JPH11147136A - Die device for forming projection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die device capable of executing louvering smoothly in the whole process from the start to the finish in forming a small projection by louvering on an upper surface of a work. SOLUTION: In a die for forming projections on the surface of a working by cooperation of a punch 3 and a die 7, the punch 3 is equipped with a cylindrical punch guide 9. In the upper part of this guide 9, a punch driver 15 equipped with a punch head 17 at its upper end is installed freely movable up and down and energized toward upper direction. An elastic member 23 is installed between the punch driver 15 and an up and down slider 21 freely movable upward and downward in the punch guide 9 at the lower part of the punch driver 15; and at the lower end of a punch body 25 in the punch guide 9 at the lower position of the up and down slider 21, a louvering blade 25c to form louvered projections is installed on the work surface; and the upper surface of the punch body 25 is made to contact a slope 21A on the lower surface of the up and down slider 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection forming die apparatus which is used by being mounted on a punch press such as a turret punch press. More specifically, the present invention relates to a method for scratching a part of a plate-like work surface. The present invention relates to a projection forming die that cuts and raises by an action or the like to form a small projection.

[0002]

2. Description of the Related Art As a prior example relating to the present invention, there is, for example, JP-A-9-85358. The preceding example is shown in FIG.
As shown in FIG. 7, a punch driver 205 having a punch head 203 at an upper end is provided on a cylindrical punch guide 201 so as to be vertically movable. And the punch driver 2
A substantially semicircular or substantially triangular blade member 207 having a cutting and raising blade at its tip is supported rotatably in the horizontal direction via a pin 209 in the punch guide 201 at a position below the blade 05. The blade member 207 is configured to be urged in a direction away from the upper surface of the workpiece W by the urging means 211 provided therein. In the above configuration, the punch head 203 is pressed by the striker 213 provided on the punch press so as to be vertically movable, and the stripper spring 21 is pressed.
When the blade driver 207 is moved downward by the protrusion 217 provided at the lower end of the punch driver 205, the blade
07 is rotated in the horizontal direction about the pin 209, and the blade member 20 is attached to the upper surface of the work W supported by the die 219.
As the cutting blade at the tip of 7 is bitten,
A small projection 2 is formed on the upper surface of
21.

[0003]

In the configuration of the above-mentioned prior art, the blade member 207 is horizontally rotatable via the pin 209 in a state where the blade member 207 is urged in the direction away from the work W by the urging means 211. Since the blade member 207 is internally provided in the punch guide 201, it is troublesome to machine a pin hole in the punch guide 201, and it is troublesome to mount the blade member 207 and the like in the punch guide 201. There is a problem that processing and assembly are troublesome.

Further, since the blade member 207 is directly pressed downward by the protrusion 217 provided at the lower end of the punch driver 205, the blade member 207 is rotated to cut and raise the projection 221. To the punch driver 205 so that no excessive or insufficient
The mounting height position of the punch head 203 must be accurately adjusted, and the adjustment of the mounting position of the punch head 203 is troublesome.

Further, a punch driver 205 that moves up and down.
The blade member 207 is fixed to the pin 2 by the projection 217 at the lower end of the blade.
Since it is configured to rotate horizontally around 09,
The contact portion between the protruding portion 217 and the blade member 207 gradually becomes an inclined surface, and the component force for rotating the blade member 207 in the horizontal direction gradually decreases, so that the protrusion 221 is cut and raised and the molding accuracy is improved. There is a problem in planning.

[0006]

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 is to cut and raise a part of the work surface by cooperation of a punch and a die. In a projection forming die for forming projections, a punch is provided with a cylindrical punch guide which is vertically movably supported by a punch holder in a punch press, and a punch head is provided on an upper end of the punch guide. The provided punch driver is provided to be movable up and down and biased upward,
An inclined surface is provided on the lower surface of an upper and lower slider movably provided in the punch guide at a position below the punch driver, and an inclined member is provided between the upper and lower slider and the punch driver via an elastic member. A lower part of a punch body provided at a position below the upper and lower sliders and movably up and down in the punch guide and movably in the radial direction of the punch guide is provided so as to protrude downward from a work holder provided at a lower part of the punch guide. At the same time, at the lower end of the punch body, a cutting and raising blade for cutting and raising a projection on the work surface is provided, and an inclined surface which is in surface contact with the inclined surface formed on the lower surface of the upper and lower sliders is formed on the upper surface of the punch body. It is a configuration provided.

