JPH02187299A - Pressing apparatus - Google Patents

Abstract

PURPOSE:To reduce necessary rotating power without needing space in circumference of a pressure vessel by setting the pressure vessel at inside of a frame and supporting center position in longitudinal direction of the pressure vessel as rotatable. CONSTITUTION:Upper and lower covers 2, 3 are fitted to the cylindrical pressure vessel 1 and a material 5 to be formed is charged therein. This is set to the inside of the rectangle-shaped frame 4, and the inside of the pressure vessel 1 is pressurized while pressing the upper and lower covers 2, 3 with this to compact the material 5 to be formed. Then, almost center position in the longitudinal direction of at least one side either the pressure vessel 1 or the frame 4 is supported as rotatable, and the frame 4 and the pressure vessel 1 are constituted as mutually rotatable. By this method, the frame or the pressure vessel can be supported in sufficiently stable.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of industrial application" The present invention is a press device, particularly a cold or hot isostatic press device, etc., in which a pressure vessel is placed inside the frame and the pressure is removed by the frame. The present invention also relates to a press device configured to perform pressing while pressing from the outside.

[-Prior Art] As an example of this type of press apparatus, a conventional and commonly used cold isostatic press apparatus is shown in FIGS. 4 and 5. In the figure, reference numeral 1 is a cylindrical pressure vessel, 2 and 3 are devices installed at both ends of the pressure vessel 1, a lid and a downstream end, and 4 is a rectangular frame. After storing the elbow product 5 to be formed in the container 2H1 and coating the upper cover 2 and downstream 3, and placing the pressure vessel 1 inside the frame 4, pressurize the inside of the pressure vessel 1 from the force 1 pressure hole 6. By injecting a medium (for example, water) 7 at high pressure, the pressure is applied to the molded product 5 to perform compression molding.

The frame 4 described above is for receiving the reaction force of the pressurizing force applied inside the pressure vessel l by pressing the top cover 2 and the bottom cover 3 from the outside during pressurization.
It is installed at the platform 87 and is capable of horizontal movement in directions toward and away from the pressure vessel 1, as shown in FIG.

In this apparatus, the pressure vessel 1 is supported by a support device (not shown) and placed at a fixed position, and after the molded product 5 is housed inside the pressure vessel 1, the frame 4 is moved to separate the pressure vessels from each other. The upper M2 and the lower lid 3 are pressed by the frame 4 while pressing is performed. When the pressing is completed, the frame 4 is retreated to the side of the pressure vessel 1, the lid 2 of the pressure vessel 1 is removed, and the molded product 5 is removed.
It is designed to take out.

Further, as another conventional cold isostatic press apparatus, one shown in FIG. 6 is also used. This connects one side of the flask l, 4 to the structure 9 with the shaft 10 and the bearing 11.11.
By rotating the frame 4, the frame 4 can be positioned outside the pressure vessel 1 and retracted to the side of the pressure vessel.

``Problem to be Solved by the Invention'' By the way, in the apparatus shown in FIGS. 4 and 5, the apparatus for moving the frame 4 is large-scale, and especially when the pressure vessel l is long, the frame must be moved. Since the height dimension is also large, a sufficient support mechanism or the like is required to prevent the frame 4 from falling when moved, which increases equipment costs.

Furthermore, since a sufficient space is required around the pressure vessel 1, the space factor is also not good.

In addition, since the device shown in FIG. 6 has a so-called cantilever structure in which only one side of the frame 4 is supported, especially when the frame 4 is large and heavy, the support 10 and The strength of the bearing 11 must be sufficiently increased, and the power required to rotate the frame 4 is also large, so it is not very effective.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a press device with a simpler structure and an excellent space factor.

``Means for Solving the Problems'' The present invention provides a cylindrical pressure vessel that houses a molded product inside and has a lid at its end, and arranges it inside a rectangular frame. In the press equipment configured to compress the molded product by pressurizing the inside of the pressure vessel while suppressing the flow from the outside by an end portion, the pressure vessel is disposed inside the frame, and the pressure is Yong? :; Alternatively, the frame and the pressure vessel are configured to be relatively rotatable by rotatably supporting at least one of the frames at a substantially central position in the longitudinal direction.

"Function" In the press apparatus of the present invention, during pressing, the end of the frame presses the lid of the pressure vessel from the outside, but prior to pressing and after completion of pressing,
The end of the frame is retracted from the end of the pressure vessel by rotating the frame relative to the pressure vessel in a proportion of x·i, and in this state, the lid is removed and the molded product is taken in and out.

"Example" Hereinafter, an example in which the present invention is applied to a cold isostatic press apparatus will be described with reference to the drawings.

1 and 2 show a schematic configuration of a cold isostatic press apparatus according to an embodiment of the present invention, and the same components as those of the conventional apparatus are given the same reference numerals and explained. is omitted.

In the apparatus of this embodiment, the pressure vessel l is shown as 1. The frame 4 is supported by a support mechanism that does not have a fixed position and is arranged at a fixed position, and the frame 4 is rotatably supported around the frame 4. That is, the pressure vessel l is arranged so that its axis is vertical, and the frame 4 is arranged on the outside thereof, and as shown in FIG. 20a, 20b are fixed, and their axes 20a, 20b are connected to the base 21.21.
They are each rotatably supported on bearings 22, 22 fixed above.

