WO2024057928A1 - Mold replacing device - Google Patents

Mold replacing device Download PDF

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Publication number
WO2024057928A1
WO2024057928A1 PCT/JP2023/031444 JP2023031444W WO2024057928A1 WO 2024057928 A1 WO2024057928 A1 WO 2024057928A1 JP 2023031444 W JP2023031444 W JP 2023031444W WO 2024057928 A1 WO2024057928 A1 WO 2024057928A1
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WO
WIPO (PCT)
Prior art keywords
mold
upper mold
lower mold
mold exchange
units
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PCT/JP2023/031444
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French (fr)
Japanese (ja)
Inventor
光貴 晩田
Original Assignee
株式会社アマダ
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Publication of WO2024057928A1 publication Critical patent/WO2024057928A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/04—Movable or exchangeable mountings for tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means

Definitions

  • the present disclosure relates to a mold changing device.
  • Patent Document 1 discloses a lower mold exchange part in which a lower mold is placed in a lower mold holder (mold mounting part) provided on a lower table, and an upper mold holder (mold mounting part) provided in an upper table.
  • a mold exchanging device is disclosed, which includes an upper mold exchanging part for arranging an upper mold in a mounting part).
  • the upper die exchange section and the lower die exchange section need to avoid interference with the bending processing range. Therefore, the upper mold exchange section and the lower mold exchange section each stand by at a reference position set on the front side of the mold storage device, which is laterally than the processing range. Further, in conjunction with the vertical movement of the upper table during bending, the upper mold exchange section also moves in the vertical direction relative to the lower mold exchange section. Therefore, the reference position of the upper mold exchange part and the reference position of the lower mold exchange part are set at positions separated in the left-right direction to avoid interference with each other.
  • One aspect of this embodiment includes an upper guide that is fixed to an upper table of a bending machine and extends in the left-right direction along an upper mold holder provided on the upper table;
  • the upper mold exchange part moves and positions the upper mold with respect to the upper mold holder, and the part is fixed to the lower table of the bending machine and extends in the left and right direction along the lower mold holder provided on the lower table.
  • a lower mold exchange section that moves in the left-right direction guided by the lower guide and places the lower mold with respect to the lower mold holder, and the upper table is relative to the lower table.
  • the upper die exchange section and the lower die exchange section move to one side in the left-right direction than the processing range of the bending machine, and
  • the upper mold exchange part and the lower mold exchange part are mold exchange apparatuses that stand by at separate reference positions, and have relief parts that escape in a direction away from the other party at parts that face each other when in the reference positions. be.
  • the upper mold exchange part and the lower mold exchange part each have a relief part, so that the upper mold exchange part and the lower mold exchange part are close to each other in the vertical direction. Even in this case, a spatial separation is ensured between the upper mold exchange section and the lower mold exchange section.
  • the upper mold exchange part and the lower mold exchange part interfere with the object due to the spatial separation between the upper mold exchange part and the lower mold exchange part. This can be suppressed.
  • FIG. 1 is a front view schematically showing the configuration of a bending system including a mold changing device according to the present embodiment.
  • FIG. 2 is a perspective view showing the main parts of the mold storage device.
  • FIG. 3 is a front view showing the upper mold exchange unit on the right side.
  • FIG. 4 is a front view showing the lower mold exchange unit on the left side.
  • FIG. 5 is an explanatory diagram showing left and right upper mold exchange units and left and right lower mold exchange units waiting at the reference position.
  • FIG. 6 is an explanatory diagram showing the left and right upper mold exchange units and the left and right lower mold exchange units waiting at a reference position with the right and left sides reversed with respect to FIG.
  • FIG. 1 is a front view schematically showing the configuration of a bending system including a mold changing device according to the present embodiment.
  • the left-right direction, front-back direction, and up-down direction are used as definitions of directions.
  • the left-right direction and the front-back direction correspond to two directions perpendicular to each other in the horizontal direction, and the up-down direction corresponds to the vertical direction.
  • the front side of the page corresponds to the front direction
  • the back side of the page corresponds to the rear direction.
  • these directions are only used for convenience in explaining the configuration of the bending machine.
  • the mold changing device 5 is fixed to the upper table 14 of the bending machine 1 and is guided by the upper guide 57 and the upper guide 57 that extends in the left-right direction along the upper mold holder 20 provided on the upper table 14.
  • an upper mold exchange section that moves in the left-right direction and places the upper mold 4 with respect to the upper mold holder 20; and a lower mold exchange section that is fixed to the lower table 12 of the bending machine 1 and that
  • a lower guide 58 extends in the left-right direction along the mold holder 18, and a lower mold exchange in which the lower mold 2 is moved in the left-right direction while being guided by the lower guide 58 and is placed relative to the lower mold holder 18. It is equipped with a section.
  • the upper die exchange section and the lower die exchange section are located on the left and right side of the processing range of the bending machine 1.
  • the robots move to one side in the direction and wait at respective reference positions separated from each other in the left-right direction.
  • the upper mold exchange part and the lower mold exchange part have escape parts 555 and 565, which escape in a direction away from the other party, at portions that face each other when in the reference position.
  • the bending system includes a bending machine 1, a mold exchange device 5, and a mold storage device 6.
  • the bending machine 1 is, for example, a press brake, and is a processing machine that performs a bending process on a plate-shaped workpiece W such as a sheet metal by cooperation of a lower mold 2 and an upper mold 4.
  • the bending machine 1 includes a pair of side plates 10, a lower table 12, an upper table 14, and a table drive mechanism 16.
  • the pair of side plates 10 are spaced apart in the left-right direction.
  • a lower table 12 extending in the left-right direction is provided at the lower part of the pair of side plates 10, and an upper table 14 extending in the left-right direction is provided at the upper part of the pair of side plates 10.
  • the upper table 14 is configured to be movable in the vertical direction.
  • a table drive mechanism 16 is provided above each side plate 10 to move the upper table 14 in the vertical direction.
  • the table drive mechanism 16 is, for example, a hydraulic cylinder, but may also be a servo motor.
  • the upper table 14 only needs to be movable relative to the lower table 12, and the bending machine 1 is configured to move the lower table 12 in the vertical direction while the upper table 14 is fixed. You can.
  • a lower mold holder 18 that removably holds a lower mold 2 such as a die is provided above the lower table 12.
  • the lower mold holder 18 extends in the left-right direction so as to cover the entire processing range of the bending machine 1.
  • a holder groove for inserting the shank portion (base portion) of the lower mold 2 is formed in the lower mold holder 18 along the left-right direction.
  • the lower mold holder 18 has a clamp mechanism for fixing the lower mold 2.
  • An upper mold holder 20 that removably holds an upper mold 4 such as a punch is provided below the upper table 14.
  • the upper mold holder 20 extends in the left-right direction so as to cover the entire processing range of the bending machine 1.
  • the upper mold holder 20 has a holder groove formed in the left-right direction into which the shank portion (base portion) of the upper mold 4 is inserted.
  • the upper mold holder 20 has a clamp mechanism for fixing the upper mold 4.
  • a mold storage device 6 is provided adjacent to the right side of the bending machine 1.
  • the mold storage device 6 stores a plurality of lower molds 2 and a plurality of upper molds 4.
  • FIG. 2 is a perspective view showing the main parts of the mold storage device.
  • the mold storage device 6 includes a main body frame 60, a plurality of lower mold stockers 65, and a plurality of upper mold stockers 67.
  • the main body frame 60 includes a base frame 60a that extends in the front-rear direction, and a support column 60b that stands up with respect to the base frame 60a.
  • the plurality of lower mold stockers 65 are supported by a lower support frame 60d provided on the main body frame 60, and are lined up in the front-rear direction along the lower support frame 60d. Each lower mold stocker 65 extends in the left-right direction and holds one or more lower molds 2. Each of the lower mold stockers 65 holds the lower mold 2 with the tip (cutting edge) of the lower mold 2 facing upward.
  • the plurality of upper mold stockers 67 are supported by an upper support frame 60e provided on the main body frame 60, and are lined up in the front-rear direction along the upper support frame 60e. Each upper mold stocker 67 extends in the left-right direction and holds one or more upper molds 4. Each upper mold stocker 67 holds the upper mold 4 in such a manner that the tip (cutting edge) of the upper mold 4 faces downward.
  • the mold exchange device 5 shown in FIG. Replace the lower mold 2 with .
  • the mold storage device 6 includes an upper mold station 70 and a lower mold station 80.
  • the upper mold station 70 is arranged above the mold storage device 6.
  • the upper mold station 70 is cantilevered by a station frame 60c that is disposed above the main body frame 60 and extends in the front-rear direction.
  • the main body frame 60 and, by extension, the mold storage device 6 can be downsized in the left-right direction, compared to a structure in which both ends are supported by a pair of frames.
  • the upper mold station 70 is configured to be movable in the vertical and longitudinal directions.
  • the upper mold station 70 takes out an arbitrary upper mold stocker 67 from among the plurality of upper mold stockers 67.
  • the upper mold station 70 can position the upper mold stocker 67 at a predetermined upper mold exchange position by moving the taken-out upper mold stocker 67 in the vertical and front-back directions.
  • the upper mold exchange position is set at a position adjacent to the right side of the upper mold holder 20.
  • the lower mold station 80 is arranged below the mold storage device 6.
  • the lower mold station 80 is configured to be movable in the vertical and longitudinal directions.
  • the lower mold station 80 takes out an arbitrary lower mold stocker 65 from among the plurality of lower mold stockers 65.
  • the lower mold station 80 can position the lower mold stocker 65 at a predetermined lower mold exchange position by moving the lower mold stocker 65 taken out in the vertical direction and the front-back direction.
  • the lower mold exchange position is set at a position adjacent to the right side of the lower mold holder 18.
  • the mold exchange device 5 includes left and right upper mold exchange units 55L, 55R, left and right lower mold exchange units 56L, 56R, an upper guide 57, and a lower guide 58. ing.
  • the left and right upper mold exchange units 55L and 55R constitute an upper mold exchange section in which the upper mold 4 is arranged with respect to the upper mold holder 20. Specifically, the left and right upper mold exchange units 55L, 55R transfer the upper mold 4 from the upper mold stocker 67 (omitted in FIG. 1) positioned at the upper mold exchange position to the upper mold holder 20. Movement, positioning of the upper mold 4 in the upper mold holder 20, etc. are performed.
  • the left and right upper mold exchange units 55L and 55R are provided on the rear side of the upper table 14. The left and right upper mold exchange units 55L, 55R operate independently of each other.
  • the upper guide 57 is fixed to the rear side of the upper table 14.
  • the upper guide 57 extends in the left-right direction along the upper mold holder 20.
