Ceramic guide rail cross beam mold

Abstract

The invention relates to the technical field of dies, and particularly discloses a ceramic guide rail cross beam die which comprises a die body, plug pieces are arranged at the two ends of the die body, and sealing gaskets are bonded to the plug pieces; a hanging ring is fixed on the mesh enclosure, a side door is arranged on the mesh enclosure, one side of the side door is connected with a main body of the mesh enclosure through a pivoting piece, the other side of the side door is fixed with the main body of the mesh enclosure through a fixing pin, and the mesh enclosure is fixedly connected with the bottom plate through a support; a threaded hole is formed in the top end of the core shaft, a pull ring or a screwing piece is correspondingly connected with the threaded hole, and the core shaft is annularly sleeved with a tray; the tray is made of a cloth material and is of a rectangular-ambulatory-plane frame structure; the problem that in the prior art, a pressed product has the defects of water leakage and the like is mainly solved, the ceramic guide rail has the advantages that the structural integrity of the ceramic guide rail is kept, deformation is not prone to occurring, and the service life of the forming die is longer.

Description

Technical Field

[0001] The invention relates to the technical field of moulds, and in particular to a ceramic guide rail crossbeam mould. Background Art

[0002] At present, ceramic guide rails are widely used as key moving structural components for ultra-precision machining and ultra-precision measurement, such as ultra-precision mobile worktables for lithography machines for semiconductor chip processing, ultra-precision machine tools for high-precision optical devices, ultra-precision three-coordinate measuring instruments, etc. Therefore, the development of large-size, high-precision high-tech ceramic guide rails is one of the key core technologies for manufacturing ultra-precision equipment.

[0003] Among them, isostatic pressing technology is a key process in ceramic molding, and is widely popular for its simple operation, stable quality and uniform density of the molded body. However, the traditional isostatic pressing process is usually limited to long guide rails with a molding length of less than 1000mm and a thick thickness. For long guide rails with a length of more than 1000mm and a thickness of less than 40mm, casting molding is usually required. This process requires high equipment precision, is expensive, and it is difficult to ensure that the porosity, airtightness and material purity reach more than 99.9%. Traditional ceramic preparation methods mostly use dry pressing combined with isostatic pressing treatment, but large-sized ceramic blanks formed by dry pressing are not only expensive, but also prone to cracking and delamination during the molding and transfer process, especially for large-sized and thick blanks. In contrast, the direct isostatic pressing process is simpler, has higher strength, is more suitable for the molding of large-sized ceramic blanks, and is an ideal method for achieving economical and efficient molding of large-sized ceramic blanks.

[0004] The green bodies formed by isostatic pressing are known for their uniform density and few internal defects, which makes the processing performance after firing more stable. This process is particularly suitable for the preparation of large-sized parts with complex shapes because the ceramic shrinks little after firing and is not easy to deform. In the preparation of elastic molds, isostatic pressing technology is simple to operate, has a long service life, and can significantly reduce costs. However, although isostatic pressing technology performs well in the preparation of ceramic guide rails with solid structures, it faces challenges in the manufacture of hollow structures, especially porous ceramic guide rails. The main problems include the tendency of through cracks in the green body during the forming process, resulting in the inability to form, as well as inconsistent arrangement directions of square holes and uneven gaps between parallel holes, which may eventually lead to defects such as leakage in the pressed products. Summary of the invention

