JP5151705B2

JP5151705B2 - Bending machine front and back asymmetric mold

Info

Publication number: JP5151705B2
Application number: JP2008148945A
Authority: JP
Inventors: 賢治岡本
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2008-06-06
Filing date: 2008-06-06
Publication date: 2013-02-27
Anticipated expiration: 2028-06-06
Also published as: JP2009291821A

Description

本発明は、金型、特に、第１軸方向に延びかつ昇降する曲げ機械の金型支持部に装着可能な表裏非対称金型に関する。 The present invention relates to a mold, and more particularly, to a front and back asymmetric mold that can be mounted on a mold support of a bending machine that extends in a first axial direction and moves up and down.

プレスブレーキなどの曲げ機械には、昇降する金型支持部が設けられている。この金型支持部は一方向に延びて形成されており、これに複数の金型が一方向に沿って取り付けられている。金型支持部に取り付けられる金型として、曲げ加工時のワークとの干渉を避けるために、Ｖ字型に折り曲げられ刃先が斜めに延びるグースネック金型のような表裏非対称の金型が従来知られている（たとえば、特許文献１参照）。グースネック金型は、刃先が斜めに配置されるので、表面は凹み裏面は突出しており、表裏面が非対称に形成されている。このような表裏非対称金型を用いる場合、曲げ形状によってはワークとの干渉を回避するために金型の表裏を反転させる金型交換作業を行なわなければならない。
特許４０４８８９３号公報 A bending machine such as a press brake is provided with a die support that moves up and down. The mold support part is formed to extend in one direction, and a plurality of molds are attached to the mold support part in one direction. Conventionally known as a mold attached to the mold support part is an asymmetric mold such as a gooseneck mold that is bent into a V shape and the blade tip extends obliquely in order to avoid interference with the workpiece during bending. (For example, refer to Patent Document 1). In the gooseneck mold, the cutting edge is disposed obliquely, so that the front surface is recessed and the back surface protrudes, and the front and back surfaces are formed asymmetrically. When such a front / back asymmetric mold is used, depending on the bending shape, it is necessary to perform a mold exchanging operation for inverting the front and back of the mold in order to avoid interference with the workpiece.
Japanese Patent No. 4048893

金型は、一般に油圧を用いた着脱装置やボルトにより金型支持部に固定されている。しかし、金型を金型支持部から外して表裏反転する表裏反転作業を行うと、金型の芯の確認や原点位置の確認等の作業が必要になる。このため、作業頻度が多いほど、曲げ機械の稼働時間が短くなるという問題が生じる。 The mold is generally fixed to the mold support portion by a detachable device or a bolt using hydraulic pressure. However, when the front / back reversing operation is performed in which the mold is removed from the mold support portion and the front / back is reversed, work such as confirmation of the core of the mold and confirmation of the origin position is required. For this reason, the problem that the working time of a bending machine becomes short, so that there are many work frequencies.

本発明の課題は、表裏非対称金型の表裏の反転作業を短時間で行えるようにすることにある。 An object of the present invention is to enable the reversing operation of the front and back of a front and back asymmetric mold to be performed in a short time.

本発明に係る曲げ機械の表裏非対称金型は、第１軸方向に延びかつ昇降する金型支持部に装着可能な金型であって、装着部と、連結部と、金型部と、を備えている。装着部は、金型支持部に装着可能なものである。連結部は、第１軸回りに加工姿勢と非加工姿勢との間で揺動自在に装着部に連結されるものである。金型部は、第１軸と交差する第２軸回りに回動自在に連結部に装着され、刃先が斜めに延びる表裏非対称形状のものである。 A front and back asymmetric mold of a bending machine according to the present invention is a mold that can be mounted on a mold support portion that extends in the first axial direction and moves up and down, and includes a mounting portion, a coupling portion, and a mold portion. I have. The mounting portion can be mounted on the mold support portion. The connecting portion is connected to the mounting portion so as to be swingable between a processing posture and a non-processing posture around the first axis. The mold part is attached to the connecting part so as to be rotatable about a second axis intersecting the first axis, and has a front and back asymmetric shape in which the cutting edge extends obliquely.

