Upper sealing cover connecting mechanism for cold isostatic press and cold isostatic press

Abstract

The utility model discloses an upper sealing cover connecting mechanism for a cold isostatic press and the cold isostatic press, and belongs to the technical field of cold isostatic presses. The upper sealing cover connecting mechanism for the cold isostatic press comprises a connecting plate and an upper plug, and the connecting plate and the upper plug are detachably connected through an upper plug connecting block. In addition, a guide column mounting block is mounted on the side wall of the connecting plate, and the connecting plate is further connected with a vertical guide column through the mounting block. A mounting through hole is formed in one end of the connecting plate, and the connecting plate is connected with the lifting mechanism through a connecting sleeve mounted on the through hole, so that the upper sealing cover connecting mechanism for the cold isostatic pressing machine can ascend and descend along with the action of the lifting mechanism. According to the design, through the arrangement of the upper plugging connecting block and the guide column mounting block, the requirement for machining precision of parts is lowered, assembling and adjusting convenience is improved, and material consumption and weight are reduced. And through the design of the weight reducing groove, the weight of the connecting plate is effectively reduced, and the gravity center distribution of the upper sealing cover connecting mechanism for the cold isostatic pressing machine is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cold isostatic press, more particularly, relate to a cold isostatic press with upper seal cover connecting mechanism and cold isostatic press. BACKGROUND

[0002] Cold isostatic press is a kind of equipment commonly used in metal powder forming, ceramic powder forming and other materials preparation under high pressure environment, and its working principle is to apply pressure uniformly by liquid medium, so that the material in the clamped mould is formed under isostatic pressure.Cold isostatic press is widely used in aerospace, automobile manufacturing, electronic components and other fields, with the characteristics of high precision, high density and uniformity.However, with the continuous improvement of the performance requirements of the equipment, the design and manufacture of cold isostatic press also face more and more challenges.

[0003] The cold isostatic press in the prior art usually adopts an upper seal cover connecting mechanism to connect and fix the upper seal cover with other components, and such connecting mechanism generally adopts bolts to directly fix the connecting plate and the upper seal cover together, which is simple in structure.However, such design requires high machining precision of the connecting plate and the upper seal cover, which brings certain difficulties and cost increase to manufacturing and assembly.In addition, as an important guide part, the guide pillar is usually directly fixed and connected to the lower surface of the connecting plate, and such design not only increases the width and material consumption of the connecting plate and the manufacturing difficulty, but also increases the overall weight of the upper seal cover connecting mechanism to some extent, so that it is inconvenient for workers to adjust and maintain in the later stage.These problems limit the manufacturing efficiency and overall performance of the equipment. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of upper seal cover connecting mechanism and cold isostatic press for overcoming the above-mentioned problems in prior art.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] A kind of upper seal cover connecting mechanism for cold isostatic press, the upper seal cover connecting mechanism for cold isostatic press includes connecting plate and upper seal cover, wherein:

[0007] One end of the connecting plate and the upper seal cover are detachably connected by upper seal cover connecting block;

[0008] The sidewall of the connecting plate is detachably mounted with guide pillar mounting block, and vertical guide pillars are installed on the guide pillar mounting block;

[0009] Another end of the connecting plate is provided with mounting through hole, and adapter sleeve is installed on the mounting through hole, and the adapter sleeve is used to connect the lifting mechanism, so as to drive the upper seal cover connecting mechanism for cold isostatic press to lift.

