JP2004141922A - Upper die for punch press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an upper die for punch presses with which the height of a punching head is adjusted with one hand even in the state where it is mounted to a punch press. <P>SOLUTION: In an upper die for punch presses which is provided with the punching head freely vertically adjustably in the upper part of a punch driver, the punching head 31 is provided integrally on the punch driver 21 by screwing it vertically movably to a screwing member 25, a locking piece 37 which is freely locked in and separated from locking grooves 29 formed at proper intervals on the outer periphery of the screwing member 25 is provided on the punching head 31, a locking means for holding the locking piece 37 in the fixed state where it is engaged with a locking groove 29 is provided on the punching head 31, the screwing member 25 and the punching head 31 are united and mounted attachably and detachably to the punch driver 21 in the state where they are united. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an upper die for a punch press used by being attached to a punch press such as a turret punch press, for example. More specifically, the height position of a punch head provided on the upper die is freely adjustable ( The present invention relates to an upper die for a punch press, wherein the upper die can be easily moved by one-handed operation in a state where the upper die is mounted on a punch press.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a configuration for adjusting a height position of a punch head in a molding die used by being mounted on a punch press, a shim is interposed between an upper surface of a punch driver (punch body) and a punch head in an upper die. A configuration was employed. In the above-described configuration, it is troublesome to arrange shims having a thickness necessary for adjustment, and since the configuration is such that the punch head is removed from the punch driver and then the shim is interposed, the height adjustment work is troublesome. was there.
[0003]
Therefore, a configuration has been developed in which the height of the punch head can be freely adjusted with respect to the punch driver by screwing the punch head on the upper portion of the punch driver so as to be vertically movable and rotating the punch head (for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent No. 3208104 [0005]
[Problems to be solved by the invention]
As shown in FIG. 4, the upper die in Patent Document 1 is supported by an upper die holder 1 in a punch press (not shown) such as a turret punch press via a lifter spring 3 so as to be vertically movable. The upper die 5 includes a punch driver 9 having a press working portion 7 at a lower portion for pressing (for example, forming) a work in cooperation with a lower die (not shown). A punch head 11 is screwed on the upper part of the punch driver 9 so that the vertical position can be adjusted.
[0006]
After adjusting the height position of the punch head 11 with respect to the punch driver 9, a locking groove 13 is appropriately formed in a circumferential direction on an outer peripheral surface of a lower end portion of the punch head 11 in order to fix the punch head 11. Locking pieces 15 are formed at intervals and can be freely engaged with the locking grooves 13 at the leading ends thereof. The lock piece 15 is constantly urged toward the locking groove 13 by an elastic member 17 such as a coil spring. In order to release the engagement between the locking groove 13 and the lock piece 15 against the urging force of the elastic member 17, the lock piece 15 has a bolt 19 whose head projects outside the punch driver 9. Is screwed.
[0007]
According to the above configuration, when the engagement between the locking groove 13 and the lock piece 15 is released by operating the bolt 19, the punch head 11 is rotated with respect to the punch driver 9 to rotate the punch driver 11. 9, the height position of the punch head 11 is adjusted.
[0008]
Thereafter, by holding the lock piece 15 and the locking groove 13 in an engaged state by the urging force of the elastic member 17, the punch head 11 is held in a state locked by the punch driver 9.
[0009]
In the above configuration, the height position of the punch head with respect to the punch driver can be easily adjusted, as compared with the configuration in which a shim is interposed between the punch head and the punch driver. When adjusting, there is a problem that it is necessary to operate the bolt 19 with one hand and rotate the punch head 11 with the other hand.
[0010]
Further, the engagement between the locking groove 13 and the lock piece 15 may be released by adjusting the height of the punch head 11, and further improvement is desired.
[0011]
[Means for Solving the Problems]
The present invention has been made in view of the conventional problems as described above, and the invention according to claim 1 is directed to an upper die for a punch press having a configuration in which a punch head is provided on a punch driver so as to be vertically adjustable. A punch head is screwably and vertically movably provided on a screw member integrally provided with the punch driver, and a lock piece detachably engageable with a locking groove formed at an appropriate interval on an outer peripheral surface of the screw member. The punch head is provided with a locking means for holding the lock piece in a fixed state in which the locking piece is engaged with the locking groove.