[0005] The purpose of the present invention is to provide a ceramic guide rail crossbeam mold to solve the problem of water leakage and other defects in the pressed products in the prior art. The present invention has the advantages of maintaining the structural integrity of the ceramic guide rail and not being easily deformed, which can better ensure the quality of the product and extend the life of the molding mold.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A ceramic guide rail crossbeam mold, comprising: a mold, with plug parts arranged at both ends of the mold, and sealing gaskets bonded to the plug parts; a wire mesh cover, with lifting rings fixed on the wire mesh cover, a side door arranged on the wire mesh cover, one side of the side door is connected to the main body of the wire mesh cover through a hinge member, the other side of the side door is fixed to the main body of the wire mesh cover through a fixing pin, and further, the wire mesh cover is fixedly connected to the bottom plate through supports; a mandrel, with a threaded hole arranged at the top end of the mandrel, a pull ring or a screw fastener corresponding to and connected to the threaded hole, and a tray sleeved on the mandrel; the tray, made of cloth material, and the tray is in the shape of a rectangular frame structure, the whole frame is separated by at least one partition board into at least two rectangular holes, and the inner and outer frames of the rectangular shape are fixedly connected by struts, and the area between the inner and outer frames in the tray is a cloth hole; wherein, the mold is a flexible mold, and the outside of the mold is wrapped with a wire mesh cover, and a mandrel is installed inside the mold; the area between the mold and the mandrel is a material injection area, and further, the pull ring is connected to a hook through a suspension rope; wherein, the middle of the mold is a cuboid, and both ends are cylinders, and the cuboid and the cylinders are connected by a relief part, and the relief part has a slope, and the slope is 30° - 60°.

[0008] In some embodiments, the pressing and forming process of the ceramic guide rail crossbeam mold specifically comprises the following steps:

[0009] 1) Assemble the ceramic guide rail crossbeam mold: sleeved the plug part with the sealing gasket on the bottom of the mold, and seal it with an elastic band, the bottom of the mold is cross-wound with a lifting belt, and put it into the wire mesh cover together, let the two lifting belts extend out of the wire mesh cover from the bottom, the bottom of the mold contacts the metal bottom plate of the wire mesh cover, fix the side door through the fixing pin, pass the mandrel through the rectangular holes of the two trays, connect the hook and the pull ring with a suspension rope, lift the mandrel to make it hang freely, put it into the inside of the mold, make the bottom of the mandrel contact the sealing gasket, remove the lifting, remove the pull ring, and replace it with a screw fastener to block the threaded hole;

[0010] 2) Load the ceramic powder into the mold and seal it: pour the ceramic powder from the open end of the mold, at the same time lift the bottom tray upward, finally take out the tray, fill it with powder, cover the plug part, seal the upper opening with an elastic band, and fix the upper opening with iron wire;

[0011] 3) Put the mold into a hydrostatic cylinder body filled with a pressing medium water, seal the cylinder body, and press and form the ceramic powder in the mold by setting the pressing curve parameters;

[0012] 4) Finally, adopt lifting and demolding to obtain the ceramic guide rail crossbeam product.

[0013] In some embodiments, the wire mesh cover is a metal wire mesh cover; the mandrel is multiple steel mandrels.

[0014] In some embodiments, the mesh of the mesh cover is selected from one of round holes, square holes and polygonal holes.

[0015] In some embodiments, the mesh cover is fixed to the mold by fixing pins.

[0016] In some embodiments, the outer dimensions of the mandrel are determined by the dimensions of the inner hole of the ceramic guide rail product, and each edge chamfer thereof is greater than R4 mm.

[0017] In some embodiments, the ceramic guide rail beam mold is pressurized from 0 MPa to 110 MPa in an isostatic pressing, the pressure is maintained for 60 seconds, the pressure is reduced to 90 MPa, the pressure is maintained at 90 MPa for 40 seconds, the pressure is reduced to 50 MPa, the pressure is maintained for 30 seconds, and finally the pressure is reduced to 0 MPa.

[0018] In some embodiments, the ceramic guide rail beam mold is subjected to a multi-stage pressing process in an isostatic pressing process, wherein the pressure is increased from 0 MPa to 30 MPa and maintained for 10 seconds for initial compaction, and then increased from 30 MPa to 60 MPa and maintained for 20 seconds for further secondary compaction of the powder, and then increased from 60 MPa to a final pressing pressure of 100 MPa and maintained for 30 seconds to complete the final compaction, and finally the pressure is released to 0 MPa.

