Dual media cold isostatic press press system

Abstract

The utility model relates to cold isostatic press technical field provides a double medium cold isostatic press system, including support, high pressure container cylinder and pressure bearing frame, and the front end of support top is provided with high pressure container cylinder, and the top of high pressure container cylinder is provided with the upper plug, and one end of upper plug bottom is provided with the lifting mechanism, and the lifting mechanism is installed on the lateral wall of high pressure container cylinder, and the other end of upper plug is provided with exhaust component, and the bottom of high pressure container cylinder is provided with the lower plug, the utility model discloses through setting up oil water isolation device contains the barrel mouth, the isolating sleeve, the barrel bottom and the support barrel, separates the pressurized medium and the working medium, and the isolating sleeve adopts the oil -resistant nitrile rubber, and the barrel mouth is the external hanging type structure, effectively prevents the oil water mixing pollution. This design avoids the equipment corrosion caused by medium cross -contamination, reduces the sealing failure problem caused by the medium impurity, reduces the equipment maintenance frequency and cost, guarantees the stability of medium performance in the pressing process simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of cold isostatic press technology, and in particular to a dual-medium cold isostatic press pressing system. Background Technology

[0002] Cold isostatic presses play a crucial role in the forming and processing of ceramics, metal powders, and composite materials. However, with the increasing demands for product precision, production efficiency, and equipment operational stability in industrial manufacturing, traditional cold isostatic press systems are gradually revealing a series of technical problems that urgently need to be addressed:

[0003] Traditional cold isostatic pressing systems often suffer from poor isolation between the pressurizing medium and the working medium. Some equipment lacks a dedicated, high-efficiency isolation device, or the isolation device's structural design is unreasonable, or the materials used are of insufficient performance. This leads to easy cross-mixing of the two media during the pressing process. This mixing not only contaminates either the pressurizing or working medium, affecting its performance stability and causing fluctuations in the quality of the pressed workpiece, but can also trigger corrosion problems inside the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a dual-medium cold isostatic press system, which solves the above-mentioned problems by using this device.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a dual-medium cold isostatic press system, including a support, a high-pressure vessel cylinder, and a pressure-bearing frame. The high-pressure vessel cylinder is provided at the front end of the top of the support. An upper plug is provided at the top of the high-pressure vessel cylinder. A lifting mechanism is provided at one end of the bottom of the upper plug and is installed on the side wall of the high-pressure vessel cylinder. An exhaust component is provided at the other end of the upper plug. A lower plug is provided at the bottom of the high-pressure vessel cylinder. An isolation barrel is provided inside the high-pressure vessel cylinder. An opening is provided at the top of the isolation barrel and a bottom is provided at the bottom of the isolation barrel. A pressure-bearing frame is provided at the rear end of the support. An upper pressure plate is provided at the top of the inside of the pressure-bearing frame, a lower pressure plate is provided at the bottom of the inside of the pressure-bearing frame, and a pushing component is provided at the rear end of the pressure-bearing frame.

[0006] Preferably, the upper part of the pressure-bearing frame is a semi-circular block design, and the lower part of the pressure-bearing frame is a semi-circular block design.

[0007] Preferably, the width inside the pressure-bearing frame matches the width of the support, and the pressure-bearing frame can translate outside the support.

[0008] Preferably, the pushing assembly includes a traveling cylinder disposed at the rear end of the high-pressure vessel cylinder, a first hinge seat hinged to the bottom of the traveling cylinder, a second hinge seat hinged to the output end at the front of the traveling cylinder, a push plate fixed to the front of the second hinge seat, and the push plate fixedly connected to the rear end of the bottom of the pressure-bearing frame.

[0009] Preferably, the pushing assembly further includes guide rails disposed on both sides of the bottom of the support, a support block disposed on the top of the guide rail, the support block being fixed to both sides of the pressure-bearing frame, and sliding blocks being fixed to the front and rear ends of the support block, and the sliding blocks being slidably disposed on the guide rail.

