WO2024080174A1 - 金型収納装置及び金型反転装置 - Google Patents
金型収納装置及び金型反転装置 Download PDFInfo
- Publication number
- WO2024080174A1 WO2024080174A1 PCT/JP2023/035823 JP2023035823W WO2024080174A1 WO 2024080174 A1 WO2024080174 A1 WO 2024080174A1 JP 2023035823 W JP2023035823 W JP 2023035823W WO 2024080174 A1 WO2024080174 A1 WO 2024080174A1
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- WIPO (PCT)
- Prior art keywords
- mold
- stocker
- shelf
- mounting
- die
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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
- 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
- B21D5/0209—Tools therefor
- B21D5/0254—Tool exchanging
-
- 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
- B21D37/14—Particular arrangements for handling and holding in place complete dies
- B21D37/145—Die storage magazines
Definitions
- the present invention relates to a mold storage device and a mold inversion device.
- Patent Document 1 describes a manufacturing device 100 that includes a press brake 101, a die storage device 102 arranged in front of the press brake 101, and a die changing robot 103 arranged between the press brake 101 and the die storage device 102.
- the molds 104 used in the press brake 101 are mounted on a tool holder (fixed shelf) 105 that is configured in three stages in the vertical direction (Z direction in the figure) and extends in the left-right direction (X direction in the figure), and are then stored in the mold storage device 102.
- the mold exchange robot 103 removes the necessary mold 104 from the tool holder 105 of the mold storage device 102, moves the mold 104 in the front-rear direction (Y direction in the figure), and attaches it to the mold mounting section 106 of the press brake 101.
- Patent Document 2 describes a die inversion device 200 that includes a swivel actuator 202, a pair of cylinders 203, a housing 201 that houses the cylinder pipes and the like, and a die holder 204 attached to the tip of the swivel actuator 202, as shown in FIG. 12.
- One aspect of the present invention is a mold storage device that can ensure the maximum number of molds to be mounted in a simple structure and small space.
- Another aspect of the present invention is a mold reversing device that has a simple structure and can prevent misalignment of the mold mounting position and shorten the tact time required for the reversing process.
- the mold storage device comprises a first stocker capable of mounting multiple molds used in bending along a first direction, and at least one second stocker capable of mounting the multiple molds along the first direction and arranged in parallel to the first stocker in a second direction perpendicular to the first direction, and the second stocker is configured to be movable in a third direction perpendicular to the first direction and the second direction.
- the second stocker is arranged in parallel with the first stocker in a second direction perpendicular to the first direction, and can move in a third direction perpendicular to the first and second directions, respectively.
- a mold reversal device includes a mold mounting section capable of mounting a mold used in bending processing, and a rotation mechanism that rotates the mold mounting section in a direction intersecting the mounting direction of the mold, the mold mounting section being formed with a U-shaped cross section that constitutes a pair of walls and a bottom, a mounting section main body into which the shank section of the mold is inserted, a locking groove section provided on the inner wall surface of at least one of the pair of walls that extends in the intersecting direction and is capable of engaging with a protrusion that protrudes from the surface of the shank section, and a plurality of locking pieces that are provided at predetermined positions within the locking groove section and engage with the protrusion from the intersecting direction.
- the protrusions protruding from the surface of the shank of the mold not only engage with the locking grooves in the mounting body of the mold mounting section, but also engage with a plurality of locking pieces provided at predetermined positions within the locking grooves from a direction intersecting the mounting direction, making it possible to prevent misalignment of the mounting position of the mold with a simple structure.
- the inversion process can be performed simply by mounting the mold on the mold mounting section and rotating it with the rotation mechanism, the tact time required for the inversion process can be shortened.
- the present invention it is possible to ensure the maximum number of molds to be mounted with a simple structure and a small space. Furthermore, according to another aspect of the present invention, it is possible to prevent misalignment of the mounting position of the mold with a simple structure and to shorten the tact time required for the reversal process.
- FIG. 1 is a schematic perspective view showing a bending system having a die housing device according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing a mold storage device according to one embodiment.
- FIG. 3 is a perspective cross-sectional view showing a mold containing device according to one embodiment.
- FIG. 4 is a schematic diagram for explaining a retracted state of the movable shelf in the mold storage device according to one embodiment.
- 11 is a schematic diagram for explaining the operation of the mold storing device according to the embodiment.
- FIG. 11 is a schematic diagram for explaining the operation of the mold storing device according to the embodiment.
- FIG. 11 is a schematic diagram for explaining the operation of the mold storing device according to the embodiment.
- FIG. 11 is a schematic diagram for explaining the operation of the mold storing device according to the embodiment.
- FIG. 2 is a perspective view showing a mold inversion device according to one embodiment.
- FIG. 7A is a diagram for explaining the inversion operation of the mold inversion device according to one embodiment.
- FIG. 7B is a diagram for explaining the inversion operation of the mold inversion device according to one embodiment.
