JP4892246B2 - Upper mold device and punch - Google Patents

Description

  The present invention relates to an upper mold apparatus used in a punch press such as a turret punch press and a punch used in the upper mold apparatus, and more specifically, an upper mold apparatus capable of easily performing height adjustment. About.

  2. Description of the Related Art Conventionally, in an upper die device that is used by being mounted on a punch press, when the punch blade portion of the upper die device is worn, the punch blade portion is re-polished. As described above, when the punch blade portion is re-polished, the overall length of the punch is shortened, so that height adjustment is performed (for example, see Patent Document 1).

  The configuration of the upper mold device described in Patent Document 1 is as shown in FIG.

  That is, the conventional upper mold apparatus includes a cylindrical punch guide 101, and a punch body 105 having a punch blade 103 at the lower end is fitted in the punch guide 101 so as to be movable up and down. In order to restrict the rotation of the punch body 105 with respect to the punch guide 101, a key 109 provided in the punch body 105 is slidably engaged with a vertical key groove 107 formed in the punch guide 101. It is.

  A cylindrical spring collar 111 is detachably attached to the upper portion of the punch guide 101 via a pin 113, and a lock member 115 is screwed and fixed to the upper portion of the spring collar 111. A punch head 117 is supported on the lock member 115 so as to be movable up and down. A screw portion formed on the upper end portion of the punch body 105 is adjusted to a vertical position on the female screw portion formed on the punch head 117. They are screwed together. A stripper spring 121 is mounted between the annular spring seat 119 that can freely come into contact with the lower end of the punch head 117 and the bottom of the spring collar 111.

  In order to restrict the rotation of the punch head 117 relative to the lock member 115, vertical grooves 123 are formed at equal intervals in the circumferential direction at a plurality of locations on the outer peripheral surface of the punch head 117. A lock piece 127 of the lock means 125 provided in the lock member 115 is provided in the groove 123 so as to be disengageable. Since the configuration of the locking means 125 is known, detailed description thereof is omitted.

  In the above configuration, when the lock piece 127 is engaged with the groove 123 of the punch head 117, the rotation of the punch head 117 with respect to the lock means 125 is in a restricted state. Accordingly, when the punch head 117 is struck by a vertically movable striker (not shown) provided in the punch press, the punch head 117 and the punch body 105 are lowered against the urging force of the stripper spring 121, and the die (not shown) ) The upper workpiece is punched.

When the punch head 117 is rotated in a state in which the engagement between the groove 123 of the punch head 117 and the lock piece 127 is released, the rotation of the punch body 105 is regulated by the key 109. To get. As described above, the punch head 117 is rotated to release the upper end portion of the punch body 105 and the punch head 117 from being screwed, whereby the punch body 105 can be extracted downward from the punch guide 101. The blade 103 can be re-polished.
JP 2001-105053 A

  In the conventional configuration as described above, when the punch blade 103 is worn, the punch body 105 can be attached to and detached from the mold apparatus (upper mold apparatus) without using a tool, and re-polishing can be performed. , Height adjustment can be performed.

  However, in the above configuration, when the punch head 117 is rotated with respect to the punch body 105, the rotation of the punch body 105 is restricted in the configuration in which the key 109 provided in the punch body 105 is engaged with the key groove 107 of the punch guide 101. Therefore, for example, even if the punch blade portion 103 is circular and the punch body 105 is allowed to rotate, it requires a key and a key groove, In order to simplify the configuration, further improvements have been demanded.

  In the conventional configuration, the punch body is inserted into the punch guide from the lower side and the upper end of the punch body is screwed into the punch head. When the punch body is adjusted up and down, it is difficult to measure the dimension from the upper surface of the punch head to the punch blade part.

The present invention has been made in view of the above-described problems, and a retainer collar is provided on the upper portion of a punch guide (3) in which a punch body (13) having a punch blade portion (9) at its lower end portion is movably fitted. (21) A detachable punch head having a female screw portion (17) that is adjustably screwed with a screw portion (17) formed at the tip of a punch driver (15) provided in the punch body (13). 27) a stripper provided with a spring seat (33) capable of moving up and down relatively without rotation, and an elastic member (43) mounted between the punch head (27) and the spring seat (33). Provided with a unit (25), capable of restricting relative rotation of the punch body (13) with respect to the retainer collar (21), and in the stripper unit (25) Pulling seat (33), it is characterized in that are mounted for relative rotation fixed on the retainer collar (21).

