JP2000197933A - Die unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die unit capable of detecting breaking of a tap in the case that an arranged position of a guide post is changeable against an upper holder and a lover holder, and a tapping unit is provided as an upper die in a die set. SOLUTION: An upper die holder 3 supporting a tapping unit 1 as an upper die is provided, and further is provided a lower die holder 7 to support a lower die 5 equipped with a hole 31 into which a tap TP provided in the tapping unit 1 is capable of entering. A guide post 9 is erected on a fixed block 47 attached to a side surface of a lower die holder 7 with its fitting position changeable, a slide block 45 attached to a side surface of the upper holder 3 with its fitting postion changeable is provided so as to freely move up and down along the guide post 9, and a lifter device 11 to support the upper die holder 3 at a position of a prescribed height is provided. Both the upper die holder 3 and the lower die holder 7 are polygonal, and the fixed block 47 and the slide block 45 have a same figure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die apparatus used for press working, and more particularly, to an upper die holder for supporting an upper die and a lower die holder for supporting a lower die, such as a die set. The present invention relates to a mold device having a configuration in which the upper die holder is vertically movable along a vertically provided guide post.

[0002]

2. Description of the Related Art In a conventional die set, when viewed in a plan view, a center post type in which a guide post is disposed at the center of opposing side surfaces of an upper die holder and a lower die holder formed in a substantially square shape. Various types, such as a back post type in which guide posts are arranged on both sides of the rear side of a rectangular upper and lower holder, and a diagonal post type in which guide posts are arranged at diagonal positions in a rectangular upper and lower holder. There is.

[0003] In addition, there is a die set of this type in which a tapping unit is incorporated and tapping is performed as part of the press in synchronization with the movement of the press.

[0004]

In the conventional die set, the arrangement position of the guide post with respect to the upper die holder and the lower die holder is fixed and the position cannot be changed. Therefore, for example, when it is desired to change the arrangement position of the guide posts according to the shape of the workpiece, the transfer direction, and the shapes and dimensions of the upper and lower dies to be mounted, the arrangement position of the guide posts cannot be changed, and a new die is required. There is a problem that it may not be possible to respond unless a set is created.

Further, in a configuration in which a tapping unit is incorporated in a die set, there is a problem that a breakage of a tap or the like cannot be detected and a processing defect may occur.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and the invention according to claim 1 is directed to an upper die holder for supporting an upper die and a lower die for supporting a lower die. In a mold apparatus provided with a holder and vertically opposed, and the upper die holder is provided vertically movable along a vertically provided guide post, a fixed block for fixedly supporting the lower end of the guide post, A slide block that can be attached to a given side of the lower mold holder so as to be changeable in position and that can move up and down along the guide post is attached to an arbitrary side of the upper mold holder so that the attachment position can be changed. Configuration.

According to a second aspect of the present invention, in the mold apparatus according to the first aspect, both the upper die holder and the lower die holder are polygonal, and the fixed block and the slide block have the same shape.

According to a third aspect of the present invention, there is provided an upper die holder which detachably supports a tapping unit as an upper die, and a lower hole having an entrance hole in which a tap which is vertically movable in the tapping unit can enter. A lower mold holder for detachably supporting the mold is provided, and a guide post is erected on a fixed block mounted so that the mounting position can be changed with respect to an arbitrary side surface of the lower mold holder. On the other hand, a slide block mounted so that the mounting position can be changed is provided along the guide post so as to be vertically movable, and a lifter device for supporting the upper die holder at a predetermined height position is provided.

According to a fourth aspect of the present invention, in the mold apparatus of the third aspect, a tap detecting device for detecting that the lower end of the tap has entered the lower mold entrance hole is provided. is there.

