JP6618576B1 - Method of mounting split upper die on upper die holder provided on upper table in press brake, die changing device, and die stocker - Google Patents

Abstract

A method of mounting a split upper die to a press brake, a die changing device, and a die stocker are provided. Kind Code: A1 A mounting method in which a split upper die 17 is mounted by using a die changing device 20 on an upper die holder 15 which is disposed at an appropriate distance in the left-right direction below an upper table 11 in a press brake 1. In this method, a round bar-shaped finger 53 provided on the mold exchanging device 20 is engaged with a circular engagement hole 51 provided at a central portion in the width direction of the divided upper mold 17. The divided upper mold 17 is temporarily positioned in the gap between the upper mold holder 15 to be mounted and the adjacent upper mold holder 15. The temporarily positioned divided upper die 17 is moved in the left-right direction and is mounted on the upper die holder 15 to be mounted. [Selection diagram] FIG.

Description

  The present invention relates to mounting of a split upper mold in which a split upper mold is mounted using a mold exchanging device to a plurality of upper mold holders provided at appropriate intervals in the left-right direction at the lower part of an upper table in a press brake. The present invention relates to a method, a mold exchanging apparatus used in the method, and a mold stocker used in the method. More specifically, after the upper part of the upper table of the press brake is inserted into the gap between the upper mold holders provided adjacent in the left-right direction, the divided upper mold is inserted and temporarily positioned by a mold changer, The present invention relates to a method of moving a divided upper mold in the left-right direction and mounting the divided upper mold on an upper mold holder, a mold exchanging apparatus, and a mold stocker.

  An upper mold holder for supporting the divided upper mold in a detachable and replaceable manner is provided at the lower part of the upper table in the press brake (for example, see Patent Documents 1, 2, and 3).

Japanese Patent No. 4672868 JP2013-86149A JP, 2015-120185, A

  Patent Document 1 describes a configuration in which an upper die is attached to and detached from an upper die mounting portion (upper die holder) provided at a lower portion of an upper table using a die exchanging device.

  Patent Documents 2 and 3 describe a configuration in which a plurality of upper mold holders (upper mold mounting portions) are provided at appropriate intervals in the left-right direction below the upper table.

  In the configuration described in Patent Document 2, the mounting portion provided on the upper part of the upper die is rotated by operating the pressing actuator provided on the main body of the upper die holder so as to close the lower side of the upper die clamp. Is pressed and fixed to the upper mold support provided in the main body. The configuration described in the cited document 3 is a clamp corresponding to the upper mold clamp described in the cited document 2 (cited document 3) by rotating a lever provided at the center in the left and right direction of the upper mold holder in the left and right direction. In this configuration, the upper die is fixed and opened by opening and closing.

  By the way, as described in Patent Documents 2 and 3, in the configuration in which the upper mold holder is appropriately separated in the left and right direction at the lower part of the upper table, the upper mold is attached to and detached from the upper mold holder manually. Has been done. Accordingly, even in a configuration in which a plurality of upper mold holders are appropriately separated in the left-right direction at the lower part of the upper table, it is desirable to replace and replace each upper mold holder using a mold exchanging device. ing.

  Here, when the die replacement method described in Patent Document 1 is applied to the press brake described in Patent Documents 2 and 3, the upper mold and the mold mounting portion (die holder) described in Patent Document 1 are used. The configuration is configured on the assumption that a mold exchanging apparatus is used. Therefore, it cannot be applied to a configuration based on the premise that the mold is manually exchanged as in the configurations described in Patent Documents 2 and 3.

  That is, the upper mold mounting part (mold mounting part) provided in the lower part of the upper table described in Patent Document 1 is provided over the entire length corresponding to the width dimension in the left-right direction of the upper table. The upper mold mounting part is provided with a mounting groove over the entire length in the left-right direction. And by being the structure which attaches and detaches a split mold up and down with an automatic mold changer (ATC), the upper mold mounting part and the split mold are configured so that the split mold does not fall inadvertently. is there.

  In other words, the configuration assumes that the ATC is used.

  Therefore, the configuration described in Patent Document 1 cannot be applied to the press brakes described in Patent Documents 2 and 3.

  The present invention has been made in view of the above-described problems. A mold exchanging apparatus is provided for a plurality of upper mold holders provided at the lower portion of the upper table in the press brake with appropriate intervals in the left-right direction. It is an object of the present invention to provide a method for mounting and using a split upper die, a die changer used for the method, and a die stocker.

Therefore, the present invention provides a split upper mold in which a split upper mold is mounted using a mold exchanging device to an upper mold holder that is arranged at an appropriate interval in the left-right direction at the lower part of the upper table in the press brake. A mounting method,
(A) The upper part of the split upper mold supported by the mold stocker is engaged with the locking hole provided in the central portion in the left-right direction so that the rod-like fingers provided in the mold changer are locked, Removing one mold at a time,
(B) a step of temporarily positioning the removed divided upper mold by a mold exchanging device in a gap between the upper mold holder to be mounted and the adjacent upper mold holder;
(C) The divided upper mold is moved between the upper mold support provided in the upper mold holder to be mounted and the upper mold clamp provided in the upper mold holder by moving the temporarily positioned divided upper mold in the left-right direction. Temporarily positioning the mounting portion provided for,
(D) a step of removing the fingers from the temporarily positioned positioning holes of the divided upper mold,
(E) a step of fixing the mounting portion in the divided upper mold temporarily positioned to the upper mold holder;
Each process is provided.

In addition, the present invention provides a split upper mold in which a split upper mold is mounted using a mold exchanging device on an upper mold holder that is disposed at an appropriate interval in the left-right direction at the lower portion of the upper table in the press brake. A mounting method, wherein (a) a bar-like finger provided in a mold exchanging device is locked in a locking hole provided in a central portion in the left-right direction of a divided upper mold supported by a mold stocker, A step of removing each of the divided upper molds from the mold stocker; (b) moving the mold exchanging device in the left-right direction, and attaching the removed split upper mold to the upper mold holder closest to the stocker. A step of passing between the upper mold support portion and the upper mold clamp in the left-right direction; (c) mounting between the upper mold support portion provided on the upper mold holder to which the divided upper mold is to be mounted and the upper mold clamp; Temporarily positioning the mounting portion of the power split upper mold, (d A step of detaching the finger from the locking hole of the divided upper mold temporarily positioned, and a step of fixing the attachment portion of the divided upper mold temporarily positioning (e), the upper holder.

Further, the present invention is provided with a plurality of upper mold holders at appropriate intervals in the left-right direction at the lower portion of the upper table in the press brake, and a plurality of divided upper molds on one side in the left-right direction of the upper table. A split upper mold mounting method comprising: a mold stocker that is detachably supported, and mounting the split upper mold supported by the mold stocker to an upper mold holder, comprising : (a) the rear table from the rear side of the upper table; A mold exchanging apparatus that is movable in the left-right direction over the rear side of the mold stocker, wherein a bar-like finger provided in the mold exchanging apparatus is provided in a split upper mold supported by the mold stocker. A step of locking in the blind hole, (b) a step of moving the divided upper die holding the finger in the left-right direction and moving it to the position of the notch formed in the mold stocker, and (c) a mold stocker. Moved upward and inserted finger A step of removing the divided upper mold relatively downward from the mold stocker; (d) an upper table provided with an attaching portion of the divided upper mold held by fingers by moving the mold exchanging device in the horizontal direction; A step of temporarily positioning between the upper mold support portion and the upper mold clamp in the mold holder; (e) a step of removing the fingers from the temporarily positioned locking holes of the divided upper mold; and (f) temporarily. the mounting of the positioning the divided upper mold, and a step of fixing the upper holder.

