JP3841931B2 - Molding method and molding equipment by mixing both forward and reverse throttles - Google Patents

Description

【００１４】
表１に示した連続加工工程の内、打抜加工や絞り成形等の個々の工程自体を取り上げた場合、その工程を構成する成形装置ならびに各工程間に置かれる移載装置は充分公知の技術により対応できるが、製造コストを引き下げる目的で工程の連続化をもくろむと、〔００１０〕項の説明の如く形状変化の過程で先行加工内容が後加工により影響を受ける干渉が生じ、後加工が進められない場面に出くわすことがしばしば起こるので、止む得ず加工材の形状を複数個に分割し生産するが、当然のことながら該生産は方法の複数化と付帯作業の増加を避けることができない。
【００１５】
本発明では、表１に記載した正絞りと逆絞りの両加工工程の役割が、先ず正絞りにより次加工で邪魔な部分を加工域外に一旦排除し、必要部分の加工を終了した後に正絞り部分を逆絞りにより最終形状とするもので、正絞りと逆絞りの加工表面積の割合を同じか前者を大き目とすることにより、加工の前後で干渉が発生しないようにしたので、加工対象材の分割もなくなり工程自体が増えても加工の連続によるメリットの方が多く、加工材の分割方法に較べて製造のコストを大幅に低下することができた。
【００１６】
本発明による成形方法の適用対象は、全工程を通して加工対象材に増減がない場合に、量産形のプレッシャレギュレータに限らず、内部に突出部分と外部加工を必要とする大小の薄板の成形品であればよく、特に順送加工もしくはトランスファプレス加工と呼ばれる連続工程設備に組み込むと顕著な効果が得られるが、各工程間の移載機構については公知の装置の使用でよく説明を省略する。
【００１７】
【作用】
本発明による正逆両絞りの混用による成形方法と成形設備と成形品の持つ作用は、加工材の内面突出加工を先行すると、加工材の外面加工の際に内面に金型の挿入を難しくしたり後加工により影響をうける場合に、特定部の加工を予め正絞り加工し中間加工を済ませた後に逆絞りを施す二段加工により、先加工の部分に影響を与えることなく最終形状の薄板容器が得られる。
【００１８】
【比較例】
図１は、量産形のプレッシャレギュレータ１の斜視図で、レギュレータ１は作動部２と弁座部３からなり、両者は接続部４に於いて作動部２側の折り曲げたフランジ５を利用して弁座部３のフランジ６を加締め一体化した構造で、作動部の中にダイアフラムを内蔵し、該ダイアフラムは接続管７から供給される制御流体により動作し、図１のａ部分を弁軸に沿う断面とした図２（Ａ）に示すように、レギュレータ外殻８は内部を出入りする流体の出入口成形品９と取付座１０と弁座１１を形成する流体の別の接続管１３付出入口成形品１２から構成され、弁座１０は作動部２のダイアフラムに直結弁１４と接している。
【００１９】
図２（Ａ）に示したレギュレータ外殻８は鋼製の薄板成形品で、該レギュレータ外殻に接続する流体の出入口成形品９と取付座１０と流体の別の出入口成形品１２は何れも焼結金属成形品であり、両者は圧入による嵌合後にろう付け処理を行って密封接続して一体化をはかっているので、圧入とろう付け箇所は多くなり必然的にシール面の傷．打痕．ろうだれ等の問題を提起し検査を含め製造コストを高める原因となっている。
【００２０】
この様な圧入とろう付けの問題は、加工を進めるためには複雑な形状を分割せざるを得ないことから提起されるもので、加工対象品の外殻内に金型を挿入するに充分なスペースを有するか、最初の絞り加工で形成した外面に何ら追加の加工を必要としない何れかの条件を満たす限り、外殻内に突出部分を形成することは従来の技術においても何ら難しい事ではないが、この条件が満たされない限り外殻への孔加工を先行し後から突出加工をする等の加工順序を変えても、先行部分の変形を伴わない連続成形はできない。
【００２１】
【実施例】
図２（Ｂ）は、同図（Ａ）のレギュレータ外殻８と出入口成形品１２を一体化した鋼製の薄板成形品からなるレギュレータ外殻１６を使用した量産形のプレッシャレギュレータ１５で、レギュレータ外殻１６と流体の出入口成形品９と取付座１０の部分のみ圧入嵌合後にろう付け処理を行い密封接続し一体化したので、圧入とろう付け作業は減少し該作業を原因とするシール面の傷．打痕．ろうだれの問題を減らし検査を楽にした。
【００２２】
製法の相違を捉え易いように、図３（Ａ，Ｃ）に従来品による異なった接続管１３，１３Ａが付いたレギュレータ外殻８回りを、図３（Ｂ，Ｄ）に本発明に基づき成形したレギュレータ外殻１６回りの断面図を示したが、図３（Ａ，Ｃ）の薄板成形品であるレギュレータ外殻８と焼結金属成形品である流体の別の出入口成形品１２とが、図３（Ｂ，Ｄ）では薄板材料から一体的に造られてレギュレータ外殻１６になるので、焼結金属成形品一点と該品の取付け作業を減らすことができた。
【００２３】
本項以降に加工工程を詳細に説明するが、図４（Ａ〜Ｆ）と図５（Ｇ〜Ｊ）とに、本発明の薄板材料から外殻内に突出部を有する薄板容器に到る工程別形状の変化の推移を示し、各図に付記したアルファベット符号と「特許請求の範囲」欄の〔請求項１，３〕と「発明の詳細な説明」欄の〔０００８〕項と表１のフローシートに併記したアルファベット符号とを対応せしめた。