[0010] Further, the upper sealing connection block is provided with a first mounting hole and at least one first through hole;

[0011] The upper sealing is provided with a second mounting hole corresponding to the position of the first mounting hole;

[0012] Optionally, the first mounting hole is a stepped hole, which is divided into a large-diameter section and a small-diameter section from outside to inside, and the small-diameter section of the stepped hole is provided with internal threads, so that the second fastener is threadedly connected with the small-diameter section of the stepped hole; the second mounting hole is not provided with internal threads, and one end of the second fastener extends into the second mounting hole; in operation, the upper sealing has one degree of freedom of rotation, and the first mounting hole and the second mounting hole are designed in this way to facilitate the smooth closing of the working cavity of the floating and cold isostatic pressing machine;

[0013] The connecting plate is provided with a first threaded hole corresponding in position and in number to the first through hole;

[0014] One end of the upper sealing connection block is connected to the upper sealing through the second fastener penetrating the first mounting hole and the second mounting hole, and the second fastener is provided with external threads;

[0015] The other end of the upper sealing connection block is connected to the connecting plate through the first fastener penetrating the first through hole and the first threaded hole, and the first fastener is provided with external threads.

[0016] Further, the number of the upper sealing connection blocks is two, and the two upper sealing connection blocks are respectively arranged on the two sides of one end of the connecting plate close to the upper sealing;

[0017] The number of the first through holes is four, and the four first through holes are uniformly arranged at one end of the upper sealing connection block connected to the connecting plate.

[0018] Further, the guide column mounting block is an L-shaped mounting block, which includes a vertical plate and a bottom plate connected perpendicularly;

[0019] The vertical plate of the guide column mounting block is provided with at least one second through hole;

[0020] The bottom plate of the guide column mounting block is provided with a third through hole;

[0021] The connecting plate is provided with a second threaded hole corresponding in position and in number to the second through hole;

[0022] The top end of the guide column is provided with a third threaded hole corresponding to the third through hole;

[0023] The vertical plate of the guide pillar mounting block is connected to the connecting plate by a third fastener penetrating the second through hole and the second threaded hole, the third fastener being provided with external threads;

[0024] The bottom plate of the guide pillar mounting block is connected to the top end of the guide pillar by a fourth fastener penetrating the third through hole and the third threaded hole, the fourth fastener being provided with external threads.

[0025] Further, the number of the guide pillar mounting blocks is two, and the two guide pillar mounting blocks are respectively arranged on the two sides of the connecting plate;

[0026] The number of the second through holes is four, and the four second through holes are uniformly arranged on the vertical plate of the guide pillar mounting block.

[0027] Further, the adapter sleeve is a double-layer annular structure, which includes a first annular structure and a second annular structure integrally formed, the outer diameter of the first annular structure being greater than the inner diameter of the mounting through hole;

[0028] The second annular structure is located in the mounting through hole;

[0029] A plurality of fourth through holes are formed on the first annular structure, and a plurality of fourth threaded holes corresponding in position and number to the fourth through holes are formed on the connecting plate;

[0030] The adapter sleeve is connected to the connecting plate by a fifth fastener penetrating the fourth through hole and the fourth threaded hole, the fifth fastener being provided with external threads.

[0031] Further, the number of the fourth through holes is six, and the six fourth through holes are uniformly arranged on the first annular structure.

[0032] Further, a plurality of weight-reducing grooves are formed on the lower surface of the connecting plate.

[0033] A cold isostatic pressing machine, comprising the upper sealing cover connecting mechanism for a cold isostatic pressing machine.

[0034] Further, the cold isostatic pressing machine further comprises a working cavity and a lifting mechanism;

[0035] A flange plate is arranged on the periphery of the top end of the working cavity, a plurality of guide through holes corresponding in position and number to the guide pillars are formed on the flange plate, and the guide pillars are configured to be capable of lifting in the guide through holes;

[0036] The upper sealing cover is used for sealing the top end opening of the working cavity;

[0037] The lifting mechanism is located at one side of the working cavity, an output end of the lifting mechanism is fixedly connected with the connecting plate, and the lifting mechanism is configured to drive the connecting plate to lift, thereby driving the upper sealing cover connecting mechanism for the cold isostatic pressing machine to lift.

