JP2008062278A - Multi-punch die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-punch die which is usable by moving it up and down in a fixed position and fitting it to a ram with which horizontally rotational dividing is possible. <P>SOLUTION: A fitting part to a ram 105 which is freely vertically moved in a punch press 101 is provided in a cylindrical plate pressing holder 3 provided with a part 5 to be engaged which is engaged with and fixed to a punch holding pawl 107 of the punch press 101 on the outer peripheral surface and also a punch holder 9 with which a plurality of punches 11A-11H are supported vertically movably are provided freely vertically movably and freely rotatably and a striker 47 for striking the punch which is divided and positioned in a prescribed position is provided so as to be freely movably up and down in one-piece with the punch holder 9. This striker 47 is provided so as to be fixed vertically in the assigned position of the plate pressing holder 3 to the rotation of the punch holder 9 and relatively rotatably to the punch holder 9. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a multi-punch die having a configuration in which, for example, a plurality of punches having different shapes and dimensions are provided on the same circle, and more specifically, a punch holder that supports the plurality of punches so as to move up and down is pressed. The present invention relates to a multi-punch mold that can be attached to and detached from a ram that can move up and down.

  For example, in a turret punch press as a punch press, the upper and lower turrets that are rotatable have a large number of punches and dies arranged on the same circle, and punches that are indexed and positioned at predetermined processing positions correspond to the above processing positions. The ram (striker) is provided so as to be movable up and down. And, for example, when using punches or dies having directionality like a die for punching long holes, the upper and lower turrets are arranged so that the directionality of the long holes can be changed variously. A rotating holder is provided that can be rotated horizontally and indexed to a predetermined position.

  Accordingly, it is possible to punch the plate-shaped workpiece by changing the direction of the punch and die having directionality, and it is not necessary to prepare punches and dies having the same shape and size but different directions. Is. In other words, since a single punch and die also serve as a plurality of punches and dies having different directions, relatively more punches and dies can be mounted on the upper and lower turrets. become.

As a mold that can use more small punches and dies having different shapes and dimensions, a multi-punch mold that is used by being mounted on the rotary holder has been developed (see Patent Documents 1 and 2).
JP-A-8-206748 Japanese Patent No. 2966302

  The multi-punch dies described in Patent Documents 1 and 2 have a configuration in which the multi-punch dies are attached to and detached from a cylindrical rotary holder that is provided on an upper turret in a punch press so as to be horizontally rotatable. A punch driver that has a plurality of small punches that can be moved up and down in a punch holder that is supported by the rotary holder so that it can only move up and down, and that can rotate relative to the punch holder. Further, a striker for hitting the punch is provided, and a powerful stripper spring for raising and returning the punch driver and the punch is provided.

  In this type of multi-punch mold, a punch driver is struck by a ram (striker) provided in a punch press, and the punch is struck through the punch driver. Therefore, for example, as described in JP-A-2002-143945, the punch is held by a piston rod as a ram that moves up and down, and the punch and the piston rod (ram) move up and down integrally. It is difficult to apply to a punch press.

  The present invention has been made in view of the above-described problems. In a punch press, a cylindrical presser holder having an engaged portion that is engaged with and fixed to a punch holding claw in a punch press on an outer peripheral surface. A striker with a mounting part for a ram that can be moved up and down, a punch holder that supports a plurality of punches so that it can move up and down, and that can be moved up and down, and that can rotate freely. The striker is fixed to a fixed position of the plate holder for rotation of the punch holder and is rotated relative to the punch holder. It is provided as possible.

  Further, in the multi-punch die according to the present invention, the striker is rotatably provided between the punch holder and a head body integrally provided on the upper portion of the punch holder. The striker is provided with a locking projection that is movably engaged with a locking groove formed on the inner peripheral surface of the plate pressing holder.

  Further, in the multi-punch die according to the present invention, a portion where the striker strikes the punch is formed thick, and inclined surfaces are formed on both sides of the thick wall, and the punch head is formed on the punch head. A tapered surface is formed.

  According to the present invention, in a punch press of a type in which a punch die is attached to and detached from a ram that can move up and down at a predetermined position and can be rotated horizontally, a multi-punch die having a plurality of punches on the same circle A die is attached to the ram, and a desired punch can be indexed and positioned at a predetermined position for punching.

  Hereinafter, a multi-punch mold according to an embodiment of the present invention will be described with reference to the drawings. First, in order to facilitate understanding, a configuration of a main part in a punch press of a type in which the multi-punch mold is mounted is described. A brief description will be given.

