JP7390222B2 - Molds, die molds, mold sets, punch molds, and sheet metal processing methods - Google Patents

Description

The present invention relates to a mold, a die mold, a mold set, a punch mold, and a sheet metal processing method used in a sheet metal processing machine such as a multitasking machine.

A product can be manufactured from a sheet metal by cutting the sheet metal along the contour of the product part using a sheet metal processing machine such as a punch press or a laser processing machine. When the product is transported out of the sheet metal processing machine together with the sheet metal (residual material), joint processing is used as the processing form of the cutting process, in which a plurality of minute joint parts are left between the product and the sheet metal (Patent Document 1 and Patent Document 2, etc.).

In addition, as prior art related to the present invention, in addition to Patent Document 1 and Patent Document 2, there are those shown in Patent Document 3 to Patent Document 6.

Japanese Patent Application Publication No. 2001-62528 Japanese Patent Application Publication No. 2013-220451 JP2018-79511A Japanese Patent Application Publication No. 2017-131915 Japanese Patent Application Publication No. 2007-75889 Japanese Patent Application Publication No. 2004-268101

By the way, when joint processing is used, it is necessary to dismantle the product and remove joint marks on the product after the product is removed from the sheet metal processing machine, which poses a problem in that it is not easy to increase product productivity. There is.

Therefore, in order to solve the above-mentioned problem, the present invention provides a mold, a die mold, and a die that can transport the product together with the sheet metal from a sheet metal processing machine without leaving any joint parts between the product and the sheet metal. The purpose is to provide a mold set, a punch mold, and a sheet metal processing method.

The mold according to the first embodiment has a push-up part for pushing up the product part relative to the remaining material part after cutting a part of the product part of the sheet metal except for a part of the outline. a regulating part forming part for forming a movement regulating part on a cut surface side of the remaining material part, which regulates movement of the pushed-up product part in the horizontal direction with respect to the remaining material part; A protrusion forming part that forms a locking protrusion that can be locked on the back surface of the product part on a cut surface of the remaining material part.

In the first embodiment, the movement restriction section may be a bridge that can come into contact with the cut surface of the product section. In this case, the regulating portion forming portion is a bridge forming portion for forming the bridge by shearing a part of the remaining material portion toward the cut surface side of the remaining material portion.

The die mold according to the second embodiment includes a die body having a boss portion formed on the upper surface thereof, and a die insertion hole provided above the die body so as to be movable up and down, and through which the boss portion of the die body is inserted. and a die ejector biasing member that biases the die ejector upward. and a push-up part for pushing up the product part relative to the remaining material part after cutting a part of the boss part of the die body excluding a part of the outline of the product part of the sheet metal. is provided. A regulating part forming part for forming a movement regulating part in the boss part of the die body on the cut surface side of the remaining material part, which regulates horizontal movement of the pushed-up product part with respect to the remaining material part. is provided. A protrusion forming part is provided on both sides or one side of the boss part of the die body for forming a locking protrusion that can be locked on the back surface of the pushed-up product part on the cut surface of the remaining material part. There is.

In a second embodiment, the movement restriction section may be a bridge that can come into contact with the cut surface of the product section. In this case, the regulating portion forming portion is a bridge forming portion for forming the bridge by shearing a part of the remaining material portion toward the cut surface side of the remaining material portion.

The mold set according to the third embodiment includes the die mold according to the second embodiment and a punch mold. The punch mold includes a cylindrical punch guide, a presser plate provided below the punch guide and having a punch insertion hole formed therein, and a presser plate provided movably up and down in the punch guide, and the presser plate provided below the punch guide. The punch ejector includes a punch ejector provided with a punch tip that can be inserted into the punch insertion hole of the plate, and a biasing member for the punch ejector that biases the punch ejector downward. A rim portion that presses the cut surface side of the surface of the remaining material portion is provided at a position adjacent to the punch insertion hole on the lower surface of the presser plate, and below the punch insertion hole in the rim portion, A cutout portion for receiving the movement restriction portion is continuously formed. A holding part forming part is provided at the tip of the punch tip for forming a product holding part in the movement regulating part that can hold the edge of the front surface of the product part.

In a third embodiment, the movement restriction section may be a bridge that can come into contact with the cut surface of the product section. In this case, the regulating portion forming portion is a bridge forming portion for forming the bridge by shearing a part of the remaining material portion toward the cut surface side of the remaining material portion.

The punch mold according to the fourth embodiment includes a cylindrical punch guide, a presser plate provided below the punch guide and having a punch insertion hole formed therein, and provided movably up and down within the punch guide. The punch ejector includes a punch ejector provided on the lower side with a punch tip that can be inserted into the punch insertion hole of the presser plate, and a biasing member that biases the punch ejector downward. A rim portion (protrusion) that presses the cut surface side of the surface of the remaining material portion is provided at a position adjacent to the punch insertion hole on the lower surface of the presser plate, and is provided below the punch insertion hole in the rim portion. A cutout portion is continuously formed on the side for receiving a movement restriction portion that restricts horizontal movement of the product portion relative to the remaining material portion. A holding portion forming portion is provided at the tip of the punch tip for forming a product holding portion capable of holding a front edge of the product portion in the movement regulating portion.

