JP2016203212A - Transfer press machin - Google Patents

Transfer press machin Download PDF

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JP2016203212A
JP2016203212A JP2015088297A JP2015088297A JP2016203212A JP 2016203212 A JP2016203212 A JP 2016203212A JP 2015088297 A JP2015088297 A JP 2015088297A JP 2015088297 A JP2015088297 A JP 2015088297A JP 2016203212 A JP2016203212 A JP 2016203212A
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pair
gripping members
workpiece
gripping
transfer
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JP5777192B1 (en
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清 田邉
Kiyoshi Tanabe
清 田邉
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旭精機工業株式会社
Asahi- Seiki Manufacturing Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/02Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/06Making more than one part out of the same blank; Scrapless working
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20Deep-drawing
    • B21D22/28Deep-drawing of cylindrical articles using consecutive dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02Advancing work in relation to the stroke of the die or tool
    • B21D43/04Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/05Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • B21D43/057Devices for exchanging transfer bars or grippers; Idle stages, e.g. exchangeable

Abstract

PROBLEM TO BE SOLVED: To provide a transfer press machine capable of molding a cylindrical workpiece of a high shape quality.SOLUTION: In a transfer press machine 10 of the present invention, when molding a blank material B in a cylindrical workpiece W by a blank molding punch 40, a lower pressurization member 41 supports the blank material B from below in a restriction molding hole 38A, and also descends by being driven by the blank molding punch 40. An opening-closing tool 43 reciprocatably provided on a workpiece receiving stage S1 slidingly contacts with a pair of holding members 63 and 63, and these holding members 63 and 63 open-close, and receive the cylindrical workpiece W from the blank molding punch 40.SELECTED DRAWING: Figure 6

Description

本発明は、一端有底の筒形ワークを、一列に並んだ加工ステージ群の始端側から終端側へとトランスファ装置により順次搬送して成形するトランスファプレス機に関する。   The present invention relates to a transfer press machine that sequentially conveys and forms cylindrical workpieces with one end with a transfer device from the start end side to the end side of a group of processing stages arranged in a line.
従来、この種のトランスファプレス機として、トランスファ装置の上方に備えたブランク成形ダイの絞り成形孔に、ブランク材をブランク成形パンチにより押し込んで筒形ワークに成形してからトランスファ装置に受け渡す構成のものが知られている(例えば、特許文献1参照)。   Conventionally, as this type of transfer press machine, a blank material is pushed into a drawing hole of a blank forming die provided above a transfer device by a blank forming punch to form a cylindrical workpiece, and then transferred to the transfer device. Those are known (for example, see Patent Document 1).
特開2003−071524(図1)JP2003-071524 (FIG. 1)
しかしながら、上記した従来のトランスファプレス機では、ブランク材が絞られる際にブランク成形パンチの下方に逃げ、その結果、筒形ワークの底部が下方に膨出して設計通りの形状にならないことがあった。即ち、従来のトランスファプレス機では、ブランク材から成形される筒形ワークの形状品質が低くなることがあった。   However, in the conventional transfer press described above, when the blank material is squeezed, it escapes below the blank forming punch, and as a result, the bottom of the cylindrical workpiece may bulge downward and may not have the shape as designed. . That is, in the conventional transfer press, the shape quality of the cylindrical workpiece formed from the blank material may be lowered.
本発明は、上記事情に鑑みてなされたもので、高い形状品質の筒形ワークを成形することが可能なトランスファプレス機の提供を目的とする。   The present invention has been made in view of the above circumstances, and an object thereof is to provide a transfer press machine capable of forming a cylindrical work having high shape quality.
上記目的を達成するためになされた請求項1の発明は、一端有底の筒形ワークを、一列に並んだ加工ステージ群の始端側から終端側へとトランスファ装置にて間欠的に搬送して順次成形すると共に、前記加工ステージ群より上流側のワーク受取ステージの上方に、絞り成形孔を有するブランク成形ダイを設け、ブランク成形パンチにてブランク材を前記絞り成形孔に押し込んで前記筒形ワークに成形し、前記トランスファ装置の始端側の1対の把持部材に受け渡すトランスファプレス機であって、前記始端側の1対の把持部材が、互いに接離可能に支持されかつ互いに接近する側に付勢されたトランスファプレス機において、前記ワーク受取ステージに上下動可能に設けられ、前記ブランク材を下方から支持しかつ前記ブランク成形パンチに従動して降下する下加圧部材と、前記ワーク受取ステージに往復動可能に設けられ、前記筒形ワークを受け入れる前の前記1対の把持部材に摺接してそれら把持部材を開き、前記筒形ワークを受け入れた前記1対の把持部材から離間してそれら把持部材を閉じ、前記筒形ワークを前記1対の把持部材に把持させる開閉ツールと、を備えたトランスファプレス機である。   In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a cylindrical work piece with one end is intermittently conveyed by a transfer device from the start end side to the end side of a group of processing stages arranged in a row. In addition to forming sequentially, a blank forming die having a drawing hole is provided above the workpiece receiving stage upstream from the processing stage group, and a blank material is pushed into the drawing hole by a blank forming punch, and the cylindrical workpiece is A transfer press machine that transfers to a pair of gripping members on the start end side of the transfer device, and the pair of gripping members on the start end side are supported so as to be able to come into contact with each other and approach each other. In the energized transfer press machine, the workpiece receiving stage is provided so as to be movable up and down, supports the blank material from below, and serves as the blank forming punch. A lower pressurizing member that moves and descends, and is provided so as to be reciprocally movable on the workpiece receiving stage. The cylindrical member is slidably contacted with the pair of gripping members before receiving the cylindrical workpiece, and the cylindrical members are opened. An opening / closing tool comprising: an opening / closing tool that is spaced apart from the pair of gripping members that have received the workpieces, closes the gripping members, and grips the cylindrical workpieces by the pair of gripping members.
請求項2の発明は、前記開閉ツールは、前記1対の把持部材の間に割り込んだ上端位置と、前記1対の把持部材の下方にずれた下端位置との間で上下動する請求項1に記載のトランスファプレス機である。   According to a second aspect of the present invention, the opening / closing tool moves up and down between an upper end position interrupted between the pair of gripping members and a lower end position shifted downward of the pair of gripping members. The transfer press machine described in 1.
請求項3の発明は、前記1対の把持部材の移動領域の下方には、前記絞り成形孔の延長線上に延びた直動支持孔を有する支持ベースが設けられ、前記開閉ツールは、前記直動支持孔に直動可能に支持されたツールベース部の上面から1対の摺接突部が突出した構造をなして、それら1対の摺接突部が前記1対の把持部材に摺接して前記1対の把持部材を開くように構成されると共に、前記ツールベース部のうち前記1対の摺接突部の間を上下に貫通する貫通孔に前記下加圧部材が直動可能に支持されている請求項2に記載のトランスファプレス機である。   According to a third aspect of the present invention, a support base having a linear motion support hole extending on an extension line of the drawing forming hole is provided below the movement region of the pair of gripping members, and the opening / closing tool is A pair of sliding contact projections project from the upper surface of the tool base portion supported by the dynamic support holes so as to be linearly movable, and the pair of sliding contact projections are in sliding contact with the pair of gripping members. The pair of gripping members are configured to open, and the lower pressure member can be directly moved in a through-hole penetrating vertically between the pair of sliding contact protrusions in the tool base portion. The transfer press according to claim 2, which is supported.
請求項4の発明は、前記下加圧部材の上端部には、側方に張り出したヘッド部が設けられ、前記ヘッド部が前記1対の摺接突部の間に収まるように構成された請求項3に記載のトランスファプレス機である。   According to a fourth aspect of the present invention, a head portion projecting laterally is provided at an upper end portion of the lower pressure member, and the head portion is configured to fit between the pair of sliding contact projections. A transfer press according to claim 3.
請求項5の発明は、前記開閉ツールは、前記ワーク受取ステージに向かって移動してくる前記1対の把持部材に対して前記上端位置で待機して摺接することで前記1対の把持部材を開くと共に、前記下端位置へと降下して前記1対の把持部材を閉じる請求項2乃至4の何れか1の請求項に記載のトランスファプレス機である。   According to a fifth aspect of the present invention, the opening / closing tool waits at the upper end position in sliding contact with the pair of gripping members moving toward the workpiece receiving stage so that the pair of gripping members are in contact with each other. The transfer press machine according to any one of claims 2 to 4, wherein the transfer press machine opens and closes to the lower end position to close the pair of gripping members.
請求項6の発明は、前記開閉ツールは、前記上端位置に付勢されると共に、前記下加圧部材により押し下げられて前記下端位置に移動する請求項2乃至5の何れか1の請求項に記載のトランスファプレス機である。   The invention according to claim 6 is the invention according to any one of claims 2 to 5, wherein the opening / closing tool is urged to the upper end position and is moved down to the lower end position by being pushed down by the lower pressure member. It is a transfer press machine of description.
請求項7の発明は、前記下加圧部材を駆動する駆動源としてエアシリンダを備えた請求項1乃至6の何れか1の請求項に記載のトランスファプレス機である。   A seventh aspect of the present invention is the transfer press according to any one of the first to sixth aspects, wherein an air cylinder is provided as a drive source for driving the lower pressure member.
請求項1のトランスファプレス機では、ワーク受取ステージの上方に備えたブランク成形ダイの絞り成形孔に、ブランク成形パンチによりブランク材が押し込まれて筒形ワークに成形される。その際に、下加圧部材がブランク材を下方から支持しかつ、ブランク成形パンチに従動して降下するので、従来問題になっていたブランク材の下方への逃げが抑えられ、高い形状品質の筒形ワークを成形することが可能になる。   In the transfer press machine according to the first aspect, the blank material is pushed into the drawing forming hole of the blank forming die provided above the workpiece receiving stage by the blank forming punch to form the cylindrical workpiece. At that time, since the lower pressure member supports the blank material from below and descends following the blank forming punch, the downward escape of the blank material, which has been a problem in the past, is suppressed, and high shape quality is achieved. A cylindrical workpiece can be formed.
また、筒形ワークはブランク成形パンチからトランスファ装置の始端側の1対の把持部材に受け渡される。その際、1対の把持部材を付勢力に抗して開く必要がある。ここで、本発明のトランスファプレス機では、ワーク受取ステージに往復動可能に設けられた開閉ツールが1対の把持部材に摺接してそれら把持部材の間を開き、筒形ワークを受け入れた1対の把持部材から離間してそれら把持部材を閉じるので、筒形ワークに深い傷を付けずに、ブランク成形パンチから1対の把持部材への筒形ワークの受け渡しが可能になる。この点においても、本発明のトランスファプレス機によれば、高い形状品質の筒形ワークを成形することが可能になる。   Further, the cylindrical workpiece is transferred from the blank forming punch to a pair of gripping members on the start end side of the transfer device. At that time, it is necessary to open the pair of gripping members against the urging force. Here, in the transfer press machine according to the present invention, a pair of open / close tools provided on the workpiece receiving stage so as to be able to reciprocate are slidably contacted with a pair of gripping members to open between the gripping members and receive a pair of cylindrical workpieces. Since the gripping members are closed apart from the gripping members, the cylindrical work can be transferred from the blank forming punch to the pair of gripping members without deeply scratching the cylindrical work. Also in this respect, according to the transfer press machine of the present invention, it becomes possible to form a cylindrical work having high shape quality.
