JP2020075289A - Metal mold, die metal mold, metal mold set, and sheet metal processing method - Google Patents

Abstract

To prevent a part of a product from sneaking under a residual material, and to stably carry out the product by a product carrying-out device.SOLUTION: A die metal mold 12 comprises: a die body 30; a die chip 34 provided on a top face of the die body 30; and a die ejector 36 which is so provided on an upper side of the die body 34 as to be capable of elevating, and in which a die insertion hole 36h for insertion of the die chip 34 is formed. A push-up part 36p, which pushes up a product part Wm of a sheet metal W relatively to a residual material part Wr after cutting is performed for a portion excluding a part Ta of a contour T of the product part Wm, is provided on a top face of the die ejector 36. A tip of the die chip 34 is provided with a projection formation part 34c for forming a lock projection Wp, which can be locked on a reverse face of the pushed-up product part Wm, on a cut surface Wrs of the residual material part Wr of the sheet metal.SELECTED DRAWING: Figure 4C

Description

  The present invention relates to a die, a die die, a die set, and a sheet metal working method.

  The laser processing machine or the composite processing machine cuts the sheet metal on the basis of the product shape data to manufacture a product having a predetermined shape. The product manufactured by the cutting process is sucked by a plurality of suction pads in a product unloading device as shown in, for example, Patent Documents 1 to 3, and is conveyed to a predetermined place.

  As prior arts related to the present invention, there are those shown in Patent Documents 4 to 7 in addition to Patent Documents 1 to 3.

JP 2001-239391 A JP 2001-105064 A JP-A-8-243964 JP, 2008-79511, A JP, 2017-131915, A JP, 2007-75889, A JP, 2004-268101, A

  By the way, after cutting the sheet metal with a laser processing machine etc., when the product is sucked and carried out by a plurality of suction pads in the product carry-out device, a part of the product is below the non-product residual material. May sneak into. When the product has an elongated shape portion or a cutout portion, these portions easily sink under the residual material. When the thickness of the sheet metal is 1.0 mm or less, a part of the product easily sinks under the residual material. Then, when the product is sucked by the plurality of suction pads in the product unloading device in a state where a part of the product sunk under the residual material, a part of the product is caught by the residual material, which hinders the unloading of the product. That is, there is a problem that it is not easy to prevent a part of the product from slipping under the residual material and to stably carry out the product by the product unloading device.

  Therefore, in order to solve the above-mentioned problems, the present invention is capable of holding a product in a state of being pushed up from a residual material after performing a cutting process on a sheet metal, a die, a die die, a die set, and a sheet metal processing. The purpose is to provide a method.

  The die according to the first embodiment includes a push-up portion for pushing up the product portion relative to the remaining material portion after performing a cutting process on a portion except a part of the contour of the product portion of the sheet metal. A projection forming portion for forming a locking projection that can be locked on the back surface of the pushed-up product portion on the cut surface of the residual material portion of the sheet metal.

  In the first embodiment, the protrusion forming portion coins a recess in the vicinity of the cut surface on the back surface of the residual material portion, so that the locking projection is provided on the cut surface of the residual material portion by a part of sheet metal flowing in. It may be a coining portion to be formed.

  A die die according to a second embodiment is provided with a die body, a die chip provided on an upper surface of the die body, and a die insertion hole through which the die chip is inserted, the die insertion hole being provided on the upper side of the die body so as to be able to move up and down. And a diet ejector. A push-up portion is provided on the upper surface of the die ejector to push up the product portion relative to the residual material portion after cutting the portion of the sheet metal except for a part of the contour of the product portion. In addition, a projection forming portion is formed at the tip of the die chip to form a locking projection that can be locked on the back surface of the pushed-up product portion on the cut surface of the remaining material of the sheet metal.

  A die die according to a third embodiment is provided with a die body, a die chip provided on an upper surface of the die body, and a die insertion hole through which the die chip is inserted, the die insertion hole being provided on an upper side of the die body so as to be vertically movable. And a diet ejector. A push-up portion is provided on the upper surface of the die body for pushing up the product portion relative to the remaining material portion after cutting the portion of the sheet metal except for a part of the contour of the product portion. , A cutout for inserting the push-up portion is formed in the die ejector, and a locking projection that can be locked to the back surface of the pushed-up product portion is formed at the tip end portion of the die chip of the remaining material portion of the sheet metal. A protrusion forming portion for forming on the cut surface is provided.

  In the second embodiment and the third embodiment, the protrusion forming portion is provided on the cut surface of the residual material portion by coining a recess in the vicinity of the cut surface of the rear surface of the residual material portion to allow a part of the sheet metal to flow in. It may be a coining portion that forms the locking protrusion.

  A die set according to a fourth embodiment is a die die according to the second or third embodiment, a punch body for pressing a sheet metal from above, and a punch chip provided at a lower end portion of the punch body. And a punch die provided with. A step portion is formed on the lower surface of the punch tip to allow the pushed-up product portion to escape.

  A die set according to a fifth embodiment is a die die including a die body and a die ejector provided on the upper side of the die body so as to be able to move up and down, and a cylindrical punch having a punch insertion hole formed at a lower end portion. The punch die includes a guide, a punch body that can be lifted and lowered inside the punch guide, and a punch tip that is provided at a lower end portion of the punch body and that can be inserted into the punch insertion hole. A push-up portion for pushing up the product portion is provided on the upper surface of the die body after cutting the portion of the contour of the product portion of the sheet metal, and the push-up portion is provided on the die ejector. For forming a die insertion hole for inserting a die, and for forming a locking projection at the tip of the punch tip, which can be locked to the back surface of the pushed product part, on the cut surface of the remaining material of the sheet metal. The protrusion forming part is formed.

  In the fifth embodiment, the pushing-up portion projects toward the upper surface of the die ejector by the lowering operation of the die ejector, and presses the residual material portion at a position adjacent to the punch insertion hole on the lower surface of the punch guide. A rim portion (projection portion) may be provided. In this case, the protrusion amount of the rim portion with respect to the lower surface of the punch guide is set to be larger than the maximum protrusion amount of the push-up portion with respect to the upper surface of the die ejector.