  • the left and right ends of the upper guide 57 extend further in the left and right direction than the upper mold holder 20.
  • the right end of the upper guide 57 extends to the right end of the mold storage device 6.
  • the left and right lower mold exchange units 56L and 56R constitute a lower mold exchange section in which the lower mold 2 is arranged with respect to the lower mold holder 18. Specifically, the left and right lower mold exchange units 56L, 56R transfer the lower mold 2 from the lower mold stocker 65 (omitted in FIG. 1) positioned at the lower mold exchange position to the lower mold holder 18. Movement, positioning of the lower mold 2 in the lower mold holder 18, etc. are performed.
  • the left and right lower mold exchange units 56L and 56R are provided on the rear side of the lower table 12. The left and right lower mold exchange units 56L, 56R operate independently of each other.
  • the lower guide 58 is fixed to the rear side of the lower table 12.
  • the lower guide 58 extends in the left-right direction along the lower mold holder 18.
  • the left and right ends of the lower guide 58 extend further in the left and right direction than the lower mold holder 18.
  • the right end of the lower guide 58 extends to the right end side of the mold storage device 6.
  • the bending machine 1 has a control device 100.
  • the control device 100 is a device that controls the operations of the bending machine 1 and the die changing device 5.
  • the control device 100 is, for example, a computer such as an NC (Numerical Control) device.
  • a computer mainly includes a hardware processor such as a CPU (Central Processing Unit), memory, and various interfaces. Memory and various interfaces are connected to the hardware processor via a bus.
  • a predetermined computer program is installed on the computer.
  • the computer executes a plurality of functions included in the control device 100 by the hardware processor executing the computer program.
  • FIG. 3 is a front view showing the upper mold exchange unit on the right side.
  • the upper mold exchange unit 55R includes an upper base plate 550, an upper mold holding mechanism 551, an upper slider 552, and an upper moving mechanism 553.
  • the upper base plate 550 is a plate material on which a mechanism for exchanging the upper mold 4 is mounted, and has a rectangular shape.
  • This mechanism includes an upper mold holding mechanism 551 and an upper moving mechanism 553.
  • the upper mold holding mechanism 551 includes an upper mold holding member 551a for holding the upper mold 4, and an actuator such as a pneumatic cylinder that moves the upper mold holding member 551a in the front-rear direction and the vertical direction. I'm here.
  • the upper slider 552 is slidably attached to the upper guide 57.
  • the upper mold exchange unit 55R can be moved in the left-right direction via the upper slider 552.
  • the upper moving mechanism 553 moves the upper mold exchange unit 55R in the left-right direction.
  • the upper moving mechanism 553 includes a servo motor, a speed reducer, a pinion gear that meshes with the rack member of the upper guide 57, and the like.
  • the structure of the upper base plate 550 will be described below.
  • the upper base plate 550 includes a pair of vertical edges 550a, 550b extending in the up-down direction and a pair of horizontal edges 550c, 550d extending in the left-right direction.
  • the right vertical edge 550a and the lower horizontal edge 550c form the lower right outer edge of the entire upper mold exchange unit 55R.
  • the mechanisms constituting the upper mold exchange unit 55R are laid out in a concentrated manner, and the upper base plate 550 itself is also miniaturized. That is, the right vertical edge 550a is designed to be as close to the left vertical edge 550b as possible within the range that satisfies the function and strength of the upper base plate 550. Similarly, the lower horizontal edge 550c is designed to be as close to the upper horizontal edge 550d as possible while still satisfying the functionality and strength of the upper base plate 550.
  • a notch is provided in a part of the right vertical edge 550a and is formed in a stepped shape. That is, the lower region 550a1 of the vertical edge 550a is offset to the left from the upper region 550a2 of the vertical edge 550a. Therefore, the corner portion where the right vertical edge 550a and the lower horizontal edge 550c connect is also offset to the left.
  • the right vertical edge 550a is provided with an escape portion 555 from which a part of the vertical edge 550a (lower region 550a1) escapes to the left.
  • this relief portion 555 can be considered as a structure resulting from the stepped shape of the right vertical edge 550a, it can also be considered as a structure resulting from the stepped shape of the lower horizontal edge 550c. That is, the lower horizontal edge 550c is also provided with an escape portion 555 through which a part (right side area) of the horizontal edge 550c escapes upward.
  • FIG. 4 is a front view showing the lower mold exchange unit on the left side.
  • the lower mold exchange unit 56L includes a lower base plate 560, a lower mold holding mechanism 561, a lower slider 562, and a lower moving mechanism 563.
  • the individual elements are the same as the upper base plate 550, upper mold holding mechanism 551, upper slider 552, and upper moving mechanism 553 in the upper mold exchange unit 55R.
  • the lower base plate 560 includes a pair of vertical edges 560a, 560b extending in the up-down direction and a pair of horizontal edges 560c, 560d extending in the left-right direction. Among the four edges 560a, 560b, 560c, and 560d, the left vertical edge 560a and the upper horizontal edge 560c form the upper left outer edge of the entire lower mold exchange unit 56R.
  • the mechanisms that make up the lower mold exchange unit 56L are laid out in a concentrated manner, and the lower base plate 560 itself is also miniaturized. That is, the left vertical edge 560a is designed to be as close to the right vertical edge 560b as possible within a range that satisfies the function and strength of the lower base plate 560. Similarly, the upper horizontal edge 560c is designed to be as close to the lower horizontal edge 560d as possible while still satisfying the functionality and strength of the lower base plate 560.
  • a notch is provided in a part of the left vertical edge 560a and is formed in a stepped shape. That is, the upper region 560a1 of the vertical edge 560a is offset to the right from the lower region 560a2 of the vertical edge 560a. Therefore, the corner portion where the left vertical edge 560a and the upper horizontal edge 560c connect is also offset to the right.
  • the left vertical edge 560a is provided with an escape portion 565 from which a part of the vertical edge 560a (upper region 560a1) escapes to the right.
  • this escape portion 565 can be considered as a structure resulting from the step shape of the left vertical edge 560a, it can also be considered as a structure resulting from the step shape of the upper horizontal edge 560c. That is, the upper horizontal edge 560c is also provided with an escape portion 565 through which a part (left side area) of the horizontal edge 560c escapes downward.
  • FIG. 5 is an explanatory diagram showing the left and right upper mold exchange units and the left and right lower mold exchange units waiting at the reference position.
  • the upper table 14 moves downward toward the lower table 12 to bend the workpiece W.
  • the left and right upper mold exchange units 55L, 55R move to the right side of the processing range of the bending machine 1 and wait at a reference position.
  • the left and right lower mold exchange units 56L and 56R also move to the right side of the processing range of the bending machine 1 and wait at the reference position.
  • the reference positions of the left and right upper mold exchange units 55L, 55R and the reference positions of the left and right lower mold exchange units 56L, 56R are set on the front side of the mold storage device 6, respectively.
  • the left and right upper mold exchange units 55L and 55R are at the reference position, they are arranged side by side close to each other.
  • the left and right lower mold exchange units 56L, 56R are at the standard position, they are arranged side by side in a state close to each other.
  • the reference positions of the left and right upper mold exchange units 55L, 55R and the reference positions of the left and right lower mold exchange units 56L, 56R are separated in the left-right direction.
  • the left and right upper mold exchange units 55L, 55R are located on the left side of the left and right lower mold exchange units 56L, 56R, and conversely, the left and right lower mold exchange units 56L, 56R are located on the left and right upper mold exchange units 56L, 56R. It is located on the right side of the mold exchange units 55L and 55R.
  • the upper mold exchange unit 55R on the right side is located to the left of the lower mold exchange unit 56L on the left side, and the lower mold exchange unit 56L on the left side is located further to the left than the upper mold exchange unit 55R on the right side. is also on the right.
  • the lower right outer edge of the upper mold exchange unit 55R on the right side faces the lower mold exchange unit 56L on the left side.
  • the upper left outer edge of the left lower mold exchange unit 56L faces the right upper mold exchange unit 55R.
  • the upper base plate 550 that forms the outer edge of the lower right side of the upper mold exchange unit 55R on the right side has a relief part 555 that escapes in the direction away from the lower mold exchange unit 56L on the left side (leftward and upward direction).
  • the lower base plate 560 that forms the outer edge of the upper left side of the lower mold exchange unit 56R on the left side has an escape part 565 that escapes in the direction away from the upper mold exchange unit 55R on the right side (rightward and downward direction). are doing.
  • the upper mold changing section includes the left and right upper mold changing units 55L and 55R that are configured symmetrically, and the relief part 555 of the upper mold changing section are provided in the left and right upper mold exchange units 55L and 55R, respectively.
  • the lower mold exchange section includes left and right lower mold exchange units 56L and 56R that are configured symmetrically, and the relief part 565 of the lower mold exchange section is connected to the left and right lower mold exchange units 56L and 56R. Each is provided.
  • interference between the upper mold exchange part and the lower mold exchange part, which are opposed to each other, and objects between the upper mold exchange part and the lower mold exchange part can be prevented. interference can also be suppressed.
  • FIG. 6 is an explanatory diagram showing the left and right upper mold exchange units and the left and right lower mold exchange units waiting at the reference position with the left and right sides reversed with respect to FIG. 5.
  • FIG. 6 a situation is assumed in which the reference positions of the left and right upper mold exchange units 55L, 55R and the reference positions of the left and right lower mold exchange units 56L, 56R are horizontally reversed.
  • the mold changing device 5 of the present embodiment even if the reference position is horizontally reversed, there is no space between the upper mold changing unit 55L on the left side and the lower mold changing unit 56R on the right side, which face each other. , a spatial separation of a distance S1 in the vertical direction and a distance S2 in the horizontal direction is ensured.
  • the relief portion 555 of the upper mold exchange section may be provided only in one of the upper mold exchange units 55L and 55R on the lower mold exchange section side.
  • the relief portion 565 of the lower mold exchange section may be provided only in one of the lower mold exchange units 56L, 56R on the upper mold exchange section side.
  • the relief portion 555 is provided on a vertical edge 550a of the upper base plate 550 that extends in the vertical direction
  • the relief portion 565 is provided on a vertical edge 560a of the lower base plate 560 that extends in the vertical direction.
  • the escape portion 555 can be set in the left and right upper mold exchange units 55L, 55R at a portion facing the left and right lower mold exchange units 56L, 56R.
  • relief portions 565 can be set in the left and right lower mold exchange units 56L, 56R at positions facing the left and right upper mold exchange units 55L, 55R.
  • a mold storage device 6 that stores the upper mold 4 and the lower mold 2 is arranged on the right side of the bending machine 1.
  • the upper mold exchange section exchanges the upper mold 4 between the upper mold holder 20 and the mold storage device 6.