【００２４】
図４（Ａ）は、細幅でロール状の薄板を巻き戻し矯正加工工程を経て平らとした帯状材料を使用し、打抜加工工程で円板状とした薄板材料１７の側面図で、図４（Ｂ）は、正絞り加工工程で本薄板材料の縁１８から内部方向に環状部分をフランジとして確保し、残りの内側部分を一方向に押し出して二段の円筒状に成形し、一段目の壁２０と段２１および二段目の壁２２と天井２３からなる天部付加工材２４の断面図で、この正絞りによる天部の全表面積は後工程の逆絞りによる内面への突出部の全表面積に等しいかやや大きい目とした。
【００２５】
図４（Ｃ）は、天部付加工材２４の一段目の円筒の壁２０面の一部を平坦面とするために、内面に金型の一方を挿入し外面から金型の他方で加圧し平坦面２５とした断面図を示し、図４（Ｄ）は、平坦面付加工材２６の平坦面２５に金型により打ち抜いた横孔２７付の断面図を示し、本孔は焼結金属成形品の取付座１０と流体の出入口成形品９の接続孔として使用し、その際、取付座１０と平坦面２５．出入口成形品９と取付座１０の各接続面をろう付けにより密封した。
【００２６】
図４（Ｅ）は、横孔付加工材２８まで加工を進めた段階で初めて、最初の段階で加工した正絞りによる二段目の壁２２と天井２３からなる天部を、反対方向に逆絞り加工して内面に突出せしめ、環状縁部２９と一段目の壁３０と段３１および二段目の壁３２と底３３からなる突出部を備えた形状の断面図で、この段階では底３３等の突出部分の段や底に隅部分には曲面が残されている。
【００２７】
図４（Ｆ）は、内面突出部付加工材３４の二段の逆絞り部を壁３５と段３６および壁３７と底３８に整形した形状の断面図を、図５（Ｇ）は、整形突出部付加工材３９の底部分に孔４０を開けた形状の断面図を、図５（Ｈ）は、孔付加工材４１の孔４０の端面を円錐状に拡大した形状の孔端面４２で、端面処理加工は糸面を施した形状の断面図である。
【００２８】
図５（Ｉ）は、端面処理加工材４３の縁を相手との接合に必要な形状のフランジ４４とした形状の断面図を、図５（Ｊ）は、フランジ付加工材４５が相手の接合形状によりフランジ４４の外縁を内側に折り曲げて加工し、曲げフランジ４５とした曲げフランジ付加工材４６の最終形状の断面図を、図６は図５（Ｉ）のフランジ付加工材４５の矢視図で、一連の加工はプレスと工程間自動移載装置により全て連続運転される。
【００２９】
この成形の特徴は、連続加工工程の中で図４（Ｂ）に示した形状を得るための正絞り加工工程と図４（Ｅ）に示した形状を得るための逆絞り加工工程が含まれ、両絞りに使用する組金型の有効成形部分の全表面積が略等しいように決められていることであり、この処置により両者の間に別の加工工程を組入れても、前工程による加工部分が後工程により影響をうけることがなくなった。
【００３０】
本発明の成形方法に基づく成形設備で造られた成形品のレギュレータ外殻１６は、既に説明した図３（Ａ，Ｃ）と同（Ｂ，Ｄ）との比較で明らかな如く、周辺部品の点数と加工と検査の手間を減らし、この加工のために必要な連続成形設備もまた在来設備に正絞り工程に対応するように逆絞りの工程を付加するだけでよく、こうした努力によりレギュレータ外殻１６の製造コストの低下は率にして、本発明以前の方法に較べて凡そ３０パーセントに達した。
【００３１】
【発明の効果】
本発明の正逆両絞りの混用による成形方法と成形設備により下記の効果を得た。
1)複雑な形状の容器を薄板材料から一体的に造りだすことが可能になった。
2)一体化により部品点数が減少し該部品の製造と組立と検査に要した手間も併せて減少した。
3)従来の順送プレスかトランスファープレスを使用し、正逆両絞りの両工程の間を空け、その間に別の工程を組み込む構成だけで、複雑な形状の容器の連続加工を可能とした。
4)この成形方法と成形設備による成形品の製造コストは大幅に低下した。
【図面の簡単な説明】
【図１】 プレッシャレギュレータの斜視図である。
【図２】 図１ａ部分の（Ａ）は従来品の断面図を、（Ｂ）は本発明品の断面図を夫々示した。
【図３】 （Ａ）は従来方法に基づいたレギュレータの外殻回り、（Ｂ）は本発明に基づいたレギュレータ外殻回り、（Ｃ）は従来方法に基づいたレギュレータの別の外殻回り、（Ｄ）は本発明に基づいたレギュレータの別の外殻回り各断面図である。
【図４】 （Ａ）〜（Ｆ）に至る各断面図は連続成形工程での加工材の形状変化の推移を示す。
【図５】 （Ｇ）〜（Ｊ）に至る各断面図は連続成形工程での加工材の形状変化の推移を示す。
【図６】 レギュレータ外殻の上面図である。
【符号の説明】
１，１５ プレッシャレギュレータ
２ 作動部
３ 弁座部
４ 接続部
５．６ フランジ
８，１６ レギュレータ外殻
１７ 薄板材料
１８ 縁
２０ 一段目の壁
２１ 一段目の段
２２ 二段目の壁
２３ 二段目の天井
２４ 天部付加工材
２５ 平坦面
２６ 平坦面付加工材
２７ 横孔
２８ 横孔付加工材
３０，３５ 一段目の壁
３１，３６ 一段目の段
３２，３７ 二段目の壁
３３，３８ 二段目の底
３４ 内面突出部付加工材
３９ 整形突出部付加工材
４０ 孔
４１ 孔付加工材