According to a fifth aspect of the present invention, in the mold apparatus according to the fourth aspect, the tap detecting device includes a pin member pressed by the tip of the tap, and a sensor for detecting the movement of the pin member. Configuration.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a mold apparatus according to the present embodiment includes an upper die holder 3 which detachably supports a tapping unit 1 as an example of an upper die, and a lower die. A lower mold holder 7 which detachably supports the upper mold holder 5 is provided vertically, and the upper mold holder 3 is vertically movable along a suitable number of vertically provided guide posts 9. 11, the upper die holder 3 is supported at a predetermined height position.

The upper die holder 3 is formed in a polygonal shape (square in this example) as shown in FIG. 2, and an upper die for detachably mounting the upper die in the center thereof. A mounting hole 13 is formed, and a punch guide key 17 (see FIG. 1) for positioning the upper die mounted in the upper die mounting hole 13 on the lower surface (the upper surface in FIG. 2) is provided with a set screw 15. Installed by.

A vertical key groove 19 is formed at the center of each side surface of the upper die holder 3.
There is provided a screw hole 23 for fixing the holder key 21 engaged with the screw with a set screw (not shown). Also, a plurality of screw holes 25 are provided on each side surface of the upper die holder 3 at symmetrical positions centered around the key groove 19.
Is provided. Further, a through hole 27 penetrating vertically is provided at a position near each corner of the upper die holder 3.

The tapping unit 1 as an example of the upper die removably mounted in the upper die mounting hole 13 of the upper die holder 3 has a known configuration. The function thereof is schematically described as follows. It is.

That is, the tapping unit 1 includes a punch head 1B which can move up and down with respect to the unit body 1A. The punch head 1B includes a unit body 1
A, the punch head 1B is constantly urged upward by a biasing means such as a strong coil spring or gas spring, and the punch head 1B is relatively lowered by a ram of a press machine against the biasing means. Then, the unit body 1A
The tap TP provided at the lower position is lowered while rotating forward, and tapping is performed on a punched hole of the work W located on the lower mold 5.
When the ram or the like of the press machine is raised, the punch head 1B is raised, and the tap TP is raised while rotating in the reverse direction.

The lower die holder 7 is for supporting the lower die 5. The outer shape and dimensions of the lower die holder 7 are substantially the same as those of the upper die holder 3, and the lower die holder 7
In the three side surfaces, there are provided a key groove 19 provided on the side surface of the upper die holder 3, a screw hole 23 for fixing the holder key 21 with a set screw, and a plurality of screw holes 25 provided symmetrically with respect to the key groove 19. A key groove and a screw hole 25 (see FIG. 1) are provided with the same positional relationship as above. Further, the lower die holder 7 is provided with a vertical through hole having the same positional relationship as the plurality of through holes 27 provided in the upper die holder 3.

A die mounting hole 29 for detachably mounting and supporting the lower die 5 is formed on the upper surface of the lower die holder 7, and the bottom of the die mounting hole 29 is formed in the entrance hole 5 H of the lower die 5. A detection pin 33 for supporting a pin member 31 housed in a vertically movable manner is provided movably up and down.
Is always urged to a predetermined height position by an appropriate elastic member 35 such as a coil spring or the like.

A circumferential groove 33G is formed as a cam on the peripheral surface of the detection pin 33. The distal end of a relation pin 37 supported horizontally and movably by the lower die holder 7 is formed in the peripheral groove 33G. Are engaged. The rear end of the relation pin 37 slidably penetrates a hollow screw member 39 screwed to one side surface of the lower mold holder 7, and the rear end 37E of the relation pin 37 has a bracket. A sensor 43 such as a limit switch attached to the lower mold holder 7 via 41 is provided correspondingly.

With the above structure, the tapping of the work W is performed, and the lower end of the tap TP provided in the tapping unit 1 enters the entry hole 5H of the lower die 5, and comes into contact with the pin member 31 to lower. When pressed in the direction, the detection pin 33
Is lowered against the elastic member 35, and the relation pin 37 whose tip is engaged with the circumferential groove of the detection pin 33 is moved horizontally against the elastic member 45 such as a coil spring. The movement of the rear end 37 </ b> E activates the sensor 43, so that it is detected that the lower end of the tap TP has contacted the pin member 31.

