JP2001105048A - Die device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of holding the lower end of a punch guide and a stripper plate in tight contact by using a constitution in which a stripper plate is arranged attachably/detachably in the lateral direction at the lower end part of a punch guide into which a punch body is inserted so that the punch body is held in a vertically movable manner. SOLUTION: In a die device 1 in which a stripper plate 5 is attachably/ detachably arranged at the lower end part of punch guide 3 into which a punch body 9 is inserted so as to be held in a vertically movable manner, a stripper holder 47 which supports the stripper plate 5 attachably/detachably in the lateral direction is arranged at the lower end part of the punch guide 3 in a vertically movable manner. When the stripper holder 47 is raised, the stripper plate 5 supported by the stripper holder 47 is brought into tight contact with the lower end part of the punch guide 3 and, a seal member 61 to hold the space between the punch guide 3 and the stripper plate 5 airtight is arranged at the lower end part of the punch guide 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold 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 punch guide in which a punch body is supported so as to be vertically movable. A mold device having a stripper plate detachably provided at a lower end of the mold device,
The present invention relates to a mold apparatus that does not have a slight play between the punch guide and the stripper plate, and also relates to a mold apparatus that can easily perform height adjustment without using a tool.

[0002]

2. Description of the Related Art A punch die as a die device used by being mounted on a punch holder (upper turret) in a punch press such as a turret punch press has a cylindrical shape supported vertically by the punch holder. A punch body having a punch blade portion at a lower end portion is vertically movably fitted into and supported by a punch guide, and a retainer collar mounted on an upper portion of the punch holder and a punch head screwed on an upper end portion of the punch body. It is a configuration in which a strong stripper spring is mounted between the two. The punch guide has a stripper plate formed at the lower end with a hole having a shape corresponding to the cross-sectional shape of the punch blade.

[0003]

In a configuration in which a stripper plate is detachably provided at the lower end of the punch guide, a type in which the stripper plate is fitted and mounted to the punch guide from below, and the lower end of the punch guide is formed. There is a type in which a stripper plate is attached to and detached from a guide portion in a lateral direction (a direction orthogonal to the axis of a punch guide).

In the type in which the stripper plate is fitted to and removed from the punch guide from below, the fitting state between the stripper plate and the punch guide is relatively strong, and there is no slight gap in the vertical direction. This is desirable because it is in close contact.

However, in the type in which the stripper plate is attached to and detached from the lateral guide portion formed at the lower end portion of the punch guide, a small vertical gap exists between the punch guide and the stripper plate. When the punch guide moves up and down, an abnormal noise is generated due to the presence of the above minute gap, and oil mist etc. is generated from the minute gap between the periphery of the punch blade provided at the lower end of the punch body and the hole peripheral surface of the stripper plate. When the fluid is to be ejected, there is a problem that the fluid easily escapes from the minute gap between the punch guide and the stripper plate, and the fluid cannot be ejected effectively.

As a punch die capable of performing height adjustment, a die capable of performing height adjustment without being affected by the biasing force of a stripper spring has been developed. 10-2
There is 44327 gazette. In this prior example, the haunch head is buried in a spring collar having a stripper spring mounted therein, and when adjusting the height, the punch head needs to protrude greatly from the spring collar, and the operation of adjusting the height is troublesome. In addition, there is a problem that the overall configuration is relatively complicated.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a first aspect of the present invention is directed to a stripper plate provided at a lower end portion of a punch guide in which a punch body is vertically movably fitted and supported. In a mold device having detachably provided, at the lower end of the punch guide, a stripper holder for detachably supporting a stripper plate in a lateral direction is provided so as to be vertically movable, and when the stripper holder is raised, The stripper plate supported by the stripper holder is in close contact with the lower end of the punch guide.

According to a second aspect of the present invention, in the mold apparatus according to the first aspect, a seal member is provided at a lower end portion of the punch guide for airtightly holding the space between the punch guide and the stripper plate. Configuration.

According to a third aspect of the present invention, a retainer collar is provided on an upper portion of a punch guide in which a punch body is vertically movably mounted, and is provided only movably up and down within a spring collar provided integrally with the retainer collar. A biasing means for biasing the punch head upward is provided between the punch head and the retainer collar, and a lifting / lowering regulating portion capable of regulating upward movement of the punch head is provided on the spring collar. The punch head and the upper end of the punch body are screwed so as to be vertically adjustable relative to each other, and the retainer collar is used to rotate the punch head relative to the punch body. It is configured to be rotatable and fixed on the guide.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, in a mold apparatus 1 according to an embodiment of the present invention, a state is shown in which a punch head is pressed by a striker and is lowered most. The mold apparatus 1 includes a cylindrical punch guide 3 that is vertically movably supported by a punch holder (not shown) such as an upper turret in a turret punch press. A punch body 9 having a punch blade portion 7 is fitted and supported in a vertically movable manner at a lower end portion which penetrates a stripper plate 5 provided at a lower end portion of the punch guide 3.

