JPH0248158Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to an improvement of a hydrostatic pressurizing device.

(Prior Art) Figures 7 to 9 show a conventional hydrostatic pressurizing device 1, in which 2 is a cylindrical pressure vessel, 3 is a support frame for supporting the pressure vessel, 4 is a press frame, and 5 is a This is a pressure medium tank, and hydraulic medium is sent into the pressure vessel 2 through piping from the pressure medium tank 5 to apply hydrostatic pressure to the product.

The press frame 4 is moved on a base 7 by wheels 6, so that the press frame 4 can be freely engaged with and detached from both ends of the pressure vessel 2 in the axial direction. and,
The axial force exerted by the pressure medium inside the pressure vessel 2 is carried by the press frame 4.

In the pressure vessel 2, the pressure receiving plate 9 between the upper cover 8 and the press frame 4 at the upper end in the axial direction is moved, the upper cover 8 is raised by the thickness of the pressure receiving plate, and the press frame 4 is moved. Loading and unloading products.

The support frame 3 is joined to the outer periphery of the pressure vessel 2 at a position opposite to the outer periphery of a cylindrical protection cylinder 10 that is fitted onto the outer periphery of the pressure vessel 2, and is formed into a frame structure of shaped steel. Then, support legs 1 are attached to both ends of the support frame 3.
1 is joined, and the supporting legs 11 are joined to a base on the floor, so that the pressure vessel 2 is supported on both sides.

The pressure medium tank 5 is arranged at a distance to the side of the base 7.

(Problem to be solved by the invention) Since the core accuracy in the engaged state between the pressure vessel 2 and the press frame 4 affects the accuracy of the device itself, the pressure vessel 2 is firmly supported by the support frame 3. It is necessary to However, if the support pedestal 3 has a frame structure as in the above-mentioned conventional structure, the rigidity is lacking, and the joint 3A between the support pedestal 3 and the protection tube 10 is arc-shaped and curved in plan view as shown in FIG. As shown in FIG. 7, the height of the joint portion 3A is about 1/3 of the length of the cylinder, so if the pressure vessel 2 becomes vertically long, the pressure vessel 2 will bend or fall down, causing the press frame 4 The relative accuracy of the core is disturbed, and for this reason, the rib 3B is provided on the protective tube 10, which complicates the structure.

Furthermore, since the pressure medium tank 5 is of a separate type, the area occupied by the floor becomes large, while the upper part of the support frame 3 is a dead space.

In view of the above, the present invention increases rigidity by forming the support frame of the pressure vessel in the shape of a box-shaped container, and the protective cylinder is formed in the shape of a rectangular cylinder with a flat joint surface on the outer periphery, and By joining the rigid supporting frame and the joined part over half or more of the length of the cylinder, it is possible to achieve accurate centering accuracy and also to save space.
The purpose of the present invention is to provide a hydrostatic pressurizing device that is advantageous in terms of space.

(Means for Solving the Problems) The present invention includes a cylindrical pressure vessel 2 that can freely open and close at least one of its axial ends, a protective cylinder 30 that is externally fitted and joined to the outer periphery of the pressure vessel 2, and A support pedestal 23 is joined to the outer periphery of the cylinder 30 and supports the pressure vessel 2 on both sides, and a press frame 23 is attached to and detachable from the pressure vessel 2 and supports the axial force of the pressure medium in the pressure vessel 2. In order to achieve the above-mentioned object, the following technical measures are taken in the hydrostatic pressurizing device 21 equipped with the pump 4 and the pressure medium tank 25. That is, in the present invention, the protection tube 30 has a rectangular tube shape in which the joint surface 30A with the support pedestal 23 on the outer periphery is flat, and the support pedestal 23 is formed in the shape of a box-shaped container and has a pressure medium inside. Tank 2 to accommodate
5 and a welded portion 23A extending over half the length of the protective tube 30 or more, and the welded portion 23A of the support frame 23 is connected to the protective tube 30.
It is characterized in that it is joined to the joint surface 30A of.