  • the lower mold exchange section exchanges the lower mold 2 between the lower mold holder 18 and the mold storage device 6.
  • the upper guide 57 and the lower guide 58 each extend to the front side of the mold storage device 6, and the reference position is located at the front side of the mold storage device 6.
  • the size of the mold storage device 6 in the left and right direction is also becoming smaller. Therefore, the relative distance between the upper mold exchange part and the lower mold exchange part when they are at the reference position becomes short.
  • the presence of the relief parts 555 and 565 causes interference between the upper mold exchange part and the lower mold exchange part, and furthermore, a gap between the upper mold exchange part and the lower mold exchange part. Interference with certain objects can also be suppressed.
  • the mechanisms configuring the left and right upper mold exchange units 55L and 55R are laid out in a consolidated manner, and the left and right upper mold exchange units 55L and 55R are also miniaturized. ing. If the left and right upper mold exchange units 55L and 55R are large in size, even if the right upper mold exchange unit 55R moves to the right end of the upper guide 57, the left upper mold exchange unit 55L cannot be moved all the way to the right side. , the upper mold holding member 551a is located relatively on the left side.
  • the upper mold holding member 551a of the left upper mold exchange unit 55L is located to the left of the upper mold 4 at the right end, and It is conceivable that the upper mold exchange unit 55L cannot hold the upper mold 4 at the right end.
  • the entire unit is downsized, so the left upper mold exchange unit 55L can be moved further to the right side.
  • the upper mold 4 at the right end can be held by either the left or right upper mold exchange unit 55L, 55R.
  • the upper mold 4 can be efficiently arranged by the upper mold exchange units 55L and 55R. Note that such merits are the same for the left and right lower mold exchange units 56L and 56R.

Abstract

A mold replacing device (5) comprises: an upper guide (57) extending in the left-right direction along an upper mold holder (20); an upper mold replacing part that moves in the left-right direction while being guided by the upper guide (57), and places an upper mold (4) on the upper mold holder (20); a lower guide (58) extending in the left-right direction along a lower mold holder (18); and a lower mold replacing part that moves in the left-right direction while being guided by the lower guide (58), and places a lower mold (2) on the lower mold holder (18). During bending, the upper mold replacing part and the lower mold replacing part stand by at respective reference positions separated from each other in the left-right direction. The upper mold replacing part and the lower mold replacing part include, at sites facing each other when in the reference positions, retracting sections (555, 565) that each retract in a direction away from the counterpart thereof.

Description

金型交換装置Mold changing device
　本開示は、金型交換装置に関する。 The present disclosure relates to a mold changing device.
　プレスブレーキなどの曲げ加工機と、曲げ加工機の側方に隣接配置された金型収納装置との間で、金型交換装置を用いて金型を自動で交換する技術が知られている。例えば特許文献１には、下部テーブルに設けられた下金型ホルダ（金型装着部）に下金型を配置する下金型交換部と、上部テーブルに設けられた上金型ホルダ（金型装着部）に上金型を配置する上金型交換部と、を備えた金型交換装置が開示されている。 A technique is known in which a mold exchange device is used to automatically exchange molds between a bending machine such as a press brake and a mold storage device arranged adjacent to the side of the bending machine. For example, Patent Document 1 discloses a lower mold exchange part in which a lower mold is placed in a lower mold holder (mold mounting part) provided on a lower table, and an upper mold holder (mold mounting part) provided in an upper table. A mold exchanging device is disclosed, which includes an upper mold exchanging part for arranging an upper mold in a mounting part).
　曲げ加工機が曲げ加工を行う場合、上金型交換部及び下金型交換部は、曲げ加工の加工範囲との干渉を避ける必要がある。そのため、上金型交換部及び下金型交換部は、加工範囲よりも側方にある金型収納装置の前側に設定された基準位置でそれぞれ待機する。また、曲げ加工時の上部テーブルの上下方向の移動に連動して、上金型交換部も下金型交換部に対して上下方向に移動する。そのため、上金型交換部の基準位置及び下金型交換部の基準位置は、互いの干渉を避けるために左右方向に離隔した位置に設定されている。 When the bending machine performs bending, the upper die exchange section and the lower die exchange section need to avoid interference with the bending processing range. Therefore, the upper mold exchange section and the lower mold exchange section each stand by at a reference position set on the front side of the mold storage device, which is laterally than the processing range. Further, in conjunction with the vertical movement of the upper table during bending, the upper mold exchange section also moves in the vertical direction relative to the lower mold exchange section. Therefore, the reference position of the upper mold exchange part and the reference position of the lower mold exchange part are set at positions separated in the left-right direction to avoid interference with each other.
特開２０１６－０８３６７３号公報Japanese Patent Application Publication No. 2016-083673
　とこで、大型機械である加工機においても省スペース化が求められており、金型収納装置における左右方向のサイズについても小型化が望まれている。すなわち、上金型交換部の基準位置と下金型交換部の基準位置とが接近する傾向にある。上金型交換部と下金型交換部との間に十分な隔たりが確保できない場合には、上金型交換部と下金型交換部との間にある物体と、上金型交換部及び下金型交換部とが干渉してしまう可能性がある。 Now, there is a demand for space saving in processing machines, which are large machines, and a reduction in the size of the mold storage device in the left and right direction is also desired. That is, the reference position of the upper mold exchange part and the reference position of the lower mold exchange part tend to approach each other. If a sufficient gap cannot be secured between the upper mold exchange part and the lower mold exchange part, objects between the upper mold exchange part and the lower mold exchange part and the upper mold exchange part and There is a possibility of interference with the lower mold exchange section.
　本実施形態の一態様は、曲げ加工機の上部テーブルに固定され、上部テーブルに設けられた上金型ホルダに沿って左右方向に延在する上部ガイドと、上部ガイドに案内されて左右方向に移動し、上金型ホルダに対して上金型を配置する上金型交換部と、曲げ加工機の下部テーブルに固定され、下部テーブルに設けられた下金型ホルダに沿って左右方向に延在する下部ガイドと、下部ガイドに案内されて左右方向に移動し、下金型ホルダに対して下金型を配置する下金型交換部と、を備え、上部テーブルが下部テーブルに対して相対的に接近してワークに対して曲げ加工を行う場合、上金型交換部及び下金型交換部は、曲げ加工機の加工範囲よりも左右方向の一方側に移動して、互いに左右方向に離隔したそれぞれの基準位置で待機し、上金型交換部及び下金型交換部は、基準位置にあるときに互いに対向する部位に、相手から離れる方向に逃げる逃げ部を有する金型交換装置である。 One aspect of this embodiment includes an upper guide that is fixed to an upper table of a bending machine and extends in the left-right direction along an upper mold holder provided on the upper table; The upper mold exchange part moves and positions the upper mold with respect to the upper mold holder, and the part is fixed to the lower table of the bending machine and extends in the left and right direction along the lower mold holder provided on the lower table. a lower mold exchange section that moves in the left-right direction guided by the lower guide and places the lower mold with respect to the lower mold holder, and the upper table is relative to the lower table. When bending a workpiece in close proximity to each other, the upper die exchange section and the lower die exchange section move to one side in the left-right direction than the processing range of the bending machine, and The upper mold exchange part and the lower mold exchange part are mold exchange apparatuses that stand by at separate reference positions, and have relief parts that escape in a direction away from the other party at parts that face each other when in the reference positions. be.
　本実施形態の一態様によれば、上金型交換部及び下金型交換部がそれぞれ逃げ部を有しているので、上金型交換部と下金型交換部とが上下方向に接近した場合でも、上金型交換部と下金型交換部との間には、空間的な隔たりが確保される。 According to one aspect of the present embodiment, the upper mold exchange part and the lower mold exchange part each have a relief part, so that the upper mold exchange part and the lower mold exchange part are close to each other in the vertical direction. Even in this case, a spatial separation is ensured between the upper mold exchange section and the lower mold exchange section.
　本実施形態の一態様によれば、上金型交換部と下金型交換部との間にある空間的な隔たりにより、上金型交換部及び下金型交換部が物体に対して干渉することを抑制することができる。 According to one aspect of the present embodiment, the upper mold exchange part and the lower mold exchange part interfere with the object due to the spatial separation between the upper mold exchange part and the lower mold exchange part. This can be suppressed.
図１は、本実施形態に係る金型交換装置を含む曲げ加工システムの構成を模式的に示す正面図である。FIG. 1 is a front view schematically showing the configuration of a bending system including a mold changing device according to the present embodiment. 図２は、金型収納装置の要部を示す斜視図である。FIG. 2 is a perspective view showing the main parts of the mold storage device. 図３は、右側の上金型交換ユニットを示す正面図である。FIG. 3 is a front view showing the upper mold exchange unit on the right side. 図４は、左側の下金型交換ユニットを示す正面図である。FIG. 4 is a front view showing the lower mold exchange unit on the left side. 図５は、基準位置で待機する左右の上金型交換ユニット及び左右の下金型交換ユニットを示す説明図である。FIG. 5 is an explanatory diagram showing left and right upper mold exchange units and left and right lower mold exchange units waiting at the reference position. 図６は、図５に対して左右を反転させた基準位置で待機する左右の上金型交換ユニット及び左右の下金型交換ユニットを示す説明図である。FIG. 6 is an explanatory diagram showing the left and right upper mold exchange units and the left and right lower mold exchange units waiting at a reference position with the right and left sides reversed with respect to FIG.
　以下、図面を参照し、本実施形態に係る金型交換装置について説明する。 Hereinafter, a mold changing device according to this embodiment will be described with reference to the drawings.
　図１は、本実施形態に係る金型交換装置を含む曲げ加工システムの構成を模式的に示す正面図である。以下の説明では、方向の定義として、左右方向、前後方向、及び上下方向を用いる。左右方向及び前後方向は、水平方向において直交する２つの方向に対応し、上下方向は鉛直方向に対応する。図１において、紙面手前側が前方向に相当し、紙面奥側が後方向に相当する。もっとも、これらの方向は、曲げ加工機の構成を説明するために、便宜的に用いられるに過ぎない。 FIG. 1 is a front view schematically showing the configuration of a bending system including a mold changing device according to the present embodiment. In the following description, the left-right direction, front-back direction, and up-down direction are used as definitions of directions. The left-right direction and the front-back direction correspond to two directions perpendicular to each other in the horizontal direction, and the up-down direction corresponds to the vertical direction. In FIG. 1, the front side of the page corresponds to the front direction, and the back side of the page corresponds to the rear direction. However, these directions are only used for convenience in explaining the configuration of the bending machine.