  A punch press 101 for mounting the multi-punch die 1 according to the embodiment of the present invention has the same configuration as the punch press described in JP-A-2002-143945. The punch press 101 includes a cylindrical support body 103 that is integrally fixed to a frame (not shown) of the punch press 101. The support body 103 is moved up and down by an elevating actuator such as a hydraulic cylinder. An elevating rod 105 as a ram to be moved is provided so as to be movable up and down.

  The elevating rod 105 is configured to be rotated horizontally by an indexing motor (not shown) such as a servo motor so that a desired position can be rotated to a predetermined position and indexed. In order to hold the multi-punch die 1 in the lifting rod 105, for example, a gripping claw 107 that can be opened and closed like a chuck claw in a collet chuck is provided. The elevating rod 105 is provided with a chuck cylinder (not shown) for moving to a position for opening and closing.

  Further, on the outside of the support body 103, a plate presser support block 111 having a punch holding claw 109 for engaging and fixing a plate presser holder in the multi-punch die 1 at its lower end portion is provided only for vertical movement. It has been. The plate presser support block 111 is configured to move up and down separately from the lifting rod 105 by a lifting actuator (not shown) such as a fluid pressure cylinder mounted on a frame of the punch press 101.

  The configuration of the punch press 101 has the same effect as the configuration of the punch press described in Japanese Patent Application Laid-Open No. 2002-143945, and therefore a more detailed description of the punch press 101 is omitted.

  Referring to FIGS. 1 and 2, a multi-punch die 1 according to an embodiment of the present invention is provided with a cylindrical plate presser holder 3. A groove-like engaged portion 5 that is engaged and fixed to the punch holding claw 109 provided in the plate pressing support block 111 in the punch press 101 is formed on the outer peripheral surface of the plate pressing holder 3. The engaged portions 5 are provided so as to form a pair on the opposite side of the outer peripheral surface of the plate pressing holder 3. A cylindrical sub-holder 7 is integrally attached to the lower part of the plate holder 3. Since the sub-holder 7 is integral with the plate holder 3, it can be regarded as a part of the plate holder 3.

  Inside the plate holder 3 (sub-holder 7), a punch holder 9 is fitted and housed so as to be relatively vertically movable and relatively rotatable. A plurality of punches 11A to 11H (see FIG. 2) are supported on the same circle near the outer periphery of the punch holder 9 so as to be movable up and down. More specifically, a plurality of mounting holes 13 penetrating in the vertical direction are formed on the same circle in the punch holder 9, and the punches 11 </ b> A to 11 </ b> H are inserted into the mounting holes 13 so as to freely move up and down. It is.

  Small punch blade portions 15 are provided below the punches 11A to 11H, respectively, and a large diameter punch head 17 provided above the punches 11A to 11H has a tapered surface 17T having a small diameter at the upper end side. It is formed. The punches 11 </ b> A to 11 </ b> H are directed upward between the ring member 19 fitted and abutted to the lower part of the punch head 17 and the bottoms of the holes 21 formed at a plurality of locations around the mounting holes 13. An elastic member 23 such as a coil spring biased so as to be always lifted is elastically mounted.

  When punching a plate-shaped workpiece (not shown) by the punches 11A to 11H, a plate presser 25 for pressing and fixing the workpiece to a die (not shown) corresponds to each of the punches 11A to 11H. Is provided. More specifically, a disc-shaped holder plate 27 is detachably attached to the lower portion of the sub-holder 7 via a plurality of balls 29. The ball 29 can be projected and retracted with respect to the inner peripheral surface of the sub-holder 7, and is urged so as to protrude inward by an elastic member such as a coil spring. A circumferential groove 31 is formed on the outer peripheral surface of the holder plate 27 so that the ball 29 can be freely engaged and disengaged.

  The plate retainers 25 corresponding to the respective punches 11A to 11H are attached to the holder plate 27 at positions corresponding to the respective punches 11A to 11H. Further, at a plurality of locations on the upper surface of the holder plate 27, guide pins 35 are vertically provided so as to be vertically movable in guide holes 33 formed in the punch holder 9.

  A fixed shaft portion 37 protrudes upward in the center of the upper surface of the punch holder 9, and an annular head body 39 is attached to the outside of the fixed shaft portion 37. A gripped stud 43 having a gripped portion 41 gripped by the gripping claws 107 is integrally screwed to the fixed shaft portion 37. The gripped stud 43 restricts the head main body 39 from moving upward and prevents the head main body 39 from coming out of the fixed shaft portion 37. A key 45 detachably attached to a key groove 105 </ b> K formed on the lower end surface of the elevating rod 105 is attached to a part of the outer peripheral surface of the head body 39.