According to a second aspect of the present invention, in the first aspect of the present invention, the work retainer includes a guide hole for guiding the punch body in a radial direction, and a slide contact surface formed at a lower portion of the punch body. The sliding body is provided with a sliding surface which is in sliding contact with the punch body to limit the amount of downward projection of the punch body.

According to a third aspect of the present invention, in the first or second aspect of the invention, a plurality of inclined surfaces having different inclination directions are formed on the lower surface of the upper and lower sliders, and each of the inclined surfaces is in surface contact. A plurality of punch bodies each having an inclined surface on the upper surface are provided so as to be able to approach and separate from each other.

According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, a punch tip having a cutting and raising blade is detachably provided at a lower portion of the punch body.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the punch chip has a polygonal shape having cut and raised blades at a plurality of locations.

According to a sixth aspect of the present invention, in the first aspect of the invention, the die is provided with a protective member on the upper surface which is softer than the material of the die body.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a projection forming die according to this embodiment is a punch holder 1 in a punch press (not shown) such as a turret punch press.
(In the case of a turret punch press, this corresponds to the upper turret.) The punch 3 is provided, and the die 7 is supported by the die holder 5 (same lower turret) in the punch press.

The punch 3 has a cylindrical punch guide 9 supported by the punch holder 1 so as to be vertically movable. The punch guide 9 is vertically movably supported at a predetermined height by well-known lifter springs 11 provided at a plurality of positions of the punch holder 1.

A ring-shaped retainer collar 13 is detachably mounted on the upper part of the punch guide 9 through an O-ring 14. The retainer collar 13 penetrates the retainer collar 13 in a vertically movable manner, and is inserted into the punch guide 9 on the lower side. The punch head 1 is provided at the upper end of the punch driver 15 in which the
7 is screwed and fixed so that the height position can be adjusted. A strong stripper spring (elastic member) 19 is mounted between the retainer collar 13 and the punch head 17, and the punch driver 15 is constantly urged upward by the stripper spring 19.

An upper and lower slider 21 having a lower surface formed on an inclined surface 21A is vertically movably fitted into the punch guide 9 at a position below the punch driver 15. The upper surface of the upper and lower slider 21 and the punch driver A suitable elastic member 23 made of, for example, a coil spring, a disc spring, urethane rubber, or the like is interposed between the lower surface of the first and second members.

A punch body 25 is provided inside the punch guide 9 at a position below the upper and lower sliders 21 so as to be vertically movable and movable in the radial direction of the punch guide 9. At the lower end of the punch guide 9, a disc-shaped work holder 27 for restricting the downward movement of the punch body 25 is detachably attached by a plurality of bolts (not shown).

More specifically, as shown in detail in FIG.
The upper surface of the punch body 25 is formed on an inclined surface 25A in surface contact with the inclined surface 21A of the upper and lower sliders 21. Then, in the center of the lower surface of the punch body 25,
The work hole 27 is guided by a radial guide hole 27A formed in the center of the work retainer 27 and is movable in the radial direction.
7A is provided with a lower protruding portion 25B that can freely protrude downward. The lower surface of the lower protruding portion 25B has a lower surface protruding from the upper surface of the plate-like work W supported on the die 7 by a scratching action. Cutting and raising blade 25 for cutting and raising
C is provided to protrude.

The lower surface 25D of the punch body 25 at the side of the lower projecting portion 25B is slidably contacted with the inclined surfaces 27B formed on both sides of the guide hole 27A in the work holder 27. It is formed on the surface. A triangular concave portion 27C for receiving a projection cut and raised by the cutting and raising blade 25C is provided at a position on the lower surface of the work holder 27 opposite to the cutting and raising blade 25C.
Are formed.

In order to keep the inclined surface 21A of the vertical slider 21 and the inclined surface 25A of the punch body 25 always in surface contact, a slide spring seat 29 is provided on the inner surface of the punch guide 9 so as to be vertically movable. And a hole 25H provided in the punch body 25, an elastic member 31 such as a coil spring for urging the punch body 25 on one side in the radial direction toward the upper side of the inclined surface 27B of the work holder 27. Is armed.

The inclined direction of the inclined surface 21A of the vertical slider 21 and the inclined surface 27B formed on the work holder 27 are opposite to each other, and the inclined surface 21A of the upper and lower slider 21 is inclined with respect to the horizontal. It is formed with a steep slope.