  In the fourth embodiment and the fifth embodiment, the projection forming portion is provided on the cut surface of the residual material portion by coining a recess in the vicinity of the cut surface of the surface of the residual material portion to allow a part of sheet metal to flow in. It may be a coining portion that forms the locking protrusion.

  In the sheet metal working method according to the sixth embodiment, a cutting process is performed on a portion of the sheet metal except a part of the contour of the product portion, the product portion is pushed up, and the back surface of the pushed product portion can be locked. A locking projection is formed on the cut surface of the remaining material of the sheet metal, and then a part of the contour of the product portion is cut.

  In the sixth embodiment, a recess is coined in the vicinity of the cut surface on the back surface or the front surface of the residual material portion, so that the locking protrusion is formed on the cut surface of the residual material portion due to inflow of a part of the sheet metal. Good.

  According to the present invention, it is possible to prevent a part of the product from slipping under the residual material, and to stably carry out the product by the product carrying-out device.

FIG. 1 is a cross-sectional view of a mold set according to the first embodiment. FIG. 2 is a schematic side view of the combined processing machine. FIG. 3A is a cross-sectional view of the die mold according to the first embodiment. FIG. 3B is an enlarged plan view of the die mold according to the first embodiment. FIG. 4A is a cross-sectional view illustrating the operation of the mold set according to the first embodiment. FIG. 4B is a cross-sectional view illustrating the operation of the mold set according to the first embodiment. FIG. 4C is a cross-sectional view illustrating the operation of the mold set according to the first embodiment. FIG. 4D is a cross-sectional view illustrating the operation of the mold set according to the first embodiment. FIG. 5A is a plan view of a sheet metal to be processed by the sheet metal processing method according to the first embodiment. FIG. 5B is a plan view of the sheet metal for explaining the sheet metal processing method according to the first embodiment. FIG. 5C is a plan view of the sheet metal for explaining the sheet metal processing method according to the first embodiment. FIG. 5D is a plan view of the sheet metal for explaining the sheet metal processing method according to the first embodiment. FIG. 5E is an enlarged cross-sectional view taken along the line AA in FIGS. 5C and 5D. FIG. 6 is a cross-sectional view of the mold set according to the second embodiment. FIG. 7A is a sectional view of a die mold according to the second embodiment. FIG. 7B is an enlarged plan view of the die mold according to the second embodiment. FIG. 8A is a cross-sectional view illustrating the operation of the mold set according to the second embodiment. FIG. 8B is a cross-sectional view illustrating the operation of the mold set according to the second embodiment. FIG. 8C is a cross-sectional view illustrating the operation of the mold set according to the second embodiment. FIG. 8D is a cross-sectional view illustrating the operation of the mold set according to the second embodiment. FIG. 8E is a cross-sectional view illustrating the operation of the mold set according to the second embodiment. FIG. 9 is a cross-sectional view of the mold set according to the third embodiment. FIG. 10A is a cross-sectional view of a die mold according to the third embodiment. FIG. 10B is an enlarged plan view of a die mold according to the third embodiment. FIG. 11A is a sectional view of a punch die according to the third embodiment. FIG. 11B is an enlarged bottom view of the punch die according to the third embodiment. FIG. 12A is a cross-sectional view illustrating the operation of the mold set according to the third embodiment. FIG. 12B is a cross-sectional view illustrating the operation of the mold set according to the third embodiment. FIG. 12C is a sectional view for explaining the operation of the mold set according to the third embodiment. FIG. 12D is a cross-sectional view illustrating the operation of the mold set according to the third embodiment. FIG. 13A is a plan view of a sheet metal to be processed by the sheet metal processing method according to the fourth embodiment. FIG. 13B is a plan view of the sheet metal for explaining the sheet metal processing method according to the fourth embodiment. FIG. 13C (a) is a plan view of a sheet metal for explaining the sheet metal processing method according to the fourth embodiment. FIG. 13C (b) is a cross-sectional view taken along the line BB in FIG. 13C (a), and illustrates the sheet thickness of the sheet metal in an exaggerated manner. FIG. 13D is a plan view of the sheet metal for explaining the sheet metal processing method according to the fourth embodiment. FIG. 13E is a plan view of the sheet metal for explaining the sheet metal processing method according to the fourth embodiment. FIG. 13F (a) is a cross-sectional view taken along the line C-C in FIGS. 13D and 13E, and shows the plate thickness of the sheet metal in an exaggerated manner. FIG. 13F (b) is a cross-sectional view taken along the line D-D in FIGS. 13D and 13E, and shows the plate thickness of the sheet metal in an exaggerated manner. FIG. 14A is a cross-sectional view showing another embodiment of the coining portion in the die mold according to the first and second embodiments, in which the plate thickness of the sheet metal is exaggerated. FIG. 14B is a cross-sectional view showing another embodiment of the coining portion in the die mold according to the first embodiment and the second embodiment, in which the plate thickness of the sheet metal is exaggerated. FIG. 15A is a side view showing another embodiment of the regulating projection used in the sheet metal working method according to the fourth embodiment, in which the sheet thickness of the sheet metal is exaggerated. FIG. 15B is a cross-sectional view showing another embodiment of the restricting protrusion used in the sheet metal working method according to the fourth embodiment, in which the sheet thickness of the sheet metal is exaggerated.

  Hereinafter, the first to fourth embodiments will be described with reference to the drawings.

  In the specification and claims of the present application, the term “die” includes a die die, a punch die, and a die set including the die die and the punch die. The term “provided” is intended to include not only being directly provided but also indirectly being provided and formed through another member. In the specification of the present application, the "X-axis direction" refers to the horizontal direction that is the left-right direction, and the "Y-axis direction" refers to the front-back direction that is the horizontal direction that is orthogonal to the X-axis direction. “And / or” is meant to include either or both of the two. “Axial center” is the axial center of a die or punch die. "Diameter direction" means the diametrical direction of a die mold or a punch mold. In the drawings, "U" indicates upward and "D" indicates downward.

(First embodiment)
As shown in FIGS. 1 and 2, the mold set (mold unit) 10 according to the first embodiment includes a die mold 12 and a punch mold 14. The die die 12 is detachably attached to a lower turret 18 as a lower attachment base in the multi-tasking machine 16 via a cylindrical lower rotation holder (not shown). The punch die 14 is detachably attached to an upper turret 20 as an upper attachment base in the multi-tasking machine 16 via a cylindrical upper rotation holder (not shown).

