JP2003320418A - Die of punching machine, and punching die and die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a rising part to precisely bend by enabling a work to perform over-bending. <P>SOLUTION: In a punching die 11, a pressing die 49 for pressing a work W is rotatably provided in a cut out part 37K provided at the lower part of a punch body 37. The upper face of the pressing die is provided so as to contact to the lower face of the cut out part all the time. A side face on a bending side of the work in the pressing die is inclined downward. In a die 17, a die holder 61 equipped with a work supporting member 61A for supporting the work is provided at the upper face of a die body 59. A bending die equipped with a push-up part 73A for pushing up the work from the work supporting member is movably provided at the upper part of a hoisting and lowering member 65 provided in the die body so as to relatively freely move up and down. A contact part capable of contacting to the work supporting member is provided in the bending die 73. The contact of the contact part to the work supporting member moves the bending die and performs over-bending. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die for a punching machine, a punching die for molding, and a molding die for forming a rising portion by a punching die and a die for a punching machine.

[0002]

2. Description of the Related Art Heretofore, as a molding die for forming a work, there has been known one such as disclosed in Japanese Patent No. 255176. That is, the work is upwardly shaped by the cooperation of the punch ejector mounted on the tip of the punch body and the die chip mounted on the ejector plate.

[0003]

By the way, in the above-mentioned conventional molding die, since the upward rising portion is structurally not capable of overbending when the workpiece is subjected to upward molding processing, It was not possible to make an accurate sharp bend.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to form a punching machine which enables overbend bending of a work so that an upward rising portion can accurately bend. To provide a die for molding, a punch die for molding, and a die for molding.

[0005]

In order to achieve the above object, a molding die of a punching machine according to the present invention according to claim 1 is a work die in cooperation with a punch die for molding and a die for molding. In a molding die of a punching machine for forming a rising portion at an end, the molding punch die is
A pressing die for pressing the work is provided in the notch provided in the lower part of the punch body, and the upper surface of the pressing die is always in contact with the lower surface of the notch, and the side surface of the pressing die on the bending side of the work is provided. A die holder that is configured to incline downward to the right and has a die holder provided with a work supporting member that supports a work on the upper surface of the die body, and is vertically movable relative to the die body. On the upper part of the member, a bending die having a push-up portion capable of pushing up the work from the work supporting member is provided, and an abutting portion capable of abutting the work supporting member is provided on the bending die,
The bending die is moved by the contact of the contact portion with the work supporting member to perform overbend.

According to a second aspect of the present invention, there is provided a punching machine forming die according to the present invention. In the punching machine forming die according to the first aspect, the bending die is rotatably movable. It is a feature.

A molding die for a punching machine according to a third aspect of the present invention is the molding die for a punching machine according to the first or second aspect, wherein the pressing die is rotatably provided. It is what

According to a fourth aspect of the present invention, there is provided a punching die for forming a punching machine of a punching machine, which cooperates with a die for forming a die to form a rising portion at an end of a work. , A pressing die for pressing a work is provided in a notch portion provided in a lower portion of the punch body, and an upper surface of the pressing die is always provided in contact with a lower surface of the notch portion, and a side surface of the pressing die on a bending side of the work. Is inclined downward to the right.

According to a fifth aspect of the present invention, there is provided a punching die for a punching machine of the present invention, wherein the pressing die is rotatably provided. It is what

According to a sixth aspect of the present invention, there is provided a punching die die for a punching machine according to the present invention, which is a die die for a punching machine which cooperates with the punch punch die to form a rising portion at an end of a work. , A die holder provided with a work supporting member for supporting the work on the upper surface of the die body,
A bending die having a push-up portion capable of pushing up the work from the work supporting member is movably provided on the upper and lower parts of the elevating member provided on the die body so as to move the work supporting member to the bending die. Is provided so that the bending die is moved by the contact of the contact portion with the work supporting member to perform overbend.

According to a seventh aspect of the present invention, there is provided a punching machine die die of the present invention, wherein the bending die is rotatably movable. It is characterized by that.

Therefore, in the punching machine,
The work can be overbend bent, and the upward rising portion of the work is accurately bent at a predetermined bending angle.

Since the work is fixed by the work clamp, when the vicinity of the work clamp is bent, the work is sandwiched by the punch die and the work clamp, and the work cannot be dropped.

