A high pressure forming machine for saggers

Abstract

The utility model relates to the technical field of forming machine, concretely relates to a high pressure forming machine for sagger, including forming machine main part, the extrusion die and forming die are installed in proper order on forming machine main part, high pressure forming machine still includes docking mechanism, sealing mechanism and air extraction mechanism, the outside of extrusion die is arranged in the docking mechanism for covering in the controllable closed space formed to the outside of extrusion die and the outside of forming die, the sealing mechanism for preventing the gap of docking mechanism and the gap between docking mechanism and forming machine main part is arranged on extrusion die and forming die. Form the controllable closed space outside the die of high pressure forming machine through docking mechanism, and gradually discharge the air of closed space through air extraction mechanism, solved the air existing in the die of sagger press forming equipment, the air is easy to form the bubble and remain in the inside of sagger when pressing, destroy the integrality and uniformity of sagger structure, reduce its strength and density technical problem.

Description

Technical Field

[0001] This utility model relates to the field of molding machine technology, specifically to a high-pressure molding machine for saggers. Background Technology

[0002] A high-pressure forming machine for saggers is a key piece of equipment specifically designed for manufacturing saggers. It utilizes a high-pressure environment to shape the sagger material and mainly consists of a frame, a mold system, a hydraulic system, and a control system. The frame serves as the basic framework of the equipment, providing stable support for other components. The mold system includes an upper and lower mold, whose shape and size are customized according to the sagger design requirements, determining the final shape and precision of the sagger. The hydraulic system generates high pressure through components such as oil pumps and cylinders, pushing the mold to apply pressure to the sagger material; it is the core power source for material forming. The control system is responsible for controlling the operation of each component, such as pressure regulation, stroke control, and action sequence, ensuring stable and precise operation of the equipment.

[0003] Chinese Patent Publication No. CN116922548A discloses a sagger pressing and forming equipment, including a base, a support frame fixedly connected to the base, a hydraulic push rod mounted on the support frame, an upper pressing mold fixedly connected to the output end of the hydraulic push rod, several rotating brackets fixedly connected to the base, a conveyor table mounted on the rotating brackets, a conveyor belt mounted on the conveyor table, and a rapid pressing mechanism mounted on the conveyor table. This invention can improve the coordination and linkage between batch sagger pressing and conveying, increase the processing efficiency of sagger pressing and forming, and automatically clean the sagger surface. It fully utilizes the compressed air inside the sagger, effectively reducing the overall energy consumption of sagger pressing and forming, and can achieve rapid automatic demolding of the sagger during the pressing process, improving the overall processing efficiency of the sagger.

[0004] The aforementioned patent mentions that when the sagger pressing and forming equipment presses the sagger, the upper and lower molds of the sagger pressing and forming equipment are directly exposed to the air. At this time, there is air inside the mold, and during pressing, the air easily forms bubbles that remain inside the sagger. These bubbles will damage the integrity and uniformity of the sagger structure, reduce its strength and density, and during the high-temperature firing process, the parts containing bubbles are prone to cracking and deformation due to uneven stress. Therefore, we propose a high-pressure forming machine for saggers. Utility Model Content

[0005] To address the aforementioned issues, a high-pressure forming machine for saggers is provided. Through the cooperation of a docking mechanism and a sealing mechanism, a controllable closed space is formed outside the mold of the high-pressure forming machine. The air in the closed space is gradually discharged through an air extraction mechanism. This solves the technical problem that air exists inside the mold of the sagger pressing equipment, and that air bubbles easily form inside the sagger during pressing, which damages the integrity and uniformity of the sagger structure and reduces its strength and density.

[0006] To address the existing technical problems, this utility model provides a high-pressure forming machine for saggers, comprising a forming machine body, on which an extrusion mold and a forming mold are sequentially mounted. The high-pressure forming machine also includes a docking mechanism, a sealing mechanism, and an air extraction mechanism. A docking mechanism is provided on the outer side of the extrusion mold to cover the outer side of the extrusion mold and the outer side of the forming mold, forming a controllable closed space. A sealing mechanism is provided on the extrusion mold and the forming mold to prevent gaps from appearing in the docking mechanism and between the docking mechanism and the forming machine body. An air extraction mechanism is provided on the docking mechanism to remove air from the docking mechanism.

[0007] Preferably, the docking mechanism includes a closing mechanism, a displacement mechanism, and a first limiting mechanism; the extrusion die and the forming die are provided with a closing mechanism for covering the extrusion die and the forming die; a displacement mechanism is provided on the outside of the closing mechanism for controlling the opening and closing of the closing mechanism; and a first limiting mechanism is provided inside the displacement mechanism for keeping the closing mechanism in an open state.