[0012]
According to a second aspect of the present invention, in the upper die for a punch press according to the first aspect, the screw member and the punch head are unitized, and the unit is detachably attached to the punch driver in this unitized state. Configuration.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, components having the same functions as those of the above-described conventional configuration will be denoted by the same reference numerals, and redundant description will be omitted.
[0014]
Referring to FIG. 1, an upper surface of a punch driver 21 (corresponding to the above-described punch driver 9) which has a press working portion (not shown) on a lower side and is supported by an upper die holder in a punch press so as to be vertically movable. , A screw member 25 is detachably attached via a fixture 23 such as a bolt. The screw member 25 may be detachably attached to the punch driver 21 by directly screwing the screw member 25 to the punch driver 21.
[0015]
On the outer peripheral surface of the screw member 25, a male screw portion 27 is formed, and a plurality of locking grooves 29 parallel to the axis are formed at appropriate intervals in the circumferential direction. Although the locking groove 29 is formed on the outer peripheral surface of the upper end of the screw member 25 in FIG. 1, the locking groove 29 may be formed over the entire length of the screw member 25. The length of the stop groove 29 can be a desired length.
[0016]
That is, the length of the locking groove 29 can be formed sufficiently longer than the height adjustment range of the punch head 31. In addition, as shown in FIG. 1, the locking groove 29 is a groove having a circular cross section, so that it can be easily processed by cutting such as milling.
[0017]
The male screw part 27 of the screw member 25 is screwed with a female screw part 33 formed on the inner peripheral surface of the punch head 31 so that the vertical position can be adjusted. The punch head 31 has an insertion hole 35 formed at the upper center thereof through which a tool (not shown) for rotating the fixing tool 23 can be inserted. A piece 37 is provided.
[0018]
More specifically, a radial (radial) through hole 39 is formed in the punch head 31, and the lock piece 37, such as a ball or a pin, is movably fitted into the through hole 39. It is. The punch head 31 is provided with a lock means for holding the lock piece 37 in a fixed state in which the lock piece 37 is engaged with the locking groove 29.
[0019]
That is, the punch head 31 is formed with an intersecting hole 41 in a direction intersecting with the through hole 39, in this embodiment, in a direction orthogonal to the through hole 39. A large-diameter lock piece pressing portion (large-diameter portion) 43 for moving the lock piece in the direction of the locking groove 29 and holding the lock piece in a fixed state, and allowing the lock piece 37 to be detached from the locking groove 29. A sliding member 47 having a small-diameter lock piece receiving portion (small-diameter portion) 45 for fitting is movably fitted.
[0020]
The sliding member 47 is constantly urged in a direction to come out by an elastic member 49 such as a coil spring mounted between the bottom of the cross hole 41 and the sliding member 47. The lock piece pressing portion 43 is in contact with the pipe-shaped stopper 51 screwed and fixed to the entrance of the cross hole 41 so that the lock piece 37 is engaged with the locking groove 29. The tip 47E of the sliding member 47 projects into a recess 53 formed in a step shape on the upper surface of the punch head 31.
[0021]
With the above configuration, the lock piece 37 is fixed in a state where it is engaged with the locking groove 29 by the large-diameter pressing portion 43 of the sliding member 47 in the normal state, and the punch head 31 rotates with respect to the screw member 25. It is held in an impossible fixed state.
[0022]
In order to adjust the height position (up-down position) of the punch head 31 with respect to the screw member 25, the tip 47E of the sliding member 47 is pushed downward with one hand, for example, an index finger, and the sliding member 47 is pressed. When the small-diameter lock piece receiving portion 45 corresponds to the lock piece 37, the lock piece 37 moves to the lock piece receiving portion 45 side and separates from the locking groove 29, so that the punch head 31 is rotated with one hand. By doing so, the position of the punch head 31 with respect to the screw member 25 can be adjusted vertically.