この表裏非対称金型では、金型の表裏の反転作業を行う場合、装着部を金型支持部に装着した状態で、金型部を連結部とともに、装着部に対して加工姿勢から、隣接する金型との干渉が生じなくなる非加工姿勢に第１軸回りに揺動させる。この状態では、隣接する金型との干渉が生じなくなるので、第２軸回りに金型部を１８０度回動させて表裏を反転させることができる。最後に金型部を連結部とともに非加工姿勢から加工姿勢に戻すと、金型の表裏が反転する。 In this front / back asymmetric mold, when performing the reversing work of the front and back of the mold, with the mounting part mounted on the mold support part, the mold part together with the connecting part is adjacent to the mounting part from the processing posture. Oscillate around the first axis in a non-working posture where interference with the mold does not occur. In this state, the interference with the adjacent mold does not occur, so that the mold part can be rotated 180 degrees around the second axis to reverse the front and back. Finally, when the mold part is returned from the non-working position to the working position together with the connecting part, the front and back of the mold are reversed.

ここでは、金型部を単純に１８０度回動させるだけではなく、金型部をいったん非加工姿勢に揺動させてから第２軸回りに１８０度回動させることにより、隣接する金型との干渉を避けて金型を１８０度回転させることができる。このため、グースネック金型のような表裏非対称金型を金型支持部から外すことなく表裏の反転作業を行えるようになる。したがって、金型を着脱することによる芯の確認や原点位置の確認等の作業が不要になり、金型の反転作業を短時間で行えるようになる。 Here, not only simply rotating the mold part by 180 degrees, but also by rotating the mold part once in a non-working posture and then rotating the mold part by 180 degrees around the second axis, The mold can be rotated 180 degrees while avoiding the interference. For this reason, the front and back inversion work can be performed without removing the front and back asymmetric molds such as the gooseneck mold from the mold support part. Therefore, operations such as confirmation of the core and confirmation of the origin position by attaching and detaching the die are not required, and the inversion operation of the die can be performed in a short time.

金型部を第２軸方向に沿って連結部と接離するように移動可能な移動機構と、金型部を連結部に接近する方向に付勢する付勢部材と、をさらに備えてもよい。この場合には、金型部が第２軸方向に移動できるので、加工姿勢のときに装着部と金型部との間に凹凸嵌合する係合部を設け、装着部と金型部とを加工姿勢の時に芯出しした状態で連結しても、係合部を係合状態と離脱状態とに簡単に切り換えできる。また、付勢部材により金型部が連結部に接近する方向に付勢されているので、加工姿勢で装着部と金型部とが自動的に係合状態になる。 A moving mechanism capable of moving the mold part so as to move toward and away from the connecting part along the second axis direction; and a biasing member for biasing the mold part in a direction approaching the connecting part. Good. In this case, since the mold part can move in the second axial direction, an engaging part that fits unevenly is provided between the mounting part and the mold part in the processing posture, and the mounting part and the mold part Even if they are connected in a centered state during the machining posture, the engaging portion can be easily switched between the engaged state and the disengaged state. Further, since the die portion is urged by the urging member in a direction approaching the connecting portion, the mounting portion and the die portion are automatically engaged in the processing posture.

装着部と金型部との間に設けられ、加工姿勢の時に凹凸嵌合する係合部をさらに備えてもよい。この場合には、加工姿勢の時に金型部と装着部とが凹凸嵌合により係合するので、加工時に金型部と装着部とを芯出しした状態で連結できる。 You may further provide the engaging part which is provided between a mounting part and a metal mold | die part, and carries out uneven | corrugated fitting at the time of a processing attitude | position. In this case, since the mold part and the mounting part are engaged by the concave-convex fitting in the processing posture, the mold part and the mounting part can be connected in a centered state during processing.

連結部を加工姿勢で位置決めする位置決め機構をさらに備えてもよい。この場合、加工姿勢にあるとき装着部に連結部が位置決めされるので、加工時に連結部ががたつきにくくなる。 You may further provide the positioning mechanism which positions a connection part in a process attitude | position. In this case, since the connecting portion is positioned on the mounting portion when in the processing posture, the connecting portion is less likely to rattle during processing.