　金型交換装置５は、曲げ加工機１の上部テーブル１４に固定され、上部テーブル１４に設けられた上金型ホルダ２０に沿って左右方向に延在する上部ガイド５７と、上部ガイド５７に案内されて左右方向に移動し、上金型ホルダ２０に対して上金型４を配置する上金型交換部と、曲げ加工機１の下部テーブル１２に固定され、下部テーブル１２に設けられた下金型ホルダ１８に沿って左右方向に延在する下部ガイド５８と、下部ガイド５８に案内されて左右方向に移動し、下金型ホルダ１８に対して下金型２を配置する下金型交換部、を備える。上部テーブル１４が下部テーブル１２に対して相対的に接近してワークＷに対して曲げ加工を行う場合、上金型交換部及び下金型交換部は、曲げ加工機１の加工範囲よりも左右方向の一方側に移動して、互いに左右方向に離隔したそれぞれの基準位置で待機する。上金型交換部及び下金型交換部は、基準位置にあるときに互いに対向する部位に、相手から離れる方向に逃げる逃げ部５５５、５６５を有している。 The mold changing device 5 is fixed to the upper table 14 of the bending machine 1 and is guided by the upper guide 57 and the upper guide 57 that extends in the left-right direction along the upper mold holder 20 provided on the upper table 14. an upper mold exchange section that moves in the left-right direction and places the upper mold 4 with respect to the upper mold holder 20; and a lower mold exchange section that is fixed to the lower table 12 of the bending machine 1 and that A lower guide 58 extends in the left-right direction along the mold holder 18, and a lower mold exchange in which the lower mold 2 is moved in the left-right direction while being guided by the lower guide 58 and is placed relative to the lower mold holder 18. It is equipped with a section. When the upper table 14 is relatively close to the lower table 12 and bends the workpiece W, the upper die exchange section and the lower die exchange section are located on the left and right side of the processing range of the bending machine 1. The robots move to one side in the direction and wait at respective reference positions separated from each other in the left-right direction. The upper mold exchange part and the lower mold exchange part have escape parts 555 and 565, which escape in a direction away from the other party, at portions that face each other when in the reference position.
　つぎに、曲げ加工システムの詳細について説明する。曲げ加工システムは、曲げ加工機１と、金型交換装置５と、金型収納装置６と、を備えている。 Next, details of the bending system will be explained. The bending system includes a bending machine 1, a mold exchange device 5, and a mold storage device 6.
　曲げ加工機１は、例えばプレスブレーキであり、下金型２と上金型４との協働により、板金などの板状のワークＷに対して曲げ加工を行う加工機である。 The bending machine 1 is, for example, a press brake, and is a processing machine that performs a bending process on a plate-shaped workpiece W such as a sheet metal by cooperation of a lower mold 2 and an upper mold 4.
　曲げ加工機１は、一対のサイドプレート１０と、下部テーブル１２と、上部テーブル１４と、テーブル駆動機構１６と、を備えている。 The bending machine 1 includes a pair of side plates 10, a lower table 12, an upper table 14, and a table drive mechanism 16.
　一対のサイドプレート１０は、左右方向に離隔して配置されている。一対のサイドプレート１０の下部には、左右方向に延びた下部テーブル１２が設けられ、一対のサイドプレート１０の上部には、左右方向に延びた上部テーブル１４が設けられている。上部テーブル１４は、上下方向に移動可能に構成されている。個々のサイドプレート１０の上部には、上部テーブル１４を上下方向に移動させるテーブル駆動機構１６が設けられている。テーブル駆動機構１６は、例えば油圧シリンダであるが、サーボモータなどでもよい。上部テーブル１４は、下部テーブル１２に対して相対的に移動可能であればよく、曲げ加工機１は、上部テーブル１４を固定した状態で、下部テーブル１２を上下方向へ移動させるように構成されていてもよい。 The pair of side plates 10 are spaced apart in the left-right direction. A lower table 12 extending in the left-right direction is provided at the lower part of the pair of side plates 10, and an upper table 14 extending in the left-right direction is provided at the upper part of the pair of side plates 10. The upper table 14 is configured to be movable in the vertical direction. A table drive mechanism 16 is provided above each side plate 10 to move the upper table 14 in the vertical direction. The table drive mechanism 16 is, for example, a hydraulic cylinder, but may also be a servo motor. The upper table 14 only needs to be movable relative to the lower table 12, and the bending machine 1 is configured to move the lower table 12 in the vertical direction while the upper table 14 is fixed. You can.
　下部テーブル１２の上側には、ダイなどの下金型２を着脱可能に保持する下金型ホルダ１８が設けられている。下金型ホルダ１８は、曲げ加工機１の加工範囲の全域をカバーするように、左右方向に沿って延在している。下金型ホルダ１８には、下金型２のシャンク部（基部）を挿入するためのホルダ溝が左右方向に沿って形成されている。下金型ホルダ１８は、下金型２を固定するクランプ機構を有している。 A lower mold holder 18 that removably holds a lower mold 2 such as a die is provided above the lower table 12. The lower mold holder 18 extends in the left-right direction so as to cover the entire processing range of the bending machine 1. A holder groove for inserting the shank portion (base portion) of the lower mold 2 is formed in the lower mold holder 18 along the left-right direction. The lower mold holder 18 has a clamp mechanism for fixing the lower mold 2.
　上部テーブル１４の下側には、パンチなどの上金型４を着脱可能に保持する上金型ホルダ２０が設けられている。上金型ホルダ２０は、曲げ加工機１の加工範囲の全域をカバーするように、左右方向に沿って延在している。上金型ホルダ２０には、上金型４のシャンク部（基部）を挿入するためのホルダ溝が左右方向に沿って形成されている。上金型ホルダ２０は、上金型４を固定するクランプ機構を有している。 An upper mold holder 20 that removably holds an upper mold 4 such as a punch is provided below the upper table 14. The upper mold holder 20 extends in the left-right direction so as to cover the entire processing range of the bending machine 1. The upper mold holder 20 has a holder groove formed in the left-right direction into which the shank portion (base portion) of the upper mold 4 is inserted. The upper mold holder 20 has a clamp mechanism for fixing the upper mold 4.
　曲げ加工機１の右側には、金型収納装置６が隣接して設けられている。金型収納装置６は、複数の下金型２及び複数の上金型４を収納する。 A mold storage device 6 is provided adjacent to the right side of the bending machine 1. The mold storage device 6 stores a plurality of lower molds 2 and a plurality of upper molds 4.
　図２は、金型収納装置の要部を示す斜視図である。金型収納装置６は、本体フレーム６０と、複数の下金型ストッカ６５と、複数の上金型ストッカ６７と、を備えている。 FIG. 2 is a perspective view showing the main parts of the mold storage device. The mold storage device 6 includes a main body frame 60, a plurality of lower mold stockers 65, and a plurality of upper mold stockers 67.
　本体フレーム６０は、前後方向に延びるベースフレーム６０ａと、ベースフレーム６０ａに対して起立する支柱６０ｂと、を備えている。 The main body frame 60 includes a base frame 60a that extends in the front-rear direction, and a support column 60b that stands up with respect to the base frame 60a.
　複数の下金型ストッカ６５は、本体フレーム６０に設けられた下部支持フレーム６０ｄに支持されており、下部支持フレーム６０ｄに沿って前後方向に並んでいる。個々の下金型ストッカ６５は、左右方向に延在し、１つ以上の下金型２を保持している。個々の下金型ストッカ６５は、下金型２の先端（刃先）が上向きとなる姿勢で、下金型２を保持している。 The plurality of lower mold stockers 65 are supported by a lower support frame 60d provided on the main body frame 60, and are lined up in the front-rear direction along the lower support frame 60d. Each lower mold stocker 65 extends in the left-right direction and holds one or more lower molds 2. Each of the lower mold stockers 65 holds the lower mold 2 with the tip (cutting edge) of the lower mold 2 facing upward.
　複数の上金型ストッカ６７は、本体フレーム６０に設けられた上部支持フレーム６０ｅに支持されており、上部支持フレーム６０ｅに沿って前後方向に並んでいる。個々の上金型ストッカ６７は、左右方向に延在しており、１つ以上の上金型４を保持している。個々の上金型ストッカ６７は、上金型４の先端（刃先）が下向きとなる姿勢で、上金型４を保持している。 The plurality of upper mold stockers 67 are supported by an upper support frame 60e provided on the main body frame 60, and are lined up in the front-rear direction along the upper support frame 60e. Each upper mold stocker 67 extends in the left-right direction and holds one or more upper molds 4. Each upper mold stocker 67 holds the upper mold 4 in such a manner that the tip (cutting edge) of the upper mold 4 faces downward.
　図１に示す金型交換装置５は、金型収納装置６と上金型ホルダ２０との間で上金型４の交換を行うとともに、金型収納装置６と下金型ホルダ１８との間で下金型２の交換を行う。金型収納装置６は、上金型ステーション７０と、下金型ステーション８０と、を備えている。 The mold exchange device 5 shown in FIG. Replace the lower mold 2 with . The mold storage device 6 includes an upper mold station 70 and a lower mold station 80.
　上金型ステーション７０は、金型収納装置６の上側に配置されている。上金型ステーション７０は、本体フレーム６０の上側に配設された、前後方向に延びるステーションフレーム６０ｃに片持ち支持されている。上金型ステーション７０をステーションフレーム６０ｃによって片持ち支持することで、一対のフレームによって両端支持する構成に比べて、本体フレーム６０、ひいては金型収納装置６を左右方向に小型化することができる。 The upper mold station 70 is arranged above the mold storage device 6. The upper mold station 70 is cantilevered by a station frame 60c that is disposed above the main body frame 60 and extends in the front-rear direction. By supporting the upper mold station 70 in a cantilever manner by the station frame 60c, the main body frame 60 and, by extension, the mold storage device 6 can be downsized in the left-right direction, compared to a structure in which both ends are supported by a pair of frames.
　図２では上金型ステーション７０は省略されているが、上金型ステーション７０は、上下方向及び前後方向に移動可能に構成されている。上金型ステーション７０は、複数の上金型ストッカ６７の中から、任意の上金型ストッカ６７を取り出す。上金型ステーション７０は、取り出した上金型ストッカ６７を上下方向及び前後方向に移動することによって、この上金型ストッカ６７を所定の上金型交換位置に位置決めすることができる。上金型交換位置は、上金型ホルダ２０の右側に隣接する位置に設定されている。 Although the upper mold station 70 is omitted in FIG. 2, the upper mold station 70 is configured to be movable in the vertical and longitudinal directions. The upper mold station 70 takes out an arbitrary upper mold stocker 67 from among the plurality of upper mold stockers 67. The upper mold station 70 can position the upper mold stocker 67 at a predetermined upper mold exchange position by moving the taken-out upper mold stocker 67 in the vertical and front-back directions. The upper mold exchange position is set at a position adjacent to the right side of the upper mold holder 20.
