JPH11333531A - Punch head device, and punching die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching die capable of easily re-grinding a punch body and regulating the height after re-ground, and to provide a punch head device to be used for the punching die. SOLUTION: In a punch head device, a retainer collar 5 is provided in a vertically movable manner on a lower part of a sleeve 3 on an upper end part of which a punch head member 1 is mounted in a condition that the downward detachment is prevented, an elastic member 7 is interposed between the punch head member 1 and the retainer collar 5 in a unitized manner, a punch body 11 provided with a blade part 11A on its lower end part is screwed to a screw part 3B provided on an inner circumferential surface of the sleeve 3 in a vertically regulating manner, a cylindrical punch guide 13 to vertically guide the punch body 11 so as to be vertically movable is connected to the retainer collar 5 in an attachable/detachable manner, and the punch body 11 in the punch guide 13 is provided in an upwardly detachable manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch die and a punch head device for use in a punch press such as a turret punch press, and more particularly, to a punch body having a blade at its lower end. The present invention relates to a punch head device and a punch die which can be easily attached to and detached from a punch head device without using a tool or the like.

[0002]

2. Description of the Related Art As a conventional punch die, a punch head (punch driver) is integrally provided at an upper portion, and a punch is bolted to a guide holder which is vertically movable supported by a punch holder such as a turret in a turret punch press. There is a configuration in which urethane rubber of a stripper spring is fixed and attached to a guide holder so as to surround the blade portion of the punch. The punch is fixed to the lower part of the punch head supported vertically by the guide holder by a bolt, the stripper spring is provided inside the guide holder, and the stripper plate is fixed to the lower surface of the guide holder by the bolt. There is.

[0003]

In the conventional configuration as described above, a jig and a tool are required for attaching and detaching the punch at the time of re-grinding the punch, and the attachment and detachment are troublesome and the adjustment of the punch height is troublesome. There is a problem that is.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and the invention according to claim 1 has a structure in which a lower portion of a sleeve having a punch head member attached to an upper end portion is provided. A retainer collar is provided so as to be movable up and down in a state where it is prevented from falling down, and an elastic member is interposed and provided as a unit between the punch head member and the retainer collar. This is a configuration including a screw portion for screwing a punch body having a blade portion on the portion so as to be vertically adjustable.

According to a second aspect of the present invention, a retainer collar is provided in a lower part of a sleeve having a punch head member attached to an upper end thereof so as to be able to move up and down in a state in which the retainer collar is prevented from falling down. An elastic member is interposed between the member and the retainer collar to form a unit,
A punch body provided with a cylindrical punch guide for guiding a punch body having a blade portion at a lower end portion in a vertically movable manner and the retainer collar is detachably connected, and provided in the punch guide so as to be vertically movable. The punch body is provided so as to be able to be removed upward from the punch guide, and a punch body is screwed to the sleeve so as to be vertically adjustable.

According to a third aspect of the present invention, in the second aspect of the present invention, the punch guide is detachably mounted on the guide holder, and the height of the punch head member with respect to the guide holder is constant. In this configuration, a protruding height regulating member for regulating the height is provided detachably on the guide holder.

According to a fourth aspect of the present invention, a retainer collar is provided at a lower portion of a sleeve having a punch head member attached to an upper end thereof so as to be able to move up and down in a state in which the collar is prevented from falling down. An elastic member is interposed between the member and the retainer collar to form a unit,
A punch body having a blade portion at a lower end portion is provided by being screwed to the sleeve so as to be vertically adjustable, and the retainer collar is provided at a seat portion of a concave portion formed at an upper portion of a guide holder for directly guiding the punch body so as to be vertically movable. And provide
A projection height regulating member for regulating the projection height of the punch head member with respect to the guide holder to a fixed height is provided above the recess.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a small-diameter projection is provided at the center of the lower surface of the guide holder, and the height of the projection is adjusted by a work clamp or a punch press in a punch press. This is a configuration in which a portion protrudingly formed on the upper surface of the work is provided at a height that allows it to enter the lower part of the guide holder.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a punch head device includes a sleeve 3 having a punch head member 1 mounted on an upper end portion. A retainer collar 5 is provided at the lower portion of the sleeve 3 so as to be able to move up and down in a state in which the sleeve 3 is prevented from falling out. A strong (elastic coefficient of elasticity) is provided between the retainer collar 5 and the punch head member 1. An elastic member 7 as a (large) stripper spring is interposed and the whole is unitized.

