JPH0724750B2 - High pressure generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is directed to the synthesis of diamond and CBN (cubic boron nitride), the production of diamond and CBN sintered bodies, the synthesis of other materials, high temperature and high pressure. Regarding the high-pressure generator used for processing, more specifically, regarding the high-pressure generator of the uniaxial pressurization method consisting of a cylinder structure and a pair of anvil structures, it is not a small-scale device for experiments, but a large-scale device for production or a manufacturing device scale. It is adapted to be applied to an experimental device.

[Prior Art] As an example of a high pressure generator of a uniaxial pressurizing type composed of a cylinder structure and a pair of anvil structures, for example, Japanese Patent Publication No.
The one shown in Japanese Patent No. 23463 is widely known, and its schematic structure is shown in FIG. 6 (a). Thus, in the high pressure generator shown in FIG. 6 (a), the upper and lower anvil structures are
a and b are fixed to the upper and lower plates of the press, respectively, and the cylinder structure e in which the pressurized body d including the gasket structure c is loaded in the inner hole is gently placed on the lower anvil structure b. When mounting and driving the press machine to apply pressure, the anvil structure a,
The b is not fixed to the press machine, the pressurized body d is loaded into the cylinder structure e, and the anvil structures a and b are superposed on the upper and lower parts of the cylinder structure e via the gasket structure c. There is a case where the pressure is placed in the center of the pressurizing space of the press machine and the press machine is driven to apply pressure.

In any case, the high-pressure generator described in Japanese Patent Publication No. 36-23463 mentioned above is considered to be a comparatively small experimental device having a cylinder inner diameter of the cylinder structure e of about 10 mm and an outer diameter of about 150 mm. The weight of the cylinder structure e and the anvil structures a and b is so light that they can be held with one hand, and therefore the gasket structure c made of pyrophyllite is equivalent to the cylinder structure e and the anvil structures a and b.
In the state of being sandwiched by b, it cannot withstand the weight and does not collapse, and imbalance of the gasket structure c does not pose a problem. Therefore, the above Japanese Patent Publication No. 36-23463 does not describe an auxiliary device related to handling. However, when applying the above high-pressure generator to a production device,
The cylinder inner diameter of the cylinder structure c is several times to several tens of times, and the weight of the cylinder structure e and the anvil structures a and b is several hundred kg to several tons, which makes it difficult to handle by human power. There is a risk of causing problems.

(I) In the case where the weight of the cylinder structure e is added to the lower gasket structure, there is a risk that a part of the gasket structure c will be destroyed before it functions as a gasket at the initial stage of the pressurizing process. The possibility is great. Further, in particular, when the gasket structure c formed by embossing wax powder or the like is used, the compressive strength thereof is smaller than that of natural wax, so that it is easily broken.

(Ii) When the cylinder structure e is not maintained horizontal and tilts in the initial stage of the pressurizing step, the gasket structure c may be subjected to an unbalanced load or a local compressive force and may collapse.

(Iii) There is no guarantee that the upper and lower gasket structures c will be compressed at equal compression rates and synchronously. In particular, the lower gasket structure is compressed by the weight of the cylinder structure e before the pressurization by the press is started.

(Iv) The upper and lower gasket structures c and the upper and lower anvil structures a and b may be pressed with their axes displaced from each other (the cone angle of the tip of the anvil structure and When the cylinder structure inner hole opening has the same cone angle, the misalignment is automatically corrected during pressurization, but the cone angles are not necessarily the same).

If there are problems such as (i) to (iv) above, the sixth
As shown in exaggerated form in Figure (b), gasket structure c
Is not uniformly compressed in the upper and lower directions or in the circumferential direction, the function required for the gasket structure c is not achieved as intended, and as a result, (i) the cylinder structure e Acceleration of inclination, (ii) obstruction of uniformity of pressure distribution in the pressure chamber, (iii) reduction of pressure sealing ability of the gasket structure c,
(Iv) Reduction of pressure resistance of the device due to a decrease in lateral pressure supporting and reinforcing function of the gasket structure c with respect to the anvil structures a, b and the cylinder structure e, (v) of the gasket structure c This causes various unfavorable situations such as the reduction of the sealing function and the promotion of the blowout phenomenon due to unevenness.As a result, the quality of the product subjected to high temperature and high pressure is affected, and the anvil structure a , b and the cylinder structure e will be reduced in service life.

