JP6272008B2 - Mold storage rack - Google Patents

Description

  The present invention relates to a mold storage rack that is used to automatically replace a mold with respect to a mold mounting portion of a table in a press brake and stores a large number of molds.

  2. Description of the Related Art In recent years, various developments have been made on a mold storage rack that is a peripheral device of a press brake. The configuration of the mold storage rack according to the prior art is as follows.

  The mold storage rack according to the prior art includes a box frame-shaped rack body (main body frame) extending in the vertical direction. Further, the rack body has a front opening for automatically changing the mold on the front side, and a back opening for an operator to access on the back side. Furthermore, a plurality of storage holders (storage portions) for holding (storing) the mold in a detachable manner are provided in the rack body along the vertical direction.

  A first protective wall (first shutter) that opens and closes the front opening of the rack body is provided on the front side of the rack body. A second protective wall (second shutter) that opens and closes the rear opening of the rack body is provided on the back side of the rack body. Here, in order to sufficiently ensure the safety of the worker, one of the first protective wall and the second protective wall is closed with the other protective wall closing the front opening or the rear opening of the rack body. Only when it is in a state, the rear opening or the front opening of the rack body can be opened and closed independently. In other words, when one protective wall is in a state where the rear opening or the front opening of the rack body is open, the other protective wall is in a state where the front opening or the rear opening of the rack body is closed.

  Therefore, when the first protective wall is in a state in which the front opening of the rack body is closed, the rear opening of the rack body is opened by the second protective wall, so that the bending work by the press brake is not interrupted. A person can access an appropriate storage holder from the rear opening of the rack body to perform the attaching / detaching work (attachment work and removal work) of the mold.

Special table 2013-538698 gazette

  By the way, as described above, when the first protective wall is in a state where the front opening of the rack body is opened, the second protective wall is in a state where the rear opening of the rack body is closed. While the mold is automatically transferred between the table and the mold mounting portion of the table, the operator cannot access the appropriate storage holder to perform the mold attaching / detaching operation. In other words, when the worker accesses the appropriate storage holder and performs the attaching / detaching operation of the mold during the automatic replacement of the mold with respect to the mold mounting portion of the table, the automatic replacement of the mold is temporarily interrupted. Thus, it is necessary to close the front opening of the rack body with the first protective wall and open the back opening of the rack body with the second protective wall. Therefore, there is a problem that a series of operations related to bending work becomes complicated and it is difficult to sufficiently improve the productivity of the press brake.

  Then, an object of this invention is to provide the novel metal mold | die storage rack which can solve the above-mentioned problem.

A feature of the present invention is that a mold storage rack is used to automatically replace a mold with respect to a mold mounting portion of a table in a press brake. A box-shaped rack body that has a front opening for automatic replacement, and has a rear opening for workers to access the back side to perform mold attachment / detachment , and extends vertically and (body frame), the rack provided top each rotatable about a horizontal axis of the body, a first upper rotary wheel and a second upper rotary wheel spaced in a rack width direction, in the rack body The first lower rotating wheel and the second lower rotating wheel , which are respectively provided so as to be rotatable about a horizontal axis at the lower part and are separated in the rack width direction, and between the first upper rotating wheel and the first lower rotating wheel. Circulated in the circumferential direction A first traveling member row possible endless, it said provided to turn over between the second upper rotary wheel and the second lower rotary wheel, circumferentially circulating drivable endless second traveling member And is provided along the circumferential direction so as to span between the first traveling member and the second traveling member , extends in the rack width direction, and attaches and detaches the mold on one side in the short direction. A plurality of storage holders (storage portions) that are held (stored) in a possible manner, and provided in the rack body, and between the first upper rotating wheel and the first lower rotating wheel, the second upper rotating wheel and the It extends in the rack width direction across the second lower rotating wheel, and is configured to be surrounded by the plurality of storage holders when viewed from the rack width direction, and the inside of the rack body is on the front opening side. It is summarized in that provided with the, a separator separating the rear opening side and .

