JP2003320498A - Die device for press machine and mold replacing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the detachment and attachment of a lower die and an upper die from or to respective holders. <P>SOLUTION: In the die device for a press machine which fixes the upper die set 16 in the upper die holder 15 fixed on the slide side, the upper die holder is detachably provided with a fixing member for fixing the detachment of the upper die set, holding the upper die set with the upper die capable of detaching downward. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die device of a press machine and a die replacement method.

[0002]

2. Description of the Related Art A die apparatus of a press machine comprises a lower die apparatus in which a lower die set is housed in a lower die holder and an upper die apparatus in which an upper die set is housed in an upper die holder. Is fixed to the bolster and the slide by fixing each holder to the lower mold plate and the upper mold plate.

In the conventional mold device of this type, the lower mold device and the upper mold device are handled as one set, and in order to replace the lower mold and the upper mold, both the above mold devices are held in respective holders. It was designed to be detached from the bolster and the slide together with each other, and the lower mold and the upper mold with respect to each holder were taken out together with the plates around the holder by a chain hoist or the like outside the machine and disassembled.

[0004]

In the conventional mold apparatus described above, both mold apparatuses must be taken out of the press machine together with their holders each time the lower mold and the upper mold are replaced. Since the lower mold and the upper mold have to be pulled out upward from the holder together with the plates fitted around the lower mold, there is a problem that it takes a lot of work time to replace the lower mold and the upper mold. .

The present invention has been made in view of the above, and in an upper mold apparatus of a mold apparatus including a lower mold apparatus and an upper mold apparatus, the upper mold set is replaced by removing the upper mold holder from the upper mold plate. It is an object of the present invention to provide a die device for a press machine that enables the upper die set to be easily replaced without removing the upper die and the lower die of the lower die set. It is what

[0006]

In order to achieve the above object, a die device of a press machine according to the present invention is a die machine of a press machine for fixing an upper mold set in an upper mold holder fixed to a slide side. In the mold apparatus, an upper mold set is held by an upper mold holder so that the upper mold holder can be pulled out downward, and a locking member that locks the upper mold holder when the upper mold set is pulled out is disengageably provided.

Further, the lower mold is housed and fixed in a lower mold holder fixed to the base side of the press machine so that the lower mold can be pulled out upward.
Below this lower mold, lower mold raising means for raising the lower mold above the upper surface of the lower mold holder is provided, and the upper mold set is held in the upper mold holder fixed on the slide side so that it can be pulled out downward. The upper mold holder is provided with a locking member that locks the upper mold set when it is pulled out.

Further, in the method of exchanging a die for a press machine according to the present invention, the lower die in the lower die holder is raised above the upper surface of the lower die holder by the lower die raising means to remove the lower die from the lower die holder. Place the upper die mounting / removing jig concentrically on the lower die lifting means, lower the slide, and pull the upper die set downward from the upper die holder to place it on the upper die mounting / removing jig. It was placed concentrically and the upper mold set was removed from the upper mold mounting / removing jig.

[0009]

[Operation] The upper mold set will fall out of the upper mold holder by loosening the locking member. Then, each member constituting the upper mold set is disassembled in a state of falling off from the upper mold holder.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. In the figure, 1 is a lower mold plate fixed on a bolster, 2 is an upper mold plate fixed to the lower surface of a slide, 3 is a lower mold device fixed to the lower mold plate 1, and 4 is a fixed upper mold plate 2. It is an upper mold device.

The lower mold apparatus 3 comprises a lower mold holder 5 fixed to the lower mold plate 1 and a lower mold set 6 housed in the lower mold holder 5. The lower mold set 6 is composed of the lower mold plate 1. The ring plate 7 placed on the upper die is vertically slidable in the lower die holder 5, and the lower die 6a placed on the ring plate 7 and vertically moved to the axial center of the ring plate 7. The knockout 9 is arranged so that its upper end faces the lower die 6a and its lower end faces the tip of the knockout pin 8, and is placed on the lower die plate 1 and the ring plate 7
Of the assembling ring 10, which is fitted between the assembling ring 10 and the lower die holder 5, which is fitted between the assembling ring 10 and the lower die holder 5, and guides the lift pin 11 in the axial direction. It is composed of a lower die take-out ring 13 and the like which is arranged between them so as to be movable in the vertical direction. The upper end of the lift pin 11 is opposed to the lower surface of the lower die take-out ring 13. The lower die 6a is fixed to the lower die holder 5 by a clamp member 14 while being placed on the ring plate 7.