- FIG. 8 is a schematic cross-sectional view of the mold inversion apparatus of FIG. 7A in place.
- FIG. 9 is a perspective view showing a state in which a mold is mounted on a mold inversion device according to one embodiment.
- FIG. 10 is a schematic cross-sectional view of the mold inversion device of FIG. 9 in a predetermined position.
- FIG. 1 is a schematic diagram showing a manufacturing apparatus having a conventional mold housing device.
- FIG. 1 is a schematic diagram showing a conventional mold inversion device.
- FIG. 1 is a schematic perspective view showing a bending system having a die housing device according to an embodiment of the present invention.
- a bending system 1 according to one embodiment generally includes a press brake 2, a die exchange robot 3, and a die storage device 10. Note that since the basic structures of the press brake 2 and the die exchange robot 3 are known, only an outline will be described.
- the arrow "X direction” in the figure means, for example, the left-right direction of the die storage device 10 in FIG. 1
- the arrow “Y direction” in the figure means the front-rear direction of the die storage device 10
- the arrow “Z direction” in the figure means the up-down direction of the die storage device 10.
- engagement means, for example, that object A and object B engage with each other
- locking means, for example, that object A and object B engage with each other and stop.
- the press brake 2 and the die storage device 10 are arranged side by side in the left-right direction with their front sides facing the die exchange robot 3.
- the press brake 2 bends the workpiece (not shown), which is the material to be processed, using a bending tool 9 (not shown in FIG. 1) consisting of a punch and a die attached to each of the upper and lower tables 2a and 2b between the upper and lower tables 2a and 2b.
- a bending tool 9 (not shown in FIG. 1) consisting of a punch and a die attached to each of the upper and lower tables 2a and 2b between the upper and lower tables 2a and 2b.
- the die exchange robot 3 exchanges the die 9 between the press brake 2 and the die storage device 10 using an arm unit 3a that can rotate 360° on the robot pedestal 3f.
- the arm unit 3a can be configured as an articulated arm with, for example, six control axes.
- the die exchange robot 3 is movable left and right on the front side of the press brake 2 and the die storage device 10 by a movement mechanism 3b that includes a rail unit 3e laid on the floor surface, a robot pedestal 3f that can move along the rail unit 3e, and a cable bear (registered trademark) 3c connected to the robot pedestal 3f and arranged on the front side of the die storage device 10.
- the Mold storage device 10 On the front side of the mold storage device 10, for example, there are arranged the Cablebear (registered trademark) 3c of the above-mentioned moving mechanism 3b, a storage section 3d for a tool gripper (not shown) for gripping a mold attached to the tip of the arm section 3a of the mold changing robot 3, and a mold reversing device 20 provided at a position closer to the press brake 2 side than the storage section 3d.
- the storage section 3d and the mold reversing device 20 are provided on a front pedestal section 19 located on the front side of the mold storage device 10, for example.
- the bending system 1 can be configured to include a control device (not shown, same below) that controls the press brake 2 as well as the die storage device 10 including the die changing robot 3 and the die reversal device 20, and is configured to be able to realize automatic machining of the workpiece, including die changing of the press brake 2 and the die storage device 10.
- a control device not shown, same below
- FIG. 2 is a perspective view showing a mold storage device according to one embodiment.
- Fig. 3 is a perspective cross-sectional view showing a mold storage device according to one embodiment. Note that in Fig. 2 and Fig. 3, the storage section 3d, the mold inversion device 20, and the front pedestal section 19 shown in Fig. 1 are omitted.
- the mold 9 shown in the figure is a gooseneck type, but is not limited to this.
- the mold storage device 10 includes a fixed shelf (first stocker) 11 capable of mounting multiple molds 9 (gooseneck molds in the illustrated example) used for bending along the left-right direction (first direction (X direction)), and at least one movable shelf (second stocker) 12 capable of mounting multiple molds 9 along the left-right direction (first direction) and arranged in parallel with the fixed shelf (first stocker) 11 in a front-rear direction (second direction (Y direction)) perpendicular to the left-right direction (first direction).
- the movable shelf (second stocker) 12 is configured to be movable in an up-down direction (third direction (Z direction)) perpendicular to the left-right direction (first direction) and the front-rear direction (second direction).
- the mold storage device 10 is provided with, for example, one fixed shelf 11 and two movable shelves 12 (first movable shelf 12A, second movable shelf 12B). These fixed shelves (first stocker) 11 and movable shelves (second stocker) 12 are provided in multiple tiers (e.g., three tiers each) in the vertical direction (third direction).
- the fixed shelves (first stocker) 11 and movable shelves (second stocker) 12 are provided in the order of the fixed shelf (first stocker) 11 in a fixed state and the movable shelf (second stocker) 12 which is movable, from the far side in the front-rear direction (second direction) with respect to the mold exchange robot 3 arranged on one side (e.g., the front side) in the front-rear direction (second direction) of the mold storage device 10.
