JP2003181569A - Pressing die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressing die which is the most suitable for a large-item small-scale production system especially used for a metal press. <P>SOLUTION: The pressing die is provided with an upper die holder 1 having a shank 2, a lower die holder 3, an upper die 4, and a lower die 5. The upper die 4 is provided in a freely attachable/detachable fashion at the lower part of the upper die holder 1. The lower die 5 confronting to the upper die 4 is provided in a freely attachable/detachable fashion at the upper part of the lower die holder 3. The upper die 4 and the lower die 5 are made to be selectively exchangeable to the upper die holder 1 and the lower die holder 3 and the upper die holder 1 having the shank 2 and the lower die holder 3 are used as a common member for pressing in the large-item small-scale production. The exchange work of the upper die 4 and the lower die 5 to the upper die holder 1 and the lower die holder 3 can be executed simply and press molding for the production in a multiple kind and the pressing die can easily cope with the large-item small-scale production. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal mold for press working, which is most suitable for small-lot production of a wide variety of products for use in metal presses.

[0002]

2. Description of the Related Art As shown in FIG. 16, a conventional press-forming die for full blanking press forming includes an upper die holder 200 having a shank 200a, and a spacer 2 as an upper die 201.
02, backing plate 203, punch 20 for punching
4, a punch holder 205, an outer shape cutting die 206, a die holder 207, a die knockout 208 and the like are incorporated, and a lower die holder 210 includes a backing plate 212 as a lower die 211, a punch holder 213, an outer shape punching punch 214, a stripper 215 and a guide post. It has a structure in which 216 and the like are incorporated. Then, when pressing a new molded product of a different type, a mold corresponding to the new molded product had to be remanufactured.

Further, it is composed of a base plate attached to a pressing device and parts such as a die attached to the base plate. The parts such as the die are detachably attached to the base plate, and the parts such as the die are pressed. Japanese Unexamined Patent Publication (Kokai) No. 63-36936 discloses a cassette-type press die in which a plurality of products having different processed shapes are prepared and can be exchanged in a cassette type.

[0004]

However, in the conventional die for press working, a small amount of molded products may be produced for each product type. Since it is necessary to design and manufacture a die for press work each time, not only is it time-consuming for the die production man-hour, but also the die production cost is high.
Since the number of mold parts is large, it is necessary to store and manage a large number of molds when preparing a mold for a wide variety of molded products. A large space is required, and if the manufactured die is to be incorporated into the press machine, each component of the die must be set again from the beginning, and it takes time and effort to assemble the die parts. It was troublesome.

Further, the cassette type press die disclosed in Japanese Patent Laid-Open No. 63-36936 requires a replacement work for attaching / detaching parts such as a die to / from a base plate in correspondence with various molded products. After the replacement work of the parts such as the above with respect to the base plate, the base plate is fixed to the platen of the pressing device, whereby the press work becomes possible.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to make the upper die and the lower die selectively replaceable with respect to the movable side common member and the fixed side common member, and to provide the movable side common member having a shank. Also, the fixed side common member is used as a common member for press working in high-mix low-volume production, and it is easy to replace the movable side common member and the fixed-side common member of the upper and lower molds, which enables high-mix low-volume production. It is easy to deal with press molding, and when pressing different types of low-volume molded products of different types, there is no need to design and manufacture a pressing mold each time as in the conventional case, and the number of man-hours required to manufacture the mold is reduced. Therefore, it is an object of the present invention to provide a die for press working that can reduce the manufacturing cost of the die without taking the problem.

[0007]

A die for press working according to the present invention comprises a movable common member having a shank, a fixed common member arranged below the movable common member, and a workpiece. Multiple upper molds for high-mix low-volume production that are selectively interchangeable and standardized for different types of press molding, and selective standardized for different types of press molding of workpieces A plurality of interchangeable lower molds for small-lot production of a wide variety of products, the upper mold being detachably provided in the lower part of the movable side common member, and the upper mold facing the upper mold in the fixed side common member. It has a configuration characterized in that the lower mold is detachably provided.

In the die for pressing according to the present invention, the upper die is mounted on the movable side common member by a positioning knock pin and a fixing bolt, and the lower die is positioned on the fixed side common member. It is attached with a knock pin and a fixing bolt.

In the die for press working according to the present invention, the upper die is a die holder disposed below the movable-side common member, an outer shape cutting die disposed below the die holder, and the outer shape. The die lower has a die knockout provided so as to be retractable in the die and a punch for punching the die holder penetrating through the outer shape die and the die knockout. A punch holder disposed facing the die holder above the side common member, a punch for contour cutting disposed above the punch holder so as to face the die knockout, and a punch for contour cutting described above. A stripper that is arranged so as to be vertically movable so as to face the outer shape drawing die, a guide post that vertically guides the stripper that is erected on the punch holder, and the striker. And a biasing means for constantly urging toward the Tsu path upwards.

In the die for press working of the present invention, the upper die is a punch holder disposed below the movable-side shared member, a punch plate disposed below the punch holder, and the punch. A box-shaped bending punch disposed through the punch plate in the lower part of the holder, a guide post hung vertically on the punch plate, and a knockout pin provided to be retractable in the box-shaped bending punch. The lower die has a die holder disposed above the fixed-side shared member so as to face the punch holder, and a box-shaped bending disposed above the die holder so as to face the punch plate. The die includes a die and a die knockout that is arranged in the box-shaped bending die so as to be capable of retracting and facing the box-shaped bending punch.

In the die for press working of the present invention, the upper die is a punch holder disposed under the movable-side common member, a punch plate disposed under the punch holder, and the punch. A die holder that has a V-shaped bending punch that is disposed below the holder and penetrates the punch plate, and the lower die is disposed above the fixed-side shared member so as to face the punch holder. A V-shaped bending die disposed above the die holder so as to face the punch plate, and a gauge plate for setting a workpiece disposed on the V-shaped bending die at a predetermined position. And have.

In the pressing die of the present invention, the gauge plate can be replaced with the V-shaped bending die.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. The press working die of the present invention includes an upper die holder 1 which is a movable side shared member having a shank 2, a lower die holder 3 which is a fixed side shared member disposed below the upper die holder 1, Multiple upper molds 4 for high-mix low-volume production that can be selectively exchanged and standardized for different types of press forming of workpieces, and standardized for press forming of different types of workpieces And a plurality of lower molds 5 for small-lot production of various kinds that can be selectively exchanged, an upper mold 4 is detachably provided at a lower part of the upper mold holder 1, and an upper mold is provided at an upper part of the lower mold holder 3. A lower mold 5 facing the mold 4 is detachably provided.

In the press die of the present invention, the upper die 4 has two positioning knock pins 6 and 4 with respect to the upper die holder 1.
The lower die 5 is attached to the lower die holder 3 with two positioning knock pins 8 and four fixing bolts 9.