At this time, the pressing die of the punch die is rotatably provided, so that the punch die can be easily dropped.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 6 shows a turret punch press 1 as a punching machine. The turret punch press 1 is provided with a base 3 that is erected, side frames 5 and 7 are erected on both sides of the base 3, and an upper frame 9 is provided above the side frames 5 and 7. It is equipped.

On the lower surface of the upper frame 9, there is provided a disc-shaped upper turret 13 to which a plurality of upper punch dies (here, upper punch dies) 11 are detachably mounted. It is rotatably supported by the upper rotary shaft 15. The base 3 is opposed to the upper turret 13.
A disc-shaped lower turret 19 to which a plurality of lower die dies 17 paired with the punch die 11 are detachably mounted is rotatably supported by a lower rotary shaft 21 on the upper surface of the. There is. A ram 25 equipped with a striker 23 for hitting the punch die 11 is provided below the upper frame 9.

Therefore, the upper turret 13 and the lower turret 19 are rotationally controlled in synchronism with each other by a turret servomotor (not shown) mounted in the frame, and a desired pair of punch die 11 and die die 17 is striker 23. Positioning control is selectively performed at a processing position directly below the.

Further, a fixed table (not shown) is provided at the center of the upper surface of the base 3, and the left and right sides of the fixed table are sandwiched by the fixed table in the Y direction in the figure (left and right direction in FIG. 6).
A pair of movable tables 27, whose positioning is controlled along, are movably supported. The movable table 27 is integrally provided with a carriage base 29 extending in the X direction (the direction perpendicular to the paper surface in FIG. 6) which is the front-rear direction while straddling the fixed table. In addition, a carriage 31 that is movable in the front-rear direction is installed in the carriage base 29. The carriage 31 is equipped with a work clamp 33 that holds one end of a plate-shaped work W so as to be movable in the X direction.

Therefore, for positioning the work W between the upper turret 13 and the lower turret 19, the carriage 31 equipped with the work clamp 33 that holds one end of the work W is controlled to move on the carriage base 29 in the X direction. And the carriage base 29 is controlled to move in the Y direction.

The work W positioned in this way
The upper turret 13 and the lower turret 19 are rotationally positioned, and a predetermined punching die 11 and a die die 17 selected for forming work.

Next, the molding die 35 will be described with reference to FIGS. 1 and 2. The molding die 35 includes a punch die 11 as an upper die and a die die 17 as a lower die. The punch die 11 and the die die 17 are provided in the upper turret 13 and the lower turret 19, respectively. It is installed.

The punch die 11 is provided with a punch body 37 which is vertically movably mounted in a mounting hole 13H formed in the upper turret 13, and a bolt 39 is provided on the punch body 37. A lifter spring 43 that constantly urges the punch body 37 upward is interposed between the integrated flange 41 and the upper surface of the upper turret 13. A punch head 45 is attached to the upper portion of the flange 43 with a bolt 47.

A notch 37K is formed in the lower portion of the punch body 37. In this cutout portion 37K, a pressing die 49 is provided on the left side from the center in the left-right direction in FIGS. 1 and 2, and the pressing die 49 extends in the direction orthogonal to the paper surface in FIGS. 1 and 2. It is rotatably attached to the pin 51. 1 and 2 showing the side of the pressing die 49 where the work W is bent.
In the figure, the right side surface is provided with an inclined surface 49K inclined obliquely upward to the left.

In FIG. 1 and FIG. 2 of the punch body 37, a vertical groove 53 is formed in the vertical direction on the left side from the center in the horizontal direction. A spring 55 is provided between both sides of the vertical groove 53 in the upper and lower middle portions, which are orthogonal to each other in FIGS. 1 and 2, and both sides of the pressing die 49, and the pressing force of the spring 55 keeps the pressing die 49 constantly. The pin 51 is urged upward with the fulcrum as a fulcrum, and the upper surface of the pressing die 49 is in contact with the upper surface of the cutout portion 37K.

In the die mold 17, a hollow cylindrical member 57 is provided in a stepped hole 19H formed in the lower turret 19, and a die body 59 is provided in the hollow cylindrical member 57. The flange portion 59F integrated with the upper portion of the die main body 59 has the hollow cylindrical member 57.
Is mounted on the flange portion 57H integrated with the upper part of the. A die holder 61 is fixed by bolts 63 on the flange portion 59F of the die body 59. The upper part of the die holder 61 is the work supporting part 61A.
Are configured.