Further, in the upper mold apparatus, a groove-shaped locking portion formed on the outer peripheral surface of the punch driver (15) in order to restrict relative rotation of the punch body (13) with respect to the retainer collar (21). (19) is characterized in that a locking piece (55) whose tip is engageable and disengageable is provided on the retainer collar (21) so as to be movable in the radial direction and urged inward. is there.

In the upper mold apparatus, the retainer collar (21) and the spring seat (33) are mounted on the upper surface of the retainer collar (21) or the spring seat (33) so as to be relatively rotatably fixed. A circumferential groove (45) provided with a plurality of engagement recesses (47) at equal intervals in the circumferential direction is provided on the lower surface, and the engagement is provided on the lower surface of the spring seat (33) or the upper surface of the retainer collar (21). A slider (51) having a lock piece (49) that can be engaged with the recess (47) and movable to the position of the circumferential groove (45) is provided to be movable in the radial direction, and the engagement recess (47). The slider (51) is biased in the radial direction so as to keep the lock piece (49) engaged.

In the upper mold apparatus, the punch guide (3) has no key groove, and the punch body (13) has no key to be engaged with the key groove.

Further, the punch used in the upper die device is a punch driver (15) having a diameter smaller than the diameter of the punch body (13). The punch driver (15) is provided with a screw portion (17) that is adjustably screwed with a female screw portion provided in the punch head (27) in the upper die device. In the vicinity of the base portion of the punching device (15), there is provided a groove-like locking portion in which the distal end portion of the locking piece (55) provided to the retainer collar (21) in the upper die device so as to be movable in the radial direction is detachable. ) And the punch body (13) is not provided with a key.

  According to the present invention, a key groove is not required for the punch guide, and a key that engages with the key groove is not required for the punch body, which facilitates processing and simplifies the configuration. . In addition, the punch body can be fitted to the punch guide in a state where the stripper unit, the retainer collar, and the punch body are pre-assembled. Later, the length dimension from the upper surface of the punch head to the punch blade at the tip of the punch body can be accurately measured, and the height of the mold can be adjusted accurately.

  Referring to FIG. 1, an upper die device (die device) 1 according to an embodiment of the present invention includes a cylindrical punch guide 3, and a lower end portion of the punch guide 3 is, for example, an O-ring. A stripper plate 7 is detachably attached via an appropriate locking tool 5 as described above. The stripper plate 7 can be formed integrally with the punch guide 3 in advance.

  In the punch guide 3, a punch 11 having a punch blade portion 9 at the lower end is fitted so as to be movable up and down. The punch 11 has a structure in which the punch blade portion 9 is provided in a lower portion of a large-diameter punch body 13 that is slidably fitted in the punch guide 3. A punch driver 15 having a diameter smaller than 13 is integrally provided. Therefore, the punch driver 15 can be regarded as a part of the punch body 13. A screw portion 17 is formed at the tip of the punch driver 15, and the outer peripheral surface near the base of the punch driver 15 (position close to the punch body 13) is parallel to the axis of the punch driver 15. A groove-shaped locking portion 19 is formed to have an appropriate length.

  The punch body 13 and the punch driver 15 may be configured separately and integrated by a connecting tool such as a bolt. Also in this case, the punch driver 15 can be regarded as a part of the punch body 13 by being integrated.

  A retainer collar 21 is detachably mounted on an upper portion of the punch guide 3 via an appropriate locking member 23 such as an O-ring, and a stripper unit 25 is mounted on the retainer collar 21. . In other words, the retainer collar 21 is provided between the punch guide 3 and the stripper unit 25.