本発明によれば、金型部を単純に１８０度回動させるだけではなく、金型部をいったん非加工姿勢に揺動させてから１８０度回動させることにより、隣接する金型との干渉を避けて金型を１８０度回転させることができる。このため、グースネック金型のような表裏非対称金型を金型支持部から外すことなく表裏の反転作業を行えるようになる。したがって、金型を着脱することによる芯の確認や原点位置の確認等の作業が不要になり、金型の反転作業を短時間で行えるようになる。 According to the present invention, not only simply rotating the mold part by 180 degrees, but also rotating the mold part once in a non-working posture and then rotating the mold part by 180 degrees, thereby interfering with adjacent molds. The mold can be rotated 180 degrees while avoiding the above. For this reason, the front and back inversion work can be performed without removing the front and back asymmetric molds such as the gooseneck mold from the mold support part. Therefore, operations such as confirmation of the core and confirmation of the origin position by attaching and detaching the die are not required, and the inversion operation of the die can be performed in a short time.

図１及び図２において、本発明の一実施形態が装着された曲げ機械としてのプレスブレーキ１０は、側面形状が前方に開口したＣ字状のフレーム１１を有している。フレーム１１の上フレーム部１１ａ及び下フレーム部１１ｂには、上金型支持部材（金型支持部の一例）１２及び下金型支持部材１３が上下に対向して設置されている。下金型支持部材１３の上端には、成形用の凹部を有し左右方向（第１軸方向の一例）に延びる複数種類の下金型１６が並べて配置されている。上金型支持部材１２は、左右方向に延びる板状の部材であって、上フレーム部１１ａの左右に配置されたガイド機構１４，１４によって昇降方向に移動自在に支持されている。上金型支持部材１２は、昇降駆動部１５により昇降駆動される。上金型支持部材１２は、油圧駆動される金型着脱装置１２ａを有しており、上金型支持部材１２に本発明の一実施形態によるグースネック金型（表裏非対称金型の一例）１８を含む複数の上金型１７が着脱自在に装着される。この上金型１７の下端の刃先部１７ａが下降時に下金型１６の凹部に進入することにより、ワークがＶ字状に折り曲げ加工される。 1 and 2, a press brake 10 as a bending machine to which an embodiment of the present invention is mounted has a C-shaped frame 11 having a side surface opened forward. On the upper frame part 11a and the lower frame part 11b of the frame 11, an upper mold support member (an example of a mold support part) 12 and a lower mold support member 13 are installed facing each other in the vertical direction. At the upper end of the lower mold support member 13, a plurality of types of lower molds 16 having a molding recess and extending in the left-right direction (an example of the first axial direction) are arranged side by side. The upper mold support member 12 is a plate-like member extending in the left-right direction, and is supported so as to be movable in the up-down direction by guide mechanisms 14, 14 disposed on the left and right of the upper frame portion 11a. The upper mold support member 12 is driven up and down by the up-and-down driving unit 15. The upper mold support member 12 includes a hydraulically driven mold attaching / detaching device 12a, and the upper mold support member 12 is provided with a gooseneck mold (an example of a front / back asymmetric mold) 18 according to an embodiment of the present invention. A plurality of upper molds 17 including it are detachably mounted. When the cutting edge portion 17a at the lower end of the upper die 17 enters the concave portion of the lower die 16 when lowered, the workpiece is bent into a V shape.

＜グースネック金型の構成＞
グースネック金型１８は、図３及び図４に示すように、上金型支持部材１２に着脱自在に装着可能な装着部２０と、左右方向に沿った第１軸Ｘ回りに揺動自在に装着部２０に連結される連結部２２と、第１軸Ｘと直交する第２軸Ｙ回りに回動自在に連結部２２に連結され、刃先２４ａが斜めに延びるグースネック型の金型部２４と、を備えている。また、グースネック金型１８は、金型部２４を第２軸Ｙ方向に沿って連結部２２と接離するように移動可能に連結部２２と連結する移動機構２６と、金型部２４を連結部２２に接近する方向に付勢する付勢部材２８と、加工姿勢のときに装着部２０と金型部２４とを凹凸嵌合させる係合部３０と、連結部２２を加工姿勢で位置決めする位置決め機構３２と、を備えている。 <Configuration of gooseneck mold>
As shown in FIGS. 3 and 4, the gooseneck mold 18 is mounted on the upper mold support member 12 so as to be detachable and swingably mounted on the first axis X along the left-right direction. A connecting part 22 connected to the part 20, a gooseneck mold part 24 connected to the connecting part 22 so as to be rotatable around a second axis Y orthogonal to the first axis X, and a blade edge 24a extending obliquely; It has. In addition, the gooseneck mold 18 connects the mold part 24 and a moving mechanism 26 that connects the mold part 24 to the connection part 22 so as to be movable toward and away from the connection part 22 along the second axis Y direction. The urging member 28 for urging in the direction approaching the portion 22, the engaging portion 30 for fitting the mounting portion 20 and the mold portion 24 to the concave and convex portions in the processing posture, and the connecting portion 22 are positioned in the processing posture. Positioning mechanism 32.

