JP4322982B2 - Punch mold - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a punch die used in a punch press such as a turret punch press, and more particularly to a punch die capable of easily adjusting a punch height.
[0002]
[Prior art]
A striker of a punch press such as a turret punch press has a type in which the upper surface of the punch head of the punch die is simply pressed, and a T groove that can be freely engaged with and disengaged from the T-shaped portion of the punch head provided in the punch die. There are different forms.
[0003]
The punch mold of the type in which the upper surface of the punch head is struck by a striker is configured with a powerful stripper spring to raise the punch body, and under normal conditions the striker and punch head are separated. Even if the height positions of the punch heads are slightly different, there is no serious problem, and the height adjustment is easy.
[0004]
In the type in which the T-shaped portion of the punch head in the punch die is engaged and disengaged with the T groove provided in the striker, when the turret in the turret punch press rotates horizontally, for example, the striker located at the top dead center Since the T-shaped portion of the punch head of the punch mold supported by the turret is engaged with and disengaged from the T groove, the punch head must always be held at a fixed height position with respect to the turret. . Therefore, a punch die having a T-shaped portion in the punch head is configured so that the height position of the T-shaped portion of the punch head is always kept constant even when height adjustment is performed.
[0005]
That is, for example, as shown in FIG. 6, a T-shaped punch head 102 is integrally formed on an upper portion of a punch body 101 that is movable up and down by an upper turret 100 in a turret punch press and is normally supported at a fixed height position. The holder key 103 is integrally attached to the outer peripheral surface of the punch body 101.
[0006]
A punch body 107 is inserted into the punch mounting hole 105 provided in the punch body 101 from below, and is integrally attached by mounting bolts 109 inserted from the punch head 102 side. The punch body 107 is provided with an ejector pin 110 and an elastic member 111 such as a spring for urging the ejector pin 110 downward. Furthermore, a pressing pin 112 and a set screw 113 for pressing the elastic member 111 are provided.
[0007]
In order to adjust the height, an annular spacer 114 is interposed between the punch body 107 and the ceiling of the punch mounting hole 105.
[0008]
[Problems to be solved by the invention]
In the conventional configuration as described above, to adjust the height, after removing the punch holder 101 from the turret 100, the mounting bolt 109 is loosened, the punch body 107 is removed from the punch holder 101, and the spacer 114 is replaced with an optimum thickness. There is a need to.
[0009]
Therefore, conventionally, the punch body 107 has to be removed from the punch holder 101 one by one, and it is extremely troublesome, and spacers 114 of various thicknesses are prepared in advance, and each spacer 114 according to the adjustment height. There is a problem that it is necessary to combine them.
[0010]
[Means for Solving the Problems]
The present invention has been made in view of the conventional problems described above, such as, to the punch holder and punch body and vertically adjustably supported, fixed freely provided to the angle of the rotatable and Nozomu Tokoro adjusting screw member, said punch body Alternatively, an adjustment screw portion to be screwed into the adjustment screw member is provided in a punch driver connected to the punch body, and the adjustment screw member is rotatably mounted in the punch holder below the punch head attached to the punch holder. The punch head is provided with a tool insertion hole for inserting a tool for rotating the adjusting screw member, and the adjusting screw is used to fix the adjusting screw member at a desired rotational position. A fixing device provided in the punch holder with a detachable ball in an engaging recess provided at an appropriate interval on the outer peripheral surface of the member, or an appropriate interval on the upper surface of the adjusting screw member That it comprises a fixing device having a disengagement freely set screw to the punch head engaging recess formed is characterized in.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, a punch mold 1 is supported by a rotatable upper turret UT in a turret punch press (not shown) so as to move up and down, and the lower turret LT facing the upper turret UT A lower die 3 facing the punch die 1 is supported.
[0014]
The punch mold 1 includes a punch holder 5 supported by the upper turret UT so as to be movable up and down. A holder key 9 is integrally attached to the outer peripheral surface of the punch holder 5 by a bolt 7. Further, a punch mounting hole 11 is formed in the axial center portion of the punch holder 5 from the lower side, and a large-diameter receiving hole 13 is formed in the upper portion.