　下金型ステーション８０は、金型収納装置６の下側に配置されている。下金型ステーション８０は、上下方向及び前後方向に移動可能に構成されている。下金型ステーション８０は、複数の下金型ストッカ６５の中から、任意の下金型ストッカ６５を取り出す。下金型ステーション８０は、取り出した下金型ストッカ６５を上下方向及び前後方向に移動することによって、この下金型ストッカ６５を所定の下金型交換位置に位置決めすることができる。下金型交換位置は、下金型ホルダ１８の右側に隣接する位置に設定されている。 The lower mold station 80 is arranged below the mold storage device 6. The lower mold station 80 is configured to be movable in the vertical and longitudinal directions. The lower mold station 80 takes out an arbitrary lower mold stocker 65 from among the plurality of lower mold stockers 65. The lower mold station 80 can position the lower mold stocker 65 at a predetermined lower mold exchange position by moving the lower mold stocker 65 taken out in the vertical direction and the front-back direction. The lower mold exchange position is set at a position adjacent to the right side of the lower mold holder 18.
　図１に示すように、金型交換装置５は、左右の上金型交換ユニット５５Ｌ、５５Ｒと、左右の下金型交換ユニット５６Ｌ、５６Ｒと、上部ガイド５７と、下部ガイド５８と、を備えている。 As shown in FIG. 1, the mold exchange device 5 includes left and right upper mold exchange units 55L, 55R, left and right lower mold exchange units 56L, 56R, an upper guide 57, and a lower guide 58. ing.
　左右の上金型交換ユニット５５Ｌ、５５Ｒは、上金型ホルダ２０に対して上金型４を配置する上金型交換部を構成している。具体的には、左右の上金型交換ユニット５５Ｌ、５５Ｒは、上金型交換位置に位置決めされた上金型ストッカ６７（図１では省略）から上金型ホルダ２０への上金型４の移動、上金型ホルダ２０における上金型４の位置決めなどを行う。左右の上金型交換ユニット５５Ｌ、５５Ｒは、上部テーブル１４の後側に設けられている。左右の上金型交換ユニット５５Ｌ、５５Ｒは、互いに独立して動作する。 The left and right upper mold exchange units 55L and 55R constitute an upper mold exchange section in which the upper mold 4 is arranged with respect to the upper mold holder 20. Specifically, the left and right upper mold exchange units 55L, 55R transfer the upper mold 4 from the upper mold stocker 67 (omitted in FIG. 1) positioned at the upper mold exchange position to the upper mold holder 20. Movement, positioning of the upper mold 4 in the upper mold holder 20, etc. are performed. The left and right upper mold exchange units 55L and 55R are provided on the rear side of the upper table 14. The left and right upper mold exchange units 55L, 55R operate independently of each other.
　上部ガイド５７は、上部テーブル１４の後側に固定されている。上部ガイド５７は、上金型ホルダ２０に沿って左右方向に延在している。上部ガイド５７の左右端は、上金型ホルダ２０よりも左右方向に延在している。例えば、上部ガイド５７の右端は、金型収納装置６の右端側まで延在している。 The upper guide 57 is fixed to the rear side of the upper table 14. The upper guide 57 extends in the left-right direction along the upper mold holder 20. The left and right ends of the upper guide 57 extend further in the left and right direction than the upper mold holder 20. For example, the right end of the upper guide 57 extends to the right end of the mold storage device 6.
　左右の下金型交換ユニット５６Ｌ、５６Ｒは、下金型ホルダ１８に対して下金型２を配置する下金型交換部を構成している。具体的には、左右の下金型交換ユニット５６Ｌ、５６Ｒは、下金型交換位置に位置決めされた下金型ストッカ６５（図１では省略）から下金型ホルダ１８への下金型２の移動、下金型ホルダ１８における下金型２の位置決めなどを行う。左右の下金型交換ユニット５６Ｌ、５６Ｒは、下部テーブル１２の後側に設けられている。左右の下金型交換ユニット５６Ｌ、５６Ｒは、互いに独立して動作する。 The left and right lower mold exchange units 56L and 56R constitute a lower mold exchange section in which the lower mold 2 is arranged with respect to the lower mold holder 18. Specifically, the left and right lower mold exchange units 56L, 56R transfer the lower mold 2 from the lower mold stocker 65 (omitted in FIG. 1) positioned at the lower mold exchange position to the lower mold holder 18. Movement, positioning of the lower mold 2 in the lower mold holder 18, etc. are performed. The left and right lower mold exchange units 56L and 56R are provided on the rear side of the lower table 12. The left and right lower mold exchange units 56L, 56R operate independently of each other.
　下部ガイド５８は、下部テーブル１２の後側に固定されている。下部ガイド５８は、下金型ホルダ１８に沿って左右方向に延在している。下部ガイド５８の左右端は、下金型ホルダ１８よりも左右方向に延在している。例えば、下部ガイド５８の右端は、金型収納装置６の右端側まで延在している。 The lower guide 58 is fixed to the rear side of the lower table 12. The lower guide 58 extends in the left-right direction along the lower mold holder 18. The left and right ends of the lower guide 58 extend further in the left and right direction than the lower mold holder 18. For example, the right end of the lower guide 58 extends to the right end side of the mold storage device 6.
　曲げ加工機１は、制御装置１００を有している。制御装置１００は、曲げ加工機１、金型交換装置５の動作を制御する装置である。制御装置１００は、例えばＮＣ（Numerical Control：数値制御）装置などのコンピュータである。コンピュータは、ＣＰＵ（Central Processing Unit：中央処理装置）などのハードウェアプロセッサと、メモリと、各種のインターフェースと、を主体に構成されている。メモリ、各種のインターフェースは、バスを介してハードウェアプロセッサに接続されている。 The bending machine 1 has a control device 100. The control device 100 is a device that controls the operations of the bending machine 1 and the die changing device 5. The control device 100 is, for example, a computer such as an NC (Numerical Control) device. A computer mainly includes a hardware processor such as a CPU (Central Processing Unit), memory, and various interfaces. Memory and various interfaces are connected to the hardware processor via a bus.
　コンピュータには、所定のコンピュータプログラムがインストールされている。ハードウェアプロセッサがコンピュータプログラムを実行することにより、コンピュータは、制御装置１００が備える複数の機能を実行する。 A predetermined computer program is installed on the computer. The computer executes a plurality of functions included in the control device 100 by the hardware processor executing the computer program.
　以下、左右の上金型交換ユニット５５Ｌ、５５Ｒの構造について説明する。左右の上金型交換ユニット５５Ｌ、５５Ｒは、左右対称に構成されているため、以下、右側の上金型交換ユニット５５Ｒを例示して説明を行う。図３は、右側の上金型交換ユニットを示す正面図である。 Hereinafter, the structure of the left and right upper mold exchange units 55L and 55R will be explained. Since the left and right upper mold exchange units 55L and 55R are configured symmetrically, the explanation will be given below by exemplifying the right upper mold exchange unit 55R. FIG. 3 is a front view showing the upper mold exchange unit on the right side.
　上金型交換ユニット５５Ｒは、上部ベースプレート５５０と、上金型保持機構５５１と、上部スライダ５５２と、上部移動機構５５３と、を備えている。 The upper mold exchange unit 55R includes an upper base plate 550, an upper mold holding mechanism 551, an upper slider 552, and an upper moving mechanism 553.
　上部ベースプレート５５０は、上金型４の交換動作を行うための機構が搭載されるための板材であり、矩形状を有している。この機構には、上金型保持機構５５１及び上部移動機構５５３が含まれる。 The upper base plate 550 is a plate material on which a mechanism for exchanging the upper mold 4 is mounted, and has a rectangular shape. This mechanism includes an upper mold holding mechanism 551 and an upper moving mechanism 553.
　上金型保持機構５５１は、上金型４を保持するための上金型保持部材５５１ａと、この上金型保持部材５５１ａを前後方向及び上下方向へ移動する空気圧シリンダなどのアクチェエータと、を含んでいる。 The upper mold holding mechanism 551 includes an upper mold holding member 551a for holding the upper mold 4, and an actuator such as a pneumatic cylinder that moves the upper mold holding member 551a in the front-rear direction and the vertical direction. I'm here.
　上部スライダ５５２は、上部ガイド５７に対して摺動可能に取り付けられる。上金型交換ユニット５５Ｒは、上部スライダ５５２を介して左右方向へ移動することができる。 The upper slider 552 is slidably attached to the upper guide 57. The upper mold exchange unit 55R can be moved in the left-right direction via the upper slider 552.
　上部移動機構５５３は、上金型交換ユニット５５Ｒを左右方向へ移動させる。上部移動機構５５３は、サーボモータ、減速機、上部ガイド５７のラック部材と噛み合うピニオンギアなどを含んでいる。 The upper moving mechanism 553 moves the upper mold exchange unit 55R in the left-right direction. The upper moving mechanism 553 includes a servo motor, a speed reducer, a pinion gear that meshes with the rack member of the upper guide 57, and the like.
　以下、上部ベースプレート５５０の構造について説明する。上部ベースプレート５５０は、上下方向に延びる一組の鉛直縁部５５０ａ、５５０ｂと、左右方向に延びる一組の水平縁部５５０ｃ、５５０ｄと、を含んでいる。４つの縁部５５０ａ、５５０ｂ、５５０ｃ、５５０ｄのうち、右側の鉛直縁部５５０ａ及び下側の水平縁部５５０ｃは、上金型交換ユニット５５Ｒの全体における右下側の外縁を形成している。 The structure of the upper base plate 550 will be described below. The upper base plate 550 includes a pair of vertical edges 550a, 550b extending in the up-down direction and a pair of horizontal edges 550c, 550d extending in the left-right direction. Among the four edges 550a, 550b, 550c, and 550d, the right vertical edge 550a and the lower horizontal edge 550c form the lower right outer edge of the entire upper mold exchange unit 55R.
　小型化の観点から、上金型交換ユニット５５Ｒを構成する各機構は集約してレイアウトされており、上部ベースプレート５５０自体も小型化が図られている。すなわち、右側の鉛直縁部５５０ａは、上部ベースプレート５５０の機能及び強度を満たす範囲で、可能な限り左側の鉛直縁部５５０ｂへと近づくように設計されている。同様に、下側の水平縁部５５０ｃは、上部ベースプレート５５０の機能及び強度を満たす範囲で、可能な限り上側の水平縁部５５０ｄへと近づくように設計されている。 From the viewpoint of miniaturization, the mechanisms constituting the upper mold exchange unit 55R are laid out in a concentrated manner, and the upper base plate 550 itself is also miniaturized. That is, the right vertical edge 550a is designed to be as close to the left vertical edge 550b as possible within the range that satisfies the function and strength of the upper base plate 550. Similarly, the lower horizontal edge 550c is designed to be as close to the upper horizontal edge 550d as possible while still satisfying the functionality and strength of the upper base plate 550.