Conventionally, various measures have been considered against the above-mentioned drawbacks. That is, for example, there is a device in which the cylinder structure is held by a spring and floated so that the weight of the cylinder structure is not applied to the gasket structure before the start of pressurization. One of the countermeasures is the "high-voltage generator" disclosed in Japanese Utility Model Publication No. 47-28310 and the "single-axis high-voltage generator" disclosed in Japanese Utility Model Publication No. 49-11102. There, the cylinder structure is up by interposing a mechanical motion restriction mechanism (link mechanism) between the anvil structure and the cylinder structure.
Always maintain an equal distance from the tip surface of the lower anvil structure,
In addition, the pressure is applied while maintaining the horizontal, and a remarkable effect is recognized particularly in that the upper and lower gasket structures are uniformly and synchronously pressed in the initial stage of the pressing process. There is.

Further, in the "powder body press molding facility" shown in Japanese Patent Publication No. 60-7597, which has been recently proposed, an auxiliary press is provided in addition to the press for forming, and the powder body is supplied and filled into the mold by the auxiliary press. Pre-pressurization, taking out the press-molded product, and cleaning the inside of the mold.

[Problems to be Solved by the Invention] However, among the above-mentioned conventional means, JP-B-47-28310
However, the problems described in Japanese Patent Publication No. 49-11102 and Japanese Utility Model Publication No. 49-11102 have the following problems.

(I) The main body of the link mechanism is composed of 16 pieces of high-precision processed connecting pieces, including long and short pieces, and 24 high-precision processed pins. It is not cheap, and the weight of the connecting piece is large.

(Ii) The link connecting piece overhangs in front of and behind the press machine, making it bulky and lacking compactness.

(Iii) The device is usually placed in a press machine, and the upper and lower anvil structures are fixed coaxially with the pressing shaft of the press machine. The pressing machine must be stopped during cleaning and inspection after completion, removal of the pressurized object after pressurization, loading of the next pressurized object, etc., so the idle time increases. The operating rate of the press machine decreases and the production efficiency deteriorates.

Also, in the case of Japanese Patent Publication No. 60-7597, the above-mentioned Japanese Utility Model Publication
Although the problem described in (iii) above, which is disclosed in Japanese Patent Publication No. 47-28310 and Japanese Utility Model Publication No. 49-11102, has been solved, preliminary pressurization is performed by an auxiliary press before the main pressurization, and the pressurization is performed on the press. There is a problem in that the double labor of transporting and pressurizing again occurs, and waste increases.

In view of the above situation, the present invention is a uniaxial pressurization type high pressure generator, in which two opposed anvil structures synchronously and evenly pressurize an object to be pressurized in a cylinder structure. So that the pair of gasket structures disposed between the cylinder structure and the anvil structure are also pressed vertically and synchronously with each other so that the pressure sealing function can be exerted evenly. The cylinder structure, the anvil structure, and the gasket structure without being biased or tilted in their respective axes so that they can be pressurized coaxially, the durability of the device is improved, and the pressure distribution in the pressure chamber is improved. Improved uniformity,
Preventing blowout accidents, loading and unloading pressurized objects, cleaning anvil structures and cylinder structures,
This is for the purpose of facilitating handling such as inspection and replacement.

[Means for Solving the Problems] The present invention provides a lower base to which a lower anvil structure is detachably mounted, and an upper base which can be raised and lowered to be detachably mounted to an upper anvil structure. A floating frame disposed between the bases so as to be able to move up and down is located between the upper anvil structure and the lower anvil structure. A cylinder structure is arranged such that a gasket structure is interposed between the anvil core and the anvil core of the anvil structure, and the upper base is provided between the floating frame and the upper base and between the floating frame and the lower base. A fluid pressure cylinder is provided to support the cylinder structure so as to be located at a substantially intermediate position between the upper anvil structure and the lower anvil structure during lifting and lowering, and a guide post is provided between the upper base and the lower base. And a guide structure provided with a guide pin that is fitted in the guide post so as to be able to move up and down, and the floating frame is fitted to the outer periphery of the guide post of the guide structure so as to be able to move up and down.

