RU2791728C1 - ISOstatic HOT PRESSING PLANT WITH TOP LOADING - Google Patents

Abstract

FIELD: powder metallurgy.

SUBSTANCE: invention relates to powder metallurgy, in particular to devices for hot isostatic pressing, such as an isostatic press. The isostatic pressing machine comprises a power frame and a container with a top plug connected to a control device. The upper plug under the influence of working pressure is kept from displacement by a sliding gate valve, the position of which within the container is regulated by a moving unit attached to the power frame, gripping the lever of which performs work with the help of a hydraulic cylinder. The control means is located above the power frame and is made in the form of a hydraulic platform with traction rod-like elements installed along the edges, forming the said connection with the top plug.

EFFECT: prevention of jamming of the upper plug and prevention of its axial displacement during operation of the isostatic machine.

6 cl, 4 dwg.

Description

Technical field

The present invention relates to the field of hot isostatic pressing and relates to the design of isostatic presses, the equipment of which, in operating modes, blocks the axial movement of the top plug and carries out its movement under unloading/loading conditions.

State of the art

An isostatic pressing device is known from the prior art (see DE2422344, class B22F3/04, publ. 1974 [1]).

The well-known technical solution [1] refers to the design of isostatic presses for processing in a working environment under pressure previously subjected to thermal action of powder materials in a protective shell.

The considered isostatic device has an upper loading and unloading area and is made in the form of a container with an upper protective plug, the opening/closing of which is provided by means of a threaded connection.

The presence of a threaded interface of parts significantly limits the permissible mass of the top plug and reduces the installation accuracy; this design can be successfully used only for small isostatic presses.

With a long period of operation, the threaded connection of the top plug and the container, due to excessive pressure, will gradually wear out, accompanied by damage to the threaded turns, which can lead to jamming of the connection and serious damage to the equipment.

The closest in terms of technical essence to the claimed invention is the isostatic installation QIH-122 Modular HIP manufactured by Quintus Technologies (see https://www.youtube.com/watch?v=MGAeEmtLLyM [2]).

As you can see, the well-known isostatic installation [2] contains a three-dimensional power frame and a cylindrical container with an upper plug, which is connected to the control means.

The composition of the specified control means of the known installation includes a gate element, which has the ability to block/unblock the top plug, ensuring its reliable retention during the direct operation of the installation.

The gate element is controlled automatically by means of a drive subsystem, which is located on the side of the container and, due to the operation of the gripping and support levers, performs the rotational movement of the gate element, which has a rounded structural shape, and its axis of rotation passes in the region of the peripheral part, providing the possibility of exit gate element outside the overall limits of the container.

Since the axis of rotation of the gate element passes through the region of its peripheral part, then during the operation of the known isostatic machine [2], it is impossible to exclude the occurrence of conditions for skew or jamming of the gate mechanism, in particular, during its rotation, while the most likely jamming can occur in large-format gates, balance and vibration-free displacement, which is extremely difficult to provide and will require the use of additional equipment.

It should also be noted that the solution [2] does not provide free and ergonomically designed access to the top plug, which complicates its opening/closing, and also creates difficulties in the event of scheduled maintenance or repair.

Disclosure of invention

The technical problem of the proposed invention is the creation of an isostatic press machine with high technical and operational performance, the equipment of which has the ability to improve and improve the control and management of the state of the top plug, designed to block/unblock access to the top of the container, through which the workpieces are unloaded/loaded into the isostatic press.

The technical result of the invention is the implementation of the specified purpose of creating an isostatic press machine, the design of which provides improved ergonomics and expanded functionality during operation, as well as improving the quality of the arrangement of the loading and unloading area of the container, which manifests itself in preventing jamming of the sliding gate valve and the top plug.

The specified technical result, which solves the specified technical problem, is achieved as a result of the fact that the isostatic pressing machine contains a power frame and a container with a top plug connected to a control means, while the top plug, being under the influence of working pressure, is kept from displacement by a sliding gate valve, position which, within the container, is regulated by a movement unit attached to the power frame, the gripping lever of which performs work with the help of a hydraulic cylinder, while the control means is located above the power frame and is made in the form of a hydraulic platform, preferably having a flat rectangular structure with stiffening ribs on the outside , and along the edges of said hydraulic platform, at least four traction rod-shaped elements are installed, which form said connection with the top plug through intermediate T-shaped holders.

According to a preferred embodiment of the invention, the movement unit has an installation base in the form of two adjacent platforms applied from opposite sides to the power frame. The installation base of the specified movement unit can be equipped with a U-shaped holder, which limits the movement of the sliding gate valve above the container.

According to a particular embodiment of the invention, the hydraulic platform hydraulic cylinder can be located on the outside in the central part.