In a fourth embodiment, the movement restricting portion may be a bridge formed on the cut surface side of the remaining material portion.

In the sheet metal processing method according to the fifth embodiment, cutting is performed on a part of the sheet metal excluding a part of the outline of the product part, and the product part is pushed up relative to the remaining material part. A movement regulating portion that restricts horizontal movement of the pushed-up product portion relative to the remaining material portion is formed on the cut surface side of the remaining material portion, and is lockable to the back surface of the product portion. A locking protrusion is formed on the cut surface of the remaining portion of the sheet metal. Thereafter, a part of the outline of the product part is cut.

In a fifth embodiment, the movement restriction section may be a bridge that can come into contact with the cut surface of the product section.

According to the present invention, the work of disassembling the product and the work of removing joint marks on the product can be omitted, thereby increasing the productivity of the product.

FIG. 1 is a sectional view of a mold set according to this embodiment. FIGS. 2A and 2B are cross-sectional views of the die according to this embodiment, showing different cross sections along the axial direction of the die. FIG. 3A(a) is a plan view of the die body of the die mold according to the present embodiment. FIG. 3A(b) is a side view of the die body of the die mold according to the present embodiment. FIG. 3B(a) is a sectional view taken along the line II in FIG. 3A(a), and FIG. 3B(b) is a sectional view taken along the line II-II in FIG. 3A(a). FIG. 4A is a cross-sectional view of the punch die according to this embodiment. FIG. 4B is a cross-sectional view of the punch die according to this embodiment, showing a different cross section from FIG. 4A along the axial direction of the punch die. FIG. 5(a) is a sectional view of the presser plate of the punch mold according to the present embodiment, and FIG. 5(b) is a bottom view (bottom view) of the presser plate of the punch mold according to the present embodiment. be. FIG. 6(a) is a sectional view of the punch ejector of the punch mold according to the present embodiment, and FIG. 6(b) is a bottom view of the punch ejector of the punch mold according to the present embodiment. FIG. 7A is a cross-sectional view illustrating the operation of the mold set according to this embodiment. FIG. 7B is an enlarged view of section III in FIG. 7A. FIG. 7C is a cross-sectional view illustrating the operation of the mold set according to this embodiment. FIG. 7D is an enlarged view of section IV in FIG. 7C. FIG. 7E is a cross-sectional view illustrating the operation of the mold set according to this embodiment, and shows a different cross section from FIG. 7C along the axial direction of the punch mold. FIG. 7F is an enlarged view of section V in FIG. 7E. FIG. 8A is a plan view of a sheet metal to be processed by the sheet metal processing method according to the present embodiment. FIG. 8B is a plan view of a sheet metal explaining the sheet metal processing method according to this embodiment. FIG. 8C is a plan view of a sheet metal explaining the sheet metal processing method according to this embodiment. FIG. 8D is a plan view of a sheet metal explaining the sheet metal processing method according to this embodiment. FIG. 8E(a) is an enlarged view of section VI in FIGS. 8C and 8D, and FIG. 8E(b) is a view taken along line VII-VII in FIG. 8E(a). 8F(a), FIG. 8C, and FIG. 8D are enlarged sectional views taken along the line VIII-VIII, and FIG. 8F(b) is an enlarged view of section IX in FIG. 8F(a). FIG. 9 is a cross-sectional view showing how a bridge is formed using a punch die according to Modification 1 of the present embodiment, and corresponds to FIG. 7D. FIG. 10(a) is a cross-sectional view of a punch ejector of a punch mold according to modification 1 of the present embodiment, and FIG. 10(b) is a sectional view of a punch ejector of a punch mold according to modification 1 of this embodiment. FIG. FIG. 11A is a cross-sectional view illustrating a bridge formed using a punch mold according to Modification 1 of the present embodiment, and corresponds to FIG. 8F(a). FIG. 11(b) is an enlarged view of the X section in FIG. 11(a). FIG. 12 is a cross-sectional view showing how a bridge is formed using a punch mold according to modification 2 of the present embodiment, and corresponds to FIG. 7D. FIG. 13(a) is a sectional view of a punch ejector of a punch mold according to a second modification of the present embodiment, and FIG. 13(b) is a sectional view of a punch ejector of a punch mold according to a second modification of the present embodiment. FIG. FIG. 14(a) is a cross-sectional view illustrating a bridge formed using a punch die according to modification 2 of the present embodiment, and corresponds to FIG. 8F(a). FIG. 14(b) is an enlarged view of section XI in FIG. 14(a).