[Operation] The object to be pressurized is loaded in the inner hole of the cylinder core of the cylinder structure, and the gasket structure is inserted between the cylinder core and the anvil core of the upper and lower anvil structures, and pressed by the press machine. At this time, the cylinder structure attached to the floating frame is always kept horizontal by the fluid pressure cylinder, and the distance from the center position in the axial direction of the cylinder core to the tip of the anvil core of the upper anvil structure and the cylinder core The distance from the axial center position to the anvil core tip of the lower anvil structure is kept equal. Therefore, it is possible to easily and surely perform centering and inclination prevention of the upper and lower anvil structures and the cylinder structure during the pressing process.

Also, before starting the pressurization, the upper base, the upper anvil structure,
It is possible to prevent the weight of the floating frame and the cylinder structure from being applied to the gasket structure, and thus to prevent the gasket structure from collapsing before the start of pressurization.

[Examples] Examples of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention, in which a lower base 1 which can travel along a rail 15 via wheels 2 is provided with a stepped through hole 3 having a small upper diameter and a large lower diameter. The through hole 3 has a flange 5 which engages with the step 4 of the through hole 3 of the lower base 1 so that the upper end of the through hole 3 can project above the lower base 1 and is made of a hardened steel disc. The pedestal support block 6 is detachably fitted, and the upper surface of the pedestal support block 6 is
Hollow hole 7 with a predetermined depth concentric with the outer periphery of the pedestal support block 6
A lower pedestal core 8 made of a cemented carbide whose lower surface is supported by the pedestal support block 6 is fitted into the hollow hole 7, and the lower pedestal core 8 has an upper surface on which the core is attached. An anvil core 9 made of a cemented carbide and having a diameter smaller than that of the core 8 is mounted concentrically with the core 8. Further, the vertical cross-sectional shape of the anvil core 9 is such that the center side thereof projects upward.

A multiple tightening ring 10 for reinforcing the anvil core 9 is fitted on the outer periphery of the anvil core 9, and a collar 11 is formed on the outer peripheral portion of the multiple tightening ring 10. Further, a mounting tool 14 having a step portion 13 is attached to the upper surface of the pedestal support block 6 via a bolt 12, and the stepped portion 13 of the mounting tool 14 causes the multiple tightening ring 10 to pass through the collar 11 to mount the pedestal support block 6. It is fixed to. Further, a horizontally oriented fluid pressure cylinder 16 is disposed on the lower base 1, and a piston rod 16a of the fluid pressure cylinder 16 is fitted into a groove 17 provided on the outer periphery of the pedestal support block 6 so that the pedestal support block 6 is attached. A stopper plate 18 is attached to prevent the stopper plate 18 from falling down. Thus, the pedestal support block 6, the lower pedestal core 8, the anvil core 9, the multiple tightening ring 10, the fixture 14 and the like form a lower anvil structure 19.

Hollow guide posts 20 are provided upright at the four corners of the upper surface of the lower base 1. An upper base 22 is fixed to the upper surfaces of guide pins 21 slidably fitted in the hollow guide posts 20. There is. Thus, the guide structure 23 is formed by the guide post 20, the guide pin 21, and the like.