  Since the gripped stud 43, the head main body 39, and the like are integrally attached to the punch holder 9, it can be regarded as a part of the punch holder 9.

  In order to lower the punches 11 </ b> A to 11 </ b> H supported by the punch holder 9 so as to move up and down against the urging force of the elastic member 23, the punch holder 9 is placed between the upper surface of the punch holder 9 and the lower surface of the head body 39. In addition, an annular striker 47 is relatively rotatably provided. At a predetermined position of the striker 47, there is provided a locking projection 51 that is freely engaged only in a vertical movement in a vertical locking groove 49 formed on the inner peripheral surface of the plate pressing holder 3.

  In the striker 47, the portion corresponding to the locking protrusion 51 is formed in the thick portion 53 at a portion where the desired punch 11A indexed and positioned at a predetermined position is pressed. In other words, in the annular striker 47, the portions other than the thick portion 53 are formed as thin portions that are thin on the upper side, and the thin portion from the thin portion to the thick portions are formed on both sides of the thick portion 53. An inclined surface 55 (see FIG. 2) that is inclined so that the lower surface side of 53 is lowered is formed.

  Note that a die die (not shown) corresponding to the multi-punch die 1 having the above-described configuration is provided with a plurality of dies corresponding to the punches 11A to 11H, and is used as a ram in the punch press 101. It is supported by a support base (not shown) provided facing the lifting rod 105. The support base can be moved up and down by the operation of an actuator similarly to the elevating rod 105 and is horizontally rotated by an index motor (not shown) so that a desired die can be indexed and positioned at a predetermined position. It is. In addition, since the structure which moves the said support stand up and down and performs a rotation index is the structure similar to the structure described in the said Unexamined-Japanese-Patent No. 2002-143945, more detailed description is abbreviate | omitted.

  In the configuration as described above, when the multi-punch die 1 is mounted on the punch press 101, in the normal state, the lifting rod 105 as a ram is relatively raised with respect to the plate presser support block 111. The lower end of the punch blade 15 in each of the punches 11A to 11H is in a state of being immersed in the lower surface of the plate retainer 25 (in FIG. 1, the lifting rod 105 is lowered and indexed to a predetermined position. The state where the punch blade portion 15 of the positioned punch 11A protrudes from the lower surface of the plate retainer 25 is shown).

  That is, in the normal state, the upper surface of the holder plate 27 and the lower surface of the punch holder 9 are largely separated from each other, and the lower end portion of the punch blade portion 15 in each of the punches 11 </ b> A to 11 </ b> H is positioned above the lower surface of the plate presser 25. In an immersive state.

  In the configuration as described above, in order to perform punching processing on a plate-shaped workpiece, the lifting rod 105 in the punch press 101 is horizontally rotated so that a desired punch (for example, 11A) corresponds to the thick portion 53 in the striker 47. In addition to indexing and positioning at the position, the support table supporting the die mold is rotated horizontally to position the die corresponding to the punch 11A at a position below the punch 11A.

  As described above, when the elevating rod 105 is rotated horizontally, the plate press holder 3 and the sub holder 7 supported by the plate press support block 111 are positioned at fixed positions without rotating, and the plate press holder The striker 47 engaged with the locking protrusions 51 in the locking grooves 49 formed in 3 is in a stopped state without rotating. Therefore, the thick part 53 in the striker 47 is always located at a predetermined position. Then, the desired punch 11A is indexed and positioned below the thick portion 53.

  Thereafter, when the plate retainer support block 111 is lowered, the plate retainer holder 3 and the sub-holder 7 are lowered, and the plate-like workpiece is removed from the die by the plate retainer 25 provided on the holder plate 27 supported on the lower portion of the sub-holder 7. Press and fix to the upper surface. Then, when the elevating rod 105 as a ram is lowered, the punch 11A is integrally lowered through the head main body 39 and the thick portion 53 of the striker 47, and the punch blade portion 15 in the punch 11A is moved to the plate presser 25. Projecting downward (in the state shown in FIG. 1), the workpiece is punched.

  Thereafter, when the lifting rod 105 is raised, the head main body 39 and the punch holder 9 are raised integrally, and the punch blade portion 15 in the punch 11A is pulled out from the workpiece. Then, after the punch blade portion 15 is pulled out of the workpiece as described above, the workpiece pressing support block 111 is lifted to release the workpiece from being fixed by the plate retainer 25, and the workpiece is positioned in the horizontal direction. In addition, the support base corresponding to the lifting rod 105 can be rotated, and the die can be indexed and positioned at a predetermined position corresponding to a desired punch (for example, 11B).

