JPH031120B2 - - Google Patents

Description

Detailed Description of the Invention The present invention provides a press characterized by a mechanism that automatically adjusts pressurizing water in the pressure vessel to a full state when a material to be processed is stored in the pressure vessel and the pressure vessel is closed with a lid. This invention relates to a frame-type hydrostatic pressurizing device.

In conventional hydrostatic pressurizing equipment, press frame type hydrostatic pressurizing equipment is generally used for large-scale equipment or when productivity is required. The process of storing the material to be processed in the taken out pressure vessel, the closing process of tightly fitting the top cover to the pressure vessel, the process of storing the sealed pressure vessel within the window frame of the press frame, and the process of storing the material to be processed in the pressure vessel. Processing process in which hydrostatic pressure is applied to the material and then the hydrostatic pressure is removed; process in which the pressure vessel is removed from the window frame; opening process in which the top cover of the pressure vessel is removed; Another type has a structure in which the top cover is opened and closed within the window frame, but in any case, hydrostatic pressure is applied inside the pressure vessel within the press frame. The processing process is designed to prevent the upper lid from coming off, and there are two methods for storing the pressure vessel in the window frame and removing it from the window frame: one method is to fix the press frame side and move the pressure vessel side, and the other is to move the pressure vessel side. It can be roughly divided into two types: a fixed type and a type in which the press frame side is moved.

However, in the conventional press frame type hydrostatic pressurizing apparatus, when the material to be treated is stored in the pressure vessel and the lid is applied to close the vessel, a mechanism is used to adjust the amount of pressurizing water in the pressure vessel. As a result, the amount of pressurized water in the pressure vessel is insufficient, resulting in a situation where pressurized water is supplied within the press frame while gas is still sealed, and the pressure inside the pressure vessel is significantly reduced by the sealed gas, resulting in damage. The compression molding process of the treated material may be insufficient, so in conventional equipment, the amount of pressurized water inside must be checked and replenished when the material to be treated is stored in the pressure vessel and the lid is applied and closed. This was a difficult point that could not be automated, causing a drop in productivity.

The present invention was developed in order to solve the above-mentioned difficulties in the conventional press frame type hydrostatic pressurizing apparatus, and it is an upper part of a pressure vessel that stores a material to be processed and compresses it by hydrostatic pressure. a drain port provided in the pressure vessel, a water supply/drain hole provided in the lid for opening and closing the pressure vessel, a flow switch attached to the drain port, an automatic switching valve controlled by the flow switch, and the automatic switching valve. It is characterized in that it is equipped with an automatic water level adjustment mechanism for adjusting the water level in the pressure vessel, which is made up of a water supply and drainage pipe that is connected and inserted into the water supply and drainage hole. An object of the present invention is to provide a press frame type hydrostatic pressurizing device that is equipped with a mechanism that can automatically adjust the internal pressurizing water to a full state when a material is stored and closed with a lid.

The present invention has the above-described structure, and at the same time as the operation of storing the material to be treated in the pressure vessel and closing the upper part with a lid, the water level is automatically adjusted when the pressure water in the pressure vessel is insufficient. The flow switch of the adjustment mechanism switches the automatic changeover valve, and pressurized water is automatically replenished into the pressure vessel through the water supply/drainage pipe and the water supply/drainage hole of the lid, and water is drained from the drain port. Since the pressure vessel is automatically shut off, the interior is always kept full of water at the same time as the pressure vessel is closed, eliminating any gas entrapment, and ensuring a predetermined high hydrostatic pressure by supplying pressurized water inside the pressure vessel in the next step. The compression molding pressurization of the processed material is improved, and the automatic water level adjustment mechanism that adjusts the water level in the pressure vessel makes it extremely easy to automate the entire device.
Cycle time is significantly shortened, and productivity and reliability can be significantly improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. An embodiment of the present invention is shown in FIGS. 1A, B to 4, and in FIGS. 1A and B, 1 is an upright cylindrical pressure vessel, with an upper part for storing and taking out the material to be treated. A lid 4 having an opening 2 and a packing 3
is tightly fitted into the upper opening 2 to maintain the inside of the pressure vessel 1 at a predetermined high pressure, and a drain port 14 is provided in the upper side wall to allow the internal pressurizing water to overflow. A water supply and drainage hole 4b is provided in the center of the lid 4.

Reference numeral 5 denotes a press frame, which is approximately in the shape of a window frame and has an inner surface corresponding to both the upper and lower end surfaces of the pressure vessel 1, and holds the pressure capacity 1 and presses the pressure vessel 1 into the window frame of the press frame 5. A fluid pressure cylinder 6 is attached to the pressure vessel 1 for housing the pressure vessel 1 inside the pressure vessel 5' and taking it out to the side, and a support stand 8 for the material to be treated, that is, a container 7 for the material to be treated is attached to the outside of the pressure vessel 1. Furthermore, a device for opening/closing the pressure vessel 1 and storing/retrieving the processed material (processed material container 7) is provided.