一般にトランスファ装置の始端部上方でブランク材から筒形ワークを成形するトランスファプレス機では、ワーク受取ステージの周囲が、ブランク成形ダイやそれを下方から支持する支持台やトランスファ装置の構成部品によって狭くなるが、請求項2の構成では、開閉ツールが1対の把持部材の間に割り込んだ上端位置と、1対の把持部材の下方にずれた下端位置との間を上下動する配置になっているので、ブランク成形ダイや支持台等をワーク受取ステージから遠ざけて強度を低下させるようなことをすることなく、開閉ツールを設置することができる。   Generally, in a transfer press machine that forms a cylindrical workpiece from a blank material above the starting end of the transfer device, the periphery of the workpiece receiving stage is narrowed by the blank forming die, the support table that supports it from below, and the components of the transfer device. However, in the configuration of claim 2, the opening / closing tool is arranged to move up and down between the upper end position where the opening / closing tool has interrupted between the pair of gripping members and the lower end position shifted downward of the pair of gripping members. Therefore, the opening / closing tool can be installed without reducing the strength by moving the blank forming die, the support base, etc. away from the workpiece receiving stage.
請求項3及び4の構成によれば、開閉ツールと下加圧部材とをコンパクトに纏めて配置することができる。   According to the configuration of the third and fourth aspects, the opening / closing tool and the lower pressurizing member can be arranged in a compact manner.
請求項5の発明では、開閉ツールは、ワーク受取ステージに向かって移動してくる1対の把持部材に対して上端位置で待機して摺接することで1対の把持部材を開くので、1対の把持部材の無駄な待ち時間が少なくなり、トランスファプレス機の高速運転が可能になる。   According to the fifth aspect of the present invention, the opening / closing tool opens the pair of gripping members by waiting at the upper end position and slidingly contacting the pair of gripping members moving toward the workpiece receiving stage. The useless waiting time of the gripping member is reduced, and the transfer press can be operated at high speed.
請求項6のトランスファプレス機では、開閉ツールが下加圧部材により押し下げられて上端位置から下端位置に移動するので、下加圧部材と開閉ツールとの間で駆動源が共有され、簡素な構成になる。   In the transfer press according to claim 6, since the opening / closing tool is pushed down by the lower pressure member and moves from the upper end position to the lower end position, the drive source is shared between the lower pressure member and the opening / closing tool, and a simple configuration become.
請求項7のトランスファプレス機は、下加圧部材を駆動する駆動源としてエアシリンダを備えているので、下加圧部材がブランク成形パンチに従動して降下する動作を気圧調整によって容易に行うことができる。   The transfer press according to claim 7 includes an air cylinder as a drive source for driving the lower pressurizing member, so that the lower pressurizing member is easily moved by the blank forming punch to be lowered by adjusting the atmospheric pressure. Can do.
本発明の一実施形態に係るトランスファプレス機の正面図1 is a front view of a transfer press according to an embodiment of the present invention. トランスファプレス機の平断面図Cross section of transfer press machine トランスファプレス機の一部を拡大した正面図Front view of an enlarged part of a transfer press ワーク受取ステージとアイドルステージの周辺部分の正断面図Front sectional view of the area around the workpiece receiving stage and idle stage 打抜絞りプレス機の一部を拡大した側断面図An enlarged side cross-sectional view of a punching press ワーク受取ステージの周辺部分の側断面図Side sectional view of the periphery of the workpiece receiving stage 第1と第2のワーク把持部が開いた状態の平面図The top view of the state which the 1st and 2nd workpiece holding part opened 第1と第2のワーク把持部が閉じた状態の平面図The top view of the state which the 1st and 2nd work holding part closed 第1のワーク把持部と開閉ツールの平面図Plan view of first workpiece gripping part and open / close tool 開閉ツールの斜視図Open / close tool perspective view 筒形ワークの下端部が1対の把持部材の間に突入した状態の側断面図Side sectional view of a state in which the lower end portion of the cylindrical workpiece has entered between a pair of gripping members 筒形ワークが1対の把持部材に把持されるタイミングの側断面図Side sectional view of timing when cylindrical workpiece is gripped by a pair of gripping members 筒形ワークが1対の把持部材に把持されると共に、加圧部材が下死点に配置された状態の側断面図Side sectional view of a state in which the cylindrical workpiece is gripped by a pair of gripping members and the pressure member is disposed at the bottom dead center 筒形ワークからブランク成形パンチが引き抜かれた状態の側断面図Side sectional view of the blank workpiece punch withdrawn from the cylindrical workpiece
以下、本発明の一実施形態を図1〜図14に基づいて説明する。図1に示すように、本実施形態のトランスファプレス機10は、打抜絞りプレス機30と絞りプレス機20とをコモンベース11上で連結してなる。そして、打抜絞りプレス機30が、フープ材V(図6参照:コイル状に巻回された帯状の板金)から楕円状のブランク材B(図6参照)を打ち抜いてそれを断面楕円形の筒形ワークW(図2参照)に絞り成形し、その筒形ワークWを絞りプレス機20がさらに複数回に亘って絞り成形して薄型容器に成形する。そのために、絞りプレス機20は、図1に示すように、ラム21の下端部に複数のパンチ22を一列、等ピッチに並べて備えると共に、ボルスタ23上にパンチ22群に対応した複数のダイ24を一列に並べて備えている。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the transfer press machine 10 of the present embodiment is formed by connecting a punching drawing press machine 30 and a drawing press machine 20 on a common base 11. Then, the punching and drawing press 30 punches an elliptical blank B (see FIG. 6) from the hoop material V (see FIG. 6: strip-shaped sheet metal wound in a coil shape) and has an elliptical cross section. A cylindrical workpiece W (see FIG. 2) is drawn, and the cylindrical workpiece W is drawn into a thin container by the drawing press 20 a plurality of times. For this purpose, as shown in FIG. 1, the squeezing press machine 20 includes a plurality of punches 22 arranged in a row at an equal pitch at the lower end of the ram 21 and a plurality of dies 24 corresponding to the group of punches 22 on the bolster 23. Are arranged in a row.
なお、以下の説明において、パンチ22の並び方向を横方向、その横方向と直交する水平方向を前後方向、さらに、横方向のうち図1における左側(即ち、トランスファプレス機10を前方から見て左側)を始端側、右側を終端側ということとする。   In the following description, the arrangement direction of the punches 22 is the horizontal direction, the horizontal direction orthogonal to the horizontal direction is the front-rear direction, and the left side in FIG. 1 of the horizontal direction (that is, the transfer press 10 is viewed from the front). The left side is the start side, and the right side is the end side.
絞りプレス機20のラム21及びボルスタ23は、共に平面形状が横長になっていて、ラム21は、その両横部分を、コモンベース11から起立した1対のフレーム脚部25,25に上下動可能に支持されている。そして、図示しない第1サーボモータによってラム21が駆動されて、各パンチ22が筒形ワークWを各ダイ24の図示しないダイ孔に押し込んで成形する。このように各パンチ22及びダイ24により筒形ワークWの成形を行う部分が本発明に係る加工ステージS3をなし、そのような複数の加工ステージS3が、1対のフレーム脚部25,25の間に横一列に並んでいる。   The ram 21 and the bolster 23 of the squeezing press machine 20 are both horizontally long in plan view, and the ram 21 moves both lateral portions up and down to a pair of frame leg portions 25 and 25 erected from the common base 11. Supported as possible. Then, the ram 21 is driven by a first servo motor (not shown), and each punch 22 pushes the cylindrical workpiece W into a die hole (not shown) of each die 24 and forms it. In this way, the portion where the cylindrical workpiece W is formed by the punches 22 and the dies 24 forms the processing stage S3 according to the present invention, and such a plurality of processing stages S3 includes a pair of frame legs 25, 25. They are lined up in a row.
また、各ダイ24のダイ孔の奥側には、図示しないノックアウトピンが直動可能に収容されていて、パンチ22が筒形ワークWをダイ孔に押し込んで成形した後、パンチ22の上昇と共に、若しくは遅れてノックアウトピンも上昇して筒形ワークWをダイ孔から押し出す。   Further, a knockout pin (not shown) is accommodated in the back side of the die hole of each die 24 so that the punch 22 can be linearly moved. After the punch 22 pushes the cylindrical workpiece W into the die hole and molds it, the punch 22 rises. Alternatively, the knockout pin also rises with a delay and pushes the cylindrical workpiece W out of the die hole.
さらに、フレーム脚部25,25の上下方向の中間部には、図2に示したワーク搬送孔25W,25Wが形成されていて、ダイ24群の上面の延長面がワーク搬送孔25W,25W内を貫通している。   Further, the workpiece conveyance holes 25W and 25W shown in FIG. 2 are formed in the middle portion of the frame legs 25 and 25 in the vertical direction, and the extended surface of the upper surface of the die 24 group is inside the workpiece conveyance holes 25W and 25W. It penetrates.
図1に示すように、打抜絞りプレス機30は、絞りプレス機20の始端側の側方に配置され、絞りプレス機20と同様にコモンベース11から起立した1対のフレーム脚部35,35を両横に備えている。そして、フレーム脚部35,35にラム31が上下動可能に支持されて、図示しない第2サーボモータによって駆動される。また、図2に示すように、打抜絞りプレス機30のフレーム脚部35,35にも、絞りプレス機20のフレーム脚部25,25と同様にワーク搬送孔35W,35Wが形成されている。   As shown in FIG. 1, the punching and drawing press machine 30 is disposed on the side of the starting end side of the drawing press machine 20 and, like the drawing press machine 20, a pair of frame leg portions 35 erected from the common base 11. 35 on both sides. The ram 31 is supported by the frame legs 35, 35 so as to be movable up and down, and is driven by a second servo motor (not shown). As shown in FIG. 2, work conveyance holes 35 </ b> W and 35 </ b> W are also formed in the frame leg portions 35 and 35 of the punching and drawing press machine 30 in the same manner as the frame leg portions 25 and 25 of the drawing press machine 20. .