(Function) Since the support pedestal 23 is shaped like a box-shaped container, the support pedestal 23 is
The rigidity of the protection cylinder 30 is increased, and the protective cylinder 30 that is fitted and joined to the outer periphery is formed into a rectangular cylinder shape with a planar joint surface 30A on the outer periphery, and this joint surface 30A and the joined part 23A of the support frame 23 are connected to each other in a cylindrical shape. By joining over half of the length, the pressure vessel 2 is firmly supported, preventing bending, falling, etc., and the accuracy of the core with the press frame 4 is good, and the hydrostatic pressurization device itself is The accuracy is also good.

The support frame 23 has a tank 2 that houses a pressure medium therein.
5, the floor space can be used more effectively than in a case where the tank is placed separately, the material for the pressure medium tank can be saved, and the piping distance to the pressure vessel 2 can also be shortened.

Further, a tank 25 for accommodating a pressure medium is provided inside the support frame 23, and the to-be-joined portion 23A of the support frame 23 is connected to a protection cylinder 30 to which the pressure vessel 2 is fitted and connected.
By joining the pressure vessel 2 to the joint surface 30A with a length of more than half the length of the cylinder, the part of the pressure vessel 2 supported by the support frame 23 is shielded from the outside air by the pressure medium on the inside and outside. Therefore, the heat radiation area of the pressure medium inside the pressure vessel 2 becomes smaller.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. Note that the same parts as in the conventional example are indicated by the same reference numerals, and the explanation thereof will be omitted, and only the differences will be explained.

1 to 9 show a hydrostatic pressurizing device 21 according to an embodiment of the present invention, and the hydrostatic pressurizing device 1 according to the conventional example described above is superimposed thereon by broken lines.

The difference from the conventional example is that first, the support frame 23 is formed in the shape of a box-shaped container to improve rigidity, and there is also a tank 25 inside to accommodate a pressure medium. A protective cylinder 30 is fitted onto the outer periphery of the pressure vessel 2.
The inner circumference is a circumference that fits the outer circumference of the pressure vessel 2, but the outer circumference is a rectangular prism shape, and the support frame 2
A joint surface 30A with the jointed portion 23A of No. 3 is a flat surface. The jointed portion 23A of the support pedestal 23 is joined to the joint surface 30A on the right side in FIG.
It is supported on a base 7 via support legs 31. Further, the lower end of the left side of the protection tube 30 in FIG. 1 is supported on the base 7 via a support leg 31.

According to the above embodiment, since the support frame 23 is shaped like a box-shaped container, the rigidity is greater than that of a conventional frame structure, and the protection tube 30 has a rectangular tube shape and its planar joints Support frame 23 on surface 30A
The pressure vessel 2 is firmly supported because the joined portions 23A are joined and the height of the joint is more than half the length of the cylinder. Therefore, pressure vessel 2
When loading and unloading products into the press frame 4
Even if they are connected to and removed from the pressure vessel 2, the core accuracy of both 2 and 3 is unlikely to be disturbed and can be maintained well, and the accuracy of the hydrostatic pressurizing device 21 itself can also be made good.

Furthermore, since the support frame 23 has a tank 25 for storing the pressure medium inside, there is no need for a separate pressure medium tank 5 as in the conventional case, and this makes effective use of floor space. be able to. Moreover, the material for the pressure medium tank is saved, and the distance of the pressure medium piping to the pressure vessel 2 is shortened, so that costs can be reduced.

Furthermore, since the joined part 23A of the support frame 23 has a height of more than half of the length of the cylinder, the part of the pressure vessel 2 supported by the support frame 23 is shielded from the outside air with pressure medium on the inside and outside. As a result, the heat radiation area of the pressure medium inside the pressure vessel 2 is reduced, and thermal efficiency can be improved.