FIG. 1 is a sectional view showing the structure of a pressing die according to the first embodiment of the present invention, and FIG. 2 is an upper view of the pressing die according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view showing the structures of the mold holder and the upper mold, and FIG. 3 is a cross-sectional view showing the structures of the lower mold holder and the lower mold of the pressing die according to the first embodiment of the present invention. As shown in FIG. 1, the die for press working of the present invention includes a die holder 10 in which an upper die 4 is disposed below the upper die holder 1, and a die for contour cutting disposed in the lower portion of the die holder 10. 11 and a die knockout 12 provided so as to be retractable from the outer shape drawing die 11
And a punching punch 13 arranged in the die holder 10 so as to pass through the outer shape punching die 11 and the die knockout 12.
An outer shape in which the lower die 5 has a lower die 5 disposed above the lower die holder 3 so as to face the die holder 10, and a lower die 5 disposed above the punch holder 14 so as to face the die knockout 12. Punch 15 for punching and punch 1 for punching the outer shape
5, a stripper 16 which is arranged to face the outer shape drawing die 11 and is movable in the vertical direction, two guide posts 17 which vertically guide the stripper 16 which is erected on the punch holder 14, and a stripper. It has two coil springs 18 serving as a biasing means for constantly biasing 16 upward.

As shown in FIG. 1, a shank 2 projecting upward is erected on the upper portion of the upper die holder 1 of the press die, and the upper die holder 1 has a shank 2 as shown in FIG. To
A screw hole 19 and a positioning hole 20 are provided at appropriate places.

A die holder 10 for the upper die 4 is disposed below the upper die holder 1 as shown in FIG.
0, as shown in FIG.
Fixing bolt insertion hole 21 that communicates with the screw hole 19, a positioning hole 22 that communicates with the positioning hole 20 of the upper die holder 1, a bolt insertion hole 23, a positioning hole 24, and a punching punch insertion hole. A hole 25 and a knockout bolt insertion hole 26 are provided.

As shown in FIGS. 1 and 2, the positioning knock pin 6 is press-fitted into the positioning hole 20 of the upper die holder 1 and the positioning hole 22 of the die holder 10 of the upper die 4, so that the die holder of the upper die 4 is pressed. 10 fixing bolt insertion hole 21
The fixing bolt 7 is inserted from below into the upper mold holder 1
A fixing bolt 7 is screwed into the screw hole 19 of the upper die 4, and the die holder 10 of the upper die 4 is positioned by the positioning knock pin 6 with respect to the upper die holder 1.
Are fixed to the upper die holder 1 by fixing bolts 7.

At the center of the die holder 10, as shown in FIG. 1, the punch 1 for punching out the upper die 4 protruding downward.
3, a large diameter portion 13a is formed at the upper end of the punching punch 13 as shown in FIG.
The hole punching punch insertion hole 25 has a hole punching punch 13 inserted therein from above, and the recess 2 is formed in a part of the hole punching punch insertion hole 25 of the die holder 10 and opens upward.
The large diameter portion 13a of the punching punch 13 is fitted into the punching punch 5a, and the punching punch 13 is fixed to the punching punch insertion hole 25 of the die holder 10.

At the lower part of the die holder 10, as shown in FIG. 1, an outer shape cutting die 11 of the upper die 4 is arranged, and as shown in FIG. Screw hole 27 communicating with the bolt insertion hole 23 of the die holder 10
A positioning hole 28 communicating with the positioning hole 24 of the die holder 10, an outer shape punching hole 29, and a guide hole (not shown) into which the guide post 17 is inserted are provided.

As shown in FIGS. 1 and 2, a positioning knock pin 30 is press-fitted into the positioning hole 24 of the die holder 10 and the positioning hole 28 of the outer shape drawing die 11, and into the bolt insertion hole 23 of the die holder 10. Bolt 31 is inserted from above, and screw hole 27 of die 11 for external shape removal is inserted.
A bolt 31 is screwed into the concave portion 2 formed in a part of the bolt insertion hole 23 of the die holder 10 and opening upward.
The head 31a of the bolt 31 is fitted to 3a, the outer shape drawing die 11 is positioned with respect to the die holder 10 by the positioning knock pin 30, and the outer shape drawing die 11 is fixed to the die holder 10 with the bolt 31. There is.

Outer-shape cutting hole 2 of the outer-shape cutting die 11
As shown in FIG. 1, the die knockout 12 of the upper die 4 is arranged in the upper and lower parts 9 of the die 9 so as to be movable in the vertical direction. The die knockout 12 has holes in the die holder 10 at appropriate positions as shown in FIG. The punching punch insertion hole 32 is provided along the same central axis as the punching punch insertion hole 25, and the screw hole 33 is provided along the same central axis as the knockout bolt insertion hole 26 of the die holder 10.

As shown in FIGS. 1 and 2, the punching punch insertion hole 32 of the die knockout 12 is fitted with the punching punch 13 from above.

As shown in FIGS. 1 and 2, the knockout bolt 34 is inserted into the knockout bolt insertion hole 26 of the die holder 10 from above, so that the die knockout 12 is inserted.
A bolt portion 34b provided at the tip of the knockout bolt 34 is screwed into the screw hole 33 of the knockout bolt 34, and the recessed portion 26a formed in a part of the knockout bolt insertion hole 26 of the die holder 10 which opens upward is provided with the knockout bolt 34. The head 34a is fitted, and the die knockout 12 is suspended by the die holder 10 via the knockout bolt 34 so as to be vertically movable.

Outer-shape cutting hole 2 of the outer-shape cutting die 11
As shown in FIGS. 1 and 2, a coil spring 35 that constantly urges the die knockout 12 downward is disposed inside the knockout bolt 34 in the interior of the coil 9. It is pushed downward by the urging force, and the dyno knockout 12
The lower surface of is slightly projected below the lower surface of the die 11 for external shape removal.

As shown in FIGS. 1 and 3, the lower die holder 3 of the die for press working has screw holes 36 at appropriate places,
A positioning hole 37 and an opening hole 38 are provided.

As shown in FIG. 1, a punch holder 14 of the lower die 5 facing the die holder 10 of the upper die 4 is disposed above the lower die holder 3, and the punch holder 14 is shown in FIG. As described above, a fixing bolt insertion hole 39 communicating with the screw hole 36 of the lower mold holder 3, a positioning hole 40 communicating with the positioning hole 37 of the lower mold holder 3, and a bolt insertion hole 41 at appropriate positions, A positioning hole 42, a taper hole 43,
A guide post insertion hole 44 and a through hole 45 are provided.

As shown in FIGS. 1 and 3, the positioning knock pin 8 is press-fitted into the positioning hole 37 of the lower die holder 3 and the positioning hole 40 of the punch holder 14 of the lower die 5, thereby allowing the lower die 5 to move. Fixing bolt insertion hole 3 for punch holder 14
The fixing bolt 9 is inserted into the lower die 9 from above, and the fixing bolt 9 is screwed into the screw hole 36 of the lower die holder 3 to form the lower die 5.
The punch holder 14 is positioned with respect to the lower die holder 3 by a positioning knock pin 8, and the punch holder 14 of the lower die 5 is fixed to the lower die holder 3 with fixing bolts 9.

