JP2009233752A - Die device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a die device which can easily perform height adjustment by a simple operation. <P>SOLUTION: A retainer collar 13 is provided to the upper part of a punch guide 3 vertically movably incorporating a punch body 9, an energizing means 23 energizing the punch head 21 in the upper direction is provided between a punch head 21 provided only vertically movably inside a spring collar 15 provided integrally with the retainer collar 13 and the retainer collar 13, further, an elevation regulating part 15A freely regulating the movement of the punch head 21 in the upper direction is provided to the spring collar 15, the punch head 21 and the upper edge part of the punch body 9 are screwed so as to be relatively vertically adjustable, and the retainer collar 13 is provided to the punch guide 3 turnably and also in a freely fixable manner for relatively rotating the punch head 21 to the punch body 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mold apparatus that is used by being mounted on a punch press such as a turret punch press, and more specifically, a stripper plate is provided at the lower end portion of a punch guide in which a punch body is inserted and supported in a vertically movable manner. The present invention relates to a mold apparatus that is detachable, and relates to a mold apparatus that does not have a slight backlash between the punch guide and the stripper plate, and to a mold apparatus that can easily perform height adjustment without using a tool. .

  For example, 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 is placed in a cylindrical punch guide supported by the punch holder so as to be movable up and down. A punch body provided with a punch blade at the lower end is inserted and supported so as to be movable up and down, and a powerful is provided between a retainer collar mounted on the upper part of the punch guide and a punch head screwed onto the upper end of the punch body. The stripper spring is elastic. And it is the structure provided with the stripper plate which formed the hole of the shape corresponding to the cross-sectional shape of the said punch blade part in the lower end part of a punch guide.

  In the configuration in which the stripper plate is detachably attached to the lower end portion of the punch guide, it is fitted to the punch guide from below, and the lateral direction formed on the lower end portion of the punch guide (on the axis of the punch guide). There is a type in which the stripper plate is attached to and detached from the lateral direction with respect to the guide portion in a direction perpendicular to the guide portion.

  In the type in which the stripper plate is fitted to and detached from the punch guide from below, the stripper plate and the punch guide are relatively tightly fitted and closely contacted so that there is no slight gap in the vertical direction. So it is desirable.

  However, in the type in which the stripper plate is attached to and detached from the lateral guide portion formed at the lower end of the punch guide from the lateral direction, there is a minute vertical gap between the punch guide and the stripper plate. An abnormal noise due to the presence of the minute gap is generated during the vertical movement of the punch and fluid such as oil mist is drawn 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 trying to eject, there is a problem that the fluid easily escapes from a minute gap between the punch guide and the stripper plate, and the fluid may not be ejected effectively.

  By the way, as a punch mold capable of performing height adjustment, a mold capable of performing height adjustment without being influenced by the urging force of the stripper spring has been developed. As a prior example, for example, Japanese Patent Laid-Open No. 10-244327 is disclosed. There is a gazette. In this prior example, the punch head is embedded in a spring collar with a stripper spring, and it is necessary to make the punch head protrude greatly from the spring collar when adjusting the height. In addition, there is a problem that the overall configuration is relatively complicated.

  The present invention has been made in view of the above-described problems. A retainer collar is 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 can be moved up and down in a spring collar provided integrally with the retainer collar. A lifting means for biasing the punch head upward is provided between the punch head provided only on the retainer and the retainer collar, and an upward / downward restricting portion capable of restricting upward movement of the punch head is provided. The retainer for rotating the punch head relative to the punch body provided on the spring collar and screwed so that the punch head and the upper end of the punch body can be adjusted relative to each other. The collar is configured to be rotatable and fixed to the punch guide.

  Further, a retainer collar (13) is detachably and rotatably provided on an upper portion of a punch guide (3) in which a punch body (9) having a punch blade portion (7) at the lower end is inserted and supported so as to be movable up and down. The punch head (21) is provided with a stripper spring (23) mounted between a punch head (21) screwed to the upper end of the punch body (9) so as to be vertically adjustable and the retainer collar (13). A lower end portion of a spring collar (15) for restricting the upward movement is fixed to the retainer collar (13), and the punch head (21) and the spring collar (15) are relatively arranged. A push button that is provided so as to be movable in the radial direction in order to regulate rotation and adjust height by adjusting the screwing relationship between the punch body (9) and the punch head (21). 29) The radial movement of 29) is characterized in that the retainer collar (13) is relatively rotatable with respect to the punch guide (3) or is in a fixed state in which rotation is prevented. It is.