Further, the present invention is provided with a plurality of upper mold holders at appropriate intervals in the left-right direction at the lower portion of the upper table in the press brake, and a plurality of divided upper molds on one side in the left-right direction of the upper table. A split upper mold mounting method comprising: a mold stocker that is detachably supported, and mounting the split upper mold supported by the mold stocker to an upper mold holder, comprising : (a) the rear table from the rear side of the upper table; A mold exchanging device that is movable in the left-right direction over the rear side of the mold stocker, wherein the rod-shaped fingers provided in the mold exchanging device are moved in the left-right direction in the divided upper mold supported by the mold stocker. A step of locking in a locking hole provided in the central portion, (b) a step of moving the divided upper mold holding the fingers in the left-right direction and moving to the position of the notch formed in the mold stocker; c) Split upper mold with fingers locked Removing the rear upper portion from the notch, and (d) moving the divided upper die removed rearward in the left-right direction, in the gap between the upper die holder to be attached and the adjacent upper die holder (E) by moving the divided upper mold temporarily positioned in the gap in the left-right direction to support the upper mold holder for the upper mold holder to be mounted. A step of temporarily positioning between the upper part clamp and the upper mold clamp and removing the finger from the locking hole of the divided upper mold; (f) attaching the temporarily positioned divided upper mold mounting part to the upper mold holder; step of fixing, and a.

Further, the mold exchanging apparatus according to the present invention removes a position corresponding to a plurality of upper mold holders arranged at appropriate intervals in the left-right direction and a plurality of divided upper molds at the lower part of the upper table in the press brake. A rod-like finger that has a movable member that can reciprocate between positions corresponding to the mold stocker that can be supported, and that can be locked in a locking hole in the front-rear direction provided in the center in the left-right direction of the split upper mold. Is provided in the moving member. This mold exchanging apparatus can be used in the above-described split upper mold mounting method.

In addition, a mold stocker according to the present invention includes a stocker body that supports a split upper mold so as to be movable in the left-right direction, and a notch portion for removing the split molds one by one in a downward direction or a front-back direction. Is provided in the stocker body. This mold stocker can be used in the above-described split upper mold mounting method.

  According to the present invention, the split upper mold is temporarily positioned by the die changer in the gap adjacent to the upper mold holder to which the split upper mold is to be mounted, and the split upper mold is moved in the left-right direction and mounted. Attach the split upper mold to the power upper holder. Therefore, the split upper mold can be quickly mounted on the upper mold holder.

It is front explanatory drawing which shows the relationship between the press brake and die storage apparatus which concern on embodiment of this invention. Since the press brake is symmetrical, the left side is omitted. It is operation | movement explanatory drawing at the time of exchanging and exchanging an upper metal mold with respect to a metal mold attaching part by ATC. It is a perspective explanatory view showing the state where the upper mold is held by ATC. It is operation | movement explanatory drawing at the time of exchanging and exchanging an upper metal mold with respect to a metal mold attaching part by ATC. It is explanatory drawing which shows the relationship between the finger and upper metal mold | die in ATC. It is operation | movement explanatory drawing of the lock piece with which the finger was equipped. It is operation | movement explanatory drawing in the case of mounting | wearing the upper mold | type holder with the division | segmentation upper mold | type supported by the stocker main body. It is operation | movement explanatory drawing in the case of mounting | wearing the upper mold | type holder with the division | segmentation upper mold | type supported by the stocker main body. It is operation | movement explanatory drawing in the case of mounting | wearing the upper mold | type holder with the division | segmentation upper mold | type supported by the stocker main body which concerns on 2nd Embodiment. It is operation | movement explanatory drawing in the case of mounting | wearing the upper mold | type holder with the division | segmentation upper mold | type supported by the stocker main body. It is operation | movement explanatory drawing in the case of mounting | wearing the upper mold | type holder with the division | segmentation upper mold | type supported by the stocker main body. It is operation | movement explanatory drawing in the case of mounting | wearing the upper mold | type holder with the division | segmentation upper mold | type supported by the stocker main body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, in order to facilitate understanding, the relationship between a press brake and a mold storage device that stores a mold to be replaced will be schematically described.

  The configuration of the press brake is well known. Therefore, schematically, as shown in FIG. 1, the press brake 1 has C-shaped left and right side frames 3L and 3R (the left-side side frame 3L is not shown since it has a left-right symmetric configuration). ). And the lower table 5 is integrally attached to the front lower part of the side frames 3L and 3R. On the upper part of the lower table 5, a lower mold mounting portion 9 for mounting the divided lower mold 7 so as to be detachable and replaceable is provided.

  An upper table 11 that is vertically opposed to the lower table 5 is provided on the upper front side of the side frames 3L and 3R so as to be movable up and down. In order to move the upper table 11 up and down, left and right vertical actuators 13L and 13R (reference numeral 13L omitted) such as fluid pressure cylinders and servo motors are provided above the side frames 3L and 3R. Yes.

  A plurality of upper holders 15 are provided at the lower part of the upper table 11 so as to be appropriately spaced apart in the left-right direction (X-axis direction). The upper mold holder 15 has a function of holding the divided upper mold 17 in a detachable and replaceable manner. In addition, the structure of the upper mold | type holder 15 is the same structure as the structure of the upper mold | type holder described in the said patent document 2, and is well-known. Therefore, description of the details of the upper mold holder 15 is omitted.

  With the above configuration, the plate-like workpiece W is placed and positioned on the divided lower mold 7 mounted on the lower table 5, and the upper table 11 is lowered to cooperate with the divided lower mold 7 and the divided upper mold 17. The workpiece W is bent.

  A mold storage device 19 that stores a divided lower mold 7 that is attached to and detached from the lower mold mounting portion 9 and a divided upper mold 17 that is attached to and detached from the upper mold holder 15 is provided in the left-right direction of the press brake 1. Provided close to the side. A lower mold exchanging device (not shown in FIG. 1) for exchanging and replacing the divided lower mold 7 between the press brake 1 and the mold storage device 19 and an exchanging and exchanging of the divided upper mold 17 are performed. The upper die changer (automatic die changer: ATC) 20 (see FIG. 2) is provided.

  More specifically, in order to attach and detach the divided upper die 17 with respect to the upper die holder 15, a guide that is long in the left-right direction (X-axis direction) is provided on the rear side (right side in FIG. 2) of the upper table 11. Rails 21 are provided.

  That is, a plurality of girder members 23 projecting rearward (rightward in FIG. 2) are provided below the upper table 11 and in the X-axis direction (left-right direction) of the appropriate upper mold holder 15. It has been. And the beam member 25 extended in the left-right direction (X-axis direction) is provided horizontally in the front-end | tip part (rear end part) of this girder member 23. FIG. A rack 27 that is long in the X-axis direction is provided on the lower surface of the beam member 25. The rack 27 is provided with the guide rail 21 in the X-axis direction.