As shown in FIG. 1, an outer shape punching punch 15 of the lower die 5 facing the die knockout 12 of the upper die 4 is arranged above the punch holder 14, and the outer shape punching punch 15 includes: As shown in FIG. 3, screw holes 46 communicating with the bolt insertion holes 41 of the punch holder 14 at appropriate positions,
A positioning hole 47 that communicates with the positioning hole 42 of the punch holder 14 and a punching hole 48 that communicates with the tapered hole 43 of the punch holder 14 are provided.

As shown in FIGS. 1 and 3, a positioning knock pin 49 is press-fitted into the positioning hole 42 of the punch holder 14 and the positioning hole 47 of the outer shape punch 15, and a bolt insertion hole of the punch holder 14 is inserted. The bolt 50 is inserted from below into the screw hole 41, the bolt 50 is screwed into the screw hole 46 of the outer shape punching punch 15, and the recessed portion is formed in a part of the bolt insertion hole 41 of the punch holder 14 and opens downward. The head 50a of the bolt 50 is fitted to 41a,
The outer shape punch 15 is positioned with respect to the punch holder 14 by a positioning knock pin 49, and the outer shape punch 15 is fixed to the punch holder 14 with bolts 50.

As shown in FIG. 1, above the punch holder 14, a stripper 16 of the lower die 5 facing the outer shape punching die 11 of the upper die 4 is vertically movable around the outer shape punching punch 15. The stripper 16 is arranged in FIG.
As shown in FIG. 5, the punch fitting hole 51 that fits into the outer shape punch 15 and the guide hole 5 along the same central axis as the guide post insertion hole 44 of the punch holder 14 are provided at appropriate positions.
Two are provided.

As shown in FIG. 1, an upwardly projecting guide post 17 for vertically guiding the stripper 16 is erected on the punch holder 14, and a lower end of the guide post 17 is provided with a guide post 17 as shown in FIG. The flange 17a is formed, and the guide post 17 is inserted into the guide post insertion hole 44 of the punch holder 14 from below.
The flange 17a of the guide post 17 is fitted into the recess 44a formed in a part of the guide post insertion hole 44 of the punch holder 1.
4 is fixed to the guide post insertion hole 44.

In the punch fitting hole 51 of the stripper 16,
As shown in FIGS. 1 and 3, the outer shape punch 15 is fitted, and the guide post 17 is fitted into the guide hole 52 of the stripper 16 from below. It is adapted to be moved in the vertical direction along the line 17.

The through hole 45 of the punch holder 14 is shown in FIG.
Further, as shown in FIG. 3, a coil spring 18 that constantly biases the stripper 16 upward is provided.

The guide post 17 is provided with a stopper (not shown) that prevents the stripper 16 from moving upward due to the urging force of the coil spring 18.
Is stopped by a stopper at a position where its upper surface is flush with the upper surface of the punch 15 for contour cutting.

Next, total blanking press molding by the press working die according to the first embodiment of the present invention will be described. First, the shank 2 of the upper die holder 1 is fixed to a ram (not shown) of the press machine, and the lower die holder 3 is fixed to a table (not shown) of the press machine.

Next, the workpiece is punched with an outer shape 15
After the upper die holder 1 is set at a predetermined position on the stripper 16 and is lowered toward the lower die holder 3 by the ram of the pressing device, the upper die 4 is moved downward as the upper die holder 1 is lowered. The die holder 10 of the upper die 4, the die 11 for contour cutting, the die knockout 12 and the punch 13 for punching, and the punch holder 14 of the lower die 5, the punch 15 for trimming, the stripper 16 and the guide post. 17, the upper end of the guide post 17 is inserted into a guide hole provided in the outer shape drawing die 11 of the upper die 4, and the guide post 17 is moved to the outer shape drawing die 11 of the upper die 4.
Is guided downward toward the outer shape punching punch 15 of the lower die 5.

Lower mold 5 accompanying lowering of upper mold holder 1 of upper mold 4
The lower surface of the outer shape drawing die 11 of the upper die 4 first comes into contact with the upper surface of the stripper 16 of the lower die 5, and then the outer shape drawing die 11 attaches the stripper 16 to the coil spring 18. The guide post 17 guides the stripper 16 downward toward the punch holder 14 while pushing down the guide post 17 while resisting the force.

Next, after the lower surface of the die knockout 12 of the upper die 4 contacts the upper surface of the outer shape punch 15 of the lower die 5, the outer shape punch 15 resists the urging force of the coil spring 35 by the die knockout 12. While die holder 1
It pushes upwards toward 0, and a part of the punch 15 for contour cutting has a hole 2 for contour cutting of the contour drawing die 11 of the upper die 4.
9 and the lower end of the punching punch 13 enters the punching hole 48 of the external punching punch 15.

A part of the outer shape punching punch 15 of the lower die 5 is inserted into the outer shape punching hole 29 of the outer shape punching die 11 of the upper die 4, whereby the outer shape punching punch 15 and the outer shape punching die 11 are inserted. The outer shape punching hole 29 punches out the outer shape corresponding to the molded product from the workpiece.

Further, the lower end of the punching punch 13 is inserted into the punching hole 48 of the contour punching 15, whereby the punching punch 13 and the punching hole 48 of the contour punching 15 are formed. Punches a round hole at a predetermined position of the work piece, and a molded product 53 having a round hole 53a punched in the center as shown in FIG. 4 is the outer shape punching die 11 of the upper die 4, the punching punch 13 and the lower part. A blanking press forming is performed by a punch 15 for punching the outer shape of the mold 5.

Further, the punch 13 for punching holes from the workpiece.
The punching scraps punched by the
Hole for punching 48, taper hole 4 for punch holder 14
It falls through the opening 3 into the opening hole 38 of the lower mold holder 3.

Die 1 for removing the outer shape of the upper die 4 of the molded product 53
1. After the total punching press forming by the punch 13 for punching and the punch 15 for punching the outer shape of the lower die 5, when the upper die holder 1 is lifted upward by the ram of the press device, The upper die 4 moves upward of the lower die 5 as the upper die holder 1 rises, and the press die returns to the original standby state before the blanking press forming shown in FIG.

When the upper die 4 moves upward of the lower die 5 as the upper die holder 1 moves upward, the lower surface of the die knockout 12 of the upper die 4 causes the outer shape punch 1 of the lower die 5.
After being separated from the upper surface of 5, the outer shape punch 15
Is partially removed from the inside of the outer shape punching hole 29 of the outer shape punching die 11 of the upper die 4, and the die knockout 12 attaches the coil spring 35 to the inside of the outer shape punching hole 29 of the outer shape punching die 11. Due to the force, the die knockout 12 moves downwardly of the die holder 10, and the die knockout 12 projects and removes the molded product 53 from the outer shape punching hole 29 of the outer shape punching die 11.

Further, the lower die 5 is moved upward as the upper die holder 1 of the upper die 4 is moved upward, so that the lower surface of the outer shape drawing die 11 of the upper die 4 becomes higher than the upper surface of the stripper 16 of the lower die 5. After the separation, the stripper 16 moves the coil spring 18
The lower die holder 3 along the guide post 17 by the urging force of
Moving upward, the stripper 16 removes the cutting waste of the workpiece attached to the outer shape punching punch 15.