図1に示すように、1対のフレーム脚部35,35の下端寄り位置の間には、支持ベース34が固定され、その支持ベース34の上面は、ダイ24群の上面と略面一になっている。また、絞りプレス機20と打抜絞りプレス機30との間には、板状の連絡ベース12が架け渡され、その連絡ベース12の両端部がワーク搬送孔25W,35W内に受容されている。そして、図2に示すように、支持ベース34の上面の一部と、連絡ベース12の上面と、絞りプレス機20のダイ24群の上面とから、打抜絞りプレス機30と絞りプレス機20とに跨がって延びた帯状のワーク搬送面13が構成されている。   As shown in FIG. 1, a support base 34 is fixed between positions near the lower ends of the pair of frame legs 35, 35, and the upper surface of the support base 34 is substantially flush with the upper surface of the group of dies 24. It has become. Further, a plate-like communication base 12 is bridged between the drawing press machine 20 and the punching drawing press machine 30, and both end portions of the communication base 12 are received in the work transport holes 25W and 35W. . As shown in FIG. 2, the punching drawing press 30 and the drawing press 20 are formed from a part of the upper surface of the support base 34, the upper surface of the communication base 12, and the upper surface of the die 24 group of the drawing press 20. A belt-like workpiece transfer surface 13 is formed extending across.
図6に示すように、支持ベース34の上面のうちワーク搬送面13を前後方向で挟んだ両側縁部には支持台36D,36Dが備えられ、それら支持台36D,36D上に打抜ダイホルダ36が差し渡されている。また、打抜ダイホルダ36のうちワーク搬送面13の幅方向の中央に対向する位置には、ワーク降下孔36Aが上下方向に貫通している。ワーク降下孔36Aは、断面楕円形をなし、その楕円の長軸方向がワーク搬送面13の幅方向を向いている。   As shown in FIG. 6, support bases 36D and 36D are provided on both side edges of the upper surface of the support base 34 sandwiching the work transfer surface 13 in the front-rear direction, and a punching die holder 36 is provided on the support bases 36D and 36D. Has been handed over. Further, a workpiece lowering hole 36A penetrates in the vertical direction at a position of the punching die holder 36 that faces the center in the width direction of the workpiece conveyance surface 13. The work lowering hole 36 </ b> A has an elliptical cross section, and the major axis direction of the ellipse faces the width direction of the work transfer surface 13.
打抜ダイホルダ36の上面には、ワーク降下孔36Aの開口縁を段付き状に陥没させてダイ受容凹部36Bが形成され、そこに板状のブランク成形ダイ38が受容されると共に、その上に打抜ダイ37が重ねて受容されている。また、ブランク成形ダイ38には、ワーク降下孔36Aより小さい楕円形状の絞り成形孔38Aが形成され、打抜ダイ37には、ワーク降下孔36Aより大きい楕円形状の打抜孔37Aが形成されている。なお、打抜孔37Aの上縁角部はエッジ構造をなし、絞り成形孔38Aの上縁角部は丸みを帯びている。   On the upper surface of the punching die holder 36, a die receiving recess 36B is formed by recessing the opening edge of the work lowering hole 36A in a stepped shape, and a plate-shaped blank forming die 38 is received therein, and on the die receiving recess 36B. A punching die 37 is received in piles. The blank forming die 38 is formed with an elliptical drawing hole 38A smaller than the work lowering hole 36A, and the punching die 37 is formed with an elliptical punching hole 37A larger than the work lowering hole 36A. . The upper edge corner of the punching hole 37A has an edge structure, and the upper edge corner of the drawing hole 38A is rounded.
図1に示すように、打抜絞りプレス機30のラム31は、フレーム脚部35,35に直動可能に支持された第1ラム31Aと、その第1ラム31Aの中央を貫通した第2ラム31Bとからなる。また、第1ラム31Aには、図6に示した楕円筒状の打抜パンチ39が取り付けられ、第2ラム31Bには、打抜パンチ39の内側に嵌合された楕円柱状のブランク成形パンチ40が取り付けられている。そして、打抜ダイ37上にフープ材Vが敷設された状態で、打抜パンチ39が打抜孔37Aに突入してフープ材Vからブランク材Bを打抜く。そして、ブランク成形ダイ38と打抜きパンチ39とでブランク材Bを挟んだ状態で、ブランク材Bをブランク成形パンチ40が絞り成形孔38A内に押し込んで筒形ワークWに成形し、さらに降下してワーク降下孔36Aの下方の本発明に係るワーク受取ステージS1まで筒形ワークWを移動する(図13参照)。   As shown in FIG. 1, the ram 31 of the punching and drawing press 30 includes a first ram 31A supported by the frame leg portions 35 and 35 so as to be linearly movable, and a second piercing through the center of the first ram 31A. It consists of ram 31B. 6 is attached to the first ram 31A, and the elliptical column-shaped blank forming punch fitted inside the punching punch 39 is attached to the second ram 31B. 40 is attached. Then, with the hoop material V laid on the punching die 37, the punching punch 39 enters the punching hole 37 </ b> A and punches the blank material B from the hoop material V. Then, in a state where the blank material B is sandwiched between the blank forming die 38 and the punching punch 39, the blank material B is pushed into the drawing hole 38A by the blank forming punch 40 and formed into the cylindrical workpiece W, and further lowered. The cylindrical workpiece W is moved to the workpiece receiving stage S1 according to the present invention below the workpiece lowering hole 36A (see FIG. 13).
図5に示すように、支持ベース34には、ワーク降下孔36Aの同軸上に直動支持孔18が貫通形成されている。そして、その直動支持孔18内から延びた下加圧部材41がブランク成形パンチ40との間でブランク材Bを挟んだ状態となってブランク成形パンチ40と共に降下し、絞り成形中にブランク材Bがブランク成形パンチ40の下面から離れて下方に膨らむことを規制する。   As shown in FIG. 5, a linear motion support hole 18 is formed through the support base 34 on the same axis as the work lowering hole 36A. Then, the lower pressure member 41 extending from the linear motion support hole 18 is in a state of sandwiching the blank material B with the blank forming punch 40 and descends together with the blank forming punch 40, and the blank material is drawn during drawing. It restricts B from separating from the lower surface of the blank forming punch 40 and bulging downward.
具体的には、下加圧部材41は、上から順に並んで結合された第1〜第3の加圧部材構成部41A,41B,41Cからなる。第1の加圧部材構成部41Aは、平面形状がワーク搬送面13の幅方向に延びた長方形の板部材であって、その四隅の角部は円弧状に面取りされている(図9参照)。第2の加圧部材構成部41Bは、平面形状が、第1の加圧部材構成部41Aより一回り小さい長方形のブロック構造をなしている。第3の加圧部材構成部41Cは、上下方向の延びた帯板状をなし、その平面形状は、図5に示すように前後方向では第2の加圧部材構成部41Bより小さく、図4に示すように横方向では第2の加圧部材構成部41Bより僅かに大きくなっている(図9参照)。なお、第3の加圧部材構成部41Cの長手方向の中間部には、1対の軽量孔41K(図5参照)が形成されている。また、第1及び第2の加圧部材構成部41A,41Bから本発明に係るヘッド部41Hが構成されている。   Specifically, the lower pressurizing member 41 includes first to third pressurizing member constituting portions 41A, 41B, and 41C that are coupled in order from the top. The first pressure member constituting portion 41A is a rectangular plate member whose planar shape extends in the width direction of the workpiece conveying surface 13, and the corners of the four corners thereof are chamfered in an arc shape (see FIG. 9). . The second pressure member constituting portion 41B has a rectangular block structure whose planar shape is slightly smaller than that of the first pressure member constituting portion 41A. The third pressure member constituting portion 41C has a strip shape extending in the vertical direction, and its planar shape is smaller than that of the second pressure member constituting portion 41B in the front-rear direction as shown in FIG. As shown in FIG. 9, it is slightly larger than the second pressure member constituting portion 41B in the lateral direction (see FIG. 9). A pair of lightweight holes 41K (see FIG. 5) is formed in the middle portion in the longitudinal direction of the third pressure member constituting portion 41C. Further, the head portion 41H according to the present invention is constituted by the first and second pressure member constituting portions 41A and 41B.
図5に示すように、下加圧部材41の下端部には中継ロッド41Dが連結され、その中継ロッド41Dの下端部にエアシリンダ42の直動ロッド42Rが連結されている。また、支持ベース34の下面には、支持板19が直動支持孔18を覆った状態に固定され、その支持板19を上下に貫通するロッド挿通孔19Aに中継ロッド41Dが上下動可能に挿通されている。さらに、支持板19のうちロッド挿通孔19Aの周囲からは複数の支持シャフト19Sが垂下され、それら支持シャフト19Sの下端部にエアシリンダ42が固定されている。そして、エアシリンダ42により、下加圧部材41が上下に駆動される。   As shown in FIG. 5, a relay rod 41D is connected to the lower end portion of the lower pressure member 41, and a direct acting rod 42R of the air cylinder 42 is connected to the lower end portion of the relay rod 41D. Further, the support plate 19 is fixed to the lower surface of the support base 34 so as to cover the linear motion support hole 18, and the relay rod 41 </ b> D is inserted through a rod insertion hole 19 </ b> A penetrating through the support plate 19 in a vertically movable manner. Has been. Furthermore, a plurality of support shafts 19S are suspended from the periphery of the rod insertion hole 19A in the support plate 19, and an air cylinder 42 is fixed to the lower ends of the support shafts 19S. Then, the lower pressure member 41 is driven up and down by the air cylinder 42.
図2に示すように、ワーク搬送面13には、ワーク受取ステージS1と加工ステージS3群との間に複数のアイドルステージS2が備えられている。それらアイドルステージS2群は、後述するトランスファ装置60が筒形ワークWを間欠的に搬送する際に、筒形ワークWが加工されずに停止させられる部位であり、加工ステージS3群のピッチと同じピッチで並んでいる。また、アイドルステージS2群のうち始端側の1つのアイドルステージS2(以下、これを「先頭のアイドルステージS2」という)は、打抜絞りプレス機30の支持ベース34上に位置し、残りの複数のアイドルステージS2は、連絡ベース12上に位置している。なお、以下の説明において、これらワーク受取ステージS1とアイドルステージS2と加工ステージS3とを区別しない場合には、それらを単に「ステージ」という。   As shown in FIG. 2, the workpiece transfer surface 13 is provided with a plurality of idle stages S2 between the workpiece receiving stage S1 and the processing stage S3 group. The idle stage S2 group is a portion where the cylindrical workpiece W is stopped without being processed when the transfer device 60 described later intermittently conveys the cylindrical workpiece W, and has the same pitch as the processing stage S3 group. Lined up on the pitch. In addition, one idle stage S2 (hereinafter referred to as “first idle stage S2”) of the idle stage S2 group is located on the support base 34 of the punching and drawing press 30 and the remaining plural stages. The idle stage S2 is located on the communication base 12. In the following description, when the workpiece receiving stage S1, the idle stage S2, and the machining stage S3 are not distinguished, they are simply referred to as “stages”.
