JPH08155561A - Multi-punching die device - Google Patents

Abstract

PURPOSE: To provide a multi-punching die device in which mounting of a punch head, etc., to a punch holder is surely executed and mounting/demounting to change of a punch to a punch holder is easily executed. CONSTITUTION: A punch holder 31, which is mounted free to mount/demount to a rotary holder 7 supported rotatable/drivable, is arranged to a holder main body 3. A punching/pressing plate 61, in which a punching/pressing part 73 is arranged to part of a peripheral groove 71 engaging a head part 41H of plural punches 41 supported free to elevate with the punch holder 31, is arranged as integrally connected to a punch head 57 supported free to rotate and elevate to the punch holder 31. A vertical motion control member 85 free to control the movement in the upper direction of punching/pressing plate 61 for the punch holder 31 is arranged to the side of punch holder 31 or punching/pressing plate 81 and relatively free to elevate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a multi-punch die apparatus having a plurality of punches having different shapes and sizes, and more specifically, it is possible to securely attach a punch head or the like to a punch holder, and The present invention relates to a multi-punch mold device capable of easily attaching and detaching a punch to and from a punch holder.

[0002]

2. Description of the Related Art As a prior art example of the present invention, Japanese Patent Laid-Open No. 6-
There is No. 31356. In this prior art example, a pressing plate having a pressing portion in a part of a circumferential groove engaged with the heads of a plurality of punches supported by a punch holder so as to move up and down is relatively opposed to the punch holder. Although it is integrally connected to a punch head that is vertically rotatable and vertically movable, the punch head holder that supports the punch head so as to be vertically movable is relatively rotatably fitted to the punch holder. In order to prevent the punch head holder from coming out of the punch holder, an O-ring is provided 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. It has a configuration in which, etc. are interposed.

[0003]

With the above construction, since the coupling force between the punch holder and the punch head holder is due to the O-ring, there is a problem that the punch head holder easily comes out of the punch holder.

When the heads of a plurality of punches are engaged with the peripheral grooves formed on the lower surface of the pressure plate during disassembly and assembly, the punch heads are inserted into the holes formed at the upper portions of the peripheral grooves. There is a problem that it may get in and prevent the pressing plate from rotating with respect to the punch holder, and the assembly work is rather troublesome.

Further, when performing nibbling with a thin punch, there is a problem that the guide function of the punch is insufficient and galling may occur.

[0006]

In view of the conventional problems described above, the present invention provides a punch holder detachably attached to a rotary holder rotatably supported by a holder body. A punching plate having a punching portion is provided in a part of a circumferential groove engaged with the heads of a plurality of punches supported by the punch holder so as to be rotatable relative to the punch holder. The punch holder, which is provided so as to be integrally movable with the punch head that is movable up and down and regulates the upward movement of the pressure plate with respect to the punch holder, is the punch holder. Alternatively, it is provided on the pressure plate side so as to be vertically movable relative to each other.

Further, an elastic member is provided between the punch holder and the pressure plate to keep the pressure plate at a constant height position with respect to the punch holder during disassembly and assembly.

Further, a plate pressing plate for guiding the lower end portion of each punch to be vertically movable is detachably attached to the lower side of the punch holder, and the plate pressing plate is composed of one plate. is there.

[0009]

In the above structure, when the punch holder is rotated relative to the pressure plate, the heads of the plurality of punches supported by the punch holder are engaged with the circumferential grooves provided in the pressure plate to be relatively engaged. Move. Therefore, it is possible to press the indexed punch with the pressing section by lowering the punch head after indexing and positioning the head of the appropriate punch so as to correspond to the pressing section of the circumferential groove. ,
The work can be punched in cooperation with a die corresponding to the punch.

When the pressing plate moves up and down with respect to the punch holder, the upward movement restricting member also moves up and down integrally to restrict the upward movement of the pressing plate. It is possible to prevent the pressure plate from coming off.