In the above-described configuration, in a state where the plate-shaped work W is placed and positioned on the die 7, the punch head 17 is pressed and lowered by the striker ST which is vertically movable on the punch press. When the entire punch 3 is lowered against the work 11, the work presser 27 provided at the lower end of the punch guide 9 contacts the upper surface of the work W, and when the work W is pressed against the die 7, the lowering of the punch guide 9 stops. .

Thereafter, when the punch head 17 is further lowered against the stripper spring 19, the upper and lower sliders 21 are lowered via the elastic members 23, so that the inclined surfaces 21A of the upper and lower sliders 21 and the inclined surfaces of the punch body 25 are formed. Due to the surface contact of 25A, the punch body 25 is moved downward, and the punch body 25 is moved radially inward of the punch guide 9 against the urging force of the elastic member 31 by the component force acting in the radial direction. It will be.

At this time, since the lower surface 25D of the punch body 25 is in surface contact with the inclined surface 27B of the work holder 27,
The punch body 25 gradually descends along the inclined surface 27B. Then, a triangular cutting and raising blade 25C formed on the lower surface of the lower protruding portion 25B of the punch body 25 is formed.
Is projected downward from the lower surface of the work retainer 27, the cutting and raising blade 25C gradually moves radially inward while cutting into the upper surface of the work W.

That is, as shown by an arrow F in FIG. 3, the cutting and raising blade 25C cuts the upper surface of the work W obliquely downward, and scratches the upper surface of the work W to project. 33. The protrusion 33 is
When gradually cut and raised by the cutting and raising blade 25C,
Triangular recess 2 formed on the lower surface of work holder 27
7C and gradually pressed into the recess 27C to form an accurate triangular shape.

As can be understood from the above configuration, in this embodiment, the elastic member 23 is interposed between the punch driver 15 and the upper and lower sliders 21 so that, for example, the mounting position of the punch head 17 with respect to the punch driver 15 can be adjusted. Even if it is not accurate and is too high, there is no problem because the elastic member 23 is absorbed by contraction.

When the punch driver 15 is gradually lowered by the lowering of the striker ST and the cutting and raising blade 25C provided on the punch body 25 cuts into the upper surface of the work W,
Since the elastic member 23 is gradually compressed and the repulsive force is gradually increased, the horizontal component acting between the inclined surface 21A of the vertical slider 21 and the inclined surface 25A of the punch body 25 is gradually increased. Therefore, as the cutting depth of the cutting and raising blade 25C with respect to the upper surface of the work W increases, the horizontal component force increases, and even if the cutting and raising resistance of the projection 33 tends to gradually increase, The protrusion 33 can be cut and raised smoothly.

After the protrusion 33 is formed on the upper surface of the work W as described above, when the striker ST is raised, the punch driver 1 is actuated by the action of the stripper spring 19.
5, the punch body 25 and the upper and lower sliders 21 return to their original positions by the action of the elastic member 31, and the entire punch 3 returns to the original ascending position by the action of the lifter spring 11.

FIG. 4 shows a second example. This second
In the example, the lower end of a connecting member 35 such as a bolt penetrating the punch driver 15 so as to be vertically movable is screwed and connected to the upper and lower slider 21. And the upper and lower slider 2
The T-shaped or dovetailed slide projection 25T formed on the inclined surface 25A of the punch body 25 is slidably engaged with the T-shaped or dovetailed guide groove 21G formed on the one inclined surface 21A. The other configuration is the same as the configuration of the first example described above.

The connecting member 35 is connected to the upper and lower sliders 2.
1 or the upper and lower sliders 21 are connected to the punch driver 15 through the upper and lower sliders so that the upper and lower sliders 21 can move freely. It is a relative matter whether to provide the slide projection 25T on the body 25 or to form a guide groove on the punch body 25 side and to provide a slide protrusion slidably engaging with the guide groove on the upper and lower slider 21 side. is there.

In the second example, the punch driver 15 and the upper and lower sliders 21 are connected via a connecting member 35 so as to limit separation in the vertical direction.
Since the upper and lower sliders 21 and the punch body 25 are mechanically engaged and connected by the engagement between the 1G and the slide protrusions 25T, the connected portions can be handled as a unit and the assembly can be easily performed. Things.

