JPH05293560A - Forming die and utilization thereof - Google Patents

Abstract

PURPOSE:To allow the forming work of either a front side or a rear side of a metal plate and to unnecessitate the change of die attaching to the machine each time a forming direction is changed. CONSTITUTION:A punch 9 is attached movably only for a prescribed amount in the direction of the axial line on a punch head 5; and a cylindrical tool retainer 15 surrounding the outer circumference of the punch 9 is attached movably only for a prescribed amount in the direction of the axial line. Between the punch head 5 and the punch 9, an urethane rubber 19 is provided; and between the punch head 5 and a punch guide 15, an urethane rubber 21 is provided. Inside rugged crown members 25, 27 and outside rugged crown members 29, 33 are provided which selectively inhibit both the punch and the tool retainer corresponding respectively between the punch head 5 and the punch 9 and between the punch head 5 and the tool retainer 15 are relatively displaced in the direction mutually approaching the axial line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die and a method of using the same, and more particularly to a molding die for cutting and bending a bridge or the like, embossing and the like and a method of using the same.

[0002]

2. Description of the Related Art Plate material forming processes such as cutting and bending of bridges and embossing are generally performed by a pair of punches and dies.

[0003]

In the plate material forming process using a pair of punch and die, the forming direction of cut and raised, unevenness, etc. is either the front surface side or the back surface side of the plate material, that is, either upward or downward. In the case of performing the plate material forming processing of the same shape on both the front surface side and the back surface side of the plate material, the front surface punch and die and the back surface punch and die are separately required.

This not only increases the required number of punches and dies, but also requires changing the mounting of the punches and dies on the processing machine each time the molding direction is changed.
It causes a decrease in work efficiency.

The present invention has been made by paying attention to the above-mentioned problems in the conventional plate material forming process, and it is possible to perform the forming process on both the front surface side and the back surface side of the plate material.
It is an object of the present invention to provide an alternate type molding die and its use method in which it is not necessary to change the attachment of the die to the processing machine every time the molding direction is changed.

[0006]

According to the present invention, there is provided a punch head, and a punch attached to the punch head so as to be movable by a predetermined amount in the axial direction.
A cylindrical tool retainer that is attached to the punch head so as to be movable by a predetermined amount in the axial direction and that surrounds the outer periphery of the punch; a direction that is provided between the punch head and the punch and that separates them from each other in the axial direction. A punch biasing elastic member for biasing the punch head, a tool retainer biasing elastic member provided between the punch head and the punch guide for biasing the punch head and the punch guide in a direction away from each other in the axial direction, the punch head and the punch. And a punch fixing concave-convex crown for selectively prohibiting relative displacement of the punch head and the punch in a direction in which the punch head and the punch approach each other in the axial direction by rotationally displacing the punch head side and the punch side. The members, the punch head, and the tool retainer are provided with a relative rotational change between the punch head side and the tool retainer side. Forming die having a tool retainer fixing concave-convex crown member for selectively prohibiting relative displacement of the punch head and the tool retainer in the axial approaching direction by doing so. Achieved by

In order to achieve the above-mentioned object, the method of using the molding die according to the present invention is such that two molding dies having the above-mentioned constitution are arranged so as to face each other. In one molding die, the punch fixing concave-convex crown member prohibits relative displacement of the punch head and the punch in a direction in which they approach each other in the axial direction, and the fixing operation of the tool retainer fixing concave-convex crown member is performed. The punch head and the tool retainer are released to allow relative displacement in the axial direction toward each other, and in the other molding die, the punch head and the tool retainer are fixed by the concave and convex crown members for fixing the tool retainer. It is forbidden to displace the and relative to each other in the direction of approaching each other in the axial direction. Divided by said punch head and said punch is characterized by setting the state that allows a relative displacement in a direction approaching each other in the axial direction.

