JP2966302B2 - Multi punch mold equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-punch die apparatus provided with a plurality of punches having different shapes and dimensions, for example. The present invention relates to a multi-punch die apparatus capable of easily performing a work of attaching and detaching a punch to and from a punch holder.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No.
There is 31356 number. In this prior example, a pressing plate provided with a pressing portion in a part of a circumferential groove engaging the heads of a plurality of punches supported movably up and down on a punch holder is positioned relatively to the punch holder. It is integrally connected to a punch head that is rotatably and vertically movable, but the punch head holder that supports the punch head so as to be vertically movable is rotatably fitted to the punch holder. O-ring between the inner peripheral groove provided on the inner peripheral surface of the punch holder and the outer peripheral groove provided on the outer peripheral surface of the punch head holder so that the punch head holder does not come off from the punch holder. And so on.

[0003]

According to the above configuration, since the coupling force between the punch holder and the punch head holder is based on the O-ring, there is a problem that the punch head holder is sometimes easily pulled out of the punch holder.

Also, when disassembling and assembling, when the heads of a plurality of punches are engaged with the circumferential grooves formed on the lower surface of the pressing plate, the heads of the punches are inserted into the holes formed above the circumferential grooves. In some cases, it is difficult to rotate the pressing plate with respect to the punch holder, so that the assembling operation is troublesome.

[0005] Furthermore, when nibbling is performed with a fine punch, there is a problem in that the guide function of the punch is insufficient and a galling phenomenon may occur.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a punch holder which is detachably mounted on a rotary holder rotatably supported on a holder body. A plurality of punches movably supported by a punch holder are provided in a state lifted to a predetermined position by a lifter spring, and a pressing portion is provided in a part of a circumferential groove in which the head of each of the punches is engaged. A pressing plate provided with a rotatable and vertically movable inside the punch holder, a punch head holder rotatably relative to the punch holder and detachably supported by the punch holder, An elevating member having a punch head at its upper end is provided so as to be vertically movable, and the elevating member and the pressing plate are detachably connected to each other. A multi-punch die apparatus, in which a plurality of pressing pins for pressing in a vertical direction are provided on the punch head holder so as to be vertically movable and are provided by pressing and pressing downward, and each punch is detachably mounted on the punch holder. In the above, between the punch holder and the pressing plate, an elastic member for constantly pressing and urging the pressing plate upward is provided, and the upward movement of the pressing plate with respect to the punch holder is fixed. An up-movement regulating member that can be regulated at a height position is provided so as to be vertically movable relatively to the punch holder or the pressing plate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG.
Is used by being attached to the holder body 3 in a punch press (not shown) such as a turret punch press. The holder main body 3 supports a plurality of general large punches (not shown) such as an upper turret in a turret punch press.

A cylindrical outer cylinder 5 is integrally attached to the holder body 3 via a plurality of bolts. A cylindrical rotary holder 7 is rotatably fitted and supported on the outer cylinder 5. I have.

An upper portion of the rotary holder 7 is provided with a flange 7F which is in sliding contact with the upper surface of the outer cylinder 5, and a plurality of ring members 9 for holding the outer cylinder 5 between the upper and lower flanges 7F. It is attached integrally via the bolts.

Accordingly, the rotary holder 7 is supported so as to be rotatable only in a state in which the vertical movement of the rotary holder 7 is restricted with respect to the outer cylinder 5. In order to rotate the rotary holder 7, a ring-shaped worm wheel 11 is integrally mounted on the upper surface of the rotary holder 7 with a plurality of bolts, and the worm wheel 11 is rotatably attached to the holder body 3. A supported worm gear (not shown) is engaged.

The worm gear is driven to rotate by a servomotor (not shown), and the worm wheel 11 is indexed and positioned at an arbitrary rotation angle from the origin position by appropriately controlling and rotating the servomotor by feedback control. Is what you can do.

The worm wheel 11 is provided with an origin dog 13 so that the worm wheel 11 can be easily positioned at the origin position. A sensor 15 such as a limit switch for outputting the control signal to the control device is provided.

Therefore, when the worm wheel 11 is rotated, the rotation of the worm wheel 11 is stopped when the sensor 15 detects the dog 13, so that the worm wheel 11 can be easily positioned at the origin position.

The inner peripheral surface of the rotary holder 7 is so fixed that the positional relationship in the rotational direction between the multi-punch die apparatus 1 and the rotary holder 7 that is attached to and detached from the rotary holder 7 is always kept constant. Has a positioning key 17 integrally attached by bolts.