Further, with the above configuration, the vertical slider 21 can be lifted via the connecting member 35, and the punch body 25 can be moved by the slidable mechanical engagement between the guide groove 21G and the slide projection 25T. 2
1, the punch body 25 can be lifted by utilizing the repulsive force of the stripper spring 19, and the cutting and raising blade 25 can be reliably removed from the bite state with respect to the work W. Things.

FIG. 5 shows a modified form of the punch body 25. The parts that are significantly different from the punch body 25 are cut and raised at a plurality of positions.
This is a configuration in which a polygonal punch chip 37 provided with D is detachably mounted on the punch body 25 via a fixture 39 such as a bolt.

In this configuration, when one cutting and raising blade 37A of the punch chip 37 is worn, it can be used by replacing it with the adjacent cutting and raising blade 37B, and all the cutting and raising blades 37A to 37D have worn. Sometimes punch tip 3
7 can be used by detaching and replacing.

FIG. 6 shows a third example of the punch 3 described above, which is different from the punch 3 in that the lower surface of the upper and lower sliders 41 has an inclined surface 4 inclined from the center to the outside.
1A and 41B are symmetrically provided to face each other, and a first punch body 43 having the same shape as the punch body 25 and a second punch body 45 having a shape symmetrical to the first punch body 43 are arranged to face each other. And between the first and second punch bodies 43, 45, the two punch bodies 43, 45
And an elastic member 46 such as a coil spring acting to separate the elastic members 46 from each other.

As shown in FIG. 7, the punch bodies 43 and 45 have inclined surfaces 25 of the punch body 25.
A, inclined surfaces 43A and 45A corresponding to the lower protruding portion 25B, the cutting and raising blade 25C and the inclined lower surface 25D, lower protruding portions 43B and 45B, cutting and raising blades 43C and 45C, and inclined lower surfaces 43D and 45D, respectively. ing.

The work presser 47 corresponding to the work presser 27 is provided with first and second punch bodies 43 and 45.
And a work hole 27A corresponding to the inclined surface 27B in a V-shape and having no concave portion corresponding to the concave portion 27C. Has a slightly different configuration.

However, since the configuration other than the above-described configuration is the same as the configuration of the first example described above, and its operation is also the same, detailed description will be given by assigning the same reference numerals to components having the same function. Description is omitted.

In the third example, the punch head 17
Is pressed and lowered by the striker ST, the first and second punch bodies 43 and 45 move so as to approach each other, and the cutting and raising blades 43C and 45C provided at the lower end.
Since the projection 33 is formed by cutting and raising,
As shown in FIG. 8, the protrusions 33 cut and raised by the cutting and raising blades 43C and 45C are formed close and symmetrically.

In this case, the vertical surface 3 on the opposite side of the projections 33
Since the interval of 3F is always constant, the vertical plane 3
When the 3F is used as a positioning surface, for example, the two projections 3 are inserted into an elongated hole or a square hole punched in a member to be positioned.
The positioning of the member to be positioned can be performed with high accuracy by inserting and positioning.

FIG. 9 shows a die 7 used to face the punch 3. In a hole 7H formed on the upper surface of the die 7, a disk-shaped protective member 49 made of a resin such as plastic or a non-ferrous metal, which is softer than the material of the die body, is detachably provided.

According to the above configuration, for example, when the punch head 17 of the punch 3 is erroneously pressed with the striker ST without placing the work W on the die 7, the cut-and-raised portion provided at the lower portion of the punch body is provided. The blade does not cut directly into the hard die 7 and can protect the raised blade.

[0042]

As will be understood from the above description, in the invention according to the first aspect, an elastic member is interposed between the punch driver and the upper and lower sliders, and the upper and lower sliders and the lower end are cut off. Since the punch body with a razor blade is slidably in surface contact with the punch body via the inclined surface, the mounting position of the punch head provided at the upper end of the punch driver is not accurate and the vertical stroke is too large. Even if it is not accurate, the stroke error can be absorbed by the contraction of the elastic member.

Further, since the repulsive force is increased by the compression of the elastic member, the contact pressure of the inclined surface between the upper and lower sliders and the punch body can be increased, and the punch body can be moved radially inward. The horizontal component can be increased, and the cutting and raising of the protrusion on the upper surface of the work can be performed smoothly.