装着部２０は、上金型支持部材１２に係合する係合溝２０ａを上部に有している。また、内部に連結部２２が収納される第１収納空間２０ｂを下部に有している。第１収納空間２０ｂは、図５に拡大して示すように、装着部２０の裏面（図５左側面）と下面とに開口する空間であり、水平に配置される上壁部２０ｃと垂直に配置される縦壁部２０ｄとが奥側で１／４円の円弧部２０ｅでつながっている。この円弧部２０ｅは第１軸Ｘを中心とする円弧である。 The mounting portion 20 has an engagement groove 20 a that engages with the upper mold support member 12 in the upper portion. Moreover, it has the 1st storage space 20b in which the connection part 22 is accommodated in the inside. As shown in an enlarged view in FIG. 5, the first storage space 20b is a space that opens to the back surface (left side surface in FIG. 5) and the bottom surface of the mounting portion 20, and is perpendicular to the horizontally disposed upper wall portion 20c. The vertical wall portion 20d to be arranged is connected on the back side by a quarter-circle arc portion 20e. The arc portion 20e is an arc centered on the first axis X.

第１収納空間２０ｂの円弧部２０ｅには、位置決め機構３２を収納する収納穴３２ａが径方向に沿って形成されている。収納穴３２ａには、鋼球３２ｂが進退自在に装着されている。鋼球３２ｂは、コイルばねの形態のばね部材３２ｃにより連結部２２に向けて付勢されている。 A storage hole 32a for storing the positioning mechanism 32 is formed in the arc portion 20e of the first storage space 20b along the radial direction. A steel ball 32b is mounted in the storage hole 32a so as to freely advance and retract. The steel ball 32b is urged toward the connecting portion 22 by a spring member 32c in the form of a coil spring.

連結部２２は、第１収納空間２０ｂに収納可能な大きさを有する正面視矩形の板状の部材である。連結部２２は、装着部２０内に第１軸Ｘに沿って配置された２本の揺動軸３４により装着部２０に揺動自在に支持されている。連結部２２の上部２２ａは、第１収納空間２０ｂの円弧部２０ｅに係合するように、断面において第１軸Ｘを中心とする円弧で丸められている。連結部２２の上部２２ａには、位置決め機構３２を構成する球面状の凹穴３２ｄが形成されている。凹穴３２ｄは連結部２２が加工姿勢にあるときに鋼球３２ｂに係合する位置に形成されている。連結部２２は、縦壁部２０ｄに接触して垂直に配置される加工姿勢と、加工姿勢から９０度揺動して上壁部２０ｃに接触する非加工姿勢とを取り得る。 The connection part 22 is a rectangular plate-like member having a size that can be stored in the first storage space 20b. The connecting portion 22 is swingably supported by the mounting portion 20 by two swing shafts 34 disposed along the first axis X in the mounting portion 20. The upper part 22a of the connecting part 22 is rounded with an arc centered on the first axis X in the cross section so as to engage with the arc part 20e of the first storage space 20b. A spherical concave hole 32 d constituting the positioning mechanism 32 is formed in the upper portion 22 a of the connecting portion 22. The recessed hole 32d is formed at a position where it engages with the steel ball 32b when the connecting portion 22 is in the processing posture. The connecting portion 22 can take a processing posture arranged in contact with the vertical wall portion 20d and a non-processing posture that swings 90 degrees from the processing posture and contacts the upper wall portion 20c.