　右側の鉛直縁部５５０ａの一部には切欠きが設けられ、段差状に形成されている。すなわち、鉛直縁部５５０ａの下側領域５５０ａ１は、鉛直縁部５５０ａの上側領域５５０ａ２よりも左方向にオフセットしている。このため、右側の鉛直縁部５５０ａと下側の水平縁部５５０ｃとが接続するコーナー部も左方向へとオフセットしている。 A notch is provided in a part of the right vertical edge 550a and is formed in a stepped shape. That is, the lower region 550a1 of the vertical edge 550a is offset to the left from the upper region 550a2 of the vertical edge 550a. Therefore, the corner portion where the right vertical edge 550a and the lower horizontal edge 550c connect is also offset to the left.
　このような段差形状により、右側の鉛直縁部５５０ａには、この鉛直縁部５５０ａの一部（下側領域５５０ａ１）が左方向に逃げる逃げ部５５５が設けられることになる。ただし、この逃げ部５５５は、右側の鉛直縁部５５０ａの段差形状に起因する構造と捉えることもできるが、下側の水平縁部５５０ｃの段差形状に起因する構造と捉えることも可能である。すなわち、下側の水平縁部５５０ｃにも、水平縁部５５０ｃの一部（右側領域）が上方向に逃げる逃げ部５５５が設けられることになる。 Due to such a stepped shape, the right vertical edge 550a is provided with an escape portion 555 from which a part of the vertical edge 550a (lower region 550a1) escapes to the left. However, although this relief portion 555 can be considered as a structure resulting from the stepped shape of the right vertical edge 550a, it can also be considered as a structure resulting from the stepped shape of the lower horizontal edge 550c. That is, the lower horizontal edge 550c is also provided with an escape portion 555 through which a part (right side area) of the horizontal edge 550c escapes upward.
　つぎに、左右の下金型交換ユニット５６Ｌ、５６Ｒの構造について説明する。左右の下金型交換ユニット５６Ｌ、５６Ｒは、左右対称に構成されているため、以下、左側の下金型交換ユニット５６Ｌを例示して説明を行う。図４は、左側の下金型交換ユニットを示す正面図である。 Next, the structure of the left and right lower mold exchange units 56L, 56R will be explained. Since the left and right lower mold exchange units 56L and 56R are configured symmetrically, the left lower mold exchange unit 56L will be described below as an example. FIG. 4 is a front view showing the lower mold exchange unit on the left side.
　下金型交換ユニット５６Ｌは、下部ベースプレート５６０と、下金型保持機構５６１と、下部スライダ５６２と、下部移動機構５６３と、を備えている。個々の要素は、上金型交換ユニット５５Ｒにおける上部ベースプレート５５０と、上金型保持機構５５１と、上部スライダ５５２と、上部移動機構５５３と同様である。 The lower mold exchange unit 56L includes a lower base plate 560, a lower mold holding mechanism 561, a lower slider 562, and a lower moving mechanism 563. The individual elements are the same as the upper base plate 550, upper mold holding mechanism 551, upper slider 552, and upper moving mechanism 553 in the upper mold exchange unit 55R.
　つぎに、下部ベースプレート５６０の構造について説明する。下部ベースプレート５６０は、上下方向に延びる一組の鉛直縁部５６０ａ、５６０ｂと、左右方向に延びる一組の水平縁部５６０ｃ、５６０ｄと、を含んでいる。４つの縁部５６０ａ、５６０ｂ、５６０ｃ、５６０ｄのうち、左側の鉛直縁部５６０ａ及び上側の水平縁部５６０ｃは、下金型交換ユニット５６Ｒ全体における左上側の外縁を形成している。 Next, the structure of the lower base plate 560 will be explained. The lower base plate 560 includes a pair of vertical edges 560a, 560b extending in the up-down direction and a pair of horizontal edges 560c, 560d extending in the left-right direction. Among the four edges 560a, 560b, 560c, and 560d, the left vertical edge 560a and the upper horizontal edge 560c form the upper left outer edge of the entire lower mold exchange unit 56R.
　小型化の観点から、下金型交換ユニット５６Ｌを構成する各機構は集約してレイアウトされており、下部ベースプレート５６０自体も小型化が図られている。すなわち、左側の鉛直縁部５６０ａは、下部ベースプレート５６０の機能及び強度を満たす範囲で、可能な限り右側の鉛直縁部５６０ｂへと近づくように設計されている。同様に、上側の水平縁部５６０ｃは、下部ベースプレート５６０の機能及び強度を満たす範囲で、可能な限り下側の水平縁部５６０ｄへと近づくように設計されている。 From the viewpoint of miniaturization, the mechanisms that make up the lower mold exchange unit 56L are laid out in a concentrated manner, and the lower base plate 560 itself is also miniaturized. That is, the left vertical edge 560a is designed to be as close to the right vertical edge 560b as possible within a range that satisfies the function and strength of the lower base plate 560. Similarly, the upper horizontal edge 560c is designed to be as close to the lower horizontal edge 560d as possible while still satisfying the functionality and strength of the lower base plate 560.
　左側の鉛直縁部５６０ａの一部には切欠きが設けられ、段差状に形成されている。すなわち、鉛直縁部５６０ａの上側領域５６０ａ１は、鉛直縁部５６０ａの下側領域５６０ａ２よりも右方向にオフセットしている。このため、左側の鉛直縁部５６０ａと上側の水平縁部５６０ｃとが接続するコーナー部も右方向へとオフセットしている。 A notch is provided in a part of the left vertical edge 560a and is formed in a stepped shape. That is, the upper region 560a1 of the vertical edge 560a is offset to the right from the lower region 560a2 of the vertical edge 560a. Therefore, the corner portion where the left vertical edge 560a and the upper horizontal edge 560c connect is also offset to the right.
　このような段差形状により、左側の鉛直縁部５６０ａには、この鉛直縁部５６０ａの一部（上側領域５６０ａ１）が右方向に逃げる逃げ部５６５が設けられることになる。ただし、この逃げ部５６５は、左側の鉛直縁部５６０ａの段差形状に起因する構造と捉えることもできるが、上側の水平縁部５６０ｃの段差形状に起因する構造と捉えることも可能である。すなわち、上側の水平縁部５６０ｃにも、水平縁部５６０ｃの一部（左側領域）が下方向に逃げる逃げ部５６５が設けられることになる。 Due to this step shape, the left vertical edge 560a is provided with an escape portion 565 from which a part of the vertical edge 560a (upper region 560a1) escapes to the right. However, although this escape portion 565 can be considered as a structure resulting from the step shape of the left vertical edge 560a, it can also be considered as a structure resulting from the step shape of the upper horizontal edge 560c. That is, the upper horizontal edge 560c is also provided with an escape portion 565 through which a part (left side area) of the horizontal edge 560c escapes downward.
　図５は、基準位置で待機する左右の上金型交換ユニット及び左右の下金型交換ユニットを示す説明図である。このような構造の曲げ加工システムでは、上部テーブル１４が下部テーブル１２に向かって下方向に移動してワークＷに対して曲げ加工を行う。曲げ加工を行う場合、左右の上金型交換ユニット５５Ｌ、５５Ｒは、曲げ加工機１の加工範囲よりも右側方に移動して、基準位置で待機する。同様に、左右の下金型交換ユニット５６Ｌ、５６Ｒも、曲げ加工機１の加工範囲よりも右側方に移動して、基準位置で待機する。 FIG. 5 is an explanatory diagram showing the left and right upper mold exchange units and the left and right lower mold exchange units waiting at the reference position. In the bending system having such a structure, the upper table 14 moves downward toward the lower table 12 to bend the workpiece W. When performing bending, the left and right upper mold exchange units 55L, 55R move to the right side of the processing range of the bending machine 1 and wait at a reference position. Similarly, the left and right lower mold exchange units 56L and 56R also move to the right side of the processing range of the bending machine 1 and wait at the reference position.
　左右の上金型交換ユニット５５Ｌ、５５Ｒの基準位置、及び左右の下金型交換ユニット５６Ｌ、５６Ｒの基準位置は、金型収納装置６の前側にそれぞれ設定されている。左右の上金型交換ユニット５５Ｌ、５５Ｒが基準位置にある場合、両者は互いに接近した状態で横並びとなる。同様に、左右の下金型交換ユニット５６Ｌ、５６Ｒが基準位置にある場合、両者は互いに接近した状態で横並びとなる。 The reference positions of the left and right upper mold exchange units 55L, 55R and the reference positions of the left and right lower mold exchange units 56L, 56R are set on the front side of the mold storage device 6, respectively. When the left and right upper mold exchange units 55L and 55R are at the reference position, they are arranged side by side close to each other. Similarly, when the left and right lower mold exchange units 56L, 56R are at the standard position, they are arranged side by side in a state close to each other.
　左右の上金型交換ユニット５５Ｌ、５５Ｒの基準位置、及び左右の下金型交換ユニット５６Ｌ、５６Ｒの基準位置は、左右方向に離隔している。これにより、左右の上金型交換ユニット５５Ｌ、５５Ｒは、左右の下金型交換ユニット５６Ｌ、５６Ｒよりも左側に存在し、逆に、左右の下金型交換ユニット５６Ｌ、５６Ｒは、左右の上金型交換ユニット５５Ｌ、５５Ｒよりも右側に存在する。より具体的には、右側の上金型交換ユニット５５Ｒは、左側の下金型交換ユニット５６Ｌよりも左側に存在し、左側の下金型交換ユニット５６Ｌは、右側の上金型交換ユニット５５Ｒよりも右側に存在する。 The reference positions of the left and right upper mold exchange units 55L, 55R and the reference positions of the left and right lower mold exchange units 56L, 56R are separated in the left-right direction. As a result, the left and right upper mold exchange units 55L, 55R are located on the left side of the left and right lower mold exchange units 56L, 56R, and conversely, the left and right lower mold exchange units 56L, 56R are located on the left and right upper mold exchange units 56L, 56R. It is located on the right side of the mold exchange units 55L and 55R. More specifically, the upper mold exchange unit 55R on the right side is located to the left of the lower mold exchange unit 56L on the left side, and the lower mold exchange unit 56L on the left side is located further to the left than the upper mold exchange unit 55R on the right side. is also on the right.