図2に示すように、ワーク搬送面13上には、筒形ワークWを始端側から終端側へと搬送するためにトランスファ装置60が備えられている。トランスファ装置60は、横方向に延びたトランスファスライド61を有する。トランスファスライド61は、ワーク搬送面13の幅方向の両側縁部に重ねて配置された帯板状の1対のスライドレール61A,61Aの端部間を1対の連絡部材61B,61Bで連絡してなる。また、トランスファスライド61の全長はワーク搬送面13より長く、トランスファスライド61の両端部は、図1に示すようにトランスファプレス機10の横方向の一端と他端とから突出している。   As shown in FIG. 2, a transfer device 60 is provided on the workpiece transfer surface 13 to transfer the cylindrical workpiece W from the start end side to the end end side. The transfer device 60 has a transfer slide 61 extending in the lateral direction. The transfer slide 61 communicates between the ends of a pair of strip-like slide rails 61A and 61A arranged on both side edges in the width direction of the workpiece conveying surface 13 by a pair of connecting members 61B and 61B. It becomes. Further, the entire length of the transfer slide 61 is longer than the work conveying surface 13, and both end portions of the transfer slide 61 protrude from one end and the other end of the transfer press machine 10 as shown in FIG.
図1に示すように、トランスファスライド61の始端部には、打抜絞りプレス機30の外側面に取り付けられたボール螺子機構65のボールナット65Nが固定されている。そして、ボール螺子機構65が搬送用サーボモータ65Mにより駆動されて、トランスファスライド61が往復動する。そのトランスファスライド61の往復動のピッチは、絞りプレス機20のパンチ22群のピッチと同じになっている。   As shown in FIG. 1, a ball nut 65 </ b> N of a ball screw mechanism 65 attached to the outer surface of the punching and drawing press 30 is fixed to the start end portion of the transfer slide 61. Then, the ball screw mechanism 65 is driven by the conveying servo motor 65M, and the transfer slide 61 reciprocates. The pitch of the reciprocating movement of the transfer slide 61 is the same as the pitch of the punch 22 group of the drawing press machine 20.
図2に示すように、トランスファスライド61の長手方向には、複数のワーク把持部62が並べて備えられている。それらワーク把持部62群のピッチは、パンチ22群のピッチと同じで、ワーク把持部62群の数は、ステージ群の数と同じになっている。   As shown in FIG. 2, a plurality of workpiece gripping portions 62 are arranged in the longitudinal direction of the transfer slide 61. The pitch of the workpiece gripping part 62 group is the same as the pitch of the punch 22 group, and the number of the workpiece gripping part 62 group is the same as the number of the stage group.
各ワーク把持部62には、ステージを挟んで対峙する1対の把持部材63,63が備えられている。そして、トランスファスライド61が可動範囲の始端側に位置したときに、1対の把持部材63,63が互いに接近して(以下、適宜、これを「1対の把持部材63,63が閉じて」又は「ワーク把持部62が閉じて」という)筒形ワークWを把持し、トランスファスライド61が可動範囲の終端側に位置したときに、1対の把持部材63,63が互いに離間して(以下、適宜、これを「1対の把持部材63,63が開いて」又は
「ワーク把持部62が開いて」という)筒形ワークWを解放する。これにより、筒形ワークWが間欠的に始端側から終端側のステージへと、順次、搬送される。
Each workpiece gripping portion 62 is provided with a pair of gripping members 63 and 63 that face each other with the stage interposed therebetween. When the transfer slide 61 is positioned on the start end side of the movable range, the pair of gripping members 63 and 63 approach each other (hereinafter, this is referred to as “the pair of gripping members 63 and 63 are closed”). Alternatively, when the cylindrical workpiece W is gripped and the transfer slide 61 is positioned at the end of the movable range (hereinafter referred to as “the workpiece gripping portion 62 is closed”), the pair of gripping members 63 and 63 are separated from each other (hereinafter referred to as “the workpiece gripping portion 62 is closed”) As appropriate, the cylindrical workpiece W is released (referred to as “a pair of gripping members 63, 63 is opened” or “a workpiece gripping portion 62 is opened”). Thereby, the cylindrical workpiece W is intermittently conveyed sequentially from the start end side to the end side stage.
ワーク把持部62群は、始端側の第1のワーク把持部62Aと、始端側の2番目から所定番目までの複数の第2のワーク把持部62Bと、残りの複数の第3のワーク把持部62Cとの3種類に分けられ、各種類のワーク把持部62毎に把持部材63,63の開閉機構が異なる。また、第2のワーク把持部62B群は、アイドルステージS2より1つ少なく、第3のワーク把持部62C群は、加工ステージS3より1つ多くなっている。   The work gripping part 62 group includes a first work gripping part 62A on the start end side, a plurality of second work gripping parts 62B from the second to a predetermined number on the start end side, and a plurality of remaining third work gripping parts. The opening / closing mechanism of the gripping members 63 and 63 is different for each type of work gripping portion 62. Further, the second work gripping part 62B group is one less than the idle stage S2, and the third work gripping part 62C group is one more than the machining stage S3.
第2及び第3のワーク把持部62B,62Cには、それら自体に駆動源が備えられている。即ち、各第3のワーク把持部62Cには、1対の小型エアシリンダ66,66を1対のスライドレール61A,61Aに固定して備えられている。そして、各小型エアシリンダ66の1対の直動ロッド66Aの先端に把持部材63が固定されている。これにより、第3のワーク把持部62C群は、それぞれが任意のタイミングで開閉することができる。そして、第3のワーク把持部62Cは、一のステージでパンチ22とノックアウトピンとに挟まれている筒形ワークWを横方向から受け入れて把持し、その把持した筒形ワークWを隣のステージに搬送してそこで筒形ワークWがパンチ22とノックアウトピンとに挟まれたときに開いて筒形ワークWを解放する。   The second and third workpiece gripping portions 62B and 62C are each provided with a drive source. That is, each third work gripping portion 62C is provided with a pair of small air cylinders 66, 66 fixed to a pair of slide rails 61A, 61A. And the holding member 63 is being fixed to the front-end | tip of a pair of linear motion rod 66A of each small air cylinder 66. As shown in FIG. As a result, the third workpiece gripping part 62C group can be opened and closed at an arbitrary timing. Then, the third workpiece gripping part 62C receives and grips the cylindrical workpiece W sandwiched between the punch 22 and the knockout pin in one stage from the lateral direction, and places the gripped cylindrical workpiece W on the next stage. When the cylindrical workpiece W is conveyed and sandwiched between the punch 22 and the knockout pin, the cylindrical workpiece W is opened and released.
第2のワーク把持部62B群には、それらの全てに共通した1対の帯板状のサブスライダ64,64が備えられている。それら1対のサブスライダ64,64は、1対のスライドレール61A,61A上に重ねられて前後方向に直動可能に支持されている。そして、前側のサブスライダ64に、第2のワーク把持部62B群における前側の複数の把持部材63の全てが固定され、後側のサブスライダ64に、第2のワーク把持部62B群における後側の複数の把持部材63の全てが固定されている。また、1対のサブスライダ64,64は図示しないエア駆動源により互いに接離するように駆動され、これにより、第2のワーク把持部62群全体が同時に開閉される。   The second workpiece gripping part 62B group is provided with a pair of strip sliders 64, 64 that are common to all of them. The pair of sub-sliders 64, 64 are overlapped on the pair of slide rails 61A, 61A and supported so as to be linearly movable in the front-rear direction. All of the plurality of front gripping members 63 in the second work gripping portion 62B group are fixed to the front subslider 64, and the rear side in the second work gripping portion 62B group is fixed to the rear subslider 64. All of the plurality of gripping members 63 are fixed. Further, the pair of sub-sliders 64 and 64 are driven so as to be brought into contact with and separated from each other by an air driving source (not shown), whereby the entire second workpiece gripping part 62 group is simultaneously opened and closed.
また、図3に示すように、アイドルステージS2群には、前記した加工ステージS3におけるパンチ22のように、第2のワーク把持部62との間で筒形ワークWの受け渡しを行うためのダミーピン14又はダミーパンチ26が設けられている。具体的には、先頭のアイドルステージS2を除くアイドルステージS2群の上方には、横方向に延びた共通のパンチ支持プレート27が備えられ、そのパンチ支持プレート27の下面に各アイドルステージS2に対応したダミーパンチ26が備えられている。また、パンチ支持プレート27は、エアシリンダ28によって上下に駆動される。そして、各ダミーパンチ26が連絡ベース12との間で筒形ワークWを挟んで保持し、第2のワーク把持部62Bとの間で筒形ワークWの受け渡しが行われる。   As shown in FIG. 3, the idle stage S2 group includes dummy pins for transferring the cylindrical workpiece W to and from the second workpiece gripping portion 62, like the punch 22 in the machining stage S3 described above. 14 or a dummy punch 26 is provided. Specifically, a common punch support plate 27 extending in the lateral direction is provided above the idle stage S2 group excluding the leading idle stage S2, and the lower surface of the punch support plate 27 corresponds to each idle stage S2. The dummy punch 26 is provided. The punch support plate 27 is driven up and down by an air cylinder 28. Each dummy punch 26 holds the cylindrical workpiece W with the communication base 12, and the cylindrical workpiece W is transferred to and from the second workpiece gripping portion 62B.
また、先頭のアイドルステージS2には、図4に示すように、ワーク搬送面13から下方に直動支持孔34Aが穿孔されていて、その直動支持孔34A内に昇降ユニット16が収容されている。昇降ユニット16は、直動支持孔34A内に上下動可能に支持されたメインボディ16Hを有する。メインボディ16Hの上面には、ワーク搬送面13の幅方向と平行に配置された対向摺接突部16Tが備えられ、メインボディ16Hの内部には圧縮コイルばね15を収容したばね収容室16Cを設けられている。また、ばね収容室16Cの上部のうち対向摺接突部16Tに挟まれた部分には、ガイド孔16Aが貫通形成されている。前述のダミーピン14は、そのガイド孔16Aに直動可能に嵌合されて圧縮コイルばね15により上方に付勢され、通常は対向摺接突部16Tより上方に突出している。   Further, as shown in FIG. 4, the leading idle stage S2 has a linear motion support hole 34A formed downward from the workpiece transfer surface 13, and the elevating unit 16 is accommodated in the linear motion support hole 34A. Yes. The elevating unit 16 has a main body 16H supported in the linear motion support hole 34A so as to be movable up and down. On the upper surface of the main body 16H, an opposing sliding contact protrusion 16T disposed in parallel with the width direction of the workpiece transfer surface 13 is provided, and a spring accommodating chamber 16C that accommodates the compression coil spring 15 is provided inside the main body 16H. Is provided. In addition, a guide hole 16A is formed through the portion of the upper portion of the spring accommodating chamber 16C that is sandwiched between the opposing sliding contact protrusions 16T. The aforementioned dummy pin 14 is fitted in the guide hole 16A so as to be linearly movable, is urged upward by the compression coil spring 15, and normally protrudes upward from the opposing sliding contact protrusion 16T.