More specifically, the punch head member 1
The upper part of the T-shaped protrusion 1T which can be engaged with and disengaged from the T-slot 9T is formed so as to correspond to the T-slot 9T formed in the lower part of the striker 9 which can move up and down in a punch press (not shown). It is a configuration prepared for. A flange 1F as a stopper projecting outward is provided at a lower portion of the punch head member 1, and a vertical key groove 1K is formed at a position facing the outer peripheral surface, and a screw hole is formed at the lower surface. 1S is formed.

An upper end of the cylindrical sleeve 3 is screwed into the screw hole 1S of the punch head member 1 so as to be vertically adjustable. At the lower end of the sleeve 3, there is formed a step 3A for preventing the annular retainer collar 5 from slipping out in the downward direction. A screw portion 3B for screwing the upper end portion of the punch body 11 provided with 11A so as to be able to adjust the vertical position is formed.

The retainer collar 5 is in a state where the retainer collar 5 is in contact with the step 3A of the sleeve 3 to prevent the retainer collar 5 from slipping downward, and the sleeve 3 is located between the retainer collar 5 and the punch head member 1. And the elastic member 7 is interposed therebetween.

Although the elastic member 7 is exemplified by a coil spring in FIG. 1, it may be constituted by a disc spring or a cylindrical urethane rubber. Further, in some cases, a gas spring or an air cushion may be used. It is also possible to adopt a configuration utilizing fluid pressure.

As described above, the punch die using the punch head device in which the punch head member 1, the sleeve 3, the retainer collar 5, and the elastic member 7 are unitized as one assembly is used for the screw portion 3B of the sleeve 3. The punch body 11 has an upper end screwed up and down so as to be vertically adjustable, and a cylindrical punch guide 13 for guiding the punch body 11 so as to be vertically movable.

At the upper part of the punch guide 13, there is formed a fitting recess 13A into which the retainer collar 5 can be fitted, and the inner peripheral surface of the fitting recess 13A and the retainer collar 5 are formed.
A locking member 15 such as an O-ring is provided between the outer peripheral surface of the punch guide 13 and the punch guide 13 so that the retainer collar 5 can be relatively easily attached to and detached from the punch guide 13. The locking member 1
5 is not limited to a locking ring such as an O-ring, but may be a ball plunger or the like.

The punch guide 13 is formed with a key groove 13K for engaging with a key 17 mounted on the punch body 11 in an appropriate range from the upper surface, and a lower end 13E is provided with a blade 11A of the punch body 11 up and down. There is a guide hole for guiding the vehicle.

For example, a tubular guide holder 21 is provided for mounting the punch die on a punch holder 19 that supports the punch die in a vertically movable manner like an upper turret in a turret punch press.

The guide holder 21 is a punch holder 19
A guide key 23 is provided on the outer peripheral surface to be engaged with a key groove formed in the mounting hole. The punch guide 13 is mounted inside the guide holder 21 so as to be vertically movable and detachable, and the guide holder 21 has a key guide portion 21K for guiding the key 17 protruding from the punch guide 13 only up and down. Is formed.

The guide holder 21 and the punch guide 13
A lifter spring 25 that lifts and supports the punch guide 13 to a predetermined height is interposed between them, and the lower end of the punch guide 13 appropriately protrudes from the lower surface of the guide holder 21.

The projecting dimension of the lower end portion 13E of the punch guide 13 from the lower surface of the guide holder 21 is such that when the upper surface of the workpiece W has, for example, a burring formed thereon, the projecting portion is guided during processing. Holder 21
It is a height dimension that can enter the lower side without being crushed.

