)に対して前記端部と背反する方向に摺動しつつ前記端部をプレスして所定形状に成形するものであって、
    プレス時に配管(1)との摺接面のプレス油を逃がすための凹部(68)を設けたことを特徴とする配管端末成形用金型。
    It enters the end of the plastically deformable pipe (1), presses the end while sliding in a direction opposite to the end with respect to the pipe (1), and is molded into a predetermined shape,
    A die for forming a pipe end, which is provided with a recess (68) for releasing press oil on the sliding contact surface with the pipe (1) during pressing.
  2. 配管(1)の端部を所定形状に成形すると同時に被成形部分の軸方向全長が所定長さになるように加工することを特徴とする請求項1記載の配管端末成形用金型。   The pipe end molding die according to claim 1, wherein the end of the pipe (1) is molded into a predetermined shape and simultaneously processed so that the entire axial length of the portion to be molded becomes a predetermined length.
  3. 配管(1)の端部を拡径させるものであることを特徴とする請求項1又は請求項2記載の配管端末成形用金型。   The pipe end molding die according to claim 1 or 2, wherein an end of the pipe (1) is expanded.
JP2003281924A 2003-07-29 2003-07-29 Die for forming end of piping Pending JP2005046880A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007185702A (en) * 2006-01-16 2007-07-26 Japan Climate Systems Corp Manufacturing tool of heat exchanger and method of manufacturing heat exchanger using the same manufacturing tool
JP2012166258A (en) * 2011-02-16 2012-09-06 Yutaka Giken Co Ltd Method for manufacturing tube, device for manufacturing the same, and exhaust pipe for engine
KR20160087532A (en) * 2015-01-14 2016-07-22 서상봉 Preparation method of integral drain pipe for pop-up type opening/closing device of sink

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007185702A (en) * 2006-01-16 2007-07-26 Japan Climate Systems Corp Manufacturing tool of heat exchanger and method of manufacturing heat exchanger using the same manufacturing tool
JP2012166258A (en) * 2011-02-16 2012-09-06 Yutaka Giken Co Ltd Method for manufacturing tube, device for manufacturing the same, and exhaust pipe for engine
KR20160087532A (en) * 2015-01-14 2016-07-22 서상봉 Preparation method of integral drain pipe for pop-up type opening/closing device of sink
KR101672613B1 (en) * 2015-01-14 2016-11-03 서상봉 Preparation method of integral drain pipe for pop-up type opening/closing device of sink

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