４３ 端面処理加工材
４４ フランジ
４５ フランジ付加工材
４６ 曲げフランジ付加工材[0001]
[Industrial application fields]
The present invention relates to a technique for producing a container with few joints by integrally shaping a plurality of members having different shapes constituting a pressure regulator from a thin plate material mainly by press molding.
[0002]
[Prior art]
When operating the equipment, if the equipment is accompanied by a change in temperature or pressure, an automatic adjustment device consisting of a detection unit and a control unit is provided in order to cope with the change. In many cases, a sensor that detects the amount of mechanical displacement and a mechanism that operates based on an output based on the amount of displacement of the sensor are built in the control unit, and a pressure regulator is used in a control device that opens and closes the valve seat using such a mechanism. Or there is a functional product simply called a regulator, and there are many types ranging from a very large single product that requires a crane to a mass production product on the palm.
[0003]
In the mass production type pressure regulator as shown in FIG. 1, the number of component parts and the materials used for the parts are various. However, the structure of the upper part as shown in FIG. is a combination of the valve stem actuating portion and the valve seat portion, the operation intended by advancing and retracting the valve stem in one direction, movement of the central axis of the built-in die a Fulham (not shown) in the valve stem actuating portion There was open and close the valve, actuation input to the die a Fulham small but is enlarged until sufficient magnitude to move the valve stem by the die a Fulham.
[0004]
The components of the pressure regulator are mainly composed of parts molded from powder raw materials by means of die casting or metal sintering, and molded products consisting of thin sheet materials by sheet metal processing using a press. Appropriate combinations of sealing materials, etc., are assembled after joining by means of caulking, press-fitting, brazing, etc., then painted and subjected to a pressure test, but turning products are used among these parts Occasionally, such opportunities have become extremely rare.