On the upper part of the guide holder 21,
A protruding height restricting member for restricting the protruding height of the punch head member 1 with respect to the guide holder 21 to a certain height is provided. More specifically, a ring-shaped stopper member 27 that contacts the flange 1F of the punch head member 1 and restricts upward movement is provided above the guide holder 21.
Is detachably attached.

The stopper member 27 has an inner protrusion 27A protruding inward to engage with the key groove 1K of the punch head member 1 on the inner peripheral surface. An engaging recess 27B to be engaged is formed. In order to detachably attach the stopper member 27 to the guide holder 21, a locking ring 29 is provided on the upper portion of the guide holder 21 so as to abut on the upper surface of the stopper member 27.

The locking ring 29 is formed such that a part thereof is cut away so that the diameter thereof can be reduced, and gripping portions 29A are provided at both ends due to the cutout, so that both gripping portions 29A can be brought closer to each other. Thus, the diameter of the locking ring 29 can be reduced, and the locking ring 29 can be attached to and detached from an inner peripheral groove formed on the upper inner surface of the guide holder 21.

In the above configuration, when the punch head member 1 is pressed and pushed down by the striker 9 in the punch press, the punch guide 1 is pushed through the elastic member 7.
3 is lowered against the lifter spring 25, and the guide holder 21 is lowered against the support spring (not shown), so that the lower end surface of the punch guide 13 contacts the upper surface of the plate-like work W, and the work W Is pressed and fixed on the upper surface of the die D, the elastic member 7 is then compressed, and the punch body 11
Is lowered and the work W is punched in cooperation with the die D.

Thereafter, when the striker 9 is lifted and returned,
Each part that has fallen is also to be raised and returned. On this occasion,
The guide holder 21 is raised and returned to a predetermined position by the action of the support spring, and the punch head member 1 is regulated so as to protrude from the guide holder 21 by a predetermined height.

Accordingly, the punch holder 19 is an upper turret in a turret punch press, and the movement of the punch holder 19 causes the T-shaped projection 1T of the punch head member 1 to be disengaged from the T groove 9T of the striker 9. It can be done smoothly.

In the above-described configuration, when the blade portion 11A of the punch body 11 is worn out for a long period of time and needs to be re-ground, or when the punch guide 13 needs to be replaced, the locking ring 29 is required. The gripping portions 29A at both ends are brought close to each other to reduce the diameter, the locking ring 29 is removed from the guide holder 21, and then the punch head member 1 is lifted up.
1, the punch guide 13, the punch body 11 and the like can be pulled out upward.

Thereafter, the retainer collar 5 and the punch body 11 can be pulled out from the punch guide 13 by pulling out relatively strongly to release the engagement between the punch guide 13 and the retainer collar 5. Therefore, in this state or after removing the punch body 11 from the sleeve 3, the blade 11A is polished, and the punch body 11 is screwed and fixed to the sleeve 3 again.

As described above, when the height adjustment is required by polishing the blade portion 11A of the punch body 11, it can be easily adjusted by adjusting the screwing of the punch body 11 to the sleeve 3.

As can be understood, according to this embodiment, the punch guide 13 and the punch body 11 can be easily attached to and detached from the guide holder 21 and the sleeve 3 of the unitized punch head device without using a tool. Since the punch body 11 and the punch guide 13 having different outer shapes of the blade portion 11A can be shared,
It can be used by detaching and replacing it. In other words, the punch head device such as the sleeve 3 and the guide holder 21 can be shared for punch dies having various punching shapes, and the manufacture of the punch dies becomes easier.

When it is necessary to regrind the blade portion 11A of the punch body 11 in the punch die, it is easy to re-grind the punch body 11 by attaching and detaching the punch body 11, and to easily adjust the height after the re-grinding. Can be done. Further, when the attachment / detachment of the punch guide 13 is required, the attachment / detachment can be easily performed without using a tool.

Further, the punch body 11 (however, the punch chip having a blade 11A with respect to the punch body 11 is detachably replaceable) and the punch guide 13 are treated as consumables. It is also possible.