連結部２２の内部には、移動機構２６を収納するための第２収納空間２２ｂが形成されている。第２収納空間２２ｂは、概ね円柱状に形成されており、奥側の底部には非円形の回り止め部２２ｃが形成されている。 A second storage space 22 b for storing the moving mechanism 26 is formed inside the connecting portion 22. The second storage space 22b is generally formed in a columnar shape, and a non-circular detent portion 22c is formed at the bottom on the back side.

移動機構２６は、回り止め部２２ｃに係合して頭部４０ａが回り止めされるボルト部材４０を有している。ボルト部材４０の頭部４０ａは、回り止め部２２ｃ内で第２軸Ｙ方向に移動可能である。ボルト部材４０は、先端が金型部２４にナット４４により固定されている。ボルト部材４０は、金型部２４を第２軸Ｙ方向に貫通して金型部２４の表面に形成されたナット収納部２４ｂに先端が露出している。このボルト部材４０の露出部分にナット４４を締め込むことで金型部２４が第２軸Ｙ方向に移動可能に連結部２２に連結される。なお、ナット４４とボルト部材４０との間には、回り止め剤が塗布されており、ナット４４が緩みにくくなっている。 The moving mechanism 26 has a bolt member 40 that engages with the rotation preventing portion 22c to prevent the head 40a from rotating. The head 40a of the bolt member 40 is movable in the second axis Y direction within the rotation stopper 22c. The tip of the bolt member 40 is fixed to the mold part 24 by a nut 44. The bolt member 40 has a tip exposed at a nut housing portion 24b formed on the surface of the mold portion 24 through the mold portion 24 in the second axis Y direction. By tightening the nut 44 into the exposed portion of the bolt member 40, the mold part 24 is connected to the connecting part 22 so as to be movable in the second axis Y direction. In addition, the anti-rotation agent is apply | coated between the nut 44 and the bolt member 40, and the nut 44 becomes difficult to loosen.

付勢部材２８は、ボルト部材４０の外周側に圧縮状態で配置されたコイルばねの形態のものである。付勢部材２８は、ボルト部材４０の頭部４０ａと、第２収納空間２２ｂに頭部４０ａと間隔を隔てて装着された止め輪４２に引っ掛けられたワッシャ４３とに両端が係止されている。ボルト部材４０の頭部４０ａが付勢部材２８により付勢されることで、金型部２４は、連結部２２、すなわち装着部２０に接近する方向に付勢される。 The biasing member 28 is in the form of a coil spring disposed in a compressed state on the outer peripheral side of the bolt member 40. Both ends of the urging member 28 are locked to the head 40a of the bolt member 40 and a washer 43 hooked on a retaining ring 42 attached to the second storage space 22b at a distance from the head 40a. . When the head 40 a of the bolt member 40 is urged by the urging member 28, the mold part 24 is urged in a direction approaching the connecting part 22, that is, the mounting part 20.

金型部２４は、斜めに配置された刃先２４ａを有し、Ｖ字状に屈曲したグースネック構造であり、移動機構２６を介して連結部２２と連結されている。金型部２４の上面には、係合部３０を構成する断面が等脚台形形状の係合突起３０ａが形成されている。係合部３０は、係合突起３０ａと、装着部２０の下面に係合突起３０ａに係合するように台形に凹んで形成された係合凹部３０ｂとを有している。係合突起３０ａ及び係合凹部３０ｂは、図３に示すように、装着部２０の下面及び金型部２４の上面に第１軸Ｘ方向の概ね全長にわたって形成されている。このような等脚台形形状の係合部３０を形成したので付勢部材２８の付勢力により通常状態では係合部３０での係合により装着部２０と金型部２４とが自動的に芯出しされる。 The mold part 24 has a gooseneck structure having a cutting edge 24 a disposed obliquely and bent in a V shape, and is connected to the connecting part 22 via a moving mechanism 26. On the upper surface of the mold part 24, an engagement protrusion 30 a having an isosceles trapezoidal cross section is formed. The engaging part 30 has an engaging protrusion 30a and an engaging concave part 30b formed in a trapezoidal shape so as to engage with the engaging protrusion 30a on the lower surface of the mounting part 20. As shown in FIG. 3, the engagement protrusion 30 a and the engagement recess 30 b are formed on the lower surface of the mounting portion 20 and the upper surface of the mold portion 24 over substantially the entire length in the first axis X direction. Since such an isosceles trapezoidal engaging portion 30 is formed, the mounting portion 20 and the mold portion 24 are automatically centered by the engaging portion 30 in the normal state by the biasing force of the biasing member 28. It is issued.

