JPH06182462A - Device for assisting disassembly of press die - Google Patents

Abstract

PURPOSE:To safely and easily disassemble a press die. CONSTITUTION:An assisting cylinder 14 is provided between an upper die 1 and a lower die 2, a placing stand 8 placing a press die is supported with an elastic member 12, a cylinder 10 having a piston rod 11 which is movable by being linked with an up and down movement of this mounting stand 8 is provided, and this cylinder 10 and the assisting cylinder 14 are connected and communicated with a piping 15. Therefore, when the press die is placed on the mounting stand 8, the piston rod 11 is pushed down by pushing down the mounting stand 8 with a self-weight of the press die, a hydraulic medium is moved to the assisting cylinder 14 through the piping 15, and the upper die is pushed up while keeping a horizontality. Therefore, a hand operation of an operator at a time ascending the upper die 1 does not exist at all, and because the upper die 1 is supported in a stable state, the danger does not exist, together because the press die is only placed on the placing stand 8, the upper die 1 can be easily ascended, and the press die can be easily disassembled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press die disassembly assisting device for safely and easily disassembling a press die when repairing the press die.

[0002]

2. Description of the Related Art A press die composed of an upper die and a lower die moves vertically by guiding the upper die to a guide post in order to perform highly accurate alignment between the upper die and the lower die. I am trying to let you. Further, in order to obtain the highly accurate alignment, the fitting between the guide post and the upper die is a highly accurate fitting without rattling. There is no problem because the upper die moves up and down by the ram during normal pressing, but when the mold is disassembled and the mold is restored, the fitting between the guide post and the upper mold is a highly accurate fit. However, if the upper mold is slightly tilted when it is lifted by a jig other than the ram while maintaining the state where the upper mold is guided by the guide post, the so-called gaging between the upper mold and the guide post will occur. As a result, the upper die cannot be moved up and down smoothly.

Therefore, conventionally, as shown in FIG.
Jacks 3 are interposed between the upper die 1 and the lower die 2 at a plurality of positions, and the jack 3 corrects the inclination of the upper die 1 while the wire rope 5 hung on the hook 4 is used to interpose the upper die 1
Was lifted by the crane 6 and the upper die 1 was opened and restored while maintaining the state in which the upper die 1 was guided by the guide post 7. And after repairing the mold, jack 3
The upper mold 1 is suspended by the crane 6 via the wire rope 5 hung on the hook 4 while correcting the inclination of the upper mold 1 by maintaining the state in which the upper mold 1 is guided by the guide posts 7 I was trying to close.

Further, as another conventional example, Jitsuko Sho 62-17136
As disclosed in the publication, a ram of a press machine guides an upper die to a guide post and raises it, and then the upper die is temporarily pulled out from the guide post, and a positioning jig is provided between the guide post and the upper die. After placing the upper die on the guide post via the interposition, separate the ram from the upper die, and move it to the repair position by the bolster with the upper die placed on the guide post via the positioning jig. The upper mold is lifted with a crane so that the mold can be opened and repaired. Also,
After repairing, suspend the upper mold with a crane, place the upper mold on the guide post with the positioning member interposed between the guide post and the lower mold, and move the bolster to move the upper mold to the ram. Place it in the position, connect the upper die and the ram, lift the upper die a little with the ram, remove the positioning jig, and then guide the upper die to the guide post with the ram and lower it to press it. I am trying to restore it.

[0005]

In the above prior art, in the case of using a jack, a plurality of workers must operate the jack while observing the galling state between the upper die and the guide post. Requires skill and
Since the fitting between the upper mold and the guide post is highly accurate, even if the upper mold is slightly tilted due to the amount of operation of the jack, galling will occur and the upper mold cannot move smoothly, and It takes time and labor for a plurality of workers to operate the plurality of jacks so as not to cause a slight amount of inclination of the upper mold, and there is a problem that a large number of man-hours and a time are required to repair the mold.

Next, in the case of using the positioning member, the upper die and the guide post are manually operated in a state where the upper die is pulled out from the guide post by a ram and after the repair is completed, the upper die is lifted by a crane. It is very dangerous because a positioning member must be interposed between the positioning die and the positioning member, and the upper die moves in an unstable state with the positioning member placed on the guide post. The problem is that it is dangerous.