[0019] In some embodiments, the ceramic guide rail beam mold is subjected to a high pressure pressing process in an isostatic pressing process, wherein the pressure is rapidly increased from 0 MPa to 150 MPa, and then maintained at 150 MPa for 120 seconds to complete the final compaction, and finally slowly released to 0 MPa.

[0020] In some embodiments, the demolding process is: remove the mold from the static pressure cylinder, disassemble the upper mouth of the mold, install a pull ring on the core shaft, connect the crane hook to the pull ring, lift out the core shaft, remove the mesh cover in turn, remove the elastic band at the bottom of the mold, remove the mold, and obtain the ceramic guide rail beam element.

[0021] The beneficial effects of the present invention are:

[0022] The present invention provides a ceramic guide rail crossbeam mold, which can ensure that the arrangement direction of the square holes is completely consistent. This consistency is essential for maintaining the structural integrity and functionality of the ceramic guide rail. The consistent arrangement direction of the square holes helps to improve the mechanical properties and durability of the guide rail, and also facilitates subsequent processing and assembly work. In addition, due to the design of the mold, the pressed ceramic guide rail will not leak, which is particularly important for application scenarios that require sealing performance; the non-leaking ceramic guide rail can be used in the transmission system of liquid or gas media to ensure sealing and safety, reduce maintenance costs and potential environmental pollution risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the assembly of the ceramic guide rail beam mold of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the mesh cover;

[0025] Figure 3 It is a schematic diagram of the local structure of the mandrel;

[0026] Figure 4 This is a schematic diagram of the use status of the hoisted ceramic guide rail beam mold;

[0027] Figure 5 It is a schematic diagram of the structure of the pallet;

[0028] Figure 6 It is a structural schematic diagram of the pallet;

[0029] Figure 7 This is a top view of the ceramic guide rail product prepared in Example 1.

[0030] In the figure:

[0031] 1. Mould; 2. Plug; 3. Mesh cover; 4. Mandrel; 5. Sealing pad; 6. Tray; 7. Lifting ring; 8. Screw; 9. Allowing part; 10. Pivot; 11. Fixing pin; 12. Side door; 13. Bracket; 14. Bottom plate; 15. Pull ring; 16. Injection area; 17. Threaded hole; 18. Lifting rope; 19. Hook; 20. Rectangular hole; 21. Partition; 22. Pillar; 23. Feeding hole; 24. Support plate; 25. Clamp; 26. Support; A. Ceramic powder. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] like Figures 1 to 3 As shown, the present invention discloses a ceramic guide rail beam mold, comprising:

[0037] The mold 1 has plugs 2 at both ends of the mold 1, and a sealing gasket 5 is bonded to the plugs 2; in this embodiment, Figure 2As shown, plugs 2 are provided at both ends of the mold 1, and sealing gaskets 5 are bonded to the plugs 2; the plugs 2 are used for sealing to prevent the isostatic pressing medium from entering the mold 1 during the pressurization or depressurization process; one end of the mold 1 is open. The plug 2 is accommodated in the circular area of ​​the cylindrical structure of the mold 1, and its outer diameter is larger than the inner diameter of the circular part of the mold, and is tightly connected to the mold 1. When in use, the plug 2 and the mold 1 are fixed with an elastic band with good elasticity in the connection area, and the mold 1 is sealed in the isostatic press medium. In addition, the sealing gasket 5 is circular in shape, and its size is mainly to cover the area where the core shaft 4 is located. When in use, it is bonded to the plug so that it contacts the core shaft 4, and its function is to prevent the core shaft 4 from sliding on the sealing gasket 5 when pressing in the isostatic press.