- the mold storage device 10 has a frame section 13 that forms a housing with a pair of left and right side frames 13a, 13a and a top frame 13b that connects them at the top.
- a front closing plate 14a that closes the lower part of the front side is provided on the front side of the frame section 13.
- a rear closing plate 14b (see FIG. 3, for example) that closes the lower part of the rear side is provided on the rear side of the frame section 13.
- the rear closing plate 14b may be provided so as to close the entire rear side.
- Above the front closing plate 14a of the mold storage device 10 is an opening 15.
- the fixed shelves 11 are fixed, for example, at a position above the frame section 13 so that the mold exchange robot 3 can access them from the opening 15 using the arm section 3a. Therefore, the fixed shelves 11 are fixed in a state in which all three tiers are exposed at the innermost part from the opening 15 in the front-to-rear direction.
- the fixed shelves 11 are arranged in the order of first shelf 11a, second shelf 11b, and third shelf 11c from bottom to top in the vertical direction.
- both left and right ends of the first shelf 11a, the second shelf 11b, and the third shelf 11c are attached and fixed to a pair of left and right mounting posts 13c, 13c (only one side is shown, the same applies below) that extend in the vertical direction and are provided on the inside of each side frame 13a, 13a.
- the vertical spacing between each shelf 11a to 11c is set to be sufficient so that the mold 9 does not interfere with other shelves when it is moved vertically by the arm portion 3a of the mold exchange robot 3 to be attached and removed.
- the movable shelf 12 is movably arranged so that it can move up and down from the rear side of the front blocking plate 14a to the opening 15.
- the movable shelf 12 is movably arranged so that it can be in a state in which all three tiers are exposed from the opening 15 to the front side of the fixed shelf 11 in the front-to-rear direction, and in a retracted state in which only the upper tier is exposed behind the front blocking plate 14a in the front-to-rear direction.
- the first movable shelf 12A is provided in front of the fixed shelf 11, and the second movable shelf 12B is provided further forward of the first movable shelf 12A.
- the first movable shelf 12A is provided in the order of the fourth shelf 12a, the fifth shelf 12b, and the sixth shelf 12c from bottom to top in the vertical direction.
- both ends of the fourth shelf 12a, the fifth shelf 12b, and the sixth shelf 12c in the left-right direction are fixed to a pair of guide posts 17a, 17a (only one side is shown, same below).
- the vertical spacing between each of the shelves 12a to 12c is set to a sufficient distance, similar to the fixed shelf 11 described above.
- a lifting mechanism 16a (only one side shown, same below) is attached to the upper end of each guide post 17a.
- the lifting mechanism 16a and guide post 17a move the fourth to sixth shelves 12a to 12c up and down along a pair of left and right guide rails 18a (only one side shown, same below) that extend up and down and are provided on the inside of each side frame 13a.
- the lifting mechanism 16a can be any mechanism such as an air cylinder, rack and pinion, or motor.
- the second movable shelf 12B is provided with the seventh shelf 12d, the eighth shelf 12e, and the ninth shelf 12f in this order from bottom to top in the vertical direction.
- both ends in the left-right direction of the seventh shelf 12d, the eighth shelf 12e, and the ninth shelf 12f are respectively attached and fixed to a pair of left and right guide posts 17b, 17b (only one side is shown, same below).
- the vertical spacing of each shelf 12d to 12f is set to a sufficient spacing, similar to the fixed shelf 11 described above.
- a lifting mechanism 16b (only one side shown, same below) is attached to the upper end of each guide post 17b. These lifting mechanisms 16b and guide posts 17b move the seventh to ninth shelves 12d to 12f up and down along a pair of left and right guide rails 18b (only one side shown, same below) that extend up and down and are provided on the inside of each side frame 13a.
- the lifting mechanisms 16b can be any mechanism, such as an air cylinder, a rack and pinion, or a motor.
- Each of the lifting mechanisms 16a, 16b described above includes a control unit (not shown) that controls the lifting and lowering operation. Therefore, the movable shelf 12 (first movable shelf 12A, second movable shelf 12B) is configured to be moved upward or downward together with the guide posts 17a, 17b by the control of the control units of the lifting mechanisms 16a, 16b based on a control signal from a shelf control unit (not shown) included in the control device, for example.
- the movable shelf (second stocker) 12 moves to a position in the front-to-rear direction (second direction) so as not to overlap with the fixed shelf (first stocker) 11, based on the fixed position of the fixed shelf (first stocker) 11. Therefore, even if the movable shelf 12 moves to a retracted state in which only the upper level is exposed as described above, it does not impede the mold exchange robot 3 from accessing the lower first shelf 11a of the fixed shelf 11.
- FIG. 4 is a schematic diagram for explaining a retracted state of the movable shelf in the mold storage device according to one embodiment. 4, when the mold changing robot 3 performs mold changing on the fixed shelf (first stocker) 11, the movable shelf (second stocker) 12 of the mold storing device 10 moves to retreat to a non-movable area UM of the arm unit 3a of the mold changing robot 3.