さらには、打抜ダイホルダ36の下面のうち直動支持孔34Aとの対向部分にはパッド36Pが敷設されている。そして、図3に示したエアシリンダ17によって昇降ユニット16が上昇してダミーピン14で筒形ワークWを下方から押し上げると共に、筒形ワークWをダミーピン14とパッド36Pとの間に挟んで保持することで、第2のワーク把持部62との間で筒形ワークWの受け渡しが行われる。なお、対向摺接突部16Tは、次述する第1のワーク把持部62Aの把持プレート69,69を押し広げために使用される。   Furthermore, a pad 36P is laid on a portion of the lower surface of the punching die holder 36 facing the linear motion support hole 34A. Then, the lifting unit 16 is raised by the air cylinder 17 shown in FIG. 3 to push up the cylindrical workpiece W from below with the dummy pins 14 and hold the cylindrical workpiece W between the dummy pins 14 and the pads 36P. Thus, the cylindrical workpiece W is transferred to and from the second workpiece gripping portion 62. Note that the opposing sliding contact projection 16T is used for expanding the grip plates 69 and 69 of the first workpiece gripping portion 62A described below.
図6に示すように、第1のワーク把持部62Aは、スライドレール61A,61Aに固定された把持部材支持ブロック67,67を有する。各把持部材支持ブロック67には、ステージに向かって開口したガイド孔67Aが形成されている。また、第1のワーク把持部62Aの各把持部材63は、把持プレート69の裏面から直動ロッド63Aが延びた構造をなし、直動ロッド63Aが把持部材支持ブロック67のガイド孔67Aに直動可能に嵌合されている。また、ガイド孔67Aの奥面と直動ロッド63Aとの間には圧縮コイルばね68が備えられ、各把持部材63をステージ側に付勢している。さらに、ガイド孔67Aの内側面からガイドピン67Bが突出していて、直動ロッド63Aの側面に形成された規制溝63Bに係合し、これにより把持部材63の可動範囲が制限されている。なお、ガイド孔67Aの内面は、摺動メタルによって覆われている。   As shown in FIG. 6, the first workpiece gripping portion 62A has gripping member support blocks 67 and 67 fixed to the slide rails 61A and 61A. Each gripping member support block 67 is formed with a guide hole 67A that opens toward the stage. Further, each gripping member 63 of the first workpiece gripping portion 62A has a structure in which the linear motion rod 63A extends from the back surface of the gripping plate 69, and the linear motion rod 63A is linearly moved into the guide hole 67A of the gripping member support block 67. It can be fitted. Further, a compression coil spring 68 is provided between the inner surface of the guide hole 67A and the linear motion rod 63A, and each gripping member 63 is urged toward the stage. Further, a guide pin 67B protrudes from the inner side surface of the guide hole 67A and engages with a regulation groove 63B formed on the side surface of the linear motion rod 63A, thereby limiting the movable range of the gripping member 63. The inner surface of the guide hole 67A is covered with a sliding metal.
図4に示すように、把持プレート69は、前後方向から見ると横長の長方形をなしている。また、図6に示すように、直動ロッド63Aの先端部は、把持プレート69の裏面の横方向の中央における上寄り位置に配置され、把持プレート69の下面がワーク搬送面13に隣接している。   As shown in FIG. 4, the gripping plate 69 has a horizontally long rectangle when viewed from the front-rear direction. Further, as shown in FIG. 6, the distal end portion of the linear motion rod 63 </ b> A is disposed at an upper position in the center in the lateral direction of the back surface of the gripping plate 69, and the bottom surface of the gripping plate 69 is adjacent to the work transport surface 13. Yes.
図7に示すように把持プレート69の横方向の中央には、筒形ワークWの外面形状に対応した円弧溝69Aが設けられている。図6に示すように、円弧溝69Aは、把持プレート69の上下方向の全体に亘って延びている。また、円弧溝69Aのうち上端寄り位置より上側部分は段付き状に浅くなっていて、その上端寄り位置の段差面が筒形ワークWの上面に係止するための冠払係止部69Bになっている。   As shown in FIG. 7, an arcuate groove 69 </ b> A corresponding to the outer surface shape of the cylindrical workpiece W is provided at the center in the lateral direction of the gripping plate 69. As shown in FIG. 6, the arc groove 69 </ b> A extends over the entire holding plate 69 in the vertical direction. Further, the upper portion of the circular arc groove 69A from the position near the upper end is shallower in a stepped shape, and the stepped surface at the position near the upper end is used as a crowning locking portion 69B for locking to the upper surface of the cylindrical workpiece W. It has become.
なお、把持プレート69全体は金属部材で構成され、その金属部材のうち把持プレート69の表側面における横方向の中央に樹脂部材69Jが埋め込まれている。また、樹脂部材69Jは、上下方向においては中間部より上側に配置され、円弧溝69Aのうち上下方向の中間部より上側部分が樹脂部材69Jによって構成されている。   The entire gripping plate 69 is made of a metal member, and a resin member 69J is embedded in the center of the metal member in the lateral direction on the front side surface of the gripping plate 69. Further, the resin member 69J is disposed above the intermediate portion in the vertical direction, and the upper portion of the circular arc groove 69A from the intermediate portion in the vertical direction is constituted by the resin member 69J.
把持プレート69の下端部には、把持プレート69の下面と表側面との角部を面取りして下摺動面69Cが形成されている。下摺動面69Cは、例えば、上下方向に対して略20〜35度の角度で傾斜している。また、図7に示すように、把持プレート69の横方向の両端部には、把持プレート69の横方向の両端面と表側面との角部を面取りして横摺動面69D,69Dが形成されている。これら横摺動面69D,69Dは、例えば、横方向に対して略20〜35度の角度で傾斜している。   A lower sliding surface 69 </ b> C is formed at the lower end portion of the gripping plate 69 by chamfering the corners between the lower surface and the front side surface of the gripping plate 69. For example, the lower sliding surface 69C is inclined at an angle of approximately 20 to 35 degrees with respect to the vertical direction. Further, as shown in FIG. 7, lateral sliding surfaces 69 </ b> D and 69 </ b> D are formed at both lateral ends of the gripping plate 69 by chamfering corners between the lateral end surfaces and the front side surface of the gripping plate 69. Has been. These lateral sliding surfaces 69D and 69D are inclined at an angle of approximately 20 to 35 degrees with respect to the lateral direction, for example.
第1のワーク把持部62Aは、上記した構成の通り駆動源を備えていないので、把持部材63,63に外力を受けて開閉される。そのために、図4に示すように、アイドルステージS2には、前述した対向摺接突部16Tが備えられ、ワーク受取ステージS1には、本発明に係る開閉ツール43が備えられている。   Since the first workpiece gripping portion 62A does not include a drive source as described above, the gripping members 63 and 63 are opened and closed by receiving external force. For this purpose, as shown in FIG. 4, the idle stage S2 is provided with the above-described opposing sliding contact protrusion 16T, and the workpiece receiving stage S1 is provided with the opening / closing tool 43 according to the present invention.
図10に示すように、開閉ツール43は、ブロック部43A(本発明の「ツールベース部」に相当する)の上面から1対の摺接突部44,44が突出した構造をなしている。図9に示すように、ブロック部43Aは、平面形状がワーク搬送面13の幅方向に延びた長方形になっていて、その長辺方向の両端部に摺接突部44,44が配置されている。これに対し、図6に示すように直動支持孔18の上部内面には、ブロック部43Aの平面形状に対応した長方形の支持孔47Aを有する支持スリーブ47が嵌合されている。そして、開閉ツール43が支持孔47Aに嵌合されて直動可能に支持されている。また、図10に示すように、ブロック部43Aのうち摺接突部44,44に挟まれた部分には、上下方向に断面長方形の貫通孔43Dが貫通している。そして、図6に示すように、貫通孔43Dに下加圧部材41の第3の加圧部材構成部41Cが直動可能に支持している。   As shown in FIG. 10, the opening / closing tool 43 has a structure in which a pair of sliding contact protrusions 44, 44 protrude from the upper surface of a block part 43 </ b> A (corresponding to a “tool base part” of the present invention). As shown in FIG. 9, the block portion 43 </ b> A has a rectangular shape in which the planar shape extends in the width direction of the workpiece conveyance surface 13, and sliding contact protrusions 44 and 44 are arranged at both ends in the long side direction. Yes. On the other hand, as shown in FIG. 6, a support sleeve 47 having a rectangular support hole 47 </ b> A corresponding to the planar shape of the block portion 43 </ b> A is fitted to the upper inner surface of the linear motion support hole 18. The opening / closing tool 43 is fitted in the support hole 47A and supported so as to be linearly movable. As shown in FIG. 10, a through hole 43 </ b> D having a rectangular cross section extends in the vertical direction in a portion of the block portion 43 </ b> A sandwiched between the sliding contact projections 44, 44. And as shown in FIG. 6, the 3rd pressurization member structure part 41C of the lower pressurization member 41 is supported by the through-hole 43D so that a linear motion is possible.
図5に示すように、開閉ツール43の下面における長手方向の両端部からは1対の支持シャフト48,48が垂下され、支持板19に形成された支持孔19B,19Bを貫通している。また、支持シャフト48,48の下端部に螺合されたナット19N,19Nが支持板19の下面に当接することで、開閉ツール43が可動範囲の上端位置に位置決めされるようになっている。さらに、支持シャフト48,48には圧縮コイルばね49,49が挿通され、それら圧縮コイルばね49,49が支持板19と開閉ツール43との間で突っ張り状態になって開閉ツール43を上端位置に付勢している。そして、図6に示すように、開閉ツール43が上端位置に配置されると、1対の摺接突部44,44がワーク搬送面13より上方に突出して第1のワーク把持部62Aの1対の把持部材63,63の間に割り込み、圧縮コイルばね68,68に抗して第1のワーク把持部62Aを開いた状態に保持する。   As shown in FIG. 5, a pair of support shafts 48, 48 are suspended from both ends in the longitudinal direction on the lower surface of the opening / closing tool 43, and pass through support holes 19 </ b> B, 19 </ b> B formed in the support plate 19. Further, the nuts 19N and 19N screwed to the lower ends of the support shafts 48 and 48 come into contact with the lower surface of the support plate 19, so that the opening / closing tool 43 is positioned at the upper end position of the movable range. Further, compression coil springs 49, 49 are inserted into the support shafts 48, 48, and the compression coil springs 49, 49 are in a stretched state between the support plate 19 and the opening / closing tool 43, and the opening / closing tool 43 is set to the upper end position. Energized. Then, as shown in FIG. 6, when the opening / closing tool 43 is disposed at the upper end position, the pair of sliding contact projections 44, 44 protrudes upward from the workpiece transfer surface 13 and 1 of the first workpiece gripping portion 62 </ b> A. An interruption is made between the pair of gripping members 63, 63, and the first work gripping portion 62A is held open against the compression coil springs 68, 68.