FIG. 5 is a sectional view showing the structure of a pressing die according to the second embodiment of the present invention, and FIG. 6 is an upper view of the pressing die according to the second embodiment of the present invention. FIG. 7 is a sectional view showing the structure of a mold holder and an upper mold, FIG. 7 is a sectional view showing the structure of a lower mold holder and a lower mold of a press die according to the second embodiment of the invention, and FIG. FIG. 6 is a plan view of a lower die holder and a lower die of a pressing die according to the second embodiment of FIG. As shown in FIG. 5, the pressing die of the present invention includes a punch holder 55 in which the upper die 4 is disposed below the upper die holder 1, and a punch plate disposed below the punch holder 55. 56, a box-shaped bending punch 57 that is disposed below the punch holder 55 so as to penetrate the punch plate 56, a guide post 58 that is vertically provided on the punch plate 56, and can freely appear in and out of the box-shaped bending punch 57. The lower die 5 has a knockout pin 59 provided on the lower die 5, and the lower die 5 is disposed above the lower die holder 3 so as to face the punch holder 55. The upper portion of the die holder 60 faces the punch plate 56. A box-shaped bending die 61 arranged as
The box-shaped bending die 61 has a box-shaped bending punch 57 and a die knockout 62 which is arranged so as to be capable of retracting in opposition to the box-shaped bending punch 57.

As shown in FIG. 5, a shank 2 protruding upward is erected on the upper part of the upper die holder 1 of the press die, and the upper die holder 1 has a shank 2 as shown in FIG. To
A screw hole 19 and a positioning hole 20 are provided at appropriate places.

As shown in FIG. 5, a punch holder 55 of the upper die 4 is disposed under the upper die holder 1, and the punch holder 55 is placed at an appropriate position on the punch holder 55 as shown in FIG. Fixing bolt insertion hole 63 communicating with the screw hole 19 of the holder 1
A positioning hole 64 communicating with the positioning hole 20 of the upper die holder 1, a bolt insertion hole 65, and a positioning hole 66.
And a bolt insertion hole 67 is provided.

As shown in FIGS. 5 and 6, the positioning knock pin 6 is press-fitted into the positioning hole 20 of the upper die holder 1 and the positioning hole 64 of the punch holder 55 of the upper die 4, so that the upper die 4 is pressed. Punch holder 55 fixing bolt insertion hole 6
3, a fixing bolt 7 is inserted from below, the fixing bolt 7 is screwed into a screw hole 19 of the upper die holder 1, and the upper die 4
The punch holder 55 is positioned with respect to the upper die holder 1 by a positioning knock pin 6, and the punch holder 55 of the upper die 4 is fixed to the upper die holder 1 with fixing bolts 7.

As shown in FIG. 5, a punch plate 56 of the upper die 4 is arranged below the punch holder 55, and the punch plate 55 is placed at an appropriate position on the punch plate 56 as shown in FIG. Screw hole 68 communicating with the bolt insertion hole 65, a positioning hole 69 communicating with the positioning hole 66 of the punch holder 55, a punch fitting hole 70 into which the box-shaped bending punch 57 is fitted, and a guide post insertion. A hole 71 is provided.

As shown in FIGS. 5 and 6, a positioning knock pin 72 is press-fitted into the positioning hole 66 of the punch holder 55 and the positioning hole 69 of the punch plate 56, and is inserted into the bolt insertion hole 65 of the punch holder 55. Bolt 73 is inserted from above, and screw hole 6 of punch plate 56 is inserted.
8, a bolt 73 is screwed into the punch holder 55, a head portion 73a of the bolt 73 is fitted in a recess 65a formed in a part of the bolt insertion hole 65 of the punch holder 55, and the punch plate 56 is punched. The punch plate 5 is positioned by the positioning knock pin 72 with respect to the holder 55.
6 is fixed to the punch holder 55 with bolts 73.

As shown in FIG. 5, a box-shaped bending punch 57 of the upper die 4 penetrating the punch plate 56 is disposed below the punch holder 55. As shown in FIG.
The screw hole 74 communicating with the bolt insertion hole 67 of
Inside the box-shaped bending punch 57, a spring accommodation hole 75 that opens upward is provided, and at the lower end of the box-shaped bending punch 57, a knockout pin insertion hole 76 that communicates with the spring accommodation hole 75 is provided. It is provided.

In the punch fitting hole 70 of the punch plate 56, as shown in FIGS. 5 and 6, the box-shaped bending punch 57 is formed.
And the bolt 77 is inserted into the bolt insertion hole 67 of the punch holder 55 from above, and the box-shaped bending punch 57 is inserted.
A bolt 77 is screwed into the screw hole 74 of the punch holder 55, and a head portion 77a of the bolt 77 is fitted into a recess 67a formed in a part of the bolt insertion hole 67 of the punch holder 55 and opened upward. The bending punch 57 is fixed to the punch holder 55 with bolts 77.

As shown in FIG. 5, the box-shaped bending punch 57 is provided with a knockout pin 59 of the upper die 4 so as to be movable in the vertical direction, and the knockout pin 59 has a knockout pin 59 as shown in FIG. The flange 59a is formed, and the knockout pin 59 is inserted from above into the knockout pin insertion hole 76 of the box-shaped bending punch 57.

Inside the spring accommodating hole 75 of the box-shaped bending punch 57, as shown in FIGS. 5 and 6, a coil spring 78 for constantly urging the knockout pin 59 downward is disposed. The flange 59a of the knockout pin 59 is pressed against the stepped portion 79 between the spring accommodating hole 75 of the box-shaped bending punch 57 and the knockout pin insertion hole 76 by the biasing force of the coil spring 78, and the lower end portion of the knockout pin 59 is pressed. Is slightly projected downward from the knockout pin insertion hole 76 of the box-shaped bending punch 57.

As shown in FIG. 5, the punch plate 56 is provided with a downwardly projecting guide post 58 for guiding the upper die 4 toward the lower die 5, and the guide post 58 is provided at the upper end of the guide post 58 as shown in FIG. As shown in FIG. 5, a flange 58a is formed, and the guide post 58 is inserted into the guide post insertion hole 71 of the punch plate 56 from above. The flange 5 of the guide post 58 is provided in the opening recess 71a.
8a is fitted, and the guide post 58 is attached to the punch plate 5
The guide post insertion hole 71 of No. 6 is fixed.

As shown in FIGS. 5 and 7, the lower die holder 3 of the die for press working is provided with screw holes 36 at appropriate places.
A positioning hole 37 and an opening hole 38 are provided.

As shown in FIG. 5, a die holder 60 of the lower die 5 facing the punch holder 55 of the upper die 4 is arranged on the upper portion of the lower die holder 3, and the die holder 60 has the die holder 60 as shown in FIG. The fixing bolt insertion hole 80 communicating with the screw hole 36 of the lower mold holder 3, the positioning hole 81 communicating with the positioning hole 37 of the lower mold holder 3, the bolt insertion hole 82, and the positioning at appropriate places. A work hole 83 and a knockout bolt insertion hole 84 are provided.