Furthermore, as shown in the figure, the lid 4 is provided with a hanging tool 12 on the lower surface side that hooks a connecting tool 13 on the material container 7 to suspend the container 7.
3. The hanging tool 12 is not limited to what is shown in the drawings, and may be formed by various mechanisms, and may also be a mechanism for actively gripping (specific examples are omitted).

Furthermore, the device for opening/closing the pressure vessel and storing/retrieving the material to be processed (container for the material to be processed) is a second device.
As shown in FIGS. 3 and 3, a gripper 9a for the lid 4 is rotatably mounted in a frame a, and the gripper 9a is held in place by a pin 9c at the tip of a lever 9b protruding from the frame a. Fluid pressure cylinder 9d shown in Figure 1B
pin 9 by the same hydraulic cylinder.
c. The gripping tool 9a is adapted to be rotated by a predetermined angle via the lever 9b, and the lower end of the gripping tool 9a is fitted into a cavity provided on the upper surface side of the lid 4, and the gripping tool is gripped by the fluid pressure cylinder 9d. A claw 9f is provided on the outer periphery of the lower end of the gripper 9a by rotating the gripper 9a.
A lid gripping mechanism 9 that engages with or disengages a claw 4a provided in the cavity of the lid 4 to removably grip the lid 4.
Further, the lid gripping mechanism 9 is guided by a guide 10 so as to be able to move up and down on the pressure vessel 1 on the left side of the press frame 5 in the drawing, and is driven up and down by a fluid pressure cylinder 11. It's summery.

In addition, 17 in the figure is a water supply and drainage pipe for supplying and discharging water into the pressure vessel 1, and a cover 9 is provided on the upper side of the frame a.
It is fixed on the e side and passes through the gripping tool 9a, and the lower end is inserted into the water supply and drainage hole 4b of the gripped lid 4,
A packing 17b is provided, and the upper end is the connection port 17a.
It's getting old.

Furthermore, as shown in FIG. 1A, a flow switch 15 is provided at the drain port 14 provided on the upper side wall of the pressure vessel 1 to detect when the pressurizing water in the pressure vessel 1 is drained due to overflow. As shown in FIG. 4, the connection port 17a of the water supply and drainage pipe 17 disposed in the lid gripping mechanism 9 and inserted into the water supply and drainage hole 4b of the lid 4 is connected to an automatic switching valve 22 (three-way valve) via a communication pipe 20. , further connected to the water supply pump 24 and the pressurizing water tank 25, and the automatic switching valve 2 described above.
2 is automatically switched by a signal from the flow switch 15, and when the pressurized water in the pressure vessel 1 is not drained through the drain port 14 when the material to be treated is stored in the pressure vessel 1. The communication pipes 20 and 23 are connected to each other, and the pressurized water tank 25 is connected to the water supply tank 24.
Pressurized water is replenished into the pressure vessel 1 through the communication pipes 20 and 23, the water supply and drainage pipe 17, and the water supply and drainage hole 4b, and when the overflow starts to be drained from the drain port 14, it is switched by the signal from the flow switch 15. The valve 22 is automatically switched so that the pressurized water from the communication pipe 23 flows out to the tank 27 side through the branch pipe 26, and the flow switch 1
5. An automatic water level adjustment mechanism that automatically adjusts the water level of pressurized water in the pressure vessel 1 by the switching valve 22 and the water supply/drainage pipe 17.

Further, as shown in FIG. 1A, a pressure water injection pipe 18 having a built-in pressure water injection nozzle 16 in the lower part is provided on the upper side of the press frame 5, and the pressure water injection nozzle 16 is connected to a fluid pressure not shown in the figure. The vertical movement operation is enabled by the fluid pressure supplied from the supply source to the flow path a or b, and when it moves downward, it is inserted into the water supply and drainage hole 4b of the lid 4, and pressurized water can be supplied into the pressure vessel 1. It's becoming like that.

The illustrated embodiment has the above-described structure, and its operation will be explained with reference to FIGS. 5A to 5F. As shown in FIG. The container 7 containing the material to be processed, that is, the container 7 containing the material to be processed, is placed on the support stand 8.
As shown in the figure, the lid gripping mechanism 9 that grips the lid 4 is lowered by the fluid pressure cylinder 11, and the hanging tool 12 on the lower surface of the lid 4 is engaged with the connecting tool 13 on the material container 7 to attach the lid 4. Then, as shown in FIG. 5B, the lid gripping mechanism 9 is moved upward by the fluid pressure cylinder 11, so that both the lid 4 and the container 7 are positioned upwardly.