  A box-shaped first slider 31 as a moving member is movably supported on the guide rail 21 via a linear slider 29. In order to move and position the first slider 31 in the X-axis direction, the first slider 31 is provided with a servo motor 33. A pinion gear 35 (see FIG. 3, the rack 27 and the guide rail 21 are not shown in FIG. 3) rotated by the servo motor 33 meshes with the rack 27. Therefore, the first slider 31 is reciprocally moved and positioned in the X-axis direction by the rotation of the servo motor 33.

  The guide rail 21, the beam member 25, and the rack 27 extend long in the mold storage device 19. Therefore, the slider 31 can reciprocate in the X-axis direction from the rear side of the press brake 1 into the mold storage device 19.

  A base plate 37 (see FIG. 3) is integrally provided vertically on one side surface of the first slider 31 in the X-axis direction. A second slider 41 is supported on the Y-axis direction guide member 39 provided in the base plate 37 so as to be movable in the Y-axis direction. In order to move the second slider 41 in the Y-axis direction, the second slider 41 is provided with a reciprocating device 43.

  Various configurations can be adopted as the reciprocating device 43. However, in this embodiment, the reciprocating device 43 is exemplified by a fluid pressure cylinder. The tip 43E of the piston rod 43P provided in the fluid pressure cylinder 43 so as to be able to reciprocate is connected to the bracket 37A provided integrally with the base plate 37 (the connection structure is not shown). Therefore, by driving the fluid pressure cylinder 43, the second slider 41 can be reciprocated in the Y-axis direction with respect to the base plate 37.

  The second slider 41 is provided with a third slider 45 that can reciprocate in the Y-axis direction via a guide member (not shown) in the Y-axis direction. In order to reciprocate the third slider 45, a piston rod 47 </ b> P provided in the fluid pressure cylinder 47 as a reciprocating device attached to the second slider 41 so as to freely reciprocate is provided in the third slider 45. The protrusion 45P is connected. Accordingly, the third slider 45 is reciprocated in the Y-axis direction by the operation of the fluid pressure cylinder 47.

  A support block 49 is integrally provided on the front side of the third slider 45 in the front-rear direction (Y-axis direction). The support block 49 has a rod-shaped finger that can be inserted (locked) into a through-hole 51 in the front-rear direction as an example of a locking hole provided in a central portion of the upper mold 17 in the left-right direction (X-axis direction). 53 protrudes forward (leftward in FIGS. 2 and 3).

  The upper mold 17 is illustrated as a gooseneck mold 17G in FIGS. The thick portion 17A (see FIG. 2) of the gooseneck mold 17G is formed to have a large thickness in the front-rear direction compared to the thick portion 17A of a general upper mold 17 (see FIG. 4). Therefore, the through hole (locking hole) 51 communicates the large diameter hole 51A and the small diameter hole 51B as shown in FIG. A step 51C is formed at the connecting portion between the large diameter hole 51A and the small diameter hole 51B.

  In order to support the gooseneck mold 17G so that the gooseneck mold 17G does not fall when inserted into the through hole 51 of the gooseneck mold 17G, the finger 53 can be projected and retracted at the distal end side of the finger 53. A lock piece (locking piece) 55 is provided.

  That is, the finger 53 is formed in a round bar shape in this embodiment. The finger 53 includes a small-diameter portion 53A on the distal end side that can be inserted into the through hole 51 and a large-diameter portion 53B on the proximal end portion side. A stepped portion 53C is formed between the small diameter portion 53A and the large diameter portion 53B. When the small-diameter portion 53A is inserted into the through hole 51 in the upper mold 17, the stepped portion 53C has front and rear surfaces 17F (finger 53 through the through hole 51 from the front side) in the thick portion 17A. When inserted, it is in contact with the front surface, and when inserted from the rear side, it is in contact with the rear surface).

  More specifically, a slit 57 in the longitudinal direction is formed on the tip side of the finger 53 as shown in FIG. And in this slit 57, the said lock piece 55 is rotatably provided through the pivot 59 of the direction orthogonal to the longitudinal direction of the finger 53 vertically. The slit 57 is provided with a stopper 61 that limits the immersion of the lock piece 55 with respect to the outer peripheral surface of the finger 53. In order to perform the operation of protruding and retracting the lock piece 55 with respect to the outer peripheral surface of the finger 53, the finger 53 is provided with an operation rod 63 that is movable in the longitudinal direction (Y-axis direction, front-rear direction). .

  As shown in FIGS. 6 (a) and 6 (b), the tip of the operation rod 63 is provided with a notch 63A. The notch 63 </ b> A is formed with a pushing surface 63 </ b> B for performing a pressing and turning operation so that the lock piece 55 is immersed in the outer peripheral surface of the finger 53. Further, a pulling surface 63 </ b> C for rotating the lock piece 55 so as to project and operate with respect to the outer peripheral surface of the finger 53 is formed in the notch 63 </ b> A so as to face the push surface 63 </ b> B. Therefore, the lock piece 55 can be moved in and out of the outer peripheral surface of the finger 53 by reciprocating the operation rod 63 in the longitudinal direction.

  As shown in FIG. 5, a slide block 65 is provided on the outer periphery of the large-diameter portion 53 </ b> B of the finger 53 as a longitudinally moving member that is movable in the longitudinal direction of the finger 53. The slide block 65 has the same function although the forms shown in FIGS. The slide block 65 is provided with a pin-shaped detent member 69 that engages with a detent portion 67 provided in the upper molds 17 and 17G and prevents the upper molds 17 and 17G from derotating.

  That is, when the small diameter portion 53A of the finger 53 is inserted into the through hole 51 in the upper mold 17 (17G), the stepped portion 53C of the finger 53 comes into contact with the front surface 17F or the rear surface 17F of the upper mold 17 (17G). . And the locking piece 55 etc. with which the front end side of 53 A of small diameter parts was equipped protrudes outside from the said through hole 51. FIG. Therefore, the lock piece 55 projects from the outer peripheral surface of the finger 53, and the front surface 17F or the rear surface 17F of the upper mold 17 (17G) can be locked. Then, the anti-rotation member 67 provided on the ATC 20 is engaged with the anti-rotation portion 67 provided on the rear surface or the front surface on the opposite side of the surface locked by the lock piece 55, and the upper metal with the finger 53 as the center is engaged. The mold 17 (17G) can be prevented from rotating.

  The anti-rotation member 69 acts to press the molds 17 and 17G toward the lock piece 55 when the lock piece 55 is projected from the outer peripheral surface of the finger 53. Further, the anti-rotation member 69 functions to sandwich the divided upper molds 17 and 17G between the lock piece 55 and the lock piece 55.

  In order to reciprocate the slide block 65 along the finger 53, a fluid pressure cylinder 71 is attached to the third slider 45, as shown in FIG. The piston rod 71P provided to the fluid pressure cylinder 71 so as to be able to reciprocate is connected to a connecting member 75 attached to a base end portion of a slide rod 73 slidably supported by the support block 49. The slide block 65 is provided on the distal end side of the slide rod 73.

  Therefore, the slide block 65 is reciprocated with respect to the finger 53 by reciprocating the fluid pressure cylinder 71. Then, the anti-rotation member 69 provided in the slide block 65 is disengaged from the anti-rotation portion 67 provided in the molds 17 and 17G.

  In order to reciprocate the operation rod 63 in the longitudinal direction, a fluid pressure cylinder 77 is attached to the third slider 45. The operation rod 63 is connected to a piston rod 77P provided to the fluid pressure cylinder 77 so as to freely reciprocate.