[0038] The mesh cover 3 is a metal mesh cover, a ring 7 is fixed to the mesh cover 3, a side door 12 is provided on the mesh cover 3, one side of the side door 12 is connected to the main body of the mesh cover 3 by a pivot member 10, and the other side of the side door 12 is fixed to the main body of the mesh cover 3 by a fixing pin 11, and the mesh cover 3 is fixedly connected to the bottom plate 14 by a support; in this embodiment, as Figure 3 As shown, a lifting ring 7 is fixed on the mesh cover 3, and a side door 12 is arranged on the mesh cover 3. One side of the side door 12 is connected to the main body of the mesh cover 3 by a pivot 10, and the other side of the side door 12 is fixed to the main body of the mesh cover 3 by a fixing pin 11, that is, the mesh cover 3 is fixed to the mold 1 by the fixing pin 11; the mesh cover 3 is fixedly connected to the bottom plate 14 by a bracket 13; the function of the lifting ring 7 is to lift the entire mold, and the function of the side door 12 is to load and remove the mold; the function of the fixing pin 11 is to fix the mold 1; the bottom plate 14 is a metal bottom plate, and its function is to support the entire mold, and the normal of its bottom surface coincides with the axial direction of the mold; the function of the bracket 13 is to connect the mesh cover 3 and the bottom plate 14, and to support the mesh cover 3, the axial direction of the bracket 13 is parallel to the axial direction of the mesh cover 3, and is parallel to the normal of the plane of the bottom plate 14, that is, the bottom plate 14 is perpendicular to the bracket 13, and the verticality tolerance is 1mm.

[0039] The mandrel 4 is a plurality of steel mandrels, a threaded hole 17 is provided at the top of the mandrel 4, and a pull ring 15 or a screw 8 is connected to the threaded hole 17, and a tray 6 is sleeved on the mandrel 4; the tray 6 is made of cloth material, and the tray 6 is a U-shaped frame structure, the whole frame is separated by at least one partition 21, and is divided into at least two rectangular holes 20, and the inner and outer frames of the U-shaped are fixedly connected by pillars 22, and the area between the inner and outer frames in the tray 6 is a cloth hole 23; in this embodiment, as Figure 4As shown, the top of the mandrel 4 is provided with a threaded hole 17, and the corresponding connection with the threaded hole 17 is a pull ring 15 or a screw 16; the mandrel 4 is sleeved with a tray 6; the injection area 16 is between the mold 1 and the mandrel 4; the pull ring 15 is connected to the hook 19 through a hanging rope 18. The external dimensions of the mandrel 4 are determined by the size of the internal hole of the ceramic guide rail product. Each edge needs to be chamfered greater than R4, the edge should not have pits and should be smooth, the surface is electroplated with hard chrome, the surface finish is below Ra0.8μm, the straightness tolerance is within 0.1mm, the two ends are flat, and the verticality tolerance of the end face and the axial direction is 0.1mm. One end of the mandrel 4 is tapped to make a threaded hole 17, and is equipped with a pull ring 15. The function of the pull ring 15 is to lift the mandrel 4. After the mandrel is lifted, its threaded hole needs to be blocked with a screw 8 to make the surface flat after blocking.

[0040] It should be further explained that the mold 1 is a flexible mold 1, and the outside of the mold 1 is wrapped with a mesh cover 3, and the inside of the mold 1 is installed with a core shaft 4; the injection area 16 is between the mold 1 and the core shaft 4, and the pull ring 15 is connected to the hook 19 through a hanging rope 18.

[0041] It should be further explained that the middle of the mold 1 is a cuboid and the two ends are cylinders. The cuboid and the cylinder are connected by a clearance portion 9. The clearance portion 9 has a slope of 30° to 60°. Such a slope design helps to better guide the flow of materials when the mold is closed, while reducing stress concentration and extending the service life of the mold.

[0042] It should be further explained that the mesh of the mesh cover 3 is selected from one of round holes, square holes and polygonal holes, wherein, when the mesh is a round hole, the round hole mesh provides excellent structural stability and uniform stress distribution due to the uniformity and symmetry of its geometric shape. This mesh shape helps to achieve more uniform material flow during the pressing process, reduce stress concentration, and thus reduce the risk of cracks and defects. When the mesh is a square hole, the square hole mesh provides good space utilization and structural rigidity. The design of the square hole enables the mesh to have the same performance in the horizontal and vertical directions, which is particularly important in structures that require bidirectional symmetry. When the mesh is a polygonal hole mesh, such as a hexagonal hole, because of its geometric characteristics close to a circle, it can provide more material in a limited space, thereby increasing the strength and rigidity of the structure. At the same time, the design of the polygonal hole can reduce the use of materials and achieve a lightweight design.