An elevating member 65 that can move vertically is provided in the die body 59.
The flange portion 65F integrated with the upper portion of the die is placed in the flange portion 59D integrated with the lower portion of the die body 59 while being constantly urged downward by the urging force of the spring 67. The bending die supporting member 69 is integrated on the flange portion 65F of the elevating member 65, and the space portion 71 formed in the upper portion of the bending die supporting member 69 has a structure shown in FIG.
Also with reference to the above, the push-up portion 7 capable of pushing up the tip end of the work W protruding from the work supporting member 61A.
A bending die 73 having, for example, a partially arcuate shape, which is provided with 3A, is movably provided, for example, rotatably provided, and an abutting portion 73B capable of abutting the work supporting member 61A is provided on the bending die 73. Has been. The abutting portion 73B is brought into contact with the work supporting member 61A so that the workpiece supporting member 61A is rotated to perform an overbend.

That is, a groove 75 is formed in the abutting portion 73B, and the protruding portion 69T formed on the upper portion of the bending die support member 69 is engaged with the groove 75. Moreover, the left part 73 of the bending die 73 in FIG.
L is constantly biased upward by the biasing force of the spring 77, and the lower surface of the groove 75 is in contact with the lower portion of the projecting portion 69T. Furthermore, a gap T is set between the upper surface of the contact portion 73B and the upper surface of the protruding portion 69T.
This gap T is the amount of overbend.

An arc portion 73R having an arc shape of the bending die 73
Corresponding to the above, the bending die support member 69 is provided with an arc-shaped guide portion 69R which serves as a guide when the bending die 73 rotates.

In FIGS. 1 and 2, a lifting device 79 for lifting the lifting member 65 is provided on the left side below the lifting member 65. That is, a guide rail 81 is laid on the base 3, and an elevating cylinder 83 that is guided by the guide rail 81 and is movable in the left and right directions in FIGS. 1 and 2 is provided. An elevating table 87 is attached to the tip of the piston rod 85 attached to the cylinder 83. A moving cylinder 89 for moving the lifting cylinder 83 in the left-right direction is provided on the base 3, and a tip of a piston rod 91 attached to the moving cylinder 89 is attached to the lifting cylinder 83. Has been.

With the above configuration, for example, as shown in FIG.
Such as a U-shaped hole H₁, H_Two, H
_ThreeStanding part W in the open space_AThe molding part of
The operation when performing the operation will be described with reference to, for example, FIG. 1 and FIG.
As shown in FIG.
Hole H₁And H_ThreeBetween and to the rising part W_AAnd hole H _Two
Position the workpiece W so that
It That is, the bending line L of the work W₁Position is the work support
It is positioned at the tip of the holding member 61A. And in FIG.
As shown, use striker 23 to punch 11
When the punch head 45 is hit, the punch body 37 is lifted.
It descends against the urging force of the pulling 43,
Clamp work W with work support member 61A
It

Then, the moving cylinder 89 is operated to extend the piston rod 91 and position the lifting cylinder 83 to a position below the lifting member 65. Then, the lifting cylinder 83 is operated to extend the piston rod 85, and the lifting platform 87 is moved upward. As a result, since the elevating member 65 moves upward against the biasing force of the spring 67, the bending die support member 69 rises and the contact portion 73B of the bending die 73 contacts the lower surface of the work support member 61A. Contact. Further, when the bending support member 69 rises, the arc-shaped arc portion 73R of the bending die 73 resists the biasing force of the spring 77, and the guide portion 69 of the bending die support member 69.
While being guided by the R by rotating, is molded with raised along the rising portion W _A of the workpiece W to the bend line L ₁ of the workpiece W. At this time, the push-up portion 73A of the distal end portion of the bending die 73, a direction orthogonal to the bending line, that is, from being projected to the vertical direction in FIG. 2, the rising portion W _A is considering springback example 90
It can be bent to a tighter overbend, and after being molded, it can be bent accurately to 90 degrees, for example.

In this way, the upward forming process can be easily performed on the work W alternately, and a highly accurate upward forming product can be obtained. 1 and 2, the front upper part of the pressing mold 49, if Seshimere form a clearance portion of the example curved shape to allow bending upwardly acute angle bend example hemming the workpiece W, the rising portion W _A against the workpiece W Can form an acute bend. The angle of this acute bend can be determined by appropriately setting the amount of overbend, which is the gap T.