The upper base 22 is provided with a stepped through hole 24 having a large diameter at the upper portion and a small diameter at the lower portion, and a bush 25 made of hard rubber is fitted to the outer peripheral flange portion of the through hole 24 to form the bush 25 portion. Comes into contact with the step 26 of the through hole 24 of the upper base 22 and the lower end
A disk-shaped pedestal support block 27 made of hardened steel that is capable of protruding downward than the above is detachably fitted, and a predetermined height is concentrically formed on the lower surface of the pedestal support block 27 concentrically with the outer periphery of the pedestal support block 27. Hollow hole 28 of is formed, the hollow hole 28,
An upper pedestal core 29 made of a cemented carbide whose upper surface is supported by the pedestal support block 27 is fitted, and the lower surface of the upper pedestal core 29 is concentric with the core 29 and has a diameter smaller than that of the core 29. An anvil core 30 made of hard alloy is abutted against. Further, the vertical cross-sectional shape of the anvil core 30 has a shape in which the center side projects downward and is vertically symmetrical with the anvil core 9.

A multiple tightening ring 31 for reinforcing the anvil core 30 is fitted on the outer periphery of the anvil core 30, and a collar 32 is formed on the outer peripheral portion of the multiple tightening ring 31. Further, a fixture 35 having a step portion 34 is attached to the lower surface of the pedestal support block 27 through a bolt 33, and the stepped portion 34 of the fixture 35 causes the multiple tightening ring 31 to pass through the collar 32 and the pedestal support block.
It is fixed at 27. Thus, the pedestal support block 27, the upper pedestal core 29, the anvil core 30, the multiple tightening ring 31, the fixture 35, etc. form an upper anvil structure 36.

Floating frame via guide push 37 to guide post 20
38 is slidably fitted in the vertical direction, and the floating frame 38 is provided with a through hole 39 having a large diameter in the upper part and a small diameter in the lower part, and the cores 30, 9 are provided between the upper and lower anvil cores 30, 9. On the outer circumference of the cylinder core 40 made of cemented carbide or special steel and arranged concentrically with
For reinforcement, a multiple tightening ring 41 made of steel is fitted, the multiple tightening ring 41 is fitted in the through hole 39, and the step portion 42 on the outer circumference of the multiple tightening ring 41 is formed in the through hole 39. It is engaged with the step portion 43. The shape of the edge portion of the inner hole of the cylinder core 40 is formed in a predetermined curved shape so that a predetermined distance is maintained between the facing surfaces of the anvil cores 30, 9 and is closed by the anvil cores 9, 30. A pressure chamber is formed in the inner hole of the cylinder core 40. Thus, the cylinder structure 40 is constituted by the cylinder core 40 and the multiple tightening ring 41, and between the cylinder structure 44 and the upper anvil structure 36, the lower anvil structure 19, for water cooling at the time of pressurization. Spaces 45 and 46 are formed. Also, rubber packing 47, 48 for watertightness is arranged between the upper surface of the multiple tightening ring 41 and the lower surface of the multiple tightening ring 31 and between the lower surface of the multiple tightening ring 41 and the upper surface of the multiple tightening ring 10. I'm supposed to get it. Space 46,
Although not shown, a pipe for introducing the cooling water to the 47 is provided in the upper anvil structures 36, 19 on the lower side.

On the upper surface of the lower base 1, a cylinder body 50 of a plurality of sets of vertical fluid pressure cylinders 49 operated by hydraulic pressure or air pressure is provided.
The piston rod 50a slidably fitted to the cylinder body 50 is connected to the lower surface of the floating frame 38 at its upper end, and a fluid supply hole 51 is provided at the lower side of the cylinder body 50. . On the upper surface of the floating frame 38, a plurality of sets of vertical fluid pressure cylinder main bodies 53, which are operated by hydraulic pressure or pneumatic pressure similarly to the fluid pressure cylinders 49, are erected, and pistons slidably fitted in the cylinder main bodies 53. The upper end of the rod 53a is connected to the lower surface of the upper base 22, and a fluid supply hole 54 is provided below the cylinder body 53.

Fluid cylinder 52 is upper anvil structure 36, upper base
Supporting weight such as 22 and the like, the fluid pressure cylinder 49 includes an upper anvil structure 36, an upper base 22, a floating frame 38, and a cylinder structure 44.
Etc., the fluid pressure cylinders 52, 49 are each stroked by a fluid supplied from a piping circuit (not shown) connected to the fluid pressure supply holes 54, 51. Are configured to be the same. As a result, the cylinder structure 44 placed on the floating frame 38 is always kept horizontal, and the center of the cylinder core 40 in the height direction is always at the lower end of the anvil core 30 of the upper anvil structure 36 and the lower anvil structure 19. It is designed to be set at an intermediate position equidistant from the upper end of the anvil core 9.