- the lower side of the mold storing device 10 becomes an area (non-movable area UM) that cannot be accessed because the Cableveyor (registered trademark) 3c and the front pedestal 19 are arranged thereon.
- this non-movable area UM would be wasted space that the mold changing robot 3 cannot access. For this reason, by adopting a structure that moves the movable shelf 12 to this area, it is possible to access both the fixed shelf 11 and the movable shelf 12 through the opening 15.
- the mold changing robot 3 can access the fixed shelf 11 at the innermost part of the mold storage device 10 to change molds, and can also move the movable shelf 12 up and down to retreat to the non-movable area UM and expose it through the opening 15 to access the movable shelf 12 to change molds. Therefore, compared to when only the fixed shelf 11 is used, it is possible to secure a greater number of molds 9 to be mounted by utilizing the space in the front-to-back direction without expanding the space in the left-to-right direction.
- the movable area M and the non-movable area UM can be configured, for example, as a spherical space or a part thereof that the arm unit 3a can reach, based on the center of rotation of the arm unit 3a for 360° rotation on the robot base 3f of the mold exchange robot 3.
- the non-movable area UM is not limited to being formed on the lower side of the mold storage device 10 as described above, but may be formed on the upper side. If the non-movable area UM is formed on the upper side, the movable shelf 12 can be moved so as to retreat above the fixed shelf 11.
- FIG. 5A is a schematic diagram for explaining the operation of the mold storage device according to one embodiment.
- Fig. 5B is a schematic diagram for explaining the operation of the mold storage device according to one embodiment.
- Fig. 5C is a schematic diagram for explaining the operation of the mold storage device according to one embodiment. Note that Fig. 5A shows a case where the movable shelf 12 is in a retracted state, Fig. 5B shows a case where the first movable shelf 12A is raised, and Fig. 5C shows a case where the second movable shelf 12B is raised. Also, in Figs. 5A to 5C, the rear closing plate 14b is assumed to close the entire rear side of the mold storage device 10.
- the mold storage device 10 When the mold storage device 10 is to be in a state where the fixed shelf 11 can be accessed, for example, it operates as shown in FIG. 5A. That is, the movable shelf 12 (first movable shelf 12A, second movable shelf 12B) moves down to a lower retracted position (retracted state) so that the first to third shelves 11a to 11c of the fixed shelf 11 are exposed in the front-to-rear direction from the opening 15.
- the mold changing robot 3 is able to perform mold changing on the first to third shelves 11a to 11c of the fixed shelf 11. Note that in the retracted state, for example, if the ninth shelf 12f of the second movable shelf 12B is exposed from the opening 15 above the front blocking plate 14a, it is also possible to perform mold changing including on the ninth shelf 12f.
- the mold storage device 10 also operates as shown in FIG. 5B when, for example, the first movable shelf 12A of the movable shelf 12 is made accessible. That is, the first movable shelf 12A rises within the guide rail 18a together with the lifting mechanism 16a and guide pillar 17a, and moves from the retracted position to a raised position in front of the fixed shelf 11 so that the fourth to sixth shelves 12a to 12c of the first movable shelf 12A are exposed in the front-to-rear direction from the opening 15.
- the mold changing robot 3 can perform mold changing on the fourth to sixth shelves 12a to 12c of the first movable shelf 12A. Even in this case, for example, if the ninth shelf 12f of the second movable shelf 12B is exposed as described above, mold changing can also be performed on the ninth shelf 12f.
- the mold storage device 10 when the mold storage device 10 is to make the second movable shelf 12B of the movable shelf 12 accessible, for example, it operates as shown in FIG. 5C. That is, the second movable shelf 12B rises within the guide rail 18b together with the lifting mechanism 16b and the guide pillar 17b, and moves from the retracted position to a raised position in front of the fixed shelf 11 so that the seventh to ninth shelves 12d to 12f of the second movable shelf 12B are exposed in the front-rear direction from the opening 15.
- the mold changing robot 3 can perform mold changing on the seventh to ninth shelves 12d to 12f of the second movable shelf 12B.
- FIG. 5C shows a state in which the first movable shelf 12A is stopped in the retracted position, if the second movable shelf 12B moves to a raised position from the state shown in FIG. 5B, the first movable shelf 12A may also move to a raised position.
- the movable shelf 12 arranged in parallel to the fixed shelf 11 in the front-rear direction is configured to be able to move up and down as needed with simple structures such as the lifting mechanisms 16a, 16b, the guide posts 17a, 17b, and the guide rails 18a, 18b.
- the dies 9 mounted on the fixed shelf 11 and movable shelf 12 of the die storage device 10 are, for example, mounted with either the front or back facing the opening 15, if they have a fixed front or back. Therefore, when actually mounting the dies 9 on at least one of the upper table 2a and lower table 2b of the press brake 2, it is necessary to flip the front and back of the dies 9 using the die reversal device 20 before picking them up using the die exchange robot 3.