[0038] Compared with the prior art, the beneficial effects of the technical scheme of the utility model are:

[0039] The utility model provides a kind of upper sealing cover connecting mechanism for cold isostatic pressing machine and cold isostatic pressing machine, significantly reduce the processing difficulty and precision requirement, improve the convenience of assembly and adjustment of part.It is more efficient to maintain and replace by its detachable combination design, while reducing weight and optimizing the distribution of gravity, improve the simplicity and stability of operation.The upper sealing cover connecting mechanism for cold isostatic pressing machine of the utility model is applied to cold isostatic pressing machine, realizes more efficient and reliable plugging and lifting operation, significantly improves the overall performance and service life of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the description of embodiments or prior art will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating labor.

[0041] Figure 1 It is the structure schematic view of the upper sealing cover connecting mechanism for cold isostatic pressing machine provided in an embodiment of the application;

[0042] Figure 2 It is the structure schematic view of another view of the upper sealing cover connecting mechanism for cold isostatic pressing machine provided in an embodiment of the application;

[0043] Figure 3 It is the structure schematic view of the connecting sleeve in the upper sealing cover connecting mechanism for cold isostatic pressing machine provided in an embodiment of the application;

[0044] Figure 4 It is the structure schematic view of the upper sealing cover connecting mechanism for cold isostatic pressing machine provided in an embodiment of the application;

[0045] Figure 5 It is the installation schematic view of the upper sealing cover connecting mechanism for cold isostatic pressing machine, working cavity and lifting mechanism in the cold isostatic pressing machine provided in an embodiment of the application;

[0046] Mark explanation in figure:

[0047] 1, connecting plate;2, upper sealing cover;

[0048] 3, upper blocking connecting block; 301, first through hole; 302, first mounting hole;

[0049] 4, guide column mounting block; 401, second through hole; 402, third through hole;

[0050] 5, guide column;

[0051] 6, adapter sleeve; 601, first annular structure; 602, second annular structure;

[0052] 7, weight reduction groove;

[0053] 8, working cavity; 801, flange plate; 8011, guide through hole;

[0054] 9, lifting mechanism. DETAILED DESCRIPTION

[0055] In order to better understand the purpose, structure and function of the utility model, the technical scheme of the utility model will be described in further detail below in combination with the drawings and specific preferred embodiments.

[0056] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "left side", "right side", "upper part", "lower part" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and "first", "second" and the like do not represent the importance of the parts, so it cannot be understood as a limitation on the utility model. The specific dimensions used in the embodiments are only used to illustrate the technical scheme and do not limit the protection scope of the utility model. For those skilled in the art, it is understandable that some well-known structures in the drawings and their descriptions can be omitted.

[0057] Unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0058] Embodiment 1:

[0059] As shown in Figure 1 The utility model provides a technical scheme:

[0060] The utility model provides a cold isstatic pressure machine with upper seal cover connecting mechanism, the cold is static pressure machine with upper seal cover connecting mechanism includes connecting plate 1 and upper seal 2, wherein:

[0061] The connecting plate 1 one end and the upper seal 2 between through upper seal connecting block 3 detachable connection;

[0062] The sidewall of connecting plate 1 detachable installation guide pillar mounting block 4, the vertical guide pillar 5 of being installed on guide pillar mounting block 4;

[0063] The function of guide pillar 5 is to guide the upper seal 2, keep horizontal and stable in the process of lifting, avoid deviation;

[0064] The other end of connecting plate 1 is provided with mounting through hole, the mounting through hole is installed with the link sleeve 6, and the link sleeve 6 is used to link the lifting mechanism, to drive the cold isstatic pressure machine with upper seal cover connecting mechanism lifting.