The structure of the pressurized body 55 housed in the pressure chamber in the cylinder core 40 is generally adopted in this kind of uniaxial pressure type high pressure generator, and is not peculiar to the present invention.
Therefore, although detailed description is omitted, a conductive ring, an electrode plate, a carbon heater, a heat and electrical insulating plate fitted to the inner diameter portion of the conductive ring, a pressure medium, an insulator in the carbon heater, a capsule, etc. It is composed of a sample and the like to which the stored pressure and high temperature are applied. Further, the power is supplied to the pressed body 55 through the lower anvil structures 36 and 19.

Cylinder core 40 and anvil core 3 when pressurizing object 55
The structures and materials of the gasket structures 56 and 57 interposed between the 0 and 9 are the same as those generally used in this type of uniaxial pressure type high pressure generator, and are not unique to the present invention. Absent. Gasket structures 56 and 57, which are formed by cutting out from a homogeneous pyrophyllite block, are widely used in small devices due to their excellent performance, but are extremely popular in large devices. Since it becomes expensive, it is preferable to use a powder containing an inexpensive pyrophyllite powder as a main component, which is pressure-molded using a mold.

The high-pressure generating device can apply a pressing force from above or below by a hydraulic press, but the drawing is omitted. It should be noted that in the high pressure generator of FIG. 1, the lower end of the anvil core 30 of the upper anvil structure 36 and the upper end of the anvil core 9 of the lower anvil structure 19 are the pressurized body 55 loaded in the inner hole of the cylinder core 40. And gasket structure 56,57
It shows the state immediately before the contact with and the pressurization is started.

Next, regarding the operation of the apparatus of the present invention, FIG.
With reference to (b) and (c) as well, the process will be sequentially described from the stage where the pressurization in the previous cycle is completed. Incidentally, FIG. 2 (a)
In (b) and (c), 58 is a handling table that allows the high pressure generator to run, 59 is a pedestal for the lower anvil structure 19,
60 is a hanging metal fitting for the upper anvil structure 36, 61 is a groove for engaging the hanging metal fitting 60 provided on the upper surface of the pedestal support block 27 of the upper anvil structure 36, 62 is an extraction support base, 68 is a punching pin, 64 is a gasket structure Debris of the objects 56, 57, 65 is a space of the extraction support base 62, 66 is an inclined plate provided in the space 65, 67 is a debris 64 of the pressurized body 55 and the gasket structures 56, 57 extracted. It is a collection dish to receive.

Pressurization completed.

When the pressurization is completed, the upper plate of the press machine (not shown) is separated from the upper base 22 of the high-pressure generator, and the device is still on the lower plate of the press. Here, during pressurization, the rail that had sunk from the upper surface of the lower base body rises due to the force of the fluid pressure, contacts the wheels 2 of the lower base 1, and lifts this, so that the lower surface of the lower base 1 is pressed. Move away from the lower body of the machine. At this time, the rail inside the press is at the same height as the rail outside the press, and the high-pressure generator can be easily pulled out to the outside of the press.
It is moved to the handling table 58 shown in.

Separation of upper and lower anvil structures 36,19.

The handling table 58 is divided into three stations. The first station A as shown in FIG. 2 (a)
Is a station for separating or combining the upper and lower anvil structures 36, 19 from the upper base 22 and the lower base 1. That is, when the receiving table 59 rises from below the handling table 58 and comes into contact with the bottom surface of the lower anvil structure 19, the catch 18 on the lower base 1 is retracted by the fluid pressure cylinder 16 and the holding thereof is released.

The lower anvil structure 19 rides on the pedestal 59, and as the pedestal 59 descends, it separates from the lower base 1 and descends to the position shown in FIG. 2 (a).