図10に示すように、1対の摺接突部44,44の横方向の中央には、上面から下端寄り位置に亘って縦溝44A,44Aが形成されている。そして、下加圧部材41が開閉ツール43に対して相対的に下方に移動したときに、ヘッド部41Hが1対の摺接突部44,44の間に収まる。具体的には、図11に示すように、第1の加圧部材構成部41Aにおける長手方向の両端部が縦溝44A,44Aに受容されかつ、第2の加圧部材構成部41Bの下面が、開閉ツール43の貫通孔43Dの開口縁に当接する。そこから、さらに、下加圧部材41が可動範囲の下端位置まで移動すると、開閉ツール43が下加圧部材41に押し下げられて、図12に示すように、1対の摺接突部44,44が上端部を除く全体が支持孔47A内に没入する。そして、1対の把持部材63,63が圧縮コイルばね68,68の弾発力によって互いに接近し、第1のワーク把持部62Aが閉じた状態になる。   As shown in FIG. 10, vertical grooves 44 </ b> A and 44 </ b> A are formed in the center in the lateral direction of the pair of sliding contact projections 44 and 44 from the upper surface to the position near the lower end. When the lower pressure member 41 moves downward relative to the opening / closing tool 43, the head portion 41H is accommodated between the pair of sliding contact projections 44, 44. Specifically, as shown in FIG. 11, both longitudinal ends of the first pressure member constituting portion 41A are received in the longitudinal grooves 44A and 44A, and the lower surface of the second pressure member constituting portion 41B is Then, it abuts against the opening edge of the through hole 43D of the opening / closing tool 43. Then, when the lower pressure member 41 further moves to the lower end position of the movable range, the opening / closing tool 43 is pushed down by the lower pressure member 41, and as shown in FIG. 12, a pair of sliding contact projections 44, The whole 44 except the upper end portion is immersed in the support hole 47A. Then, the pair of gripping members 63, 63 approach each other by the elastic force of the compression coil springs 68, 68, and the first work gripping portion 62A is closed.
なお、図11に示すように、第2の加圧部材構成部41Bが開閉ツール43の貫通孔43Dの開口縁に当接した状態では、第1の加圧部材構成部41Aの上面は、摺接突部44の上面と略面一になり、第1の加圧部材構成部41Aの下面は縦溝44Aの底面から僅かに浮いた状態になる。   As shown in FIG. 11, in the state where the second pressure member constituting portion 41B is in contact with the opening edge of the through hole 43D of the opening / closing tool 43, the upper surface of the first pressure member constituting portion 41A is slid. It becomes substantially flush with the upper surface of the contact projection 44, and the lower surface of the first pressure member constituting portion 41A is slightly lifted from the bottom surface of the vertical groove 44A.
図10に示すように、各摺接突部44の上端部には、開閉ツール43の前後方向の端部に配置された側面と上面との角部を面取りして上摺動面46が形成されている。また、図6に示すように、上摺動面46の傾斜角は、把持部材63の下摺動面69Cと同じになっている。そして、摺接突部44,44が把持部材63,63の間から下方に退避する際に、上摺動面46と下摺動面69Cとが摺接し、第1のワーク把持部62Aの閉塞動作が滑らかに行われる。   As shown in FIG. 10, an upper sliding surface 46 is formed at the upper end portion of each sliding contact projection 44 by chamfering the corner portion between the side surface and the upper surface arranged at the end portion in the front-rear direction of the opening / closing tool 43. Has been. Further, as shown in FIG. 6, the inclination angle of the upper sliding surface 46 is the same as that of the lower sliding surface 69 </ b> C of the gripping member 63. When the sliding contact projections 44 and 44 are retracted downward from between the gripping members 63 and 63, the upper sliding surface 46 and the lower sliding surface 69C are in sliding contact with each other, and the first workpiece gripping portion 62A is closed. The operation is smooth.
図10に示すように、各摺接突部44の横方向の両端部には、開閉ツール43の前後方向の端部に配置された側面と横方向の両端に配置された両側面との両角部を面取りして1対の横摺動面45,45が形成されている。また、図9に示すように、横摺動面45,45の傾斜角は、把持部材63の横摺動面69D,69Dと同じになっている。そして、第1のワーク把持部62Aが閉じた状態でアイドルステージS2からワーク受取ステージS1に戻ってくる際に開閉ツール43が上端位置に配置されていて、把持部材63の横摺動面69Dと開閉ツール43の横摺動面45との摺接によって摺接突部44,44が把持部材63,63の間に割り込み、第1のワーク把持部62Aが開かれる。   As shown in FIG. 10, at both ends in the horizontal direction of each sliding contact projection 44, both angles of the side surface arranged at the front-rear direction end portion of the opening / closing tool 43 and the both side surfaces arranged at both ends in the horizontal direction are provided. A pair of lateral sliding surfaces 45, 45 are formed by chamfering the portion. Further, as shown in FIG. 9, the inclination angle of the lateral sliding surfaces 45, 45 is the same as that of the lateral sliding surfaces 69 </ b> D, 69 </ b> D of the gripping member 63. When the first workpiece gripping portion 62A is closed, the opening / closing tool 43 is disposed at the upper end position when returning from the idle stage S2 to the workpiece receiving stage S1, and the lateral sliding surface 69D of the gripping member 63 is By the sliding contact with the lateral sliding surface 45 of the opening / closing tool 43, the sliding contact projections 44, 44 are interrupted between the gripping members 63, 63, and the first workpiece gripping portion 62A is opened.
なお、対向摺接突部16Tの上部にも、開閉ツール43の1対の上摺動面46,46と同様に、図示しない1対の上摺動面が形成されている。そして、第1のワーク把持部62Aが閉じた状態でワーク受取ステージS1からアイドルステージS2に移動すると、対向摺接突部16Tが第1のワーク把持部62Aの把持部材63,63の間に下方から突入し、対向摺接突部16Tの1対の上摺動面と把持部材63,63の下摺動面69C,69Cとの摺接によって対向摺接突部16Tが把持部材63,63の間に割り込み、第1のワーク把持部62Aが開かれる。   In addition, a pair of upper sliding surfaces (not shown) is formed on the upper portion of the opposing sliding contact projection 16T as well as the pair of upper sliding surfaces 46, 46 of the opening / closing tool 43. When the first workpiece gripping portion 62A is closed and moved from the workpiece receiving stage S1 to the idle stage S2, the opposed sliding contact portion 16T is lowered between the gripping members 63 and 63 of the first workpiece gripping portion 62A. The opposing sliding contact projection 16T is brought into contact with the gripping members 63, 63 by sliding contact between the pair of upper sliding surfaces of the opposing sliding contact projection 16T and the lower sliding surfaces 69C, 69C of the gripping members 63, 63. In the meantime, the first workpiece gripping part 62A is opened.
本実施形態のトランスファプレス機10の構成に関する説明は以上である。次に、このトランスファプレス機10の作用効果について説明する。トランスファプレス機10が起動されると、図14に示すように、打抜パンチ39及びブランク成形パンチ40が打抜ダイ37の上方に待機した状態で、フープ材Vが打抜ダイ37上に送給される。そして、図6に示すように打抜パンチ39が打抜ダイ37の打抜孔37Aに突入してフープ材Vからブランク材Bを打抜、ブランク成形ダイ38の上面に押し付ける。   This completes the description of the configuration of the transfer press 10 of the present embodiment. Next, the function and effect of the transfer press 10 will be described. When the transfer press 10 is activated, the hoop material V is fed onto the punching die 37 with the punching punch 39 and the blank forming punch 40 waiting above the punching die 37 as shown in FIG. Be paid. Then, as shown in FIG. 6, the punching punch 39 enters the punching hole 37 </ b> A of the punching die 37, punches the blank material B from the hoop material V, and presses it against the upper surface of the blank forming die 38.
このとき、下加圧部材41は、エアシリンダ42により可動範囲の上端位置に押し上げられていて、絞り成形孔38A内でブランク材Bの下面に宛がわれる。そして、下加圧部材41がエアシリンダ42から押し上げ力を受けた状態で、ブランク成形パンチ40が降下してブランク材Bをブランク成形ダイ38の絞り成形孔38Aに押し込んでいき、下加圧部材41がブランク成形パンチ40に従動して押し下げられていく。これにより、ブランク材Bは下加圧部材41に下方から支持された状態で絞られ、従来問題になっていたブランク材Bの下方への逃げが抑えられる。   At this time, the lower pressure member 41 is pushed up to the upper end position of the movable range by the air cylinder 42 and is directed to the lower surface of the blank material B in the drawing hole 38A. Then, with the lower pressurizing member 41 receiving the pushing force from the air cylinder 42, the blank forming punch 40 descends and pushes the blank material B into the drawing hole 38A of the blank forming die 38, and the lower pressurizing member 41 is pushed down following the blank forming punch 40. Thereby, the blank material B is squeezed while being supported by the lower pressure member 41 from below, and the downward escape of the blank material B, which has been a problem in the past, is suppressed.
また、ブランク材Bの外縁部が打抜パンチ39とブランク成形ダイ38の上面との間に挟まれた状態で絞られるので、ブランク材Bの皺の発生も抑えられる。そして、ブランク材Bから筒形ワークWが成形されて、ブランク成形パンチ40及び下加圧部材41と共に絞り成形孔38Aの下方のワーク受取ステージS1に向かう。なお、ブランク材Bが筒形ワークWに成形された後は、エアシリンダ42へのエアーの供給が切り替えられ、下加圧部材41がエアシリンダ42により下方に引っ張られて降下する。   Further, since the outer edge portion of the blank material B is squeezed while being sandwiched between the punching punch 39 and the upper surface of the blank forming die 38, the occurrence of wrinkles in the blank material B is also suppressed. And the cylindrical workpiece W is shape | molded from the blank material B, and goes to the workpiece | work receiving stage S1 below 38 A of drawing hole 38A with the blank shaping | molding punch 40 and the lower pressurization member 41. FIG. After the blank material B is formed into the cylindrical workpiece W, the supply of air to the air cylinder 42 is switched, and the lower pressure member 41 is pulled downward by the air cylinder 42 and descends.
また、絞りプレス機20のパンチ22群は、ブランク成形パンチ40がブランク材Bを絞り成形孔38Aに押し込む動作中に、筒形ワークWをダイ24のダイ孔に押し込む。そして、ブランク成形パンチ40が筒形ワークWと共に降下してワーク受取ステージS1に向かう動作中に、パンチ22群は、筒形ワークWとノックアウトピンと共に上昇して加工ステージS3に向かう。また、このとき、トランスファ装置60のトランスファスライド61は、可動ストロークの終端側から始端側に向かって移動する。   Further, the punch 22 group of the drawing press machine 20 pushes the cylindrical workpiece W into the die hole of the die 24 while the blank forming punch 40 pushes the blank material B into the drawing hole 38A. While the blank forming punch 40 moves down together with the cylindrical workpiece W and moves toward the workpiece receiving stage S1, the punch 22 group moves up together with the cylindrical workpiece W and the knockout pin and moves toward the machining stage S3. At this time, the transfer slide 61 of the transfer device 60 moves from the end of the movable stroke toward the start end.