[0015]
A cylindrical punch body 15 having a bottom is mounted in the punch mounting hole 11 so as to be movable up and down, and an ejector pin 17 is provided below the punch body 15 so as to be movable up and down. Between the ejector pin 17 and the punch driver 21 attached to the upper portion of the punch body 15 by the bolt 19, in order to urge the ejector pin 17 downward, an elastic member 23 such as urethane rubber and the like A spacer 25 is mounted. An anti-rotation key 27 is provided on the outer peripheral surface of the punch body 15 so as to engage with the key groove so as to move up and down.
[0016]
A core screw 29 as an adjusting screw member is rotatably mounted in the accommodation hole 13. The core screw 29 is provided with an adjustment screw hole 29S for screwing a male screw portion 21S as an adjustment screw portion provided on the upper portion of the punch driver 21 on the lower surface side. A polygonal tool engagement hole 29H for engaging an appropriate rotary tool is provided.
[0017]
The core screw 29 is restricted in vertical movement by a punch head 33 attached to the upper portion of the punch holder 5 by a plurality of bolts 31, and is only allowed to rotate in the accommodation hole 13.
[0018]
Like the conventional punch head, the punch head 33 has a T-shaped portion 33T at the upper end, and is engaged and disengaged in a horizontal direction with respect to the T groove STT of the striker ST that can be moved up and down in the turret punch press. It is free. The punch head 33 is provided with a tool insertion hole 33H into which a tool for rotating the core screw 29 can be inserted.
[0019]
In order to fix the core screw 29 as an adjusting screw member at a desired rotational position, the punch holder 5 is provided with a fixing device.
[0020]
That is, the punch holder 5 is provided with an engagement recess 35 and a detachable ball 57 such as slits or hemispherical recesses provided at appropriate intervals on the outer peripheral surface of the core screw 29 so as to be movable in the radial direction. . A punch pin 5 is provided with a lock pin 59 provided with a small diameter portion 59S that allows the ball 57 to move outward and a large diameter portion 59L that presses the ball 57 inwardly. It is provided in the pin hole 61 in the vertical direction so as to be movable up and down. Between the lock pin 59 and the bottom of the pin hole 61, an elastic member 63 such as a spring that presses and urges the lock pin 59 upward is elastically mounted, and the upper end of the lock pin 59 is It protrudes into a notch recess 33N formed in the punch head 33.
[0021]
Although the structure of the lower mold 3 is known, in brief, the lower turret LT is provided with a die punch 67 having an upward punch 65 at the center, and is supported by the die punch 67 so as to be movable up and down. Between the ejector plate 69 and the die punch 67, an elastic member 71 that urges the ejector plate 69 upward is elastically mounted, and a stopper bolt 73 that restricts the upward movement of the ejector plate 69 is provided. A die punch 67 is penetrated from below and attached to the ejector plate 69.
[0022]
In the above configuration, when the upper and lower turrets UT and LT in the turret punch press are rotated and the punch mold 1 and the lower mold 3 are positioned below the striker ST located at a predetermined position, the punch in the punch mold 1 is punched. The T-shaped portion 33T of the head 33 enters and engages with the T-groove STT of the striker ST from the horizontal direction.
[0023]
After that, when the plate-like workpiece W is positioned on the lower die 3 and the striker ST is operated to lower the punch die 1, the punch holder 5 and the punch body 15 are lowered integrally, By lowering the ejector plate 69 against the elastic member 71 of the lower mold 3 with the lower surface in contact with the upper surface of the work W, a protruding portion protruding upward by the punch 65 is formed on the work W. . Thereafter, by raising the striker ST, the punch holder 5, the punch body 15 and the like are lifted and returned to their original positions.
[0024]
In the above configuration, when the height dimension from the upper end of the punch head 33 to the lower end of the punch body 15 is adjusted, the punch die 1 is mounted on the upper turret UT or from the upper turret UT to the punch die 1. Is removed and the upper end portion of the lock pin 59 is pushed down so that the small diameter portion 59S is made to correspond to the ball 57, the ball 57 can be moved in the direction away from the engagement recess 35 of the core screw 29, and the core screw 29 is released from being fixed. .