[0065] In the prior art, the connecting plate 1 and the upper seal 2 are directly connected by screws without the upper seal connecting block 3 and the guide pillar mounting block 4, which requires high machining precision of the connecting plate 1 and the upper seal 2 and has a certain machining difficulty;

[0066] In the embodiment, the upper seal connecting block 3 and the guide pillar mounting block 4 are provided, so that the machining difficulty of the parts is reduced, and the precision requirement is not so high. In the technical scheme of the embodiment, the connection position of the upper seal connecting block 3, the guide pillar mounting block 4 and the connecting plate 1 can be adjusted, and the installation difficulty in the later stage is reduced;

[0067] In the prior art, the guide pillar 5 is directly fixedly connected to the lower surface of the connecting plate 1 without being connected through the guide pillar mounting block 4, and the installation position of the guide pillar 5 cannot be adjusted in the later stage;

[0068] In the embodiment, the guide pillar 5 is mounted on the sidewall of the connecting plate 1 through the guide pillar mounting block 4, which can reduce the width of the connecting plate 1, save the material of the connecting plate 1, and reduce the overall weight of the cold isstatic pressure machine with upper seal cover connecting mechanism. Moreover, the installation position of the guide pillar 5 can be easily adjusted in the later stage.

[0069] The connecting plate 1, the upper seal 2, the upper seal connecting block 3, the guide pillar mounting block 4 and the guide pillar 5 in the embodiment are detachably connected, which is convenient for adjusting the accessories or replacing the worn accessories after sale.

[0070] Embodiment 2:

[0071] On the basis of embodiment 1, referring to Figure 1 The upper seal connecting block 3 is provided with a first mounting hole 302 and at least one first through hole 301.

[0072] The upper sealing 2 is provided with a second mounting hole corresponding to the position of the first mounting hole 302;

[0073] Optionally, the first mounting hole 302 is a stepped hole, which is divided into a large-diameter section and a small-diameter section from outside to inside, and the small-diameter section of the stepped hole is provided with internal threads, so that the second fastener is threadedly connected with the small-diameter section of the stepped hole; the second mounting hole is not provided with internal threads, and one end of the second fastener extends into the second mounting hole; in operation, the upper sealing 2 has one degree of freedom of rotation, and the design of the first mounting hole 302 and the second mounting hole can facilitate the smooth closing of the working cavity of the floating and cold isostatic pressing machine (the working cavity hole opening part has a guide arc);

[0074] The connecting plate 1 is provided with a first threaded hole corresponding in position and in number to the first through hole 301;

[0075] One end of the upper sealing connecting block 3 is connected to the upper sealing 2 through the second fastener penetrating the first mounting hole 302 and the second mounting hole, and the second fastener is provided with external threads;

[0076] The other end of the upper sealing connecting block 3 is connected to the connecting plate 1 through the first fastener penetrating the first through hole 301 and the first threaded hole, and the first fastener is provided with external threads.

[0077] Further, the number of the upper sealing connecting block 3 is two, and the two upper sealing connecting blocks 3 are respectively arranged on both sides of one end of the connecting plate 1 close to the upper sealing 2; the arrangement of the two upper sealing connecting blocks 3 makes the overall structure more stable and shares the stress, thereby enhancing the reliability and durability of the device;

[0078] The number of the first through hole 301 is four, and the four first through holes 301 are uniformly arranged at one end of the connecting plate 1 connected with the upper sealing connecting block 3; this design disperses the stress points of the connection, makes the stress of the entire connection structure uniform, and increases the reliability and stability of the connection.

[0079] Through the above improvements, the embodiment not only ensures the stable connection between the upper sealing 2 and the connecting plate 1, but also improves the convenience of maintenance and adjustment of the equipment because each part can be independently disassembled and adjusted. In addition, the design of multiple through holes and threaded holes also makes the installation more flexible, and the positions of each component can be fine-tuned as needed, thereby improving the overall precision and operation stability of the equipment.