The present embodiment (including Modified Examples 1 and 2) will be described below with reference to the drawings.

Note that in the specification and claims of the present application, the term "mold" includes a die mold, a punch mold, and a mold set consisting of a die mold and a punch mold. The term "provided" includes not only direct provision but also indirect provision and formation via another member. In the specification of the present application, the "X-axis direction" refers to the left-right direction that is the horizontal direction, and the "Y-axis direction" refers to the front-rear direction that is the horizontal direction orthogonal to the X-axis direction. "Axis" refers to the axis of a die or punch mold. "Diameter direction" refers to the diameter direction of the die or punch mold. In the drawings, "U" indicates upward, and "D" indicates downward.

As shown in FIG. 1, the mold set 10 according to this embodiment includes a die mold 12 and a punch mold 14. The die mold 12 is removably mounted on a lower turret 16 as a lower mounting base in a multi-tasking machine (mostly not shown) via a cylindrical lower rotary holder (not shown). The punch die 14 is removably attached to an upper turret 18 as an upper attachment base in a multitasking machine via a cylindrical upper rotating holder (not shown).

Here, the multitasking machine is a sheet metal processing machine that performs punching (including punching, coining, etc.) and laser processing on the sheet metal W. The multi-tasking machine has a known configuration as shown in Patent Document 3 and Patent Document 4, for example, and includes a striker 20 that presses a punch die 14 indexed to a punch processing position PP, and a striker 20 that irradiates a laser beam (laser light). A laser processing head 22 (see FIG. 8B) is provided. The laser processing head 22 is movable in the X-axis direction and the Y-axis direction relative to the sheet metal W, and is optically connected to a laser oscillator (not shown) such as a fiber laser oscillator that outputs a laser beam. ing.

The lower rotary holder is configured to be rotatable by a lower index mechanism shown in, for example, Patent Document 5 and Patent Document 6. In other words, the die mold 12 rotates integrally with the lower rotating holder around the axis C of the die mold 12 by the lower index mechanism. Similarly, the upper rotating holder is configured to be rotatable by the upper index mechanism shown in Patent Document 5 and Patent Document 6, for example. In other words, the punch die 14 rotates integrally with the lower rotary holder around the axis C of the punch die 14 by the upper index mechanism.

Next, a specific configuration of the die mold 12 will be explained.

As shown in FIGS. 1 to 3B, the die mold 12 includes a cylindrical die body 24, and the die body 24 is removably attached to the lower turret 16 via a lower rotating holder. The die body 24 has a key 26 provided on its outer circumferential surface and a key groove (not shown) formed on the inner circumferential surface of the lower rotating holder. It is configured so that it cannot rotate around center C.

Two stepped support holes 24h are formed in the die body 24, and the two support holes 24h are arranged symmetrically about the axis C of the die mold 12. A plurality of (four in this embodiment) mounting recesses 24d are formed on the upper surface of the die body 24 at intervals in the circumferential direction. Further, a boss portion 24b is formed at the center of the upper surface of the die body 24. A stepped guide hole 24v is formed in the center of the boss portion 24b of the die body 24, and the guide hole 24v is arranged eccentrically with respect to the axis C of the die mold 12. A mounting hole 24i is continuously formed below the guide hole 24v inside the die body 24.

As shown in FIGS. 1 and 2, a disk-shaped die ejector 28 that supports the sheet metal W is provided on the upper side of the die body 24 so as to be movable up and down (moveable in the vertical direction). A connecting bolt 30 is provided in each support hole 24h of the die body 24 so as to be movable up and down but not detachable, and the upper end of each connecting bolt 30 is fixed to the die ejector 28. In other words, the die ejector 28 is provided on the upper side of the die body 24 via a plurality of (only one shown) connecting bolts 30 so that it can be raised and lowered and cannot be removed. Furthermore, a die insertion hole 28h is formed in the center of the die ejector 28, through which the boss portion 24b of the die body 24 is inserted. A plurality of housing recesses 28d (only one shown) are formed at intervals in the circumferential direction on the lower surface of the die ejector 28, and each housing recess 28d is aligned with each mounting recess 24d of the die body 24. There is.

Each mounting recess 24d of the die body 24 is provided with a coil spring 32 as a die ejector biasing member that biases the die ejector 28 upward. The upper part of each coil spring 32 is accommodated in each accommodation recess 28d of the die ejector 28.

A push-up pin 34 is provided in the guide hole 24v of the die body 24 so as to be movable up and down. The push-up pin 34 cuts the part of the outline T of the product part Wm of the sheet metal W except for a part Ta (see FIG. 8A), and then moves the product part Wm relative to the remaining part Wr of the sheet metal. This corresponds to a push-up portion for pushing up by the thickness of the W plate. The product part Wm is a part of the sheet metal W that becomes the product M (see FIG. 8D). The remaining material portion Wr is a portion of the sheet metal W that will become the remaining material R (see FIG. 8D). The push-up pin 34 protrudes from the upper surface of the die ejector 28 when the die ejector 28 descends while resisting the biasing force of the coil spring 32. Further, a coil spring 36 is provided in the attachment hole 24i of the die body 24 via a plug 38 as a biasing member for the push-up pin that urges the push-up pin 34 as a push-up portion upward.