The intermediate T-holders used are attached to the side of the top plug.

Adjacent platforms of the displacement unit have holders with through holes for passage of traction rod-like elements through them.

Attention is drawn to a new universal design of an isostatic press, which has high technical and operational performance and has the ability to monitor and control the state of the top plug for unloading and unloading, thereby creating conditions for successful and reliable operation, including under extreme loads, which in turn is accompanied by operational stability and a guarantee of reliable, excluding jamming, operation of the slide mechanism and the top plug with the possibility of its complete blocking, excluding its axial displacement when high pressure appears.

The basic features of the proposed isostatic pressing machine with top loading and unloading arrangement, according to the specific concept of the invention, is the presence of a movement unit and a control means, the structural interaction of which forms a structure that combines the possibility of controlled raising/lowering of the top plug with the elimination of jamming, as well as the possibility of blocking the top plug by moving the slide valve without jamming and, if necessary, changing its working position, thus blocking possible axial displacement of the top plug, ensuring maximum operational reliability even in the case of excessively high loads.

Moreover, the specified movement unit is the main one in accordance with the invention and contains a gripping lever that performs work with the help of a hydraulic cylinder, i.e. the gripping lever securely holds the gate valve, excluding jamming of the latter, and with the help of a hydraulic cylinder closes or opens access to the top plug, as a result of which, in the “open” position, the top plug is accessible and can be raised and lowered, and in the “closed” position, the top plug is securely locked and its axial displacement during the direct operation of the isostat is practically impossible.

At the same time, the control means is located above the power frame and structurally represents a hydraulic platform with traction rod-like elements installed along its edges, forming a connection with the upper plug, i.e. in the case of displacement towards the slide gate valve, the control means has the ability to freely raise or lower the top plug and this is done with the help of traction elements, which, according to the plan, are connected with the top plug with their lower ends, and are fixed at the upper ends on the specified platform, which, due to the hydraulic drive, has the ability to vertical movement.

Thus, the presented isostatic pressing machine with top loading and unloading arrangement, taking into account its characteristics and technical features, forms a set of features sufficient to achieve the desired technical result, which consists in realizing the purpose of creating an isostatic pressing machine, the constructive implementation of which provides improved ergonomics and expanded functionality. during operation, as well as improving the quality of arrangement of the loading and unloading area of the container, which manifests itself in preventing jamming of the sliding gate valve and the top plug, as well as to solve this technical problem of creating an isostatic press machine with high technical and operational performance, the equipment of which has the possibility of improved and improved control and management of the state of the top plug, designed to block / unblock access to the top of the container, through the cat I am unloading / loading blanks into an isostatic press.

Brief description of the drawings

In FIG. 1 shows a general view of the proposed isostatic pressing machine;

In FIG. 2 is a view of the control means on the isostatic pressing machine;

In FIG. 3 shows a view of the movement unit on the isostatic pressing machine in the “closed” position of the slide valve;

In FIG. 4 shows a view of the movement unit on the isostatic pressing machine in the “open” position of the slide valve.

Implementation of the invention

The proposed isostatic pressing machine is illustrated by specific examples of execution and implementation, which, however, are not the only possible ones, but clearly demonstrate the achievement of the specified set of essential features of the desired technical result, as well as the solution of the specified technical problem.

In FIG. 1-4 the following parts and elements of the proposed isostatic pressing machine are indicated:

1 - power frame;

2 – platform hydraulic cylinder;

3 - gate valve;

4 - top plug;

5 - hydraulic cylinder for moving the sliding gate valve;

6 – gripping lever;

7 - hydraulic platform;

8 - U-shaped holder;

9 - intermediate T-shaped holders;

10 - traction rod-like elements;

11 - adjacent sites;

12 - holders with through holes;

13 - container;

14 - stiffeners.

And so, the proposed isostatic pressing machine contains a power frame 1 and a container 13 with a top plug 4 connected to the control tool.

The upper plug 4, being under the influence of working pressure, is kept from displacement by the sliding gate valve 3. The position of the sliding gate valve 3 within the container 13 is regulated by the movement unit attached to the power frame 1, the gripping lever 6 of which performs work with the help of the hydraulic cylinder 5.

The control means is located above the power frame 1 and is made in the form of a hydraulic platform 7 with four traction rod-like elements 10 installed along its edges, forming the actual connection with the top plug 4.

The specified movement unit, which includes the gripping lever 6 and the hydraulic cylinder 5, has an installation base in the form of two adjacent platforms 11 adjacent to the power frame 1 on opposite sides.

The specified mounting base is equipped with a U-shaped holder 8, which limits the movement of the sliding gate valve above the container 13.

The hydraulic cylinder 2 of the hydraulic platform 7 is located on its outer side in the central part.