The present invention has been made to solve the above problems, and provides a press die disassembly assisting device which can disassemble the press die safely and easily when the press die is restored. Is.

[0008]

Means for Solving the Problems According to the present invention for solving the above problems, in a press die for guiding a guide post to move an upper die up and down and press working with a lower die, An auxiliary cylinder that is detachably provided between the upper mold and the lower mold and is expandable and contractible in the moving direction of the upper mold; and a mounting table on which a press mold is mounted and supported by an elastic member from below.
It is characterized by comprising a cylinder device having a piston rod that is movable in conjunction with the vertical movement of the mounting table, and a pipe that connects the cylinder of the cylinder device and the auxiliary cylinder.

[0009]

Since the present invention is constructed in this way, it has the following actions. That is, an auxiliary cylinder that is movable in the moving direction of the upper die between a lower die and the upper die of a press die that is guided by a guide post to move the upper die up and down and presses the lower die. A cylinder device having a piston rod that is detachably provided, supports a mounting table on which a press die is mounted from below by an elastic member, and has a piston rod that can move in conjunction with vertical movement of the mounting table. Since the cylinder and the auxiliary cylinder are connected by piping to communicate with each other, it is possible to push down the mounting table by placing the pressing mold on the mounting table against the elastic force of the elastic member by the weight of the pressing mold. Then, by lowering the mounting table, the piston rod of the cylinder device that moves in conjunction with the mounting table is pushed down, and the working medium in the cylinder device is moved through the pipe to the auxiliary cylinder provided between the upper mold and the lower mold. Allowed, it is possible to support and maintain the horizontality of the upper mold while generating upward force to the upper die.

After the press die is repaired, the press die is lifted by a crane to raise the mounting table by the elastic force of the elastic member, and the piston rod moving in conjunction with the raising of the mounting table moves. As a result, the working medium in the auxiliary cylinder moves into the cylinder through the pipe, the auxiliary cylinder contracts, and the upper die can be lowered along the guide post by its own weight.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1, the mounting table 8 is guided by a guide surface 13 and is supported by a support table 9 so as to be vertically movable. A compression is provided between the support table 9 and the mounting table 8. The spring 12 is interposed, the cylinder 10 is fixed to the support base 9, and the rod 11 thereof is connected to the mounting base 8 in this embodiment. The rod 11 does not necessarily have to be connected to the mounting table 8, and the end portion of the rod 11 may be in contact with the mounting table 8.

An auxiliary cylinder 14 is provided between the upper die 1 and the lower die 2 and around the guide post 7. The auxiliary cylinder 14 has two semi-arcuate cylinders 141 in FIG. 3 which is shown in a cross section, and these two cylinders 141 are connected by a hinge 143. Thereby, the cylinder 141 can be arranged around the guide post 7. Each of the two cylinders 141 is provided with a nozzle 142 for circulating a working medium, and the two nozzles 142 are connected by a flexible tube 145 via a T-shaped joint 146. The pressure in the two cylinders 141 is kept equal.

Further, as shown in FIG. 4 which is a longitudinal sectional view taken along line AA of FIG.
47 are provided. The cylinder 10 and the auxiliary cylinder 14 are connected by a pipe 15 as shown in FIG.
In this embodiment, the pipes 15 are connected in a one-to-one correspondence with the cylinders 10 and the auxiliary cylinders 14. However, as shown by phantom lines 151, after connecting the cylinders 10 to each other, the respective auxiliary cylinders are connected. You may connect to 14. By connecting like the virtual line 151 in this way, even if the mounting table 8 moves up and down with a slight inclination, the same pressure is applied to all of the auxiliary cylinders 14. The hook 4 is attached to the lower mold 2, and a wire rope 5 is hung on the hook 4 and a crane 6 is used to lift the upper mold 1 and the lower mold 2.
And can be hung or hung together.