As shown in FIGS. 5 and 7, the positioning knock pin 8 is press-fitted into the positioning hole 37 of the lower die holder 3 and the positioning hole 81 of the die holder 60 of the lower die 5, so that the die holder of the lower die 5 is pressed. 60 fixing bolt insertion hole 80
A fixing bolt 9 is inserted from above into the lower mold holder 3
The fixing bolt 9 is screwed into the screw hole 36 of the lower die 5, and the die holder 60 of the lower die 5 is positioned by the positioning knock pin 8 with respect to the lower die holder 3, as shown in FIG. Are fixed to the lower die holder 3 by fixing bolts 9.

The upper part of the die holder 60 is shown in FIGS.
As shown in FIG. 8, a box-shaped bending die 61 of the lower die 5 facing the punch plate 56 is disposed. The box-shaped bending die 61 has bolts of the die holder 60 at appropriate positions as shown in FIG. A screw hole 85 communicating with the insertion hole 82 and a positioning hole 86 communicating with the positioning hole 83 of the die holder 60.
A box-shaped bending hole 87 and a guide hole 88 into which the guide post 58 is inserted are provided.

As shown in FIGS. 5 and 7, the positioning knock pin 89 is press-fitted into the positioning hole 83 of the die holder 60 and the positioning hole 86 of the box-shaped bending die 61, and the bolt insertion hole 82 of the die holder 60 is inserted. A bolt 90 is inserted from below into the screw hole 85 of the box-shaped bending die 61.
A bolt 90 is screwed into the groove 8 and is formed in a part of the bolt insertion hole 82 of the die holder 60 and opens downward.
The head 90a of the bolt 90 is fitted to 2a, and the box-shaped bending die 61 is positioned with respect to the die holder 60 by a positioning knock pin 89, as shown in FIG. It is fixed by a bolt 90.

Box-shaped bending hole 8 of the box-shaped bending die 61
As shown in FIG. 5, the die knockout 62 of the lower die 5 facing the box-shaped bending punch 57 of the upper die 4 is disposed in the movable body 7 so as to be vertically movable.
As shown in FIG. 7, screw holes 91 are provided at appropriate locations along the same central axis as the knockout bolt insertion holes 84 of the die holder 60.

As shown in FIGS. 5 and 7, the knockout bolt 92 is inserted into the knockout bolt insertion hole 84 of the die holder 60 from below, and the die knockout 62 is inserted.
A bolt portion 92b provided at the tip of a knockout bolt 92 is screwed into the screw hole 91 of the knockout bolt 92, and a recessed portion 84a formed in a part of the knockout bolt insertion hole 84 of the die holder 60 that opens upward is provided with a knockout bolt 92. The head 92a is fitted, and the die knockout 62 is attached to the die holder 60 via the knockout bolts 92 so as to be vertically movable.

Box-shaped bending hole 8 of box-shaped bending die 61
As shown in FIGS. 5 and 7, a coil spring 93 that constantly urges the die knockout 62 upward is disposed inside the knockout bolt 92 in the inside of the coil 7. The upper surface of the box-shaped bending die 61 and the upper surface of the die knockout 62 are flush with each other because they are pushed upward by the urging force.

Next, the box-shaped bending press forming by the press die according to the second embodiment of the present invention will be described. First, the shank 2 of the upper die holder 1 is fixed to a ram (not shown) of the press machine, and the lower die holder 3 is fixed to a table (not shown) of the press machine.

Then, as shown in FIG. 8, the workpiece W is set at a predetermined position on the box-shaped bending die 61 and the die knockout 62, and then the upper die holder 1 is moved by the ram of the press machine to the lower die holder. When it is lowered toward 3, the upper die 4 moves downward toward the lower die 5 as the upper die holder 1 descends, and the punch holder 55 and the punch plate 5 of the upper die 4 are moved.
6, the box-shaped bending punch 57, the guide post 58, and the knockout pin 59 move downward toward the die holder 60, the box-shaped bending die 61, and the die knockout 62 of the lower die 5, and the guide post 58 of the upper die 4 moves. The lower end of the box-shaped bending die 61 of the lower die 5 is inserted into the guide hole 88, and the guide post 58 connects the box-shaped bending punch 57 of the upper die 4 to the box-shaped bending die 61 of the lower die 5. It guides downward toward the bending hole 87.

Lower die 5 accompanying lowering of upper die holder 1 of upper die 4
The lower end of the knockout pin 59 of the upper die 4 comes into contact with the upper surface of the die knockout 62 of the lower die 5 by the downward movement toward the upper die 4, and then the die knockout 62 applies the knockout pin 59 to the biasing force of the coil spring 78. Knockout pin insertion hole 7 of punch 57 for box bending while resisting
Push up along 6.

Next, after the lower surface of the box-shaped bending punch 57 of the upper die 4 contacts the upper surface of the die knockout 62 of the lower die 5, the box-shaped bending punch 57 causes the die knockout 62 to urge the coil spring 93. Against the die holder 6
It is pushed downward toward 0, and a part of the box-shaped bending punch 57 of the upper die 4 enters the inside of the box-shaped bending hole 87 of the box-shaped bending die 61 of the lower die 5.

A part of the box-shaped bending punch 57 of the upper die 4 is inserted into the box-shaped bending hole 87 of the box-shaped bending die 61 of the lower die 5, so that the box-shaped bending punch 57 and the box are bent. The box bending hole 87 of the shape bending die 61 folds the work into a box shape corresponding to the molded product, and the molded product 95 as shown in FIG. 9 is the box bending punch 57 of the upper mold 4 and the lower part. Box-shaped bending press molding is performed by the box-shaped bending die 61 of the mold 5.

Box-shaped bending punch 5 of upper mold 4 of molded product 95
After the box-shaped bending press forming by the box-shaped bending die 61 of the lower mold 5 and the lower mold 5 is completed, the upper mold 4 is raised by moving the upper mold holder 1 above the lower mold holder 3 by the ram of the pressing device. As the upper die holder 1 rises, the upper die holder 5 moves upward, and the pressing die returns to the original standby state before the box-shaped bending press forming shown in FIG.

When the upper die 4 moves upwardly of the lower die 5 as the upper die holder 1 moves upward, the lower surface of the box-shaped bending punch 57 of the upper die 4 becomes a die knockout 6 of the lower die 5.
After being separated from the upper surface of the upper die 2, part of the box-shaped bending punch 57 of the upper die 4 comes off from the inside of the box-shaped bending hole 87 of the box-shaped bending die 61 of the lower die 5, and the lower die The die knockout 62 of No. 5 moves upward in the die holder 60 by the biasing force of the coil spring 93 inside the box bending hole 87 of the box bending die 61, and the die knockout 6
2, the molded product 95 is removed by protruding from the box-shaped bending hole 87 of the box-shaped bending die 61.

Further, as the upper die holder 1 of the upper die 4 moves upward, the lower die 5 moves upward, so that the lower surface of the box-shaped bending punch 57 of the upper die 4 becomes higher than the upper surface of the die knockout 62 of the lower die 5. After separating upward, knockout pin 59 of upper mold 4
Moves downward along the knockout pin insertion hole 76 of the box-shaped bending punch 57 by the urging force of the coil spring 78, and the knockout pin 59 projects the molded product 95 from the box-shaped bending punch 57 and removes it.