[0008] Preferably, the closing mechanism includes a fixed plate, a shrinking member, and a connecting cover; the fixed plate is connected to the extrusion mold, and a through groove is provided on one side of the fixed plate; the shrinking member is sleeved on the outside of the extrusion mold, and the upper side of the shrinking member is connected to the fixed plate; the connecting cover is sleeved on the outside of the forming mold, and the upper side of the connecting cover is connected to the lower side of the shrinking member.

[0009] Preferably, the displacement mechanism includes a connecting pipe, a docking rod, and an elastic reset member; the lower end of the connecting pipe is connected to a fixed plate; the upper end of the docking rod is slidably docked with the inner side of the connecting pipe, and the lower end of the docking rod is connected to a connecting cover; the elastic reset member is sleeved with the docking rod, and both ends of the elastic reset member are connected to the connecting pipe and the docking rod, respectively.

[0010] Preferably, the first limiting mechanism includes a first magnetic chuck and a second magnetic chuck; the first magnetic chuck is embedded in the connecting tube; the second magnetic chuck is embedded in the docking rod, and the second magnetic chuck is in contact with the first magnetic chuck.

[0011] Preferably, the sealing mechanism includes two first sealing elements and a second sealing element; the two first sealing elements are respectively connected to the upper and lower sides of the shrink member; the second sealing element is connected to the lower side of the connecting cover.

[0012] Preferably, the vacuuming mechanism includes a connecting hose, a vacuuming component, and a second limiting mechanism; the connecting hose is disposed on the fixed plate; the vacuuming component is fixedly installed on the molding machine body, and the working end of the vacuuming component is connected to one end of the connecting hose; a second limiting mechanism is provided between the connecting hose and the fixed plate to realize the installation and fixation of the connecting hose and the fixed plate.

[0013] Preferably, the second limiting mechanism includes an outer threaded tube and an inner threaded tube; the outer threaded tube is rotatably disposed at the end of the connecting hose away from the vacuuming component; the inner threaded tube is threadedly connected to the outer threaded tube, and the inner threaded tube is connected to the through groove of the fixing plate.

[0014] The advantages of this utility model compared to the prior art are:

[0015] 1. By forming a controllable closed space outside the mold of the high-pressure molding machine through the docking mechanism, and gradually expelling the air from the closed space through the air extraction mechanism, the technical problem of air inside the mold of the sagger pressing equipment is solved. During the pressing process, the air easily forms bubbles and remains inside the sagger, which damages the integrity and uniformity of the sagger structure and reduces its strength and density.

[0016] 2. A sealed closed space is formed by the sealing mechanism and the docking mechanism. The first and second sealing elements have good gas barrier properties and can adapt to the slight deformation of the sealing surface during the vacuuming process, thereby ensuring the sealing effect. This solves the technical problem of air leakage in the closed space during the air extraction process of the high pressure forming machine for the crucible. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the connecting cover and connecting pipe of a high-pressure forming machine for a sagger and its connecting structure.

[0018] Figure 2 This is a three-dimensional schematic diagram of the shrinkage part and connecting cover of a high-pressure forming machine for a sagger and its connection structure.

[0019] Figure 3 This is a three-dimensional schematic diagram of the connecting hose and vacuum component of a high-pressure forming machine for a crucible, and their connection structure.

[0020] Figure 4 It is a high-pressure forming machine for saggers. Figure 2 Enlarged diagram of point A in the middle.

[0021] Figure 5 It is a high-pressure forming machine for saggers. Figure 3 Enlarged diagram of point B in the middle.

[0022] Figure 6 It is a high-pressure forming machine for saggers. Figure 3 Enlarged diagram of point C in the middle.

[0023] The following are the labels in the diagram: 1. Molding machine body; 11. Extrusion mold; 12. Molding mold; 2. Fixing plate; 21. Shrinkage component; 22. Connecting cover; 23. Connecting pipe; 24. Connecting rod; 25. Elastic reset component; 26. First magnetic suction component; 27. Second magnetic suction component; 28. First sealing component; 29. ​​Second sealing component; 210. Connecting hose; 211. Vacuuming component; 212. External threaded tube; 213. Internal threaded tube. Detailed Implementation