- the die reversal device 20 will be described below.
- FIG. 6 is a perspective view showing a mold inversion device according to one embodiment.
- Fig. 7A is a view for explaining the inversion operation of the mold inversion device according to one embodiment.
- Fig. 7B is a view for explaining the inversion operation of the mold inversion device according to one embodiment.
- Fig. 8 is a schematic cross-sectional view of a predetermined position of the mold inversion device of Fig. 7A.
- Fig. 9 is a perspective view showing a state in which a mold is mounted on the mold inversion device according to one embodiment.
- Fig. 10 is a schematic cross-sectional view of a predetermined position of the mold inversion device of Fig. 9.
- the die reversal device 20 is disposed at the end of the front base 19 provided above the front blocking plate 14a of the die storage device 10, for example, on the press brake 2 side.
- the position of the die reversal device 20 is not limited to this, and it may be disposed above the die storage device 10 with the device turned upside down, or on the side of the die storage device 10 with the device turned upside down by 90°.
- the die inversion device 20 includes a die mounting section 21 capable of mounting the die 9 used in bending, and a rotation mechanism 29 that rotates the die mounting section 21 in a direction (left-right direction (X direction) and front-back direction (Y direction)) that intersects with the mounting direction of the die 9 (up-down direction (Z direction)).
- the rotation mechanism 29 rotates as shown by the arrow in the figure in a horizontal plane parallel to the intersecting direction, with the rotating section 25 rotating as shown by the arrow in the figure, and can be configured with a known so-called rotary cylinder (rotary actuator) for rotation, etc., so a detailed description will be omitted here.
- the mold mounting section 21 of the mold reversal device 20 includes a mounting section main body 22 having a U-shaped cross section that is composed of a pair of walls 22a, 22a and a bottom 22b, into which the shank portion 9a of the mold 9 (see Figures 7A and 7B) is inserted, a locking groove portion 22d that is provided on the inner wall surface 22c of at least one of the pair of walls 22a, 22a and extends in an intersecting direction (for example, the left-right direction (X direction), the same applies below) and is capable of engaging with a drop prevention member (protrusion) 9d (see Figure 8) that protrudes from the surface of the shank portion 9a, and a plurality of locking pieces 23 that are provided at predetermined positions within the locking groove portion 22d and engage with the drop prevention member (protrusion) 9d from an intersecting direction.
- a drop prevention member (protrusion) 9d see Figure 8
- a plurality of locking pieces 23 that are provided at predetermined positions within the locking groove portion
- the locking grooves 22d are provided on the inner wall surfaces 22c near the upper ends of the pair of walls 22a, 22a.
- the multiple locking pieces 23 are provided, for example, near the center in the intersecting direction of the locking grooves 22d.
- the multiple locking pieces 23 are provided, for example, near the ends in the intersecting direction of the locking grooves 22d.
- a total of eight locking pieces 23 are provided, one set near the center of each of the walls 22a, 22a and one set near each end.
- the locking pieces 23 are fastened near the center and near the end of the locking groove portion 22d by mounting bolts 28 attached from the outer wall surface 22e of the walls 22a, 22a.
- the surfaces 23a of the multiple locking pieces 23 facing the center of the locking groove 22d in the intersecting direction form a tapered surface that gradually widens from the center from the groove bottom 22f to the groove opening 22g toward the other wall 22a of the pair of walls 22a, 22a.
- the mounting body 22 of the mold mounting part 21, which has a U-shaped cross section has a urethane sheet (friction imparting means) 24 provided on the surface of the bottom 22b.
- the urethane sheet 24 is fastened integrally to the bottom 22b by mounting bolts 24a attached to the bottom 22b from above.
- the die 9 mounted on the die mounting section 21 is an existing die of a narrow type (straight sword type in the illustrated example).
- This die 9 includes, for example, a shank portion 9a, a mold portion 9b, and a processing portion 9c.
- the shank portion 9a is provided with a button portion 9e that links with a fall prevention member 9d, an insertion hole 9f that penetrates the front and back of the die 9, and a stopper insertion hole 9g formed on the front and back opposite the button portion 9e.
- a stopper (not shown) of the anti-fall-out member 9d is attached to the back of the stopper insertion hole 9g.
- the anti-fall-out member 9d and the button portion 9e have a known structure and will not be described in detail, but under normal circumstances they are biased to protrude from the surface of the shank portion 9a by a biasing means such as a spring (not shown).
- a die gripping means such as a known tool gripper (described later) is inserted into the insertion hole 9f.
- the mold 9A mounted on the mold mounting section 21 is an existing mold (straight sword type in the illustrated example) that is wider than the mold 9.