  According to the present invention, height adjustment can be easily performed with a simple operation and a simple operation.

It is a section explanatory view of a metallic mold device concerning one embodiment of the present invention. It is expansion sectional explanatory drawing of the principal part of the metal mold | die apparatus which concerns on one embodiment of this invention. It is sectional explanatory drawing which shows the attachment structure of the stripper holder with respect to a punch guide. It is side surface explanatory drawing which shows the attachment structure of the stripper holder with respect to a punch guide. It is bottom surface explanatory drawing which shows the attachment structure of the stripper holder with respect to a punch guide.

  Referring to FIG. 1, in a mold apparatus 1 according to an embodiment of the present invention, a punch head is struck by a striker and is in a state of being lowered. The mold apparatus 1 includes a cylindrical punch guide 3 supported by a punch holder (not shown) such as an upper turret in a turret punch press so as to be movable up and down. A punch body 9 having a punch blade portion 7 is fitted and supported in a vertically movable manner at a lower end portion that penetrates a stripper plate 5 provided at a lower end portion of the punch guide 3.

  A retainer collar 13 is detachably and rotatably attached to the upper portion of the punch guide 3 via a stopper 11 such as an O-ring, for example, and a lower end portion of a cylindrical spring collar 15 is fixed to the retainer collar 13. It is fitted and fixed via a tool 17. The spring collar 15 and the retainer collar 13 are fixed integrally via a pin 19 and the like so as not to rotate relatively.

  A punch head 21 is screwed to an upper end portion of the punch body 9 extending vertically through the retainer collar 13 so as to be movable up and down, and the punch head 21 and the retainer collar 13 are screwed up and down. Between them, a powerful stripper spring 23 is mounted. The punch head 21 is provided with a locking pin 27 that engages with a vertically elongated hole 25 provided in the spring collar 15 so as to be movable up and down. Rotation is regulated.

  In order to restrict the upward movement of the punch head 21 by the urging force of the stripper spring 23 as the urging means, an annular step portion 15A as an elevation regulating portion is formed on the inner peripheral surface of the upper end portion of the spring collar 15. It is. The rise is restricted by the flange portion 21F provided in the punch head 21 coming into contact with the step portion 15A.

  In order to adjust the height of the punch body 9 by adjusting the screwing relationship between the punch body 9 and the punch head 21, a push button is provided on the flange 3F provided at the upper end of the punch guide 3, as shown in FIG. 29 is movably provided in the radial direction (left and right direction in FIG. 2). The push button 29 is pressed and urged outward by an elastic member 31 such as an elastic coil spring. The lower end portion of the stopper pin 33 penetrating the push button 29 up and down forms a diameter formed on the punch guide 3. By being engaged with the directional groove 35, it does not come out.

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

  In the above configuration, when the flange portion 21F of the punch head 21 is in contact with the step portion 15A of the spring collar 15, the push button 29 is pressed inward against the biasing force of the elastic member 31, and the stopper When the upper end portion of the pin 33 is separated from the engagement recess 39 and positioned at the inner circumferential groove 37, the retainer collar 13 can be rotated relative to the punch guide 3.

  Therefore, when the retainer collar 13 is rotated with respect to the punch guide 3 in the state as described above, the punch head 21 is rotated relative to the punch body 9 via the spring collar 15 and the locking pin 27. The screwed state between the punch body 9 and the punch head 21 is adjusted. That is, the punch body 9 can be adjusted up and down relative to the punch head 21, and the height adjustment can be performed. At this time, since the urging 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 lightly with respect to the punch body 9 without being affected by the urging force. It can be done.

  After the rotation adjustment of the punch head 21 as described above, when the pressing of 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 portion of the stopper pin 33 is separately engaged. Engage with the recess 39 to prevent relative rotation of the retainer collar 13.

  That is, with the above configuration, height adjustment (adjustment of the dimension from the upper surface of the punch head to the punch blade portion 7 in the punch body 9) can be performed without using a tool, as well as the punch head 21 or the spring collar 15. Is not required to be operated in the vertical direction, and its configuration is relatively simple and easy to operate.