[0024] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0025] See Figures 1-3 As shown, a high-pressure forming machine for saggers includes a forming machine body 1, on which an extrusion die 11 and a forming die 12 are sequentially mounted. The high-pressure forming machine also includes a docking mechanism, a sealing mechanism, and an air extraction mechanism. A docking mechanism is provided on the outside of the extrusion die 11 to cover the outside of the extrusion die 11 and the outside of the forming die 12 to form a controllable closed space. A sealing mechanism is provided on the extrusion die 11 and the forming die 12 to prevent gaps from appearing in the docking mechanism and between the docking mechanism and the forming machine body 1. An air extraction mechanism is provided on the docking mechanism to extract air from the docking mechanism. The docking mechanism includes a closing mechanism, a displacement mechanism, and a first limiting mechanism. A closing mechanism is provided on the extrusion die 11 and the forming die 12 to cover the extrusion die 11 and the forming die 12. A displacement mechanism is provided on the outside of the closing mechanism to control the opening and closing of the closing mechanism. A first limiting mechanism is provided inside the displacement mechanism to keep the closing mechanism in an open state.

[0026] Specifically, during the operation of the high-pressure molding machine for the crucible, the refractory powder and binder, prepared in an appropriate ratio, are first thoroughly mixed to form a homogeneous mixture. Then, the mixture is quantitatively added into the molding die 12.

[0027] After completing the above operations, the extrusion die 11 of the molding machine body 1 is activated. At this time, the hydraulic system of the molding machine body 1 generates enormous pressure, driving the extrusion die 11 to move downwards. The extrusion die 11 uses high pressure to press the mixture inside the molding die 12. During the pressing process, the high-pressure environment ensures that the powder is evenly filled into all parts of the die.

[0028] As the extrusion die 11 moves downward, the docking mechanism follows the movement of the extrusion die 11. Through the limiting contact between the first limiting mechanism and the displacement mechanism, the displacement mechanism is triggered to drive the closing mechanism to unfold. The closing mechanism and the sealing mechanism work together to create a closed space on the outside of the extrusion die 11 and the forming die 12.

[0029] Next, the air in the enclosed space is gradually extracted using an air extraction mechanism. This operation effectively prevents air from entering the molded body of the sagger, avoiding the formation of air bubbles or voids inside the sagger, thereby ensuring that the sagger has a tight and uniform structure and enhancing its overall strength and density.

[0030] In addition, under high pressure, the powder particles are more likely to be tightly packed, reducing the formation of air gaps and helping to improve the mechanical strength, hardness and wear resistance of the crucible.

[0031] See Figures 1-6 As shown, the closing mechanism includes a fixed plate 2, a shrinking member 21, and a connecting cover 22; the fixed plate 2 is connected to the extrusion mold 11, and a through groove is provided on one side of the fixed plate 2; the shrinking member 21 is sleeved on the outside of the extrusion mold 11, and the upper side of the shrinking member 21 is connected to the fixed plate 2; the connecting cover 22 is sleeved on the outside of the forming mold 12, and the upper side of the connecting cover 22 is connected to the lower side of the shrinking member 21; the displacement mechanism includes a connecting pipe 23, a docking rod 24, and an elastic reset member 25; the lower end of the connecting pipe 23 is connected to the fixed plate 2; the upper end of the docking rod 24 is slidably docked with the inner side of the connecting pipe 23, and the lower end of the docking rod 25 is connected to the inner side of the connecting pipe 23. The end is connected to the connecting cover 22; the elastic reset member 25 is sleeved with the docking rod 24, and the two ends of the elastic reset member 25 are respectively connected to the connecting tube 23 and the docking rod 24; the first limiting mechanism includes a first magnetic suction member 26 and a second magnetic suction member 27; the first magnetic suction member 26 is embedded in the connecting tube 23; the second magnetic suction member 27 is embedded in the docking rod 24, and the second magnetic suction member 27 is in contact with the first magnetic suction member 26; the sealing mechanism includes two first sealing members 28 and a second sealing member 29; the two first sealing members 28 are respectively connected to the upper and lower sides of the shrink member 21; the second sealing member 29 is connected to the lower side of the connecting cover 22.

[0032] Specifically, the shrink-fit component 21 is a folded corrugated cover made of polytetrafluoroethylene (PTFE). The connecting cover 22 is made of transparent tempered glass. The connecting tube 23 matches the docking rod 24. The elastic reset component 25 is a spring. The first magnetic attractor 26 is a long strip electromagnet, and the second magnetic attractor 27 is a magnetic block; the first magnetic attractor 26 and the second magnetic attractor 27 can achieve magnetic attraction. The first sealing component 28 and the second sealing component 29 are both fluororubber sealing rings. The upper and lower sides of the shrink-fit component 21 are connected to the fixing plate 2 and the connecting cover 22 by bolts, respectively, and the two first sealing components 28 are in a compressed state with the fixing plate 2 and the connecting cover 22, respectively.