  When the elevating rod 105 is rotated and a desired punch (for example, 11B) is indexed and positioned below the thick portion 53 of the striker 47, inclined surfaces 55 are formed on both sides of the thick portion 53, respectively. In addition, since the punch head 17 of each of the punches 11A to 11H is formed with a tapered surface 17T, the punch 11A to 11H can be easily indexed and positioned below the thick portion 53. It is.

  When punching the workpiece with a desired punch indexed and positioned at a predetermined position (for example, 11B), the other punches 11A and 11C to 11H correspond to the thin portions in the striker 47, and the biasing force of the elastic member 23 Is in a raised state. That is, the other punches are in a state of being raised higher than the punch 11B indexed and positioned at the position of the thick portion 53 in the striker 47. Therefore, when the workpiece is punched by the punch 11B at a predetermined position, There is no such thing as punching.

  As already understood, the multi-punch die 1 according to the present embodiment is used by being mounted on a ram (elevating rod 105) that moves up and down at a fixed position in a punch press and can be fixedly indexed horizontally. It is something that can be done. Since the workpiece is punched by indexing and positioning a desired punch at a predetermined fixed position, the position for punching the workpiece does not change even if the type of punch changes. The position is always constant, and the workpiece can be easily positioned with respect to the machining position.

  By the way, a plurality of dies (for example, die A, die A, etc.) provided with die holes having different diameters to adjust the clearance corresponding to the plate thickness of the workpiece with respect to, for example, the punch 11A provided with the punch blade portion 15 having a predetermined diameter. A die B (not shown) is provided in the die mold, and a support that supports the die mold is rotated, and the die A or die B is indexed and positioned with respect to the punch 11A to perform workpiece punching processing. It is also possible. On the contrary, it is also possible to variously change the clearance between the punch blade portion and the die hole by corresponding a plurality of punches to one die.

  That is, although the dimensions are different, the multi-punch die 1 includes a plurality of punches having similar cross-sectional shapes (for example, circular shapes) of the punch blade portion 15, and die holes having similar shapes to the cross-sectional shape of the punch blade portion 15. A plurality of dies provided are provided in a mold, and a desired punch is indexed and positioned at a predetermined position, and a desired die is positioned corresponding to the punch, thereby providing a gap between the punch blade portion 15 and the die hole. The clearance can be adjusted according to the thickness of the workpiece. Therefore, when the thickness of the workpiece changes variously, punching can be performed efficiently and with high accuracy.

It is sectional explanatory drawing of the multi punch metal mold | die which concerns on embodiment of this invention. It is plane explanatory drawing of the multi punch metal mold | die which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Multi punch metal mold | die 3 Plate press holder 5 Engagement part 7 Sub holder 9 Punch holder 11A-H Punch 15 Punch blade part 17 Punch head 17T Tapered surface 25 Plate presser 27 Holder plate 37 Fixed shaft part 39 Head main body 41 Holding part 43 Stud to be gripped 47 Striker 49 Locking groove 51 Locking protrusion 53 Thick part 55 Inclined surface 101 Punch press 103 Support body 105 Lifting rod (ram)
107 gripping claw 109 punch holding claw 111 plate presser support block

Claims (3)

  A cylindrical presser holder having an engaged portion that is engaged and fixed to a punch holding claw in a punch press on an outer peripheral surface, a mounting portion to a ram that can be moved up and down in the punch press, and a plurality of punches The punch holder is supported so that it can be moved up and down, and can be moved up and down and rotated, and a striker for hitting the punch that is indexed and positioned at a predetermined position is provided integrally with the punch holder so as to be movable up and down. The multi-punch die, wherein the striker is fixed to a fixed position of the plate press holder with respect to the rotation of the punch holder and is rotatable relative to the punch holder.   2. The multi-punch die according to claim 1, wherein the striker is rotatably provided between the punch holder and a head body integrally provided on an upper portion of the punch holder. Is provided with a locking projection movably engaged with a locking groove formed on the inner peripheral surface of the plate pressing holder.   The multi-punch die according to claim 1 or 2, wherein a portion where the striker strikes the punch is formed thick, inclined surfaces are formed on both sides of the thick wall, and the head of the punch A multi-punch mold characterized in that a taper surface is formed on.

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