[0025]
In the state where the lock pin 59 is pushed down as described above, a tool is inserted from the tool insertion hole 33H of the punch head 33, and this tool is engaged with the tool engagement hole 29H of the core screw 29 and rotated to thereby rotate the core screw. The punch body 15 is moved up and down in FIG. 1 through the male screw portion 21S of the punch driver 21 screwed into the 29 adjustment screw holes 29S, and the height adjustment is performed.
[0026]
At this time, the punch body 15 is moved up and down with respect to the punch holder 5, and the height position of the punch head 33 with respect to the upper turret UT can be kept constant. Therefore, even if the T-shaped portion 33T of the punch head 33 in the punch die 1 is engaged with and disengaged from the T-groove STT of the striker ST in the turret punch press, the height adjustment can be easily performed. is there.
[0027]
As described above, after adjusting the height by appropriately rotating the core screw 29, when the lock pin 59 is released, the lock pin 59 is pushed up by the action of the elastic member 63, and the large-diameter portion 59L of the lock pin 59 is released. As a result, the ball 57 is moved inward and engages with the engaging recess 35 at the opposite position of the core screw 29, so that the core screw 29 is fixed in a non-rotatable manner.
[0028]
In the first example, the height adjustment of the punch die can be easily performed and the conventional problems as described above can be solved. In the above configuration, the punch body 15 is inserted into the punch mounting hole 11 of the punch holder 5 and the male screw portion 21S of the punch driver 21 connected to the punch body 15 is screwed into the adjustment screw hole 29S of the core screw 29. As a result, the punch holder 5 can be easily assembled, and the punch holder 5 can be made common to the various punch bodies 15.
[0029]
FIG. 2 shows a second example. In this second example, the structure different from the first example is that a fixing device is provided with a large number of engaging recesses 35 at appropriate intervals on the same circumference of the upper surface of the core screw 29 as an adjusting screw member, and a punch head A set screw 75 screwed to 33 is provided so as to be freely disengaged from the engaging recess 35. In the configuration of the second example, components having the same functions as those of the configuration of the first example described above are denoted by the same reference numerals, and redundant description is omitted.
[0030]
In the above configuration, in the state where the set screw 75 is loosened and the fixing of the core screw 29 is released, the height can be adjusted as described above by appropriately rotating the core screw 29 using a tool as described above. It is. Thereafter, the core screw 29 is fixed so as not to rotate by tightening the set screw 75 and engaging the tip portion with the engaging recess 35.
[0031]
FIG. 3 shows a third example. In the first example and the second example, the screw hole 29S is formed as the adjustment screw portion in the core screw 29 as the adjustment screw member, and the male screw portion 21S is formed as the adjustment screw portion in the punch driver 21. In the example, the above configuration is reversed, the male screw portion 29A is formed as the adjustment screw portion in the core screw 29, and the screw hole 21A is formed as the adjustment screw portion in the punch driver 21, and the other configurations are the above-described configurations. The configuration is the same as that of one example.
[0032]
Therefore, in the configuration of the third example, the same reference numerals are given to components having the same functions as those of the configuration of the first example described above, and redundant description is omitted.
[0033]
FIG. 4 shows a fourth example. In the fourth example, the punch head 33 is configured to also serve as an adjusting screw member.
[0034]
That is, in this fourth example, the lower side portion 33L of the punch head 33 having the T-shaped portion 33T at the upper portion is formed thick, and the lower side portion 33L is rotated into the receiving hole 13 formed in the punch holder 5. Engageable. The presser ring 77 attached to the upper portion of the punch holder 5 with a plurality of bolts 31 prevents the punch head 33 from coming off from the accommodation hole 13.
[0035]
In the fixing mechanism for fixing the rotation of the punch head 33, the ball 57 is detachably provided in an engagement recess 33C provided at an appropriate interval on the outer peripheral surface of the large-diameter lower portion 33L of the punch head 33. . The configuration of the lock pin 59 for operating the ball 57 is the same as that of the first example.
[0036]
The punch head 33 is formed with a screw hole 33S as an adjusting screw portion. The screw hole 33S has a punch P having a small diameter at the lower end and is supported by the punch holder 5 so as to be movable up and down. A male screw portion 79S as an adjusting screw portion formed at the upper end of the screw is screwed. A urethane stripper 83 is attached to the lower part of the punch holder 5 via a urethane shim 81.