[0010] Preferably, there are two guide rails, which are symmetrical on both sides of the center line of the support.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model provides a dual-medium cold isostatic press system. By incorporating an oil-water isolation device including a barrel opening, an isolation sleeve, a barrel bottom, and a support barrel, the pressurizing medium is separated from the working medium. The isolation sleeve is made of oil-resistant nitrile rubber, and the barrel opening has an external hanging structure, effectively preventing oil-water mixing and contamination. This design avoids equipment corrosion caused by cross-contamination of the media, reduces sealing failures due to impurities in the media, lowers equipment maintenance frequency and costs, and ensures the stability of the media performance during the pressing process.

[0013] 2. This utility model provides a dual-medium cold isostatic pressing system. The pressure-bearing frame adopts a prestressed steel wire winding composite structure, with a load-bearing capacity of 5542t. Combined with the sliding design of the connecting blocks on both sides, sliding blocks, and guide rails, precise movement is achieved through the pushing action of the traveling hydraulic cylinder. It is equipped with points for moving out / in to the correct position and for over-limit control. This structure ensures stable axial force bearing of the frame while achieving automated movement of the pressure-bearing frame, simplifying the workpiece loading and unloading process, improving operational efficiency, avoiding collision risks during movement, and enhancing the stability of equipment operation.

[0014] The upper and lower plugs adopt a floating structure, with the lower plug featuring a rectangular spring return design. Both utilize a combined high-pressure sealing structure. The floating design adapts to pressure changes within the container, reducing localized wear on the seals. The combined sealing structure enhances sealing reliability under high pressure, reducing the risk of leakage. The lower plug spring return mechanism, in conjunction with the upper plug lifting mechanism (controlled by a non-contact proximity switch), automates the container's closing and opening operations, improving the smoothness of equipment operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0016] Figure 2This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0017] Figure 3 This is a partial structural schematic diagram of the present invention;

[0018] Figure 4 This is a front view of the structural cross-section of this utility model.

[0019] The following are the annotations in the diagram: 1. Support; 2. High-pressure vessel body; 21. Upper plug; 22. Lifting mechanism; 23. Lower plug; 24. Isolation tank; 25. Tank opening; 26. Tank bottom; 27. Exhaust assembly; 3. Pressure-bearing frame; 31. Upper pressure plate; 32. Lower pressure plate; 4. Traveling cylinder; 41. Hinge seat one; 42. Push plate; 43. Hinge seat two; 5. Support block; 51. Sliding block; 52. Guide rail. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0022] Combination Figures 1 to 4 As shown, the present invention discloses a dual-medium cold isostatic press system, comprising a support 1, a high-pressure vessel cylinder 2, and a pressure-bearing frame 3. The high-pressure vessel cylinder 2 is mounted at the front end of the top of the support 1. An upper plug 21 is mounted at the top of the high-pressure vessel cylinder 2. A lifting mechanism 22 is mounted at one end of the bottom of the upper plug 21 and is installed on the side wall of the high-pressure vessel cylinder 2. An exhaust assembly 27 is mounted at the other end of the upper plug 21. A lower plug 23 is mounted at the bottom of the high-pressure vessel cylinder 2. An isolation barrel 24 is mounted inside the high-pressure vessel cylinder 2. An opening 25 is mounted at the top of the isolation barrel 24 and a bottom 26 is mounted at the bottom of the isolation barrel 24. A pressure-bearing frame 3 is mounted at the rear end of the support 1. An upper pressure plate 31 is mounted at the top of the inside of the pressure-bearing frame 3, and a lower pressure plate 32 is mounted at the bottom of the inside of the pressure-bearing frame 3. A pushing assembly is mounted at the rear end of the pressure-bearing frame 3.

[0023] The upper part of the pressure-bearing frame 3 is a semi-circular block design, and the lower part of the pressure-bearing frame 3 is a semi-circular block design.

[0024] The width inside the pressure frame 3 matches the width of the support 1, and the pressure frame 3 can translate outside the support 1.