[0033] When the docking mechanism moves downward with the extrusion die 11, covering the outer sides of the extrusion die 11 and the forming die 12, the power supply to the first magnetic chuck 26 is cut off, causing the first magnetic chuck 26 to lose its magnetism, thereby disengaging the first magnetic chuck 26 from the magnetic attraction state with the second magnetic chuck 27. At this time, the elastic reset member 25 breaks free from the constraints of the first magnetic chuck 26 and the second magnetic chuck 27 and begins to extend. Due to the extension of the elastic reset member 25, the docking rod 24 is pushed downward along the inner side of the connecting tube 23, and because the connecting tube 23 and the docking rod 24 are matched, the docking rod 24 is not prone to shaking or shifting during the movement.

[0034] Meanwhile, because the shrink-fit component 21 is a folded corrugated cover made of polytetrafluoroethylene, it can withstand a certain vacuum pressure, so the shrink-fit component 21 can extend accordingly. The extension of the shrink-fit component 21 causes the docking rod 24 to push the connecting cover 22 downward, and the connecting cover 22 in turn pushes the second sealing component 29 to press against the working platform of the molding machine body 1.

[0035] Given that the first sealing element 28 and the second sealing element 29 are sealing rings made of nitrile rubber, they have good gas barrier properties, effectively preventing air leakage, and possess a certain degree of flexibility and elasticity, allowing them to adapt to minor deformations of the sealing surface during vacuuming, thereby ensuring a sealing effect. Thus, the fixing plate 2, the shrinking element 21, and the connecting cover 22 form a closed sealing space outside the extrusion mold 11 and the forming mold 12.

[0036] Because the connecting cover 22 is made of chemically tempered glass, workers can observe the pressing of the extrusion mold 11 and the forming mold 12 through it. When workers need to place the mixture into the forming mold 12, they lift the connecting cover 22 upwards, causing the docking rod 24 to slide along the inside of the connecting tube 23. At the same time, the elastic reset member 25 and the shrinking member 21 shrink, moving the connecting cover 22 away from the forming mold 12. Subsequently, the first magnetic suction member 26 is energized, causing it to magnetically engage with the second magnetic suction member 27, thus keeping the connecting cover 22 away from the forming mold 12, making it easier for workers to place the mixture into the forming mold 12.

[0037] See Figures 1-3 and Figure 5As shown, the vacuuming mechanism includes a connecting hose 210, a vacuuming component 211, and a second limiting mechanism. The connecting hose 210 is mounted on the fixed plate 2. The vacuuming component 211 is fixedly mounted on the molding machine body 1, and the working end of the vacuuming component 211 is connected to one end of the connecting hose 210. A second limiting mechanism is provided between the connecting hose 210 and the fixed plate 2 to realize the installation and fixation of the connecting hose 210 and the fixed plate 2. The second limiting mechanism includes an outer threaded tube 212 and an inner threaded tube 213. The outer threaded tube 212 is rotatably mounted at the end of the connecting hose 210 away from the vacuuming component 211. The inner threaded tube 213 is threadedly connected to the outer threaded tube 212 and is connected to the through groove of the fixed plate 2.

[0038] Specifically, the vacuum pumping component 211 uses a vacuum pump as the implementing element, and the connecting hose 210 is a connecting pipe made of chlorinated polyvinyl chloride, which has good vacuum resistance.

[0039] When the fixed plate 2, shrinkage member 21, and connecting cover 22 form a closed, sealed space outside the extrusion mold 11 and forming mold 12, the connecting hose 210 is connected to the vacuum pump 211, and then the outer threaded tube 212 and the inner threaded tube 213 are rotated and connected, so that the connecting hose 210 is confined to the fixed plate 2. At this time, the operator can activate the vacuum pump 211 to remove the air from the sealed space through the connecting hose 210. The vacuum environment eliminates the interference of air on the pressing process, allowing the pressure applied by the extrusion mold 11 to be transmitted more evenly to the mixture inside the mold. Residual air can cause uneven local pressure, resulting in sagger size deviations or structural inhomogeneity; while in a vacuum state, the powder filling process of the mold is more controllable, the sagger after forming has higher dimensional accuracy, and better internal structural uniformity, meeting the requirements for high-precision industrial kiln furniture.