On the other hand, with respect to the upper anvil structure 36, the hanging metal fitting 60 descends from above, engages with the groove 61 provided on the upper surface of the upper anvil structure 36, and is lifted up by the force of fluid or the like. The suspended state is shown in FIG. 2 (a).
Subsequently, after the apparatus main body moves to the next station B shown in FIG. 2 (b), the station A cleans the tip surfaces of the anvil cores 30 and 9 and inspects for damage.

Removal of pressurized body 55.

The apparatus main body is stopped at a predetermined position of the station B in order to remove the pressurized body 55. In this state, the body 55 to be pressed is still sandwiched in the inner hole of the cylinder core 40. Here, the extraction support base 62 rises, and its upper surface abuts the lower surface of the cylinder core 40. On the other hand, the punching pin 63 descends from above and punches the body 55 to be pressed by fluid pressure. The pressed object 55 and the broken pieces 64 of the gasket structure are punched out, and are vacant inside the support base 62.
It falls to 65, rolls the inclined plate 66, and falls into the recovery tray 67.
After punching, the sampling support base 62 and the punching pin 63 descend or rise to return to their original positions.

Loading the pressurized body 55.

Subsequently, the apparatus main body moves to a station C shown in FIG. 2 (c) for loading a new body 55 to be pressed, and stops at a predetermined position. After cleaning the debris and the like of the body to be pressurized adhering to the inner hole of the cylinder core 40 and inspecting for damage or the like, a new body 55 to be pressurized is loaded into the inner hole. The gasket structures 56 and 57 are also put in place. Lower gasket structure 5
If 7 falls due to gravity, temporarily fix it with a temporary adhesive.

Combined upper and lower anvil structures 36,19.

The main body of the apparatus returns to the station A where the upper and lower anvil structures 36, 19 are separated and combined, and stops at a predetermined position. The upper anvil structure 36 and the lower anvil structure 19 are reassembled into the main body of the apparatus by an operation opposite to the above-described separation, and are held by the upper base 22 and the lower base 1, respectively. The tips of the anvil cores 30 and 9 lightly contact the upper and lower surfaces of the gasket structures 56 and 57 and the body 55 to be pressed, but the pressure is not yet applied at this position. The condition at this point is shown in FIG. The fluid pressure cylinder 52 supports the total weight of the upper anvil structure 36, the upper base 22 and the like, and the fluid pressure cylinder 49 has the total weight of the upper anvil structure 36, the upper base 22, the floating frame 38, the cylinder structure 44 and the like. Therefore, these weights do not add to the gasket structures 56, 57 before the start of pressurization and cause the gasket structures 56, 57 to collapse.

Move the high pressure generator into the press.

When the high pressure generator moves on the rail to a predetermined position in the pressurizing space of the press machine and stops, the rail on the upper surface of the lower board of the press machine retreats into the board body, and the bottom surface of the lower base 1 of the high pressure generator presses the bottom surface. Abut on the upper surface of the lower board of the machine. Also, the upper and lower anvil structures 36, 19 with the conductors for heating the pressurized body 55 in the high pressure generator connected to the upper and lower boards of the press machine with the insulators arranged in the required portions. And a pipe for supplying cooling water to the spaces 45, 46 are connected to the upper and lower anvil structures 36, 19.

Pressurization.

The ram of the press machine presses the high pressure generator from above or below. Piston rods 53a, 50a of fluid pressure cylinders 52, 49
Due to the synchronization of the strokes, the upper anvil structure 36 and the lower anvil structure 19 synchronously start the compression of the pressurized body 55 while compressing the upper and lower gasket structures 56, 57.

In this case, it is important to note that the gasket structures 56 and 57 have their original thickness within a relatively short time from the start of pressurization, in other words, while the press load is still low at a few tons or tens of tons. Therefore, the rate of increase of the compression stroke after the pressing load increases becomes small. The formation of the upper and lower even gaskets is greatly affected by the manner of compression at the initial stage of pressurization. Once the upper and lower uniform gaskets are formed in the initial stage of pressurization, the uniformity is maintained even in the subsequent stage where the load is increased.
Piston rod 5 of fluid pressure cylinders 52, 49 in the present invention
The stroke synchronizing mechanism of 3a and 50a regulates the relative positions of the upper and lower anvil structures 36 and 19 and the cylinder structure 44 in this important initial stage of pressurization, which makes the above-mentioned relatively simple mechanism possible. The drawbacks and problems of the prior art are solved. After the pressing load becomes large, the restriction force is not exerted, and simply follows the movements of the upper and lower anvil structures 36, 19 and the cylinder structure 44.