[0080] Embodiment 3:

[0081] On the basis of embodiment 1, reference is made to Figure 1The guide pillar mounting block 4 is an L-shaped mounting block, which comprises a vertical plate and a bottom plate connected vertically;

[0082] The vertical plate of the guide pillar mounting block 4 is provided with at least one second through hole 401;

[0083] The bottom plate of the guide pillar mounting block 4 is provided with a third through hole 402;

[0084] The connecting plate 1 is provided with second threaded holes corresponding in position and number to the second through holes 401;

[0085] The top end of the guide pillar 5 is provided with a third threaded hole corresponding to the third through hole 402;

[0086] The vertical plate of the guide pillar mounting block 4 is connected to the connecting plate 1 through third fasteners penetrating the second through holes 401 and the second threaded holes, and the third fasteners are provided with external threads;

[0087] The bottom plate of the guide pillar mounting block 4 is connected to the top end of the guide pillar through fourth fasteners penetrating the third through hole 402 and the third threaded hole, and the fourth fasteners are provided with external threads.

[0088] Further, the number of the guide pillar mounting block 4 is two, and the two guide pillar mounting blocks 4 are respectively arranged on the two sides of the connecting plate 1; this design not only enhances the fixing performance of the guide pillar 5, but also ensures the balance and stability of the entire cold isostatic pressing machine upper cover connecting mechanism; the symmetrical arrangement of the two guide pillar mounting blocks 4 makes the entire system more balanced during lifting, reducing friction and wear caused by deviation;

[0089] The number of the second through holes 401 is four, and the four second through holes 401 are evenly arranged on the vertical plate of the guide pillar mounting block 4.

[0090] During installation, the top end of the guide pillar is first bolted below the bottom plate of the guide pillar mounting block 4; then four screws are respectively passed through the four second through holes 401 and the four second threaded holes to connect the vertical plate of the guide pillar mounting block 4 to the connecting plate 1.

[0091] Embodiment 4:

[0092] On the basis of Embodiment 1, referring to Figure 1 and Figure 3 The adapter sleeve 6 is a double-layer annular structure, which comprises a first annular structure 601 and a second annular structure 602 integrally formed, and the outer diameter of the first annular structure 601 is greater than the inner diameter of the mounting through hole;

[0093] The first annular structure 601 is located above the mounting through hole, and the second annular structure 602 is located in the mounting through hole;

[0094] A plurality of fourth through holes are formed in the first annular structure 601, and a plurality of fourth threaded holes corresponding in position and number to the fourth through holes are formed in the connecting plate 1.

[0095] The connecting sleeve 6 is connected to the connecting plate 1 through fifth fasteners penetrating the fourth through holes and the fourth threaded holes, and the fifth fasteners are provided with external threads.

[0096] Further, the number of the fourth through holes is six, and the six fourth through holes are uniformly arranged on the first annular structure 601.

[0097] Through the above design, in the connection with the lifting mechanism, the connecting sleeve 6 of the present embodiment can more effectively bear and disperse the stress generated in the working process, improve the stability and durability of the connection, and further improve the service life and reliability of the upper cover connecting mechanism for the cold isostatic press.

[0098] Embodiment 5:

[0099] On the basis of embodiment 1, referring to Figure 2 A plurality of weight reduction grooves 7 are formed in the lower surface of the connecting plate 1.

[0100] The number and position of the weight reduction grooves 7 can be designed and adjusted according to actual needs; the specific shape of the weight reduction grooves 7 can be rectangular, circular or other suitable geometric shapes, which is determined according to the stress condition and manufacturing process of the connecting plate 1.

[0101] The weight reduction grooves 7 have two functions, the first is to reduce the weight of the connecting plate 1, which is convenient for workers to disassemble later; the second is to balance the center of gravity, so that the center of gravity of the upper cover connecting mechanism for the cold isostatic press moves to the side close to the upper sealing cover 2, which can reduce the equipment shaking and deviation caused by unstable center of gravity in actual use, and improve the stability and safety of the overall operation.

[0102] Embodiment 6:

[0103] The utility model provides a technical scheme:

[0104] A cold isostatic press, the cold isostatic press includes the upper cover connecting mechanism for the cold isostatic press.