[0008]

According to the above-mentioned structure, the punch fixing concave-convex crown member prevents the punch head and the punch from relatively displacing in the axial direction, and the tool retainer fixing concave-convex crown member fixes the punch head and the punch. When the punch head and the tool retainer are released so that the punch head and the tool retainer can be displaced relative to each other in the axial direction, the forming die functions as a punch, while the tool retainer is fixed. The punch corrugated crown member prohibits relative displacement of the punch head and the tool retainer in a direction in which the punch head and the tool retainer approach each other in the axial direction, and the punch head corrugated crown member releases the fixing operation to disengage the punch head and the punch. By being set in a state in which relative displacement can be performed in the directions approaching each other in the axial direction, Molding die functions as a die.

[0009]

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 10 show an embodiment of a molding die according to the present invention. In these drawings, reference numeral 1 generally indicates a molding die, and this molding die 1 is made up of two identical structures, which are vertically opposed to each other as shown in the drawing, during the plate material forming process. Will be placed.

The molding die 1 has a punch head 5 having a shank portion 3. The punch head 5 is punched by a single through bolt 7 arranged at the center of the punch head 5.
Is concentric with the punch head 5 in the axial direction, that is, in FIGS.
Is attached so that only a predetermined amount Sa can be moved in the vertical direction. The punch head 5 has a flange portion 11
The tool retainer 15 is attached by a plurality of through bolts 13 arranged in the axial direction so as to be movable by a predetermined amount Sb in the axial direction. The tool retainer 15 has a tubular shape and is concentrically fitted to the guide shaft-shaped portion 17 of the punch head 5 so as to be slidable in the axial direction. At the same time, the tool retainer 15 is axially attached to the punch 9 by an inward flange portion 15a formed at the tip end portion. Is fitted inwardly so as to be slidable in the direction and surrounds the outer periphery of the tip of the punch 9.
It acts as a stripper at the same time as the axial guide.

A urethane rubber 19 is provided between the punch head 5 and the punch 9 as a punch biasing elastic member. The urethane rubber 19 has a cylindrical shape, and the through bolt 7 penetrates through the center hole of the urethane rubber 19.
And the punch 9 are urged in a direction away from each other in the axial direction. That is, the urethane rubber 19 biases the punch 9 downward with respect to the punch head 5 in the upper molding die 1 in FIGS. 1 and 2, and in the lower molding die 1. Pushes the punch 9 upward with respect to the punch head 5.

Between the punch head 5 and the tool retainer 15, a urethane rubber 21 as a tool retainer biasing elastic member is provided for each through bolt 13. Each urethane rubber 21 has a cylindrical shape, and the through bolt 13 penetrates each of its center holes, and urges the punch head 5 and the tool retainer 15 in the axial direction away from each other. That is, the urethane rubber 21 is the tool retainer 1 in the upper molding die 1 in FIGS.
5 is urged downward with respect to the punch head 5, and in the lower molding die 1, the tool retainer 15 is urged upward with respect to the punch head 5.

A compression coil spring 23 is attached between the punch 9 and the tool retainer 15.

An inner concave-convex crown portion 25 for fixing the punch is integrally formed at the end of the punch head 5 on the punch 9 side, and a cylindrical inner concave-convex crown is formed at the end of the punch 9 on the punch bed 5 side. A member 27 is arranged concentrically with the punch bed 5 so as to be rotatable around its central axis. The inner concave-convex crown portion 25 and the inner concave-convex member crown 27 face each other in the axial direction, and as shown in FIG.
Four recesses 25a, 2 each with a split angle of 45 degrees
7a and the convex portions 25b and 27b, the rotational position of the inner concave-convex crown member 27 with respect to the inner concave-convex crown member 25 is the convex portions 25b and 27b as shown in FIGS.
Is a rotational position (fixed operation position) opposite to each other, it is prohibited that the punch head 5 and the punch 9 are relatively displaced in a direction in which they approach each other in the axial direction due to mutual contact between the convex portions 25b and 27b. From this rotational position, as shown in FIGS. 9 and 10, the inner concave-convex crown member 27 is rotationally displaced 45 degrees with respect to the inner concave-convex crown portion 25, and the concave portion 25
When the inner concave-convex crown member 27 is located at a rotational position (fixing release position) where a and the convex portion 27b and convex portion 25b and the concave portion 27a face each other, the punch head 5 and the punch 9 are axially moved. The relative displacement is allowed in the directions in which they approach each other.