　それぞれの金型交換ユニット５５Ｌ、５５Ｒ、５６Ｌ、５６Ｒが基準位置にあるとき、右側の上金型交換ユニット５５Ｒの右下側の外縁は、左側の下金型交換ユニット５６Ｌに対して対向する。逆に、左側の下金型交換ユニット５６Ｌの左上側の外縁は、右側の上金型交換ユニット５５Ｒに対して対向する。右側の上金型交換ユニット５５Ｒの右下側の外縁を造形する上部ベースプレート５５０には、左側の下金型交換ユニット５６Ｌから離れる方向（左方向及び上方向）に逃げる逃げ部５５５が存在する。同様に、左側の下金型交換ユニット５６Ｒの左上側の外縁を造形する下部ベースプレート５６０には、右側の上金型交換ユニット５５Ｒから離れる方向（右方向及び下方向）に逃げる逃げ部５６５が存在している。 When the respective mold exchange units 55L, 55R, 56L, and 56R are in the reference position, the lower right outer edge of the upper mold exchange unit 55R on the right side faces the lower mold exchange unit 56L on the left side. Conversely, the upper left outer edge of the left lower mold exchange unit 56L faces the right upper mold exchange unit 55R. The upper base plate 550 that forms the outer edge of the lower right side of the upper mold exchange unit 55R on the right side has a relief part 555 that escapes in the direction away from the lower mold exchange unit 56L on the left side (leftward and upward direction). Similarly, the lower base plate 560 that forms the outer edge of the upper left side of the lower mold exchange unit 56R on the left side has an escape part 565 that escapes in the direction away from the upper mold exchange unit 55R on the right side (rightward and downward direction). are doing.
　このため、上部テーブル１４が下部テーブル１２に対して最も接近した位置に到達した場合でも、右側の上金型交換ユニット５５Ｒと左側の下金型交換ユニット５６Ｌとの間には、上下方向に対して距離Ｓ１及び左右方向に対して距離Ｓ２となる空間的な隔たりが確保される。これにより、右側の上金型交換ユニット５５Ｒと左側の下金型交換ユニット５６Ｌとの干渉を抑制することができる。加えて、右側の上金型交換ユニット５５Ｒと左側の下金型交換ユニット５６Ｌとの間に物体が進入したとしても、この物体に対する右側の上金型交換ユニット５５Ｒと左側の下金型交換ユニット５６Ｌとの干渉を抑制することができるのである。 Therefore, even when the upper table 14 reaches the closest position to the lower table 12, there is a space between the upper mold exchange unit 55R on the right side and the lower mold exchange unit 56L on the left side in the vertical direction. Thus, a spatial separation of distance S1 and distance S2 in the left-right direction is ensured. Thereby, interference between the upper mold exchange unit 55R on the right side and the lower mold exchange unit 56L on the left side can be suppressed. In addition, even if an object enters between the upper mold exchange unit 55R on the right side and the lower mold exchange unit 56L on the left side, the upper mold exchange unit 55R on the right side and the lower mold exchange unit on the left side Therefore, interference with 56L can be suppressed.
　このように、本実施形態の金型交換装置５において、上金型交換部は、左右対称に構成された左右の上金型交換ユニット５５Ｌ、５５Ｒを含み、上金型交換部の逃げ部５５５は、左右の上金型交換ユニット５５Ｌ、５５Ｒにそれぞれ設けられる。また、下金型交換部は、左右対称に構成された左右の下金型交換ユニット５６Ｌ、５６Ｒを含み、下金型交換部の逃げ部５６５は、左右の下金型交換ユニット５６Ｌ、５６Ｒにそれぞれ設けられている。 As described above, in the mold changing device 5 of the present embodiment, the upper mold changing section includes the left and right upper mold changing units 55L and 55R that are configured symmetrically, and the relief part 555 of the upper mold changing section are provided in the left and right upper mold exchange units 55L and 55R, respectively. Further, the lower mold exchange section includes left and right lower mold exchange units 56L and 56R that are configured symmetrically, and the relief part 565 of the lower mold exchange section is connected to the left and right lower mold exchange units 56L and 56R. Each is provided.
　この構成によれば、上述した通り、対向する関係にある上金型交換部と下金型交換部との干渉、ひいては、上金型交換部と下金型交換部との間にある物体との干渉も抑制することができる。 According to this configuration, as described above, interference between the upper mold exchange part and the lower mold exchange part, which are opposed to each other, and objects between the upper mold exchange part and the lower mold exchange part can be prevented. interference can also be suppressed.
　図６は、図５に対して左右を反転させた基準位置で待機する左右の上金型交換ユニット及び左右の下金型交換ユニットを示す説明図である。図６に示すように、左右の上金型交換ユニット５５Ｌ、５５Ｒの基準位置と、左右の下金型交換ユニット５６Ｌ、５６Ｒの基準位置とを左右反転させた状況を想定する。本実施形態の金型交換装置５によれば、基準位置が左右反転した状況であっても、互いに対向する左側の上金型交換ユニット５５Ｌと右側の下金型交換ユニット５６Ｒとの間には、上下方向に対して距離Ｓ１及び左右方向に対して距離Ｓ２となる空間的な隔たりが確保される。これにより、左側の上金型交換ユニット５５Ｌと右側の下金型交換ユニット５６Ｒとの干渉、ひいては、左側の上金型交換ユニット５５Ｌと右側の下金型交換ユニット５６Ｒとの間にある物体との干渉も抑制することができる。このため、必要に応じて、左右の上金型交換ユニット５５Ｌ、５５Ｒの基準位置と、左右の下金型交換ユニット５６Ｌ、５６Ｒの基準位置と左右反転させるといった運用も可能となる。 FIG. 6 is an explanatory diagram showing the left and right upper mold exchange units and the left and right lower mold exchange units waiting at the reference position with the left and right sides reversed with respect to FIG. 5. As shown in FIG. 6, a situation is assumed in which the reference positions of the left and right upper mold exchange units 55L, 55R and the reference positions of the left and right lower mold exchange units 56L, 56R are horizontally reversed. According to the mold changing device 5 of the present embodiment, even if the reference position is horizontally reversed, there is no space between the upper mold changing unit 55L on the left side and the lower mold changing unit 56R on the right side, which face each other. , a spatial separation of a distance S1 in the vertical direction and a distance S2 in the horizontal direction is ensured. This may cause interference between the upper mold exchange unit 55L on the left side and the lower mold exchange unit 56R on the right side, and even an object between the upper mold exchange unit 55L on the left side and the lower mold exchange unit 56R on the right side. interference can also be suppressed. Therefore, if necessary, it is also possible to reverse the reference positions of the left and right upper mold exchange units 55L, 55R and the reference positions of the left and right lower mold exchange units 56L, 56R.
　なお、上金型交換部の逃げ部５５５は、下金型交換部側にある一方の上金型交換ユニット５５Ｌ、５５Ｒにのみ設けられてもよい。同様に、下金型交換部の逃げ部５６５は、上金型交換部側にある一方の下金型交換ユニット５６Ｌ、５６Ｒにのみ設けられてもよい。 Note that the relief portion 555 of the upper mold exchange section may be provided only in one of the upper mold exchange units 55L and 55R on the lower mold exchange section side. Similarly, the relief portion 565 of the lower mold exchange section may be provided only in one of the lower mold exchange units 56L, 56R on the upper mold exchange section side.
　本実施形態において、逃げ部５５５は、上部ベースプレート５５０において上下方向に延びる鉛直縁部５５０ａに設けられ、逃げ部５６５は、下部ベースプレート５６０において上下方向に延びる鉛直縁部５６０ａに設けられている。 In the present embodiment, the relief portion 555 is provided on a vertical edge 550a of the upper base plate 550 that extends in the vertical direction, and the relief portion 565 is provided on a vertical edge 560a of the lower base plate 560 that extends in the vertical direction.
　この構成によれば、左右の上金型交換ユニット５５Ｌ、５５Ｒのなかで、左右の下金型交換ユニット５６Ｌ、５６Ｒと対向する部位に逃げ部５５５を設定することができる。同様に、左右の下金型交換ユニット５６Ｌ、５６Ｒのなかで、左右の上金型交換ユニット５５Ｌ、５５Ｒと対向する部位に逃げ部５６５を設定することができる。これにより、対向する関係にある上金型交換部と下金型交換部との干渉、ひいては、上金型交換部と下金型交換部との間にある物体との干渉も抑制することができる。 According to this configuration, the escape portion 555 can be set in the left and right upper mold exchange units 55L, 55R at a portion facing the left and right lower mold exchange units 56L, 56R. Similarly, relief portions 565 can be set in the left and right lower mold exchange units 56L, 56R at positions facing the left and right upper mold exchange units 55L, 55R. This makes it possible to suppress interference between the upper mold exchange part and the lower mold exchange part, which are in a facing relationship, and furthermore, interference with objects between the upper mold exchange part and the lower mold exchange part. can.
　本実施形態において、曲げ加工機１の右側には、上金型４及び下金型２を収納する金型収納装置６が配置される。上金型交換部は、上金型ホルダ２０と金型収納装置６との間で、上金型４の交換を行う。下金型交換部は、下金型ホルダ１８と金型収納装置６との間で、下金型２の交換を行う。 In this embodiment, a mold storage device 6 that stores the upper mold 4 and the lower mold 2 is arranged on the right side of the bending machine 1. The upper mold exchange section exchanges the upper mold 4 between the upper mold holder 20 and the mold storage device 6. The lower mold exchange section exchanges the lower mold 2 between the lower mold holder 18 and the mold storage device 6.
　そして、上部ガイド５７及び下部ガイド５８は、金型収納装置６の前側までそれぞれ延在しており、基準位置は、金型収納装置６の前側に位置している。 The upper guide 57 and the lower guide 58 each extend to the front side of the mold storage device 6, and the reference position is located at the front side of the mold storage device 6.
　省スペース化の要請により、金型収納装置６の左右方向のサイズも小型化される傾向にある。そのため、基準位置にいるときの上金型交換部と下金型交換部との相対的な距離が近くなる。しかしながら、本実施形態によれば、逃げ部５５５、５６５の存在により、上金型交換部と下金型交換部との干渉、ひいては、上金型交換部と下金型交換部との間にある物体との干渉も抑制することができる。 Due to the demand for space saving, the size of the mold storage device 6 in the left and right direction is also becoming smaller. Therefore, the relative distance between the upper mold exchange part and the lower mold exchange part when they are at the reference position becomes short. However, according to the present embodiment, the presence of the relief parts 555 and 565 causes interference between the upper mold exchange part and the lower mold exchange part, and furthermore, a gap between the upper mold exchange part and the lower mold exchange part. Interference with certain objects can also be suppressed.