  Here, in the specification and claims of the present application, “table” means an upper table and a lower table in a press brake, and “die” means a punch die and a die die. It is meant to include. Further, “provided” means that it is indirectly provided through another member in addition to being directly provided.

According to the characteristics of the present invention, the predetermined traveling holder is indexed to a predetermined position on the front opening side of the rack body by causing the first traveling member and the second traveling member to circulate in synchronization . Accordingly, the mold can be automatically transferred between the predetermined storage holder and the mold mounting portion of the table using a mold transfer device such as a mold transfer robot, in other words, The mold can be automatically exchanged for the mold mounting portion of the table.

Further, by circulating the first traveling member and the second traveling member synchronously , another predetermined storage holder is indexed to an appropriate position on the rear opening side of the rack body. Thereby, an operator can access another predetermined said storage holder from the said back surface opening part of the said rack main body, and can perform the attachment or detachment operation | work (attachment operation | work and removal operation | work) of the said metal mold | die.

Here, since the inside of the rack main body is separated into the front opening side and the back opening side by the separator , after sufficiently ensuring the safety of the operator, the bending by the press brake and the Without interrupting the automatic replacement of the mold with respect to the mold mounting portion of the table, an operator can access another predetermined storage holder to perform the mounting / demounting operation of the mold.

  According to the present invention, an operator accesses another predetermined storage holder without interrupting bending by the press brake and automatic replacement of the mold with respect to the mold mounting portion of the table. Since the mold can be attached and detached, the efficiency of a series of operations related to bending can be improved, and the productivity of the press brake can be sufficiently improved.

FIG. 1 is a side sectional view of a mold storage rack according to an embodiment of the present invention. FIG. 2 is an enlarged view of the arrow II in FIG. FIG. 3 is a front view of the mold storage rack according to the embodiment of the present invention. FIG. 4 is a rear view of the mold storage rack according to the embodiment of the present invention. FIG. 5 is a perspective view seen from the back side of the mold storage rack according to the embodiment of the present invention. FIG. 6 is a perspective view seen from the front side of the mold storage rack according to the embodiment of the present invention. FIG. 7 is a perspective view showing a configuration around the mold storage rack according to the embodiment of the present invention.

  An embodiment of the present invention will be described with reference to FIGS. In the drawings, “L” indicates the left direction, “R” indicates the right direction, “FF” indicates the front direction, and “FR” indicates the rear direction.

  As shown in FIGS. 2, 6, and 7, the mold storage rack 1 according to the embodiment of the present invention is disposed on the side of the press brake 3 and includes a number of punch dies P and a number of die dies. The mold D is accommodated. In addition, the mold storage rack 1 is configured such that the punch mold P and the die mold D are moved by the mold transport robot 13 with respect to the upper mold holder 7 of the upper table 5 and the lower mold holder 11 of the lower table 9 in the press brake 3. It is used to perform automatic exchange.

  Here, the punch die P has a shank portion Ps on the base end side, and a locking projection Pb is provided on the side surface of the shank portion Ps of the punch die P so as to be able to appear and retract. Further, the die die D has a shank portion Ds having the same shape as the shank portion Ps of the punch die P on the base end side, and a locking protrusion is formed on the side surface of the shank portion Ds of the die die D. Db is provided so that it can appear and disappear.