FIG. 10 is a sectional view showing the structure of a pressing die according to the third embodiment of the present invention, and FIG. 11 is an upper view of the pressing die according to the third embodiment of the present invention. FIG. 12 is a cross-sectional view showing the structure of a mold holder and an upper mold, FIG. 12 is a cross-sectional view showing the structure of a lower mold holder and a lower mold of a press die according to the third embodiment of the present invention, and FIG. The third
FIG. 14 is a plan view of the lower die holder and the lower die of the pressing die according to the embodiment of FIG. 14, and FIG. 14 is a perspective view of the gauge plate of the lower die of the pressing die according to the third embodiment of the present invention. Is. As shown in FIG. 10, the die for press working of the present invention includes a punch holder 100 in which an upper die 4 is arranged below the upper die holder 1, and a punch plate arranged below the punch holder 100. 101 and a V-shaped bending punch 102 that is disposed below the punch holder 100 so as to penetrate the punch plate 101.
A die holder 103 which is disposed above the punch holder 100 so as to face the punch holder 100, and a V-shaped bending die 104 which is disposed above the die holder 103 and faces the punch plate 101.
And a gauge plate 105 arranged on the upper part of the V-shaped bending die 104 for setting a workpiece at a predetermined position.

In the pressing die of the present invention, the gauge plate 105 can be replaced with the V-shaped bending die 104.

As shown in FIG. 10, a shank 2 protruding upward is erected on the upper part of the upper die holder 1 of the press die, and the upper die holder 1 has the shank 2 as shown in FIG. In addition, screw holes 19 and positioning holes 20 are provided at appropriate positions.

As shown in FIG. 10, a punch holder 100 for the upper die 4 is disposed below the upper die holder 1, and the punch holder 100 is placed at an appropriate position on the punch holder 100 as shown in FIG. A fixing bolt insertion hole 106 communicating with the screw hole 19 of the holder 1, a positioning hole 107 communicating with the positioning hole 20 of the upper die holder 1, a bolt insertion hole 108, a positioning hole 109, and a bolt insertion hole. 110 is provided.

As shown in FIGS. 10 and 11, the positioning knock pin 6 is provided in the positioning hole 20 of the upper die holder 1 and the positioning hole 107 of the punch holder 100 of the upper die 4.
Is press-fitted, the fixing bolt 7 is inserted from below into the fixing bolt insertion hole 106 of the punch holder 100 of the upper die 4, and the fixing bolt 7 is screwed into the screw hole 19 of the upper die holder 1, The punch holder 100 of the die 4 is positioned with respect to the upper die holder 1 by a positioning knock pin 6, and the punch holder 100 of the upper die 4 is fixed to the upper die holder 1 with fixing bolts 7.

As shown in FIG. 10, a punch plate 101 of the upper die 4 is disposed below the punch holder 100, and the punch plate 101 has a punch plate 101 as shown in FIG.
Bolt insertion hole 108 of punch holder 100 is provided at an appropriate position.
There are provided a screw hole 111 communicating with the punch holder 100, a positioning hole 112 communicating with the positioning hole 109 of the punch holder 100, and a punch fitting hole 113 for fitting the V-shaped bending punch 102.

Positioning hole 109 of punch holder 100
Also, in the positioning hole 112 of the punch plate 101,
As shown in FIGS. 10 and 11, the positioning knock pin 114 is press-fitted, the bolt 115 is inserted into the bolt insertion hole 108 of the punch holder 100 from above, and the bolt 115 is screwed into the screw hole 111 of the punch plate 101. The head 115a of the bolt 115 is fitted into the recess 108a that is formed in a part of the bolt insertion hole 108 of the punch holder 100 and opens upward.
1 is positioned with respect to the punch holder 100 by a positioning knock pin 114, and the punch plate 101 is fixed to the punch holder 100 with bolts 115.

As shown in FIG. 10, a V-shaped bending punch 102 of the upper die 4 penetrating the punch plate 101 is arranged below the punch holder 100, and the V-shaped bending punch 102 has a lower end portion at the lower end thereof. 11, a V-shaped bending portion 116 having a V-shaped cross section is formed, and the V-shaped bending punch 102 is provided with a screw hole 117 communicating with the bolt insertion hole 110 of the punch holder 100 at an appropriate position. Has been.

Punch fitting hole 11 of punch plate 101
As shown in FIGS. 10 and 11, the V-shaped bending punch 102 is inserted into the bolt 3, and the bolt 118 is inserted into the bolt insertion hole 110 of the punch holder 100 from above. A bolt 118 is screwed into the hole 117, and a head portion 118a of the bolt 118 is fitted into a recess 110a that is formed in a part of the bolt insertion hole 110 of the punch holder 100 and opens upward. The punch 102 has bolts 118 for the punch holder 100.
It is fixed by.

As shown in FIGS. 10 and 12, the lower die holder 3 of the die for press working has screw holes 36 at appropriate places.
A positioning hole 37 and an opening hole 38 are provided.

As shown in FIG. 10, a die holder 103 of the lower die 5 facing the punch holder 100 of the upper die 4 is disposed above the lower die holder 3, and the die holder 103 is provided with
As shown in FIG. 12, a fixing bolt insertion hole 119 that communicates with the screw hole 36 of the lower mold holder 3 and a positioning hole 12 that communicates with a positioning hole 37 of the lower mold holder 3 at appropriate positions.
0, a bolt insertion hole 121, and a positioning hole 122 are provided.

The positioning hole 37 of the lower die holder 3 and the positioning hole 120 of the die holder 103 of the lower die 5 are shown in FIG.
0 and FIG. 12, the positioning knock pin 8 is press-fitted, the fixing bolt 9 is inserted from above into the fixing bolt insertion hole 119 of the die holder 103 of the lower die 5, and the screw hole 36 of the lower die holder 3 is inserted. A fixing bolt 9 is screwed into the lower die 5, and the die holder 103 of the lower die 5 is positioned with respect to the lower die holder 3 by a positioning knock pin 8, as shown in FIG. Three
It is fixed by a fixing bolt 9.

As shown in FIGS. 10 and 12, a V-shaped bending die 104 of the lower die 5 facing the punch plate 101 is disposed on the upper portion of the die holder 103, and an upper surface of the V-shaped bending die 104 is provided. As shown in FIG. 13, a V-shaped V-shaped bending groove 123 facing the V-shaped bending portion 116 of the V-shaped bending punch 102 is formed, and the V-shaped bending die 104 has an appropriate position. The screw hole 124 communicating with the bolt insertion hole 121 of the die holder 103, and the die holder 10
Positioning hole 125 communicating with the positioning hole 122 of No. 3
And a screw hole 126 that opens upward is provided.