Note that instead of configuring the push-up pin 34 to be movable up and down with respect to the die body 24, it may be configured integrally with the die body 24. In this case, the coil spring 36 is omitted from the configuration of the die mold 12.

As shown in FIGS. 1 to 3B, at a position adjacent to the push-up pin 34 on the tip surface of the boss portion 24b of the die body 24, a portion of the remaining material portion Wr is sheared to the cut surface Wrs side of the remaining material portion Wr. A bridge forming portion 24f for forming a bridge B (see FIGS. 7F, 8E, and 8F) is formed. The bridge B can contact the cut surface Wms (cut surface Ms of the product M) of the product portion Wm that has been pushed up (see FIGS. 8E and 8F), and can contact the product portion relative to the residual material portion Wr (remaining material R). This corresponds to a movement regulating section that regulates the movement of Wm (product M) in the horizontal direction. The bridge forming part 24f corresponds to a regulating part forming part for forming a movement regulating part, and is located on the axis C of the die mold 12 and extends in the diametrical direction. The bridge forming portion 24f has a trapezoidal cross-section in the longitudinal direction, and a rectangular cross-section in the transverse direction. Furthermore, when the die ejector 28 descends while resisting the biasing force of the coil spring 32, the bridge forming portion 24f protrudes from the upper surface of the die ejector 28.

On both sides of the bridge forming part 24f on the tip surface of the boss part 24b of the die body 24, there are protrusions for forming locking protrusions Wp (see FIGS. 7F, 8E, and 8F) on the cut surface Wrs of the remaining material part Wr. Forming portions 24c are formed respectively. The locking protrusion Wp can lock onto the back surface of the pushed-up product portion Wm (see FIGS. 8E and 8F). Each protrusion forming portion 24c is formed by coining (coining) a recess Wd having a V-shaped cross section in the vicinity of the cut surface Wrs on the back surface of the remaining material portion Wr. ) flows to form a locking protrusion Wp on the cut surface Wrs of the remaining material portion Wr (see FIG. 8F). Each protrusion forming portion 24c extends in the diameter direction, and the height position of each protrusion forming portion 24c is lower than the height position of the bridge forming portion 24f. The cross section of the protrusion forming portion 24c in the lateral direction is formed into a trapezoidal shape. When the die ejector 28 descends while resisting the biasing force of the coil spring 32, each protrusion forming portion 24c protrudes from the upper surface of the die ejector 28 following the bridge forming portion 24f.

Note that instead of forming the protrusion forming parts 24c on both sides of the bridge forming part 24f, the protruding forming part 24c may be formed only on one side of the bridge forming part 24f.

Next, the specific configuration of the punch die 14 will be explained.

As shown in FIGS. 1, 4A to 6, the punch die 14 includes a cylindrical punch guide 40, and the punch guide 40 is removably attached to the upper turret 18 via an upper rotating holder. Ru. The punch guide 40 holds the punch mold 14 against the upper rotary holder by engaging a key groove 40g formed on its outer circumferential surface with an upper key (not shown) provided on the inner circumferential surface of the upper rotary holder. It is configured to be non-rotatable around the axis C. Further, a punch driver 42 is provided at the upper end (upper side) of the punch guide 40, and the punch driver 42 is supported by a lifter spring (not shown) provided at an appropriate position on the upper turret 18. A punch head 44 is provided at the upper end of the punch driver 42, and the punch head 44 is pressed from above by the striker 20.

A circular presser plate 46 is provided at the lower end (lower side) of the punch guide 40. A rectangular punch insertion hole 46h is formed in the center of the presser plate 46, and the punch insertion hole 46h is located on the axis C of the punch mold 14. A guide hole 46v is formed in the presser plate 46, and the guide hole 46v is arranged eccentrically with respect to the axis C of the punch mold 14. Further, a key groove 46g is formed on the outer peripheral surface of the presser plate 46, and the key groove 46g is continuous with the key groove 40g of the punch guide 40.

A punch ejector 48 is provided within the punch guide 40 so as to be movable up and down. A boss portion 48b projecting downward is formed on the lower surface of the punch ejector 48, and a punch tip 48t is formed in the center of the boss portion 48b. In other words, the punch tip 48t is provided below the punch ejector 48. The punch tip 48t can be inserted into the punch insertion hole 46h of the presser plate 46, and is located on the axis C of the punch die 14. A mounting hole 48i is formed in the punch ejector 48, and the mounting hole 48i vertically aligns with (opposes) the guide hole 46v of the presser plate 46. The boss portion 48b of the punch ejector 48 is formed with a cutout portion 48n that is continuous with the attachment hole 48i.