A lifter ring 19 is provided on the upper surface of the holder main body 3 so as to be vertically movable in order to support the multi-punch die apparatus 1 with respect to the rotary holder 7 so as to be vertically movable.

More specifically, the lifter ring 19 has a short cylindrical shape, and a plurality of ring members 21 integrally mounted on the outer side of the upper end via a plurality of bolts are integrally formed with a cylindrical spring seat 23. It is attached to the target. And it is urged upward by a plurality of lifter springs 25 elastically mounted between the spring seat 23 and the holder body 3.

The upward movement of the spring seat 23 is regulated by a regulating bolt 27 which passes through the spring seat 23 from above and is screwed to the holder body 3.

The lower end of the lifter ring 19 passes through the inside of the worm wheel 11 and is located inside the rotary holder 7, and the lower end of the lifter ring 19 is provided with the multi-punch mold device. 1 is formed so as to protrude inward.

At an appropriate height of the lifter ring 19, a fixed key 29 protruding inward is provided.

The multi-punch die apparatus 1 includes a punch holder 3 detachably mounted on the rotary holder 7.
1 is provided. The punch holder 31 has a substantially cylindrical shape, and a key groove 33 with which the positioning key 17 can be engaged and disengaged is formed in a vertical direction on an outer peripheral surface to be fitted to the rotary holder 7, and an upper end portion thereof is formed. The lifter ring 19
Is provided with a flange portion 31F supported by the inner flange 19F.

A thick punch mounting portion 35 is provided in the vertical direction on the inner side near the lower portion of the punch holder 31, and a through hole 37 is formed in the center of the punch mounting portion 35 so as to be concentric. A plurality of punch mounting holes 39 penetrating vertically are provided at equal intervals.

A small-diameter punch 41 is vertically movably mounted in each of the punch mounting holes 39.
In 1, rotation of the punch 43 relative to the punch holder 31 is restricted by engaging a key 43 attached to each punch 41 with a key groove 39 </ b> K of the punch mounting hole 39.

Each of the punches 4 is
A ring-shaped spring seat plate 45 is attached to the lower surface of the punch holder 31 via a plurality of bolts in order to support the plate 1 at a predetermined position. A lifter spring 49 for supporting each punch 41 in a lifted state is provided between the ring member 47 and the lifter spring 49.

A guide holder plate 51 is mounted on the lower surface of the plate 45, and a ring-shaped punch guide 53 for guiding the lower end of each punch 41 is detachably supported on the guide holder plate 51. ing. The guide holder plate 51 and the punch guide 5
The configuration of No. 3 is the same as the configuration disclosed in the above-described prior example, and thus the detailed description is omitted.

A punch head holder 55 is supported above the punch holder 31 so as to be relatively rotatable.
On the outer peripheral surface of the punch head holder 55, there is formed a key groove 55K in which the fixed key 29 provided on the lifter ring 19 can be freely engaged and disengaged. An elevating member 59 integrally mounted via a through hole is provided so as to penetrate vertically, and a pressing plate 61 for pressing the punches 41 is integrally mounted on a lower end portion of the elevating member 59. is there.

The rotation of the elevating member 59 is restricted by a key 63 provided on the elevating member 59. That is, the elevating member 59 is supported on the punch head holder 55 so that it can only move up and down. A strong stripper spring (elastic body) 65 is mounted between the punch head holder 55 and the punch head 57.

The pressing plate 61 has a disk shape rotatably fitted in the punch holder 31 and is integrated with the punch head 57 and the like via a bolt 67 penetrating the axis of the elevating member 59. Elevating member 5
Rotation relative to the elevating member 59 is reliably restricted via a pin 69 attached to the mounting member 9.

On the lower surface of the pressing plate 61, a T-shaped peripheral groove 71 with which each head 41H of each punch 41 is engaged.
A vertical through hole 71H is formed at a position where the circumferential groove 71 corresponds to each punch 41.
A pressing portion 73 is formed in a state in which only one through hole 71H is left without being provided.

The head 41 of each punch 41 is provided at a plurality of positions of the punch head holder 55 corresponding to the through holes 71H.
A pressing pin 75 for pressing H downward is provided movably up and down. Each pressing pin 75 is provided with a spring 79 elastically mounted between the female screw 77 and the head of each pressing pin 75.
Is simply urged downward.

In order to push up and hold the pressing plate 61 at a predetermined position during assembly, a ring-shaped spring seat 81 fixed between the lower surface of the punch holder 31 and the spring seat plate 45 and the pressing plate 61 are used. An elastic member 83 is mounted between them.