In the upper mold holder 7 as the upper mold mounting portion, as shown in, for example, JP-A-2004-337950, JP-A-2000-71028, and WO00 / 41824, the punch mold P An upper mounting groove (not shown) for fitting the shank portion Ps and the like is formed, and the upper mounting groove extends in the X-axis direction (left-right direction). Further, upper locking grooves (not shown) for locking the locking projections Pb and the like of the punch mold P are formed on a pair of opposing inner wall surfaces in the upper mounting groove of the upper mold holder 7 respectively. Each upper locking groove extends in the X-axis direction. Similarly, a lower mounting groove (not shown) for fitting the shank portion Ds of the die mold D and the like is formed in the lower mold holder 11 as the lower mold mounting portion. Extends in the X-axis direction. Further, a lower locking groove (not shown) for locking the locking protrusion Db of the die mold D and the like is formed on a pair of opposing inner wall surfaces in the lower mounting groove of the lower mold holder 11. Each lower locking groove extends in the X-axis direction. Further, the mold transfer robot 13 as a mold transfer device is a known 6-axis articulated robot, and can be moved in the X-axis direction by a carriage 15.

  As shown in FIGS. 1 to 4, the mold storage rack 1 includes a box-shaped rack body 17 disposed on the side of the press brake 3, and the rack body 17 has a Z-axis direction. It extends in the (vertical direction). The rack body 17 includes a frame-like floor member 19 extending in the X-axis direction (rack width direction WD), and a pair of side walls provided integrally with both ends of the floor member 19 and extending in the Z-axis direction. The members 21 and 23, and the ceiling member 25 provided so as to connect the upper end portion of one side wall member 21 and the upper end portion of the other side wall member 23 and extending in the X-axis direction, and the like. The rack body 17 has a front opening 27 for automatically exchanging the punch mold P and the die mold D on the front side, and the rear side for the operator M to access the back side. An opening 29 is provided.

  A first upper sprocket 31 as a first upper rotating wheel is provided on the upper side of the inner side surface of one side wall member 21 so as to be rotatable around a horizontal axis (the axis of the first upper sprocket 31). . A second upper sprocket 33 as a second upper rotating wheel is provided at the upper part of the inner side surface of the other side wall member 23 so as to be rotatable around a horizontal axis (the axis of the second upper sprocket 33). ing. In other words, the first upper sprocket 31 and the second upper sprocket 33 are provided at the upper part in the rack body 17 so as to be separated from each other in the X-axis direction and rotatable around a horizontal axis. The first upper sprocket 31 and the second upper sprocket 33 are integrally connected by an upper connecting shaft 35 extending in the X-axis direction.

A first lower sprocket 37 as a first lower rotating wheel is provided at the lower part of the inner side surface of one side wall member 21 so as to be rotatable around a horizontal axis (the axis of the first lower sprocket 37). . A second lower sprocket 39 as a second lower rotating wheel is provided at the lower portion of the inner side surface of the other side wall member 23 so as to be rotatable around a horizontal axis (the axis of the second lower sprocket 39). ing. In other words, the first lower sprocket 37 and the second lower sprocket 39 are provided in the lower portion of the rack body 17 so as to be separated from each other in the X-axis direction and rotatable about a horizontal axis. The first lower sprocket 37 and the second lower sprocket 39 are integrally connected by a lower connecting shaft 41 extending in the X-axis direction, as shown in FIGS. 1, 3, and 5. An endless first traveling chain 43 as an endless first traveling member is provided between the sprocket 31 and the first lower sprocket 37 so as to wrap around the circumferential direction. Can be circulated. Further, an endless second traveling chain 45 as an endless second traveling member is provided between the second upper sprocket 33 and the second lower sprocket 39 so as to hang around. 45 can circulate in the circumferential direction. A travel motor 47 for causing the first travel chain 43 and the second travel chain 45 to travel in synchronization is provided at an appropriate position below the rack body 17. Further, the output shaft of the traveling motor 47 is interlocked and connected to the lower connecting shaft 41 via the main driving pulley 49, the driven pulley 51, and the connecting belt 53.