As shown in FIGS. 1, 4A, and 4B, a stepped rod-shaped spacer 50 is provided above the punch ejector 48 in the punch guide 40 so as to be movable up and down. A coil spring 52 is provided above the spacer 50 in the punch guide 40 as a punch ejector biasing member that biases the punch ejector 48 downward via the spacer 50. Furthermore, when the punch ejector 48 rises while resisting the biasing force of the coil spring 52, the spacer 50 comes into contact with the lower surface of the punch driver 42 (see FIGS. 7C and 7E).

A presser pin 54 is provided in the guide hole 46v of the presser plate 46 so as to be movable up and down. The presser pin 54 corresponds to a presser portion that presses the product portion Wm that is being pushed up from above. The upper part of the presser pin 54 is supported in the mounting hole 48i of the punch ejector 48 so as to be movable up and down. Further, a coil spring 56 is provided in the attachment hole 48i of the punch ejector 48 as a biasing member for the presser pin that urges the presser pin 54 as a presser portion downward.

As shown in FIGS. 1, 4A to 6, at a position adjacent to the punch insertion hole 46h on the lower surface of the presser plate 46, there is a rim portion ( A protrusion) 46r is provided. The rim portion 46r protrudes downward from the lower surface of the presser plate 46, and has a rectangular shape when viewed from the bottom side (downward) of the presser plate 46. A notch 46n for receiving the bridge B is continuously formed on the lower side of the punch insertion hole 46h in the rim portion 46r (see FIG. 7D), and the notch 46n is connected to the axis C of the punch die 14. It is located above. The rim portion 46r (the inner surface of the cutout portion 46n of the rim portion 46r) holds the bridge B from above (see FIG. 7F).

A holding portion forming portion 48c for forming a holding protrusion Bp (see FIG. 8F) as a product holding portion on the bridge B is formed at the tip of the punch tip 48t. The holding protrusion Bp can hold the edge on the surface side of the product part Wm (see FIG. 8F), and may be locked to the surface of the product part Wm. The distal end surface of the holding portion forming portion 48c is composed of two orthogonal surfaces, and the distal end edge of the holding portion forming portion 48c is located on the axis C of the punch die 14. The holding part forming part 48c forms a holding protrusion Bp on the side surface of the bridge B by coining a recess Bd in the upper part (upper surface) of the bridge B, so that a part of the material of the sheet metal W flows in (see FIG. 8F).

In the mold set 10, the orientation of the holding part forming part 48c and the bridge forming part 24f is determined by the upper index mechanism and the lower index mechanism, with the holding part forming part 48c and the bridge forming part 24f facing each other vertically. The direction can be changed. The orientation of each protrusion forming portion 24c is changed according to the change in the orientation of the bridge forming portion 24f.

Next, the effects of the mold set 10 according to this embodiment will be described with reference to FIGS. 1 and 7A to 7F.

As shown in FIG. 1, the sheet metal W is punched at the punching position PP so that the product part Wm is located above the push-up pin 34 and the remaining material part Wr is located above the bridge forming part 24f and the protrusion forming part 24c. Position against. Then, the punch head 44 is pressed from above by the striker 20, and the punch guide 40 is lowered while resisting the biasing force of the lifter spring. Then, as shown in FIGS. 7A and 7B, the rim portion 46r of the presser plate 46 comes into contact with the surface of the remaining material portion Wr, and the presser pin 54 contacts the surface of the product portion Wm.

Then, when the punch ejector 48 is raised relative to the punch guide 40 while resisting the biasing force of the coil spring 52 due to the downward movement of the punch guide 40, the spacer 50 contacts (pressures) the lower surface of the punch driver 42. Furthermore, in this state, the die ejector 28 is lowered while resisting the biasing force of the coil spring 32 by the lowering operation of the punch guide 40. Then, as shown in FIGS. 7C and 7D, the push-up pin 34 protrudes from the upper surface of the die ejector 28 while resisting the biasing force of the coil spring 36, thereby moving the product part Wm relative to the remaining material part Wr. Push up the sheet metal W by the thickness of the sheet metal W. Further, as shown in FIGS. 7D, 7E, and 7F, the bridge forming portion 24f protrudes from the upper surface of the die ejector 28, and a bridge B is formed on the cut surface Wrs side of the remaining material portion Wr. Each protrusion forming portion 24c protrudes from the upper surface of the die ejector 28 following the bridge forming portion 24f, and coins a recess Wd near the cut surface Wrs on the back surface of the remaining material portion Wr (see FIG. 8F). As a result, a portion of the material of the sheet metal W flows in, and a locking protrusion Wp is formed on the cut surface Wrs of the remaining material portion Wr.