  The stripper unit 25 includes a punch head 27 as an adjustment screw member having a female screw portion that is threadably engaged with the screw portion 17 of the punch body 13. The punch head 27 is formed in a cylindrical shape that is long in the vertical direction, and a flange member 31 is integrally fixed to an upper end portion thereof via a fixture 29 such as a ring member.

  A spring seat 33 is mounted on the lower end side of the punch head 27 so as to be movable up and down without relatively rotating. In the spring seat 33, a long cylindrical portion 35 is fitted to the outer periphery of the lower portion of the punch head 27 so as to be vertically movable, and the punch head is formed in a vertical key groove 37 formed in the cylindrical portion 35. 27 is engaged with a key 39. A retaining ring 41 as a retaining member is fixed to the outer peripheral surface of the lower end of the punch head 27. An appropriate elastic member 43 as a biasing means such as a stripper spring is mounted between the flange member 31 and the spring seat 33.

  The retainer collar 21 provided between the punch guide 3 and the stripper unit 25 can be attached to and detached from the spring seat 33 via an appropriate locking tool 44 such as an O-ring. It is mounted so that it can be fixed. That is, a circumferential groove 45 is formed on the lower surface of the spring seat 33 in contact with the upper surface of the flange portion of the retainer collar 21, and a plurality of radial (radial direction) engagements are formed on the outer circumferential side of the circumferential groove 45. Joint recesses 47 are provided at equal intervals in the circumferential direction.

  The retainer collar 21 is provided with a slider 51 having a pin-like lock piece 49 that can be engaged with the engaging recess 47 and moved to the position of the circumferential groove 45 so as to be movable in the radial direction. ing. In order to maintain the engagement state between the engagement recess 47 and the lock piece 49, the slider 51 is always radially outward by an urging means made of an elastic member 53 such as a coil spring provided in the retainer collar 21. Is being energized.

  Accordingly, in a normal state, the lock piece 49 is held in a state of being engaged with the engagement recess 47 and presses the slider 51 in the radial inward direction against the urging force of the elastic member 53. In this case, the lock piece 49 is detached from the engagement recess 47 and moves to the position of the circumferential groove 45. In the embodiment, the case where the circumferential groove 45 and the engaging recess 47 are formed on the spring seat 33 side and the lock piece 49 is provided on the retainer collar 21 side is illustrated. However, the positions where the circumferential groove 45 and the lock piece 49 are provided are relative, and the circumferential groove 45 and the engagement recess 47 are formed on the retainer collar 21 side, and the lock piece 49 is radially arranged on the spring seat 33 side. It is also possible to adopt a configuration that is movably provided.

  In order to restrict relative rotation (rotation) of the punch body 13 with respect to the retainer collar 21, the retainer collar 21 has a distal end portion (inner end portion) on the engaging portion 19 formed on the punch driver 15. ) Can be moved in the radial direction (radial direction). The locking piece 55 is always urged radially inward by an elastic member 57 such as a coil spring as an example of urging means provided in the retainer collar 21.

  Therefore, in a normal state, the distal end portion of the locking piece 55 is always engaged with the locking portion 19, and the relative rotation of the punch body 13 with respect to the retainer collar 21 is restricted. However, when the operating pin 59 provided on the locking piece 55 is operated to move the locking piece 55 in the radial outward direction against the urging force of the elastic member 57, the locking portion 19 is locked. The tip of the piece 55 is detached, and the punch body 13 can be rotated relative to the retainer collar 21.

  In the configuration as described above, in the state shown in FIG. 1, the retainer collar 21 and the spring seat 33 are relatively unrotatable, and the punch body 13 rotates relative to the retainer collar 21. It is in an immovable state. When the die apparatus 1 in such a state is mounted on a punch press (not shown), and the punch head 27 is struck by a striker that is provided on the punch press so as to be movable up and down as usual, press processing is performed. The punch head 27 and the punch 11 are moved down against the punch guide 3 against the urging force of the elastic member 43, and when the striker is lifted, the punch head 27 and the punch 11 are raised and returned by the urging force of the elastic member 43.

