JPS5914006Y2 - Extrusion press container moving device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a moving device for a container device of an extrusion press, and a main object thereof is to enable easy exchange of containers while maintaining good press accuracy.

In a metal extrusion press that obtains an extruded product of a desired shape and size from a metal billet through a die, a container device including a container having a billet receiving hole in the center is moved back and forth in the press direction through the expansion and contraction movement of a telescoping cylinder device. It is movable.

Conventionally, the container moving cylinder device has generally been arranged obliquely with respect to the center of the press, and therefore, there is no problem with container replacement work;
Because the distance between the column and the cylinder device, which are part of the press frame and are arranged diagonally, is different, the distortion of each part of the press platen becomes uneven when the load is applied during extrusion.
In addition, the different elongations of the columns have an adverse effect on the press accuracy, which in turn causes undesirable problems such as the durability of the press equipment and uneven thickness of the extruded product.

On the other hand, the containers of container equipment need to be replaced due to the size of the billet, cleaning, lifespan, etc., but this work requires considerable effort because the containers are heavy and bulky. It was hard labor and required time and effort.

This invention was devised in view of the above-mentioned circumstances, and is as follows:
Two embodiments applied to an indirect extrusion press will be described in detail with reference to the accompanying drawings.

In addition to the illustrated indirect extrusion press, the present invention is also applicable to an intermediate frame type indirect extrusion press.

1 to 6 show a first embodiment of the present invention, in which 1 is a press bed, and sliding guide devices 2 that are long in the press direction are provided on the left and right sides of the press bed.

If the press direction (left side in Figure 1) is the front, and the opposite direction is the rear, a press platen 3 is erected in front of the press bed 1, and the press bed 1 faces it.
A main cylinder frame (not shown) is erected and fixed at the rear of the top, and the press platen 3 and the main cylinder frame are firmly connected by mutually parallel columns 4 arranged diagonally. It constitutes a frame.

The main cylinder frame is provided with an extrusion force generating device composed of a main cylinder and a main ram oil-tightly fitted to the main cylinder, and the crosshead 5 is driven by the generating device.

As shown in FIG. 5, the crosshead 5 has a pair of left and right shoe devices 6 that move on the sliding guide device 2, and side cylinder devices 7 on both sides that allow the head 5 to move forward without load. Further, in front of the head 5 and above the center of the press, a pressurizing stem 8 is connected and extends forward.

The press platen 3 has a through hole 3A at its center, and a long cylindrical die stem 10 is provided through a pair of upper and lower die stem guides 9 provided on the rear end surface.
extends rearward, has a die 11 at its extending end, and substantially corresponds front and rear with the pressurizing stem 8 in a coaxial relationship.

The die stem 10 is movable and fixed in a direction perpendicular to the press direction between the center of the press and the outside of the press via a motor 12, a screw feeder 13, etc. shown in FIG.
is the sliding guide part.

Further, a spacing block 14 is provided on the die stem guide 9 in parallel with the die stem 10, as shown in FIG. The die stem 10 is selectively positioned at the center of the press during extrusion, and the spacer block 14 is alternatively located at the center of the press during Zen billet processing. has a U-shaped or V-shaped groove portion 14A that opens upward.

Of course, the drive means for the die stem and the spacing block may be a fluid cylinder device, and if they are connected, only one drive means is required.

Container device 1 between press platen 3 and crosshead 5
The container device 17 consists of a container 19 having a billet receiving hole 18 at its center, and a container holder 20 that surrounds and detachably supports the container. 19 is fitted and inserted, and both are assembled together via a stepped portion 22 and a detachable stop ring 23.

As shown in FIGS. 3 and 4, the container holder 20 is provided with a pair of left and right shoe devices 24 in an overhanging manner, and these shoe devices 24 are engaged with the sliding guide device 2 to provide guidance and support in the press direction. has been done.

The container device 17 moves back and forth in the press direction,
In the first embodiment, a lower pair of container moving cylinder devices 25 are provided in front of the container device 17 at vertically symmetrical positions with respect to the center of the press, and a pair of upper and lower container hydraulic coupling cylinder devices 26 are provided behind the container device 17 in the press. The piston end 28A of the container moving cylinder device 25 is installed in a vertically symmetrical position with respect to the center of the container holder 20.
The piston end 30A of the container hydraulic coupling cylinder device 26 is connected to the piston end 30A of the container hydraulic coupling cylinder device 26 by a pin body 32 so that it can be inserted and removed freely.

That is, the cylinder tube 27 of the container moving cylinder device 25 is fixed to the press platen 3 on a vertical plane above the center of the press, and the piston 28 is fitted therein in an oil-tight manner, and its end 28A is screwed to the container holder 20. Meanwhile, the container hydraulic coupling cylinder device 26
The cylinder tube 29 was fixed to the crosshead 5 via an arm on a vertical plane above the center of the press, and the end 30A of a piston 30, which was oil-tightly fitted to the tube 29, was connected by a pin body 32 that can be freely inserted and removed. It is.