  As shown in FIGS. 1 to 3, a plurality of punch dies P and a plurality of die dies D are detachably held (accommodated) between the first traveling chain 43 and the second traveling chain 45. Storage holders (storage sections) 55 are provided along the circumferential direction so as to hang over, and each storage holder 55 extends in the X-axis direction. A first holder mounting groove 57 for fitting the shank portion Ps of the punch die P or the shank portion Ds of the die die D is formed on one side of each storage holder 55 in the short direction. The first holder mounting groove 57 extends in the X-axis direction. Further, a first pair for engaging the engaging protrusion Pb of the punch die P or the engaging protrusion Db of the die die D with the pair of opposing inner wall surfaces in the first holder mounting groove 57 of each storage holder 55. Each holder locking groove 59 is formed, and each first holder locking groove 59 extends in the X-axis direction. Similarly, a second holder mounting groove 61 for fitting the shank part Ds of the die mold D or the shank part Ps of the punch mold P is formed on the other side of the storage holder 55 in the short direction. The second holder mounting groove 61 extends in the X-axis direction. Also, a second pair for engaging the locking projection Db of the die mold D or the locking projection Pb of the punch mold P with the pair of opposing inner wall surfaces in the second holder mounting groove 61 of each storage holder 55. Each holder locking groove 63 is formed, and each second holder locking groove 63 extends in the X-axis direction.

As shown in FIGS. 1, 3, and 6, in the rack body 17 is provided so as separator 65 is surrounded by a plurality of storage holders 55, the separator 65 is a front of the rack body 17 It is separated into the opening 27 side and the back opening 29 side, and extends in the X-axis direction and the Z-axis direction (vertical direction). One side of the separator 65 in the X-axis direction is fixed to one side wall member 21, and the other side of the separator 65 in the X-axis direction is fixed to the other side wall member 23. Furthermore, it is desirable that at least a part of the separator 65 has permeability.

  A cover member 67 is provided on the back side of the rack body 17, and a cover opening 69 is formed in the cover member 67 so as to align (communicate) with the back opening 29 of the rack body 17. . The cover member 67 is provided with a shutter 71 that opens and closes the cover opening 69 of the cover member 67 so as to be movable in the Z-axis direction. In other words, a shutter 71 that opens and closes the rear opening 29 of the rack body 17 is provided on the rear side of the rack body 17 so as to be movable in the Z-axis direction via the cover member 67. Furthermore, it is desirable that at least a part of the cover member 67 or the shutter 71 has transparency. Instead of using the cover member 67 and the shutter 71 in the mold storage rack 1, for example, a photoelectric safety device as disclosed in JP 2000-317698 A and JP 9-192744 A may be used.

  Then, the effect | action and effect of embodiment of this invention are demonstrated.

  In a state where the rear opening 29 of the rack body 17 is closed by the shutter 71, the first traveling chain 43 and the second traveling chain 45 are synchronously circulated by driving the traveling motor 47, whereby the predetermined storage holder 55 is moved. The rack body 17 is indexed to a predetermined position on the front opening 27 side. Accordingly, the punch mold P or the die mold D between the predetermined storage holder 55 and the upper mold holder 7 of the upper table 5 or the lower mold holder 11 of the lower table 9 using the mold transport robot 13. Can be automatically transported. In other words, the punch mold P or the die mold D can be automatically replaced with respect to the upper mold holder 7 of the upper table 5 or the lower mold holder 11 of the lower table 9.

  In addition, when the rear opening 29 of the rack body 17 is closed by the shutter 71, the first traveling chain 43 and the second traveling chain 45 are synchronously circulated by driving the traveling motor 47, so that another predetermined The storage holder 55 is indexed to an appropriate position on the rear opening 29 side of the rack body 17. Subsequently, the shutter 71 is moved to one side (downward) in the Z-axis direction to open the rear opening 29 of the rack body 17. As a result, as shown in FIGS. 5 and 6, the operator M accesses another predetermined storage holder 55 from the rear opening 29 of the rack body 17 and attaches / detaches the punch die P or die die D ( Installation and removal work).

Here, since the inside of the rack body 17 is separated by the separator 65 into the front opening 27 side and the back opening 29 side, the bending work by the press brake 3 can be performed while ensuring the safety of the worker M sufficiently. Without interrupting automatic replacement of the punch die P with respect to the upper die holder 7 etc. of the upper table 5, the worker M accesses another predetermined storage holder 55 and attaches / detaches the punch die P etc. be able to.