In other words, when the work W is tapped, the lower end of the tap TP causes the pin member 31 to move.
If is not pressed, the sensor 43 is not operated, so that breakage of the tap TP or the like can be detected.

According to the above construction, the lower die 5 and the lower die 5
The sensor 43 and the like can be used in common even when the pin member 31 is attached and detached and replaced in accordance with the height dimension of. In the above configuration, the detection pin 33
Although the vertical movement is converted into the horizontal movement of the relation pin 37 to operate the sensor 43, the sensor may be directly operated by the vertical movement of the detection pin 33.

The upper die holder 3 and the lower die holder 7 are vertically opposed to each other, and the upper die holder 3 is vertically movable along the guide post 9. A slide block 45 is mounted on one desired side surface of the lower mold holder 3 so that the mounting position can be changed, and a fixed block 47 is mounted on one desired side surface of the lower die holder 7 so that the mounting position can be changed.

The slide block 45 and the fixed block 47 have the same configuration, as shown in FIG.
That is, the slide block 45 and the fixed block 47
Is formed in the shape of a rectangular parallelepiped block having a vertical through hole 49 at the center through which the guide post 9 can penetrate, and mounting screw holes 5 are provided at a plurality of locations around the through hole 49.
1 is provided vertically penetrating, and a plurality of knock holes 53 for driving knock pins are provided vertically.

Further, adjacent side surfaces of the slide block 45 and the fixed block 47 are formed on a first mounting surface 55 and a second mounting surface 57. The first and second mounting surfaces 5
The key grooves 19 and screw holes 25 formed on the side surfaces of the upper die holder 3 and the lower die holder 7 are provided at the center of
A vertical key groove 59 and a horizontal through hole 61 corresponding to the lower die holder 7 (not shown) are provided.

The slide block 45 engages the key groove 59 formed on the first mounting surface 55 with the holder key 21 engaged with the key groove 19 provided on one desired side surface of the upper die holder 3, And a through hole 6 formed in the first mounting surface 55.
1 is screwed into a plurality of screw holes 25 of the upper die holder 3 so as to be detachably attached to a desired one side surface of the upper die holder 3. Installed.

The second mounting surface 57 of the slide block 45 can be joined and mounted on one desired side surface of the upper die holder 3. In this case, the distance from the upper die holder 3 to the guide post 9 can be increased. Can be changed.

The fixed block 47 is detachably attached to a desired one side surface of the lower mold holder 7 by the same attachment structure as the slide block 45.

As will be understood, the slide block 45 is detachable from a plurality of side surfaces of the upper die holder 3, and selects the first and second mounting surfaces 55, 57 of the slide block 45. It can be attached by mounting.
Similarly, the fixed block 47 can be attached to and detached from a plurality of side surfaces other than the side surface on which the sensor 43 is mounted on the lower die holder 7 by selecting the first and second mounting surfaces 55 and 57.

Therefore, the slide block 45 can be attached to an arbitrary side surface of the upper die holder 3 and the first and second mounting surfaces 55 and 57 can be selected, so that the upper die in the upper die holder 3 can be selected. The distance dimension from the center of the mounting hole 13 to the center of the through hole 49 of the slide block 45 can be changed. The relationship between the fixed block 47 fixed to the lower die holder 7 by the mounting bolts 65 and the lower die holder 7 is the same as the relationship between the upper die holder 3 and the slide block 45. A detailed description of the relationship is omitted.

The upper die holder 3 along the guide post 9
In order to move up and down, the fixed guide holder 67 fixedly supporting the lower end of the guide post 9 is provided with the fixed block 47.
And a plurality of mounting bolts 69 penetrating through the fixed guide holder 67 and screwed into the mounting screw holes 51 of the fixing block 47, and penetrating through the fixing block 47 to engage with the knock holes 53. The fixed guide holder 67 is fixed to the fixed block 47 by a knock pin (not shown).