[0005]
[Problems to be solved by the invention]
The structure of the pressure regulator shown in FIG. 2 (A) has many parts assembled around a thin plate container, and the press-fitting part and the molded part other than the press or the number of joint surfaces due to the combination of the parts are press-fitted. Damage to the sealing surface caused by increased work processes such as brazing and inspection, and due to press fitting and brazing. Dents. Such a method has approached the limit to answer the demand for cost reduction that cannot be avoided in mass-produced products, because it raises problems such as drooling and affects the total production cost of the product.
[0006]
Manufacturing industry. Regardless of the non-manufacturing industry, the ratio of labor costs to the total cost of all industries is only rising year by year, so manufacturers are making investments for thorough unmanned work, which is the ultimate in labor saving of equipment. At present, the structure of the parts itself is trying to find a shape suitable for unmanned production, and it is hard to reduce the ratio of labor costs to the cost.
[0007]
[Means for Solving the Problems]
The present invention is intended for a thin plate container that is a main part of a pressure regulator, and a thin plate container and components that have been conventionally bonded by means of press-fitting and brazing, and by a continuous processing process of a press that uses both forward and reverse drawing, An object is to provide a molding method and a molding facility for producing a sheet material integrally.
[0008]
The present invention uses a metal-made thin plate material having a required thickness and narrow width, and a material that has been subjected to a distortion correction processing step of the material, (A). Punching the material into a disk-shaped thin plate material of a required size by a punching process, (B). Part of the circumference of the disk-shaped thin plate material is held in an annular shape, the remaining inner part protrudes in two steps, and the top wall and step, and the second wall and ceiling are molded, with a top Work material (C). A part of the cylindrical surface of the first stage wall with the top is molded into a flat surface to obtain a flat surface-treated material (D). (E) a horizontal hole is formed in a flat portion of the flat surface processed material to form a horizontal hole processed material; Squeeze the ceiling of the second step of the workpiece with horizontal holes in the direction opposite to the protruding direction, and mold it into the annular edge, the first step wall, the step and the second step wall and the bottom, to make the inner protruding portion processed material, (F). Shape the first step wall and step and second step wall and bottom of the projecting part, including the annular edge of the inner projecting part work material, to obtain a shaped projecting member with the necessary fitting accuracy (G ). Punching out the bottom tip of the workpiece with the shaping protrusion to make a hole to obtain a holed workpiece, (H). The end face of the hole of the holed work material is enlarged or shaped into a thread surface to obtain an end face treated material, (I). Processing the circumferential part of the end face processed material into a required flange to obtain a flanged material (J). It is a forming method by mixing both forward and reverse drawing, characterized in that each shape change to bend a flanged workpiece by bending the outer edge of the flange of the flanged workpiece to the inside over the entire circumference, Based on the method, (A). A punching process in which the material is formed into a disk-shaped thin plate material having a required size by a punching process; and (B). Part of the circumference of the disk-shaped thin plate material is held in an annular shape, the remaining inner part protrudes in two steps, and the top wall and step, and the second wall and ceiling are molded, with a top A forward drawing process as a workpiece, (C). A flat processing step of forming a part of the cylindrical surface of the first-stage wall of the top processed material into a flat surface to obtain a flat surface processed material; and (D). A hole forming step of forming a hole in a flat portion of the flat surfaced work material to form a horizontal hole work material; (E). The second-stage ceiling of the workpiece with a horizontal hole is squeezed in the direction opposite to the protruding direction, and formed into an annular edge, first-stage wall, step, second-stage wall, and bottom to obtain a workpiece with an internal protrusion. A reverse drawing process; (F). Shaping the first step wall and step and the second step wall and bottom of the projecting part, including the annular edge of the work material with inner projecting part, into a shaped projecting part with the required mating accuracy. A step, (G). (H) a hole forming process for forming a hole with a hole in the bottom end portion punching of the workpiece with the shaping protrusion, and (H). (1) an end face machining step in which the end face of the hole of the holed work material is enlarged or shaped into a yarn surface to obtain an end face treated work material; A cutting step of processing the circumferential portion of the end surface treated material into a required flange to obtain a flanged material, (J). Bending process for bending flanged workpieces by bending the outer edges of flanged workpieces over the entire circumference to make a bent flanged workpiece. It is a molding facility that uses both throttles.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the material of the main part is steel. stainless steel. Targeting mass production type pressure regulators composed of metals such as copper-based alloys, the main parts of the regulator have been integrated by multiple bonding means, but progressive processing or transfer presses. Press-fit because a thin plate material is processed by a continuous process called processing to minimize the number of bonding points and the required precision is established. The inspection and management labor associated with the brazed joints has been reduced and the production cost of this part has been reduced.