[0043] like Figure 6 As shown, a clamp 25 is provided at the bottom of the support plate 24 , and a support member 26 is provided at the bottom of the support plate 24 .

[0044] like Figure 5As shown, the tray 6 is a U-shaped frame structure, the entire frame is divided by a partition 21 and is divided into a plurality of rectangular holes 20; the inner and outer frames of the U-shaped frame are fixedly connected by a support 22, and the area between the inner and outer frames is a fabric hole 23. The outer frame of the tray 6 is consistent with the square internal structure of the middle section of the mold 1, and its outer frame size is 4mm smaller than the inner size of the mold, which is convenient for up and down movement. The rectangular hole 20 can accommodate the mandrel 4 to pass through, and its inner frame size is 2mm larger than the square outline size of the mandrel 4. There are partitions 21 between the rectangular holes 20, and the relationship between the width of the partition D1 and the partition D2 between the guide rail product holes is D1 = 1.8*D2, and the internal rectangular hole is connected to the outside of the tray through 4 pillars.

[0045] The external dimensions of the mandrel 4 are determined by the dimensions of the internal hole of the ceramic guide rail product, and each edge chamfer thereof is greater than R5mm.

[0046] like Figures 1 to 5 As shown, the isostatic pressing molding process of ceramic guide rail beam includes the following steps: first assemble the ceramic guide rail beam mold by hoisting, then load the ceramic powder raw material into it and seal it, then put the mold into a static pressure cylinder filled with pressing medium water, seal the cylinder, and press the ceramic powder in the mold into shape by setting the isostatic pressing curve parameters; finally, demold it to obtain a large double-hole ceramic guide rail beam product.

[0047] The ceramic guide rail beam mold is pressurized from 0 MPa to 110 MPa in an isostatic pressing process, the pressure is maintained for 60 seconds, the pressure is reduced to 90 MPa, the pressure is maintained at 90 MPa for 40 seconds, the pressure is reduced to 50 MPa, the pressure is maintained for 30 seconds, and finally the pressure is reduced to 0 MPa.

[0048] In some embodiments, the ceramic guide rail crossbeam mold is a high pressure pressing process in an isostatic pressing process, in which the pressure is quickly increased from 0 MPa to 150 MPa, and then maintained at 150 MPa for 120S to complete the final compaction, and finally slowly unloaded to 0 MPa. Therefore, the isostatic pressing applies pressure evenly from all directions, making the compaction more uniform, reducing deformation during the firing process, and improving the dimensional accuracy and consistency of the product. Since the pressure is evenly distributed in all directions, the static pressed product has a higher density and uniformity, which helps to improve the mechanical properties and durability of the final product.

[0049] In some embodiments, the ceramic guide rail crossbeam mold is a multi-stage pressing process in an isostatic pressing process, wherein the pressure is increased from 0MPa to 30MPa, maintained for 10S, and initial compaction is performed, and then the pressure is increased from 30MPa to 60MPa, maintained for 20S, and the powder is further compacted for a second time, and then the pressure is increased from 60MPa to the final pressing pressure of 100MPa, maintained for 30S, and the final compaction is completed, and finally the pressure is unloaded to 0MPa. Therefore, it can be seen that the multi-stage pressing process allows the material to be gradually densified at different pressure stages, which helps to reduce defects and improve the uniformity of the final product. In addition, by applying different pressures at different stages, the stress and strain distribution in the material can be better controlled, reducing the internal stress and deformation of the product. Specifically, multi-stage pressing can adjust the pressure of each stage as needed to optimize the density distribution of the product.