[0040] Working principle: When the sagger is operated by the high-pressure molding machine, the mixture is first placed inside the molding mold 12. Then, the main body of the molding machine 1 is driven by the hydraulic system to move the extrusion mold 11 down, so that the extrusion mold 11 and the molding mold 12 are closed. At this time, the first magnetic suction component 26 is cut off, and the connecting rod 24 moves down along the connecting pipe 23. The connecting rod 24 pushes the connecting cover 22 down and squeezes it with the working platform of the main body of the molding machine 1 to form a closed sealed space. The vacuum component 211 is activated, and the vacuum component 211 removes the air in the sealed space through the connecting hose 210, preventing the air in the mold from entering the sagger body. This avoids the generation of air bubbles or voids inside the sagger, thereby ensuring that the sagger structure is tight and uniform, and enhancing the overall strength and density of the sagger.

[0041] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A high-pressure forming machine for saggers, comprising a forming machine body (1), wherein an extrusion die (11) and a forming die (12) are sequentially mounted on the forming machine body (1), characterized in that, The high-pressure molding machine also includes a docking mechanism, a sealing mechanism, and a vacuuming mechanism; The outer side of the extrusion die (11) is provided with a docking mechanism for covering the outer side of the extrusion die (11) and the outer side of the forming die (12) to form a controllable closed space; The extrusion die (11) and the forming die (12) are provided with sealing mechanisms to prevent gaps from appearing in the docking mechanism and between the docking mechanism and the forming machine body (1); The docking mechanism is equipped with an air extraction mechanism to remove air from the docking mechanism.

2. The high-pressure forming machine for saggers according to claim 1, characterized in that, The docking mechanism includes a closing mechanism, a displacement mechanism, and a first limit mechanism; The extrusion die (11) and the forming die (12) are provided with a closing mechanism for covering the extrusion die (11) and the forming die (12); The outer side of the closing mechanism is equipped with a displacement mechanism for controlling the opening and closing of the closing mechanism; The displacement mechanism is equipped with a first limit mechanism to keep the closing mechanism in the open state.

3. The high-pressure forming machine for saggers according to claim 2, characterized in that, The closure mechanism includes a fixed plate (2), a retractable component (21), and a connecting cover (22); The fixing plate (2) is connected to the extrusion die (11), and a through groove is provided on one side of the fixing plate (2); The shrinking part (21) is sleeved on the outside of the extrusion die (11), and the upper side of the shrinking part (21) is connected to the fixing plate (2); The connecting cover (22) is fitted on the outside of the forming mold (12), and the upper side of the connecting cover (22) is connected to the lower side of the shrinking part (21).

4. The high-pressure forming machine for saggers according to claim 2, characterized in that, The displacement mechanism includes a connecting tube (23), a docking rod (24), and an elastic reset element (25); The lower end of the connecting pipe (23) is connected to the fixing plate (2); The upper end of the connecting rod (24) is slidably connected to the inner side of the connecting pipe (23), and the lower end of the connecting rod (24) is connected to the connecting cover (22); The elastic reset member (25) is sleeved with the docking rod (24), and the two ends of the elastic reset member (25) are connected to the connecting pipe (23) and the docking rod (24) respectively.

5. A high-pressure forming machine for saggers according to claim 2, characterized in that, The first limiting mechanism includes a first magnetic suction element (26) and a second magnetic suction element (27); The first magnetic chuck (26) is embedded in the connecting tube (23); The second magnetic clasp (27) is embedded in the docking rod (24), and the second magnetic clasp (27) is in contact with the first magnetic clasp (26).

6. The high-pressure forming machine for saggers according to claim 1, characterized in that, The sealing mechanism includes two first seals (28) and a second seal (29); The two first seals (28) are respectively connected to the upper and lower sides of the shrinkage member (21); The second seal (29) is connected to the lower side of the connecting cover (22).

7. The high-pressure forming machine for saggers according to claim 1, characterized in that, The vacuuming mechanism includes a connecting hose (210), a vacuuming component (211), and a second limiting mechanism; The connecting hose (210) is mounted on the fixing plate (2); The vacuuming component (211) is fixedly installed on the main body (1) of the molding machine, and the working end of the vacuuming component (211) is connected to one end of the connecting hose (210); A second limiting mechanism is provided between the connecting hose (210) and the fixing plate (2) to enable the connecting hose (210) to be installed and fixed to the fixing plate (2).

8. A high-pressure forming machine for saggers according to claim 7, characterized in that, The second limiting mechanism includes an external helical tube (212) and an internal helical tube (213); The external helical tube (212) is rotatably disposed at the end of the connecting hose (210) away from the vacuum pump (211); The inner threaded tube (213) is threadedly connected to the outer threaded tube (212), and the inner threaded tube (213) is connected to the through groove of the fixing plate (2).

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