[0023]
The rotation amount (rotation angle) of the punch head 31 is read by a scale 55 provided on the punch head 31, and after the punch head 31 is rotated by a desired angle, the pressing of the sliding member 47 is released. The sliding member 47 is moved by the force, and the locking piece 43 is moved in the direction of the locking groove 29 by the large-diameter pressing portion 43 of the sliding member 47, and is held in a state of being engaged with the locking groove 29. .
[0024]
As can be understood from the above description, in the above configuration, the punch head 31 as the rotating side is located outside the screw member 25 as the fixed side, and the punching groove 31 formed in the screw member 25 The punch head 31 has a configuration in which the punch head 31 is provided with a lock piece 37 that can be freely engaged and disengaged and a sliding member 47 for operating the lock piece 37 to engage and disengage. It can be operated dynamically.
[0025]
Therefore, even when the upper die is mounted on the upper die holder of the punch press and the upper space of the upper die holder is relatively narrow, the punch head is mounted with the upper die mounted on the upper die holder. It is possible to easily perform the rotation operation of the motor 31 and to solve the conventional problem as described above.
[0026]
FIG. 2 shows a second embodiment, in which components having the same functions as those of the above-described first embodiment are denoted by the same reference numerals, and redundant description is omitted.
[0027]
In the above-described first embodiment, the configuration in which the distal end portion 47E of the sliding member 47 protrudes above the punch head 31 has been described. In the second embodiment, however, the distal end portion 47E is connected to the punch head 31. 31 shows a configuration protruding below the lower part of FIG. In this configuration, the only difference is that the tip 47E of the sliding member 47 is pressed upward with the thumb, and the punch head 31 can be rotated with one hand as described above. .
[0028]
FIG. 3 shows a third embodiment, in which components having the same functions as those of the above-described embodiment are denoted by the same reference numerals, and redundant description will be omitted.
[0029]
In the third embodiment, the cross holes 41 are provided horizontally, and the same effects as in the above-described embodiment can be obtained.
[0030]
As already understood, the cross holes 41 into which the sliding members 47 are fitted can be provided not only in the vertical and horizontal directions but also in the oblique vertical direction in some cases.
[0031]
【The invention's effect】
As understood from the above description, according to the present invention, the locking state of the lock piece is provided by providing the lock piece and the sliding member for operating the lock piece on the punch head that is rotated. The release and the rotation of the punch head can be performed with one hand, and the conventional problem as described above can be solved.
[Brief description of the drawings]
FIG. 1 is an explanatory cross-sectional view showing a punch head configuration of an upper die for a punch press according to a first embodiment of the present invention.
FIG. 2 is a sectional explanatory view showing a punch head configuration of an upper die for a punch press according to a second embodiment of the present invention.
FIG. 3 is an explanatory sectional view showing a punch head configuration of an upper die for a punch press according to a third embodiment of the present invention.
FIG. 4 is an explanatory sectional view showing a configuration of a prior art example.
[Explanation of symbols]
1 Upper die holder 5 Upper die 7 Press working part 9, 21 Punch driver 11, 31 Punch head 13, 29 Locking groove 15, 37 Lock piece 25 Screw member 27 Male screw part 33 Female screw part 35 Insertion hole 39 Through hole 41 Intersecting hole 43 Lock piece holding part (large diameter part)
45 Lock piece receiving part (small diameter part)
47 sliding member 49 elastic member 53 recess

Claims (2)

In an upper die for punch press having a configuration in which a punch head is vertically adjustable on an upper portion of a punch driver, a punch member is provided by being screwed up and down to a screw member integrally provided with the punch driver, Lock means for equipping the punch head with lock pieces that can be disengaged from and engaged with locking grooves formed at appropriate intervals on the outer peripheral surface of the screw member, and that hold the lock pieces in a fixed state engaged with the locking grooves. An upper die for a punch press, comprising: 2. The punch press according to claim 1, wherein the screw member and the punch head are unitized, and the unit is detachably attached to the punch driver in the unitized state. For upper mold.

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