A retainer collar 1 is provided on the upper part of the punch guide 3 via a stopper 11 such as an O-ring.
The lower end of a cylindrical spring collar 15 is fitted and fixed to a retainer collar 13 via a stopper 17. The spring collar 15 and the retainer collar 13 are
Are fixed integrally so as not to rotate relative to each other.

A punch head 21 is screwed to the upper end of the punch body 9 extending vertically upward through the retainer collar 13 so as to be vertically movable. A strong stripper spring 23 is elastically mounted between the retainer collar 13. The punch head 21 is provided with a locking pin 27 which is vertically movably engaged with an elongated hole 25 provided in the spring collar 15 in the vertical direction. The rotation is regulated.

In order to restrict the upward movement of the punch head 21 due to the urging force of the stripper spring 23 as the urging means, an annular stepped portion as an up-and-down restricting portion is provided on the inner peripheral surface of the upper end of the spring collar 15. 15A are formed. The flange 21F provided on the punch head 21 comes into contact with the step 15A, whereby the elevation is restricted.

In order to adjust the screwing relationship between the punch body 9 and the punch head 21 to adjust the height, a flange 3F provided at the upper end of the punch guide 3 is provided as shown in FIG. , The push button 29 is in the radial direction (FIG. 2).
In the left and right directions). The push button 29 is urged outward by an elastic member 31 such as an elastic coil spring.
Stopper pin 33 penetrating the push button 29 up and down
Is engaged with the radial groove 35 formed in the punch guide 3 so that it does not come off.

An upper end of the stopper pin 33 has a circumferential groove 37 formed on the lower surface of the retainer collar 13 and a plurality of engaging recesses 39 formed in a circumferential direction at a predetermined pitch outside the circumferential groove 37. In a normal state, the push button 29 is pressed outward by the action of the elastic member 31 so that the upper end of the stopper pin 33 is engaged with the engagement recess 39. There is a fixed state where rotation of the retainer collar 13 with respect to the punch guide 3 is prevented.

In the above configuration, the flange portion 21F of the punch head 21 is connected to the step portion 15A of the spring collar 15.
When in contact with the inner peripheral groove 3, the push button 29 is pressed inward against the urging force of the elastic member 31, the upper end of the stopper pin 33 is released from the engagement recess 39.
7, the retainer collar 13 can be rotated relative to the punch guide 3.

Accordingly, when the retainer collar 13 is rotated with respect to the punch guide 3 in the above-described state, the punch head 21 is rotated relative to the punch body 9 via the spring collar 15 and the locking pin 27. That is, the punch body 9 and the punch head 21
Is adjusted. That is, the punch body 9 can be adjusted up and down relatively with respect to the punch head 21, and height adjustment can be performed. At this time, since the biasing force of the stripper spring 23 is received by the step portion 15A of the spring collar 15, the punch head 21 can be rotated slightly with respect to the punch body 9 without being affected by the biasing force. You can do it.

After the punch head 21 is rotated and adjusted as described above, when the push button 29 is released, the push button 29 is moved outward by the urging force of the elastic member 31, and the upper end of the stopper pin 33 is separated. Engagement recess 39 of
To a state where the relative rotation of the retainer collar 13 is prevented.

That is, according to the above configuration, the height adjustment (adjustment of the dimension from the upper surface of the punch head to the punch blade portion 7 of the punch body 9) can be performed without using a tool. There is no need to operate the spring collar 15 vertically,
The structure is relatively simple and the operation is easy.

Similar to the conventional punch body, the punch body 9 is provided with a key 41 engaged with a key groove formed in the punch guide 3 and a striker 43 capable of pressing the punch head 21 with pressure. Is formed with a fluid hole 45 communicating with a fluid hole (not shown). The fluid hole 45 serves to guide a fluid such as an oil mist supplied from the striker 43 to the lower end of the punch guide 3 and to eject the fluid from around the punch blade 7.

At the lower end of the punch guide 3, a cylindrical stripper holder 47 for detachably supporting the stripper plate 5 in a horizontal direction (a direction perpendicular to the axis of the punch guide) is movable vertically. It is installed. In order to move the stripper holder 47 up and down, guide holes 51 engaged with a plurality of guide pins 49 projecting horizontally from the lower end of the punch guide 3 are formed at a plurality of positions of the stripper holder 47. . As shown in FIG. 4, the guide hole 51 has a configuration in which a horizontal upper hole 51A and a lower hole 51B are connected by an inclined portion.

Therefore, the lower hole 5 of the guide hole 51
When the guide pin 49 is engaged with the punch guide 1B, the stripper holder 47 is in an elevated state with respect to the punch guide 3, and the stripper holder 47 is relatively rotated so that the guide pin 49 is engaged with the upper hole 51A. When moved, the stripper holder 47 is lowered relative to the punch guide 3.