＜グースネック金型の表裏反転作業＞
グースネック金型１８を表裏反転する作業を行う場合には、最初に金型部２４を手で持って図４に示す加工姿勢から図６に示す非加工姿勢に、たとえば９０度揺動させる。非加工姿勢は、隣接する金型との干渉を避けるための姿勢である。これにより、隣接する金型１７と干渉しなくなり、金型部２４を第２軸Ｙ回りに回動させることができる。次に、付勢部材２８の付勢力に抗して金型部２４を第２軸Ｙ方向に引っ張り、係合部３０による装着部２０と金型部２４との係合を解除する。この状態で金型部２４を１８０度回動させて表裏を反転する。この状態を図６に二点差線で示す。最後に、１８０度反転した金型部２４を非加工姿勢から加工姿勢に戻す。加工姿勢に戻ると、鋼球３２ｂが凹穴３２ｄに向かって移動し連結部２２が装着部２０に対して位置決めされ、図４に二点差線で示すように、金型部２４が反転した状態になる。そして、所望の数のグースネック金型１８の反転が終了すると、金型の反転作業は終了する。 <Reverse work of gooseneck mold>
When performing the work of turning the gooseneck mold 18 upside down, the mold part 24 is first held by hand and is swung from the machining position shown in FIG. 4 to the non-working position shown in FIG. The non-working posture is a posture for avoiding interference with an adjacent mold. Thereby, it does not interfere with the adjacent mold 17, and the mold part 24 can be rotated around the second axis Y. Next, the mold part 24 is pulled in the second axis Y direction against the urging force of the urging member 28, and the engagement between the mounting part 20 and the mold part 24 by the engaging part 30 is released. In this state, the mold part 24 is rotated 180 degrees to reverse the front and back. This state is shown by a two-dot difference line in FIG. Finally, the mold part 24 reversed 180 degrees is returned from the non-working posture to the machining posture. When returning to the processing posture, the steel ball 32b moves toward the recessed hole 32d, the connecting portion 22 is positioned with respect to the mounting portion 20, and the mold portion 24 is inverted as shown by a two-dot chain line in FIG. become. Then, when the reversal of the desired number of gooseneck molds 18 is completed, the mold reversal operation is completed.

なお、多数のグースネック金型１８を表裏反転させる場合、一つおきにグースネック金型を非加工姿勢に揺動させ、残りは加工姿勢のままにしてもよい。１つおきに非加工姿勢にすれば、その間のグースネック金型１８は、隣接するグースネック金型１８との干渉が生じなくなるので、加工姿勢のままで表裏反転できる。 When a large number of gooseneck molds 18 are turned upside down, every other gooseneck mold may be swung in a non-working position, and the rest may be left in a working position. If every other one is in a non-working position, the gooseneck mold 18 between them will not interfere with the adjacent gooseneck mold 18 and can therefore be turned upside down in the processing position.

ここでは、金型部２４を単純に１８０度回動させるだけではなく、金型部２４をいったん非加工姿勢に揺動させてから１８０度回動させることにより、隣接する金型との干渉を避けて金型部２４を１８０度回転させることができる。このため、グースネック金型１８を上金型支持部材１２から外すことなくグースネック金型１８の表裏の反転作業を行えるようになる。したがって、グースネック金型１８を着脱することによる芯の確認や原点位置の確認等の作業が不要になり、グースネック金型１８の反転作業を短時間で行えるようになる。 Here, not only simply rotating the mold part 24 by 180 degrees, but also rotating the mold part 24 once in a non-working posture and then rotating the mold part 24 by 180 degrees, interference with the adjacent molds is prevented. Avoiding this, the mold part 24 can be rotated 180 degrees. For this reason, the reverse operation of the gooseneck mold 18 can be performed without removing the gooseneck mold 18 from the upper mold support member 12. Accordingly, it becomes unnecessary to perform operations such as confirmation of the core and confirmation of the origin position by attaching and detaching the gooseneck mold 18, and the inversion work of the gooseneck mold 18 can be performed in a short time.