[0037]
In this configuration, the punch body 33 is turned up and down with respect to the punch holder 5 by rotating the punch head 33 in a state where the ball 57 is released from the engaging recess 33 </ b> C formed in the punch head 33 and the fixation is released. It can be adjusted.
[0038]
At this time, since the upper end portion of the punch head 33 is formed in the T-shaped portion 33T, when the punch head 33 is rotated, it is necessary to rotate 180 ° in consideration of the directionality of the T-shaped portion 33T. There is. However, as shown in FIG. 4B, the punch head 33 may be rotated by 90 ° by forming the T-shaped portion 33T into a regular square shape. That is, it is desirable that the T-shaped portion 33T at the upper end of the punch head 33 is a regular polygon with an even number of sides, and by making the regular polygon with an even number of sides in this way, the rotation angle of the punch head 33 is adjusted to be smaller. It will be possible. Moreover, arbitrary rotation angles can be set by making it circular.
[0039]
FIG. 5 shows a fifth example and shows a modification of the fourth example. In this fifth example, the punch head 33 is rotated in a state where the bolts 31 with the punch heads 33 attached to the punch holder 5 are loosened and removed, and then the punch heads 33 are punched by the bolts 31. It is the structure which fixes to the holder 5 again.
[0040]
In this configuration, as in the fourth example, the punch head 33 also serves as an adjustment screw member, and the plurality of bolts 31 are fixing devices that fix the rotation of the punch head 33 as the adjustment screw member. It constitutes. In addition, since the other structure is the same structure as the structure of the 4th example, the overlapping description is abbreviate | omitted as attaching | subjecting the same code | symbol to the component which show | plays the same function.
[0041]
As described above, in the configuration in which the punch head also serves as the adjusting screw member, the number of component parts can be reduced and the manufacturing can be performed more inexpensively.
[0042]
【The invention's effect】
As can be understood from the above description, in the present invention, the adjusting screw member provided rotatably on the punch holder and the adjusting screw portion formed on the punch body or the punch driver connected to the punch body are screwed together. Since the punch body can be moved up and down with respect to the punch holder by rotating the adjusting screw member and the height of the punch die can be adjusted, the height adjustment is easy and the conventional problems as described above. Can be eliminated.
[Brief description of the drawings]
FIG. 1 is a cross-sectional explanatory view of a punch die according to a first example of the present invention.
FIG. 2 is a cross-sectional explanatory view of a punch die according to a second example of the present invention.
FIG. 3 is an explanatory sectional view of a punch die according to a third example of the present invention.
FIG. 4 is a cross-sectional explanatory view of a punch die according to a fourth example of the present invention.
FIG. 5 is a cross-sectional explanatory view of a punch die according to a fifth example of the present invention.
FIG. 6 is an explanatory cross-sectional view showing a configuration of a conventional punch mold.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Punch metal mold | die 3 Lower mold | type 5 Punch holder 15 Punch body 21 Punch driver 21S Screw part 29 Core screw (adjustment screw member)
29S Screw hole 29H Tool engagement hole 33 Punch head 35 Engagement recess 57 Ball 59 Lock pin

Claims (1)

The punch holder to the punch body and vertically adjustably supported, provided fixable to the angle of the rotatable and Nozomu Tokoro adjusting screw member is screwed to the adjusting screw member to punch driver coupled to the punch body or the punch body An adjusting screw portion is provided, and the adjusting screw member is rotatably mounted in the punch holder below the punch head attached to the punch holder, and the punch head rotates the adjusting screw member. A tool insertion hole is provided for inserting the tool, and in order to fix the adjusting screw member at a desired rotational position, it can be freely engaged and disengaged in an engagement recess provided at an appropriate interval on the outer peripheral surface of the adjusting screw member. A fixing device provided with the ball on the punch holder, or a set screw that can be engaged and disengaged in an engagement recess provided at an appropriate interval on the upper surface of the adjusting screw member. Punch, characterized in that it comprises a locking device provided in the de.

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