- This mold 9A is similar to the mold 9 in that it includes a shank portion 9a, a mold portion 9b, and a processing portion 9c, but differs from the mold 9 in that anti-fall-off members 9d are provided on both ends of the shank portion 9a in the width direction, and that the anti-fall-off members 9d on both ends are linked to the button portion 9e by a connecting plate 9h so that they can be linked together.
- a connecting plate 9h so that they can be linked together.
- the mold 9, 9A is gripped by the mold gripping means by clamping the surface of the shank portion 9a and the button portion 9e from both sides with the hook-shaped protrusion (not shown) and the hook tip (not shown) of the mold gripping means inserted into the insertion hole 9f, so that the anti-fall-out member 9d is retracted toward the inside of the shank portion 9a together with the button portion 9e, and is gripped by the mold gripping means.
- the anti-fall-out member 9d is retracted in this manner, and can be released from engagement with the locking groove portion 22d.
- the die inversion device 20 of this embodiment inverts the die 9, 9A upside down as necessary, for example, when the die changing robot 3 attaches the die 9, 9A removed from the die storage device 10 to the press brake 2, or when the die 9, 9A removed from the press brake 2 is returned to the die storage device 10.
- the mold 9 is held by the mold holding means attached to the tip of the arm 3a of the mold exchange robot 3 so that the arm 3a side is the surface, and then the shank 9a is inserted into the center of the mold mounting section 21 of the mold inversion device 20 and mounted thereon, as shown in FIG. 7A.
- the surface 23a of each of the multiple locking pieces 23 in the locking groove 22d comes into point contact or line contact with both corners on the tip side of the side of the fall-off prevention member 9d within the locking groove 22d. Then, after the mold 9 is mounted, the mold gripping means is separated.
- the mold mounting section 21 is rotated, for example, 180° together with the rotating section 25 by the rotation mechanism 29 as shown by the arrow in the figure. This causes the mold 9 to be turned over while still mounted on the mold mounting section 21, as shown in FIG. 7B. Once the mold 9 has been turned over, the mold gripping means is again brought close to grip the mold 9, and the mold 9 is removed from the mold mounting section 21.
- the die 9A is attached to and detached from the die mounting section 21 by the die gripping means in the same manner as above, but when the die 9A is mounted on the die mounting section 21, it will be as shown in Figure 10. That is, the surface 23a of each of the multiple locking pieces 23 of the locking groove 22d, for example, located near the end, and one corner of the side tip side of the anti-dropping member 9d facing these surfaces 23a, in addition to the contact between the locking pieces 23 and the anti-dropping member 9d near the center, make point contact or line contact within the locking groove 22d.
- the mold inversion device 20 of this embodiment can restrict the vertical movement of the mold 9, 9A mounted on the mold mounting part 21 by engaging the locking groove 22d of the mounting part main body 22 of the mold mounting part 21 with the fall prevention member 9d of the mold 9, 9A.
- the contact between the multiple locking pieces 23 in the locking groove 22d and the fall prevention member 9d presses one surface (e.g., the back surface) of the shank part 9a against the other wall part 22a, so that it is possible to prevent positional deviation in the front-rear direction and to suppress the lateral (intersecting) swing of the mold 9, 9A due to the inertial force of rotation, for example, during inversion.
- the urethane sheet 24 provided on the bottom part 22b is configured to be frictionable with the end part of the shank part 9a on the bottom part 22b side when, for example, the fall prevention member 9d in the center of the mold 9, 9A is used as a swing fulcrum, so that it is possible to suppress the swing in the left-right direction.
- the mold inversion device 20 can completely eliminate the risk of the molds 9, 9A mounted on the mold mounting section 21 becoming misaligned in any direction, including left/right, front/back, and up/down. Furthermore, the mold inversion device 20 can be simply configured using the mold mounting section 21 and the rotation mechanism 29, so it has a simple structure, a small number of parts, and is possible to keep costs down. At the same time, because the only operation of the device is the rotation of the rotation section 25, the tact time required for the inversion process of the molds 9, 9A can be shortened.
- the fixed shelf 11 of the mold storage device 10 is described as being configured with one row and three tiers in the vertical direction, the first shelf 11a to the third shelf 11c, but this is not limited to this.
- the fixed shelf 11 may be configured with multiple rows, for example, one row and one tier at the upper position on the front side in the front-to-back direction, and one row and two tiers at the lower position on the rear side, as long as it is within the movable area M of the mold exchange robot 3 and is located further back in the front-to-back direction than the movable shelf 12.
- the number of rows of the movable shelves 12 is not limited to the two rows of the first movable shelf 12A and the second movable shelf 12B described above, but may be a single row configuration or a configuration with more rows.
- the number of tiers of the fixed shelves 11 and the movable shelves 12 is not limited to the three tier configuration described above, but may be a configuration with various numbers of tiers.
- each locking piece 23 of the mold inversion device 20 is described as being a tapered surface, but this is not limited to this. If the clearance accuracy of the fall-off prevention member 9d at the mounting position of the mold 9, 9A in the mold mounting section 21 is high, the surface 23a of each locking piece 23 does not need to be a tapered surface.