  When the punch blade portion 9 of the punch 11 is worn and needs to be repolished, the retainer collar 21 and the punch body 13 are integrally pulled upward from the punch guide 3 to release the locking by the locking member 23. . Thereafter, the punch 11 is held in a state in which the locking piece 55 is released from the locking portion 19 and is rotated in the direction in which the punch 11 is loosened with respect to the retainer collar 21, the punch head 27, etc. The screw 11 of the punch head and the screw part 17 of the punch 11 can be released and the punch 11 can be removed. Therefore, the regrinding of the punch blade portion 9 can be performed.

  Then, contrary to the above, the screw 11 of the punch 11 and the punch head 27 can be integrated by screwing the screw part 17 of the punch 11 with the screw part of the punch head 27. When the distal end portion of the locking piece 55 is locked to the locking portion 19 of the punch 11 and the retainer collar 21 and the punch 11 are integrated so as not to rotate relatively, the slider 51 is moved inward. And the spring seat 33, that is, the stripper unit 25 is rotated relative to the retainer collar 21 by holding the lock piece 49 from the engagement recess 47 of the circumferential groove 45 as described above. Can move.

  Therefore, the screwing position of the screw portion 17 of the punch 11 with respect to the punch head 27 can be adjusted, and height adjustment can be performed. At this time, when the punch 11 is in the state of being extracted from the punch guide 3, the dimension from the upper surface of the punch head 27 to the punch blade portion 9 can be accurately measured. As already understood, since the height is adjusted by rotating the spring seat 33 relative to the retainer collar 21, the height can be adjusted even when the punch body 13 is fitted in the punch guide 3. Adjustments can be made.

  As understood from the above description, the height adjustment can be performed by rotating the spring seat 33 relative to the retainer collar 21, so that the conventional configuration described above is used. The punch guide 3 does not require a key groove, and a key that engages with the key groove is not necessary. Therefore, the punch guide or the like can be easily processed and the configuration can be simplified.

  Further, since the punch 11 can be attached to and detached from the punch head 27 in a state where the spring seat 33 and the retainer collar 21 are combined in advance, the stripper unit 25 provided with the punch head 27 and the like, the retainer collar 21 and the punch 11 can be combined in advance, and the punch 11 can be easily assembled into the punch head 27.

  By the way, the present invention is not limited to the embodiment described above, and can be implemented in other modes by making appropriate changes. For example, as shown in FIG. 2, it is possible to adopt a configuration in which a large number of the locking portions 19 are provided in the circumferential direction, that is, a configuration such as serration. Further, the lock piece 49 is provided in a vertical slider 51A provided so as to be movable up and down and is always urged upward by an elastic member 53A provided in the retainer collar 21. The engaging recess 47A, in which the lock piece 49 can be freely engaged and disengaged, can also be constituted by a plurality of holes formed at appropriate intervals on the same circle on the lower surface of the spring seat 33.

  Further, as shown in FIG. 3, the operation pin 59 </ b> A provided in the locking piece 55 is configured to protrude into the circumferential groove 45 in the spring seat 33. The engagement recess 47A that can be engaged with the operation pin 59A is formed. In this configuration, when the spring seat 33 is rotated relative to the retainer collar 21, the operation pin 59A can be engaged with the engagement recess 47A when the operation pin 59A corresponds to the engagement recess 47A. It will be.

  Furthermore, the stripper unit 25 may be configured as shown in FIG. That is, in the above-described embodiment, the punch head 27 and the spring seat 33 are connected inside the elastic member 43 (stripper spring), but as shown in FIG. 4, the cylindrical shape surrounding the elastic member 43 is formed. It is also possible to adopt a configuration in which the cover 61 is connected.

  In this case, the lower part of the cover 61 corresponding to the spring seat 33 and the cylindrical portion 35 is integrally fixed by a fixing member 63 made of an appropriate fixing ring member or the like. Then, the upward movement of the punch head 27 is restricted by an inner flange 61F provided inside the upper end of the cover 61, and the pins provided on the punch head 27 are arranged in the vertical slot 61S formed in the cover 61. The engagement piece 65 is engaged so as to be movable up and down, and the relative rotation of the punch head 27 with respect to the cover 61 is restricted. Further, an engagement recess 47 communicating with the circumferential groove 45 formed on the lower surface of the spring seat 33 can be formed on the lower end surface of the cover 61.

