JPH06126346A - Forming die - Google Patents

Abstract

PURPOSE:To facilitate forming in different dimensions without the need of attaching, removing and exchanging metallic dies. CONSTITUTION:An intermediate punch member 11 fixedly connected to the body 7 of a metallic die that is connected to a press driving source. To the intermediate punch member 11, a cylindrical intermediate punch guide member 17 enclosing the outer periphery of the member 11 is connected movably in the direction of the axial line and by a prescribed quantity only. Outside the intermediate punch guide member 17, a punch member supporting drum 25 is rotatably provided, and plural pieces of punch members 29 are provided in the punch member supporting drum 25 so as to be used alternatively. Also, an elastic member 71 for reverse pushing is attached to a die holder 67. Plural die members 75 are provided in a circular die member supporting drum 73 enclosing the die holder 67, and a reverse pushing counter member 77 is provided inside each die member 75. Through the rotational displacement of the die member supporting drum 63, the plural die members 75 are alternatively used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die, and more particularly to a molding die for cutting and bending a bridge or the like and for embossing.

[0002]

2. Description of the Related Art Plate material forming processing such as cutting and bending of bridges and embossing is generally performed by a pair of punches and dies.

[0003]

In the conventional plate material forming process using a punch and a die, a separate punch and die are required for each different forming dimension and depth such as cut and raised, unevenness and the like. Is.

This not only increases the required number of punches and dies, but also requires changing the mounting of the punches and dies on the processing machine every time the molding size and depth are changed, which causes a reduction in work efficiency. become.

The present invention has been made by paying attention to the above-mentioned problems in the conventional plate forming process, and the attachment of the die to the processing machine is changed every time the forming size and the depth are changed. It is intended to provide a molding die that does not require.

[0006]

SUMMARY OF THE INVENTION According to the present invention, the above object is to provide a die main body connected to a press drive source, an intermediate punch member fixedly connected to the die main body, and the intermediate punch. A cylindrical intermediate punch guide member that is connected to the member so as to be movable by a predetermined amount in the axial direction and that surrounds the outer periphery of the intermediate punch member; and the intermediate punch member is provided between the intermediate punch member and the intermediate punch guide member. An elastic member urging the axial punches away from each other, a punch holder that supports the intermediate punch guide member, and an annular punch member support that is rotatably supported by the punch holder and that surrounds the intermediate punch member and the punch holder. A pan, and a plurality of punch members provided on the punch member supporting drum so as to be spaced apart from each other in the circumferential direction so as to be movable in the radial direction. A molding die and a die holder, wherein a plurality of punch members are selectively supported by a position corresponding to the intermediate punch member by rotational displacement of the member supporting drum; A reverse pressing elastic member mounted on the die holder, an annular die member supporting drum that is rotatably supported by the die holder and surrounds the die holder, and a plurality of members that are spaced apart from each other in the circumferential direction on the die member supporting drum. A plurality of die members, and a reverse pressing counter member fitted and mounted inside each of the die members so as to be movable in the axial direction. This is achieved by a molding die characterized in that the counter-pushing counter member is alternatively configured to be held at a position corresponding to the counter-pushing elastic member.

[0007]

According to the above-described structure, the plurality of punch members are selectively brought to the positions corresponding to the intermediate punch member by the rotational displacement of the punch member supporting drum, and the die member supporting drum is rotated. Due to the displacement, the reverse pressing counter member of the plurality of die members is selectively brought to a position corresponding to the reverse pressing elastic member, so-called tool tip change is performed, and molding of different molding dimensions is performed by the mold. It can be done without the need for installation, removal and replacement.

[0008]

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 4 show an embodiment of a molding die according to the present invention. In these figures, reference numeral 1 is a punching die, and reference numeral 3 is a die die.

The punch forming mold 1 has a shank portion 5
Has a U-shaped mold body 7 having an U-shape, and an intermediate punch member 11 is fixedly connected to the mold body 7 by a bolt 9.

The intermediate punch member 11 has a shaft-shaped portion 13 and a flange-shaped portion 15 formed on the upper end side of the shaft-shaped portion 13, and the outer periphery of the shaft-shaped portion 13 has a cylindrical shape so as to surround it. The intermediate punch guide member 17 of FIG. Intermediate punch guide member 17
Is connected to the intermediate punch member 11 so as to be movable by a predetermined amount in the axial direction by a plurality of through bolts 19 provided on the flange portion 15 of the intermediate punch member 11. Urethane rubber 21 as an elastic member is provided between the intermediate punch member 11 and the intermediate punch guide member 17 for each through bolt 1.
It is provided for every 9. The urethane rubbers 21 each have a tubular shape, and the through bolts 19 pass through the respective center holes of the urethane rubbers 21. The intermediate punch member 11 and the intermediate punch guide member 1
7 and 7 are urged in a direction away from each other in the axial direction.