An outer concave-convex crown portion 29 for fixing the tool retainer is provided on the outer peripheral portion of the guide shaft portion 17 of the punch head 5.
Is fixedly mounted by a screw 31, and at the inner peripheral portion of the tool retainer 15, an outer concave-convex crown member 33 that axially abuts the flange portion 15a at one end is concentric with the tool retainer 15 and around the central axis thereof. It is rotatably arranged. The outer concave-convex crown members 29 and 33 are opposed to each other in the axial direction, and as shown in FIG. 6, four concave portions 29a and 33 are formed at a split angle of 45 degrees.
a and the convex portions 29b and 33b, the rotational position of the outer concave-convex crown member 33 with respect to the outer concave-convex crown member 29 is as shown in FIGS.
When b is in a rotational position (fixed operation position) facing each other, relative displacement of the punch head 5 and the tool retainer 15 in the axial direction toward each other is prohibited due to mutual contact between the convex portions 29b and 33b. Then, from this rotational position, as shown in FIGS.
Is rotationally displaced by 45 degrees with respect to the outer concave-convex crown member 29, and the concave portion 29a and the convex portion 33b, and the convex portion 29b and the concave portion 33a.
When the outer concave-convex crown portion 33 is located at a rotational position (fixing release position) opposite to each other, the punch head 5 and the tool retainer 15 are allowed to relatively displace in the axially approaching directions. It has become.

The inner concavo-convex crown member 27 and the outer concavo-convex crown member 33 are formed on the outer concavo-convex crown member 33, penetrate the axial elongated holes 35, and are screwed to the inner concavo-convex crown member 27 with a connecting pin 37 ( In FIG. 6, illustration is omitted for simplification of the drawing) and rotation operation pin 3
By means of 9, they are connected so that they can move relative to each other in the axial direction but cannot rotate relative to each other. The inner concave-convex crown member 27 and the outer concave-convex crown member 33 are connected to each other by rotating the concave portion 27a and the convex portion 33b, and the convex portion 29b and the concave portion 33a in the rotational directions as shown in FIGS. In order to meet the above condition, the rotational phase difference is 45 degrees from each other.

The connecting pin 37 and the rotating operation pin 39 respectively penetrate through a guide hole 41 formed in the tool retainer 15 and project to the outside. As shown in FIG. 4, the guide hole 41 is formed by connecting the inner concave-convex crown member 27 and the outer concave-convex crown member 33 with respect to the tool retainer 15.
Allowing relative rotational displacement of 5 degrees, and allowing the connecting body of the inner concave-convex crown member 27 and the outer concave-convex crown member 33 to move axially with respect to the tool retainer 15 at each rotational position. It is formed in a bidirectional hook shape.

The connecting body of the inner concave-convex crown member 27 and the outer concave-convex crown member 33 is urged toward the tip side of the tool retainer 15 by a compression coil spring 47 provided between the spring retainers 43 and 45.

Next, a plate material forming process using the forming die 1 having the above-described structure will be described. The state shown is
The connecting body of the inner concave-convex crown member 27 and the outer concave-convex crown member 33 of the upper molding die 1 is located at the punching operation rotation position as shown in FIG. 7, whereby the convex portion 25b of the inner concave-convex crown portion 25 is formed. And inner concave and convex crown member 27
27b of the outer concave-convex crown member 29 and the convex portion 33b of the outer concave-convex crown member 33, the convex portion 29b of the outer concave-convex crown member 29, and the concave portion of the outer concave-convex crown member 33. 33a are located at fixed release positions facing each other, and the connection body between the inner concave-convex crown member 27 and the outer concave-convex crown member 33 of the lower molding die 1 is a die as shown in FIG. The concave portion 25a of the inner concave-convex crown portion 25 and the inner concave-convex crown portion 25 are located at the fixed rotational position in which the convex portion 29b of the outer concave-convex crown member 29 and the outer convex-concave crown member 33b of the outer concave-convex crown member 33 face each other. Convex portion 27b of member 27, convex portion 2 of inner concave and convex crown member 25
5b and the concave portion 27a of the inner concave-convex crown member 27 are located at the fixing release positions facing each other, and the upper molding die 1
Shows a state in which the lower mold 1 functions as a punch to perform downward embossing.