  Here, the composite processing machine 16 performs punching (including punching and coining) and laser processing on the sheet metal W. The multi-tasking machine 16 has a known configuration, as shown in Patent Documents 4 and 5, for example. The composite processing machine 16 includes a striker 22 that presses the punch die 14 indexed to the punching position PP, and a laser processing head 24 that irradiates a laser beam (laser light) downward. The laser processing head 24 is movable in the Y-axis direction and is optically connected to a laser oscillator (not shown) such as a fiber laser oscillator that outputs a laser beam. The multi-tasking machine 16 moves the sheet metal W in the X-axis direction and / or Y with respect to the Y-axis moving mechanism 26 that moves the laser processing head 24 in the Y-axis direction and the punching position PP and the irradiation position BP of the laser processing head 24. A sheet metal moving mechanism 28 for moving in the axial direction is provided. The irradiation position BP of the laser processing head 24 is moved in the X-axis direction and the Y-axis direction relative to the sheet metal W by the Y-axis moving mechanism 26 and the sheet metal moving mechanism 28.

  The lower rotary holder is configured to be rotatable by a lower index mechanism shown in Patent Documents 6 and 7, for example. In other words, the die die 12 rotates integrally with the lower rotation holder about the axis C by the lower index mechanism. Similarly, the upper rotation holder is configured to be rotatable by the upper index mechanism shown in Patent Documents 6 and 7, for example. In other words, the punch die 14 rotates integrally with the lower rotation holder about the axis C by the upper index mechanism.

  Subsequently, a specific configuration of the die die 12 will be described.

  As shown in FIGS. 1, 3A, and 3B, the die mold 12 includes a cylindrical die body 30, and the die body 30 is detachably attached to the lower turret 18 via a lower rotation holder. .. The die body 30 has a key 32 provided on the outer peripheral surface thereof and a key groove (not shown) formed on the inner peripheral surface of the lower rotary holder so that the die body 30 cannot rotate with respect to the lower rotary holder. It is configured. Further, the die body 30 has a plurality of (only one is shown) stepped first guide holes 30h. A second guide hole 30b is formed between the first guide holes 30h in the die body 30. The first guide holes 30h and the second guide holes 30b are alternately arranged along the circumferential direction of the die body 30.

  A plate-shaped die chip 34 is formed in the center of the upper surface of the die body 30, and the die chip 34 extends in the diametrical direction. The die chip 34 may be detachably attached to the die body 30.

  A disc-shaped die ejector 36 that supports the sheet metal W is provided on the upper side of the die body 30 so as to be movable up and down (movable in the vertical direction). Further, a die insertion hole 36h for inserting the die chip 34 is formed in the center of the die ejector 36, and the die insertion hole 36h extends in the diametrical direction. A connecting bolt 38 is provided in each first guide hole 30h of the die body 30 so as to be vertically movable and non-removable, and an upper end portion of each connecting bolt 38 is fixed to the die ejector 36. A slide pin 40 is vertically movable in each of the second guide holes 30b of the die body 30, and an upper end portion of each slide pin 40 is fixed to the die ejector 36. In other words, the die ejector 36 is provided on the upper side of the die body 30 so as to be movable up and down and non-separable via the plurality of (only one shown) connecting bolts 38 and the plurality of (only one shown) slide pins 40. There is.

  A mounting bolt 42 is provided at the center of the lower surface of the die body 30. A support ring 44 that supports the lower end portions (lower end surfaces) of the plurality of slide pins 40 is provided on the mounting bolt 42 so as to be able to move up and down. An annular spring seat 46 is provided at the lower end of the mounting bolt 42. Between the support ring 44 and the spring seat 46 on the outer peripheral surface side of the mounting bolt 42, a coil spring as a biasing member that biases the die ejector 36 upward through the support ring 44 and the plurality of slide pins 40. 48 are provided.

  Subsequently, a specific configuration of the punch die 14 will be described.

  As shown in FIG. 1, the punch die 14 includes a punch body 50 that presses the sheet metal W from above. The punch body 50 can be lifted and detached from the upper turret 20 via an upper rotation holder. It is installed. The punch body 50 is supported by a plurality of lifter springs (not shown) provided at appropriate positions on the upper turret 20. The punch body 50 is punched with respect to the upper rotary holder by the fitting action of an upper key (not shown) provided on the inner peripheral surface of the upper rotary holder and a key groove 50g formed on the outer peripheral surface of the punch body 50. The body 50 is configured to be non-rotatable.

  A punch tip 52 is detachably attached to the lower end of the punch body 50. A key groove 52g is formed on the outer peripheral surface of the punch tip 52, and the key groove 52g is continuous with the key groove 50g of the punch body 50. The key groove 50g of the punch tip 52 can be fitted with the upper key. A punch head 54 is provided at the upper end of the punch body 50, and the punch head 54 is pressed by the striker 22 from above. The punch tip 52 may be integrally formed on the lower end portion of the punch body 50, instead of being detachably provided on the lower end portion of the punch body 50.

  Subsequently, characteristic portions of the die die 12 and the punch die 14 will be described.

  As shown in FIGS. 1 and 3A to 4B, a position adjacent to the die insertion hole 36h on the upper surface of the die ejector 36 is a portion except a portion Ta (see FIG. 5A) of the contour T of the product portion Wm of the sheet metal W. A push-up portion 36p for pushing up the product portion Wm relative to the residual material portion (non-product portion) Wr by the thickness of the sheet metal W after cutting is performed. The push-up portion 36p projects from the upper surface of the die ejector 36 and extends in a direction parallel to the die insertion hole 36h. The product part Wm is a part of the sheet metal W and becomes a product M (see FIG. 5D). The residual material portion Wr is a part of the sheet metal W and becomes the residual material R (see FIG. 5D). Further, on the lower surface of the punch tip 52, a stepped portion 52s for letting the pushed product portion Wm escape is formed. A step amount β of the step portion 52s with respect to the lower surface of the punch tip 52 is set to be larger than a protrusion amount α of the push-up portion 36p with respect to the upper surface of the die ejector 36.