Further, since the pressure plate is always supported at a constant height position with respect to the punch holder by the action of the elastic member, the heads of the plurality of punches are provided on the lower surface of the pressure plate. It can be located in the circumferential groove, the pressure plate can be easily rotated with respect to the punch holder, and the assembling work can be easily performed.

Further, since the lower end portion of each punch is vertically movably guided by one plate pressing plate, the bending is restricted even when the component force in the lateral direction is applied during nibbling. It is possible to prevent the galling phenomenon during the nibbling process.

[0013]

EXAMPLE Referring to FIG. 1, a multi-punch mold apparatus 1
Is used by being attached to the holder body 3 in a punch press (not shown) such as a turret punch press. The holder 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 through a plurality of bolts, and a cylindrical rotary holder 7 is rotatably fitted and supported on the outer cylinder 5. There is.

A flange 7F slidably contacting the upper surface of the outer cylinder 5 is provided on the upper part of the rotary holder 7, and a plurality of ring members 9 for holding the outer cylinder 5 between the flange 7F and the flange 7F are provided on the lower part. It is attached integrally via the bolts.

Therefore, the rotation holder 7 is rotatably supported with respect to the outer cylinder 5 in a state in which the movement in the vertical direction is restricted. In order to rotate the rotary holder 7, a ring-shaped worm wheel 11 is integrally attached to the upper surface of the rotary holder 7 by a plurality of bolts, and the worm wheel 11 is rotatably attached to the holder body 3. A supported worm gear (not shown) is meshed. The worm gear is rotationally driven by a servo motor (not shown), and the worm wheel 11 can be indexed and positioned at an arbitrary rotation angle from the origin position by appropriately rotating the servo motor by feedback control. It is a thing.

In order to easily position the worm wheel 11 at the origin position, the worm wheel 11 is provided with an origin dog 13, and the holder main body 3 is provided with an origin signal when the dog 13 is detected. A sensor 15 such as a limit switch for outputting the output to the control device is provided.

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

On the inner peripheral surface of the rotary holder 7, so that the positional relationship between the rotary punch 7 and the multi-punch mold device 1 which is attached to and detached from the rotary holder 7 is always kept constant. The positioning key 17 is integrally attached by a bolt.

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 mold apparatus 1 to be vertically movable with respect to the rotary holder 7.

More specifically, the lifter ring 19 has a short tubular shape, and tubular spring seats 23 are integrally formed at a plurality of positions on the ring member 21 integrally attached to the outer side of the upper end through a plurality of bolts. Installed in place. Then, a plurality of lifter springs 25 mounted between the spring seat 23 and the holder body 3 are urged upward.

The spring seat 23 is restricted from moving upward by a restricting bolt 27 which penetrates 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 has the multi-punch mold device. An inner flange 19F for supporting 1 is formed so as to project inward.

A fixed key 29 protruding inward is provided at an appropriate height of the lifter ring 19.

The multi-punch mold device 1 includes a punch holder 3 detachably attached to the rotary holder 7.
1 is provided. The punch holder 31 has a substantially cylindrical shape, and a key groove 33 is formed vertically on the outer peripheral surface that fits into the rotary holder 7 so that the positioning key 17 can be engaged and disengaged. The lifter ring 19
A flange portion 31F supported by the inner flange 19F is provided.

A thick punch mounting portion 35 is provided vertically inside 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 form a concentric circle. A plurality of punch mounting holes 39 that penetrate vertically are provided at equal intervals.

A small-diameter punch 41 is mounted in each of the punch mounting holes 39 so as to be vertically movable.
The rotation of the No. 1 with respect to the punch holder 31 is restricted by engaging the key 43 attached to each punch 41 with the key groove 39K of the punch mounting hole 39.

Each punch 4 is attached to the punch holder 31.
In order to support 1 at a predetermined position, a ring-shaped spring seat plate 45 is attached to the lower surface of the punch holder 31 via a plurality of bolts, and supports the plate 45 and the stepped portion 41S of each punch 41. Between the ring member 47 and the ring member 47, a lifter spring 49 for supporting each punch 41 in a raised state is mounted.