Further, in the above embodiment, the protection tube 30 of the pressure vessel 2
The lower end of the left side in FIG. 1 is supported on the base 7 by a support leg 31. This is the protective tube 30
Because it has a rectangular cylindrical shape, its lower end can be directly attached to the support leg 3, compared to the conventional cylindrical shape.
This is because it is easy to support. This results in
The pressure vessel 2 can be supported at both ends without joining the support frame 3 to the left side of the protection tube 10 in FIG. 1 as in the conventional case, and the occupied floor space can be reduced.

4 to 6 relate to a second embodiment of the present invention, and the difference from the above embodiment is that the fourth embodiment of the protection tube 30
The jointed portion 23A of the support frame 23 is joined to the joint surface 30A on the left side in the figure, and the support frame 2
3 is supported on the base 7 via support legs 31. The other configurations are the same as those of the above embodiment.

The pressure vessel 2 may be of a lower end that can be opened and closed to take products in and out, and the press frame 4 may be of a so-called pivoting type that is swingable about its vertical axis and engages and disengages from the pressure vessel 2.

(Effects of the invention) According to the hydrostatic pressurizing device according to the invention, the outer periphery of the protective cylinder that is fitted and joined to the outer periphery of the pressure vessel is shaped like a rectangular cylinder with a flat joint surface, and Since the pedestal is formed in the shape of a box-shaped container and the jointed part of the support pedestal is joined to the joint surface, the support pedestal has greater rigidity than a conventional frame structure, and the pressure vessel The pressure vessel and the press frame are firmly supported on both sides, and the accuracy of the centering between the pressure vessel and the press frame can be improved, and the accuracy of the hydrostatic pressurizing device itself can also be improved. In addition, the joined part of the support frame has a height of more than half the length of the cylinder and is joined to the joint surface of the protection cylinder, so even if the pressure vessel is long, it can be supported on both sides to prevent it from falling over. This allows for good core accuracy.

Furthermore, since the support frame has a tank for accommodating the pressure medium therein, it is possible to effectively utilize floor space and reduce costs by saving pressure medium tank material and piping material. As mentioned above, the part of the pressure vessel supported by the support frame extends over half the length of the cylinder, so the pressure medium is on the inside and outside and is shielded from the outside air, so the heat dissipation area of the pressure medium inside the pressure vessel becomes small. This can improve thermal efficiency, which is advantageous when used as a warm isostatic pressurizing device.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a hydrostatic pressurizing device according to a first embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a plan sectional view thereof, and Figs. 4 is a side sectional view of the hydrostatic pressurizing device, FIG. 5 is a front view thereof, FIG. 6 is a plan sectional view thereof, and FIGS. 7 to 9 are related to the conventional example. FIG. 7 is a side sectional view of the hydrostatic pressurizing device, FIG. 8 is a front view thereof, and FIG. 9 is a plan sectional view thereof. 2...Pressure vessel, 4...Press frame, 21
... Hydrostatic pressure device, 23 ... Support frame, 23A
...Part to be joined, 25...Tank for pressure medium, 30...
...Protection tube, 30A...joint surface.

Claims (1)

[Claims for Utility Model Registration] A cylindrical pressure vessel 2 whose at least one axial end can be opened and closed, a protection tube 30 fitted onto the outer periphery of the pressure vessel 2, and a protection tube 30 bonded to the outer periphery of the protection tube 30. a support pedestal 23 that supports the pressure vessel 2 on both sides; a press frame 4 that can be freely engaged with and detached from the pressure vessel 2 and that carries an axial force due to the pressure medium in the pressure vessel 2; In the hydrostatic pressurizing device 21 equipped with a medium tank 25, the protection tube 30 has a rectangular tube shape with a flat surface 30A connecting the outer circumference with the support pedestal 23, and the support pedestal 23 has a box-shaped container shape. The support frame 23 has a tank 25 formed therein to accommodate a pressure medium therein, and a welded part 23A extending over half the length of the protective cylinder 30 or more.
3A is joined to the joint surface 30A of the protection tube 30.