[0105] Further, as shown in Figures 4-5 The cold isostatic press further includes a working cavity 8 and a lifting mechanism 9.

[0106] The top end of the working cavity 8 is provided with a flange plate 801, and a plurality of guide through holes 8011 corresponding in position to the guide columns 5 are formed in the flange plate 801, and the guide columns 5 are configured to be capable of ascending and descending in the guide through holes 8011;

[0107] The upper sealing cover 2 is used for sealing the top end opening of the working cavity 8, so as to ensure that the pressurized liquid in the working cavity 8 does not leak.

[0108] The lifting mechanism 9 is located on one side of the working cavity 8, the output end of the lifting mechanism 9 is fixedly connected with the connecting plate 1, and the lifting mechanism 9 is configured to drive the connecting plate 1 to ascend and descend, thereby driving the upper sealing cover connecting mechanism of the cold isostatic pressing machine to ascend and descend.

[0109] Further, a piston rod is arranged in the lifting mechanism 9, the piston rod is connected with the adapter sleeve 6 at a portion above the connecting plate 1, and a tray is connected with the piston rod at a portion below the connecting plate 1.

[0110] A threaded hole is formed in the middle portion of the adapter sleeve 6, the piston rod is threadedly connected with the threaded hole, and the piston rod can be adjusted up and down by rotating; the lower end surface of the first annular structure 601 and the outer side surface of the second annular structure 602 form a stepped structure capable of abutting against the upper end surface of the connecting plate 1, thereby enabling the connecting plate 1 to move downward through the stepped structure;

[0111] The tray is a disc-shaped hollow structure, an inner thread is arranged in the hollow portion of the tray, and the upper surface of the tray is a plane; the piston rod is threadedly connected with the tray, and the upper surface of the tray is capable of abutting against the lower end surface of the connecting plate 1, thereby enabling the connecting plate 1 to move upward through the tray;

[0112] Compared with the prior art, the piston rod in the application does not directly contact the connecting plate 1, and the stress of the piston rod is more uniform, and stress concentration does not occur.

[0113] Further, the lifting mechanism 9 can be an oil cylinder or other linear driving device, and the working principle thereof is to drive the piston rod to extend and retract through hydraulic or electric driving, so as to drive the connecting plate 1 and the upper sealing cover connecting mechanism of the cold isostatic pressing machine, and realize the sealing and opening operation of the top end opening of the working cavity.

[0114] Further, the cold isostatic pressing machine further comprises a pressure increasing mechanism, the pressure increasing mechanism is used for providing pressurized liquid to the working cavity 8, so as to provide appropriate pressure to the mold in the working cavity 8.

[0115] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. An upper cover connection mechanism for a cold isostatic press, characterized in that: The upper cover connection mechanism for a cold isostatic press comprises a connection plate (1) and an upper seal (2), wherein: One end of the connecting plate (1) and the upper plug (2) are detachably connected via an upper plug connecting block (3); A guide column mounting block (4) is detachably mounted on the side wall of the connecting plate (1), and a vertical guide column (5) is mounted on the guide column mounting block (4); The other end of the connecting plate (1) is provided with a mounting through hole, and a connecting sleeve (6) is installed on the mounting through hole. The connecting sleeve (6) is used to connect the lifting mechanism, thereby driving the upper cover connecting mechanism of the cold isostatic press to move up and down.

2. The upper cover connecting mechanism for a cold isostatic press according to claim 1, characterized in that: The upper blocking connection block (3) is provided with a first mounting hole (302) and at least one first through hole (301); The upper plug (2) is provided with a second mounting hole corresponding to the position of the first mounting hole (302); The connecting plate (1) is provided with first threaded holes corresponding in position and number to the first through holes (301); One end of the upper sealing connection block (3) is connected to the upper sealing block (2) via a second fastener that penetrates the first mounting hole (302) and the second mounting hole, and the second fastener is provided with an external thread; The other end of the upper blocking connection block (3) is connected to the connection plate (1) via a first fastener penetrating the first through hole (301) and the first threaded hole, and the first fastener is provided with an external thread.