[0050] The isostatic pressing process of ceramic guide rail beams includes the following steps:

[0051] 1) Assemble the ceramic guide rail crossbeam mold 1: insert the plug 2 with the sealing gasket 5 into the bottom of the mold 1 and seal it with an elastic band. The bottom of the mold 1 is cross-wrapped with lifting belts and placed together in the mesh cover 3. Extend the two lifting belts from the bottom of the mesh cover 3. The bottom of the mold 1 contacts the metal bottom plate 14 of the mesh cover 3. Fix the side door 12 with the fixing pin 11. Pass the mandrel 4 through the rectangular holes 20 of the two trays 6. Connect the hook 19 with the pull ring 15 with the lifting rope 18. Lift the mandrel 4 to let it hang freely and put it into the mold. 1, the bottom of the mandrel 4 is in contact with the sealing gasket 5, the lifting is removed, the pull ring 15 is removed, and the screw 8 is used to plug the threaded hole 17; in this embodiment, four iron wires with a length greater than the length of the mold are used to fix the bottom tray 6 and the mandrel, and the symmetrical pillars 22 at the far end are bolted to facilitate the lifting of the tray 6, and the mandrel 4 is passed through the rectangular holes 20 of the two trays and temporarily fixed, and the hook 19 is connected to the pull ring 15 of the mandrel 4 with the lifting rope 18, and the mandrel is lifted to be free to hang down, so that the tray 6 and the mandrel 4 are combined together. In the process of mold assembly, the mesh cover 3 with the mold 1 and the plug is first placed vertically. Subsequently, the mandrel 4 is positioned through the tray 6 and slowly placed into the vertical mold 1. The bottom tray 6 is pulled up and down by the iron wire to accurately position the mandrel 4, ensure that its bottom is in contact with the sealing gasket 5, and realize the fixation of the mandrel 4. After fixation, the hook 19 and the lifting rope 18 are removed, and the pull ring on the mandrel is removed. Finally, the threaded hole 17 is sealed with a screw 8 to ensure that the sealing surface is flat.

[0052] 2) Ceramic powder is loaded into the mold 1 and sealed: Pour the ceramic powder from the opening of the mold 1, and pull the tray 6 at the bottom upward at the same time. Finally, take out the tray 6, fill it with powder, cover it with plug 2, seal the upper opening with an elastic band, and fix the upper opening with wire; In this embodiment, step 2) is to ensure that the mold 1 is clean and dust-free to avoid any impurities affecting the quality of the ceramic powder and the integrity of the final product; Slowly pour the ceramic powder from the opening of the mold 1, and this process needs to be carefully operated to prevent the powder from flying or uneven distribution. While the powder is poured, pull the tray 6 at the bottom of the mold 1 upward synchronously to ensure that the powder is evenly distributed inside the mold to avoid accumulation and gaps. After the powder is filled, gently take out the tray 6 to ensure that the powder is completely filled inside the mold. After the mold 1 is filled with powder, place the plug 2 above the mold to ensure that it is well sealed with the edge of the mold to prevent powder leakage. In addition, use an elastic band to seal the upper opening of the mold 1 to ensure that the sealing band is tight and has no gaps to prevent powder leakage in subsequent operations. In addition, the upper opening of the mold 1 is further fixed with iron wire to ensure that the seal will not be loosened or damaged during subsequent transportation or processing.

[0053] 3) The mold 1 is placed in a static pressure cylinder filled with pressing medium water, the cylinder is sealed, and the ceramic powder in the mold 1 is pressed into shape by setting pressing curve parameters.

[0054] 4) Finally, the mold is demoulded by hoisting to obtain a ceramic guide rail beam product. In this embodiment, the mold 1 is taken out from the static pressure cylinder, the upper mouth of the mold 1 is disassembled, a pull ring is installed at the mandrel 4, the crane hook is connected to the pull ring, the mandrel 4 is hoisted out, the mesh cover 3 is removed in turn, the elastic band at the bottom of the mold 1 is removed, and the mold 1 is removed to obtain a ceramic guide rail beam component.