  As shown in FIG. 1, FIG. 3A, FIG. 3B, FIG. 4C, and FIG. 4D, the tip of the die chip 34 has a V-shaped cross section in the vicinity of the cut surface of the rear surface of the residual material Wr of the sheet metal W. A coining portion 34c for coining (coining) the recess Wd is formed. The coining portion 34c forms the recess Wd in the vicinity of the cut surface Wrs (see FIG. 5E) on the back surface of the residual material portion Wr of the sheet metal W, so that the residual material portion Wr is cut by a part of the sheet metal W flowing (expansion). A linear locking protrusion Wp is formed on the surface Wrs. The locking projection Wp extends in the same direction as the recess Wd, and can be locked to the back surface of the product portion Wm pushed up by the push-up portion 36p. The coining portion 34c corresponds to a protrusion forming portion for forming a linear locking protrusion Wp on the cut surface Wrs of the residual material portion Wr. The coining portion 34c is located on the axis C of the die die 12 and extends in the diametrical direction (direction parallel to the pushing-up portion 36p). The coining portion 34 c projects from the upper surface of the die ejector 36 when the die ejector 36 descends while resisting the biasing force of the coil spring 48.

  The push-up portion 36p and the coining portion 34c can be changed in any direction by the lower index mechanism and the upper index mechanism while keeping the parallel directions.

  Subsequently, the operational effects of the mold set 10 according to the first embodiment, including the operation of the mold set 10 according to the first embodiment, will be described with reference to FIGS. 1, 2, and 4A to 4D.

  The sheet metal moving mechanism 28 moves the sheet metal W in the X-axis direction and / or the Y-axis direction with respect to the punching position PP. Thereby, as shown in FIG. 4A, the sheet metal W is positioned such that the product portion Wm is located above the push-up portion 36p and the residual material portion Wr is located above the coining portion 34c.

  After the sheet metal W is positioned, the punch head 54 is pressed from above by the striker 22 to lower the punch body 50 while resisting the biasing force of the plurality of lifter springs. Then, as shown in FIG. 4B, the punch tip 52 presses the residual material portion Wr of the sheet metal W from above, and the push-up portion 36p moves the product portion Wm of the sheet metal W relative to the residual material portion Wr. Push up by the thickness of W.

  Further, while the punch chip 52 presses the remaining material portion Wr of the sheet metal W from above, the lowering operation of the punch body 50 lowers the die ejector 36 against the biasing force of the coil spring 48. Then, as shown in FIG. 4C, the coining portion 34c projects upward with respect to the upper surface of the die ejector 36, and the recess Wd is formed in the vicinity of the cut surface Wrs (see FIG. 5E) on the back surface of the residual material portion Wr of the sheet metal W. Form. As a result, part of the sheet metal W flows into the cut surface Wrs of the residual material portion Wr of the sheet metal W and the back surface of the product portion Wm pushed up by the sheet thickness of the sheet metal W (by the pushing portion 36p). A linear locking protrusion Wp that can be stopped can be formed.

  After that, the pressed state of the punch head 54 by the striker 22 is released. Then, as shown in FIG. 4D, the punch body 50 is raised by the urging force of the plurality of lifter springs, and the punch die 14 returns to the original state. Further, the die ejector 36 is lifted by the urging force of the coil spring 48, and the die die 12 returns to the original state.

  That is, according to the configuration of the mold set 10 according to the first embodiment, after the cutting process is performed on a portion of the contour T of the product portion Wm of the sheet metal W except for a portion Ta (see FIG. 5A), the remaining portion of the sheet metal W is left. On the cut surface Wrs of the material portion Wr, it is possible to form a linear locking protrusion Wp that can be locked to the back surface of the product portion Wm pushed up by the thickness of the sheet metal W. Therefore, after cutting the sheet metal W, the product M can be held in a state of being pushed up (floating state) from the residual material R by the thickness of the sheet metal W.

  Therefore, according to the mold set 10 according to the first embodiment, it is possible to prevent a part of the product M from sneaking into the lower side of the residual material R by the product unloading device (see Patent Documents 1 to 3). The product M can be stably carried out.

  Next, the sheet metal working method according to the first embodiment will be described with reference to FIGS. 1, 2, and 5A to 5E.

  As shown in FIGS. 2 and 5A, while irradiating the laser beam from the laser processing head 24 downward, the irradiation position BP of the laser processing head 24 is set to the sheet metal W by the Y-axis moving mechanism 26 and the sheet metal moving mechanism 28. The product portion Wm is moved along the contour T. Then, as shown in FIG. 5B, a part of the contour T of the product portion Wm of the sheet metal W excluding a part (final cutting portion) Ta is subjected to a cutting process, and the sheet metal W is slit along the contour T of the product portion Wm. S can be formed.

  After cutting the portion of the contour T of the product portion Wm of the sheet metal W excluding the final cut portion Ta, the sheet metal moving mechanism 28 positions the sheet metal W and changes the direction of the push-up portion 36p and the coining portion 34c. Meanwhile, the mold set 10 is operated as described above. Then, as shown in FIGS. 5C and 5E, linear locking protrusions Wp can be formed at a plurality of positions on the cut surface Wrs of the residual material portion Wr of the sheet metal W.

  After that, while irradiating the laser beam from the laser processing head 24 downward, the irradiation position BP of the laser processing head 24 is moved by the Y-axis moving mechanism 26 along the final cut portion Ta of the contour Ta of the product portion Wm of the sheet metal W. To move. Then, as shown in FIGS. 5D and 5E, the final cutting portion Ta of the contour T of the product portion Wm of the sheet metal W is subjected to a cutting process, and the sheet metal W is formed along the final cutting portion Ta of the contour T of the product portion Wm. The slit S is formed. Thereby, the product M having the elongated shape portion Mt and the cutout portion Mn can be manufactured from the sheet metal W.

  That is, according to the sheet metal working method of the first embodiment, as described above, after the cutting work is performed on a portion of the contour T of the product portion Wm of the sheet metal W except the part Ta, the remaining material portion of the sheet metal W is cut. The linear locking protrusions Wp can be formed at a plurality of positions on the cut surface Wrs of Wr. Therefore, after cutting the sheet metal W, the product M can be held in a state of being pushed up (floating state) from the residual material R by the thickness of the sheet metal W.