Furthermore, as shown in FIG. 5C, the pressure vessel 1 is moved to the left side in the figure by the fluid pressure cylinder 6, and is moved from the window frame 5' to the side of the press frame 5, that is, directly below the suspended processing material container 7. position.

Furthermore, when the lid gripping mechanism 9 is lowered as shown in FIG. It becomes closed. During the descent, the water level of the pressurized water already stored in the pressure vessel 1 gradually rises, and when it approaches the end, it is drained from the drain port 14 as excess water, and the drained water is turned on by the flow switch 15. detected. When the pressurizing water in the pressure vessel 1 is too low to be drained from the drain port 14 when storing the material to be treated, the automatic changeover valve 22 switches the communication pipes 23 and 20 into communication based on a signal from the flow switch 15. Since it is automatically switched, pressurizing water is replenished into the pressure vessel 1 from the pressurizing water tank 25 by the water supply pump 24 through the communication pipes 23, 20, the water supply/drainage pipe 17, and the water supply/drainage hole 4b. When the pressurized water inside the pressure vessel 1 starts to be discharged from the drain port 14, the flow switch 15 causes the automatic switching valve 22 to cut off the communication to the communication pipe 20 side, and the water is discharged to the tank 27 side via the branch pipe 26. Therefore, the inside of the pressure vessel 1 is automatically always filled with water and gas is removed.

Next, as shown in FIG. 4E, the lid gripping mechanism 9 is further lowered a little, and the lid
can be tightly fitted to achieve a completely closed state, and at this time, air and excess water remaining directly under the lid 4 are discharged to the water supply and drainage pipe 17 side, so that no gas is eliminated. (At this time, the drain port 14 is closed with the lid 4.) When the storage of the material to be treated in the pressure vessel 1 and the closing operation using the lid 4 are completed, the replenishment of pressurized water is completed.

Furthermore, the fluid pressure cylinder 9d (see FIG. 1B)
At this point, the gripping tool 9a is slightly rotated via the pin 9c and the lever 9b to disengage the claws 9f and 4a, and the lid gripping mechanism 9 is raised to remove the lid 4.

When the above preparatory operations are completed, the pressure vessel 1 is accommodated in the window frame 5' of the press frame 5 by the fluid pressure cylinder 6 as shown in FIG. 4b, pressure water is supplied from the pressure water nozzle 16 side into the pressure vessel 1, high hydrostatic pressure is applied to the material to be treated in the material container 7, and compression molding of the material to be treated is performed. You can apply pressure.

After the above compression molding process, the pressure water in the pressure vessel 1 is discharged from the water injection pipe 8 side by an appropriate mechanism, and the pressure vessel 1 is moved from the state shown in FIG. 4F to the state shown in FIG. 4E, and the window frame 5' The lid 4 is gripped by the lid gripping mechanism 9 and the processed material can be held at the same time, and then the lid 4 is removed by the reverse stroke shown in FIG. 4 at approximately the same time as the opening operation. Processed material container 7
can be removed, and the operation can be repeated.

Therefore, according to the embodiment, the material to be treated, that is, the container 7 to be treated is housed in the pressure vessel 1, and at the same time as the lid 4 is closed, the pressure vessel 1 is constantly pressurized by the automatic water level adjustment mechanism. The water can be filled with water, there is no residual gas, and the high hydrostatic pressure applied to the pressure vessel 1 during the next processing is always maintained at a constant predetermined pressure, allowing compression molding of the material to be processed. The results are extremely good, and the cycle time is significantly shortened, making it possible to automate the entire device, significantly improving productivity and reliability.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

FIG. 1A is a longitudinal sectional side view showing one embodiment of the present invention, FIG. 1B is a right side view of FIG. 1, and FIG.
3 is a cross-sectional view of FIG. 2, FIG. 4 is a diagram of the automatic water level adjustment mechanism of this embodiment, and FIGS. 5 A to F are each step of this embodiment. It is an explanatory diagram. 1: Pressure vessel, 4: Lid, 4b: Water supply and drainage hole, 1
4: Drain port, 15: Flow switch, 17: Water supply and drainage pipe, 22: Automatic switching valve.

Claims (1)

[Claims] 1. A drain port provided at the top of a pressure vessel that stores the material to be treated and compresses it using hydrostatic pressure, a water supply and drainage hole provided in the lid for opening and closing the pressure vessel, and a flow switch attached to the drain port. and an automatic water level adjustment mechanism for adjusting the water level in the pressure vessel, comprising an automatic switching valve controlled by the flow switch and a water supply and drainage pipe connected to the automatic switching valve and inserted into the water supply and drainage hole. A press frame type hydrostatic pressurizing device with unique features.