FIG. 5 shows another embodiment, which is an alternative to FIG. 5, parts that are the same as the parts shown in FIG. 2 are given the same reference numerals, and overlapping descriptions will be omitted. In FIG. 5, the bending die 73 has the same shape and shape as that shown in FIG. 5, that is, it has an angular shape and does not have a circular arc portion, and has a similar action and effect by moving vertically. is there.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0036]

As can be understood from the above description of the embodiments of the present invention, according to the inventions of claims 1, 2 and 3, the punching machine is capable of overbending bending and is directed upward. The rising part can be bent accurately.

Since the work is fixed by the work clamp, when the vicinity of the work clamp is bent, the work is sandwiched by the punch die and the work clamp, and the work cannot be dropped.

At that time, since the pressing die of the punch die is rotatably provided, the punch die can be easily dropped.

Since the vicinity of the tip of the upward punch is projected in a direction orthogonal to the bending line, the rising portion is bent tightly from a predetermined bending angle in consideration of spring back, and after the forming process is performed. Bending angle can be accurately bent.

[Brief description of drawings]

FIG. 1 is an enlarged front view of a molding die of the present invention, which is a state diagram before forming a work.

FIG. 2 is an enlarged front view of the molding die of the present invention, which is a state diagram after the work is molded.

FIG. 3 is an enlarged view of an arrow III portion in FIG.

FIG. 4 is a plan view of a work for forming a rising portion.

FIG. 5 is an enlarged front view of a molding die according to another embodiment, which is an alternative to FIG. 2, and is a state diagram after molding work is performed.

FIG. 6 is a front view of a turret punch press as a punching machine for forming a work.

[Explanation of symbols]

1 Turret punch press (punching machine) 11 punch dies 17 die mold 23 striker 35 Mold for molding 37 punch body 37K notch 45 punch head 49 holding type 49K slope 51 pin 53 vertical groove 55 spring 57 Hollow cylindrical member 59 die body 61 Die holder 61A Work support member 65 Lifting member 67 spring 69 Bending support member 71 Space Department 73 Bending type 73A Push-up part 73B contact part 73L left part 73R arc part 75 groove 77 spring 79 Lifting device 83 Lifting cylinder 87 Lift 89 Moving cylinder

Claims (7)

[Claims] 1. A molding die of a punching machine for forming a rising portion at an end portion of a work by cooperation between a molding punch die and a molding die die, wherein the molding punch die is a punch. A pressing die for pressing the work is provided in the notch provided in the lower part of the body, and the upper surface of the pressing die is always in contact with the lower surface of the notch, and the side of the pressing die on the bending side of the work is right. An elevating member that is configured to be inclined downward, in which the molding die mold is provided with a die holder having a work supporting member that supports a work on the upper surface of the die body, and is vertically movable relative to the die body. A bending die having a push-up portion capable of pushing up the work from the work supporting member is movably provided on the upper part of the work supporting member, and a contact portion capable of contacting the work supporting member is provided on the bending die. A molding die for a punching machine, wherein the bending die is moved by the contact of the contact portion with the work supporting member to perform overbending. 2. The molding die for a punching machine according to claim 1, wherein the bending die is provided so as to be rotatable and movable. 3. The molding die for a punching machine according to claim 1, wherein the pressing die is rotatably provided. 4. A forming punch die of a punching machine, which cooperates with a forming die die to form a rising portion at an end portion of a workpiece. The forming die is provided with a notch portion provided at a lower portion of a punch body. A pressing die for pressing is provided, an upper surface of the pressing die is always provided in contact with a lower surface of the cutout portion, and a side surface of the pressing die on the bending side of the work is inclined downward to the right. Punch die for forming punching machine. 5. The molding punch die according to claim 4, wherein the pressing die is rotatably provided. 6. A molding die die of a punching machine, which cooperates with a forming punch die to form a rising portion at an end portion of a work, comprising a work supporting member for supporting the work on an upper surface of a die body. A die holder is provided, and the upper and lower members are provided on the die body so as to be vertically movable relative to each other.
A bending die having a push-up portion capable of projecting a work from the work supporting member is movably provided, and an abutting portion capable of abutting the work supporting member is provided on the bending die, and the abutting portion with respect to the work supporting member. A die die for a punching machine, characterized in that the bending die is moved so as to perform overbend by abutting of the parts. 7. The molding die die according to claim 6, wherein the bending die is provided so as to be rotatable and movable.