As shown in FIGS. 10 and 12, the positioning knock pin 1 is provided in the positioning hole 122 of the die holder 103 and the positioning hole 125 of the V-shaped bending die 104.
27 is press-fitted, and the bolt insertion hole 12 of the die holder 103
1, a bolt 128 is inserted from below, and a bolt 128 is screwed into the screw hole 124 of the V-shaped bending die 104.
A bolt 128 is provided in a recess 121a formed in a part of the bolt insertion hole 121 of the die holder 103 and opening downward.
13, the V-shaped bending die 104 is positioned with respect to the die holder 103 by a positioning knock pin 127, and the V-shaped bending die 104 is fixed to the die holder 103 by a bolt 128. It is fixed by.

The upper portion of the V-shaped bending die 104 is shown in FIG.
Further, as shown in FIG. 12, a gauge plate 105 of the lower die 5 facing the punch plate 101 is provided, and the gauge plate 105 has a V-shaped bending die 104 at an appropriate position as shown in FIG. A positioning hole 129 that communicates with the positioning hole 125, a through hole 130 that faces the screw hole 126 of the V-shaped bending die 104, and a workpiece for setting at a predetermined position of the V-shaped bending die 104. A workpiece setting hole 131 is provided.

Positioning hole 12 of gauge plate 105
As shown in FIG. 10 and FIG. 12, a positioning knock pin 127 is press-fitted into the connector 9, and a bolt 132 is inserted into the through hole 130 of the gauge plate 105 from above, into the screw hole 126 of the V-shaped bending die 104. Bolts 132 are screwed together, the gauge plate 105 is positioned with respect to the V-shaped bending die 104 by a positioning knock pin 127, and the gauge plate 105 is fixed to the V-shaped bending die 104 with bolts 132.

Next, V-shaped bending press molding using a pressing die according to the third embodiment of the present invention will be described. First, the shank 2 of the upper die holder 1 is fixed to a ram (not shown) of the press machine, and the lower die holder 3 is fixed to a table (not shown) of the press machine.

Then, the workpiece is set on the gauge plate 105.
When the upper die holder 1 is lowered toward the lower die holder 3 by the ram of the pressing device after being set in the workpiece setting hole 131, the upper die 4 moves with the lower die 5 while the upper die 4 descends. Moving downwards toward the punch holder 1 of the upper die 4
00, punch plate 101 and V-shaped bending punch 10
2 is a die holder 103 for the lower die 5, V-shaped bending die 104
And move downward toward the gauge plate 105.

Lower mold 5 accompanying lowering of upper mold holder 1 of upper mold 4
As shown in FIG. 10, the V-shaped bending portion 116 of the V-shaped bending punch 102 of the upper mold 4 causes the workpiece 1 setting hole 1 of the gauge plate 105 of the lower mold 5 to move as shown in FIG.
It passes through 31 and enters the V-shaped bending groove 123 of the V-shaped bending die 104.

The V-shaped bending portion 116 of the V-shaped bending punch 102 of the upper die 4 is inserted into the V-shaped bending groove 123 of the V-shaped bending die 104 of the lower die 5, so that the V-shaped bending punch 102 is formed. The V-shaped bending part 116 and the V-shaped bending groove 123 of the V-shaped bending die 104 bend the workpiece into a V-shape corresponding to the molded product, and the molded product 1 as shown in FIG.
Reference numeral 35 is a V-shaped bending punch 102 of the upper die 4 and V of the lower die 5.
V-shaped bending press molding is performed by the shape bending die 104.

After the V-shaped bending press forming by the V-shaped bending punch 102 of the upper die 4 and the V-shaped bending die 104 of the lower die 5 of the molded product 135 is completed, the upper die holder 1 is moved down by the ram of the press machine. When the mold is raised above the mold holder 3, the upper mold 4 moves toward the upper part of the lower mold 5 as the upper mold holder 1 rises, and the pressing mold is the original before the V-shaped bending press molding. Return to the standby state.

When the upper die 4 moves upward of the lower die 5 as the upper die holder 1 rises, the V-shaped bending portion 116 of the V-shaped bending punch 102 of the upper die 4 is moved to the lower die 5. From the V-shaped bending groove 123 of the V-shaped bending die 104 and the workpiece setting hole 131 of the gauge plate 105, and the molded product 135 is removed from the V-shaped bending groove 123 of the V-shaped bending die 104. Remove.

[0095]

According to the die for press working of the present invention, since the upper die and the lower die can be selectively replaced with respect to the movable-side shared member and the fixed-side shared member, the movable-side shared member having the shank can be used. The member and fixed side common member can be used as a common member for press working in high-mix low-volume production, and the exchange work for the movable side fixed member and the fixed side common member of the upper and lower dies can be easily performed. It is possible to easily deal with press molding for small-lot production of a variety of products, and there is no need to design and manufacture a die for press work each time when press-forming different types of multi-product small-volume production. In addition, it is possible to reduce the manufacturing cost of the mold because the man-hours for manufacturing the mold are not required.

According to the die for press working of the present invention, the upper die is attached to the movable-side common member by the positioning knock pin and the fixing bolt, and the lower die is attached to the fixed-side common member. Since they are mounted by the fixing bolts, positioning and fixing to the movable side common member and the fixed side common member of the upper mold and the lower mold can be quickly performed by a simple work without any trouble.

According to the die for press working of the present invention, only by mounting the die holder of the upper die on the movable side common member, the outer die of the upper die, the die knockout and the punch for punching are shared with the die holder on the movable side. It can be attached to a member, by simply attaching the lower punch holder to the fixed-side common member, the lower die punch for punching, stripper,
Since the guide post and the biasing means can be attached together with the punch holder to the common member on the fixed side, a spacer, a backing plate, etc., such as a conventional press working die for full blank press molding, are not required at all. The number of mold parts can be reduced.

According to the die for press working of the present invention, the upper die punch holder, the box-shaped bending punch, the guide post and the knockout pin are punched by simply attaching the upper die punch holder to the movable side common member. Can be attached to the movable side common member together, and the lower die holder can be attached to the fixed side common member by simply attaching the lower die holder to the fixed side common member. The position adjustment of the upper mold and the lower mold can be omitted, and the setup time can be shortened.

According to the die for press working of the present invention, the upper punch holder and the V-shaped bending punch together with the punch holder can be used as the movable common member only by mounting the upper punch holder on the movable common member. Can be installed against
Simply attach the lower die holder to the common member on the fixed side,
The V-shaped bending die of the lower die and the gauge plate can be attached to the common member on the fixed side together with the die holder, the position adjustment of the upper die and the lower die can be omitted, and the setup time can be shortened.

According to the die for press working of the present invention, the gauge plate can be exchanged for the V-shaped bending die, so that the gauge plate can be arbitrarily selected according to the molded product of high-mix low-volume production. Can be exchanged.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of a press die according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the structures of an upper die holder and an upper die of a press working die according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view showing the structures of a lower die holder and a lower die of the press working die according to the first embodiment of the present invention.

FIG. 4 is a plan view of a molded product formed by the pressing die according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the structure of a pressing die according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view showing structures of an upper die holder and an upper die of a press working die according to a second embodiment of the present invention.

FIG. 7 is a cross-sectional view showing the structures of a lower die holder and a lower die of a press working die according to a second embodiment of the present invention.