As shown in FIGS. 7C and 7D, when forming the locking protrusion Wp on the cut surface Wrs of the remaining material portion Wr, with the rim portion 46r holding the bridge B from above, the holding portion forming portion 48c is Coin a recess Bd in the upper part (top surface) of the bridge B (see FIG. 8F). As a result, a holding protrusion Bp is formed on the side surface of the bridge B by a part of the material of the sheet metal W flowing into the holding protrusion Bp.

Thereafter, the pressing state of the punch head 44 by the striker 20 is released. Then, the punch guide 40 is raised by the biasing force of the lifter spring, and the punch die 14 is returned to its original state. Further, the die ejector 28 is raised by the biasing force of the coil spring 32, and the die mold 12 is returned to its original state.

That is, according to the configuration of the mold set 10 according to the present embodiment, in a state where the product part Wm is pushed up by the thickness of the sheet metal W relative to the residual material part Wr, the cut surface of the residual material part Wr is A bridge B having a holding protrusion Bp is formed on the Wrs side, and a locking protrusion Wp is formed on the cut surface Wrs of the remaining material portion Wr. Therefore, after cutting the contour T of the product part Wm of the sheet metal W except for a part Ta (see FIG. 8A), the product M is pushed up from the remaining material R by the thickness of the sheet metal W. , horizontal movement of the product M relative to the remaining material R can be restricted. Thereby, the product M can be carried out from the multitasking machine together with the sheet metal W (residual material R) without leaving the joint portion between the product M and the sheet metal W.

Therefore, according to the mold set 10 according to the present embodiment, the work of disassembling the product M and the work of removing joint marks on the product M can be omitted, thereby increasing the productivity of the product M.

Next, a sheet metal processing method according to this embodiment will be described with reference to FIGS. 1 and 8A to 8F. Note that in FIGS. 8B and 8D, the locus of movement of the irradiation position BP of the laser processing head 22 is shown by a two-dot chain line.

As shown in FIGS. 1, 8A, and 8B, while irradiating a laser beam from the laser processing head 22, the irradiation position BP of the laser processing head 22 is moved along the contour T of the product portion Wm of the sheet metal W. Then, a slit S along the outline T can be formed in the product part Wm of the sheet metal W by cutting a part of the outline T of the product part Wm of the sheet metal W except for the part (final cutting part) Ta. .

After cutting the outline T of the product portion Wm of the sheet metal W except for the final cut portion Ta, the metal is The mold set 10 is operated as described above. Then, as shown in FIGS. 8C, 8E, and 8F, bridges B having holding protrusions Bp are formed at multiple locations on the cut surface Wrs side of the remaining material portion Wr, and the cut surface Wrs of the remaining material portion Wr is Locking protrusions Wp are formed at a plurality of locations.

Thereafter, as shown in FIGS. 8C and 8D, while irradiating the laser beam from the laser processing head 22, the irradiation position BP of the laser processing head 22 is set along the final cut portion Ta of the outline Ta of the product portion Wm of the sheet metal W. move it. Then, the final cut portion Ta of the contour T of the product portion Wm of the sheet metal W is cut to form a slit S along the final cut portion Ta of the contour T in the product portion Wm of the sheet metal W. Thereby, the product M can be manufactured from the sheet metal W using the multi-tasking machine.

That is, according to the sheet metal processing method according to the present embodiment, as described above, in a state where the product part Wm is pushed up by the thickness of the sheet metal W relative to the residual material part Wr, the residual material part Wr A bridge B having a holding protrusion Bp is formed on the cut surface Wrs side, and a locking protrusion Wp is formed on the cut surface Wrs of the remaining material portion Wr. Therefore, after cutting the part of the contour T of the product part Wm of the sheet metal W except for part Ta, the product M is pushed up from the remaining material R by the thickness of the sheet metal W, and then the remaining material R is Movement of the product M in the horizontal direction can be restricted. Thereby, the product M can be carried out from the multitasking machine together with the sheet metal W (residual material R) without leaving the joint portion between the product M and the sheet metal W.

Therefore, the sheet metal processing method according to the present embodiment provides the same effects as the mold set 10 according to the present embodiment.

(Modification 1 of this embodiment)
Modification 1 of this embodiment will be described with reference to FIGS. 9 to 11.

As shown in FIGS. 9 to 11, the punch die 14A according to the first modification of the present embodiment includes a punch ejector 48A instead of the punch ejector 48 (see FIG. 1) of the punch die 14. , has the same configuration as the punch die 14. Further, the punch ejector 48A has the same configuration as the punch ejector 48 except for a part. Of the configurations of the punch ejector 48A, only the configurations that are different from the punch ejector 48 will be described. Note that among the plurality of constituent elements in the punch die 14A, those corresponding to those in the punch die 14 are given the same reference numerals in the drawings.