  Therefore, the sheet metal working method according to the first embodiment has the same effects as those of the mold set 10 according to the first embodiment.

(Second embodiment)
As shown in FIG. 6, the die set 56 according to the second embodiment includes a die die 58 and the punch die 14 according to the first embodiment. In other words, the die set 56 according to the second embodiment uses the die die 58 instead of the die die 12 (see FIG. 1) according to the first embodiment. The die die 58 is detachably attached to the lower turret 18 as a lower attachment base in the multi-tasking machine 16 (see FIG. 2) via a cylindrical lower rotation holder (not shown). The die die 58 has the same configuration as the die die 12, and only the configuration of the die die 58 different from the die die 12 will be described below. Among the plurality of constituent elements of the die die 58, those corresponding to the constituent elements of the die die 12 are designated by the same reference numerals in the drawings.

  As shown in FIGS. 6 to 8D, at a position adjacent to the die chip 34 on the upper surface of the die body 30, a part of the contour T of the product part Wm of the sheet metal W except the part Ta (see FIG. 5A) is cut. After that, a push-up pin 60 is provided as a push-up portion for pushing up the product portion Wm with respect to the remaining material portion Wr by the thickness of the sheet metal W. The push-up pin 60 is attachable to and detachable from the die body 30 and extends in a direction parallel to the die chip 34. Further, a notch 36n for inserting the push-up pin 60 is formed on the inner wall surface of the die insertion hole 36h of the die ejector 36 (see FIGS. 7A and 7B). The tip of the push-up pin 60 is located above the tip of the die chip 34. The push-up pin 60 projects from the upper surface of the die ejector 36 when the die ejector 36 descends while resisting the biasing force of the coil spring 48. A protrusion amount δ (see FIG. 8D) of the push-up pin 60 with respect to the upper surface of the die ejector 36 when pushing up the product portion Wm is smaller than a step amount β (see FIG. 8D) of the step 52s with respect to the lower surface of the punch tip 52. It is set.

  The push-up pin 60 and the coining portion 34c can be changed in any direction by the lower index mechanism and the upper index mechanism while maintaining the parallel orientation.

Next, the operational effects of the mold set 56 according to the second embodiment, including the operation of the mold set 56 according to the second embodiment, will be described with reference to FIGS. 2, 6, and 8A to 8E.
explain.

  The sheet metal moving mechanism 28 moves the sheet metal W in the X-axis direction and / or the Y-axis direction with respect to the punching position PP. As a result, as shown in FIG. 8A, the sheet metal W is positioned such that the product portion Wm is located above the push-up pin 60 and the residual material portion Wr is located above the coining portion 34c.

  After the sheet metal W is positioned, the punch head 54 is pressed from above by the striker 22 to lower the punch body 50 while resisting the biasing force of the plurality of lifter springs. Then, as shown in FIGS. 8B and 8C, the punch tip 52 presses the residual material portion Wr of the sheet metal W from above, and the push-up pin 60 moves the product portion Wm of the sheet metal W relative to the residual material portion Wr. Push up.

  Further, while the punch chip 52 presses the remaining material portion Wr of the sheet metal W from above, the lowering operation of the punch body 50 lowers the die ejector 36 against the biasing force of the coil spring 48. Then, as shown in FIG. 8D, the product portion Wm of the sheet metal W is pushed up relative to the residual material portion Wr by the thickness of the sheet metal W, and the coining portion 34c is moved to the upper surface of the die ejector 36. The recess Wd is formed in the vicinity of the cut surface Wrs on the back surface of the residual material portion Wr of the sheet metal W by protruding upward. As a result, when a part of the sheet metal W flows in, a linear engagement that can be locked to the back surface of the product portion Wm pushed up by the thickness of the sheet metal W to the cutting surface Wrs of the residual material portion Wr of the sheet metal W. The stop protrusion Wp can be formed.

  After that, the pressed state of the punch head 54 by the striker 22 is released. Then, as shown in FIG. 8E, the punch body 50 is raised by the urging force of the plurality of lifter springs, and the punch die 14 returns to the original state. Further, the die ejector 36 is lifted by the biasing force of the coil spring 48, and the die die 58 returns to the original state.

  In other words, according to the configuration of the mold set 56 according to the second embodiment, the cutting surface Wrs of the residual material portion Wr of the sheet metal W is cut after the portion of the sheet metal W except a part of the contour of the product portion Wm is cut. Further, it is possible to form the linear locking protrusion Wp that can be locked on the back surface of the product portion Wm pushed up by the thickness of the sheet metal W. Therefore, after cutting the sheet metal W, the product M can be held in a state of being pushed up (floating) from the residual material R.

  Therefore, the mold set 56 according to the second embodiment has the same effect as the mold set 10 according to the first embodiment.

(Third Embodiment)
As shown in FIG. 9, the die set 62 according to the third embodiment includes a die die 64 and a punch die 66. The die die 64 is detachably attached to a lower turret 18 as a lower attachment base in the multi-tasking machine 16 (see FIG. 2) via a cylindrical lower rotation holder (not shown). The punch die 66 is detachably attached to the upper turret 20 as an upper attachment base in the multi-tasking machine 16 via a cylindrical upper rotation holder (not shown).

  First, a specific configuration of the die die 64 will be described.

  As shown in FIGS. 9, 10A, and 10B, the die mold 64 includes a cylindrical die body 68, and the die body 68 is detachably attached to the lower turret 18 via a lower rotation holder. .. A key 70 for disabling the die body 30 with respect to the lower rotation holder is provided at an appropriate position on the outer peripheral surface of the die body 68. The key 70 fits into a key groove (not shown) formed on the inner peripheral surface of the lower rotation holder. A circular boss 68s is formed in the center of the upper surface of the die body 68. A plurality of (only one is shown) stepped first guide holes 68h are formed in the die body 68. A second guide hole 68b is formed between the first guide holes 68h in the die body 68. The first guide holes 68h and the second guide holes 68b are alternately arranged along the circumferential direction of the die body 68.