A punch holder 23 for supporting the intermediate punch guide member 17 is engaged with the outer side portion of the intermediate punch guide member 17. Flange-shaped portion 15 of the intermediate punch member 11
As shown in FIG. 1, the punch holder 23 and the punch holder 23 have a circular side surface shape as a whole, and an annular punch member supporting drum 25 surrounding them is provided on the outer peripheral portion thereof.
Are arranged.

The punch member support drum 25 is rotatably supported by the punch holder 23, and is rotatably displaced around the flange-shaped portion 15 of the intermediate punch member 11 and the punch holder 23 about its own central axis. .

On the punch member supporting drum 25, a plurality of cylindrical plate pressing members 27 are radially fixed and mounted in the circumferential direction, and each of the plate pressing members 27 has a punch member 29. Are fitted so as to be movable in the axial direction of the plate pressing members 27.

As shown in FIG. 3, the punch member 29
A neutral pin 31 is planted in each of the
Each of the lock key 33, horo set bolt 35,
The yoke-shaped holder 39 is fixed by the fixing screw 37. The yoke-shaped holder 39 supports upper and lower return rods 45 and 47 which are biased by springs 41 and 43, respectively.
The return rods 45 and 47 are engaged with the neutral pin 31 from above and below, respectively, and the spring force of the springs 41 and 43 causes the punch member 29 to move.
Is held in the initial position as shown in FIG.

Further, as shown in FIG. 4, a click stop recess 49 is formed in each of the punch members 29,
Each of the plate pressing members 27 is provided with a click stop ball 53 elastically pressed by a spring 51, and the punch member 29 is shown in FIG. 1 by fitting the click stop ball 53 into the click stop recess 49. The stability of being located in the initial position is improved.

A motor 55 is mounted on the die main body 7, and an output shaft 57 of the motor 55 is drivingly connected to the punch member supporting drum 25 through a universal joint 59 so that one of the punch members 29 can be selected. Specifically, the punch member support drum 25 is indexed and rotationally driven so as to be positioned at a position corresponding to the shaft-shaped portion 13 of the intermediate punch member 11.

The die-side molding die 3 has a U-shaped die body 63 having a shank portion 61.
3 has a die holder 6 having a circular side surface with bolts 65.
7 is fixedly connected.

A urethane rubber 71 as an elastic member for reverse pressing is fixedly mounted on the upper portion of the die holder 67 by a bolt 69, and the urethane rubber 71 is exposed at the upper end surface to the outer peripheral surface of the upper portion of the die holder 67.

On the outer peripheral portion of the die holder 67, an annular die member supporting drum 73 is arranged so as to surround the die holder 67.

The die member supporting drum 73 is the die holder 6
7 is rotatably supported, and is rotatably displaced around the die holder 67 around its own central axis.

The die member supporting drum 73 has a die member 75.
A plurality of them are radially fixed to each other in a circumferential direction, and each die member 75 is fitted with a counter-pushing counter member 77 movably in the axial direction of each die member 75. There is.

A motor 79 is mounted on the die main body 63, an output shaft 81 of the motor 79 is drivingly connected to the die member supporting drum 73, and a reverse pressing counter member 77 of the die member 75 is alternatively made of urethane. The die member support drum 73 is indexed and rotationally driven so as to be located at a position corresponding to the upper end surface of the rubber 71.

Although not shown, the die member 75 and the reverse push counter member 77 are provided with a quick stop mechanism as shown in FIG. 4, whereby the reverse push counter member 77 is shown in FIG. It is designed to be held at the initial position.

Next, the molding die 1 having the above-mentioned structure,
The plate material forming process using No. 3 will be described.

The punch-side (upper side) molding die 1 is connected to the shank portion 5, and the die-side (lower side) molding die 3 is connected to the drive portions A and B of the robot or the like at the shakun portion 61. .
Then, the punch member support drum 25 of the punch-side molding die 1 is indexed and rotationally displaced by the motor 55, and the die member support drum 73 of the die-side molding die 3 is indexed and rotationally displaced by the motor 79, respectively. Is located at a position corresponding to the shaft-like portion 13 of the intermediate punch member 11, and the reverse pressing counter member 77 of the die member 75 is made of urethane rubber 71.
Punch member 29 to be used at a position corresponding to
The die member 75 is selectively set.

When the lower molding die 3 is the fixed side and the upper molding die 1 is the movable side, the mold body 7 of the molding die 1 is used.
When the molding die 1 is lowered by applying a downward driving force to the plate member W placed on the upper surface of the die member 75 located directly above the lower molding die 3 (in use position). The lower bottom surface of the plate pressing member 27 at a position (use position) directly below the upper molding die 1 comes into contact with the plate material W, and the plate material W is sandwiched between the lower bottom surface of the plate pressing member 27 and the upper surface of the die member 75, and these are Clamped.