  Like 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 the punch head 21 is formed in a striker 43 that can be pressed freely. A fluid hole 45 communicating with a fluid hole (not shown) is formed. The fluid hole 45 serves to guide fluid such as oil mist supplied from the striker 43 to the lower end portion of the punch guide 3 and eject the fluid from the periphery of the punch blade portion 7.

  A cylindrical stripper holder 47 that detachably supports the stripper plate 5 in a lateral direction (a direction perpendicular to the axis of the punch guide) is attached to a lower end portion of the punch guide 3 so as to be movable up and down. Yes. In order to move the stripper holder 47 up and down, guide holes 51 engaged with a plurality of guide pins 49 projecting horizontally at the lower end of the punch guide 3 are formed at a plurality of locations 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, when the guide pin 49 is engaged with the lower hole 51B of the guide hole 51, the stripper holder 47 is raised with respect to the punch guide 3, and the guide pin 49 is engaged with the upper hole 51A. When the stripper holder 47 is relatively rotated, the stripper holder 47 is lowered relative to the punch guide 3.

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

  In order to keep the directionality of the stripper holder 47 and the directionality of the stripper plate 5 always equal, the stripper holder 47 is provided with positioning pins 57, and the stripper plate 5 is attached to the positioning pins 57 in the attaching / detaching direction. An engaging recess 59 that can be freely engaged and disengaged is formed. In order to maintain the airtightness between the lower end portion of the punch guide 3 and the stripper plate 5, a seal member 61 such as an O-ring is provided at the lower end portion of the punch guide 3.

  It should be noted that the punch guide 3 has a ball plunger 63 (which is detachably engageable with a plurality of recesses formed in the stripper holder 47 so that the stripper holder 47 maintains a predetermined positional relationship with the punch guide 3. 3) is provided.

  In the configuration as described above, the punch body 9 is lifted up by the action of the stripper spring 23, the flange portion 21F of the punch head 21 contacts the stepped portion 15A of the spring collar 15, and the punch blade portion 7 of the punch body 9 is stripper. When the plate 5 is pulled upward from the plate 5 (FIG. 1 shows a state where it is lowered by the striker 43), the guide pin 49 is engaged with the upper hole 51A of the guide hole 51 of the stripper holder 47. When the stripper holder 47 is rotated so as to match, the stripper holder 47 descends relative to the punch guide 3.

  In this state, the stripper plate 5 is attached to and detached from the stripper holder 47 through the notch 55 in the horizontal direction. When the stripper holder 47 is rotated so that the guide pin 49 engages with the lower hole 51B in a state in which the stripper plate 5 is mounted on the stripper holder 47, the stripper holder 47 is raised relative to the punch holder 3, The stripper plate 5 presses the seal member 61 and is brought into close contact with the lower end portion of the punch guide 3.

  Accordingly, 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 caused by slight backlash or the like is generated during punching. There is nothing to do.

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

DESCRIPTION OF SYMBOLS 1 Mold apparatus 3 Punch guide 5 Stripper plate 7 Punch blade part 9 Punch body 13 Retainer collar 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 part 61 Seal Element

Claims (2)

  A retainer collar is provided on the upper part of the punch guide with the punch body mounted in a vertically movable manner. Between the retainer collar and the punch head provided only in a vertically movable manner within a spring collar provided integrally with the retainer collar. And a biasing means for urging the punch head upward, and an elevating / lowering restricting portion capable of regulating upward movement of the punch head is provided in the spring collar, and upper ends of the punch head and the punch body are provided. The retainer collar is rotatably and fixedly provided on the punch guide for rotating the punch head relative to the punch body. A mold apparatus characterized by that.   A retainer collar (13) is detachably and rotatably provided on an upper portion of a punch guide (3) in which a punch body (9) having a punch blade portion (7) at its lower end is inserted and supported so as to be movable up and down. A stripper spring (23) is mounted between the punch head (21) screwed to the upper end of (9) so as to be vertically adjustable, and the retainer collar (13), and the top of the punch head (21) is provided. A lower end of a spring collar (15) for restricting movement in the direction is fixed to the retainer collar (13), and relative rotation between the punch head (21) and the spring collar (15) is performed. In order to adjust the height by adjusting the screwing relationship between the punch body (9) and the punch head (21), a push button (29 provided movably in the radial direction) is provided. A mold apparatus having a structure in which the retainer collar (13) can be rotated relative to the punch guide (3) or can be prevented from rotating by moving in the radial direction of the punch guide (3). .

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