The hydraulic platform 7 is provided with stiffening ribs 14 from the outside.

According to the implementation example of the traction rod-like elements 10, there are four, while the ends of the traction rod-like elements 10 are connected to the top plug 4 by means of intermediate T-shaped holders 9.

Also mentioned adjacent platforms 11 of the movement unit have holders 12 with through holes for the possible passage of traction rod-shaped elements 10 through them.

The proposed machine isostatic pressing works as follows.

When oil is drained from the piston cavity of the hydraulic cylinder 5, the gripping lever 6 extends the slide valve 3 and installs it directly above the top plug 4, while the position of the slide valve 3 is closed. With this position of the slide valve 3, the upper plug 4 is securely locked and does not have the possibility of axial displacement due to the pressure generated in the container 13.

When oil is supplied to the piston cavity 5, the gripping lever 6 pushes the sliding gate valve 3 out of the space above the top plug 4. For safety, the travel of the gripping lever 6 is limited by the U-shaped holder 8, in this case the position of the sliding gate valve 3 is open.

The considered node for moving the gate valve 3 has an installation base in the form of two adjacent platforms 11 adjacent to the power frame 1 on opposite sides.

At the same time, when oil is supplied to the rod end of the hydraulic cylinder 2 of the hydraulic platform 7, the rod directly abuts against the power frame 1, and the sleeve with the hydraulic platform 7 moves upward relative to the power frame 1, while raising the upper plug 4 evenly without distortions with traction rod-like elements 10 held by intermediate T-shaped holders 9.

When oil is drained from the rod end of the hydraulic cylinder 2, the sleeve with the hydraulic platform 7 and the traction rod-shaped elements 10 moves back systematically down, lowering the top plug 4, placing it without distortions on the mounting location of the container 13.

It should be noted that structurally the hydraulic platform 7 is attached to the sleeve of the hydraulic cylinder 2, while the rod of the hydraulic cylinder 2 is directed downward and abuts against the power frame 1.

The presence, according to the invention, of the movement unit and the control means, forms a system that combines the possibility of controlled raising/lowering of the top plug 4 with the exception of jamming, as well as the possibility of blocking the top plug 4, which is important from the point of view of the inventive concept, due to the reliable movement of the slide valve 3, excluding jamming of the latter and, if necessary, changing its working position, thereby blocking the possible axial displacement of the upper plug 4, ensuring maximum operational reliability and protection even in the case of excessively high loads.

As follows from the implementation example, the movement unit contains a gripping lever 6, which performs work with the help of a hydraulic cylinder 5, i.e. the gripping lever 6 holds the gate valve 3, excluding jamming of the latter, and with the help of the hydraulic cylinder 5 closes or opens access to the top plug 4, as a result of which, in the “open” position, the top plug 4 is accessible and can be raised and lowered, and in the “closed” position In this position, the upper plug 4 is securely protected and locked, and its axial displacement during the direct operation of the isostat is practically impossible.

In addition, the considered control means, which structurally represents a hydraulic platform 7 with several traction rod-shaped elements 10 installed along its edges, forming a connection with the upper plug 4, ensures its unimpeded and uniform lifting and lowering, eliminating possible distortions and, accordingly, unwanted jamming.

At the same time, the proposed isostatic pressing machine is distinguished by a simplified and ergonomically equipped loading and unloading part, while providing improved access for maintenance.

Also, due to the reliability and simplicity of the design, it can be combined with large containers for isostatic pressing.

The proposed invention can be widely used in industry and can be used as equipment for isostatic pressing of materials.

Claims (6)

1. An isostatic pressing machine, comprising a power frame and a container with a top plug connected to a control means, characterized in that the top plug, being under the influence of operating pressure, is kept from moving by a sliding gate valve, the position of which within the container is controlled by a unit attached to the power frame movement, the gripping lever of which performs work with the help of a hydraulic cylinder, while the control means is located above the power frame and is made in the form of a hydraulic platform, preferably having a flat rectangular structure with stiffeners on the outside, and four traction rod-shaped elements that form said connection with the top plug through intermediate T-shaped holders. 2. Isostatic pressing machine according to claim 1, characterized in that the movement unit has an installation base in the form of two adjacent platforms applied from opposite sides to the power frame. 3. Isostatic pressing machine according to claim. 2, characterized in that the mounting base is equipped with a U-shaped holder that limits the movement of the slide gate above the container. 4. Isostatic pressing machine according to claim 1, characterized in that the hydraulic platform hydraulic cylinder is located on the outside in the central part. 5. Isostatic pressing machine according to claim 1, characterized in that the intermediate T-shaped holders are attached to the side of the top plug. 6. Isostatic pressing machine according to claim 2, characterized in that the adjacent platforms have holders with through holes for the passage of traction rod-like elements through them.

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