As a result, the upper molding die 1 is further lowered, and the downward driving force applied to the mold body 7 of the upper molding die 1 is transmitted to the intermediate punch member 13.
At this time, the intermediate punch member 13 has the urethane rubber 21 with respect to the intermediate punch guide member 15 which is already immobile.
While elastically deforming, descend. This intermediate punch member 13
The downward driving force is transmitted to the corresponding punch member 29 located right below by the downward movement, and further passes through the plate W and the reverse pressing counter member 7 located directly above the lower molding die 3.
7, the reverse pressing counter member 77 located right above the molding die 3 descends while compressing and deforming the urethane rubber 71.

Due to the compressive deformation of the urethane rubbers 21, 71, the punch member 29 and the counter-pushing counter member 77 sandwich the plate material W in the vertical direction with respect to the stationary plate pressing member 27 and die member 75. Downward, and the plate material W is downwardly embossed.

The lowering of the punch member 29 during the embossing described above resists the spring force of the spring 43 and returns rod 47.
, The upper punch member 29 returns to the initial position by the spring force of the spring 43, and the reverse push counter member 77 is released.
Is returned to the initial position by the restoring force of the urethane rubber 71.

When performing embossing with different dimensions and depths, the punch member supporting drum 25 of the punch-side forming die 1 is driven by the motor 55, and the die member supporting drum 73 of the die-side forming die 3 is moved. Each of them is indexed and rotationally displaced by a motor 79, and a reverse pressing counter member 77 of a punch member 29 located at a position corresponding to the shaft-like portion 13 of the intermediate punch member 11 and a die member 75 positioned at a position corresponding to the urethane rubber 71, that is, The punch member 29 and the die member 75 used are changed.

As a result, the dimensions and depth of the embossing molding can be changed only by indexing and rotationally displacing the punch member supporting drum 25 of the molding die 1 and the die member supporting drum 73 of the molding die 3, respectively.

In the above, the present invention has been described in detail with respect to a specific embodiment, but the present invention is not limited to this, and various embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.

[0034]

As can be understood from the above description, according to the molding die of the present invention, the plurality of punch members are selectively positioned at the positions corresponding to the intermediate punch member by the rotational displacement of the punch member supporting drum. Further, the tool tip change is performed by the counter displacement of the plurality of die members being selectively brought to the position corresponding to the counter elastic member by the rotational displacement of the die member supporting drum. I,
Molding with different molding sizes and depths can be performed without the need to attach and detach and replace the molds, which can reduce the number of required molds and the setup time.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a molding die according to the present invention.

FIG. 2 is a side view showing an embodiment of a molding die according to the present invention.

FIG. 3 is an enlarged cross-sectional view showing a supporting portion with a returning mechanism of a punch member in a molding die according to the present invention.

FIG. 4 is an enlarged sectional view showing a support portion with a quick stop of a punch member in a molding die according to the present invention.

[Explanation of symbols]

 1, 3 Molding die 7 Mold body 13 Intermediate punch member 17 Intermediate punch guide member 21 Urethane rubber 23 Punch holder 25 Punch member supporting drum 29 Punch member 63 Mold body 67 Die holder 71 Urethane rubber 73 Die member supporting drum 75 Die member 77 Reverse push counter member

Claims (2)

[Claims] 1. A mold body connected to a press drive source,
An intermediate punch member fixedly connected to the mold body; a cylindrical intermediate punch guide member connected to the intermediate punch member so as to be movable in a predetermined amount in the axial direction and surrounding the outer periphery of the intermediate punch member; An elastic member that is provided between the punch member and the intermediate punch guide member and urges the two members in a direction away from each other in the axial direction, a punch holder that supports the intermediate punch guide member, and a rotatable member from the punch holder. An annular punch member supporting drum that is supported and surrounds the intermediate punch member and the punch holder, and a plurality of punch members that are spaced apart from each other in the circumferential direction on the punch member supporting drum and are movable in the radial direction. And a plurality of punch members are selectively held at positions corresponding to the intermediate punch member by rotational displacement of the punch member supporting drum. Molding die, characterized in that it is configured to be. 2. A die holder, a back-pressing elastic member mounted on the die holder, an annular die member supporting drum rotatably supported by the die holder and surrounding the die holder, and a circumferential direction on the die member supporting drum. A plurality of die members provided to be spaced apart from each other and a counter-pushing counter member fitted and mounted inside each of the die members so as to be movable in the axial direction are provided. A molding die, wherein the reverse pressing counter member of a plurality of die members is selectively urged to a position corresponding to the reverse pressing elastic member by dynamic displacement.