  Therefore, the operation rod 63 can be reciprocated in the Y-axis direction (front-rear direction) by reciprocating the fluid pressure cylinder 77. Therefore, as described above, the lock piece 55 can appear and disappear with respect to the outer peripheral surface of the finger 53.

  As can be understood from the above description, the small-diameter portion 53A of the finger 53 provided in the ATC 20 can be inserted (locked) into the through hole 51 as the locking hole provided in the upper molds 17 and 17G. . As shown in FIG. 6, the front and rear surfaces 17F of the upper molds 17 and 17G are provided with a concave anti-rotation portion 67 that engages with the anti-rotation member 69 provided in the ATC 20 to prevent rotation. Yes.

  Therefore, the fingers 53 can be inserted (locked) from the front side or the rear side with respect to the through holes 51 in the upper molds 17 and 17G. Then, the step portion 53C of the finger 53 abuts on the front and rear surfaces 17F, and the front die 17F or the rear surface 17F of the upper mold 17, 17G is locked by the lock piece 55 provided so as to be able to protrude and retract with respect to the outer peripheral surface of the finger 53. can do. Further, a rotation preventing member 67 provided on the ATC 20 is engaged with a rotation preventing portion 67 provided on the rear surface or the front surface on the opposite side of the surface locked by the lock piece 55 so that the upper molds 17 and 17G are rotated. Stop can be done.

  That is, the small mold part 53B of the finger 53 provided in the ATC 20 is inserted from the front side or the rear side into the through hole 51 in the front-rear direction provided in the upper mold 17, 17G, and the upper mold 17, 17G is not dropped. Can be conveyed. In other words, the upper mold 17G can be attached to and detached from the upper mold holder 15 provided in the upper table 11 of the press brake by the ATC 20.

  By the way, when the upper molds 17 and 17G are gooseneck molds 17G as shown in FIGS. 2 and 3, when the finger 53 is inserted from the small diameter hole 51B side of the through hole 51, FIG. As shown in FIG. 5, the step portion 51 </ b> C in the through hole 51 serves as a locking surface for locking the lock piece 55. Then, when the finger 53 is inserted from the large-diameter hole 51A side, the outer surface 17F (see FIG. 6) having the outer end edge in the small-diameter hole 51B becomes a locking surface for locking the lock piece 55.

  That is, when the finger 53 is inserted into the through hole 51 from the front side or the rear side of the upper mold 17G, the anti-rotation member 69 provided in the slide block 65 is attached to both the front and rear sides of the gooseneck mold 17G. It is possible to engage with the rotation stopper 67 provided in the above. Therefore, even in the case of the gooseneck mold 17G, it can be attached and detached using the ATC 20 without rotating.

  As already understood, in the case of the gooseneck mold 17G, as shown in FIG. 6, the stepped portion 51C of the through hole 51 is provided between the large diameter hole 51A and the small diameter hole 51B. Therefore, even when the thickness of the thick portion 17A in the gooseneck mold 17G is large, it can be easily handled.

  As understood from the above description, the upper molds 17 and 17G can be attached to and detached from the upper mold holder 15 by using the ATC 20. Then, the upper molds 17 and 17G are provided with fingers 53 in the ATC 20 at the center in the width direction (left and right direction) of the thick part 17A provided close to the mounting part 79 provided on the upper parts of the upper molds 17 and 17G. It is the structure provided with the circular-shaped through-hole 51 which penetrates 53A of small diameter parts. Therefore, the configuration of the upper molds 17 and 17G can be simplified, and the vertical dimension of the upper molds 17 and 17G can be reduced as compared with the case where the through hole is a long hole in the vertical direction. Moreover, since the through hole 51 is a round hole, the processing of the through hole 51 is easy.

  As already understood, by processing the through hole and the non-rotating portion in a post-process on the split mold mounted on the upper mold holder described in Patent Documents 2 and 3, Patent Documents 2 and 3 The split upper die can be attached / detached and exchanged using the ATC for the upper die holder described in (1).

  In order to mount the divided upper molds 17 and 17G stored in the mold storage device 19 on the upper mold holder 15 provided on the upper table 11 in the press brake 1 by the upper mold changing device (ATC) 20, The ATC 20 is provided so as to reciprocate between the rear position of the upper mold holder 15 and the mold storage device 19.

  By the way, the overall configuration of the mold storage device 19 is substantially the same as the configuration of the mold storage device described in, for example, Japanese Patent Application Laid-Open No. 2006-83673 (hereinafter referred to as “Publication”). In the open gazette, an upper and lower mold exchanging device is provided so as to be movable in the left and right directions along the left and right guide rails provided on the upper and lower tables in the press brake. And it is described that the upper and lower mold exchanging apparatuses perform mold exchanging between the press brake and the mold exchanging apparatus. In other words, it is known to perform mold exchange between the press brake and the mold storage device.

  By the way, the present embodiment relates to the mounting of the divided upper mold 17 to the upper mold holder 15. Therefore, the case where the split upper die 17 is attached to the upper die holder 15 will be described. And the mounting | wearing of the division | segmentation lower mold | type 7 with respect to the lower mold | type mounting part 9 may apply the structure as described in the said gazette. Therefore, a description of the case where the divided lower mold 7 is mounted on the lower mold mounting portion 9 is omitted.

  In order to mount the divided upper mold 17 stored in the mold storage device 19 on the upper mold holder 15 provided in the press brake 1, the ATC 20 reciprocates between the press brake 1 and the mold storage device 19. It is equipped to move freely.

  That is, the guide rail 21, the beam member 25, the rack 27, and the like that guide the ATC 20 in the left-right direction are supported by an extension frame 81 (see FIG. 1) that extends from the rear side of the press brake 1 to the mold storage device 19 side. Yes. The extending frame 81 corresponds to the guide rail extending portion described in the above publication.

  The mold storage device 19 has the same configuration as the mold storage device described in the publication. Therefore, in brief, the mold storage device 19 lifts a desired stocker body 83 stored in the mold storage device 19 (the storage state is not shown), and a predetermined position on the front side of the stretching frame 81, That is, a stocker transport device 85 for transporting to the position of the stocker main body 83 shown in FIG.

  The stocker body 83 is configured to support the split upper die 17 so as to be detachable in the left-right direction (X-axis direction). That is, the stocker body 83 is provided with a mold mounting groove (not shown) that opens downward and is long in the left-right direction. The stocker transport device 85 lifts the stocker main body 83 in the mold storage device 19 and moves in the front-rear direction, and is aligned with a predetermined position corresponding to the ATC 20 that moves to the mold storage device 19 side (aligned with the upper mold holder 15 in the left-right direction). The positioner has a function of transporting and positioning the stocker body 83 at the position shown in FIG.

  As described above, when the stocker body 83 is positioned at the predetermined position (the position shown in FIG. 1) on the front side of the extending frame 81, the mold mounting groove provided in the stocker body 83 is provided in the upper mold holder 15. It communicates (aligns) in the left-right direction with one gap 15D (see FIG. 1) between the upper mold support portion 15C and the upper mold clamp 15A or 15B. Accordingly, the upper mold 17 can be moved directly in the left-right direction between the upper mold holder 15 and the stocker body 83.

  The stocker main body 83 and the stocker transport device 85 may have the same structure as the upper mold holder transport unit and the upper mold holder described in the above publication. Therefore, description of the details of the stocker main body 83 and the stocker transport device 85 is omitted.