- a urethane sheet 24 provided on the bottom 22b of the mounting body 22 as a friction providing means
- the friction providing means is not limited to this, and various configurations can be used, such as paint with a high friction coefficient or a sealing material.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Description
また、本発明の他の態様は、簡易な構造で金型の搭載位置の位置ズレを防止し反転処理に掛かるタクトタイムを短縮することができる金型反転装置である。
また、本発明の他の態様によれば、簡易な構造で金型の搭載位置の位置ズレを防止し反転処理に掛かるタクトタイムを短縮することができる。
図1は、本発明の一実施形態に係る金型収納装置を有する曲げ加工システムを示す概略斜視図である。
図1に示すように、一実施形態に係る曲げ加工システム1は、概略的には、プレスブレーキ2と、金型交換ロボット3と、金型収納装置10と、を備える。なお、プレスブレーキ2及び金型交換ロボット3の基本的な構造については既知であるので、概略のみを説明する。
図2は、一実施形態に係る金型収納装置を示す斜視図である。図3は、一実施形態に係る金型収納装置を示す斜視断面図である。なお、図2及び図3においては、図1で示した格納部3d、金型反転装置20及び前方台座部19の図示は省略している。また、図示の金型9はグースネック型となっているが、これに限定されるものではない。
図4に示すように、金型収納装置10の可動棚(第2ストッカ)12は、金型交換ロボット3が固定棚(第1ストッカ)11において金型交換を行う際に、金型交換ロボット3のアーム部3aの非可動領域UMに退避するよう移動する。すなわち、左右方向から見て、例えば金型交換ロボット3がアーム部3aを動かしてアクセスすることができる領域を可動領域Mとした場合、金型収納装置10の下部側は、ケーブルベア(登録商標)3c及び前方台座部19が配置されているためアクセスすることができない領域(非可動領域UM)となる。
図5Aは、一実施形態に係る金型収納装置の動作を説明するための概略図である。図5Bは、一実施形態に係る金型収納装置の動作を説明するための概略図である。図5Cは、一実施形態に係る金型収納装置の動作を説明するための概略図である。なお、図5Aは、可動棚12が退避状態にある場合を示し、図5Bは、第1可動棚12Aが上昇した場合を示し、図5Cは、第2可動棚12Bが上昇した場合を示している。また、図5A~図5Cにおいて、後方閉塞板14bは金型収納装置10の後方側の全面を閉塞していることとする。
このように、本実施形態の金型収納装置10は、前後方向において固定棚11に並設された可動棚12が、昇降機構16a,16b、ガイド支柱17a,17b及び案内レール18a,18b等の簡易な構造で必要に応じて適宜上下に移動可能に構成される。これにより、金型収納装置10の左右方向にスペースを拡張することなく前後方向のスペースを利用して固定棚11及び可動棚12に搭載する金型9の金型搭載数を最大限確保することが可能となる。
図6は、一実施形態に係る金型反転装置を示す斜視図である。図7Aは、一実施形態に係る金型反転装置の反転動作を説明するための図である。図7Bは、一実施形態に係る金型反転装置の反転動作を説明するための図である。図8は、図7Aの金型反転装置の所定位置の横断面の概略図である。図9は、一実施形態に係る金型反転装置に金型を搭載した状態を示す斜視図である。図10は、図9の金型反転装置の所定位置の横断面の概略図である。
本実施形態の金型反転装置20は、金型交換ロボット3が、例えば金型収納装置10から取り外してきた金型9,9Aをプレスブレーキ2に装着する際、又はプレスブレーキ2から取り外してきた金型9,9Aを金型収納装置10に戻す際に、必要に応じて金型9,9Aの表裏を反転させるものである。
本実施形態の金型反転装置20は、上述したように、金型搭載部21の搭載部本体22の係止溝部22dと金型9,9Aの脱落防止部材9dとが係合することにより、金型搭載部21に搭載された金型9,9Aの上下方向の移動を規制することができる。また、係止溝部22d内の複数の係止片23と脱落防止部材9dとが接触することにより、シャンク部9aの一方の面(例えば、背面)が他方の壁部22aに押し付けられるため、前後方向の位置ズレを防止することができると共に、例えば反転時等の回転の慣性力による金型9,9Aの横方向(交差する方向)の揺動を抑制することができる。更に、底部22b上に設けられたウレタンシート24が、例えば金型9,9Aの中央の脱落防止部材9dを揺動支点としたときの左右方向へのぶれが生じた場合に、シャンク部9aの底部22b側の端部と摩擦可能に構成されているので、左右方向の揺動を抑制することができる。
以上、本発明の好適な実施形態について説明したが、本発明の技術的範囲は、一実施形態に記載の範囲には限定されない。上述した実施形態には、多様な変更又は改良を加えることが可能である。
2 プレスブレーキ
3 金型交換ロボット
9,9A 金型
10 金型収納装置
11 固定棚(第1ストッカ)
11a 第1棚
11b 第2棚
11c 第3棚
12 可動棚(第2ストッカ)
12a 第4棚
12b 第5棚
12c 第6棚
12d 第7棚
12e 第8棚
12f 第9棚
12A 第1可動棚
12B 第2可動棚
20 金型反転装置
21 金型搭載部
22 搭載部本体
22d 係止溝部
23 係止片
29 回転機構
Claims (10)