  Further, when a part of the separator 65 is permeable and a part of the cover member 67 or the shutter 71 is permeable, the operator M uses the press brake 3 from the back side of the mold storage rack 1. It is possible to observe the state of bending or the state of automatic replacement of the punch die P or the like by the die transport robot 13.

  As described above, according to the embodiment of the present invention, the operator M can be separated without interrupting the bending process by the press brake 3 and the automatic replacement of the punch mold P with respect to the upper mold holder 7 of the upper table 5 and the like. The predetermined holder 55 can be accessed to perform the attaching / detaching operation of the punch die P or the like, so that the efficiency of a series of operations related to the bending process is improved and the productivity of the press brake 3 is sufficiently improved. be able to.

  In particular, when a part of the separator 65 is permeable, the operator M can observe the bending process by the press brake 3 from the back side of the mold storage rack 1 and is related to the bending process. The efficiency of a series of operations can be further increased.

P Punch mold Pb Locking protrusion Ps Shank part D Die mold Db Locking protrusion Ds Shank part M Worker 1 Mold storage rack 3 Press brake 5 Upper table 7 Upper mold holder 9 Lower table 11 Lower mold holder 13 Mold transfer robot 15 Carriage 17 Rack body 19 Floor member 21 Side wall member 23 Side wall member 25 Ceiling member 27 Front opening 29 Rear opening 31 First upper sprocket 33 Second upper sprocket 35 Upper connecting shaft 37 First lower sprocket 39 Second lower sprocket 41 Lower connecting shaft 43 First travel chain 45 Second travel chain 47 Travel motor 55 Storage holder 57 First holder mounting groove 59 First holder locking groove 61 Second holder mounting groove 63 Second holder locking Groove 65 Separator 67 Cover member 69 Cover opening 71 Shutter

Claims (4)

In a mold storage rack for storing a large number of the molds, which is used for automatic replacement of molds with respect to a mold mounting portion of a table in a press brake,
It has a front opening for automatically changing the mold on the front side, and has a back opening for an operator to access and remove the mold on the back side, extending vertically A box frame rack body,
A first upper rotating wheel and a second upper rotating wheel, which are provided at the upper part in the rack body so as to be rotatable around a horizontal axis, and are separated in the rack width direction ;
A first lower rotating wheel and a second lower rotating wheel, which are provided at the lower part in the rack body so as to be rotatable around a horizontal axis, and are separated in the rack width direction ;
An endless first traveling member provided so as to be hung between the first upper rotating wheel and the first lower rotating wheel, and capable of circulating traveling in the circumferential direction;
An endless second traveling member provided so as to be hung between the second upper rotating wheel and the second lower rotating wheel, and capable of circulating in the circumferential direction;
It is provided along the circumferential direction so as to span between the first traveling member and the second traveling member, and extends in the rack width direction so that the mold can be attached and detached on one side in the short direction. A plurality of storage holders to hold;
The rack is provided in the main body, to extend the rack width direction to extend from between the first lower rotating wheel and the first upper rotating wheel between the second upper rotary wheel and said second lower rotating wheel And a separator configured to be surrounded by the plurality of storage holders when viewed from the rack width direction, and separating the inside of the rack body into the front opening side and the back opening side. Characteristic mold storage rack. The mold storage rack according to claim 1, wherein a holder mounting groove for fitting the shank portion of the mold is formed on one side of the mold holder in the short direction. The mold storage rack according to claim 1 or 2 , further comprising a shutter provided on a back side of the rack body and opening and closing the back opening of the rack body. 2. The separator according to claim 1 , wherein the separator has transparency so that the state of bending by the press brake or the state of automatic replacement of the mold can be observed from the back side of the rack body. Item 4. The mold storage rack according to any one of Items 3 to 3.

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