  In the configuration as described above, as schematically shown in FIG. 7, the width dimension W1 in the left-right direction of the divided upper mold 17 supported by the stocker body 83 stored in the mold storage device 19 is arranged at appropriate intervals. When it is equal to the gap (interval) D of the upper mold holder 15 or when a relationship of W1 ≧ D is established, the following is performed.

  That is, the desired stocker main body 83 in the mold storage device 19 is lifted and transported in the front-rear direction by the stocker transport device 85 provided in the mold storage device 19. Then, the stocker body 83 is conveyed and positioned at the predetermined position on the front side of the stretching frame 81. In this stocker body 83, the ATC 20 is moved and positioned to the rear side of the divided upper die 17-1 closest to the press brake 1. Then, the small-diameter portion 53A of the finger 53 provided in the ATC 20 is inserted (locked) into the through hole 51 provided in the divided upper die 17-1, and the lock piece 55 protrudes from the outer peripheral surface. And it supports so that the division | segmentation upper mold | type 17-1 may not fall. Further, the anti-rotation member 69 provided in the ATC 20 is engaged with the anti-rotation portion 67 (not shown in FIG. 7) of the split upper mold 17-1, and the split upper mold 17-1 is prevented from rotating.

  Thereafter, the ATC 20 is moved to the press brake 1 side (left direction in FIG. 7) in order to remove the divided upper mold 17-1 from the mounting groove (not shown) provided in the stocker body 83 to the press brake 1 side. Then, the divided upper mold 17-1 is transported to the position of the upper mold holder 15 to be mounted and temporarily positioned.

  At this time, the upper clamps provided in all the upper mold holders 15 positioned between the upper mold holder 15 to be mounted and the mold storage device 19 so that the divided upper mold 17-1 can pass in the left-right direction. 15A and 15B (refer FIG. 4) are in the open state. Therefore, the attachment portion 79 provided on the upper portion of the divided upper die 17-1 passes through the gap 15D between the upper die support portion 15C provided on the upper die holder 15 and the upper die clamp 15A or 15B in the left-right direction. To be conveyed. Then, the divided upper mold 17-1 is temporarily positioned at the position of the upper mold holder 15 to be mounted.

  At this time, the vertical flat surface 79F provided in the attachment portion 79 provided in the split mold 17-1 is in surface contact with the upper die support portion 15C, and the upper die clamp 79G is provided in the left-right fall prevention groove 79G provided in the attachment portion 79. The gap 15D is selected according to the direction of the divided upper mold 17-1 so that the fall prevention claws 15E provided in 15A and 15B are engaged. Then, the finger 53 is detached from the through hole 51 of the divided upper mold 17-1 positioned temporarily. Thereafter, the temporarily positioned mounting portion 79 of the divided upper die 17-1 is pressed and fixed to the upper die support portion 15C by the upper die clamp 15A or 15B provided in the upper die holder 15. That is, the divided upper mold 17-1 is mounted on the upper mold holder 15.

  When the width W1 of the divided upper mold 17-1 and the distance D between the upper mold holders 15 are substantially equal, the divided upper mold 17-1 is mounted while avoiding the position of the distance D. In this case, the end portions of the divided upper die 17 mounted on the upper die holder 15 on both sides of the gap D may be combined in a state in which the end portions protrude into the gap D and the both end portions are in contact with each other.

  Then, the same conveying operation is repeated for the necessary number of divided upper molds 17 and the divided upper molds 17-1 and 17 are arranged in contact with each other as shown in FIG. By performing the reverse operation, the divided upper die 17-1 can be returned from the upper die holder 15 provided for the press brake to the stocker body 83.

  By the way, according to the above method, the circular through hole 51 as an example of the locking hole provided in the central portion of the divided upper mold 17 in the left-right direction (width direction) is provided with the rod shape (round bar shape) provided in the ATC 20. The small upper-diameter portion 53A of the finger 53 is penetrated (locked), and the anti-rotation member 67 is engaged with the anti-rotation member 69 provided in the divisional upper die 17 to convey the divisional upper die 17. Therefore, the divided upper mold 17 can be conveyed in a stable state, and the divided upper mold 17 can be quickly and smoothly exchanged with the upper mold holder 15.

  Further, as described above, the divided upper die 17 is provided with, for example, a round through hole 51 and a rotation preventing member 67 behind the normal general divided upper die that is attached to and detached from the upper die holder 15. It can also be used by processing. Therefore, the divided upper die 17 can be manually attached to and detached from the upper die holder 15 as in the conventional case. Moreover, it can be attached or detached by ATC20. Therefore, the versatility of the attachment / detachment exchange of the division | segmentation upper mold | type 17 with respect to the upper mold | type holder 15 improves.

  FIG. 9 shows a stocker body 87 according to the second embodiment. The stocker main body 87 is different from the stocker main body 83 only in a configuration in which a plurality of notches 89A, 89B, 89C, and 89D are provided at appropriate intervals in the X-axis direction. The notches 89A, 89B, 89C, and 89D are formed so as to cross the left and right mold mounting grooves 91 that detachably support the divided upper mold 17 in the stocker body 87 in the front-rear direction.

  That is, the notch portion 89A between the mounting position 93A of the large-size divided upper mold 17 that is detachably attached to the stocker body 87 and the mounting position 93B of the middle-width divided upper mold 17 The mold 17 is formed in a notch having a size capable of passing in the vertical direction and / or the front-rear direction. The notch 89B between the mounting position 93B and the mounting position 93C of the divided upper mold 17 having a small width dimension is a medium width through which the divided upper mold 17 having a medium width dimension can pass in the vertical direction and / or the front / rear direction. It is formed in the notch.

  In addition, the notch 89C between the mounting position 93C and the mounting position 93D of the divided upper mold 17 having a very small width is a small width that allows the divided upper mold 17 having a small width to pass in the vertical direction and / or the front-rear direction. It is formed in the notch. A notch 89D between the mounting position 93E and the mounting position 93D where the divided upper mold 17 having the minimum width is mounted adjacent to the mounting position 93D is arranged so that the divided upper mold 17 with the minimum width is in the vertical direction and / or Or it forms in the notch part of the minimum width which can pass in the front-back direction.

  As can be understood from the above configuration, the divided upper die 17 supported by the stocker body 87 moves in the left-right direction along the mold mounting groove 91, so that the corresponding width dimension or large width dimension can be cut. It can be moved and positioned to the positions of the notches 89 </ b> A to 89 </ b> D, and removed in the vertical direction or the front-back direction with respect to the stocker body 87. Therefore, when the split upper die 17 is attached to and detached from the stocker body 87 by the ATC 20, it can be attached and detached using the positions of the notches 89A to 89D corresponding to the width dimension of the split upper die 17.

  Therefore, the movement distance in the left-right direction of the divided upper mold 17 with respect to the stocker body 87 can be suppressed, and the divided upper mold 17 can be attached and detached efficiently. In other words, the split upper die 17 can be removed from the stocker main body 87 and the press brake 1 can be quickly mounted on the upper die holder 15.

  By the way, the width W1 of the small divided upper mold 17 and the extremely small divided upper mold 17 mounted at the mounting positions 93C, 93D, 93E in the stocker body 87 is mounted on the upper table 11 of the press brake 1. The dimension is smaller than the spacing dimension D of the upper mold holder 15. That is, D> W1. Therefore, the divided upper die 17 can be attached to the upper die holder 15 as follows.