また、金型部２４を第２軸Ｙ方向に沿って連結部２２と接離するように移動可能な移動機構２６と、金型部２４を連結部２２に接近する方向に付勢する付勢部材２８と、をさらに備えているので、金型部２４が第２軸Ｙ方向に移動できる。このため、加工姿勢のときに装着部２０と金型部２４との間に係合部３０を設け、装着部２０と金型部２４とを加工姿勢の時に芯出しした状態で連結しても、係合部３０を係合状態と離脱状態とに簡単に切り換えできる。また、付勢部材２８により金型部２４が連結部２２に接近する方向に付勢されているので、加工姿勢で装着部２０と金型部２４とが自動的に係合状態になる。 Further, a moving mechanism 26 that can move the mold part 24 so as to be in contact with and away from the connecting part 22 along the second axis Y direction, and an urging force that biases the mold part 24 in a direction approaching the connecting part 22. Further, the mold portion 24 can move in the second axis Y direction. For this reason, the engaging part 30 is provided between the mounting part 20 and the mold part 24 in the processing posture, and the mounting part 20 and the mold part 24 are connected in the centered state in the processing position. The engaging portion 30 can be easily switched between the engaged state and the disengaged state. Further, since the mold part 24 is urged by the urging member 28 in a direction approaching the connecting part 22, the mounting part 20 and the mold part 24 are automatically engaged in the processing posture.

さらに、連結部２２を加工姿勢で位置決めする位置決め機構３２を備えているので、加工姿勢にあるとき装着部２０に連結部２２が位置決めされる。このため、加工時に連結部２２ががたつきにくくなる。 Further, since the positioning mechanism 32 for positioning the connecting portion 22 in the processing posture is provided, the connecting portion 22 is positioned on the mounting portion 20 when in the processing posture. For this reason, the connecting portion 22 is less likely to rattle during processing.

＜他の実施形態＞
（ａ）前記実施形態では、油圧式の着脱装置で上金型支持部材１２に固定されるグースネック金型を例に本発明を説明したが、図７に示すように、ボルト６０により上金型支持部材１１２に固定されるグースネック金型１１８にも本発明を適用できる。なお、グースネック金型１１８のその他の構成は、前記実施形態と同様なため、説明を省略する。 <Other embodiments>
(A) In the above embodiment, the present invention has been described by taking the gooseneck mold fixed to the upper mold support member 12 by a hydraulic attachment and detachment device. However, as shown in FIG. The present invention can also be applied to the gooseneck mold 118 fixed to the support member 112. In addition, since the other structure of the gooseneck metal mold | die 118 is the same as that of the said embodiment, description is abbreviate | omitted.

（ｂ）前記実施形態では、非対称金型としてグースネック金型を例に本発明を説明したが、本発明はこれに限定されず、曲げ機械に装着される表裏面が非対称のすべての金型に適用できる。 (B) In the above embodiment, the present invention has been described by taking a gooseneck mold as an example of an asymmetric mold. However, the present invention is not limited to this, and all molds having asymmetrical front and back surfaces to be mounted on a bending machine. Applicable.

（ｃ）前記実施形態では、位置決め機構３２で加工姿勢の時だけ位置決めしているが、非加工姿勢の時にも位置決めしてもよい。この場合は連結部２２の上面２２ａに凹穴３２ｄと、たとえば９０度間隔を隔ててもうひとつ凹穴を形成すればよい。この場合、加工途中で不要になるが、その後必要になる上金型を着脱することなく再使用できる。 (C) In the above-described embodiment, the positioning mechanism 32 performs positioning only in the machining posture. However, the positioning mechanism 32 may perform positioning in the non-machining posture. In this case, a concave hole 32d may be formed on the upper surface 22a of the connecting portion 22 and another concave hole, for example, spaced by 90 degrees. In this case, it becomes unnecessary during the processing, but it can be reused without attaching and detaching the upper mold that is required thereafter.

（ｄ）前記実施形態では、非加工姿勢と加工姿勢との間隔を９０度に設定した。しかし、非加工姿勢は、隣接する金型との干渉を避けるための姿勢であるため、９０度に限定されず、干渉を避けることが可能な角度であればどのような間隔でもよい。 (D) In the embodiment, the interval between the non-working posture and the working posture is set to 90 degrees. However, since the non-working posture is a posture for avoiding interference with the adjacent mold, the non-working posture is not limited to 90 degrees, and may be any interval as long as the angle can avoid the interference.