FIG. 2 shows a second example. The difference from the first example shown in FIG. 1 is that the structure is further simplified by omitting the lifter spring 25, and the other structures are the same as those described above. Since the configuration is the same as that of the example, portions having the same function are denoted by the same reference numerals, and redundant description is omitted.

FIG. 3 shows a third example. This third
In the example, similarly to the first example, a retainer collar 105 is provided below the sleeve 103 having the punch head member 101 attached to the upper end thereof so as to be able to move up and down in a state where the sleeve 103 is prevented from falling down. An elastic member 107 is interposed between the retainer collar 105 and the punch head member 111 to form a unit. Then, the blade portion 111 is provided at the lower end.
The upper end of the punch body 111 provided with A is screwed into the sleeve 103 so as to be vertically adjustable from below. In addition,
The punch body 111 is formed thinner than the punch body 11 shown in the first example.

In the third example, the punch body is omitted by the guide holder 121 without the punch guide.
In this configuration, the retainer collar 105 is seated on an annular seat of a concave portion 121A formed at an upper portion of the guide holder 121. The flange 101F of the punch head member 101 is directly locked by a locking ring 129 which is detachably attached to the upper inner peripheral surface of the concave portion 121A and serves as a protruding height regulating member.

A small-diameter projection 121P is formed at the center of the lower surface of the guide holder 121.
Inside the 1P, a stripper plate 131 for guiding the blade 111A is detachably attached by a locking ring 133 similar to the locking ring 129. The above protrusion 1
The projecting height of 21P is such that when performing punching of a plate-shaped work held by a work clamp in a punch press, a work portion of a small protrusion such as a burring formed on the upper surface of the work clamp or the work is formed. It is provided at a height that allows it to enter the lower part of the guide holder 121.

In the third embodiment, the punch guide 13, the lifter spring 25, the stopper member 27 and the like in the first embodiment are omitted to simplify the present embodiment, and the third embodiment is similar to the first embodiment. It is effective. In the third example, the work clamp holding the work enters the lower side of the guide holder 121 and the blade 1
11A, it is possible to reduce the unprocessed area (dead zone) in the work. Further, the processed portion formed on the upper surface of the workpiece can enter the lower side of the guide holder 121, so that even when the processed portion is formed on the upper surface, it is possible to perform processing at a close position without crushing. it can.

[0038]

As will be understood from the above description, the invention according to the first aspect is a state in which the lower end of the sleeve having the punch head member attached to the upper end thereof is prevented from falling out. Along with providing the retainer collar so as to be vertically movable, an elastic member is interposed between the punch head member and the retainer collar and provided as a unit,
Since the inner peripheral surface of the sleeve is provided with a screw portion for screwing a punch body having a blade portion at a lower end portion in a vertically adjustable manner, the elastic member is provided between the punch head member and the retainer collar. When the punch body is attached to and detached from the sleeve, the punch body can be easily attached and detached without being affected by the biasing force of the elastic member and without using a tool.

Therefore, the blade portion of the punch body can be easily re-ground and the height adjusted after the re-polishing can be easily performed.

Further, since the unit is formed as a unit, the attachment and detachment of the punch body can be easily performed, and the punch bodies having different blade portions can be commonly used.

According to a second aspect of the present invention, a retainer collar is provided in a lower part of a sleeve having a punch head member attached to an upper end portion thereof so as to be able to move up and down in a state in which the retainer collar is prevented from falling down. An elastic member is interposed between the member and the retainer collar to form a unit,
A punch body provided with a cylindrical punch guide for guiding a punch body having a blade portion at a lower end portion in a vertically movable manner and the retainer collar is detachably connected, and provided in the punch guide so as to be vertically movable. The punch body is provided so as to be able to be removed upward from the punch guide, and a punch body is screwed to the sleeve so as to be vertically adjustable.

Therefore, it is easy to regrind the blade portion and adjust the height of the punch body, and it is easy to attach and detach the punch guide.