  That is, the ATC 20 is positioned on the rear side of the position corresponding to the divided upper die 17 of the mounting positions 93C, 93D or 93E supported by the stocker body 87 positioned at a predetermined position on the front side of the stretching frame 81. Then, at the mounting position 93C, 93D or 93E, the small diameter portion 53A of the finger 53 is inserted into the through hole 51 in the split upper mold 17 on the right or left end side, and the lock piece 55 provided on the finger 53 is attached to the finger 53. It protrudes from the outer peripheral surface of. Then, the anti-rotation member 69 is engaged with the anti-rotation portion 67 of the split upper die 17 to prevent the split upper die 17 from rotating. Thereafter, the divided upper mold 17 is moved to the position of the notch 89B, 89C or 89D.

  And the division | segmentation upper mold | type 17 is taken out from the notch part 89B, 89C or 89D to the back side. Thereafter, the ATC 20 is moved in the left-right direction, and the divided upper mold 17 is temporarily positioned at a position corresponding to the gap adjacent to the upper mold holder 15 to which the divided upper mold 17 is to be mounted (see FIG. 10). Thereafter, the divided upper mold 17 is moved in the forward direction, and the divided upper mold 17 is temporarily positioned in the gap adjacent to the upper mold holder 15 to be mounted.

  The temporarily positioned mounting portion 79 of the divided upper die 17 is moved in the left-right direction, and a gap between the upper die support portion 15C provided in the upper die holder 15 to be attached and the upper die clamp 15A or 15B. Position temporarily in 15D. Then, the fingers 53 are extracted (detached) from the through holes 51 of the divided upper mold 17 which is temporarily lightly fixed by the upper mold clamp 15A or 15B. Thereafter, the attachment portion 79 of the divided upper die 17 is pressed and fixed to the upper die support portion 15C by the upper die clamp 15A or 15B.

  When the fingers 53 are extracted from the through holes 51 of the divided upper mold 17, the divided upper mold 17 can be firmly fixed in advance by the upper mold clamps 15A and 15B.

  By the way, it is common to mount a plurality of small divided upper molds 17 or extremely small divided upper molds 17 on one upper mold holder 15, for example, as shown in FIG. In this case, it is desirable that the adjacent divided upper dies 17 are in contact with each other without being separated from each other. Accordingly, the divided upper mold 17 is held slightly loosely so as not to fall, and is brought into contact with each other each time the divided upper mold 17 is arranged (attached) to one upper mold holder 15. Alternatively, after the plurality of divided upper dies 17 are mounted on the upper die holder 15, all the divided upper dies 17 can be brought into contact with each other in a lump by appropriately sandwiching them from the left and right sides.

  By the way, in the stocker main body 87, the divided upper mold 17 attached to the stocker main body 87 moves in the left-right direction, and is temporarily positioned at the positions of the corresponding notches 89A to 89D, so that the rear Can be removed (removed) to the side. Therefore, the divided upper mold 17 having a relatively large width dimension is temporarily positioned at a position corresponding to the corresponding notch 89A. Then, as shown in FIG. 11, by raising the stocker body 87, the divided upper mold 17 can be taken out relatively downward from the stocker body 87.

  Therefore, the ATC 20 is moved to the press brake 1 side at the position where the divided upper mold 17 is relatively removed. Therefore, as shown in FIG. 12, the divided upper mold 17 taken out can be mounted as it is on the upper mold holder 15 at a desired position provided in the press brake 1. That is, it is possible to easily cope with the divided upper mold 17 having a width dimension larger than the gap dimension D between the upper mold holders 15 provided adjacent to the press brake 1.

  As already understood, by positioning the split upper die 17 at the position of the notch provided in the stocker body 87, the split upper die 17 can be removed rearward. Moreover, the division | segmentation upper mold | type 17 can be removed to a lower side relatively by raising the stocker main body 87. FIG. Therefore, the divided upper die 17 is moved to the press brake 1 side by removing the divided upper die 17 and moved to the press brake side at the position where it is removed relatively downward. It can be attached and detached.

  As can be understood from the above description, a mold changer (ATC) is used for the upper mold holder 15 provided at the lower portion of the upper table 11 in the press brake 1 and spaced in the left-right direction at appropriate intervals. When the split upper die 17 is mounted, the small diameter portion 53A of the round bar-like finger 53 provided in the ATC 20 is inserted into the circular through hole (locking hole) 51 provided in the central portion of the split upper die 17 in the width direction. Is inserted (locked).

  Therefore, the divided upper mold 17 is supported in a stable state by the ATC 20 without falling. And the support structure of ATC20 and the division | segmentation upper mold | type 17 is a simple structure which inserted the rod-shaped finger 53 in the circular through-hole 51. As shown in FIG. Therefore, the configuration of the ATC 20 and the configuration of the divided upper mold 17 can be simplified.

  Further, when the divided upper mold 17 having a small width dimension is mounted on the upper mold holder 15, the ATC 20 positions the divided upper mold 17 within a gap (interval) adjacent to the upper mold holder 15 to be mounted. Then, the ATC 20 is moved laterally in the left-right direction, and the divided upper die 17 is attached to the upper die holder 15 to be attached. Therefore, it is possible to efficiently mount the divided upper mold 17 on the upper mold holder 15 to be mounted.

  Furthermore, the mold exchanging device may be provided with a round bar-like finger 53 that is inserted into the circular through hole 51 provided in the divided upper die 17, and the configuration can be simplified.

  The stocker main body 87 has a configuration in which notched portions 89A to 89D corresponding to the width of the supported divided upper mold 17 are provided at appropriate intervals. Therefore, the divided upper mold 17 supported by the stocker body 87 can be quickly removed from the stocker body 87 by positioning the divided upper mold 17 in the corresponding notches 89A to 89D.

  The present invention is not limited to the embodiment as described above, and can be implemented in other forms by making appropriate changes. That is, for example, notch portions of an appropriate size are formed at appropriate intervals in the lower support member of the replacement upper mold support member that supports the plurality of divided upper molds described in Patent Document 1. And it is also possible to make it the structure which removes a division | segmentation upper type | mold from this notch part.

  Further, the mold exchanging device is not limited to the above-described ATC, and for example, a manipulator such as an industrial robot may be used.

  Incidentally, FIG. 1 illustrates a case where the upper mold holders 15 are provided at equal intervals. However, the upper mold holder 15 at an appropriate position is removed. It is also possible to increase the interval between the adjacent upper die holders 15 and use the position of the increased interval to attach and detach the divided upper die having a large width dimension.