  On the upper side of the die body 68, a disc-shaped die ejector 72 that supports the sheet metal W is provided so as to be able to move up and down. Further, a connecting bolt 74 is provided in each first guide hole 68h of the die body 68 so as to be able to move up and down and not detachable, and an upper end portion of each connecting bolt 74 is fixed to the die ejector 72. A slide pin 76 is vertically movable in each of the second guide holes 68b of the die body 68, and an upper end portion of each slide pin 76 is fixed to the die ejector 72. In other words, the die ejector 72 is provided on the upper side of the die body 68 so as to be able to move up and down and not to be detached via the plurality of (only one shown) connecting bolts 74 and the plurality of (only one shown) slide pins 76. There is.

  A mounting bolt 78 is provided at the center of the lower surface of the die body 68. A support ring 80 that supports the lower ends (lower end surfaces) of the plurality of slide pins 76 is provided on the mounting bolt 78 so as to be able to move up and down. An annular spring seat 82 is provided at the lower end of the mounting bolt 78. Between the support ring 80 and the spring seat 82 on the outer peripheral surface side of the mounting bolt 78, a coil spring as a biasing member that biases the die ejector 72 upward through the support ring 80 and the plurality of slide pins 76. 84 is provided.

  Subsequently, a specific configuration of the punch die 66 will be described.

  As shown in FIGS. 9, 11A, and 11B, the punch die 66 includes a cylindrical punch guide 86, and the punch guide 86 is detachably attached to the upper turret 20 via an upper rotation holder. To be done. The punch guide 86 is supported by a plurality of lifter springs (not shown) provided at appropriate positions on the upper turret 20. A key groove 86g for making the punch guide 86 non-rotatable with respect to the upper rotary holder is formed on the outer peripheral surface of the punch guide 86, and the key groove 86g extends in the vertical direction. The key groove 86g of the punch guide 86 can be fitted with an upper key (not shown) provided on the inner peripheral surface of the upper rotation holder. Further, a punch insertion hole 86h is formed at the lower end of the punch guide 86.

  A punch body 88 is vertically movable inside the punch guide 86. The punch body 88 is configured to be non-rotatable around the axis C of the punch die 66 with respect to the punch guide 86 by a fitting action of a key (not shown) and a key groove (not shown). Further, a punch tip 90 is detachably provided at the lower end of the punch body 88, and the punch tip 90 can be inserted into the punch insertion hole 86h of the punch guide 86. A punch head 92 is provided at the upper end of the punch body 88, and the punch head 92 is pressed by the striker 22 from above. The punch tip 90 may be integrally formed on the lower end of the punch body 88, instead of being detachably provided on the lower end of the punch body 88.

  An annular retainer collar 94 is provided on the upper side of the punch guide 86, and the retainer collar 94 surrounds the outer peripheral surface of the punch body 88. A stripping spring 96 is provided between the punch head 92 and the retainer collar 94 on the upper side of the punch body 88 as a biasing member for biasing the punch body 88 upward with respect to the punch guide 86. ing.

  Subsequently, characteristic portions of the die die 64 and the punch die 66 will be described.

  As shown in FIGS. 9 to 10B, in the boss portion 68s of the die body 68, after the cutting process is performed on a portion of the contour T of the product portion Wm of the sheet metal W (see FIG. 5A), the product portion Wm is cut. A column-shaped pushing-up portion 68p that pushes up the sheet metal relative to the remaining material portion Wr by the thickness of the sheet metal W is formed. In other words, the push-up portion 68p is provided on the upper surface of the die body 68 via the boss portion 68s. The push-up portion 68p is eccentric with respect to the axis C of the die die 64. The push-up portion 68p projects from the upper surface of the die ejector 72 by the lowering operation of the die ejector 72.

  As shown in FIGS. 9, 11A, and 11B, a rim portion (protruding portion) 86r for pressing the residual material portion Wr is formed at a position adjacent to the punch insertion hole 86h on the lower surface of the punch guide 86, The rim portion 86r projects downward from the lower surface of the punch guide 86. The protrusion amount λ of the rim portion 86r with respect to the lower surface of the punch guide 86 (see FIG. 12B) is set to be larger than the maximum protrusion amount μ of the push-up portion 68p with respect to the upper surface of the die ejector 36 (see FIG. 12B).

  As shown in FIG. 9, FIG. 11A, FIG. 11B, and FIG. 12C, at the tip of the punch tip 90, a concave portion Wd having a V-shaped cross section is formed in the vicinity of the cut surface of the rear surface of the residual material portion Wr of the sheet metal W. A coining portion 90c for coining is formed. The coining portion 90c forms a recess Wd in the vicinity of the cut surface on the back surface of the residual material portion Wr of the sheet metal W, so that a part of the sheet metal W flows in (expands) to form a linear shape on the cut surface Wrs of the residual material portion Wr. The locking protrusion Wp is formed. The locking protrusion Wp extends in the same direction as the recess Wd and can be locked to the back surface of the product portion Wm pushed up by the pushing-up portion 68p. The coining portion 90c corresponds to a protrusion forming portion for forming a linear locking protrusion Wp on the cut surface of the residual material portion Wr. The coining portion 90c is located on the axis C of the punch die 66 and extends in the diameter direction. When the punch body 88 descends with respect to the punch guide 86 while resisting the biasing force of the stripping spring 96, the coining portion 34c projects downward with respect to the lower surface of the rim portion 86r of the punch guide 86. Further, the rim portion 86r of the punch guide 86 is formed with a notch 86n for inserting the coining portion 90c.

  The direction of the push-up part 68p and the coining part 90c can be changed in any direction by the upper index mechanism and the lower index mechanism.

  Next, the operational effects of the mold set 62 according to the third embodiment, including the operation of the mold set 62 according to the third embodiment, will be described with reference to FIGS. 2, 9, and 12A to 12D.

  The sheet metal moving mechanism 28 moves the sheet metal W in the X-axis direction and / or the Y-axis direction with respect to the punching position PP. As a result, as shown in FIG. 12A, the sheet metal W is positioned so that the product portion Wm is located above the push-up portion 68p.