[0025] The pushing assembly includes a traveling cylinder 4 located at the rear end of the high-pressure vessel cylinder 2. The bottom of the traveling cylinder 4 is hinged to a first hinge seat 41, and the output end at the front of the traveling cylinder 4 is hinged to a second hinge seat 43. A push plate 42 is fixed to the front of the second hinge seat 43, and the push plate 42 is fixedly connected to the rear end of the bottom of the pressure-bearing frame 3.

[0026] The pushing assembly also includes guide rails 52 disposed on both sides of the bottom of the support 1. A support block 5 is disposed on the top of the guide rail 52. The support block 5 is fixed to both sides of the pressure-bearing frame 3. Sliding blocks 51 are fixed at the front and rear ends of the support block 5, and the sliding blocks 51 are slidably disposed on the guide rail 52.

[0027] There are two guide rails 52, which are symmetrical on both sides of the center line of the support 1.

[0028] Specifically,

[0029] (a) Ultra-high pressure vessels

[0030] The high-pressure vessel cylinder 2 is made of ultra-high-pressure cylinder pre-stressed winding of high-strength steel wire, bearing the working pressure during product pressing, with a maximum working pressure of 400MPa. Strictly calculated material properties and prestress values ​​ensure that the cylinder remains under compressive stress even at the maximum working pressure, guaranteeing safety and reliability. The effective volume of the pressing cylinder after winding is Ø420×2000mm.

[0031] The oil-water isolation device consists of an isolation tank 24, a tank opening 25, and a tank bottom 26. The isolation tank 24 of the oil-water isolation device is made of oil-resistant nitrile rubber used in aircraft fuel tanks, with a design life of ≥2 years and an elongation rate of ≥300%.

[0032] The oil-water separator separates the pressurized medium (such as hydraulic oil) from the working medium (such as engine oil), preventing particles from the working medium from entering the hydraulic system during depressurization, thus avoiding erosion of hydraulic valves, extending valve life, and reducing operating costs. The pressed component is placed inside the separator and pressurized in the working medium. Through deformation of the separator, the pressurized medium transfers pressure to both the working medium and the component. The effective volume of the separator is Ø350×1920mm.

[0033] The upper plug 21 and lower plug 23 of the ultra-high pressure vessel adopt a floating structure. The upper plug 21 adopts a floating structure for hydraulic lifting. After the press is depressurized, the upper plug 21 can automatically return to its original position. The lower plug 23 adopts a rectangular spring structure for return, realizing free floating.

[0034] The upper plug 21 is equipped with an exhaust assembly 27. When the pre-pressurization pump group fills the cylinder with liquid, the residual air in the ultra-high pressure container is discharged through the exhaust port. The ultra-high pressure container is filled with liquid. After the air is exhausted, a small amount of liquid is discharged from the exhaust port. The exhaust valve core closes under the action of the liquid pressure difference at both ends, and the exhaust stops automatically.

[0035] Conversely, after the pressure relief is completed, the exhaust valve core automatically opens to discharge the compressed gas, the upper plug 21 descends to reset, and the lower plug 23 rises to reset and activates.

[0036] The upper plug 21 is raised and lowered into position using a non-contact proximity switch, while the lower plug 23 is raised into position using a micro-motion contact switch.

[0037] The high-pressure seals of the upper plug 21 and lower plug 23 employ a combined sealing structure. The ultra-high-pressure sealing ring is made of centrifugally cast aluminum bronze with a design life of ≥1 year; the YX-shaped sealing ring is made of rubber with a design life of ≥1 year. Steel pressure plates are used for fixation to facilitate maintenance and replacement.

[0038] The cylinder material is 25Cr2Ni4MoV, a high-quality alloy forging, quenched and tempered. The mechanical properties and flaw detection requirements are as follows:

[0039] Mechanical properties: σb≥1250MPa; σs≥1100MPa; δ5≥14%; ψ≥45%; Aκ≥38J;

[0040] Ultrasonic flaw detection shall be performed in accordance with Level I of JB4730-94;

[0041] Metallographic testing requirements: grain size not lower than grade 5, oxides and sulfides less than grade 2 each, total not greater than grade 3.5, non-metallic inclusions to be inspected according to JB / ZQ6122-87;

[0042] The forging ratio shall not be less than 3, and welding repair is not allowed for forging defects. All other provisions shall be implemented in accordance with the provisions of JB / ZQ6203-89.