- 曲げ加工に用いられる複数の金型を第1方向に沿って搭載可能な第1ストッカと、
前記複数の金型を前記第1方向に沿って搭載可能であると共に、前記第1ストッカに対して前記第1方向と直交する第2方向に並設された少なくとも一つの第2ストッカと、
を備え、
前記第2ストッカは、前記第1方向及び前記第2方向とそれぞれ直交する第3方向に移動可能に構成されている
金型収納装置。 - 前記第1ストッカ及び前記第2ストッカは、前記第3方向に複数段設けられている
請求項1に記載の金型収納装置。 - 前記第1ストッカ及び前記第2ストッカは、前記金型収納装置の前記第2方向の一方側に配置された金型交換ロボットに対して、前記第2方向の遠い側から固定状態の前記第1ストッカ及び移動可能な前記第2ストッカの順に設けられている
請求項1又は2に記載の金型収納装置。 - 前記第2ストッカは、前記金型交換ロボットが前記第1ストッカにおいて金型交換を行う際に、前記金型交換ロボットのアーム部の非可動領域に退避するよう移動する
請求項3に記載の金型収納装置。 - 前記第2ストッカは、前記第1ストッカの固定位置を基準として、前記第2方向において前記第1ストッカに重ならない位置に移動する
請求項4に記載の金型収納装置。 - 曲げ加工に用いられる金型を搭載可能な金型搭載部と、
前記金型搭載部を前記金型の搭載方向と交差する方向に沿って回転させる回転機構と、
を備え、
前記金型搭載部は、
一対の壁部及び底部を構成する断面コの字状に形成され、前記金型のシャンク部が挿入される搭載部本体と、
前記一対の壁部のうちの少なくとも一つの内壁面に、前記交差する方向に延びて前記シャンク部の表面から突出する突起部に係合可能に設けられた係止溝部と、
前記係止溝部内の所定位置に設けられ前記突起部に対し前記交差する方向から係合する複数の係止片と、を含む
金型反転装置。 - 前記搭載部本体は、前記底部の表面に設けられた摩擦付与手段を更に有する
請求項6に記載の金型反転装置。 - 前記複数の係止片は、前記交差する方向における前記係止溝部の中央に向く面が、前記一対の壁部のうちの他方の壁部に向かって溝底部から溝開口部にかけて前記中央から徐々に拡がるテーパ面を構成する
請求項6又は7に記載の金型反転装置。 - 前記複数の係止片は、前記係止溝部の前記交差する方向における中央近傍に設けられている
請求項8に記載の金型反転装置。 - 前記複数の係止片は、前記係止溝部の前記交差する方向における端部近傍に設けられている
請求項9に記載の金型反転装置。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23877179.4A EP4603203A4 (en) | 2022-10-14 | 2023-10-02 | MOLD STORAGE DEVICE AND MOLD TURNING DEVICE |
| US19/110,244 US20260091423A1 (en) | 2022-10-14 | 2023-10-02 | Tool storage device and tool reversing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022165816A JP7472229B1 (ja) | 2022-10-14 | 2022-10-14 | 金型収納装置 |
| JP2022165817A JP7543362B2 (ja) | 2022-10-14 | 2022-10-14 | 金型反転装置 |
| JP2022-165817 | 2022-10-14 | ||
| JP2022-165816 | 2022-10-14 |
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| WO2024080174A1 true WO2024080174A1 (ja) | 2024-04-18 |
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| PCT/JP2023/035823 Ceased WO2024080174A1 (ja) | 2022-10-14 | 2023-10-02 | 金型収納装置及び金型反転装置 |
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| Country | Link |
|---|---|
| US (1) | US20260091423A1 (ja) |
| EP (1) | EP4603203A4 (ja) |
| WO (1) | WO2024080174A1 (ja) |
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| CN120363406A (zh) * | 2025-05-12 | 2025-07-25 | 台州市黄岩永茂模具有限公司 | 一种带有嵌件的u形弯管注塑模具 |
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| CN120363406A (zh) * | 2025-05-12 | 2025-07-25 | 台州市黄岩永茂模具有限公司 | 一种带有嵌件的u形弯管注塑模具 |
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| Publication number | Publication date |
|---|---|
| EP4603203A1 (en) | 2025-08-20 |
| EP4603203A4 (en) | 2026-04-08 |
| US20260091423A1 (en) | 2026-04-02 |
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