Further, in order to restrict the upward movement of the pressing plate 61 and the like from the punch holder 31, an upward movement restricting member 85 such as a bolt penetrating the spring seat 81 from below is used. It is screwed and fixed.

Each die (not shown) corresponding to each of the punches 41 is supported by a die holder (not shown) rotatably supported by a lower holder facing the holder body 3. The die holder is rotated in the same direction in synchronization with the rotary holder 7, and a configuration in which the die holder is rotated in the same direction in synchronization with the rotary holder 7 is already known. A detailed description of the die support configuration is omitted.

In the configuration described above, when the worm wheel 11 is rotated by driving the servo motor, the punch holder 31 is rotated via the rotary holder 7 and the positioning key 17. On the other hand, since the punch head holder 55 cannot be rotated via the fixed key 29 and the lifter ring 19, the head 41H of each punch 41 pivots in the circumferential groove 71 of the pressing plate 61 by the rotation of the punch holder 31. Moving.

Accordingly, the desired punch 41 can be indexed and positioned below the pressing portion 73 of the pressing plate 61.

The die holders supporting the respective dies corresponding to the respective punches 41 are also indexed and positioned in the same direction in synchronization with each other, and the dies forming a pair with the respective punches 41 always maintain the correspondence. It will be positioned.

As described above, after the desired punch 41 is positioned below the pressing portion 73 of the pressing plate 61, the punch head 57 is pressed by a striker (not shown) which is vertically movable on the punch press. When the pressure plate 61 is lowered against the lifter spring 25 and the stripper spring 65, the pressing plate 61 is lowered integrally via the lifting member 59, and the predetermined punch 41 is pressed by the pressing portion 73.
Is lowered against the lifter spring 49.

At this time, the other punches 41 are configured to relatively push up the pressing pins 75 against the springs 79, and do not punch a workpiece (not shown).

After the work is punched out by the predetermined punch 41 and the striker is raised, the punch 4 is moved by the action of the stripper spring 65.
The punch 1 is pulled out of the work, and the punch 41 is returned to the original position by the action of the lifter springs 25 and 49.

In the above configuration, each punch 41
In order to carry out the attachment / detachment exchange, the punch head 57 is appropriately held and lifted, so that the entire multi-punch die apparatus 1 can be pulled upward from the rotary holder 7 and the lifter ring 19.

When the punch holder 31 is lifted as described above, the punch holder 31 is supported by the upward movement restricting member 85, and the punching plate 61 is prevented from coming out of the punch holder 31. Therefore, the punch head holder 55, the pressing plate There is no possibility that 61 or the like comes off from the punch holder 31 and the handling is easy.

After removing the multi-punch die apparatus 1 from the rotary holder 7 and the like, when the bolt 67 is loosened, the punch head holder 55 and the elevating member
9 can be removed upward. Therefore, the punch 41 can be removed and replaced via the through hole 71H communicating with the peripheral groove 71 formed on the lower surface of the pressing plate 61.

When the punch 41 located below the pressing portion 73 of the pressing plate 61 is to be detached and replaced, the pressing plate 61 is relatively rotated with respect to the punch holder 31 and the punch 41 is pressed from above. It is necessary to move the pressure part 73. At this time, all the heads 41H of the punches 41 are
Must be located within 1.

In this embodiment, the pressing plate 61 is urged upward by the action of the elastic member 83.
And an upper movement restricting member 8 screwed to a lower portion of the pressing plate 61.
Since the head at the lower end of the punch 5 abuts against the spring seat 81 and is always held at a constant height, the head 41 of each punch 41
Since H is located in the circumferential groove 71 of the pressing plate 61 and does not enter the through hole 71H,
The rotation of the pressing plate 61 relative to the punch holder 31 can be easily performed.

That is, according to the present embodiment, the pressing plate 61 is not biased upward by the elastic member 83 to be supported by the elastic member 83, so that the pressing plate 61 is not inclined. The attachment / detachment / replacement of the punch 41 by rotating the pressing plate 61 can be easily performed.

After the necessary punch 41 is detached and replaced,
By fitting the punch head holder 55 back into the punch holder 31 and then tightening the bolt 67, the pressing plate 61 can be integrally attached to the elevating member 59 again.

At this time, an appropriate tool is engaged with the upward movement restricting member 85 and held in a fixed state, so that the bolt 6
7 can be reliably and easily performed.

FIG. 2 shows an embodiment in which one disk-shaped plate holding plate 87 is mounted on the lower surface of the spring seat plate 45 via a plurality of bolts 89 instead of the guide holder plate 51 and the punch guide 53. It is a bottom view.