When the lower molding die 1 is used as a fixed side and a downward driving force is applied to the shank portion 3 of the upper molding die 1, the upper molding die 1 descends, as shown in FIG. As shown, the tool retainer 1 of the lower mold 1
The tool retainer 15 of the upper molding die 1 contacts the plate material W placed on the plate 5, and the plate material W is sandwiched by the upper and lower tool retainers 15 and clamped by them.

As a result, the upper molding die 1 is further lowered, so that the downward driving force applied to the shank portion 3 of the upper molding die 1 is projected from the upper punch bed 15 by the convex portions 25b and 27b. Rigidly transmitted to the upper punch 9 through the upper inner concave-convex crown portion 25 and the inner concave-convex crown 27 which are in contact with each other, and further transmitted to the punch 9 of the lower molding die 1 via the plate material W, The lower punch 9 acts as a counter-pushing counter member to move downward while compressing and deforming the lower urethane rubber 19, and the downward drive given to the shank portion 3 of the upper molding die 1 accordingly. The force is transmitted to the upper tool retainer 15 via the urethane rubber 21, and the tool retainer 15 of the lower molding die 1 facing the upper tool retainer 15 has a convex portion 29.
b and 33b are axially rigidly connected to the lower punch bed 5 by the outer concave-convex crown member 29 and the outer concave-convex crown 33, which are in contact with each other,
The upper tool retainer 15 is also the lower tool retainer 15.
Also does not move in the axial direction, and the upper urethane rubber 21 is compressed and deformed.

Due to the compressive deformation of these urethane rubbers 19 and 21, as shown in FIG. 2, the above-mentioned immobile upper and lower punches 9 and 9 with the lower punch 9 sandwiching the plate material W vertically. Of the tool retainer 15 and downward embossing is performed on the plate material W.

When performing the upward embossing molding, the connecting body of the inner concave-convex crown member 27 and the outer concave-convex crown member 33 of the upper molding die 1 is positioned at the die operation rotational position as shown in FIG. As a result, the convex portion 29b of the outer concave-convex crown member 29 and the convex portion 29b of the outer concave-convex crown member 33 are positioned at the fixed operation position where they are opposed to each other, and the concave portion 25a of the inner concave-convex crown portion 25 and the convex portion of the inner concave-convex crown member 27 are positioned. 27b, the convex portion 25b of the inner concavo-convex crown member 25 and the concave portion 27a of the inner concavo-convex crown member 27 are located at the fixing release positions facing each other, and the upper molding die 1 functions as a die.

A connecting body of the inner concave-convex crown member 27 and the outer concave-convex crown member 33 of the lower molding die 1 is shown in FIG.
The punch operating rotation position as shown in Fig. 3B, whereby the convex portion 25b of the inner concave-convex crown portion 25 and the concave portion 27b of the inner concave-convex crown member 27 are located in the fixed operating position in which they face each other, and the outer concave-convex crown portion is formed. The concave portion 29a of the member 29 and the convex portion 33b of the outer concave-convex crown member 33, and the convex portion 29b of the outer concave-convex crown member 29 and the concave portion 33a of the outer concave-convex crown member 33 are respectively located at the fixing releasing positions facing each other, and The molding die 1 functions as a punch.

As a result, the downward emboss molding and the upward emboss molding are changed only by changing the rotational position of the connecting body of the inner concave-convex crown member 27 and the outer concave-convex crown member 33 of each of the upper and lower molding dies 1.

Therefore, as shown in FIG. 11, the plate material forming process in which the downward embossed portion Ea and the upward embossed portion Eb are mixed in one plate material W does not require die replacement, and is simple and efficient. Be able to be done well.