A slide guide holder 71, which is guided by the guide post 9 and can move up and down, is mounted on the lower surface of the slide block 45 by mounting bolts 73 and knock pins (not shown). The relationship between the mounting of the slide guide holder 71 and the slide block 45 is the same as the relationship between the fixed block 47 and the fixed guide holder 67.

In order to support the upper die holder 3 at a predetermined height position, the lifter device 11 composed of, for example, a lifter spring is provided between the fixed guide holder 67 and the slide guide holder 71. I have. The lifter device 11 is not limited to a coil spring or the like, but may be an appropriate fluid pressure cylinder or the like.

In the above configuration, the lower die holder 7
The lower die holder 7 is fixed to, for example, a bolster of a press machine or an appropriate base member BS by a plurality of fixing bolts penetrating a plurality of through holes 27 (not shown) in the vertical direction provided in the above. Then, after positioning the workpiece W after the punching process on the lower die 5, the tapping unit 1 is moved by a vertically movable ram (not shown) in a press machine.
When the punch head 1B is pressed and lowered, first, the upper die holder 3 is lowered against the urging force of the lifter device 11, and the lower end of the tapping unit 1 comes into contact with the upper surface of the work W. Then, the punch head 1B is lowered relative to the tapping unit 1, and the tapping process is performed on the work W by the tap TP provided in the tapping unit 1 as described above.

When the work W is subjected to tapping processing,
Since the tap TP enters into the entry hole 5H of the lower die 5 and contacts the pin member 31 to push it down, the sensor 4
3, the lowering operation of the pin member 31 is detected. In other words, when the sensor 43 is not operated even though the punch head 1B is lowered, the tap TP
Can be detected as having broken.

Therefore, when the damage of the tap TP is detected, for example, by stopping the processing of the work W,
It is possible to prevent processing defects of the work W.

FIG. 4 and FIG. 5 show that the upper mold holder 75 and the lower mold holder 77 are formed in an octagon as an example of a polygon when viewed in a plan view. 47 shows a case in which the guide post 9 is arranged to be opposed to the cover 47. Since the two guide posts 9 are opposed to each other, a stable guide can be performed.

Further, since both the upper mold holder 75 and the lower mold holder 77 are octagonal, taking into account the maintenance and workability of the mold, as shown in FIGS. The arrangement position of one guide post 9 can be converted to the displaced position. Further, in consideration of the positional accuracy and rigidity of the upper and lower molds, three or more guide posts 9 can be arranged at appropriate positions as shown in FIGS. 6 (C) and 6 (D).

FIG. 7 shows a second example of the lower die.
The lower die 81 is provided with a die mounting hole 29 in the lower die holder 7.
A disc-shaped support plate 85 is provided on an upper portion of a disc-shaped base plate 83 which is detachably attached to the base plate 83 so as to be vertically movable. An elastic member 87 such as urethane rubber for urging the support plate 85 upward is elastically mounted between the base plate 83 and the support plate 85, and a stopper for restricting the upper limit of the support plate 85. The upper end of the bolt 89 is threadably engaged with the support plate 85 through the base plate 83 so as to be vertically movable from below.

At the center of the support plate 85, there is provided a detection pin 91 which can be moved up and down with the lower end of the tap provided in the tapping unit abutting when the work W is being tapped. Reference numeral 91 is urged upward by an elastic member 93 such as a coil spring provided in a recess formed at the center of the upper surface of the base plate 83.

When the lower die 81 is mounted in the die mounting hole 29 of the lower die holder 7 instead of the lower die 5, when the detection pin 91 is pressed down by the tap TP, the detection pin 33 is immediately pressed down. It is.

That is, even when various lower dies are attached to and detached from the lower die holder 7, the detection pins 33 and the like can be shared.