[0043] The mechanical properties and requirements for 65Mn wound steel wire are as follows:

[0044] σb≥1620kg / cm2, δ100≥3%;

[0045] Specifications: 1.5×5 (mm), cross-sectional dimensions should be uniform, rolled material must not have cracks, folds, rust, twisting, or local scratches or punctures with a depth less than the negative deviation of the cross-sectional dimensions. Weight of each coil of steel wire ≥ 800 kg.

[0046] Both upper plug 21 and lower plug 23 are made of 25Cr2Ni4MoV alloy forgings, heat-treated, with the following mechanical properties and flaw detection requirements:

[0047] Mechanical properties: σb≥1250MPa; σs≥1100MPa; δ5≥14%; ψ≥45%; Aκ≥38J;

[0048] Ultrasonic testing shall be performed in accordance with the Class I requirements of JB4730-94; the rest shall be performed in accordance with the Class I requirements for forgings of JB4726-2000.

[0049] Metallographic testing requirements: grain size not lower than grade 5, oxides and sulfides less than grade 2 each, total not greater than grade 3.5, non-metallic inclusions to be inspected according to JB / ZQ6122-87;

[0050] The forging ratio shall not be less than 3, and welding repair is not allowed for forging defects. All other provisions shall be implemented in accordance with the provisions of JB / ZQ6203-89.

[0051] (ii) Pressure-bearing frame 3

[0052] The load-bearing frame adopts a prestressed steel wire winding composite structure. The frame consists of two left and right columns and two upper and lower semi-circular beams wound with steel wire, and can bear a load of 5542t.

[0053] The upper semi-circular block of the frame covers ≥95% of the upper and lower end caps. No gaps are allowed between the semi-circular block and the support column under maximum working pressure.

[0054] The upper and lower semi-circular beams of the frame bear the axial force transmitted by the upper plug 21 and the lower plug 23. The joint is equipped with an upper pressure plate 31 and a lower pressure plate 32.

[0055] The load-bearing columns and semi-circular beams of the pressure frame are all made of 42CrMo forgings, quenched and tempered, with the following mechanical properties and flaw detection requirements:

[0056] σb≥750MPa; σS≥500MPa; δ5≥14%; ψ≥50%; Aκ≥35J.

[0057] Ultrasonic flaw detection shall be performed in accordance with Level II of NB / T47013.3-2015.

[0058] The forging ratio shall not be less than 3, and welding repair is not allowed for forging defects. All other provisions shall be implemented in accordance with the provisions of JB / ZQ6203-89.

[0059] The mechanical properties and requirements for 65Mn wound steel wire are as follows:

[0060] σb≥1620kg / cm2, δ100≥3%;

[0061] Specifications: 1.5×5 (mm), the cross-sectional dimensions should be uniform, and the rolled material shall not have cracks, folds, rust, twists, or local scratches or punctures with a depth less than the negative deviation of the cross-sectional dimensions.

[0062] Each coil of steel wire weighs ≥800kg.

[0063] (iii) Walking mechanism, used to drive the pressure-bearing frame 3 to move. It consists of walking cylinder 4, support block 5, sliding block 51, guide rail 52, etc. The pressure-bearing frame 3 is placed in the support 1.

[0064] The hydraulic cylinder pushes the frame seat and the pressure-bearing frame to move on the guide rail 52. Manual and automatic control are available.

[0065] Control points are set for movement to stop when the movement is in place, movement exceeding the limit when the movement is out of place, movement to the limit when the movement is in place, and movement exceeding the limit when the movement is in place. Non-contact proximity switches are used for control.

[0066] (iv) Upgrading Institution 22

[0067] The lifting mechanism 22 consists of a hydraulic cylinder, a rotating sleeve, a lifting arm, etc., which drives the upper plug 21 to open and close.