The lower die 6a is pushed up by the lift pins 11 with the clamp member 14 removed, so that the lower surface of the lower die 6a is positioned above the upper surface of the lower die holder 5 through the lower die take-out ring 13. It is designed to be pushed up.

The upper mold unit 4 is composed of an upper mold holder 15 fixed to the upper mold plate 2 and an upper mold set 16 housed in the upper mold holder 15 so as to be slidable downward. The mold set 16 is locked by a plurality of locking bolts 17 radially provided on the upper mold holder 15.

The upper die set 16 includes an upper die plate member 18 and an upper die case 19, which are vertically stacked, and a punch 20 which is an upper die concentrically fitted so as to come out upward from the upper die case 19. It consists of an inner case 21 and the like.
The locking bolt 17 is attached to the outer periphery of the tip of the upper mold case 19.
Is provided with a locking surface 19a for locking the tip of the. A cylindrical portion 22 is provided on the outer periphery of the tip portion of the upper mold case 19.

An upper die plate member 18 of the upper die set 16;
Suspension taps 23, 23 ... Are provided on the upper surfaces of the upper mold case 19, the punch 20, and the inner case 21, respectively, and suspending metal fittings can be screwed to these to be lifted by a wire or the like.

In the above structure, when the material is put into the lower die 6a and the slide is lowered to lower the upper die device 4, the material is moved by the lower die 6a, the punch 20 and the inner case 21 to the state shown in FIG. As shown, it is molded into a molded product 24. The molded product 24 is taken out from the lower mold 6a by raising the knockout 9 after raising the upper mold device 4.

Next, a procedure for replacing the lower mold 6a and the upper mold set 16 in the lower mold device 3 and the upper mold device 4 will be described.

The replacement of the lower mold 6a is carried out with the upper mold device 4 raised. First, in FIG. 1, the clamp member 14
To release the clamp for the lower die holder 5, and then lift the lift pin 11 to raise the lower die take-out ring 13 at the upper end of the lift pin 11 to lower the lower die 6a as shown in FIG.
Is raised until its lower end is above the upper end of the lower die holder 5. Then, the lower die 6a is moved laterally or lifted to be moved to, for example, a table (not shown) provided on the side of the upper die holder 5 to take out the lower die 6a to the outside. In order to set a new lower mold 6a on the lower mold holder 5, the above-mentioned taking-out procedure is reversed.

The replacement of the upper mold set 16 will be described with reference to FIGS. The replacement of the upper mold set 16 is performed during the replacement work of the lower mold 6a, that is, the lower mold 6a.
It is performed in a state in which a is removed from the lower die holder 5. To replace the upper mold set 16, a cylindrical upper mold attachment / detachment jig 25 is used.

The upper die attachment / detachment jig 25 has a lower fitting portion 25a which is fitted to the inner periphery of the lower die removal ring 13 at the lower portion.
However, the upper fitting portion 25b that fits into the cylindrical portion 22 provided on the outer periphery of the lower end of the upper mold case 19 is provided on the upper portion.

As shown in FIG. 3, by the above operation, the lower mold 6
In a state in which a is taken out from the lower die holder 5, the upper die mounting / removing jig 2 is mounted on the lower die taking out ring 13 which is in a raised state.
Assemble 5. Then, the slide is lowered to a position where the lower surface of the upper die 4 is slightly spaced from the upper surface of the upper die mounting / removing jig 25. After that, the lift pins 11 are pushed up to raise the lower die removal ring 13 by the above-mentioned gap, and the upper die case 19 is brought into contact with the upper surface of the upper die attachment / detachment jig 25. At this time, the cylindrical portion 22 of the upper die case 19 is fitted concentrically with the upper fitting portion 25b of the removal jig 25.