DESCRIPTION OF SYMBOLS 1 Press brake 15 Upper mold holder 15A, 15B Upper mold clamp 15C Upper mold support part 19 Mold storage apparatus 20 Upper mold exchange apparatus (ATC)
51 Through hole (locking hole)
53 Finger 55 Lock piece (locking piece)
63 Operation rod 67 Non-rotating portion 69 Non-rotating member 79 Mounting portion 83 Stocker body 85 Stocker transfer device 87 Second stocker body 89A, 89B, 89C Notch portion 91 Mold mounting groove 93A, 93B, 93C Mounting position

Claims (16)

This is a split upper mold mounting method in which a split upper mold is mounted using a mold changer to a plurality of upper mold holders arranged at appropriate intervals in the left-right direction below the upper table of the press brake. And
(A) the locking hole provided in the lateral center part in the divided upper mold which is supported in the mold stocker, engages the rod-like fingers with the mold exchanging device, divided from the mold stocker Removing each upper mold,
(B) the removed divided upper mold, the step of temporarily positioned by the die exchanging device in the gap between the upper die holder adjacent to the upper holder to be mounted,
(C) The divided upper mold is moved between the upper mold support provided in the upper mold holder to be mounted and the upper mold clamp provided in the upper mold holder by moving the temporarily positioned divided upper mold in the left-right direction. Temporarily positioning the mounting portion provided for,
(D) a step of removing the fingers from the locking holes of the divided upper mold temporarily positioned;
(E) a step of fixing the mounting portion of the divided upper mold temporarily positioned to the upper mold holder;
A split upper mold mounting method characterized by comprising: In the mounting method of the split upper mold according to claim 1,
Each time a plurality of divided upper mold mounting portions are temporarily positioned between the upper mold supporting portion and the upper clamp in one upper mold holder, or a plurality of divided upper mold mounting portions are temporarily positioned. A step of bringing a plurality of adjacent divided upper molds into contact with each other,
A split upper mold mounting method characterized by comprising: This is a split upper mold mounting method in which a split upper mold is mounted using a mold changer to a plurality of upper mold holders arranged at appropriate intervals in the left-right direction below the upper table of the press brake. And
(A) the locking hole provided in the lateral center part in the divided upper mold which is supported in the mold stocker, engages the rod-like fingers with the mold exchanging device, from the mold stocker A step of removing each of the divided upper molds,
(B) moving said die exchanging device in the lateral direction, the mounting portion of the removable split upper die, the right and left between the upper mold support and the upper tool clamp with the upper holder which is closest to the stocker Passing in the direction,
(C) a step of temporarily positioning the attachment portion of the divided upper mold to be mounted between the upper mold support portion and the upper mold clamp provided in the upper mold holder to which the divided upper mold is to be mounted;
(D) a step of removing the fingers from the locking holes of the divided upper mold temporarily positioned;
(E) fixing the temporarily positioned upper part of the divided upper mold to the upper mold holder;
A split upper mold mounting method characterized by comprising: A plurality of upper mold holders are provided at the lower part of the upper table in the press brake, with a plurality of upper mold holders spaced from each other at appropriate intervals in the left-right direction. A split upper mold mounting method comprising a mold stocker and mounting a split upper mold supported by the mold stocker on an upper mold holder,
(A) A mold exchanging device that is movable in the left-right direction from the rear side of the upper table to the rear side of the mold stocker, wherein a rod-like finger provided in the mold exchanging device is connected to the mold. A step of locking in a locking hole provided in a central portion in the left-right direction of the divided upper mold supported by the stocker;
(B) a step of moving the divided upper mold with the fingers locked in the left-right direction to move to the position of the notch formed in the mold stocker;
(C) moving the mold stocker upward, and removing the divided upper mold through which the fingers are inserted relatively downward from the mold stocker;
And (d) moving the die exchanging device in the lateral direction, the mounting portion of the split upper die held by fingers, between the upper mold support and upper mold clamping of the upper mold holder with the upper table Temporarily positioning,
(E) a step of removing the finger from the temporarily positioned split upper mold locking hole;
(F) fixing the temporarily positioned upper portion of the divided upper mold to the upper mold holder;
A split upper mold mounting method characterized by comprising: In the mounting method of the split upper mold according to claim 4,
A step of bringing a plurality of adjacent divided upper dies into contact with each other each time the mounting portions of the plurality of divided upper dies are temporarily positioned between the upper die supporting portion and the upper die clamp in the plurality of upper die holders;
A split upper mold mounting method characterized by comprising: A plurality of upper mold holders are provided at the lower part of the upper table in the press brake, with a plurality of upper mold holders spaced from each other at appropriate intervals in the left-right direction. A split upper mold mounting method comprising a mold stocker and mounting a split upper mold supported by the mold stocker on an upper mold holder,
(A) A mold exchanging device that is movable in the left-right direction from the rear side of the upper table to the rear side of the mold stocker, wherein a rod-like finger provided in the mold exchanging device is connected to the mold. A step of locking in a locking hole provided in a central portion in the left-right direction of the divided upper mold supported by the stocker;
(B) a step of moving the divided upper mold with the fingers locked in the left-right direction to move to the position of the notch formed in the mold stocker;
(C) The step of removing the divided upper die locked to the fingers in the rear direction from the notch,
(D) The step of moving the divided upper mold removed in the rearward direction in the left-right direction and temporarily positioning it in the gap between the upper mold holder to be mounted and the adjacent upper mold holder;
(E) The split upper die temporarily positioned in the gap is moved in the left-right direction so that the mounting portion provided for the split upper die is located between the upper die support portion of the upper die holder to be mounted and the upper die clamp. Temporarily locating and releasing the finger from the locking hole of the split upper mold,
(F) fixing the temporarily positioned upper part of the divided upper mold to the upper mold holder;
A split upper mold mounting method characterized by comprising: In the mounting method of the split upper mold according to claim 6,
Each time a plurality of divided upper mold mounting portions are temporarily positioned between the upper mold supporting portion and the upper clamp in one upper mold holder, or a plurality of divided upper mold mounting portions are temporarily positioned. A step of bringing a plurality of adjacent divided upper molds into contact with each other,
A split upper mold mounting method characterized by comprising: This is a die changer used in a split upper die mounting method in which a split upper die is attached to a plurality of upper die holders arranged at appropriate intervals in the left-right direction at the lower part of an upper table in a press brake. And
A movable member capable of reciprocating between a position corresponding to a plurality of upper mold holders and a position corresponding to a mold stocker that removably supports a plurality of divided upper molds;
A rod-like finger that can be locked in a locking hole in the front-rear direction provided at the center in the left-right direction in the divided upper mold is provided in the moving member ,
The mold changer is
(A) a step of removing fingers one by one from the mold stocker by locking fingers to the locking holes in the divided upper mold supported by the mold stocker;
(B) a step of temporarily positioning the detached divided upper die within a gap between the upper die holder to be mounted and the adjacent upper die holder;
(C) The divided upper mold is moved between the upper mold support provided in the upper mold holder to be mounted and the upper mold clamp provided in the upper mold holder by moving the temporarily positioned divided upper mold in the left-right direction. Temporarily positioning the mounting portion provided for,
(D) a step of removing the fingers from the locking holes of the divided upper mold temporarily positioned;
(E) A mold exchanging apparatus characterized by performing a step of fixing an attachment portion of the temporarily positioned divided upper mold to the upper mold holder . This is a die changer used in a split upper die mounting method in which a split upper die is attached to a plurality of upper die holders arranged at appropriate intervals in the left-right direction at the lower part of an upper table in a press brake. And
A movable member capable of reciprocating between a position corresponding to a plurality of upper mold holders and a position corresponding to a mold stocker that removably supports a plurality of divided upper molds;
A rod-like finger that can be locked in a locking hole in the front-rear direction provided at the center in the left-right direction in the divided upper mold is provided in the moving member ,