　また、本実施形態によれば、左右の上金型交換ユニット５５Ｌ、５５Ｒを構成する各機構は集約してレイアウトされており、左右の上金型交換ユニット５５Ｌ、５５Ｒについても小型化が図られている。左右の上金型交換ユニット５５Ｌ、５５Ｒのサイズが大きい場合、右側の上金型交換ユニット５５Ｒが上部ガイド５７の右端まで移動したとしても、左側の上金型交換ユニット５５Ｌが右側まで寄せきれず、上金型保持部材５５１ａの位置が相対的に左側に存在することになる。このため、上金型交換位置に位置決めされた上金型ストッカ６７において右端にある上金型４よりも、左側の上金型交換ユニット５５Ｌの上金型保持部材５５１ａが左側に位置し、左側の上金型交換ユニット５５Ｌで右端の上金型４を保持することができないということが考えられる。この点、本実施形態に係る左右の上金型交換ユニット５５Ｌ、５５Ｒによれば、ユニット全体が小型化されているので、左側の上金型交換ユニット５５Ｌをより右側まで移動させることができる。これにより、左右いずれの上金型交換ユニット５５Ｌ、５５Ｒであっても右端の上金型４を保持することができる。その結果、上金型交換ユニット５５Ｌ、５５Ｒによる上金型４の配置を効率的に行うことができる。なお、このようなメリットは、左右の下金型交換ユニット５６Ｌ、５６Ｒであって同様である。 Further, according to the present embodiment, the mechanisms configuring the left and right upper mold exchange units 55L and 55R are laid out in a consolidated manner, and the left and right upper mold exchange units 55L and 55R are also miniaturized. ing. If the left and right upper mold exchange units 55L and 55R are large in size, even if the right upper mold exchange unit 55R moves to the right end of the upper guide 57, the left upper mold exchange unit 55L cannot be moved all the way to the right side. , the upper mold holding member 551a is located relatively on the left side. Therefore, in the upper mold stocker 67 positioned at the upper mold exchange position, the upper mold holding member 551a of the left upper mold exchange unit 55L is located to the left of the upper mold 4 at the right end, and It is conceivable that the upper mold exchange unit 55L cannot hold the upper mold 4 at the right end. In this regard, according to the left and right upper mold exchange units 55L and 55R according to the present embodiment, the entire unit is downsized, so the left upper mold exchange unit 55L can be moved further to the right side. Thereby, the upper mold 4 at the right end can be held by either the left or right upper mold exchange unit 55L, 55R. As a result, the upper mold 4 can be efficiently arranged by the upper mold exchange units 55L and 55R. Note that such merits are the same for the left and right lower mold exchange units 56L and 56R.
　上記のように、本実施形態を記載したが、この開示の一部をなす論述及び図面はこの実施形態を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかとなろう。 Although the present embodiment has been described as above, it should not be understood that the statements and drawings that form part of this disclosure limit this embodiment. Various alternative embodiments, implementations, and operational techniques will be apparent to those skilled in the art from this disclosure.
　本願の開示は、２０２２年９月１２日に日本国特許庁に出願された特願２０２２－１４４５７７号に記載の主題と関連しており、それらの全ての開示内容は引用によりここに援用される。 The disclosure of this application is related to the subject matter described in Japanese Patent Application No. 2022-144577 filed with the Japan Patent Office on September 12, 2022, the entire disclosure content of which is incorporated herein by reference. .

Claims (6)

  1. 　曲げ加工機の上部テーブルに固定され、前記上部テーブルに設けられた上金型ホルダに沿って左右方向に延在する上部ガイドと、
    　前記上部ガイドに案内されて前記左右方向に移動し、前記上金型ホルダに対して上金型を配置する上金型交換部と、
    　前記曲げ加工機の下部テーブルに固定され、前記下部テーブルに設けられた下金型ホルダに沿って前記左右方向に延在する下部ガイドと、
    　前記下部ガイドに案内されて前記左右方向に移動し、前記下金型ホルダに対して下金型を配置する下金型交換部と、を備え、
    　前記上部テーブルが前記下部テーブルに対して相対的に接近してワークに対して曲げ加工を行う場合、前記上金型交換部及び前記下金型交換部は、前記曲げ加工機の加工範囲よりも前記左右方向の一方側に移動して、互いに前記左右方向に離隔したそれぞれの基準位置で待機し、
    　前記上金型交換部及び前記下金型交換部は、前記基準位置にあるときに互いに対向する部位に、相手から離れる方向に逃げる逃げ部を有する
    　金型交換装置。     an upper guide fixed to an upper table of the bending machine and extending in the left-right direction along an upper mold holder provided on the upper table;
    an upper mold exchange part that moves in the left and right direction guided by the upper guide and arranges the upper mold with respect to the upper mold holder;
    a lower guide fixed to a lower table of the bending machine and extending in the left-right direction along a lower mold holder provided on the lower table;
    a lower mold exchange part that moves in the left and right direction guided by the lower guide and arranges the lower mold with respect to the lower mold holder;
    When bending a workpiece while the upper table is relatively close to the lower table, the upper mold exchange section and the lower mold exchange section are located within a processing range of the bending machine. moving to one side in the left-right direction and waiting at respective reference positions spaced apart from each other in the left-right direction;
    The upper mold exchanging part and the lower mold exchanging part have escape parts that escape in a direction away from the other party at parts that face each other when in the reference position.
  2. 　前記上金型交換部は、互いに独立して動作する左右の上金型交換ユニットを含み、
    　前記上金型交換部の前記逃げ部は、前記下金型交換部側に位置する一方の上金型交換ユニットに設けられ、
    　前記下金型交換部は、互いに独立して動作する左右の下金型交換ユニットを含み、
    　前記下金型交換部の前記逃げ部は、前記上金型交換部側に位置する一方の下金型交換ユニットに設けられている
    　請求項１記載の金型交換装置。     The upper mold exchange unit includes left and right upper mold exchange units that operate independently of each other,
    The relief part of the upper mold exchange part is provided in one upper mold exchange unit located on the lower mold exchange part side,
    The lower mold exchange unit includes left and right lower mold exchange units that operate independently of each other,
    The mold changing device according to claim 1, wherein the relief part of the lower mold changing section is provided in one of the lower mold changing units located on the side of the upper mold changing section.
  3. 　前記上金型交換部は、左右対称に構成された左右の上金型交換ユニットを含み、
    　前記上金型交換部の前記逃げ部は、前記左右の上金型交換ユニットにそれぞれ設けられ、
    　前記下金型交換部は、左右対称に構成された左右の下金型交換ユニットを含み、
    　前記下金型交換部の前記逃げ部は、前記左右の下金型交換ユニットにそれぞれ設けられている
    　請求項１記載の金型交換装置。     The upper mold exchange unit includes left and right upper mold exchange units configured symmetrically,
    The relief portion of the upper mold exchange part is provided in each of the left and right upper mold exchange units,
    The lower mold exchange unit includes left and right lower mold exchange units configured symmetrically,
    The mold changing device according to claim 1, wherein the relief portion of the lower mold changing section is provided in each of the left and right lower mold changing units.
  4. 　前記左右の上金型交換ユニットのそれぞれは、前記上金型の交換動作を行うための機構が搭載される矩形状の上部ベースプレートを有し、
    　前記左右の上金型交換ユニットにそれぞれ設けられる前記逃げ部は、前記上部ベースプレートにおいて上下方向に延びる鉛直縁部に設けられ、
    　前記左右の下金型交換ユニットのそれぞれは、前記下金型の交換動作を行うための機構が搭載される矩形状の下部ベースプレートを有し、
    　前記左右の下金型交換ユニットにそれぞれ設けられる前記逃げ部は、前記下部ベースプレートにおいて上下方向に延びる鉛直縁部に設けられる
    　請求項２又は３記載の金型交換装置。     Each of the left and right upper mold exchange units has a rectangular upper base plate on which a mechanism for exchanging the upper mold is mounted,
    The escape portions provided in the left and right upper mold exchange units are provided at vertical edges extending in the up-down direction in the upper base plate,
    Each of the left and right lower mold exchange units has a rectangular lower base plate on which a mechanism for exchanging the lower mold is mounted,
    The mold changing device according to claim 2 or 3, wherein the escape portions provided in the left and right lower mold changing units are provided at vertical edges extending in the vertical direction of the lower base plate.
  5. 　前記曲げ加工機の前記左右方向の一方側には、前記上金型及び前記下金型を収納する金型収納装置が配置され、
    　前記上金型交換部は、前記上金型ホルダと前記金型収納装置との間で、前記上金型の交換を行い、
    　前記下金型交換部は、前記下金型ホルダと前記金型収納装置との間で、前記下金型の交換を行う
    　請求項１記載の金型交換装置。     A mold storage device that stores the upper mold and the lower mold is disposed on one side of the bending machine in the left-right direction,
    The upper mold exchange unit exchanges the upper mold between the upper mold holder and the mold storage device,
    The mold exchanging device according to claim 1, wherein the lower mold exchanging unit exchanges the lower mold between the lower mold holder and the mold storage device.
  6. 　前記上部ガイド及び前記下部ガイドは、前記金型収納装置の前側までそれぞれ延在しており、
    　前記基準位置は、前記金型収納装置の前側に位置する
    　請求項５記載の金型交換装置。     The upper guide and the lower guide each extend to the front side of the mold storage device,
    The mold changing device according to claim 5, wherein the reference position is located on the front side of the mold storage device.
PCT/JP2023/031444 2022-09-12 2023-08-30 Mold replacing device WO2024057928A1 (en)

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JP2022-144577 2022-09-12
JP2022144577A JP7462001B2 (en) 2022-09-12 2022-09-12 Die change device

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WO2024057928A1 true WO2024057928A1 (en) 2024-03-21

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000071028A (en) * 1998-08-28 2000-03-07 Amada Co Ltd Die and die exchange device
WO2016063579A1 (en) * 2014-10-24 2016-04-28 株式会社アマダホールディングス Replacement method for attaching and detaching mold for press brake and mold accommodating device
JP2019122972A (en) * 2018-01-15 2019-07-25 株式会社アマダホールディングス Metal mold presence/absence detection method and press brake
WO2020017540A1 (en) * 2018-07-17 2020-01-23 株式会社アマダホールディングス Upper die stocker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000071028A (en) * 1998-08-28 2000-03-07 Amada Co Ltd Die and die exchange device
WO2016063579A1 (en) * 2014-10-24 2016-04-28 株式会社アマダホールディングス Replacement method for attaching and detaching mold for press brake and mold accommodating device
JP2019122972A (en) * 2018-01-15 2019-07-25 株式会社アマダホールディングス Metal mold presence/absence detection method and press brake
WO2020017540A1 (en) * 2018-07-17 2020-01-23 株式会社アマダホールディングス Upper die stocker

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