[0068] The upper piston 21 is driven by a hydraulic cylinder and a lifting arm to move in the direction of the rotating groove on the rotating cylinder. Control points are set for the upper piston 21 to be raised and lowered to the correct position, and manual and automatic control are provided.

[0069] Furthermore,

[0070] Place the workpiece to be pressed into the isolation sleeve of the oil-water isolation device and place it in the working medium. Start the walking cylinder 4 to push the pressure frame 3 to move it to the outside of the high pressure container 2. The pressure plates cover the upper plug 61 and the lower plug 63 respectively to bear the axial force transmitted by the upper plug 61 and the lower plug 63.

[0071] The lifting mechanism 22 drives the upper plug 61 to descend and close the high-pressure container cylinder 2. The lower plug 63 is reset by a rectangular spring structure. Both the upper plug 61 and the lower plug 63 adopt a floating structure.

[0072] Liquid is filled into the high-pressure container cylinder 2. The residual air in the container is discharged through the exhaust assembly 27 of the upper plug 61 until a small amount of liquid is discharged from the exhaust port, and the exhaust valve core automatically closes.

[0073] During depressurization, the remaining liquid in the high-pressure container cylinder 2 is extracted until the upper plug 61 is opened and then stopped. At the same time, the gas generated by the pressing component is discharged, the upper plug 61 descends to reset, and the lower plug 63 rises to reset.

[0074] The pressure-bearing frame 3 is moved out by the traveling hydraulic cylinder 4, the upper plug 61 is opened, and the pressed part is taken out.

[0075] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0076] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-medium cold isostatic press system, comprising a support (1), a high-pressure vessel cylinder (2), and a pressure-bearing frame (3), characterized in that: The support (1) has a high-pressure container body (2) at the front end of its top. The high-pressure container body (2) has an upper plug (21) at its top. The upper plug (21) has a lifting mechanism (22) at one end of its bottom. The lifting mechanism (22) is installed on the side wall of the high-pressure container body (2). The upper plug (21) has an exhaust assembly (27) at the other end. The high-pressure container body (2) has a lower plug (23) at its bottom. The high-pressure container body (2) has an isolation barrel (24) inside its interior. The isolation barrel (24) has a barrel opening (25) at its top and a barrel bottom (26) at its bottom. The support (1) has a pressure-bearing frame (3) at its rear end. The pressure-bearing frame (3) has an upper pressure plate (31) at its top end and a lower pressure plate (32) at its bottom end. The pressure-bearing frame (3) has a pushing assembly at its rear end.

2. The dual-medium cold isostatic press system according to claim 1, characterized in that: The upper part of the pressure-bearing frame (3) is a semi-circular block design, and the lower part of the pressure-bearing frame (3) is a semi-circular block design.

3. The dual-medium cold isostatic press pressing system according to claim 1, characterized in that: The width inside the pressure-bearing frame (3) matches the width of the support (1), and the pressure-bearing frame (3) can translate outside the support (1).

4. The dual-medium cold isostatic press pressing system according to claim 1, characterized in that: The pushing assembly includes a traveling cylinder (4) located at the rear end of the high-pressure vessel cylinder (2). The bottom of the traveling cylinder (4) is hinged to a first hinge seat (41), and the output end of the front of the traveling cylinder (4) is hinged to a second hinge seat (43). A push plate (42) is fixed to the front of the second hinge seat (43), and the push plate (42) is fixedly connected to the rear end of the bottom of the pressure-bearing frame (3).

5. The dual-medium cold isostatic press system according to claim 1, characterized in that: The pushing assembly also includes guide rails (52) set on both sides of the bottom of the support (1). A support block (5) is set on the top of the guide rail (52). The support block (5) is fixed on both sides of the pressure frame (3). Sliding blocks (51) are fixed at the front and rear ends of the support block (5), and the sliding blocks (51) are slidably set on the guide rail (52).

6. The dual-medium cold isostatic press system according to claim 5, characterized in that: There are two guide rails (52), which are symmetrical on both sides of the centerline of the support (1).

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