In order to attach and detach the stripper plate 5 to and from the stripper holder 47 in the horizontal direction, the stripper holder 47 is provided with a ridge 53 which is detachable from a circumferential groove 5G formed on the peripheral surface of the stripper plate 5. A notch 55 provided on the inner peripheral surface and substantially equal to the outer diameter of the stripper plate 5 is formed horizontally as shown in FIG.

To keep the directionality of the stripper holder 47 and the directionality of the stripper plate 5 always equal, the positioning pins 57 are attached to the stripper holder 47.
The stripper plate 5 is provided with an engaging recess 59 which is detachable from the positioning pin 57 in the attaching / detaching direction. To maintain airtightness between the lower end of the punch guide 3 and the stripper plate 5, a seal member 6 such as an O-ring is provided at the lower end of the punch guide 3.
1 is provided.

In order to keep the stripper holder 47 in a predetermined positional relationship with the punch guide 3, the punch guide 3 has a plurality of recesses formed in the stripper holder 47 and removable balls. Plunger 63
(See FIG. 3).

In the above construction, the punch body 9 is moved up by the action of the stripper spring 23 so that the flange portion 21F of the punch head 21 abuts the step 15A of the spring collar 15, and the punch blade portion of the punch body 9 7 is in a state of being removed upward from the stripper plate 5 (FIG. 1 shows a state in which it is lowered most by the striker 43), a guide pin is inserted into the upper hole 51A in the guide hole 51 of the stripper holder 47. When the stripper holder 47 is rotated so as to be engaged with the punch guide 3, the stripper holder 47 is
Falls relatively.

In this state, the stripper plate 5 is attached to and detached from the stripper holder 47 via the notch 55 in the horizontal direction. When the stripper holder 47 is rotated so that the guide pins 49 are engaged with the lower holes 51B in a state where the stripper plate 5 is mounted on the stripper holder 47, the stripper holder 47 is raised relatively to the punch holder 3, The stripper plate 5 presses the seal member 61 and is brought into close contact with the lower end of the punch guide 3.

Therefore, the airtightness is maintained without generating a minute gap between the lower end portion of the punch guide 3 and the stripper plate 5, and abnormal noise due to slight backlash or the like during punching is maintained. This does not occur.

As described above, when the stripper holder 47 is raised and lowered relatively to the punch guide 3, the fixed state of the stripper holder 47 is maintained by the urging force of the ball bunger 63, and the raised position and the lowered It is held in position and does not move easily.

[0030]

As will be understood from the above description, according to the present invention, the height can be easily adjusted by a relatively simple structure and a simple operation. Further, even in a configuration in which the stripper plate is attached to and detached from the punch guide in the horizontal direction, the stripper plate can be kept airtight so that a small gap does not occur between the punch guide and the stripper plate. Can be prevented from escaping to the surroundings, and abnormal noise can be prevented from being generated at the time of processing, and the conventional problems as described above can be solved.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a mold apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional explanatory view of a main part of a mold apparatus according to one embodiment of the present invention.

FIG. 3 is an explanatory sectional view showing a structure for attaching a stripper holder to a punch guide.

FIG. 4 is an explanatory side view showing a structure for attaching a stripper holder to a punch guide.

FIG. 5 is an explanatory bottom view showing a structure for attaching a stripper holder to a punch guide.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die apparatus 3 Punch guide 5 Stripper plate 7 Punch blade part 9 Punch body 13 Retainer color 15 Spring collar 21 Punch head 29 Push button 33 Stopper pin 47 Stripper holder 49 Guide pin 51 Guide hole 53 Convex part 55 Notch 61 Seal Element

Claims (3)

[Claims] 1. A mold apparatus comprising a punch guide in which a punch body is inserted and supported so as to be vertically movable, and a stripper plate is detachably mounted on a lower end of the punch guide. Wherein the stripper holder supported by the stripper holder is vertically movable, and when the stripper holder is raised, the stripper plate supported by the stripper holder is in close contact with the lower end of the punch guide. Mold device. 2. The mold device according to claim 1, wherein a seal member is provided at a lower end of the punch guide for airtightly maintaining a space between the punch guide and the stripper plate. Mold equipment. 3. A punch head having a retainer collar provided on an upper portion of a punch guide in which a punch body is mounted so as to be movable up and down, and a punch head and a retainer provided only up and down within a spring collar provided integrally with the retainer collar. Between the collar and the collar, an urging means for urging the punch head upward is provided, and an upward / downward restricting portion capable of restricting the upward movement of the punch head is provided on the spring collar. The upper end portion of the punch body is screwed so as to be vertically adjustable relatively, and the retainer collar is rotatable with respect to the punch guide to rotate the punch head relative to the punch body. A mold device provided so as to be freely fixed.