[0010]
In the present invention, when the final shape of the thin plate container needs to have a protrusion on the inner surface and a flat surface or a hole on the outer surface of the cylinder, the shape of the protrusion on the inner surface and the processing of the outer surface interfere with each other for molding. One of the features is that the surface area corresponding to the part protruding from the inner surface is once squeezed out in the same direction as the outer surface molding (for the sake of convenience, for the sake of convenience) It referred to as the diaphragm) that is, after the second feature is that finished the processing such as open flat surface and holes remains of the shape, referred to as the first part of the positive stop squeezing the opposite direction (for convenience reverse stop) By adopting the final shape, the surface area of the molding part at that time is substantially close to the surface area of the first molding part.
[0011]
Such mixed use of both forward and reverse diaphragms is less necessary when the processing space is sufficient for inserting a mold, etc., but if a protrusion is processed on the inner surface, a flat surface is formed on the outer surface of the cylinder. The mold insertion space required for forming and drilling is insufficient, so that if the drilling is preceded, the leading part will be deformed by the subsequent process, which is a hand that can be used to achieve a great effect. This is because, by considering the surface area equivalent to the protrusion of the steel plate in the pre-processing stage, deformation can be prevented without being affected by the post-processing even if the intermediate processing of the flat surface or drilling is preceded. .
[0012]
This series of processing steps is as shown in Table 1. The difference in the processing shape of the flange in the final stage is a condition determined by whether the mating side to be connected has a connecting means such as caulking or the part side has a connecting means. The symbols in each column of Table 1 correspond to the symbols described in [Claims 1 and 3] in the [Claims] column and [0008] in the [Detailed Description of the Invention] column, and FIG. This also corresponds to the reference numeral indicating the processing step from the thin plate material 5 to the thin plate container.
[0013]
[Table 1]

[0014]
Of the continuous processing steps shown in Table 1, when individual steps such as punching and drawing are taken up, the forming device constituting the step and the transfer device placed between the steps are well known in the art. However, if the continuation of the process is intended for the purpose of reducing the manufacturing cost, as described in the paragraph [0010], interference occurs in the process of shape change that affects the contents of the preceding process, and the post-processing proceeds. Since it often happens that it is impossible to meet the situation, it is unavoidable to divide the shape of the workpiece into a plurality of parts, and it is natural that the production cannot avoid a plurality of methods and an increase in incidental work.
[0015]
In the present invention, the roles of both the forward drawing and reverse drawing processes described in Table 1 are to first remove the obstructive part from the machining area by the normal drawing and then to complete the drawing of the necessary part. The part is made into a final shape by reverse drawing, and the ratio of the processing surface area of the normal drawing and the reverse drawing is the same or the former is set large so that interference does not occur before and after processing. Even if there were no divisions and the number of processes increased, there were many advantages due to continuous processing, and the manufacturing cost could be greatly reduced compared to the method of dividing the workpiece.
[0016]
The application method of the molding method according to the present invention is not limited to a mass production type pressure regulator when there is no increase or decrease in the material to be processed throughout the entire process, but is a molded product of large and small thin plates that require a protruding part and external processing inside. If it is necessary to be incorporated into a continuous process facility called a progressive process or a transfer press process, a remarkable effect can be obtained. However, a transfer mechanism between each process may be a well-known apparatus and will not be described.
[0017]
[Action]
According to the present invention, the molding method, the molding equipment, and the molded product by mixing the forward and reverse diaphragms make it difficult to insert the mold into the inner surface when processing the outer surface of the workpiece, if the inner surface protrusion processing of the workpiece is preceded. In the case of being affected by post-processing, the final shape of the thin plate container without affecting the pre-processed part by two-stage processing that performs reverse drawing after processing the specific part in advance and then performing intermediate drawing Is obtained.
[0018]
[Comparative example]
FIG. 1 is a perspective view of a mass production type pressure regulator 1, and the regulator 1 includes an operating portion 2 and a valve seat portion 3, both of which utilize a bent flange 5 on the operating portion 2 side at a connection portion 4. A structure in which the flange 6 of the valve seat portion 3 is integrated by caulking, and a diaphragm is built in the operating portion. The diaphragm is operated by the control fluid supplied from the connecting pipe 7, and the portion a in FIG. 2A, the regulator outer shell 8 has a fluid inlet / outlet molded product 9 that enters and exits the inside, a mounting seat 10 and an inlet / outlet with another connecting pipe 13 that forms the valve seat 11. As shown in FIG. The valve seat 10 is composed of a molded product 12 and is in contact with the direct connection valve 14 on the diaphragm of the operating unit 2.