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

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

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

The pressure 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 shaft center of the elevating member 59. Lifting and lowering member 5
Relative rotation with respect to the elevating member 59 is surely regulated via a pin 69 attached to 9.

On the lower surface of the pressure plate 61, a T-shaped circumferential groove 71 into which the heads 41H of the punches 41 are engaged.
And a through hole 71H is formed in the vertical direction at a position where the peripheral groove 71 corresponds to each punch 41.
The pressure portion 73 is formed in a state where the through hole 71H is left in only one place.

The heads 41 of the punches 41 are provided at a plurality of locations on the punch head holder 55 corresponding to the through holes 71H.
A pressing pin 75 that presses H downward is provided so as to be vertically movable. Each of the above-mentioned pressing pins 75 is a spring 79 mounted elastically between the blind screw 77 and the head of each pressing pin 75.
Is simply urged downward by.

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

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

Each die (not shown) corresponding to each punch 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 the configuration of rotating the die holder in the same direction in synchronization with the rotary holder 7 is already known. A detailed description of the die supporting structure is omitted.

In the above structure, when the servo motor is driven to rotate the worm wheel 11, 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 rotate via the fixed key 29 and the lifter ring 19, the head 41H of each punch 41 swivels in the circumferential groove 71 of the pressure plate 61 by the rotation of the punch holder 31. Moving.

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

The die holder supporting each die corresponding to each punch 41 is also indexed and positioned in the same direction in synchronism, and each die forming a pair with each punch 41 always maintains a corresponding relationship. It is to 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 in the punch press. When it is lowered against the lifter spring 25 and the stripper spring 65, the pressure plate 61 is integrally lowered via the elevating member 59, and the predetermined punch 41 is pressed by the pressure unit 73.
Is lowered against the lifter spring 49.

At this time, the other punches 41 have a mode in which the pressing pin 75 is relatively pushed up against the spring 79, and the work (not shown) is not punched.

After punching the work with the predetermined punch 41 and then raising the striker, the punch 4 is moved by the action of the stripper spring 65.
1 is pulled out from 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-mentioned configuration, each punch 41
In order to perform attachment / detachment and replacement, the punch head 57 is appropriately held and lifted so that the entire multi-punch mold device 1 can be pulled out 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 pressing plate 61 is prevented from coming out of the punch holder 31. It is easy to handle since 61 and the like never fall out of the punch holder 31.
After taking out the multi-punch mold device 1 from the rotary holder 7 or the like, loosening the bolt 67 allows the punch head holder 55, the elevating member 59, and the like to be removed upward while leaving the pressure plate 61. Therefore, the pressure plate 6
The punch 41 can be attached / detached and replaced through the through hole 71H communicating with the circumferential groove 71 formed on the lower surface of the punch 1.

When the punch 41 located below the pressure-applying portion 73 of the pressure-applying plate 61 is attached / detached and replaced, the pressure-applying 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 section 73. At this time, the head 41H of each punch 41 is entirely in the circumferential groove 7.
Must be located within 1.

In this embodiment, the pressure plate 61 is urged upward by the action of the elastic member 83,
Also, the upper movement restricting member 8 screwed to the lower portion of the pressure plate 61
Since the head of the lower end of the punch 5 abuts the spring seat 81 and always holds it at a constant height position, the head 41 of each punch 41 is
Since H is located in the circumferential groove 71H of the pressure plate 61 and does not enter the through hole 71H, it is easy to rotate the pressure plate 61 relative to the punch holder 31. Can be done.

That is, according to the present embodiment, the pressing plate 61 is prevented from inclining by being supported by being pressed and urged upward by the elastic member 83, so that it does not tilt with respect to the punch holder 31. The punch 41 can be easily attached / detached and replaced by rotating the pressure plate 61.