The distal end surface of the holding portion forming portion 48c is a flat surface (horizontal surface) and is located on the axis C of the punch die 14. By crushing the holding part forming part 48c against the upper part (top surface) of the bridge B, a part of the material of the sheet metal W flows to form a holding protrusion Bp as a product holding part on the side surface of the bridge B.

Modification 1 of this embodiment also provides the same effects as those of the mold set 10 according to the above-described embodiment.

(Modification 2 of this embodiment)
Modification 2 of this embodiment will be described with reference to FIGS. 12 to 14.

As shown in FIGS. 12 to 14, a punch mold 14B according to a second modification of the present embodiment includes a punch ejector 48B instead of the punch ejector 48 (see FIG. 1) of the punch mold 14. , has the same configuration as the punch die 14. Further, the punch ejector 48B has the same configuration as the punch ejector 48 except for a part. Of the configurations of the punch ejector 48B, only those that are different from the punch ejector 48 will be described. Note that among the plurality of constituent elements in the punch die 14B, those corresponding to those in the punch die 14 are given the same reference numerals in the drawings.

The distal end surface of the holding portion forming portion 48c is a surface inclined with respect to the axis C of the punch die 12B, and is located on the axis C of the punch die 14. The holding part forming part 48c forms a product holding part Bp that can hold the edge of the surface side of the product part Wm on the upper part of the bridge B by tilting the bridge B toward the product part Wm side.

Modification 2 of this embodiment also provides the same effects as the mold set 10 according to the above-described embodiment.

Note that the present invention is not limited to the description of the embodiments described above, and can be implemented in various ways as follows. Instead of forming the bridge B and the plurality of locking projections Wp using the same mold set 10, the bridge B and the plurality of locking projections Wp may be formed using two different mold sets (not shown). good. Movement regulating portions other than the bridge B may be formed by half-shears, louvers, lances, embossing, or the like. In this case, the movement regulating portions other than the bridge B and the plurality of locking protrusions Wp are formed using the same mold set (not shown) or two different mold sets (not shown).

The scope of rights encompassed by the present invention is not limited to the above-described embodiments.

10 Mold set 12 Die mold 14 Punch mold 16 Lower turret (lower mold holding member)
18 Upper turret (upper mold holding member)
20 Striker 22 Laser processing head 24 Die body 24h Support hole 24d Mounting recess 24b Boss part (die chip)
24v Guide hole 24i Mounting hole 24f Bridge forming part (regulating part forming part)
24c Projection forming part 26 Key 28 Die ejector 28h Die insertion hole 28d Accommodation recess 30 Connection bolt 32 Coil spring (biasing member for die ejector)
34 Push-up pin (push-up part)
36 Coil spring (biasing member for push-up pin)
38 Plug 40 Punch guide 40g Keyway 42 Punch driver 44 Punch head 46 Presser plate 46g Keyway 46h Punch insertion hole 46v Guide hole 46r Rim part 46n Notch part 48 Punch ejector 48b Boss part 48t Punch tip 48i Mounting hole 48n Notch part 48c Holding Part forming part 50 Spacer 52 Coil spring (biasing member for punch ejector)
54 Presser pin (presser part)
56 Coil spring (biasing member for presser pin)
12A Punch mold 48A Punch ejector 12B Punch mold 48B Punch ejector C Axis center of die mold or punch mold PP Punch processing position BP Irradiation position of laser processing head W Sheet metal Wm Product section Wms Cutting surface of product section Wr Remaining material Part Wrs Cut surface of remaining material Wd Recess Wp Locking protrusion B Bridge (movement restriction part)
Bd Recess Bp Holding protrusion (product holding part)
M Product R Remaining material

Claims (21)