The operation of this embodiment thus constructed will be described below. In the state shown in FIG. 1, the upper mold 1 and the lower mold 2 are carried by the crane 6 to the mounting table 8 installed at the restoration place by disconnecting the ram of the press device (not shown) and the upper mold 1. is there. Next, the auxiliary cylinder 14 is mounted. However, the auxiliary cylinder 14 may be mounted in the state shown in FIG. 1, and it is mounted with the upper die 1 and the lower die 2 on the bolster (not shown). The pipe 15 may be connected at the time when the pipe 15 is brought to the place. In either case, the upper mold 1
Since the auxiliary cylinder 14 can be mounted by being carried by the crane 6 in a state where the lower mold 2 and the lower mold 2 are closed and positioned by the guide post 7 in a stable state, There is no danger.

Next, when the upper die 1 and the lower die 2 are suspended by the crane 6 and placed on the mounting table 8, the mounting table 8 is supported by the support table 9 via the compression spring 12 so as to be movable up and down. As shown in FIG. 2, it is possible to lower the mounting table 8 while compressing the compression spring 12 by the weight of the upper mold 1 and the lower mold 2 according to the hanging amount of the crane 6, and the rod 11 is mounted. Since it is connected to the stand 8, the rod 11 can be pushed down according to the hanging amount of the crane 6.

Since the lowering of the mounting table 8 is vertically downward by the guide surface 13, the lowering amounts of the plurality of rods 11 are also the same. Further, since the rod 11 is pushed by the mounting table 8 and descends, the rod 11 and the mounting table 8 need not be connected to each other.
It is possible to lower 11.

In this way, when the mounting table is lowered and the rod 11 is lowered in accordance with the hanging amount of the crane 6, the cylinder 10
Since the auxiliary cylinder 14 and the auxiliary cylinder 14 are connected by the pipe 15,
The working medium in the cylinder 10 is given a pressure generated by the weight obtained by subtracting the elastic force of the compression spring 12 from the own weight of the upper die 1, the lower die 2 and the mounting table 8, and the working medium in the cylinder 10 is forced to flow. Then, the piston 147 of the auxiliary cylinder 14 is pushed out to support the upper mold 1, and the upper mold 1 can be raised.

When the upper mold 1 is supported by the auxiliary cylinders 14 and the upper mold 1 is raised, the rods 11 are connected to the mounting table 8 and the descending amounts of the rods 11 are constant. The pressure applied inside is also constant, and since the auxiliary cylinders 14 are arranged around the guide posts 7, the force for pushing up the upper mold 1 by each auxiliary cylinder 14 moves the upper mold 1 along the guide posts 7. Since it works as a pushing force, the upper die 1 can be pushed up while maintaining the state in which the upper die 1 is guided by the guide post 7.

When the pipe 15 is arranged as indicated by the imaginary line 151, the pressure of the working medium between the cylinders 10 can be equalized even if there is a slight difference in the descending amount of the rods 11. Therefore, it becomes possible to make the pressure of the working medium moving to each auxiliary cylinder 14 uniform. Also, if the pressure of the working medium moving to the auxiliary cylinders 14 is uniform with respect to each auxiliary cylinder 14, it is possible to raise the upper mold 1 while maintaining the levelness of the upper mold 1. Even if the upper mold 1 is installed at a position other than the circumference, the upper mold 1 can be lifted while maintaining the state in which the upper mold 1 is guided by the guide post 7.

As described above, by utilizing the own weight of the upper mold 1 and the lower mold 2, the mounting table 8 is lowered according to the hanging amount of the crane 6 and the rod 11 is pushed down to move the working medium to the auxiliary cylinder 14. The upper mold 1 is lifted by supporting the upper mold 1 by protruding the piston 147, and there is no manual work there, and the own weight of the upper mold 1 and the lower mold 2 is used. Therefore, as long as the upper die 1 and the lower die 2 are placed on the placing table 8, the upper die 1 does not descend and there is no danger. Further, since the auxiliary cylinder 14 can support the upper mold 1 with the tip of the guide post 7 fitted in the upper mold 1, the upper mold 1 can be supported in a stable state.

Next, when the upper mold 1 and the lower mold 2 are lifted by the crane 6 after the repair of the upper mold 1 and the lower mold 2 is completed, since the mounting table 8 is supported by the compression spring 12,
It is possible to raise the mounting table 8 in accordance with the lifting amount, and at the same time, since the rod 11 is connected to the mounting table 8, the rod 11 is lifted and the working medium can be sucked from the auxiliary cylinder 14. That is, in this case, the crane 6
It is possible to lower the upper mold 1 substantially in proportion to the amount of hoisting.