The plate holding plate 87 has a guide hole 9 for guiding the lower end of the small diameter of each of the punches 41 so as to be vertically movable.
A number 1 is provided corresponding to each punch 41.

The guide holes 91 and the lower ends of the punches 41 are fitted in a substantially close contact state so as to restrict bending even when the lower ends of the punches 41 are subjected to a lateral component. I have.

Therefore, when nibbling is performed by the punch 41, a lateral component force acts on the small-diameter portion at the lower end of the punch 41, but the lower end is guided by the guide hole 91 of the holding plate 87 in the state of being closely contacted. In addition, since the holding plate 87 has high rigidity, bending due to a lateral component force is suppressed, and it is possible to prevent a galling phenomenon from occurring with the die.

It should be noted that the present invention is not limited to the above embodiment, but can be embodied in other modes by making appropriate changes. That is, for example, the upward movement restricting member 8
5 is screwed up and down on the spring seat 81 so that the upper head can be moved up and down relatively to the pressing plate 61 and the upper limit of the pressing plate 61 is restricted by the upper head. It is also possible.

[0052]

As will be understood from the above description of the embodiment, in the present invention, the plurality of punches 41 supported up and down by the punch holder 31 are lifted to a predetermined position by the lifter spring 49. Peripheral groove 7 engaged with the head 41H of each punch 41
The pressing plate 61 provided with a pressing portion 73 in one part of the lifting / lowering member 5 movably supported vertically by a punch head holder 55 detachably supported by the punch holder 31.
A plurality of pressing pins 75 detachably connected to the punch head 9 and pressing the head 41H of each punch 41 downward are provided on the punch head holder 55 so as to be vertically movable, and are pressed and urged downward. The lifting member 5
When the punching work of the workpiece is performed by pressing the punch head 57 provided at the upper end of the punch 9, the punch 41 corresponding to the pressing plate 61 and the pressing unit 73 is lowered integrally,
The other punches 41 are configured to push up the pressing pins 75 relatively, and are not lowered with respect to the punch holder 31.

[0053]

Therefore, when the lifting member 59 and the punch head holder 55 are detached from the punch holder 31 in order to attach and detach the punch 41, the pressing plate 61 is moved by the action of the elastic member 83 and the upward movement restricting member 85. The punches 41 are held at a predetermined height position without being inclined with respect to each other. On the other hand, each punch 41 is supported in a state where it is lifted to a predetermined position by the action of the lifter spring 49. Since the portion 41H is always located in the circumferential groove 71 of the pressing plate 61, the rotation of the pressing plate 61 relative to the punch holder 31 is easy, and the punch by rotating the pressing plate 61 41 can be easily attached and detached and replaced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a mold apparatus according to the present embodiment.

FIG. 2 is a bottom view showing a second embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 Holder main body 7 Rotating holder 31 Punch holder 41 Punch 55 Punch head holder 57 Punch head 59 Elevating member 61 Pressing plate 71 Circumferential groove 73 Pressing portion 83 Elastic member 85 Upper movement restricting member 87 Plate pressing plate

Claims (1)

(57) [Claims] 1. A punch holder (31) detachably mounted on a rotary holder (7) rotatably supported by a holder body (3) is provided.
A plurality of punches (41) supported to be able to move up and down in 1)
Are supported in a state of being lifted to a predetermined position by a lifter spring (49).
A pressing plate (61) provided with a pressing portion (73) in a part of a circumferential groove (71) engaged with the head (41H) of (1) is rotatable in the punch holder (31). A punch head (5) is provided on a punch head holder (55) which is provided to be vertically movable and is rotatable relative to the punch holder (31) and detachably supported by the punch holder (31).
An elevating member (59) having an upper end portion (7) is provided so as to be vertically movable, and the elevating member (59) and the pressing plate (6) are provided.
1) and a plurality of pressing pins (75) for pressing the head (41H) of each punch (41) downward in the punch head holder (5).
5) is provided so as to be movable up and down and is pressed and urged downward, so that each punch (4) is held against the punch holder (31).
In a multi-punch die apparatus provided with a detachable replacement of the punch holder (31) and the pressing plate (6).
1), an elastic member (83) for constantly urging the pressing plate (61) upward is provided, and the pressing plate (6) against the punch holder (31) is provided.
1) An upward movement restricting member (85) capable of restricting upward movement to a fixed height position is provided so as to be vertically movable relative to the punch holder (31) or the pressing plate (61). A multi-punch die apparatus characterized by the above-mentioned.