When the press pressure reaches a predetermined height, let cooling water pass through,
The pressed body 55 is heated by passing an electric current and is held for a predetermined time. After that, the pressure and temperature are gradually decreased, and the pressurization process is completed. As a result, the pressurization ends again.

In addition, since a bush 25 made of hard rubber is present in the fitting portion between the upper anvil structure 36 and the upper base 22, etc., blowout should occur or the upper and lower anvil structures should be generated during high pressure. 36,19, Cylinder structure 44 The main part of the structure was destroyed and the equilibrium in the pressure chamber was lost, and the upper and lower anvil structures 36,1
Even when a strong force that deviates the axes of the cylinder structure 44 and the cylinder structure 44 is generated, the impact force can be absorbed by the bush 25 and the guide structure 23 and the like are protected.

FIG. 3 shows a modified example of the fluid pressure cylinders 49, 52 used in the present invention, which also serves as a guide structure. In this case, the upper end of the piston rod 50a is fixed to the lower surface of the floating frame 38 by welding or the like, the fluid pressure cylinder 52 is turned upside down with respect to the case of FIG. 1, and the cylinder body 53 is fixed to the lower surface of the upper base 22, The lower end of the piston rod 53a is fixed to the upper surface of the floating frame 38 by welding or the like.

FIGS. 4A and 4B show an example in which the cylinder structure 44 can be pulled out in the lateral direction. The multiple tightening phosphorus 41 portion of the cylinder structure 44 is a groove provided in the floating frame 38 and extending in the lateral direction. It is fitted and supported by the wheel 68 so as to be laterally movable via wheels 69. The cylinder structure 44 is extracted from the floating frame 38 and placed on the rail 70.

5 (a) and 5 (b) show an example in which the upper and lower anvil structures 36, 19 can be laterally pulled out.
On the upper surface and the lower surface of the upper base 22, the lower anvil structure 19,
Slide guides 70, 71 for laterally pulling out the lower anvil structure 36 are fixed. In the figure, 72 is a knock-ite hole, and 73 is fixed. In the figure, 72 is a knockout hole, 73
Is a cleaning hole. Although not shown, guide rails connectable to the slide guides 70, 71 are provided at the upper and lower anvil structures 36, 19 withdrawn positions.

In addition, in the embodiment of the present invention, the case where the guide structure is provided has been described, but the guide structure is an auxiliary component and can be omitted, and the outer periphery of the pedestal support block that can be fitted to the lower base. Needless to say, a bush made of hard rubber may be attached, and other various modifications may be made without departing from the scope of the present invention.

[Effects of the Invention] According to the high pressure generator of the present invention, various excellent effects as described below can be obtained.

(I) Maintaining the cylinder structure horizontally during the pressurizing step and maintaining the distance from the anvil tip of the upper and lower anvil structures to the center of the cylinder core of the cylinder structure at equal distances are processed with high precision. Since it is possible to use a fluid pressure cylinder commercially available as a standard product instead of a link mechanism that requires a large number of connecting pieces and pins, the device can be manufactured at low cost.

(II) Simple structure and easy maintenance.

(III) Since the device itself is lightweight and compact, the device body can be arbitrarily moved inside and outside the press by attaching a wheel device to the lower part of the device and connecting the inside and outside of the press with a rail. If at least two units of this device are prepared for one press machine, during the pressurizing process of one unit, the other unit extracts the body to be pressurized, anvil structure,
It is possible to clean the cylinder structure and load a new object to be pressed, to efficiently use the press machine and to improve the operating rate.