[0019]
The regulator outer shell 8 shown in FIG. 2 (A) is a steel sheet molded product, and the fluid inlet / outlet molded product 9, the mounting seat 10 connected to the regulator outer shell, and another fluid inlet / outlet molded product 12 are all. These are sintered metal molded products, and both of them are subjected to brazing after fitting by press-fitting and hermetically connected to achieve integration. Therefore, the number of press-fitting and brazing points increases, and the sealing surface is inevitably damaged. Dents. This raises problems such as drooling and increases manufacturing costs including inspection.
[0020]
This problem of press-fitting and brazing is raised because the complicated shape must be divided in order to proceed with the machining, and is sufficient to insert the mold into the outer shell of the workpiece. As long as there is sufficient space or any condition that does not require any additional processing on the outer surface formed by the first drawing, it is difficult to form a protruding portion in the outer shell even in the conventional technology. However, as long as this condition is not satisfied, even if the processing order is changed, such as performing drilling into the outer shell and then performing projection processing afterwards, continuous molding without deformation of the preceding portion cannot be performed.
[0021]
【Example】
FIG. 2B shows a mass production type pressure regulator 15 using a regulator outer shell 16 made of a thin steel plate molded product in which the regulator outer shell 8 and the inlet / outlet molded product 12 of FIG. Since only the outer shell 16, the fluid inlet / outlet molded product 9, and the mounting seat 10 are press-fitted and brazed, the brazing process is performed and the sealing connection is integrated. Wound. Dents. Reduced the problems of the deaf and made the inspection easier.
[0022]
3 (A, C) is molded around the regulator outer shell 8 with different connecting pipes 13, 13A according to the conventional product, and FIG. 3 (B, D) is molded according to the present invention so that the difference in the manufacturing method can be easily grasped. FIG. 3 shows a sectional view around the regulator outer shell 16. The regulator outer shell 8, which is a thin plate molded product of FIG. 3 (A, C), and another fluid inlet / outlet molded product 12, which is a sintered metal molded product, In FIGS. 3B and 3D, the regulator outer shell 16 is integrally formed from a thin plate material, so that one point of the sintered metal molded product and the mounting work of the product can be reduced.
[0023]
The processing steps will be described in detail from this section onward. FIGS. 4 (A to F) and FIGS. 5 (G to J) lead to a thin plate container having a protruding portion in the outer shell from the thin plate material of the present invention. Table 1 shows the transition of the change in the shape of each process, the alphabetical code appended to each figure, the [Claims 1 and 3] in the “Claims” column, the [0008] item in the “Detailed Description of the Invention” column, and Table 1. Corresponding to the alphabetical code written in the flow sheet.
[0024]
FIG. 4 (A) is a side view of a thin plate material 17 in which a thin and roll-shaped thin plate is flattened through a rewinding correction process and is formed into a disk shape in a punching process. 4 (B) is a forward drawing process in which an annular portion is secured as a flange inward from the edge 18 of the thin sheet material, and the remaining inner portion is extruded in one direction to form a two-stage cylindrical shape. FIG. 6 is a cross-sectional view of the work piece 24 with the top portion comprising the wall 20 and the step 21 and the second step wall 22 and the ceiling 23, and the total surface area of the top portion by the normal drawing is the protrusion to the inner surface by the reverse drawing in the subsequent process The eyes were equal to or slightly larger than the total surface area.
[0025]
In FIG. 4C, in order to make a part of the surface of the first cylindrical wall 20 of the top-attached workpiece 24 a flat surface, one of the molds is inserted into the inner surface and added from the outer surface with the other of the molds. 4 (D) shows a cross-sectional view with a lateral hole 27 punched out by a mold on the flat surface 25 of the flat surface-treated material 26, and this hole is a sintered metal. Used as a connection hole between the molded product mounting seat 10 and the fluid inlet / outlet molded product 9, and in this case , the mounting seat 10 and the flat surface 25. Each connection surface of the entrance / exit molded product 9 and the mounting seat 10 was sealed by brazing.
[0026]
FIG. 4E shows that the top part composed of the second wall 22 and the ceiling 23 by the forward drawing processed in the first stage is reversed in the opposite direction for the first time at the stage of processing to the workpiece 28 with a horizontal hole. Drawing is carried out and it is made to protrude to an inner surface, and is sectional drawing of the shape provided with the protrusion part which consists of the annular edge 29, the 1st step wall 30, the step 31, and the 2nd step wall 32, and the bottom 33. A curved surface is left at the corner portion at the step or bottom of the protruding portion.