  After the sheet metal W has been positioned, the striker 22 presses the punch head 92 from above to lower the punch body 88. Then, the punch guide 86 lowers integrally with the punch body 88 while resisting the biasing force of the plurality of lifter springs, and the rim portion 86r of the punch guide 86 presses the residual material portion Wr of the sheet metal W from above. Further, in that state, the die ejector 72 is lowered by the lowering operation of the punch guide 86 while resisting the biasing force of the coil spring 84, and the lower surface of the die ejector 72 is brought into pressure contact with the upper surface of the die body 68. Then, as shown in FIG. 12B, the push-up portion 68p projects toward the upper surface of the die ejector 72, and pushes up the product portion Wm of the sheet metal W relative to the residual material portion Wr by the thickness of the sheet metal W. ..

  Further, with the rim portion 86r of the punch guide 86 pressing the residual material portion Wr of the sheet metal W from above, the punch body 88 descends with respect to the punch guide 86 against the biasing force of the stripping spring 96. Then, as shown in FIG. 12C, the coining portion 90c projects downward with respect to the lower surface of the rim portion 86r of the punch guide 86 to form a recess Wd in the vicinity of the cut surface Wrs on the back surface of the residual material portion Wr of the sheet metal W. To do. As a result, when a part of the sheet metal W flows in, a linear engagement that can be locked to the back surface of the product portion Wm pushed up by the thickness of the sheet metal W to the cutting surface Wrs of the residual material portion Wr of the sheet metal W. The stop protrusion Wp can be formed.

  Then, the pressed state of the punch head 92 by the striker 22 is released. Then, as shown in FIG. 9 and FIG. 12D, the punch body 88 is raised by the biasing force of the stripping spring 96 with respect to the punch guide 86, and the punch guide 86 is raised by the biasing forces of the plurality of lifter springs to punch the punch. The mold 14 returns to the original state. Further, the die ejector 72 is lifted by the urging force of the coil spring 84, and the die die 64 returns to the original state.

  That is, according to the configuration of the mold set 62 according to the third embodiment, the cutting surface Wrs of the remaining material portion Wr of the sheet metal W is cut after the portion of the sheet metal W except a part of the contour of the product portion Wm is cut. Further, it is possible to form the linear locking protrusion Wp that can be locked on the back surface of the product portion Wm pushed up by the thickness of the sheet metal W. Therefore, after cutting the sheet metal W, the product M can be held in a state of being pushed up (floating) from the residual material R.

  Therefore, the mold set 62 according to the third embodiment has the same effects as the mold set 10 according to the first embodiment.

(Fourth Embodiment)
A sheet metal working method according to the fourth embodiment will be described with reference to FIGS. 2 and 13A to 13E.

  As shown in FIGS. 2 and 13A, while irradiating the laser beam from the laser processing head 24 downward, the irradiation position BP of the laser processing head 24 is set to the sheet metal W by the Y-axis moving mechanism 26 and the sheet metal moving mechanism 28. The product portion Wm is moved along the contour T. Then, as shown in FIG. 13B, a part of the contour T of the product portion Wm of the sheet metal W except for a part (final cutting portion) Ta is subjected to a cutting process, and the sheet metal W has a slit S along the contour of the product portion Wm. Can be formed.

  After cutting the portion of the contour T of the product portion Wm of the sheet metal W excluding the final cut portion Ta, the sheet metal W is positioned by the sheet metal moving mechanism 28, and half shearing, which is one of the forming processes, is performed. Then, as shown in FIG. 13C, stepped portions Wc are formed at a plurality of positions in the vicinity of the cut surface Wrs on the back surface of the residual material portion Wr of the sheet metal W, and in the vicinity of the cut surface Wrs of the surface of the residual material portion Wr of the sheet metal W. Pin-shaped restriction protrusions Wb capable of restricting displacement of the product M (see FIG. 13F) are formed at a plurality of locations. A louver, a lance, or the like may be used instead of using the half shear as the molding process.

  Further, while the sheet metal moving mechanism 28 positions the sheet metal W and changes the directions of the pushing-up portion 36p (see FIG. 1) and the coining portion 34c (see FIG. 1), the die set 10 (see FIG. 1) is described above. To work like. Then, as shown in FIGS. 13D and 13F, linear locking protrusions Wp can be formed at a plurality of positions on the cut surface Wrs of the residual material portion Wr of the sheet metal W.

  After that, while irradiating the laser beam downward from the laser processing head 24, the irradiation position BP of the laser processing head 24 is moved by the Y-axis moving mechanism 26 along the final cutting portion Ta of the contour T of the product portion Wm of the sheet metal W. To move. Then, as shown in FIGS. 13E and 13F, the final cutting portion Ta of the contour T of the product portion Wm of the sheet metal W is subjected to a cutting process, and the sheet metal W is formed along the final cutting portion Ta of the contour T of the product portion Wm. The slit S is formed. Thus, the product M can be manufactured from the sheet metal W.

  That is, according to the sheet metal processing method of the fourth embodiment, after cutting the portion of the contour T of the product portion Wm of the sheet metal W excluding a portion Ta, cutting the surface of the residual material portion Wr of the sheet metal W. The pin-shaped restricting protrusions Wb can be formed at a plurality of positions near the surface Wrs, and the linear locking protrusions Wp can be formed at a plurality of positions on the cut surface Wrs of the residual material portion Wr of the sheet metal W. Therefore, after the sheet metal W is cut, the product M can be held in a state of being pushed up (floating) from the residual material R, and the positional deviation of the product M can be regulated.

  Therefore, according to the sheet metal processing method of the fourth embodiment, the product M can be carried out from the multi-tasking machine 16 without forming a micro joint for connecting the product M and the residual material R on the sheet metal W. it can.

  It should be noted that the present invention is not limited to the above description of the embodiment, and can be implemented in various modes, for example, as follows.

  Instead of the coining portion 34c in the mold set 10 (56) forming the recessed portion Wd having a V-shaped cross section near the cut surface on the back surface of the residual material portion Wr of the sheet metal W, the recessed portion having the cross-sectional shape shown in FIGS. 14A and 14B is used. Wd may be formed. Further, in the sheet metal working method according to the first embodiment, instead of coining the recess Wd in the vicinity of the cutting surface Wrs on the back surface of the residual material portion Wr of the sheet metal W, as shown in the operation of the die set 62, The recess Wd may be coined near the cut surface Wrs on the surface of the residual material portion Wr.