Then, one shaft 20a is rotated by a rotary drive rA23 consisting of, for example, an electric motor or a hydraulic cylinder.
By rotating the frame 4, the frame 4 is rotated in a vertical plane.

In the apparatus configured as described above, when the frame 4 is vertically arranged as shown by the two-dot chain line in FIGS. Therefore, by pressing in this state, the frame 4 can press the lids 2.3 from the outside.

Then, prior to pressing and after the pressing is completed, the frame 4 is moved vertically (
In other words, by rotating the frame 4 by a predetermined angle (with respect to the axis of the pressure vessel 1), the upper and lower parts of the frame 4 are retracted by a short distance from the upper cover 2 and lower cover 3 of the pressure vessel 1, respectively. This means that the upper lid 2 can be attached and detached and the molded product 5 can be taken in and out without any trouble.

As explained above, in the apparatus of this embodiment, since the frame 4 is configured to rotatably support substantially the central portion in the longitudinal direction and rotate with respect to the pressure vessel 1, the frame 4
By only slightly rotating the lid 2, the lid 2 can be attached and detached, and the molded product 5 can be taken in and out without any trouble. In this device, the cart 8 is different from the conventional device shown in FIGS. 4 and 5 in which the frame 4 is moved horizontally.
There is an advantage that the equipment cost can be reduced and the space required around the pressure field %l is small because there is no need to take into account the overturning of the frame 4.

In addition, both sides of the frame 4 are connected to a pair of shafts 20a and 20b.
Since the frame 4 is supported by a cantilever, it is advantageous in terms of the strength of the shaft and bearings compared to the conventional device shown in FIG. However, there are also advantages in that the stability of the frame 4 is improved and the power required to rotate the frame 4 is also small.

Note that the attachment of the shafts 20a and 20b to the frame 4 may be difficult if the position of the rotation center of the frame 4 is moved significantly from the center position of the frame 4.
This is not preferable because the rotation angle of the pressure vessel 1 becomes large and the space that must be secured on the sides of the pressure vessel 1 becomes large.

Further, in the above embodiment, the pressure vessel 1 is arranged at the normal position and the frame 4 is rotated, but on the contrary, as shown in FIG. 3, the frame 4 is fixed at the normal position. By placing the pressure vessel 1 in
is configured to be rotatable inside the frame 4,
With the pressure vessel 1 horizontal, attaching and detaching the lid 2 and molded product 5
It may also be possible to take in and out. In this way, the Mfm removal Ox space and the space for loading and unloading molded products, which needed to be secured on the side of the pressure vessel 1 in the case of the above embodiment, can be secured on the side of the pressure vessel 1. This is suitable for use in cases where space in the height direction is limited.

Furthermore, not only either one of the frame 4 or the pressure field St, but both of them may be rotatable, and instead of rotating in a vertical plane, they may be rotated in a horizontal plane. In short, the frame 4 may be configured to be rotatable relative to the pressure vessel l.

Furthermore, the present invention is applicable not only to a cold isostatic press apparatus, but also to a hot isostatic press apparatus as long as it is of a type in which a pressure vessel is arranged inside a frame and pressing is carried out while pressing the lid of the vessel with the frame. It goes without saying that it can be similarly applied to other presses.

"Effects of the Invention" As explained in detail above, according to the present invention, the frame and the pressure vessel are connected by rotatably supporting at least one of the pressure vessel and the frame at approximately the central position in the longitudinal direction. Because it is configured to be relatively rotatable, it is possible to support the frame or pressure vessel with sufficient stability despite its simple structure, and it is possible to move the end of the frame away from the end of the pressure vessel by simply rotating the frame or pressure vessel slightly. Since they can be evacuated, they do not require much space around the pressure vessels, and the power required to rotate them can also be reduced, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a schematic configuration of a press device according to an embodiment of the present invention, FIG. 2 is a side sectional view thereof, and FIG. 3 is a side view showing a schematic configuration of a press device according to another embodiment of the present invention. FIG. Fig. 4 shows an example of a conventional press device, of which (a) is a front view, (b) is a side sectional view, Fig. 5 is a side sectional view for explaining its operation, and Fig. 6 is a side sectional view. FIG. 2 is a plan view showing another conventional press device. 1...Pressure vessel, 2...Top lid, 3...
... Lower lid, 4 ... Frame, 5 ... Molded product, 6 ... Pressure hole, 7 ... Pressure medium, 20 a, 20 b--shaft, 22--bearing, 23.
...Rotary drive source. Funeral Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A cylindrical pressure vessel containing a molded product inside and a lid attached to the end is placed inside a rectangular frame, and the inside of the pressure vessel is pressed while pressing the lid from the outside with the end of the frame. In the press equipment configured to compression-mold the molded product by applying pressure, the pressure vessel is disposed inside the frame, and the pressure vessel is located approximately in the longitudinal center of at least either the pressure vessel or the frame. A press device characterized in that a frame and a pressure vessel are configured to be relatively rotatable by being rotatably supported in position.