そのトランスファスライド61が始端側に移動する際に、第2及び第3のワーク把持部62B,62Cは、それら自体に備えた駆動源によって開いた状態に保持されて現在位置より始端側のアイドルステージS2又は加工ステージS3に向かう。一方、第1のワーク把持部62Aは、圧縮コイルばね68,68の弾発力によって閉じた状態に保持されてワーク受取ステージS1に向かう。   When the transfer slide 61 moves to the start end side, the second and third workpiece gripping portions 62B and 62C are held in an open state by a drive source provided to themselves, and the idle stage on the start end side from the current position. Go to S2 or processing stage S3. On the other hand, the first workpiece gripping portion 62A is held in a closed state by the resilient force of the compression coil springs 68 and 68 and moves toward the workpiece receiving stage S1.
このとき、ワーク受取ステージS1では、開閉ツール43が上端位置に配置されて摺接突部44,44がワーク搬送面13より上方に突出した状態で待機している。そして、第1のワーク把持部62Aがワーク受取ステージS1に到達する過程で、図9に示した第1のワーク把持部62Aの横摺動面69D,69Dが開閉ツール43の横摺動面45,45に摺接して1対の摺接突部44,44が1対の把持部材63,63の間に割り込み、図7に示すように1対の把持部材63,63の間が開かれる。   At this time, in the workpiece receiving stage S1, the open / close tool 43 is placed at the upper end position, and the slide contact projections 44 and 44 stand by in a state of protruding upward from the workpiece conveying surface 13. Then, in the process in which the first workpiece gripping portion 62A reaches the workpiece receiving stage S1, the lateral sliding surfaces 69D and 69D of the first workpiece gripping portion 62A shown in FIG. , 45 slidably contact the pair of sliding contact projections 44, 44 between the pair of gripping members 63, 63, and the pair of gripping members 63, 63 are opened as shown in FIG.
そして、図11に示すように、筒形ワークWの一部が1対の把持部材63,63の間に収まり、下加圧部材41の上端部が摺接突部44,44の間に収まる。そこからブランク成形パンチ40及び下加圧部材41が更に降下すると共に、摺接突部44,44の上摺動面46,46に把持部材63,63の下摺動面69C,69Cが摺接しながら開閉ツール43が押し下げられることで、把持部材63,63が徐々に閉じられていく。そして、図12に示すように開閉ツール43が可動範囲の下端寄り位置に至ったところで、筒形ワークWが1対の把持部材63,63の間に把持され、両把持部材63,63の冠払係止部69B,69Bに筒形ワークWの上端部が係止する。   As shown in FIG. 11, a part of the cylindrical workpiece W is accommodated between the pair of gripping members 63, 63, and the upper end portion of the lower pressure member 41 is accommodated between the sliding contact protrusions 44, 44. . Then, the blank forming punch 40 and the lower pressure member 41 are further lowered, and the lower sliding surfaces 69C and 69C of the gripping members 63 and 63 are in sliding contact with the upper sliding surfaces 46 and 46 of the sliding contact protrusions 44 and 44, respectively. While the opening / closing tool 43 is pushed down, the gripping members 63 and 63 are gradually closed. Then, as shown in FIG. 12, when the opening / closing tool 43 reaches the position near the lower end of the movable range, the cylindrical workpiece W is gripped between the pair of gripping members 63, 63, and the crowns of both gripping members 63, 63 are The upper end portion of the cylindrical workpiece W is locked to the pay-off locking portions 69B and 69B.
また、この位置は、ブランク成形パンチ40の下死点となっていて、冠払係止部69B,69Bに筒形ワークWの上端部が係止してからブランク成形パンチ40の動作が反転して上昇し始める。一方、下加圧部材41は更に降下して図13に示すように開閉ツール43を下端位置まで移動する。そして、下加圧部材41が開閉ツール43を下端位置に保持した状態で、ブランク成形パンチ40から筒形ワークWが離脱し、第1のワーク把持部62Aがブランク成形パンチ40から筒形ワークWを受け取った状態になる。このとき、第2及び第3のワーク把持部62B,62Cも筒形ワークWをパンチ22等から筒形ワークWを受け取った状態になる(図8及び図2参照)。   Further, this position is the bottom dead center of the blank forming punch 40, and the operation of the blank forming punch 40 is reversed after the upper end portion of the cylindrical workpiece W is locked to the crown-pasting locking portions 69B and 69B. And start to rise. On the other hand, the lower pressure member 41 further descends and moves the opening / closing tool 43 to the lower end position as shown in FIG. Then, with the lower pressure member 41 holding the open / close tool 43 at the lower end position, the cylindrical workpiece W is detached from the blank forming punch 40, and the first workpiece gripping portion 62 </ b> A is removed from the blank forming punch 40. Will be in a state of receiving. At this time, the second and third workpiece gripping portions 62B and 62C also receive the cylindrical workpiece W from the punch 22 or the like (see FIGS. 8 and 2).
そして、トランスファスライド61が可動ストロークの終端側に移動し、第1〜第3のワーク把持部62A,62B,62Cが筒形ワークWを隣のステージのダミーピン14、ダミーパンチ26又はパンチ22に受け渡す。その際、先頭のアイドルステージS2では、第1のワーク把持部62Aの把持部材63,63の間に対向摺接突部16T(図4参照)が下方から割り込んで進入してそれら把持部材63,63の間を開き、筒形ワークWを解放させる。また、終端の第3のワーク把持部62Cが解放した筒形ワークWは、トランスファプレス機10の終端部に備えたベルトコンベア10B(図3参照)の上に落下して搬送される。そして、次のブランクBが打ち抜かれて上記した動作が繰り返され、複数の筒形ワークWが順次成形されていく。   Then, the transfer slide 61 moves to the end side of the movable stroke, and the first to third workpiece gripping portions 62A, 62B, 62C receive the cylindrical workpiece W on the dummy pin 14, dummy punch 26 or punch 22 of the adjacent stage. hand over. At that time, in the leading idle stage S2, the opposing sliding contact protrusion 16T (see FIG. 4) enters between the gripping members 63, 63 of the first work gripping portion 62A from below and enters the gripping members 63, 63. 63 is opened, and the cylindrical workpiece W is released. Further, the cylindrical work W released by the third work gripping part 62C at the end is dropped and conveyed onto the belt conveyor 10B (see FIG. 3) provided at the end part of the transfer press machine 10. Then, the next blank B is punched, the above-described operation is repeated, and a plurality of cylindrical workpieces W are sequentially formed.
上記したように本実施形態のトランスファプレス機10では、ブランク成形パンチ40にてブランク材Bを筒形ワークWに成形する際に、下加圧部材41が絞り成形孔38A内でブランク材Bを下方から支持しかつ、ブランク成形パンチ40に従動して降下するので、従来問題になっていたブランク材Bの下方への逃げが抑えられ、高い形状品質の筒形ワークWを成形することが可能になる。   As described above, in the transfer press 10 of the present embodiment, when the blank material B is formed into the cylindrical workpiece W by the blank forming punch 40, the lower pressure member 41 causes the blank material B to be formed in the drawing hole 38A. Since it is supported from below and descends following the blank forming punch 40, the downward escape of the blank B, which has been a problem in the past, can be suppressed, and a cylindrical work W with high shape quality can be formed. become.
ところで、筒形ワークWをブランク成形パンチ40からトランスファ装置60の始端側の1対の把持部材63,63に受け渡す際に、それら把持部材63,63を圧縮コイルばね68,68の弾発力に抗して開く必要がある。そのための構成として、筒形ワークWで1対の把持部材63,63を押し拡げる構成が考えられるが、そうすると筒形ワークWに把持部材63,63との摺接による深い傷が付くという問題が生じる。一方、下加圧部材41の上端部を筒形ワークWより側方に張り出す大きさにして、下加圧部材41の上端部で1対の把持部材63,63を押し拡げるようにすると、下加圧部材41の上端部を絞り成形孔38Aに挿入することができなくなり、上記した絞り成形時のブランク材Bの逃げが抑えられなくなる。   By the way, when the cylindrical workpiece W is transferred from the blank forming punch 40 to the pair of gripping members 63, 63 on the start end side of the transfer device 60, the gripping members 63, 63 are elastically applied by the compression coil springs 68, 68. Need to open against. As a configuration for that purpose, a configuration in which the pair of gripping members 63 and 63 are pushed and expanded by the cylindrical workpiece W is conceivable. However, this causes a problem that the cylindrical workpiece W is deeply damaged by sliding contact with the gripping members 63 and 63. Arise. On the other hand, when the upper end portion of the lower pressurizing member 41 is sized to project laterally from the cylindrical workpiece W and the pair of gripping members 63 and 63 are pushed and expanded at the upper end portion of the lower pressurizing member 41, The upper end portion of the lower pressure member 41 cannot be inserted into the drawing hole 38A, and the escape of the blank material B at the time of the above-described drawing cannot be suppressed.
これらに対し、本実施形態のトランスファプレス機10では、ワーク受取ステージS1に開閉ツール43を往復動可能に設け、その開閉ツール43が1対の把持部材63,63に摺接してそれら把持部材63,63の間を開閉するので、筒形ワークWに深い傷を付けずに、ブランク成形パンチ40から1対の把持部材63,63への筒形ワークWの受け渡しが可能になる。この点においても、本実施形態のトランスファプレス機10によれば、高い形状品質の筒形ワークWを成形することが可能になる。   On the other hand, in the transfer press machine 10 of the present embodiment, the opening / closing tool 43 is provided on the workpiece receiving stage S1 so as to be able to reciprocate, and the opening / closing tool 43 is in sliding contact with the pair of gripping members 63, 63 so 63, the cylindrical workpiece W can be transferred from the blank molding punch 40 to the pair of gripping members 63, 63 without deeply scratching the cylindrical workpiece W. Also in this point, according to the transfer press machine 10 of this embodiment, it becomes possible to shape | mold the cylindrical workpiece W of high shape quality.