Further, when the rod 11 is not connected to the mounting table 8, the mounting table 8 rises and the tip of the rod 11 is released, and the piston 1 of the auxiliary cylinder 14
Since the weight of the upper die 1 is applied to 47, the piston 147 is pushed down by the weight of the upper die 1, and the working medium can be moved into the cylinder 12 via the pipe 15. In this case, the lowering speed of the upper mold 1 is substantially proportional to the moving speed of the working medium, and the upper mold 1 can be lowered relatively slowly in a state independent of the hoisting speed of the crane 6.

Even when the upper mold 1 is lowered, the pressure of the working medium in each auxiliary cylinder 14 is uniform and the auxiliary cylinder 14 is arranged around the guide post 7 as in the case of raising the upper mold 1. Therefore, the upper mold 1 is attached to the guide post 7
It is possible to lower the upper mold 1 while maintaining the state of being guided to. Further, when the pressure of the working medium in each auxiliary cylinder 14 is uniform, it is possible to lower the upper mold 1 while maintaining the levelness of the upper mold 1. Therefore, even in this case, the upper mold 1 is guided by the guide post 7. Can be maintained and lowered.

[0024]

As described above in detail, according to the present invention, the upper die and the lower die of the press die for guiding the guide post to move the upper die up and down and press working with the lower die. An auxiliary cylinder that is expandable and contractible in the moving direction of the upper die is provided between them, and a mounting table on which the press die is mounted is supported by an elastic member from below, and a piston that can move in conjunction with the vertical movement of this mounting table. Since a cylinder device having a rod was provided, and the cylinder of this cylinder device and the auxiliary cylinder were connected by piping to communicate with each other, the elastic force of the elastic member due to the weight of the press mold was placed by placing the press mold on the mounting table. It is possible to push down the mounting table against the above, and push down the piston rod of the cylinder device that moves in conjunction with the mounting table by lowering this mounting table, and let the working medium in the cylinder device pass between the upper mold and the lower mold through piping. Provided between Move the auxiliary cylinder can be supported while maintaining the horizontality of the upper mold while generating upward force to the upper die. As a result, there is no manual work of the worker when raising the upper mold, and since the upper mold is supported in a stable state, there is no danger, and the press mold is simply placed on the mounting table. Therefore, the upper die can be easily raised and the press die can be easily disassembled.

Then, after the press die has been repaired, the press die is lifted by a crane to raise the mounting table by the elastic force of the elastic member, and the piston rod moving in conjunction with the raising of the mounting table moves. As a result, the working medium in the auxiliary cylinder moves into the cylinder through the pipe, the auxiliary cylinder contracts, and the upper die can be lowered along the guide post by its own weight. As a result, the upper die can be lowered in a stable state without any manual work of the operator, so there is no danger, and a simple operation such as lifting the press die with a crane is sufficient. The press die can be easily returned to the pressed state.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention in a partially longitudinal section.

FIG. 2 is a front view showing a state in which a press die is placed on a placing table and the upper die is lifted by its own weight in a partially longitudinal section.

3 is a cross-sectional view of the auxiliary cylinder in FIG.

4 is a vertical sectional view taken along the line AA of FIG.

FIG. 5 is a vertical sectional view of a conventional example.

[Explanation of sign]

 1 Upper mold 2 Lower mold 7 Guide post 8 Mounting table 10 Cylinder 11 Rod 12 Compression spring 14 Auxiliary cylinder 15 Piping

Claims (1)

[Claims] 1. A press die for guiding a guide post to move an upper die up and down and press working with a lower die, wherein the upper die is detachably provided between the upper die and the lower die. An auxiliary cylinder that is expandable and contractible in the moving direction, a mounting table on which a press die is mounted and supported by an elastic member from below, and a cylinder device having a piston rod that can move in conjunction with the vertical movement of the mounting table. A press-type disassembly assisting device comprising: a pipe for connecting the cylinder of the cylinder device to the auxiliary cylinder.