According to a third aspect of the present invention, in the second aspect of the present invention, the punch guide is detachably mounted on the guide holder, and the projection height of the punch head member with respect to the guide holder is constant. Since the projecting height regulating member for regulating the height is provided detachably on the guide holder, the punch guide and the punch body can be detached from the guide holder, and the punches having various shapes of blades can be provided. A guide holder can be commonly used for the body and the punch guide.

According to a fourth aspect of the present invention, a retainer collar is provided in a lower portion of a sleeve having a punch head member attached to an upper end thereof so as to be able to move up and down in a state in which the collar is prevented from falling down. An elastic member is interposed between the member and the retainer collar to form a unit,
A punch body having a blade portion at a lower end portion is provided by being screwed up and down to the sleeve so as to be vertically adjustable. Since the retainer collar is seated and provided, and a projection height regulating member for regulating the projection height of the punch head member with respect to the guide holder to a constant height is provided at the upper part of the recess, the configuration of the punch die is Further simplification can be achieved.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, a small-diameter projection is provided at the center of the lower surface of the guide holder, and the height of the projection is adjusted by a work clamp or a punch press in a punch press. Since the part protruded and formed on the upper surface of the work is provided at a height that allows it to enter the lower part of the guide holder, the work clamp holding the work enters the lower side of the guide holder and fits into the blade of the punch body. The work can be close to each other, and the dead zone of the work can be reduced. In addition, even when there is a protruded portion on the upper surface of the work, a close position can be machined without crushing the protruded portion.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of a punching die showing a first example according to an embodiment of the present invention.

FIG. 2 is an explanatory cross-sectional view of a punch die showing a second example according to the embodiment of the present invention.

FIG. 3 is an explanatory sectional view of a punching die showing a third example according to the embodiment of the present invention.

[Explanation of symbols]

 1,101 Punch head member 3,103 Sleeve 5,105 Retainer collar 7,107 Elastic member 11,111 Punch body 13 Punch guide 21,121 Guide holder 121P Projection 29,129 Lock ring

Claims (5)

[Claims] 1. A retainer collar is provided at a lower portion of a sleeve having a punch head member attached to an upper end thereof so as to be able to move up and down in a state where the retainer collar is prevented from falling down, and between the punch head member and the retainer collar. A punch head comprising: a unit provided with an elastic member interposed therebetween; and a screw portion for screwing a punch body having a blade portion at a lower end portion in a vertically adjustable manner on the inner peripheral surface of the sleeve. apparatus. 2. A retainer collar is provided in a lower part of a sleeve having a punch head member attached to an upper end thereof so as to be able to move up and down in a state where the retainer collar is prevented from falling out, and between the punch head member and the retainer collar. A cylindrical punch guide that guides a punch body having a blade portion at a lower end portion in a vertically movable manner and the retainer collar are provided so as to be detachably connected to each other; A punch die, characterized in that a punch body provided vertically movable therein is provided so as to be able to be removed upward from a punch guide, and the punch body is screwed to the sleeve so as to be vertically adjustable. 3. A projection height according to claim 2, wherein the punch guide is detachably mounted on the guide holder, and regulates a projection height of the punch head member with respect to the guide holder to a predetermined height. A punch die, wherein a regulating member is detachably provided on the guide holder. 4. A retainer collar is provided at a lower portion of a sleeve having a punch head member attached to an upper end thereof so as to be able to move up and down in a state where the retainer collar is prevented from falling down, and between the punch head member and the retainer collar. A punch body having a blade portion at a lower end portion is provided by being screwed to the sleeve so as to be vertically adjustable, provided as a unit with an elastic member interposed therebetween,
The retainer collar is seated and provided on a seat of a concave portion formed on an upper portion of a guide holder for directly guiding the punch body so as to be vertically movable, and a projection height of the punch head member with respect to the guide holder is regulated to a constant height. A punch die, wherein a protrusion height regulating member is provided above the concave portion. 5. The invention according to claim 4, wherein a small-diameter projection is provided in the center of the lower surface of the guide holder, and the height of the projection is formed by projecting a work clamp in a punch press or an upper surface of a work. Characterized in that the punched part is provided at a height such that the bent part can enter the lower part of the guide holder.