本発明は、非対称金型の表裏反転作業の作業時間を短縮できるので、プレスブレーキなどの曲げ機械の非対称金型の分野で有用である。 The present invention is useful in the field of asymmetric molds for bending machines such as press brakes, because the work time for reversing the front and back of an asymmetric mold can be shortened.

本発明の一実施形態に係るグースネック金型が搭載されたプレスブレーキの正面図。The front view of the press brake with which the gooseneck metal mold | die which concerns on one Embodiment of this invention was mounted. そのプレスブレーキ側面図。The press brake side view. 本発明の一実施形態によるグースネック金型の正面一部破断図。1 is a partially cutaway front view of a gooseneck mold according to an embodiment of the present invention. 加工姿勢のグースネック金型の側面図。The side view of the gooseneck metal mold | die of a process posture. 加工姿勢のグースネック金型の側面拡大部分図。The side expanded partial view of the gooseneck metal mold | die of a process posture. 非加工姿勢のグースネック金型の側面図。The side view of the gooseneck metal mold | die of a non-working attitude | position. 他の実施形態のグースネック金型の図４に相当する図。The figure equivalent to FIG. 4 of the gooseneck metal mold | die of other embodiment.

符号の説明Explanation of symbols

１０プレスブレーキ（曲げ機械の一例）
１２，１１２上金型支持部材（金型支持部の一例）
１８，１１８グースネック金型（表裏非対称金型の一例）
２０装着部
２２連結部
２４金型部
２４ａ刃先
２６移動機構
２８付勢部材
３０係合部
３２位置決め機構
10 Press brake (an example of a bending machine)
12,112 Upper mold support member (example of mold support part)
18,118 Gooseneck mold (an example of front and back asymmetric mold)
DESCRIPTION OF SYMBOLS 20 Mounting part 22 Connection part 24 Mold part 24a Cutting edge 26 Moving mechanism 28 Energizing member 30 Engagement part 32 Positioning mechanism

Claims

第１軸方向に延びかつ昇降する金型支持部に装着可能な曲げ機械の表裏非対称金型であって、
前記金型支持部に装着可能な装着部と、
前記第１軸回りに加工姿勢と非加工姿勢との間で揺動自在に前記装着部に連結される連結部と、
前記第１軸と交差する第２軸回りに回動自在に前記連結部に装着され、刃先が斜めに延びる表裏非対称形状の金型部と、
を備えた曲げ機械の表裏非対称金型。 A bending machine front and back asymmetric mold that can be mounted on a mold support that extends in the first axial direction and moves up and down,
A mounting portion attachable to the mold support portion;
A coupling portion coupled to the mounting portion so as to be swingable between a machining posture and a non-machining posture around the first axis;
A mold part having a front and back asymmetric shape, which is mounted on the connecting part so as to be rotatable around a second axis intersecting the first axis, and the blade edge extends obliquely;
Bending machine front and back asymmetric mold with

前記金型部を前記第２軸方向に沿って前記連結部と接離するように移動可能に前記連結部と連結する移動機構と、
前記金型部を前記連結部に接近する方向に付勢する付勢部材と、
をさらに備える、請求項１に記載の曲げ機械の表裏非対称金型。 A moving mechanism for connecting the mold part to the connecting part so as to be movable toward and away from the connecting part along the second axial direction;
A biasing member that biases the mold part in a direction approaching the connecting part;
The asymmetric mold for the front and back of a bending machine according to claim 1, further comprising:

前記装着部と前記金型部との間に設けられ、前記加工姿勢のときに凹凸嵌合する係合部をさらに備える、請求項２に記載の曲げ機械の表裏非対称金型。 The bending machine front and back asymmetric mold | die of Claim 2 further provided with the engaging part which is provided between the said mounting part and the said metal mold | die part, and carries out uneven | corrugated fitting in the said processing attitude | position.

前記連結部を前記加工姿勢で位置決めする位置決め機構をさらに備える、請求項１から３のいずれか１項に記載の曲げ機械の表裏非対称金型。

The bending machine front and back asymmetrical mold | die of any one of Claim 1 to 3 further equipped with the positioning mechanism which positions the said connection part in the said process attitude | position.