[0055] The demoulding process is as follows: Preparation stage: Remove the mold from the static pressure cylinder body and ensure that its axis is perpendicular to the ground to stabilize the mold and reduce operational risks. Disassembly and cleaning: Disassemble the upper mouth of the mold, remove the plug, and clean the upper end of the mandrel to prepare for lifting. Lifting preparation: Use the crane to connect the lifting rope and the single hook, ensure that the pull ring at the upper end of the mandrel is aligned with the center line of the hook, and then connect, and slowly lift the mandrel. Sequential lifting: Lift the mandrel in the order of first the two sides and then the middle to balance the force and protect the ceramic blank. Overall lifting: Lift the mold and the ceramic blank together to improve efficiency and reduce operational risks. Demolding operation: Put down the mold and the ceramic blank, pull the mold to separate it from the bottom plug, and expose the ceramic blank. Placement and fixing: Place the ceramic blank on the pallet, fix the blank and the pallet with a rope, and tilt it down with the lifting belt and the crane, and finally place it in the specified position with a forklift. Use of auxiliary tools: There are clamps and supports at the bottom of the pallet to enhance stability and safety.

[0056] The above-mentioned use of the present invention in the demoulding process has the following advantages and effects: 1. By placing the mold vertically on a flat ground, the stability of the demoulding process is ensured, and the risk of tilting or instability is reduced. 2. The use of a crane and a lifting rope connection, as well as the precise alignment of the pull ring and the hook, provides a stable and controllable lifting system to ensure the safe lifting of the core shaft. 3. The lifting sequence of first the two sides and then the middle helps to evenly distribute the weight and reduce the deformation and damage of the ceramic body during the lifting process. 4. Lifting the mold and the ceramic body together improves the operating efficiency and reduces the risks caused by multiple lifting. 5. By removing the metal mesh cover and the elastic band, and then pulling the mold out of the plug to expose the ceramic body, the integrity of the ceramic body is ensured. 6. Using auxiliary tools such as pallets, clamps, and supports to ensure the stability of the ceramic body during transportation and reduce damage. 7. The steps of the entire demoulding process are clear, easy for operators to understand and execute, and improve the standardization and repeatability of the operation.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A ceramic guide rail beam mold, characterized in that: Included are: A mold (1), wherein plugs (2) are provided at both ends of the mold (1), and sealing gaskets (5) are bonded to the plugs (2); A mesh cover (3), a hanging ring (7) is fixed on the mesh cover (3), a side door (12) is arranged on the mesh cover (3), one side of the side door (12) is connected to the main body of the mesh cover (3) through a pivot member (10), and the other side of the side door (12) is fixed to the main body of the mesh cover (3) through a fixing pin (11), and the mesh cover (3) is fixedly connected to the bottom plate (14) through a bracket (13); A mandrel (4), wherein a threaded hole (17) is provided at the top end of the mandrel (4), a pull ring (15) or a screw (8) is connected to the threaded hole (17), and a tray (6) is sleeved on the mandrel (4); A tray (6) is made of cloth material, and the tray (6) is in the shape of a U-shaped frame structure, the entire frame is divided by at least one partition (21), and is divided into at least two rectangular holes (20), and the inner and outer frames of the U-shaped frame are fixedly connected by pillars (22), and the area between the inner and outer frames in the tray (6) is a cloth hole (23); The mold (1) is a flexible mold, and the outside of the mold (1) is wrapped with the mesh cover (3), and the inside of the mold (1) is installed with the core shaft (4); between the mold (1) and the core shaft (4) is an injection area (16), and the pull ring (15) is connected to the hook (19) through a hanging rope (18); The middle of the mold (1) is a cuboid, and the two ends are cylinders. The cuboid and the cylinder are connected via a relief portion (9). The relief portion (9) has a slope of 30° to 60°.