In the lower die 81, the impact when the lower surface of the unit body of the tapping unit comes into contact with the work W on the support plate 85 is reduced by the elastic member 87 and is opposed to the elastic member 87. After the support plate 85 is lowered so as to contact the base plate 83, the tap in the tapping unit is rotated and lowered to perform tapping processing on the work W, and the lower end of the tap contacts the detection pin 91. When the detection pin 91 is lowered, a sensor 95 such as a proximity switch provided corresponding to the lower end of the detection pin 91 is operated to detect that a tap abuts on the detection pin 91. Is also good. in this case,
Even when the detection pin 33, the sensor 43, and the like are not provided on the lower mold holder 7, the apparatus can cope with the detection of a broken tap or the like.

That is, the sensor for detecting the breakage of the tap may be provided on the lower die or on the lower die holder.

[0044]

As will be understood from the above description, in the present invention, the upper die holder for supporting the upper die and the lower die holder for supporting the lower die are polygonal, and the lower end of the guide post is provided. The fixed block that fixedly supports the upper die holder can be mounted on any side surface of the lower die holder, and the slide block that can move up and down along the guide post is mounted on any side surface of the upper die holder. Since the position can be changed, the arrangement position of the guide post can be easily changed.

In a configuration in which a tapping unit is incorporated as an upper die to perform tapping processing on a workpiece, a pin member that abuts on a lower end of a tap provided in the tapping unit is provided in a lower die to detect a tap. Therefore, the breakage of the tap can be easily detected.

[Brief description of the drawings]

FIG. 1 is a front view showing a mold apparatus according to an embodiment of the present invention, which is partially sectioned.

FIG. 2 is an explanatory diagram showing a configuration of an upper die holder.

FIG. 3 is an explanatory diagram showing a configuration of a slide block and a fixed block.

FIG. 4 is an explanatory plan view showing an example in which a slide block and a fixed block are formed in an octagon.

FIG. 5 is an explanatory front view showing an example in which a slide block and a fixed block are formed in an octagon.

FIG. 6 is an explanatory view showing various forms of arrangement positions of post guides.

FIG. 7 is an explanatory sectional view showing a second example of the lower die.

[Explanation of symbols]

 1 Tapping Unit 3,75 Upper Die Holder 5,81 Lower Die 7,77 Lower Die Holder 9 Guide Post 11 Lifter Device 13 Upper Die Mounting Hole 19,59 Key Groove 25 Screw Hole 27,49,61 Through Hole 29 Die Mounting Hole 31 Pin member 33,91 Detection pin 43,95 Sensor 45 Slide block 47 Fixed block 51 Mounting screw hole 55 First mounting surface 57 Second mounting surface 67 Fixed guide holder 71 Slide guide holder 83 Base plate 85 Support plate

Claims (5)

[Claims] 1. An upper mold holder for supporting an upper mold and a lower mold holder for supporting a lower mold are vertically opposed to each other, and the upper mold holder is vertically movable along a vertically provided guide post. In the provided die apparatus, a fixing block for fixing and supporting the lower end of the guide post is mounted on an arbitrary side surface of the lower die holder so as to be changeable in mounting position, and is movable up and down along the guide post. Slide block,
A die apparatus, wherein the upper die holder is mounted on an arbitrary side face so that the mounting position can be changed. 2. The mold apparatus according to claim 1, wherein both the upper mold holder and the lower mold holder have a polygonal shape, and the fixed block and the slide block have the same shape. 3. An upper die holder which detachably supports a tapping unit as an upper die, and detachably supports a lower die having an entrance hole into which a tap provided to be vertically movable in the tapping unit can enter. A lower die holder is provided, and a guide post is erected on a fixed block mounted so that the mounting position can be changed on any side of the lower die holder, and the mounting position can be changed on any side of the upper die holder. And a lifter device for supporting the upper die holder at a predetermined height position with a slide block attached to the guide post being vertically movable along the guide post. 4. The mold apparatus according to claim 3, further comprising a tap detecting device for detecting that a lower end portion of the tap has entered the entrance hole of the lower mold. . 5. The mold device according to claim 4, wherein the tap detecting device includes a pin member pressed by the tip of the tap, and a sensor for detecting the movement of the pin member. Mold device.