Next, when the locking bolt 17 is loosened and the tip of the locking bolt 17 is retracted from the inner surface of the upper die holder 15, the locking by the locking bolt 17 is released, and the slide is raised in this state, as shown in FIG. So that the upper mold set 16
The upper die holder 15 is lifted while being mounted on the upper die mounting / removing jig 25.

In this state, the slide is moved to the top dead center and the upper die holder 15 is further raised.
A wide space is secured between the upper mold set 16 and the upper mold set 16 that has fallen off from the upper mold holder 15, and the upper mold plate 18 and the punch 2 are provided.
0, the inner case 21, and the upper mold case 19 are removed in this order. These are removed by screwing a suspending tool to a suspending tap 23 provided on the upper surface of each and suspending with a wire or the like. At this time, if the lower die removing ring 13 is lowered to lower the upper surface of the upper die plate 18, these can be taken out easily.

When mounting another upper mold set on the upper mold holder, the upper mold set is placed on the upper mold mounting / removing jig and the slide is lowered to store the upper mold set in the upper mold holder. Then, lock with the locking bolt. At this time, the upper die set is arranged concentrically with the upper and lower holders by the upper die mounting / removing jig, so that the upper die set and the upper die holder can be easily assembled.

[0025]

According to the present invention, the upper die set can be detached downward without detaching the upper die holder for housing the upper die set from the slide, and the upper die set can be easily replaced. In addition, the lower mold of the lower mold device can be easily removed from the lower mold holder, which allows the molds of the lower mold device and the upper mold device to be easily replaced. You can

Further, according to the method of the present invention, the upper mold set can be detached from the upper mold and the upper mold holder while being concentric with each other, and another upper mold set can be detached from the upper mold holder. When the upper die set is attached to the upper die holder, it can be arranged concentrically with the holder on the upper die attachment / detachment jig, so that the upper die set can be easily detached and attached to the upper die holder.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a mold device according to the present invention.

FIG. 2 is a cross-sectional view showing a separated state of the lower mold.

FIG. 3 is a cross-sectional view showing an upper mold releasing process.

FIG. 4 is a cross-sectional view showing the upper mold releasing process.

[Explanation of symbols]

1 ... Upper mold plate, 2 ... Upper mold plate, 3 ... Lower mold device,
4 ... Upper mold device, 5 ... Lower mold holder, 6 ... Lower mold set, 6a
… Lower mold, 7… Ring plate, 8… Knockout pin,
9 ... Knockout, 10 ... Assembly ring, 11 ... Lift pin, 12 ... Lift pin guide member, 13 ... Lower die extraction ring, 14 ... Clamp member, 15 ... Upper die holder, 16 ... Upper die set, 17 ... Lock bolt , 18 ... Upper mold plate member, 19 ... Upper mold case, 20 ... Punch, 21 ... Inner case, 22 ... Cylindrical part, 23 ... Hanging tap, 24 ... Molded product, 25 ... Upper mold mounting / removing jig.

Claims (3)

[Claims] 1. A mold device of a press machine for fixing an upper mold set in an upper mold holder fixed to a slide side, wherein the upper mold set is held in the upper mold holder so that the upper mold set can be pulled out downward, and the upper mold holder is held in the upper mold holder. A metal mold device for a press machine, wherein a locking member for locking the upper mold set from coming out is detachably provided. 2. A lower die is housed and fixed in a lower die holder fixed to a base side of a press machine so that the lower die can be pulled out upward, and the lower die is above the lower die holder above the lower die. A locking member that is provided with a lower die raising means for raising the upper die set to a lower part of the upper die holder that is fixed to the slide side so that the upper die set can be pulled out downward, and is locked to the upper die holder when the upper die set is pulled out. A mold device for a press machine, which is provided so that it can be engaged and disengaged. 3. The lower mold in the lower mold holder is lifted up from the upper surface of the lower mold holder by the lower mold lifting means to remove it from the lower mold holder, and then the upper mold mounting / removing jig is mounted on the lower mold lifting means. Place the tool concentrically, lower the slide, pull out the upper mold set from the upper mold holder downward, and place it concentrically on the upper mold attachment / detachment jig. A die replacement method for a press machine, characterized in that an upper die set is removed from the tool.