2. The ceramic guide rail beam mold according to claim 1, characterized in that: The pressing and forming process of the ceramic guide rail crossbeam mold is specifically the following steps: 1) Assembling the ceramic guide rail crossbeam mold: insert the plug (2) with the sealing gasket (5) adhered thereto into the bottom of the mold (1) and seal it with an elastic band. The bottom of the mold (1) is cross-wrapped with lifting belts and placed together in the mesh cover (3). Extend the two lifting belts from the bottom of the mesh cover so that the bottom of the mold (1) contacts the metal bottom plate (14) of the mesh cover (3). Fix the side door (12) by the fixing pin (11). Pass the mandrel (4) through the rectangular holes (20) of the two trays (6). Connect the hook (19) to the pull ring (15) with a lifting rope (18). Lift the mandrel (4) to make it hang freely and place it into the mold (1). Make the bottom of the mandrel (4) contact the sealing gasket (5). Remove the lifting, remove the pull ring (15), and replace it with the screw (8) to seal the threaded hole (17). 2) The ceramic powder (A) is loaded into the mold and sealed: the ceramic powder (A) is poured into the mold (1) from the opening, while the tray (6) at the bottom is pulled upwards, and finally the tray (6) is taken out, covered with the powder, and the plug (2) is covered, and the upper opening is sealed with an elastic band and fixed with a wire; 3) placing the mold (1) into a static pressure cylinder filled with pressing medium water, sealing the cylinder, and pressing the ceramic powder (A) in the mold into shape by setting pressing curve parameters; 4) Finally, the mold is demoulded by hoisting to obtain the ceramic guide rail beam product.

3. The ceramic guide rail beam mold according to claim 2, characterized in that: The mesh cover (3) is a metal mesh cover; the core shaft (4) is a plurality of steel core shafts.

4. The ceramic guide rail beam mold according to claim 3, characterized in that: The mesh of the mesh cover (3) is selected from one of round holes, square holes and polygonal holes.

5. The ceramic guide rail beam mold according to claim 2, characterized in that: The mesh cover (3) is fixed to the mold (1) via the fixing pin (11).

6. The ceramic guide rail beam mold according to claim 2, characterized in that: The outer dimensions of the core shaft (4) are determined by the dimensions of the inner hole of a ceramic guide rail product, and each edge chamfer thereof is greater than R4mm.

7. The ceramic guide rail beam mold according to any one of claims 2 to 6, characterized in that: The ceramic guide rail beam mold is pressurized from 0 MPa to 110 MPa in an isostatic pressing process, the pressure is maintained for 60 seconds, the pressure is reduced to 90 MPa, the pressure is maintained at 90 MPa for 40 seconds, the pressure is reduced to 50 MPa, the pressure is maintained for 30 seconds, and finally the pressure is reduced to 0 MPa.

8. The ceramic guide rail beam mold according to any one of claims 2 to 6, characterized in that: The ceramic guide rail crossbeam mold is subjected to a multi-stage pressing process in an isostatic pressing process, wherein the pressure is increased from 0MPa to 30MPa and maintained for 10S for initial compaction, and then increased from 30MPa to 60MPa and maintained for 20S for further secondary compaction of the powder, and then increased from 60MPa to the final pressing pressure of 100MPa and maintained for 30S to complete the final compaction, and finally the pressure is released to 0MPa.

9. The ceramic guide rail beam mold according to any one of claims 2 to 6, characterized in that: The ceramic guide rail crossbeam mold is subjected to a high-pressure pressing process in an isostatic pressing process, wherein the pressure is rapidly increased from 0 MPa to 150 MPa, and then maintained at a pressure of 150 MPa for 120 seconds to complete the final compaction, and finally slowly released to 0 MPa.

10. The ceramic guide rail beam mold according to any one of claims 2 to 6, characterized in that: The demoulding process is as follows: the mold is taken out from the static pressure cylinder, the upper opening of the mold (1) is disassembled, the pull ring (15) is installed on the core shaft (4), the crane hook is connected to the pull ring (15), the core shaft (4) is lifted out, the mesh cover (3) is removed in turn, the elastic band at the bottom of the mold (1) is removed, and the mold (1) is removed to obtain the ceramic guide rail crossbeam element.

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