According to a second aspect of the present invention, in the first aspect of the present invention, the work retainer has a guide hole for guiding the punch body in a radial direction and a sliding contact surface formed at a lower portion of the punch body. Since the sliding body is provided with a sliding contact surface that restricts the amount of downward projection of the punch body by sliding contact, the punch body can be accurately moved in the radial direction, and the cutting blade is cut into the work. Is properly performed.

According to a third aspect of the present invention, in the first or second aspect of the invention, a plurality of inclined surfaces having different inclination directions are formed on the lower surface of the upper and lower sliders, and each of the inclined surfaces is in surface contact. Since a plurality of punch bodies each having an inclined surface on the upper surface are provided so as to be able to approach and separate from each other, a plurality of protrusions can be formed at the same time, and the dimension between the vertical surfaces of both protrusions can always be formed constant. Things.

According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, a punch tip having a cutting and raising blade is detachably provided at a lower portion of the punch body. When the cutting and raising blade is worn, it can be easily attached and detached and replaced.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, since the punch tip has a polygonal shape having a plurality of cut-and-raised blades, it is easy to wear the cut-and-raised blade. Can be handled.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the die has a configuration in which a protective member softer than the material of the die body is provided on the upper surface. Even if the blade is in contact with the upper surface of the die, the cutting and raising blade can be protected.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a punch according to a first example of the present invention.

FIG. 2 is an explanatory perspective view showing details of a punch body and a work presser.

FIG. 3 is an explanatory diagram showing an example of forming a projection on the upper surface of a work.

FIG. 4 is an explanatory sectional view of a punch according to a second example.

FIG. 5 is an explanatory view showing attachment of a punch chip to a punch body.

FIG. 6 is an explanatory sectional view of a punch according to a third example.

FIG. 7 is an explanatory perspective view showing details of a punch body and a work holder according to a third example.

FIG. 8 is an explanatory diagram showing a case where a plurality of protrusions are formed on the upper surface of a work.

FIG. 9 is an explanatory perspective view showing a configuration of a die.

FIG. 10 is an explanatory sectional view of a punch according to a prior example.

[Description of Signs] 3 Punch 7 Die 9 Punch Guide 15 Punch Driver 17 Punch Head 19 Stripper Spring 21, 41 Vertical Slider 21A, 25A, 27B Inclined Surface 23 Elastic Member 25, 43, 45 Punch Body 25B Lower Projection 25C, 37A ~ 37D Cutting and raising blade 25D Lower surface 27,47 Work holder 27A Guide hole 27C Depression 33 Projection 37 Punch tip 49 Protective member

Claims (6)

[Claims] In a projection forming die for forming a projection by cutting and raising a part of a work surface by cooperation of a punch and a die, the punch is supported by a punch holder in a punch press so as to be vertically movable. A punch driver having a cylindrical punch guide is provided above the punch guide, and a punch driver having a punch head at the upper end is provided so as to be vertically movable and urged upward. An inclined surface is provided on the lower surface of an upper and lower slider movably provided on the lower surface of the upper and lower sliders, and an elastic member is provided between the upper and lower sliders and the punch driver. The lower part of the punch body, which is freely movable up and down and can move in the radial direction of the punch guide, can project downward from the work holder provided at the lower part of the punch guide. The punch body is provided with a cutting and raising blade at the lower end of the punch body for forming a projection on the surface of the work, and the inclined surface formed in contact with the inclined surface formed on the lower surface of the upper and lower sliders. A projection forming die apparatus provided on an upper surface of a projection. 2. The punch according to claim 1, wherein the work retainer has a guide hole for guiding the punch body in a radial direction and slides on a sliding contact surface formed at a lower portion of the punch body. A projection forming mold device provided with a sliding contact surface for limiting an amount of downward projection. 3. The method according to claim 1, wherein
A plurality of inclined surfaces having different inclination directions are formed on the lower surface of the upper and lower sliders, and a plurality of punch bodies having an inclined surface on the upper surface in surface contact with each of the inclined surfaces are provided so as to be able to approach and separate from each other. Characteristic projection forming die apparatus. 4. A projection forming die apparatus according to claim 1, wherein a punch chip having a cutting and raising blade is detachably provided at a lower portion of the punch body. . 5. The projection forming die apparatus according to claim 4, wherein the punch chip has a polygonal shape having cut and raised blades at a plurality of positions. 6. The projection forming die apparatus according to claim 1, wherein the die has a structure in which a protective member softer than the material of the die body is provided on the upper surface.