After the required punch 41 is attached / detached and replaced,
By refitting the punch head holder 55 to the punch holder 31 and then tightening the bolts 67, the pressure plate 61 can be integrally attached to the elevating member 59 again.

At this time, by engaging an appropriate tool with the upward movement regulating member 85 and holding it in a fixed state, the bolt 6
The tightening of 7 can be performed reliably and easily.

FIG. 2 shows an embodiment in which a disc-shaped plate pressing plate 87 is attached to 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.

A guide hole 9 is provided in the plate pressing plate 87 for guiding the lower end portion of each punch 41 having a small diameter so as to be vertically movable.
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 tight contact state so as to regulate the bending even when the lower ends of the punches 41 receive a component force in the lateral direction. I am doing it.

Therefore, when nibbling is performed by the punch 41, a lateral component force acts on the small diameter portion of the lower end portion of the punch 41, but the lower end portion is guided by the guide hole 91 of the pressing plate 87 in a closely contacting state. In addition, since the pressing plate 87 has high rigidity, the bending due to the lateral component force is suppressed, and the galling phenomenon with the die can be prevented.

The present invention is not limited to the above embodiment, but can be implemented in other modes by making appropriate changes. That is, for example, the upward movement regulating member 8
5 is screwed to the spring seat 81 and turned upside down, the upper head is vertically movable relative to the pressure plate 61, and the upper limit of the pressure plate 61 is restricted by the upper head. It is also possible to do so.

[0056]

As can be understood from the above description of the embodiments, in short, the present invention provides a punch holder detachably attached to a rotary holder rotatably supported by a holder main body, This punch holder is provided with a pressure plate having a pressure portion in a part of a circumferential groove that engages the heads of a plurality of punches that are vertically movable, and is rotatable relative to the punch holder. And a punch head provided so as to be movable up and down and the pressure plate are integrally connected to each other, and an upper movement restricting member for restricting upward movement of the pressure plate with respect to the punch holder is used as the punch. Since it is provided on the holder or the pressure plate side so as to be movable up and down relatively, it is possible to prevent the pressure plate from coming out of the punch holder, as described above.

Since the punch holder and the pressure plate are provided with an elastic member for always holding the pressure plate at a constant height position with respect to the punch holder during disassembly and assembly, As described above, the pressure plate can be supported without tilting, and the punch plate can be easily attached / detached and replaced by rotating the pressure plate with respect to the punch holder. The work is also easy.

Further, a plate pressing plate for guiding the lower end of each punch to be vertically movable is detachably attached to the lower side of the punch holder, and the plate pressing plate is composed of one plate. Therefore, at the time of nibbling, the lower end of the punch having a small diameter can be restrained from being bent by the component force in the lateral direction, and the galling phenomenon can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a mold device according to this embodiment.

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

[Explanation of symbols]

 3 Holder body 7 Rotation 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 Upward movement regulating member 87 Plate pressing plate

Claims (3)

[Claims] 1. A punch holder detachably attached to a rotary holder rotatably supported by a holder main body, the heads of a plurality of punches movably supported on the punch holder. A pressure plate having a pressure portion is provided in a part of the combined circumferential groove, and the punch head and the pressure plate integrally provided so as to be rotatable and vertically movable relative to the punch holder are integrally formed. An upper movement restricting member that is connected to the punch holder and is capable of restricting upward movement of the pressing plate with respect to the punch holder is provided on the punch holder or the pressing plate side so as to be vertically movable relative to each other. Characteristic multi-punch mold device. 2. Between the punch holder and the pressure plate,
2. The multi-punch mold device according to claim 1, further comprising an elastic member for holding the pressure plate at a constant height position with respect to the punch holder during disassembly and assembly. 3. A plate pressing plate for guiding the lower end of each punch to be movable up and down is detachably attached to the lower side of the punch holder, and the plate pressing plate is composed of one plate. The multi-punch mold device according to claim 1 or 2, which is characterized.