3. The upper cover connecting mechanism for a cold isostatic press according to claim 2, characterized in that: The number of the upper blocking connection blocks (3) is two, and the two upper blocking connection blocks (3) are respectively arranged on both sides of one end of the connection plate (1) close to the upper blocking (2); The number of the first through holes (301) is four, and the four first through holes (301) are evenly arranged at one end where the upper blocking connection block (3) is connected to the connection plate (1).

4. The upper cover connecting mechanism for a cold isostatic press according to claim 1, characterized in that: The guide column mounting block (4) is an L-shaped mounting block, which comprises a vertically connected vertical plate and a bottom plate; At least one second through hole (401) is provided on the vertical plate of the guide column mounting block (4); A third through hole (402) is provided on the bottom plate of the guide column mounting block (4); The connecting plate (1) is provided with second threaded holes corresponding in position and number to the second through holes (401); A third threaded hole adapted to the third through hole (402) is provided at the top end of the guide post (5); The vertical plate of the guide column mounting block (4) is connected to the connecting plate (1) via a third fastener that penetrates the second through hole (401) and the second threaded hole, and the third fastener is provided with an external thread; The bottom plate of the guide column mounting block (4) is connected to the top end of the guide column via a fourth fastener penetrating the third through hole (402) and the third threaded hole, and the fourth fastener is provided with an external thread.

5. The upper cover connecting mechanism for a cold isostatic press according to claim 4, characterized in that: The number of the guide column mounting blocks (4) is two, and the two guide column mounting blocks (4) are respectively arranged on both sides of the connecting plate (1); The number of the second through holes (401) is four, and the four second through holes (401) are evenly arranged on the vertical plate of the guide column mounting block (4).

6. The upper cover connecting mechanism for a cold isostatic press according to claim 1, characterized in that: The connecting sleeve (6) is a double-layer annular structure, comprising an integrally formed first annular structure (601) and a second annular structure (602), wherein the outer diameter of the first annular structure (601) is larger than the inner diameter of the mounting through hole; The second annular structure (602) is located in the mounting through hole; The first annular structure (601) is provided with a plurality of fourth through holes, and the connecting plate (1) is provided with fourth threaded holes corresponding in position and number to the fourth through holes; The connecting sleeve (6) is connected to the connecting plate (1) via a fifth fastener that penetrates the fourth through hole and the fourth threaded hole, and the fifth fastener is provided with an external thread.

7. The upper cover connecting mechanism for a cold isostatic press according to claim 6, characterized in that: The number of the fourth through holes is six, and the six fourth through holes are evenly arranged on the first annular structure (601).

8. The upper cover connecting mechanism for a cold isostatic press according to claim 1, characterized in that: A plurality of weight-reducing grooves (7) are provided on the lower surface of the connecting plate (1).

9. A cold isostatic press, characterized in that: The cold isostatic press comprises the upper cover connection mechanism for the cold isostatic press according to any one of claims 1 to 8.

10. The cold isostatic press according to claim 9, characterized in that The cold isostatic press further comprises a working chamber (8) and a lifting mechanism (9); A flange plate (801) is provided on the periphery of the top end of the working chamber (8), and the flange plate (801) is provided with guide holes (8011) corresponding in position and number to the guide pillars (5), and the guide pillars (5) are configured to be able to rise and fall in the guide holes (8011); The upper plug (2) is used to seal the top opening of the working chamber (8); The lifting mechanism (9) is located on one side of the working chamber (8), and the output end of the lifting mechanism (9) is fixedly connected to the connecting plate (1). The lifting mechanism (9) is configured to drive the connecting plate (1) to move up and down, thereby driving the upper cover connecting mechanism of the cold isostatic press to move up and down.

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