  In the above configuration, since the spring seat 33 and the cover 61 are integrated by the fixing member 63, the spring seat 33 and the cover 61 can be regarded as an integrated object. That is, the spring seat 33 and the cover 61 can be configured integrally in advance, but in terms of processing, the spring seat 33 and the cover 61 are processed separately and combined together. It is. The stripper unit 25 is configured such that the spring seat 33 and the cover 61 can be regarded as a single body, and the cover 61 can be regarded as a part of the spring seat 33.

  That is, the configuration of the stripper unit 25 can be implemented in various forms with various modifications.

It is a section explanatory view of a metallic mold device concerning an embodiment of the present invention. It is sectional explanatory drawing of the principal part which shows 2nd Embodiment. It is sectional explanatory drawing of the principal part which shows 3rd Embodiment. It is sectional explanatory drawing of the principal part which shows 4th Embodiment. It is sectional explanatory drawing which shows the structure of the conventional metal mold apparatus.

Explanation of symbols

1 Upper mold equipment (mold equipment)
3 Punch Guide 9 Punch Blade 11 Punch 13 Punch Body 15 Punch Driver 17 Screw 19 Locking 21 Retainer Collar 25 Stripper Unit 27 Punch Head (Adjustment Screw Member)
43 Elastic member 55 Locking piece

Claims (5)

A retainer collar (21) is detachably provided on an upper portion of a punch guide (3) in which a punch body (13) having a punch blade portion (9) at its lower end is movably fitted, and the punch body (13) The spring seat (33) without rotating relatively to the punch head (27) having a female threaded portion that can be screwed with a screw portion (17) formed at the tip of the punch driver (15). And a stripper unit (25) in which an elastic member (43) is mounted between the punch head (27) and a spring seat (33), and the punch for the retainer collar (21) is provided. The relative rotation of the body (13) is provided so as to be restricted, and the spring seat (33) in the stripper unit (25) is attached to the retainer collar (21). Upper die apparatus characterized by are mounted for relative rotation fixed. The upper die apparatus according to claim 1, wherein a groove-like shape formed on an outer peripheral surface of the punch driver (15) for restricting relative rotation of the punch body (13) with respect to the retainer collar (21). The locking portion (19) is provided with a locking piece (55) whose tip can be disengaged from the locking portion (19), which is movable in the radial direction and urged inward in the retainer collar (21). Upper type device to do. The upper mold apparatus according to claim 1 or 2, wherein the retainer collar (21) and the spring seat (33) are mounted on the upper surface of the retainer collar (21) or the spring so as to be rotatably fixed. The lower surface of the seat (33) is provided with a circumferential groove (45) provided with a plurality of engaging recesses (47) at equal intervals in the circumferential direction, and the lower surface of the spring seat (33) or the upper surface of the retainer collar (21). And a slider (51) provided with a locking piece (49) that is engageable with the engaging recess (47) and is movable to the position of the circumferential groove (45). The upper die device is characterized in that the slider (51) is urged in the radial direction so as to keep the mating recess (47) and the lock piece (49) engaged. The upper die apparatus according to claim 1, 2, or 3, wherein the punch guide (3) has no key groove, and the punch body (13) has no key to be engaged with the key groove. The upper mold device. It is a punch used for the upper mold | type apparatus of Claim 1, 2, or 3, Comprising: The punch body (13) provided with the punch blade part (9) in the front-end | tip part is larger than the diameter of the said punch body (13). A small-diameter punch driver (15) is provided, and a screw portion (17) that is adjustably screwed to a female screw portion provided in a punch head (27) in the upper die device is provided at the tip of the punch driver (15). In the vicinity of the base portion of the punch driver (15), a groove-shaped latching device is provided in which a distal end portion of a latching piece (55) provided in the retainer collar (21) in the upper mold device so as to be movable in the radial direction is detachable. The punch is characterized in that the portion is provided in parallel with the axis of the punch driver (15) and the punch body (13) is not provided with a key.

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