(IV) The upper anvil structure can be extracted upward or laterally, the lower anvil structure can be extracted downward or laterally, or the cylinder structure can be laterally extracted while the device is out of the press machine. Therefore, it is easy to clean, inspect, and replace the anvil core and the cylinder core.

(V) Since the upper and lower anvil structures and the cylinder structure can be easily and reliably centered and tilted,
The axes of the anvil core and the cylinder core during the pressurizing step can be made to coincide with each other, and therefore imbalance of pressurization can be prevented and accurate pressurization can be performed.

(VI) It is possible to prevent the weight of the upper base, the upper anvil structure, the floating frame, and the cylinder structure from being added to the gasket structure before the pressurization is started, so that the gasket structure is collapsed before the pressurization is started. There is no.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the high pressure generator of the present invention, FIGS. 2 (a), (b) and (c) are explanatory views of the operation of the high pressure generator of the present invention, and FIG. FIGS. 4 (a) and 4 (b) are explanatory views of a modified example of the fluid pressure cylinder used in the high-pressure generator, in which the cylinder structure is taken out in the lateral direction in the present invention. FIG. 5 (a) is a side view, FIG. 4 (b) is a plan view, and FIGS. 5 (a) and 5 (b) are explanatory views when the extraction direction of the anvil structure is set to the lateral direction in the present invention. a) is a side view, FIG. 5 (b) is a plan view,
6 (a) and 6 (b) are explanatory views of a conventional high pressure generator. In the figure, 1 is a lower base, 6 is a pedestal support block, 8 is a lower pedestal core, 9 is an anvil core, 10 is a multiple tightening ring, 14
Is a fixture, 18 is a clasp, 19 is a lower anvil structure, 20 is a guide post, 21 is a guide pin, 22 is an upper base, 27 is a pedestal support block, 29 is an upper pedestal core, 30 is an anvil core, 31 is Multiple tightening rings, 35 is a fixture, 36 is an upper anvil structure, 38 is a floating frame, 40 is a cylinder core, 41 is multiple tightening rings, 44 is a cylinder structure, 49 is a hydraulic cylinder,
52 is a fluid pressure cylinder, 55 is a body to be pressurized, and 56 and 57 are gasket structures.

Claims (6)

[Claims] 1. A lower anvil structure is detachably mounted on a lower base and an upper anvil structure is detachably mounted on a vertically movable upper base so that the lower anvil structure can be vertically moved between the upper base and the lower base. The disposed floating frame is located between the upper anvil structure and the lower anvil structure, and a body to be pressurized is loaded in the inner hole portion, and the cylinder core and the anvil core of the upper and lower anvil structures are provided. Arrange a cylinder structure with a gasket structure interposed between
Between the floating frame and the upper base and between the floating frame and the lower base, a fluid pressure that supports the cylinder structure so as to be located at a substantially intermediate position between the upper anvil structure and the lower anvil structure when the upper base is moved up and down. A cylinder is provided, and a guide structure including a guide post and a guide pin fitted in the guide post so as to be movable up and down is disposed between the upper base and the lower base, and the guide post of the guide structure is provided. A high-voltage generating device characterized in that the floating frame is fitted to the outer periphery of the device so as to be able to move up and down. 2. The high pressure generator according to claim 1), wherein wheels are provided on the lower base so that the entire device can move between inside and outside of the press machine. 3. The method according to claim 1, wherein the upper anvil structure can be extracted upward from the upper base and the lower anvil structure can be extracted downward from the lower base. High pressure generator. 4. The high pressure generator according to claim 1) or 2), wherein the cylinder structure can be pulled out laterally from the floating frame. 5. An upper anvil structure can be extracted laterally from the upper base, and a lower anvil structure can be laterally extracted from the lower base. Claims 1) or 2). The high pressure generator described. 6. A fitting portion between an upper anvil structure and an upper base, a fitting portion between a lower anvil structure and a lower base, and at least one of fitting portions between a floating frame and a guide structure. The high pressure generator according to claim 1) or 2) or 3) or 4) or 5) in which a bush made of an elastic body is interposed.