[0027]
FIG. 4 (F) is a cross-sectional view of a shape in which the two-stage reverse drawn portion of the workpiece 34 with an inner surface protruding portion is shaped into a wall 35 and a step 36, and a wall 37 and a bottom 38, and FIG. FIG. 5H is a cross-sectional view of a shape in which a hole 40 is formed in the bottom portion of the workpiece 39 with protrusions, and FIG. 5 (H) is a hole end surface 42 in which the end surface of the hole 40 of the holed workpiece 41 is enlarged conically. The end surface processing is a cross-sectional view of a shape with a thread surface.
[0028]
FIG. 5 (I) is a cross-sectional view of a shape in which the edge of the end surface processed material 43 is formed into a flange 44 having a shape necessary for bonding with the mating member, and FIG. FIG. 6 is a cross-sectional view of the final shape of the bent flanged workpiece 46 that is formed by bending the outer edge of the flange 44 inwardly according to the shape to form a bent flange 45, and FIG. 6 is an arrow view of the flanged workpiece 45 of FIG. In the figure, a series of processes are all continuously operated by a press and an inter-process automatic transfer device.
[0029]
The characteristics of this molding include a forward drawing process for obtaining the shape shown in FIG. 4B and a reverse drawing process for obtaining the shape shown in FIG. 4E in the continuous machining process. The total surface area of the effective molding part of the mold used for both drawing is determined to be approximately equal, and even if another processing step is inserted between the two by this treatment, the processed part by the previous process Is no longer affected by subsequent processes.
[0030]
The regulator outer shell 16 of the molded product produced by the molding equipment based on the molding method of the present invention is, as is apparent from comparison with FIGS. 3A and 3B and FIG. The number of points, processing and inspection time are reduced, and the continuous forming equipment required for this processing can be simply added to the conventional equipment with a reverse drawing process so as to correspond to the normal drawing process. The reduction in the manufacturing cost of the shell 16 has reached about 30 percent in comparison with the method before the present invention.
[0031]
【The invention's effect】
The following effects were obtained by the molding method and molding equipment by mixing the forward and reverse diaphragms of the invention.
1) It became possible to create a container with a complicated shape from a thin plate material.
2) Integration reduces the number of parts and reduces the labor required to manufacture, assemble and inspect the parts.
3) using a conventional progressive press or transfer press, air between the forward and reverse both diaphragm both steps only, only structure incorporating a separate step during which allowed the continuous processing of a container having a complicated shape .
4) The manufacturing cost of the molded product by this molding method and molding equipment has been greatly reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a pressure regulator.
2A is a cross-sectional view of a conventional product, and FIG. 2B is a cross-sectional view of a product of the present invention.
3A is around the outer shell of the regulator based on the conventional method, FIG. 3B is around the outer shell of the regulator based on the present invention, and FIG. 3C is another outer shell of the regulator based on the conventional method; (D) is each sectional drawing of another outer shell of the regulator based on the present invention.
4A to 4F are cross-sectional views showing changes in the shape change of a workpiece in a continuous forming process.
5A to 5J are cross-sectional views showing changes in the shape change of a workpiece in a continuous forming process.
FIG. 6 is a top view of a regulator outer shell.