In the above, the present invention has been described in detail with respect to a specific embodiment, but the present invention is not limited to this, and various embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.

[0029]

As can be understood from the above description, according to the molding die and the method of using the molding die of the present invention, two molding dies having the same structure are arranged to face each other, and the inner side of each molding die is arranged. Only by changing the rotational position of the connecting body of the concave-convex crown member and the external concave-convex crown member, each molding die functions switchably as either a punch or a die. Both the front side and the back side of the plate material such as embossing can be performed with the same molding die without changing the attachment of the die to the processing machine, reducing the required number of dies and setup. Time savings will be possible.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a molding die according to the present invention in a plate material clamped state.

FIG. 2 is a vertical cross-sectional view showing an example of a molding die according to the present invention in a molding completed state.

FIG. 3 is a plan view showing an embodiment of a molding die according to the present invention.

FIG. 4 is a side view showing an embodiment of a molding die according to the present invention.

FIG. 5 is a side view showing an example of a connected body of an inner concave-convex crown member and an outer concave-convex crown member used in the molding die according to the present invention.

FIG. 6 is a perspective view showing a combination of concave and convex crown members used in the molding die according to the present invention.

FIG. 7 is a partial cross-sectional view showing a state in which a connecting body of an inner concave-convex crown member and an outer concave-convex crown member in a molding die according to the present invention is in a punch operation rotation position.

FIG. 8 is a view taken along the line VIII-VIII in FIG.

FIG. 9 is a partial cross-sectional view showing a state in which the connecting body of the inner concave-convex crown member and the outer concave-convex crown member in the molding die according to the present invention is in the die operation rotation position.

FIG. 10 is a view taken along line XX of FIG.

FIG. 11 is a perspective view showing a plate material in which downward embossing and upward embossing that can be formed by a forming die according to the present invention are mixed.

[Explanation of symbols]

 1 Molding Die 5 Punch Head 9 Punch 15 Tool Retainer 19 Urethane Rubber (Punch Energizing Elastic Member) 21 Urethane Rubber (Tool Retainer Energizing Elastic Member) 25 Inner Uneven Crown Part 27 Inner Uneven Crown Member 29, 33 Outer Uneven Crown Member

Claims (2)

[Claims] 1. A punch head, a punch movably attached to the punch head in an axial direction by a predetermined amount, and a punch head movably attached to the punch head in an axial direction by a predetermined amount to surround the outer periphery of the punch. A cylindrical tool retainer, a punch biasing elastic member provided between the punch head and the punch and biasing the punch head and the punch in a direction away from each other in the axial direction, and provided between the punch head and the punch guide. And a tool retainer urging elastic member for urging the two in a direction away from each other in the axial direction, and the punch head and the punch are provided with relative rotational displacement between the punch head side and the punch side to thereby cause the punch. A punch fixing concave-convex crown member for selectively prohibiting relative displacement of the head and the punch in the axially approaching direction. , The punch head and the tool retainer are provided with relative rotational displacement between the punch head side and the tool retainer side, whereby the punch head and the tool retainer are relatively displaced in a direction in which they approach each other in the axial direction. A molding die having an uneven crown member for fixing a tool retainer that is selectively prohibited. 2. The two molding dies according to claim 1 are arranged so as to face each other, and one of the two molding dies is provided with a punch fixing concave-convex crown member and the punch head. The punch head and the tool retainer are prevented from relative displacement in a direction in which they approach each other in the axial direction, and the punch retainer and the tool retainer move in a direction in which they approach each other in the axial direction by releasing the fixing operation of the concave and convex crown members for fixing the tool retainer. Displacement is allowed, and in the other molding die, the tool retainer fixing concave-convex crown member prohibits relative displacement of the punch head and the tool retainer in a direction in which they approach each other in the axial direction, and also for punch fixing. Relative displacement in a direction in which the punch head and the punch approach each other in the axial direction by releasing the fixing operation by the uneven crown member. A method of using a molding die, which is characterized in that it is set in a state in which it is allowed to do.