A fitting recess 20A is formed in the container holder 20, into which the end 30A is fitted, and when the end 30A is fitted, a pin insertion hole 30B extending radially through the fitting recess 20A and a pin insertion hole in the holder 20 are formed. 20B are configured to match, and the pin body 32 is configured to be fitted into this.

In a desirable example of this embodiment, the pin body 32 has an end pre) 32
A is fixed, and the pin body 32 can be freely inserted and removed through the expansion and contraction movement of a cylinder device 33 built into the container holder 20.

In the embodiment shown in FIGS. 1 to 6, the billet accommodated in the billet receiving hole 18 of the container device 17 is moved relative to the die stem 10 and the container 19 so that the billet does not reach the stem 10.
The container device 17 is extruded through the die 11 by applying an extrusion force such that the container 19 covers the container device 19, and the container device 17 is guided along the sliding guide device 2 by its shoe device 24.

During this extrusion, a huge load from the extrusion force generating device acts on the press platen 3, container device 17, cross head 5, etc., causing distortion of these. Device 1
A pair of upper and lower cylinder devices 25 and 26 arranged before and after 7.
are provided at vertically symmetrical positions with respect to the center of the press, so the distortion is so-called equal in each part, and the press accuracy does not deteriorate here.Also, even if the column 4 is extended by the amount of extrusion force, it is also uniform. This means that the press precision will not deteriorate due to elongation.

On the other hand, the cylinder devices 25 and 26 are connected to the container device 17.
If the containers are arranged vertically symmetrically with respect to the center of the press at around 0, it will be a hindrance to replacing the containers 19 in the container device 17, but this can be dealt with as follows.

That is, in order to clean the container 19 outside the press or to remove it to accommodate billet sizes, first remove the stop ring 23 and remove the container moving cylinder device 25.
The container holder 20 is retracted as shown in FIG. The facing length of the rear end surface and the end 30A is set to be equal to or longer than the container axis length, and the container 19 pulled out from the fitting hole 21 of the holder 20 is suspended and transported as shown by arrow F using a lifting machine such as a lane running outside the figure. It is.

Further, the container 19 can be reset to the holder 20 by the reverse operation to that described above.

Although the embodiment described above is the first embodiment, the present invention can also follow the second embodiment shown in FIGS. 7 and 8.
In this embodiment, parts and members common to those in the first embodiment are indicated by common symbols, and only the differences will be explained below.

In the second embodiment, a stop ring 23 is provided at the rear end when the container holder 20 and the container 19 are assembled, and the piston end 30A of the container hydraulic coupling cylinder device 26 is screwed to the container holder 20, and the container moving cylinder The piston end 28A of the device 25 is connected to the container holder 20 by a pin body 32 which can be freely inserted and removed.

In this embodiment as well, fluctuations in press precision due to the load during extrusion, elongation of the column 4, etc. can be made uniform without any difference.On the other hand, when replacing the container 19, the front side of the container holder 20 can be fixed as shown in FIG. Can be implemented.

In addition, in FIG. 8, the die stem 10 has been removed from the press.

In the above two embodiments, the piston ends of the lower container moving cylinder device 25 and the container hydraulic coupling cylinder device 26 are connected by inserting and removing a pin body, and are connected by screws. This can be done by providing the device 25, 26, and the lower cylinder device 25, 26 can also follow a screw connection.

As detailed above, according to the present invention, the cylinder devices placed before and after the container device are installed vertically symmetrically with respect to the center of the press, which results in uniform distortion during load during extrusion, and also prevents column expansion and contraction. This makes it possible to maintain good press accuracy, and while having this advantage, when replacing the container, the upper side of one of the piston ends can be attached and detached using a pin body, so it is not heavy. It has the advantage of being easy to replace without requiring strenuous labor.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the press side of the first embodiment, Fig. 2 is a side sectional view at the time of container exchange, Fig. 3 is a line C-C in Fig. 1, Fig. 4 is a line C-C in Fig. 1, 5 is a cross-sectional arrow view taken along line C-C in FIG. 1, and FIG. 6 is a cross-sectional arrow view taken along line C-C in FIG. 1, which corresponds to that in FIG. 7. FIG. FIG. 8 is a sectional side view of the press when the same container is replaced. 1... Press bed, 3... Press platen, 4... Column, 5... Cross head, 10... Die stem, 17...・・・・・・
・Container device, 19...Container, 20...
Container holder, 25 Container moving cylinder device, 26 Container coupling cylinder device, 32 Pin body.

Claims (1)

[Scope of utility model registration request] In an apparatus in which a container device having a billet receiving hole is removably fitted into its holder and moved back and forth in the upward direction, a container moving cylinder device and a container are placed in front and behind the container device in the upper and lower directions with respect to the center of the press. A hydraulic coupling cylinder arrangement is arranged, wherein at least an upper piston end of one of the cylinder arrangements is threadedly connected to a container holder of the container arrangement, and at least an upper piston end of the other cylinder arrangement is screwed to a container holder of the container arrangement. A container device moving device for an extrusion press, characterized in that it is connected to a holder by a pin body that can be freely inserted into and removed from the holder.