The mold changer is
(A) a step of removing fingers one by one from the mold stocker by locking fingers to the locking holes in the divided upper mold supported by the mold stocker;
(B) a step of moving in the left-right direction and passing the attachment portion in the removed divided upper die in the left-right direction between the upper die support portion provided in the upper die holder closest to the stocker and the upper die clamp;
(C) a step of temporarily positioning the attachment portion of the divided upper mold to be mounted between the upper mold support portion and the upper mold clamp provided in the upper mold holder to which the divided upper mold is to be mounted;
(D) a step of removing the fingers from the locking holes of the divided upper mold temporarily positioned;
(E) A mold exchanging apparatus characterized by performing a step of fixing a temporarily positioned mounting portion of the divided upper mold to an upper mold holder . A plurality of upper mold holders are provided at the lower part of the upper table in the press brake, with a plurality of upper mold holders spaced from each other at appropriate intervals in the left-right direction. A mold changer for use in a split upper mold mounting method that includes a mold stocker and mounts a split upper mold supported by the mold stocker to an upper mold holder ,
Comprising a position corresponding to a plurality of upper holder, the reciprocable movement member between a position corresponding to the mold stocker,
A rod-like finger that can be locked in a locking hole in the front-rear direction provided at the center in the left-right direction in the divided upper mold is provided in the moving member ,
The mold changer is
It is configured to be movable in the left-right direction over the rear side of the mold stocker from the rear side of the upper table,
The mold changer is
(A) A step of locking a finger in a locking hole in the divided upper mold supported by the mold stocker,
(B) a step of moving the divided upper mold with the fingers locked in the left-right direction to move to the position of the notch formed in the mold stocker;
(C) moving the mold stocker upward, and removing the divided upper mold through which the fingers are inserted relatively downward from the mold stocker;
(D) The process of moving to the left-right direction and temporarily positioning the attachment part of the division | segmentation upper mold | type hold | maintained with the finger between the upper mold | type support part and upper mold | type clamp in the upper mold | type holder with which the said upper table was equipped. ,
(E) a step of removing the finger from the temporarily positioned split upper mold locking hole;
(F) A mold exchanging apparatus characterized by performing a step of fixing the temporarily positioned upper part mounting portion of the divided upper mold to the upper mold holder . A plurality of upper mold holders are provided at the lower part of the upper table in the press brake, with a plurality of upper mold holders spaced from each other at appropriate intervals in the left-right direction. A mold changer for use in a split upper mold mounting method that includes a mold stocker and mounts a split upper mold supported by the mold stocker to an upper mold holder ,
Comprising a position corresponding to a plurality of upper holder, the reciprocable movement member between a position corresponding to the mold stocker,
A rod-like finger that can be locked in a locking hole in the front-rear direction provided at the center in the left-right direction in the divided upper mold is provided in the moving member ,
The mold changer is
It is configured to be movable in the left-right direction over the rear side of the mold stocker from the rear side of the upper table,
The mold changer is
(A) A step of locking a finger in a locking hole in the divided upper mold supported by the mold stocker,
(B) a step of moving the divided upper mold with the fingers locked in the left-right direction to move to the position of the notch formed in the mold stocker;
(C) The step of removing the divided upper die locked to the fingers in the rear direction from the notch,
(D) The step of moving the divided upper mold removed in the rearward direction in the left-right direction and temporarily positioning it in the gap between the upper mold holder to be mounted and the adjacent upper mold holder;
(E) The split upper die temporarily positioned in the gap is moved in the left-right direction so that the mounting portion provided for the split upper die is located between the upper die support portion of the upper die holder to be mounted and the upper die clamp. Temporarily locating and releasing the finger from the locking hole of the split upper mold,
(F) A mold exchanging apparatus characterized by performing a step of fixing a temporarily positioned mounting portion of the divided upper mold to the upper mold holder . The mold exchanging apparatus according to any one of claims 8 to 11,
A mold exchanging apparatus comprising: a back-and-forth movement member provided on the finger, and a rotation-preventing member that is freely engageable and disengageable with a rotation-preventing portion provided close to a locking hole in the divided upper mold. The mold exchanging apparatus according to any one of claims 8 to 12,
A mold replacement comprising a lock piece in the vicinity of the tip of the finger, and the lock piece is provided so as to protrude and retract with respect to the outer peripheral surface of the finger in order to prevent the split upper mold from falling off. apparatus. A plurality of upper mold holders are provided at the lower part of the upper table in the press brake, with a plurality of upper mold holders spaced from each other at appropriate intervals in the left-right direction. A mold stocker for use in a split upper mold mounting method that includes a mold stocker and mounts a split upper mold supported by the mold stocker to an upper mold holder ,
It has a stocker body that supports the split upper mold so that it can move in the left-right direction.
The stocker body is provided with a notch for removing the divided molds one by one downward or in the front-rear direction ,
The split upper mold mounting method is as follows:
(A) A mold exchanging device that is movable in the left-right direction from the rear side of the upper table to the rear side of the mold stocker, wherein a rod-like finger provided in the mold exchanging device is connected to the mold. A step of locking in a locking hole provided in a central portion in the left-right direction of the divided upper mold supported by the stocker;
(B) a step of moving the divided upper mold with the fingers locked in the left-right direction to move to the position of the notch formed in the mold stocker;
(C) moving the mold stocker upward, and removing the divided upper mold through which the fingers are inserted relatively downward from the mold stocker;
(D) Moving the mold exchanging device in the left-right direction, and attaching the split upper mold mounting part held by the fingers between the upper mold support part and the upper mold clamp in the upper mold holder provided in the upper table Temporarily positioning,
(E) a step of removing the finger from the temporarily positioned split upper mold locking hole;
(F) A mold stocker comprising: a step of fixing the temporarily positioned upper portion of the divided upper mold mounting portion to the upper mold holder . A plurality of upper mold holders are provided at the lower part of the upper table in the press brake, with a plurality of upper mold holders spaced from each other at appropriate intervals in the left-right direction. A mold stocker for use in a split upper mold mounting method that includes a mold stocker and mounts a split upper mold supported by the mold stocker to an upper mold holder ,
It has a stocker body that supports the split upper mold so that it can move in the left-right direction.
The stocker body is provided with a notch for removing the divided molds one by one downward or in the front-rear direction ,
The split upper mold mounting method is as follows:
(A) A mold exchanging device that is movable in the left-right direction from the rear side of the upper table to the rear side of the mold stocker, wherein a rod-like finger provided in the mold exchanging device is connected to the mold. A step of locking in a locking hole provided in a central portion in the left-right direction of the divided upper mold supported by the stocker;
(B) a step of moving the divided upper mold with the fingers locked in the left-right direction to move to the position of the notch formed in the mold stocker;
(C) The step of removing the divided upper die locked to the fingers in the rear direction from the notch,
(D) The step of moving the divided upper mold removed in the rearward direction in the left-right direction and temporarily positioning it in the gap between the upper mold holder to be mounted and the adjacent upper mold holder;
(E) The split upper die temporarily positioned in the gap is moved in the left-right direction so that the mounting portion provided for the split upper die is located between the upper die support portion of the upper die holder to be mounted and the upper die clamp. Temporarily locating and releasing the finger from the locking hole of the split upper mold,
(F) A mold stocker comprising a step of fixing the temporarily positioned upper mounting portion of the divided upper mold to the upper mold holder . The mold stocker according to claim 14 or 15,
A mold stocker characterized in that a plurality of notches having different width dimensions corresponding to a plurality of types of width dimensions of the divided upper mold supported by the mold stocker are provided at appropriate intervals in the stocker body.

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