  In the sheet metal working method according to the fourth embodiment, instead of forming the pin-shaped regulation protrusions Wb at a plurality of positions near the cutting surface Wrs on the surface of the residual material portion Wr of the sheet metal W, the bridge-shaped regulation protrusions shown in FIG. Wb may be formed.

  The scope of rights included in the present invention is not limited to the above embodiment.

10 die set 12 die die 14 punch die 16 multi-tasking machine 18 lower turret (lower mounting base)
20 Upper turret (upper mounting base)
22 Striker 24 Laser processing head 26 Y-axis moving mechanism 28 Sheet metal moving mechanism 30 Die body 30h First guide hole 30b Second guide hole 32 Key 34 Die tip 34c Coining part (projection forming part)
36 die ejector 36h die insertion hole 36p push-up part 36n notch 38 connecting bolt 40 slide pin 42 mounting bolt 44 support ring 46 spring seat 48 coil spring (biasing member)
50 Punch Body 50g Key Groove 52 Punch Chip 52g Key Groove 52s Step 54 Punch Head 56 Die Set 58 Die Die 60 Push Up Pin (Push Up)
62 die set 64 die die 66 punch die 68 die body 68h first guide hole 68b second guide hole 68s boss portion 68p push-up portion 70 key 72 die ejector 74 connecting bolt 76 slide pin 78 mounting bolt 80 support ring 82 spring Seat 84 Coil spring (biasing member)
86 Punch guide 86g Key groove 86h Punch insertion hole 86r Rim part (projection part)
86n Notch 88 Punch body 90 Punch tip 90c Coining part (projection forming part)
92 Punch head 94 Retainer color 96 Stripping spring PP Punch processing position BP Laser irradiation position of laser processing head W Sheet metal Wm Product part Wr Remaining material part (non-product part)
Wrs Cut surface Wd Recess Wp Locking protrusion Wc Step Wb Regulating protrusion M Product R Remaining material S Slit

Claims (11)

A push-up portion for pushing up the product portion relative to the residual material portion after performing a cutting process on a portion except a part of the contour of the product portion of the sheet metal,
A projection forming portion for forming a locking projection capable of locking the back surface of the pushed-up product portion on the cut surface of the residual material portion of the sheet metal, the mold.   The protrusion forming part is a coining part that forms the locking protrusion on the cut surface of the residual material part by coining a recess in the vicinity of the cut surface on the back surface of the residual material part to cause a part of sheet metal to flow in. The mold according to claim 1. With a die body,
A die chip provided on the upper surface of the die body,
A die ejector provided on the upper side of the die body so as to be able to move up and down, and in which a die insertion hole for inserting the die chip is formed;
On the upper surface of the die ejector, a push-up portion is provided for pushing up the product portion relative to the residual material portion after performing a cutting process on a portion except a part of the contour of the product portion of the sheet metal,
A die forming die is provided at the tip of the die chip, and a protrusion forming portion is formed on the cut surface of the remaining material portion of the sheet metal to form an engaging protrusion that can be engaged with the back surface of the pushed-up product portion. .. With a die body,
A die chip provided on the upper surface of the die body,
A die ejector provided on the upper side of the die body so as to be able to move up and down, and in which a die insertion hole for inserting the die chip is formed;
On the upper surface of the die body, a push-up portion is provided for pushing up the product portion relative to the residual material portion after cutting the portion of the sheet metal except for a part of the contour of the product portion, and A cutout for inserting the push-up portion is formed in the die ejector,
A die forming die is provided at the tip of the die chip, and a protrusion forming portion is formed on the cut surface of the remaining material portion of the sheet metal to form an engaging protrusion that can be engaged with the back surface of the pushed-up product portion. ..   The protrusion forming part is a coining part that forms the locking protrusion on the cut surface of the residual material part by coining a recess in the vicinity of the cut surface on the back surface of the residual material part to cause a part of sheet metal to flow in. The die die according to claim 3 or 4. A die die according to any one of claims 3 to 5,
The punch body comprises a punch body for pressing the sheet metal from above, and a punch die provided with a punch chip provided at a lower end portion of the punch body.
A mold set in which a step portion for allowing the pushed-up product portion to escape is formed on the lower surface of the punch tip. A die die including a die body and a die ejector provided on the upper side of the die body so as to be capable of moving up and down,
A cylindrical punch guide with a punch insertion hole formed at the lower end, a punch body that can be moved up and down inside the punch guide, and a punch body that is provided at the lower end of the punch body and can be inserted into the punch insertion hole It consists of a punch die equipped with various punch tips,
On the upper surface of the die body, a push-up portion is provided for pushing up the product portion relative to the residual material portion after cutting the portion of the sheet metal except for a part of the contour of the product portion, and A die insertion hole for inserting the push-up portion into the die ejector is formed,
A die is formed at a tip end portion of the punch tip, and a protrusion forming portion is formed on the cutting surface of the remaining material portion of the sheet metal to form an engaging protrusion that can be engaged with the back surface of the pushed-up product portion. set. The push-up portion projects with respect to the upper surface of the die ejector by the lowering operation of the die ejector,
A rim portion for pressing the residual material portion is provided at a position adjacent to the punch insertion hole on the lower surface of the punch guide, and a protrusion amount of the rim portion with respect to a lower surface of the punch guide is pushed up with respect to an upper surface of the die ejector. The mold set according to claim 7, which is set to be larger than the maximum protrusion amount of the portion.   The projection forming portion is a coining portion that coins a recess in the vicinity of the cut surface of the surface of the residual material portion to form the locking projection on the cut surface of the residual material portion by inflow of a part of the sheet metal. The mold set according to claim 7 or claim 8. Cutting is applied to the part of the sheet metal except the part of the contour of the product part,
Pushing up the product part relative to the remaining material part,
Forming a locking projection that can be locked on the back surface of the product section that has been pushed up, on the cut surface of the remaining material of the sheet metal,
Then, a sheet metal working method in which a part of the contour of the product portion is cut.   The sheet metal according to claim 10, wherein the locking projection is formed on the cut surface of the residual material portion by coining a recess in the vicinity of the cut surface of the back surface or the front surface of the residual material portion to flow in a part of the sheet metal. Processing method.

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