FIG. 8 is a plan view of a lower die holder and a lower die of a press working die according to a second embodiment of the present invention.

FIG. 9 is a front view of a molded product using a press die according to a second embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a structure of a pressing die according to a third embodiment of the present invention.

FIG. 11 is a cross-sectional view showing the structures of an upper die holder and an upper die of a press working die according to a third embodiment of the present invention.

FIG. 12 is a cross-sectional view showing the structures of a lower die holder and a lower die of a press die according to a third embodiment of the present invention.

FIG. 13 is a plan view of a lower die holder and a lower die of a press working die according to a third embodiment of the present invention.

FIG. 14 is a perspective view of a lower gauge plate of a press die according to a third embodiment of the present invention.

FIG. 15 is a front view of a molded product formed by a press die according to a third embodiment of the present invention.

FIG. 16 is a cross-sectional view showing the structure of a conventional pressing die for full blanking press forming.

[Explanation of symbols]

1 Upper mold holder 2 shank 3 Lower mold holder 4 Upper mold 5 Lower mold 6 Positioning knock pin 7 Fixing bolt 8 Positioning knock pin 9 Fixing bolt 10 Die holder 11 External die 12 dyno knockout 13 Punch for punching 13a large diameter part 14 Punch holder 15 External punch 16 strippers 17 Guide post 17a flange 18 coil spring 19 screw holes 20 Positioning hole 21 Fixing bolt insertion hole 22 Positioning hole 23 Bolt insertion hole 23a recess 24 Positioning hole 25 Punch insertion hole for punching 25a recess 26 Knockout bolt insertion hole 26a recess 27 screw holes 28 Positioning hole 29 Holes for punching 30 Positioning knock pin 31 Volts 31a head 32 Punch insertion hole for punching 33 screw holes 34 Knockout bolt 34a head 34b bolt part 35 coil spring 36 screw holes 37 Positioning hole 38 Opening hole 39 Fixing bolt insertion hole 40 Positioning hole 41 Bolt insertion hole 41a recess 42 Positioning hole 43 Taper hole 44 Guide post insertion hole 44a recess 45 through hole 46 screw holes 47 Positioning hole 48 Holes for punching 49 Positioning dowel pin 50 volts 50a head 51 Punch fitting hole 52 Guide hole 53 Molded products 53a round hole 55 punch holder 56 punch plate 57 Box-shaped bending punch 58 Guide post 58a flange 59 Knockout pin 59a flange 60 die holder 61 Box bending die 62 dyno knockout 63 Fixing bolt insertion hole 64 Positioning hole 65 bolt insertion hole 65a recess 66 Positioning hole 67 bolt insertion hole 67a recess 68 screw holes 69 Positioning hole 70 Punch fitting hole 71 Guide post insertion hole 71a recess 72 Positioning knock pin 73 bolts 73a head 74 screw holes 75 Spring hole for storing 76 Knockout pin insertion hole 77 volts 77a head 78 coil spring 79 steps 80 fixing bolt insertion hole 81 Positioning hole 82 Bolt insertion hole 82a recess 83 Positioning hole 84 Knockout bolt insertion hole 84a recess 85 screw holes 86 Positioning hole 87 Box bending hole 88 Guide hole 89 Positioning knock pin 90 volts 90a head 91 screw holes 92 Knockout bolt 92a head 92b bolt part 93 coil spring 95 molded products 100 punch holder 101 punch plate 102 V-shaped bending punch 103 die holder 104 V-shaped bending die 105 gauge plate 106 Fixing bolt insertion hole 107 Positioning hole 108 Bolt insertion hole 108a recess 109 Positioning hole 110 bolt insertion hole 110a recess 111 screw holes 112 Positioning hole 113 Punch fitting hole 114 Positioning Dowel Pin 115 volts 115a head 116 V-shaped bending part 117 screw holes 118 volts 118a head 119 Fixing bolt insertion hole 120 positioning holes 121 Bolt insertion hole 121a recess 122 Positioning hole 123 V-shaped bending groove 124 screw holes 125 Positioning hole 126 screw holes 127 Positioning Dowel Pin 128 volts 128a head 129 Positioning hole 130 through holes 131 Workpiece setting hole 132 volts 135 Molded product 200 Upper mold holder 200a shank 201 Upper mold 202 spacer 203 backing plate 204 punch punch 205 punch holder 206 Outer die 207 die holder 208 dyno knockout 210 Lower mold holder 211 Lower mold 212 backing plate 213 Punch holder 214 Outside punch 215 stripper 216 Guide post W Workpiece

Claims (6)

[Claims] 1. A movable-side shared member having a shank, a fixed-side shared member disposed below the movable-side shared member, and a standardized selection corresponding to different types of press forming of a workpiece. Upper molds for high-mix low-volume production of multiple products, and multiple lower molds for high-mix low-volume production of selectable products standardized for press molding of different types of workpieces And a lower die opposed to the upper die is detachably provided on an upper portion of the fixed-side shared member. Processing mold. 2. The upper die is attached to the movable-side common member by a positioning knock pin and a fixing bolt,
The press die according to claim 1, wherein the lower die is attached to the fixed-side common member by a positioning knock pin and a fixing bolt. 3. The upper die is provided in a lower portion of the movable side common member, a die for outer shape disposed in a lower portion of the die holder, and provided so as to be retractable from the outer die. Die knockout, and has a punch for punching provided in the die holder to penetrate the outer shape punching die and the die knockout, the lower die,
A punch holder disposed above the fixed-side common member so as to face the die holder, an outer shape punch disposed above the punch holder so as to face the die knockout, and an outer shape punch. A stripper that is arranged so as to be vertically movable so as to face the outer shape drawing die, a guide post that vertically guides the stripper installed upright on the punch holder, and a stripper that is directed upward. The pressing die according to claim 1, further comprising an urging unit that constantly urges. 4. The upper die comprises a punch holder disposed below the movable-side shared member, a punch plate disposed below the punch holder, and the punch plate disposed below the punch holder. A box-shaped bending punch that is arranged to penetrate therethrough, a guide post that is vertically provided on the punch plate, and a knockout pin that is provided in the box-shaped bending punch so that the box-shaped bending punch is retractable. A die holder disposed above the fixed-side shared member so as to face the punch holder, a box-shaped bending die disposed above the die holder so as to face the punch plate, and the box-shaped bending die. The die has a die knockout arranged so as to be able to project and retract so as to face the box-shaped bending punch.
The die for press working described in. 5. The upper die includes a punch holder disposed below the movable-side shared member, a punch plate disposed below the punch holder, and the punch plate disposed below the punch holder. The lower die has a V-shaped bending punch disposed therethrough, and the lower die has a die holder disposed above the fixed-side shared member so as to face the punch holder, and the die holder is disposed above the die holder. A V-shaped bending die, which is disposed to face the punch plate, and a gauge plate, which is disposed above the V-shaped bending die, sets a workpiece at a predetermined position. The die for press working according to 1. 6. The press die according to claim 5, wherein the gauge plate is replaceable with respect to the V-shaped bending die.