a push-up part for pushing up the product part relative to the remaining material part after cutting a part of the product part of the sheet metal except for a part of the outline;
a regulating portion forming portion for forming a movement regulating portion on a cut surface side of the remaining material portion to regulate horizontal movement of the pushed-up product portion relative to the remaining material portion;
A mold comprising: a protrusion forming part that forms a locking protrusion that can be locked on the back surface of the pushed-up product part on a cut surface of the remaining material part. The protrusion forming part forms the locking protrusion on the cut surface of the residual material part by coining a recess near the cut surface of the back surface of the residual material part, so that a part of the sheet metal material flows in. The mold according to item 1. The movement restriction part is a bridge that can come into contact with the cut surface of the product part, and the restriction part forming part shears a part of the residual material part by moving the bridge toward the cut surface side of the residual material part. The mold according to claim 1 or 2, which is a bridge forming part for forming a bridge. The mold according to claim 3, further comprising a holding part forming part for forming a product holding part on the bridge, which can hold the edge of the surface side of the pushed-up product part. 5. The mold according to claim 4, wherein the holding part forming part forms the product holding part on the side surface of the bridge by coining a recessed part in the upper part of the bridge so that a part of the sheet metal material flows therein. 5. The mold according to claim 4, wherein the holding part forming part forms the product holding part on the side surface of the bridge by crushing the upper part of the bridge so that a part of the sheet metal material flows into the holding part forming part. The mold according to claim 4, wherein the holding part forming part forms the product holding part on the bridge by tilting the bridge toward the product part. A die body with a boss formed on the top surface,
a die ejector that is movable up and down above the die body and has a die insertion hole through which the boss portion of the die body is inserted;
a die ejector biasing member that biases the die ejector upward;
The boss portion of the die body is provided with a push-up portion for pushing up the product portion relative to the remaining material portion after cutting a portion excluding a part of the outline of the product portion of the sheet metal. is,
A regulating part forming part for forming a movement regulating part in the boss part of the die body on the cut surface side of the remaining material part, which regulates horizontal movement of the pushed-up product part with respect to the remaining material part. is established,
A protrusion forming part is provided on both sides or one side of the boss part of the die body for forming a locking protrusion that can be locked on the back surface of the pushed-up product part on the cut surface of the remaining material part. There is a die mold. The protrusion forming part forms the locking protrusion on the cut surface of the residual material part by coining a recess near the cut surface of the back surface of the residual material part, so that a part of the sheet metal material flows in. The die mold according to item 8. The movement restriction part is a bridge that can come into contact with the cut surface of the product part, and the restriction part forming part shears a part of the residual material part by moving the bridge toward the cut surface side of the residual material part. The die mold according to claim 8 or 9, which is a bridge forming part for forming a bridge. Consisting of the die mold according to claim 8 and a punch mold,
The punch mold is
A cylindrical punch guide,
a presser plate provided below the punch guide and having a punch insertion hole formed therein;
a punch ejector that is provided in the punch guide so as to be movable up and down, and has a punch tip on the lower side that can be inserted into the punch insertion hole of the presser plate;
a punch ejector biasing member that biases the punch ejector downward;
A rim portion that presses the cut surface side of the surface of the remaining material portion is provided at a position adjacent to the punch insertion hole on the lower surface of the presser plate, and a rim portion that presses the cut surface side of the surface of the remaining material portion is provided below the punch insertion hole in the rim portion. A cutout portion for receiving the restriction portion is continuously formed,
A mold set, wherein a holding part forming part for forming a product holding part capable of holding a surface side edge of the product part in the movement regulating part is provided at the tip of the punch tip. The movement restriction part is a bridge that can come into contact with the cut surface of the product part, and the restriction part forming part shears a part of the residual material part by moving the bridge toward the cut surface side of the residual material part. The mold set according to claim 11, which is a bridge forming part for forming. 13. The mold set according to claim 12, wherein the holding part forming part forms the product holding part on the side surface of the bridge by coining a recess in the upper part of the bridge so that a part of the sheet metal material flows therein. . 13. The mold set according to claim 12, wherein the holding part forming part forms the product holding part on the side surface of the bridge by crushing the upper part of the bridge so that a part of the sheet metal material flows therein. The mold set according to claim 12, wherein the holding portion forming portion forms the product holding portion on the bridge by tilting the bridge toward the product portion. A cylindrical punch guide,
a presser plate provided below the punch guide and having a punch insertion hole formed therein;
a punch ejector that is provided in the punch guide so as to be movable up and down, and has a punch tip on the lower side that can be inserted into the punch insertion hole of the presser plate;
a biasing member that biases the punch ejector downward;
A rim portion that presses the cut surface side of the surface of the remaining material portion is provided at a position adjacent to the punch insertion hole on the lower surface of the presser plate, and a rim portion of the product portion is provided below the punch insertion hole in the rim portion. A cutout portion is continuously formed to receive a movement restriction portion that restricts movement of the remaining material portion in the horizontal direction,
A punch mold, wherein a holding part forming part for forming a product holding part capable of holding a surface side edge of a product part in the movement regulating part is provided at the tip of the punch tip. The punch die according to claim 16, wherein the movement restriction portion is a bridge formed on a cut surface side of the remaining material portion. 18. The punch mold according to claim 17, wherein the holding part forming part forms the product holding part on the side surface of the bridge by coining a recess in the upper part of the bridge so that a part of the sheet metal material flows therein. . 18. The punch die according to claim 17, wherein the holding part forming part forms the product holding part on the side surface of the bridge by crushing the upper part of the bridge so that a part of the sheet metal material flows in. The punch mold according to claim 17, wherein the holding part forming part forms the product holding part on the bridge by tilting the bridge toward the product part. Cutting is performed on the part of the sheet metal product excluding a part of the outline.
Pushing up the product part relative to the remaining material part,
A movement regulating portion that restricts horizontal movement of the pushed-up product portion relative to the residual material portion is formed on a cut surface side of the residual material portion, and a locking portion that can be locked to a back surface of the product portion. Form protrusions on the cut surface of the remaining sheet metal,
Thereafter, a part of the outline of the product part is cut.

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