また、本実施形態のトランスファプレス機10のようにトランスファ装置60の上方でブランク材Bから筒形ワークWを成形するものでは、一般に、ワーク受取ステージS1の周囲が、ブランク成形ダイ38やそれを下方から支持する支持台36D,36Dやトランスファ装置60の構成部品等によって狭くなるが、本実施形態では、開閉ツール43がトランスファ装置60の1対の把持部材63,63に対して下方から進退する配置になっているので、ブランク成形ダイ38や支持台36D等をワーク受取ステージS1から遠ざけて強度を低下させるようなことをすることなく、開閉ツール43を設置することができる。しかも、開閉ツール43は、ワーク受取ステージS1に向かって移動してくる第1のワーク把持部62Aの1対の把持部材63,63に対して上端位置で待機して摺接することで第1のワーク把持部62Aの1対の把持部材63,63を開くので、1対の把持部材63,63の無駄な待ち時間が少なくなり、トランスファプレス機10の高速運転が可能になる。さらには、開閉ツール43は下加圧部材41により押し下げられて上端位置から下端位置に移動するので、下加圧部材41と開閉ツール43との間で駆動源が共有され、簡素な構成になる。また、下加圧部材41を駆動する駆動源としてエアシリンダ42を備えているので、下加圧部材41がブランク成形パンチ40に従動して降下する動作を気圧調整によって容易に行うことができる。   Further, in the case where the cylindrical workpiece W is formed from the blank material B above the transfer device 60 as in the transfer press machine 10 of the present embodiment, generally, the periphery of the workpiece receiving stage S1 is the blank forming die 38 or the die. In this embodiment, the opening / closing tool 43 advances and retreats with respect to the pair of gripping members 63 and 63 of the transfer device 60, although it is narrowed by the support bases 36 </ b> D and 36 </ b> D supported from below and the components of the transfer device 60. Therefore, the open / close tool 43 can be installed without reducing the strength by moving the blank forming die 38, the support base 36D, etc. away from the workpiece receiving stage S1. Moreover, the opening / closing tool 43 waits at the upper end position in sliding contact with the pair of gripping members 63, 63 of the first work gripping portion 62A moving toward the work receiving stage S1. Since the pair of gripping members 63, 63 of the workpiece gripping part 62A are opened, the useless waiting time of the pair of gripping members 63, 63 is reduced, and the transfer press 10 can be operated at high speed. Furthermore, since the opening / closing tool 43 is pushed down by the lower pressure member 41 and moves from the upper end position to the lower end position, the drive source is shared between the lower pressure member 41 and the opening / closing tool 43, resulting in a simple configuration. . Further, since the air cylinder 42 is provided as a drive source for driving the lower pressurizing member 41, the lower pressurizing member 41 can be easily moved by the blank forming punch 40 to be lowered by adjusting the atmospheric pressure.
[他の実施形態]
本発明は、前記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.
(1)前記実施形態では、ブランク材Bをフープ材Vから打ち抜いて絞り成形していたが、予め用意されたブランク材を絞り成形する構成としてもよい。 (1) In the above-described embodiment, the blank material B is punched from the hoop material V and drawn. However, a blank material prepared in advance may be drawn.
(2)前記実施形態では、開閉ツール43が下加圧部材41と同じ駆動源から動力を受けて駆動される構成であったが、開閉ツール43が下加圧部材41とは別の駆動源から動力を受けて駆動される構成としてもよい。即ち、開閉ツール43が下加圧部材41の駆動源であるエアシリンダ42とは別のエアシリンダによって駆動される構成や、開閉ツール43がラム31の駆動源である第2サーボモータによって駆動するようにしてもよい。 (2) In the above embodiment, the opening / closing tool 43 is driven by receiving power from the same drive source as the lower pressure member 41, but the opening / closing tool 43 is a drive source different from the lower pressure member 41. It is good also as a structure driven by receiving motive power from. That is, the open / close tool 43 is driven by an air cylinder different from the air cylinder 42 that is the drive source of the lower pressure member 41, or the open / close tool 43 is driven by the second servo motor that is the drive source of the ram 31. You may do it.
(3)前記実施形態では、開閉ツール43が第1のワーク把持部62Aの把持部材63,63に対して下方から進退する構成になっていたが、例えば、開閉ツール43をワーク搬送面13のうちワーク受取ステージS1より始端側に配置し、把持部材63,63の間に横方向から進退してそれら把持部材63,63を開閉させる構成にしてもよい。 (3) In the above embodiment, the opening / closing tool 43 is configured to advance and retract from below with respect to the gripping members 63, 63 of the first workpiece gripping part 62A. Of these, it may be arranged on the start end side from the workpiece receiving stage S <b> 1, and may be configured to open and close the gripping members 63, 63 by moving back and forth in the lateral direction between the gripping members 63, 63.
(4)前記実施形態では、開閉ツール43の横摺動面45,45と把持部材63,63の下摺動面69C,69Cとの摺接により把持部材63,63が徐々に閉じる構成であったが、横摺動面45、下摺動面69Cを設けずに、把持部材63,63が急峻に閉じる構成としてもよい。 (4) In the above embodiment, the gripping members 63 and 63 are gradually closed by sliding contact between the lateral sliding surfaces 45 and 45 of the opening / closing tool 43 and the lower sliding surfaces 69C and 69C of the gripping members 63 and 63. However, the gripping members 63 and 63 may be configured to close sharply without providing the lateral sliding surface 45 and the lower sliding surface 69C.
10 トランスファプレス機
34 支持ベース
38 ブランク成形ダイ
38A 絞り成形孔
40 ブランク成形パンチ
41 下加圧部材
41H ヘッド部
42 エアシリンダ
43 開閉ツール
43A ブロック部(ツールベース部)
43D 貫通孔
44 摺接突部
60 トランスファ装置
63 把持部材
B ブランク材
S1 ワーク受取ステージ
S3 加工ステージ
W 筒形ワーク
DESCRIPTION OF SYMBOLS 10 Transfer press machine 34 Support base 38 Blank forming die 38A Drawing hole 40 Blank forming punch 41 Lower pressure member 41H Head part 42 Air cylinder 43 Opening / closing tool 43A Block part (tool base part)
43D Through hole 44 Sliding contact projection 60 Transfer device 63 Holding member B Blank material S1 Work receiving stage S3 Processing stage W Cylindrical work

Claims (7)

  1. 一端有底の筒形ワークを、一列に並んだ加工ステージ群の始端側から終端側へとトランスファ装置にて間欠的に搬送して順次成形すると共に、前記加工ステージ群より上流側のワーク受取ステージの上方に、絞り成形孔を有するブランク成形ダイを設け、ブランク成形パンチにてブランク材を前記絞り成形孔に押し込んで前記筒形ワークに成形し、前記トランスファ装置の始端側の1対の把持部材に受け渡すトランスファプレス機であって、前記始端側の1対の把持部材が、互いに接離可能に支持されかつ互いに接近する側に付勢されたトランスファプレス機において、
    前記ワーク受取ステージに上下動可能に設けられ、前記ブランク材を下方から支持しかつ前記ブランク成形パンチに従動して降下する下加圧部材と、
    前記ワーク受取ステージに往復動可能に設けられ、前記筒形ワークを受け入れる前の前記1対の把持部材に摺接してそれら把持部材を開き、前記筒形ワークを受け入れた前記1対の把持部材から離間してそれら把持部材を閉じ、前記筒形ワークを前記1対の把持部材に把持させる開閉ツールと、を備えたトランスファプレス機。
    Cylindrical workpieces with one end are intermittently conveyed by a transfer device from the start end side to the end side of a group of processing stages arranged in a row and sequentially formed, and the workpiece receiving stage upstream of the processing stage group A blank forming die having a drawing hole is provided above, a blank material is pushed into the drawing hole by a blank forming punch and formed into the cylindrical workpiece, and a pair of gripping members on the start end side of the transfer device A pair of gripping members on the starting end side are supported so as to be able to come in contact with each other and are urged to approach each other.
    A lower pressurizing member that is provided on the workpiece receiving stage so as to be movable up and down, supports the blank material from below, and descends following the blank forming punch;
    From the pair of gripping members that are provided on the workpiece receiving stage so as to be able to reciprocate, slide in contact with the pair of gripping members before receiving the cylindrical workpiece, and open the gripping members. A transfer press machine comprising: an opening / closing tool that is spaced apart to close the gripping members and grips the cylindrical workpiece by the pair of gripping members.
  2. 前記開閉ツールは、前記1対の把持部材の間に割り込んだ上端位置と、前記1対の把持部材の下方にずれた下端位置との間を上下動する請求項1に記載のトランスファプレス機。   The transfer press according to claim 1, wherein the opening / closing tool moves up and down between an upper end position interrupted between the pair of gripping members and a lower end position shifted downward of the pair of gripping members.
  3. 前記1対の把持部材の移動領域の下方には、前記絞り成形孔の延長線上に延びた直動支持孔を有する支持ベースが設けられ、
    前記開閉ツールは、前記直動支持孔に直動可能に支持されたツールベース部の上面から1対の摺接突部が突出した構造をなして、それら1対の摺接突部が前記1対の把持部材に摺接して前記1対の把持部材を開くように構成されると共に、
    前記ツールベース部のうち前記1対の摺接突部の間を上下に貫通する貫通孔に前記下加圧部材が直動可能に支持されている請求項2に記載のトランスファプレス機。
    A support base having a linear motion support hole extending on an extension line of the drawing hole is provided below the moving region of the pair of gripping members,
    The opening / closing tool has a structure in which a pair of sliding contact protrusions protrudes from an upper surface of a tool base portion supported so as to be linearly movable in the linear motion support hole. And is configured to open the pair of gripping members in sliding contact with the pair of gripping members;
    The transfer press according to claim 2, wherein the lower pressurizing member is supported so as to be linearly movable in a through-hole penetrating vertically between the pair of sliding contact protrusions in the tool base portion.
  4. 前記下加圧部材の上端部には、側方に張り出したヘッド部が設けられ、前記ヘッド部が前記1対の摺接突部の間に収まるように構成された請求項3に記載のトランスファプレス機。   4. The transfer according to claim 3, wherein a head portion projecting laterally is provided at an upper end portion of the lower pressure member, and the head portion is configured to fit between the pair of sliding contact projections. Press machine.
  5. 前記開閉ツールは、前記ワーク受取ステージに向かって移動してくる前記1対の把持部材に対して可動範囲の上端位置で待機して摺接することで前記1対の把持部材を開くと共に、前記上端位置から降下して前記1対の把持部材を閉じる請求項2乃至4の何れか1の請求項に記載のトランスファプレス機。   The open / close tool opens the pair of gripping members by waiting in sliding contact with the pair of gripping members moving toward the workpiece receiving stage at an upper end position of a movable range, and the upper end tool The transfer press according to any one of claims 2 to 4, wherein the transfer press is lowered from a position to close the pair of gripping members.
  6. 前記開閉ツールは、可動範囲の上端位置に向けて付勢されると共に、前記下加圧部材により押し下げられて降下する請求項2乃至5の何れか1の請求項に記載のトランスファプレス機。   The transfer press according to any one of claims 2 to 5, wherein the opening / closing tool is urged toward an upper end position of a movable range and is lowered by the lower pressure member.
  7. 前記下加圧部材を駆動する駆動源としてエアシリンダを備えた請求項1乃至6の何れか1の請求項に記載のトランスファプレス機。   The transfer press machine according to claim 1, further comprising an air cylinder as a drive source for driving the lower pressure member.
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