[Explanation of symbols]
1,15 pressure regulator 2 operating portions 3 valve seat portion 4 connecting section 5.6 flanges 8,16 regulator shell 17 sheet material 18 edge 20 first stage of the wall 21 the first stage of the step 22 the second stage of the wall 23 two-stage Ceiling 24 of eye 24 Workpiece with top 25 Flat face 26 Workpiece with flat face 27 Side hole 28 Workpiece with side hole 30, 35 First stage wall 31, 36 First stage 32, 37 Second stage wall 33 , 38 Second stage bottom 34 Work piece with inner protrusion 39 Work piece 40 with shaping protrusion 40 Hole 41 Work piece with hole 43 End face treatment piece 44 Flange 45 Work piece with flange 4 Work piece with 6 bending flange

Claims (4)

  (1) Using a metal-made thin plate material having a required thickness and narrow width, and using a material that has undergone a distortion correction process of the material. Punching the material into a disk-shaped thin plate material (17) of a required size by a punching process, (B). A part of the circumference of the disk-shaped thin plate material (17) is held in an annular shape, and the remaining inner part protrudes in two steps, and the first wall (20), the step (21), and the second wall ( 22) and the ceiling (23) are formed into a workpiece with a ceiling (24), and (C). A part of the cylindrical surface of the first-stage wall (20) with the top (24) is formed into a flat surface (25) to obtain a flat surface-treated material (26), (D). A horizontal hole (27) is formed in the flat surface of the flat surface processed material (26) to form a horizontal hole processed material (28), and (E). The second-stage ceiling (23) of the work material with horizontal holes (28) is squeezed in the direction opposite to the first protruding direction, and the annular edge (29), the first-stage wall (30), the stage (31), and the second stage Formed into an eye wall (32) and a bottom (33) to form a workpiece (34) with an internal protrusion, (F). Including the shaping of the annular edge of the workpiece with internal protrusion (34), the first step of the protrusion is shaped into the wall (35) and step (36) and the second step into the wall (37) and the bottom (38). And (G) a processed material with a shaping protrusion having a required fitting accuracy. Punching out the tip of the bottom (38) of the workpiece (39) with a shaping protrusion to open a hole (40) to obtain a holed workpiece (41); (H). The end surface (42) of the hole (40) of the holed workpiece (41) is enlarged or shaped into a thread surface to obtain an end surface treated workpiece (43), (I). A circumferential portion of the end surface treated material (43) is processed into a required flange (44) to obtain a flanged material (45), (J). Forward and reverse double-drawing characterized by continuously performing each shape change of the flanged workpiece (45) by bending the outer edge of the flange (44) inward over the entire circumference to form a bent flanged workpiece (47). Molding method by mixed use.   The first stage wall of the protrusion (including the surface area of the protrusion constituting the second stage of the workpiece with ceiling (24) and the molding of the annular edge constituting the workpiece with inner protrusion (34) ( 30) and the step (31), and the ratio of the total surface area of the second wall (32) and the bottom (33) is substantially the same or the former has a slightly larger eye. 2. A molding method using both the forward and reverse diaphragms according to 1.   (1) Using a metal-made thin plate material having a required thickness and narrow width, and using a material that has undergone a distortion correction process of the material. A punching process in which the material is formed into a disk-shaped thin plate material (17) having a required size by a punching process; and (B). A part of the circumference of the disk-shaped thin plate material (17) is held in an annular shape, and the remaining inner part protrudes in two steps, and the first wall (19), the step (20), and the second wall ( 21) and the ceiling (22) are formed into a top-drawn working material (24), and a forward drawing process, (C). A flat processing step of forming a part of the cylindrical surface of the first-stage wall (19) of the top-attached workpiece (24) into a flat surface (25) to obtain a flat-surface workpiece (26); (D). An opening process step of forming a horizontal hole (27) in the flat surface of the flat surface processed material (26) to obtain a horizontal hole processed material (28), and (E). The second-stage ceiling (23) of the work material with a horizontal hole (28) is squeezed in the direction opposite to the first protruding direction, and the annular edge (29), the first-stage wall (30), the steps (31), and the second A reverse drawing step of forming a stepped wall (32) and a bottom (33) into a workpiece (34) with an internal protrusion; and (F). Including the shaping of the annular edge of the workpiece with inner protrusion (34), the first step of the protrusion is shaped into the wall (35) and step (36) and the second step into the wall (37) and the bottom (38). And (G) a shaping process for forming a workpiece with shaping protrusions (39) having a necessary fitting accuracy. A hole forming process for punching the bottom (38) tip of the workpiece (39) with the shaping protrusion and opening the hole (40) to form the holed workpiece (41); (H). An end face processing step (I) in which the end face (42) of the hole (40) of the holed work piece (41) is enlarged or shaped into a thread face to form an end face treatment work piece (43); A cutting step of processing the circumferential portion of the end-face processed material (43) into a required flange (44) to obtain a flanged material (45), and (J). Die and pressurizing device for each step of the bending process (47) by bending the outer edge of the flange (44) of the flanged work material (45) inward over the entire circumference to obtain the work material with bending flange (47) Is a molding facility that uses both forward and reverse diaphragms.   Including the surface area of the mold that protrudes and molds the second step of the workpiece with top (24) and the shaping of the annular edge of the workpiece with inner projection (34) (30 ), The step (31), the ratio of the total surface area of the molds formed on the second wall (32) and the bottom (33) is substantially the same, or the former has a slightly larger eye. The molding equipment by mixing both forward and reverse restrictors according to claim 3.

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